TTY/Serial driver patches for 3.12-rc1
Here's the big tty/serial driver pull request for 3.12-rc1. Lots of n_tty reworks to resolve some very long-standing issues, removing the 3-4 different locks that were taken for every character. This code has been beaten on for a long time in linux-next with no reported regressions. Other than that, a range of serial and tty driver updates and revisions. Full details in the shortlog. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (GNU/Linux) iEYEABECAAYFAlIlI6UACgkQMUfUDdst+ym7kgCgmysv/TVeqsdvmkiO2eEB4+xs ddwAoMqkJ/enCJ2f+fC8y2Wz+5+kDrU7 =CiCp -----END PGP SIGNATURE----- Merge tag 'tty-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial driver patches from Greg KH: "Here's the big tty/serial driver pull request for 3.12-rc1. Lots of n_tty reworks to resolve some very long-standing issues, removing the 3-4 different locks that were taken for every character. This code has been beaten on for a long time in linux-next with no reported regressions. Other than that, a range of serial and tty driver updates and revisions. Full details in the shortlog" * tag 'tty-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (226 commits) hvc_xen: Remove unnecessary __GFP_ZERO from kzalloc serial: imx: initialize the local variable tty: ar933x_uart: add device tree support and binding documentation tty: ar933x_uart: allow to build the driver as a module ARM: dts: msm: Update uartdm compatible strings devicetree: serial: Document msm_serial bindings serial: unify serial bindings into a single dir serial: fsl-imx-uart: Cleanup duplicate device tree binding tty: ar933x_uart: use config_enabled() macro to clean up ifdefs tty: ar933x_uart: remove superfluous assignment of ar933x_uart_driver.nr tty: ar933x_uart: use the clk API to get the uart clock tty: serial: cpm_uart: Adding proper request of GPIO used by cpm_uart driver serial: sirf: fix the amount of serial ports serial: sirf: define macro for some magic numbers of USP serial: icom: move array overflow checks earlier TTY: amiserial, remove unnecessary platform_set_drvdata() serial: st-asc: remove unnecessary platform_set_drvdata() msm_serial: Send more than 1 character on the console w/ UARTDM msm_serial: Add support for non-GSBI UARTDM devices msm_serial: Switch clock consumer strings and simplify code ...
This commit is contained in:
commit
2f01ea908b
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@ -10,13 +10,18 @@ Required properties:
|
|||
Optional properties:
|
||||
- atmel,use-dma-rx: use of PDC or DMA for receiving data
|
||||
- atmel,use-dma-tx: use of PDC or DMA for transmitting data
|
||||
- add dma bindings for dma transfer:
|
||||
- dmas: DMA specifier, consisting of a phandle to DMA controller node,
|
||||
memory peripheral interface and USART DMA channel ID, FIFO configuration.
|
||||
Refer to dma.txt and atmel-dma.txt for details.
|
||||
- dma-names: "rx" for RX channel, "tx" for TX channel.
|
||||
|
||||
<chip> compatible description:
|
||||
- at91rm9200: legacy USART support
|
||||
- at91sam9260: generic USART implementation for SAM9 SoCs
|
||||
|
||||
Example:
|
||||
|
||||
- use PDC:
|
||||
usart0: serial@fff8c000 {
|
||||
compatible = "atmel,at91sam9260-usart";
|
||||
reg = <0xfff8c000 0x4000>;
|
||||
|
@ -25,3 +30,14 @@ Example:
|
|||
atmel,use-dma-tx;
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||||
};
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||||
|
||||
- use DMA:
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usart0: serial@f001c000 {
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||||
compatible = "atmel,at91sam9260-usart";
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||||
reg = <0xf001c000 0x100>;
|
||||
interrupts = <12 4 5>;
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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dmas = <&dma0 2 0x3>,
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<&dma0 2 0x204>;
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dma-names = "tx", "rx";
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};
|
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@ -1,35 +1,29 @@
|
|||
* Freescale i.MX UART controller
|
||||
* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
|
||||
|
||||
Required properties:
|
||||
- compatible : should be "fsl,imx21-uart"
|
||||
- compatible : Should be "fsl,<soc>-uart"
|
||||
- reg : Address and length of the register set for the device
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||||
- interrupts : Should contain UART interrupt number
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||||
- interrupts : Should contain uart interrupt
|
||||
|
||||
Optional properties:
|
||||
- fsl,uart-has-rtscts: indicate that RTS/CTS signals are used
|
||||
- fsl,uart-has-rtscts : Indicate the uart has rts and cts
|
||||
- fsl,irda-mode : Indicate the uart supports irda mode
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||||
- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
|
||||
is DCE mode by default.
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||||
|
||||
Note: Each uart controller should have an alias correctly numbered
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||||
in "aliases" node.
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||||
|
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Example:
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|
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- From imx51.dtsi:
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aliases {
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||||
serial0 = &uart1;
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serial1 = &uart2;
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serial2 = &uart3;
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||||
};
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uart1: serial@73fbc000 {
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compatible = "fsl,imx51-uart", "fsl,imx21-uart";
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reg = <0x73fbc000 0x4000>;
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interrupts = <31>;
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||||
status = "disabled";
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||||
}
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||||
|
||||
- From imx51-babbage.dts:
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uart1: serial@73fbc000 {
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fsl,uart-has-rtscts;
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status = "okay";
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fsl,dte-mode;
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||||
};
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||||
|
||||
|
|
|
@ -10,6 +10,10 @@ Required properties:
|
|||
Refer to dma.txt and fsl-mxs-dma.txt for details.
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||||
- dma-names: "rx" for RX channel, "tx" for TX channel.
|
||||
|
||||
Optional properties:
|
||||
- fsl,uart-has-rtscts : Indicate the UART has RTS and CTS lines,
|
||||
it also means you enable the DMA support for this UART.
|
||||
|
||||
Example:
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auart0: serial@8006a000 {
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||||
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
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|
@ -0,0 +1,25 @@
|
|||
* MSM Serial UART
|
||||
|
||||
The MSM serial UART hardware is designed for low-speed use cases where a
|
||||
dma-engine isn't needed. From a software perspective it's mostly compatible
|
||||
with the MSM serial UARTDM except that it only supports reading and writing one
|
||||
character at a time.
|
||||
|
||||
Required properties:
|
||||
- compatible: Should contain "qcom,msm-uart"
|
||||
- reg: Should contain UART register location and length.
|
||||
- interrupts: Should contain UART interrupt.
|
||||
- clocks: Should contain the core clock.
|
||||
- clock-names: Should be "core".
|
||||
|
||||
Example:
|
||||
|
||||
A uart device at 0xa9c00000 with interrupt 11.
|
||||
|
||||
serial@a9c00000 {
|
||||
compatible = "qcom,msm-uart";
|
||||
reg = <0xa9c00000 0x1000>;
|
||||
interrupts = <11>;
|
||||
clocks = <&uart_cxc>;
|
||||
clock-names = "core";
|
||||
};
|
|
@ -0,0 +1,53 @@
|
|||
* MSM Serial UARTDM
|
||||
|
||||
The MSM serial UARTDM hardware is designed for high-speed use cases where the
|
||||
transmit and/or receive channels can be offloaded to a dma-engine. From a
|
||||
software perspective it's mostly compatible with the MSM serial UART except
|
||||
that it supports reading and writing multiple characters at a time.
|
||||
|
||||
Required properties:
|
||||
- compatible: Should contain at least "qcom,msm-uartdm".
|
||||
A more specific property should be specified as follows depending
|
||||
on the version:
|
||||
"qcom,msm-uartdm-v1.1"
|
||||
"qcom,msm-uartdm-v1.2"
|
||||
"qcom,msm-uartdm-v1.3"
|
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"qcom,msm-uartdm-v1.4"
|
||||
- reg: Should contain UART register locations and lengths. The first
|
||||
register shall specify the main control registers. An optional second
|
||||
register location shall specify the GSBI control region.
|
||||
"qcom,msm-uartdm-v1.3" is the only compatible value that might
|
||||
need the GSBI control region.
|
||||
- interrupts: Should contain UART interrupt.
|
||||
- clocks: Should contain the core clock and the AHB clock.
|
||||
- clock-names: Should be "core" for the core clock and "iface" for the
|
||||
AHB clock.
|
||||
|
||||
Optional properties:
|
||||
- dmas: Should contain dma specifiers for transmit and receive channels
|
||||
- dma-names: Should contain "tx" for transmit and "rx" for receive channels
|
||||
|
||||
Examples:
|
||||
|
||||
A uartdm v1.4 device with dma capabilities.
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|
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serial@f991e000 {
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compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
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reg = <0xf991e000 0x1000>;
|
||||
interrupts = <0 108 0x0>;
|
||||
clocks = <&blsp1_uart2_apps_cxc>, <&blsp1_ahb_cxc>;
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clock-names = "core", "iface";
|
||||
dmas = <&dma0 0>, <&dma0 1>;
|
||||
dma-names = "tx", "rx";
|
||||
};
|
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|
||||
A uartdm v1.3 device without dma capabilities and part of a GSBI complex.
|
||||
|
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serial@19c40000 {
|
||||
compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
|
||||
reg = <0x19c40000 0x1000>,
|
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<0x19c00000 0x1000>;
|
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interrupts = <0 195 0x0>;
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clocks = <&gsbi5_uart_cxc>, <&gsbi5_ahb_cxc>;
|
||||
clock-names = "core", "iface";
|
||||
};
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|
@ -0,0 +1,33 @@
|
|||
* CSR SiRFprimaII/atlasVI Universal Synchronous Asynchronous Receiver/Transmitter *
|
||||
|
||||
Required properties:
|
||||
- compatible : Should be "sirf,prima2-uart" or "sirf, prima2-usp-uart"
|
||||
- reg : Offset and length of the register set for the device
|
||||
- interrupts : Should contain uart interrupt
|
||||
- fifosize : Should define hardware rx/tx fifo size
|
||||
- clocks : Should contain uart clock number
|
||||
|
||||
Optional properties:
|
||||
- sirf,uart-has-rtscts: we have hardware flow controller pins in hardware
|
||||
- rts-gpios: RTS pin for USP-based UART if sirf,uart-has-rtscts is true
|
||||
- cts-gpios: CTS pin for USP-based UART if sirf,uart-has-rtscts is true
|
||||
|
||||
Example:
|
||||
|
||||
uart0: uart@b0050000 {
|
||||
cell-index = <0>;
|
||||
compatible = "sirf,prima2-uart";
|
||||
reg = <0xb0050000 0x1000>;
|
||||
interrupts = <17>;
|
||||
fifosize = <128>;
|
||||
clocks = <&clks 13>;
|
||||
};
|
||||
|
||||
On the board-specific dts, we can put rts-gpios and cts-gpios like
|
||||
|
||||
usp@b0090000 {
|
||||
compatible = "sirf,prima2-usp-uart";
|
||||
sirf,uart-has-rtscts;
|
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rts-gpios = <&gpio 15 0>;
|
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cts-gpios = <&gpio 46 0>;
|
||||
};
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|
@ -0,0 +1,18 @@
|
|||
*st-asc(Serial Port)
|
||||
|
||||
Required properties:
|
||||
- compatible : Should be "st,asc".
|
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- reg, reg-names, interrupts, interrupt-names : Standard way to define device
|
||||
resources with names. look in
|
||||
Documentation/devicetree/bindings/resource-names.txt
|
||||
|
||||
Optional properties:
|
||||
- st,hw-flow-ctrl bool flag to enable hardware flow control.
|
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- st,force-m1 bool flat to force asc to be in Mode-1 recommeded
|
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for high bit rates (above 19.2K)
|
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Example:
|
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serial@fe440000{
|
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compatible = "st,asc";
|
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reg = <0xfe440000 0x2c>;
|
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interrupts = <0 209 0>;
|
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};
|
|
@ -1,22 +0,0 @@
|
|||
* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
|
||||
|
||||
Required properties:
|
||||
- compatible : Should be "fsl,<soc>-uart"
|
||||
- reg : Address and length of the register set for the device
|
||||
- interrupts : Should contain uart interrupt
|
||||
|
||||
Optional properties:
|
||||
- fsl,uart-has-rtscts : Indicate the uart has rts and cts
|
||||
- fsl,irda-mode : Indicate the uart supports irda mode
|
||||
- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
|
||||
is DCE mode by default.
|
||||
|
||||
Example:
|
||||
|
||||
serial@73fbc000 {
|
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compatible = "fsl,imx51-uart", "fsl,imx21-uart";
|
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reg = <0x73fbc000 0x4000>;
|
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interrupts = <31>;
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fsl,uart-has-rtscts;
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fsl,dte-mode;
|
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};
|
|
@ -1,27 +0,0 @@
|
|||
* Qualcomm MSM UART
|
||||
|
||||
Required properties:
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||||
- compatible :
|
||||
- "qcom,msm-uart", and one of "qcom,msm-hsuart" or
|
||||
"qcom,msm-lsuart".
|
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- reg : offset and length of the register set for the device
|
||||
for the hsuart operating in compatible mode, there should be a
|
||||
second pair describing the gsbi registers.
|
||||
- interrupts : should contain the uart interrupt.
|
||||
|
||||
There are two different UART blocks used in MSM devices,
|
||||
"qcom,msm-hsuart" and "qcom,msm-lsuart". The msm-serial driver is
|
||||
able to handle both of these, and matches against the "qcom,msm-uart"
|
||||
as the compatibility.
|
||||
|
||||
The registers for the "qcom,msm-hsuart" device need to specify both
|
||||
register blocks, even for the common driver.
|
||||
|
||||
Example:
|
||||
|
||||
uart@19c400000 {
|
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compatible = "qcom,msm-hsuart", "qcom,msm-uart";
|
||||
reg = <0x19c40000 0x1000>,
|
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<0x19c00000 0x1000>;
|
||||
interrupts = <195>;
|
||||
};
|
|
@ -0,0 +1,34 @@
|
|||
* Qualcomm Atheros AR9330 High-Speed UART
|
||||
|
||||
Required properties:
|
||||
|
||||
- compatible: Must be "qca,ar9330-uart"
|
||||
|
||||
- reg: Specifies the physical base address of the controller and
|
||||
the length of the memory mapped region.
|
||||
|
||||
- interrupt-parent: The phandle for the interrupt controller that
|
||||
services interrupts for this device.
|
||||
|
||||
- interrupts: Specifies the interrupt source of the parent interrupt
|
||||
controller. The format of the interrupt specifier depends on the
|
||||
parent interrupt controller.
|
||||
|
||||
Additional requirements:
|
||||
|
||||
Each UART port must have an alias correctly numbered in "aliases"
|
||||
node.
|
||||
|
||||
Example:
|
||||
|
||||
aliases {
|
||||
serial0 = &uart0;
|
||||
};
|
||||
|
||||
uart0: uart@18020000 {
|
||||
compatible = "qca,ar9330-uart";
|
||||
reg = <0x18020000 0x14>;
|
||||
|
||||
interrupt-parent = <&intc>;
|
||||
interrupts = <3>;
|
||||
};
|
|
@ -3322,6 +3322,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
them quite hard to use for exploits but
|
||||
might break your system.
|
||||
|
||||
vt.color= [VT] Default text color.
|
||||
Format: 0xYX, X = foreground, Y = background.
|
||||
Default: 0x07 = light gray on black.
|
||||
|
||||
vt.cur_default= [VT] Default cursor shape.
|
||||
Format: 0xCCBBAA, where AA, BB, and CC are the same as
|
||||
the parameters of the <Esc>[?A;B;Cc escape sequence;
|
||||
|
@ -3361,6 +3365,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
overridden by individual drivers. 0 will hide
|
||||
cursors, 1 will display them.
|
||||
|
||||
vt.italic= [VT] Default color for italic text; 0-15.
|
||||
Default: 2 = green.
|
||||
|
||||
vt.underline= [VT] Default color for underlined text; 0-15.
|
||||
Default: 3 = cyan.
|
||||
|
||||
watchdog timers [HW,WDT] For information on watchdog timers,
|
||||
see Documentation/watchdog/watchdog-parameters.txt
|
||||
or other driver-specific files in the
|
||||
|
|
|
@ -220,6 +220,7 @@
|
|||
auart0: serial@8006a000 {
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&auart0_pins_a>;
|
||||
fsl,uart-has-rtscts;
|
||||
status = "okay";
|
||||
};
|
||||
|
||||
|
|
|
@ -38,7 +38,7 @@
|
|||
};
|
||||
|
||||
serial@19c40000 {
|
||||
compatible = "qcom,msm-hsuart", "qcom,msm-uart";
|
||||
compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
|
||||
reg = <0x19c40000 0x1000>,
|
||||
<0x19c00000 0x1000>;
|
||||
interrupts = <0 195 0x0>;
|
||||
|
|
|
@ -38,7 +38,7 @@
|
|||
};
|
||||
|
||||
serial@16440000 {
|
||||
compatible = "qcom,msm-hsuart", "qcom,msm-uart";
|
||||
compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
|
||||
reg = <0x16440000 0x1000>,
|
||||
<0x16400000 0x1000>;
|
||||
interrupts = <0 154 0x0>;
|
||||
|
|
|
@ -456,9 +456,9 @@ static struct clk_pcom_desc msm_clocks_7x01a[] = {
|
|||
CLK_PCOM("tsif_ref_clk", TSIF_REF_CLK, NULL, 0),
|
||||
CLK_PCOM("tv_dac_clk", TV_DAC_CLK, NULL, 0),
|
||||
CLK_PCOM("tv_enc_clk", TV_ENC_CLK, NULL, 0),
|
||||
CLK_PCOM("uart_clk", UART1_CLK, "msm_serial.0", OFF),
|
||||
CLK_PCOM("uart_clk", UART2_CLK, "msm_serial.1", 0),
|
||||
CLK_PCOM("uart_clk", UART3_CLK, "msm_serial.2", OFF),
|
||||
CLK_PCOM("core", UART1_CLK, "msm_serial.0", OFF),
|
||||
CLK_PCOM("core", UART2_CLK, "msm_serial.1", 0),
|
||||
CLK_PCOM("core", UART3_CLK, "msm_serial.2", OFF),
|
||||
CLK_PCOM("uart1dm_clk", UART1DM_CLK, NULL, OFF),
|
||||
CLK_PCOM("uart2dm_clk", UART2DM_CLK, NULL, 0),
|
||||
CLK_PCOM("usb_hs_clk", USB_HS_CLK, "msm_hsusb", OFF),
|
||||
|
|
|
@ -211,7 +211,7 @@ static struct clk_pcom_desc msm_clocks_7x30[] = {
|
|||
CLK_PCOM("spi_pclk", SPI_P_CLK, NULL, 0),
|
||||
CLK_PCOM("tv_dac_clk", TV_DAC_CLK, NULL, 0),
|
||||
CLK_PCOM("tv_enc_clk", TV_ENC_CLK, NULL, 0),
|
||||
CLK_PCOM("uart_clk", UART2_CLK, "msm_serial.1", 0),
|
||||
CLK_PCOM("core", UART2_CLK, "msm_serial.1", 0),
|
||||
CLK_PCOM("usb_phy_clk", USB_PHY_CLK, NULL, 0),
|
||||
CLK_PCOM("usb_hs_clk", USB_HS_CLK, NULL, OFF),
|
||||
CLK_PCOM("usb_hs_pclk", USB_HS_P_CLK, NULL, OFF),
|
||||
|
|
|
@ -358,9 +358,9 @@ static struct clk_pcom_desc msm_clocks_8x50[] = {
|
|||
CLK_PCOM("tsif_ref_clk", TSIF_REF_CLK, NULL, 0),
|
||||
CLK_PCOM("tv_dac_clk", TV_DAC_CLK, NULL, 0),
|
||||
CLK_PCOM("tv_enc_clk", TV_ENC_CLK, NULL, 0),
|
||||
CLK_PCOM("uart_clk", UART1_CLK, NULL, OFF),
|
||||
CLK_PCOM("uart_clk", UART2_CLK, NULL, 0),
|
||||
CLK_PCOM("uart_clk", UART3_CLK, "msm_serial.2", OFF),
|
||||
CLK_PCOM("core", UART1_CLK, NULL, OFF),
|
||||
CLK_PCOM("core", UART2_CLK, NULL, 0),
|
||||
CLK_PCOM("core", UART3_CLK, "msm_serial.2", OFF),
|
||||
CLK_PCOM("uartdm_clk", UART1DM_CLK, NULL, OFF),
|
||||
CLK_PCOM("uartdm_clk", UART2DM_CLK, NULL, 0),
|
||||
CLK_PCOM("usb_hs_clk", USB_HS_CLK, NULL, OFF),
|
||||
|
|
|
@ -122,7 +122,6 @@ static struct resource sc26xx_rsrc[] = {
|
|||
|
||||
static struct sccnxp_pdata sccnxp_data = {
|
||||
.reg_shift = 2,
|
||||
.frequency = 3686400,
|
||||
.mctrl_cfg[0] = MCTRL_SIG(DTR_OP, LINE_OP7) |
|
||||
MCTRL_SIG(RTS_OP, LINE_OP3) |
|
||||
MCTRL_SIG(DSR_IP, LINE_IP5) |
|
||||
|
|
|
@ -123,14 +123,14 @@ static int irtty_change_speed(struct sir_dev *dev, unsigned speed)
|
|||
|
||||
tty = priv->tty;
|
||||
|
||||
mutex_lock(&tty->termios_mutex);
|
||||
down_write(&tty->termios_rwsem);
|
||||
old_termios = tty->termios;
|
||||
cflag = tty->termios.c_cflag;
|
||||
tty_encode_baud_rate(tty, speed, speed);
|
||||
if (tty->ops->set_termios)
|
||||
tty->ops->set_termios(tty, &old_termios);
|
||||
priv->io.speed = speed;
|
||||
mutex_unlock(&tty->termios_mutex);
|
||||
up_write(&tty->termios_rwsem);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -280,7 +280,7 @@ static inline void irtty_stop_receiver(struct tty_struct *tty, int stop)
|
|||
struct ktermios old_termios;
|
||||
int cflag;
|
||||
|
||||
mutex_lock(&tty->termios_mutex);
|
||||
down_write(&tty->termios_rwsem);
|
||||
old_termios = tty->termios;
|
||||
cflag = tty->termios.c_cflag;
|
||||
|
||||
|
@ -292,7 +292,7 @@ static inline void irtty_stop_receiver(struct tty_struct *tty, int stop)
|
|||
tty->termios.c_cflag = cflag;
|
||||
if (tty->ops->set_termios)
|
||||
tty->ops->set_termios(tty, &old_termios);
|
||||
mutex_unlock(&tty->termios_mutex);
|
||||
up_write(&tty->termios_rwsem);
|
||||
}
|
||||
|
||||
/*****************************************************************/
|
||||
|
|
|
@ -32,6 +32,7 @@ struct device_node *of_allnodes;
|
|||
EXPORT_SYMBOL(of_allnodes);
|
||||
struct device_node *of_chosen;
|
||||
struct device_node *of_aliases;
|
||||
static struct device_node *of_stdout;
|
||||
|
||||
DEFINE_MUTEX(of_aliases_mutex);
|
||||
|
||||
|
@ -1595,6 +1596,15 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
|
|||
of_chosen = of_find_node_by_path("/chosen");
|
||||
if (of_chosen == NULL)
|
||||
of_chosen = of_find_node_by_path("/chosen@0");
|
||||
|
||||
if (of_chosen) {
|
||||
const char *name;
|
||||
|
||||
name = of_get_property(of_chosen, "linux,stdout-path", NULL);
|
||||
if (name)
|
||||
of_stdout = of_find_node_by_path(name);
|
||||
}
|
||||
|
||||
of_aliases = of_find_node_by_path("/aliases");
|
||||
if (!of_aliases)
|
||||
return;
|
||||
|
@ -1703,3 +1713,19 @@ const char *of_prop_next_string(struct property *prop, const char *cur)
|
|||
return curv;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(of_prop_next_string);
|
||||
|
||||
/**
|
||||
* of_device_is_stdout_path - check if a device node matches the
|
||||
* linux,stdout-path property
|
||||
*
|
||||
* Check if this device node matches the linux,stdout-path property
|
||||
* in the chosen node. return true if yes, false otherwise.
|
||||
*/
|
||||
int of_device_is_stdout_path(struct device_node *dn)
|
||||
{
|
||||
if (!of_stdout)
|
||||
return false;
|
||||
|
||||
return of_stdout == dn;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(of_device_is_stdout_path);
|
||||
|
|
|
@ -390,7 +390,6 @@ void comedi_driver_unregister(struct comedi_driver *);
|
|||
*/
|
||||
#define PCI_VENDOR_ID_KOLTER 0x1001
|
||||
#define PCI_VENDOR_ID_ICP 0x104c
|
||||
#define PCI_VENDOR_ID_AMCC 0x10e8
|
||||
#define PCI_VENDOR_ID_DT 0x1116
|
||||
#define PCI_VENDOR_ID_IOTECH 0x1616
|
||||
#define PCI_VENDOR_ID_CONTEC 0x1221
|
||||
|
|
|
@ -1120,7 +1120,9 @@ static void dgrp_tty_close(struct tty_struct *tty, struct file *file)
|
|||
if (!sent_printer_offstr)
|
||||
dgrp_tty_flush_buffer(tty);
|
||||
|
||||
spin_unlock_irqrestore(&nd->nd_lock, lock_flags);
|
||||
tty_ldisc_flush(tty);
|
||||
spin_lock_irqsave(&nd->nd_lock, lock_flags);
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
|
@ -1785,8 +1785,6 @@ static int __exit amiga_serial_remove(struct platform_device *pdev)
|
|||
free_irq(IRQ_AMIGA_TBE, state);
|
||||
free_irq(IRQ_AMIGA_RBF, state);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
|
|
@ -361,7 +361,12 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
|
|||
tty->driver_data = NULL;
|
||||
tty_port_put(&hp->port);
|
||||
printk(KERN_ERR "hvc_open: request_irq failed with rc %d.\n", rc);
|
||||
}
|
||||
} else
|
||||
/* We are ready... raise DTR/RTS */
|
||||
if (C_BAUD(tty))
|
||||
if (hp->ops->dtr_rts)
|
||||
hp->ops->dtr_rts(hp, 1);
|
||||
|
||||
/* Force wakeup of the polling thread */
|
||||
hvc_kick();
|
||||
|
||||
|
@ -393,6 +398,10 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
|
|||
/* We are done with the tty pointer now. */
|
||||
tty_port_tty_set(&hp->port, NULL);
|
||||
|
||||
if (C_HUPCL(tty))
|
||||
if (hp->ops->dtr_rts)
|
||||
hp->ops->dtr_rts(hp, 0);
|
||||
|
||||
if (hp->ops->notifier_del)
|
||||
hp->ops->notifier_del(hp, hp->data);
|
||||
|
||||
|
|
|
@ -75,6 +75,9 @@ struct hv_ops {
|
|||
/* tiocmget/set implementation */
|
||||
int (*tiocmget)(struct hvc_struct *hp);
|
||||
int (*tiocmset)(struct hvc_struct *hp, unsigned int set, unsigned int clear);
|
||||
|
||||
/* Callbacks to handle tty ports */
|
||||
void (*dtr_rts)(struct hvc_struct *hp, int raise);
|
||||
};
|
||||
|
||||
/* Register a vterm and a slot index for use as a console (console_init) */
|
||||
|
|
|
@ -655,6 +655,49 @@ static void hvc_iucv_notifier_hangup(struct hvc_struct *hp, int id)
|
|||
spin_unlock_bh(&priv->lock);
|
||||
}
|
||||
|
||||
/**
|
||||
* hvc_iucv_dtr_rts() - HVC notifier for handling DTR/RTS
|
||||
* @hp: Pointer the HVC device (struct hvc_struct)
|
||||
* @raise: Non-zero to raise or zero to lower DTR/RTS lines
|
||||
*
|
||||
* This routine notifies the HVC back-end to raise or lower DTR/RTS
|
||||
* lines. Raising DTR/RTS is ignored. Lowering DTR/RTS indicates to
|
||||
* drop the IUCV connection (similar to hang up the modem).
|
||||
*/
|
||||
static void hvc_iucv_dtr_rts(struct hvc_struct *hp, int raise)
|
||||
{
|
||||
struct hvc_iucv_private *priv;
|
||||
struct iucv_path *path;
|
||||
|
||||
/* Raising the DTR/RTS is ignored as IUCV connections can be
|
||||
* established at any times.
|
||||
*/
|
||||
if (raise)
|
||||
return;
|
||||
|
||||
priv = hvc_iucv_get_private(hp->vtermno);
|
||||
if (!priv)
|
||||
return;
|
||||
|
||||
/* Lowering the DTR/RTS lines disconnects an established IUCV
|
||||
* connection.
|
||||
*/
|
||||
flush_sndbuf_sync(priv);
|
||||
|
||||
spin_lock_bh(&priv->lock);
|
||||
path = priv->path; /* save reference to IUCV path */
|
||||
priv->path = NULL;
|
||||
priv->iucv_state = IUCV_DISCONN;
|
||||
spin_unlock_bh(&priv->lock);
|
||||
|
||||
/* Sever IUCV path outside of priv->lock due to lock ordering of:
|
||||
* priv->lock <--> iucv_table_lock */
|
||||
if (path) {
|
||||
iucv_path_sever(path, NULL);
|
||||
iucv_path_free(path);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* hvc_iucv_notifier_del() - HVC notifier for closing a TTY for the last time.
|
||||
* @hp: Pointer to the HVC device (struct hvc_struct)
|
||||
|
@ -662,15 +705,15 @@ static void hvc_iucv_notifier_hangup(struct hvc_struct *hp, int id)
|
|||
* the index of an struct hvc_iucv_private instance.
|
||||
*
|
||||
* This routine notifies the HVC back-end that the last tty device fd has been
|
||||
* closed. The function calls hvc_iucv_cleanup() to clean up the struct
|
||||
* hvc_iucv_private instance.
|
||||
* closed. The function cleans up tty resources. The clean-up of the IUCV
|
||||
* connection is done in hvc_iucv_dtr_rts() and depends on the HUPCL termios
|
||||
* control setting.
|
||||
*
|
||||
* Locking: struct hvc_iucv_private->lock
|
||||
*/
|
||||
static void hvc_iucv_notifier_del(struct hvc_struct *hp, int id)
|
||||
{
|
||||
struct hvc_iucv_private *priv;
|
||||
struct iucv_path *path;
|
||||
|
||||
priv = hvc_iucv_get_private(id);
|
||||
if (!priv)
|
||||
|
@ -679,17 +722,11 @@ static void hvc_iucv_notifier_del(struct hvc_struct *hp, int id)
|
|||
flush_sndbuf_sync(priv);
|
||||
|
||||
spin_lock_bh(&priv->lock);
|
||||
path = priv->path; /* save reference to IUCV path */
|
||||
priv->path = NULL;
|
||||
hvc_iucv_cleanup(priv);
|
||||
destroy_tty_buffer_list(&priv->tty_outqueue);
|
||||
destroy_tty_buffer_list(&priv->tty_inqueue);
|
||||
priv->tty_state = TTY_CLOSED;
|
||||
priv->sndbuf_len = 0;
|
||||
spin_unlock_bh(&priv->lock);
|
||||
|
||||
/* sever IUCV path outside of priv->lock due to lock ordering of:
|
||||
* priv->lock <--> iucv_table_lock */
|
||||
if (path) {
|
||||
iucv_path_sever(path, NULL);
|
||||
iucv_path_free(path);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -931,6 +968,7 @@ static const struct hv_ops hvc_iucv_ops = {
|
|||
.notifier_add = hvc_iucv_notifier_add,
|
||||
.notifier_del = hvc_iucv_notifier_del,
|
||||
.notifier_hangup = hvc_iucv_notifier_hangup,
|
||||
.dtr_rts = hvc_iucv_dtr_rts,
|
||||
};
|
||||
|
||||
/* Suspend / resume device operations */
|
||||
|
|
|
@ -208,7 +208,7 @@ static int xen_hvm_console_init(void)
|
|||
|
||||
info = vtermno_to_xencons(HVC_COOKIE);
|
||||
if (!info) {
|
||||
info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL | __GFP_ZERO);
|
||||
info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
} else if (info->intf != NULL) {
|
||||
|
@ -257,7 +257,7 @@ static int xen_pv_console_init(void)
|
|||
|
||||
info = vtermno_to_xencons(HVC_COOKIE);
|
||||
if (!info) {
|
||||
info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL | __GFP_ZERO);
|
||||
info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
} else if (info->intf != NULL) {
|
||||
|
@ -284,7 +284,7 @@ static int xen_initial_domain_console_init(void)
|
|||
|
||||
info = vtermno_to_xencons(HVC_COOKIE);
|
||||
if (!info) {
|
||||
info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL | __GFP_ZERO);
|
||||
info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
|
|
@ -807,7 +807,7 @@ static int gsm_dlci_data_output(struct gsm_mux *gsm, struct gsm_dlci *dlci)
|
|||
int h = dlci->adaption - 1;
|
||||
|
||||
total_size = 0;
|
||||
while(1) {
|
||||
while (1) {
|
||||
len = kfifo_len(dlci->fifo);
|
||||
if (len == 0)
|
||||
return total_size;
|
||||
|
@ -827,8 +827,8 @@ static int gsm_dlci_data_output(struct gsm_mux *gsm, struct gsm_dlci *dlci)
|
|||
switch (dlci->adaption) {
|
||||
case 1: /* Unstructured */
|
||||
break;
|
||||
case 2: /* Unstructed with modem bits. Always one byte as we never
|
||||
send inline break data */
|
||||
case 2: /* Unstructed with modem bits.
|
||||
Always one byte as we never send inline break data */
|
||||
*dp++ = gsm_encode_modem(dlci);
|
||||
break;
|
||||
}
|
||||
|
@ -968,7 +968,7 @@ static void gsm_dlci_data_kick(struct gsm_dlci *dlci)
|
|||
unsigned long flags;
|
||||
int sweep;
|
||||
|
||||
if (dlci->constipated)
|
||||
if (dlci->constipated)
|
||||
return;
|
||||
|
||||
spin_lock_irqsave(&dlci->gsm->tx_lock, flags);
|
||||
|
@ -981,7 +981,7 @@ static void gsm_dlci_data_kick(struct gsm_dlci *dlci)
|
|||
gsm_dlci_data_output(dlci->gsm, dlci);
|
||||
}
|
||||
if (sweep)
|
||||
gsm_dlci_data_sweep(dlci->gsm);
|
||||
gsm_dlci_data_sweep(dlci->gsm);
|
||||
spin_unlock_irqrestore(&dlci->gsm->tx_lock, flags);
|
||||
}
|
||||
|
||||
|
@ -1138,7 +1138,7 @@ static void gsm_control_modem(struct gsm_mux *gsm, u8 *data, int clen)
|
|||
static void gsm_control_rls(struct gsm_mux *gsm, u8 *data, int clen)
|
||||
{
|
||||
struct tty_port *port;
|
||||
unsigned int addr = 0 ;
|
||||
unsigned int addr = 0;
|
||||
u8 bits;
|
||||
int len = clen;
|
||||
u8 *dp = data;
|
||||
|
@ -1740,10 +1740,11 @@ static void gsm_queue(struct gsm_mux *gsm)
|
|||
|
||||
if ((gsm->control & ~PF) == UI)
|
||||
gsm->fcs = gsm_fcs_add_block(gsm->fcs, gsm->buf, gsm->len);
|
||||
if (gsm->encoding == 0){
|
||||
/* WARNING: gsm->received_fcs is used for gsm->encoding = 0 only.
|
||||
In this case it contain the last piece of data
|
||||
required to generate final CRC */
|
||||
if (gsm->encoding == 0) {
|
||||
/* WARNING: gsm->received_fcs is used for
|
||||
gsm->encoding = 0 only.
|
||||
In this case it contain the last piece of data
|
||||
required to generate final CRC */
|
||||
gsm->fcs = gsm_fcs_add(gsm->fcs, gsm->received_fcs);
|
||||
}
|
||||
if (gsm->fcs != GOOD_FCS) {
|
||||
|
@ -2904,9 +2905,11 @@ static int gsmtty_install(struct tty_driver *driver, struct tty_struct *tty)
|
|||
gsm = gsm_mux[mux];
|
||||
if (gsm->dead)
|
||||
return -EL2HLT;
|
||||
/* If DLCI 0 is not yet fully open return an error. This is ok from a locking
|
||||
perspective as we don't have to worry about this if DLCI0 is lost */
|
||||
if (gsm->dlci[0] && gsm->dlci[0]->state != DLCI_OPEN)
|
||||
/* If DLCI 0 is not yet fully open return an error.
|
||||
This is ok from a locking
|
||||
perspective as we don't have to worry about this
|
||||
if DLCI0 is lost */
|
||||
if (gsm->dlci[0] && gsm->dlci[0]->state != DLCI_OPEN)
|
||||
return -EL2NSYNC;
|
||||
dlci = gsm->dlci[line];
|
||||
if (dlci == NULL) {
|
||||
|
|
1416
drivers/tty/n_tty.c
1416
drivers/tty/n_tty.c
File diff suppressed because it is too large
Load Diff
|
@ -89,17 +89,13 @@ static void pty_unthrottle(struct tty_struct *tty)
|
|||
* pty_space - report space left for writing
|
||||
* @to: tty we are writing into
|
||||
*
|
||||
* The tty buffers allow 64K but we sneak a peak and clip at 8K this
|
||||
* allows a lot of overspill room for echo and other fun messes to
|
||||
* be handled properly
|
||||
* Limit the buffer space used by ptys to 8k.
|
||||
*/
|
||||
|
||||
static int pty_space(struct tty_struct *to)
|
||||
{
|
||||
int n = 8192 - to->port->buf.memory_used;
|
||||
if (n < 0)
|
||||
return 0;
|
||||
return n;
|
||||
int n = tty_buffer_space_avail(to->port);
|
||||
return min(n, 8192);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -125,10 +121,8 @@ static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c)
|
|||
/* Stuff the data into the input queue of the other end */
|
||||
c = tty_insert_flip_string(to->port, buf, c);
|
||||
/* And shovel */
|
||||
if (c) {
|
||||
if (c)
|
||||
tty_flip_buffer_push(to->port);
|
||||
tty_wakeup(tty);
|
||||
}
|
||||
}
|
||||
return c;
|
||||
}
|
||||
|
@ -287,7 +281,7 @@ static int pty_resize(struct tty_struct *tty, struct winsize *ws)
|
|||
struct tty_struct *pty = tty->link;
|
||||
|
||||
/* For a PTY we need to lock the tty side */
|
||||
mutex_lock(&tty->termios_mutex);
|
||||
mutex_lock(&tty->winsize_mutex);
|
||||
if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
|
||||
goto done;
|
||||
|
||||
|
@ -314,7 +308,7 @@ static int pty_resize(struct tty_struct *tty, struct winsize *ws)
|
|||
tty->winsize = *ws;
|
||||
pty->winsize = *ws; /* Never used so will go away soon */
|
||||
done:
|
||||
mutex_unlock(&tty->termios_mutex);
|
||||
mutex_unlock(&tty->winsize_mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
@ -3062,7 +3062,7 @@ void serial8250_resume_port(int line)
|
|||
*/
|
||||
static int serial8250_probe(struct platform_device *dev)
|
||||
{
|
||||
struct plat_serial8250_port *p = dev->dev.platform_data;
|
||||
struct plat_serial8250_port *p = dev_get_platdata(&dev->dev);
|
||||
struct uart_8250_port uart;
|
||||
int ret, i, irqflag = 0;
|
||||
|
||||
|
|
|
@ -57,11 +57,25 @@
|
|||
|
||||
struct dw8250_data {
|
||||
int last_lcr;
|
||||
int last_mcr;
|
||||
int line;
|
||||
struct clk *clk;
|
||||
u8 usr_reg;
|
||||
};
|
||||
|
||||
static inline int dw8250_modify_msr(struct uart_port *p, int offset, int value)
|
||||
{
|
||||
struct dw8250_data *d = p->private_data;
|
||||
|
||||
/* If reading MSR, report CTS asserted when auto-CTS/RTS enabled */
|
||||
if (offset == UART_MSR && d->last_mcr & UART_MCR_AFE) {
|
||||
value |= UART_MSR_CTS;
|
||||
value &= ~UART_MSR_DCTS;
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
static void dw8250_serial_out(struct uart_port *p, int offset, int value)
|
||||
{
|
||||
struct dw8250_data *d = p->private_data;
|
||||
|
@ -69,15 +83,17 @@ static void dw8250_serial_out(struct uart_port *p, int offset, int value)
|
|||
if (offset == UART_LCR)
|
||||
d->last_lcr = value;
|
||||
|
||||
offset <<= p->regshift;
|
||||
writeb(value, p->membase + offset);
|
||||
if (offset == UART_MCR)
|
||||
d->last_mcr = value;
|
||||
|
||||
writeb(value, p->membase + (offset << p->regshift));
|
||||
}
|
||||
|
||||
static unsigned int dw8250_serial_in(struct uart_port *p, int offset)
|
||||
{
|
||||
offset <<= p->regshift;
|
||||
unsigned int value = readb(p->membase + (offset << p->regshift));
|
||||
|
||||
return readb(p->membase + offset);
|
||||
return dw8250_modify_msr(p, offset, value);
|
||||
}
|
||||
|
||||
/* Read Back (rb) version to ensure register access ording. */
|
||||
|
@ -94,15 +110,17 @@ static void dw8250_serial_out32(struct uart_port *p, int offset, int value)
|
|||
if (offset == UART_LCR)
|
||||
d->last_lcr = value;
|
||||
|
||||
offset <<= p->regshift;
|
||||
writel(value, p->membase + offset);
|
||||
if (offset == UART_MCR)
|
||||
d->last_mcr = value;
|
||||
|
||||
writel(value, p->membase + (offset << p->regshift));
|
||||
}
|
||||
|
||||
static unsigned int dw8250_serial_in32(struct uart_port *p, int offset)
|
||||
{
|
||||
offset <<= p->regshift;
|
||||
unsigned int value = readl(p->membase + (offset << p->regshift));
|
||||
|
||||
return readl(p->membase + offset);
|
||||
return dw8250_modify_msr(p, offset, value);
|
||||
}
|
||||
|
||||
static int dw8250_handle_irq(struct uart_port *p)
|
||||
|
|
|
@ -194,7 +194,7 @@ static int __init parse_options(struct early_serial8250_device *device,
|
|||
options++;
|
||||
device->baud = simple_strtoul(options, NULL, 0);
|
||||
length = min(strcspn(options, " ") + 1,
|
||||
sizeof(device->options));
|
||||
(size_t)(sizeof(device->options)));
|
||||
strlcpy(device->options, options, length);
|
||||
} else {
|
||||
device->baud = probe_baud(port);
|
||||
|
|
|
@ -95,25 +95,23 @@ static int serial8250_em_probe(struct platform_device *pdev)
|
|||
struct resource *irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
||||
struct serial8250_em_priv *priv;
|
||||
struct uart_8250_port up;
|
||||
int ret = -EINVAL;
|
||||
int ret;
|
||||
|
||||
if (!regs || !irq) {
|
||||
dev_err(&pdev->dev, "missing registers or irq\n");
|
||||
goto err0;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
||||
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv) {
|
||||
dev_err(&pdev->dev, "unable to allocate private data\n");
|
||||
ret = -ENOMEM;
|
||||
goto err0;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
priv->sclk = clk_get(&pdev->dev, "sclk");
|
||||
priv->sclk = devm_clk_get(&pdev->dev, "sclk");
|
||||
if (IS_ERR(priv->sclk)) {
|
||||
dev_err(&pdev->dev, "unable to get clock\n");
|
||||
ret = PTR_ERR(priv->sclk);
|
||||
goto err1;
|
||||
return PTR_ERR(priv->sclk);
|
||||
}
|
||||
|
||||
memset(&up, 0, sizeof(up));
|
||||
|
@ -136,20 +134,13 @@ static int serial8250_em_probe(struct platform_device *pdev)
|
|||
ret = serial8250_register_8250_port(&up);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "unable to register 8250 port\n");
|
||||
goto err2;
|
||||
clk_disable(priv->sclk);
|
||||
return ret;
|
||||
}
|
||||
|
||||
priv->line = ret;
|
||||
platform_set_drvdata(pdev, priv);
|
||||
return 0;
|
||||
|
||||
err2:
|
||||
clk_disable(priv->sclk);
|
||||
clk_put(priv->sclk);
|
||||
err1:
|
||||
kfree(priv);
|
||||
err0:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int serial8250_em_remove(struct platform_device *pdev)
|
||||
|
@ -158,8 +149,6 @@ static int serial8250_em_remove(struct platform_device *pdev)
|
|||
|
||||
serial8250_unregister_port(priv->line);
|
||||
clk_disable(priv->sclk);
|
||||
clk_put(priv->sclk);
|
||||
kfree(priv);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
@ -1565,6 +1565,7 @@ pci_wch_ch353_setup(struct serial_private *priv,
|
|||
#define PCI_DEVICE_ID_COMMTECH_4228PCIE 0x0021
|
||||
#define PCI_DEVICE_ID_COMMTECH_4222PCIE 0x0022
|
||||
#define PCI_DEVICE_ID_BROADCOM_TRUMANAGE 0x160a
|
||||
#define PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800 0x818e
|
||||
|
||||
#define PCI_VENDOR_ID_SUNIX 0x1fd4
|
||||
#define PCI_DEVICE_ID_SUNIX_1999 0x1999
|
||||
|
@ -1587,8 +1588,8 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
|
|||
* ADDI-DATA GmbH communication cards <info@addi-data.com>
|
||||
*/
|
||||
{
|
||||
.vendor = PCI_VENDOR_ID_ADDIDATA_OLD,
|
||||
.device = PCI_DEVICE_ID_ADDIDATA_APCI7800,
|
||||
.vendor = PCI_VENDOR_ID_AMCC,
|
||||
.device = PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800,
|
||||
.subvendor = PCI_ANY_ID,
|
||||
.subdevice = PCI_ANY_ID,
|
||||
.setup = addidata_apci7800_setup,
|
||||
|
@ -4697,8 +4698,8 @@ static struct pci_device_id serial_pci_tbl[] = {
|
|||
0,
|
||||
pbn_b0_1_115200 },
|
||||
|
||||
{ PCI_VENDOR_ID_ADDIDATA_OLD,
|
||||
PCI_DEVICE_ID_ADDIDATA_APCI7800,
|
||||
{ PCI_VENDOR_ID_AMCC,
|
||||
PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800,
|
||||
PCI_ANY_ID,
|
||||
PCI_ANY_ID,
|
||||
0,
|
||||
|
@ -4797,6 +4798,12 @@ static struct pci_device_id serial_pci_tbl[] = {
|
|||
PCI_VENDOR_ID_IBM, 0x0299,
|
||||
0, 0, pbn_b0_bt_2_115200 },
|
||||
|
||||
/*
|
||||
* other NetMos 9835 devices are most likely handled by the
|
||||
* parport_serial driver, check drivers/parport/parport_serial.c
|
||||
* before adding them here.
|
||||
*/
|
||||
|
||||
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9901,
|
||||
0xA000, 0x1000,
|
||||
0, 0, pbn_b0_1_115200 },
|
||||
|
|
|
@ -116,6 +116,8 @@ config SERIAL_8250_PCI
|
|||
This builds standard PCI serial support. You may be able to
|
||||
disable this feature if you only need legacy serial support.
|
||||
Saves about 9K.
|
||||
Note that serial ports on NetMos 9835 Multi-I/O cards are handled
|
||||
by the parport_serial driver, enabled with CONFIG_PARPORT_SERIAL.
|
||||
|
||||
config SERIAL_8250_HP300
|
||||
tristate
|
||||
|
|
|
@ -291,13 +291,13 @@ config SERIAL_MAX3100
|
|||
|
||||
config SERIAL_MAX310X
|
||||
bool "MAX310X support"
|
||||
depends on SPI
|
||||
depends on SPI_MASTER
|
||||
select SERIAL_CORE
|
||||
select REGMAP_SPI if SPI
|
||||
select REGMAP_SPI if SPI_MASTER
|
||||
default n
|
||||
help
|
||||
This selects support for an advanced UART from Maxim (Dallas).
|
||||
Supported ICs are MAX3107, MAX3108.
|
||||
Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
|
||||
Each IC contains 128 words each of receive and transmit FIFO
|
||||
that can be controlled through I2C or high-speed SPI.
|
||||
|
||||
|
@ -1401,13 +1401,16 @@ config SERIAL_XILINX_PS_UART_CONSOLE
|
|||
Enable a Xilinx PS UART port to be the system console.
|
||||
|
||||
config SERIAL_AR933X
|
||||
bool "AR933X serial port support"
|
||||
depends on SOC_AR933X
|
||||
tristate "AR933X serial port support"
|
||||
depends on HAVE_CLK && SOC_AR933X
|
||||
select SERIAL_CORE
|
||||
help
|
||||
If you have an Atheros AR933X SOC based board and want to use the
|
||||
built-in UART of the SoC, say Y to this option.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called ar933x_uart.
|
||||
|
||||
config SERIAL_AR933X_CONSOLE
|
||||
bool "Console on AR933X serial port"
|
||||
depends on SERIAL_AR933X=y
|
||||
|
@ -1424,8 +1427,8 @@ config SERIAL_AR933X_NR_UARTS
|
|||
to support.
|
||||
|
||||
config SERIAL_EFM32_UART
|
||||
tristate "EFM32 UART/USART port."
|
||||
depends on ARCH_EFM32
|
||||
tristate "EFM32 UART/USART port"
|
||||
depends on ARM && (ARCH_EFM32 || COMPILE_TEST)
|
||||
select SERIAL_CORE
|
||||
help
|
||||
This driver support the USART and UART ports on
|
||||
|
@ -1497,6 +1500,22 @@ config SERIAL_FSL_LPUART_CONSOLE
|
|||
If you have enabled the lpuart serial port on the Freescale SoCs,
|
||||
you can make it the console by answering Y to this option.
|
||||
|
||||
config SERIAL_ST_ASC
|
||||
tristate "ST ASC serial port support"
|
||||
select SERIAL_CORE
|
||||
help
|
||||
This driver is for the on-chip Asychronous Serial Controller on
|
||||
STMicroelectronics STi SoCs.
|
||||
ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
|
||||
It support all industry standard baud rates.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
config SERIAL_ST_ASC_CONSOLE
|
||||
bool "Support for console on ST ASC"
|
||||
depends on SERIAL_ST_ASC=y
|
||||
select SERIAL_CORE_CONSOLE
|
||||
|
||||
endmenu
|
||||
|
||||
endif # TTY
|
||||
|
|
|
@ -65,6 +65,7 @@ obj-$(CONFIG_SERIAL_KGDB_NMI) += kgdb_nmi.o
|
|||
obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
|
||||
obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
|
||||
obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
|
||||
obj-$(CONFIG_SERIAL_ST_ASC) += st-asc.o
|
||||
obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
|
||||
obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
|
||||
obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o
|
||||
|
|
|
@ -139,7 +139,9 @@ static void altera_jtaguart_rx_chars(struct altera_jtaguart *pp)
|
|||
uart_insert_char(port, 0, 0, ch, flag);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(&port->state->port);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
static void altera_jtaguart_tx_chars(struct altera_jtaguart *pp)
|
||||
|
@ -408,7 +410,8 @@ static struct uart_driver altera_jtaguart_driver = {
|
|||
|
||||
static int altera_jtaguart_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct altera_jtaguart_platform_uart *platp = pdev->dev.platform_data;
|
||||
struct altera_jtaguart_platform_uart *platp =
|
||||
dev_get_platdata(&pdev->dev);
|
||||
struct uart_port *port;
|
||||
struct resource *res_irq, *res_mem;
|
||||
int i = pdev->id;
|
||||
|
|
|
@ -231,7 +231,9 @@ static void altera_uart_rx_chars(struct altera_uart *pp)
|
|||
flag);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(&port->state->port);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
static void altera_uart_tx_chars(struct altera_uart *pp)
|
||||
|
@ -534,7 +536,7 @@ static int altera_uart_get_of_uartclk(struct platform_device *pdev,
|
|||
|
||||
static int altera_uart_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct altera_uart_platform_uart *platp = pdev->dev.platform_data;
|
||||
struct altera_uart_platform_uart *platp = dev_get_platdata(&pdev->dev);
|
||||
struct uart_port *port;
|
||||
struct resource *res_mem;
|
||||
struct resource *res_irq;
|
||||
|
|
|
@ -721,7 +721,7 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
|
|||
uap->port.flags = UPF_BOOT_AUTOCONF;
|
||||
uap->port.line = i;
|
||||
uap->dev = dev;
|
||||
uap->data = dev->dev.platform_data;
|
||||
uap->data = dev_get_platdata(&dev->dev);
|
||||
|
||||
amba_ports[i] = uap;
|
||||
|
||||
|
|
|
@ -265,7 +265,7 @@ static void pl011_sgbuf_free(struct dma_chan *chan, struct pl011_sgbuf *sg,
|
|||
static void pl011_dma_probe_initcall(struct device *dev, struct uart_amba_port *uap)
|
||||
{
|
||||
/* DMA is the sole user of the platform data right now */
|
||||
struct amba_pl011_data *plat = uap->port.dev->platform_data;
|
||||
struct amba_pl011_data *plat = dev_get_platdata(uap->port.dev);
|
||||
struct dma_slave_config tx_conf = {
|
||||
.dst_addr = uap->port.mapbase + UART01x_DR,
|
||||
.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
|
||||
|
@ -677,6 +677,8 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap)
|
|||
* Locking: called with port lock held and IRQs disabled.
|
||||
*/
|
||||
static void pl011_dma_flush_buffer(struct uart_port *port)
|
||||
__releases(&uap->port.lock)
|
||||
__acquires(&uap->port.lock)
|
||||
{
|
||||
struct uart_amba_port *uap = (struct uart_amba_port *)port;
|
||||
|
||||
|
@ -1198,6 +1200,8 @@ static void pl011_enable_ms(struct uart_port *port)
|
|||
}
|
||||
|
||||
static void pl011_rx_chars(struct uart_amba_port *uap)
|
||||
__releases(&uap->port.lock)
|
||||
__acquires(&uap->port.lock)
|
||||
{
|
||||
pl011_fifo_to_tty(uap);
|
||||
|
||||
|
@ -1497,10 +1501,10 @@ static int pl011_hwinit(struct uart_port *port)
|
|||
uap->im = readw(uap->port.membase + UART011_IMSC);
|
||||
writew(UART011_RTIM | UART011_RXIM, uap->port.membase + UART011_IMSC);
|
||||
|
||||
if (uap->port.dev->platform_data) {
|
||||
if (dev_get_platdata(uap->port.dev)) {
|
||||
struct amba_pl011_data *plat;
|
||||
|
||||
plat = uap->port.dev->platform_data;
|
||||
plat = dev_get_platdata(uap->port.dev);
|
||||
if (plat->init)
|
||||
plat->init();
|
||||
}
|
||||
|
@ -1645,10 +1649,10 @@ static void pl011_shutdown(struct uart_port *port)
|
|||
/* Optionally let pins go into sleep states */
|
||||
pinctrl_pm_select_sleep_state(port->dev);
|
||||
|
||||
if (uap->port.dev->platform_data) {
|
||||
if (dev_get_platdata(uap->port.dev)) {
|
||||
struct amba_pl011_data *plat;
|
||||
|
||||
plat = uap->port.dev->platform_data;
|
||||
plat = dev_get_platdata(uap->port.dev);
|
||||
if (plat->exit)
|
||||
plat->exit();
|
||||
}
|
||||
|
@ -2002,10 +2006,10 @@ static int __init pl011_console_setup(struct console *co, char *options)
|
|||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (uap->port.dev->platform_data) {
|
||||
if (dev_get_platdata(uap->port.dev)) {
|
||||
struct amba_pl011_data *plat;
|
||||
|
||||
plat = uap->port.dev->platform_data;
|
||||
plat = dev_get_platdata(uap->port.dev);
|
||||
if (plat->init)
|
||||
plat->init();
|
||||
}
|
||||
|
|
|
@ -125,7 +125,9 @@ static void apbuart_rx_chars(struct uart_port *port)
|
|||
status = UART_GET_STATUS(port);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(&port->state->port);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
static void apbuart_tx_chars(struct uart_port *port)
|
||||
|
|
|
@ -17,6 +17,8 @@
|
|||
#include <linux/sysrq.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/tty.h>
|
||||
#include <linux/tty_flip.h>
|
||||
#include <linux/serial_core.h>
|
||||
|
@ -24,11 +26,11 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#include <asm/div64.h>
|
||||
|
||||
#include <asm/mach-ath79/ar933x_uart.h>
|
||||
#include <asm/mach-ath79/ar933x_uart_platform.h>
|
||||
|
||||
#define DRIVER_NAME "ar933x-uart"
|
||||
|
||||
|
@ -47,8 +49,14 @@ struct ar933x_uart_port {
|
|||
unsigned int ier; /* shadow Interrupt Enable Register */
|
||||
unsigned int min_baud;
|
||||
unsigned int max_baud;
|
||||
struct clk *clk;
|
||||
};
|
||||
|
||||
static inline bool ar933x_uart_console_enabled(void)
|
||||
{
|
||||
return config_enabled(CONFIG_SERIAL_AR933X_CONSOLE);
|
||||
}
|
||||
|
||||
static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up,
|
||||
int offset)
|
||||
{
|
||||
|
@ -322,7 +330,9 @@ static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
|
|||
tty_insert_flip_char(port, ch, TTY_NORMAL);
|
||||
} while (max_count-- > 0);
|
||||
|
||||
spin_unlock(&up->port.lock);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock(&up->port.lock);
|
||||
}
|
||||
|
||||
static void ar933x_uart_tx_chars(struct ar933x_uart_port *up)
|
||||
|
@ -497,8 +507,6 @@ static struct uart_ops ar933x_uart_ops = {
|
|||
.verify_port = ar933x_uart_verify_port,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_SERIAL_AR933X_CONSOLE
|
||||
|
||||
static struct ar933x_uart_port *
|
||||
ar933x_console_ports[CONFIG_SERIAL_AR933X_NR_UARTS];
|
||||
|
||||
|
@ -597,80 +605,88 @@ static struct console ar933x_uart_console = {
|
|||
|
||||
static void ar933x_uart_add_console_port(struct ar933x_uart_port *up)
|
||||
{
|
||||
if (!ar933x_uart_console_enabled())
|
||||
return;
|
||||
|
||||
ar933x_console_ports[up->port.line] = up;
|
||||
}
|
||||
|
||||
#define AR933X_SERIAL_CONSOLE (&ar933x_uart_console)
|
||||
|
||||
#else
|
||||
|
||||
static inline void ar933x_uart_add_console_port(struct ar933x_uart_port *up) {}
|
||||
|
||||
#define AR933X_SERIAL_CONSOLE NULL
|
||||
|
||||
#endif /* CONFIG_SERIAL_AR933X_CONSOLE */
|
||||
|
||||
static struct uart_driver ar933x_uart_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.driver_name = DRIVER_NAME,
|
||||
.dev_name = "ttyATH",
|
||||
.nr = CONFIG_SERIAL_AR933X_NR_UARTS,
|
||||
.cons = AR933X_SERIAL_CONSOLE,
|
||||
.cons = NULL, /* filled in runtime */
|
||||
};
|
||||
|
||||
static int ar933x_uart_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct ar933x_uart_platform_data *pdata;
|
||||
struct ar933x_uart_port *up;
|
||||
struct uart_port *port;
|
||||
struct resource *mem_res;
|
||||
struct resource *irq_res;
|
||||
struct device_node *np;
|
||||
unsigned int baud;
|
||||
int id;
|
||||
int ret;
|
||||
|
||||
pdata = pdev->dev.platform_data;
|
||||
if (!pdata)
|
||||
return -EINVAL;
|
||||
|
||||
id = pdev->id;
|
||||
if (id == -1)
|
||||
id = 0;
|
||||
np = pdev->dev.of_node;
|
||||
if (config_enabled(CONFIG_OF) && np) {
|
||||
id = of_alias_get_id(np, "serial");
|
||||
if (id < 0) {
|
||||
dev_err(&pdev->dev, "unable to get alias id, err=%d\n",
|
||||
id);
|
||||
return id;
|
||||
}
|
||||
} else {
|
||||
id = pdev->id;
|
||||
if (id == -1)
|
||||
id = 0;
|
||||
}
|
||||
|
||||
if (id > CONFIG_SERIAL_AR933X_NR_UARTS)
|
||||
return -EINVAL;
|
||||
|
||||
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!mem_res) {
|
||||
dev_err(&pdev->dev, "no MEM resource\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
||||
if (!irq_res) {
|
||||
dev_err(&pdev->dev, "no IRQ resource\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
up = kzalloc(sizeof(struct ar933x_uart_port), GFP_KERNEL);
|
||||
up = devm_kzalloc(&pdev->dev, sizeof(struct ar933x_uart_port),
|
||||
GFP_KERNEL);
|
||||
if (!up)
|
||||
return -ENOMEM;
|
||||
|
||||
port = &up->port;
|
||||
port->mapbase = mem_res->start;
|
||||
|
||||
port->membase = ioremap(mem_res->start, AR933X_UART_REGS_SIZE);
|
||||
if (!port->membase) {
|
||||
ret = -ENOMEM;
|
||||
goto err_free_up;
|
||||
up->clk = devm_clk_get(&pdev->dev, "uart");
|
||||
if (IS_ERR(up->clk)) {
|
||||
dev_err(&pdev->dev, "unable to get UART clock\n");
|
||||
return PTR_ERR(up->clk);
|
||||
}
|
||||
|
||||
port = &up->port;
|
||||
|
||||
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
port->membase = devm_ioremap_resource(&pdev->dev, mem_res);
|
||||
if (IS_ERR(port->membase))
|
||||
return PTR_ERR(port->membase);
|
||||
|
||||
ret = clk_prepare_enable(up->clk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
port->uartclk = clk_get_rate(up->clk);
|
||||
if (!port->uartclk) {
|
||||
ret = -EINVAL;
|
||||
goto err_disable_clk;
|
||||
}
|
||||
|
||||
port->mapbase = mem_res->start;
|
||||
port->line = id;
|
||||
port->irq = irq_res->start;
|
||||
port->dev = &pdev->dev;
|
||||
port->type = PORT_AR933X;
|
||||
port->iotype = UPIO_MEM32;
|
||||
port->uartclk = pdata->uartclk;
|
||||
|
||||
port->regshift = 2;
|
||||
port->fifosize = AR933X_UART_FIFO_SIZE;
|
||||
|
@ -686,15 +702,13 @@ static int ar933x_uart_probe(struct platform_device *pdev)
|
|||
|
||||
ret = uart_add_one_port(&ar933x_uart_driver, &up->port);
|
||||
if (ret)
|
||||
goto err_unmap;
|
||||
goto err_disable_clk;
|
||||
|
||||
platform_set_drvdata(pdev, up);
|
||||
return 0;
|
||||
|
||||
err_unmap:
|
||||
iounmap(up->port.membase);
|
||||
err_free_up:
|
||||
kfree(up);
|
||||
err_disable_clk:
|
||||
clk_disable_unprepare(up->clk);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -703,23 +717,30 @@ static int ar933x_uart_remove(struct platform_device *pdev)
|
|||
struct ar933x_uart_port *up;
|
||||
|
||||
up = platform_get_drvdata(pdev);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
if (up) {
|
||||
uart_remove_one_port(&ar933x_uart_driver, &up->port);
|
||||
iounmap(up->port.membase);
|
||||
kfree(up);
|
||||
clk_disable_unprepare(up->clk);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static const struct of_device_id ar933x_uart_of_ids[] = {
|
||||
{ .compatible = "qca,ar9330-uart" },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, ar933x_uart_of_ids);
|
||||
#endif
|
||||
|
||||
static struct platform_driver ar933x_uart_platform_driver = {
|
||||
.probe = ar933x_uart_probe,
|
||||
.remove = ar933x_uart_remove,
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
.of_match_table = of_match_ptr(ar933x_uart_of_ids),
|
||||
},
|
||||
};
|
||||
|
||||
|
@ -727,7 +748,9 @@ static int __init ar933x_uart_init(void)
|
|||
{
|
||||
int ret;
|
||||
|
||||
ar933x_uart_driver.nr = CONFIG_SERIAL_AR933X_NR_UARTS;
|
||||
if (ar933x_uart_console_enabled())
|
||||
ar933x_uart_driver.cons = &ar933x_uart_console;
|
||||
|
||||
ret = uart_register_driver(&ar933x_uart_driver);
|
||||
if (ret)
|
||||
goto err_out;
|
||||
|
|
|
@ -209,9 +209,9 @@ static void arc_serial_start_tx(struct uart_port *port)
|
|||
arc_serial_tx_chars(uart);
|
||||
}
|
||||
|
||||
static void arc_serial_rx_chars(struct arc_uart_port *uart)
|
||||
static void arc_serial_rx_chars(struct arc_uart_port *uart, unsigned int status)
|
||||
{
|
||||
unsigned int status, ch, flg = 0;
|
||||
unsigned int ch, flg = 0;
|
||||
|
||||
/*
|
||||
* UART has 4 deep RX-FIFO. Driver's recongnition of this fact
|
||||
|
@ -222,11 +222,11 @@ static void arc_serial_rx_chars(struct arc_uart_port *uart)
|
|||
* before RX-EMPTY=0, implies some sort of buffering going on in the
|
||||
* controller, which is indeed the Rx-FIFO.
|
||||
*/
|
||||
while (!((status = UART_GET_STATUS(uart)) & RXEMPTY)) {
|
||||
|
||||
ch = UART_GET_DATA(uart);
|
||||
uart->port.icount.rx++;
|
||||
|
||||
do {
|
||||
/*
|
||||
* This could be an Rx Intr for err (no data),
|
||||
* so check err and clear that Intr first
|
||||
*/
|
||||
if (unlikely(status & (RXOERR | RXFERR))) {
|
||||
if (status & RXOERR) {
|
||||
uart->port.icount.overrun++;
|
||||
|
@ -242,14 +242,19 @@ static void arc_serial_rx_chars(struct arc_uart_port *uart)
|
|||
} else
|
||||
flg = TTY_NORMAL;
|
||||
|
||||
if (unlikely(uart_handle_sysrq_char(&uart->port, ch)))
|
||||
goto done;
|
||||
if (status & RXEMPTY)
|
||||
continue;
|
||||
|
||||
uart_insert_char(&uart->port, status, RXOERR, ch, flg);
|
||||
ch = UART_GET_DATA(uart);
|
||||
uart->port.icount.rx++;
|
||||
|
||||
done:
|
||||
if (!(uart_handle_sysrq_char(&uart->port, ch)))
|
||||
uart_insert_char(&uart->port, status, RXOERR, ch, flg);
|
||||
|
||||
spin_unlock(&uart->port.lock);
|
||||
tty_flip_buffer_push(&uart->port.state->port);
|
||||
}
|
||||
spin_lock(&uart->port.lock);
|
||||
} while (!((status = UART_GET_STATUS(uart)) & RXEMPTY));
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -292,11 +297,11 @@ static irqreturn_t arc_serial_isr(int irq, void *dev_id)
|
|||
* notifications from the UART Controller.
|
||||
* To demultiplex between the two, we check the relevant bits
|
||||
*/
|
||||
if ((status & RXIENB) && !(status & RXEMPTY)) {
|
||||
if (status & RXIENB) {
|
||||
|
||||
/* already in ISR, no need of xx_irqsave */
|
||||
spin_lock(&uart->port.lock);
|
||||
arc_serial_rx_chars(uart);
|
||||
arc_serial_rx_chars(uart, status);
|
||||
spin_unlock(&uart->port.lock);
|
||||
}
|
||||
|
||||
|
@ -528,7 +533,7 @@ arc_uart_init_one(struct platform_device *pdev, int dev_id)
|
|||
unsigned long *plat_data;
|
||||
struct arc_uart_port *uart = &arc_uart_ports[dev_id];
|
||||
|
||||
plat_data = ((unsigned long *)(pdev->dev.platform_data));
|
||||
plat_data = (unsigned long *)dev_get_platdata(&pdev->dev);
|
||||
if (!plat_data)
|
||||
return -ENODEV;
|
||||
|
||||
|
|
File diff suppressed because it is too large
Load Diff
|
@ -302,7 +302,9 @@ static void bcm_uart_do_rx(struct uart_port *port)
|
|||
|
||||
} while (--max_count);
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(tty_port);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -852,7 +854,6 @@ static int bcm_uart_remove(struct platform_device *pdev)
|
|||
|
||||
port = platform_get_drvdata(pdev);
|
||||
uart_remove_one_port(&bcm_uart_driver, port);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
/* mark port as free */
|
||||
ports[pdev->id].membase = 0;
|
||||
return 0;
|
||||
|
|
|
@ -161,11 +161,12 @@ static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id)
|
|||
if (!uart_handle_sysrq_char(&up->port, ch))
|
||||
tty_insert_flip_char(port, ch, TTY_NORMAL);
|
||||
}
|
||||
/* XXX this won't deadlock with lowlat? */
|
||||
tty_flip_buffer_push(port);
|
||||
|
||||
spin_unlock(&up->port.lock);
|
||||
|
||||
/* XXX this won't deadlock with lowlat? */
|
||||
tty_flip_buffer_push(port);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
|
@ -766,7 +767,8 @@ static int sport_uart_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
ret = peripheral_request_list(
|
||||
(unsigned short *)pdev->dev.platform_data, DRV_NAME);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev),
|
||||
DRV_NAME);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"Fail to request SPORT peripherals\n");
|
||||
|
@ -843,7 +845,7 @@ out_error_unmap:
|
|||
iounmap(sport->port.membase);
|
||||
out_error_free_peripherals:
|
||||
peripheral_free_list(
|
||||
(unsigned short *)pdev->dev.platform_data);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev));
|
||||
out_error_free_mem:
|
||||
kfree(sport);
|
||||
bfin_sport_uart_ports[pdev->id] = NULL;
|
||||
|
@ -863,7 +865,7 @@ static int sport_uart_remove(struct platform_device *pdev)
|
|||
uart_remove_one_port(&sport_uart_reg, &sport->port);
|
||||
iounmap(sport->port.membase);
|
||||
peripheral_free_list(
|
||||
(unsigned short *)pdev->dev.platform_data);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev));
|
||||
kfree(sport);
|
||||
bfin_sport_uart_ports[pdev->id] = NULL;
|
||||
}
|
||||
|
@ -883,7 +885,7 @@ static struct platform_driver sport_uart_driver = {
|
|||
};
|
||||
|
||||
#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
|
||||
static __initdata struct early_platform_driver early_sport_uart_driver = {
|
||||
static struct early_platform_driver early_sport_uart_driver __initdata = {
|
||||
.class_str = CLASS_BFIN_SPORT_CONSOLE,
|
||||
.pdrv = &sport_uart_driver,
|
||||
.requested_id = EARLY_PLATFORM_ID_UNSET,
|
||||
|
|
|
@ -41,10 +41,6 @@
|
|||
# undef CONFIG_EARLY_PRINTK
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SERIAL_BFIN_MODULE
|
||||
# undef CONFIG_EARLY_PRINTK
|
||||
#endif
|
||||
|
||||
/* UART name and device definitions */
|
||||
#define BFIN_SERIAL_DEV_NAME "ttyBF"
|
||||
#define BFIN_SERIAL_MAJOR 204
|
||||
|
@ -1180,7 +1176,7 @@ bfin_earlyprintk_console_write(struct console *co, const char *s, unsigned int c
|
|||
* don't let the common infrastructure play with things. (see calls to setup
|
||||
* & earlysetup in ./kernel/printk.c:register_console()
|
||||
*/
|
||||
static struct __initdata console bfin_early_serial_console = {
|
||||
static struct console bfin_early_serial_console __initdata = {
|
||||
.name = "early_BFuart",
|
||||
.write = bfin_earlyprintk_console_write,
|
||||
.device = uart_console_device,
|
||||
|
@ -1244,7 +1240,8 @@ static int bfin_serial_probe(struct platform_device *pdev)
|
|||
*/
|
||||
#endif
|
||||
ret = peripheral_request_list(
|
||||
(unsigned short *)pdev->dev.platform_data, DRIVER_NAME);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev),
|
||||
DRIVER_NAME);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"fail to request bfin serial peripherals\n");
|
||||
|
@ -1362,7 +1359,7 @@ out_error_unmap:
|
|||
iounmap(uart->port.membase);
|
||||
out_error_free_peripherals:
|
||||
peripheral_free_list(
|
||||
(unsigned short *)pdev->dev.platform_data);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev));
|
||||
out_error_free_mem:
|
||||
kfree(uart);
|
||||
bfin_serial_ports[pdev->id] = NULL;
|
||||
|
@ -1381,7 +1378,7 @@ static int bfin_serial_remove(struct platform_device *pdev)
|
|||
uart_remove_one_port(&bfin_serial_reg, &uart->port);
|
||||
iounmap(uart->port.membase);
|
||||
peripheral_free_list(
|
||||
(unsigned short *)pdev->dev.platform_data);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev));
|
||||
kfree(uart);
|
||||
bfin_serial_ports[pdev->id] = NULL;
|
||||
}
|
||||
|
@ -1401,7 +1398,7 @@ static struct platform_driver bfin_serial_driver = {
|
|||
};
|
||||
|
||||
#if defined(CONFIG_SERIAL_BFIN_CONSOLE)
|
||||
static __initdata struct early_platform_driver early_bfin_serial_driver = {
|
||||
static struct early_platform_driver early_bfin_serial_driver __initdata = {
|
||||
.class_str = CLASS_BFIN_CONSOLE,
|
||||
.pdrv = &bfin_serial_driver,
|
||||
.requested_id = EARLY_PLATFORM_ID_UNSET,
|
||||
|
@ -1436,7 +1433,7 @@ static int bfin_earlyprintk_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
ret = peripheral_request_list(
|
||||
(unsigned short *)pdev->dev.platform_data, DRIVER_NAME);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev), DRIVER_NAME);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"fail to request bfin serial peripherals\n");
|
||||
|
@ -1467,7 +1464,7 @@ static int bfin_earlyprintk_probe(struct platform_device *pdev)
|
|||
|
||||
out_error_free_peripherals:
|
||||
peripheral_free_list(
|
||||
(unsigned short *)pdev->dev.platform_data);
|
||||
(unsigned short *)dev_get_platdata(&pdev->dev));
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
@ -1480,7 +1477,7 @@ static struct platform_driver bfin_earlyprintk_driver = {
|
|||
},
|
||||
};
|
||||
|
||||
static __initdata struct early_platform_driver early_bfin_earlyprintk_driver = {
|
||||
static struct early_platform_driver early_bfin_earlyprintk_driver __initdata = {
|
||||
.class_str = CLASS_BFIN_EARLYPRINTK,
|
||||
.pdrv = &bfin_earlyprintk_driver,
|
||||
.requested_id = EARLY_PLATFORM_ID_UNSET,
|
||||
|
|
|
@ -438,8 +438,7 @@ static int uart_clps711x_probe(struct platform_device *pdev)
|
|||
s->uart_clk = devm_clk_get(&pdev->dev, "uart");
|
||||
if (IS_ERR(s->uart_clk)) {
|
||||
dev_err(&pdev->dev, "Can't get UART clocks\n");
|
||||
ret = PTR_ERR(s->uart_clk);
|
||||
goto err_out;
|
||||
return PTR_ERR(s->uart_clk);
|
||||
}
|
||||
|
||||
s->uart.owner = THIS_MODULE;
|
||||
|
@ -461,7 +460,7 @@ static int uart_clps711x_probe(struct platform_device *pdev)
|
|||
if (ret) {
|
||||
dev_err(&pdev->dev, "Registering UART driver failed\n");
|
||||
devm_clk_put(&pdev->dev, s->uart_clk);
|
||||
goto err_out;
|
||||
return ret;
|
||||
}
|
||||
|
||||
for (i = 0; i < UART_CLPS711X_NR; i++) {
|
||||
|
@ -478,11 +477,6 @@ static int uart_clps711x_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_out:
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int uart_clps711x_remove(struct platform_device *pdev)
|
||||
|
@ -495,7 +489,6 @@ static int uart_clps711x_remove(struct platform_device *pdev)
|
|||
|
||||
devm_clk_put(&pdev->dev, s->uart_clk);
|
||||
uart_unregister_driver(&s->uart);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
@ -1213,8 +1213,32 @@ static int cpm_uart_init_port(struct device_node *np,
|
|||
goto out_pram;
|
||||
}
|
||||
|
||||
for (i = 0; i < NUM_GPIOS; i++)
|
||||
pinfo->gpios[i] = of_get_gpio(np, i);
|
||||
for (i = 0; i < NUM_GPIOS; i++) {
|
||||
int gpio;
|
||||
|
||||
pinfo->gpios[i] = -1;
|
||||
|
||||
gpio = of_get_gpio(np, i);
|
||||
|
||||
if (gpio_is_valid(gpio)) {
|
||||
ret = gpio_request(gpio, "cpm_uart");
|
||||
if (ret) {
|
||||
pr_err("can't request gpio #%d: %d\n", i, ret);
|
||||
continue;
|
||||
}
|
||||
if (i == GPIO_RTS || i == GPIO_DTR)
|
||||
ret = gpio_direction_output(gpio, 0);
|
||||
else
|
||||
ret = gpio_direction_input(gpio);
|
||||
if (ret) {
|
||||
pr_err("can't set direction for gpio #%d: %d\n",
|
||||
i, ret);
|
||||
gpio_free(gpio);
|
||||
continue;
|
||||
}
|
||||
pinfo->gpios[i] = gpio;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PPC_EARLY_DEBUG_CPM
|
||||
udbg_putc = NULL;
|
||||
|
|
|
@ -268,10 +268,10 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data)
|
|||
handled = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
tty_flip_buffer_push(tport);
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
|
||||
tty_flip_buffer_push(tport);
|
||||
|
||||
return handled;
|
||||
}
|
||||
|
||||
|
@ -698,6 +698,7 @@ static int efm32_uart_probe(struct platform_device *pdev)
|
|||
{
|
||||
struct efm32_uart_port *efm_port;
|
||||
struct resource *res;
|
||||
unsigned int line;
|
||||
int ret;
|
||||
|
||||
efm_port = kzalloc(sizeof(*efm_port), GFP_KERNEL);
|
||||
|
@ -750,18 +751,21 @@ static int efm32_uart_probe(struct platform_device *pdev)
|
|||
|
||||
if (pdata)
|
||||
efm_port->pdata = *pdata;
|
||||
}
|
||||
} else if (ret < 0)
|
||||
goto err_probe_dt;
|
||||
|
||||
if (efm_port->port.line >= 0 &&
|
||||
efm_port->port.line < ARRAY_SIZE(efm32_uart_ports))
|
||||
efm32_uart_ports[efm_port->port.line] = efm_port;
|
||||
line = efm_port->port.line;
|
||||
|
||||
if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
|
||||
efm32_uart_ports[line] = efm_port;
|
||||
|
||||
ret = uart_add_one_port(&efm32_uart_reg, &efm_port->port);
|
||||
if (ret) {
|
||||
dev_dbg(&pdev->dev, "failed to add port: %d\n", ret);
|
||||
|
||||
if (pdev->id >= 0 && pdev->id < ARRAY_SIZE(efm32_uart_ports))
|
||||
efm32_uart_ports[pdev->id] = NULL;
|
||||
if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
|
||||
efm32_uart_ports[line] = NULL;
|
||||
err_probe_dt:
|
||||
err_get_rxirq:
|
||||
err_too_small:
|
||||
err_get_base:
|
||||
|
@ -777,20 +781,19 @@ err_get_base:
|
|||
static int efm32_uart_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct efm32_uart_port *efm_port = platform_get_drvdata(pdev);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
unsigned int line = efm_port->port.line;
|
||||
|
||||
uart_remove_one_port(&efm32_uart_reg, &efm_port->port);
|
||||
|
||||
if (pdev->id >= 0 && pdev->id < ARRAY_SIZE(efm32_uart_ports))
|
||||
efm32_uart_ports[pdev->id] = NULL;
|
||||
if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
|
||||
efm32_uart_ports[line] = NULL;
|
||||
|
||||
kfree(efm_port);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct of_device_id efm32_uart_dt_ids[] = {
|
||||
static const struct of_device_id efm32_uart_dt_ids[] = {
|
||||
{
|
||||
.compatible = "efm32,uart",
|
||||
}, {
|
||||
|
|
|
@ -342,8 +342,10 @@ static void lpuart_break_ctl(struct uart_port *port, int break_state)
|
|||
static void lpuart_setup_watermark(struct lpuart_port *sport)
|
||||
{
|
||||
unsigned char val, cr2;
|
||||
unsigned char cr2_saved;
|
||||
|
||||
cr2 = readb(sport->port.membase + UARTCR2);
|
||||
cr2_saved = cr2;
|
||||
cr2 &= ~(UARTCR2_TIE | UARTCR2_TCIE | UARTCR2_TE |
|
||||
UARTCR2_RIE | UARTCR2_RE);
|
||||
writeb(cr2, sport->port.membase + UARTCR2);
|
||||
|
@ -366,6 +368,9 @@ static void lpuart_setup_watermark(struct lpuart_port *sport)
|
|||
|
||||
writeb(2, sport->port.membase + UARTTWFIFO);
|
||||
writeb(1, sport->port.membase + UARTRWFIFO);
|
||||
|
||||
/* Restore cr2 */
|
||||
writeb(cr2_saved, sport->port.membase + UARTCR2);
|
||||
}
|
||||
|
||||
static int lpuart_startup(struct uart_port *port)
|
||||
|
@ -858,7 +863,7 @@ static int __init lpuart_serial_init(void)
|
|||
if (ret)
|
||||
uart_unregister_driver(&lpuart_reg);
|
||||
|
||||
return 0;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit lpuart_serial_exit(void)
|
||||
|
|
|
@ -105,7 +105,7 @@ static const struct pci_device_id icom_pci_table[] = {
|
|||
{}
|
||||
};
|
||||
|
||||
struct lookup_proc_table start_proc[4] = {
|
||||
static struct lookup_proc_table start_proc[4] = {
|
||||
{NULL, ICOM_CONTROL_START_A},
|
||||
{NULL, ICOM_CONTROL_START_B},
|
||||
{NULL, ICOM_CONTROL_START_C},
|
||||
|
@ -113,14 +113,14 @@ struct lookup_proc_table start_proc[4] = {
|
|||
};
|
||||
|
||||
|
||||
struct lookup_proc_table stop_proc[4] = {
|
||||
static struct lookup_proc_table stop_proc[4] = {
|
||||
{NULL, ICOM_CONTROL_STOP_A},
|
||||
{NULL, ICOM_CONTROL_STOP_B},
|
||||
{NULL, ICOM_CONTROL_STOP_C},
|
||||
{NULL, ICOM_CONTROL_STOP_D}
|
||||
};
|
||||
|
||||
struct lookup_int_table int_mask_tbl[4] = {
|
||||
static struct lookup_int_table int_mask_tbl[4] = {
|
||||
{NULL, ICOM_INT_MASK_PRC_A},
|
||||
{NULL, ICOM_INT_MASK_PRC_B},
|
||||
{NULL, ICOM_INT_MASK_PRC_C},
|
||||
|
@ -297,25 +297,25 @@ static void stop_processor(struct icom_port *icom_port)
|
|||
spin_lock_irqsave(&icom_lock, flags);
|
||||
|
||||
port = icom_port->port;
|
||||
if (port >= ARRAY_SIZE(stop_proc)) {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
goto unlock;
|
||||
}
|
||||
|
||||
if (port == 0 || port == 1)
|
||||
stop_proc[port].global_control_reg = &icom_port->global_reg->control;
|
||||
else
|
||||
stop_proc[port].global_control_reg = &icom_port->global_reg->control_2;
|
||||
|
||||
temp = readl(stop_proc[port].global_control_reg);
|
||||
temp = (temp & ~start_proc[port].processor_id) | stop_proc[port].processor_id;
|
||||
writel(temp, stop_proc[port].global_control_reg);
|
||||
|
||||
if (port < 4) {
|
||||
temp = readl(stop_proc[port].global_control_reg);
|
||||
temp =
|
||||
(temp & ~start_proc[port].processor_id) | stop_proc[port].processor_id;
|
||||
writel(temp, stop_proc[port].global_control_reg);
|
||||
|
||||
/* write flush */
|
||||
readl(stop_proc[port].global_control_reg);
|
||||
} else {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
}
|
||||
/* write flush */
|
||||
readl(stop_proc[port].global_control_reg);
|
||||
|
||||
unlock:
|
||||
spin_unlock_irqrestore(&icom_lock, flags);
|
||||
}
|
||||
|
||||
|
@ -328,23 +328,25 @@ static void start_processor(struct icom_port *icom_port)
|
|||
spin_lock_irqsave(&icom_lock, flags);
|
||||
|
||||
port = icom_port->port;
|
||||
if (port >= ARRAY_SIZE(start_proc)) {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
goto unlock;
|
||||
}
|
||||
|
||||
if (port == 0 || port == 1)
|
||||
start_proc[port].global_control_reg = &icom_port->global_reg->control;
|
||||
else
|
||||
start_proc[port].global_control_reg = &icom_port->global_reg->control_2;
|
||||
if (port < 4) {
|
||||
temp = readl(start_proc[port].global_control_reg);
|
||||
temp =
|
||||
(temp & ~stop_proc[port].processor_id) | start_proc[port].processor_id;
|
||||
writel(temp, start_proc[port].global_control_reg);
|
||||
|
||||
/* write flush */
|
||||
readl(start_proc[port].global_control_reg);
|
||||
} else {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
}
|
||||
temp = readl(start_proc[port].global_control_reg);
|
||||
temp = (temp & ~stop_proc[port].processor_id) | start_proc[port].processor_id;
|
||||
writel(temp, start_proc[port].global_control_reg);
|
||||
|
||||
/* write flush */
|
||||
readl(start_proc[port].global_control_reg);
|
||||
|
||||
unlock:
|
||||
spin_unlock_irqrestore(&icom_lock, flags);
|
||||
}
|
||||
|
||||
|
@ -557,6 +559,12 @@ static int startup(struct icom_port *icom_port)
|
|||
*/
|
||||
spin_lock_irqsave(&icom_lock, flags);
|
||||
port = icom_port->port;
|
||||
if (port >= ARRAY_SIZE(int_mask_tbl)) {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
goto unlock;
|
||||
}
|
||||
|
||||
if (port == 0 || port == 1)
|
||||
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
|
||||
else
|
||||
|
@ -566,17 +574,14 @@ static int startup(struct icom_port *icom_port)
|
|||
writew(0x00FF, icom_port->int_reg);
|
||||
else
|
||||
writew(0x3F00, icom_port->int_reg);
|
||||
if (port < 4) {
|
||||
temp = readl(int_mask_tbl[port].global_int_mask);
|
||||
writel(temp & ~int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
|
||||
|
||||
/* write flush */
|
||||
readl(int_mask_tbl[port].global_int_mask);
|
||||
} else {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
}
|
||||
temp = readl(int_mask_tbl[port].global_int_mask);
|
||||
writel(temp & ~int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
|
||||
|
||||
/* write flush */
|
||||
readl(int_mask_tbl[port].global_int_mask);
|
||||
|
||||
unlock:
|
||||
spin_unlock_irqrestore(&icom_lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
@ -595,21 +600,23 @@ static void shutdown(struct icom_port *icom_port)
|
|||
* disable all interrupts
|
||||
*/
|
||||
port = icom_port->port;
|
||||
if (port >= ARRAY_SIZE(int_mask_tbl)) {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
goto unlock;
|
||||
}
|
||||
if (port == 0 || port == 1)
|
||||
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
|
||||
else
|
||||
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
|
||||
|
||||
if (port < 4) {
|
||||
temp = readl(int_mask_tbl[port].global_int_mask);
|
||||
writel(temp | int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
|
||||
temp = readl(int_mask_tbl[port].global_int_mask);
|
||||
writel(temp | int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
|
||||
|
||||
/* write flush */
|
||||
readl(int_mask_tbl[port].global_int_mask);
|
||||
} else {
|
||||
dev_err(&icom_port->adapter->pci_dev->dev,
|
||||
"Invalid port assignment\n");
|
||||
}
|
||||
/* write flush */
|
||||
readl(int_mask_tbl[port].global_int_mask);
|
||||
|
||||
unlock:
|
||||
spin_unlock_irqrestore(&icom_lock, flags);
|
||||
|
||||
/*
|
||||
|
@ -834,7 +841,10 @@ ignore_char:
|
|||
status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
|
||||
}
|
||||
icom_port->next_rcv = rcv_buff;
|
||||
|
||||
spin_unlock(&icom_port->uart_port.lock);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock(&icom_port->uart_port.lock);
|
||||
}
|
||||
|
||||
static void process_interrupt(u16 port_int_reg,
|
||||
|
@ -1087,8 +1097,7 @@ static void icom_close(struct uart_port *port)
|
|||
|
||||
/* stop receiver */
|
||||
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
||||
writeb(cmdReg & (unsigned char) ~CMD_RCV_ENABLE,
|
||||
&ICOM_PORT->dram->CmdReg);
|
||||
writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
|
||||
|
||||
shutdown(ICOM_PORT);
|
||||
|
||||
|
@ -1567,7 +1576,7 @@ static int icom_probe(struct pci_dev *dev,
|
|||
icom_port->uart_port.type = PORT_ICOM;
|
||||
icom_port->uart_port.iotype = UPIO_MEM;
|
||||
icom_port->uart_port.membase =
|
||||
(char *) icom_adapter->base_addr_pci;
|
||||
(unsigned char __iomem *)icom_adapter->base_addr_pci;
|
||||
icom_port->uart_port.fifosize = 16;
|
||||
icom_port->uart_port.ops = &icom_ops;
|
||||
icom_port->uart_port.line =
|
||||
|
|
|
@ -1008,7 +1008,7 @@ static int ifx_spi_spi_probe(struct spi_device *spi)
|
|||
return -ENODEV;
|
||||
}
|
||||
|
||||
pl_data = (struct ifx_modem_platform_data *)spi->dev.platform_data;
|
||||
pl_data = (struct ifx_modem_platform_data *)dev_get_platdata(&spi->dev);
|
||||
if (!pl_data) {
|
||||
dev_err(&spi->dev, "missing platform data!");
|
||||
return -ENODEV;
|
||||
|
|
|
@ -47,11 +47,12 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
|
||||
#include <asm/irq.h>
|
||||
#include <linux/platform_data/serial-imx.h>
|
||||
#include <linux/platform_data/dma-imx.h>
|
||||
|
||||
/* Register definitions */
|
||||
#define URXD0 0x0 /* Receiver Register */
|
||||
|
@ -83,6 +84,7 @@
|
|||
#define UCR1_ADBR (1<<14) /* Auto detect baud rate */
|
||||
#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */
|
||||
#define UCR1_IDEN (1<<12) /* Idle condition interrupt */
|
||||
#define UCR1_ICD_REG(x) (((x) & 3) << 10) /* idle condition detect */
|
||||
#define UCR1_RRDYEN (1<<9) /* Recv ready interrupt enable */
|
||||
#define UCR1_RDMAEN (1<<8) /* Recv ready DMA enable */
|
||||
#define UCR1_IREN (1<<7) /* Infrared interface enable */
|
||||
|
@ -91,6 +93,7 @@
|
|||
#define UCR1_SNDBRK (1<<4) /* Send break */
|
||||
#define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */
|
||||
#define IMX1_UCR1_UARTCLKEN (1<<2) /* UART clock enabled, i.mx1 only */
|
||||
#define UCR1_ATDMAEN (1<<2) /* Aging DMA Timer Enable */
|
||||
#define UCR1_DOZE (1<<1) /* Doze */
|
||||
#define UCR1_UARTEN (1<<0) /* UART enabled */
|
||||
#define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */
|
||||
|
@ -126,6 +129,7 @@
|
|||
#define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */
|
||||
#define UCR4_WKEN (1<<7) /* Wake interrupt enable */
|
||||
#define UCR4_REF16 (1<<6) /* Ref freq 16 MHz */
|
||||
#define UCR4_IDDMAEN (1<<6) /* DMA IDLE Condition Detected */
|
||||
#define UCR4_IRSC (1<<5) /* IR special case */
|
||||
#define UCR4_TCEN (1<<3) /* Transmit complete interrupt enable */
|
||||
#define UCR4_BKEN (1<<2) /* Break condition interrupt enable */
|
||||
|
@ -187,6 +191,7 @@
|
|||
enum imx_uart_type {
|
||||
IMX1_UART,
|
||||
IMX21_UART,
|
||||
IMX6Q_UART,
|
||||
};
|
||||
|
||||
/* device type dependent stuff */
|
||||
|
@ -209,6 +214,19 @@ struct imx_port {
|
|||
struct clk *clk_ipg;
|
||||
struct clk *clk_per;
|
||||
const struct imx_uart_data *devdata;
|
||||
|
||||
/* DMA fields */
|
||||
unsigned int dma_is_inited:1;
|
||||
unsigned int dma_is_enabled:1;
|
||||
unsigned int dma_is_rxing:1;
|
||||
unsigned int dma_is_txing:1;
|
||||
struct dma_chan *dma_chan_rx, *dma_chan_tx;
|
||||
struct scatterlist rx_sgl, tx_sgl[2];
|
||||
void *rx_buf;
|
||||
unsigned int rx_bytes, tx_bytes;
|
||||
struct work_struct tsk_dma_rx, tsk_dma_tx;
|
||||
unsigned int dma_tx_nents;
|
||||
wait_queue_head_t dma_wait;
|
||||
};
|
||||
|
||||
struct imx_port_ucrs {
|
||||
|
@ -232,6 +250,10 @@ static struct imx_uart_data imx_uart_devdata[] = {
|
|||
.uts_reg = IMX21_UTS,
|
||||
.devtype = IMX21_UART,
|
||||
},
|
||||
[IMX6Q_UART] = {
|
||||
.uts_reg = IMX21_UTS,
|
||||
.devtype = IMX6Q_UART,
|
||||
},
|
||||
};
|
||||
|
||||
static struct platform_device_id imx_uart_devtype[] = {
|
||||
|
@ -241,6 +263,9 @@ static struct platform_device_id imx_uart_devtype[] = {
|
|||
}, {
|
||||
.name = "imx21-uart",
|
||||
.driver_data = (kernel_ulong_t) &imx_uart_devdata[IMX21_UART],
|
||||
}, {
|
||||
.name = "imx6q-uart",
|
||||
.driver_data = (kernel_ulong_t) &imx_uart_devdata[IMX6Q_UART],
|
||||
}, {
|
||||
/* sentinel */
|
||||
}
|
||||
|
@ -248,6 +273,7 @@ static struct platform_device_id imx_uart_devtype[] = {
|
|||
MODULE_DEVICE_TABLE(platform, imx_uart_devtype);
|
||||
|
||||
static struct of_device_id imx_uart_dt_ids[] = {
|
||||
{ .compatible = "fsl,imx6q-uart", .data = &imx_uart_devdata[IMX6Q_UART], },
|
||||
{ .compatible = "fsl,imx1-uart", .data = &imx_uart_devdata[IMX1_UART], },
|
||||
{ .compatible = "fsl,imx21-uart", .data = &imx_uart_devdata[IMX21_UART], },
|
||||
{ /* sentinel */ }
|
||||
|
@ -269,6 +295,10 @@ static inline int is_imx21_uart(struct imx_port *sport)
|
|||
return sport->devdata->devtype == IMX21_UART;
|
||||
}
|
||||
|
||||
static inline int is_imx6q_uart(struct imx_port *sport)
|
||||
{
|
||||
return sport->devdata->devtype == IMX6Q_UART;
|
||||
}
|
||||
/*
|
||||
* Save and restore functions for UCR1, UCR2 and UCR3 registers
|
||||
*/
|
||||
|
@ -387,6 +417,13 @@ static void imx_stop_tx(struct uart_port *port)
|
|||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* We are maybe in the SMP context, so if the DMA TX thread is running
|
||||
* on other cpu, we have to wait for it to finish.
|
||||
*/
|
||||
if (sport->dma_is_enabled && sport->dma_is_txing)
|
||||
return;
|
||||
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
writel(temp & ~UCR1_TXMPTYEN, sport->port.membase + UCR1);
|
||||
}
|
||||
|
@ -399,6 +436,13 @@ static void imx_stop_rx(struct uart_port *port)
|
|||
struct imx_port *sport = (struct imx_port *)port;
|
||||
unsigned long temp;
|
||||
|
||||
/*
|
||||
* We are maybe in the SMP context, so if the DMA TX thread is running
|
||||
* on other cpu, we have to wait for it to finish.
|
||||
*/
|
||||
if (sport->dma_is_enabled && sport->dma_is_rxing)
|
||||
return;
|
||||
|
||||
temp = readl(sport->port.membase + UCR2);
|
||||
writel(temp & ~UCR2_RXEN, sport->port.membase + UCR2);
|
||||
}
|
||||
|
@ -434,6 +478,95 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
|
|||
imx_stop_tx(&sport->port);
|
||||
}
|
||||
|
||||
static void dma_tx_callback(void *data)
|
||||
{
|
||||
struct imx_port *sport = data;
|
||||
struct scatterlist *sgl = &sport->tx_sgl[0];
|
||||
struct circ_buf *xmit = &sport->port.state->xmit;
|
||||
unsigned long flags;
|
||||
|
||||
dma_unmap_sg(sport->port.dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE);
|
||||
|
||||
sport->dma_is_txing = 0;
|
||||
|
||||
/* update the stat */
|
||||
spin_lock_irqsave(&sport->port.lock, flags);
|
||||
xmit->tail = (xmit->tail + sport->tx_bytes) & (UART_XMIT_SIZE - 1);
|
||||
sport->port.icount.tx += sport->tx_bytes;
|
||||
spin_unlock_irqrestore(&sport->port.lock, flags);
|
||||
|
||||
dev_dbg(sport->port.dev, "we finish the TX DMA.\n");
|
||||
|
||||
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
|
||||
uart_write_wakeup(&sport->port);
|
||||
|
||||
if (waitqueue_active(&sport->dma_wait)) {
|
||||
wake_up(&sport->dma_wait);
|
||||
dev_dbg(sport->port.dev, "exit in %s.\n", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
schedule_work(&sport->tsk_dma_tx);
|
||||
}
|
||||
|
||||
static void dma_tx_work(struct work_struct *w)
|
||||
{
|
||||
struct imx_port *sport = container_of(w, struct imx_port, tsk_dma_tx);
|
||||
struct circ_buf *xmit = &sport->port.state->xmit;
|
||||
struct scatterlist *sgl = sport->tx_sgl;
|
||||
struct dma_async_tx_descriptor *desc;
|
||||
struct dma_chan *chan = sport->dma_chan_tx;
|
||||
struct device *dev = sport->port.dev;
|
||||
enum dma_status status;
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
|
||||
status = chan->device->device_tx_status(chan, (dma_cookie_t)0, NULL);
|
||||
if (DMA_IN_PROGRESS == status)
|
||||
return;
|
||||
|
||||
spin_lock_irqsave(&sport->port.lock, flags);
|
||||
sport->tx_bytes = uart_circ_chars_pending(xmit);
|
||||
if (sport->tx_bytes == 0) {
|
||||
spin_unlock_irqrestore(&sport->port.lock, flags);
|
||||
return;
|
||||
}
|
||||
|
||||
if (xmit->tail > xmit->head) {
|
||||
sport->dma_tx_nents = 2;
|
||||
sg_init_table(sgl, 2);
|
||||
sg_set_buf(sgl, xmit->buf + xmit->tail,
|
||||
UART_XMIT_SIZE - xmit->tail);
|
||||
sg_set_buf(sgl + 1, xmit->buf, xmit->head);
|
||||
} else {
|
||||
sport->dma_tx_nents = 1;
|
||||
sg_init_one(sgl, xmit->buf + xmit->tail, sport->tx_bytes);
|
||||
}
|
||||
spin_unlock_irqrestore(&sport->port.lock, flags);
|
||||
|
||||
ret = dma_map_sg(dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE);
|
||||
if (ret == 0) {
|
||||
dev_err(dev, "DMA mapping error for TX.\n");
|
||||
return;
|
||||
}
|
||||
desc = dmaengine_prep_slave_sg(chan, sgl, sport->dma_tx_nents,
|
||||
DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
|
||||
if (!desc) {
|
||||
dev_err(dev, "We cannot prepare for the TX slave dma!\n");
|
||||
return;
|
||||
}
|
||||
desc->callback = dma_tx_callback;
|
||||
desc->callback_param = sport;
|
||||
|
||||
dev_dbg(dev, "TX: prepare to send %lu bytes by DMA.\n",
|
||||
uart_circ_chars_pending(xmit));
|
||||
/* fire it */
|
||||
sport->dma_is_txing = 1;
|
||||
dmaengine_submit(desc);
|
||||
dma_async_issue_pending(chan);
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* interrupts disabled on entry
|
||||
*/
|
||||
|
@ -460,8 +593,10 @@ static void imx_start_tx(struct uart_port *port)
|
|||
temp |= UCR4_OREN;
|
||||
writel(temp, sport->port.membase + UCR4);
|
||||
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
writel(temp | UCR1_TXMPTYEN, sport->port.membase + UCR1);
|
||||
if (!sport->dma_is_enabled) {
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
writel(temp | UCR1_TXMPTYEN, sport->port.membase + UCR1);
|
||||
}
|
||||
|
||||
if (USE_IRDA(sport)) {
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
|
@ -473,6 +608,15 @@ static void imx_start_tx(struct uart_port *port)
|
|||
writel(temp, sport->port.membase + UCR4);
|
||||
}
|
||||
|
||||
if (sport->dma_is_enabled) {
|
||||
/*
|
||||
* We may in the interrupt context, so arise a work_struct to
|
||||
* do the real job.
|
||||
*/
|
||||
schedule_work(&sport->tsk_dma_tx);
|
||||
return;
|
||||
}
|
||||
|
||||
if (readl(sport->port.membase + uts_reg(sport)) & UTS_TXEMPTY)
|
||||
imx_transmit_buffer(sport);
|
||||
}
|
||||
|
@ -588,6 +732,28 @@ out:
|
|||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/*
|
||||
* If the RXFIFO is filled with some data, and then we
|
||||
* arise a DMA operation to receive them.
|
||||
*/
|
||||
static void imx_dma_rxint(struct imx_port *sport)
|
||||
{
|
||||
unsigned long temp;
|
||||
|
||||
temp = readl(sport->port.membase + USR2);
|
||||
if ((temp & USR2_RDR) && !sport->dma_is_rxing) {
|
||||
sport->dma_is_rxing = 1;
|
||||
|
||||
/* disable the `Recerver Ready Interrrupt` */
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
temp &= ~(UCR1_RRDYEN);
|
||||
writel(temp, sport->port.membase + UCR1);
|
||||
|
||||
/* tell the DMA to receive the data. */
|
||||
schedule_work(&sport->tsk_dma_rx);
|
||||
}
|
||||
}
|
||||
|
||||
static irqreturn_t imx_int(int irq, void *dev_id)
|
||||
{
|
||||
struct imx_port *sport = dev_id;
|
||||
|
@ -596,8 +762,12 @@ static irqreturn_t imx_int(int irq, void *dev_id)
|
|||
|
||||
sts = readl(sport->port.membase + USR1);
|
||||
|
||||
if (sts & USR1_RRDY)
|
||||
imx_rxint(irq, dev_id);
|
||||
if (sts & USR1_RRDY) {
|
||||
if (sport->dma_is_enabled)
|
||||
imx_dma_rxint(sport);
|
||||
else
|
||||
imx_rxint(irq, dev_id);
|
||||
}
|
||||
|
||||
if (sts & USR1_TRDY &&
|
||||
readl(sport->port.membase + UCR1) & UCR1_TXMPTYEN)
|
||||
|
@ -654,7 +824,8 @@ static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
|
|||
temp = readl(sport->port.membase + UCR2) & ~UCR2_CTS;
|
||||
|
||||
if (mctrl & TIOCM_RTS)
|
||||
temp |= UCR2_CTS;
|
||||
if (!sport->dma_is_enabled)
|
||||
temp |= UCR2_CTS;
|
||||
|
||||
writel(temp, sport->port.membase + UCR2);
|
||||
}
|
||||
|
@ -693,6 +864,226 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
|
|||
return 0;
|
||||
}
|
||||
|
||||
#define RX_BUF_SIZE (PAGE_SIZE)
|
||||
static int start_rx_dma(struct imx_port *sport);
|
||||
static void dma_rx_work(struct work_struct *w)
|
||||
{
|
||||
struct imx_port *sport = container_of(w, struct imx_port, tsk_dma_rx);
|
||||
struct tty_port *port = &sport->port.state->port;
|
||||
|
||||
if (sport->rx_bytes) {
|
||||
tty_insert_flip_string(port, sport->rx_buf, sport->rx_bytes);
|
||||
tty_flip_buffer_push(port);
|
||||
sport->rx_bytes = 0;
|
||||
}
|
||||
|
||||
if (sport->dma_is_rxing)
|
||||
start_rx_dma(sport);
|
||||
}
|
||||
|
||||
static void imx_rx_dma_done(struct imx_port *sport)
|
||||
{
|
||||
unsigned long temp;
|
||||
|
||||
/* Enable this interrupt when the RXFIFO is empty. */
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
temp |= UCR1_RRDYEN;
|
||||
writel(temp, sport->port.membase + UCR1);
|
||||
|
||||
sport->dma_is_rxing = 0;
|
||||
|
||||
/* Is the shutdown waiting for us? */
|
||||
if (waitqueue_active(&sport->dma_wait))
|
||||
wake_up(&sport->dma_wait);
|
||||
}
|
||||
|
||||
/*
|
||||
* There are three kinds of RX DMA interrupts(such as in the MX6Q):
|
||||
* [1] the RX DMA buffer is full.
|
||||
* [2] the Aging timer expires(wait for 8 bytes long)
|
||||
* [3] the Idle Condition Detect(enabled the UCR4_IDDMAEN).
|
||||
*
|
||||
* The [2] is trigger when a character was been sitting in the FIFO
|
||||
* meanwhile [3] can wait for 32 bytes long when the RX line is
|
||||
* on IDLE state and RxFIFO is empty.
|
||||
*/
|
||||
static void dma_rx_callback(void *data)
|
||||
{
|
||||
struct imx_port *sport = data;
|
||||
struct dma_chan *chan = sport->dma_chan_rx;
|
||||
struct scatterlist *sgl = &sport->rx_sgl;
|
||||
struct dma_tx_state state;
|
||||
enum dma_status status;
|
||||
unsigned int count;
|
||||
|
||||
/* unmap it first */
|
||||
dma_unmap_sg(sport->port.dev, sgl, 1, DMA_FROM_DEVICE);
|
||||
|
||||
status = chan->device->device_tx_status(chan, (dma_cookie_t)0, &state);
|
||||
count = RX_BUF_SIZE - state.residue;
|
||||
dev_dbg(sport->port.dev, "We get %d bytes.\n", count);
|
||||
|
||||
if (count) {
|
||||
sport->rx_bytes = count;
|
||||
schedule_work(&sport->tsk_dma_rx);
|
||||
} else
|
||||
imx_rx_dma_done(sport);
|
||||
}
|
||||
|
||||
static int start_rx_dma(struct imx_port *sport)
|
||||
{
|
||||
struct scatterlist *sgl = &sport->rx_sgl;
|
||||
struct dma_chan *chan = sport->dma_chan_rx;
|
||||
struct device *dev = sport->port.dev;
|
||||
struct dma_async_tx_descriptor *desc;
|
||||
int ret;
|
||||
|
||||
sg_init_one(sgl, sport->rx_buf, RX_BUF_SIZE);
|
||||
ret = dma_map_sg(dev, sgl, 1, DMA_FROM_DEVICE);
|
||||
if (ret == 0) {
|
||||
dev_err(dev, "DMA mapping error for RX.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
desc = dmaengine_prep_slave_sg(chan, sgl, 1, DMA_DEV_TO_MEM,
|
||||
DMA_PREP_INTERRUPT);
|
||||
if (!desc) {
|
||||
dev_err(dev, "We cannot prepare for the RX slave dma!\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
desc->callback = dma_rx_callback;
|
||||
desc->callback_param = sport;
|
||||
|
||||
dev_dbg(dev, "RX: prepare for the DMA.\n");
|
||||
dmaengine_submit(desc);
|
||||
dma_async_issue_pending(chan);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void imx_uart_dma_exit(struct imx_port *sport)
|
||||
{
|
||||
if (sport->dma_chan_rx) {
|
||||
dma_release_channel(sport->dma_chan_rx);
|
||||
sport->dma_chan_rx = NULL;
|
||||
|
||||
kfree(sport->rx_buf);
|
||||
sport->rx_buf = NULL;
|
||||
}
|
||||
|
||||
if (sport->dma_chan_tx) {
|
||||
dma_release_channel(sport->dma_chan_tx);
|
||||
sport->dma_chan_tx = NULL;
|
||||
}
|
||||
|
||||
sport->dma_is_inited = 0;
|
||||
}
|
||||
|
||||
static int imx_uart_dma_init(struct imx_port *sport)
|
||||
{
|
||||
struct dma_slave_config slave_config = {};
|
||||
struct device *dev = sport->port.dev;
|
||||
int ret;
|
||||
|
||||
/* Prepare for RX : */
|
||||
sport->dma_chan_rx = dma_request_slave_channel(dev, "rx");
|
||||
if (!sport->dma_chan_rx) {
|
||||
dev_dbg(dev, "cannot get the DMA channel.\n");
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
|
||||
slave_config.direction = DMA_DEV_TO_MEM;
|
||||
slave_config.src_addr = sport->port.mapbase + URXD0;
|
||||
slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
|
||||
slave_config.src_maxburst = RXTL;
|
||||
ret = dmaengine_slave_config(sport->dma_chan_rx, &slave_config);
|
||||
if (ret) {
|
||||
dev_err(dev, "error in RX dma configuration.\n");
|
||||
goto err;
|
||||
}
|
||||
|
||||
sport->rx_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
||||
if (!sport->rx_buf) {
|
||||
dev_err(dev, "cannot alloc DMA buffer.\n");
|
||||
ret = -ENOMEM;
|
||||
goto err;
|
||||
}
|
||||
sport->rx_bytes = 0;
|
||||
|
||||
/* Prepare for TX : */
|
||||
sport->dma_chan_tx = dma_request_slave_channel(dev, "tx");
|
||||
if (!sport->dma_chan_tx) {
|
||||
dev_err(dev, "cannot get the TX DMA channel!\n");
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
|
||||
slave_config.direction = DMA_MEM_TO_DEV;
|
||||
slave_config.dst_addr = sport->port.mapbase + URTX0;
|
||||
slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
|
||||
slave_config.dst_maxburst = TXTL;
|
||||
ret = dmaengine_slave_config(sport->dma_chan_tx, &slave_config);
|
||||
if (ret) {
|
||||
dev_err(dev, "error in TX dma configuration.");
|
||||
goto err;
|
||||
}
|
||||
|
||||
sport->dma_is_inited = 1;
|
||||
|
||||
return 0;
|
||||
err:
|
||||
imx_uart_dma_exit(sport);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void imx_enable_dma(struct imx_port *sport)
|
||||
{
|
||||
unsigned long temp;
|
||||
struct tty_port *port = &sport->port.state->port;
|
||||
|
||||
port->low_latency = 1;
|
||||
INIT_WORK(&sport->tsk_dma_tx, dma_tx_work);
|
||||
INIT_WORK(&sport->tsk_dma_rx, dma_rx_work);
|
||||
init_waitqueue_head(&sport->dma_wait);
|
||||
|
||||
/* set UCR1 */
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
temp |= UCR1_RDMAEN | UCR1_TDMAEN | UCR1_ATDMAEN |
|
||||
/* wait for 32 idle frames for IDDMA interrupt */
|
||||
UCR1_ICD_REG(3);
|
||||
writel(temp, sport->port.membase + UCR1);
|
||||
|
||||
/* set UCR4 */
|
||||
temp = readl(sport->port.membase + UCR4);
|
||||
temp |= UCR4_IDDMAEN;
|
||||
writel(temp, sport->port.membase + UCR4);
|
||||
|
||||
sport->dma_is_enabled = 1;
|
||||
}
|
||||
|
||||
static void imx_disable_dma(struct imx_port *sport)
|
||||
{
|
||||
unsigned long temp;
|
||||
struct tty_port *port = &sport->port.state->port;
|
||||
|
||||
/* clear UCR1 */
|
||||
temp = readl(sport->port.membase + UCR1);
|
||||
temp &= ~(UCR1_RDMAEN | UCR1_TDMAEN | UCR1_ATDMAEN);
|
||||
writel(temp, sport->port.membase + UCR1);
|
||||
|
||||
/* clear UCR2 */
|
||||
temp = readl(sport->port.membase + UCR2);
|
||||
temp &= ~(UCR2_CTSC | UCR2_CTS);
|
||||
writel(temp, sport->port.membase + UCR2);
|
||||
|
||||
/* clear UCR4 */
|
||||
temp = readl(sport->port.membase + UCR4);
|
||||
temp &= ~UCR4_IDDMAEN;
|
||||
writel(temp, sport->port.membase + UCR4);
|
||||
|
||||
sport->dma_is_enabled = 0;
|
||||
port->low_latency = 0;
|
||||
}
|
||||
|
||||
/* half the RX buffer size */
|
||||
#define CTSTL 16
|
||||
|
||||
|
@ -702,15 +1093,13 @@ static int imx_startup(struct uart_port *port)
|
|||
int retval;
|
||||
unsigned long flags, temp;
|
||||
|
||||
if (!uart_console(port)) {
|
||||
retval = clk_prepare_enable(sport->clk_per);
|
||||
if (retval)
|
||||
goto error_out1;
|
||||
retval = clk_prepare_enable(sport->clk_ipg);
|
||||
if (retval) {
|
||||
clk_disable_unprepare(sport->clk_per);
|
||||
goto error_out1;
|
||||
}
|
||||
retval = clk_prepare_enable(sport->clk_per);
|
||||
if (retval)
|
||||
goto error_out1;
|
||||
retval = clk_prepare_enable(sport->clk_ipg);
|
||||
if (retval) {
|
||||
clk_disable_unprepare(sport->clk_per);
|
||||
goto error_out1;
|
||||
}
|
||||
|
||||
imx_setup_ufcr(sport, 0);
|
||||
|
@ -803,7 +1192,7 @@ static int imx_startup(struct uart_port *port)
|
|||
}
|
||||
}
|
||||
|
||||
if (is_imx21_uart(sport)) {
|
||||
if (!is_imx1_uart(sport)) {
|
||||
temp = readl(sport->port.membase + UCR3);
|
||||
temp |= IMX21_UCR3_RXDMUXSEL;
|
||||
writel(temp, sport->port.membase + UCR3);
|
||||
|
@ -833,7 +1222,7 @@ static int imx_startup(struct uart_port *port)
|
|||
|
||||
if (USE_IRDA(sport)) {
|
||||
struct imxuart_platform_data *pdata;
|
||||
pdata = sport->port.dev->platform_data;
|
||||
pdata = dev_get_platdata(sport->port.dev);
|
||||
sport->irda_inv_rx = pdata->irda_inv_rx;
|
||||
sport->irda_inv_tx = pdata->irda_inv_tx;
|
||||
sport->trcv_delay = pdata->transceiver_delay;
|
||||
|
@ -859,6 +1248,15 @@ static void imx_shutdown(struct uart_port *port)
|
|||
unsigned long temp;
|
||||
unsigned long flags;
|
||||
|
||||
if (sport->dma_is_enabled) {
|
||||
/* We have to wait for the DMA to finish. */
|
||||
wait_event(sport->dma_wait,
|
||||
!sport->dma_is_rxing && !sport->dma_is_txing);
|
||||
imx_stop_rx(port);
|
||||
imx_disable_dma(sport);
|
||||
imx_uart_dma_exit(sport);
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&sport->port.lock, flags);
|
||||
temp = readl(sport->port.membase + UCR2);
|
||||
temp &= ~(UCR2_TXEN);
|
||||
|
@ -867,7 +1265,7 @@ static void imx_shutdown(struct uart_port *port)
|
|||
|
||||
if (USE_IRDA(sport)) {
|
||||
struct imxuart_platform_data *pdata;
|
||||
pdata = sport->port.dev->platform_data;
|
||||
pdata = dev_get_platdata(sport->port.dev);
|
||||
if (pdata->irda_enable)
|
||||
pdata->irda_enable(0);
|
||||
}
|
||||
|
@ -901,10 +1299,8 @@ static void imx_shutdown(struct uart_port *port)
|
|||
writel(temp, sport->port.membase + UCR1);
|
||||
spin_unlock_irqrestore(&sport->port.lock, flags);
|
||||
|
||||
if (!uart_console(&sport->port)) {
|
||||
clk_disable_unprepare(sport->clk_per);
|
||||
clk_disable_unprepare(sport->clk_ipg);
|
||||
}
|
||||
clk_disable_unprepare(sport->clk_per);
|
||||
clk_disable_unprepare(sport->clk_ipg);
|
||||
}
|
||||
|
||||
static void
|
||||
|
@ -947,6 +1343,11 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
|
|||
if (sport->have_rtscts) {
|
||||
ucr2 &= ~UCR2_IRTS;
|
||||
ucr2 |= UCR2_CTSC;
|
||||
|
||||
/* Can we enable the DMA support? */
|
||||
if (is_imx6q_uart(sport) && !uart_console(port)
|
||||
&& !sport->dma_is_inited)
|
||||
imx_uart_dma_init(sport);
|
||||
} else {
|
||||
termios->c_cflag &= ~CRTSCTS;
|
||||
}
|
||||
|
@ -1020,6 +1421,11 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
|
|||
*/
|
||||
div = 1;
|
||||
} else {
|
||||
/* custom-baudrate handling */
|
||||
div = sport->port.uartclk / (baud * 16);
|
||||
if (baud == 38400 && quot != div)
|
||||
baud = sport->port.uartclk / (quot * 16);
|
||||
|
||||
div = sport->port.uartclk / (baud * 16);
|
||||
if (div > 7)
|
||||
div = 7;
|
||||
|
@ -1048,7 +1454,7 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
|
|||
writel(num, sport->port.membase + UBIR);
|
||||
writel(denom, sport->port.membase + UBMR);
|
||||
|
||||
if (is_imx21_uart(sport))
|
||||
if (!is_imx1_uart(sport))
|
||||
writel(sport->port.uartclk / div / 1000,
|
||||
sport->port.membase + IMX21_ONEMS);
|
||||
|
||||
|
@ -1060,6 +1466,8 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
|
|||
if (UART_ENABLE_MS(&sport->port, termios->c_cflag))
|
||||
imx_enable_ms(&sport->port);
|
||||
|
||||
if (sport->dma_is_inited && !sport->dma_is_enabled)
|
||||
imx_enable_dma(sport);
|
||||
spin_unlock_irqrestore(&sport->port.lock, flags);
|
||||
}
|
||||
|
||||
|
@ -1251,6 +1659,16 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
|
|||
unsigned int ucr1;
|
||||
unsigned long flags = 0;
|
||||
int locked = 1;
|
||||
int retval;
|
||||
|
||||
retval = clk_enable(sport->clk_per);
|
||||
if (retval)
|
||||
return;
|
||||
retval = clk_enable(sport->clk_ipg);
|
||||
if (retval) {
|
||||
clk_disable(sport->clk_per);
|
||||
return;
|
||||
}
|
||||
|
||||
if (sport->port.sysrq)
|
||||
locked = 0;
|
||||
|
@ -1286,6 +1704,9 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
|
|||
|
||||
if (locked)
|
||||
spin_unlock_irqrestore(&sport->port.lock, flags);
|
||||
|
||||
clk_disable(sport->clk_ipg);
|
||||
clk_disable(sport->clk_per);
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -1359,6 +1780,7 @@ imx_console_setup(struct console *co, char *options)
|
|||
int bits = 8;
|
||||
int parity = 'n';
|
||||
int flow = 'n';
|
||||
int retval;
|
||||
|
||||
/*
|
||||
* Check whether an invalid uart number has been specified, and
|
||||
|
@ -1371,6 +1793,11 @@ imx_console_setup(struct console *co, char *options)
|
|||
if (sport == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
/* For setting the registers, we only need to enable the ipg clock. */
|
||||
retval = clk_prepare_enable(sport->clk_ipg);
|
||||
if (retval)
|
||||
goto error_console;
|
||||
|
||||
if (options)
|
||||
uart_parse_options(options, &baud, &parity, &bits, &flow);
|
||||
else
|
||||
|
@ -1378,7 +1805,20 @@ imx_console_setup(struct console *co, char *options)
|
|||
|
||||
imx_setup_ufcr(sport, 0);
|
||||
|
||||
return uart_set_options(&sport->port, co, baud, parity, bits, flow);
|
||||
retval = uart_set_options(&sport->port, co, baud, parity, bits, flow);
|
||||
|
||||
clk_disable(sport->clk_ipg);
|
||||
if (retval) {
|
||||
clk_unprepare(sport->clk_ipg);
|
||||
goto error_console;
|
||||
}
|
||||
|
||||
retval = clk_prepare(sport->clk_per);
|
||||
if (retval)
|
||||
clk_disable_unprepare(sport->clk_ipg);
|
||||
|
||||
error_console:
|
||||
return retval;
|
||||
}
|
||||
|
||||
static struct uart_driver imx_reg;
|
||||
|
@ -1472,6 +1912,9 @@ static int serial_imx_probe_dt(struct imx_port *sport,
|
|||
|
||||
sport->devdata = of_id->data;
|
||||
|
||||
if (of_device_is_stdout_path(np))
|
||||
add_preferred_console(imx_reg.cons->name, sport->port.line, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
|
@ -1485,7 +1928,7 @@ static inline int serial_imx_probe_dt(struct imx_port *sport,
|
|||
static void serial_imx_probe_pdata(struct imx_port *sport,
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
struct imxuart_platform_data *pdata = pdev->dev.platform_data;
|
||||
struct imxuart_platform_data *pdata = dev_get_platdata(&pdev->dev);
|
||||
|
||||
sport->port.line = pdev->id;
|
||||
sport->devdata = (struct imx_uart_data *) pdev->id_entry->driver_data;
|
||||
|
@ -1507,7 +1950,6 @@ static int serial_imx_probe(struct platform_device *pdev)
|
|||
void __iomem *base;
|
||||
int ret = 0;
|
||||
struct resource *res;
|
||||
struct pinctrl *pinctrl;
|
||||
|
||||
sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL);
|
||||
if (!sport)
|
||||
|
@ -1543,13 +1985,6 @@ static int serial_imx_probe(struct platform_device *pdev)
|
|||
sport->timer.function = imx_timeout;
|
||||
sport->timer.data = (unsigned long)sport;
|
||||
|
||||
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
|
||||
if (IS_ERR(pinctrl)) {
|
||||
ret = PTR_ERR(pinctrl);
|
||||
dev_err(&pdev->dev, "failed to get default pinctrl: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
sport->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
|
||||
if (IS_ERR(sport->clk_ipg)) {
|
||||
ret = PTR_ERR(sport->clk_ipg);
|
||||
|
@ -1564,18 +1999,15 @@ static int serial_imx_probe(struct platform_device *pdev)
|
|||
return ret;
|
||||
}
|
||||
|
||||
clk_prepare_enable(sport->clk_per);
|
||||
clk_prepare_enable(sport->clk_ipg);
|
||||
|
||||
sport->port.uartclk = clk_get_rate(sport->clk_per);
|
||||
|
||||
imx_ports[sport->port.line] = sport;
|
||||
|
||||
pdata = pdev->dev.platform_data;
|
||||
pdata = dev_get_platdata(&pdev->dev);
|
||||
if (pdata && pdata->init) {
|
||||
ret = pdata->init(pdev);
|
||||
if (ret)
|
||||
goto clkput;
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = uart_add_one_port(&imx_reg, &sport->port);
|
||||
|
@ -1583,18 +2015,10 @@ static int serial_imx_probe(struct platform_device *pdev)
|
|||
goto deinit;
|
||||
platform_set_drvdata(pdev, sport);
|
||||
|
||||
if (!uart_console(&sport->port)) {
|
||||
clk_disable_unprepare(sport->clk_per);
|
||||
clk_disable_unprepare(sport->clk_ipg);
|
||||
}
|
||||
|
||||
return 0;
|
||||
deinit:
|
||||
if (pdata && pdata->exit)
|
||||
pdata->exit(pdev);
|
||||
clkput:
|
||||
clk_disable_unprepare(sport->clk_per);
|
||||
clk_disable_unprepare(sport->clk_ipg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1603,9 +2027,7 @@ static int serial_imx_remove(struct platform_device *pdev)
|
|||
struct imxuart_platform_data *pdata;
|
||||
struct imx_port *sport = platform_get_drvdata(pdev);
|
||||
|
||||
pdata = pdev->dev.platform_data;
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
pdata = dev_get_platdata(&pdev->dev);
|
||||
|
||||
uart_remove_one_port(&imx_reg, &sport->port);
|
||||
|
||||
|
|
|
@ -297,7 +297,7 @@ struct ioc4_serial {
|
|||
struct ioc4_uartregs uart_1;
|
||||
struct ioc4_uartregs uart_2;
|
||||
struct ioc4_uartregs uart_3;
|
||||
} ioc4_serial;
|
||||
};
|
||||
|
||||
/* UART clock speed */
|
||||
#define IOC4_SER_XIN_CLK_66 66666667
|
||||
|
@ -2767,7 +2767,7 @@ ioc4_serial_core_attach(struct pci_dev *pdev, int port_type)
|
|||
* called per card found from IOC4 master module.
|
||||
* @idd: Master module data for this IOC4
|
||||
*/
|
||||
int
|
||||
static int
|
||||
ioc4_serial_attach_one(struct ioc4_driver_data *idd)
|
||||
{
|
||||
unsigned long tmp_addr1;
|
||||
|
|
|
@ -318,7 +318,7 @@ lqasc_startup(struct uart_port *port)
|
|||
struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);
|
||||
int retval;
|
||||
|
||||
if (ltq_port->clk)
|
||||
if (!IS_ERR(ltq_port->clk))
|
||||
clk_enable(ltq_port->clk);
|
||||
port->uartclk = clk_get_rate(ltq_port->fpiclk);
|
||||
|
||||
|
@ -386,7 +386,7 @@ lqasc_shutdown(struct uart_port *port)
|
|||
port->membase + LTQ_ASC_RXFCON);
|
||||
ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
|
||||
port->membase + LTQ_ASC_TXFCON);
|
||||
if (ltq_port->clk)
|
||||
if (!IS_ERR(ltq_port->clk))
|
||||
clk_disable(ltq_port->clk);
|
||||
}
|
||||
|
||||
|
@ -636,6 +636,9 @@ lqasc_console_setup(struct console *co, char *options)
|
|||
|
||||
port = <q_port->port;
|
||||
|
||||
if (!IS_ERR(ltq_port->clk))
|
||||
clk_enable(ltq_port->clk);
|
||||
|
||||
port->uartclk = clk_get_rate(ltq_port->fpiclk);
|
||||
|
||||
if (options)
|
||||
|
|
|
@ -279,7 +279,10 @@ static void __serial_lpc32xx_rx(struct uart_port *port)
|
|||
|
||||
tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(tport);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
static void __serial_lpc32xx_tx(struct uart_port *port)
|
||||
|
@ -351,10 +354,8 @@ static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id)
|
|||
}
|
||||
|
||||
/* Data received? */
|
||||
if (status & (LPC32XX_HSU_RX_TIMEOUT_INT | LPC32XX_HSU_RX_TRIG_INT)) {
|
||||
if (status & (LPC32XX_HSU_RX_TIMEOUT_INT | LPC32XX_HSU_RX_TRIG_INT))
|
||||
__serial_lpc32xx_rx(port);
|
||||
tty_flip_buffer_push(tport);
|
||||
}
|
||||
|
||||
/* Transmit data request? */
|
||||
if ((status & LPC32XX_HSU_TX_INT) && (!uart_tx_stopped(port))) {
|
||||
|
|
|
@ -368,7 +368,10 @@ static void receive_chars(struct uart_sio_port *up, int *status)
|
|||
ignore_char:
|
||||
*status = serial_in(up, UART_LSR);
|
||||
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
|
||||
|
||||
spin_unlock(&up->port.lock);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock(&up->port.lock);
|
||||
}
|
||||
|
||||
static void transmit_chars(struct uart_sio_port *up)
|
||||
|
|
|
@ -779,7 +779,7 @@ static int max3100_probe(struct spi_device *spi)
|
|||
max3100s[i]->irq = spi->irq;
|
||||
spin_lock_init(&max3100s[i]->conf_lock);
|
||||
spi_set_drvdata(spi, max3100s[i]);
|
||||
pdata = spi->dev.platform_data;
|
||||
pdata = dev_get_platdata(&spi->dev);
|
||||
max3100s[i]->crystal = pdata->crystal;
|
||||
max3100s[i]->loopback = pdata->loopback;
|
||||
max3100s[i]->poll_time = pdata->poll_time * HZ / 1000;
|
||||
|
|
File diff suppressed because it is too large
Load Diff
|
@ -24,6 +24,7 @@
|
|||
#include <linux/serial_core.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <asm/coldfire.h>
|
||||
#include <asm/mcfsim.h>
|
||||
#include <asm/mcfuart.h>
|
||||
|
@ -324,7 +325,9 @@ static void mcf_rx_chars(struct mcf_uart *pp)
|
|||
uart_insert_char(port, status, MCFUART_USR_RXOVERRUN, ch, flag);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(&port->state->port);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
/****************************************************************************/
|
||||
|
@ -644,7 +647,7 @@ static struct uart_driver mcf_driver = {
|
|||
|
||||
static int mcf_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct mcf_platform_uart *platp = pdev->dev.platform_data;
|
||||
struct mcf_platform_uart *platp = dev_get_platdata(&pdev->dev);
|
||||
struct uart_port *port;
|
||||
int i;
|
||||
|
||||
|
|
|
@ -386,7 +386,7 @@ static void serial_hsu_stop_tx(struct uart_port *port)
|
|||
|
||||
/* This is always called in spinlock protected mode, so
|
||||
* modify timeout timer is safe here */
|
||||
void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts)
|
||||
void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts, unsigned long *flags)
|
||||
{
|
||||
struct hsu_dma_buffer *dbuf = &up->rxbuf;
|
||||
struct hsu_dma_chan *chan = up->rxc;
|
||||
|
@ -438,7 +438,9 @@ void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts)
|
|||
| (0x1 << 16)
|
||||
| (0x1 << 24) /* timeout bit, see HSU Errata 1 */
|
||||
);
|
||||
spin_unlock_irqrestore(&up->port.lock, *flags);
|
||||
tty_flip_buffer_push(tport);
|
||||
spin_lock_irqsave(&up->port.lock, *flags);
|
||||
|
||||
chan_writel(chan, HSU_CH_CR, 0x3);
|
||||
|
||||
|
@ -459,7 +461,8 @@ static void serial_hsu_stop_rx(struct uart_port *port)
|
|||
}
|
||||
}
|
||||
|
||||
static inline void receive_chars(struct uart_hsu_port *up, int *status)
|
||||
static inline void receive_chars(struct uart_hsu_port *up, int *status,
|
||||
unsigned long *flags)
|
||||
{
|
||||
unsigned int ch, flag;
|
||||
unsigned int max_count = 256;
|
||||
|
@ -519,7 +522,10 @@ static inline void receive_chars(struct uart_hsu_port *up, int *status)
|
|||
ignore_char:
|
||||
*status = serial_in(up, UART_LSR);
|
||||
} while ((*status & UART_LSR_DR) && max_count--);
|
||||
|
||||
spin_unlock_irqrestore(&up->port.lock, *flags);
|
||||
tty_flip_buffer_push(&up->port.state->port);
|
||||
spin_lock_irqsave(&up->port.lock, *flags);
|
||||
}
|
||||
|
||||
static void transmit_chars(struct uart_hsu_port *up)
|
||||
|
@ -613,7 +619,7 @@ static irqreturn_t port_irq(int irq, void *dev_id)
|
|||
|
||||
lsr = serial_in(up, UART_LSR);
|
||||
if (lsr & UART_LSR_DR)
|
||||
receive_chars(up, &lsr);
|
||||
receive_chars(up, &lsr, &flags);
|
||||
check_modem_status(up);
|
||||
|
||||
/* lsr will be renewed during the receive_chars */
|
||||
|
@ -643,7 +649,7 @@ static inline void dma_chan_irq(struct hsu_dma_chan *chan)
|
|||
|
||||
/* Rx channel */
|
||||
if (chan->dirt == DMA_FROM_DEVICE)
|
||||
hsu_dma_rx(up, int_sts);
|
||||
hsu_dma_rx(up, int_sts, &flags);
|
||||
|
||||
/* Tx channel */
|
||||
if (chan->dirt == DMA_TO_DEVICE) {
|
||||
|
|
|
@ -934,7 +934,7 @@ static int serial_polled;
|
|||
******************************************************************************
|
||||
*/
|
||||
|
||||
static int mpsc_rx_intr(struct mpsc_port_info *pi)
|
||||
static int mpsc_rx_intr(struct mpsc_port_info *pi, unsigned long *flags)
|
||||
{
|
||||
struct mpsc_rx_desc *rxre;
|
||||
struct tty_port *port = &pi->port.state->port;
|
||||
|
@ -969,8 +969,11 @@ static int mpsc_rx_intr(struct mpsc_port_info *pi)
|
|||
#endif
|
||||
/* Following use of tty struct directly is deprecated */
|
||||
if (tty_buffer_request_room(port, bytes_in) < bytes_in) {
|
||||
if (port->low_latency)
|
||||
if (port->low_latency) {
|
||||
spin_unlock_irqrestore(&pi->port.lock, *flags);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock_irqsave(&pi->port.lock, *flags);
|
||||
}
|
||||
/*
|
||||
* If this failed then we will throw away the bytes
|
||||
* but must do so to clear interrupts.
|
||||
|
@ -1080,7 +1083,9 @@ next_frame:
|
|||
if ((readl(pi->sdma_base + SDMA_SDCM) & SDMA_SDCM_ERD) == 0)
|
||||
mpsc_start_rx(pi);
|
||||
|
||||
spin_unlock_irqrestore(&pi->port.lock, *flags);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock_irqsave(&pi->port.lock, *flags);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
@ -1222,7 +1227,7 @@ static irqreturn_t mpsc_sdma_intr(int irq, void *dev_id)
|
|||
|
||||
spin_lock_irqsave(&pi->port.lock, iflags);
|
||||
mpsc_sdma_intr_ack(pi);
|
||||
if (mpsc_rx_intr(pi))
|
||||
if (mpsc_rx_intr(pi, &iflags))
|
||||
rc = IRQ_HANDLED;
|
||||
if (mpsc_tx_intr(pi))
|
||||
rc = IRQ_HANDLED;
|
||||
|
@ -1884,7 +1889,7 @@ static int mpsc_shared_drv_probe(struct platform_device *dev)
|
|||
if (dev->id == 0) {
|
||||
if (!(rc = mpsc_shared_map_regs(dev))) {
|
||||
pdata = (struct mpsc_shared_pdata *)
|
||||
dev->dev.platform_data;
|
||||
dev_get_platdata(&dev->dev);
|
||||
|
||||
mpsc_shared_regs.MPSC_MRR_m = pdata->mrr_val;
|
||||
mpsc_shared_regs.MPSC_RCRR_m= pdata->rcrr_val;
|
||||
|
@ -2025,7 +2030,7 @@ static void mpsc_drv_get_platform_data(struct mpsc_port_info *pi,
|
|||
{
|
||||
struct mpsc_pdata *pdata;
|
||||
|
||||
pdata = (struct mpsc_pdata *)pd->dev.platform_data;
|
||||
pdata = (struct mpsc_pdata *)dev_get_platdata(&pd->dev);
|
||||
|
||||
pi->port.uartclk = pdata->brg_clk_freq;
|
||||
pi->port.iotype = UPIO_MEM;
|
||||
|
|
|
@ -713,7 +713,7 @@ static void serial_m3110_enable_ms(struct uart_port *port)
|
|||
{
|
||||
}
|
||||
|
||||
struct uart_ops serial_m3110_ops = {
|
||||
static struct uart_ops serial_m3110_ops = {
|
||||
.tx_empty = serial_m3110_tx_empty,
|
||||
.set_mctrl = serial_m3110_set_mctrl,
|
||||
.get_mctrl = serial_m3110_get_mctrl,
|
||||
|
@ -844,7 +844,7 @@ static int serial_m3110_probe(struct spi_device *spi)
|
|||
pmax = max;
|
||||
|
||||
/* Give membase a psudo value to pass serial_core's check */
|
||||
max->port.membase = (void *)0xff110000;
|
||||
max->port.membase = (unsigned char __iomem *)0xff110000;
|
||||
uart_add_one_port(&serial_m3110_reg, &max->port);
|
||||
|
||||
return 0;
|
||||
|
|
|
@ -45,16 +45,19 @@ struct msm_port {
|
|||
struct clk *clk;
|
||||
struct clk *pclk;
|
||||
unsigned int imr;
|
||||
unsigned int *gsbi_base;
|
||||
void __iomem *gsbi_base;
|
||||
int is_uartdm;
|
||||
unsigned int old_snap_state;
|
||||
};
|
||||
|
||||
static inline void wait_for_xmitr(struct uart_port *port, int bits)
|
||||
static inline void wait_for_xmitr(struct uart_port *port)
|
||||
{
|
||||
if (!(msm_read(port, UART_SR) & UART_SR_TX_EMPTY))
|
||||
while ((msm_read(port, UART_ISR) & bits) != bits)
|
||||
cpu_relax();
|
||||
while (!(msm_read(port, UART_SR) & UART_SR_TX_EMPTY)) {
|
||||
if (msm_read(port, UART_ISR) & UART_ISR_TX_READY)
|
||||
break;
|
||||
udelay(1);
|
||||
}
|
||||
msm_write(port, UART_CR_CMD_RESET_TX_READY, UART_CR);
|
||||
}
|
||||
|
||||
static void msm_stop_tx(struct uart_port *port)
|
||||
|
@ -137,7 +140,10 @@ static void handle_rx_dm(struct uart_port *port, unsigned int misr)
|
|||
count -= 4;
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(tport);
|
||||
spin_lock(&port->lock);
|
||||
|
||||
if (misr & (UART_IMR_RXSTALE))
|
||||
msm_write(port, UART_CR_CMD_RESET_STALE_INT, UART_CR);
|
||||
msm_write(port, 0xFFFFFF, UARTDM_DMRX);
|
||||
|
@ -189,52 +195,69 @@ static void handle_rx(struct uart_port *port)
|
|||
tty_insert_flip_char(tport, c, flag);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(tport);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
static void reset_dm_count(struct uart_port *port)
|
||||
static void reset_dm_count(struct uart_port *port, int count)
|
||||
{
|
||||
wait_for_xmitr(port, UART_ISR_TX_READY);
|
||||
msm_write(port, 1, UARTDM_NCF_TX);
|
||||
wait_for_xmitr(port);
|
||||
msm_write(port, count, UARTDM_NCF_TX);
|
||||
msm_read(port, UARTDM_NCF_TX);
|
||||
}
|
||||
|
||||
static void handle_tx(struct uart_port *port)
|
||||
{
|
||||
struct circ_buf *xmit = &port->state->xmit;
|
||||
struct msm_port *msm_port = UART_TO_MSM(port);
|
||||
int sent_tx;
|
||||
unsigned int tx_count, num_chars;
|
||||
unsigned int tf_pointer = 0;
|
||||
|
||||
tx_count = uart_circ_chars_pending(xmit);
|
||||
tx_count = min3(tx_count, (unsigned int)UART_XMIT_SIZE - xmit->tail,
|
||||
port->fifosize);
|
||||
|
||||
if (port->x_char) {
|
||||
if (msm_port->is_uartdm)
|
||||
reset_dm_count(port);
|
||||
reset_dm_count(port, tx_count + 1);
|
||||
|
||||
msm_write(port, port->x_char,
|
||||
msm_port->is_uartdm ? UARTDM_TF : UART_TF);
|
||||
port->icount.tx++;
|
||||
port->x_char = 0;
|
||||
} else if (tx_count && msm_port->is_uartdm) {
|
||||
reset_dm_count(port, tx_count);
|
||||
}
|
||||
|
||||
if (msm_port->is_uartdm)
|
||||
reset_dm_count(port);
|
||||
while (tf_pointer < tx_count) {
|
||||
int i;
|
||||
char buf[4] = { 0 };
|
||||
unsigned int *bf = (unsigned int *)&buf;
|
||||
|
||||
while (msm_read(port, UART_SR) & UART_SR_TX_READY) {
|
||||
if (uart_circ_empty(xmit)) {
|
||||
/* disable tx interrupts */
|
||||
msm_port->imr &= ~UART_IMR_TXLEV;
|
||||
msm_write(port, msm_port->imr, UART_IMR);
|
||||
if (!(msm_read(port, UART_SR) & UART_SR_TX_READY))
|
||||
break;
|
||||
}
|
||||
msm_write(port, xmit->buf[xmit->tail],
|
||||
msm_port->is_uartdm ? UARTDM_TF : UART_TF);
|
||||
|
||||
if (msm_port->is_uartdm)
|
||||
reset_dm_count(port);
|
||||
num_chars = min(tx_count - tf_pointer,
|
||||
(unsigned int)sizeof(buf));
|
||||
else
|
||||
num_chars = 1;
|
||||
|
||||
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
|
||||
port->icount.tx++;
|
||||
sent_tx = 1;
|
||||
for (i = 0; i < num_chars; i++) {
|
||||
buf[i] = xmit->buf[xmit->tail + i];
|
||||
port->icount.tx++;
|
||||
}
|
||||
|
||||
msm_write(port, *bf, msm_port->is_uartdm ? UARTDM_TF : UART_TF);
|
||||
xmit->tail = (xmit->tail + num_chars) & (UART_XMIT_SIZE - 1);
|
||||
tf_pointer += num_chars;
|
||||
}
|
||||
|
||||
/* disable tx interrupts if nothing more to send */
|
||||
if (uart_circ_empty(xmit))
|
||||
msm_stop_tx(port);
|
||||
|
||||
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
|
||||
uart_write_wakeup(port);
|
||||
}
|
||||
|
@ -295,7 +318,7 @@ static void msm_reset(struct uart_port *port)
|
|||
msm_write(port, UART_CR_CMD_SET_RFR, UART_CR);
|
||||
}
|
||||
|
||||
void msm_set_mctrl(struct uart_port *port, unsigned int mctrl)
|
||||
static void msm_set_mctrl(struct uart_port *port, unsigned int mctrl)
|
||||
{
|
||||
unsigned int mr;
|
||||
mr = msm_read(port, UART_MR1);
|
||||
|
@ -318,70 +341,60 @@ static void msm_break_ctl(struct uart_port *port, int break_ctl)
|
|||
msm_write(port, UART_CR_CMD_STOP_BREAK, UART_CR);
|
||||
}
|
||||
|
||||
struct msm_baud_map {
|
||||
u16 divisor;
|
||||
u8 code;
|
||||
u8 rxstale;
|
||||
};
|
||||
|
||||
static const struct msm_baud_map *
|
||||
msm_find_best_baud(struct uart_port *port, unsigned int baud)
|
||||
{
|
||||
unsigned int i, divisor;
|
||||
const struct msm_baud_map *entry;
|
||||
static const struct msm_baud_map table[] = {
|
||||
{ 1536, 0x00, 1 },
|
||||
{ 768, 0x11, 1 },
|
||||
{ 384, 0x22, 1 },
|
||||
{ 192, 0x33, 1 },
|
||||
{ 96, 0x44, 1 },
|
||||
{ 48, 0x55, 1 },
|
||||
{ 32, 0x66, 1 },
|
||||
{ 24, 0x77, 1 },
|
||||
{ 16, 0x88, 1 },
|
||||
{ 12, 0x99, 6 },
|
||||
{ 8, 0xaa, 6 },
|
||||
{ 6, 0xbb, 6 },
|
||||
{ 4, 0xcc, 6 },
|
||||
{ 3, 0xdd, 8 },
|
||||
{ 2, 0xee, 16 },
|
||||
{ 1, 0xff, 31 },
|
||||
};
|
||||
|
||||
divisor = uart_get_divisor(port, baud);
|
||||
|
||||
for (i = 0, entry = table; i < ARRAY_SIZE(table); i++, entry++)
|
||||
if (entry->divisor <= divisor)
|
||||
break;
|
||||
|
||||
return entry; /* Default to smallest divider */
|
||||
}
|
||||
|
||||
static int msm_set_baud_rate(struct uart_port *port, unsigned int baud)
|
||||
{
|
||||
unsigned int baud_code, rxstale, watermark;
|
||||
unsigned int rxstale, watermark;
|
||||
struct msm_port *msm_port = UART_TO_MSM(port);
|
||||
const struct msm_baud_map *entry;
|
||||
|
||||
switch (baud) {
|
||||
case 300:
|
||||
baud_code = UART_CSR_300;
|
||||
rxstale = 1;
|
||||
break;
|
||||
case 600:
|
||||
baud_code = UART_CSR_600;
|
||||
rxstale = 1;
|
||||
break;
|
||||
case 1200:
|
||||
baud_code = UART_CSR_1200;
|
||||
rxstale = 1;
|
||||
break;
|
||||
case 2400:
|
||||
baud_code = UART_CSR_2400;
|
||||
rxstale = 1;
|
||||
break;
|
||||
case 4800:
|
||||
baud_code = UART_CSR_4800;
|
||||
rxstale = 1;
|
||||
break;
|
||||
case 9600:
|
||||
baud_code = UART_CSR_9600;
|
||||
rxstale = 2;
|
||||
break;
|
||||
case 14400:
|
||||
baud_code = UART_CSR_14400;
|
||||
rxstale = 3;
|
||||
break;
|
||||
case 19200:
|
||||
baud_code = UART_CSR_19200;
|
||||
rxstale = 4;
|
||||
break;
|
||||
case 28800:
|
||||
baud_code = UART_CSR_28800;
|
||||
rxstale = 6;
|
||||
break;
|
||||
case 38400:
|
||||
baud_code = UART_CSR_38400;
|
||||
rxstale = 8;
|
||||
break;
|
||||
case 57600:
|
||||
baud_code = UART_CSR_57600;
|
||||
rxstale = 16;
|
||||
break;
|
||||
case 115200:
|
||||
default:
|
||||
baud_code = UART_CSR_115200;
|
||||
baud = 115200;
|
||||
rxstale = 31;
|
||||
break;
|
||||
}
|
||||
entry = msm_find_best_baud(port, baud);
|
||||
|
||||
if (msm_port->is_uartdm)
|
||||
msm_write(port, UART_CR_CMD_RESET_RX, UART_CR);
|
||||
|
||||
msm_write(port, baud_code, UART_CSR);
|
||||
msm_write(port, entry->code, UART_CSR);
|
||||
|
||||
/* RX stale watermark */
|
||||
rxstale = entry->rxstale;
|
||||
watermark = UART_IPR_STALE_LSB & rxstale;
|
||||
watermark |= UART_IPR_RXSTALE_LAST;
|
||||
watermark |= UART_IPR_STALE_TIMEOUT_MSB & (rxstale << 2);
|
||||
|
@ -409,8 +422,7 @@ static void msm_init_clock(struct uart_port *port)
|
|||
struct msm_port *msm_port = UART_TO_MSM(port);
|
||||
|
||||
clk_prepare_enable(msm_port->clk);
|
||||
if (!IS_ERR(msm_port->pclk))
|
||||
clk_prepare_enable(msm_port->pclk);
|
||||
clk_prepare_enable(msm_port->pclk);
|
||||
msm_serial_set_mnd_regs(port);
|
||||
}
|
||||
|
||||
|
@ -589,12 +601,10 @@ static void msm_release_port(struct uart_port *port)
|
|||
port->membase = NULL;
|
||||
|
||||
if (msm_port->gsbi_base) {
|
||||
iowrite32(GSBI_PROTOCOL_IDLE, msm_port->gsbi_base +
|
||||
GSBI_CONTROL);
|
||||
|
||||
gsbi_resource = platform_get_resource(pdev,
|
||||
IORESOURCE_MEM, 1);
|
||||
writel_relaxed(GSBI_PROTOCOL_IDLE,
|
||||
msm_port->gsbi_base + GSBI_CONTROL);
|
||||
|
||||
gsbi_resource = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
||||
if (unlikely(!gsbi_resource))
|
||||
return;
|
||||
|
||||
|
@ -637,7 +647,7 @@ static int msm_request_port(struct uart_port *port)
|
|||
if (!request_mem_region(gsbi_resource->start, size,
|
||||
"msm_serial")) {
|
||||
ret = -EBUSY;
|
||||
goto fail_release_port;
|
||||
goto fail_release_port_membase;
|
||||
}
|
||||
|
||||
msm_port->gsbi_base = ioremap(gsbi_resource->start, size);
|
||||
|
@ -651,6 +661,8 @@ static int msm_request_port(struct uart_port *port)
|
|||
|
||||
fail_release_gsbi:
|
||||
release_mem_region(gsbi_resource->start, size);
|
||||
fail_release_port_membase:
|
||||
iounmap(port->membase);
|
||||
fail_release_port:
|
||||
release_mem_region(port->mapbase, size);
|
||||
return ret;
|
||||
|
@ -666,10 +678,9 @@ static void msm_config_port(struct uart_port *port, int flags)
|
|||
if (ret)
|
||||
return;
|
||||
}
|
||||
|
||||
if (msm_port->is_uartdm)
|
||||
iowrite32(GSBI_PROTOCOL_UART, msm_port->gsbi_base +
|
||||
GSBI_CONTROL);
|
||||
if (msm_port->gsbi_base)
|
||||
writel_relaxed(GSBI_PROTOCOL_UART,
|
||||
msm_port->gsbi_base + GSBI_CONTROL);
|
||||
}
|
||||
|
||||
static int msm_verify_port(struct uart_port *port, struct serial_struct *ser)
|
||||
|
@ -689,13 +700,11 @@ static void msm_power(struct uart_port *port, unsigned int state,
|
|||
switch (state) {
|
||||
case 0:
|
||||
clk_prepare_enable(msm_port->clk);
|
||||
if (!IS_ERR(msm_port->pclk))
|
||||
clk_prepare_enable(msm_port->pclk);
|
||||
clk_prepare_enable(msm_port->pclk);
|
||||
break;
|
||||
case 3:
|
||||
clk_disable_unprepare(msm_port->clk);
|
||||
if (!IS_ERR(msm_port->pclk))
|
||||
clk_disable_unprepare(msm_port->pclk);
|
||||
clk_disable_unprepare(msm_port->pclk);
|
||||
break;
|
||||
default:
|
||||
printk(KERN_ERR "msm_serial: Unknown PM state %d\n", state);
|
||||
|
@ -760,32 +769,63 @@ static inline struct uart_port *get_port_from_line(unsigned int line)
|
|||
}
|
||||
|
||||
#ifdef CONFIG_SERIAL_MSM_CONSOLE
|
||||
|
||||
static void msm_console_putchar(struct uart_port *port, int c)
|
||||
{
|
||||
struct msm_port *msm_port = UART_TO_MSM(port);
|
||||
|
||||
if (msm_port->is_uartdm)
|
||||
reset_dm_count(port);
|
||||
|
||||
while (!(msm_read(port, UART_SR) & UART_SR_TX_READY))
|
||||
;
|
||||
msm_write(port, c, msm_port->is_uartdm ? UARTDM_TF : UART_TF);
|
||||
}
|
||||
|
||||
static void msm_console_write(struct console *co, const char *s,
|
||||
unsigned int count)
|
||||
{
|
||||
int i;
|
||||
struct uart_port *port;
|
||||
struct msm_port *msm_port;
|
||||
int num_newlines = 0;
|
||||
bool replaced = false;
|
||||
|
||||
BUG_ON(co->index < 0 || co->index >= UART_NR);
|
||||
|
||||
port = get_port_from_line(co->index);
|
||||
msm_port = UART_TO_MSM(port);
|
||||
|
||||
/* Account for newlines that will get a carriage return added */
|
||||
for (i = 0; i < count; i++)
|
||||
if (s[i] == '\n')
|
||||
num_newlines++;
|
||||
count += num_newlines;
|
||||
|
||||
spin_lock(&port->lock);
|
||||
uart_console_write(port, s, count, msm_console_putchar);
|
||||
if (msm_port->is_uartdm)
|
||||
reset_dm_count(port, count);
|
||||
|
||||
i = 0;
|
||||
while (i < count) {
|
||||
int j;
|
||||
unsigned int num_chars;
|
||||
char buf[4] = { 0 };
|
||||
unsigned int *bf = (unsigned int *)&buf;
|
||||
|
||||
if (msm_port->is_uartdm)
|
||||
num_chars = min(count - i, (unsigned int)sizeof(buf));
|
||||
else
|
||||
num_chars = 1;
|
||||
|
||||
for (j = 0; j < num_chars; j++) {
|
||||
char c = *s;
|
||||
|
||||
if (c == '\n' && !replaced) {
|
||||
buf[j] = '\r';
|
||||
j++;
|
||||
replaced = true;
|
||||
}
|
||||
if (j < num_chars) {
|
||||
buf[j] = c;
|
||||
s++;
|
||||
replaced = false;
|
||||
}
|
||||
}
|
||||
|
||||
while (!(msm_read(port, UART_SR) & UART_SR_TX_READY))
|
||||
cpu_relax();
|
||||
|
||||
msm_write(port, *bf, msm_port->is_uartdm ? UARTDM_TF : UART_TF);
|
||||
i += num_chars;
|
||||
}
|
||||
spin_unlock(&port->lock);
|
||||
}
|
||||
|
||||
|
@ -859,6 +899,11 @@ static struct uart_driver msm_uart_driver = {
|
|||
|
||||
static atomic_t msm_uart_next_id = ATOMIC_INIT(0);
|
||||
|
||||
static const struct of_device_id msm_uartdm_table[] = {
|
||||
{ .compatible = "qcom,msm-uartdm" },
|
||||
{ }
|
||||
};
|
||||
|
||||
static int __init msm_serial_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct msm_port *msm_port;
|
||||
|
@ -878,23 +923,17 @@ static int __init msm_serial_probe(struct platform_device *pdev)
|
|||
port->dev = &pdev->dev;
|
||||
msm_port = UART_TO_MSM(port);
|
||||
|
||||
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
|
||||
if (of_match_device(msm_uartdm_table, &pdev->dev))
|
||||
msm_port->is_uartdm = 1;
|
||||
else
|
||||
msm_port->is_uartdm = 0;
|
||||
|
||||
if (msm_port->is_uartdm) {
|
||||
msm_port->clk = devm_clk_get(&pdev->dev, "gsbi_uart_clk");
|
||||
msm_port->pclk = devm_clk_get(&pdev->dev, "gsbi_pclk");
|
||||
} else {
|
||||
msm_port->clk = devm_clk_get(&pdev->dev, "uart_clk");
|
||||
msm_port->pclk = ERR_PTR(-ENOENT);
|
||||
}
|
||||
|
||||
msm_port->clk = devm_clk_get(&pdev->dev, "core");
|
||||
if (IS_ERR(msm_port->clk))
|
||||
return PTR_ERR(msm_port->clk);
|
||||
|
||||
if (msm_port->is_uartdm) {
|
||||
msm_port->pclk = devm_clk_get(&pdev->dev, "iface");
|
||||
if (IS_ERR(msm_port->pclk))
|
||||
return PTR_ERR(msm_port->pclk);
|
||||
|
||||
|
@ -931,6 +970,7 @@ static int msm_serial_remove(struct platform_device *pdev)
|
|||
|
||||
static struct of_device_id msm_match_table[] = {
|
||||
{ .compatible = "qcom,msm-uart" },
|
||||
{ .compatible = "qcom,msm-uartdm" },
|
||||
{}
|
||||
};
|
||||
|
||||
|
|
|
@ -38,19 +38,7 @@
|
|||
#define UART_MR2_PARITY_MODE_SPACE 0x3
|
||||
#define UART_MR2_PARITY_MODE 0x3
|
||||
|
||||
#define UART_CSR 0x0008
|
||||
#define UART_CSR_115200 0xFF
|
||||
#define UART_CSR_57600 0xEE
|
||||
#define UART_CSR_38400 0xDD
|
||||
#define UART_CSR_28800 0xCC
|
||||
#define UART_CSR_19200 0xBB
|
||||
#define UART_CSR_14400 0xAA
|
||||
#define UART_CSR_9600 0x99
|
||||
#define UART_CSR_4800 0x77
|
||||
#define UART_CSR_2400 0x55
|
||||
#define UART_CSR_1200 0x44
|
||||
#define UART_CSR_600 0x33
|
||||
#define UART_CSR_300 0x22
|
||||
#define UART_CSR 0x0008
|
||||
|
||||
#define UART_TF 0x000C
|
||||
#define UARTDM_TF 0x0070
|
||||
|
@ -71,6 +59,7 @@
|
|||
#define UART_CR_CMD_RESET_RFR (14 << 4)
|
||||
#define UART_CR_CMD_PROTECTION_EN (16 << 4)
|
||||
#define UART_CR_CMD_STALE_EVENT_ENABLE (80 << 4)
|
||||
#define UART_CR_CMD_RESET_TX_READY (3 << 8)
|
||||
#define UART_CR_TX_DISABLE (1 << 3)
|
||||
#define UART_CR_TX_ENABLE (1 << 2)
|
||||
#define UART_CR_RX_DISABLE (1 << 1)
|
||||
|
@ -151,6 +140,7 @@ static inline void msm_serial_set_mnd_regs_tcxo(struct uart_port *port)
|
|||
msm_write(port, 0xF1, UART_NREG);
|
||||
msm_write(port, 0x0F, UART_DREG);
|
||||
msm_write(port, 0x1A, UART_MNDREG);
|
||||
port->uartclk = 1843200;
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -162,6 +152,7 @@ static inline void msm_serial_set_mnd_regs_tcxoby4(struct uart_port *port)
|
|||
msm_write(port, 0xF6, UART_NREG);
|
||||
msm_write(port, 0x0F, UART_DREG);
|
||||
msm_write(port, 0x0A, UART_MNDREG);
|
||||
port->uartclk = 1843200;
|
||||
}
|
||||
|
||||
static inline
|
||||
|
@ -169,7 +160,7 @@ void msm_serial_set_mnd_regs_from_uartclk(struct uart_port *port)
|
|||
{
|
||||
if (port->uartclk == 19200000)
|
||||
msm_serial_set_mnd_regs_tcxo(port);
|
||||
else
|
||||
else if (port->uartclk == 4800000)
|
||||
msm_serial_set_mnd_regs_tcxoby4(port);
|
||||
}
|
||||
|
||||
|
|
|
@ -1618,7 +1618,7 @@ static int msm_hs_probe(struct platform_device *pdev)
|
|||
struct msm_hs_port *msm_uport;
|
||||
struct resource *resource;
|
||||
const struct msm_serial_hs_platform_data *pdata =
|
||||
pdev->dev.platform_data;
|
||||
dev_get_platdata(&pdev->dev);
|
||||
|
||||
if (pdev->id < 0 || pdev->id >= UARTDM_NR) {
|
||||
printk(KERN_ERR "Invalid plaform device ID = %d\n", pdev->id);
|
||||
|
|
|
@ -32,7 +32,6 @@
|
|||
#include <linux/clk.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/dmaengine.h>
|
||||
|
@ -134,10 +133,10 @@ enum mxs_auart_type {
|
|||
struct mxs_auart_port {
|
||||
struct uart_port port;
|
||||
|
||||
#define MXS_AUART_DMA_CONFIG 0x1
|
||||
#define MXS_AUART_DMA_ENABLED 0x2
|
||||
#define MXS_AUART_DMA_TX_SYNC 2 /* bit 2 */
|
||||
#define MXS_AUART_DMA_RX_READY 3 /* bit 3 */
|
||||
#define MXS_AUART_RTSCTS 4 /* bit 4 */
|
||||
unsigned long flags;
|
||||
unsigned int ctrl;
|
||||
enum mxs_auart_type devtype;
|
||||
|
@ -640,7 +639,8 @@ static void mxs_auart_settermios(struct uart_port *u,
|
|||
* we can only implement the DMA support for auart
|
||||
* in mx28.
|
||||
*/
|
||||
if (is_imx28_auart(s) && (s->flags & MXS_AUART_DMA_CONFIG)) {
|
||||
if (is_imx28_auart(s)
|
||||
&& test_bit(MXS_AUART_RTSCTS, &s->flags)) {
|
||||
if (!mxs_auart_dma_init(s))
|
||||
/* enable DMA tranfer */
|
||||
ctrl2 |= AUART_CTRL2_TXDMAE | AUART_CTRL2_RXDMAE
|
||||
|
@ -1008,7 +1008,8 @@ static int serial_mxs_probe_dt(struct mxs_auart_port *s,
|
|||
}
|
||||
s->port.line = ret;
|
||||
|
||||
s->flags |= MXS_AUART_DMA_CONFIG;
|
||||
if (of_get_property(np, "fsl,uart-has-rtscts", NULL))
|
||||
set_bit(MXS_AUART_RTSCTS, &s->flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -1021,7 +1022,6 @@ static int mxs_auart_probe(struct platform_device *pdev)
|
|||
u32 version;
|
||||
int ret = 0;
|
||||
struct resource *r;
|
||||
struct pinctrl *pinctrl;
|
||||
|
||||
s = kzalloc(sizeof(struct mxs_auart_port), GFP_KERNEL);
|
||||
if (!s) {
|
||||
|
@ -1035,12 +1035,6 @@ static int mxs_auart_probe(struct platform_device *pdev)
|
|||
else if (ret < 0)
|
||||
goto out_free;
|
||||
|
||||
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
|
||||
if (IS_ERR(pinctrl)) {
|
||||
ret = PTR_ERR(pinctrl);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
if (of_id) {
|
||||
pdev->id_entry = of_id->data;
|
||||
s->devtype = pdev->id_entry->driver_data;
|
||||
|
|
|
@ -196,7 +196,7 @@ static void netx_txint(struct uart_port *port)
|
|||
uart_write_wakeup(port);
|
||||
}
|
||||
|
||||
static void netx_rxint(struct uart_port *port)
|
||||
static void netx_rxint(struct uart_port *port, unsigned long *flags)
|
||||
{
|
||||
unsigned char rx, flg, status;
|
||||
|
||||
|
@ -236,7 +236,9 @@ static void netx_rxint(struct uart_port *port)
|
|||
uart_insert_char(port, status, SR_OE, rx, flg);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&port->lock, *flags);
|
||||
tty_flip_buffer_push(&port->state->port);
|
||||
spin_lock_irqsave(&port->lock, *flags);
|
||||
}
|
||||
|
||||
static irqreturn_t netx_int(int irq, void *dev_id)
|
||||
|
@ -250,7 +252,7 @@ static irqreturn_t netx_int(int irq, void *dev_id)
|
|||
status = readl(port->membase + UART_IIR) & IIR_MASK;
|
||||
while (status) {
|
||||
if (status & IIR_RIS)
|
||||
netx_rxint(port);
|
||||
netx_rxint(port, &flags);
|
||||
if (status & IIR_TIS)
|
||||
netx_txint(port);
|
||||
if (status & IIR_MIS) {
|
||||
|
@ -693,8 +695,6 @@ static int serial_netx_remove(struct platform_device *pdev)
|
|||
{
|
||||
struct netx_port *sport = platform_get_drvdata(pdev);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
if (sport)
|
||||
uart_remove_one_port(&netx_reg, &sport->port);
|
||||
|
||||
|
|
|
@ -149,7 +149,10 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
|
|||
tty_insert_flip_char(port, ch, TTY_NORMAL);
|
||||
} while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
|
||||
|
||||
spin_unlock(&up->port.lock);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock(&up->port.lock);
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
|
||||
/* clear interrupt */
|
||||
|
|
|
@ -40,9 +40,11 @@
|
|||
#include <linux/pm_runtime.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
#include <linux/of_gpio.h>
|
||||
#include <linux/platform_data/serial-omap.h>
|
||||
|
||||
#include <dt-bindings/gpio/gpio.h>
|
||||
|
||||
#define OMAP_MAX_HSUART_PORTS 6
|
||||
|
||||
#define UART_BUILD_REVISION(x, y) (((x) << 8) | (y))
|
||||
|
@ -52,6 +54,11 @@
|
|||
#define OMAP_UART_REV_52 0x0502
|
||||
#define OMAP_UART_REV_63 0x0603
|
||||
|
||||
#define OMAP_UART_TX_WAKEUP_EN BIT(7)
|
||||
|
||||
/* Feature flags */
|
||||
#define OMAP_UART_WER_HAS_TX_WAKEUP BIT(0)
|
||||
|
||||
#define UART_ERRATA_i202_MDR1_ACCESS BIT(0)
|
||||
#define UART_ERRATA_i291_DMA_FORCEIDLE BIT(1)
|
||||
|
||||
|
@ -137,6 +144,7 @@ struct uart_omap_port {
|
|||
unsigned char dlh;
|
||||
unsigned char mdr1;
|
||||
unsigned char scr;
|
||||
unsigned char wer;
|
||||
|
||||
int use_dma;
|
||||
/*
|
||||
|
@ -151,16 +159,19 @@ struct uart_omap_port {
|
|||
int context_loss_cnt;
|
||||
u32 errata;
|
||||
u8 wakeups_enabled;
|
||||
u32 features;
|
||||
|
||||
int DTR_gpio;
|
||||
int DTR_inverted;
|
||||
int DTR_active;
|
||||
|
||||
struct serial_rs485 rs485;
|
||||
int rts_gpio;
|
||||
|
||||
struct pm_qos_request pm_qos_request;
|
||||
u32 latency;
|
||||
u32 calc_latency;
|
||||
struct work_struct qos_work;
|
||||
struct pinctrl *pins;
|
||||
bool is_suspending;
|
||||
};
|
||||
|
||||
|
@ -195,7 +206,7 @@ static inline void serial_omap_clear_fifos(struct uart_omap_port *up)
|
|||
|
||||
static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
|
||||
{
|
||||
struct omap_uart_port_info *pdata = up->dev->platform_data;
|
||||
struct omap_uart_port_info *pdata = dev_get_platdata(up->dev);
|
||||
|
||||
if (!pdata || !pdata->get_context_loss_count)
|
||||
return -EINVAL;
|
||||
|
@ -205,7 +216,7 @@ static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
|
|||
|
||||
static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
|
||||
{
|
||||
struct omap_uart_port_info *pdata = up->dev->platform_data;
|
||||
struct omap_uart_port_info *pdata = dev_get_platdata(up->dev);
|
||||
|
||||
if (!pdata || !pdata->enable_wakeup)
|
||||
return;
|
||||
|
@ -272,13 +283,42 @@ static void serial_omap_enable_ms(struct uart_port *port)
|
|||
static void serial_omap_stop_tx(struct uart_port *port)
|
||||
{
|
||||
struct uart_omap_port *up = to_uart_omap_port(port);
|
||||
struct circ_buf *xmit = &up->port.state->xmit;
|
||||
int res;
|
||||
|
||||
pm_runtime_get_sync(up->dev);
|
||||
|
||||
/* handle rs485 */
|
||||
if (up->rs485.flags & SER_RS485_ENABLED) {
|
||||
/* do nothing if current tx not yet completed */
|
||||
res = serial_in(up, UART_LSR) & UART_LSR_TEMT;
|
||||
if (!res)
|
||||
return;
|
||||
|
||||
/* if there's no more data to send, turn off rts */
|
||||
if (uart_circ_empty(xmit)) {
|
||||
/* if rts not already disabled */
|
||||
res = (up->rs485.flags & SER_RS485_RTS_AFTER_SEND) ? 1 : 0;
|
||||
if (gpio_get_value(up->rts_gpio) != res) {
|
||||
if (up->rs485.delay_rts_after_send > 0) {
|
||||
mdelay(up->rs485.delay_rts_after_send);
|
||||
}
|
||||
gpio_set_value(up->rts_gpio, res);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (up->ier & UART_IER_THRI) {
|
||||
up->ier &= ~UART_IER_THRI;
|
||||
serial_out(up, UART_IER, up->ier);
|
||||
}
|
||||
|
||||
if ((up->rs485.flags & SER_RS485_ENABLED) &&
|
||||
!(up->rs485.flags & SER_RS485_RX_DURING_TX)) {
|
||||
up->ier = UART_IER_RLSI | UART_IER_RDI;
|
||||
serial_out(up, UART_IER, up->ier);
|
||||
}
|
||||
|
||||
pm_runtime_mark_last_busy(up->dev);
|
||||
pm_runtime_put_autosuspend(up->dev);
|
||||
}
|
||||
|
@ -340,8 +380,26 @@ static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up)
|
|||
static void serial_omap_start_tx(struct uart_port *port)
|
||||
{
|
||||
struct uart_omap_port *up = to_uart_omap_port(port);
|
||||
int res;
|
||||
|
||||
pm_runtime_get_sync(up->dev);
|
||||
|
||||
/* handle rs485 */
|
||||
if (up->rs485.flags & SER_RS485_ENABLED) {
|
||||
/* if rts not already enabled */
|
||||
res = (up->rs485.flags & SER_RS485_RTS_ON_SEND) ? 1 : 0;
|
||||
if (gpio_get_value(up->rts_gpio) != res) {
|
||||
gpio_set_value(up->rts_gpio, res);
|
||||
if (up->rs485.delay_rts_before_send > 0) {
|
||||
mdelay(up->rs485.delay_rts_before_send);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ((up->rs485.flags & SER_RS485_ENABLED) &&
|
||||
!(up->rs485.flags & SER_RS485_RX_DURING_TX))
|
||||
serial_omap_stop_rx(port);
|
||||
|
||||
serial_omap_enable_ier_thri(up);
|
||||
pm_runtime_mark_last_busy(up->dev);
|
||||
pm_runtime_put_autosuspend(up->dev);
|
||||
|
@ -683,7 +741,11 @@ static int serial_omap_startup(struct uart_port *port)
|
|||
serial_out(up, UART_IER, up->ier);
|
||||
|
||||
/* Enable module level wake up */
|
||||
serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP);
|
||||
up->wer = OMAP_UART_WER_MOD_WKUP;
|
||||
if (up->features & OMAP_UART_WER_HAS_TX_WAKEUP)
|
||||
up->wer |= OMAP_UART_TX_WAKEUP_EN;
|
||||
|
||||
serial_out(up, UART_OMAP_WER, up->wer);
|
||||
|
||||
pm_runtime_mark_last_busy(up->dev);
|
||||
pm_runtime_put_autosuspend(up->dev);
|
||||
|
@ -1254,6 +1316,76 @@ static inline void serial_omap_add_console_port(struct uart_omap_port *up)
|
|||
|
||||
#endif
|
||||
|
||||
/* Enable or disable the rs485 support */
|
||||
static void
|
||||
serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
|
||||
{
|
||||
struct uart_omap_port *up = to_uart_omap_port(port);
|
||||
unsigned long flags;
|
||||
unsigned int mode;
|
||||
int val;
|
||||
|
||||
pm_runtime_get_sync(up->dev);
|
||||
spin_lock_irqsave(&up->port.lock, flags);
|
||||
|
||||
/* Disable interrupts from this port */
|
||||
mode = up->ier;
|
||||
up->ier = 0;
|
||||
serial_out(up, UART_IER, 0);
|
||||
|
||||
/* store new config */
|
||||
up->rs485 = *rs485conf;
|
||||
|
||||
/*
|
||||
* Just as a precaution, only allow rs485
|
||||
* to be enabled if the gpio pin is valid
|
||||
*/
|
||||
if (gpio_is_valid(up->rts_gpio)) {
|
||||
/* enable / disable rts */
|
||||
val = (up->rs485.flags & SER_RS485_ENABLED) ?
|
||||
SER_RS485_RTS_AFTER_SEND : SER_RS485_RTS_ON_SEND;
|
||||
val = (up->rs485.flags & val) ? 1 : 0;
|
||||
gpio_set_value(up->rts_gpio, val);
|
||||
} else
|
||||
up->rs485.flags &= ~SER_RS485_ENABLED;
|
||||
|
||||
/* Enable interrupts */
|
||||
up->ier = mode;
|
||||
serial_out(up, UART_IER, up->ier);
|
||||
|
||||
spin_unlock_irqrestore(&up->port.lock, flags);
|
||||
pm_runtime_mark_last_busy(up->dev);
|
||||
pm_runtime_put_autosuspend(up->dev);
|
||||
}
|
||||
|
||||
static int
|
||||
serial_omap_ioctl(struct uart_port *port, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
struct serial_rs485 rs485conf;
|
||||
|
||||
switch (cmd) {
|
||||
case TIOCSRS485:
|
||||
if (copy_from_user(&rs485conf, (struct serial_rs485 *) arg,
|
||||
sizeof(rs485conf)))
|
||||
return -EFAULT;
|
||||
|
||||
serial_omap_config_rs485(port, &rs485conf);
|
||||
break;
|
||||
|
||||
case TIOCGRS485:
|
||||
if (copy_to_user((struct serial_rs485 *) arg,
|
||||
&(to_uart_omap_port(port)->rs485),
|
||||
sizeof(rs485conf)))
|
||||
return -EFAULT;
|
||||
break;
|
||||
|
||||
default:
|
||||
return -ENOIOCTLCMD;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static struct uart_ops serial_omap_pops = {
|
||||
.tx_empty = serial_omap_tx_empty,
|
||||
.set_mctrl = serial_omap_set_mctrl,
|
||||
|
@ -1275,6 +1407,7 @@ static struct uart_ops serial_omap_pops = {
|
|||
.request_port = serial_omap_request_port,
|
||||
.config_port = serial_omap_config_port,
|
||||
.verify_port = serial_omap_verify_port,
|
||||
.ioctl = serial_omap_ioctl,
|
||||
#ifdef CONFIG_CONSOLE_POLL
|
||||
.poll_put_char = serial_omap_poll_put_char,
|
||||
.poll_get_char = serial_omap_poll_get_char,
|
||||
|
@ -1334,7 +1467,7 @@ static void omap_serial_fill_features_erratas(struct uart_omap_port *up)
|
|||
u32 mvr, scheme;
|
||||
u16 revision, major, minor;
|
||||
|
||||
mvr = serial_in(up, UART_OMAP_MVER);
|
||||
mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift));
|
||||
|
||||
/* Check revision register scheme */
|
||||
scheme = mvr >> OMAP_UART_MVR_SCHEME_SHIFT;
|
||||
|
@ -1373,9 +1506,11 @@ static void omap_serial_fill_features_erratas(struct uart_omap_port *up)
|
|||
case OMAP_UART_REV_52:
|
||||
up->errata |= (UART_ERRATA_i202_MDR1_ACCESS |
|
||||
UART_ERRATA_i291_DMA_FORCEIDLE);
|
||||
up->features |= OMAP_UART_WER_HAS_TX_WAKEUP;
|
||||
break;
|
||||
case OMAP_UART_REV_63:
|
||||
up->errata |= UART_ERRATA_i202_MDR1_ACCESS;
|
||||
up->features |= OMAP_UART_WER_HAS_TX_WAKEUP;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
@ -1395,15 +1530,64 @@ static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
|
|||
return omap_up_info;
|
||||
}
|
||||
|
||||
static int serial_omap_probe_rs485(struct uart_omap_port *up,
|
||||
struct device_node *np)
|
||||
{
|
||||
struct serial_rs485 *rs485conf = &up->rs485;
|
||||
u32 rs485_delay[2];
|
||||
enum of_gpio_flags flags;
|
||||
int ret;
|
||||
|
||||
rs485conf->flags = 0;
|
||||
up->rts_gpio = -EINVAL;
|
||||
|
||||
if (!np)
|
||||
return 0;
|
||||
|
||||
if (of_property_read_bool(np, "rs485-rts-active-high"))
|
||||
rs485conf->flags |= SER_RS485_RTS_ON_SEND;
|
||||
else
|
||||
rs485conf->flags |= SER_RS485_RTS_AFTER_SEND;
|
||||
|
||||
/* check for tx enable gpio */
|
||||
up->rts_gpio = of_get_named_gpio_flags(np, "rts-gpio", 0, &flags);
|
||||
if (gpio_is_valid(up->rts_gpio)) {
|
||||
ret = gpio_request(up->rts_gpio, "omap-serial");
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ret = gpio_direction_output(up->rts_gpio,
|
||||
flags & SER_RS485_RTS_AFTER_SEND);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
} else
|
||||
up->rts_gpio = -EINVAL;
|
||||
|
||||
if (of_property_read_u32_array(np, "rs485-rts-delay",
|
||||
rs485_delay, 2) == 0) {
|
||||
rs485conf->delay_rts_before_send = rs485_delay[0];
|
||||
rs485conf->delay_rts_after_send = rs485_delay[1];
|
||||
}
|
||||
|
||||
if (of_property_read_bool(np, "rs485-rx-during-tx"))
|
||||
rs485conf->flags |= SER_RS485_RX_DURING_TX;
|
||||
|
||||
if (of_property_read_bool(np, "linux,rs485-enabled-at-boot-time"))
|
||||
rs485conf->flags |= SER_RS485_ENABLED;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int serial_omap_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct uart_omap_port *up;
|
||||
struct resource *mem, *irq;
|
||||
struct omap_uart_port_info *omap_up_info = pdev->dev.platform_data;
|
||||
struct omap_uart_port_info *omap_up_info = dev_get_platdata(&pdev->dev);
|
||||
int ret;
|
||||
|
||||
if (pdev->dev.of_node)
|
||||
if (pdev->dev.of_node) {
|
||||
omap_up_info = of_get_uart_port_info(&pdev->dev);
|
||||
pdev->dev.platform_data = omap_up_info;
|
||||
}
|
||||
|
||||
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!mem) {
|
||||
|
@ -1468,12 +1652,9 @@ static int serial_omap_probe(struct platform_device *pdev)
|
|||
goto err_port_line;
|
||||
}
|
||||
|
||||
up->pins = devm_pinctrl_get_select_default(&pdev->dev);
|
||||
if (IS_ERR(up->pins)) {
|
||||
dev_warn(&pdev->dev, "did not get pins for uart%i error: %li\n",
|
||||
up->port.line, PTR_ERR(up->pins));
|
||||
up->pins = NULL;
|
||||
}
|
||||
ret = serial_omap_probe_rs485(up, pdev->dev.of_node);
|
||||
if (ret < 0)
|
||||
goto err_rs485;
|
||||
|
||||
sprintf(up->name, "OMAP UART%d", up->port.line);
|
||||
up->port.mapbase = mem->start;
|
||||
|
@ -1501,7 +1682,6 @@ static int serial_omap_probe(struct platform_device *pdev)
|
|||
INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
|
||||
|
||||
platform_set_drvdata(pdev, up);
|
||||
pm_runtime_enable(&pdev->dev);
|
||||
if (omap_up_info->autosuspend_timeout == 0)
|
||||
omap_up_info->autosuspend_timeout = -1;
|
||||
device_init_wakeup(up->dev, true);
|
||||
|
@ -1510,6 +1690,8 @@ static int serial_omap_probe(struct platform_device *pdev)
|
|||
omap_up_info->autosuspend_timeout);
|
||||
|
||||
pm_runtime_irq_safe(&pdev->dev);
|
||||
pm_runtime_enable(&pdev->dev);
|
||||
|
||||
pm_runtime_get_sync(&pdev->dev);
|
||||
|
||||
omap_serial_fill_features_erratas(up);
|
||||
|
@ -1529,6 +1711,7 @@ err_add_port:
|
|||
pm_runtime_put(&pdev->dev);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
err_ioremap:
|
||||
err_rs485:
|
||||
err_port_line:
|
||||
dev_err(&pdev->dev, "[UART%d]: failure [%s]: %d\n",
|
||||
pdev->id, __func__, ret);
|
||||
|
@ -1609,6 +1792,7 @@ static void serial_omap_restore_context(struct uart_omap_port *up)
|
|||
serial_omap_mdr1_errataset(up, up->mdr1);
|
||||
else
|
||||
serial_out(up, UART_OMAP_MDR1, up->mdr1);
|
||||
serial_out(up, UART_OMAP_WER, up->wer);
|
||||
}
|
||||
|
||||
static int serial_omap_runtime_suspend(struct device *dev)
|
||||
|
|
|
@ -232,7 +232,7 @@ struct eg20t_port {
|
|||
unsigned int iobase;
|
||||
struct pci_dev *pdev;
|
||||
int fifo_size;
|
||||
int uartclk;
|
||||
unsigned int uartclk;
|
||||
int start_tx;
|
||||
int start_rx;
|
||||
int tx_empty;
|
||||
|
@ -373,35 +373,62 @@ static const struct file_operations port_regs_ops = {
|
|||
};
|
||||
#endif /* CONFIG_DEBUG_FS */
|
||||
|
||||
static struct dmi_system_id pch_uart_dmi_table[] = {
|
||||
{
|
||||
.ident = "CM-iTC",
|
||||
{
|
||||
DMI_MATCH(DMI_BOARD_NAME, "CM-iTC"),
|
||||
},
|
||||
(void *)CMITC_UARTCLK,
|
||||
},
|
||||
{
|
||||
.ident = "FRI2",
|
||||
{
|
||||
DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
|
||||
},
|
||||
(void *)FRI2_64_UARTCLK,
|
||||
},
|
||||
{
|
||||
.ident = "Fish River Island II",
|
||||
{
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
|
||||
},
|
||||
(void *)FRI2_48_UARTCLK,
|
||||
},
|
||||
{
|
||||
.ident = "COMe-mTT",
|
||||
{
|
||||
DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
|
||||
},
|
||||
(void *)NTC1_UARTCLK,
|
||||
},
|
||||
{
|
||||
.ident = "nanoETXexpress-TT",
|
||||
{
|
||||
DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"),
|
||||
},
|
||||
(void *)NTC1_UARTCLK,
|
||||
},
|
||||
{
|
||||
.ident = "MinnowBoard",
|
||||
{
|
||||
DMI_MATCH(DMI_BOARD_NAME, "MinnowBoard"),
|
||||
},
|
||||
(void *)MINNOW_UARTCLK,
|
||||
},
|
||||
};
|
||||
|
||||
/* Return UART clock, checking for board specific clocks. */
|
||||
static int pch_uart_get_uartclk(void)
|
||||
static unsigned int pch_uart_get_uartclk(void)
|
||||
{
|
||||
const char *cmp;
|
||||
const struct dmi_system_id *d;
|
||||
|
||||
if (user_uartclk)
|
||||
return user_uartclk;
|
||||
|
||||
cmp = dmi_get_system_info(DMI_BOARD_NAME);
|
||||
if (cmp && strstr(cmp, "CM-iTC"))
|
||||
return CMITC_UARTCLK;
|
||||
|
||||
cmp = dmi_get_system_info(DMI_BIOS_VERSION);
|
||||
if (cmp && strnstr(cmp, "FRI2", 4))
|
||||
return FRI2_64_UARTCLK;
|
||||
|
||||
cmp = dmi_get_system_info(DMI_PRODUCT_NAME);
|
||||
if (cmp && strstr(cmp, "Fish River Island II"))
|
||||
return FRI2_48_UARTCLK;
|
||||
|
||||
/* Kontron COMe-mTT10 (nanoETXexpress-TT) */
|
||||
cmp = dmi_get_system_info(DMI_BOARD_NAME);
|
||||
if (cmp && (strstr(cmp, "COMe-mTT") ||
|
||||
strstr(cmp, "nanoETXexpress-TT")))
|
||||
return NTC1_UARTCLK;
|
||||
|
||||
cmp = dmi_get_system_info(DMI_BOARD_NAME);
|
||||
if (cmp && strstr(cmp, "MinnowBoard"))
|
||||
return MINNOW_UARTCLK;
|
||||
d = dmi_first_match(pch_uart_dmi_table);
|
||||
if (d)
|
||||
return (unsigned long)d->driver_data;
|
||||
|
||||
return DEFAULT_UARTCLK;
|
||||
}
|
||||
|
@ -422,7 +449,7 @@ static void pch_uart_hal_disable_interrupt(struct eg20t_port *priv,
|
|||
iowrite8(ier, priv->membase + UART_IER);
|
||||
}
|
||||
|
||||
static int pch_uart_hal_set_line(struct eg20t_port *priv, int baud,
|
||||
static int pch_uart_hal_set_line(struct eg20t_port *priv, unsigned int baud,
|
||||
unsigned int parity, unsigned int bits,
|
||||
unsigned int stb)
|
||||
{
|
||||
|
@ -457,7 +484,7 @@ static int pch_uart_hal_set_line(struct eg20t_port *priv, int baud,
|
|||
lcr |= bits;
|
||||
lcr |= stb;
|
||||
|
||||
dev_dbg(priv->port.dev, "%s:baud = %d, div = %04x, lcr = %02x (%lu)\n",
|
||||
dev_dbg(priv->port.dev, "%s:baud = %u, div = %04x, lcr = %02x (%lu)\n",
|
||||
__func__, baud, div, lcr, jiffies);
|
||||
iowrite8(PCH_UART_LCR_DLAB, priv->membase + UART_LCR);
|
||||
iowrite8(dll, priv->membase + PCH_UART_DLL);
|
||||
|
@ -1363,9 +1390,8 @@ static void pch_uart_shutdown(struct uart_port *port)
|
|||
static void pch_uart_set_termios(struct uart_port *port,
|
||||
struct ktermios *termios, struct ktermios *old)
|
||||
{
|
||||
int baud;
|
||||
int rtn;
|
||||
unsigned int parity, bits, stb;
|
||||
unsigned int baud, parity, bits, stb;
|
||||
struct eg20t_port *priv;
|
||||
unsigned long flags;
|
||||
|
||||
|
@ -1498,6 +1524,7 @@ static int pch_uart_verify_port(struct uart_port *port,
|
|||
return 0;
|
||||
}
|
||||
|
||||
#if defined(CONFIG_CONSOLE_POLL) || defined(CONFIG_SERIAL_PCH_UART_CONSOLE)
|
||||
/*
|
||||
* Wait for transmitter & holding register to empty
|
||||
*/
|
||||
|
@ -1528,6 +1555,7 @@ static void wait_for_xmitr(struct eg20t_port *up, int bits)
|
|||
}
|
||||
}
|
||||
}
|
||||
#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_PCH_UART_CONSOLE */
|
||||
|
||||
#ifdef CONFIG_CONSOLE_POLL
|
||||
/*
|
||||
|
|
|
@ -1798,7 +1798,6 @@ static int __exit pmz_detach(struct platform_device *pdev)
|
|||
|
||||
uart_remove_one_port(&pmz_uart_reg, &uap->port);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
uap->port.dev = NULL;
|
||||
|
||||
return 0;
|
||||
|
|
|
@ -237,7 +237,10 @@ static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport)
|
|||
status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) |
|
||||
ISTAT_TO_SM(serial_in(sport, PNX8XXX_ISTAT));
|
||||
}
|
||||
|
||||
spin_unlock(&sport->port.lock);
|
||||
tty_flip_buffer_push(&sport->port.state->port);
|
||||
spin_lock(&sport->port.lock);
|
||||
}
|
||||
|
||||
static void pnx8xxx_tx_chars(struct pnx8xxx_port *sport)
|
||||
|
@ -801,8 +804,6 @@ static int pnx8xxx_serial_remove(struct platform_device *pdev)
|
|||
{
|
||||
struct pnx8xxx_port *sport = platform_get_drvdata(pdev);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
if (sport)
|
||||
uart_remove_one_port(&pnx8xxx_reg, &sport->port);
|
||||
|
||||
|
|
|
@ -332,31 +332,6 @@ static void serial_pxa_break_ctl(struct uart_port *port, int break_state)
|
|||
spin_unlock_irqrestore(&up->port.lock, flags);
|
||||
}
|
||||
|
||||
#if 0
|
||||
static void serial_pxa_dma_init(struct pxa_uart *up)
|
||||
{
|
||||
up->rxdma =
|
||||
pxa_request_dma(up->name, DMA_PRIO_LOW, pxa_receive_dma, up);
|
||||
if (up->rxdma < 0)
|
||||
goto out;
|
||||
up->txdma =
|
||||
pxa_request_dma(up->name, DMA_PRIO_LOW, pxa_transmit_dma, up);
|
||||
if (up->txdma < 0)
|
||||
goto err_txdma;
|
||||
up->dmadesc = kmalloc(4 * sizeof(pxa_dma_desc), GFP_KERNEL);
|
||||
if (!up->dmadesc)
|
||||
goto err_alloc;
|
||||
|
||||
/* ... */
|
||||
err_alloc:
|
||||
pxa_free_dma(up->txdma);
|
||||
err_rxdma:
|
||||
pxa_free_dma(up->rxdma);
|
||||
out:
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int serial_pxa_startup(struct uart_port *port)
|
||||
{
|
||||
struct uart_pxa_port *up = (struct uart_pxa_port *)port;
|
||||
|
@ -790,7 +765,7 @@ static struct console serial_pxa_console = {
|
|||
#define PXA_CONSOLE NULL
|
||||
#endif
|
||||
|
||||
struct uart_ops serial_pxa_pops = {
|
||||
static struct uart_ops serial_pxa_pops = {
|
||||
.tx_empty = serial_pxa_tx_empty,
|
||||
.set_mctrl = serial_pxa_set_mctrl,
|
||||
.get_mctrl = serial_pxa_get_mctrl,
|
||||
|
@ -945,8 +920,6 @@ static int serial_pxa_remove(struct platform_device *dev)
|
|||
{
|
||||
struct uart_pxa_port *sport = platform_get_drvdata(dev);
|
||||
|
||||
platform_set_drvdata(dev, NULL);
|
||||
|
||||
uart_remove_one_port(&serial_pxa_reg, &sport->port);
|
||||
|
||||
clk_unprepare(sport->clk);
|
||||
|
@ -970,7 +943,7 @@ static struct platform_driver serial_pxa_driver = {
|
|||
},
|
||||
};
|
||||
|
||||
int __init serial_pxa_init(void)
|
||||
static int __init serial_pxa_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
|
@ -985,7 +958,7 @@ int __init serial_pxa_init(void)
|
|||
return ret;
|
||||
}
|
||||
|
||||
void __exit serial_pxa_exit(void)
|
||||
static void __exit serial_pxa_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&serial_pxa_driver);
|
||||
uart_unregister_driver(&serial_pxa_reg);
|
||||
|
|
|
@ -427,7 +427,9 @@ static void rp2_rx_chars(struct rp2_uart_port *up)
|
|||
up->port.icount.rx++;
|
||||
}
|
||||
|
||||
spin_unlock(&up->port.lock);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock(&up->port.lock);
|
||||
}
|
||||
|
||||
static void rp2_tx_chars(struct rp2_uart_port *up)
|
||||
|
|
|
@ -232,7 +232,10 @@ sa1100_rx_chars(struct sa1100_port *sport)
|
|||
status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
|
||||
UTSR0_TO_SM(UART_GET_UTSR0(sport));
|
||||
}
|
||||
|
||||
spin_unlock(&sport->port.lock);
|
||||
tty_flip_buffer_push(&sport->port.state->port);
|
||||
spin_lock(&sport->port.lock);
|
||||
}
|
||||
|
||||
static void sa1100_tx_chars(struct sa1100_port *sport)
|
||||
|
@ -864,8 +867,6 @@ static int sa1100_serial_remove(struct platform_device *pdev)
|
|||
{
|
||||
struct sa1100_port *sport = platform_get_drvdata(pdev);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
if (sport)
|
||||
uart_remove_one_port(&sa1100_reg, &sport->port);
|
||||
|
||||
|
|
|
@ -249,6 +249,8 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id)
|
|||
ufcon |= S3C2410_UFCON_RESETRX;
|
||||
wr_regl(port, S3C2410_UFCON, ufcon);
|
||||
rx_enabled(port) = 1;
|
||||
spin_unlock_irqrestore(&port->lock,
|
||||
flags);
|
||||
goto out;
|
||||
}
|
||||
continue;
|
||||
|
@ -297,10 +299,11 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id)
|
|||
ignore_char:
|
||||
continue;
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
tty_flip_buffer_push(&port->state->port);
|
||||
|
||||
out:
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
|
@ -1250,8 +1253,8 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
|
|||
|
||||
ourport->baudclk = ERR_PTR(-EINVAL);
|
||||
ourport->info = ourport->drv_data->info;
|
||||
ourport->cfg = (pdev->dev.platform_data) ?
|
||||
(struct s3c2410_uartcfg *)pdev->dev.platform_data :
|
||||
ourport->cfg = (dev_get_platdata(&pdev->dev)) ?
|
||||
(struct s3c2410_uartcfg *)dev_get_platdata(&pdev->dev) :
|
||||
ourport->drv_data->def_cfg;
|
||||
|
||||
ourport->port.fifosize = (ourport->info->fifosize) ?
|
||||
|
|
|
@ -68,7 +68,8 @@ struct s3c24xx_uart_port {
|
|||
/* register access controls */
|
||||
|
||||
#define portaddr(port, reg) ((port)->membase + (reg))
|
||||
#define portaddrl(port, reg) ((unsigned long *)((port)->membase + (reg)))
|
||||
#define portaddrl(port, reg) \
|
||||
((unsigned long *)(unsigned long)((port)->membase + (reg)))
|
||||
|
||||
#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
|
||||
#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
|
||||
|
|
|
@ -637,7 +637,7 @@ static int sc26xx_probe(struct platform_device *dev)
|
|||
{
|
||||
struct resource *res;
|
||||
struct uart_sc26xx_port *up;
|
||||
unsigned int *sc26xx_data = dev->dev.platform_data;
|
||||
unsigned int *sc26xx_data = dev_get_platdata(&dev->dev);
|
||||
int err;
|
||||
|
||||
res = platform_get_resource(dev, IORESOURCE_MEM, 0);
|
||||
|
|
|
@ -15,6 +15,7 @@
|
|||
#define SUPPORT_SYSRQ
|
||||
#endif
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/device.h>
|
||||
|
@ -94,16 +95,17 @@
|
|||
#define MCTRL_IBIT(cfg, sig) ((((cfg) >> (sig)) & 0xf) - LINE_IP0)
|
||||
#define MCTRL_OBIT(cfg, sig) ((((cfg) >> (sig)) & 0xf) - LINE_OP0)
|
||||
|
||||
/* Supported chip types */
|
||||
enum {
|
||||
SCCNXP_TYPE_SC2681 = 2681,
|
||||
SCCNXP_TYPE_SC2691 = 2691,
|
||||
SCCNXP_TYPE_SC2692 = 2692,
|
||||
SCCNXP_TYPE_SC2891 = 2891,
|
||||
SCCNXP_TYPE_SC2892 = 2892,
|
||||
SCCNXP_TYPE_SC28202 = 28202,
|
||||
SCCNXP_TYPE_SC68681 = 68681,
|
||||
SCCNXP_TYPE_SC68692 = 68692,
|
||||
#define SCCNXP_HAVE_IO 0x00000001
|
||||
#define SCCNXP_HAVE_MR0 0x00000002
|
||||
|
||||
struct sccnxp_chip {
|
||||
const char *name;
|
||||
unsigned int nr;
|
||||
unsigned long freq_min;
|
||||
unsigned long freq_std;
|
||||
unsigned long freq_max;
|
||||
unsigned int flags;
|
||||
unsigned int fifosize;
|
||||
};
|
||||
|
||||
struct sccnxp_port {
|
||||
|
@ -111,16 +113,10 @@ struct sccnxp_port {
|
|||
struct uart_port port[SCCNXP_MAX_UARTS];
|
||||
bool opened[SCCNXP_MAX_UARTS];
|
||||
|
||||
const char *name;
|
||||
int irq;
|
||||
|
||||
u8 imr;
|
||||
u8 addr_mask;
|
||||
int freq_std;
|
||||
|
||||
int flags;
|
||||
#define SCCNXP_HAVE_IO 0x00000001
|
||||
#define SCCNXP_HAVE_MR0 0x00000002
|
||||
struct sccnxp_chip *chip;
|
||||
|
||||
#ifdef CONFIG_SERIAL_SCCNXP_CONSOLE
|
||||
struct console console;
|
||||
|
@ -136,29 +132,94 @@ struct sccnxp_port {
|
|||
struct regulator *regulator;
|
||||
};
|
||||
|
||||
static inline u8 sccnxp_raw_read(void __iomem *base, u8 reg, u8 shift)
|
||||
{
|
||||
return readb(base + (reg << shift));
|
||||
}
|
||||
static const struct sccnxp_chip sc2681 = {
|
||||
.name = "SC2681",
|
||||
.nr = 2,
|
||||
.freq_min = 1000000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 4000000,
|
||||
.flags = SCCNXP_HAVE_IO,
|
||||
.fifosize = 3,
|
||||
};
|
||||
|
||||
static inline void sccnxp_raw_write(void __iomem *base, u8 reg, u8 shift, u8 v)
|
||||
{
|
||||
writeb(v, base + (reg << shift));
|
||||
}
|
||||
static const struct sccnxp_chip sc2691 = {
|
||||
.name = "SC2691",
|
||||
.nr = 1,
|
||||
.freq_min = 1000000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 4000000,
|
||||
.flags = 0,
|
||||
.fifosize = 3,
|
||||
};
|
||||
|
||||
static const struct sccnxp_chip sc2692 = {
|
||||
.name = "SC2692",
|
||||
.nr = 2,
|
||||
.freq_min = 1000000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 4000000,
|
||||
.flags = SCCNXP_HAVE_IO,
|
||||
.fifosize = 3,
|
||||
};
|
||||
|
||||
static const struct sccnxp_chip sc2891 = {
|
||||
.name = "SC2891",
|
||||
.nr = 1,
|
||||
.freq_min = 100000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 8000000,
|
||||
.flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0,
|
||||
.fifosize = 16,
|
||||
};
|
||||
|
||||
static const struct sccnxp_chip sc2892 = {
|
||||
.name = "SC2892",
|
||||
.nr = 2,
|
||||
.freq_min = 100000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 8000000,
|
||||
.flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0,
|
||||
.fifosize = 16,
|
||||
};
|
||||
|
||||
static const struct sccnxp_chip sc28202 = {
|
||||
.name = "SC28202",
|
||||
.nr = 2,
|
||||
.freq_min = 1000000,
|
||||
.freq_std = 14745600,
|
||||
.freq_max = 50000000,
|
||||
.flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0,
|
||||
.fifosize = 256,
|
||||
};
|
||||
|
||||
static const struct sccnxp_chip sc68681 = {
|
||||
.name = "SC68681",
|
||||
.nr = 2,
|
||||
.freq_min = 1000000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 4000000,
|
||||
.flags = SCCNXP_HAVE_IO,
|
||||
.fifosize = 3,
|
||||
};
|
||||
|
||||
static const struct sccnxp_chip sc68692 = {
|
||||
.name = "SC68692",
|
||||
.nr = 2,
|
||||
.freq_min = 1000000,
|
||||
.freq_std = 3686400,
|
||||
.freq_max = 4000000,
|
||||
.flags = SCCNXP_HAVE_IO,
|
||||
.fifosize = 3,
|
||||
};
|
||||
|
||||
static inline u8 sccnxp_read(struct uart_port *port, u8 reg)
|
||||
{
|
||||
struct sccnxp_port *s = dev_get_drvdata(port->dev);
|
||||
|
||||
return sccnxp_raw_read(port->membase, reg & s->addr_mask,
|
||||
port->regshift);
|
||||
return readb(port->membase + (reg << port->regshift));
|
||||
}
|
||||
|
||||
static inline void sccnxp_write(struct uart_port *port, u8 reg, u8 v)
|
||||
{
|
||||
struct sccnxp_port *s = dev_get_drvdata(port->dev);
|
||||
|
||||
sccnxp_raw_write(port->membase, reg & s->addr_mask, port->regshift, v);
|
||||
writeb(v, port->membase + (reg << port->regshift));
|
||||
}
|
||||
|
||||
static inline u8 sccnxp_port_read(struct uart_port *port, u8 reg)
|
||||
|
@ -224,13 +285,14 @@ static int sccnxp_set_baud(struct uart_port *port, int baud)
|
|||
{
|
||||
struct sccnxp_port *s = dev_get_drvdata(port->dev);
|
||||
int div_std, tmp_baud, bestbaud = baud, besterr = -1;
|
||||
struct sccnxp_chip *chip = s->chip;
|
||||
u8 i, acr = 0, csr = 0, mr0 = 0;
|
||||
|
||||
/* Find best baud from table */
|
||||
for (i = 0; baud_std[i].baud && besterr; i++) {
|
||||
if (baud_std[i].mr0 && !(s->flags & SCCNXP_HAVE_MR0))
|
||||
if (baud_std[i].mr0 && !(chip->flags & SCCNXP_HAVE_MR0))
|
||||
continue;
|
||||
div_std = DIV_ROUND_CLOSEST(s->freq_std, baud_std[i].baud);
|
||||
div_std = DIV_ROUND_CLOSEST(chip->freq_std, baud_std[i].baud);
|
||||
tmp_baud = DIV_ROUND_CLOSEST(port->uartclk, div_std);
|
||||
if (!sccnxp_update_best_err(baud, tmp_baud, &besterr)) {
|
||||
acr = baud_std[i].acr;
|
||||
|
@ -240,7 +302,7 @@ static int sccnxp_set_baud(struct uart_port *port, int baud)
|
|||
}
|
||||
}
|
||||
|
||||
if (s->flags & SCCNXP_HAVE_MR0) {
|
||||
if (chip->flags & SCCNXP_HAVE_MR0) {
|
||||
/* Enable FIFO, set half level for TX */
|
||||
mr0 |= MR0_FIFO | MR0_TXLVL;
|
||||
/* Update MR0 */
|
||||
|
@ -363,7 +425,7 @@ static void sccnxp_handle_tx(struct uart_port *port)
|
|||
sccnxp_disable_irq(port, IMR_TXRDY);
|
||||
|
||||
/* Set direction to input */
|
||||
if (s->flags & SCCNXP_HAVE_IO)
|
||||
if (s->chip->flags & SCCNXP_HAVE_IO)
|
||||
sccnxp_set_bit(port, DIR_OP, 0);
|
||||
}
|
||||
return;
|
||||
|
@ -437,7 +499,7 @@ static void sccnxp_start_tx(struct uart_port *port)
|
|||
spin_lock_irqsave(&s->lock, flags);
|
||||
|
||||
/* Set direction to output */
|
||||
if (s->flags & SCCNXP_HAVE_IO)
|
||||
if (s->chip->flags & SCCNXP_HAVE_IO)
|
||||
sccnxp_set_bit(port, DIR_OP, 1);
|
||||
|
||||
sccnxp_enable_irq(port, IMR_TXRDY);
|
||||
|
@ -483,7 +545,7 @@ static void sccnxp_set_mctrl(struct uart_port *port, unsigned int mctrl)
|
|||
struct sccnxp_port *s = dev_get_drvdata(port->dev);
|
||||
unsigned long flags;
|
||||
|
||||
if (!(s->flags & SCCNXP_HAVE_IO))
|
||||
if (!(s->chip->flags & SCCNXP_HAVE_IO))
|
||||
return;
|
||||
|
||||
spin_lock_irqsave(&s->lock, flags);
|
||||
|
@ -501,7 +563,7 @@ static unsigned int sccnxp_get_mctrl(struct uart_port *port)
|
|||
struct sccnxp_port *s = dev_get_drvdata(port->dev);
|
||||
unsigned int mctrl = TIOCM_DSR | TIOCM_CTS | TIOCM_CAR;
|
||||
|
||||
if (!(s->flags & SCCNXP_HAVE_IO))
|
||||
if (!(s->chip->flags & SCCNXP_HAVE_IO))
|
||||
return mctrl;
|
||||
|
||||
spin_lock_irqsave(&s->lock, flags);
|
||||
|
@ -617,7 +679,7 @@ static void sccnxp_set_termios(struct uart_port *port,
|
|||
|
||||
/* Setup baudrate */
|
||||
baud = uart_get_baud_rate(port, termios, old, 50,
|
||||
(s->flags & SCCNXP_HAVE_MR0) ?
|
||||
(s->chip->flags & SCCNXP_HAVE_MR0) ?
|
||||
230400 : 38400);
|
||||
baud = sccnxp_set_baud(port, baud);
|
||||
|
||||
|
@ -641,7 +703,7 @@ static int sccnxp_startup(struct uart_port *port)
|
|||
|
||||
spin_lock_irqsave(&s->lock, flags);
|
||||
|
||||
if (s->flags & SCCNXP_HAVE_IO) {
|
||||
if (s->chip->flags & SCCNXP_HAVE_IO) {
|
||||
/* Outputs are controlled manually */
|
||||
sccnxp_write(port, SCCNXP_OPCR_REG, 0);
|
||||
}
|
||||
|
@ -681,7 +743,7 @@ static void sccnxp_shutdown(struct uart_port *port)
|
|||
sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_DISABLE | CR_TX_DISABLE);
|
||||
|
||||
/* Leave direction to input */
|
||||
if (s->flags & SCCNXP_HAVE_IO)
|
||||
if (s->chip->flags & SCCNXP_HAVE_IO)
|
||||
sccnxp_set_bit(port, DIR_OP, 0);
|
||||
|
||||
spin_unlock_irqrestore(&s->lock, flags);
|
||||
|
@ -691,7 +753,7 @@ static const char *sccnxp_type(struct uart_port *port)
|
|||
{
|
||||
struct sccnxp_port *s = dev_get_drvdata(port->dev);
|
||||
|
||||
return (port->type == PORT_SC26XX) ? s->name : NULL;
|
||||
return (port->type == PORT_SC26XX) ? s->chip->name : NULL;
|
||||
}
|
||||
|
||||
static void sccnxp_release_port(struct uart_port *port)
|
||||
|
@ -778,19 +840,31 @@ static int sccnxp_console_setup(struct console *co, char *options)
|
|||
}
|
||||
#endif
|
||||
|
||||
static const struct platform_device_id sccnxp_id_table[] = {
|
||||
{ .name = "sc2681", .driver_data = (kernel_ulong_t)&sc2681, },
|
||||
{ .name = "sc2691", .driver_data = (kernel_ulong_t)&sc2691, },
|
||||
{ .name = "sc2692", .driver_data = (kernel_ulong_t)&sc2692, },
|
||||
{ .name = "sc2891", .driver_data = (kernel_ulong_t)&sc2891, },
|
||||
{ .name = "sc2892", .driver_data = (kernel_ulong_t)&sc2892, },
|
||||
{ .name = "sc28202", .driver_data = (kernel_ulong_t)&sc28202, },
|
||||
{ .name = "sc68681", .driver_data = (kernel_ulong_t)&sc68681, },
|
||||
{ .name = "sc68692", .driver_data = (kernel_ulong_t)&sc68692, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, sccnxp_id_table);
|
||||
|
||||
static int sccnxp_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
int chiptype = pdev->id_entry->driver_data;
|
||||
struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev);
|
||||
int i, ret, fifosize, freq_min, freq_max;
|
||||
int i, ret, uartclk;
|
||||
struct sccnxp_port *s;
|
||||
void __iomem *membase;
|
||||
struct clk *clk;
|
||||
|
||||
if (!res) {
|
||||
dev_err(&pdev->dev, "Missing memory resource data\n");
|
||||
return -EADDRNOTAVAIL;
|
||||
}
|
||||
membase = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(membase))
|
||||
return PTR_ERR(membase);
|
||||
|
||||
s = devm_kzalloc(&pdev->dev, sizeof(struct sccnxp_port), GFP_KERNEL);
|
||||
if (!s) {
|
||||
|
@ -801,99 +875,38 @@ static int sccnxp_probe(struct platform_device *pdev)
|
|||
|
||||
spin_lock_init(&s->lock);
|
||||
|
||||
/* Individual chip settings */
|
||||
switch (chiptype) {
|
||||
case SCCNXP_TYPE_SC2681:
|
||||
s->name = "SC2681";
|
||||
s->uart.nr = 2;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x0f;
|
||||
s->flags = SCCNXP_HAVE_IO;
|
||||
fifosize = 3;
|
||||
freq_min = 1000000;
|
||||
freq_max = 4000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC2691:
|
||||
s->name = "SC2691";
|
||||
s->uart.nr = 1;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x07;
|
||||
s->flags = 0;
|
||||
fifosize = 3;
|
||||
freq_min = 1000000;
|
||||
freq_max = 4000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC2692:
|
||||
s->name = "SC2692";
|
||||
s->uart.nr = 2;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x0f;
|
||||
s->flags = SCCNXP_HAVE_IO;
|
||||
fifosize = 3;
|
||||
freq_min = 1000000;
|
||||
freq_max = 4000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC2891:
|
||||
s->name = "SC2891";
|
||||
s->uart.nr = 1;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x0f;
|
||||
s->flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0;
|
||||
fifosize = 16;
|
||||
freq_min = 100000;
|
||||
freq_max = 8000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC2892:
|
||||
s->name = "SC2892";
|
||||
s->uart.nr = 2;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x0f;
|
||||
s->flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0;
|
||||
fifosize = 16;
|
||||
freq_min = 100000;
|
||||
freq_max = 8000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC28202:
|
||||
s->name = "SC28202";
|
||||
s->uart.nr = 2;
|
||||
s->freq_std = 14745600;
|
||||
s->addr_mask = 0x7f;
|
||||
s->flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0;
|
||||
fifosize = 256;
|
||||
freq_min = 1000000;
|
||||
freq_max = 50000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC68681:
|
||||
s->name = "SC68681";
|
||||
s->uart.nr = 2;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x0f;
|
||||
s->flags = SCCNXP_HAVE_IO;
|
||||
fifosize = 3;
|
||||
freq_min = 1000000;
|
||||
freq_max = 4000000;
|
||||
break;
|
||||
case SCCNXP_TYPE_SC68692:
|
||||
s->name = "SC68692";
|
||||
s->uart.nr = 2;
|
||||
s->freq_std = 3686400;
|
||||
s->addr_mask = 0x0f;
|
||||
s->flags = SCCNXP_HAVE_IO;
|
||||
fifosize = 3;
|
||||
freq_min = 1000000;
|
||||
freq_max = 4000000;
|
||||
break;
|
||||
default:
|
||||
dev_err(&pdev->dev, "Unsupported chip type %i\n", chiptype);
|
||||
ret = -ENOTSUPP;
|
||||
s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
|
||||
|
||||
s->regulator = devm_regulator_get(&pdev->dev, "vcc");
|
||||
if (!IS_ERR(s->regulator)) {
|
||||
ret = regulator_enable(s->regulator);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"Failed to enable regulator: %i\n", ret);
|
||||
return ret;
|
||||
}
|
||||
} else if (PTR_ERR(s->regulator) == -EPROBE_DEFER)
|
||||
return -EPROBE_DEFER;
|
||||
|
||||
clk = devm_clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(clk)) {
|
||||
if (PTR_ERR(clk) == -EPROBE_DEFER) {
|
||||
ret = -EPROBE_DEFER;
|
||||
goto err_out;
|
||||
}
|
||||
dev_notice(&pdev->dev, "Using default clock frequency\n");
|
||||
uartclk = s->chip->freq_std;
|
||||
} else
|
||||
uartclk = clk_get_rate(clk);
|
||||
|
||||
/* Check input frequency */
|
||||
if ((uartclk < s->chip->freq_min) || (uartclk > s->chip->freq_max)) {
|
||||
dev_err(&pdev->dev, "Frequency out of bounds\n");
|
||||
ret = -EINVAL;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
if (!pdata) {
|
||||
dev_warn(&pdev->dev,
|
||||
"No platform data supplied, using defaults\n");
|
||||
s->pdata.frequency = s->freq_std;
|
||||
} else
|
||||
if (pdata)
|
||||
memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
|
||||
|
||||
if (s->pdata.poll_time_us) {
|
||||
|
@ -911,34 +924,11 @@ static int sccnxp_probe(struct platform_device *pdev)
|
|||
}
|
||||
}
|
||||
|
||||
/* Check input frequency */
|
||||
if ((s->pdata.frequency < freq_min) ||
|
||||
(s->pdata.frequency > freq_max)) {
|
||||
dev_err(&pdev->dev, "Frequency out of bounds\n");
|
||||
ret = -EINVAL;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
s->regulator = devm_regulator_get(&pdev->dev, "VCC");
|
||||
if (!IS_ERR(s->regulator)) {
|
||||
ret = regulator_enable(s->regulator);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"Failed to enable regulator: %i\n", ret);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
membase = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(membase)) {
|
||||
ret = PTR_ERR(membase);
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
s->uart.owner = THIS_MODULE;
|
||||
s->uart.dev_name = "ttySC";
|
||||
s->uart.major = SCCNXP_MAJOR;
|
||||
s->uart.minor = SCCNXP_MINOR;
|
||||
s->uart.nr = s->chip->nr;
|
||||
#ifdef CONFIG_SERIAL_SCCNXP_CONSOLE
|
||||
s->uart.cons = &s->console;
|
||||
s->uart.cons->device = uart_console_device;
|
||||
|
@ -960,17 +950,17 @@ static int sccnxp_probe(struct platform_device *pdev)
|
|||
s->port[i].dev = &pdev->dev;
|
||||
s->port[i].irq = s->irq;
|
||||
s->port[i].type = PORT_SC26XX;
|
||||
s->port[i].fifosize = fifosize;
|
||||
s->port[i].fifosize = s->chip->fifosize;
|
||||
s->port[i].flags = UPF_SKIP_TEST | UPF_FIXED_TYPE;
|
||||
s->port[i].iotype = UPIO_MEM;
|
||||
s->port[i].mapbase = res->start;
|
||||
s->port[i].membase = membase;
|
||||
s->port[i].regshift = s->pdata.reg_shift;
|
||||
s->port[i].uartclk = s->pdata.frequency;
|
||||
s->port[i].uartclk = uartclk;
|
||||
s->port[i].ops = &sccnxp_ops;
|
||||
uart_add_one_port(&s->uart, &s->port[i]);
|
||||
/* Set direction to input */
|
||||
if (s->flags & SCCNXP_HAVE_IO)
|
||||
if (s->chip->flags & SCCNXP_HAVE_IO)
|
||||
sccnxp_set_bit(&s->port[i], DIR_OP, 0);
|
||||
}
|
||||
|
||||
|
@ -997,7 +987,8 @@ static int sccnxp_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
err_out:
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
if (!IS_ERR(s->regulator))
|
||||
return regulator_disable(s->regulator);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
@ -1016,7 +1007,6 @@ static int sccnxp_remove(struct platform_device *pdev)
|
|||
uart_remove_one_port(&s->uart, &s->port[i]);
|
||||
|
||||
uart_unregister_driver(&s->uart);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
if (!IS_ERR(s->regulator))
|
||||
return regulator_disable(s->regulator);
|
||||
|
@ -1024,19 +1014,6 @@ static int sccnxp_remove(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id sccnxp_id_table[] = {
|
||||
{ "sc2681", SCCNXP_TYPE_SC2681 },
|
||||
{ "sc2691", SCCNXP_TYPE_SC2691 },
|
||||
{ "sc2692", SCCNXP_TYPE_SC2692 },
|
||||
{ "sc2891", SCCNXP_TYPE_SC2891 },
|
||||
{ "sc2892", SCCNXP_TYPE_SC2892 },
|
||||
{ "sc28202", SCCNXP_TYPE_SC28202 },
|
||||
{ "sc68681", SCCNXP_TYPE_SC68681 },
|
||||
{ "sc68692", SCCNXP_TYPE_SC68692 },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, sccnxp_id_table);
|
||||
|
||||
static struct platform_driver sccnxp_uart_driver = {
|
||||
.driver = {
|
||||
.name = SCCNXP_NAME,
|
||||
|
|
|
@ -571,7 +571,9 @@ static void tegra_uart_rx_dma_complete(void *args)
|
|||
|
||||
tegra_uart_handle_rx_pio(tup, port);
|
||||
if (tty) {
|
||||
spin_unlock_irqrestore(&u->lock, flags);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock_irqsave(&u->lock, flags);
|
||||
tty_kref_put(tty);
|
||||
}
|
||||
tegra_uart_start_rx_dma(tup);
|
||||
|
@ -583,11 +585,13 @@ static void tegra_uart_rx_dma_complete(void *args)
|
|||
spin_unlock_irqrestore(&u->lock, flags);
|
||||
}
|
||||
|
||||
static void tegra_uart_handle_rx_dma(struct tegra_uart_port *tup)
|
||||
static void tegra_uart_handle_rx_dma(struct tegra_uart_port *tup,
|
||||
unsigned long *flags)
|
||||
{
|
||||
struct dma_tx_state state;
|
||||
struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
|
||||
struct tty_port *port = &tup->uport.state->port;
|
||||
struct uart_port *u = &tup->uport;
|
||||
int count;
|
||||
|
||||
/* Deactivate flow control to stop sender */
|
||||
|
@ -604,7 +608,9 @@ static void tegra_uart_handle_rx_dma(struct tegra_uart_port *tup)
|
|||
|
||||
tegra_uart_handle_rx_pio(tup, port);
|
||||
if (tty) {
|
||||
spin_unlock_irqrestore(&u->lock, *flags);
|
||||
tty_flip_buffer_push(port);
|
||||
spin_lock_irqsave(&u->lock, *flags);
|
||||
tty_kref_put(tty);
|
||||
}
|
||||
tegra_uart_start_rx_dma(tup);
|
||||
|
@ -671,7 +677,7 @@ static irqreturn_t tegra_uart_isr(int irq, void *data)
|
|||
iir = tegra_uart_read(tup, UART_IIR);
|
||||
if (iir & UART_IIR_NO_INT) {
|
||||
if (is_rx_int) {
|
||||
tegra_uart_handle_rx_dma(tup);
|
||||
tegra_uart_handle_rx_dma(tup, &flags);
|
||||
if (tup->rx_in_progress) {
|
||||
ier = tup->ier_shadow;
|
||||
ier |= (UART_IER_RLSI | UART_IER_RTOIE |
|
||||
|
@ -1206,7 +1212,7 @@ static struct uart_driver tegra_uart_driver = {
|
|||
.owner = THIS_MODULE,
|
||||
.driver_name = "tegra_hsuart",
|
||||
.dev_name = "ttyTHS",
|
||||
.cons = 0,
|
||||
.cons = NULL,
|
||||
.nr = TEGRA_UART_MAXIMUM,
|
||||
};
|
||||
|
||||
|
@ -1237,13 +1243,13 @@ static int tegra_uart_parse_dt(struct platform_device *pdev,
|
|||
return 0;
|
||||
}
|
||||
|
||||
struct tegra_uart_chip_data tegra20_uart_chip_data = {
|
||||
static struct tegra_uart_chip_data tegra20_uart_chip_data = {
|
||||
.tx_fifo_full_status = false,
|
||||
.allow_txfifo_reset_fifo_mode = true,
|
||||
.support_clk_src_div = false,
|
||||
};
|
||||
|
||||
struct tegra_uart_chip_data tegra30_uart_chip_data = {
|
||||
static struct tegra_uart_chip_data tegra30_uart_chip_data = {
|
||||
.tx_fifo_full_status = true,
|
||||
.allow_txfifo_reset_fifo_mode = false,
|
||||
.support_clk_src_div = true,
|
||||
|
|
|
@ -2095,12 +2095,12 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
|
|||
break;
|
||||
}
|
||||
|
||||
printk(KERN_INFO "%s%s%s%d at %s (irq = %d) is a %s\n",
|
||||
printk(KERN_INFO "%s%s%s%d at %s (irq = %d, base_baud = %d) is a %s\n",
|
||||
port->dev ? dev_name(port->dev) : "",
|
||||
port->dev ? ": " : "",
|
||||
drv->dev_name,
|
||||
drv->tty_driver->name_base + port->line,
|
||||
address, port->irq, uart_type(port));
|
||||
address, port->irq, port->uartclk / 16, uart_type(port));
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
|
@ -1097,7 +1097,7 @@ static void serial_txx9_unregister_port(int line)
|
|||
*/
|
||||
static int serial_txx9_probe(struct platform_device *dev)
|
||||
{
|
||||
struct uart_port *p = dev->dev.platform_data;
|
||||
struct uart_port *p = dev_get_platdata(&dev->dev);
|
||||
struct uart_port port;
|
||||
int ret, i;
|
||||
|
||||
|
|
|
@ -2380,7 +2380,7 @@ static char early_serial_buf[32];
|
|||
|
||||
static int sci_probe_earlyprintk(struct platform_device *pdev)
|
||||
{
|
||||
struct plat_sci_port *cfg = pdev->dev.platform_data;
|
||||
struct plat_sci_port *cfg = dev_get_platdata(&pdev->dev);
|
||||
|
||||
if (early_serial_console.data)
|
||||
return -EEXIST;
|
||||
|
@ -2469,7 +2469,7 @@ static int sci_probe_single(struct platform_device *dev,
|
|||
|
||||
static int sci_probe(struct platform_device *dev)
|
||||
{
|
||||
struct plat_sci_port *p = dev->dev.platform_data;
|
||||
struct plat_sci_port *p = dev_get_platdata(&dev->dev);
|
||||
struct sci_port *sp = &sci_ports[dev->id];
|
||||
int ret;
|
||||
|
||||
|
|
File diff suppressed because it is too large
Load Diff
|
@ -6,31 +6,260 @@
|
|||
* Licensed under GPLv2 or later.
|
||||
*/
|
||||
#include <linux/bitops.h>
|
||||
struct sirfsoc_uart_param {
|
||||
const char *uart_name;
|
||||
const char *port_name;
|
||||
u32 uart_nr;
|
||||
u32 register_uart_nr;
|
||||
};
|
||||
|
||||
/* UART Register Offset Define */
|
||||
#define SIRFUART_LINE_CTRL 0x0040
|
||||
#define SIRFUART_TX_RX_EN 0x004c
|
||||
#define SIRFUART_DIVISOR 0x0050
|
||||
#define SIRFUART_INT_EN 0x0054
|
||||
#define SIRFUART_INT_STATUS 0x0058
|
||||
#define SIRFUART_TX_DMA_IO_CTRL 0x0100
|
||||
#define SIRFUART_TX_DMA_IO_LEN 0x0104
|
||||
#define SIRFUART_TX_FIFO_CTRL 0x0108
|
||||
#define SIRFUART_TX_FIFO_LEVEL_CHK 0x010C
|
||||
#define SIRFUART_TX_FIFO_OP 0x0110
|
||||
#define SIRFUART_TX_FIFO_STATUS 0x0114
|
||||
#define SIRFUART_TX_FIFO_DATA 0x0118
|
||||
#define SIRFUART_RX_DMA_IO_CTRL 0x0120
|
||||
#define SIRFUART_RX_DMA_IO_LEN 0x0124
|
||||
#define SIRFUART_RX_FIFO_CTRL 0x0128
|
||||
#define SIRFUART_RX_FIFO_LEVEL_CHK 0x012C
|
||||
#define SIRFUART_RX_FIFO_OP 0x0130
|
||||
#define SIRFUART_RX_FIFO_STATUS 0x0134
|
||||
#define SIRFUART_RX_FIFO_DATA 0x0138
|
||||
#define SIRFUART_AFC_CTRL 0x0140
|
||||
#define SIRFUART_SWH_DMA_IO 0x0148
|
||||
struct sirfsoc_register {
|
||||
/* hardware uart specific */
|
||||
u32 sirfsoc_line_ctrl;
|
||||
u32 sirfsoc_divisor;
|
||||
/* uart - usp common */
|
||||
u32 sirfsoc_tx_rx_en;
|
||||
u32 sirfsoc_int_en_reg;
|
||||
u32 sirfsoc_int_st_reg;
|
||||
u32 sirfsoc_tx_dma_io_ctrl;
|
||||
u32 sirfsoc_tx_dma_io_len;
|
||||
u32 sirfsoc_tx_fifo_ctrl;
|
||||
u32 sirfsoc_tx_fifo_level_chk;
|
||||
u32 sirfsoc_tx_fifo_op;
|
||||
u32 sirfsoc_tx_fifo_status;
|
||||
u32 sirfsoc_tx_fifo_data;
|
||||
u32 sirfsoc_rx_dma_io_ctrl;
|
||||
u32 sirfsoc_rx_dma_io_len;
|
||||
u32 sirfsoc_rx_fifo_ctrl;
|
||||
u32 sirfsoc_rx_fifo_level_chk;
|
||||
u32 sirfsoc_rx_fifo_op;
|
||||
u32 sirfsoc_rx_fifo_status;
|
||||
u32 sirfsoc_rx_fifo_data;
|
||||
u32 sirfsoc_afc_ctrl;
|
||||
u32 sirfsoc_swh_dma_io;
|
||||
/* hardware usp specific */
|
||||
u32 sirfsoc_mode1;
|
||||
u32 sirfsoc_mode2;
|
||||
u32 sirfsoc_tx_frame_ctrl;
|
||||
u32 sirfsoc_rx_frame_ctrl;
|
||||
u32 sirfsoc_async_param_reg;
|
||||
};
|
||||
|
||||
/* UART Line Control Register */
|
||||
typedef u32 (*fifo_full_mask)(int line);
|
||||
typedef u32 (*fifo_empty_mask)(int line);
|
||||
|
||||
struct sirfsoc_fifo_status {
|
||||
fifo_full_mask ff_full;
|
||||
fifo_empty_mask ff_empty;
|
||||
};
|
||||
|
||||
struct sirfsoc_int_en {
|
||||
u32 sirfsoc_rx_done_en;
|
||||
u32 sirfsoc_tx_done_en;
|
||||
u32 sirfsoc_rx_oflow_en;
|
||||
u32 sirfsoc_tx_allout_en;
|
||||
u32 sirfsoc_rx_io_dma_en;
|
||||
u32 sirfsoc_tx_io_dma_en;
|
||||
u32 sirfsoc_rxfifo_full_en;
|
||||
u32 sirfsoc_txfifo_empty_en;
|
||||
u32 sirfsoc_rxfifo_thd_en;
|
||||
u32 sirfsoc_txfifo_thd_en;
|
||||
u32 sirfsoc_frm_err_en;
|
||||
u32 sirfsoc_rxd_brk_en;
|
||||
u32 sirfsoc_rx_timeout_en;
|
||||
u32 sirfsoc_parity_err_en;
|
||||
u32 sirfsoc_cts_en;
|
||||
u32 sirfsoc_rts_en;
|
||||
};
|
||||
|
||||
struct sirfsoc_int_status {
|
||||
u32 sirfsoc_rx_done;
|
||||
u32 sirfsoc_tx_done;
|
||||
u32 sirfsoc_rx_oflow;
|
||||
u32 sirfsoc_tx_allout;
|
||||
u32 sirfsoc_rx_io_dma;
|
||||
u32 sirfsoc_tx_io_dma;
|
||||
u32 sirfsoc_rxfifo_full;
|
||||
u32 sirfsoc_txfifo_empty;
|
||||
u32 sirfsoc_rxfifo_thd;
|
||||
u32 sirfsoc_txfifo_thd;
|
||||
u32 sirfsoc_frm_err;
|
||||
u32 sirfsoc_rxd_brk;
|
||||
u32 sirfsoc_rx_timeout;
|
||||
u32 sirfsoc_parity_err;
|
||||
u32 sirfsoc_cts;
|
||||
u32 sirfsoc_rts;
|
||||
};
|
||||
|
||||
enum sirfsoc_uart_type {
|
||||
SIRF_REAL_UART,
|
||||
SIRF_USP_UART,
|
||||
};
|
||||
|
||||
struct sirfsoc_uart_register {
|
||||
struct sirfsoc_register uart_reg;
|
||||
struct sirfsoc_int_en uart_int_en;
|
||||
struct sirfsoc_int_status uart_int_st;
|
||||
struct sirfsoc_fifo_status fifo_status;
|
||||
struct sirfsoc_uart_param uart_param;
|
||||
enum sirfsoc_uart_type uart_type;
|
||||
};
|
||||
|
||||
u32 usp_ff_full(int line)
|
||||
{
|
||||
return 0x80;
|
||||
}
|
||||
u32 usp_ff_empty(int line)
|
||||
{
|
||||
return 0x100;
|
||||
}
|
||||
u32 uart_ff_full(int line)
|
||||
{
|
||||
return (line == 1) ? (0x20) : (0x80);
|
||||
}
|
||||
u32 uart_ff_empty(int line)
|
||||
{
|
||||
return (line == 1) ? (0x40) : (0x100);
|
||||
}
|
||||
struct sirfsoc_uart_register sirfsoc_usp = {
|
||||
.uart_reg = {
|
||||
.sirfsoc_mode1 = 0x0000,
|
||||
.sirfsoc_mode2 = 0x0004,
|
||||
.sirfsoc_tx_frame_ctrl = 0x0008,
|
||||
.sirfsoc_rx_frame_ctrl = 0x000c,
|
||||
.sirfsoc_tx_rx_en = 0x0010,
|
||||
.sirfsoc_int_en_reg = 0x0014,
|
||||
.sirfsoc_int_st_reg = 0x0018,
|
||||
.sirfsoc_async_param_reg = 0x0024,
|
||||
.sirfsoc_tx_dma_io_ctrl = 0x0100,
|
||||
.sirfsoc_tx_dma_io_len = 0x0104,
|
||||
.sirfsoc_tx_fifo_ctrl = 0x0108,
|
||||
.sirfsoc_tx_fifo_level_chk = 0x010c,
|
||||
.sirfsoc_tx_fifo_op = 0x0110,
|
||||
.sirfsoc_tx_fifo_status = 0x0114,
|
||||
.sirfsoc_tx_fifo_data = 0x0118,
|
||||
.sirfsoc_rx_dma_io_ctrl = 0x0120,
|
||||
.sirfsoc_rx_dma_io_len = 0x0124,
|
||||
.sirfsoc_rx_fifo_ctrl = 0x0128,
|
||||
.sirfsoc_rx_fifo_level_chk = 0x012c,
|
||||
.sirfsoc_rx_fifo_op = 0x0130,
|
||||
.sirfsoc_rx_fifo_status = 0x0134,
|
||||
.sirfsoc_rx_fifo_data = 0x0138,
|
||||
},
|
||||
.uart_int_en = {
|
||||
.sirfsoc_rx_done_en = BIT(0),
|
||||
.sirfsoc_tx_done_en = BIT(1),
|
||||
.sirfsoc_rx_oflow_en = BIT(2),
|
||||
.sirfsoc_tx_allout_en = BIT(3),
|
||||
.sirfsoc_rx_io_dma_en = BIT(4),
|
||||
.sirfsoc_tx_io_dma_en = BIT(5),
|
||||
.sirfsoc_rxfifo_full_en = BIT(6),
|
||||
.sirfsoc_txfifo_empty_en = BIT(7),
|
||||
.sirfsoc_rxfifo_thd_en = BIT(8),
|
||||
.sirfsoc_txfifo_thd_en = BIT(9),
|
||||
.sirfsoc_frm_err_en = BIT(10),
|
||||
.sirfsoc_rx_timeout_en = BIT(11),
|
||||
.sirfsoc_rxd_brk_en = BIT(15),
|
||||
},
|
||||
.uart_int_st = {
|
||||
.sirfsoc_rx_done = BIT(0),
|
||||
.sirfsoc_tx_done = BIT(1),
|
||||
.sirfsoc_rx_oflow = BIT(2),
|
||||
.sirfsoc_tx_allout = BIT(3),
|
||||
.sirfsoc_rx_io_dma = BIT(4),
|
||||
.sirfsoc_tx_io_dma = BIT(5),
|
||||
.sirfsoc_rxfifo_full = BIT(6),
|
||||
.sirfsoc_txfifo_empty = BIT(7),
|
||||
.sirfsoc_rxfifo_thd = BIT(8),
|
||||
.sirfsoc_txfifo_thd = BIT(9),
|
||||
.sirfsoc_frm_err = BIT(10),
|
||||
.sirfsoc_rx_timeout = BIT(11),
|
||||
.sirfsoc_rxd_brk = BIT(15),
|
||||
},
|
||||
.fifo_status = {
|
||||
.ff_full = usp_ff_full,
|
||||
.ff_empty = usp_ff_empty,
|
||||
},
|
||||
.uart_param = {
|
||||
.uart_name = "ttySiRF",
|
||||
.port_name = "sirfsoc-uart",
|
||||
.uart_nr = 2,
|
||||
.register_uart_nr = 3,
|
||||
},
|
||||
};
|
||||
|
||||
struct sirfsoc_uart_register sirfsoc_uart = {
|
||||
.uart_reg = {
|
||||
.sirfsoc_line_ctrl = 0x0040,
|
||||
.sirfsoc_tx_rx_en = 0x004c,
|
||||
.sirfsoc_divisor = 0x0050,
|
||||
.sirfsoc_int_en_reg = 0x0054,
|
||||
.sirfsoc_int_st_reg = 0x0058,
|
||||
.sirfsoc_tx_dma_io_ctrl = 0x0100,
|
||||
.sirfsoc_tx_dma_io_len = 0x0104,
|
||||
.sirfsoc_tx_fifo_ctrl = 0x0108,
|
||||
.sirfsoc_tx_fifo_level_chk = 0x010c,
|
||||
.sirfsoc_tx_fifo_op = 0x0110,
|
||||
.sirfsoc_tx_fifo_status = 0x0114,
|
||||
.sirfsoc_tx_fifo_data = 0x0118,
|
||||
.sirfsoc_rx_dma_io_ctrl = 0x0120,
|
||||
.sirfsoc_rx_dma_io_len = 0x0124,
|
||||
.sirfsoc_rx_fifo_ctrl = 0x0128,
|
||||
.sirfsoc_rx_fifo_level_chk = 0x012c,
|
||||
.sirfsoc_rx_fifo_op = 0x0130,
|
||||
.sirfsoc_rx_fifo_status = 0x0134,
|
||||
.sirfsoc_rx_fifo_data = 0x0138,
|
||||
.sirfsoc_afc_ctrl = 0x0140,
|
||||
.sirfsoc_swh_dma_io = 0x0148,
|
||||
},
|
||||
.uart_int_en = {
|
||||
.sirfsoc_rx_done_en = BIT(0),
|
||||
.sirfsoc_tx_done_en = BIT(1),
|
||||
.sirfsoc_rx_oflow_en = BIT(2),
|
||||
.sirfsoc_tx_allout_en = BIT(3),
|
||||
.sirfsoc_rx_io_dma_en = BIT(4),
|
||||
.sirfsoc_tx_io_dma_en = BIT(5),
|
||||
.sirfsoc_rxfifo_full_en = BIT(6),
|
||||
.sirfsoc_txfifo_empty_en = BIT(7),
|
||||
.sirfsoc_rxfifo_thd_en = BIT(8),
|
||||
.sirfsoc_txfifo_thd_en = BIT(9),
|
||||
.sirfsoc_frm_err_en = BIT(10),
|
||||
.sirfsoc_rxd_brk_en = BIT(11),
|
||||
.sirfsoc_rx_timeout_en = BIT(12),
|
||||
.sirfsoc_parity_err_en = BIT(13),
|
||||
.sirfsoc_cts_en = BIT(14),
|
||||
.sirfsoc_rts_en = BIT(15),
|
||||
},
|
||||
.uart_int_st = {
|
||||
.sirfsoc_rx_done = BIT(0),
|
||||
.sirfsoc_tx_done = BIT(1),
|
||||
.sirfsoc_rx_oflow = BIT(2),
|
||||
.sirfsoc_tx_allout = BIT(3),
|
||||
.sirfsoc_rx_io_dma = BIT(4),
|
||||
.sirfsoc_tx_io_dma = BIT(5),
|
||||
.sirfsoc_rxfifo_full = BIT(6),
|
||||
.sirfsoc_txfifo_empty = BIT(7),
|
||||
.sirfsoc_rxfifo_thd = BIT(8),
|
||||
.sirfsoc_txfifo_thd = BIT(9),
|
||||
.sirfsoc_frm_err = BIT(10),
|
||||
.sirfsoc_rxd_brk = BIT(11),
|
||||
.sirfsoc_rx_timeout = BIT(12),
|
||||
.sirfsoc_parity_err = BIT(13),
|
||||
.sirfsoc_cts = BIT(14),
|
||||
.sirfsoc_rts = BIT(15),
|
||||
},
|
||||
.fifo_status = {
|
||||
.ff_full = uart_ff_full,
|
||||
.ff_empty = uart_ff_empty,
|
||||
},
|
||||
.uart_param = {
|
||||
.uart_name = "ttySiRF",
|
||||
.port_name = "sirfsoc_uart",
|
||||
.uart_nr = 3,
|
||||
.register_uart_nr = 0,
|
||||
},
|
||||
};
|
||||
/* uart io ctrl */
|
||||
#define SIRFUART_DATA_BIT_LEN_MASK 0x3
|
||||
#define SIRFUART_DATA_BIT_LEN_5 BIT(0)
|
||||
#define SIRFUART_DATA_BIT_LEN_6 1
|
||||
|
@ -50,96 +279,93 @@
|
|||
#define SIRFUART_LOOP_BACK BIT(7)
|
||||
#define SIRFUART_PARITY_MASK (7 << 3)
|
||||
#define SIRFUART_DUMMY_READ BIT(16)
|
||||
|
||||
#define SIRFSOC_UART_RX_TIMEOUT(br, to) (((br) * (((to) + 999) / 1000)) / 1000)
|
||||
#define SIRFUART_RECV_TIMEOUT_MASK (0xFFFF << 16)
|
||||
#define SIRFUART_RECV_TIMEOUT(x) (((x) & 0xFFFF) << 16)
|
||||
|
||||
/* UART Auto Flow Control */
|
||||
#define SIRFUART_AFC_RX_THD_MASK 0x000000FF
|
||||
#define SIRFUART_AFC_CTRL_RX_THD 0x70
|
||||
#define SIRFUART_AFC_RX_EN BIT(8)
|
||||
#define SIRFUART_AFC_TX_EN BIT(9)
|
||||
#define SIRFUART_CTS_CTRL BIT(10)
|
||||
#define SIRFUART_RTS_CTRL BIT(11)
|
||||
#define SIRFUART_CTS_IN_STATUS BIT(12)
|
||||
#define SIRFUART_RTS_OUT_STATUS BIT(13)
|
||||
|
||||
/* UART Interrupt Enable Register */
|
||||
#define SIRFUART_RX_DONE_INT BIT(0)
|
||||
#define SIRFUART_TX_DONE_INT BIT(1)
|
||||
#define SIRFUART_RX_OFLOW_INT BIT(2)
|
||||
#define SIRFUART_TX_ALLOUT_INT BIT(3)
|
||||
#define SIRFUART_RX_IO_DMA_INT BIT(4)
|
||||
#define SIRFUART_TX_IO_DMA_INT BIT(5)
|
||||
#define SIRFUART_RXFIFO_FULL_INT BIT(6)
|
||||
#define SIRFUART_TXFIFO_EMPTY_INT BIT(7)
|
||||
#define SIRFUART_RXFIFO_THD_INT BIT(8)
|
||||
#define SIRFUART_TXFIFO_THD_INT BIT(9)
|
||||
#define SIRFUART_FRM_ERR_INT BIT(10)
|
||||
#define SIRFUART_RXD_BREAK_INT BIT(11)
|
||||
#define SIRFUART_RX_TIMEOUT_INT BIT(12)
|
||||
#define SIRFUART_PARITY_ERR_INT BIT(13)
|
||||
#define SIRFUART_CTS_INT_EN BIT(14)
|
||||
#define SIRFUART_RTS_INT_EN BIT(15)
|
||||
|
||||
/* UART Interrupt Status Register */
|
||||
#define SIRFUART_RX_DONE BIT(0)
|
||||
#define SIRFUART_TX_DONE BIT(1)
|
||||
#define SIRFUART_RX_OFLOW BIT(2)
|
||||
#define SIRFUART_TX_ALL_EMPTY BIT(3)
|
||||
#define SIRFUART_DMA_IO_RX_DONE BIT(4)
|
||||
#define SIRFUART_DMA_IO_TX_DONE BIT(5)
|
||||
#define SIRFUART_RXFIFO_FULL BIT(6)
|
||||
#define SIRFUART_TXFIFO_EMPTY BIT(7)
|
||||
#define SIRFUART_RXFIFO_THD_REACH BIT(8)
|
||||
#define SIRFUART_TXFIFO_THD_REACH BIT(9)
|
||||
#define SIRFUART_FRM_ERR BIT(10)
|
||||
#define SIRFUART_RXD_BREAK BIT(11)
|
||||
#define SIRFUART_RX_TIMEOUT BIT(12)
|
||||
#define SIRFUART_PARITY_ERR BIT(13)
|
||||
#define SIRFUART_CTS_CHANGE BIT(14)
|
||||
#define SIRFUART_RTS_CHANGE BIT(15)
|
||||
#define SIRFUART_PLUG_IN BIT(16)
|
||||
|
||||
#define SIRFUART_ERR_INT_STAT \
|
||||
(SIRFUART_RX_OFLOW | \
|
||||
SIRFUART_FRM_ERR | \
|
||||
SIRFUART_RXD_BREAK | \
|
||||
SIRFUART_PARITY_ERR)
|
||||
#define SIRFUART_ERR_INT_EN \
|
||||
(SIRFUART_RX_OFLOW_INT | \
|
||||
SIRFUART_FRM_ERR_INT | \
|
||||
SIRFUART_RXD_BREAK_INT | \
|
||||
SIRFUART_PARITY_ERR_INT)
|
||||
#define SIRFUART_TX_INT_EN SIRFUART_TXFIFO_EMPTY_INT
|
||||
#define SIRFUART_RX_IO_INT_EN \
|
||||
(SIRFUART_RX_TIMEOUT_INT | \
|
||||
SIRFUART_RXFIFO_THD_INT | \
|
||||
SIRFUART_RXFIFO_FULL_INT | \
|
||||
SIRFUART_ERR_INT_EN)
|
||||
|
||||
#define SIRFUART_AFC_CTS_CTRL BIT(10)
|
||||
#define SIRFUART_AFC_RTS_CTRL BIT(11)
|
||||
#define SIRFUART_AFC_CTS_STATUS BIT(12)
|
||||
#define SIRFUART_AFC_RTS_STATUS BIT(13)
|
||||
/* UART FIFO Register */
|
||||
#define SIRFUART_TX_FIFO_STOP 0x0
|
||||
#define SIRFUART_TX_FIFO_RESET 0x1
|
||||
#define SIRFUART_TX_FIFO_START 0x2
|
||||
#define SIRFUART_RX_FIFO_STOP 0x0
|
||||
#define SIRFUART_RX_FIFO_RESET 0x1
|
||||
#define SIRFUART_RX_FIFO_START 0x2
|
||||
#define SIRFUART_TX_MODE_DMA 0
|
||||
#define SIRFUART_TX_MODE_IO 1
|
||||
#define SIRFUART_RX_MODE_DMA 0
|
||||
#define SIRFUART_RX_MODE_IO 1
|
||||
#define SIRFUART_FIFO_STOP 0x0
|
||||
#define SIRFUART_FIFO_RESET BIT(0)
|
||||
#define SIRFUART_FIFO_START BIT(1)
|
||||
|
||||
#define SIRFUART_RX_EN 0x1
|
||||
#define SIRFUART_TX_EN 0x2
|
||||
#define SIRFUART_RX_EN BIT(0)
|
||||
#define SIRFUART_TX_EN BIT(1)
|
||||
|
||||
#define SIRFUART_IO_MODE BIT(0)
|
||||
#define SIRFUART_DMA_MODE 0x0
|
||||
|
||||
/* Macro Specific*/
|
||||
#define SIRFUART_INT_EN_CLR 0x0060
|
||||
/* Baud Rate Calculation */
|
||||
#define SIRF_MIN_SAMPLE_DIV 0xf
|
||||
#define SIRF_MAX_SAMPLE_DIV 0x3f
|
||||
#define SIRF_IOCLK_DIV_MAX 0xffff
|
||||
#define SIRF_SAMPLE_DIV_SHIFT 16
|
||||
#define SIRF_IOCLK_DIV_MASK 0xffff
|
||||
#define SIRF_SAMPLE_DIV_MASK 0x3f0000
|
||||
#define SIRF_BAUD_RATE_SUPPORT_NR 18
|
||||
|
||||
/* USP SPEC */
|
||||
#define SIRFSOC_USP_ENDIAN_CTRL_LSBF BIT(4)
|
||||
#define SIRFSOC_USP_EN BIT(5)
|
||||
#define SIRFSOC_USP_MODE2_RXD_DELAY_OFFSET 0
|
||||
#define SIRFSOC_USP_MODE2_TXD_DELAY_OFFSET 8
|
||||
#define SIRFSOC_USP_MODE2_CLK_DIVISOR_MASK 0x3ff
|
||||
#define SIRFSOC_USP_MODE2_CLK_DIVISOR_OFFSET 21
|
||||
#define SIRFSOC_USP_TX_DATA_LEN_OFFSET 0
|
||||
#define SIRFSOC_USP_TX_SYNC_LEN_OFFSET 8
|
||||
#define SIRFSOC_USP_TX_FRAME_LEN_OFFSET 16
|
||||
#define SIRFSOC_USP_TX_SHIFTER_LEN_OFFSET 24
|
||||
#define SIRFSOC_USP_TX_CLK_DIVISOR_OFFSET 30
|
||||
#define SIRFSOC_USP_RX_DATA_LEN_OFFSET 0
|
||||
#define SIRFSOC_USP_RX_FRAME_LEN_OFFSET 8
|
||||
#define SIRFSOC_USP_RX_SHIFTER_LEN_OFFSET 16
|
||||
#define SIRFSOC_USP_RX_CLK_DIVISOR_OFFSET 24
|
||||
#define SIRFSOC_USP_ASYNC_DIV2_MASK 0x3f
|
||||
#define SIRFSOC_USP_ASYNC_DIV2_OFFSET 16
|
||||
|
||||
/* USP-UART Common */
|
||||
#define SIRFSOC_UART_RX_TIMEOUT(br, to) (((br) * (((to) + 999) / 1000)) / 1000)
|
||||
#define SIRFUART_RECV_TIMEOUT_VALUE(x) \
|
||||
(((x) > 0xFFFF) ? 0xFFFF : ((x) & 0xFFFF))
|
||||
#define SIRFUART_RECV_TIMEOUT(port, x) \
|
||||
(((port)->line > 2) ? (x & 0xFFFF) : ((x) & 0xFFFF) << 16)
|
||||
|
||||
#define SIRFUART_FIFO_THD(port) ((port->line) == 1 ? 16 : 64)
|
||||
#define SIRFUART_ERR_INT_STAT(port, unit_st) \
|
||||
(uint_st->sirfsoc_rx_oflow | \
|
||||
uint_st->sirfsoc_frm_err | \
|
||||
uint_st->sirfsoc_rxd_brk | \
|
||||
((port->line > 2) ? 0 : uint_st->sirfsoc_parity_err))
|
||||
#define SIRFUART_RX_IO_INT_EN(port, uint_en) \
|
||||
(uint_en->sirfsoc_rx_timeout_en |\
|
||||
uint_en->sirfsoc_rxfifo_thd_en |\
|
||||
uint_en->sirfsoc_rxfifo_full_en |\
|
||||
uint_en->sirfsoc_frm_err_en |\
|
||||
uint_en->sirfsoc_rx_oflow_en |\
|
||||
uint_en->sirfsoc_rxd_brk_en |\
|
||||
((port->line > 2) ? 0 : uint_en->sirfsoc_parity_err_en))
|
||||
#define SIRFUART_RX_IO_INT_ST(uint_st) \
|
||||
(uint_st->sirfsoc_rx_timeout |\
|
||||
uint_st->sirfsoc_rxfifo_thd |\
|
||||
uint_st->sirfsoc_rxfifo_full)
|
||||
#define SIRFUART_CTS_INT_ST(uint_st) (uint_st->sirfsoc_cts)
|
||||
#define SIRFUART_RX_DMA_INT_EN(port, uint_en) \
|
||||
(uint_en->sirfsoc_rx_timeout_en |\
|
||||
uint_en->sirfsoc_frm_err_en |\
|
||||
uint_en->sirfsoc_rx_oflow_en |\
|
||||
uint_en->sirfsoc_rxd_brk_en |\
|
||||
((port->line > 2) ? 0 : uint_en->sirfsoc_parity_err_en))
|
||||
/* Generic Definitions */
|
||||
#define SIRFSOC_UART_NAME "ttySiRF"
|
||||
#define SIRFSOC_UART_MAJOR 0
|
||||
#define SIRFSOC_UART_MINOR 0
|
||||
#define SIRFUART_PORT_NAME "sirfsoc-uart"
|
||||
#define SIRFUART_MAP_SIZE 0x200
|
||||
#define SIRFSOC_UART_NR 5
|
||||
#define SIRFSOC_UART_NR 6
|
||||
#define SIRFSOC_PORT_TYPE 0xa5
|
||||
|
||||
/* Baud Rate Calculation */
|
||||
|
@ -151,19 +377,80 @@
|
|||
#define SIRF_SAMPLE_DIV_MASK 0x3f0000
|
||||
#define SIRF_BAUD_RATE_SUPPORT_NR 18
|
||||
|
||||
/* Uart Common Use Macro*/
|
||||
#define SIRFSOC_RX_DMA_BUF_SIZE 256
|
||||
#define BYTES_TO_ALIGN(dma_addr) ((unsigned long)(dma_addr) & 0x3)
|
||||
#define LOOP_DMA_BUFA_FILL 1
|
||||
#define LOOP_DMA_BUFB_FILL 2
|
||||
#define TX_TRAN_PIO 1
|
||||
#define TX_TRAN_DMA 2
|
||||
/* Uart Fifo Level Chk */
|
||||
#define SIRFUART_TX_FIFO_SC_OFFSET 0
|
||||
#define SIRFUART_TX_FIFO_LC_OFFSET 10
|
||||
#define SIRFUART_TX_FIFO_HC_OFFSET 20
|
||||
#define SIRFUART_TX_FIFO_CHK_SC(line, value) ((((line) == 1) ? (value & 0x3) :\
|
||||
(value & 0x1f)) << SIRFUART_TX_FIFO_SC_OFFSET)
|
||||
#define SIRFUART_TX_FIFO_CHK_LC(line, value) ((((line) == 1) ? (value & 0x3) :\
|
||||
(value & 0x1f)) << SIRFUART_TX_FIFO_LC_OFFSET)
|
||||
#define SIRFUART_TX_FIFO_CHK_HC(line, value) ((((line) == 1) ? (value & 0x3) :\
|
||||
(value & 0x1f)) << SIRFUART_TX_FIFO_HC_OFFSET)
|
||||
|
||||
#define SIRFUART_RX_FIFO_CHK_SC SIRFUART_TX_FIFO_CHK_SC
|
||||
#define SIRFUART_RX_FIFO_CHK_LC SIRFUART_TX_FIFO_CHK_LC
|
||||
#define SIRFUART_RX_FIFO_CHK_HC SIRFUART_TX_FIFO_CHK_HC
|
||||
/* Indicate how many buffers used */
|
||||
#define SIRFSOC_RX_LOOP_BUF_CNT 2
|
||||
|
||||
/* Indicate if DMA channel valid */
|
||||
#define IS_DMA_CHAN_VALID(x) ((x) != -1)
|
||||
#define UNVALID_DMA_CHAN -1
|
||||
/* For Fast Baud Rate Calculation */
|
||||
struct sirfsoc_baudrate_to_regv {
|
||||
unsigned int baud_rate;
|
||||
unsigned int reg_val;
|
||||
};
|
||||
|
||||
enum sirfsoc_tx_state {
|
||||
TX_DMA_IDLE,
|
||||
TX_DMA_RUNNING,
|
||||
TX_DMA_PAUSE,
|
||||
};
|
||||
|
||||
struct sirfsoc_loop_buffer {
|
||||
struct circ_buf xmit;
|
||||
dma_cookie_t cookie;
|
||||
struct dma_async_tx_descriptor *desc;
|
||||
dma_addr_t dma_addr;
|
||||
};
|
||||
|
||||
struct sirfsoc_uart_port {
|
||||
unsigned char hw_flow_ctrl;
|
||||
unsigned char ms_enabled;
|
||||
bool hw_flow_ctrl;
|
||||
bool ms_enabled;
|
||||
|
||||
struct uart_port port;
|
||||
struct pinctrl *p;
|
||||
struct clk *clk;
|
||||
/* for SiRFmarco, there are SET/CLR for UART_INT_EN */
|
||||
bool is_marco;
|
||||
struct sirfsoc_uart_register *uart_reg;
|
||||
int rx_dma_no;
|
||||
int tx_dma_no;
|
||||
struct dma_chan *rx_dma_chan;
|
||||
struct dma_chan *tx_dma_chan;
|
||||
dma_addr_t tx_dma_addr;
|
||||
struct dma_async_tx_descriptor *tx_dma_desc;
|
||||
spinlock_t rx_lock;
|
||||
spinlock_t tx_lock;
|
||||
struct tasklet_struct rx_dma_complete_tasklet;
|
||||
struct tasklet_struct rx_tmo_process_tasklet;
|
||||
unsigned int rx_io_count;
|
||||
unsigned long transfer_size;
|
||||
enum sirfsoc_tx_state tx_dma_state;
|
||||
unsigned int cts_gpio;
|
||||
unsigned int rts_gpio;
|
||||
|
||||
struct sirfsoc_loop_buffer rx_dma_items[SIRFSOC_RX_LOOP_BUF_CNT];
|
||||
int rx_completed;
|
||||
int rx_issued;
|
||||
};
|
||||
|
||||
/* Hardware Flow Control */
|
||||
|
|
|
@ -0,0 +1,932 @@
|
|||
/*
|
||||
* st-asc.c: ST Asynchronous serial controller (ASC) driver
|
||||
*
|
||||
* Copyright (C) 2003-2013 STMicroelectronics (R&D) Limited
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#if defined(CONFIG_SERIAL_ST_ASC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
|
||||
#define SUPPORT_SYSRQ
|
||||
#endif
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/serial.h>
|
||||
#include <linux/console.h>
|
||||
#include <linux/sysrq.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/tty.h>
|
||||
#include <linux/tty_flip.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/serial_core.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#define DRIVER_NAME "st-asc"
|
||||
#define ASC_SERIAL_NAME "ttyAS"
|
||||
#define ASC_FIFO_SIZE 16
|
||||
#define ASC_MAX_PORTS 8
|
||||
|
||||
struct asc_port {
|
||||
struct uart_port port;
|
||||
struct clk *clk;
|
||||
unsigned int hw_flow_control:1;
|
||||
unsigned int force_m1:1;
|
||||
};
|
||||
|
||||
static struct asc_port asc_ports[ASC_MAX_PORTS];
|
||||
static struct uart_driver asc_uart_driver;
|
||||
|
||||
/*---- UART Register definitions ------------------------------*/
|
||||
|
||||
/* Register offsets */
|
||||
|
||||
#define ASC_BAUDRATE 0x00
|
||||
#define ASC_TXBUF 0x04
|
||||
#define ASC_RXBUF 0x08
|
||||
#define ASC_CTL 0x0C
|
||||
#define ASC_INTEN 0x10
|
||||
#define ASC_STA 0x14
|
||||
#define ASC_GUARDTIME 0x18
|
||||
#define ASC_TIMEOUT 0x1C
|
||||
#define ASC_TXRESET 0x20
|
||||
#define ASC_RXRESET 0x24
|
||||
#define ASC_RETRIES 0x28
|
||||
|
||||
/* ASC_RXBUF */
|
||||
#define ASC_RXBUF_PE 0x100
|
||||
#define ASC_RXBUF_FE 0x200
|
||||
/**
|
||||
* Some of status comes from higher bits of the character and some come from
|
||||
* the status register. Combining both of them in to single status using dummy
|
||||
* bits.
|
||||
*/
|
||||
#define ASC_RXBUF_DUMMY_RX 0x10000
|
||||
#define ASC_RXBUF_DUMMY_BE 0x20000
|
||||
#define ASC_RXBUF_DUMMY_OE 0x40000
|
||||
|
||||
/* ASC_CTL */
|
||||
|
||||
#define ASC_CTL_MODE_MSK 0x0007
|
||||
#define ASC_CTL_MODE_8BIT 0x0001
|
||||
#define ASC_CTL_MODE_7BIT_PAR 0x0003
|
||||
#define ASC_CTL_MODE_9BIT 0x0004
|
||||
#define ASC_CTL_MODE_8BIT_WKUP 0x0005
|
||||
#define ASC_CTL_MODE_8BIT_PAR 0x0007
|
||||
#define ASC_CTL_STOP_MSK 0x0018
|
||||
#define ASC_CTL_STOP_HALFBIT 0x0000
|
||||
#define ASC_CTL_STOP_1BIT 0x0008
|
||||
#define ASC_CTL_STOP_1_HALFBIT 0x0010
|
||||
#define ASC_CTL_STOP_2BIT 0x0018
|
||||
#define ASC_CTL_PARITYODD 0x0020
|
||||
#define ASC_CTL_LOOPBACK 0x0040
|
||||
#define ASC_CTL_RUN 0x0080
|
||||
#define ASC_CTL_RXENABLE 0x0100
|
||||
#define ASC_CTL_SCENABLE 0x0200
|
||||
#define ASC_CTL_FIFOENABLE 0x0400
|
||||
#define ASC_CTL_CTSENABLE 0x0800
|
||||
#define ASC_CTL_BAUDMODE 0x1000
|
||||
|
||||
/* ASC_GUARDTIME */
|
||||
|
||||
#define ASC_GUARDTIME_MSK 0x00FF
|
||||
|
||||
/* ASC_INTEN */
|
||||
|
||||
#define ASC_INTEN_RBE 0x0001
|
||||
#define ASC_INTEN_TE 0x0002
|
||||
#define ASC_INTEN_THE 0x0004
|
||||
#define ASC_INTEN_PE 0x0008
|
||||
#define ASC_INTEN_FE 0x0010
|
||||
#define ASC_INTEN_OE 0x0020
|
||||
#define ASC_INTEN_TNE 0x0040
|
||||
#define ASC_INTEN_TOI 0x0080
|
||||
#define ASC_INTEN_RHF 0x0100
|
||||
|
||||
/* ASC_RETRIES */
|
||||
|
||||
#define ASC_RETRIES_MSK 0x00FF
|
||||
|
||||
/* ASC_RXBUF */
|
||||
|
||||
#define ASC_RXBUF_MSK 0x03FF
|
||||
|
||||
/* ASC_STA */
|
||||
|
||||
#define ASC_STA_RBF 0x0001
|
||||
#define ASC_STA_TE 0x0002
|
||||
#define ASC_STA_THE 0x0004
|
||||
#define ASC_STA_PE 0x0008
|
||||
#define ASC_STA_FE 0x0010
|
||||
#define ASC_STA_OE 0x0020
|
||||
#define ASC_STA_TNE 0x0040
|
||||
#define ASC_STA_TOI 0x0080
|
||||
#define ASC_STA_RHF 0x0100
|
||||
#define ASC_STA_TF 0x0200
|
||||
#define ASC_STA_NKD 0x0400
|
||||
|
||||
/* ASC_TIMEOUT */
|
||||
|
||||
#define ASC_TIMEOUT_MSK 0x00FF
|
||||
|
||||
/* ASC_TXBUF */
|
||||
|
||||
#define ASC_TXBUF_MSK 0x01FF
|
||||
|
||||
/*---- Inline function definitions ---------------------------*/
|
||||
|
||||
static inline struct asc_port *to_asc_port(struct uart_port *port)
|
||||
{
|
||||
return container_of(port, struct asc_port, port);
|
||||
}
|
||||
|
||||
static inline u32 asc_in(struct uart_port *port, u32 offset)
|
||||
{
|
||||
return readl(port->membase + offset);
|
||||
}
|
||||
|
||||
static inline void asc_out(struct uart_port *port, u32 offset, u32 value)
|
||||
{
|
||||
writel(value, port->membase + offset);
|
||||
}
|
||||
|
||||
/*
|
||||
* Some simple utility functions to enable and disable interrupts.
|
||||
* Note that these need to be called with interrupts disabled.
|
||||
*/
|
||||
static inline void asc_disable_tx_interrupts(struct uart_port *port)
|
||||
{
|
||||
u32 intenable = asc_in(port, ASC_INTEN) & ~ASC_INTEN_THE;
|
||||
asc_out(port, ASC_INTEN, intenable);
|
||||
(void)asc_in(port, ASC_INTEN); /* Defeat bus write posting */
|
||||
}
|
||||
|
||||
static inline void asc_enable_tx_interrupts(struct uart_port *port)
|
||||
{
|
||||
u32 intenable = asc_in(port, ASC_INTEN) | ASC_INTEN_THE;
|
||||
asc_out(port, ASC_INTEN, intenable);
|
||||
}
|
||||
|
||||
static inline void asc_disable_rx_interrupts(struct uart_port *port)
|
||||
{
|
||||
u32 intenable = asc_in(port, ASC_INTEN) & ~ASC_INTEN_RBE;
|
||||
asc_out(port, ASC_INTEN, intenable);
|
||||
(void)asc_in(port, ASC_INTEN); /* Defeat bus write posting */
|
||||
}
|
||||
|
||||
static inline void asc_enable_rx_interrupts(struct uart_port *port)
|
||||
{
|
||||
u32 intenable = asc_in(port, ASC_INTEN) | ASC_INTEN_RBE;
|
||||
asc_out(port, ASC_INTEN, intenable);
|
||||
}
|
||||
|
||||
static inline u32 asc_txfifo_is_empty(struct uart_port *port)
|
||||
{
|
||||
return asc_in(port, ASC_STA) & ASC_STA_TE;
|
||||
}
|
||||
|
||||
static inline int asc_txfifo_is_full(struct uart_port *port)
|
||||
{
|
||||
return asc_in(port, ASC_STA) & ASC_STA_TF;
|
||||
}
|
||||
|
||||
static inline const char *asc_port_name(struct uart_port *port)
|
||||
{
|
||||
return to_platform_device(port->dev)->name;
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* This section contains code to support the use of the ASC as a
|
||||
* generic serial port.
|
||||
*/
|
||||
|
||||
static inline unsigned asc_hw_txroom(struct uart_port *port)
|
||||
{
|
||||
u32 status = asc_in(port, ASC_STA);
|
||||
|
||||
if (status & ASC_STA_THE)
|
||||
return port->fifosize / 2;
|
||||
else if (!(status & ASC_STA_TF))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Start transmitting chars.
|
||||
* This is called from both interrupt and task level.
|
||||
* Either way interrupts are disabled.
|
||||
*/
|
||||
static void asc_transmit_chars(struct uart_port *port)
|
||||
{
|
||||
struct circ_buf *xmit = &port->state->xmit;
|
||||
int txroom;
|
||||
unsigned char c;
|
||||
|
||||
txroom = asc_hw_txroom(port);
|
||||
|
||||
if ((txroom != 0) && port->x_char) {
|
||||
c = port->x_char;
|
||||
port->x_char = 0;
|
||||
asc_out(port, ASC_TXBUF, c);
|
||||
port->icount.tx++;
|
||||
txroom = asc_hw_txroom(port);
|
||||
}
|
||||
|
||||
if (uart_tx_stopped(port)) {
|
||||
/*
|
||||
* We should try and stop the hardware here, but I
|
||||
* don't think the ASC has any way to do that.
|
||||
*/
|
||||
asc_disable_tx_interrupts(port);
|
||||
return;
|
||||
}
|
||||
|
||||
if (uart_circ_empty(xmit)) {
|
||||
asc_disable_tx_interrupts(port);
|
||||
return;
|
||||
}
|
||||
|
||||
if (txroom == 0)
|
||||
return;
|
||||
|
||||
do {
|
||||
c = xmit->buf[xmit->tail];
|
||||
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
|
||||
asc_out(port, ASC_TXBUF, c);
|
||||
port->icount.tx++;
|
||||
txroom--;
|
||||
} while ((txroom > 0) && (!uart_circ_empty(xmit)));
|
||||
|
||||
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
|
||||
uart_write_wakeup(port);
|
||||
|
||||
if (uart_circ_empty(xmit))
|
||||
asc_disable_tx_interrupts(port);
|
||||
}
|
||||
|
||||
static void asc_receive_chars(struct uart_port *port)
|
||||
{
|
||||
struct tty_port *tport = &port->state->port;
|
||||
unsigned long status;
|
||||
unsigned long c = 0;
|
||||
char flag;
|
||||
|
||||
if (port->irq_wake)
|
||||
pm_wakeup_event(tport->tty->dev, 0);
|
||||
|
||||
while ((status = asc_in(port, ASC_STA)) & ASC_STA_RBF) {
|
||||
c = asc_in(port, ASC_RXBUF) | ASC_RXBUF_DUMMY_RX;
|
||||
flag = TTY_NORMAL;
|
||||
port->icount.rx++;
|
||||
|
||||
if ((c & (ASC_RXBUF_FE | ASC_RXBUF_PE)) ||
|
||||
status & ASC_STA_OE) {
|
||||
|
||||
if (c & ASC_RXBUF_FE) {
|
||||
if (c == ASC_RXBUF_FE) {
|
||||
port->icount.brk++;
|
||||
if (uart_handle_break(port))
|
||||
continue;
|
||||
c |= ASC_RXBUF_DUMMY_BE;
|
||||
} else {
|
||||
port->icount.frame++;
|
||||
}
|
||||
} else if (c & ASC_RXBUF_PE) {
|
||||
port->icount.parity++;
|
||||
}
|
||||
/*
|
||||
* Reading any data from the RX FIFO clears the
|
||||
* overflow error condition.
|
||||
*/
|
||||
if (status & ASC_STA_OE) {
|
||||
port->icount.overrun++;
|
||||
c |= ASC_RXBUF_DUMMY_OE;
|
||||
}
|
||||
|
||||
c &= port->read_status_mask;
|
||||
|
||||
if (c & ASC_RXBUF_DUMMY_BE)
|
||||
flag = TTY_BREAK;
|
||||
else if (c & ASC_RXBUF_PE)
|
||||
flag = TTY_PARITY;
|
||||
else if (c & ASC_RXBUF_FE)
|
||||
flag = TTY_FRAME;
|
||||
}
|
||||
|
||||
if (uart_handle_sysrq_char(port, c))
|
||||
continue;
|
||||
|
||||
uart_insert_char(port, c, ASC_RXBUF_DUMMY_OE, c & 0xff, flag);
|
||||
}
|
||||
|
||||
/* Tell the rest of the system the news. New characters! */
|
||||
tty_flip_buffer_push(tport);
|
||||
}
|
||||
|
||||
static irqreturn_t asc_interrupt(int irq, void *ptr)
|
||||
{
|
||||
struct uart_port *port = ptr;
|
||||
u32 status;
|
||||
|
||||
spin_lock(&port->lock);
|
||||
|
||||
status = asc_in(port, ASC_STA);
|
||||
|
||||
if (status & ASC_STA_RBF) {
|
||||
/* Receive FIFO not empty */
|
||||
asc_receive_chars(port);
|
||||
}
|
||||
|
||||
if ((status & ASC_STA_THE) &&
|
||||
(asc_in(port, ASC_INTEN) & ASC_INTEN_THE)) {
|
||||
/* Transmitter FIFO at least half empty */
|
||||
asc_transmit_chars(port);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* UART Functions
|
||||
*/
|
||||
|
||||
static unsigned int asc_tx_empty(struct uart_port *port)
|
||||
{
|
||||
return asc_txfifo_is_empty(port) ? TIOCSER_TEMT : 0;
|
||||
}
|
||||
|
||||
static void asc_set_mctrl(struct uart_port *port, unsigned int mctrl)
|
||||
{
|
||||
/*
|
||||
* This routine is used for seting signals of: DTR, DCD, CTS/RTS
|
||||
* We use ASC's hardware for CTS/RTS, so don't need any for that.
|
||||
* Some boards have DTR and DCD implemented using PIO pins,
|
||||
* code to do this should be hooked in here.
|
||||
*/
|
||||
}
|
||||
|
||||
static unsigned int asc_get_mctrl(struct uart_port *port)
|
||||
{
|
||||
/*
|
||||
* This routine is used for geting signals of: DTR, DCD, DSR, RI,
|
||||
* and CTS/RTS
|
||||
*/
|
||||
return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
|
||||
}
|
||||
|
||||
/* There are probably characters waiting to be transmitted. */
|
||||
static void asc_start_tx(struct uart_port *port)
|
||||
{
|
||||
struct circ_buf *xmit = &port->state->xmit;
|
||||
|
||||
if (!uart_circ_empty(xmit))
|
||||
asc_enable_tx_interrupts(port);
|
||||
}
|
||||
|
||||
/* Transmit stop */
|
||||
static void asc_stop_tx(struct uart_port *port)
|
||||
{
|
||||
asc_disable_tx_interrupts(port);
|
||||
}
|
||||
|
||||
/* Receive stop */
|
||||
static void asc_stop_rx(struct uart_port *port)
|
||||
{
|
||||
asc_disable_rx_interrupts(port);
|
||||
}
|
||||
|
||||
/* Force modem status interrupts on */
|
||||
static void asc_enable_ms(struct uart_port *port)
|
||||
{
|
||||
/* Nothing here yet .. */
|
||||
}
|
||||
|
||||
/* Handle breaks - ignored by us */
|
||||
static void asc_break_ctl(struct uart_port *port, int break_state)
|
||||
{
|
||||
/* Nothing here yet .. */
|
||||
}
|
||||
|
||||
/*
|
||||
* Enable port for reception.
|
||||
*/
|
||||
static int asc_startup(struct uart_port *port)
|
||||
{
|
||||
if (request_irq(port->irq, asc_interrupt, IRQF_NO_SUSPEND,
|
||||
asc_port_name(port), port)) {
|
||||
dev_err(port->dev, "cannot allocate irq.\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
asc_transmit_chars(port);
|
||||
asc_enable_rx_interrupts(port);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void asc_shutdown(struct uart_port *port)
|
||||
{
|
||||
asc_disable_tx_interrupts(port);
|
||||
asc_disable_rx_interrupts(port);
|
||||
free_irq(port->irq, port);
|
||||
}
|
||||
|
||||
static void asc_pm(struct uart_port *port, unsigned int state,
|
||||
unsigned int oldstate)
|
||||
{
|
||||
struct asc_port *ascport = to_asc_port(port);
|
||||
unsigned long flags = 0;
|
||||
u32 ctl;
|
||||
|
||||
switch (state) {
|
||||
case UART_PM_STATE_ON:
|
||||
clk_prepare_enable(ascport->clk);
|
||||
break;
|
||||
case UART_PM_STATE_OFF:
|
||||
/*
|
||||
* Disable the ASC baud rate generator, which is as close as
|
||||
* we can come to turning it off. Note this is not called with
|
||||
* the port spinlock held.
|
||||
*/
|
||||
spin_lock_irqsave(&port->lock, flags);
|
||||
ctl = asc_in(port, ASC_CTL) & ~ASC_CTL_RUN;
|
||||
asc_out(port, ASC_CTL, ctl);
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
clk_disable_unprepare(ascport->clk);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void asc_set_termios(struct uart_port *port, struct ktermios *termios,
|
||||
struct ktermios *old)
|
||||
{
|
||||
struct asc_port *ascport = to_asc_port(port);
|
||||
unsigned int baud;
|
||||
u32 ctrl_val;
|
||||
tcflag_t cflag;
|
||||
unsigned long flags;
|
||||
|
||||
/* Update termios to reflect hardware capabilities */
|
||||
termios->c_cflag &= ~(CMSPAR |
|
||||
(ascport->hw_flow_control ? 0 : CRTSCTS));
|
||||
|
||||
port->uartclk = clk_get_rate(ascport->clk);
|
||||
|
||||
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
|
||||
cflag = termios->c_cflag;
|
||||
|
||||
spin_lock_irqsave(&port->lock, flags);
|
||||
|
||||
/* read control register */
|
||||
ctrl_val = asc_in(port, ASC_CTL);
|
||||
|
||||
/* stop serial port and reset value */
|
||||
asc_out(port, ASC_CTL, (ctrl_val & ~ASC_CTL_RUN));
|
||||
ctrl_val = ASC_CTL_RXENABLE | ASC_CTL_FIFOENABLE;
|
||||
|
||||
/* reset fifo rx & tx */
|
||||
asc_out(port, ASC_TXRESET, 1);
|
||||
asc_out(port, ASC_RXRESET, 1);
|
||||
|
||||
/* set character length */
|
||||
if ((cflag & CSIZE) == CS7) {
|
||||
ctrl_val |= ASC_CTL_MODE_7BIT_PAR;
|
||||
} else {
|
||||
ctrl_val |= (cflag & PARENB) ? ASC_CTL_MODE_8BIT_PAR :
|
||||
ASC_CTL_MODE_8BIT;
|
||||
}
|
||||
|
||||
/* set stop bit */
|
||||
ctrl_val |= (cflag & CSTOPB) ? ASC_CTL_STOP_2BIT : ASC_CTL_STOP_1BIT;
|
||||
|
||||
/* odd parity */
|
||||
if (cflag & PARODD)
|
||||
ctrl_val |= ASC_CTL_PARITYODD;
|
||||
|
||||
/* hardware flow control */
|
||||
if ((cflag & CRTSCTS))
|
||||
ctrl_val |= ASC_CTL_CTSENABLE;
|
||||
|
||||
if ((baud < 19200) && !ascport->force_m1) {
|
||||
asc_out(port, ASC_BAUDRATE, (port->uartclk / (16 * baud)));
|
||||
} else {
|
||||
/*
|
||||
* MODE 1: recommended for high bit rates (above 19.2K)
|
||||
*
|
||||
* baudrate * 16 * 2^16
|
||||
* ASCBaudRate = ------------------------
|
||||
* inputclock
|
||||
*
|
||||
* However to keep the maths inside 32bits we divide top and
|
||||
* bottom by 64. The +1 is to avoid a divide by zero if the
|
||||
* input clock rate is something unexpected.
|
||||
*/
|
||||
u32 counter = (baud * 16384) / ((port->uartclk / 64) + 1);
|
||||
asc_out(port, ASC_BAUDRATE, counter);
|
||||
ctrl_val |= ASC_CTL_BAUDMODE;
|
||||
}
|
||||
|
||||
uart_update_timeout(port, cflag, baud);
|
||||
|
||||
ascport->port.read_status_mask = ASC_RXBUF_DUMMY_OE;
|
||||
if (termios->c_iflag & INPCK)
|
||||
ascport->port.read_status_mask |= ASC_RXBUF_FE | ASC_RXBUF_PE;
|
||||
if (termios->c_iflag & (BRKINT | PARMRK))
|
||||
ascport->port.read_status_mask |= ASC_RXBUF_DUMMY_BE;
|
||||
|
||||
/*
|
||||
* Characters to ignore
|
||||
*/
|
||||
ascport->port.ignore_status_mask = 0;
|
||||
if (termios->c_iflag & IGNPAR)
|
||||
ascport->port.ignore_status_mask |= ASC_RXBUF_FE | ASC_RXBUF_PE;
|
||||
if (termios->c_iflag & IGNBRK) {
|
||||
ascport->port.ignore_status_mask |= ASC_RXBUF_DUMMY_BE;
|
||||
/*
|
||||
* If we're ignoring parity and break indicators,
|
||||
* ignore overruns too (for real raw support).
|
||||
*/
|
||||
if (termios->c_iflag & IGNPAR)
|
||||
ascport->port.ignore_status_mask |= ASC_RXBUF_DUMMY_OE;
|
||||
}
|
||||
|
||||
/*
|
||||
* Ignore all characters if CREAD is not set.
|
||||
*/
|
||||
if (!(termios->c_cflag & CREAD))
|
||||
ascport->port.ignore_status_mask |= ASC_RXBUF_DUMMY_RX;
|
||||
|
||||
/* Set the timeout */
|
||||
asc_out(port, ASC_TIMEOUT, 20);
|
||||
|
||||
/* write final value and enable port */
|
||||
asc_out(port, ASC_CTL, (ctrl_val | ASC_CTL_RUN));
|
||||
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
}
|
||||
|
||||
static const char *asc_type(struct uart_port *port)
|
||||
{
|
||||
return (port->type == PORT_ASC) ? DRIVER_NAME : NULL;
|
||||
}
|
||||
|
||||
static void asc_release_port(struct uart_port *port)
|
||||
{
|
||||
}
|
||||
|
||||
static int asc_request_port(struct uart_port *port)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Called when the port is opened, and UPF_BOOT_AUTOCONF flag is set
|
||||
* Set type field if successful
|
||||
*/
|
||||
static void asc_config_port(struct uart_port *port, int flags)
|
||||
{
|
||||
if ((flags & UART_CONFIG_TYPE))
|
||||
port->type = PORT_ASC;
|
||||
}
|
||||
|
||||
static int
|
||||
asc_verify_port(struct uart_port *port, struct serial_struct *ser)
|
||||
{
|
||||
/* No user changeable parameters */
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_CONSOLE_POLL
|
||||
/*
|
||||
* Console polling routines for writing and reading from the uart while
|
||||
* in an interrupt or debug context (i.e. kgdb).
|
||||
*/
|
||||
|
||||
static int asc_get_poll_char(struct uart_port *port)
|
||||
{
|
||||
if (!(asc_in(port, ASC_STA) & ASC_STA_RBF))
|
||||
return NO_POLL_CHAR;
|
||||
|
||||
return asc_in(port, ASC_RXBUF);
|
||||
}
|
||||
|
||||
static void asc_put_poll_char(struct uart_port *port, unsigned char c)
|
||||
{
|
||||
while (asc_txfifo_is_full(port))
|
||||
cpu_relax();
|
||||
asc_out(port, ASC_TXBUF, c);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_CONSOLE_POLL */
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
|
||||
static struct uart_ops asc_uart_ops = {
|
||||
.tx_empty = asc_tx_empty,
|
||||
.set_mctrl = asc_set_mctrl,
|
||||
.get_mctrl = asc_get_mctrl,
|
||||
.start_tx = asc_start_tx,
|
||||
.stop_tx = asc_stop_tx,
|
||||
.stop_rx = asc_stop_rx,
|
||||
.enable_ms = asc_enable_ms,
|
||||
.break_ctl = asc_break_ctl,
|
||||
.startup = asc_startup,
|
||||
.shutdown = asc_shutdown,
|
||||
.set_termios = asc_set_termios,
|
||||
.type = asc_type,
|
||||
.release_port = asc_release_port,
|
||||
.request_port = asc_request_port,
|
||||
.config_port = asc_config_port,
|
||||
.verify_port = asc_verify_port,
|
||||
.pm = asc_pm,
|
||||
#ifdef CONFIG_CONSOLE_POLL
|
||||
.poll_get_char = asc_get_poll_char,
|
||||
.poll_put_char = asc_put_poll_char,
|
||||
#endif /* CONFIG_CONSOLE_POLL */
|
||||
};
|
||||
|
||||
static int asc_init_port(struct asc_port *ascport,
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
struct uart_port *port = &ascport->port;
|
||||
struct resource *res;
|
||||
|
||||
port->iotype = UPIO_MEM;
|
||||
port->flags = UPF_BOOT_AUTOCONF;
|
||||
port->ops = &asc_uart_ops;
|
||||
port->fifosize = ASC_FIFO_SIZE;
|
||||
port->dev = &pdev->dev;
|
||||
port->irq = platform_get_irq(pdev, 0);
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
port->membase = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(port->membase))
|
||||
return PTR_ERR(port->membase);
|
||||
port->mapbase = res->start;
|
||||
|
||||
spin_lock_init(&port->lock);
|
||||
|
||||
ascport->clk = devm_clk_get(&pdev->dev, NULL);
|
||||
|
||||
if (WARN_ON(IS_ERR(ascport->clk)))
|
||||
return -EINVAL;
|
||||
/* ensure that clk rate is correct by enabling the clk */
|
||||
clk_prepare_enable(ascport->clk);
|
||||
ascport->port.uartclk = clk_get_rate(ascport->clk);
|
||||
WARN_ON(ascport->port.uartclk == 0);
|
||||
clk_disable_unprepare(ascport->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct asc_port *asc_of_get_asc_port(struct platform_device *pdev)
|
||||
{
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
int id;
|
||||
|
||||
if (!np)
|
||||
return NULL;
|
||||
|
||||
id = of_alias_get_id(np, ASC_SERIAL_NAME);
|
||||
|
||||
if (id < 0)
|
||||
id = 0;
|
||||
|
||||
if (WARN_ON(id >= ASC_MAX_PORTS))
|
||||
return NULL;
|
||||
|
||||
asc_ports[id].hw_flow_control = of_property_read_bool(np,
|
||||
"st,hw-flow-control");
|
||||
asc_ports[id].force_m1 = of_property_read_bool(np, "st,force_m1");
|
||||
asc_ports[id].port.line = id;
|
||||
return &asc_ports[id];
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct of_device_id asc_match[] = {
|
||||
{ .compatible = "st,asc", },
|
||||
{},
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE(of, asc_match);
|
||||
#endif
|
||||
|
||||
static int asc_serial_probe(struct platform_device *pdev)
|
||||
{
|
||||
int ret;
|
||||
struct asc_port *ascport;
|
||||
|
||||
ascport = asc_of_get_asc_port(pdev);
|
||||
if (!ascport)
|
||||
return -ENODEV;
|
||||
|
||||
ret = asc_init_port(ascport, pdev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = uart_add_one_port(&asc_uart_driver, &ascport->port);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
platform_set_drvdata(pdev, &ascport->port);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int asc_serial_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct uart_port *port = platform_get_drvdata(pdev);
|
||||
|
||||
return uart_remove_one_port(&asc_uart_driver, port);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int asc_serial_suspend(struct device *dev)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct uart_port *port = platform_get_drvdata(pdev);
|
||||
|
||||
return uart_suspend_port(&asc_uart_driver, port);
|
||||
}
|
||||
|
||||
static int asc_serial_resume(struct device *dev)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct uart_port *port = platform_get_drvdata(pdev);
|
||||
|
||||
return uart_resume_port(&asc_uart_driver, port);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
/*----------------------------------------------------------------------*/
|
||||
|
||||
#ifdef CONFIG_SERIAL_ST_ASC_CONSOLE
|
||||
static void asc_console_putchar(struct uart_port *port, int ch)
|
||||
{
|
||||
unsigned int timeout = 1000000;
|
||||
|
||||
/* Wait for upto 1 second in case flow control is stopping us. */
|
||||
while (--timeout && asc_txfifo_is_full(port))
|
||||
udelay(1);
|
||||
|
||||
asc_out(port, ASC_TXBUF, ch);
|
||||
}
|
||||
|
||||
/*
|
||||
* Print a string to the serial port trying not to disturb
|
||||
* any possible real use of the port...
|
||||
*/
|
||||
|
||||
static void asc_console_write(struct console *co, const char *s, unsigned count)
|
||||
{
|
||||
struct uart_port *port = &asc_ports[co->index].port;
|
||||
unsigned long flags;
|
||||
unsigned long timeout = 1000000;
|
||||
int locked = 1;
|
||||
u32 intenable;
|
||||
|
||||
local_irq_save(flags);
|
||||
if (port->sysrq)
|
||||
locked = 0; /* asc_interrupt has already claimed the lock */
|
||||
else if (oops_in_progress)
|
||||
locked = spin_trylock(&port->lock);
|
||||
else
|
||||
spin_lock(&port->lock);
|
||||
|
||||
/*
|
||||
* Disable interrupts so we don't get the IRQ line bouncing
|
||||
* up and down while interrupts are disabled.
|
||||
*/
|
||||
intenable = asc_in(port, ASC_INTEN);
|
||||
asc_out(port, ASC_INTEN, 0);
|
||||
(void)asc_in(port, ASC_INTEN); /* Defeat bus write posting */
|
||||
|
||||
uart_console_write(port, s, count, asc_console_putchar);
|
||||
|
||||
while (--timeout && !asc_txfifo_is_empty(port))
|
||||
udelay(1);
|
||||
|
||||
asc_out(port, ASC_INTEN, intenable);
|
||||
|
||||
if (locked)
|
||||
spin_unlock(&port->lock);
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
static int asc_console_setup(struct console *co, char *options)
|
||||
{
|
||||
struct asc_port *ascport;
|
||||
int baud = 9600;
|
||||
int bits = 8;
|
||||
int parity = 'n';
|
||||
int flow = 'n';
|
||||
|
||||
if (co->index >= ASC_MAX_PORTS)
|
||||
return -ENODEV;
|
||||
|
||||
ascport = &asc_ports[co->index];
|
||||
|
||||
/*
|
||||
* This driver does not support early console initialization
|
||||
* (use ARM early printk support instead), so we only expect
|
||||
* this to be called during the uart port registration when the
|
||||
* driver gets probed and the port should be mapped at that point.
|
||||
*/
|
||||
BUG_ON(ascport->port.mapbase == 0 || ascport->port.membase == NULL);
|
||||
|
||||
if (options)
|
||||
uart_parse_options(options, &baud, &parity, &bits, &flow);
|
||||
|
||||
return uart_set_options(&ascport->port, co, baud, parity, bits, flow);
|
||||
}
|
||||
|
||||
static struct console asc_console = {
|
||||
.name = ASC_SERIAL_NAME,
|
||||
.device = uart_console_device,
|
||||
.write = asc_console_write,
|
||||
.setup = asc_console_setup,
|
||||
.flags = CON_PRINTBUFFER,
|
||||
.index = -1,
|
||||
.data = &asc_uart_driver,
|
||||
};
|
||||
|
||||
#define ASC_SERIAL_CONSOLE (&asc_console)
|
||||
|
||||
#else
|
||||
#define ASC_SERIAL_CONSOLE NULL
|
||||
#endif /* CONFIG_SERIAL_ST_ASC_CONSOLE */
|
||||
|
||||
static struct uart_driver asc_uart_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.driver_name = DRIVER_NAME,
|
||||
.dev_name = ASC_SERIAL_NAME,
|
||||
.major = 0,
|
||||
.minor = 0,
|
||||
.nr = ASC_MAX_PORTS,
|
||||
.cons = ASC_SERIAL_CONSOLE,
|
||||
};
|
||||
|
||||
static const struct dev_pm_ops asc_serial_pm_ops = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(asc_serial_suspend, asc_serial_resume)
|
||||
};
|
||||
|
||||
static struct platform_driver asc_serial_driver = {
|
||||
.probe = asc_serial_probe,
|
||||
.remove = asc_serial_remove,
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.pm = &asc_serial_pm_ops,
|
||||
.owner = THIS_MODULE,
|
||||
.of_match_table = of_match_ptr(asc_match),
|
||||
},
|
||||
};
|
||||
|
||||
static int __init asc_init(void)
|
||||
{
|
||||
int ret;
|
||||
static char banner[] __initdata =
|
||||
KERN_INFO "STMicroelectronics ASC driver initialized\n";
|
||||
|
||||
printk(banner);
|
||||
|
||||
ret = uart_register_driver(&asc_uart_driver);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = platform_driver_register(&asc_serial_driver);
|
||||
if (ret)
|
||||
uart_unregister_driver(&asc_uart_driver);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit asc_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&asc_serial_driver);
|
||||
uart_unregister_driver(&asc_uart_driver);
|
||||
}
|
||||
|
||||
module_init(asc_init);
|
||||
module_exit(asc_exit);
|
||||
|
||||
MODULE_ALIAS("platform:" DRIVER_NAME);
|
||||
MODULE_AUTHOR("STMicroelectronics (R&D) Limited");
|
||||
MODULE_DESCRIPTION("STMicroelectronics ASC serial port driver");
|
||||
MODULE_LICENSE("GPL");
|
|
@ -162,7 +162,7 @@ static void timbuart_handle_tx_port(struct uart_port *port, u32 isr, u32 *ier)
|
|||
dev_dbg(port->dev, "%s - leaving\n", __func__);
|
||||
}
|
||||
|
||||
void timbuart_handle_rx_port(struct uart_port *port, u32 isr, u32 *ier)
|
||||
static void timbuart_handle_rx_port(struct uart_port *port, u32 isr, u32 *ier)
|
||||
{
|
||||
if (isr & RXFLAGS) {
|
||||
/* Some RX status is set */
|
||||
|
@ -184,7 +184,7 @@ void timbuart_handle_rx_port(struct uart_port *port, u32 isr, u32 *ier)
|
|||
dev_dbg(port->dev, "%s - leaving\n", __func__);
|
||||
}
|
||||
|
||||
void timbuart_tasklet(unsigned long arg)
|
||||
static void timbuart_tasklet(unsigned long arg)
|
||||
{
|
||||
struct timbuart_port *uart = (struct timbuart_port *)arg;
|
||||
u32 isr, ier = 0;
|
||||
|
|
|
@ -705,7 +705,7 @@ static int siu_init_ports(struct platform_device *pdev)
|
|||
{
|
||||
struct uart_port *port;
|
||||
struct resource *res;
|
||||
int *type = pdev->dev.platform_data;
|
||||
int *type = dev_get_platdata(&pdev->dev);
|
||||
int i;
|
||||
|
||||
if (!type)
|
||||
|
|
|
@ -170,7 +170,9 @@ static void handle_rx(struct uart_port *port)
|
|||
tty_insert_flip_char(tport, c, flag);
|
||||
}
|
||||
|
||||
spin_unlock(&port->lock);
|
||||
tty_flip_buffer_push(tport);
|
||||
spin_lock(&port->lock);
|
||||
}
|
||||
|
||||
static void handle_tx(struct uart_port *port)
|
||||
|
@ -630,7 +632,6 @@ static int vt8500_serial_remove(struct platform_device *pdev)
|
|||
{
|
||||
struct vt8500_port *vt8500_port = platform_get_drvdata(pdev);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
clk_disable_unprepare(vt8500_port->clk);
|
||||
uart_remove_one_port(&vt8500_uart_driver, &vt8500_port->uart);
|
||||
|
||||
|
|
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue