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GPIO changes for v3.6: 

- New driver for AMD-8111 southbridge GPIOs
 - New driver for Wolfson Micro Arizona devices
 - Propagate device tree parse errors
 - Probe deferral finalizations - all expected calls to
   GPIO will now hopefully request deferral where apropriate
 - Misc updates to TCA6424, WM8994, LPC32xx, PCF857x, Samsung
   MXC, OMAP and PCA953X drivers.
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Merge tag 'gpio-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO changes from Linus Walleij:
 - New driver for AMD-8111 southbridge GPIOs
 - New driver for Wolfson Micro Arizona devices
 - Propagate device tree parse errors
 - Probe deferral finalizations - all expected calls to GPIO will now
   hopefully request deferral where apropriate
 - Misc updates to TCA6424, WM8994, LPC32xx, PCF857x, Samsung MXC, OMAP
   and PCA953X drivers.

Fix up gpio_idx conflicts in drivers/gpio/gpio-mxc.c

* tag 'gpio-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet available
  gpiolib: Defer failed gpio requests by default
  MAINTAINERS: add entry OMAP GPIO driver
  gpio/pca953x: increase variables size to support 24 bit of data
  GPIO: PCA953X: Increase size of invert variable to support 24 bit
  gpio/omap: move bank->dbck initialization to omap_gpio_mod_init()
  gpio/mxc: use the edge_sel feature if available
  gpio: propagate of_parse_phandle_with_args errors
  gpio: samsung: add flags specifier to device-tree binding
  gpiolib: Add support for Wolfson Microelectronics Arizona class devices
  gpio: gpio-lpc32xx: Add gpio_to_irq mapping
  gpio: pcf857x: share 8/16 bit access functions
  gpio: LPC32xx: Driver cleanup
  MAINTAINERS: Add Wolfson gpiolib drivers to the Wolfson entry
  gpiolib: wm8994: Convert to devm_kzalloc()
  gpiolib: wm8994: Use irq_domain mappings for gpios
  gpio: add a driver for GPIO pins found on AMD-8111 south bridge chips
  gpio/tca6424: merge I2C transactions, remove cast
  gpio/of: fix a typo of comment message
This commit is contained in:
Linus Torvalds 2012-07-26 13:56:38 -07:00
parent 608adca523 4fbb0022cb
commit f948ad0787
23 changed files with 700 additions and 191 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt
View File

@ -22,7 +22,7 @@ Required properties:
Example:
gpio0: gpio@73f84000 {
compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
reg = <0x73f84000 0x4000>;
interrupts = <50 51>;
gpio-controller;

9
Documentation/devicetree/bindings/gpio/gpio-samsung.txt
View File

@ -11,14 +11,15 @@ Required properties:
<[phandle of the gpio controller node]
[pin number within the gpio controller]
[mux function]
[pull up/down]
[flags and pull up/down]
[drive strength]>
Values for gpio specifier:
- Pin number: is a value between 0 to 7.
- Pull Up/Down: 0 - Pull Up/Down Disabled.
1 - Pull Down Enabled.
3 - Pull Up Enabled.
- Flags and Pull Up/Down: 0 - Pull Up/Down Disabled.
1 - Pull Down Enabled.
3 - Pull Up Enabled.
Bit 16 (0x00010000) - Input is active low.
- Drive Strength: 0 - 1x,
1 - 3x,
2 - 2x,

8
MAINTAINERS
View File

@ -4961,6 +4961,13 @@ S: Maintained
F: drivers/usb/*/*omap*
F: arch/arm/*omap*/usb*
OMAP GPIO DRIVER
M: Santosh Shilimkar <santosh.shilimkar@ti.com>
M: Kevin Hilman <khilman@ti.com>
L: linux-omap@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-omap.c
OMFS FILESYSTEM
M: Bob Copeland <me@bobcopeland.com>
L: linux-karma-devel@lists.sourceforge.net
@ -7615,6 +7622,7 @@ F: Documentation/hwmon/wm83??
F: arch/arm/mach-s3c64xx/mach-crag6410*
F: drivers/clk/clk-wm83*.c
F: drivers/leds/leds-wm83*.c
F: drivers/gpio/gpio-*wm*.c
F: drivers/hwmon/wm83??-hwmon.c
F: drivers/input/misc/wm831x-on.c
F: drivers/input/touchscreen/wm831x-ts.c

8
arch/arm/boot/dts/imx51.dtsi
View File

@ -127,7 +127,7 @@
};
gpio1: gpio@73f84000 {
compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
reg = <0x73f84000 0x4000>;
interrupts = <50 51>;
gpio-controller;
@ -137,7 +137,7 @@
};
gpio2: gpio@73f88000 {
compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
reg = <0x73f88000 0x4000>;
interrupts = <52 53>;
gpio-controller;
@ -147,7 +147,7 @@
};
gpio3: gpio@73f8c000 {
compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
reg = <0x73f8c000 0x4000>;
interrupts = <54 55>;
gpio-controller;
@ -157,7 +157,7 @@
};
gpio4: gpio@73f90000 {
compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
reg = <0x73f90000 0x4000>;
interrupts = <56 57>;
gpio-controller;

14
arch/arm/boot/dts/imx53.dtsi
View File

@ -129,7 +129,7 @@
};
gpio1: gpio@53f84000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53f84000 0x4000>;
interrupts = <50 51>;
gpio-controller;
@ -139,7 +139,7 @@
};
gpio2: gpio@53f88000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53f88000 0x4000>;
interrupts = <52 53>;
gpio-controller;
@ -149,7 +149,7 @@
};
gpio3: gpio@53f8c000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53f8c000 0x4000>;
interrupts = <54 55>;
gpio-controller;
@ -159,7 +159,7 @@
};
gpio4: gpio@53f90000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53f90000 0x4000>;
interrupts = <56 57>;
gpio-controller;
@ -197,7 +197,7 @@
};
gpio5: gpio@53fdc000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53fdc000 0x4000>;
interrupts = <103 104>;
gpio-controller;
@ -207,7 +207,7 @@
};
gpio6: gpio@53fe0000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53fe0000 0x4000>;
interrupts = <105 106>;
gpio-controller;
@ -217,7 +217,7 @@
};
gpio7: gpio@53fe4000 {
compatible = "fsl,imx53-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx53-gpio", "fsl,imx35-gpio";
reg = <0x53fe4000 0x4000>;
interrupts = <107 108>;
gpio-controller;

14
arch/arm/boot/dts/imx6q.dtsi
View File

@ -277,7 +277,7 @@
};
gpio1: gpio@0209c000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x0209c000 0x4000>;
interrupts = <0 66 0x04 0 67 0x04>;
gpio-controller;
@ -287,7 +287,7 @@
};
gpio2: gpio@020a0000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x020a0000 0x4000>;
interrupts = <0 68 0x04 0 69 0x04>;
gpio-controller;
@ -297,7 +297,7 @@
};
gpio3: gpio@020a4000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x020a4000 0x4000>;
interrupts = <0 70 0x04 0 71 0x04>;
gpio-controller;
@ -307,7 +307,7 @@
};
gpio4: gpio@020a8000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x020a8000 0x4000>;
interrupts = <0 72 0x04 0 73 0x04>;
gpio-controller;
@ -317,7 +317,7 @@
};
gpio5: gpio@020ac000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x020ac000 0x4000>;
interrupts = <0 74 0x04 0 75 0x04>;
gpio-controller;
@ -327,7 +327,7 @@
};
gpio6: gpio@020b0000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x020b0000 0x4000>;
interrupts = <0 76 0x04 0 77 0x04>;
gpio-controller;
@ -337,7 +337,7 @@
};
gpio7: gpio@020b4000 {
compatible = "fsl,imx6q-gpio", "fsl,imx31-gpio";
compatible = "fsl,imx6q-gpio", "fsl,imx35-gpio";
reg = <0x020b4000 0x4000>;
interrupts = <0 78 0x04 0 79 0x04>;
gpio-controller;

10
arch/arm/mach-imx/mm-imx25.c
View File

@ -89,11 +89,11 @@ static const struct resource imx25_audmux_res[] __initconst = {
void __init imx25_soc_init(void)
{
/* i.mx25 has the i.mx31 type gpio */
mxc_register_gpio("imx31-gpio", 0, MX25_GPIO1_BASE_ADDR, SZ_16K, MX25_INT_GPIO1, 0);
mxc_register_gpio("imx31-gpio", 1, MX25_GPIO2_BASE_ADDR, SZ_16K, MX25_INT_GPIO2, 0);
mxc_register_gpio("imx31-gpio", 2, MX25_GPIO3_BASE_ADDR, SZ_16K, MX25_INT_GPIO3, 0);
mxc_register_gpio("imx31-gpio", 3, MX25_GPIO4_BASE_ADDR, SZ_16K, MX25_INT_GPIO4, 0);
/* i.mx25 has the i.mx35 type gpio */
mxc_register_gpio("imx35-gpio", 0, MX25_GPIO1_BASE_ADDR, SZ_16K, MX25_INT_GPIO1, 0);
mxc_register_gpio("imx35-gpio", 1, MX25_GPIO2_BASE_ADDR, SZ_16K, MX25_INT_GPIO2, 0);
mxc_register_gpio("imx35-gpio", 2, MX25_GPIO3_BASE_ADDR, SZ_16K, MX25_INT_GPIO3, 0);
mxc_register_gpio("imx35-gpio", 3, MX25_GPIO4_BASE_ADDR, SZ_16K, MX25_INT_GPIO4, 0);
pinctrl_provide_dummies();
/* i.mx25 has the i.mx35 type sdma */

7
arch/arm/mach-imx/mm-imx3.c
View File

@ -272,10 +272,9 @@ void __init imx35_soc_init(void)
imx3_init_l2x0();
/* i.mx35 has the i.mx31 type gpio */
mxc_register_gpio("imx31-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
mxc_register_gpio("imx31-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
mxc_register_gpio("imx31-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
mxc_register_gpio("imx35-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
mxc_register_gpio("imx35-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
mxc_register_gpio("imx35-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
pinctrl_provide_dummies();
if (to_version == 1) {

40
arch/arm/mach-imx/mm-imx5.c
View File

@ -161,13 +161,13 @@ static const struct resource imx53_audmux_res[] __initconst = {
void __init imx50_soc_init(void)
{
/* i.mx50 has the i.mx31 type gpio */
mxc_register_gpio("imx31-gpio", 0, MX50_GPIO1_BASE_ADDR, SZ_16K, MX50_INT_GPIO1_LOW, MX50_INT_GPIO1_HIGH);
mxc_register_gpio("imx31-gpio", 1, MX50_GPIO2_BASE_ADDR, SZ_16K, MX50_INT_GPIO2_LOW, MX50_INT_GPIO2_HIGH);
mxc_register_gpio("imx31-gpio", 2, MX50_GPIO3_BASE_ADDR, SZ_16K, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH);
mxc_register_gpio("imx31-gpio", 3, MX50_GPIO4_BASE_ADDR, SZ_16K, MX50_INT_GPIO4_LOW, MX50_INT_GPIO4_HIGH);
mxc_register_gpio("imx31-gpio", 4, MX50_GPIO5_BASE_ADDR, SZ_16K, MX50_INT_GPIO5_LOW, MX50_INT_GPIO5_HIGH);
mxc_register_gpio("imx31-gpio", 5, MX50_GPIO6_BASE_ADDR, SZ_16K, MX50_INT_GPIO6_LOW, MX50_INT_GPIO6_HIGH);
/* i.mx50 has the i.mx35 type gpio */
mxc_register_gpio("imx35-gpio", 0, MX50_GPIO1_BASE_ADDR, SZ_16K, MX50_INT_GPIO1_LOW, MX50_INT_GPIO1_HIGH);
mxc_register_gpio("imx35-gpio", 1, MX50_GPIO2_BASE_ADDR, SZ_16K, MX50_INT_GPIO2_LOW, MX50_INT_GPIO2_HIGH);
mxc_register_gpio("imx35-gpio", 2, MX50_GPIO3_BASE_ADDR, SZ_16K, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH);
mxc_register_gpio("imx35-gpio", 3, MX50_GPIO4_BASE_ADDR, SZ_16K, MX50_INT_GPIO4_LOW, MX50_INT_GPIO4_HIGH);
mxc_register_gpio("imx35-gpio", 4, MX50_GPIO5_BASE_ADDR, SZ_16K, MX50_INT_GPIO5_LOW, MX50_INT_GPIO5_HIGH);
mxc_register_gpio("imx35-gpio", 5, MX50_GPIO6_BASE_ADDR, SZ_16K, MX50_INT_GPIO6_LOW, MX50_INT_GPIO6_HIGH);
/* i.mx50 has the i.mx31 type audmux */
platform_device_register_simple("imx31-audmux", 0, imx50_audmux_res,
@ -176,11 +176,11 @@ void __init imx50_soc_init(void)
void __init imx51_soc_init(void)
{
/* i.mx51 has the i.mx31 type gpio */
mxc_register_gpio("imx31-gpio", 0, MX51_GPIO1_BASE_ADDR, SZ_16K, MX51_INT_GPIO1_LOW, MX51_INT_GPIO1_HIGH);
mxc_register_gpio("imx31-gpio", 1, MX51_GPIO2_BASE_ADDR, SZ_16K, MX51_INT_GPIO2_LOW, MX51_INT_GPIO2_HIGH);
mxc_register_gpio("imx31-gpio", 2, MX51_GPIO3_BASE_ADDR, SZ_16K, MX51_INT_GPIO3_LOW, MX51_INT_GPIO3_HIGH);
mxc_register_gpio("imx31-gpio", 3, MX51_GPIO4_BASE_ADDR, SZ_16K, MX51_INT_GPIO4_LOW, MX51_INT_GPIO4_HIGH);
/* i.mx51 has the i.mx35 type gpio */
mxc_register_gpio("imx35-gpio", 0, MX51_GPIO1_BASE_ADDR, SZ_16K, MX51_INT_GPIO1_LOW, MX51_INT_GPIO1_HIGH);
mxc_register_gpio("imx35-gpio", 1, MX51_GPIO2_BASE_ADDR, SZ_16K, MX51_INT_GPIO2_LOW, MX51_INT_GPIO2_HIGH);
mxc_register_gpio("imx35-gpio", 2, MX51_GPIO3_BASE_ADDR, SZ_16K, MX51_INT_GPIO3_LOW, MX51_INT_GPIO3_HIGH);
mxc_register_gpio("imx35-gpio", 3, MX51_GPIO4_BASE_ADDR, SZ_16K, MX51_INT_GPIO4_LOW, MX51_INT_GPIO4_HIGH);
pinctrl_provide_dummies();
@ -198,14 +198,14 @@ void __init imx51_soc_init(void)
void __init imx53_soc_init(void)
{
/* i.mx53 has the i.mx31 type gpio */
mxc_register_gpio("imx31-gpio", 0, MX53_GPIO1_BASE_ADDR, SZ_16K, MX53_INT_GPIO1_LOW, MX53_INT_GPIO1_HIGH);
mxc_register_gpio("imx31-gpio", 1, MX53_GPIO2_BASE_ADDR, SZ_16K, MX53_INT_GPIO2_LOW, MX53_INT_GPIO2_HIGH);
mxc_register_gpio("imx31-gpio", 2, MX53_GPIO3_BASE_ADDR, SZ_16K, MX53_INT_GPIO3_LOW, MX53_INT_GPIO3_HIGH);
mxc_register_gpio("imx31-gpio", 3, MX53_GPIO4_BASE_ADDR, SZ_16K, MX53_INT_GPIO4_LOW, MX53_INT_GPIO4_HIGH);
mxc_register_gpio("imx31-gpio", 4, MX53_GPIO5_BASE_ADDR, SZ_16K, MX53_INT_GPIO5_LOW, MX53_INT_GPIO5_HIGH);
mxc_register_gpio("imx31-gpio", 5, MX53_GPIO6_BASE_ADDR, SZ_16K, MX53_INT_GPIO6_LOW, MX53_INT_GPIO6_HIGH);
mxc_register_gpio("imx31-gpio", 6, MX53_GPIO7_BASE_ADDR, SZ_16K, MX53_INT_GPIO7_LOW, MX53_INT_GPIO7_HIGH);
/* i.mx53 has the i.mx35 type gpio */
mxc_register_gpio("imx35-gpio", 0, MX53_GPIO1_BASE_ADDR, SZ_16K, MX53_INT_GPIO1_LOW, MX53_INT_GPIO1_HIGH);
mxc_register_gpio("imx35-gpio", 1, MX53_GPIO2_BASE_ADDR, SZ_16K, MX53_INT_GPIO2_LOW, MX53_INT_GPIO2_HIGH);
mxc_register_gpio("imx35-gpio", 2, MX53_GPIO3_BASE_ADDR, SZ_16K, MX53_INT_GPIO3_LOW, MX53_INT_GPIO3_HIGH);
mxc_register_gpio("imx35-gpio", 3, MX53_GPIO4_BASE_ADDR, SZ_16K, MX53_INT_GPIO4_LOW, MX53_INT_GPIO4_HIGH);
mxc_register_gpio("imx35-gpio", 4, MX53_GPIO5_BASE_ADDR, SZ_16K, MX53_INT_GPIO5_LOW, MX53_INT_GPIO5_HIGH);
mxc_register_gpio("imx35-gpio", 5, MX53_GPIO6_BASE_ADDR, SZ_16K, MX53_INT_GPIO6_LOW, MX53_INT_GPIO6_HIGH);
mxc_register_gpio("imx35-gpio", 6, MX53_GPIO7_BASE_ADDR, SZ_16K, MX53_INT_GPIO7_LOW, MX53_INT_GPIO7_HIGH);
pinctrl_provide_dummies();
/* i.mx53 has the i.mx35 type sdma */

18
drivers/gpio/Kconfig
View File

@ -253,6 +253,12 @@ config GPIO_GE_FPGA
comment "I2C GPIO expanders:"
config GPIO_ARIZONA
tristate "Wolfson Microelectronics Arizona class devices"
depends on MFD_ARIZONA
help
Support for GPIOs on Wolfson Arizona class devices.
config GPIO_MAX7300
tristate "Maxim MAX7300 GPIO expander"
depends on I2C
@ -466,6 +472,18 @@ config GPIO_BT8XX
If unsure, say N.
config GPIO_AMD8111
tristate "AMD 8111 GPIO driver"
depends on PCI
help
The AMD 8111 south bridge contains 32 GPIO pins which can be used.
Note, that usually system firmware/ACPI handles GPIO pins on their
own and users might easily break their systems with uncarefull usage
of this driver!
If unsure, say N
config GPIO_LANGWELL
bool "Intel Langwell/Penwell GPIO support"
depends on PCI && X86

2
drivers/gpio/Makefile
View File

@ -12,6 +12,8 @@ obj-$(CONFIG_GPIO_74X164) += gpio-74x164.o
obj-$(CONFIG_GPIO_AB8500) += gpio-ab8500.o
obj-$(CONFIG_GPIO_ADP5520) += gpio-adp5520.o
obj-$(CONFIG_GPIO_ADP5588) += gpio-adp5588.o
obj-$(CONFIG_GPIO_AMD8111) += gpio-amd8111.o
obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o
obj-$(CONFIG_GPIO_BT8XX) += gpio-bt8xx.o
obj-$(CONFIG_GPIO_CS5535) += gpio-cs5535.o
obj-$(CONFIG_GPIO_DA9052) += gpio-da9052.o

246
drivers/gpio/gpio-amd8111.c Normal file
View File

@ -0,0 +1,246 @@
/*
* GPIO driver for AMD 8111 south bridges
*
* Copyright (c) 2012 Dmitry Eremin-Solenikov
*
* Based on the AMD RNG driver:
* Copyright 2005 (c) MontaVista Software, Inc.
* with the majority of the code coming from:
*
* Hardware driver for the Intel/AMD/VIA Random Number Generators (RNG)
* (c) Copyright 2003 Red Hat Inc <jgarzik@redhat.com>
*
* derived from
*
* Hardware driver for the AMD 768 Random Number Generator (RNG)
* (c) Copyright 2001 Red Hat Inc
*
* derived from
*
* Hardware driver for Intel i810 Random Number Generator (RNG)
* Copyright 2000,2001 Jeff Garzik <jgarzik@pobox.com>
* Copyright 2000,2001 Philipp Rumpf <prumpf@mandrakesoft.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#define PMBASE_OFFSET 0xb0
#define PMBASE_SIZE 0x30
#define AMD_REG_GPIO(i) (0x10 + (i))
#define AMD_GPIO_LTCH_STS 0x40 /* Latch status, w1 */
#define AMD_GPIO_RTIN 0x20 /* Real Time in, ro */
#define AMD_GPIO_DEBOUNCE 0x10 /* Debounce, rw */
#define AMD_GPIO_MODE_MASK 0x0c /* Pin Mode Select, rw */
#define AMD_GPIO_MODE_IN 0x00
#define AMD_GPIO_MODE_OUT 0x04
/* Enable alternative (e.g. clkout, IRQ, etc) function of the pin */
#define AMD_GPIO_MODE_ALTFN 0x08 /* Or 0x09 */
#define AMD_GPIO_X_MASK 0x03 /* In/Out specific, rw */
#define AMD_GPIO_X_IN_ACTIVEHI 0x01 /* Active High */
#define AMD_GPIO_X_IN_LATCH 0x02 /* Latched version is selected */
#define AMD_GPIO_X_OUT_LOW 0x00
#define AMD_GPIO_X_OUT_HI 0x01
#define AMD_GPIO_X_OUT_CLK0 0x02
#define AMD_GPIO_X_OUT_CLK1 0x03
/*
* Data for PCI driver interface
*
* This data only exists for exporting the supported
* PCI ids via MODULE_DEVICE_TABLE. We do not actually
* register a pci_driver, because someone else might one day
* want to register another driver on the same PCI id.
*/
static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS), 0 },
{ 0, }, /* terminate list */
};
MODULE_DEVICE_TABLE(pci, pci_tbl);
struct amd_gpio {
struct gpio_chip chip;
u32 pmbase;
void __iomem *pm;
struct pci_dev *pdev;
spinlock_t lock; /* guards hw registers and orig table */
u8 orig[32];
};
#define to_agp(chip) container_of(chip, struct amd_gpio, chip)
static int amd_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct amd_gpio *agp = to_agp(chip);
agp->orig[offset] = ioread8(agp->pm + AMD_REG_GPIO(offset)) &
(AMD_GPIO_DEBOUNCE | AMD_GPIO_MODE_MASK | AMD_GPIO_X_MASK);
dev_dbg(&agp->pdev->dev, "Requested gpio %d, data %x\n", offset, agp->orig[offset]);
return 0;
}
static void amd_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct amd_gpio *agp = to_agp(chip);
dev_dbg(&agp->pdev->dev, "Freed gpio %d, data %x\n", offset, agp->orig[offset]);
iowrite8(agp->orig[offset], agp->pm + AMD_REG_GPIO(offset));
}
static void amd_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct amd_gpio *agp = to_agp(chip);
u8 temp;
unsigned long flags;
spin_lock_irqsave(&agp->lock, flags);
temp = ioread8(agp->pm + AMD_REG_GPIO(offset));
temp = (temp & AMD_GPIO_DEBOUNCE) | AMD_GPIO_MODE_OUT | (value ? AMD_GPIO_X_OUT_HI : AMD_GPIO_X_OUT_LOW);
iowrite8(temp, agp->pm + AMD_REG_GPIO(offset));
spin_unlock_irqrestore(&agp->lock, flags);
dev_dbg(&agp->pdev->dev, "Setting gpio %d, value %d, reg=%02x\n", offset, !!value, temp);
}
static int amd_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct amd_gpio *agp = to_agp(chip);
u8 temp;
temp = ioread8(agp->pm + AMD_REG_GPIO(offset));
dev_dbg(&agp->pdev->dev, "Getting gpio %d, reg=%02x\n", offset, temp);
return (temp & AMD_GPIO_RTIN) ? 1 : 0;
}
static int amd_gpio_dirout(struct gpio_chip *chip, unsigned offset, int value)
{
struct amd_gpio *agp = to_agp(chip);
u8 temp;
unsigned long flags;
spin_lock_irqsave(&agp->lock, flags);
temp = ioread8(agp->pm + AMD_REG_GPIO(offset));
temp = (temp & AMD_GPIO_DEBOUNCE) | AMD_GPIO_MODE_OUT | (value ? AMD_GPIO_X_OUT_HI : AMD_GPIO_X_OUT_LOW);
iowrite8(temp, agp->pm + AMD_REG_GPIO(offset));
spin_unlock_irqrestore(&agp->lock, flags);
dev_dbg(&agp->pdev->dev, "Dirout gpio %d, value %d, reg=%02x\n", offset, !!value, temp);
return 0;
}
static int amd_gpio_dirin(struct gpio_chip *chip, unsigned offset)
{
struct amd_gpio *agp = to_agp(chip);
u8 temp;
unsigned long flags;
spin_lock_irqsave(&agp->lock, flags);
temp = ioread8(agp->pm + AMD_REG_GPIO(offset));
temp = (temp & AMD_GPIO_DEBOUNCE) | AMD_GPIO_MODE_IN;
iowrite8(temp, agp->pm + AMD_REG_GPIO(offset));
spin_unlock_irqrestore(&agp->lock, flags);
dev_dbg(&agp->pdev->dev, "Dirin gpio %d, reg=%02x\n", offset, temp);
return 0;
}
static struct amd_gpio gp = {
.chip = {
.label = "AMD GPIO",
.owner = THIS_MODULE,
.base = -1,
.ngpio = 32,
.request = amd_gpio_request,
.free = amd_gpio_free,
.set = amd_gpio_set,
.get = amd_gpio_get,
.direction_output = amd_gpio_dirout,
.direction_input = amd_gpio_dirin,
},
};
static int __init amd_gpio_init(void)
{
int err = -ENODEV;
struct pci_dev *pdev = NULL;
const struct pci_device_id *ent;
/* We look for our device - AMD South Bridge
* I don't know about a system with two such bridges,
* so we can assume that there is max. one device.
*
* We can't use plain pci_driver mechanism,
* as the device is really a multiple function device,
* main driver that binds to the pci_device is an smbus
* driver and have to find & bind to the device this way.
*/
for_each_pci_dev(pdev) {
ent = pci_match_id(pci_tbl, pdev);
if (ent)
goto found;
}
/* Device not found. */
goto out;
found:
err = pci_read_config_dword(pdev, 0x58, &gp.pmbase);
if (err)
goto out;
err = -EIO;
gp.pmbase &= 0x0000FF00;
if (gp.pmbase == 0)
goto out;
if (!request_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE, "AMD GPIO")) {
dev_err(&pdev->dev, "AMD GPIO region 0x%x already in use!\n",
gp.pmbase + PMBASE_OFFSET);
err = -EBUSY;
goto out;
}
gp.pm = ioport_map(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE);
gp.pdev = pdev;
gp.chip.dev = &pdev->dev;
spin_lock_init(&gp.lock);
printk(KERN_INFO "AMD-8111 GPIO detected\n");
err = gpiochip_add(&gp.chip);
if (err) {
printk(KERN_ERR "GPIO registering failed (%d)\n",
err);
release_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE);
goto out;
}
out:
return err;
}
static void __exit amd_gpio_exit(void)
{
int err = gpiochip_remove(&gp.chip);
WARN_ON(err);
ioport_unmap(gp.pm);
release_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE);
}
module_init(amd_gpio_init);
module_exit(amd_gpio_exit);
MODULE_AUTHOR("The Linux Kernel team");
MODULE_DESCRIPTION("GPIO driver for AMD chipsets");
MODULE_LICENSE("GPL");

163
drivers/gpio/gpio-arizona.c Normal file
View File

@ -0,0 +1,163 @@
/*
* gpiolib support for Wolfson Arizona class devices
*
* Copyright 2012 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
struct arizona_gpio {
struct arizona *arizona;
struct gpio_chip gpio_chip;
};
static inline struct arizona_gpio *to_arizona_gpio(struct gpio_chip *chip)
{
return container_of(chip, struct arizona_gpio, gpio_chip);
}
static int arizona_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
{
struct arizona_gpio *arizona_gpio = to_arizona_gpio(chip);
struct arizona *arizona = arizona_gpio->arizona;
return regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset,
ARIZONA_GPN_DIR, ARIZONA_GPN_DIR);
}
static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct arizona_gpio *arizona_gpio = to_arizona_gpio(chip);
struct arizona *arizona = arizona_gpio->arizona;
unsigned int val;
int ret;
ret = regmap_read(arizona->regmap, ARIZONA_GPIO1_CTRL + offset, &val);
if (ret < 0)
return ret;
if (val & ARIZONA_GPN_LVL)
return 1;
else
return 0;
}
static int arizona_gpio_direction_out(struct gpio_chip *chip,
unsigned offset, int value)
{
struct arizona_gpio *arizona_gpio = to_arizona_gpio(chip);
struct arizona *arizona = arizona_gpio->arizona;
if (value)
value = ARIZONA_GPN_LVL;
return regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset,
ARIZONA_GPN_DIR | ARIZONA_GPN_LVL, value);
}
static void arizona_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct arizona_gpio *arizona_gpio = to_arizona_gpio(chip);
struct arizona *arizona = arizona_gpio->arizona;
if (value)
value = ARIZONA_GPN_LVL;
regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset,
ARIZONA_GPN_LVL, value);
}
static struct gpio_chip template_chip = {
.label = "arizona",
.owner = THIS_MODULE,
.direction_input = arizona_gpio_direction_in,
.get = arizona_gpio_get,
.direction_output = arizona_gpio_direction_out,
.set = arizona_gpio_set,
.can_sleep = 1,
};
static int __devinit arizona_gpio_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
struct arizona_pdata *pdata = arizona->dev->platform_data;
struct arizona_gpio *arizona_gpio;
int ret;
arizona_gpio = devm_kzalloc(&pdev->dev, sizeof(*arizona_gpio),
GFP_KERNEL);
if (arizona_gpio == NULL)
return -ENOMEM;
arizona_gpio->arizona = arizona;
arizona_gpio->gpio_chip = template_chip;
arizona_gpio->gpio_chip.dev = &pdev->dev;
switch (arizona->type) {
case WM5102:
case WM5110:
arizona_gpio->gpio_chip.ngpio = 5;
break;
default:
dev_err(&pdev->dev, "Unknown chip variant %d\n",
arizona->type);
return -EINVAL;
}
if (pdata && pdata->gpio_base)
arizona_gpio->gpio_chip.base = pdata->gpio_base;
else
arizona_gpio->gpio_chip.base = -1;
ret = gpiochip_add(&arizona_gpio->gpio_chip);
if (ret < 0) {
dev_err(&pdev->dev, "Could not register gpiochip, %d\n",
ret);
goto err;
}
platform_set_drvdata(pdev, arizona_gpio);
return ret;
err:
return ret;
}
static int __devexit arizona_gpio_remove(struct platform_device *pdev)
{
struct arizona_gpio *arizona_gpio = platform_get_drvdata(pdev);
return gpiochip_remove(&arizona_gpio->gpio_chip);
}
static struct platform_driver arizona_gpio_driver = {
.driver.name = "arizona-gpio",
.driver.owner = THIS_MODULE,
.probe = arizona_gpio_probe,
.remove = __devexit_p(arizona_gpio_remove),
};
module_platform_driver(arizona_gpio_driver);
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("GPIO interface for Arizona devices");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:arizona-gpio");

74
drivers/gpio/gpio-lpc32xx.c
View File

@ -1,5 +1,5 @@
/*
* arch/arm/mach-lpc32xx/gpiolib.c
* GPIO driver for LPC32xx SoC
*
* Author: Kevin Wells <kevin.wells@nxp.com>
*
@ -28,6 +28,7 @@
#include <mach/hardware.h>
#include <mach/platform.h>
#include <mach/gpio-lpc32xx.h>
#include <mach/irqs.h>
#define LPC32XX_GPIO_P3_INP_STATE _GPREG(0x000)
#define LPC32XX_GPIO_P3_OUTP_SET _GPREG(0x004)
@ -367,6 +368,66 @@ static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin)
return -EINVAL;
}
static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset)
{
return IRQ_LPC32XX_P0_P1_IRQ;
}
static const char lpc32xx_gpio_to_irq_gpio_p3_table[] = {
IRQ_LPC32XX_GPIO_00,
IRQ_LPC32XX_GPIO_01,
IRQ_LPC32XX_GPIO_02,
IRQ_LPC32XX_GPIO_03,
IRQ_LPC32XX_GPIO_04,
IRQ_LPC32XX_GPIO_05,
};
static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset)
{
if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpio_p3_table))
return lpc32xx_gpio_to_irq_gpio_p3_table[offset];
return -ENXIO;
}
static const char lpc32xx_gpio_to_irq_gpi_p3_table[] = {
IRQ_LPC32XX_GPI_00,
IRQ_LPC32XX_GPI_01,
IRQ_LPC32XX_GPI_02,
IRQ_LPC32XX_GPI_03,
IRQ_LPC32XX_GPI_04,
IRQ_LPC32XX_GPI_05,
IRQ_LPC32XX_GPI_06,
IRQ_LPC32XX_GPI_07,
IRQ_LPC32XX_GPI_08,
IRQ_LPC32XX_GPI_09,
-ENXIO, /* 10 */
-ENXIO, /* 11 */
-ENXIO, /* 12 */
-ENXIO, /* 13 */
-ENXIO, /* 14 */
-ENXIO, /* 15 */
-ENXIO, /* 16 */
-ENXIO, /* 17 */
-ENXIO, /* 18 */
IRQ_LPC32XX_GPI_19,
-ENXIO, /* 20 */
-ENXIO, /* 21 */
-ENXIO, /* 22 */
-ENXIO, /* 23 */
-ENXIO, /* 24 */
-ENXIO, /* 25 */
-ENXIO, /* 26 */
-ENXIO, /* 27 */
IRQ_LPC32XX_GPI_28,
};
static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset)
{
if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpi_p3_table))
return lpc32xx_gpio_to_irq_gpi_p3_table[offset];
return -ENXIO;
}
static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
{
.chip = {
@ -376,6 +437,7 @@ static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
.direction_output = lpc32xx_gpio_dir_output_p012,
.set = lpc32xx_gpio_set_value_p012,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_p01,
.base = LPC32XX_GPIO_P0_GRP,
.ngpio = LPC32XX_GPIO_P0_MAX,
.names = gpio_p0_names,
@ -391,6 +453,7 @@ static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
.direction_output = lpc32xx_gpio_dir_output_p012,
.set = lpc32xx_gpio_set_value_p012,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_p01,
.base = LPC32XX_GPIO_P1_GRP,
.ngpio = LPC32XX_GPIO_P1_MAX,
.names = gpio_p1_names,
@ -421,6 +484,7 @@ static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
.direction_output = lpc32xx_gpio_dir_output_p3,
.set = lpc32xx_gpio_set_value_p3,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_gpio_p3,
.base = LPC32XX_GPIO_P3_GRP,
.ngpio = LPC32XX_GPIO_P3_MAX,
.names = gpio_p3_names,
@ -434,6 +498,7 @@ static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
.direction_input = lpc32xx_gpio_dir_in_always,
.get = lpc32xx_gpi_get_value,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_gpi_p3,
.base = LPC32XX_GPI_P3_GRP,
.ngpio = LPC32XX_GPI_P3_MAX,
.names = gpi_p3_names,
@ -457,13 +522,6 @@ static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
},
};
/* Empty now, can be removed later when mach-lpc32xx is finally switched over
* to DT support
*/
void __init lpc32xx_gpio_init(void)
{
}
static int lpc32xx_of_xlate(struct gpio_chip *gc,
const struct of_phandle_args *gpiospec, u32 *flags)
{

71
drivers/gpio/gpio-mxc.c
View File

@ -37,7 +37,8 @@
enum mxc_gpio_hwtype {
IMX1_GPIO, /* runs on i.mx1 */
IMX21_GPIO, /* runs on i.mx21 and i.mx27 */
IMX31_GPIO, /* runs on all other i.mx */
IMX31_GPIO, /* runs on i.mx31 */
IMX35_GPIO, /* runs on all other i.mx */
};
/* device type dependent stuff */
@ -49,6 +50,7 @@ struct mxc_gpio_hwdata {
unsigned icr2_reg;
unsigned imr_reg;
unsigned isr_reg;
int edge_sel_reg;
unsigned low_level;
unsigned high_level;
unsigned rise_edge;
@ -73,6 +75,7 @@ static struct mxc_gpio_hwdata imx1_imx21_gpio_hwdata = {
.icr2_reg = 0x2c,
.imr_reg = 0x30,
.isr_reg = 0x34,
.edge_sel_reg = -EINVAL,
.low_level = 0x03,
.high_level = 0x02,
.rise_edge = 0x00,
@ -87,6 +90,22 @@ static struct mxc_gpio_hwdata imx31_gpio_hwdata = {
.icr2_reg = 0x10,
.imr_reg = 0x14,
.isr_reg = 0x18,
.edge_sel_reg = -EINVAL,
.low_level = 0x00,
.high_level = 0x01,
.rise_edge = 0x02,
.fall_edge = 0x03,
};
static struct mxc_gpio_hwdata imx35_gpio_hwdata = {
.dr_reg = 0x00,
.gdir_reg = 0x04,
.psr_reg = 0x08,
.icr1_reg = 0x0c,
.icr2_reg = 0x10,
.imr_reg = 0x14,
.isr_reg = 0x18,
.edge_sel_reg = 0x1c,
.low_level = 0x00,
.high_level = 0x01,
.rise_edge = 0x02,
@ -103,12 +122,13 @@ static struct mxc_gpio_hwdata *mxc_gpio_hwdata;
#define GPIO_ICR2 (mxc_gpio_hwdata->icr2_reg)
#define GPIO_IMR (mxc_gpio_hwdata->imr_reg)
#define GPIO_ISR (mxc_gpio_hwdata->isr_reg)
#define GPIO_EDGE_SEL (mxc_gpio_hwdata->edge_sel_reg)
#define GPIO_INT_LOW_LEV (mxc_gpio_hwdata->low_level)
#define GPIO_INT_HIGH_LEV (mxc_gpio_hwdata->high_level)
#define GPIO_INT_RISE_EDGE (mxc_gpio_hwdata->rise_edge)
#define GPIO_INT_FALL_EDGE (mxc_gpio_hwdata->fall_edge)
#define GPIO_INT_NONE 0x4
#define GPIO_INT_BOTH_EDGES 0x4
static struct platform_device_id mxc_gpio_devtype[] = {
{
@ -120,6 +140,9 @@ static struct platform_device_id mxc_gpio_devtype[] = {
}, {
.name = "imx31-gpio",
.driver_data = IMX31_GPIO,
}, {
.name = "imx35-gpio",
.driver_data = IMX35_GPIO,
}, {
/* sentinel */
}
@ -129,6 +152,7 @@ static const struct of_device_id mxc_gpio_dt_ids[] = {
{ .compatible = "fsl,imx1-gpio", .data = &mxc_gpio_devtype[IMX1_GPIO], },
{ .compatible = "fsl,imx21-gpio", .data = &mxc_gpio_devtype[IMX21_GPIO], },
{ .compatible = "fsl,imx31-gpio", .data = &mxc_gpio_devtype[IMX31_GPIO], },
{ .compatible = "fsl,imx35-gpio", .data = &mxc_gpio_devtype[IMX35_GPIO], },
{ /* sentinel */ }
};
@ -160,15 +184,19 @@ static int gpio_set_irq_type(struct irq_data *d, u32 type)
edge = GPIO_INT_FALL_EDGE;
break;
case IRQ_TYPE_EDGE_BOTH:
val = gpio_get_value(gpio);
if (val) {
edge = GPIO_INT_LOW_LEV;
pr_debug("mxc: set GPIO %d to low trigger\n", gpio);
if (GPIO_EDGE_SEL >= 0) {
edge = GPIO_INT_BOTH_EDGES;
} else {
edge = GPIO_INT_HIGH_LEV;
pr_debug("mxc: set GPIO %d to high trigger\n", gpio);
val = gpio_get_value(gpio);
if (val) {
edge = GPIO_INT_LOW_LEV;
pr_debug("mxc: set GPIO %d to low trigger\n", gpio);
} else {
edge = GPIO_INT_HIGH_LEV;
pr_debug("mxc: set GPIO %d to high trigger\n", gpio);
}
port->both_edges |= 1 << gpio_idx;
}
port->both_edges |= 1 << gpio_idx;
break;
case IRQ_TYPE_LEVEL_LOW:
edge = GPIO_INT_LOW_LEV;
@ -180,10 +208,23 @@ static int gpio_set_irq_type(struct irq_data *d, u32 type)
return -EINVAL;
}
reg += GPIO_ICR1 + ((gpio_idx & 0x10) >> 2); /* ICR1 or ICR2 */
bit = gpio_idx & 0xf;
val = readl(reg) & ~(0x3 << (bit << 1));
writel(val | (edge << (bit << 1)), reg);
if (GPIO_EDGE_SEL >= 0) {
val = readl(port->base + GPIO_EDGE_SEL);
if (edge == GPIO_INT_BOTH_EDGES)
writel(val | (1 << gpio_idx),
port->base + GPIO_EDGE_SEL);
else
writel(val & ~(1 << gpio_idx),
port->base + GPIO_EDGE_SEL);
}
if (edge != GPIO_INT_BOTH_EDGES) {
reg += GPIO_ICR1 + ((gpio_idx & 0x10) >> 2); /* lower or upper register */
bit = gpio_idx & 0xf;
val = readl(reg) & ~(0x3 << (bit << 1));
writel(val | (edge << (bit << 1)), reg);
}
writel(1 << gpio_idx, port->base + GPIO_ISR);
return 0;
@ -335,7 +376,9 @@ static void __devinit mxc_gpio_get_hw(struct platform_device *pdev)
return;
}
if (hwtype == IMX31_GPIO)
if (hwtype == IMX35_GPIO)
mxc_gpio_hwdata = &imx35_gpio_hwdata;
else if (hwtype == IMX31_GPIO)
mxc_gpio_hwdata = &imx31_gpio_hwdata;
else
mxc_gpio_hwdata = &imx1_imx21_gpio_hwdata;

10
drivers/gpio/gpio-omap.c
View File

@ -899,12 +899,6 @@ static int gpio_debounce(struct gpio_chip *chip, unsigned offset,
bank = container_of(chip, struct gpio_bank, chip);
if (!bank->dbck) {
bank->dbck = clk_get(bank->dev, "dbclk");
if (IS_ERR(bank->dbck))
dev_err(bank->dev, "Could not get gpio dbck\n");
}
spin_lock_irqsave(&bank->lock, flags);
_set_gpio_debounce(bank, offset, debounce);
spin_unlock_irqrestore(&bank->lock, flags);
@ -976,6 +970,10 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
/* Initialize interface clk ungated, module enabled */
if (bank->regs->ctrl)
__raw_writel(0, base + bank->regs->ctrl);
bank->dbck = clk_get(bank->dev, "dbclk");
if (IS_ERR(bank->dbck))
dev_err(bank->dev, "Could not get gpio dbck\n");
}
static __devinit void

67
drivers/gpio/gpio-pca953x.c
View File

@ -78,10 +78,10 @@ struct pca953x_chip {
#ifdef CONFIG_GPIO_PCA953X_IRQ
struct mutex irq_lock;
uint16_t irq_mask;
uint16_t irq_stat;
uint16_t irq_trig_raise;
uint16_t irq_trig_fall;
u32 irq_mask;
u32 irq_stat;
u32 irq_trig_raise;
u32 irq_trig_fall;
int irq_base;
#endif
@ -98,12 +98,11 @@ static int pca953x_write_reg(struct pca953x_chip *chip, int reg, u32 val)
if (chip->gpio_chip.ngpio <= 8)
ret = i2c_smbus_write_byte_data(chip->client, reg, val);
else if (chip->gpio_chip.ngpio == 24) {
ret = i2c_smbus_write_word_data(chip->client,
cpu_to_le32s(&val);
ret = i2c_smbus_write_i2c_block_data(chip->client,
(reg << 2) | REG_ADDR_AI,
val & 0xffff);
ret = i2c_smbus_write_byte_data(chip->client,
(reg << 2) + 2,
(val & 0xff0000) >> 16);
3,
(u8 *) &val);
}
else {
switch (chip->chip_type) {
@ -135,22 +134,27 @@ static int pca953x_read_reg(struct pca953x_chip *chip, int reg, u32 *val)
{
int ret;
if (chip->gpio_chip.ngpio <= 8)
if (chip->gpio_chip.ngpio <= 8) {
ret = i2c_smbus_read_byte_data(chip->client, reg);
else if (chip->gpio_chip.ngpio == 24) {
ret = i2c_smbus_read_word_data(chip->client, reg << 2);
ret |= (i2c_smbus_read_byte_data(chip->client,
(reg << 2) + 2)<<16);
*val = ret;
}
else
else if (chip->gpio_chip.ngpio == 24) {
*val = 0;
ret = i2c_smbus_read_i2c_block_data(chip->client,
(reg << 2) | REG_ADDR_AI,
3,
(u8 *) val);
le32_to_cpus(val);
} else {
ret = i2c_smbus_read_word_data(chip->client, reg << 1);
*val = ret;
}
if (ret < 0) {
dev_err(&chip->client->dev, "failed reading register\n");
return ret;
}
*val = (u32)ret;
return 0;
}
@ -349,8 +353,8 @@ static void pca953x_irq_bus_lock(struct irq_data *d)
static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
{
struct pca953x_chip *chip = irq_data_get_irq_chip_data(d);
uint16_t new_irqs;
uint16_t level;
u32 new_irqs;
u32 level;
/* Look for any newly setup interrupt */
new_irqs = chip->irq_trig_fall | chip->irq_trig_raise;
@ -368,8 +372,8 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
static int pca953x_irq_set_type(struct irq_data *d, unsigned int type)
{
struct pca953x_chip *chip = irq_data_get_irq_chip_data(d);
uint16_t level = d->irq - chip->irq_base;
uint16_t mask = 1 << level;
u32 level = d->irq - chip->irq_base;
u32 mask = 1 << level;
if (!(type & IRQ_TYPE_EDGE_BOTH)) {
dev_err(&chip->client->dev, "irq %d: unsupported type %d\n",
@ -399,12 +403,12 @@ static struct irq_chip pca953x_irq_chip = {
.irq_set_type = pca953x_irq_set_type,
};
static uint16_t pca953x_irq_pending(struct pca953x_chip *chip)
static u32 pca953x_irq_pending(struct pca953x_chip *chip)
{
u32 cur_stat;
uint16_t old_stat;
uint16_t pending;
uint16_t trigger;
u32 old_stat;
u32 pending;
u32 trigger;
int ret, offset = 0;
switch (chip->chip_type) {
@ -440,8 +444,8 @@ static uint16_t pca953x_irq_pending(struct pca953x_chip *chip)
static irqreturn_t pca953x_irq_handler(int irq, void *devid)
{
struct pca953x_chip *chip = devid;
uint16_t pending;
uint16_t level;
u32 pending;
u32 level;
pending = pca953x_irq_pending(chip);
@ -564,7 +568,7 @@ static void pca953x_irq_teardown(struct pca953x_chip *chip)
* WARNING: This is DEPRECATED and will be removed eventually!
*/
static void
pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert)
{
struct device_node *node;
const __be32 *val;
@ -592,13 +596,13 @@ pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
}
#else
static void
pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert)
{
*gpio_base = -1;
}
#endif
static int __devinit device_pca953x_init(struct pca953x_chip *chip, int invert)
static int __devinit device_pca953x_init(struct pca953x_chip *chip, u32 invert)
{
int ret;
@ -617,7 +621,7 @@ out:
return ret;
}
static int __devinit device_pca957x_init(struct pca953x_chip *chip, int invert)
static int __devinit device_pca957x_init(struct pca953x_chip *chip, u32 invert)
{
int ret;
u32 val = 0;
@ -653,8 +657,9 @@ static int __devinit pca953x_probe(struct i2c_client *client,
{
struct pca953x_platform_data *pdata;
struct pca953x_chip *chip;
int irq_base=0, invert=0;
int irq_base = 0;
int ret;
u32 invert = 0;
chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL);
if (chip == NULL)

93
drivers/gpio/gpio-pcf857x.c
View File

@ -61,61 +61,28 @@ struct pcf857x {
struct i2c_client *client;
struct mutex lock; /* protect 'out' */
unsigned out; /* software latch */
int (*write)(struct i2c_client *client, unsigned data);
int (*read)(struct i2c_client *client);
};
/*-------------------------------------------------------------------------*/
/* Talk to 8-bit I/O expander */
static int pcf857x_input8(struct gpio_chip *chip, unsigned offset)
static int i2c_write_le8(struct i2c_client *client, unsigned data)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
int status;
mutex_lock(&gpio->lock);
gpio->out |= (1 << offset);
status = i2c_smbus_write_byte(gpio->client, gpio->out);
mutex_unlock(&gpio->lock);
return status;
return i2c_smbus_write_byte(client, data);
}
static int pcf857x_get8(struct gpio_chip *chip, unsigned offset)
static int i2c_read_le8(struct i2c_client *client)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
s32 value;
value = i2c_smbus_read_byte(gpio->client);
return (value < 0) ? 0 : (value & (1 << offset));
return (int)i2c_smbus_read_byte(client);
}
static int pcf857x_output8(struct gpio_chip *chip, unsigned offset, int value)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
unsigned bit = 1 << offset;
int status;
mutex_lock(&gpio->lock);
if (value)
gpio->out |= bit;
else
gpio->out &= ~bit;
status = i2c_smbus_write_byte(gpio->client, gpio->out);
mutex_unlock(&gpio->lock);
return status;
}
static void pcf857x_set8(struct gpio_chip *chip, unsigned offset, int value)
{
pcf857x_output8(chip, offset, value);
}
/*-------------------------------------------------------------------------*/
/* Talk to 16-bit I/O expander */
static int i2c_write_le16(struct i2c_client *client, u16 word)
static int i2c_write_le16(struct i2c_client *client, unsigned word)
{
u8 buf[2] = { word & 0xff, word >> 8, };
int status;
@ -135,29 +102,31 @@ static int i2c_read_le16(struct i2c_client *client)
return (buf[1] << 8) | buf[0];
}
static int pcf857x_input16(struct gpio_chip *chip, unsigned offset)
/*-------------------------------------------------------------------------*/
static int pcf857x_input(struct gpio_chip *chip, unsigned offset)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
int status;
mutex_lock(&gpio->lock);
gpio->out |= (1 << offset);
status = i2c_write_le16(gpio->client, gpio->out);
status = gpio->write(gpio->client, gpio->out);
mutex_unlock(&gpio->lock);
return status;
}
static int pcf857x_get16(struct gpio_chip *chip, unsigned offset)
static int pcf857x_get(struct gpio_chip *chip, unsigned offset)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
int value;
value = i2c_read_le16(gpio->client);
value = gpio->read(gpio->client);
return (value < 0) ? 0 : (value & (1 << offset));
}
static int pcf857x_output16(struct gpio_chip *chip, unsigned offset, int value)
static int pcf857x_output(struct gpio_chip *chip, unsigned offset, int value)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
unsigned bit = 1 << offset;
@ -168,15 +137,15 @@ static int pcf857x_output16(struct gpio_chip *chip, unsigned offset, int value)
gpio->out |= bit;
else
gpio->out &= ~bit;
status = i2c_write_le16(gpio->client, gpio->out);
status = gpio->write(gpio->client, gpio->out);
mutex_unlock(&gpio->lock);
return status;
}
static void pcf857x_set16(struct gpio_chip *chip, unsigned offset, int value)
static void pcf857x_set(struct gpio_chip *chip, unsigned offset, int value)
{
pcf857x_output16(chip, offset, value);
pcf857x_output(chip, offset, value);
}
/*-------------------------------------------------------------------------*/
@ -200,10 +169,15 @@ static int pcf857x_probe(struct i2c_client *client,
mutex_init(&gpio->lock);
gpio->chip.base = pdata ? pdata->gpio_base : -1;
gpio->chip.can_sleep = 1;
gpio->chip.dev = &client->dev;
gpio->chip.owner = THIS_MODULE;
gpio->chip.base = pdata ? pdata->gpio_base : -1;
gpio->chip.can_sleep = 1;
gpio->chip.dev = &client->dev;
gpio->chip.owner = THIS_MODULE;
gpio->chip.get = pcf857x_get;
gpio->chip.set = pcf857x_set;
gpio->chip.direction_input = pcf857x_input;
gpio->chip.direction_output = pcf857x_output;
gpio->chip.ngpio = id->driver_data;
/* NOTE: the OnSemi jlc1562b is also largely compatible with
* these parts, notably for output. It has a low-resolution
@ -216,12 +190,9 @@ static int pcf857x_probe(struct i2c_client *client,
*
* NOTE: we don't distinguish here between *4 and *4a parts.
*/
gpio->chip.ngpio = id->driver_data;
if (gpio->chip.ngpio == 8) {
gpio->chip.direction_input = pcf857x_input8;
gpio->chip.get = pcf857x_get8;
gpio->chip.direction_output = pcf857x_output8;
gpio->chip.set = pcf857x_set8;
gpio->write = i2c_write_le8;
gpio->read = i2c_read_le8;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE))
@ -238,10 +209,8 @@ static int pcf857x_probe(struct i2c_client *client,
* NOTE: we don't distinguish here between '75 and '75c parts.
*/
} else if (gpio->chip.ngpio == 16) {
gpio->chip.direction_input = pcf857x_input16;
gpio->chip.get = pcf857x_get16;
gpio->chip.direction_output = pcf857x_output16;
gpio->chip.set = pcf857x_set16;
gpio->write = i2c_write_le16;
gpio->read = i2c_read_le16;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
status = -EIO;

5
drivers/gpio/gpio-samsung.c
View File

@ -2681,11 +2681,14 @@ static int exynos_gpio_xlate(struct gpio_chip *gc,
if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
pr_warn("gpio_xlate: failed to set pin function\n");
if (s3c_gpio_setpull(pin, gpiospec->args[2]))
if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
pr_warn("gpio_xlate: failed to set pin pull up/down\n");
if (s5p_gpio_set_drvstr(pin, gpiospec->args[3]))
pr_warn("gpio_xlate: failed to set pin drive strength\n");
if (flags)
*flags = gpiospec->args[2] >> 16;
return gpiospec->args[0];
}

17
drivers/gpio/gpio-wm8994.c
View File

@ -19,6 +19,7 @@
#include <linux/mfd/core.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <linux/regmap.h>
#include <linux/mfd/wm8994/core.h>
#include <linux/mfd/wm8994/pdata.h>
@ -112,10 +113,7 @@ static int wm8994_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip);
struct wm8994 *wm8994 = wm8994_gpio->wm8994;
if (!wm8994->irq_base)
return -EINVAL;
return wm8994->irq_base + offset;
return regmap_irq_get_virq(wm8994->irq_data, offset);
}
@ -254,7 +252,8 @@ static int __devinit wm8994_gpio_probe(struct platform_device *pdev)
struct wm8994_gpio *wm8994_gpio;
int ret;
wm8994_gpio = kzalloc(sizeof(*wm8994_gpio), GFP_KERNEL);
wm8994_gpio = devm_kzalloc(&pdev->dev, sizeof(*wm8994_gpio),
GFP_KERNEL);
if (wm8994_gpio == NULL)
return -ENOMEM;
@ -279,20 +278,14 @@ static int __devinit wm8994_gpio_probe(struct platform_device *pdev)
return ret;
err:
kfree(wm8994_gpio);
return ret;
}
static int __devexit wm8994_gpio_remove(struct platform_device *pdev)
{
struct wm8994_gpio *wm8994_gpio = platform_get_drvdata(pdev);
int ret;
ret = gpiochip_remove(&wm8994_gpio->gpio_chip);
if (ret == 0)
kfree(wm8994_gpio);
return ret;
return gpiochip_remove(&wm8994_gpio->gpio_chip);
}
static struct platform_driver wm8994_gpio_driver = {

9
drivers/gpio/gpiolib-of.c
View File

@ -21,7 +21,7 @@
#include <linux/of_gpio.h>
#include <linux/slab.h>
/* Private data structure for of_gpiochip_is_match */
/* Private data structure for of_gpiochip_find_and_xlate */
struct gg_data {
enum of_gpio_flags *flags;
struct of_phandle_args gpiospec;
@ -62,7 +62,10 @@ static int of_gpiochip_find_and_xlate(struct gpio_chip *gc, void *data)
int of_get_named_gpio_flags(struct device_node *np, const char *propname,
int index, enum of_gpio_flags *flags)
{
struct gg_data gg_data = { .flags = flags, .out_gpio = -ENODEV };
/* Return -EPROBE_DEFER to support probe() functions to be called
* later when the GPIO actually becomes available
*/
struct gg_data gg_data = { .flags = flags, .out_gpio = -EPROBE_DEFER };
int ret;
/* .of_xlate might decide to not fill in the flags, so clear it. */
@ -73,7 +76,7 @@ int of_get_named_gpio_flags(struct device_node *np, const char *propname,
&gg_data.gpiospec);
if (ret) {
pr_debug("%s: can't parse gpios property\n", __func__);
return -EINVAL;
return ret;
}
gpiochip_find(&gg_data, of_gpiochip_find_and_xlate);

2
drivers/gpio/gpiolib.c
View File

@ -1186,7 +1186,7 @@ int gpio_request(unsigned gpio, const char *label)
{
struct gpio_desc *desc;
struct gpio_chip *chip;
int status = -EINVAL;
int status = -EPROBE_DEFER;
unsigned long flags;
spin_lock_irqsave(&gpio_lock, flags);

2
include/linux/i2c/pca953x.h
View File

@ -11,7 +11,7 @@ struct pca953x_platform_data {
unsigned gpio_base;
/* initial polarity inversion setting */
uint16_t invert;
u32 invert;
/* interrupt base */
int irq_base;