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OpenCloudOS-Kernel/drivers/tty/serial/amba-pl010.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Driver for AMBA serial ports
*
* Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
*
* Copyright 1999 ARM Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* This is a generic driver for ARM AMBA-type serial ports. They
* have a lot of 16550-like features, but are not register compatible.
* Note that although they do have CTS, DCD and DSR inputs, they do
* not have an RI input, nor do they have DTR or RTS outputs. If
* required, these have to be supplied via some other means (eg, GPIO)
* and hooked into this driver.
*/
#if defined(CONFIG_SERIAL_AMBA_PL010_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/sysrq.h>
#include <linux/device.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
#include <linux/serial.h>
[ARM] Move AMBA include files to include/linux/amba/ Since the ARM AMBA bus is used on MIPS as well as ARM, we need to make the bus available for other architectures to use. Move the AMBA include files from include/asm-arm/hardware/ to include/linux/amba/ Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-07 21:52:45 +08:00
#include <linux/amba/bus.h>
#include <linux/amba/serial.h>
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
#include <linux/clk.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
#include <linux/slab.h>
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
#include <linux/io.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] 3600/1: increase amba-pl010 UART_NR to 8 Patch from Lennert Buytenhek The cirrus ep93xx has 3 pl010 UARTs, while amba-pl010.c only allows for 2 by default. A while ago, I think we agreed on changing the 2 to 8, but I don't see this in 2.6.17 yet. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-21 02:24:07 +08:00
#define UART_NR 8
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#define SERIAL_AMBA_MAJOR 204
#define SERIAL_AMBA_MINOR 16
#define SERIAL_AMBA_NR UART_NR
#define AMBA_ISR_PASS_LIMIT 256
#define UART_RX_DATA(s) (((s) & UART01x_FR_RXFE) == 0)
#define UART_TX_READY(s) (((s) & UART01x_FR_TXFF) == 0)
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
#define UART_DUMMY_RSR_RX 256
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#define UART_PORT_SIZE 64
/*
* We wrap our port structure around the generic uart_port.
*/
struct uart_amba_port {
struct uart_port port;
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
struct clk *clk;
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
struct amba_device *dev;
struct amba_pl010_data *data;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int old_status;
};
[SERIAL] Clean up and fix tty transmission start/stoping The start_tx and stop_tx methods were passed a flag to indicate whether the start/stop was from the tty start/stop callbacks, and some drivers used this flag to decide whether to ask the UART to immediately stop transmission (where the UART supports such a feature.) There are other cases when we wish this to occur - when CTS is lowered, or if we change from soft to hard flow control and CTS is inactive. In these cases, this flag was false, and we would allow the transmitter to drain before stopping. There is really only one case where we want to let the transmitter drain before disabling, and that's when we run out of characters to send. Hence, re-jig the start_tx and stop_tx methods to eliminate this flag, and introduce new functions for the special "disable and allow transmitter to drain" case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-31 17:12:14 +08:00
static void pl010_stop_tx(struct uart_port *port)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int cr;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
cr = readb(uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
cr &= ~UART010_CR_TIE;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(cr, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[SERIAL] Clean up and fix tty transmission start/stoping The start_tx and stop_tx methods were passed a flag to indicate whether the start/stop was from the tty start/stop callbacks, and some drivers used this flag to decide whether to ask the UART to immediately stop transmission (where the UART supports such a feature.) There are other cases when we wish this to occur - when CTS is lowered, or if we change from soft to hard flow control and CTS is inactive. In these cases, this flag was false, and we would allow the transmitter to drain before stopping. There is really only one case where we want to let the transmitter drain before disabling, and that's when we run out of characters to send. Hence, re-jig the start_tx and stop_tx methods to eliminate this flag, and introduce new functions for the special "disable and allow transmitter to drain" case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-31 17:12:14 +08:00
static void pl010_start_tx(struct uart_port *port)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int cr;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
cr = readb(uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
cr |= UART010_CR_TIE;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(cr, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static void pl010_stop_rx(struct uart_port *port)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int cr;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
cr = readb(uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(cr, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
serial: Test/disable MSIs if switching from N_PPS Switching to the N_PPS line discipline may require enabling modem status interrupts; conversely switching from N_PPS may require disabling modem status interrupts. Affected drivers: 8250 amba-pl010 atmel Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:45 +08:00
static void pl010_disable_ms(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int cr;
cr = readb(uap->port.membase + UART010_CR);
cr &= ~UART010_CR_MSIE;
writel(cr, uap->port.membase + UART010_CR);
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static void pl010_enable_ms(struct uart_port *port)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int cr;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
cr = readb(uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
cr |= UART010_CR_MSIE;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(cr, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
static void pl010_rx_chars(struct uart_amba_port *uap)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
unsigned int status, ch, flag, rsr, max_count = 256;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART01x_FR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
while (UART_RX_DATA(status) && max_count--) {
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
ch = readb(uap->port.membase + UART01x_DR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
flag = TTY_NORMAL;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.icount.rx++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Note that the error handling code is
* out of the main execution path
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
[PATCH] Serial: Ensure error paths are marked with unlikely() Ensure ARM serial driver error paths are marked with the unlikely() compiler hint. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-04-26 22:29:44 +08:00
if (unlikely(rsr & UART01x_RSR_ANY)) {
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(0, uap->port.membase + UART01x_ECR);
[PATCH] amba-pl010: clear error flags on rx error The pl010 primecell documentation specifies that an error indicated via RSR should be cleared by a write to ECR. We didn't do this, which was causing errors to be re-reported on every call to pl010_rx_chars(). Doing a write to ECR once we detect an error appears to prevent the ep93xx console UART driver from going into a mode where it reports "ttyAM0: X input overrun(s)" every couple of keystrokes. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 12:39:57 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (rsr & UART01x_RSR_BE) {
rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.icount.brk++;
if (uart_handle_break(&uap->port))
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
goto ignore_char;
} else if (rsr & UART01x_RSR_PE)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.icount.parity++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
else if (rsr & UART01x_RSR_FE)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.icount.frame++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (rsr & UART01x_RSR_OE)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.icount.overrun++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
rsr &= uap->port.read_status_mask;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (rsr & UART01x_RSR_BE)
flag = TTY_BREAK;
else if (rsr & UART01x_RSR_PE)
flag = TTY_PARITY;
else if (rsr & UART01x_RSR_FE)
flag = TTY_FRAME;
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
if (uart_handle_sysrq_char(&uap->port, ch))
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
goto ignore_char;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
[PATCH] Serial: Add uart_insert_char() Add uart_insert_char(), which handles inserting characters into the flip buffer. This helper function handles the correct semantics for handling overrun in addition to inserting normal characters. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-10 06:21:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ignore_char:
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART01x_FR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[ARM] Fix 4417/1: Serial: Fix AMBA drivers locking 2389b272168ceec056ca1d8a870a97fa9c26e11a contains a merge bug; fix it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-06-06 02:39:49 +08:00
spin_unlock(&uap->port.lock);
TTY: switch tty_flip_buffer_push Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. Now, the one where most of tty_port_tty_get gets removed: tty_flip_buffer_push. IOW we also closed all the races in drivers not using tty_port_tty_get at all yet. Also we move tty_flip_buffer_push declaration from include/linux/tty.h to include/linux/tty_flip.h to all others while we are changing it anyway. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 22:53:06 +08:00
tty_flip_buffer_push(&uap->port.state->port);
[ARM] Fix 4417/1: Serial: Fix AMBA drivers locking 2389b272168ceec056ca1d8a870a97fa9c26e11a contains a merge bug; fix it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-06-06 02:39:49 +08:00
spin_lock(&uap->port.lock);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
static void pl010_tx_chars(struct uart_amba_port *uap)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
serial: kill off uart_info We moved this into uart_state, now move the fields out of the separate structure and kill it off. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-20 04:13:28 +08:00
struct circ_buf *xmit = &uap->port.state->xmit;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int count;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
if (uap->port.x_char) {
writel(uap->port.x_char, uap->port.membase + UART01x_DR);
uap->port.icount.tx++;
uap->port.x_char = 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return;
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
pl010_stop_tx(&uap->port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return;
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
count = uap->port.fifosize >> 1;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
do {
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.icount.tx++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (uart_circ_empty(xmit))
break;
} while (--count > 0);
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uart_write_wakeup(&uap->port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (uart_circ_empty(xmit))
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
pl010_stop_tx(&uap->port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
static void pl010_modem_status(struct uart_amba_port *uap)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
unsigned int status, delta;
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
writel(0, uap->port.membase + UART010_ICR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
delta = status ^ uap->old_status;
uap->old_status = status;
if (!delta)
return;
if (delta & UART01x_FR_DCD)
uart_handle_dcd_change(&uap->port, status & UART01x_FR_DCD);
if (delta & UART01x_FR_DSR)
uap->port.icount.dsr++;
if (delta & UART01x_FR_CTS)
uart_handle_cts_change(&uap->port, status & UART01x_FR_CTS);
serial: move delta_msr_wait into the tty_port This is used by various drivers not just serial and can be extracted as commonality Signed-off-by: Alan Cox <alan@linux.intel.com>
2009-09-20 04:13:31 +08:00
wake_up_interruptible(&uap->port.state->port.delta_msr_wait);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 21:55:46 +08:00
static irqreturn_t pl010_int(int irq, void *dev_id)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
struct uart_amba_port *uap = dev_id;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT;
int handled = 0;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
spin_lock(&uap->port.lock);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART010_IIR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (status) {
do {
if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
pl010_rx_chars(uap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (status & UART010_IIR_MIS)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
pl010_modem_status(uap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (status & UART010_IIR_TIS)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
pl010_tx_chars(uap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (pass_counter-- == 0)
break;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART010_IIR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
} while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
UART010_IIR_TIS));
handled = 1;
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
spin_unlock(&uap->port.lock);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return IRQ_RETVAL(handled);
}
static unsigned int pl010_tx_empty(struct uart_port *port)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
unsigned int status = readb(uap->port.membase + UART01x_FR);
return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static unsigned int pl010_get_mctrl(struct uart_port *port)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int result = 0;
unsigned int status;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART01x_FR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (status & UART01x_FR_DCD)
result |= TIOCM_CAR;
if (status & UART01x_FR_DSR)
result |= TIOCM_DSR;
if (status & UART01x_FR_CTS)
result |= TIOCM_CTS;
return result;
}
static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
if (uap->data)
uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static void pl010_break_ctl(struct uart_port *port, int break_state)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned long flags;
unsigned int lcr_h;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
spin_lock_irqsave(&uap->port.lock, flags);
lcr_h = readb(uap->port.membase + UART010_LCRH);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (break_state == -1)
lcr_h |= UART01x_LCRH_BRK;
else
lcr_h &= ~UART01x_LCRH_BRK;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(lcr_h, uap->port.membase + UART010_LCRH);
spin_unlock_irqrestore(&uap->port.lock, flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static int pl010_startup(struct uart_port *port)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int retval;
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
/*
* Try to enable the clock producer.
*/
drivers/tty/serial/amba-pl0{10,11}.c: use clk_prepare_enable and clk_disable_unprepare Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. The9 make the code more concise, and ensure that clk_unprepare is called when clk_enable fails. A simplified version of the semantic patch that introduces calls to these functions is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ - clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e); @@ expression e; @@ - clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-27 00:01:01 +08:00
retval = clk_prepare_enable(uap->clk);
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
if (retval)
drivers/tty/serial/amba-pl0{10,11}.c: use clk_prepare_enable and clk_disable_unprepare Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. The9 make the code more concise, and ensure that clk_unprepare is called when clk_enable fails. A simplified version of the semantic patch that introduces calls to these functions is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ - clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e); @@ expression e; @@ - clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-27 00:01:01 +08:00
goto out;
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
uap->port.uartclk = clk_get_rate(uap->clk);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Allocate the IRQ
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
retval = request_irq(uap->port.irq, pl010_int, 0, "uart-pl010", uap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (retval)
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
goto clk_dis;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* initialise the old status of the modem signals
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Finally, enable interrupts
*/
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return 0;
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
clk_dis:
drivers/tty/serial/amba-pl0{10,11}.c: use clk_prepare_enable and clk_disable_unprepare Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. The9 make the code more concise, and ensure that clk_unprepare is called when clk_enable fails. A simplified version of the semantic patch that introduces calls to these functions is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ - clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e); @@ expression e; @@ - clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-27 00:01:01 +08:00
clk_disable_unprepare(uap->clk);
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
out:
return retval;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static void pl010_shutdown(struct uart_port *port)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Free the interrupt
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
free_irq(uap->port.irq, uap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* disable all interrupts, disable the port
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(0, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* disable break condition and fifos */
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(readb(uap->port.membase + UART010_LCRH) &
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.membase + UART010_LCRH);
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
/*
* Shut down the clock producer
*/
drivers/tty/serial/amba-pl0{10,11}.c: use clk_prepare_enable and clk_disable_unprepare Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. The9 make the code more concise, and ensure that clk_unprepare is called when clk_enable fails. A simplified version of the semantic patch that introduces calls to these functions is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ - clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e); @@ expression e; @@ - clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-27 00:01:01 +08:00
clk_disable_unprepare(uap->clk);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static void
[PATCH] tty: switch to ktermios This is the grungy swap all the occurrences in the right places patch that goes with the updates. At this point we have the same functionality as before (except that sgttyb() returns speeds not zero) and are ready to begin turning new stuff on providing nobody reports lots of bugs If you are a tty driver author converting an out of tree driver the only impact should be termios->ktermios name changes for the speed/property setting functions from your upper layers. If you are implementing your own TCGETS function before then your driver was broken already and its about to get a whole lot more painful for you so please fix it 8) Also fill in c_ispeed/ospeed on init for most devices, although the current code will do this for you anyway but I'd like eventually to lose that extra paranoia [akpm@osdl.org: bluetooth fix] [mp3@de.ibm.com: sclp fix] [mp3@de.ibm.com: warning fix for tty3270] [hugh@veritas.com: fix tty_ioctl powerpc build] [jdike@addtoit.com: uml: fix ->set_termios declaration] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Acked-by: Peter Oberparleiter <oberpar@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 18:38:45 +08:00
pl010_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int lcr_h, old_cr;
unsigned long flags;
unsigned int baud, quot;
/*
* Ask the core to calculate the divisor for us.
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
quot = uart_get_divisor(port, baud);
switch (termios->c_cflag & CSIZE) {
case CS5:
lcr_h = UART01x_LCRH_WLEN_5;
break;
case CS6:
lcr_h = UART01x_LCRH_WLEN_6;
break;
case CS7:
lcr_h = UART01x_LCRH_WLEN_7;
break;
default: // CS8
lcr_h = UART01x_LCRH_WLEN_8;
break;
}
if (termios->c_cflag & CSTOPB)
lcr_h |= UART01x_LCRH_STP2;
if (termios->c_cflag & PARENB) {
lcr_h |= UART01x_LCRH_PEN;
if (!(termios->c_cflag & PARODD))
lcr_h |= UART01x_LCRH_EPS;
}
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
if (uap->port.fifosize > 1)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
lcr_h |= UART01x_LCRH_FEN;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
spin_lock_irqsave(&uap->port.lock, flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Update the per-port timeout.
*/
uart_update_timeout(port, termios->c_cflag, baud);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.read_status_mask = UART01x_RSR_OE;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (termios->c_iflag & INPCK)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.read_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
serial: Fix IGNBRK handling If IGNBRK is set without either BRKINT or PARMRK set, some uart drivers send a 0x00 byte for BREAK without the TTYBREAK flag to the line discipline, when it should send either nothing or the TTYBREAK flag set. This happens because the read_status_mask masks out the BI condition, which uart_insert_char() then interprets as a normal 0x00 byte. SUS v3 is clear regarding the meaning of IGNBRK; Section 11.2.2, General Terminal Interface - Input Modes, states: "If IGNBRK is set, a break condition detected on input shall be ignored; that is, not put on the input queue and therefore not read by any process." Fix read_status_mask to include the BI bit if IGNBRK is set; the lsr status retains the BI bit if a BREAK is recv'd, which is subsequently ignored in uart_insert_char() when masked with the ignore_status_mask. Affected drivers: 8250 - all serial_txx9 mfd amba-pl010 amba-pl011 atmel_serial bfin_uart dz ip22zilog max310x mxs-auart netx-serial pnx8xxx_uart pxa sb1250-duart sccnxp serial_ks8695 sirfsoc_uart st-asc vr41xx_siu zs sunzilog fsl_lpuart sunsab ucc_uart bcm63xx_uart sunsu efm32-uart pmac_zilog mpsc msm_serial m32r_sio Unaffected drivers: omap-serial rp2 sa1100 imx icom Annotated for fixes: altera_uart mcf Drivers without break detection: 21285 xilinx-uartps altera_jtaguart apbuart arc-uart clps711x max3100 uartlite msm_serial_hs nwpserial lantiq vt8500_serial Unknown: samsung mpc52xx_uart bfin_sport_uart cpm_uart/core Fixes: Bugzilla #71651, '8250_core.c incorrectly handles IGNBRK flag' Reported-by: Ivan <athlon_@mail.ru> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-16 20:10:41 +08:00
if (termios->c_iflag & (IGNBRK | BRKINT | PARMRK))
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.read_status_mask |= UART01x_RSR_BE;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Characters to ignore
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.ignore_status_mask = 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (termios->c_iflag & IGNPAR)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.ignore_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (termios->c_iflag & IGNBRK) {
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.ignore_status_mask |= UART01x_RSR_BE;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* If we're ignoring parity and break indicators,
* ignore overruns too (for real raw support).
*/
if (termios->c_iflag & IGNPAR)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.ignore_status_mask |= UART01x_RSR_OE;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
/*
* Ignore all characters if CREAD is not set.
*/
if ((termios->c_cflag & CREAD) == 0)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* first, disable everything */
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (UART_ENABLE_MS(port, termios->c_cflag))
old_cr |= UART010_CR_MSIE;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(0, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Set baud rate */
quot -= 1;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
writel(quot & 0xff, uap->port.membase + UART010_LCRL);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* ----------v----------v----------v----------v-----
* NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
* ----------^----------^----------^----------^-----
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(lcr_h, uap->port.membase + UART010_LCRH);
writel(old_cr, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
spin_unlock_irqrestore(&uap->port.lock, flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
serial: core: Pass termios to set_ldisc() notifications UART drivers which enable modem status interrupts when switching to N_PPS line discipline need to determine if modem status interrupts should be disabled when switching from N_PPS. Specifically, the set_ldisc() notification needs to evaluate UART_ENABLE_MS() which requires termios->c_cflag. Convert in-tree UART drivers to new interface. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:43 +08:00
static void pl010_set_ldisc(struct uart_port *port, struct ktermios *termios)
serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-11 07:23:48 +08:00
{
serial: core: Pass termios to set_ldisc() notifications UART drivers which enable modem status interrupts when switching to N_PPS line discipline need to determine if modem status interrupts should be disabled when switching from N_PPS. Specifically, the set_ldisc() notification needs to evaluate UART_ENABLE_MS() which requires termios->c_cflag. Convert in-tree UART drivers to new interface. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:43 +08:00
if (termios->c_line == N_PPS) {
serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-11 07:23:48 +08:00
port->flags |= UPF_HARDPPS_CD;
serial: Take uart port lock for direct *_enable_ms() Three UART drivers (8250, atmel & amba-pl010) directly call their enable_ms() method; the uart port lock must be acquired before any h/w programming. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:44 +08:00
spin_lock_irq(&port->lock);
serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-11 07:23:48 +08:00
pl010_enable_ms(port);
serial: Take uart port lock for direct *_enable_ms() Three UART drivers (8250, atmel & amba-pl010) directly call their enable_ms() method; the uart port lock must be acquired before any h/w programming. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:44 +08:00
spin_unlock_irq(&port->lock);
serial: Test/disable MSIs if switching from N_PPS Switching to the N_PPS line discipline may require enabling modem status interrupts; conversely switching from N_PPS may require disabling modem status interrupts. Affected drivers: 8250 amba-pl010 atmel Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:45 +08:00
} else {
serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-11 07:23:48 +08:00
port->flags &= ~UPF_HARDPPS_CD;
serial: Test/disable MSIs if switching from N_PPS Switching to the N_PPS line discipline may require enabling modem status interrupts; conversely switching from N_PPS may require disabling modem status interrupts. Affected drivers: 8250 amba-pl010 atmel Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 02:11:45 +08:00
if (!UART_ENABLE_MS(port, termios->c_cflag)) {
spin_lock_irq(&port->lock);
pl010_disable_ms(port);
spin_unlock_irq(&port->lock);
}
}
serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-11 07:23:48 +08:00
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static const char *pl010_type(struct uart_port *port)
{
return port->type == PORT_AMBA ? "AMBA" : NULL;
}
/*
* Release the memory region(s) being used by 'port'
*/
static void pl010_release_port(struct uart_port *port)
{
release_mem_region(port->mapbase, UART_PORT_SIZE);
}
/*
* Request the memory region(s) being used by 'port'
*/
static int pl010_request_port(struct uart_port *port)
{
return request_mem_region(port->mapbase, UART_PORT_SIZE, "uart-pl010")
!= NULL ? 0 : -EBUSY;
}
/*
* Configure/autoconfigure the port.
*/
static void pl010_config_port(struct uart_port *port, int flags)
{
if (flags & UART_CONFIG_TYPE) {
port->type = PORT_AMBA;
pl010_request_port(port);
}
}
/*
* verify the new serial_struct (for TIOCSSERIAL).
*/
static int pl010_verify_port(struct uart_port *port, struct serial_struct *ser)
{
int ret = 0;
if (ser->type != PORT_UNKNOWN && ser->type != PORT_AMBA)
ret = -EINVAL;
drivers/serial: use nr_irqs Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-20 11:49:55 +08:00
if (ser->irq < 0 || ser->irq >= nr_irqs)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ret = -EINVAL;
if (ser->baud_base < 9600)
ret = -EINVAL;
return ret;
}
static struct uart_ops amba_pl010_pops = {
.tx_empty = pl010_tx_empty,
.set_mctrl = pl010_set_mctrl,
.get_mctrl = pl010_get_mctrl,
.stop_tx = pl010_stop_tx,
.start_tx = pl010_start_tx,
.stop_rx = pl010_stop_rx,
.enable_ms = pl010_enable_ms,
.break_ctl = pl010_break_ctl,
.startup = pl010_startup,
.shutdown = pl010_shutdown,
.set_termios = pl010_set_termios,
serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-11 07:23:48 +08:00
.set_ldisc = pl010_set_ldisc,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
.type = pl010_type,
.release_port = pl010_release_port,
.request_port = pl010_request_port,
.config_port = pl010_config_port,
.verify_port = pl010_verify_port,
};
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
static struct uart_amba_port *amba_ports[UART_NR];
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
[SERIAL] kernel console should send CRLF not LFCR Glen Turner reported that writing LFCR rather than the more traditional CRLF causes issues with some terminals. Since this aflicts many serial drivers, extract the common code to a library function (uart_console_write) and arrange for each driver to supply a "putchar" function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 04:00:09 +08:00
static void pl010_console_putchar(struct uart_port *port, int ch)
{
serial: amba-pl010: use container_of to resolve uart_amba_port from uart_port Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-06 01:19:46 +08:00
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
unsigned int status;
do {
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART01x_FR);
[SERIAL] kernel console should send CRLF not LFCR Glen Turner reported that writing LFCR rather than the more traditional CRLF causes issues with some terminals. Since this aflicts many serial drivers, extract the common code to a library function (uart_console_write) and arrange for each driver to supply a "putchar" function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 04:00:09 +08:00
barrier();
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
} while (!UART_TX_READY(status));
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(ch, uap->port.membase + UART01x_DR);
[SERIAL] kernel console should send CRLF not LFCR Glen Turner reported that writing LFCR rather than the more traditional CRLF causes issues with some terminals. Since this aflicts many serial drivers, extract the common code to a library function (uart_console_write) and arrange for each driver to supply a "putchar" function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 04:00:09 +08:00
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static void
pl010_console_write(struct console *co, const char *s, unsigned int count)
{
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
struct uart_amba_port *uap = amba_ports[co->index];
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int status, old_cr;
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
clk_enable(uap->clk);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* First save the CR then disable the interrupts
*/
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
old_cr = readb(uap->port.membase + UART010_CR);
writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uart_console_write(&uap->port, s, count, pl010_console_putchar);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Finally, wait for transmitter to become empty
* and restore the TCR
*/
do {
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
status = readb(uap->port.membase + UART01x_FR);
[SERIAL] amba-pl010: Remove accessor macros Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 05:30:11 +08:00
barrier();
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
} while (status & UART01x_FR_BUSY);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
writel(old_cr, uap->port.membase + UART010_CR);
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
clk_disable(uap->clk);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static void __init
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
pl010_console_get_options(struct uart_amba_port *uap, int *baud,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int *parity, int *bits)
{
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int lcr_h, quot;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
lcr_h = readb(uap->port.membase + UART010_LCRH);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*parity = 'n';
if (lcr_h & UART01x_LCRH_PEN) {
if (lcr_h & UART01x_LCRH_EPS)
*parity = 'e';
else
*parity = 'o';
}
if ((lcr_h & 0x60) == UART01x_LCRH_WLEN_7)
*bits = 7;
else
*bits = 8;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
quot = readb(uap->port.membase + UART010_LCRL) |
readb(uap->port.membase + UART010_LCRM) << 8;
*baud = uap->port.uartclk / (16 * (quot + 1));
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
}
static int __init pl010_console_setup(struct console *co, char *options)
{
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
struct uart_amba_port *uap;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int baud = 38400;
int bits = 8;
int parity = 'n';
int flow = 'n';
clk: amba-pl010: convert to clk_prepare()/clk_unprepare() Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-22 18:35:09 +08:00
int ret;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Check whether an invalid uart number has been specified, and
* if so, search for the first available port that does have
* console support.
*/
if (co->index >= UART_NR)
co->index = 0;
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap = amba_ports[co->index];
if (!uap)
[ARM] Fix AMBA serial drivers for non-first serial ports Using console=ttyAM1 or console=ttyAMA1 resulted in an oops during boot due to trying to drive the console before that port had been registered. Fix this by checking whether the port is present before allowing console setup to proceed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-23 02:59:42 +08:00
return -ENODEV;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
clk: amba-pl010: convert to clk_prepare()/clk_unprepare() Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-22 18:35:09 +08:00
ret = clk_prepare(uap->clk);
if (ret)
return ret;
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
uap->port.uartclk = clk_get_rate(uap->clk);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
else
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
pl010_console_get_options(uap, &baud, &parity, &bits);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
return uart_set_options(&uap->port, co, baud, parity, bits, flow);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[ARM] 2907/1: GCC 4 serial driver compile fixes Patch from Vincent Sanders When building the ARM platforms several serial drivers fail to compile with GCC 4.01 due to extern/static ambiguity. Signed-off-by: Vincent Sanders <vince@arm.linux.org.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 05:36:03 +08:00
static struct uart_driver amba_reg;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static struct console amba_console = {
.name = "ttyAM",
.write = pl010_console_write,
.device = uart_console_device,
.setup = pl010_console_setup,
.flags = CON_PRINTBUFFER,
.index = -1,
.data = &amba_reg,
};
#define AMBA_CONSOLE &amba_console
#else
#define AMBA_CONSOLE NULL
#endif
static struct uart_driver amba_reg = {
.owner = THIS_MODULE,
.driver_name = "ttyAM",
.dev_name = "ttyAM",
.major = SERIAL_AMBA_MAJOR,
.minor = SERIAL_AMBA_MINOR,
.nr = UART_NR,
.cons = AMBA_CONSOLE,
};
ARM: amba: make probe() functions take const id tables Make Primecell driver probe functions take a const pointer to their ID tables. Drivers should never modify their ID tables in their probe handler. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-19 23:55:00 +08:00
static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
struct uart_amba_port *uap;
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
void __iomem *base;
int i, ret;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
if (amba_ports[i] == NULL)
break;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
if (i == ARRAY_SIZE(amba_ports))
return -EBUSY;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
uap = devm_kzalloc(&dev->dev, sizeof(struct uart_amba_port),
GFP_KERNEL);
if (!uap)
return -ENOMEM;
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
base = devm_ioremap(&dev->dev, dev->res.start,
resource_size(&dev->res));
if (!base)
return -ENOMEM;
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
uap->clk = devm_clk_get(&dev->dev, NULL);
if (IS_ERR(uap->clk))
return PTR_ERR(uap->clk);
[ARM] Convert AMBA PL010 driver to use the clk infrastructure Convert the AMBA PL010 serial driver to use the clock infrastructure to allow EP93xx platforms to properly gate the clock to the UARTs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 19:30:41 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uap->port.dev = &dev->dev;
uap->port.mapbase = dev->res.start;
uap->port.membase = base;
uap->port.iotype = UPIO_MEM;
uap->port.irq = dev->irq[0];
uap->port.fifosize = 16;
uap->port.ops = &amba_pl010_pops;
uap->port.flags = UPF_BOOT_AUTOCONF;
uap->port.line = i;
uap->dev = dev;
serial: use dev_get_platdata() Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-30 16:06:57 +08:00
uap->data = dev_get_platdata(&dev->dev);
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
amba_ports[i] = uap;
amba_set_drvdata(dev, uap);
ret = uart_add_one_port(&amba_reg, &uap->port);
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
if (ret)
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
amba_ports[i] = NULL;
serial: amba-pl010: Use devres APIs Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 18:05:36 +08:00
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
return ret;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static int pl010_remove(struct amba_device *dev)
{
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
struct uart_amba_port *uap = amba_get_drvdata(dev);
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
int i;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
uart_remove_one_port(&amba_reg, &uap->port);
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' Use a pointer to struct uart_amba_port throughout the driver rather than a mixture of that and struct uart_port. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-22 18:55:59 +08:00
if (amba_ports[i] == uap)
[SERIAL] amba-pl010: allow platforms to specify modem control method The amba-pl010 hardware does not provide RTS and DTR control lines; it is expected that these will be implemented using GPIO. Allow platforms to supply a function to implement manipulation of modem control lines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-27 06:13:39 +08:00
amba_ports[i] = NULL;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return 0;
}
serial: pl010: Convert to modern PM ops Convert to modern PM ops and use the SIMPLE_DEV_PM_OPS macro to set up the PM callbacks. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-03 18:04:27 +08:00
#ifdef CONFIG_PM_SLEEP
static int pl010_suspend(struct device *dev)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
serial: pl010: Convert to modern PM ops Convert to modern PM ops and use the SIMPLE_DEV_PM_OPS macro to set up the PM callbacks. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-03 18:04:27 +08:00
struct uart_amba_port *uap = dev_get_drvdata(dev);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (uap)
uart_suspend_port(&amba_reg, &uap->port);
return 0;
}
serial: pl010: Convert to modern PM ops Convert to modern PM ops and use the SIMPLE_DEV_PM_OPS macro to set up the PM callbacks. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-03 18:04:27 +08:00
static int pl010_resume(struct device *dev)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
serial: pl010: Convert to modern PM ops Convert to modern PM ops and use the SIMPLE_DEV_PM_OPS macro to set up the PM callbacks. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-03 18:04:27 +08:00
struct uart_amba_port *uap = dev_get_drvdata(dev);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (uap)
uart_resume_port(&amba_reg, &uap->port);
return 0;
}
serial: pl010: Convert to modern PM ops Convert to modern PM ops and use the SIMPLE_DEV_PM_OPS macro to set up the PM callbacks. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-03 18:04:27 +08:00
#endif
static SIMPLE_DEV_PM_OPS(pl010_dev_pm_ops, pl010_suspend, pl010_resume);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ARM: Fix section build warnings for AMBA drivers Found in the Versatile build: WARNING: drivers/built-in.o(.data+0x14c): Section mismatch in reference from the variable pl061_gpio_driver to the (unknown reference) .init.data:(unknown) The variable pl061_gpio_driver references the (unknown reference) __initdata (unknown) WARNING: drivers/built-in.o(.data+0x40f8): Section mismatch in reference from the variable pl011_driver to the (unknown reference) .init.data:(unknown) The variable pl011_driver references the (unknown reference) __initdata (unknown) WARNING: drivers/built-in.o(.data+0x5ab4): Section mismatch in reference from the variable pl031_driver to the (unknown reference) .init.data:(unknown) The variable pl031_driver references the (unknown reference) __initdata (unknown) Basically, amba_id structures must not be __initdata. Also fix: WARNING: drivers/built-in.o(.data+0x138): Section mismatch in reference from the variable pl061_gpio_driver to the function .init.text:pl061_probe() The variable pl061_gpio_driver references the function __init pl061_probe() which is an incorrectly annotated probe function. Fix it to reflect the other AMBA bus probe functions by removing the __init attributation. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-27 15:50:16 +08:00
static struct amba_id pl010_ids[] = {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
.id = 0x00041010,
.mask = 0x000fffff,
},
{ 0, 0 },
};
serial: pl010: Enable module alias autogeneration for AMBA drivers Signed-off-by: Dave Martin <dave.martin@linaro.org>
2011-10-05 22:15:22 +08:00
MODULE_DEVICE_TABLE(amba, pl010_ids);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static struct amba_driver pl010_driver = {
.drv = {
.name = "uart-pl010",
serial: pl010: Convert to modern PM ops Convert to modern PM ops and use the SIMPLE_DEV_PM_OPS macro to set up the PM callbacks. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-03 18:04:27 +08:00
.pm = &pl010_dev_pm_ops,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
},
.id_table = pl010_ids,
.probe = pl010_probe,
.remove = pl010_remove,
};
static int __init pl010_init(void)
{
int ret;
drivers/serial/: remove CVS keywords This patch removes CVS keywords that weren't updated for a long time in comments, printk's and MODULE_DESCRIPTION's (no printk's or MODULE_DESCRIPTION's are completely removed). While doing this I also found and fixed a missing \n in a printk in m32r_sio.c Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-17 04:53:31 +08:00
printk(KERN_INFO "Serial: AMBA driver\n");
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ret = uart_register_driver(&amba_reg);
if (ret == 0) {
ret = amba_driver_register(&pl010_driver);
if (ret)
uart_unregister_driver(&amba_reg);
}
return ret;
}
static void __exit pl010_exit(void)
{
amba_driver_unregister(&pl010_driver);
uart_unregister_driver(&amba_reg);
}
module_init(pl010_init);
module_exit(pl010_exit);
MODULE_AUTHOR("ARM Ltd/Deep Blue Solutions Ltd");
drivers/serial/: remove CVS keywords This patch removes CVS keywords that weren't updated for a long time in comments, printk's and MODULE_DESCRIPTION's (no printk's or MODULE_DESCRIPTION's are completely removed). While doing this I also found and fixed a missing \n in a printk in m32r_sio.c Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-17 04:53:31 +08:00
MODULE_DESCRIPTION("ARM AMBA serial port driver");
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
MODULE_LICENSE("GPL");