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Merge branch 'msm-core' of git://codeaurora.org/quic/kernel/dwalker/linux-msm into devel-stable

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This commit is contained in:
Russell King
2010-10-19 19:55:59 +01:00
parent 7f9c7e2811 88b5227710
commit 3c00079b31
42 changed files with 5974 additions and 247 deletions
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Documentation/arm/00-INDEX
+2
View File
@@ -6,6 +6,8 @@ Interrupts
- ARM Interrupt subsystem documentation
IXP2000
- Release Notes for Linux on Intel's IXP2000 Network Processor
msm
- MSM specific documentation
Netwinder
- Netwinder specific documentation
Porting
Documentation/arm/msm/gpiomux.txt
+176
View File
@@ -0,0 +1,176 @@
This document provides an overview of the msm_gpiomux interface, which
is used to provide gpio pin multiplexing and configuration on mach-msm
targets.
History
=======
The first-generation API for gpio configuration & multiplexing on msm
is the function gpio_tlmm_config(). This function has a few notable
shortcomings, which led to its deprecation and replacement by gpiomux:
The 'disable' parameter: Setting the second parameter to
gpio_tlmm_config to GPIO_CFG_DISABLE tells the peripheral
processor in charge of the subsystem to perform a look-up into a
low-power table and apply the low-power/sleep setting for the pin.
As the msm family evolved this became problematic. Not all pins
have sleep settings, not all peripheral processors will accept requests
to apply said sleep settings, and not all msm targets have their gpio
subsystems managed by a peripheral processor. In order to get consistent
behavior on all targets, drivers are forced to ignore this parameter,
rendering it useless.
The 'direction' flag: for all mux-settings other than raw-gpio (0),
the output-enable bit of a gpio is hard-wired to a known
input (usually VDD or ground). For those settings, the direction flag
is meaningless at best, and deceptive at worst. In addition, using the
direction flag to change output-enable (OE) directly can cause trouble in
gpiolib, which has no visibility into gpio direction changes made
in this way. Direction control in gpio mode should be made through gpiolib.
Key Features of gpiomux
=======================
- A consistent interface across all generations of msm. Drivers can expect
the same results on every target.
- gpiomux plays nicely with gpiolib. Functions that should belong to gpiolib
are left to gpiolib and not duplicated here. gpiomux is written with the
intent that gpio_chips will call gpiomux reference-counting methods
from their request() and free() hooks, providing full integration.
- Tabular configuration. Instead of having to call gpio_tlmm_config
hundreds of times, gpio configuration is placed in a single table.
- Per-gpio sleep. Each gpio is individually reference counted, allowing only
those lines which are in use to be put in high-power states.
- 0 means 'do nothing': all flags are designed so that the default memset-zero
equates to a sensible default of 'no configuration', preventing users
from having to provide hundreds of 'no-op' configs for unused or
unwanted lines.
Usage
=====
To use gpiomux, provide configuration information for relevant gpio lines
in the msm_gpiomux_configs table. Since a 0 equates to "unconfigured",
only those lines to be managed by gpiomux need to be specified. Here
is a completely fictional example:
struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
[12] = {
.active = GPIOMUX_VALID | GPIOMUX_DRV_8MA | GPIOMUX_FUNC_1,
.suspended = GPIOMUX_VALID | GPIOMUX_PULL_DOWN,
},
[34] = {
.suspended = GPIOMUX_VALID | GPIOMUX_PULL_DOWN,
},
};
To indicate that a gpio is in use, call msm_gpiomux_get() to increase
its reference count. To decrease the reference count, call msm_gpiomux_put().
The effect of this configuration is as follows:
When the system boots, gpios 12 and 34 will be initialized with their
'suspended' configurations. All other gpios, which were left unconfigured,
will not be touched.
When msm_gpiomux_get() is called on gpio 12 to raise its reference count
above 0, its active configuration will be applied. Since no other gpio
line has a valid active configuration, msm_gpiomux_get() will have no
effect on any other line.
When msm_gpiomux_put() is called on gpio 12 or 34 to drop their reference
count to 0, their suspended configurations will be applied.
Since no other gpio line has a valid suspended configuration, no other
gpio line will be effected by msm_gpiomux_put(). Since gpio 34 has no valid
active configuration, this is effectively a no-op for gpio 34 as well,
with one small caveat, see the section "About Output-Enable Settings".
All of the GPIOMUX_VALID flags may seem like unnecessary overhead, but
they address some important issues. As unused entries (all those
except 12 and 34) are zero-filled, gpiomux needs a way to distinguish
the used fields from the unused. In addition, the all-zero pattern
is a valid configuration! Therefore, gpiomux defines an additional bit
which is used to indicate when a field is used. This has the pleasant
side-effect of allowing calls to msm_gpiomux_write to use '0' to indicate
that a value should not be changed:
msm_gpiomux_write(0, GPIOMUX_VALID, 0);
replaces the active configuration of gpio 0 with an all-zero configuration,
but leaves the suspended configuration as it was.
Static Configurations
=====================
To install a static configuration, which is applied at boot and does
not change after that, install a configuration with a suspended component
but no active component, as in the previous example:
[34] = {
.suspended = GPIOMUX_VALID | GPIOMUX_PULL_DOWN,
},
The suspended setting is applied during boot, and the lack of any valid
active setting prevents any other setting from being applied at runtime.
If other subsystems attempting to access the line is a concern, one could
*really* anchor the configuration down by calling msm_gpiomux_get on the
line at initialization to move the line into active mode. With the line
held, it will never be re-suspended, and with no valid active configuration,
no new configurations will be applied.
But then, if having other subsystems grabbing for the line is truly a concern,
it should be reserved with gpio_request instead, which carries an implicit
msm_gpiomux_get.
gpiomux and gpiolib
===================
It is expected that msm gpio_chips will call msm_gpiomux_get() and
msm_gpiomux_put() from their request and free hooks, like this fictional
example:
static int request(struct gpio_chip *chip, unsigned offset)
{
return msm_gpiomux_get(chip->base + offset);
}
static void free(struct gpio_chip *chip, unsigned offset)
{
msm_gpiomux_put(chip->base + offset);
}
...somewhere in a gpio_chip declaration...
.request = request,
.free = free,
This provides important functionality:
- It guarantees that a gpio line will have its 'active' config applied
when the line is requested, and will not be suspended while the line
remains requested; and
- It guarantees that gpio-direction settings from gpiolib behave sensibly.
See "About Output-Enable Settings."
This mechanism allows for "auto-request" of gpiomux lines via gpiolib
when it is suitable. Drivers wishing more exact control are, of course,
free to also use msm_gpiomux_set and msm_gpiomux_get.
About Output-Enable Settings
============================
Some msm targets do not have the ability to query the current gpio
configuration setting. This means that changes made to the output-enable
(OE) bit by gpiolib cannot be consistently detected and preserved by gpiomux.
Therefore, when gpiomux applies a configuration setting, any direction
settings which may have been applied by gpiolib are lost and the default
input settings are re-applied.
For this reason, drivers should not assume that gpio direction settings
continue to hold if they free and then re-request a gpio. This seems like
common sense - after all, anybody could have obtained the line in the
meantime - but it needs saying.
This also means that calls to msm_gpiomux_write will reset the OE bit,
which means that if the gpio line is held by a client of gpiolib and
msm_gpiomux_write is called, the direction setting has been lost and
gpiolib's internal state has been broken.
Release gpio lines before reconfiguring them.
arch/arm/mach-msm/Kconfig
+55
View File
@@ -10,6 +10,8 @@ config ARCH_MSM7X00A
select MSM_SMD
select MSM_SMD_PKG3
select CPU_V6
select MSM_PROC_COMM
select HAS_MSM_DEBUG_UART_PHYS
config ARCH_MSM7X30
bool "MSM7x30"
@@ -18,6 +20,9 @@ config ARCH_MSM7X30
select MSM_VIC
select CPU_V7
select MSM_REMOTE_SPINLOCK_DEKKERS
select MSM_GPIOMUX
select MSM_PROC_COMM
select HAS_MSM_DEBUG_UART_PHYS
config ARCH_QSD8X50
bool "QSD8X50"
@@ -26,6 +31,19 @@ config ARCH_QSD8X50
select MSM_VIC
select CPU_V7
select MSM_REMOTE_SPINLOCK_LDREX
select MSM_GPIOMUX
select MSM_PROC_COMM
select HAS_MSM_DEBUG_UART_PHYS
config ARCH_MSM8X60
bool "MSM8X60"
select ARM_GIC
select CPU_V7
select MSM_V2_TLMM
select MSM_GPIOMUX
select MACH_MSM8X60_SURF if (!MACH_MSM8X60_RUMI3 && !MACH_MSM8X60_SIM \
&& !MACH_MSM8X60_FFA)
endchoice
config MSM_SOC_REV_A
@@ -36,6 +54,9 @@ config ARCH_MSM_ARM11
config ARCH_MSM_SCORPION
bool
config HAS_MSM_DEBUG_UART_PHYS
bool
config MSM_VIC
bool
@@ -74,6 +95,30 @@ config MACH_QSD8X50A_ST1_5
help
Support for the Qualcomm ST1.5.
config MACH_MSM8X60_RUMI3
depends on ARCH_MSM8X60
bool "MSM8x60 RUMI3"
help
Support for the Qualcomm MSM8x60 RUMI3 emulator.
config MACH_MSM8X60_SURF
depends on ARCH_MSM8X60
bool "MSM8x60 SURF"
help
Support for the Qualcomm MSM8x60 SURF eval board.
config MACH_MSM8X60_SIM
depends on ARCH_MSM8X60
bool "MSM8x60 Simulator"
help
Support for the Qualcomm MSM8x60 simulator.
config MACH_MSM8X60_FFA
depends on ARCH_MSM8X60
bool "MSM8x60 FFA"
help
Support for the Qualcomm MSM8x60 FFA eval board.
endmenu
config MSM_DEBUG_UART
@@ -82,6 +127,7 @@ config MSM_DEBUG_UART
default 2 if MSM_DEBUG_UART2
default 3 if MSM_DEBUG_UART3
if HAS_MSM_DEBUG_UART_PHYS
choice
prompt "Debug UART"
@@ -99,11 +145,20 @@ choice
config MSM_DEBUG_UART3
bool "UART3"
endchoice
endif
config MSM_SMD_PKG3
bool
config MSM_PROC_COMM
bool
config MSM_SMD
bool
config MSM_GPIOMUX
bool
config MSM_V2_TLMM
bool
endif
arch/arm/mach-msm/Makefile
+16 -5
View File
@@ -1,16 +1,20 @@
obj-y += proc_comm.o
obj-y += io.o idle.o timer.o dma.o
obj-y += vreg.o
obj-y += io.o idle.o timer.o
ifndef CONFIG_ARCH_MSM8X60
obj-y += acpuclock-arm11.o
obj-y += clock.o clock-pcom.o
obj-y += gpio.o
obj-y += dma.o
endif
ifdef CONFIG_MSM_VIC
obj-y += irq-vic.o
else
ifndef CONFIG_ARCH_MSM8X60
obj-y += irq.o
endif
endif
obj-$(CONFIG_ARCH_MSM8X60) += clock-dummy.o iommu.o iommu_dev.o devices-msm8x60-iommu.o
obj-$(CONFIG_MSM_PROC_COMM) += proc_comm.o clock-pcom.o vreg.o
obj-$(CONFIG_MSM_PROC_COMM) += clock.o
obj-$(CONFIG_ARCH_QSD8X50) += sirc.o
obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o
obj-$(CONFIG_MSM_SMD) += last_radio_log.o
@@ -19,4 +23,11 @@ obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o d
obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o devices-msm7x00.o
obj-$(CONFIG_ARCH_MSM7X30) += board-msm7x30.o devices-msm7x30.o
obj-$(CONFIG_ARCH_QSD8X50) += board-qsd8x50.o devices-qsd8x50.o
obj-$(CONFIG_ARCH_MSM8X60) += board-msm8x60.o
obj-$(CONFIG_ARCH_MSM7X30) += gpiomux-7x30.o gpiomux-v1.o gpiomux.o
obj-$(CONFIG_ARCH_QSD8X50) += gpiomux-8x50.o gpiomux-v1.o gpiomux.o
obj-$(CONFIG_ARCH_MSM8X60) += gpiomux-8x60.o gpiomux-v2.o gpiomux.o
ifndef CONFIG_MSM_V2_TLMM
obj-y += gpio.o
endif
arch/arm/mach-msm/board-msm7x30.c
+1 -21
View File
@@ -39,27 +39,11 @@
extern struct sys_timer msm_timer;
#ifdef CONFIG_SERIAL_MSM_CONSOLE
static struct msm_gpio uart2_config_data[] = {
{ GPIO_CFG(49, 2, GPIO_OUTPUT, GPIO_PULL_DOWN, GPIO_2MA), "UART2_RFR"},
{ GPIO_CFG(50, 2, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA), "UART2_CTS"},
{ GPIO_CFG(51, 2, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA), "UART2_Rx"},
{ GPIO_CFG(52, 2, GPIO_OUTPUT, GPIO_PULL_DOWN, GPIO_2MA), "UART2_Tx"},
};
static void msm7x30_init_uart2(void)
{
msm_gpios_request_enable(uart2_config_data,
ARRAY_SIZE(uart2_config_data));
}
#endif
static struct platform_device *devices[] __initdata = {
#if defined(CONFIG_SERIAL_MSM) || defined(CONFIG_MSM_SERIAL_DEBUGGER)
&msm_device_uart2,
#endif
&msm_device_smd,
};
static void __init msm7x30_init_irq(void)
@@ -70,10 +54,6 @@ static void __init msm7x30_init_irq(void)
static void __init msm7x30_init(void)
{
platform_add_devices(devices, ARRAY_SIZE(devices));
#ifdef CONFIG_SERIAL_MSM_CONSOLE
msm7x30_init_uart2();
#endif
}
static void __init msm7x30_map_io(void)
arch/arm/mach-msm/board-msm8x60.c
+100
View File
@@ -0,0 +1,100 @@
/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/hardware/gic.h>
#include <mach/board.h>
#include <mach/msm_iomap.h>
void __iomem *gic_cpu_base_addr;
unsigned long clk_get_max_axi_khz(void)
{
return 0;
}
static void __init msm8x60_map_io(void)
{
msm_map_msm8x60_io();
}
static void __init msm8x60_init_irq(void)
{
unsigned int i;
gic_dist_init(0, MSM_QGIC_DIST_BASE, GIC_PPI_START);
gic_cpu_base_addr = (void *)MSM_QGIC_CPU_BASE;
gic_cpu_init(0, MSM_QGIC_CPU_BASE);
/* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */
writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
/* RUMI does not adhere to GIC spec by enabling STIs by default.
* Enable/clear is supposed to be RO for STIs, but is RW on RUMI.
*/
if (!machine_is_msm8x60_sim())
writel(0x0000FFFF, MSM_QGIC_DIST_BASE + GIC_DIST_ENABLE_SET);
/* FIXME: Not installing AVS_SVICINT and AVS_SVICINTSWDONE yet
* as they are configured as level, which does not play nice with
* handle_percpu_irq.
*/
for (i = GIC_PPI_START; i < GIC_SPI_START; i++) {
if (i != AVS_SVICINT && i != AVS_SVICINTSWDONE)
set_irq_handler(i, handle_percpu_irq);
}
}
static void __init msm8x60_init(void)
{
}
MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
.map_io = msm8x60_map_io,
.init_irq = msm8x60_init_irq,
.init_machine = msm8x60_init,
.timer = &msm_timer,
MACHINE_END
MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
.map_io = msm8x60_map_io,
.init_irq = msm8x60_init_irq,
.init_machine = msm8x60_init,
.timer = &msm_timer,
MACHINE_END
MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
.map_io = msm8x60_map_io,
.init_irq = msm8x60_init_irq,
.init_machine = msm8x60_init,
.timer = &msm_timer,
MACHINE_END
MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
.map_io = msm8x60_map_io,
.init_irq = msm8x60_init_irq,
.init_machine = msm8x60_init,
.timer = &msm_timer,
MACHINE_END
arch/arm/mach-msm/board-qsd8x50.c
+38 -10
View File
@@ -35,21 +35,50 @@
extern struct sys_timer msm_timer;
static struct msm_gpio uart3_config_data[] = {
{ GPIO_CFG(86, 1, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA), "UART2_Rx"},
{ GPIO_CFG(87, 1, GPIO_OUTPUT, GPIO_PULL_DOWN, GPIO_2MA), "UART2_Tx"},
static const resource_size_t qsd8x50_surf_smc91x_base __initdata = 0x70000300;
static const unsigned qsd8x50_surf_smc91x_gpio __initdata = 156;
/* Leave smc91x resources empty here, as we'll fill them in
* at run-time: they vary from board to board, and the true
* configuration won't be known until boot.
*/
static struct resource smc91x_resources[] __initdata = {
[0] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device smc91x_device __initdata = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
};
static int __init msm_init_smc91x(void)
{
if (machine_is_qsd8x50_surf()) {
smc91x_resources[0].start = qsd8x50_surf_smc91x_base;
smc91x_resources[0].end = qsd8x50_surf_smc91x_base + 0xff;
smc91x_resources[1].start =
gpio_to_irq(qsd8x50_surf_smc91x_gpio);
smc91x_resources[1].end =
gpio_to_irq(qsd8x50_surf_smc91x_gpio);
platform_device_register(&smc91x_device);
}
return 0;
}
module_init(msm_init_smc91x);
static struct platform_device *devices[] __initdata = {
&msm_device_uart3,
&msm_device_smd,
};
static void msm8x50_init_uart3(void)
{
msm_gpios_request_enable(uart3_config_data,
ARRAY_SIZE(uart3_config_data));
}
static void __init qsd8x50_map_io(void)
{
msm_map_qsd8x50_io();
@@ -64,7 +93,6 @@ static void __init qsd8x50_init_irq(void)
static void __init qsd8x50_init(void)
{
msm8x50_init_uart3();
platform_add_devices(devices, ARRAY_SIZE(devices));
}
arch/arm/mach-msm/clock-dummy.c
+54
View File
@@ -0,0 +1,54 @@
/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/module.h>
struct clk *clk_get(struct device *dev, const char *id)
{
return ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL(clk_get);
int clk_enable(struct clk *clk)
{
return -ENOENT;
}
EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_get_rate);
int clk_set_rate(struct clk *clk, unsigned long rate)
{
return -ENOENT;
}
EXPORT_SYMBOL(clk_set_rate);
void clk_put(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_put);
arch/arm/mach-msm/devices-msm7x30.c
+5
View File
@@ -51,6 +51,11 @@ struct platform_device msm_device_uart2 = {
.resource = resources_uart2,
};
struct platform_device msm_device_smd = {
.name = "msm_smd",
.id = -1,
};
struct clk msm_clocks_7x30[] = {
CLK_PCOM("adm_clk", ADM_CLK, NULL, 0),
CLK_PCOM("adsp_clk", ADSP_CLK, NULL, 0),
arch/arm/mach-msm/devices-msm8x60-iommu.c
+883
View File
File diff suppressed because it is too large Load Diff
arch/arm/mach-msm/devices-qsd8x50.c
+5
View File
@@ -48,6 +48,11 @@ struct platform_device msm_device_uart3 = {
.resource = resources_uart3,
};
struct platform_device msm_device_smd = {
.name = "msm_smd",
.id = -1,
};
struct clk msm_clocks_8x50[] = {
CLK_PCOM("adm_clk", ADM_CLK, NULL, 0),
CLK_PCOM("ebi1_clk", EBI1_CLK, NULL, CLK_MIN),
arch/arm/mach-msm/gpio.c
+346 -55
View File
@@ -1,7 +1,7 @@
/* linux/arch/arm/mach-msm/gpio.c
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -14,72 +14,363 @@
*
*/
#include <linux/bitops.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <mach/gpio.h>
#include "proc_comm.h"
#include "gpio_hw.h"
#include "gpiomux.h"
int gpio_tlmm_config(unsigned config, unsigned disable)
{
return msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &config, &disable);
}
EXPORT_SYMBOL(gpio_tlmm_config);
#define FIRST_GPIO_IRQ MSM_GPIO_TO_INT(0)
int msm_gpios_enable(const struct msm_gpio *table, int size)
{
int rc;
int i;
const struct msm_gpio *g;
for (i = 0; i < size; i++) {
g = table + i;
rc = gpio_tlmm_config(g->gpio_cfg, GPIO_ENABLE);
if (rc) {
pr_err("gpio_tlmm_config(0x%08x, GPIO_ENABLE)"
" <%s> failed: %d\n",
g->gpio_cfg, g->label ?: "?", rc);
pr_err("pin %d func %d dir %d pull %d drvstr %d\n",
GPIO_PIN(g->gpio_cfg), GPIO_FUNC(g->gpio_cfg),
GPIO_DIR(g->gpio_cfg), GPIO_PULL(g->gpio_cfg),
GPIO_DRVSTR(g->gpio_cfg));
goto err;
}
#define MSM_GPIO_BANK(bank, first, last) \
{ \
.regs = { \
.out = MSM_GPIO_OUT_##bank, \
.in = MSM_GPIO_IN_##bank, \
.int_status = MSM_GPIO_INT_STATUS_##bank, \
.int_clear = MSM_GPIO_INT_CLEAR_##bank, \
.int_en = MSM_GPIO_INT_EN_##bank, \
.int_edge = MSM_GPIO_INT_EDGE_##bank, \
.int_pos = MSM_GPIO_INT_POS_##bank, \
.oe = MSM_GPIO_OE_##bank, \
}, \
.chip = { \
.base = (first), \
.ngpio = (last) - (first) + 1, \
.get = msm_gpio_get, \
.set = msm_gpio_set, \
.direction_input = msm_gpio_direction_input, \
.direction_output = msm_gpio_direction_output, \
.to_irq = msm_gpio_to_irq, \
.request = msm_gpio_request, \
.free = msm_gpio_free, \
} \
}
#define MSM_GPIO_BROKEN_INT_CLEAR 1
struct msm_gpio_regs {
void __iomem *out;
void __iomem *in;
void __iomem *int_status;
void __iomem *int_clear;
void __iomem *int_en;
void __iomem *int_edge;
void __iomem *int_pos;
void __iomem *oe;
};
struct msm_gpio_chip {
spinlock_t lock;
struct gpio_chip chip;
struct msm_gpio_regs regs;
#if MSM_GPIO_BROKEN_INT_CLEAR
unsigned int_status_copy;
#endif
unsigned int both_edge_detect;
unsigned int int_enable[2]; /* 0: awake, 1: sleep */
};
static int msm_gpio_write(struct msm_gpio_chip *msm_chip,
unsigned offset, unsigned on)
{
unsigned mask = BIT(offset);
unsigned val;
val = readl(msm_chip->regs.out);
if (on)
writel(val | mask, msm_chip->regs.out);
else
writel(val & ~mask, msm_chip->regs.out);
return 0;
err:
msm_gpios_disable(table, i);
return rc;
}
EXPORT_SYMBOL(msm_gpios_enable);
void msm_gpios_disable(const struct msm_gpio *table, int size)
static void msm_gpio_update_both_edge_detect(struct msm_gpio_chip *msm_chip)
{
int rc;
int i;
const struct msm_gpio *g;
for (i = size-1; i >= 0; i--) {
g = table + i;
rc = gpio_tlmm_config(g->gpio_cfg, GPIO_DISABLE);
if (rc) {
pr_err("gpio_tlmm_config(0x%08x, GPIO_DISABLE)"
" <%s> failed: %d\n",
g->gpio_cfg, g->label ?: "?", rc);
pr_err("pin %d func %d dir %d pull %d drvstr %d\n",
GPIO_PIN(g->gpio_cfg), GPIO_FUNC(g->gpio_cfg),
GPIO_DIR(g->gpio_cfg), GPIO_PULL(g->gpio_cfg),
GPIO_DRVSTR(g->gpio_cfg));
int loop_limit = 100;
unsigned pol, val, val2, intstat;
do {
val = readl(msm_chip->regs.in);
pol = readl(msm_chip->regs.int_pos);
pol = (pol & ~msm_chip->both_edge_detect) |
(~val & msm_chip->both_edge_detect);
writel(pol, msm_chip->regs.int_pos);
intstat = readl(msm_chip->regs.int_status);
val2 = readl(msm_chip->regs.in);
if (((val ^ val2) & msm_chip->both_edge_detect & ~intstat) == 0)
return;
} while (loop_limit-- > 0);
printk(KERN_ERR "msm_gpio_update_both_edge_detect, "
"failed to reach stable state %x != %x\n", val, val2);
}
static int msm_gpio_clear_detect_status(struct msm_gpio_chip *msm_chip,
unsigned offset)
{
unsigned bit = BIT(offset);
#if MSM_GPIO_BROKEN_INT_CLEAR
/* Save interrupts that already triggered before we loose them. */
/* Any interrupt that triggers between the read of int_status */
/* and the write to int_clear will still be lost though. */
msm_chip->int_status_copy |= readl(msm_chip->regs.int_status);
msm_chip->int_status_copy &= ~bit;
#endif
writel(bit, msm_chip->regs.int_clear);
msm_gpio_update_both_edge_detect(msm_chip);
return 0;
}
static int msm_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
struct msm_gpio_chip *msm_chip;
unsigned long irq_flags;
msm_chip = container_of(chip, struct msm_gpio_chip, chip);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
writel(readl(msm_chip->regs.oe) & ~BIT(offset), msm_chip->regs.oe);
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
return 0;
}
static int
msm_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value)
{
struct msm_gpio_chip *msm_chip;
unsigned long irq_flags;
msm_chip = container_of(chip, struct msm_gpio_chip, chip);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
msm_gpio_write(msm_chip, offset, value);
writel(readl(msm_chip->regs.oe) | BIT(offset), msm_chip->regs.oe);
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
return 0;
}
static int msm_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct msm_gpio_chip *msm_chip;
msm_chip = container_of(chip, struct msm_gpio_chip, chip);
return (readl(msm_chip->regs.in) & (1U << offset)) ? 1 : 0;
}
static void msm_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct msm_gpio_chip *msm_chip;
unsigned long irq_flags;
msm_chip = container_of(chip, struct msm_gpio_chip, chip);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
msm_gpio_write(msm_chip, offset, value);
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
}
static int msm_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
return MSM_GPIO_TO_INT(chip->base + offset);
}
#ifdef CONFIG_MSM_GPIOMUX
static int msm_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return msm_gpiomux_get(chip->base + offset);
}
static void msm_gpio_free(struct gpio_chip *chip, unsigned offset)
{
msm_gpiomux_put(chip->base + offset);
}
#else
#define msm_gpio_request NULL
#define msm_gpio_free NULL
#endif
struct msm_gpio_chip msm_gpio_chips[] = {
#if defined(CONFIG_ARCH_MSM7X00A)
MSM_GPIO_BANK(0, 0, 15),
MSM_GPIO_BANK(1, 16, 42),
MSM_GPIO_BANK(2, 43, 67),
MSM_GPIO_BANK(3, 68, 94),
MSM_GPIO_BANK(4, 95, 106),
MSM_GPIO_BANK(5, 107, 121),
#elif defined(CONFIG_ARCH_MSM7X25) || defined(CONFIG_ARCH_MSM7X27)
MSM_GPIO_BANK(0, 0, 15),
MSM_GPIO_BANK(1, 16, 42),
MSM_GPIO_BANK(2, 43, 67),
MSM_GPIO_BANK(3, 68, 94),
MSM_GPIO_BANK(4, 95, 106),
MSM_GPIO_BANK(5, 107, 132),
#elif defined(CONFIG_ARCH_MSM7X30)
MSM_GPIO_BANK(0, 0, 15),
MSM_GPIO_BANK(1, 16, 43),
MSM_GPIO_BANK(2, 44, 67),
MSM_GPIO_BANK(3, 68, 94),
MSM_GPIO_BANK(4, 95, 106),
MSM_GPIO_BANK(5, 107, 133),
MSM_GPIO_BANK(6, 134, 150),
MSM_GPIO_BANK(7, 151, 181),
#elif defined(CONFIG_ARCH_QSD8X50)
MSM_GPIO_BANK(0, 0, 15),
MSM_GPIO_BANK(1, 16, 42),
MSM_GPIO_BANK(2, 43, 67),
MSM_GPIO_BANK(3, 68, 94),
MSM_GPIO_BANK(4, 95, 103),
MSM_GPIO_BANK(5, 104, 121),
MSM_GPIO_BANK(6, 122, 152),
MSM_GPIO_BANK(7, 153, 164),
#endif
};
static void msm_gpio_irq_ack(unsigned int irq)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
msm_gpio_clear_detect_status(msm_chip,
irq - gpio_to_irq(msm_chip->chip.base));
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
}
static void msm_gpio_irq_mask(unsigned int irq)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
/* level triggered interrupts are also latched */
if (!(readl(msm_chip->regs.int_edge) & BIT(offset)))
msm_gpio_clear_detect_status(msm_chip, offset);
msm_chip->int_enable[0] &= ~BIT(offset);
writel(msm_chip->int_enable[0], msm_chip->regs.int_en);
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
}
static void msm_gpio_irq_unmask(unsigned int irq)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
/* level triggered interrupts are also latched */
if (!(readl(msm_chip->regs.int_edge) & BIT(offset)))
msm_gpio_clear_detect_status(msm_chip, offset);
msm_chip->int_enable[0] |= BIT(offset);
writel(msm_chip->int_enable[0], msm_chip->regs.int_en);
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
}
static int msm_gpio_irq_set_wake(unsigned int irq, unsigned int on)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
if (on)
msm_chip->int_enable[1] |= BIT(offset);
else
msm_chip->int_enable[1] &= ~BIT(offset);
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
return 0;
}
static int msm_gpio_irq_set_type(unsigned int irq, unsigned int flow_type)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
unsigned val, mask = BIT(offset);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
val = readl(msm_chip->regs.int_edge);
if (flow_type & IRQ_TYPE_EDGE_BOTH) {
writel(val | mask, msm_chip->regs.int_edge);
irq_desc[irq].handle_irq = handle_edge_irq;
} else {
writel(val & ~mask, msm_chip->regs.int_edge);
irq_desc[irq].handle_irq = handle_level_irq;
}
if ((flow_type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) {
msm_chip->both_edge_detect |= mask;
msm_gpio_update_both_edge_detect(msm_chip);
} else {
msm_chip->both_edge_detect &= ~mask;
val = readl(msm_chip->regs.int_pos);
if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_HIGH))
writel(val | mask, msm_chip->regs.int_pos);
else
writel(val & ~mask, msm_chip->regs.int_pos);
}
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
return 0;
}
static void msm_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
{
int i, j, mask;
unsigned val;
for (i = 0; i < ARRAY_SIZE(msm_gpio_chips); i++) {
struct msm_gpio_chip *msm_chip = &msm_gpio_chips[i];
val = readl(msm_chip->regs.int_status);
val &= msm_chip->int_enable[0];
while (val) {
mask = val & -val;
j = fls(mask) - 1;
/* printk("%s %08x %08x bit %d gpio %d irq %d\n",
__func__, v, m, j, msm_chip->chip.start + j,
FIRST_GPIO_IRQ + msm_chip->chip.start + j); */
val &= ~mask;
generic_handle_irq(FIRST_GPIO_IRQ +
msm_chip->chip.base + j);
}
}
desc->chip->ack(irq);
}
EXPORT_SYMBOL(msm_gpios_disable);
int msm_gpios_request_enable(const struct msm_gpio *table, int size)
{
int rc = msm_gpios_enable(table, size);
return rc;
}
EXPORT_SYMBOL(msm_gpios_request_enable);
static struct irq_chip msm_gpio_irq_chip = {
.name = "msmgpio",
.ack = msm_gpio_irq_ack,
.mask = msm_gpio_irq_mask,
.unmask = msm_gpio_irq_unmask,
.set_wake = msm_gpio_irq_set_wake,
.set_type = msm_gpio_irq_set_type,
};
void msm_gpios_disable_free(const struct msm_gpio *table, int size)
static int __init msm_init_gpio(void)
{
msm_gpios_disable(table, size);
int i, j = 0;
for (i = FIRST_GPIO_IRQ; i < FIRST_GPIO_IRQ + NR_GPIO_IRQS; i++) {
if (i - FIRST_GPIO_IRQ >=
msm_gpio_chips[j].chip.base +
msm_gpio_chips[j].chip.ngpio)
j++;
set_irq_chip_data(i, &msm_gpio_chips[j]);
set_irq_chip(i, &msm_gpio_irq_chip);
set_irq_handler(i, handle_edge_irq);
set_irq_flags(i, IRQF_VALID);
}
for (i = 0; i < ARRAY_SIZE(msm_gpio_chips); i++) {
spin_lock_init(&msm_gpio_chips[i].lock);
writel(0, msm_gpio_chips[i].regs.int_en);
gpiochip_add(&msm_gpio_chips[i].chip);
}
set_irq_chained_handler(INT_GPIO_GROUP1, msm_gpio_irq_handler);
set_irq_chained_handler(INT_GPIO_GROUP2, msm_gpio_irq_handler);
set_irq_wake(INT_GPIO_GROUP1, 1);
set_irq_wake(INT_GPIO_GROUP2, 2);
return 0;
}
EXPORT_SYMBOL(msm_gpios_disable_free);
postcore_initcall(msm_init_gpio);
arch/arm/mach-msm/gpio_hw.h
+278
View File
@@ -0,0 +1,278 @@
/* arch/arm/mach-msm/gpio_hw.h
*
* Copyright (C) 2007 Google, Inc.
* Author: Brian Swetland <swetland@google.com>
* Copyright (c) 2008-2010, Code Aurora Forum. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#ifndef __ARCH_ARM_MACH_MSM_GPIO_HW_H
#define __ARCH_ARM_MACH_MSM_GPIO_HW_H
#include <mach/msm_iomap.h>
/* see 80-VA736-2 Rev C pp 695-751
**
** These are actually the *shadow* gpio registers, since the
** real ones (which allow full access) are only available to the
** ARM9 side of the world.
**
** Since the _BASE need to be page-aligned when we're mapping them
** to virtual addresses, adjust for the additional offset in these
** macros.
*/
#if defined(CONFIG_ARCH_MSM7X30)
#define MSM_GPIO1_REG(off) (MSM_GPIO1_BASE + (off))
#define MSM_GPIO2_REG(off) (MSM_GPIO2_BASE + 0x400 + (off))
#else
#define MSM_GPIO1_REG(off) (MSM_GPIO1_BASE + 0x800 + (off))
#define MSM_GPIO2_REG(off) (MSM_GPIO2_BASE + 0xC00 + (off))
#endif
#if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X25) ||\
defined(CONFIG_ARCH_MSM7X27)
/* output value */
#define MSM_GPIO_OUT_0 MSM_GPIO1_REG(0x00) /* gpio 15-0 */
#define MSM_GPIO_OUT_1 MSM_GPIO2_REG(0x00) /* gpio 42-16 */
#define MSM_GPIO_OUT_2 MSM_GPIO1_REG(0x04) /* gpio 67-43 */
#define MSM_GPIO_OUT_3 MSM_GPIO1_REG(0x08) /* gpio 94-68 */
#define MSM_GPIO_OUT_4 MSM_GPIO1_REG(0x0C) /* gpio 106-95 */
#define MSM_GPIO_OUT_5 MSM_GPIO1_REG(0x50) /* gpio 107-121 */
/* same pin map as above, output enable */
#define MSM_GPIO_OE_0 MSM_GPIO1_REG(0x10)
#define MSM_GPIO_OE_1 MSM_GPIO2_REG(0x08)
#define MSM_GPIO_OE_2 MSM_GPIO1_REG(0x14)
#define MSM_GPIO_OE_3 MSM_GPIO1_REG(0x18)
#define MSM_GPIO_OE_4 MSM_GPIO1_REG(0x1C)
#define MSM_GPIO_OE_5 MSM_GPIO1_REG(0x54)
/* same pin map as above, input read */
#define MSM_GPIO_IN_0 MSM_GPIO1_REG(0x34)
#define MSM_GPIO_IN_1 MSM_GPIO2_REG(0x20)
#define MSM_GPIO_IN_2 MSM_GPIO1_REG(0x38)
#define MSM_GPIO_IN_3 MSM_GPIO1_REG(0x3C)
#define MSM_GPIO_IN_4 MSM_GPIO1_REG(0x40)
#define MSM_GPIO_IN_5 MSM_GPIO1_REG(0x44)
/* same pin map as above, 1=edge 0=level interrup */
#define MSM_GPIO_INT_EDGE_0 MSM_GPIO1_REG(0x60)
#define MSM_GPIO_INT_EDGE_1 MSM_GPIO2_REG(0x50)
#define MSM_GPIO_INT_EDGE_2 MSM_GPIO1_REG(0x64)
#define MSM_GPIO_INT_EDGE_3 MSM_GPIO1_REG(0x68)
#define MSM_GPIO_INT_EDGE_4 MSM_GPIO1_REG(0x6C)
#define MSM_GPIO_INT_EDGE_5 MSM_GPIO1_REG(0xC0)
/* same pin map as above, 1=positive 0=negative */
#define MSM_GPIO_INT_POS_0 MSM_GPIO1_REG(0x70)
#define MSM_GPIO_INT_POS_1 MSM_GPIO2_REG(0x58)
#define MSM_GPIO_INT_POS_2 MSM_GPIO1_REG(0x74)
#define MSM_GPIO_INT_POS_3 MSM_GPIO1_REG(0x78)
#define MSM_GPIO_INT_POS_4 MSM_GPIO1_REG(0x7C)
#define MSM_GPIO_INT_POS_5 MSM_GPIO1_REG(0xBC)
/* same pin map as above, interrupt enable */
#define MSM_GPIO_INT_EN_0 MSM_GPIO1_REG(0x80)
#define MSM_GPIO_INT_EN_1 MSM_GPIO2_REG(0x60)
#define MSM_GPIO_INT_EN_2 MSM_GPIO1_REG(0x84)
#define MSM_GPIO_INT_EN_3 MSM_GPIO1_REG(0x88)
#define MSM_GPIO_INT_EN_4 MSM_GPIO1_REG(0x8C)
#define MSM_GPIO_INT_EN_5 MSM_GPIO1_REG(0xB8)
/* same pin map as above, write 1 to clear interrupt */
#define MSM_GPIO_INT_CLEAR_0 MSM_GPIO1_REG(0x90)
#define MSM_GPIO_INT_CLEAR_1 MSM_GPIO2_REG(0x68)
#define MSM_GPIO_INT_CLEAR_2 MSM_GPIO1_REG(0x94)
#define MSM_GPIO_INT_CLEAR_3 MSM_GPIO1_REG(0x98)
#define MSM_GPIO_INT_CLEAR_4 MSM_GPIO1_REG(0x9C)
#define MSM_GPIO_INT_CLEAR_5 MSM_GPIO1_REG(0xB4)
/* same pin map as above, 1=interrupt pending */
#define MSM_GPIO_INT_STATUS_0 MSM_GPIO1_REG(0xA0)
#define MSM_GPIO_INT_STATUS_1 MSM_GPIO2_REG(0x70)
#define MSM_GPIO_INT_STATUS_2 MSM_GPIO1_REG(0xA4)
#define MSM_GPIO_INT_STATUS_3 MSM_GPIO1_REG(0xA8)
#define MSM_GPIO_INT_STATUS_4 MSM_GPIO1_REG(0xAC)
#define MSM_GPIO_INT_STATUS_5 MSM_GPIO1_REG(0xB0)
#endif
#if defined(CONFIG_ARCH_QSD8X50)
/* output value */
#define MSM_GPIO_OUT_0 MSM_GPIO1_REG(0x00) /* gpio 15-0 */
#define MSM_GPIO_OUT_1 MSM_GPIO2_REG(0x00) /* gpio 42-16 */
#define MSM_GPIO_OUT_2 MSM_GPIO1_REG(0x04) /* gpio 67-43 */
#define MSM_GPIO_OUT_3 MSM_GPIO1_REG(0x08) /* gpio 94-68 */
#define MSM_GPIO_OUT_4 MSM_GPIO1_REG(0x0C) /* gpio 103-95 */
#define MSM_GPIO_OUT_5 MSM_GPIO1_REG(0x10) /* gpio 121-104 */
#define MSM_GPIO_OUT_6 MSM_GPIO1_REG(0x14) /* gpio 152-122 */
#define MSM_GPIO_OUT_7 MSM_GPIO1_REG(0x18) /* gpio 164-153 */
/* same pin map as above, output enable */
#define MSM_GPIO_OE_0 MSM_GPIO1_REG(0x20)
#define MSM_GPIO_OE_1 MSM_GPIO2_REG(0x08)
#define MSM_GPIO_OE_2 MSM_GPIO1_REG(0x24)
#define MSM_GPIO_OE_3 MSM_GPIO1_REG(0x28)
#define MSM_GPIO_OE_4 MSM_GPIO1_REG(0x2C)
#define MSM_GPIO_OE_5 MSM_GPIO1_REG(0x30)
#define MSM_GPIO_OE_6 MSM_GPIO1_REG(0x34)
#define MSM_GPIO_OE_7 MSM_GPIO1_REG(0x38)
/* same pin map as above, input read */
#define MSM_GPIO_IN_0 MSM_GPIO1_REG(0x50)
#define MSM_GPIO_IN_1 MSM_GPIO2_REG(0x20)
#define MSM_GPIO_IN_2 MSM_GPIO1_REG(0x54)
#define MSM_GPIO_IN_3 MSM_GPIO1_REG(0x58)
#define MSM_GPIO_IN_4 MSM_GPIO1_REG(0x5C)
#define MSM_GPIO_IN_5 MSM_GPIO1_REG(0x60)
#define MSM_GPIO_IN_6 MSM_GPIO1_REG(0x64)
#define MSM_GPIO_IN_7 MSM_GPIO1_REG(0x68)
/* same pin map as above, 1=edge 0=level interrup */
#define MSM_GPIO_INT_EDGE_0 MSM_GPIO1_REG(0x70)
#define MSM_GPIO_INT_EDGE_1 MSM_GPIO2_REG(0x50)
#define MSM_GPIO_INT_EDGE_2 MSM_GPIO1_REG(0x74)
#define MSM_GPIO_INT_EDGE_3 MSM_GPIO1_REG(0x78)
#define MSM_GPIO_INT_EDGE_4 MSM_GPIO1_REG(0x7C)
#define MSM_GPIO_INT_EDGE_5 MSM_GPIO1_REG(0x80)
#define MSM_GPIO_INT_EDGE_6 MSM_GPIO1_REG(0x84)
#define MSM_GPIO_INT_EDGE_7 MSM_GPIO1_REG(0x88)
/* same pin map as above, 1=positive 0=negative */
#define MSM_GPIO_INT_POS_0 MSM_GPIO1_REG(0x90)
#define MSM_GPIO_INT_POS_1 MSM_GPIO2_REG(0x58)
#define MSM_GPIO_INT_POS_2 MSM_GPIO1_REG(0x94)
#define MSM_GPIO_INT_POS_3 MSM_GPIO1_REG(0x98)
#define MSM_GPIO_INT_POS_4 MSM_GPIO1_REG(0x9C)
#define MSM_GPIO_INT_POS_5 MSM_GPIO1_REG(0xA0)
#define MSM_GPIO_INT_POS_6 MSM_GPIO1_REG(0xA4)
#define MSM_GPIO_INT_POS_7 MSM_GPIO1_REG(0xA8)
/* same pin map as above, interrupt enable */
#define MSM_GPIO_INT_EN_0 MSM_GPIO1_REG(0xB0)
#define MSM_GPIO_INT_EN_1 MSM_GPIO2_REG(0x60)
#define MSM_GPIO_INT_EN_2 MSM_GPIO1_REG(0xB4)
#define MSM_GPIO_INT_EN_3 MSM_GPIO1_REG(0xB8)
#define MSM_GPIO_INT_EN_4 MSM_GPIO1_REG(0xBC)
#define MSM_GPIO_INT_EN_5 MSM_GPIO1_REG(0xC0)
#define MSM_GPIO_INT_EN_6 MSM_GPIO1_REG(0xC4)
#define MSM_GPIO_INT_EN_7 MSM_GPIO1_REG(0xC8)
/* same pin map as above, write 1 to clear interrupt */
#define MSM_GPIO_INT_CLEAR_0 MSM_GPIO1_REG(0xD0)
#define MSM_GPIO_INT_CLEAR_1 MSM_GPIO2_REG(0x68)
#define MSM_GPIO_INT_CLEAR_2 MSM_GPIO1_REG(0xD4)
#define MSM_GPIO_INT_CLEAR_3 MSM_GPIO1_REG(0xD8)
#define MSM_GPIO_INT_CLEAR_4 MSM_GPIO1_REG(0xDC)
#define MSM_GPIO_INT_CLEAR_5 MSM_GPIO1_REG(0xE0)
#define MSM_GPIO_INT_CLEAR_6 MSM_GPIO1_REG(0xE4)
#define MSM_GPIO_INT_CLEAR_7 MSM_GPIO1_REG(0xE8)
/* same pin map as above, 1=interrupt pending */
#define MSM_GPIO_INT_STATUS_0 MSM_GPIO1_REG(0xF0)
#define MSM_GPIO_INT_STATUS_1 MSM_GPIO2_REG(0x70)
#define MSM_GPIO_INT_STATUS_2 MSM_GPIO1_REG(0xF4)
#define MSM_GPIO_INT_STATUS_3 MSM_GPIO1_REG(0xF8)
#define MSM_GPIO_INT_STATUS_4 MSM_GPIO1_REG(0xFC)
#define MSM_GPIO_INT_STATUS_5 MSM_GPIO1_REG(0x100)
#define MSM_GPIO_INT_STATUS_6 MSM_GPIO1_REG(0x104)
#define MSM_GPIO_INT_STATUS_7 MSM_GPIO1_REG(0x108)
#endif
#if defined(CONFIG_ARCH_MSM7X30)
/* output value */
#define MSM_GPIO_OUT_0 MSM_GPIO1_REG(0x00) /* gpio 15-0 */
#define MSM_GPIO_OUT_1 MSM_GPIO2_REG(0x00) /* gpio 43-16 */
#define MSM_GPIO_OUT_2 MSM_GPIO1_REG(0x04) /* gpio 67-44 */
#define MSM_GPIO_OUT_3 MSM_GPIO1_REG(0x08) /* gpio 94-68 */
#define MSM_GPIO_OUT_4 MSM_GPIO1_REG(0x0C) /* gpio 106-95 */
#define MSM_GPIO_OUT_5 MSM_GPIO1_REG(0x50) /* gpio 133-107 */
#define MSM_GPIO_OUT_6 MSM_GPIO1_REG(0xC4) /* gpio 150-134 */
#define MSM_GPIO_OUT_7 MSM_GPIO1_REG(0x214) /* gpio 181-151 */
/* same pin map as above, output enable */
#define MSM_GPIO_OE_0 MSM_GPIO1_REG(0x10)
#define MSM_GPIO_OE_1 MSM_GPIO2_REG(0x08)
#define MSM_GPIO_OE_2 MSM_GPIO1_REG(0x14)
#define MSM_GPIO_OE_3 MSM_GPIO1_REG(0x18)
#define MSM_GPIO_OE_4 MSM_GPIO1_REG(0x1C)
#define MSM_GPIO_OE_5 MSM_GPIO1_REG(0x54)
#define MSM_GPIO_OE_6 MSM_GPIO1_REG(0xC8)
#define MSM_GPIO_OE_7 MSM_GPIO1_REG(0x218)
/* same pin map as above, input read */
#define MSM_GPIO_IN_0 MSM_GPIO1_REG(0x34)
#define MSM_GPIO_IN_1 MSM_GPIO2_REG(0x20)
#define MSM_GPIO_IN_2 MSM_GPIO1_REG(0x38)
#define MSM_GPIO_IN_3 MSM_GPIO1_REG(0x3C)
#define MSM_GPIO_IN_4 MSM_GPIO1_REG(0x40)
#define MSM_GPIO_IN_5 MSM_GPIO1_REG(0x44)
#define MSM_GPIO_IN_6 MSM_GPIO1_REG(0xCC)
#define MSM_GPIO_IN_7 MSM_GPIO1_REG(0x21C)
/* same pin map as above, 1=edge 0=level interrup */
#define MSM_GPIO_INT_EDGE_0 MSM_GPIO1_REG(0x60)
#define MSM_GPIO_INT_EDGE_1 MSM_GPIO2_REG(0x50)
#define MSM_GPIO_INT_EDGE_2 MSM_GPIO1_REG(0x64)
#define MSM_GPIO_INT_EDGE_3 MSM_GPIO1_REG(0x68)
#define MSM_GPIO_INT_EDGE_4 MSM_GPIO1_REG(0x6C)
#define MSM_GPIO_INT_EDGE_5 MSM_GPIO1_REG(0xC0)
#define MSM_GPIO_INT_EDGE_6 MSM_GPIO1_REG(0xD0)
#define MSM_GPIO_INT_EDGE_7 MSM_GPIO1_REG(0x240)
/* same pin map as above, 1=positive 0=negative */
#define MSM_GPIO_INT_POS_0 MSM_GPIO1_REG(0x70)
#define MSM_GPIO_INT_POS_1 MSM_GPIO2_REG(0x58)
#define MSM_GPIO_INT_POS_2 MSM_GPIO1_REG(0x74)
#define MSM_GPIO_INT_POS_3 MSM_GPIO1_REG(0x78)
#define MSM_GPIO_INT_POS_4 MSM_GPIO1_REG(0x7C)
#define MSM_GPIO_INT_POS_5 MSM_GPIO1_REG(0xBC)
#define MSM_GPIO_INT_POS_6 MSM_GPIO1_REG(0xD4)
#define MSM_GPIO_INT_POS_7 MSM_GPIO1_REG(0x228)
/* same pin map as above, interrupt enable */
#define MSM_GPIO_INT_EN_0 MSM_GPIO1_REG(0x80)
#define MSM_GPIO_INT_EN_1 MSM_GPIO2_REG(0x60)
#define MSM_GPIO_INT_EN_2 MSM_GPIO1_REG(0x84)
#define MSM_GPIO_INT_EN_3 MSM_GPIO1_REG(0x88)
#define MSM_GPIO_INT_EN_4 MSM_GPIO1_REG(0x8C)
#define MSM_GPIO_INT_EN_5 MSM_GPIO1_REG(0xB8)
#define MSM_GPIO_INT_EN_6 MSM_GPIO1_REG(0xD8)
#define MSM_GPIO_INT_EN_7 MSM_GPIO1_REG(0x22C)
/* same pin map as above, write 1 to clear interrupt */
#define MSM_GPIO_INT_CLEAR_0 MSM_GPIO1_REG(0x90)
#define MSM_GPIO_INT_CLEAR_1 MSM_GPIO2_REG(0x68)
#define MSM_GPIO_INT_CLEAR_2 MSM_GPIO1_REG(0x94)
#define MSM_GPIO_INT_CLEAR_3 MSM_GPIO1_REG(0x98)
#define MSM_GPIO_INT_CLEAR_4 MSM_GPIO1_REG(0x9C)
#define MSM_GPIO_INT_CLEAR_5 MSM_GPIO1_REG(0xB4)
#define MSM_GPIO_INT_CLEAR_6 MSM_GPIO1_REG(0xDC)
#define MSM_GPIO_INT_CLEAR_7 MSM_GPIO1_REG(0x230)
/* same pin map as above, 1=interrupt pending */
#define MSM_GPIO_INT_STATUS_0 MSM_GPIO1_REG(0xA0)
#define MSM_GPIO_INT_STATUS_1 MSM_GPIO2_REG(0x70)
#define MSM_GPIO_INT_STATUS_2 MSM_GPIO1_REG(0xA4)
#define MSM_GPIO_INT_STATUS_3 MSM_GPIO1_REG(0xA8)
#define MSM_GPIO_INT_STATUS_4 MSM_GPIO1_REG(0xAC)
#define MSM_GPIO_INT_STATUS_5 MSM_GPIO1_REG(0xB0)
#define MSM_GPIO_INT_STATUS_6 MSM_GPIO1_REG(0xE0)
#define MSM_GPIO_INT_STATUS_7 MSM_GPIO1_REG(0x234)
#endif
#endif
arch/arm/mach-msm/gpiomux-7x30.c
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "gpiomux.h"
struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
#ifdef CONFIG_SERIAL_MSM_CONSOLE
[49] = { /* UART2 RFR */
.suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
GPIOMUX_FUNC_2 | GPIOMUX_VALID,
},
[50] = { /* UART2 CTS */
.suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
GPIOMUX_FUNC_2 | GPIOMUX_VALID,
},
[51] = { /* UART2 RX */
.suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
GPIOMUX_FUNC_2 | GPIOMUX_VALID,
},
[52] = { /* UART2 TX */
.suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
GPIOMUX_FUNC_2 | GPIOMUX_VALID,
},
#endif
};
arch/arm/mach-msm/gpiomux-8x50.c
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "gpiomux.h"
struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
[86] = { /* UART3 RX */
.suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
GPIOMUX_FUNC_1 | GPIOMUX_VALID,
},
[87] = { /* UART3 TX */
.suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
GPIOMUX_FUNC_1 | GPIOMUX_VALID,
},
};
arch/arm/mach-msm/gpiomux-8x60.c
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "gpiomux.h"
struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {};
arch/arm/mach-msm/gpiomux-v1.c
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <linux/kernel.h>
#include "gpiomux.h"
#include "proc_comm.h"
void __msm_gpiomux_write(unsigned gpio, gpiomux_config_t val)
{
unsigned tlmm_config = (val & ~GPIOMUX_CTL_MASK) |
((gpio & 0x3ff) << 4);
unsigned tlmm_disable = 0;
int rc;
rc = msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX,
&tlmm_config, &tlmm_disable);
if (rc)
pr_err("%s: unexpected proc_comm failure %d: %08x %08x\n",
__func__, rc, tlmm_config, tlmm_disable);
}
arch/arm/mach-msm/gpiomux-v1.h
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __ARCH_ARM_MACH_MSM_GPIOMUX_V1_H
#define __ARCH_ARM_MACH_MSM_GPIOMUX_V1_H
#if defined(CONFIG_ARCH_MSM7X30)
#define GPIOMUX_NGPIOS 182
#elif defined(CONFIG_ARCH_QSD8X50)
#define GPIOMUX_NGPIOS 165
#else
#define GPIOMUX_NGPIOS 133
#endif
typedef u32 gpiomux_config_t;
enum {
GPIOMUX_DRV_2MA = 0UL << 17,
GPIOMUX_DRV_4MA = 1UL << 17,
GPIOMUX_DRV_6MA = 2UL << 17,
GPIOMUX_DRV_8MA = 3UL << 17,
GPIOMUX_DRV_10MA = 4UL << 17,
GPIOMUX_DRV_12MA = 5UL << 17,
GPIOMUX_DRV_14MA = 6UL << 17,
GPIOMUX_DRV_16MA = 7UL << 17,
};
enum {
GPIOMUX_FUNC_GPIO = 0UL,
GPIOMUX_FUNC_1 = 1UL,
GPIOMUX_FUNC_2 = 2UL,
GPIOMUX_FUNC_3 = 3UL,
GPIOMUX_FUNC_4 = 4UL,
GPIOMUX_FUNC_5 = 5UL,
GPIOMUX_FUNC_6 = 6UL,
GPIOMUX_FUNC_7 = 7UL,
GPIOMUX_FUNC_8 = 8UL,
GPIOMUX_FUNC_9 = 9UL,
GPIOMUX_FUNC_A = 10UL,
GPIOMUX_FUNC_B = 11UL,
GPIOMUX_FUNC_C = 12UL,
GPIOMUX_FUNC_D = 13UL,
GPIOMUX_FUNC_E = 14UL,
GPIOMUX_FUNC_F = 15UL,
};
enum {
GPIOMUX_PULL_NONE = 0UL << 15,
GPIOMUX_PULL_DOWN = 1UL << 15,
GPIOMUX_PULL_KEEPER = 2UL << 15,
GPIOMUX_PULL_UP = 3UL << 15,
};
#endif
arch/arm/mach-msm/gpiomux-v2.c
+25
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <linux/io.h>
#include <mach/msm_iomap.h>
#include "gpiomux.h"
void __msm_gpiomux_write(unsigned gpio, gpiomux_config_t val)
{
writel(val & ~GPIOMUX_CTL_MASK,
MSM_TLMM_BASE + 0x1000 + (0x10 * gpio));
}
arch/arm/mach-msm/gpiomux-v2.h
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __ARCH_ARM_MACH_MSM_GPIOMUX_V2_H
#define __ARCH_ARM_MACH_MSM_GPIOMUX_V2_H
#define GPIOMUX_NGPIOS 173
typedef u16 gpiomux_config_t;
enum {
GPIOMUX_DRV_2MA = 0UL << 6,
GPIOMUX_DRV_4MA = 1UL << 6,
GPIOMUX_DRV_6MA = 2UL << 6,
GPIOMUX_DRV_8MA = 3UL << 6,
GPIOMUX_DRV_10MA = 4UL << 6,
GPIOMUX_DRV_12MA = 5UL << 6,
GPIOMUX_DRV_14MA = 6UL << 6,
GPIOMUX_DRV_16MA = 7UL << 6,
};
enum {
GPIOMUX_FUNC_GPIO = 0UL << 2,
GPIOMUX_FUNC_1 = 1UL << 2,
GPIOMUX_FUNC_2 = 2UL << 2,
GPIOMUX_FUNC_3 = 3UL << 2,
GPIOMUX_FUNC_4 = 4UL << 2,
GPIOMUX_FUNC_5 = 5UL << 2,
GPIOMUX_FUNC_6 = 6UL << 2,
GPIOMUX_FUNC_7 = 7UL << 2,
GPIOMUX_FUNC_8 = 8UL << 2,
GPIOMUX_FUNC_9 = 9UL << 2,
GPIOMUX_FUNC_A = 10UL << 2,
GPIOMUX_FUNC_B = 11UL << 2,
GPIOMUX_FUNC_C = 12UL << 2,
GPIOMUX_FUNC_D = 13UL << 2,
GPIOMUX_FUNC_E = 14UL << 2,
GPIOMUX_FUNC_F = 15UL << 2,
};
enum {
GPIOMUX_PULL_NONE = 0UL,
GPIOMUX_PULL_DOWN = 1UL,
GPIOMUX_PULL_KEEPER = 2UL,
GPIOMUX_PULL_UP = 3UL,
};
#endif

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