gpio_msm: Move Qualcomm v6 MSM driver into drivers

Migrate the driver for the v6-based MSM chips into drivers/gpio.  The
driver is unchanged, only moved.

Change-Id: I03ba597b95b4d62b42da112a8efac88d67aa40f9
Signed-off-by: David Brown <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Acked-by: Nicolas Pitre <[email protected]>
This commit is contained in:
David Brown 2011-05-16 13:57:39 -07:00
commit 74d10d7461
5 changed files with 14 additions and 5 deletions

View file

@ -90,6 +90,14 @@ config GPIO_EXYNOS4
def_bool y
depends on CPU_EXYNOS4210
config GPIO_MSM_V1
tristate "Qualcomm MSM GPIO v1"
depends on GPIOLIB && ARCH_MSM
help
Say yes here to support the GPIO interface on ARM v6 based
Qualcomm MSM chips. Most of the pins on the MSM can be
selected for GPIO, and are controlled by this driver.
config GPIO_PLAT_SAMSUNG
def_bool y
depends on SAMSUNG_GPIOLIB_4BIT

View file

@ -19,6 +19,7 @@ obj-$(CONFIG_GPIO_MAX7301) += max7301.o
obj-$(CONFIG_GPIO_MAX732X) += max732x.o
obj-$(CONFIG_GPIO_MC33880) += mc33880.o
obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o
obj-$(CONFIG_GPIO_MSM_V1) += gpio-msm-v1.o
obj-$(CONFIG_GPIO_74X164) += 74x164.o
obj-$(CONFIG_ARCH_OMAP) += gpio-omap.o
obj-$(CONFIG_GPIO_PCA953X) += pca953x.o

636
drivers/gpio/gpio-msm-v1.c Normal file
View file

@ -0,0 +1,636 @@
/*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2009-2011, 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.
*
*/
#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/cpu.h>
#include <mach/msm_gpiomux.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.
*/
#define MSM_GPIO1_REG(off) (MSM_GPIO1_BASE + (off))
#define MSM_GPIO2_REG(off) (MSM_GPIO2_BASE + 0x400 + (off))
#define MSM_GPIO1_SHADOW_REG(off) (MSM_GPIO1_BASE + 0x800 + (off))
#define MSM_GPIO2_SHADOW_REG(off) (MSM_GPIO2_BASE + 0xC00 + (off))
/*
* MSM7X00 registers
*/
/* output value */
#define MSM7X00_GPIO_OUT_0 MSM_GPIO1_SHADOW_REG(0x00) /* gpio 15-0 */
#define MSM7X00_GPIO_OUT_1 MSM_GPIO2_SHADOW_REG(0x00) /* gpio 42-16 */
#define MSM7X00_GPIO_OUT_2 MSM_GPIO1_SHADOW_REG(0x04) /* gpio 67-43 */
#define MSM7X00_GPIO_OUT_3 MSM_GPIO1_SHADOW_REG(0x08) /* gpio 94-68 */
#define MSM7X00_GPIO_OUT_4 MSM_GPIO1_SHADOW_REG(0x0C) /* gpio 106-95 */
#define MSM7X00_GPIO_OUT_5 MSM_GPIO1_SHADOW_REG(0x50) /* gpio 107-121 */
/* same pin map as above, output enable */
#define MSM7X00_GPIO_OE_0 MSM_GPIO1_SHADOW_REG(0x10)
#define MSM7X00_GPIO_OE_1 MSM_GPIO2_SHADOW_REG(0x08)
#define MSM7X00_GPIO_OE_2 MSM_GPIO1_SHADOW_REG(0x14)
#define MSM7X00_GPIO_OE_3 MSM_GPIO1_SHADOW_REG(0x18)
#define MSM7X00_GPIO_OE_4 MSM_GPIO1_SHADOW_REG(0x1C)
#define MSM7X00_GPIO_OE_5 MSM_GPIO1_SHADOW_REG(0x54)
/* same pin map as above, input read */
#define MSM7X00_GPIO_IN_0 MSM_GPIO1_SHADOW_REG(0x34)
#define MSM7X00_GPIO_IN_1 MSM_GPIO2_SHADOW_REG(0x20)
#define MSM7X00_GPIO_IN_2 MSM_GPIO1_SHADOW_REG(0x38)
#define MSM7X00_GPIO_IN_3 MSM_GPIO1_SHADOW_REG(0x3C)
#define MSM7X00_GPIO_IN_4 MSM_GPIO1_SHADOW_REG(0x40)
#define MSM7X00_GPIO_IN_5 MSM_GPIO1_SHADOW_REG(0x44)
/* same pin map as above, 1=edge 0=level interrup */
#define MSM7X00_GPIO_INT_EDGE_0 MSM_GPIO1_SHADOW_REG(0x60)
#define MSM7X00_GPIO_INT_EDGE_1 MSM_GPIO2_SHADOW_REG(0x50)
#define MSM7X00_GPIO_INT_EDGE_2 MSM_GPIO1_SHADOW_REG(0x64)
#define MSM7X00_GPIO_INT_EDGE_3 MSM_GPIO1_SHADOW_REG(0x68)
#define MSM7X00_GPIO_INT_EDGE_4 MSM_GPIO1_SHADOW_REG(0x6C)
#define MSM7X00_GPIO_INT_EDGE_5 MSM_GPIO1_SHADOW_REG(0xC0)
/* same pin map as above, 1=positive 0=negative */
#define MSM7X00_GPIO_INT_POS_0 MSM_GPIO1_SHADOW_REG(0x70)
#define MSM7X00_GPIO_INT_POS_1 MSM_GPIO2_SHADOW_REG(0x58)
#define MSM7X00_GPIO_INT_POS_2 MSM_GPIO1_SHADOW_REG(0x74)
#define MSM7X00_GPIO_INT_POS_3 MSM_GPIO1_SHADOW_REG(0x78)
#define MSM7X00_GPIO_INT_POS_4 MSM_GPIO1_SHADOW_REG(0x7C)
#define MSM7X00_GPIO_INT_POS_5 MSM_GPIO1_SHADOW_REG(0xBC)
/* same pin map as above, interrupt enable */
#define MSM7X00_GPIO_INT_EN_0 MSM_GPIO1_SHADOW_REG(0x80)
#define MSM7X00_GPIO_INT_EN_1 MSM_GPIO2_SHADOW_REG(0x60)
#define MSM7X00_GPIO_INT_EN_2 MSM_GPIO1_SHADOW_REG(0x84)
#define MSM7X00_GPIO_INT_EN_3 MSM_GPIO1_SHADOW_REG(0x88)
#define MSM7X00_GPIO_INT_EN_4 MSM_GPIO1_SHADOW_REG(0x8C)
#define MSM7X00_GPIO_INT_EN_5 MSM_GPIO1_SHADOW_REG(0xB8)
/* same pin map as above, write 1 to clear interrupt */
#define MSM7X00_GPIO_INT_CLEAR_0 MSM_GPIO1_SHADOW_REG(0x90)
#define MSM7X00_GPIO_INT_CLEAR_1 MSM_GPIO2_SHADOW_REG(0x68)
#define MSM7X00_GPIO_INT_CLEAR_2 MSM_GPIO1_SHADOW_REG(0x94)
#define MSM7X00_GPIO_INT_CLEAR_3 MSM_GPIO1_SHADOW_REG(0x98)
#define MSM7X00_GPIO_INT_CLEAR_4 MSM_GPIO1_SHADOW_REG(0x9C)
#define MSM7X00_GPIO_INT_CLEAR_5 MSM_GPIO1_SHADOW_REG(0xB4)
/* same pin map as above, 1=interrupt pending */
#define MSM7X00_GPIO_INT_STATUS_0 MSM_GPIO1_SHADOW_REG(0xA0)
#define MSM7X00_GPIO_INT_STATUS_1 MSM_GPIO2_SHADOW_REG(0x70)
#define MSM7X00_GPIO_INT_STATUS_2 MSM_GPIO1_SHADOW_REG(0xA4)
#define MSM7X00_GPIO_INT_STATUS_3 MSM_GPIO1_SHADOW_REG(0xA8)
#define MSM7X00_GPIO_INT_STATUS_4 MSM_GPIO1_SHADOW_REG(0xAC)
#define MSM7X00_GPIO_INT_STATUS_5 MSM_GPIO1_SHADOW_REG(0xB0)
/*
* QSD8X50 registers
*/
/* output value */
#define QSD8X50_GPIO_OUT_0 MSM_GPIO1_SHADOW_REG(0x00) /* gpio 15-0 */
#define QSD8X50_GPIO_OUT_1 MSM_GPIO2_SHADOW_REG(0x00) /* gpio 42-16 */
#define QSD8X50_GPIO_OUT_2 MSM_GPIO1_SHADOW_REG(0x04) /* gpio 67-43 */
#define QSD8X50_GPIO_OUT_3 MSM_GPIO1_SHADOW_REG(0x08) /* gpio 94-68 */
#define QSD8X50_GPIO_OUT_4 MSM_GPIO1_SHADOW_REG(0x0C) /* gpio 103-95 */
#define QSD8X50_GPIO_OUT_5 MSM_GPIO1_SHADOW_REG(0x10) /* gpio 121-104 */
#define QSD8X50_GPIO_OUT_6 MSM_GPIO1_SHADOW_REG(0x14) /* gpio 152-122 */
#define QSD8X50_GPIO_OUT_7 MSM_GPIO1_SHADOW_REG(0x18) /* gpio 164-153 */
/* same pin map as above, output enable */
#define QSD8X50_GPIO_OE_0 MSM_GPIO1_SHADOW_REG(0x20)
#define QSD8X50_GPIO_OE_1 MSM_GPIO2_SHADOW_REG(0x08)
#define QSD8X50_GPIO_OE_2 MSM_GPIO1_SHADOW_REG(0x24)
#define QSD8X50_GPIO_OE_3 MSM_GPIO1_SHADOW_REG(0x28)
#define QSD8X50_GPIO_OE_4 MSM_GPIO1_SHADOW_REG(0x2C)
#define QSD8X50_GPIO_OE_5 MSM_GPIO1_SHADOW_REG(0x30)
#define QSD8X50_GPIO_OE_6 MSM_GPIO1_SHADOW_REG(0x34)
#define QSD8X50_GPIO_OE_7 MSM_GPIO1_SHADOW_REG(0x38)
/* same pin map as above, input read */
#define QSD8X50_GPIO_IN_0 MSM_GPIO1_SHADOW_REG(0x50)
#define QSD8X50_GPIO_IN_1 MSM_GPIO2_SHADOW_REG(0x20)
#define QSD8X50_GPIO_IN_2 MSM_GPIO1_SHADOW_REG(0x54)
#define QSD8X50_GPIO_IN_3 MSM_GPIO1_SHADOW_REG(0x58)
#define QSD8X50_GPIO_IN_4 MSM_GPIO1_SHADOW_REG(0x5C)
#define QSD8X50_GPIO_IN_5 MSM_GPIO1_SHADOW_REG(0x60)
#define QSD8X50_GPIO_IN_6 MSM_GPIO1_SHADOW_REG(0x64)
#define QSD8X50_GPIO_IN_7 MSM_GPIO1_SHADOW_REG(0x68)
/* same pin map as above, 1=edge 0=level interrup */
#define QSD8X50_GPIO_INT_EDGE_0 MSM_GPIO1_SHADOW_REG(0x70)
#define QSD8X50_GPIO_INT_EDGE_1 MSM_GPIO2_SHADOW_REG(0x50)
#define QSD8X50_GPIO_INT_EDGE_2 MSM_GPIO1_SHADOW_REG(0x74)
#define QSD8X50_GPIO_INT_EDGE_3 MSM_GPIO1_SHADOW_REG(0x78)
#define QSD8X50_GPIO_INT_EDGE_4 MSM_GPIO1_SHADOW_REG(0x7C)
#define QSD8X50_GPIO_INT_EDGE_5 MSM_GPIO1_SHADOW_REG(0x80)
#define QSD8X50_GPIO_INT_EDGE_6 MSM_GPIO1_SHADOW_REG(0x84)
#define QSD8X50_GPIO_INT_EDGE_7 MSM_GPIO1_SHADOW_REG(0x88)
/* same pin map as above, 1=positive 0=negative */
#define QSD8X50_GPIO_INT_POS_0 MSM_GPIO1_SHADOW_REG(0x90)
#define QSD8X50_GPIO_INT_POS_1 MSM_GPIO2_SHADOW_REG(0x58)
#define QSD8X50_GPIO_INT_POS_2 MSM_GPIO1_SHADOW_REG(0x94)
#define QSD8X50_GPIO_INT_POS_3 MSM_GPIO1_SHADOW_REG(0x98)
#define QSD8X50_GPIO_INT_POS_4 MSM_GPIO1_SHADOW_REG(0x9C)
#define QSD8X50_GPIO_INT_POS_5 MSM_GPIO1_SHADOW_REG(0xA0)
#define QSD8X50_GPIO_INT_POS_6 MSM_GPIO1_SHADOW_REG(0xA4)
#define QSD8X50_GPIO_INT_POS_7 MSM_GPIO1_SHADOW_REG(0xA8)
/* same pin map as above, interrupt enable */
#define QSD8X50_GPIO_INT_EN_0 MSM_GPIO1_SHADOW_REG(0xB0)
#define QSD8X50_GPIO_INT_EN_1 MSM_GPIO2_SHADOW_REG(0x60)
#define QSD8X50_GPIO_INT_EN_2 MSM_GPIO1_SHADOW_REG(0xB4)
#define QSD8X50_GPIO_INT_EN_3 MSM_GPIO1_SHADOW_REG(0xB8)
#define QSD8X50_GPIO_INT_EN_4 MSM_GPIO1_SHADOW_REG(0xBC)
#define QSD8X50_GPIO_INT_EN_5 MSM_GPIO1_SHADOW_REG(0xC0)
#define QSD8X50_GPIO_INT_EN_6 MSM_GPIO1_SHADOW_REG(0xC4)
#define QSD8X50_GPIO_INT_EN_7 MSM_GPIO1_SHADOW_REG(0xC8)
/* same pin map as above, write 1 to clear interrupt */
#define QSD8X50_GPIO_INT_CLEAR_0 MSM_GPIO1_SHADOW_REG(0xD0)
#define QSD8X50_GPIO_INT_CLEAR_1 MSM_GPIO2_SHADOW_REG(0x68)
#define QSD8X50_GPIO_INT_CLEAR_2 MSM_GPIO1_SHADOW_REG(0xD4)
#define QSD8X50_GPIO_INT_CLEAR_3 MSM_GPIO1_SHADOW_REG(0xD8)
#define QSD8X50_GPIO_INT_CLEAR_4 MSM_GPIO1_SHADOW_REG(0xDC)
#define QSD8X50_GPIO_INT_CLEAR_5 MSM_GPIO1_SHADOW_REG(0xE0)
#define QSD8X50_GPIO_INT_CLEAR_6 MSM_GPIO1_SHADOW_REG(0xE4)
#define QSD8X50_GPIO_INT_CLEAR_7 MSM_GPIO1_SHADOW_REG(0xE8)
/* same pin map as above, 1=interrupt pending */
#define QSD8X50_GPIO_INT_STATUS_0 MSM_GPIO1_SHADOW_REG(0xF0)
#define QSD8X50_GPIO_INT_STATUS_1 MSM_GPIO2_SHADOW_REG(0x70)
#define QSD8X50_GPIO_INT_STATUS_2 MSM_GPIO1_SHADOW_REG(0xF4)
#define QSD8X50_GPIO_INT_STATUS_3 MSM_GPIO1_SHADOW_REG(0xF8)
#define QSD8X50_GPIO_INT_STATUS_4 MSM_GPIO1_SHADOW_REG(0xFC)
#define QSD8X50_GPIO_INT_STATUS_5 MSM_GPIO1_SHADOW_REG(0x100)
#define QSD8X50_GPIO_INT_STATUS_6 MSM_GPIO1_SHADOW_REG(0x104)
#define QSD8X50_GPIO_INT_STATUS_7 MSM_GPIO1_SHADOW_REG(0x108)
/*
* MSM7X30 registers
*/
/* output value */
#define MSM7X30_GPIO_OUT_0 MSM_GPIO1_REG(0x00) /* gpio 15-0 */
#define MSM7X30_GPIO_OUT_1 MSM_GPIO2_REG(0x00) /* gpio 43-16 */
#define MSM7X30_GPIO_OUT_2 MSM_GPIO1_REG(0x04) /* gpio 67-44 */
#define MSM7X30_GPIO_OUT_3 MSM_GPIO1_REG(0x08) /* gpio 94-68 */
#define MSM7X30_GPIO_OUT_4 MSM_GPIO1_REG(0x0C) /* gpio 106-95 */
#define MSM7X30_GPIO_OUT_5 MSM_GPIO1_REG(0x50) /* gpio 133-107 */
#define MSM7X30_GPIO_OUT_6 MSM_GPIO1_REG(0xC4) /* gpio 150-134 */
#define MSM7X30_GPIO_OUT_7 MSM_GPIO1_REG(0x214) /* gpio 181-151 */
/* same pin map as above, output enable */
#define MSM7X30_GPIO_OE_0 MSM_GPIO1_REG(0x10)
#define MSM7X30_GPIO_OE_1 MSM_GPIO2_REG(0x08)
#define MSM7X30_GPIO_OE_2 MSM_GPIO1_REG(0x14)
#define MSM7X30_GPIO_OE_3 MSM_GPIO1_REG(0x18)
#define MSM7X30_GPIO_OE_4 MSM_GPIO1_REG(0x1C)
#define MSM7X30_GPIO_OE_5 MSM_GPIO1_REG(0x54)
#define MSM7X30_GPIO_OE_6 MSM_GPIO1_REG(0xC8)
#define MSM7X30_GPIO_OE_7 MSM_GPIO1_REG(0x218)
/* same pin map as above, input read */
#define MSM7X30_GPIO_IN_0 MSM_GPIO1_REG(0x34)
#define MSM7X30_GPIO_IN_1 MSM_GPIO2_REG(0x20)
#define MSM7X30_GPIO_IN_2 MSM_GPIO1_REG(0x38)
#define MSM7X30_GPIO_IN_3 MSM_GPIO1_REG(0x3C)
#define MSM7X30_GPIO_IN_4 MSM_GPIO1_REG(0x40)
#define MSM7X30_GPIO_IN_5 MSM_GPIO1_REG(0x44)
#define MSM7X30_GPIO_IN_6 MSM_GPIO1_REG(0xCC)
#define MSM7X30_GPIO_IN_7 MSM_GPIO1_REG(0x21C)
/* same pin map as above, 1=edge 0=level interrup */
#define MSM7X30_GPIO_INT_EDGE_0 MSM_GPIO1_REG(0x60)
#define MSM7X30_GPIO_INT_EDGE_1 MSM_GPIO2_REG(0x50)
#define MSM7X30_GPIO_INT_EDGE_2 MSM_GPIO1_REG(0x64)
#define MSM7X30_GPIO_INT_EDGE_3 MSM_GPIO1_REG(0x68)
#define MSM7X30_GPIO_INT_EDGE_4 MSM_GPIO1_REG(0x6C)
#define MSM7X30_GPIO_INT_EDGE_5 MSM_GPIO1_REG(0xC0)
#define MSM7X30_GPIO_INT_EDGE_6 MSM_GPIO1_REG(0xD0)
#define MSM7X30_GPIO_INT_EDGE_7 MSM_GPIO1_REG(0x240)
/* same pin map as above, 1=positive 0=negative */
#define MSM7X30_GPIO_INT_POS_0 MSM_GPIO1_REG(0x70)
#define MSM7X30_GPIO_INT_POS_1 MSM_GPIO2_REG(0x58)
#define MSM7X30_GPIO_INT_POS_2 MSM_GPIO1_REG(0x74)
#define MSM7X30_GPIO_INT_POS_3 MSM_GPIO1_REG(0x78)
#define MSM7X30_GPIO_INT_POS_4 MSM_GPIO1_REG(0x7C)
#define MSM7X30_GPIO_INT_POS_5 MSM_GPIO1_REG(0xBC)
#define MSM7X30_GPIO_INT_POS_6 MSM_GPIO1_REG(0xD4)
#define MSM7X30_GPIO_INT_POS_7 MSM_GPIO1_REG(0x228)
/* same pin map as above, interrupt enable */
#define MSM7X30_GPIO_INT_EN_0 MSM_GPIO1_REG(0x80)
#define MSM7X30_GPIO_INT_EN_1 MSM_GPIO2_REG(0x60)
#define MSM7X30_GPIO_INT_EN_2 MSM_GPIO1_REG(0x84)
#define MSM7X30_GPIO_INT_EN_3 MSM_GPIO1_REG(0x88)
#define MSM7X30_GPIO_INT_EN_4 MSM_GPIO1_REG(0x8C)
#define MSM7X30_GPIO_INT_EN_5 MSM_GPIO1_REG(0xB8)
#define MSM7X30_GPIO_INT_EN_6 MSM_GPIO1_REG(0xD8)
#define MSM7X30_GPIO_INT_EN_7 MSM_GPIO1_REG(0x22C)
/* same pin map as above, write 1 to clear interrupt */
#define MSM7X30_GPIO_INT_CLEAR_0 MSM_GPIO1_REG(0x90)
#define MSM7X30_GPIO_INT_CLEAR_1 MSM_GPIO2_REG(0x68)
#define MSM7X30_GPIO_INT_CLEAR_2 MSM_GPIO1_REG(0x94)
#define MSM7X30_GPIO_INT_CLEAR_3 MSM_GPIO1_REG(0x98)
#define MSM7X30_GPIO_INT_CLEAR_4 MSM_GPIO1_REG(0x9C)
#define MSM7X30_GPIO_INT_CLEAR_5 MSM_GPIO1_REG(0xB4)
#define MSM7X30_GPIO_INT_CLEAR_6 MSM_GPIO1_REG(0xDC)
#define MSM7X30_GPIO_INT_CLEAR_7 MSM_GPIO1_REG(0x230)
/* same pin map as above, 1=interrupt pending */
#define MSM7X30_GPIO_INT_STATUS_0 MSM_GPIO1_REG(0xA0)
#define MSM7X30_GPIO_INT_STATUS_1 MSM_GPIO2_REG(0x70)
#define MSM7X30_GPIO_INT_STATUS_2 MSM_GPIO1_REG(0xA4)
#define MSM7X30_GPIO_INT_STATUS_3 MSM_GPIO1_REG(0xA8)
#define MSM7X30_GPIO_INT_STATUS_4 MSM_GPIO1_REG(0xAC)
#define MSM7X30_GPIO_INT_STATUS_5 MSM_GPIO1_REG(0xB0)
#define MSM7X30_GPIO_INT_STATUS_6 MSM_GPIO1_REG(0xE0)
#define MSM7X30_GPIO_INT_STATUS_7 MSM_GPIO1_REG(0x234)
#define FIRST_GPIO_IRQ MSM_GPIO_TO_INT(0)
#define MSM_GPIO_BANK(soc, bank, first, last) \
{ \
.regs = { \
.out = soc##_GPIO_OUT_##bank, \
.in = soc##_GPIO_IN_##bank, \
.int_status = soc##_GPIO_INT_STATUS_##bank, \
.int_clear = soc##_GPIO_INT_CLEAR_##bank, \
.int_en = soc##_GPIO_INT_EN_##bank, \
.int_edge = soc##_GPIO_INT_EDGE_##bank, \
.int_pos = soc##_GPIO_INT_POS_##bank, \
.oe = soc##_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;
}
static void msm_gpio_update_both_edge_detect(struct msm_gpio_chip *msm_chip)
{
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
static struct msm_gpio_chip *msm_gpio_chips;
static int msm_gpio_count;
static struct msm_gpio_chip msm_gpio_chips_msm7x01[] = {
MSM_GPIO_BANK(MSM7X00, 0, 0, 15),
MSM_GPIO_BANK(MSM7X00, 1, 16, 42),
MSM_GPIO_BANK(MSM7X00, 2, 43, 67),
MSM_GPIO_BANK(MSM7X00, 3, 68, 94),
MSM_GPIO_BANK(MSM7X00, 4, 95, 106),
MSM_GPIO_BANK(MSM7X00, 5, 107, 121),
};
static struct msm_gpio_chip msm_gpio_chips_msm7x30[] = {
MSM_GPIO_BANK(MSM7X30, 0, 0, 15),
MSM_GPIO_BANK(MSM7X30, 1, 16, 43),
MSM_GPIO_BANK(MSM7X30, 2, 44, 67),
MSM_GPIO_BANK(MSM7X30, 3, 68, 94),
MSM_GPIO_BANK(MSM7X30, 4, 95, 106),
MSM_GPIO_BANK(MSM7X30, 5, 107, 133),
MSM_GPIO_BANK(MSM7X30, 6, 134, 150),
MSM_GPIO_BANK(MSM7X30, 7, 151, 181),
};
static struct msm_gpio_chip msm_gpio_chips_qsd8x50[] = {
MSM_GPIO_BANK(QSD8X50, 0, 0, 15),
MSM_GPIO_BANK(QSD8X50, 1, 16, 42),
MSM_GPIO_BANK(QSD8X50, 2, 43, 67),
MSM_GPIO_BANK(QSD8X50, 3, 68, 94),
MSM_GPIO_BANK(QSD8X50, 4, 95, 103),
MSM_GPIO_BANK(QSD8X50, 5, 104, 121),
MSM_GPIO_BANK(QSD8X50, 6, 122, 152),
MSM_GPIO_BANK(QSD8X50, 7, 153, 164),
};
static void msm_gpio_irq_ack(struct irq_data *d)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = irq_data_get_irq_chip_data(d);
spin_lock_irqsave(&msm_chip->lock, irq_flags);
msm_gpio_clear_detect_status(msm_chip,
d->irq - gpio_to_irq(msm_chip->chip.base));
spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
}
static void msm_gpio_irq_mask(struct irq_data *d)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = irq_data_get_irq_chip_data(d);
unsigned offset = d->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(struct irq_data *d)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = irq_data_get_irq_chip_data(d);
unsigned offset = d->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(struct irq_data *d, unsigned int on)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = irq_data_get_irq_chip_data(d);
unsigned offset = d->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(struct irq_data *d, unsigned int flow_type)
{
unsigned long irq_flags;
struct msm_gpio_chip *msm_chip = irq_data_get_irq_chip_data(d);
unsigned offset = d->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_set_handler_locked(d->irq, handle_edge_irq);
} else {
writel(val & ~mask, msm_chip->regs.int_edge);
__irq_set_handler_locked(d->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 < msm_gpio_count; 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->irq_data.chip->irq_ack(&desc->irq_data);
}
static struct irq_chip msm_gpio_irq_chip = {
.name = "msmgpio",
.irq_ack = msm_gpio_irq_ack,
.irq_mask = msm_gpio_irq_mask,
.irq_unmask = msm_gpio_irq_unmask,
.irq_set_wake = msm_gpio_irq_set_wake,
.irq_set_type = msm_gpio_irq_set_type,
};
static int __init msm_init_gpio(void)
{
int i, j = 0;
if (cpu_is_msm7x01()) {
msm_gpio_chips = msm_gpio_chips_msm7x01;
msm_gpio_count = ARRAY_SIZE(msm_gpio_chips_msm7x01);
} else if (cpu_is_msm7x30()) {
msm_gpio_chips = msm_gpio_chips_msm7x30;
msm_gpio_count = ARRAY_SIZE(msm_gpio_chips_msm7x30);
} else if (cpu_is_qsd8x50()) {
msm_gpio_chips = msm_gpio_chips_qsd8x50;
msm_gpio_count = ARRAY_SIZE(msm_gpio_chips_qsd8x50);
} else {
return 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++;
irq_set_chip_data(i, &msm_gpio_chips[j]);
irq_set_chip_and_handler(i, &msm_gpio_irq_chip,
handle_edge_irq);
set_irq_flags(i, IRQF_VALID);
}
for (i = 0; i < msm_gpio_count; 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);
}
irq_set_chained_handler(INT_GPIO_GROUP1, msm_gpio_irq_handler);
irq_set_chained_handler(INT_GPIO_GROUP2, msm_gpio_irq_handler);
irq_set_irq_wake(INT_GPIO_GROUP1, 1);
irq_set_irq_wake(INT_GPIO_GROUP2, 2);
return 0;
}
postcore_initcall(msm_init_gpio);