[PATCH 09/11] ARM: S5PC100: Add support for gpio interrupt
Marek Szyprowski
m.szyprowski at samsung.com
Tue May 18 06:38:47 EDT 2010
This patch moves support for gpio interrupts from plat-s5pc1xx to
mach-s5pc100 directory.
Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
arch/arm/mach-s5pc100/Makefile | 2 +-
arch/arm/mach-s5pc100/gpiolib.c | 9 +-
arch/arm/{plat-s5pc1xx => mach-s5pc100}/irq-gpio.c | 78 ++++++++++----------
3 files changed, 44 insertions(+), 45 deletions(-)
rename arch/arm/{plat-s5pc1xx => mach-s5pc100}/irq-gpio.c (72%)
diff --git a/arch/arm/mach-s5pc100/Makefile b/arch/arm/mach-s5pc100/Makefile
index 9b52d2a..6e3f57c 100644
--- a/arch/arm/mach-s5pc100/Makefile
+++ b/arch/arm/mach-s5pc100/Makefile
@@ -11,7 +11,7 @@ obj- :=
# Core support for S5PC100 system
-obj-$(CONFIG_CPU_S5PC100) += cpu.o init.o clock.o gpiolib.o
+obj-$(CONFIG_CPU_S5PC100) += cpu.o init.o clock.o gpiolib.o irq-gpio.o
obj-$(CONFIG_CPU_S5PC100) += setup-i2c0.o
# Helper and device support
diff --git a/arch/arm/mach-s5pc100/gpiolib.c b/arch/arm/mach-s5pc100/gpiolib.c
index 494a53b..88dd913 100644
--- a/arch/arm/mach-s5pc100/gpiolib.c
+++ b/arch/arm/mach-s5pc100/gpiolib.c
@@ -387,7 +387,6 @@ extern void s5pc100_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
static __init void s5pc100_gpiolib_link(struct s3c_gpio_chip *chip)
{
-#if 0
/* Interrupt */
if (chip->config == &gpio_cfg) {
int i, irq;
@@ -401,9 +400,9 @@ static __init void s5pc100_gpiolib_link(struct s3c_gpio_chip *chip)
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
- } else if (chip->config == &gpio_cfg_eint)
+ } else if (chip->config == &gpio_cfg_eint) {
chip->chip.to_irq = s5pc100_gpiolib_to_eint;
-#endif
+ }
}
static __init int s5pc100_gpiolib_init(void)
@@ -419,10 +418,10 @@ static __init int s5pc100_gpiolib_init(void)
samsung_gpiolib_add_4bit_chips(s5pc100_gpio_chips,
ARRAY_SIZE(s5pc100_gpio_chips));
-#if 0
+
/* Interrupt */
set_irq_chained_handler(IRQ_GPIOINT, s5pc100_irq_gpioint_handler);
-#endif
+
return 0;
}
core_initcall(s5pc100_gpiolib_init);
diff --git a/arch/arm/plat-s5pc1xx/irq-gpio.c b/arch/arm/mach-s5pc100/irq-gpio.c
similarity index 72%
rename from arch/arm/plat-s5pc1xx/irq-gpio.c
rename to arch/arm/mach-s5pc100/irq-gpio.c
index fecca7a..2bf86c1 100644
--- a/arch/arm/plat-s5pc1xx/irq-gpio.c
+++ b/arch/arm/mach-s5pc100/irq-gpio.c
@@ -1,9 +1,9 @@
/*
- * arch/arm/plat-s5pc1xx/irq-gpio.c
+ * arch/arm/mach-s5pc100/irq-gpio.c
*
* Copyright (C) 2009 Samsung Electronics
*
- * S5PC1XX - Interrupt handling for IRQ_GPIO${group}(x)
+ * S5PC100 - Interrupt handling for IRQ_GPIO${group}(x)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -19,7 +19,7 @@
#include <mach/map.h>
#include <plat/gpio-cfg.h>
-#define S5PC1XX_GPIOREG(x) (S5PC1XX_VA_GPIO + (x))
+#define S5P_GPIOREG(x) (S5P_VA_GPIO + (x))
#define CON_OFFSET 0x700
#define MASK_OFFSET 0x900
@@ -49,7 +49,7 @@ static int group_to_pend_offset(int group)
return group << 2;
}
-static int s5pc1xx_get_start(unsigned int group)
+static int s5pc100_get_start(unsigned int group)
{
switch (group) {
case 0: return S5PC100_GPIO_A0_START;
@@ -80,7 +80,7 @@ static int s5pc1xx_get_start(unsigned int group)
return -EINVAL;
}
-static int s5pc1xx_get_group(unsigned int irq)
+static int s5pc100_get_group(unsigned int irq)
{
irq -= S3C_IRQ_GPIO(0);
@@ -134,67 +134,67 @@ static int s5pc1xx_get_group(unsigned int irq)
return -EINVAL;
}
-static int s5pc1xx_get_offset(unsigned int irq)
+static int s5pc100_get_offset(unsigned int irq)
{
struct gpio_chip *chip = get_irq_data(irq);
return irq - S3C_IRQ_GPIO(chip->base);
}
-static void s5pc1xx_gpioint_ack(unsigned int irq)
+static void s5pc100_gpioint_ack(unsigned int irq)
{
int group, offset, pend_offset;
unsigned int value;
- group = s5pc1xx_get_group(irq);
- offset = s5pc1xx_get_offset(irq);
+ group = s5pc100_get_group(irq);
+ offset = s5pc100_get_offset(irq);
pend_offset = group_to_pend_offset(group);
- value = __raw_readl(S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset);
+ value = __raw_readl(S5P_GPIOREG(PEND_OFFSET) + pend_offset);
value |= 1 << offset;
- __raw_writel(value, S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset);
+ __raw_writel(value, S5P_GPIOREG(PEND_OFFSET) + pend_offset);
}
-static void s5pc1xx_gpioint_mask(unsigned int irq)
+static void s5pc100_gpioint_mask(unsigned int irq)
{
int group, offset, mask_offset;
unsigned int value;
- group = s5pc1xx_get_group(irq);
- offset = s5pc1xx_get_offset(irq);
+ group = s5pc100_get_group(irq);
+ offset = s5pc100_get_offset(irq);
mask_offset = group_to_mask_offset(group);
- value = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+ value = __raw_readl(S5P_GPIOREG(MASK_OFFSET) + mask_offset);
value |= 1 << offset;
- __raw_writel(value, S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+ __raw_writel(value, S5P_GPIOREG(MASK_OFFSET) + mask_offset);
}
-static void s5pc1xx_gpioint_unmask(unsigned int irq)
+static void s5pc100_gpioint_unmask(unsigned int irq)
{
int group, offset, mask_offset;
unsigned int value;
- group = s5pc1xx_get_group(irq);
- offset = s5pc1xx_get_offset(irq);
+ group = s5pc100_get_group(irq);
+ offset = s5pc100_get_offset(irq);
mask_offset = group_to_mask_offset(group);
- value = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+ value = __raw_readl(S5P_GPIOREG(MASK_OFFSET) + mask_offset);
value &= ~(1 << offset);
- __raw_writel(value, S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+ __raw_writel(value, S5P_GPIOREG(MASK_OFFSET) + mask_offset);
}
-static void s5pc1xx_gpioint_mask_ack(unsigned int irq)
+static void s5pc100_gpioint_mask_ack(unsigned int irq)
{
- s5pc1xx_gpioint_mask(irq);
- s5pc1xx_gpioint_ack(irq);
+ s5pc100_gpioint_mask(irq);
+ s5pc100_gpioint_ack(irq);
}
-static int s5pc1xx_gpioint_set_type(unsigned int irq, unsigned int type)
+static int s5pc100_gpioint_set_type(unsigned int irq, unsigned int type)
{
int group, offset, con_offset;
unsigned int value;
- group = s5pc1xx_get_group(irq);
- offset = s5pc1xx_get_offset(irq);
+ group = s5pc100_get_group(irq);
+ offset = s5pc100_get_offset(irq);
con_offset = group_to_con_offset(group);
switch (type) {
@@ -221,24 +221,24 @@ static int s5pc1xx_gpioint_set_type(unsigned int irq, unsigned int type)
}
- value = __raw_readl(S5PC1XX_GPIOREG(CON_OFFSET) + con_offset);
+ value = __raw_readl(S5P_GPIOREG(CON_OFFSET) + con_offset);
value &= ~(0xf << (offset * 0x4));
value |= (type << (offset * 0x4));
- __raw_writel(value, S5PC1XX_GPIOREG(CON_OFFSET) + con_offset);
+ __raw_writel(value, S5P_GPIOREG(CON_OFFSET) + con_offset);
return 0;
}
-struct irq_chip s5pc1xx_gpioint = {
+struct irq_chip s5pc100_gpioint = {
.name = "GPIO",
- .ack = s5pc1xx_gpioint_ack,
- .mask = s5pc1xx_gpioint_mask,
- .mask_ack = s5pc1xx_gpioint_mask_ack,
- .unmask = s5pc1xx_gpioint_unmask,
- .set_type = s5pc1xx_gpioint_set_type,
+ .ack = s5pc100_gpioint_ack,
+ .mask = s5pc100_gpioint_mask,
+ .mask_ack = s5pc100_gpioint_mask_ack,
+ .unmask = s5pc100_gpioint_unmask,
+ .set_type = s5pc100_gpioint_set_type,
};
-void s5pc1xx_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
+void s5pc100_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
{
int group, offset, pend_offset, mask_offset;
int real_irq, group_end;
@@ -248,17 +248,17 @@ void s5pc1xx_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
for (group = 0; group < group_end; group++) {
pend_offset = group_to_pend_offset(group);
- pend = __raw_readl(S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset);
+ pend = __raw_readl(S5P_GPIOREG(PEND_OFFSET) + pend_offset);
if (!pend)
continue;
mask_offset = group_to_mask_offset(group);
- mask = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+ mask = __raw_readl(S5P_GPIOREG(MASK_OFFSET) + mask_offset);
pend &= ~mask;
for (offset = 0; offset < 8; offset++) {
if (pend & (1 << offset)) {
- real_irq = s5pc1xx_get_start(group) + offset;
+ real_irq = s5pc100_get_start(group) + offset;
generic_handle_irq(S3C_IRQ_GPIO(real_irq));
}
}
--
1.6.4
More information about the linux-arm-kernel
mailing list