xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Código Issues Pull requests Ações Pacotes Projetos Versões Wiki Atividade

[ARM] S3C: Move common GPIO code from plat-s3c24xx

Ver código fonte 
Move the common parts of the GPIO code into plat-s3c
for use with both the s3c24xx and s3c64xx systems.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Esse commit está contido em:
Ben Dooks
2008-10-31 16:14:31 +00:00
pai efd3a8eb15
commit 7db6c82a37
5 arquivos alterados com 187 adições e 118 exclusões
Baixar arquivo de patch Baixar arquivo de diferenças Expandir todos os arquivos Colapsar todos os arquivos

123
arch/arm/plat-s3c24xx/gpiolib.c
Ver arquivo

@@ -19,104 +19,12 @@
#include <linux/io.h>
#include <linux/gpio.h>
#include <plat/gpio-core.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <mach/regs-gpio.h>
struct s3c24xx_gpio_chip {
struct gpio_chip chip;
void __iomem *base;
};
static inline struct s3c24xx_gpio_chip *to_s3c_chip(struct gpio_chip *gpc)
{
return container_of(gpc, struct s3c24xx_gpio_chip, chip);
}
/* these routines are exported for use by other parts of the platform
* and system support, but are not intended to be used directly by the
* drivers themsevles.
*/
static int s3c24xx_gpiolib_input(struct gpio_chip *chip, unsigned offset)
{
struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long con;
local_irq_save(flags);
con = __raw_readl(base + 0x00);
con &= ~(3 << (offset * 2));
con |= (S3C2410_GPIO_OUTPUT & 0xf) << (offset * 2);
__raw_writel(con, base + 0x00);
local_irq_restore(flags);
return 0;
}
static int s3c24xx_gpiolib_output(struct gpio_chip *chip,
unsigned offset, int value)
{
struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long dat;
unsigned long con;
local_irq_save(flags);
dat = __raw_readl(base + 0x04);
dat &= ~(1 << offset);
if (value)
dat |= 1 << offset;
__raw_writel(dat, base + 0x04);
con = __raw_readl(base + 0x00);
con &= ~(3 << (offset * 2));
con |= (S3C2410_GPIO_OUTPUT & 0xf) << (offset * 2);
__raw_writel(con, base + 0x00);
__raw_writel(dat, base + 0x04);
local_irq_restore(flags);
return 0;
}
static void s3c24xx_gpiolib_set(struct gpio_chip *chip,
unsigned offset, int value)
{
struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long dat;
local_irq_save(flags);
dat = __raw_readl(base + 0x04);
dat &= ~(1 << offset);
if (value)
dat |= 1 << offset;
__raw_writel(dat, base + 0x04);
local_irq_restore(flags);
}
static int s3c24xx_gpiolib_get(struct gpio_chip *chip, unsigned offset)
{
struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
unsigned long val;
val = __raw_readl(ourchip->base + 0x04);
val >>= offset;
val &= 1;
return val;
}
static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
{
return -EINVAL;
@@ -125,7 +33,7 @@ static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
unsigned offset, int value)
{
struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long dat;
@@ -151,7 +59,7 @@ static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
return 0;
}
static struct s3c24xx_gpio_chip gpios[] = {
static struct s3c_gpio_chip gpios[] = {
[0] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPA0),
.chip = {
@@ -219,34 +127,13 @@ static struct s3c24xx_gpio_chip gpios[] = {
},
};
static __init void s3c24xx_gpiolib_add(struct s3c24xx_gpio_chip *chip)
{
struct gpio_chip *gc = &chip->chip;
BUG_ON(!chip->base);
BUG_ON(!gc->label);
BUG_ON(!gc->ngpio);
if (!gc->direction_input)
gc->direction_input = s3c24xx_gpiolib_input;
if (!gc->direction_output)
gc->direction_output = s3c24xx_gpiolib_output;
if (!gc->set)
gc->set = s3c24xx_gpiolib_set;
if (!gc->get)
gc->get = s3c24xx_gpiolib_get;
/* gpiochip_add() prints own failure message on error. */
gpiochip_add(gc);
}
static __init int s3c24xx_gpiolib_init(void)
{
struct s3c24xx_gpio_chip *chip = gpios;
struct s3c_gpio_chip *chip = gpios;
int gpn;
for (gpn = 0; gpn < ARRAY_SIZE(gpios); gpn++, chip++)
s3c24xx_gpiolib_add(chip);
s3c_gpiolib_add(chip);
return 0;
}