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ARM: SAMSUNG: Add GPIO configuration read calls

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Add the necessary 1,2 and 4 bit configuration read calls for the new
gpio code to allow removal of the old s3c24xx gpio code.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks 2010-05-06 10:27:16 +09:00
parent 5690a6267f
commit 97a339995f
5 changed files with 100 additions and 1 deletions
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6
arch/arm/mach-s3c64xx/gpiolib.c
View file

@ -51,6 +51,7 @@
static struct s3c_gpio_cfg gpio_4bit_cfg_noint = {
.set_config = s3c_gpio_setcfg_s3c64xx_4bit,
.get_config = s3c_gpio_getcfg_s3c64xx_4bit,
.set_pull = s3c_gpio_setpull_updown,
.get_pull = s3c_gpio_getpull_updown,
};
@ -58,12 +59,14 @@ static struct s3c_gpio_cfg gpio_4bit_cfg_noint = {
static struct s3c_gpio_cfg gpio_4bit_cfg_eint0111 = {
.cfg_eint = 7,
.set_config = s3c_gpio_setcfg_s3c64xx_4bit,
.get_config = s3c_gpio_getcfg_s3c64xx_4bit,
.set_pull = s3c_gpio_setpull_updown,
.get_pull = s3c_gpio_getpull_updown,
};
static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = {
.cfg_eint = 3,
.get_config = s3c_gpio_getcfg_s3c64xx_4bit,
.set_config = s3c_gpio_setcfg_s3c64xx_4bit,
.set_pull = s3c_gpio_setpull_updown,
.get_pull = s3c_gpio_getpull_updown,
@ -171,6 +174,7 @@ static struct s3c_gpio_chip gpio_4bit2[] = {
static struct s3c_gpio_cfg gpio_2bit_cfg_noint = {
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
.set_pull = s3c_gpio_setpull_updown,
.get_pull = s3c_gpio_getpull_updown,
};
@ -178,6 +182,7 @@ static struct s3c_gpio_cfg gpio_2bit_cfg_noint = {
static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = {
.cfg_eint = 2,
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
.set_pull = s3c_gpio_setpull_updown,
.get_pull = s3c_gpio_getpull_updown,
};
@ -185,6 +190,7 @@ static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = {
static struct s3c_gpio_cfg gpio_2bit_cfg_eint11 = {
.cfg_eint = 3,
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
.set_pull = s3c_gpio_setpull_updown,
.get_pull = s3c_gpio_getpull_updown,
};

5
arch/arm/mach-s5p6440/gpio.c
View file

@ -161,12 +161,15 @@ static struct s3c_gpio_cfg s5p6440_gpio_cfgs[] = {
}, {
.cfg_eint = 0,
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
}, {
.cfg_eint = 2,
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
}, {
.cfg_eint = 3,
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
},
};
@ -279,6 +282,8 @@ void __init s5p6440_gpiolib_set_cfg(struct s3c_gpio_cfg *chipcfg, int nr_chips)
for (; nr_chips > 0; nr_chips--, chipcfg++) {
if (!chipcfg->set_config)
chipcfg->set_config = s3c_gpio_setcfg_s3c64xx_4bit;
if (!chipcfg->get_config)
chipcfg->get_config = s3c_gpio_getcfg_s3c64xx_4bit;
if (!chipcfg->set_pull)
chipcfg->set_pull = s3c_gpio_setpull_updown;
if (!chipcfg->get_pull)

2
arch/arm/plat-s3c24xx/gpiolib.c
View file

@ -81,10 +81,12 @@ static int s3c24xx_gpiolib_bankg_toirq(struct gpio_chip *chip, unsigned offset)
static struct s3c_gpio_cfg s3c24xx_gpiocfg_banka = {
.set_config = s3c_gpio_setcfg_s3c24xx_a,
.get_config = s3c_gpio_getcfg_s3c24xx_a,
};
struct s3c_gpio_cfg s3c24xx_gpiocfg_default = {
.set_config = s3c_gpio_setcfg_s3c24xx,
.get_config = s3c_gpio_getcfg_s3c24xx,
};
struct s3c_gpio_chip s3c24xx_gpios[] = {

47
arch/arm/plat-samsung/gpio-config.c
View file

@ -1,7 +1,7 @@
/* linux/arch/arm/plat-s3c/gpio-config.c
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Copyright 2008-2010 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
@ -87,6 +87,19 @@ int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
return 0;
}
unsigned s3c_gpio_getcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
unsigned int off)
{
u32 con;
con = __raw_readl(chip->base);
con >>= off;
con &= 1;
con++;
return S3C_GPIO_SFN(con);
}
int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
unsigned int off, unsigned int cfg)
{
@ -109,6 +122,19 @@ int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
return 0;
}
unsigned int s3c_gpio_getcfg_s3c24xx(struct s3c_gpio_chip *chip,
unsigned int off)
{
u32 con;
con = __raw_readl(chip->base);
con >>= off * 2;
con &= 3;
/* this conversion works for IN and OUT as well as special mode */
return S3C_GPIO_SPECIAL(con);
}
#endif
#ifdef CONFIG_S3C_GPIO_CFG_S3C64XX
@ -134,6 +160,25 @@ int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
return 0;
}
unsigned s3c_gpio_getcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
unsigned int off)
{
void __iomem *reg = chip->base;
unsigned int shift = (off & 7) * 4;
u32 con;
if (off < 8 && chip->chip.ngpio > 8)
reg -= 4;
con = __raw_readl(reg);
con >>= shift;
con &= 0xf;
/* this conversion works for IN and OUT as well as special mode */
return S3C_GPIO_SPECIAL(con);
}
#endif /* CONFIG_S3C_GPIO_CFG_S3C64XX */
#ifdef CONFIG_S3C_GPIO_PULL_UPDOWN

41
arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h
View file

@ -52,6 +52,18 @@ static inline int s3c_gpio_do_setpull(struct s3c_gpio_chip *chip,
extern int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
unsigned int off, unsigned int cfg);
/**
* s3c_gpio_getcfg_s3c24xx - S3C24XX style GPIO configuration read.
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
*
* The reverse of s3c_gpio_setcfg_s3c24xx(). Will return a value whicg
* could be directly passed back to s3c_gpio_setcfg_s3c24xx(), from the
* S3C_GPIO_SPECIAL() macro.
*/
unsigned int s3c_gpio_getcfg_s3c24xx(struct s3c_gpio_chip *chip,
unsigned int off);
/**
* s3c_gpio_setcfg_s3c24xx_a - S3C24XX style GPIO configuration (Bank A)
* @chip: The gpio chip that is being configured.
@ -65,6 +77,21 @@ extern int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
extern int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
unsigned int off, unsigned int cfg);
/**
* s3c_gpio_getcfg_s3c24xx_a - S3C24XX style GPIO configuration read (Bank A)
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
*
* The reverse of s3c_gpio_setcfg_s3c24xx_a() turning an GPIO into a usable
* GPIO configuration value.
*
* @sa s3c_gpio_getcfg_s3c24xx
* @sa s3c_gpio_getcfg_s3c64xx_4bit
*/
extern unsigned s3c_gpio_getcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
unsigned int off);
/**
* s3c_gpio_setcfg_s3c64xx_4bit - S3C64XX 4bit single register GPIO config.
* @chip: The gpio chip that is being configured.
@ -85,6 +112,20 @@ extern int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
unsigned int off, unsigned int cfg);
/**
* s3c_gpio_getcfg_s3c64xx_4bit - S3C64XX 4bit single register GPIO config read.
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
*
* The reverse of s3c_gpio_setcfg_s3c64xx_4bit(), turning a gpio configuration
* register setting into a value the software can use, such as could be passed
* to s3c_gpio_setcfg_s3c64xx_4bit().
*
* @sa s3c_gpio_getcfg_s3c24xx
*/
extern unsigned s3c_gpio_getcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
unsigned int off);
/* Pull-{up,down} resistor controls.
*
* S3C2410,S3C2440,S3C24A0 = Pull-UP,