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SubjectRe: [PATCH 05/14] ARM : SAMSUNG : Add GPIO_EXTRA for S3C2416.
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Am Samstag 22 Oktober 2011, 06:08:12 schrieb Paul Schilling:
> The S3C2416 has more GPIO than other S3C24XX processors.
>
> Signed-off-by: Paul Schilling <paul.s.schilling@gmail.com>
> ---
> arch/arm/mach-s3c2410/include/mach/gpio.h | 15 ++++++++++-----
> arch/arm/plat-s3c24xx/gpiolib.c | 10 ++++++++--
> 2 files changed, 18 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm/mach-s3c2410/include/mach/gpio.h
> b/arch/arm/mach-s3c2410/include/mach/gpio.h index f7f6b07..65a0bce 100644
> --- a/arch/arm/mach-s3c2410/include/mach/gpio.h
> +++ b/arch/arm/mach-s3c2410/include/mach/gpio.h
> @@ -20,22 +20,27 @@
> * devices that need GPIO.
> */
>
> +#if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2416)
> +#define ARCH_NR_GPIOS (32 * 12 + CONFIG_S3C24XX_GPIO_EXTRA)
> +#else
> #ifdef CONFIG_CPU_S3C244X
> #define ARCH_NR_GPIOS (32 * 9 + CONFIG_S3C24XX_GPIO_EXTRA)
> -#elif defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2416)
> -#define ARCH_NR_GPIOS (32 * 12 + CONFIG_S3C24XX_GPIO_EXTRA)
> #else
> #define ARCH_NR_GPIOS (256 + CONFIG_S3C24XX_GPIO_EXTRA)
> #endif
> +#endif
why are you moving these around? I don't see a functional change.


> #include <asm-generic/gpio.h>
> #include <mach/gpio-nrs.h>
> #include <mach/gpio-fns.h>
>
> -#ifdef CONFIG_CPU_S3C244X
> -#define S3C_GPIO_END (S3C2410_GPJ(0) + 32)
> -#elif defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2416)
> +
> +#if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2416)
> #define S3C_GPIO_END (S3C2410_GPM(0) + 32)
> #else
> +#ifdef CONFIG_CPU_S3C244X
> +#define S3C_GPIO_END (S3C2410_GPJ(0) + 32)
> +else
> #define S3C_GPIO_END (S3C2410_GPH(0) + 32)
> #endif
> +#endif
same as above

> diff --git a/arch/arm/plat-s3c24xx/gpiolib.c
> b/arch/arm/plat-s3c24xx/gpiolib.c index 243b641..93d4734 100644
> --- a/arch/arm/plat-s3c24xx/gpiolib.c
> +++ b/arch/arm/plat-s3c24xx/gpiolib.c
> @@ -34,6 +34,11 @@ static int s3c24xx_gpiolib_banka_input(struct gpio_chip
> *chip, unsigned offset) return -EINVAL;
> }
>
> +static int s3c24xx_gpiolib_bankm_output(struct gpio_chip *chip, unsigned
> offset, int value) +{
> + return -EINVAL;
> +}
> +
> static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
> unsigned offset, int value)
> {
> @@ -93,7 +98,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
> .base = S3C2410_GPA(0),
> .owner = THIS_MODULE,
> .label = "GPIOA",
> - .ngpio = 24,
> + .ngpio = 27,
> .direction_input = s3c24xx_gpiolib_banka_input,
> .direction_output = s3c24xx_gpiolib_banka_output,
> },
> @@ -167,7 +172,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
> .base = S3C2410_GPH(0),
> .owner = THIS_MODULE,
> .label = "GPIOH",
> - .ngpio = 11,
> + .ngpio = 15,
> },
> },
> /* GPIOS for the S3C2443 and later devices. */
> @@ -206,6 +211,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
> .owner = THIS_MODULE,
> .label = "GPIOM",
> .ngpio = 2,
> + .direction_output = s3c24xx_gpiolib_bankm_output,
> },
> },
> };
looks ok, but you will probably have to coordinate with Kgene as the Samsung
gpio support gets consolidated for 3.2 (i.e. in linux-next it currently sits
in drivers/gpio/gpio-samsung.c)

Heiko


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