diff options
Diffstat (limited to 'arch/arm/plat-s3c/include/plat/gpio-core.h')
| -rw-r--r-- | arch/arm/plat-s3c/include/plat/gpio-core.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c/include/plat/gpio-core.h b/arch/arm/plat-s3c/include/plat/gpio-core.h index 3cb9105c481..ad68b32a7f9 100644 --- a/arch/arm/plat-s3c/include/plat/gpio-core.h +++ b/arch/arm/plat-s3c/include/plat/gpio-core.h @@ -47,3 +47,26 @@ static inline struct s3c_gpio_chip *to_s3c_gpio(struct gpio_chip *gpc) * other parts of the system. */ extern void s3c_gpiolib_add(struct s3c_gpio_chip *chip); + + +/* CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios + * for use with the configuration calls, and other parts of the s3c gpiolib + * support code. + * + * Not all s3c support code will need this, as some configurations of cpu + * may only support one or two different configuration options and have an + * easy gpio to s3c_gpio_chip mapping function. If this is the case, then + * the machine support file should provide its own s3c_gpiolib_getchip() + * and any other necessary functions. + */ + +#ifdef CONFIG_S3C_GPIO_TRACK +extern struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END]; + +static inline struct s3c_gpio_chip *s3c_gpiolib_getchip(unsigned int chip) +{ + return s3c_gpios[chip]; +} +#else +static inline void s3c_gpiolib_track(struct s3c_gpio_chip *chip) { } +#endif |