diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-10-31 16:14:32 (GMT) |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-12-15 23:33:42 (GMT) |
commit | 8a53bdb907cb924ed30f79bcfe7f4f15ff7de15e (patch) | |
tree | e2bca4f6a4988f4eeb79ff18ac782b2383d1cf92 /arch/arm/plat-s3c/include | |
parent | 7db6c82a37beabef7b76d232e3d20efacd74bd3a (diff) | |
download | linux-fsl-qoriq-8a53bdb907cb924ed30f79bcfe7f4f15ff7de15e.tar.xz |
[ARM] S3C: Add GPIO chip tracking
The gpiolib driver keeps its chip array to itself
and having a separate array for s3c-only gpios stops
any non-s3c gpio being used in one of the s3c specific
configuration calls.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c/include')
-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 3cb9105..ad68b32 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 |