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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2019-07-10 22:11:06 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-07-15 08:41:39 +0200 |
| commit | 20f2c4ee27955bb43a629715de9734211885adf1 (patch) | |
| tree | d404eeba471572c3f277df0028d8d1316ac69479 /include | |
| parent | af66ec677c40dfaed68a124d21dd59d5f8c63381 (diff) | |
| download | barebox-20f2c4ee27955bb43a629715de9734211885adf1.tar.gz barebox-20f2c4ee27955bb43a629715de9734211885adf1.tar.xz | |
gpio: allow for arch-specific ARCH_NR_GPIOS > 256
Some architectures have non-contiguous GPIO ranges where some GPIOs can
have identifiers exceeding the hardcoded ARCH_NR_GPIOs of 256.
One such example is the STM32MP, whose gpioz controller has identifiers
that go up to ('Z' - 'A' + 1) * 0x10 - 1 = 415.
Instead of increasing the array size for all architectures or doing
some sort of packing, allow architecture to define their own overriding
CONFIG_ARCH_NR_GPIO like the kernel does.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/gpio.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/gpio.h b/include/gpio.h index e822fd5347..1926edeca7 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -45,7 +45,11 @@ static inline int gpio_direction_active(unsigned gpio, int value) } #endif +#if defined(CONFIG_ARCH_NR_GPIO) && CONFIG_ARCH_NR_GPIO > 0 +#define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO +#else #define ARCH_NR_GPIOS 256 +#endif static inline int gpio_is_valid(int gpio) { |