diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2011-05-23 14:33:14 +0530 |
|---|---|---|
| committer | Niket Sirsi <nsirsi@nvidia.com> | 2011-05-27 15:42:54 -0700 |
| commit | a07de2f2e0037c15a321dbb93ae4d139d7ad72c8 (patch) | |
| tree | 5c8ab52c4e3e0e6f3dad0e746166de300b4ed7d2 /arch | |
| parent | 9b2aa51a8b4913948e3061706498c7f91d5aa827 (diff) | |
arm: tegra: gpio: Implementation for gpio_to_irq
Adding the support in function gpio_to_irq() such that the external
gpio peripheral driver can provide the gpio to irq number through
their gpio implementation.
Change-Id: Ibab369df435af79ce09d71e491a8ee851f2228ba
Reviewed-on: http://git-master/r/32563
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/gpio.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/include/mach/gpio.h b/arch/arm/mach-tegra/include/mach/gpio.h index 1462b258d374..aec47722938a 100644 --- a/arch/arm/mach-tegra/include/mach/gpio.h +++ b/arch/arm/mach-tegra/include/mach/gpio.h @@ -36,16 +36,23 @@ static inline int gpio_to_irq(unsigned int gpio) { + /* SOC gpio */ if (gpio < TEGRA_NR_GPIOS) return INT_GPIO_BASE + gpio; - return -EINVAL; + + /* For non soc gpio, the external peripheral driver need to + * provide the implementation */ + return __gpio_to_irq(gpio); } static inline int irq_to_gpio(unsigned int irq) { + /* SOC gpio */ if ((irq >= INT_GPIO_BASE) && (irq < INT_GPIO_BASE + INT_GPIO_NR)) return irq - INT_GPIO_BASE; - return -EINVAL; + + /* we don't supply reverse mappings for non-SOC gpios */ + return -EIO; } void tegra_gpio_enable(int gpio); |