diff options
Diffstat (limited to 'arch/arm/mach-tegra/board-apalis_t30.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-apalis_t30.c | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/board-apalis_t30.c b/arch/arm/mach-tegra/board-apalis_t30.c index d6c1955e3f32..a5eabb35ddae 100644 --- a/arch/arm/mach-tegra/board-apalis_t30.c +++ b/arch/arm/mach-tegra/board-apalis_t30.c @@ -47,6 +47,7 @@ #include "devices.h" #include "gpio-names.h" #include "pm.h" +#include "wakeups-t3.h" /* ADC */ @@ -409,9 +410,57 @@ static void __init apalis_t30_i2c_init(void) //TODO -/* Keys */ +/* Keys + * Note: active-low means pull-ups required on carrier board resp. via + * pin-muxing + * Note2: power-key active-high due to EvalBoard v3.1a having 100 K pull-down + * on SODIMM pin 45 + * Note3: menu-key active-high due to strong pull-down on multiplexed + * ACC1_DETECT + * Note4: Wake keys need to be supported by hardware, see wakeups-t3.h + */ -//TODO +#ifdef CONFIG_KEYBOARD_GPIO +#define GPIO_KEY(_id, _gpio, _lowactive, _iswake) \ + { \ + .code = _id, \ + .gpio = TEGRA_GPIO_##_gpio, \ + .active_low = _lowactive, \ + .desc = #_id, \ + .type = EV_KEY, \ + .wakeup = _iswake, \ + .debounce_interval = 10, \ + } + +static struct gpio_keys_button apalis_t30_keys[] = { + GPIO_KEY(KEY_POWER, PV1, 0, 1), /* SODIMM pin 45, Iris X16-20/EvalBoard X3 B24 */ +}; + +#define PMC_WAKE_STATUS 0x14 + +static int apalis_t30_wakeup_key(void) +{ + unsigned long status = + readl(IO_ADDRESS(TEGRA_PMC_BASE) + PMC_WAKE_STATUS); + + return (status & (1 << TEGRA_WAKE_GPIO_PV1)) ? + KEY_POWER : KEY_RESERVED; +} + +static struct gpio_keys_platform_data apalis_t30_keys_platform_data = { + .buttons = apalis_t30_keys, + .nbuttons = ARRAY_SIZE(apalis_t30_keys), + .wakeup_key = apalis_t30_wakeup_key, +}; + +static struct platform_device apalis_t30_keys_device = { + .name = "gpio-keys", + .id = 0, + .dev = { + .platform_data = &apalis_t30_keys_platform_data, + }, +}; +#endif /* CONFIG_KEYBOARD_GPIO */ /* MMC/SD */ @@ -1224,6 +1273,9 @@ static struct platform_device *apalis_t30_devices[] __initdata = { #if defined(CONFIG_TEGRA_IOVMM_SMMU) || defined(CONFIG_TEGRA_IOMMU_SMMU) &tegra_smmu_device, #endif +#ifdef CONFIG_KEYBOARD_GPIO + &apalis_t30_keys_device, +#endif &tegra_wdt0_device, &tegra_wdt1_device, &tegra_wdt2_device, |