diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-pxa/mfp-pxa2xx.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c index 2061c00c8ead..28d10679e225 100644 --- a/arch/arm/mach-pxa/mfp-pxa2xx.c +++ b/arch/arm/mach-pxa/mfp-pxa2xx.c @@ -39,6 +39,7 @@ struct gpio_desc { unsigned can_wakeup : 1; unsigned keypad_gpio : 1; unsigned int mask; /* bit mask in PWER or PKWR */ + unsigned int mux_mask; /* bit mask of muxed gpio bits, 0 if no mux */ unsigned long config; }; @@ -169,7 +170,7 @@ void pxa2xx_mfp_set_lpm(int mfp, unsigned long lpm) int gpio_set_wake(unsigned int gpio, unsigned int on) { struct gpio_desc *d; - unsigned long c; + unsigned long c, mux_taken; if (gpio > mfp_to_gpio(MFP_PIN_GPIO127)) return -EINVAL; @@ -183,9 +184,13 @@ int gpio_set_wake(unsigned int gpio, unsigned int on) if (d->keypad_gpio) return -EINVAL; + mux_taken = (PWER & d->mux_mask) & (~d->mask); + if (on && mux_taken) + return -EBUSY; + if (d->can_wakeup && (c & MFP_LPM_CAN_WAKEUP)) { if (on) { - PWER |= d->mask; + PWER = (PWER & ~d->mux_mask) | d->mask; if (c & MFP_LPM_EDGE_RISE) PRER |= d->mask; @@ -251,6 +256,22 @@ int keypad_set_wake(unsigned int on) return 0; } +#define PWER_WEMUX2_GPIO38 (1 << 16) +#define PWER_WEMUX2_GPIO53 (2 << 16) +#define PWER_WEMUX2_GPIO40 (3 << 16) +#define PWER_WEMUX2_GPIO36 (4 << 16) +#define PWER_WEMUX2_MASK (7 << 16) +#define PWER_WEMUX3_GPIO31 (1 << 19) +#define PWER_WEMUX3_GPIO113 (2 << 19) +#define PWER_WEMUX3_MASK (3 << 19) + +#define INIT_GPIO_DESC_MUXED(mux, gpio) \ +do { \ + gpio_desc[(gpio)].can_wakeup = 1; \ + gpio_desc[(gpio)].mask = PWER_ ## mux ## _GPIO ##gpio; \ + gpio_desc[(gpio)].mux_mask = PWER_ ## mux ## _MASK; \ +} while (0) + static void __init pxa27x_mfp_init(void) { int i, gpio; @@ -286,6 +307,12 @@ static void __init pxa27x_mfp_init(void) gpio_desc[35].can_wakeup = 1; gpio_desc[35].mask = PWER_WE35; + INIT_GPIO_DESC_MUXED(WEMUX3, 31); + INIT_GPIO_DESC_MUXED(WEMUX3, 113); + INIT_GPIO_DESC_MUXED(WEMUX2, 38); + INIT_GPIO_DESC_MUXED(WEMUX2, 53); + INIT_GPIO_DESC_MUXED(WEMUX2, 40); + INIT_GPIO_DESC_MUXED(WEMUX2, 36); gpio_nr = 121; } #else |