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Diffstat (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c')
-rw-r--r--arch/arm/mach-pxa/mfp-pxa2xx.c31
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