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Diffstat (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c')
-rw-r--r--arch/arm/mach-pxa/mfp-pxa2xx.c43
1 files changed, 34 insertions, 9 deletions
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c
index cf6b720c055f..1d1419b73457 100644
--- a/arch/arm/mach-pxa/mfp-pxa2xx.c
+++ b/arch/arm/mach-pxa/mfp-pxa2xx.c
@@ -81,6 +81,7 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
PGSR(bank) &= ~mask;
is_out = 1;
break;
+ case MFP_LPM_INPUT:
case MFP_LPM_DEFAULT:
break;
default:
@@ -178,8 +179,17 @@ int gpio_set_wake(unsigned int gpio, unsigned int on)
if (!d->valid)
return -EINVAL;
- if (d->keypad_gpio)
- return -EINVAL;
+ /* Allow keypad GPIOs to wakeup system when
+ * configured as generic GPIOs.
+ */
+ if (d->keypad_gpio && (MFP_AF(d->config) == 0) &&
+ (d->config & MFP_LPM_CAN_WAKEUP)) {
+ if (on)
+ PKWR |= d->mask;
+ else
+ PKWR &= ~d->mask;
+ return 0;
+ }
mux_taken = (PWER & d->mux_mask) & (~d->mask);
if (on && mux_taken)
@@ -239,21 +249,25 @@ static int pxa27x_pkwr_gpio[] = {
int keypad_set_wake(unsigned int on)
{
unsigned int i, gpio, mask = 0;
-
- if (!on) {
- PKWR = 0;
- return 0;
- }
+ struct gpio_desc *d;
for (i = 0; i < ARRAY_SIZE(pxa27x_pkwr_gpio); i++) {
gpio = pxa27x_pkwr_gpio[i];
+ d = &gpio_desc[gpio];
- if (gpio_desc[gpio].config & MFP_LPM_CAN_WAKEUP)
+ /* skip if configured as generic GPIO */
+ if (MFP_AF(d->config) == 0)
+ continue;
+
+ if (d->config & MFP_LPM_CAN_WAKEUP)
mask |= gpio_desc[gpio].mask;
}
- PKWR = mask;
+ if (on)
+ PKWR |= mask;
+ else
+ PKWR &= ~mask;
return 0;
}
@@ -328,6 +342,17 @@ static int pxa2xx_mfp_suspend(struct sys_device *d, pm_message_t state)
{
int i;
+ /* set corresponding PGSR bit of those marked MFP_LPM_KEEP_OUTPUT */
+ for (i = 0; i < pxa_last_gpio; i++) {
+ if ((gpio_desc[i].config & MFP_LPM_KEEP_OUTPUT) &&
+ (GPDR(i) & GPIO_bit(i))) {
+ if (GPLR(i) & GPIO_bit(i))
+ PGSR(i) |= GPIO_bit(i);
+ else
+ PGSR(i) &= ~GPIO_bit(i);
+ }
+ }
+
for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) {
saved_gafr[0][i] = GAFR_L(i);
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