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authorEric Miao <eric.y.miao@gmail.com>2010-04-20 14:52:50 +0800
committerEric Miao <eric.y.miao@gmail.com>2010-05-11 17:25:00 +0200
commitc09f431c338cf032c68ea68915f4dd85d92fd526 (patch)
tree5f3aefacd30ae7be6d613b863032aba5f69e7e62 /arch/arm/mach-pxa/mfp-pxa2xx.c
parent1106143d7ab43ba07678c88c85417df219354ae8 (diff)
[ARM] pxa: allow keypad GPIOs to wakeup when configured as generic
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c')
-rw-r--r--arch/arm/mach-pxa/mfp-pxa2xx.c31
1 files changed, 22 insertions, 9 deletions
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c
index c98b5a8c3b0f..e5b79210a90b 100644
--- a/arch/arm/mach-pxa/mfp-pxa2xx.c
+++ b/arch/arm/mach-pxa/mfp-pxa2xx.c
@@ -178,8 +178,17 @@ 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 +248,25 @@ 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;
}