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| author |   Eric Miao <eric.y.miao@gmail.com> | 2010-04-20 14:52:50 +0800 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2010-05-11 17:25:00 +0200 |
| commit | c09f431c338cf032c68ea68915f4dd85d92fd526 (patch) | |
| tree | 5f3aefacd30ae7be6d613b863032aba5f69e7e62 /arch/arm/mach-pxa | |
| parent | [ARM] pxa: add MFP_LPM_KEEP_OUTPUT flag to pin config (diff) | |
| download | linux-dev-c09f431c338cf032c68ea68915f4dd85d92fd526.tar.xz linux-dev-c09f431c338cf032c68ea68915f4dd85d92fd526.zip | |
[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')
| -rw-r--r-- | arch/arm/mach-pxa/mfp-pxa2xx.c | 31 |
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; } |