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[ARM] pxa: add muxed gpio wakeup sources on pxa2xx architectures

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PXA SoC have several GPIOs muxed on only one wakeup source.
Add support for these wakeup sources which were missing
in mfp core support.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
This commit is contained in:
Robert Jarzmik 2008-11-13 23:30:00 +01:00 committed by Eric Miao
parent afb5b5c9ad
commit 9968711468
1 changed files with 29 additions and 2 deletions
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31
arch/arm/mach-pxa/mfp-pxa2xx.c
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@ -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