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Commit 1106143d authored by Eric Miao's avatar Eric Miao
Browse files

[ARM] pxa: add MFP_LPM_KEEP_OUTPUT flag to pin config 



Some pins are expected to keep their last level during suspend, and
introduce MFP_LPM_KEEP_OUTPUT for this.

Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent c8ee5c69

arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h

+2 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 
#define MFP_DIR(x)		(((x) >> 23) & 0x1)



#define MFP_LPM_CAN_WAKEUP	(0x1 << 24)

#define MFP_LPM_KEEP_OUTPUT	(0x1 << 25)



#define WAKEUP_ON_EDGE_RISE	(MFP_LPM_CAN_WAKEUP | MFP_LPM_EDGE_RISE)

#define WAKEUP_ON_EDGE_FALL	(MFP_LPM_CAN_WAKEUP | MFP_LPM_EDGE_FALL)

#define WAKEUP_ON_EDGE_BOTH	(MFP_LPM_CAN_WAKEUP | MFP_LPM_EDGE_BOTH)

arch/arm/mach-pxa/mfp-pxa2xx.c

+11 −0
Original line number Diff line number Diff line
@@ -328,6 +328,17 @@ 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);