From 1106143d7ab43ba07678c88c85417df219354ae8 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Mon, 11 Jan 2010 21:25:15 +0800 Subject: [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: Eric Miao --- arch/arm/mach-pxa/mfp-pxa2xx.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c') diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c index cf6b720c055f..c98b5a8c3b0f 100644 --- a/arch/arm/mach-pxa/mfp-pxa2xx.c +++ b/arch/arm/mach-pxa/mfp-pxa2xx.c @@ -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); -- cgit v1.2.3-59-g8ed1b