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| author | Eric Miao <eric.y.miao@gmail.com> | 2010-01-11 21:25:15 +0800 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2010-05-11 17:24:59 +0200 |
| commit | 1106143d7ab43ba07678c88c85417df219354ae8 (patch) | |
| tree | 93eed0f0dae58aaa00549a4e1d49a349a631de14 /arch/arm/mach-pxa/mfp-pxa2xx.c | |
| parent | c8ee5c69516fdd973b981e3ac12d49b3133930cd (diff) | |
| download | op-kernel-dev-1106143d7ab43ba07678c88c85417df219354ae8.zip op-kernel-dev-1106143d7ab43ba07678c88c85417df219354ae8.tar.gz | |
[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 <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c')
| -rw-r--r-- | arch/arm/mach-pxa/mfp-pxa2xx.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c index cf6b720..c98b5a8 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); |
