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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-12-01 17:19:44 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-12-14 17:23:31 +0800
commita3462490b4d354c94031bfe644c65d374fc04aa6 (patch)
tree9b6b45b2e1cda704a8dcbc08c5ead30dd0fd874b /drivers/mfd/wm8994-core.c
parentd0616bbed18884cb2475ca0abb5a596105444b96 (diff)
downloadlinux-a3462490b4d354c94031bfe644c65d374fc04aa6.tar.bz2
mfd: Test for jack detection when deciding if wm8994 should suspend
The jack detection on WM1811 is often required during system suspend, add it as another check when deciding if we should suspend. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/wm8994-core.c')
-rw-r--r--drivers/mfd/wm8994-core.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 93f8599aba32..9b8d1ad28ee1 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -241,6 +241,20 @@ static int wm8994_suspend(struct device *dev)
break;
}
+ switch (wm8994->type) {
+ case WM1811:
+ ret = wm8994_reg_read(wm8994, WM8994_ANTIPOP_2);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read jackdet: %d\n", ret);
+ } else if (ret & WM1811_JACKDET_MODE_MASK) {
+ dev_dbg(dev, "CODEC still active, ignoring suspend\n");
+ return 0;
+ }
+ break;
+ default:
+ break;
+ }
+
/* Disable LDO pulldowns while the device is suspended if we
* don't know that something will be driving them. */
if (!wm8994->ldo_ena_always_driven)