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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-01-09 00:36:42 -0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-01-09 00:49:40 -0800
commit3befc925cb658227fb207f20e6719987f7ee3190 (patch)
tree138ffa4d3bfb273a76340e4a5398b3d1e405617e /drivers/mfd
parentb2ed1b0bc69e53d68aa01b79ca0944311b553fc1 (diff)
mfd: Put WM8994 into cache only mode when suspending
This is required by the ASoC driver for very low power modes where the device is fully idle but we want to update controls. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/wm8994-core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 9b8d1ad28ee..d3d9d53ca9e 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -268,6 +268,7 @@ static int wm8994_suspend(struct device *dev)
wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));
+ regcache_cache_only(wm8994->regmap, true);
regcache_mark_dirty(wm8994->regmap);
wm8994->suspended = true;
@@ -298,6 +299,7 @@ static int wm8994_resume(struct device *dev)
return ret;
}
+ regcache_cache_only(wm8994->regmap, false);
ret = regcache_sync(wm8994->regmap);
if (ret != 0) {
dev_err(dev, "Failed to restore register map: %d\n", ret);