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ASoC: wm8962: Restore device state after reset in runtime resume

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After the device has been reset we need to repeat the same
initialisation we do on probe to make sure that the device is in
a known state.

Tested-by: Nicolin Chen <b42378@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown
2013-06-07 16:19:58 +01:00
committed by Mark Brown
parent d74e9e7090
commit 9c24b16722
1 changed files with 15 additions and 0 deletions
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15
sound/soc/codecs/wm8962.c
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@@ -3756,6 +3756,21 @@ static int wm8962_runtime_resume(struct device *dev)
wm8962_reset(wm8962);
/* SYSCLK defaults to on; make sure it is off so we can safely
* write to registers if the device is declocked.
*/
regmap_update_bits(wm8962->regmap, WM8962_CLOCKING2,
WM8962_SYSCLK_ENA, 0);
/* Ensure we have soft control over all registers */
regmap_update_bits(wm8962->regmap, WM8962_CLOCKING2,
WM8962_CLKREG_OVD, WM8962_CLKREG_OVD);
/* Ensure that the oscillator and PLLs are disabled */
regmap_update_bits(wm8962->regmap, WM8962_PLL2,
WM8962_OSC_ENA | WM8962_PLL2_ENA | WM8962_PLL3_ENA,
0);
regcache_sync(wm8962->regmap);
return 0;