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Commit f40dff9e authored by Mark Brown's avatar Mark Brown Committed by Samuel Ortiz
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mfd: Put WM8994 into reset when suspending 



Ensure that the chip is in the lowest power mode possible when suspended
by performing a soft reset on it. On early silicon revisions the lowest
power modes can't be entered without using reset so we can't achieve
equivalent results within the individual drivers.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent f66ea457

drivers/mfd/wm8994-core.c

+5 −0
Original line number Diff line number Diff line
@@ -271,6 +271,11 @@ static int wm8994_suspend(struct device *dev) 
	if (ret < 0)

		dev_err(dev, "Failed to save LDO registers: %d\n", ret);



	/* Explicitly put the device into reset in case regulators

	 * don't get disabled in order to ensure consistent restart.

	 */

	wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, 0x8994);



	wm8994->suspended = true;



	ret = regulator_bulk_disable(wm8994->num_supplies,