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Commit f3799e93 authored by Mark Brown's avatar Mark Brown Committed by Samuel Ortiz
Browse files

mfd: wm8994: Reset device during probe 



Ensure that the device is in a known good state. This should have little
practical impact as the runtime PM will reset the device shortly after
probe but it's neater.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 1ee5d8c8

drivers/mfd/wm8994-core.c

+11 −0
Original line number Diff line number Diff line
@@ -652,6 +652,17 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) 
		return ret;

	}



	/* Explicitly put the device into reset in case regulators

	 * don't get disabled in order to ensure we know the device

	 * state.

	 */

	ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,

			       wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));

	if (ret != 0) {

		dev_err(wm8994->dev, "Failed to reset device: %d\n", ret);

		return ret;

	}



	if (regmap_patch) {

		ret = regmap_register_patch(wm8994->regmap, regmap_patch,

					    patch_regs);