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

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
...@@ -652,6 +652,17 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) ...@@ -652,6 +652,17 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
return ret; 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) { if (regmap_patch) {
ret = regmap_register_patch(wm8994->regmap, regmap_patch, ret = regmap_register_patch(wm8994->regmap, regmap_patch,
patch_regs); patch_regs);
......
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