Unverified Commit 307f3145 authored by Martin Povišer's avatar Martin Povišer Committed by Mark Brown
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ASoC: tas2770: Insert post reset delay 



Per TAS2770 datasheet there must be a 1 ms delay from reset to first
command. So insert delays into the driver where appropriate.

Fixes: 1a476abc ("tas2770: add tas2770 smart PA kernel driver")
Signed-off-by: default avatarMartin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220204095301.5554-1-povik+lin@cutebit.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 946eb871

sound/soc/codecs/tas2770.c

+6 −1
Original line number Diff line number Diff line
@@ -38,10 +38,12 @@ static void tas2770_reset(struct tas2770_priv *tas2770) 
		gpiod_set_value_cansleep(tas2770->reset_gpio, 0);

		msleep(20);

		gpiod_set_value_cansleep(tas2770->reset_gpio, 1);

		usleep_range(1000, 2000);

	}



	snd_soc_component_write(tas2770->component, TAS2770_SW_RST,

		TAS2770_RST);

	usleep_range(1000, 2000);

}



static int tas2770_set_bias_level(struct snd_soc_component *component,
@@ -110,6 +112,7 @@ static int tas2770_codec_resume(struct snd_soc_component *component) 


	if (tas2770->sdz_gpio) {

		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);

		usleep_range(1000, 2000);

	} else {

		ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,

						    TAS2770_PWR_CTRL_MASK,
@@ -510,8 +513,10 @@ static int tas2770_codec_probe(struct snd_soc_component *component) 


	tas2770->component = component;



	if (tas2770->sdz_gpio)

	if (tas2770->sdz_gpio) {

		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);

		usleep_range(1000, 2000);

	}



	tas2770_reset(tas2770);