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ASoC: tas2770: Insert post reset delay

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commit 307f31452078792aab94a729fce33200c6e42dc4 upstream.

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

Fixes: 1a476abc72 ("tas2770: add tas2770 smart PA kernel driver")
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220204095301.5554-1-povik+lin@cutebit.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Povišer
2022-02-04 10:53:01 +01:00
committed by Greg Kroah-Hartman
parent 9dcedbe943
commit dc6faa0ede
1 changed files with 6 additions and 1 deletions
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7
sound/soc/codecs/tas2770.c
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@@ -38,10 +38,12 @@ static void tas2770_reset(struct tas2770_priv *tas2770)
gpiod_set_value_cansleep(tas2770->reset_gpio, 0); gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
msleep(20); msleep(20);
gpiod_set_value_cansleep(tas2770->reset_gpio, 1); gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
usleep_range(1000, 2000);
} }
snd_soc_component_write(tas2770->component, TAS2770_SW_RST, snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
TAS2770_RST); TAS2770_RST);
usleep_range(1000, 2000);
} }
static int tas2770_set_bias_level(struct snd_soc_component *component, 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) { if (tas2770->sdz_gpio) {
gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
usleep_range(1000, 2000);
} else { } else {
ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
TAS2770_PWR_CTRL_MASK, TAS2770_PWR_CTRL_MASK,
@@ -510,8 +513,10 @@ static int tas2770_codec_probe(struct snd_soc_component *component)
tas2770->component = component; tas2770->component = component;
if (tas2770->sdz_gpio) if (tas2770->sdz_gpio) {
gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
usleep_range(1000, 2000);
}
tas2770_reset(tas2770); tas2770_reset(tas2770);