diff options
| author | Richard Fitzgerald <rf@opensource.cirrus.com> | 2021-10-26 15:57:21 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-26 16:31:09 +0300 |
| commit | 6cb725b8a5cc7b9106d5d6dd5d2ca78c76913775 (patch) | |
| tree | 70faf3a317740d1d13a231cb300155a4535fbcd4 /sound/soc/codecs/cs42l42.c | |
| parent | 1198ff12cbdd5f42c032cba1d96ebc7af8024cf9 (diff) | |
| download | linux-6cb725b8a5cc7b9106d5d6dd5d2ca78c76913775.tar.xz | |
ASoC: cs42l42: Reset and power-down on remove() and failed probe()
Driver remove() should assert RESET and disable the supplies.
probe() fail was disabling supplies but it didn't assert reset or
put the codec into a power-down state.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211026125722.10220-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/cs42l42.c')
| -rw-r--r-- | sound/soc/codecs/cs42l42.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index a8fff274ec63..dc12842ee6e1 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -2067,7 +2067,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client, "reset", GPIOD_OUT_LOW); if (IS_ERR(cs42l42->reset_gpio)) { ret = PTR_ERR(cs42l42->reset_gpio); - goto err_disable; + goto err_disable_noreset; } if (cs42l42->reset_gpio) { @@ -2111,7 +2111,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client, ret = regmap_read(cs42l42->regmap, CS42L42_REVID, ®); if (ret < 0) { dev_err(&i2c_client->dev, "Get Revision ID failed\n"); - goto err_disable; + goto err_shutdown; } dev_info(&i2c_client->dev, @@ -2136,7 +2136,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client, ret = cs42l42_handle_device_data(&i2c_client->dev, cs42l42); if (ret != 0) - goto err_disable; + goto err_shutdown; /* Setup headset detection */ cs42l42_setup_hs_type_detect(cs42l42); @@ -2148,10 +2148,18 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client, ret = devm_snd_soc_register_component(&i2c_client->dev, &soc_component_dev_cs42l42, &cs42l42_dai, 1); if (ret < 0) - goto err_disable; + goto err_shutdown; + return 0; +err_shutdown: + regmap_write(cs42l42->regmap, CS42L42_CODEC_INT_MASK, 0xff); + regmap_write(cs42l42->regmap, CS42L42_TSRS_PLUG_INT_MASK, 0xff); + regmap_write(cs42l42->regmap, CS42L42_PWR_CTL1, 0xff); + err_disable: + gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); +err_disable_noreset: regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies); return ret; @@ -2164,6 +2172,14 @@ static int cs42l42_i2c_remove(struct i2c_client *i2c_client) if (i2c_client->irq) devm_free_irq(&i2c_client->dev, i2c_client->irq, cs42l42); + /* + * The driver might not have control of reset and power supplies, + * so ensure that the chip internals are powered down. + */ + regmap_write(cs42l42->regmap, CS42L42_CODEC_INT_MASK, 0xff); + regmap_write(cs42l42->regmap, CS42L42_TSRS_PLUG_INT_MASK, 0xff); + regmap_write(cs42l42->regmap, CS42L42_PWR_CTL1, 0xff); + gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies); |