diff options
| author | Dan Murphy <dmurphy@ti.com> | 2020-09-23 08:25:56 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-09-23 18:48:01 +0100 |
| commit | 5d0b9dfe0de26b8c4242145cbf7de3a5a2e98293 (patch) | |
| tree | 4eb8492a0e659208c2f25f54ea953f1aea02ce90 /sound/soc/codecs/tas2770.c | |
| parent | 29d7b36ce98eb1bfba2c5c9b2ea0d58ff778a2d4 (diff) | |
ASoC: tas2770: Add shutdown capability via a GPIO
Add the hardware shutdown mechanism to shutdown and wake up the device
via a GPIO.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200923132600.10652-2-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/tas2770.c')
| -rw-r--r-- | sound/soc/codecs/tas2770.c | 53 |
1 files changed, 39 insertions, 14 deletions
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c index 386aaa11fa08..9f7363927c50 100644 --- a/sound/soc/codecs/tas2770.c +++ b/sound/soc/codecs/tas2770.c @@ -79,28 +79,42 @@ static int tas2770_set_bias_level(struct snd_soc_component *component, #ifdef CONFIG_PM static int tas2770_codec_suspend(struct snd_soc_component *component) { - int ret; + struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); + int ret = 0; - ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, - TAS2770_PWR_CTRL_MASK, - TAS2770_PWR_CTRL_SHUTDOWN); - if (ret < 0) - return ret; + if (tas2770->sdz_gpio) { + gpiod_set_value_cansleep(tas2770->sdz_gpio, 0); + } else { + ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, + TAS2770_PWR_CTRL_MASK, + TAS2770_PWR_CTRL_SHUTDOWN); + if (ret < 0) + return ret; - return 0; + ret = 0; + } + + return ret; } static int tas2770_codec_resume(struct snd_soc_component *component) { - int ret; + struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); + int ret = 0; - ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, - TAS2770_PWR_CTRL_MASK, - TAS2770_PWR_CTRL_ACTIVE); - if (ret < 0) - return ret; + if (tas2770->sdz_gpio) { + gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); + } else { + ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, + TAS2770_PWR_CTRL_MASK, + TAS2770_PWR_CTRL_ACTIVE); + if (ret < 0) + return ret; - return 0; + ret = 0; + } + + return ret; } #else #define tas2770_codec_suspend NULL @@ -498,6 +512,9 @@ static int tas2770_codec_probe(struct snd_soc_component *component) tas2770->component = component; + if (tas2770->sdz_gpio) + gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); + tas2770_reset(tas2770); return 0; @@ -650,6 +667,14 @@ static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770) tas2770->v_sense_slot = 2; } + tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); + if (IS_ERR(tas2770->sdz_gpio)) { + if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + tas2770->sdz_gpio = NULL; + } + return 0; } |