diff options
Diffstat (limited to 'sound/soc/codecs/sta32x.c')
| -rw-r--r-- | sound/soc/codecs/sta32x.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c index 4517453b33b6..ae9283781bb6 100644 --- a/sound/soc/codecs/sta32x.c +++ b/sound/soc/codecs/sta32x.c @@ -26,6 +26,7 @@ #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> +#include <linux/gpio/consumer.h> #include <linux/slab.h> #include <linux/workqueue.h> #include <sound/core.h> @@ -151,6 +152,7 @@ struct sta32x_priv { u32 coef_shadow[STA32X_COEF_COUNT]; struct delayed_work watchdog_work; int shutdown; + struct gpio_desc *gpiod_nreset; struct mutex coeff_lock; }; @@ -804,6 +806,16 @@ static int sta32x_hw_params(struct snd_pcm_substream *substream, return 0; } + +static int sta32x_startup_sequence(struct sta32x_priv *sta32x) +{ + if (sta32x->gpiod_nreset) { + gpiod_set_value(sta32x->gpiod_nreset, 0); + mdelay(1); + gpiod_set_value(sta32x->gpiod_nreset, 1); + mdelay(1); + } + return 0; } @@ -844,6 +856,7 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec, return ret; } + sta32x_startup_sequence(sta32x); sta32x_cache_sync(codec); sta32x_watchdog_start(sta32x); } @@ -861,6 +874,10 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec, STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 0); msleep(300); sta32x_watchdog_stop(sta32x); + + if (sta32x->gpiod_nreset) + gpiod_set_value(sta32x->gpiod_nreset, 0); + regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); break; @@ -899,6 +916,11 @@ static int sta32x_probe(struct snd_soc_codec *codec) return ret; } + ret = sta32x_startup_sequence(sta32x); + if (ret < 0) { + dev_err(codec->dev, "Failed to startup device\n"); + return ret; + } /* set thermal warning adjustment and recovery */ if (!pdata->thermal_warning_recovery) thermal |= STA32X_CONFA_TWAB; @@ -999,6 +1021,19 @@ static int sta32x_i2c_probe(struct i2c_client *i2c, mutex_init(&sta32x->coeff_lock); sta32x->pdata = dev_get_platdata(dev); + + /* GPIOs */ + sta32x->gpiod_nreset = devm_gpiod_get(dev, "reset"); + if (IS_ERR(sta32x->gpiod_nreset)) { + ret = PTR_ERR(sta32x->gpiod_nreset); + if (ret != -ENOENT && ret != -ENOSYS) + return ret; + + sta32x->gpiod_nreset = NULL; + } else { + gpiod_direction_output(sta32x->gpiod_nreset, 0); + } + /* regulators */ for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++) sta32x->supplies[i].supply = sta32x_supply_names[i]; |