diff options
| author | Anatol Pomozov <anatol.pomozov@gmail.com> | 2015-05-13 08:25:15 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-05-16 13:13:04 +0100 |
| commit | b3b10e99b73b5e079fdb9bdaa1dad43b53e330cd (patch) | |
| tree | 461ed87af7026aba64bdae36a00b011c65b074b2 /sound/soc/codecs/rt5677.c | |
| parent | 5220f7fb4954d8ca612ea77fb9bee6801c43d031 (diff) | |
ASoC: rt5677: Add reset-gpio dts option
It allows to configure codec's RESET pin gpio
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/rt5677.c')
| -rw-r--r-- | sound/soc/codecs/rt5677.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c index c73105e75c1a..aba00fd8dfc4 100644 --- a/sound/soc/codecs/rt5677.c +++ b/sound/soc/codecs/rt5677.c @@ -4763,6 +4763,8 @@ static int rt5677_remove(struct snd_soc_codec *codec) regmap_write(rt5677->regmap, RT5677_RESET, 0x10ec); if (gpio_is_valid(rt5677->pow_ldo2)) gpio_set_value_cansleep(rt5677->pow_ldo2, 0); + if (gpio_is_valid(rt5677->reset_pin)) + gpio_set_value_cansleep(rt5677->reset_pin, 0); return 0; } @@ -4778,6 +4780,8 @@ static int rt5677_suspend(struct snd_soc_codec *codec) if (gpio_is_valid(rt5677->pow_ldo2)) gpio_set_value_cansleep(rt5677->pow_ldo2, 0); + if (gpio_is_valid(rt5677->reset_pin)) + gpio_set_value_cansleep(rt5677->reset_pin, 0); } return 0; @@ -4788,10 +4792,13 @@ static int rt5677_resume(struct snd_soc_codec *codec) struct rt5677_priv *rt5677 = snd_soc_codec_get_drvdata(codec); if (!rt5677->dsp_vad_en) { - if (gpio_is_valid(rt5677->pow_ldo2)) { + if (gpio_is_valid(rt5677->pow_ldo2)) gpio_set_value_cansleep(rt5677->pow_ldo2, 1); + if (gpio_is_valid(rt5677->reset_pin)) + gpio_set_value_cansleep(rt5677->reset_pin, 1); + if (gpio_is_valid(rt5677->pow_ldo2) || + gpio_is_valid(rt5677->reset_pin)) msleep(10); - } regcache_cache_only(rt5677->regmap, false); regcache_sync(rt5677->regmap); @@ -5029,6 +5036,8 @@ static int rt5677_parse_dt(struct rt5677_priv *rt5677, struct device_node *np) rt5677->pow_ldo2 = of_get_named_gpio(np, "realtek,pow-ldo2-gpio", 0); + rt5677->reset_pin = of_get_named_gpio(np, + "realtek,reset-gpio", 0); /* * POW_LDO2 is optional (it may be statically tied on the board). @@ -5039,6 +5048,9 @@ static int rt5677_parse_dt(struct rt5677_priv *rt5677, struct device_node *np) if (!gpio_is_valid(rt5677->pow_ldo2) && (rt5677->pow_ldo2 != -ENOENT)) return rt5677->pow_ldo2; + if (!gpio_is_valid(rt5677->reset_pin) && + (rt5677->reset_pin != -ENOENT)) + return rt5677->reset_pin; of_property_read_u8_array(np, "realtek,gpio-config", rt5677->pdata.gpio_config, RT5677_GPIO_NUM); @@ -5140,6 +5152,7 @@ static int rt5677_i2c_probe(struct i2c_client *i2c, } } else { rt5677->pow_ldo2 = -EINVAL; + rt5677->reset_pin = -EINVAL; } if (gpio_is_valid(rt5677->pow_ldo2)) { @@ -5151,6 +5164,21 @@ static int rt5677_i2c_probe(struct i2c_client *i2c, rt5677->pow_ldo2, ret); return ret; } + } + + if (gpio_is_valid(rt5677->reset_pin)) { + ret = devm_gpio_request_one(&i2c->dev, rt5677->reset_pin, + GPIOF_OUT_INIT_HIGH, + "RT5677 RESET"); + if (ret < 0) { + dev_err(&i2c->dev, "Failed to request RESET %d: %d\n", + rt5677->reset_pin, ret); + return ret; + } + } + + if (gpio_is_valid(rt5677->pow_ldo2) || + gpio_is_valid(rt5677->reset_pin)) { /* Wait a while until I2C bus becomes available. The datasheet * does not specify the exact we should wait but startup * sequence mentiones at least a few milliseconds. |