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| author | Javier Martin <javier.martin@vista-silicon.com> | 2012-10-31 11:53:34 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-11-01 14:35:56 +0000 |
| commit | 1858fe97c87c33c4975e291ecbbd6c1a20315674 (patch) | |
| tree | 357738191450f4d437e97f15d5f567065c7a15e9 /sound | |
| parent | a405387c6825b1fc1956e22b10160b0f31536f3f (diff) | |
| download | linux-1858fe97c87c33c4975e291ecbbd6c1a20315674.tar.gz linux-1858fe97c87c33c4975e291ecbbd6c1a20315674.tar.bz2 linux-1858fe97c87c33c4975e291ecbbd6c1a20315674.zip | |
ASoC: tlv320aic32x4: Add rstn gpio to platform data.
Add the possibility to specify a gpio through platform data
so that a HW reset can be issued to the codec.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/tlv320aic32x4.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index d7d0e18f794c..e39e08d5d8e4 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -28,6 +28,7 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/pm.h> +#include <linux/gpio.h> #include <linux/i2c.h> #include <linux/cdev.h> #include <linux/slab.h> @@ -65,6 +66,7 @@ struct aic32x4_priv { u32 power_cfg; u32 micpga_routing; bool swapdacs; + int rstn_gpio; }; /* 0dB min, 1dB steps */ @@ -627,10 +629,20 @@ static int aic32x4_probe(struct snd_soc_codec *codec) { struct aic32x4_priv *aic32x4 = snd_soc_codec_get_drvdata(codec); u32 tmp_reg; + int ret; codec->hw_write = (hw_write_t) i2c_master_send; codec->control_data = aic32x4->control_data; + if (aic32x4->rstn_gpio >= 0) { + ret = devm_gpio_request_one(codec->dev, aic32x4->rstn_gpio, + GPIOF_OUT_INIT_LOW, "tlv320aic32x4 rstn"); + if (ret != 0) + return ret; + ndelay(10); + gpio_set_value(aic32x4->rstn_gpio, 1); + } + snd_soc_write(codec, AIC32X4_RESET, 0x01); /* Power platform configuration */ @@ -723,10 +735,12 @@ static __devinit int aic32x4_i2c_probe(struct i2c_client *i2c, aic32x4->power_cfg = pdata->power_cfg; aic32x4->swapdacs = pdata->swapdacs; aic32x4->micpga_routing = pdata->micpga_routing; + aic32x4->rstn_gpio = pdata->rstn_gpio; } else { aic32x4->power_cfg = 0; aic32x4->swapdacs = false; aic32x4->micpga_routing = 0; + aic32x4->rstn_gpio = -1; } ret = snd_soc_register_codec(&i2c->dev, |