diff options
| -rw-r--r-- | Documentation/devicetree/bindings/sound/pcm512x.txt | 9 | ||||
| -rw-r--r-- | sound/soc/codecs/pcm512x-i2c.c | 4 | ||||
| -rw-r--r-- | sound/soc/codecs/pcm512x.c | 36 |
3 files changed, 42 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/sound/pcm512x.txt b/Documentation/devicetree/bindings/sound/pcm512x.txt index 3aae3b41bd8e..77006a4aec4a 100644 --- a/Documentation/devicetree/bindings/sound/pcm512x.txt +++ b/Documentation/devicetree/bindings/sound/pcm512x.txt @@ -1,12 +1,12 @@ -PCM512x audio CODECs +PCM512x and TAS575x audio CODECs/amplifiers These devices support both I2C and SPI (configured with pin strapping -on the board). +on the board). The TAS575x devices only support I2C. Required properties: - - compatible : One of "ti,pcm5121", "ti,pcm5122", "ti,pcm5141" or - "ti,pcm5142" + - compatible : One of "ti,pcm5121", "ti,pcm5122", "ti,pcm5141", + "ti,pcm5142", "ti,tas5754" or "ti,tas5756" - reg : the I2C address of the device for I2C, the chip select number for SPI. @@ -25,6 +25,7 @@ Optional properties: through <6>. The device will be configured for clock input on the given pll-in pin and PLL output on the given pll-out pin. An external connection from the pll-out pin to the SCLK pin is assumed. + Caution: the TAS-desvices only support gpios 1,2 and 3 Examples: diff --git a/sound/soc/codecs/pcm512x-i2c.c b/sound/soc/codecs/pcm512x-i2c.c index 5cd2b64b9337..4be476a280e1 100644 --- a/sound/soc/codecs/pcm512x-i2c.c +++ b/sound/soc/codecs/pcm512x-i2c.c @@ -39,6 +39,8 @@ static const struct i2c_device_id pcm512x_i2c_id[] = { { "pcm5122", }, { "pcm5141", }, { "pcm5142", }, + { "tas5754", }, + { "tas5756", }, { } }; MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id); @@ -49,6 +51,8 @@ static const struct of_device_id pcm512x_of_match[] = { { .compatible = "ti,pcm5122", }, { .compatible = "ti,pcm5141", }, { .compatible = "ti,pcm5142", }, + { .compatible = "ti,tas5754", }, + { .compatible = "ti,tas5756", }, { } }; MODULE_DEVICE_TABLE(of, pcm512x_of_match); diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c index 89059a673cf0..aa8edf87b743 100644 --- a/sound/soc/codecs/pcm512x.c +++ b/sound/soc/codecs/pcm512x.c @@ -48,6 +48,7 @@ struct pcm512x_priv { int mute; struct mutex mutex; unsigned int bclk_ratio; + int force_pll_on; }; /* @@ -1258,10 +1259,34 @@ static int pcm512x_hw_params(struct snd_pcm_substream *substream, return ret; } - ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN, - PCM512x_PLLE, 0); + if (!pcm512x->force_pll_on) { + ret = regmap_update_bits(pcm512x->regmap, + PCM512x_PLL_EN, PCM512x_PLLE, 0); + } else { + /* provide minimum PLL config for TAS575x clocking + * and leave PLL enabled + */ + ret = regmap_write(pcm512x->regmap, + PCM512x_PLL_COEFF_0, 0x01); + if (ret != 0) { + dev_err(component->dev, + "Failed to set pll coefficient: %d\n", ret); + return ret; + } + ret = regmap_write(pcm512x->regmap, + PCM512x_PLL_COEFF_1, 0x04); + if (ret != 0) { + dev_err(component->dev, + "Failed to set pll coefficient: %d\n", ret); + return ret; + } + ret = regmap_write(pcm512x->regmap, + PCM512x_PLL_EN, 0x01); + dev_dbg(component->dev, "Enabling PLL for TAS575x\n"); + } + if (ret != 0) { - dev_err(component->dev, "Failed to disable pll: %d\n", ret); + dev_err(component->dev, "Failed to set pll mode: %d\n", ret); return ret; } } @@ -1659,6 +1684,11 @@ int pcm512x_probe(struct device *dev, struct regmap *regmap) ret = -EINVAL; goto err_pm; } + + if (!strcmp(np->name, "tas5756") || + !strcmp(np->name, "tas5754")) + pcm512x->force_pll_on = 1; + dev_dbg(dev, "Device ID: %s\n", np->name); } #endif |