diff options
Diffstat (limited to 'sound/soc/codecs/ak4104.c')
| -rw-r--r-- | sound/soc/codecs/ak4104.c | 107 |
1 files changed, 78 insertions, 29 deletions
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c index c7cfdf957e4..1fd7f72b2a6 100644 --- a/sound/soc/codecs/ak4104.c +++ b/sound/soc/codecs/ak4104.c @@ -11,13 +11,14 @@ #include <linux/module.h> #include <linux/slab.h> -#include <sound/core.h> -#include <sound/soc.h> -#include <sound/initval.h> #include <linux/spi/spi.h> #include <linux/of_device.h> #include <linux/of_gpio.h> +#include <linux/regulator/consumer.h> #include <sound/asoundef.h> +#include <sound/core.h> +#include <sound/soc.h> +#include <sound/initval.h> /* AK4104 registers addresses */ #define AK4104_REG_CONTROL1 0x00 @@ -45,10 +46,20 @@ #define AK4104_TX_TXE (1 << 0) #define AK4104_TX_V (1 << 1) -#define DRV_NAME "ak4104-codec" - struct ak4104_private { struct regmap *regmap; + struct regulator *regulator; +}; + +static const struct snd_soc_dapm_widget ak4104_dapm_widgets[] = { +SND_SOC_DAPM_PGA("TXE", AK4104_REG_TX, AK4104_TX_TXE, 0, NULL, 0), + +SND_SOC_DAPM_OUTPUT("TX"), +}; + +static const struct snd_soc_dapm_route ak4104_dapm_routes[] = { + { "TXE", NULL, "Playback" }, + { "TX", NULL, "TXE" }, }; static int ak4104_set_dai_fmt(struct snd_soc_dai *codec_dai, @@ -138,29 +149,11 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, if (ret < 0) return ret; - /* enable transmitter */ - ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX, - AK4104_TX_TXE, AK4104_TX_TXE); - if (ret < 0) - return ret; - return 0; } -static int ak4104_hw_free(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) -{ - struct snd_soc_codec *codec = dai->codec; - struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); - - /* disable transmitter */ - return regmap_update_bits(ak4104->regmap, AK4104_REG_TX, - AK4104_TX_TXE, 0); -} - static const struct snd_soc_dai_ops ak4101_dai_ops = { .hw_params = ak4104_hw_params, - .hw_free = ak4104_hw_free, .set_fmt = ak4104_set_dai_fmt, }; @@ -183,22 +176,30 @@ static int ak4104_probe(struct snd_soc_codec *codec) struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); int ret; - codec->control_data = ak4104->regmap; + ret = regulator_enable(ak4104->regulator); + if (ret < 0) { + dev_err(codec->dev, "Unable to enable regulator: %d\n", ret); + return ret; + } /* set power-up and non-reset bits */ ret = regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1, AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN, AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN); if (ret < 0) - return ret; + goto exit_disable_regulator; /* enable transmitter */ ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX, AK4104_TX_TXE, AK4104_TX_TXE); if (ret < 0) - return ret; + goto exit_disable_regulator; return 0; + +exit_disable_regulator: + regulator_disable(ak4104->regulator); + return ret; } static int ak4104_remove(struct snd_soc_codec *codec) @@ -207,13 +208,47 @@ static int ak4104_remove(struct snd_soc_codec *codec) regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1, AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN, 0); + regulator_disable(ak4104->regulator); return 0; } +#ifdef CONFIG_PM +static int ak4104_soc_suspend(struct snd_soc_codec *codec) +{ + struct ak4104_private *priv = snd_soc_codec_get_drvdata(codec); + + regulator_disable(priv->regulator); + + return 0; +} + +static int ak4104_soc_resume(struct snd_soc_codec *codec) +{ + struct ak4104_private *priv = snd_soc_codec_get_drvdata(codec); + int ret; + + ret = regulator_enable(priv->regulator); + if (ret < 0) + return ret; + + return 0; +} +#else +#define ak4104_soc_suspend NULL +#define ak4104_soc_resume NULL +#endif /* CONFIG_PM */ + static struct snd_soc_codec_driver soc_codec_device_ak4104 = { - .probe = ak4104_probe, - .remove = ak4104_remove, + .probe = ak4104_probe, + .remove = ak4104_remove, + .suspend = ak4104_soc_suspend, + .resume = ak4104_soc_resume, + + .dapm_widgets = ak4104_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ak4104_dapm_widgets), + .dapm_routes = ak4104_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(ak4104_dapm_routes), }; static const struct regmap_config ak4104_regmap = { @@ -245,6 +280,13 @@ static int ak4104_spi_probe(struct spi_device *spi) if (ak4104 == NULL) return -ENOMEM; + ak4104->regulator = devm_regulator_get(&spi->dev, "vdd"); + if (IS_ERR(ak4104->regulator)) { + ret = PTR_ERR(ak4104->regulator); + dev_err(&spi->dev, "Unable to get Vdd regulator: %d\n", ret); + return ret; + } + ak4104->regmap = devm_regmap_init_spi(spi, &ak4104_regmap); if (IS_ERR(ak4104->regmap)) { ret = PTR_ERR(ak4104->regmap); @@ -293,12 +335,19 @@ static const struct of_device_id ak4104_of_match[] = { }; MODULE_DEVICE_TABLE(of, ak4104_of_match); +static const struct spi_device_id ak4104_id_table[] = { + { "ak4104", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, ak4104_id_table); + static struct spi_driver ak4104_spi_driver = { .driver = { - .name = DRV_NAME, + .name = "ak4104", .owner = THIS_MODULE, .of_match_table = ak4104_of_match, }, + .id_table = ak4104_id_table, .probe = ak4104_spi_probe, .remove = ak4104_spi_remove, }; |