diff options
| -rw-r--r-- | sound/soc/codecs/ak4104.c | 119 |
1 files changed, 44 insertions, 75 deletions
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c index 34a840c5d2b..ceb96ecf558 100644 --- a/sound/soc/codecs/ak4104.c +++ b/sound/soc/codecs/ak4104.c @@ -46,69 +46,15 @@ #define DRV_NAME "ak4104-codec" struct ak4104_private { - enum snd_soc_control_type control_type; - void *control_data; + struct regmap *regmap; }; -static int ak4104_fill_cache(struct snd_soc_codec *codec) -{ - int i; - u8 *reg_cache = codec->reg_cache; - struct spi_device *spi = codec->control_data; - - for (i = 0; i < codec->driver->reg_cache_size; i++) { - int ret = spi_w8r8(spi, i | AK4104_READ); - if (ret < 0) { - dev_err(&spi->dev, "SPI write failure\n"); - return ret; - } - - reg_cache[i] = ret; - } - - return 0; -} - -static unsigned int ak4104_read_reg_cache(struct snd_soc_codec *codec, - unsigned int reg) -{ - u8 *reg_cache = codec->reg_cache; - - if (reg >= codec->driver->reg_cache_size) - return -EINVAL; - - return reg_cache[reg]; -} - -static int ak4104_spi_write(struct snd_soc_codec *codec, unsigned int reg, - unsigned int value) -{ - u8 *cache = codec->reg_cache; - struct spi_device *spi = codec->control_data; - - if (reg >= codec->driver->reg_cache_size) - return -EINVAL; - - /* only write to the hardware if value has changed */ - if (cache[reg] != value) { - u8 tmp[2] = { (reg & AK4104_REG_MASK) | AK4104_WRITE, value }; - - if (spi_write(spi, tmp, sizeof(tmp))) { - dev_err(&spi->dev, "SPI write failed\n"); - return -EIO; - } - - cache[reg] = value; - } - - return 0; -} - static int ak4104_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { struct snd_soc_codec *codec = codec_dai->codec; int val = 0; + int ret; /* set DAI format */ switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { @@ -192,23 +138,12 @@ static struct snd_soc_dai_driver ak4104_dai = { static int ak4104_probe(struct snd_soc_codec *codec) { struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); - int ret, val; - - codec->control_data = ak4104->control_data; + int ret; - /* read all regs and fill the cache */ - ret = ak4104_fill_cache(codec); - if (ret < 0) { - dev_err(codec->dev, "failed to fill register cache\n"); + codec->control_data = ak4104->regmap; + ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP); + if (ret != 0) return ret; - } - - /* read the 'reserved' register - according to the datasheet, it - * should contain 0x5b. Not a good way to verify the presence of - * the device, but there is no hardware ID register. */ - if (ak4104_read_reg_cache(codec, AK4104_REG_RESERVED) != - AK4104_RESERVED_VAL) - return -ENODEV; /* set power-up and non-reset bits */ ret = snd_soc_update_bits(codec, AK4104_REG_CONTROL1, @@ -237,13 +172,23 @@ static int ak4104_remove(struct snd_soc_codec *codec) static struct snd_soc_codec_driver soc_codec_device_ak4104 = { .probe = ak4104_probe, .remove = ak4104_remove, - .reg_cache_size = AK4104_NUM_REGS, - .reg_word_size = sizeof(u8), +}; + +static const struct regmap_config ak4104_regmap = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = AK4104_NUM_REGS - 1, + .read_flag_mask = AK4104_READ, + .write_flag_mask = AK4104_WRITE, + + .cache_type = REGCACHE_RBTREE, }; static int ak4104_spi_probe(struct spi_device *spi) { struct ak4104_private *ak4104; + unsigned int val; int ret; spi->bits_per_word = 8; @@ -257,17 +202,41 @@ static int ak4104_spi_probe(struct spi_device *spi) if (ak4104 == NULL) return -ENOMEM; - ak4104->control_data = spi; - ak4104->control_type = SND_SOC_SPI; + ak4104->regmap = regmap_init_spi(spi, &ak4104_regmap); + if (IS_ERR(ak4104->regmap)) { + ret = PTR_ERR(ak4104->regmap); + return ret; + } + + /* read the 'reserved' register - according to the datasheet, it + * should contain 0x5b. Not a good way to verify the presence of + * the device, but there is no hardware ID register. */ + ret = regmap_read(ak4104->regmap, AK4104_REG_RESERVED, &val); + if (ret != 0) + goto err; + if (val != AK4104_RESERVED_VAL) { + ret = -ENODEV; + goto err; + } + spi_set_drvdata(spi, ak4104); ret = snd_soc_register_codec(&spi->dev, &soc_codec_device_ak4104, &ak4104_dai, 1); + if (ret != 0) + goto err; + + return 0; + +err: + regmap_exit(ak4104->regmap); return ret; } static int __devexit ak4104_spi_remove(struct spi_device *spi) { + struct ak4104_private *ak4101 = spi_get_drvdata(spi); + regmap_exit(ak4101->regmap); snd_soc_unregister_codec(&spi->dev); return 0; } |