diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/ak4104.c | 65 |
1 files changed, 48 insertions, 17 deletions
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c index 31d4483..4b11b82 100644 --- a/sound/soc/codecs/ak4104.c +++ b/sound/soc/codecs/ak4104.c @@ -15,6 +15,8 @@ #include <sound/soc.h> #include <sound/initval.h> #include <linux/spi/spi.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> #include <sound/asoundef.h> /* AK4104 registers addresses */ @@ -98,14 +100,32 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, val = 0; switch (params_rate(params)) { + case 22050: + val |= IEC958_AES3_CON_FS_22050; + break; + case 24000: + val |= IEC958_AES3_CON_FS_24000; + break; + case 32000: + val |= IEC958_AES3_CON_FS_32000; + break; case 44100: val |= IEC958_AES3_CON_FS_44100; break; case 48000: val |= IEC958_AES3_CON_FS_48000; break; - case 32000: - val |= IEC958_AES3_CON_FS_32000; + case 88200: + val |= IEC958_AES3_CON_FS_88200; + break; + case 96000: + val |= IEC958_AES3_CON_FS_96000; + break; + case 176400: + val |= IEC958_AES3_CON_FS_176400; + break; + case 192000: + val |= IEC958_AES3_CON_FS_192000; break; default: dev_err(codec->dev, "unsupported sampling rate\n"); @@ -186,6 +206,7 @@ static const struct regmap_config ak4104_regmap = { static int ak4104_spi_probe(struct spi_device *spi) { + struct device_node *np = spi->dev.of_node; struct ak4104_private *ak4104; unsigned int val; int ret; @@ -201,49 +222,59 @@ static int ak4104_spi_probe(struct spi_device *spi) if (ak4104 == NULL) return -ENOMEM; - ak4104->regmap = regmap_init_spi(spi, &ak4104_regmap); + ak4104->regmap = devm_regmap_init_spi(spi, &ak4104_regmap); if (IS_ERR(ak4104->regmap)) { ret = PTR_ERR(ak4104->regmap); return ret; } + if (np) { + enum of_gpio_flags flags; + int gpio = of_get_named_gpio_flags(np, "reset-gpio", 0, &flags); + + if (gpio_is_valid(gpio)) { + ret = devm_gpio_request_one(&spi->dev, gpio, + flags & OF_GPIO_ACTIVE_LOW ? + GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH, + "ak4104 reset"); + 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. */ ret = regmap_read(ak4104->regmap, AK4104_REG_RESERVED, &val); if (ret != 0) - goto err; - if (val != AK4104_RESERVED_VAL) { - ret = -ENODEV; - goto err; - } + return ret; + if (val != AK4104_RESERVED_VAL) + return -ENODEV; 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; } +static const struct of_device_id ak4104_of_match[] = { + { .compatible = "asahi-kasei,ak4104", }, + { } +}; +MODULE_DEVICE_TABLE(of, ak4104_of_match); + static struct spi_driver ak4104_spi_driver = { .driver = { .name = DRV_NAME, .owner = THIS_MODULE, + .of_match_table = ak4104_of_match, }, .probe = ak4104_spi_probe, .remove = __devexit_p(ak4104_spi_remove), |