summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/ak4104.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/codecs/ak4104.c')
-rw-r--r--sound/soc/codecs/ak4104.c65
1 files changed, 48 insertions, 17 deletions
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c
index 31d4483245d..4b11b82b227 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),