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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2013-01-10 12:29:11 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-01-10 16:19:39 +0400
commitbbf1453e28e4e3ee2cf5a0c34a20469b4d465f0f (patch)
tree3a7c8aa256103d0b183c3da76cc00f583012c7af /sound/soc/codecs/ak4642.c
parent9931faca02c604c22335f5a935a501bb2ace6e20 (diff)
downloadlinux-bbf1453e28e4e3ee2cf5a0c34a20469b4d465f0f.tar.xz
ASoC: ak4642: add Device Tree support
Support for loading the ak4642 codec module via devicetree. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/ak4642.c')
-rw-r--r--sound/soc/codecs/ak4642.c33
1 files changed, 31 insertions, 2 deletions
diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
index 1f0cdab03294..c78794dc4b69 100644
--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/slab.h>
+#include <linux/of_device.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/initval.h>
@@ -513,12 +514,31 @@ static struct snd_soc_codec_driver soc_codec_dev_ak4648 = {
};
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+static struct of_device_id ak4642_of_match[];
static int ak4642_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
+ struct device_node *np = i2c->dev.of_node;
+ const struct snd_soc_codec_driver *driver;
+
+ driver = NULL;
+ if (np) {
+ const struct of_device_id *of_id;
+
+ of_id = of_match_device(ak4642_of_match, &i2c->dev);
+ if (of_id)
+ driver = of_id->data;
+ } else {
+ driver = (struct snd_soc_codec_driver *)id->driver_data;
+ }
+
+ if (!driver) {
+ dev_err(&i2c->dev, "no driver\n");
+ return -EINVAL;
+ }
+
return snd_soc_register_codec(&i2c->dev,
- (struct snd_soc_codec_driver *)id->driver_data,
- &ak4642_dai, 1);
+ driver, &ak4642_dai, 1);
}
static int ak4642_i2c_remove(struct i2c_client *client)
@@ -527,6 +547,14 @@ static int ak4642_i2c_remove(struct i2c_client *client)
return 0;
}
+static struct of_device_id ak4642_of_match[] __devinitconst = {
+ { .compatible = "asahi-kasei,ak4642", .data = &soc_codec_dev_ak4642},
+ { .compatible = "asahi-kasei,ak4643", .data = &soc_codec_dev_ak4642},
+ { .compatible = "asahi-kasei,ak4648", .data = &soc_codec_dev_ak4648},
+ {},
+};
+MODULE_DEVICE_TABLE(of, ak4642_of_match);
+
static const struct i2c_device_id ak4642_i2c_id[] = {
{ "ak4642", (kernel_ulong_t)&soc_codec_dev_ak4642 },
{ "ak4643", (kernel_ulong_t)&soc_codec_dev_ak4642 },
@@ -539,6 +567,7 @@ static struct i2c_driver ak4642_i2c_driver = {
.driver = {
.name = "ak4642-codec",
.owner = THIS_MODULE,
+ .of_match_table = ak4642_of_match,
},
.probe = ak4642_i2c_probe,
.remove = ak4642_i2c_remove,