ASoC: cs42l73: Add Device Tree support for CS42L73
This patch adds support for device tree for the CS42L73 CODEC
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/cs42l73.c b/sound/soc/codecs/cs42l73.c
index 89efc3c..549d5d6 100644
--- a/sound/soc/codecs/cs42l73.c
+++ b/sound/soc/codecs/cs42l73.c
@@ -17,7 +17,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
@@ -1416,6 +1416,7 @@
int ret;
unsigned int devid = 0;
unsigned int reg;
+ u32 val32;
cs42l73 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs42l73_private),
GFP_KERNEL);
@@ -1431,8 +1432,25 @@
return ret;
}
- if (pdata)
+ if (pdata) {
cs42l73->pdata = *pdata;
+ } else {
+ pdata = devm_kzalloc(&i2c_client->dev,
+ sizeof(struct cs42l73_platform_data),
+ GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&i2c_client->dev, "could not allocate pdata\n");
+ return -ENOMEM;
+ }
+ if (i2c_client->dev.of_node) {
+ if (of_property_read_u32(i2c_client->dev.of_node,
+ "chgfreq", &val32) >= 0)
+ pdata->chgfreq = val32;
+ }
+ pdata->reset_gpio = of_get_named_gpio(i2c_client->dev.of_node,
+ "reset-gpio", 0);
+ cs42l73->pdata = *pdata;
+ }
i2c_set_clientdata(i2c_client, cs42l73);
@@ -1493,6 +1511,12 @@
return 0;
}
+static const struct of_device_id cs42l73_of_match[] = {
+ { .compatible = "cirrus,cs42l73", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, cs42l73_of_match);
+
static const struct i2c_device_id cs42l73_id[] = {
{"cs42l73", 0},
{}
@@ -1504,6 +1528,7 @@
.driver = {
.name = "cs42l73",
.owner = THIS_MODULE,
+ .of_match_table = cs42l73_of_match,
},
.id_table = cs42l73_id,
.probe = cs42l73_i2c_probe,