ASoC: cs42l52: Add devicetree support for CS42L52
This patch adds device tree support for the CS42L52 Codec
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c
index 78d2dd6..4a47a63 100644
--- a/sound/soc/codecs/cs42l52.c
+++ b/sound/soc/codecs/cs42l52.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/input.h>
@@ -1193,6 +1193,7 @@
int ret;
unsigned int devid = 0;
unsigned int reg;
+ u32 val32;
cs42l52 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs42l52_private),
GFP_KERNEL);
@@ -1206,9 +1207,39 @@
dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
return ret;
}
-
- if (pdata)
+ if (pdata) {
cs42l52->pdata = *pdata;
+ } else {
+ pdata = devm_kzalloc(&i2c_client->dev,
+ sizeof(struct cs42l52_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_bool(i2c_client->dev.of_node,
+ "cirrus,mica-differential-cfg"))
+ pdata->mica_diff_cfg = true;
+
+ if (of_property_read_bool(i2c_client->dev.of_node,
+ "cirrus,micb-differential-cfg"))
+ pdata->micb_diff_cfg = true;
+
+ if (of_property_read_u32(i2c_client->dev.of_node,
+ "cirrus,micbias-lvl", &val32) >= 0)
+ pdata->micbias_lvl = val32;
+
+ if (of_property_read_u32(i2c_client->dev.of_node,
+ "cirrus,chgfreq-divisor", &val32) >= 0)
+ pdata->chgfreq_divisor = val32;
+
+ pdata->reset_gpio =
+ of_get_named_gpio(i2c_client->dev.of_node,
+ "cirrus,reset-gpio", 0);
+ }
+ cs42l52->pdata = *pdata;
+ }
if (cs42l52->pdata.reset_gpio) {
ret = gpio_request_one(cs42l52->pdata.reset_gpio,
@@ -1280,6 +1311,13 @@
return 0;
}
+static const struct of_device_id cs42l52_of_match[] = {
+ { .compatible = "cirrus,cs42l52", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, cs42l52_of_match);
+
+
static const struct i2c_device_id cs42l52_id[] = {
{ "cs42l52", 0 },
{ }
@@ -1290,6 +1328,7 @@
.driver = {
.name = "cs42l52",
.owner = THIS_MODULE,
+ .of_match_table = cs42l52_of_match,
},
.id_table = cs42l52_id,
.probe = cs42l52_i2c_probe,