ALSA: ASoC: add DT bindings for CS4271
Apart from pure matching, the bindings also support setting the the
reset gpio line.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: Alexander Sverdlin <subaparts@yandex.ru>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c
index 9eb01d7..f994af3 100644
--- a/sound/soc/codecs/cs4271.c
+++ b/sound/soc/codecs/cs4271.c
@@ -22,12 +22,14 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <sound/tlv.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
#include <sound/cs4271.h>
#define CS4271_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
@@ -458,6 +460,14 @@
#define cs4271_soc_resume NULL
#endif /* CONFIG_PM */
+#ifdef CONFIG_OF
+static const struct of_device_id cs4271_dt_ids[] = {
+ { .compatible = "cirrus,cs4271", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, cs4271_dt_ids);
+#endif
+
static int cs4271_probe(struct snd_soc_codec *codec)
{
struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
@@ -465,6 +475,12 @@
int ret;
int gpio_nreset = -EINVAL;
+#ifdef CONFIG_OF
+ if (of_match_device(cs4271_dt_ids, codec->dev))
+ gpio_nreset = of_get_named_gpio(codec->dev->of_node,
+ "reset-gpio", 0);
+#endif
+
if (cs4271plat && gpio_is_valid(cs4271plat->gpio_nreset))
gpio_nreset = cs4271plat->gpio_nreset;
@@ -569,6 +585,7 @@
.driver = {
.name = "cs4271",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(cs4271_dt_ids),
},
.probe = cs4271_spi_probe,
.remove = __devexit_p(cs4271_spi_remove),
@@ -608,6 +625,7 @@
.driver = {
.name = "cs4271",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(cs4271_dt_ids),
},
.id_table = cs4271_i2c_id,
.probe = cs4271_i2c_probe,