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ASoC: cs42l52: Add platform data for reset gpio

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This patch adds platform data support for a reset GPIO.
Also uses reset_gpio to toggle reset of the CODEC

Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Brian Austin 2013-10-25 10:01:14 -05:00 committed by Mark Brown
parent 31d141e3a6
commit 6dd1775792
2 changed files with 19 additions and 4 deletions
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2
include/sound/cs42l52.h
View File

@ -31,6 +31,8 @@ struct cs42l52_platform_data {
/* Charge Pump Freq. Check datasheet Pg73 */ /* Charge Pump Freq. Check datasheet Pg73 */
unsigned int chgfreq; unsigned int chgfreq;
/* Reset GPIO */
unsigned int reset_gpio;
}; };
#endif /* __CS42L52_H */ #endif /* __CS42L52_H */

21
sound/soc/codecs/cs42l52.c
View File

@ -17,6 +17,7 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/pm.h> #include <linux/pm.h>
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/input.h> #include <linux/input.h>
@ -1205,6 +1206,7 @@ static int cs42l52_i2c_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id) const struct i2c_device_id *id)
{ {
struct cs42l52_private *cs42l52; struct cs42l52_private *cs42l52;
struct cs42l52_platform_data *pdata = dev_get_platdata(&i2c_client->dev);
int ret; int ret;
unsigned int devid = 0; unsigned int devid = 0;
unsigned int reg; unsigned int reg;
@ -1222,11 +1224,22 @@ static int cs42l52_i2c_probe(struct i2c_client *i2c_client,
return ret; return ret;
} }
i2c_set_clientdata(i2c_client, cs42l52); if (pdata)
cs42l52->pdata = *pdata;
if (dev_get_platdata(&i2c_client->dev)) if (cs42l52->pdata.reset_gpio) {
memcpy(&cs42l52->pdata, dev_get_platdata(&i2c_client->dev), ret = gpio_request_one(cs42l52->pdata.reset_gpio,
sizeof(cs42l52->pdata)); GPIOF_OUT_INIT_HIGH, "CS42L52 /RST");
if (ret < 0) {
dev_err(&i2c_client->dev, "Failed to request /RST %d: %d\n",
cs42l52->pdata.reset_gpio, ret);
return ret;
}
gpio_set_value_cansleep(cs42l52->pdata.reset_gpio, 0);
gpio_set_value_cansleep(cs42l52->pdata.reset_gpio, 1);
}
i2c_set_clientdata(i2c_client, cs42l52);
ret = regmap_register_patch(cs42l52->regmap, cs42l52_threshold_patch, ret = regmap_register_patch(cs42l52->regmap, cs42l52_threshold_patch,
ARRAY_SIZE(cs42l52_threshold_patch)); ARRAY_SIZE(cs42l52_threshold_patch));