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Commit 6dd17757 authored by Brian Austin's avatar Brian Austin Committed by Mark Brown
Browse files

ASoC: cs42l52: Add platform data for reset gpio 



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

Signed-off-by: default avatarBrian Austin <brian.austin@cirrus.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 31d141e3

include/sound/cs42l52.h

+2 −0
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ struct cs42l52_platform_data { 
	/* Charge Pump Freq. Check datasheet Pg73 */

	unsigned int chgfreq;



	/* Reset GPIO */

	unsigned int reset_gpio;

};



#endif /* __CS42L52_H */

sound/soc/codecs/cs42l52.c

+17 −4
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/pm.h>

#include <linux/i2c.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)

{

	struct cs42l52_private *cs42l52;

	struct cs42l52_platform_data *pdata = dev_get_platdata(&i2c_client->dev);

	int ret;

	unsigned int devid = 0;

	unsigned int reg;
@@ -1222,11 +1224,22 @@ static int cs42l52_i2c_probe(struct i2c_client *i2c_client, 
		return ret;

	}



	i2c_set_clientdata(i2c_client, cs42l52);

	if (pdata)

		cs42l52->pdata = *pdata;



	if (dev_get_platdata(&i2c_client->dev))

		memcpy(&cs42l52->pdata, dev_get_platdata(&i2c_client->dev),

		       sizeof(cs42l52->pdata));

	if (cs42l52->pdata.reset_gpio) {

		ret = gpio_request_one(cs42l52->pdata.reset_gpio,

				       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,

				    ARRAY_SIZE(cs42l52_threshold_patch));