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ASoC: tlv320aic32x4: Add rstn gpio to platform data. 

Add the possibility to specify a gpio through platform data
so that a HW reset can be issued to the codec.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Javier Martin 2012-10-31 11:53:34 +01:00 committed by Mark Brown
parent a405387c68
commit 1858fe97c8
2 changed files with 15 additions and 0 deletions
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1
include/sound/tlv320aic32x4.h
View File

@ -26,6 +26,7 @@ struct aic32x4_pdata {
u32 power_cfg;
u32 micpga_routing;
bool swapdacs;
int rstn_gpio;
};
#endif

14
sound/soc/codecs/tlv320aic32x4.c
View File

@ -28,6 +28,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/cdev.h>
#include <linux/slab.h>
@ -65,6 +66,7 @@ struct aic32x4_priv {
u32 power_cfg;
u32 micpga_routing;
bool swapdacs;
int rstn_gpio;
};
/* 0dB min, 1dB steps */
@ -627,10 +629,20 @@ static int aic32x4_probe(struct snd_soc_codec *codec)
{
struct aic32x4_priv *aic32x4 = snd_soc_codec_get_drvdata(codec);
u32 tmp_reg;
int ret;
codec->hw_write = (hw_write_t) i2c_master_send;
codec->control_data = aic32x4->control_data;
if (aic32x4->rstn_gpio >= 0) {
ret = devm_gpio_request_one(codec->dev, aic32x4->rstn_gpio,
GPIOF_OUT_INIT_LOW, "tlv320aic32x4 rstn");
if (ret != 0)
return ret;
ndelay(10);
gpio_set_value(aic32x4->rstn_gpio, 1);
}
snd_soc_write(codec, AIC32X4_RESET, 0x01);
/* Power platform configuration */
@ -723,10 +735,12 @@ static __devinit int aic32x4_i2c_probe(struct i2c_client *i2c,
aic32x4->power_cfg = pdata->power_cfg;
aic32x4->swapdacs = pdata->swapdacs;
aic32x4->micpga_routing = pdata->micpga_routing;
aic32x4->rstn_gpio = pdata->rstn_gpio;
} else {
aic32x4->power_cfg = 0;
aic32x4->swapdacs = false;
aic32x4->micpga_routing = 0;
aic32x4->rstn_gpio = -1;
}
ret = snd_soc_register_codec(&i2c->dev,