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ASoC: twl4030: Configure extmute pinmux when the dedicated pin is in use 

When HS extmute is enabled without custom GPIO we should configure the mux
to allow the pin to be used as extmute signal.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Peter Ujfalusi 2012-12-31 11:51:46 +01:00 committed by Mark Brown
parent e04d6e55fe
commit 5712ded9cf
1 changed files with 29 additions and 11 deletions
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40
sound/soc/codecs/twl4030.c
View File

@ -41,6 +41,11 @@
/* Register descriptions are here */
#include <linux/mfd/twl4030-audio.h>
/* TWL4030 PMBR1 Register */
#define TWL4030_PMBR1_REG 0x0D
/* TWL4030 PMBR1 Register GPIO6 mux bits */
#define TWL4030_GPIO6_PWM0_MUTE(value) ((value & 0x03) << 2)
/* Shadow register used by the audio driver */
#define TWL4030_REG_SW_SHADOW 0x4A
#define TWL4030_CACHEREGNUM (TWL4030_REG_SW_SHADOW + 1)
@ -348,19 +353,32 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
pdata = twl4030_get_pdata(codec);
if (pdata && pdata->hs_extmute &&
gpio_is_valid(pdata->hs_extmute_gpio)) {
int ret;
if (pdata && pdata->hs_extmute) {
if (gpio_is_valid(pdata->hs_extmute_gpio)) {
int ret;
if (!pdata->hs_extmute_gpio)
dev_warn(codec->dev,
"Extmute GPIO is 0 is this correct?\n");
if (!pdata->hs_extmute_gpio)
dev_warn(codec->dev,
"Extmute GPIO is 0 is this correct?\n");
ret = gpio_request_one(pdata->hs_extmute_gpio,
GPIOF_OUT_INIT_LOW, "hs_extmute");
if (ret) {
dev_err(codec->dev, "Failed to get hs_extmute GPIO\n");
pdata->hs_extmute_gpio = -1;
ret = gpio_request_one(pdata->hs_extmute_gpio,
GPIOF_OUT_INIT_LOW,
"hs_extmute");
if (ret) {
dev_err(codec->dev,
"Failed to get hs_extmute GPIO\n");
pdata->hs_extmute_gpio = -1;
}
} else {
u8 pin_mux;
/* Set TWL4030 GPIO6 as EXTMUTE signal */
twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
TWL4030_PMBR1_REG);
pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
TWL4030_PMBR1_REG);
}
}