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Commit 5712ded9 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown
Browse files

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: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent e04d6e55

sound/soc/codecs/twl4030.c

+31 −13
Original line number Diff line number Diff line
@@ -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)
@@ -348,8 +353,8 @@ 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)) {

	if (pdata && pdata->hs_extmute) {

		if (gpio_is_valid(pdata->hs_extmute_gpio)) {

			int ret;



			if (!pdata->hs_extmute_gpio)
@@ -357,11 +362,24 @@ static void twl4030_init_chip(struct snd_soc_codec *codec) 
					"Extmute GPIO is 0 is this correct?\n");



			ret = gpio_request_one(pdata->hs_extmute_gpio,

				       GPIOF_OUT_INIT_LOW, "hs_extmute");

					       GPIOF_OUT_INIT_LOW,

					       "hs_extmute");

			if (ret) {

			dev_err(codec->dev, "Failed to get hs_extmute GPIO\n");

				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);

		}

	}



	/* Check defaults, if instructed before anything else */