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ASoC: SDP3430: Add support for EXTMUTE using TWL GPIO6 

Board sdp3430 has hardware support for EXTMUTE using TWL4030 GPIO6
line, controlled by register INTBR_PMBR1. Machine driver takes care
of enabling gpio line through i2c and codec driver manipulates the
line during headset ramp up/down sequence.

Signed-off-by: Jorge Eduardo Candelaria <x0107209@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Candelaria Villareal, Jorge 2009-07-14 20:04:08 -05:00 committed by Mark Brown
parent 416c8fe3cd
commit c5910a7038
1 changed files with 9 additions and 0 deletions
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9
sound/soc/omap/sdp3430.c
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@ -24,6 +24,7 @@
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl4030.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
@ -39,6 +40,9 @@
#include "omap-pcm.h"
#include "../codecs/twl4030.h"
#define TWL4030_INTBR_PMBR1 0x0D
#define EXTMUTE(value) (value << 2)
static struct snd_soc_card snd_soc_sdp3430;
static int sdp3430_hw_params(struct snd_pcm_substream *substream,
@ -280,6 +284,7 @@ static struct snd_soc_card snd_soc_sdp3430 = {
static struct twl4030_setup_data twl4030_setup = {
.ramp_delay_value = 3,
.sysclk = 26000,
.hs_extmute = 1,
};
/* Audio subsystem */
@ -312,6 +317,10 @@ static int __init sdp3430_soc_init(void)
*(unsigned int *)sdp3430_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
*(unsigned int *)sdp3430_dai[1].cpu_dai->private_data = 2; /* McBSP3 */
/* Set TWL4030 GPIO6 as EXTMUTE signal */
twl4030_i2c_write_u8(TWL4030_MODULE_INTBR, EXTMUTE(0x02),
TWL4030_MODULE_INTBR);
ret = platform_device_add(sdp3430_snd_device);
if (ret)
goto err1;