Add EXT_MUTE support in Zoom2 machine driver. Member ext_mute_gpio is passed to TWL4030 as an external mute control for headset power on/off sequence. This is necessary to further reduce pop noise problem. Gpio 153 is connected to signal EXT_MUTE in Zoom2 board.

In addition, change ramp delay value to 3 (218/161/109 ms). With previous ramp delay value, pop noise was louder, and with any longer value beep tone can be observed.

Signed-off-by: Jorge Eduardo Candelaria x0107209@ti.com --- sound/soc/omap/zoom2.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/sound/soc/omap/zoom2.c b/sound/soc/omap/zoom2.c index 3de6d2b..8941f45 100644 --- a/sound/soc/omap/zoom2.c +++ b/sound/soc/omap/zoom2.c @@ -236,8 +236,9 @@ static struct snd_soc_card snd_soc_zoom2 = {

/* twl4030 setup */ static struct twl4030_setup_data twl4030_setup = { - .ramp_delay_value = 2, /* 81 ms */ + .ramp_delay_value = 3, /* 161 ms */ .sysclk = 26000, + .ext_mute_gpio = 153, };

/* Audio subsystem */