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ASoC: omap: rx51: Add stereo output support to audio jack 

Audio jack in Nokia RX-51/N900 is driven by TPA6130 headphone amplifier.
This patch adds support for it and stereo output can be active when
"Jack Function" == "TV-OUT" || "Headphone".

As the TPA6130 can output very high volume levels the output is limited
with snd_soc_limit_volume. Limiting value is found from Maemo kernel sources.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Jarkko Nikula 2011-01-27 16:47:11 +02:00 committed by Liam Girdwood
parent 64ed983650
commit 48529b3b7c
2 changed files with 40 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
sound/soc/omap/Kconfig
View File

@ -24,6 +24,7 @@ config SND_OMAP_SOC_RX51
select OMAP_MCBSP
select SND_OMAP_SOC_MCBSP
select SND_SOC_TLV320AIC3X
select SND_SOC_TPA6130A2
help
Say Y if you want to add support for SoC audio on Nokia RX-51
hardware. This is also known as Nokia N900 product.

43
sound/soc/omap/rx51.c
View File

@ -31,6 +31,7 @@
#include <sound/pcm.h>
#include <sound/soc.h>
#include <plat/mcbsp.h>
#include "../codecs/tpa6130a2.h"
#include <asm/mach-types.h>
@ -47,7 +48,8 @@
enum {
RX51_JACK_DISABLED,
RX51_JACK_TVOUT, /* tv-out */
RX51_JACK_TVOUT, /* tv-out with stereo output */
RX51_JACK_HP, /* headphone: stereo output, no mic */
};
static int rx51_spk_func;
@ -57,6 +59,15 @@ static int rx51_jack_func;
static void rx51_ext_control(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
int hp = 0, tvout = 0;
switch (rx51_jack_func) {
case RX51_JACK_TVOUT:
tvout = 1;
case RX51_JACK_HP:
hp = 1;
break;
}
if (rx51_spk_func)
snd_soc_dapm_enable_pin(dapm, "Ext Spk");
@ -66,9 +77,12 @@ static void rx51_ext_control(struct snd_soc_codec *codec)
snd_soc_dapm_enable_pin(dapm, "DMic");
else
snd_soc_dapm_disable_pin(dapm, "DMic");
if (hp)
snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
else
snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
gpio_set_value(RX51_TVOUT_SEL_GPIO,
rx51_jack_func == RX51_JACK_TVOUT);
gpio_set_value(RX51_TVOUT_SEL_GPIO, tvout);
snd_soc_dapm_sync(dapm);
}
@ -153,6 +167,19 @@ static int rx51_spk_event(struct snd_soc_dapm_widget *w,
return 0;
}
static int rx51_hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_codec *codec = w->dapm->codec;
if (SND_SOC_DAPM_EVENT_ON(event))
tpa6130a2_stereo_enable(codec, 1);
else
tpa6130a2_stereo_enable(codec, 0);
return 0;
}
static int rx51_get_input(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@ -212,11 +239,14 @@ static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
SND_SOC_DAPM_MIC("DMic", NULL),
SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Ext Spk", NULL, "HPLOUT"},
{"Ext Spk", NULL, "HPROUT"},
{"Headphone Jack", NULL, "LLOUT"},
{"Headphone Jack", NULL, "RLOUT"},
{"DMic Rate 64", NULL, "Mic Bias 2V"},
{"Mic Bias 2V", NULL, "DMic"},
@ -224,7 +254,7 @@ static const struct snd_soc_dapm_route audio_map[] = {
static const char *spk_function[] = {"Off", "On"};
static const char *input_function[] = {"ADC", "Digital Mic"};
static const char *jack_function[] = {"Off", "TV-OUT"};
static const char *jack_function[] = {"Off", "TV-OUT", "Headphone"};
static const struct soc_enum rx51_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
@ -265,6 +295,11 @@ static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
/* Set up RX-51 specific audio path audio_map */
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
err = tpa6130a2_add_controls(codec);
if (err < 0)
return err;
snd_soc_limit_volume(codec, "TPA6130A2 Headphone Playback Volume", 42);
snd_soc_dapm_sync(dapm);
/* AV jack detection */