ASoC: omap: rx51: Add headset support
This patch adds support for headset microphone in Nokia RX-51/N900. The mic
signal from audio jack is routed to codec A LINE1L via two switches and the
mic bias is coming from codec B part.
First switch is the tv-out switch that is already supported and the second
switch selects between voltage detection circuit and codecs. As there is
no use for voltage detection at the moment the second switch is connected
statically to codecs in rx51_soc_init.
Headset can be active when control "Jack Function" is set to "Headset".
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/sound/soc/omap/rx51.c b/sound/soc/omap/rx51.c
index 9411969..9860018 100644
--- a/sound/soc/omap/rx51.c
+++ b/sound/soc/omap/rx51.c
@@ -40,6 +40,7 @@
#define RX51_TVOUT_SEL_GPIO 40
#define RX51_JACK_DETECT_GPIO 177
+#define RX51_ECI_SW_GPIO 182
/*
* REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
* gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -50,6 +51,7 @@
RX51_JACK_DISABLED,
RX51_JACK_TVOUT, /* tv-out with stereo output */
RX51_JACK_HP, /* headphone: stereo output, no mic */
+ RX51_JACK_HS, /* headset: stereo output with mic */
};
static int rx51_spk_func;
@@ -59,11 +61,15 @@
static void rx51_ext_control(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
- int hp = 0, tvout = 0;
+ int hp = 0, hs = 0, tvout = 0;
switch (rx51_jack_func) {
case RX51_JACK_TVOUT:
tvout = 1;
+ hp = 1;
+ break;
+ case RX51_JACK_HS:
+ hs = 1;
case RX51_JACK_HP:
hp = 1;
break;
@@ -81,6 +87,10 @@
snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
else
snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
+ if (hs)
+ snd_soc_dapm_enable_pin(dapm, "HS Mic");
+ else
+ snd_soc_dapm_disable_pin(dapm, "HS Mic");
gpio_set_value(RX51_TVOUT_SEL_GPIO, tvout);
@@ -240,6 +250,7 @@
SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
SND_SOC_DAPM_MIC("DMic", NULL),
SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
+ SND_SOC_DAPM_MIC("HS Mic", NULL),
};
static const struct snd_soc_dapm_widget aic34_dapm_widgetsb[] = {
@@ -259,11 +270,14 @@
static const struct snd_soc_dapm_route audio_mapb[] = {
{"b LINE2R", NULL, "MONO_LOUT"},
{"Earphone", NULL, "b HPLOUT"},
+
+ {"LINE1L", NULL, "b Mic Bias 2.5V"},
+ {"b Mic Bias 2.5V", NULL, "HS Mic"}
};
static const char *spk_function[] = {"Off", "On"};
static const char *input_function[] = {"ADC", "Digital Mic"};
-static const char *jack_function[] = {"Off", "TV-OUT", "Headphone"};
+static const char *jack_function[] = {"Off", "TV-OUT", "Headphone", "Headset"};
static const struct soc_enum rx51_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
@@ -398,6 +412,10 @@
GPIOF_DIR_OUT | GPIOF_INIT_LOW, "tvout_sel");
if (err)
goto err_gpio_tvout_sel;
+ err = gpio_request_one(RX51_ECI_SW_GPIO,
+ GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "eci_sw");
+ if (err)
+ goto err_gpio_eci_sw;
rx51_snd_device = platform_device_alloc("soc-audio", -1);
if (!rx51_snd_device) {
@@ -415,6 +433,8 @@
err2:
platform_device_put(rx51_snd_device);
err1:
+ gpio_free(RX51_ECI_SW_GPIO);
+err_gpio_eci_sw:
gpio_free(RX51_TVOUT_SEL_GPIO);
err_gpio_tvout_sel:
@@ -427,6 +447,7 @@
rx51_av_jack_gpios);
platform_device_unregister(rx51_snd_device);
+ gpio_free(RX51_ECI_SW_GPIO);
gpio_free(RX51_TVOUT_SEL_GPIO);
}