OMAP4 SDP/Blaze boards have digital microphones.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
sound/soc/omap/Kconfig | 2 +
sound/soc/omap/sdp4430.c | 84 ++++++++++++++++++++++++++++++++++++++++------
2 files changed, 75 insertions(+), 11 deletions(-)
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 052254a..fb1bf25 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -100,8 +100,10 @@ config SND_OMAP_SOC_SDP3430
config SND_OMAP_SOC_SDP4430
tristate "SoC Audio support for Texas Instruments SDP4430"
depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP_4430SDP
+ select SND_OMAP_SOC_DMIC
select SND_OMAP_SOC_MCPDM
select SND_SOC_TWL6040
+ select SND_SOC_DMIC
help
Say Y if you want to add support for SoC audio on Texas Instruments
SDP4430.
diff --git a/sound/soc/omap/sdp4430.c b/sound/soc/omap/sdp4430.c
index 03d9fa4..a8c4926 100644
--- a/sound/soc/omap/sdp4430.c
+++ b/sound/soc/omap/sdp4430.c
@@ -33,6 +33,7 @@
#include <plat/hardware.h>
#include <plat/mux.h>
+#include "omap-dmic.h"
#include "omap-mcpdm.h"
#include "omap-pcm.h"
#include "../codecs/twl6040.h"
@@ -67,6 +68,31 @@ static struct snd_soc_ops sdp4430_ops = {
.hw_params = sdp4430_hw_params,
};
+static int sdp4430_dmic_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int ret = 0;
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
+ 19200000, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ printk(KERN_ERR "can't set DMIC cpu system clock\n");
+ return ret;
+ }
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_DMIC_CLKDIV, 8);
+ if (ret < 0) {
+ printk(KERN_ERR "can't set DMIC cpu clock divider\n");
+ return ret;
+ }
+ return 0;
+}
+
+static struct snd_soc_ops sdp4430_dmic_ops = {
+ .hw_params = sdp4430_dmic_hw_params,
+};
+
/* Headset jack */
static struct snd_soc_jack hs_jack;
@@ -148,23 +174,59 @@ static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
return ret;
}
+static const struct snd_soc_dapm_widget sdp4430_dmic_dapm_widgets[] = {
+ SND_SOC_DAPM_MIC("Digital Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route dmic_audio_map[] = {
+ {"DMic", NULL, "Digital Mic1 Bias"},
+ {"Digital Mic1 Bias", NULL, "Digital Mic"},
+};
+
+static int sdp4430_dmic_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+ int ret;
+
+ ret = snd_soc_dapm_new_controls(dapm, sdp4430_dmic_dapm_widgets,
+ ARRAY_SIZE(sdp4430_dmic_dapm_widgets));
+ if (ret)
+ return ret;
+
+ return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
+ ARRAY_SIZE(dmic_audio_map));
+}
+
/* Digital audio interface glue - connects codec <--> CPU */
-static struct snd_soc_dai_link sdp4430_dai = {
- .name = "TWL6040",
- .stream_name = "TWL6040",
- .cpu_dai_name = "omap-mcpdm",
- .codec_dai_name = "twl6040-legacy",
- .platform_name = "omap-pcm-audio",
- .codec_name = "twl6040-codec",
- .init = sdp4430_twl6040_init,
- .ops = &sdp4430_ops,
+static struct snd_soc_dai_link sdp4430_dai[] = {
+ {
+ .name = "TWL6040",
+ .stream_name = "TWL6040",
+ .cpu_dai_name = "omap-mcpdm",
+ .codec_dai_name = "twl6040-legacy",
+ .platform_name = "omap-pcm-audio",
+ .codec_name = "twl6040-codec",
+ .init = sdp4430_twl6040_init,
+ .ops = &sdp4430_ops,
+ },
+ {
+ .name = "DMIC",
+ .stream_name = "DMIC Capture",
+ .cpu_dai_name = "omap-dmic",
+ .codec_dai_name = "dmic-hifi",
+ .platform_name = "omap-pcm-audio",
+ .codec_name = "dmic-codec",
+ .init = sdp4430_dmic_init,
+ .ops = &sdp4430_dmic_ops,
+ },
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_sdp4430 = {
.name = "SDP4430",
- .dai_link = &sdp4430_dai,
- .num_links = 1,
+ .dai_link = sdp4430_dai,
+ .num_links = ARRAY_SIZE(sdp4430_dai),
.dapm_widgets = sdp4430_twl6040_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(sdp4430_twl6040_dapm_widgets),
--
1.7.8.rc3
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