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-rw-r--r--sound/soc/omap/Kconfig1
-rw-r--r--sound/soc/omap/omap-hdmi.c77
2 files changed, 78 insertions, 0 deletions
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 9ccfa5e1c11b..13afb2c68dcd 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -114,6 +114,7 @@ config SND_OMAP_SOC_OMAP4_HDMI
depends on SND_OMAP_SOC && OMAP4_DSS_HDMI && OMAP2_DSS && ARCH_OMAP4
select SND_OMAP_SOC_HDMI
select SND_SOC_OMAP_HDMI_CODEC
+ select OMAP4_DSS_HDMI_AUDIO
help
Say Y if you want to add support for SoC HDMI audio on Texas Instruments
OMAP4 chips
diff --git a/sound/soc/omap/omap-hdmi.c b/sound/soc/omap/omap-hdmi.c
index a6656b2a7353..ff6132a9b7e8 100644
--- a/sound/soc/omap/omap-hdmi.c
+++ b/sound/soc/omap/omap-hdmi.c
@@ -30,6 +30,7 @@
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
+#include <video/omapdss.h>
#include <plat/dma.h>
#include "omap-pcm.h"
@@ -39,6 +40,7 @@
struct hdmi_priv {
struct omap_pcm_dma_data dma_params;
+ struct omap_dss_device *dssdev;
};
static int omap_hdmi_dai_startup(struct snd_pcm_substream *substream,
@@ -57,6 +59,14 @@ static int omap_hdmi_dai_startup(struct snd_pcm_substream *substream,
return 0;
}
+static int omap_hdmi_dai_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
+
+ return priv->dssdev->driver->audio_enable(priv->dssdev);
+}
+
static int omap_hdmi_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@@ -83,6 +93,37 @@ static int omap_hdmi_dai_hw_params(struct snd_pcm_substream *substream,
return err;
}
+static int omap_hdmi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
+ int err = 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ err = priv->dssdev->driver->audio_start(priv->dssdev);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ priv->dssdev->driver->audio_stop(priv->dssdev);
+ break;
+ default:
+ err = -EINVAL;
+ }
+ return err;
+}
+
+static void omap_hdmi_dai_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
+
+ priv->dssdev->driver->audio_disable(priv->dssdev);
+}
+
static const struct snd_soc_dai_ops omap_hdmi_dai_ops = {
.startup = omap_hdmi_dai_startup,
.hw_params = omap_hdmi_dai_hw_params,
@@ -103,6 +144,7 @@ static __devinit int omap_hdmi_probe(struct platform_device *pdev)
int ret;
struct resource *hdmi_rsrc;
struct hdmi_priv *hdmi_data;
+ bool hdmi_dev_found = false;
hdmi_data = devm_kzalloc(&pdev->dev, sizeof(*hdmi_data), GFP_KERNEL);
if (hdmi_data == NULL) {
@@ -129,14 +171,49 @@ static __devinit int omap_hdmi_probe(struct platform_device *pdev)
hdmi_data->dma_params.name = "HDMI playback";
hdmi_data->dma_params.sync_mode = OMAP_DMA_SYNC_PACKET;
+ /*
+ * TODO: We assume that there is only one DSS HDMI device. Future
+ * OMAP implementations may support more than one HDMI devices and
+ * we should provided separate audio support for all of them.
+ */
+ /* Find an HDMI device. */
+ for_each_dss_dev(hdmi_data->dssdev) {
+ omap_dss_get_device(hdmi_data->dssdev);
+
+ if (!hdmi_data->dssdev->driver) {
+ omap_dss_put_device(hdmi_data->dssdev);
+ continue;
+ }
+
+ if (hdmi_data->dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
+ hdmi_dev_found = true;
+ break;
+ }
+ }
+
+ if (!hdmi_dev_found) {
+ dev_err(&pdev->dev, "no driver for HDMI display found\n");
+ return -ENODEV;
+ }
+
dev_set_drvdata(&pdev->dev, hdmi_data);
ret = snd_soc_register_dai(&pdev->dev, &omap_hdmi_dai);
+
return ret;
}
static int __devexit omap_hdmi_remove(struct platform_device *pdev)
{
+ struct hdmi_priv *hdmi_data = dev_get_drvdata(&pdev->dev);
+
snd_soc_unregister_dai(&pdev->dev);
+
+ if (hdmi_data == NULL) {
+ dev_err(&pdev->dev, "cannot obtain HDMi data\n");
+ return -ENODEV;
+ }
+
+ omap_dss_put_device(hdmi_data->dssdev);
return 0;
}