diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/omap/Kconfig | 1 | ||||
| -rw-r--r-- | sound/soc/omap/omap-hdmi.c | 77 |
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; } |