From: "Subhransu S. Prusty" subhransu.s.prusty@intel.com
The DAI ops are used for triggering HDMI streams and configuring the parameters
Signed-off-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/codecs/hdac_hdmi.c | 162 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 162 insertions(+)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 45dfc4f608e5..f96bd2fb634b 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -26,7 +26,10 @@ #include <sound/hdaudio_ext.h> #include "../../hda/local.h"
+#define AMP_OUT_MUTE 0xb080 +#define AMP_OUT_UNMUTE 0xb000 #define PIN_OUT (AC_PINCTL_OUT_EN) + #define HDA_MAX_CONNECTIONS 32
struct hdac_hdmi_cvt_params { @@ -67,6 +70,156 @@ static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev) return container_of(hdac, struct hdac_ext_device, hdac); }
+static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac, + hda_nid_t cvt_nid, hda_nid_t pin_nid, + u32 stream_tag, int format) +{ + unsigned int val; + + dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n", + cvt_nid, pin_nid, stream_tag, format); + + val = (stream_tag << 4); + + snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0, + AC_VERB_SET_CHANNEL_STREAMID, val); + snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0, + AC_VERB_SET_STREAM_FORMAT, format); + + return 0; +} + +static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev, + struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state) +{ + /* Power up pin widget */ + if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin.nid, pwr_state)) + snd_hdac_codec_write(&edev->hdac, dai_map->pin.nid, 0, + AC_VERB_SET_POWER_STATE, pwr_state); + + /* Power up converter */ + if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt.nid, pwr_state)) + snd_hdac_codec_write(&edev->hdac, dai_map->cvt.nid, 0, + AC_VERB_SET_POWER_STATE, pwr_state); +} + +static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); + struct hdac_hdmi_priv *hdmi = hdac->private_data; + struct hdac_hdmi_dai_pin_map *dai_map; + struct hdac_ext_dma_params *dd; + + if (dai->id > 0) { + dev_err(&hdac->hdac.dev, "Only one dai supported as of now\n"); + return -ENODEV; + } + + dai_map = &hdmi->dai_map[dai->id]; + + dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream); + dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n", + dd->stream_tag, dd->format); + + return hdac_hdmi_setup_stream(hdac, dai_map->cvt.nid, dai_map->pin.nid, + dd->stream_tag, dd->format); +} + +static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai) +{ + struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); + struct hdac_ext_dma_params *dd; + + if (dai->id > 0) { + dev_err(&hdac->hdac.dev, "Only one dai supported as of now\n"); + return -ENODEV; + } + + dd = kzalloc(sizeof(*dd), GFP_KERNEL); + dd->format = snd_hdac_calc_stream_format(params_rate(hparams), + params_channels(hparams), params_format(hparams), + 24, 0); + + snd_soc_dai_set_dma_data(dai, substream, (void *)dd); + + return 0; +} + +static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai); + struct hdac_ext_dma_params *dd; + struct hdac_hdmi_priv *hdmi = edev->private_data; + struct hdac_hdmi_dai_pin_map *dai_map; + + dai_map = &hdmi->dai_map[dai->id]; + + snd_hdac_codec_write(&edev->hdac, dai_map->cvt.nid, 0, + AC_VERB_SET_CHANNEL_STREAMID, 0); + snd_hdac_codec_write(&edev->hdac, dai_map->cvt.nid, 0, + AC_VERB_SET_STREAM_FORMAT, 0); + + dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream); + snd_soc_dai_set_dma_data(dai, substream, NULL); + + kfree(dd); + + return 0; +} + +static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); + struct hdac_hdmi_priv *hdmi = hdac->private_data; + struct hdac_hdmi_dai_pin_map *dai_map; + int val; + + if (dai->id > 0) { + dev_err(&hdac->hdac.dev, "Only one dai supported as of now\n"); + return -ENODEV; + } + + dai_map = &hdmi->dai_map[dai->id]; + + val = snd_hdac_codec_read(&hdac->hdac, dai_map->pin.nid, 0, + AC_VERB_GET_PIN_SENSE, 0); + dev_info(&hdac->hdac.dev, "Val for AC_VERB_GET_PIN_SENSE: %x\n", val); + + if ((!(val & AC_PINSENSE_PRESENCE)) || (!(val & AC_PINSENSE_ELDV))) { + dev_err(&hdac->hdac.dev, "Monitor presence invalid with val: %x\n", val); + return -ENODEV; + } + + hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0); + + snd_hdac_codec_write(&hdac->hdac, dai_map->pin.nid, 0, + AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE); + + snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, 2); + + return 0; +} + +static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); + struct hdac_hdmi_priv *hdmi = hdac->private_data; + struct hdac_hdmi_dai_pin_map *dai_map; + + dai_map = &hdmi->dai_map[dai->id]; + + hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3); + + snd_hdac_codec_write(&hdac->hdac, dai_map->pin.nid, 0, + AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE); +} + static int hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt) { @@ -282,6 +435,14 @@ static struct snd_soc_codec_driver hdmi_hda_codec = { .idle_bias_off = true, };
+static struct snd_soc_dai_ops hdmi_dai_ops = { + .startup = hdac_hdmi_pcm_open, + .shutdown = hdac_hdmi_pcm_close, + .hw_params = hdac_hdmi_set_hw_params, + .prepare = hdac_hdmi_playback_prepare, + .hw_free = hdac_hdmi_playback_cleanup, +}; + static struct snd_soc_dai_driver hdmi_dais[] = { { .name = "intel-hdmi-hif1", .playback = { @@ -298,6 +459,7 @@ static struct snd_soc_dai_driver hdmi_dais[] = { SNDRV_PCM_FMTBIT_S32_LE,
}, + .ops = &hdmi_dai_ops, }, };