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ALSA: hda: HDMI channel mapping cleanups

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Refactor the channel mapping code for consistent naming
and make it more informed about channel allocations.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Wu Fengguang 2008-11-19 08:56:18 +08:00 committed by Takashi Iwai
parent 698544de8a
commit 9c8641e8ee
1 changed files with 18 additions and 11 deletions
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29
sound/pci/hda/patch_intelhdmi.c
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@ -290,7 +290,7 @@ static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
chs, hdmi_get_channel_count(codec));
}
static void hdmi_debug_slot_mapping(struct hda_codec *codec)
static void hdmi_debug_channel_mapping(struct hda_codec *codec)
{
#ifdef CONFIG_SND_DEBUG_VERBOSE
int i;
@ -305,13 +305,6 @@ static void hdmi_debug_slot_mapping(struct hda_codec *codec)
#endif
}
static void hdmi_setup_channel_mapping(struct hda_codec *codec)
{
snd_hda_sequence_write(codec, def_chan_map);
hdmi_debug_slot_mapping(codec);
}
static void hdmi_parse_eld(struct hda_codec *codec)
{
struct intel_hdmi_spec *spec = codec->spec;
@ -461,6 +454,22 @@ static int hdmi_setup_channel_allocation(struct hda_codec *codec,
return -1;
}
static void hdmi_setup_channel_mapping(struct hda_codec *codec,
struct hdmi_audio_infoframe *ai)
{
if (!ai->CA)
return;
/*
* TODO: adjust channel mapping if necessary
* ALSA sequence is front/surr/clfe/side?
*/
snd_hda_sequence_write(codec, def_chan_map);
hdmi_debug_channel_mapping(codec);
}
static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
@ -472,6 +481,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
};
hdmi_setup_channel_allocation(codec, &ai);
hdmi_setup_channel_mapping(codec, &ai);
hdmi_fill_audio_infoframe(codec, &ai);
}
@ -569,9 +579,6 @@ static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
hdmi_set_channel_count(codec, substream->runtime->channels);
/* wfg: channel mapping not supported by DEVCTG */
hdmi_setup_channel_mapping(codec);
hdmi_setup_audio_infoframe(codec, substream);
hdmi_enable_output(codec);