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author | Ingo Molnar <mingo@elte.hu> | 2010-08-19 12:48:09 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-08-19 12:48:09 +0200 |
commit | c8710ad38900153af7a3e6762e99c062cfa46443 (patch) | |
tree | a0c0632274c4eb72f51e99a5861f71cffe65ea60 /sound/pci/hda/hda_eld.c | |
parent | perf, tracing: add missing __percpu markups (diff) | |
parent | tracing: Clean up seqfile code for format file (diff) | |
download | linux-dev-c8710ad38900153af7a3e6762e99c062cfa46443.tar.xz linux-dev-c8710ad38900153af7a3e6762e99c062cfa46443.zip |
Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
Diffstat (limited to 'sound/pci/hda/hda_eld.c')
-rw-r--r-- | sound/pci/hda/hda_eld.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c index d8da18a9e98b..803b298f7411 100644 --- a/sound/pci/hda/hda_eld.c +++ b/sound/pci/hda/hda_eld.c @@ -596,4 +596,53 @@ void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld) } EXPORT_SYMBOL_HDA(snd_hda_eld_proc_free); +/* update PCM info based on ELD */ +void hdmi_eld_update_pcm_info(struct hdmi_eld *eld, struct hda_pcm_stream *pcm, + struct hda_pcm_stream *codec_pars) +{ + int i; + + pcm->rates = 0; + pcm->formats = 0; + pcm->maxbps = 0; + pcm->channels_min = -1; + pcm->channels_max = 0; + for (i = 0; i < eld->sad_count; i++) { + struct cea_sad *a = &eld->sad[i]; + pcm->rates |= a->rates; + if (a->channels < pcm->channels_min) + pcm->channels_min = a->channels; + if (a->channels > pcm->channels_max) + pcm->channels_max = a->channels; + if (a->format == AUDIO_CODING_TYPE_LPCM) { + if (a->sample_bits & AC_SUPPCM_BITS_16) { + pcm->formats |= SNDRV_PCM_FMTBIT_S16_LE; + if (pcm->maxbps < 16) + pcm->maxbps = 16; + } + if (a->sample_bits & AC_SUPPCM_BITS_20) { + pcm->formats |= SNDRV_PCM_FMTBIT_S32_LE; + if (pcm->maxbps < 20) + pcm->maxbps = 20; + } + if (a->sample_bits & AC_SUPPCM_BITS_24) { + pcm->formats |= SNDRV_PCM_FMTBIT_S32_LE; + if (pcm->maxbps < 24) + pcm->maxbps = 24; + } + } + } + + if (!codec_pars) + return; + + /* restrict the parameters by the values the codec provides */ + pcm->rates &= codec_pars->rates; + pcm->formats &= codec_pars->formats; + pcm->channels_min = max(pcm->channels_min, codec_pars->channels_min); + pcm->channels_max = min(pcm->channels_max, codec_pars->channels_max); + pcm->maxbps = min(pcm->maxbps, codec_pars->maxbps); +} +EXPORT_SYMBOL_HDA(hdmi_eld_update_pcm_info); + #endif /* CONFIG_PROC_FS */ |