diff options
Diffstat (limited to 'sound/pci/hda/hda_eld.c')
| -rw-r--r-- | sound/pci/hda/hda_eld.c | 54 |
1 files changed, 48 insertions, 6 deletions
diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c index d8da18a9e98b..cb0c23a6b473 100644 --- a/sound/pci/hda/hda_eld.c +++ b/sound/pci/hda/hda_eld.c @@ -332,7 +332,6 @@ int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid) return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, AC_DIPSIZE_ELD_BUF); } -EXPORT_SYMBOL_HDA(snd_hdmi_get_eld_size); int snd_hdmi_get_eld(struct hdmi_eld *eld, struct hda_codec *codec, hda_nid_t nid) @@ -368,7 +367,6 @@ int snd_hdmi_get_eld(struct hdmi_eld *eld, kfree(buf); return ret; } -EXPORT_SYMBOL_HDA(snd_hdmi_get_eld); static void hdmi_show_short_audio_desc(struct cea_sad *a) { @@ -407,7 +405,6 @@ void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen) } buf[j] = '\0'; /* necessary when j == 0 */ } -EXPORT_SYMBOL_HDA(snd_print_channel_allocation); void snd_hdmi_show_eld(struct hdmi_eld *e) { @@ -426,7 +423,6 @@ void snd_hdmi_show_eld(struct hdmi_eld *e) for (i = 0; i < e->sad_count; i++) hdmi_show_short_audio_desc(e->sad + i); } -EXPORT_SYMBOL_HDA(snd_hdmi_show_eld); #ifdef CONFIG_PROC_FS @@ -585,7 +581,6 @@ int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld, return 0; } -EXPORT_SYMBOL_HDA(snd_hda_eld_proc_new); void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld) { @@ -594,6 +589,53 @@ void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld) eld->proc_entry = NULL; } } -EXPORT_SYMBOL_HDA(snd_hda_eld_proc_free); #endif /* CONFIG_PROC_FS */ + +/* 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); +} |