5 files changed, 95 insertions, 3 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 */
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 7a97f126f6f7..28ab4aead48f 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -604,6 +604,8 @@ struct hdmi_eld {
 int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
 int snd_hdmi_get_eld(struct hdmi_eld *, struct hda_codec *, hda_nid_t);
 void snd_hdmi_show_eld(struct hdmi_eld *eld);
+void hdmi_eld_update_pcm_info(struct hdmi_eld *eld, struct hda_pcm_stream *pcm,
+                              struct hda_pcm_stream *codec_pars);
 
 #ifdef CONFIG_PROC_FS
 int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld,
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 522e0748ee99..2bc0f07cf33f 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -46,6 +46,7 @@ struct hdmi_spec {
          * export one pcm per pipe
          */
         struct hda_pcm  pcm_rec[MAX_HDMI_CVTS];
+        struct hda_pcm_stream codec_pcm_pars[MAX_HDMI_CVTS];
 
         /*
          * nvhdmi specific
@@ -766,6 +767,47 @@ static int hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid,
 }
 
 /*
+ * HDA PCM callbacks
+ */
+static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
+                         struct hda_codec *codec,
+                         struct snd_pcm_substream *substream)
+{
+        struct hdmi_spec *spec = codec->spec;
+        struct hdmi_eld *eld;
+        struct hda_pcm_stream *codec_pars;
+        unsigned int idx;
+
+        for (idx = 0; idx < spec->num_cvts; idx++)
+                if (hinfo->nid == spec->cvt[idx])
+                        break;
+        if (snd_BUG_ON(idx >= spec->num_cvts) ||
+            snd_BUG_ON(idx >= spec->num_pins))
+                return -EINVAL;
+
+        /* save the PCM info the codec provides */
+        codec_pars = &spec->codec_pcm_pars[idx];
+        if (!codec_pars->rates)
+                *codec_pars = *hinfo;
+
+        eld = &spec->sink_eld[idx];
+        if (eld->sad_count > 0) {
+                hdmi_eld_update_pcm_info(eld, hinfo, codec_pars);
+                if (hinfo->channels_min > hinfo->channels_max ||
+                    !hinfo->rates || !hinfo->formats)
+                        return -ENODEV;
+        } else {
+                /* fallback to the codec default */
+                hinfo->channels_min = codec_pars->channels_min;
+                hinfo->channels_max = codec_pars->channels_max;
+                hinfo->rates = codec_pars->rates;
+                hinfo->formats = codec_pars->formats;
+                hinfo->maxbps = codec_pars->maxbps;
+        }
+        return 0;
+}
+
+/*
  * HDA/HDMI auto parsing
  */
 
diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c
index 5972d5e7d01f..d382d3c81c0f 100644
--- a/sound/pci/hda/patch_intelhdmi.c
+++ b/sound/pci/hda/patch_intelhdmi.c
@@ -80,6 +80,7 @@ static struct hda_pcm_stream intel_hdmi_pcm_playback = {
         .substreams = 1,
         .channels_min = 2,
         .ops = {
+                .open = hdmi_pcm_open,
                 .prepare = intel_hdmi_playback_pcm_prepare,
                 .cleanup = intel_hdmi_playback_pcm_cleanup,
         },
diff --git a/sound/pci/hda/patch_nvhdmi.c b/sound/pci/hda/patch_nvhdmi.c
index 77e2b4028b9f..f636870dc718 100644
--- a/sound/pci/hda/patch_nvhdmi.c
+++ b/sound/pci/hda/patch_nvhdmi.c
@@ -347,10 +347,8 @@ static int nvhdmi_dig_playback_pcm_prepare_2ch(struct hda_pcm_stream *hinfo,
 static struct hda_pcm_stream nvhdmi_pcm_digital_playback_8ch_89 = {
         .substreams = 1,
         .channels_min = 2,
-        .rates = SUPPORTED_RATES,
-        .maxbps = SUPPORTED_MAXBPS,
-        .formats = SUPPORTED_FORMATS,
         .ops = {
+                .open = hdmi_pcm_open,
                 .prepare = nvhdmi_dig_playback_pcm_prepare_8ch_89,
                 .cleanup = nvhdmi_playback_pcm_cleanup,
         },