ALSA: hda - hdmi: Add HBR bitstreaming support for ATI/AMD HDMI codecs

ATI/AMD HDMI codecs do not include standard HDA HDMI HBR support (which
is required for bitstreaming DTS-HD and Dolby TrueHD), instead they have
custom verbs for checking and enabling it.

Add support for the ATI/AMD HDMI HBR verbs.

The specification is available at:
http://www.x.org/docs/AMD/AMD_HDA_verbs_v2.pdf

v2: adapted to hdmi_ops infrastructure

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Tested-by: Peter Frühberger <fritsch@xbmc.org> # v1
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 35 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 0307ae87bef3..f6a97607e522 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2799,6 +2799,7 @@ static int patch_nvhdmi_8ch_7x(struct hda_codec *codec)
 #define ATI_VERB_SET_MULTICHANNEL_23    0x778
 #define ATI_VERB_SET_MULTICHANNEL_45    0x779
 #define ATI_VERB_SET_MULTICHANNEL_67    0x77a
+#define ATI_VERB_SET_HBR_CONTROL        0x77c
 #define ATI_VERB_SET_MULTICHANNEL_1     0x785
 #define ATI_VERB_SET_MULTICHANNEL_3     0x786
 #define ATI_VERB_SET_MULTICHANNEL_5     0x787
@@ -2810,6 +2811,7 @@ static int patch_nvhdmi_8ch_7x(struct hda_codec *codec)
 #define ATI_VERB_GET_MULTICHANNEL_23    0xf78
 #define ATI_VERB_GET_MULTICHANNEL_45    0xf79
 #define ATI_VERB_GET_MULTICHANNEL_67    0xf7a
+#define ATI_VERB_GET_HBR_CONTROL        0xf7c
 #define ATI_VERB_GET_MULTICHANNEL_1     0xf85
 #define ATI_VERB_GET_MULTICHANNEL_3     0xf86
 #define ATI_VERB_GET_MULTICHANNEL_5     0xf87
@@ -2821,6 +2823,9 @@ static int patch_nvhdmi_8ch_7x(struct hda_codec *codec)
 #define ATI_MULTICHANNEL_MODE_PAIRED    0
 #define ATI_MULTICHANNEL_MODE_SINGLE    1
 
+#define ATI_HBR_CAPABLE 0x01
+#define ATI_HBR_ENABLE 0x10
+
 static int atihdmi_pin_get_eld(struct hda_codec *codec, hda_nid_t nid,
                            unsigned char *buf, int *eld_size)
 {
@@ -3015,6 +3020,35 @@ static void atihdmi_paired_cea_alloc_to_tlv_chmap(struct cea_channel_speaker_all
         WARN_ON(count != channels);
 }
 
+static int atihdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
+                                 bool hbr)
+{
+        int hbr_ctl, hbr_ctl_new;
+
+        hbr_ctl = snd_hda_codec_read(codec, pin_nid, 0, ATI_VERB_GET_HBR_CONTROL, 0);
+        if (hbr_ctl & ATI_HBR_CAPABLE) {
+                if (hbr)
+                        hbr_ctl_new = hbr_ctl | ATI_HBR_ENABLE;
+                else
+                        hbr_ctl_new = hbr_ctl & ~ATI_HBR_ENABLE;
+
+                snd_printdd("atihdmi_pin_hbr_setup: "
+                                "NID=0x%x, %shbr-ctl=0x%x\n",
+                                pin_nid,
+                                hbr_ctl == hbr_ctl_new ? "" : "new-",
+                                hbr_ctl_new);
+
+                if (hbr_ctl != hbr_ctl_new)
+                        snd_hda_codec_write(codec, pin_nid, 0,
+                                                ATI_VERB_SET_HBR_CONTROL,
+                                                hbr_ctl_new);
+
+        } else if (hbr)
+                return -EINVAL;
+
+        return 0;
+}
+
 static int atihdmi_init(struct hda_codec *codec)
 {
         struct hdmi_spec *spec = codec->spec;
@@ -3060,6 +3094,7 @@ static int patch_atihdmi(struct hda_codec *codec)
         spec->ops.pin_get_slot_channel = atihdmi_pin_get_slot_channel;
         spec->ops.pin_set_slot_channel = atihdmi_pin_set_slot_channel;
         spec->ops.pin_setup_infoframe = atihdmi_pin_setup_infoframe;
+        spec->ops.pin_hbr_setup = atihdmi_pin_hbr_setup;
 
         if (!has_amd_full_remap_support(codec)) {
                 /* override to ATI/AMD-specific versions with pairwise mapping */