diff options
| author | Anssi Hannula <anssi.hannula@iki.fi> | 2013-10-24 21:10:36 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-10-24 22:54:13 +0200 |
| commit | 89250f84644676c1ed6a09acef1033e14596a402 (patch) | |
| tree | 2af9f7e5277faad79f336ab27ad6fe89859478d7 /sound/pci/hda/patch_hdmi.c | |
| parent | 5a61358433b1f89b500f2c365746c73cb7a27e2f (diff) | |
ALSA: hda - hdmi: Add ELD emulation for ATI/AMD codecs
ATI/AMD HDMI/DP codecs do not include standard HDA ELD (EDID-like data)
support.
In place of providing access to an ELD buffer, various vendor-specific
verbs are provided to provide the relevant information. Revision ID 3
and later (0x100300 as reported by procfs codec#X) have support for
providing more information than the previous revisions (but only if
supported by the display driver).
Generate ELD from the information provided by the vendor-specific verbs
on ATI/AMD codecs.
The specification is available at:
http://www.x.org/docs/AMD/AMD_HDA_verbs_v2.pdf
v2: moved code to hda_eld.c and cleaned it up
v3: adapted to hdmi_ops infrastructure
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Tested-by: Peter Frühberger <fritsch@xbmc.org> # v2
Tested-by: Olivier Langlois <olivier@trillion01.com> # v2
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_hdmi.c')
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 1114be018e5a..0307ae87bef3 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2821,6 +2821,14 @@ static int patch_nvhdmi_8ch_7x(struct hda_codec *codec) #define ATI_MULTICHANNEL_MODE_PAIRED 0 #define ATI_MULTICHANNEL_MODE_SINGLE 1 +static int atihdmi_pin_get_eld(struct hda_codec *codec, hda_nid_t nid, + unsigned char *buf, int *eld_size) +{ + /* call hda_eld.c ATI/AMD-specific function */ + return snd_hdmi_get_eld_ati(codec, nid, buf, eld_size, + is_amdhdmi_rev3_or_later(codec)); +} + static void atihdmi_pin_setup_infoframe(struct hda_codec *codec, hda_nid_t pin_nid, int ca, int active_channels, int conn_type) { @@ -3048,6 +3056,7 @@ static int patch_atihdmi(struct hda_codec *codec) spec = codec->spec; + spec->ops.pin_get_eld = atihdmi_pin_get_eld; 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; |