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| 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/hda_local.h | |
| parent | ALSA: hda - hdmi: Add ATI/AMD multi-channel audio support (diff) | |
| download | linux-dev-89250f84644676c1ed6a09acef1033e14596a402.tar.xz linux-dev-89250f84644676c1ed6a09acef1033e14596a402.zip | |
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/hda_local.h')
| -rw-r--r-- | sound/pci/hda/hda_local.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index 46cddd4c7b72..d398b648bb5d 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -763,6 +763,10 @@ void snd_hdmi_show_eld(struct parsed_hdmi_eld *e); void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e, struct hda_pcm_stream *hinfo); +int snd_hdmi_get_eld_ati(struct hda_codec *codec, hda_nid_t nid, + unsigned char *buf, int *eld_size, + bool rev3_or_later); + #ifdef CONFIG_PROC_FS void snd_hdmi_print_eld_info(struct hdmi_eld *eld, struct snd_info_buffer *buffer); |