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video/hdmi: Add audio_infoframe packing for DP

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Similar to HDMI, DP uses audio infoframes as well which are structured
very similar to the HDMI ones.

This patch adds a helper function to pack the HDMI audio infoframe for
DP, called hdmi_audio_infoframe_pack_for_dp().
hdmi_audio_infoframe_pack_only() is split into two parts. One of them
packs the payload only and can be used for HDMI and DP.

Also constify the frame parameter in hdmi_audio_infoframe_check() as
it is passed to hdmi_audio_infoframe_check_only() which expects a const.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220901044149.16782-3-rex-bc.chen@mediatek.com
This commit is contained in:
Markus Schneider-Pargmann
2022-09-01 12:41:41 +08:00
committed by Dmitry Osipenko
parent a2ce58e8f9
commit f89aa0b6db
3 changed files with 71 additions and 20 deletions
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2
include/drm/display/drm_dp.h
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@@ -1536,6 +1536,8 @@ enum drm_dp_phy {
#define DP_SDP_VSC_EXT_CEA 0x21 /* DP 1.4 */
/* 0x80+ CEA-861 infoframe types */
#define DP_SDP_AUDIO_INFOFRAME_HB2 0x1b
/**
* struct dp_sdp_header - DP secondary data packet header
* @HB0: Secondary Data Packet ID