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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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7
include/linux/hdmi.h
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@ -336,7 +336,12 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
void *buffer, size_t size);
ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
void *buffer, size_t size);
int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame);
int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame);
struct dp_sdp;
ssize_t
hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame,
struct dp_sdp *sdp, u8 dp_version);
enum hdmi_3d_structure {
HDMI_3D_STRUCTURE_INVALID = -1,