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drm/bridge: dw-hdmi: truly enforce 420-only formats when drm mode demands it

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The current output bus format selection logic is enforcing YUV420 even
when the drm mode allows for other bus formats as well.
Fix it by adding check for 420-only drm modes.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/6e6a217c180584a67ed7992c785764ba54af9151.1687702042.git.adrian.larumbe@collabora.com
This commit is contained in:
Adrián Larumbe 2023-06-25 15:17:16 +01:00 committed by Neil Armstrong
parent 7ed40ff1d1
commit f3710b424a
1 changed files with 4 additions and 3 deletions

7
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

@ -2710,9 +2710,10 @@ static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
/* Default 8bit fallback */
output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24;
*num_output_fmts = i;
return output_fmts;
if (drm_mode_is_420_only(info, mode)) {
*num_output_fmts = i;
return output_fmts;
}
}
/*