With commit 222ec1618c3ace ("drm: Add aspect ratio parsing in DRM layer") the drm core started honoring the picture_aspect_ratio field when comparing two drm_display_modes. Prior to that it was ignored. When the CVBS encoder driver was initially submitted there was no aspect ratio check.
Switch from drm_mode_equal() to drm_mode_match() without DRM_MODE_MATCH_ASPECT_RATIO to fix "kmscube" and X.org output using the CVBS connector. When (for example) kmscube sets the output mode when using the CVBS connector it passes HDMI_PICTURE_ASPECT_NONE, making the drm_mode_equal() fail as it include the aspect ratio.
Prior to this patch kmscube reported: failed to set mode: Invalid argument
The CVBS mode checking in the sun4i (drivers/gpu/drm/sun4i/sun4i_tv.c sun4i_tv_mode_to_drm_mode) and ZTE (drivers/gpu/drm/zte/zx_tvenc.c tvenc_mode_{pal,ntsc}) drivers don't set the "picture_aspect_ratio" at all. The Meson VPU driver does not rely on the aspect ratio for the CVBS output so we can safely decouple it from the hdmi_picture_aspect setting.
Fixes: 222ec1618c3ace ("drm: Add aspect ratio parsing in DRM layer") Fixes: bbbe775ec5b5da ("drm: Add support for Amlogic Meson Graphic Controller") Signed-off-by: Martin Blumenstingl martin.blumenstingl@googlemail.com --- drivers/gpu/drm/meson/meson_venc_cvbs.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/meson/meson_venc_cvbs.c b/drivers/gpu/drm/meson/meson_venc_cvbs.c index 6b8a074e4ff4..1bd6b6d15ffb 100644 --- a/drivers/gpu/drm/meson/meson_venc_cvbs.c +++ b/drivers/gpu/drm/meson/meson_venc_cvbs.c @@ -72,7 +72,11 @@ meson_cvbs_get_mode(const struct drm_display_mode *req_mode) for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) { struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
- if (drm_mode_equal(req_mode, &meson_mode->mode)) + if (drm_mode_match(req_mode, &meson_mode->mode, + DRM_MODE_MATCH_TIMINGS | + DRM_MODE_MATCH_CLOCK | + DRM_MODE_MATCH_FLAGS | + DRM_MODE_MATCH_3D_FLAGS)) return meson_mode; }