From: "Sharma, Shashank" <shashank.sharma@xxxxxxxxx> Current DRM layer functions don't parse aspect ratio information while converting a user mode->kernel mode or vice versa. This causes modeset to pick mode with wrong aspect ratio, eventually causing failures in HDMI compliance test cases, due to wrong VIC. This patch adds aspect ratio information in DRM's mode conversion and mode comparision functions, to make sure kernel picks mode with right aspect ratio (as per the VIC). Background: This patch was once reviewed and merged, and later reverted due to lack of DRM cap protection. This is a re-spin of this patch, this time with DRM cap protection, to avoid aspect ratio information, when the client doesn't request for it. Review link: https://pw-emeril.freedesktop.org/patch/104068/ Background discussion: https://patchwork.kernel.org/patch/9379057/ Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx> Signed-off-by: Lin, Jia <lin.a.jia@xxxxxxxxx> Signed-off-by: Akashdeep Sharma <akashdeep.sharma@xxxxxxxxx> Reviewed-by: Jim Bride <jim.bride@xxxxxxxxxxxxxxx> (V2) Reviewed-by: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx> (V4) Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Jim Bride <jim.bride@xxxxxxxxxxxxxxx> Cc: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx> Cc: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx> V3: modified the aspect-ratio check in drm_mode_equal as per new flags provided by Ville. https://patchwork.freedesktop.org/patch/188043/ V4: rebase V5: rebase --- drivers/gpu/drm/drm_modes.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index ca4c5cc..25140b9 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1050,7 +1050,8 @@ bool drm_mode_equal(const struct drm_display_mode *mode1, DRM_MODE_MATCH_TIMINGS | DRM_MODE_MATCH_CLOCK | DRM_MODE_MATCH_FLAGS | - DRM_MODE_MATCH_3D_FLAGS); + DRM_MODE_MATCH_3D_FLAGS| + DRM_MODE_MATCH_ASPECT_RATIO); } EXPORT_SYMBOL(drm_mode_equal); @@ -1649,6 +1650,21 @@ void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, out->vrefresh = in->vrefresh; out->flags = in->flags; out->type = in->type; + out->flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; + + switch (in->picture_aspect_ratio) { + case HDMI_PICTURE_ASPECT_4_3: + out->flags |= DRM_MODE_FLAG_PIC_AR_4_3; + break; + case HDMI_PICTURE_ASPECT_16_9: + out->flags |= DRM_MODE_FLAG_PIC_AR_16_9; + break; + case HDMI_PICTURE_ASPECT_RESERVED: + default: + out->flags |= DRM_MODE_FLAG_PIC_AR_NONE; + break; + } + strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); out->name[DRM_DISPLAY_MODE_LEN-1] = 0; } @@ -1693,6 +1709,21 @@ int drm_mode_convert_umode(struct drm_device *dev, strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); out->name[DRM_DISPLAY_MODE_LEN-1] = 0; + /* Clearing picture aspect ratio bits from out flags */ + out->flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; + + switch (in->flags & DRM_MODE_FLAG_PIC_AR_MASK) { + case DRM_MODE_FLAG_PIC_AR_4_3: + out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_4_3; + break; + case DRM_MODE_FLAG_PIC_AR_16_9: + out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_16_9; + break; + default: + out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE; + break; + } + out->status = drm_mode_validate_driver(dev, out); if (out->status != MODE_OK) goto out; -- 2.7.4 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
