As intel_fb_plane_get_subsampling() returns the subsampling factor wrt.
its main plane, for a CCS plane we need to apply both the main and the
CCS plane's subsampling factor on the FB's dimensions to get the CCS
plane's dimensions.
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Cc: Mika Kahola <mika.kahola@xxxxxxxxx>
Cc: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 2c2450d3469b..d5128e900660 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2913,11 +2913,15 @@ intel_fb_check_ccs_xy(struct drm_framebuffer *fb, int ccs_plane, int x, int y)
static void
intel_fb_plane_dims(int *w, int *h, struct drm_framebuffer *fb, int color_plane)
{
+ int main_plane = is_ccs_plane(fb, color_plane) ?
+ ccs_to_main_plane(fb, color_plane) : 0;
+ int main_hsub, main_vsub;
int hsub, vsub;
+ intel_fb_plane_get_subsampling(&main_hsub, &main_vsub, fb, main_plane);
intel_fb_plane_get_subsampling(&hsub, &vsub, fb, color_plane);
- *w = fb->width / hsub;
- *h = fb->height / vsub;
+ *w = fb->width / main_hsub / hsub;
+ *h = fb->height / main_vsub / vsub;
}
/*
--
2.23.1
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