The CCS plane stride must be fixed on TGL, as it's not configurable for
the display. Instead the HW has a hardwired logic to determine it from
the main plane stride. Make sure userspace passes in the correct stride.
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 641ea24539eb..7c52591172e1 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2620,6 +2620,11 @@ bool is_ccs_modifier(u64 modifier)
modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
}
+static int gen12_ccs_aux_stride(struct drm_framebuffer *fb, int ccs_plane)
+{
+ return DIV_ROUND_UP(fb->pitches[ccs_to_main_plane(fb, ccs_plane)], 512) * 64;
+}
+
u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
u32 pixel_format, u64 modifier)
{
@@ -16530,6 +16535,16 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
goto err;
}
+ if (is_gen12_ccs_plane(fb, i)) {
+ int ccs_aux_stride = gen12_ccs_aux_stride(fb, i);
+
+ if (fb->pitches[i] != ccs_aux_stride) {
+ DRM_DEBUG_KMS("ccs aux plane %d pitch (%d) must be %d\n",
+ i, fb->pitches[i], ccs_aux_stride);
+ goto err;
+ }
+ }
+
fb->obj[i] = &obj->base;
}
--
2.22.0
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
