[PATCH 11/31] drm/amd/display: Fallback to SW cursor if SubVP + cursor too big

[Alex Hung]

From: Alvin Lee <Alvin.Lee2 at amd.com>

[Description]
- For SubVP cursor cannot be cached in MALL, therefore
we will switch to SW cursor if the cursor size exceeds
what can fit in the local DCN buffers (64x64x4)
- Returning false / failure for set_cursor_attributes will
fallback to SW cursor

Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Alex Hung <alex.hung at amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2 at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 6752ca44e6e0..f62d50901d92 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -328,6 +328,11 @@ bool dc_stream_set_cursor_attributes(
 	}
 
 	dc = stream->ctx->dc;
+
+	if (attributes->height * attributes->width * 4 > 16384)
+		if (stream->mall_stream_config.type == SUBVP_MAIN)
+			return false;
+
 	stream->cursor_attributes = *attributes;
 
 	dc_z10_restore(dc);
-- 
2.37.1