2020-05-27 13:12:04 +00:00
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From b79a33509a3aa863cdf54d24e1a4a0cc2c6fe84c Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Thu, 6 Feb 2020 14:52:42 +0100
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Subject: [PATCH] drm/vc4: plane: Create more planes
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Let's now create more planes that can be affected to all the CRTCs.
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vc4 has 3 CRTCs, 1 primary and 1 cursor each, and was having 24 (8
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planes per CRTC) overlays.
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However, vc5 has 5 CRTCs, so keeping the same logic would put us at 50
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planes which is well above the 32 planes limit imposed by DRM.
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Using 16 seems like a good tradeoff between staying under 32 and yet
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providing enough planes.
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_plane.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_plane.c
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+++ b/drivers/gpu/drm/vc4/vc4_plane.c
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2021-02-17 10:58:14 +00:00
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@@ -1463,7 +1463,7 @@ int vc4_plane_create_additional_planes(s
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2020-05-27 13:12:04 +00:00
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* modest number of planes to expose, that should hopefully
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* still cover any sane usecase.
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*/
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- for (i = 0; i < 8; i++) {
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+ for (i = 0; i < 16; i++) {
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struct drm_plane *plane =
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vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);
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