diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0552-drm-vc4-plane-Create-overlays-for-any-CRTC.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0552-drm-vc4-plane-Create-overlays-for-any-CRTC.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0552-drm-vc4-plane-Create-overlays-for-any-CRTC.patch b/target/linux/bcm27xx/patches-5.4/950-0552-drm-vc4-plane-Create-overlays-for-any-CRTC.patch new file mode 100644 index 0000000000..54d04e59e1 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0552-drm-vc4-plane-Create-overlays-for-any-CRTC.patch @@ -0,0 +1,70 @@ +From b65167e0bcce67f2e7b7e813dba536f1cca3ef9f Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime@cerno.tech> +Date: Thu, 6 Feb 2020 14:50:06 +0100 +Subject: [PATCH] drm/vc4: plane: Create overlays for any CRTC + +Now that we have everything in place, we can now register all the overlay +planes that can be assigned to all the CRTCs. + +This has two side effects: + + - The number of overlay planes is reduced from 24 to 8. This is temporary + and will be increased again in the next patch. + + - The ID of the various planes is changed again, and we will now have all + the primary planes, then all the overlay planes and finally the cursor + planes. This shouldn't cause any issue since the ordering between + primary, overlay and cursor planes is preserved. + +Signed-off-by: Maxime Ripard <maxime@cerno.tech> +--- + drivers/gpu/drm/vc4/vc4_plane.c | 35 +++++++++++++++++---------------- + 1 file changed, 18 insertions(+), 17 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_plane.c ++++ b/drivers/gpu/drm/vc4/vc4_plane.c +@@ -1444,26 +1444,27 @@ int vc4_plane_create_additional_planes(s + struct drm_crtc *crtc; + unsigned int i; + +- drm_for_each_crtc(crtc, drm) { +- /* Set up some arbitrary number of planes. We're not limited +- * by a set number of physical registers, just the space in +- * the HVS (16k) and how small an plane can be (28 bytes). +- * However, each plane we set up takes up some memory, and +- * increases the cost of looping over planes, which atomic +- * modesetting does quite a bit. As a result, we pick a +- * modest number of planes to expose, that should hopefully +- * still cover any sane usecase. +- */ +- for (i = 0; i < 8; i++) { +- struct drm_plane *plane = +- vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY); ++ /* Set up some arbitrary number of planes. We're not limited ++ * by a set number of physical registers, just the space in ++ * the HVS (16k) and how small an plane can be (28 bytes). ++ * However, each plane we set up takes up some memory, and ++ * increases the cost of looping over planes, which atomic ++ * modesetting does quite a bit. As a result, we pick a ++ * modest number of planes to expose, that should hopefully ++ * still cover any sane usecase. ++ */ ++ for (i = 0; i < 8; i++) { ++ struct drm_plane *plane = ++ vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY); + +- if (IS_ERR(plane)) +- continue; ++ if (IS_ERR(plane)) ++ continue; + +- plane->possible_crtcs = drm_crtc_mask(crtc); +- } ++ plane->possible_crtcs = ++ GENMASK(drm->mode_config.num_crtc - 1, 0); ++ } + ++ drm_for_each_crtc(crtc, drm) { + /* Set up the legacy cursor after overlay initialization, + * since we overlay planes on the CRTC in the order they were + * initialized. |