diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0936-drm-vc4-Increase-the-number-of-planes-per-crtc-in-FK.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0936-drm-vc4-Increase-the-number-of-planes-per-crtc-in-FK.patch | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0936-drm-vc4-Increase-the-number-of-planes-per-crtc-in-FK.patch b/target/linux/bcm27xx/patches-5.4/950-0936-drm-vc4-Increase-the-number-of-planes-per-crtc-in-FK.patch new file mode 100644 index 0000000000..b2b1e7f46d --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0936-drm-vc4-Increase-the-number-of-planes-per-crtc-in-FK.patch @@ -0,0 +1,105 @@ +From 078e6dfcff1fc4ef0ee3b29a5f94403624c2e7ac Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Mon, 20 Jul 2020 16:42:57 +0100 +Subject: [PATCH] drm/vc4: Increase the number of planes per crtc in + FKMS. + +The number assigned was arbitrary as one primary, one overlay, +and one cursor. +The number has to be below the DRM limit of 32 planes total, +and the current firmware API limit of 16 planes total. + +Increase the number to 8 planes per crtc (1 primary, +6 overlay, and a cursor). + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 54 ++++++++++---------------- + 1 file changed, 21 insertions(+), 33 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -48,7 +48,7 @@ struct vc4_fkms { + bool bcm2711; + }; + +-#define PLANES_PER_CRTC 3 ++#define PLANES_PER_CRTC 8 + + struct set_plane { + u8 display; +@@ -1742,7 +1742,6 @@ static int vc4_fkms_create_screen(struct + struct vc4_crtc *vc4_crtc; + struct vc4_fkms_encoder *vc4_encoder; + struct drm_crtc *crtc; +- struct drm_plane *primary_plane, *overlay_plane, *cursor_plane; + struct drm_plane *destroy_plane, *temp; + struct mailbox_blank_display blank = { + .tag1 = {RPI_FIRMWARE_FRAMEBUFFER_SET_DISPLAY_NUM, 4, 0, }, +@@ -1750,7 +1749,8 @@ static int vc4_fkms_create_screen(struct + .tag2 = { RPI_FIRMWARE_FRAMEBUFFER_BLANK, 4, 0, }, + .blank = 1, + }; +- int ret; ++ struct drm_plane *planes[PLANES_PER_CRTC]; ++ int ret, i; + + vc4_crtc = devm_kzalloc(dev, sizeof(*vc4_crtc), GFP_KERNEL); + if (!vc4_crtc) +@@ -1763,38 +1763,26 @@ static int vc4_fkms_create_screen(struct + /* Blank the firmware provided framebuffer */ + rpi_firmware_property_list(vc4->firmware, &blank, sizeof(blank)); + +- primary_plane = vc4_fkms_plane_init(drm, DRM_PLANE_TYPE_PRIMARY, +- display_ref, +- 0 + (display_idx * PLANES_PER_CRTC) +- ); +- if (IS_ERR(primary_plane)) { +- dev_err(dev, "failed to construct primary plane\n"); +- ret = PTR_ERR(primary_plane); +- goto err; +- } +- +- overlay_plane = vc4_fkms_plane_init(drm, DRM_PLANE_TYPE_OVERLAY, +- display_ref, +- 1 + (display_idx * PLANES_PER_CRTC) +- ); +- if (IS_ERR(overlay_plane)) { +- dev_err(dev, "failed to construct overlay plane\n"); +- ret = PTR_ERR(overlay_plane); +- goto err; +- } +- +- cursor_plane = vc4_fkms_plane_init(drm, DRM_PLANE_TYPE_CURSOR, +- display_ref, +- 2 + (display_idx * PLANES_PER_CRTC) +- ); +- if (IS_ERR(cursor_plane)) { +- dev_err(dev, "failed to construct cursor plane\n"); +- ret = PTR_ERR(cursor_plane); +- goto err; ++ for (i = 0; i < PLANES_PER_CRTC; i++) { ++ planes[i] = vc4_fkms_plane_init(drm, ++ (i == 0) ? ++ DRM_PLANE_TYPE_PRIMARY : ++ (i == PLANES_PER_CRTC - 1) ? ++ DRM_PLANE_TYPE_CURSOR : ++ DRM_PLANE_TYPE_OVERLAY, ++ display_ref, ++ i + (display_idx * PLANES_PER_CRTC) ++ ); ++ if (IS_ERR(planes[i])) { ++ dev_err(dev, "failed to construct plane %u\n", i); ++ ret = PTR_ERR(planes[i]); ++ goto err; ++ } + } + +- drm_crtc_init_with_planes(drm, crtc, primary_plane, cursor_plane, +- &vc4_crtc_funcs, NULL); ++ drm_crtc_init_with_planes(drm, crtc, planes[0], ++ planes[PLANES_PER_CRTC - 1], &vc4_crtc_funcs, ++ NULL); + drm_crtc_helper_add(crtc, &vc4_crtc_helper_funcs); + + vc4_encoder = devm_kzalloc(dev, sizeof(*vc4_encoder), GFP_KERNEL); |