diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0546-drm-vc4-Max-resolution-of-7680-is-conditional-on-bei.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0546-drm-vc4-Max-resolution-of-7680-is-conditional-on-bei.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0546-drm-vc4-Max-resolution-of-7680-is-conditional-on-bei.patch b/target/linux/bcm27xx/patches-4.19/950-0546-drm-vc4-Max-resolution-of-7680-is-conditional-on-bei.patch new file mode 100644 index 0000000000..83e1845ff9 --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0546-drm-vc4-Max-resolution-of-7680-is-conditional-on-bei.patch @@ -0,0 +1,38 @@ +From bce8c3dc146e3287519d5f6bb965dc2458e6684d Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Thu, 30 May 2019 15:55:15 +0100 +Subject: [PATCH] drm/vc4: Max resolution of 7680 is conditional on + being Pi4 + +The max resolution had been increased from 2048 to 7680 for all +platforms. This code is common with Pi0-3 which have a max render +target for GL of 2048, therefore the increased resolution has to +be conditional on the platform. +Switch based on whether the bcm2835-v3d node is found, as that is +not present on Pi4. (There is a potential configuration on Pi0-3 +with no v3d, but this is very unlikely). + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/gpu/drm/vc4/vc4_kms.c | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_kms.c +@@ -429,8 +429,14 @@ int vc4_kms_load(struct drm_device *dev) + return ret; + } + +- dev->mode_config.max_width = 7680; +- dev->mode_config.max_height = 7680; ++ if (!drm_core_check_feature(dev, DRIVER_RENDER)) { ++ /* No V3D as part of vc4. Assume this is Pi4. */ ++ dev->mode_config.max_width = 7680; ++ dev->mode_config.max_height = 7680; ++ } else { ++ dev->mode_config.max_width = 2048; ++ dev->mode_config.max_height = 2048; ++ } + dev->mode_config.funcs = &vc4_mode_funcs; + dev->mode_config.preferred_depth = 24; + dev->mode_config.async_page_flip = true; |