-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 621/806] 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;