BMC/Intel-BMC/linux.git/drivers/gpu/drm/rcar-du, branch dev-4.3

drm/atomic: pass old crtc state to atomic_begin/flush.

2015-07-27T14:23:22+00:00

In intel it's useful to keep track of some state changes with old crtc state vs new state, for example to disable initial planes or when a modeset's prevented during fastboot. Cc: dri-devel@lists.freedesktop.org Signed-off-by: Maarten Lankhorst Reviewed-by: Ander Conselvan de Oliveira [danvet: squash in fixup for exynos provided by Maarten.] Signed-off-by: Daniel Vetter

drm: rcar-du: Use the drm atomic state duplication helpers for planes

2015-06-16T11:25:55+00:00

Ensure that the duplicate and destroy plane state operations will always be in sync with the DRM core implementation of the plane state by using the __drm_atomic_helper_plane_duplicate_state() and __drm_atomic_helper_plane_destroy_state() functions designed especially for this purpose. Signed-off-by: Laurent Pinchart

drm: rcar-du: Clean up planes in the error paths of .atomic_commit()

2015-06-16T11:25:54+00:00

When the .atomic_commit() handler fails, clean up planes previoulsy prepared by drm_atomic_helper_prepare_planes() with a call to drm_atomic_helper_cleanup_planes(). Signed-off-by: Laurent Pinchart

drm: rcar-du: Convert rcar_du_encoders_init_one() return value to 0/<0

2015-06-16T11:25:53+00:00

The function returns 1 on success, and either 0 or a negative error code on failure. As the 0 and negative values don't need to be differentiated by the caller, convert it to the usual scheme of returning 0 on success and a negative error code on failure. Signed-off-by: Laurent Pinchart

drm: rcar-du: Clarify error message when encoder initialization fails

2015-06-16T11:25:52+00:00

A failure to initialize an encoder currently prints an error message in the kernel log without mentioning which encoder failed to initialize. To help debugging initialization issues print the encoder DT node name. This requires moving the error message to the rcar_du_encoders_init_one function and refactoring it slightly. Signed-off-by: Laurent Pinchart

drm: rcar-du: Fix crash with groups that have less than 9 planes

2015-06-16T11:25:43+00:00

Commit 917de180379d ("drm: rcar-du: Implement universal plane support") made the number of planes per group dynamic, but didn't update all loops over the planes array, resulting in out-of-bound accesses on DU instances that have an odd number of CRTCs (such as the R8A7790). Fix it. Fixes: 917de180379d ("drm: rcar-du: Implement universal plane support") Cc: stable@vger.kernel.org Signed-off-by: Laurent Pinchart

drm: rcar-du: Disable all planes when stopping the CRTC

2015-06-16T11:15:47+00:00

The DSnPR plane configuration registers are updated on vblank, and no vblank will occur once the CRTC is stopped. We thus can't only disable planes right before starting the CRTC as it would start scanning out immediately from old frame buffers until the next vblank. Fix the problem by disabling all planes when stopping the CRTC and wait for the change to take effect. This increases the CRTC stop delay, especially when multiple CRTCs are stopped in one operation as we now wait for one vblank per CRTC. Whether this can be improved needs to be researched. Signed-off-by: Laurent Pinchart

drm: rcar-du: Print the error value when DRM/KMS init fails

2015-06-16T11:15:47+00:00

This helps debugging probe failures. Signed-off-by: Laurent Pinchart

drm: rcar-du: Split planes pre-association 4/4 between CRTCs

2015-05-25T12:34:13+00:00

If we have more than one CRTCs in a group pre-associate planes 0-3 with CRTC 0 and planes 4-7 with CRTC 1 to minimize flicker occurring when the association is changed. The pre-association could be controlled by a module parameter if needed. Signed-off-by: Laurent Pinchart

drm: rcar-du: Store the number of CRTCs per group in the group structure

2015-05-25T12:34:12+00:00

The number of CRTCs in a group is only used to implement plane initialization for now, but is also needed to implement pre-association of planes to CRTCs. Store it in the group structure instead of computing it on demand. Signed-off-by: Laurent Pinchart