Provide drm_atomic_helper_check_crtc_state() for validating a CRTC state against common constraints. As many CRTC need a primary plane to work correctly, add this as the first test.
The simple-KMS helpers already contain related code. Convert it to the new helper. Also add this test to ast.
The simple-kms changes were tested with simpledrm. The ast changes were tested in AST2300 hardware.
Thomas Zimmermann (3): drm/atomic-helper: Add helper drm_atomic_helper_check_crtc_state() drm/simple-kms: Use drm_atomic_helper_check_crtc_state() drm/ast: Enable primary plane with CRTC
drivers/gpu/drm/ast/ast_mode.c | 13 ++++-- drivers/gpu/drm/drm_atomic_helper.c | 55 +++++++++++++++++++++++++ drivers/gpu/drm/drm_simple_kms_helper.c | 14 +++---- include/drm/drm_atomic_helper.h | 2 + 4 files changed, 72 insertions(+), 12 deletions(-)
base-commit: 822a8442835012ce405080cb40f6317ef1e854ac