The ast driver detects support for display modes from hardware features and internal mode tables. Streamline the detection code and put all validation into a single place.
Patches 1 to 6 refactor the code for detecting support for widescreen modes. Regular 4:3 modes are supported by all hardware Gens; support for widescreen modes differs among hardware Gens and individual boards. The series moves all hardware-related code into a single helper function that set state flags accordingly. Other places within the driver then refer to these flags. Building upon this, patches 7 to 16 refactor display-mode validation. The ast driver contains a list of display modes supported by the VBIOS. The series changes the driver to validate DRM display modes against the VBIOS modes. Tested on various hardware Gens and display modes. v2: - move mode detection into helper functions (Jocelyn) - replace various large switch statements with LUTs (Jocelyn) - set max width/height from fullhd flag Thomas Zimmermann (16): drm/ast: Remove 1152x864 from list of widescreen resolutions drm/ast: Align naming in widescreen detection code to manual drm/ast: Rename support_wide_screen to support_wsxga_p drm/ast: Reorganize widescreen test around hardware Gens drm/ast: Add support_fullhd flag to struct ast_device drm/ast: Add support_wuxga flag to struct ast_device drm/ast: Always validate H/V sync flags drm/ast: Find VBIOS mode from regular display size drm/ast: Add empty initializer for VBIOS modes drm/ast: Add helpers for VBIOS mode lookup drm/ast: Validate DRM display modes against VBIOS modes drm/ast: Inline ast_get_vbios_mode_info() drm/ast: astdp: Rework display-mode setting drm/ast: astdp: Look up mode index from table drm/ast: Remove struct ast_vbios_mode_info drm/ast: Only look up VBIOS mode on full modesets drivers/gpu/drm/ast/Makefile | 1 + drivers/gpu/drm/ast/ast_dp.c | 168 +++++++++-------- drivers/gpu/drm/ast/ast_drv.c | 2 +- drivers/gpu/drm/ast/ast_drv.h | 30 +-- drivers/gpu/drm/ast/ast_main.c | 102 +++++++--- drivers/gpu/drm/ast/ast_mode.c | 315 +++++++++---------------------- drivers/gpu/drm/ast/ast_post.c | 2 +- drivers/gpu/drm/ast/ast_reg.h | 30 ++- drivers/gpu/drm/ast/ast_tables.h | 187 +----------------- drivers/gpu/drm/ast/ast_vbios.c | 241 +++++++++++++++++++++++ drivers/gpu/drm/ast/ast_vbios.h | 108 +++++++++++ 11 files changed, 628 insertions(+), 558 deletions(-) create mode 100644 drivers/gpu/drm/ast/ast_vbios.c create mode 100644 drivers/gpu/drm/ast/ast_vbios.h base-commit: 9afc49c1b29a25d9efba5e29e43c9ce3986e569c -- 2.48.1
