Hi,
This is v2 of the series.
The first patch fixes legacy gamma table for HW which have a degamma lut block before CTM block, but no gamma lut after the CTM. This will allow us to add CTM support to omapdrm, which only has "pre-gamma" i.e. de-gamma table.
The second one cleans up the legacy gamma support a bit by handling legacy gamma for modern drivers in the drm core.
Changes in v2: - Use bitfields for has_gamma_prop and has_degamma_prop - Drop use_degamma variable - Also fix gamma/degamma handling in setcmap_atomic, which I had missed earlier. - Fix comments that were still referring to drm_atomic_helper_legacy_gamma_set - Drop drm_atomic_helper_legacy_gamma_set use from intel_display.c which I had missed earlier. - Move the declaration of the new functions to drm_crtc_internal.h
I didn't add Laurent's RBs as I felt the changes were too big to keep the RB.
Ville has a WIP branch at
git://github.com/vsyrjala/linux.git fb_helper_c8_lut_4
which does more extensive cleanups to the gamma handling. That work is slightly overlapping with this series, but afaics the concepts do not conflict as such (but the code changes do conflict).
Tomi
Tomi Valkeinen (2): drm: add legacy support for using degamma for gamma drm: automatic legacy gamma support
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 - .../gpu/drm/arm/display/komeda/komeda_crtc.c | 1 - drivers/gpu/drm/arm/malidp_crtc.c | 1 - drivers/gpu/drm/armada/armada_crtc.c | 1 - drivers/gpu/drm/ast/ast_mode.c | 1 - .../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 1 - drivers/gpu/drm/drm_atomic_helper.c | 70 ---------- drivers/gpu/drm/drm_color_mgmt.c | 122 ++++++++++++++++-- drivers/gpu/drm/drm_crtc_internal.h | 6 + drivers/gpu/drm/drm_fb_helper.c | 21 +-- drivers/gpu/drm/i915/display/intel_display.c | 1 - drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 - drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 1 - drivers/gpu/drm/nouveau/dispnv50/head.c | 2 - drivers/gpu/drm/omapdrm/omap_crtc.c | 1 - drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 1 - drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 1 - drivers/gpu/drm/stm/ltdc.c | 1 - drivers/gpu/drm/vc4/vc4_crtc.c | 1 - drivers/gpu/drm/vc4/vc4_txp.c | 1 - include/drm/drm_atomic_helper.h | 4 - include/drm/drm_crtc.h | 3 + 22 files changed, 135 insertions(+), 109 deletions(-)