Provide the basic support to enable using YUV420 as an RGB fallback when computing the best output format and color depth.
Signed-off-by: Cristian Ciocaltea <cristian.ciocal...@collabora.com> --- Changes in v5: - Collected R-b/A-b tags from Maxime and Dmitry - Got rid of the condition inversion in "drm/connector: hdmi: Use YUV420 output format as an RGB fallback" (Maxime) - Added new patch "drm/tests: hdmi: Switch to 'void *' type for EDID data" and updated "drm/tests: hdmi: Add macro to simplify EDID setup" accordingly (Jani) - Dropped EDEADLK-related patches and used explicit error handling in the new tests for now - to be handled in a dedicated series: * "drm/tests: helpers: Add a (re)try helper variant to enable CRTC connector" * "drm/tests: hdmi: Switch to drm_kunit_helper_try_enable_crtc_connector()" * "drm/tests: hdmi: Add macro to support EDEADLK handling" * "drm/tests: hdmi: Restart atomic sequence on EDEADLK" - Removed "drm/tests: hdmi: Add test for unsupported RGB/YUV420 mode" which requires a rework, including a new test EDID - to be submitted separately - Rebased series onto drm-misc-next from 2025-05-26 - Link to v4: https://lore.kernel.org/r/20250425-hdmi-conn-yuv-v4-0-5e55e2aaa...@collabora.com Changes in v4: - Collected R-b tags from Maxime and Dmitry - Squashed "drm/connector: hdmi: Rename hdmi_compute_format() internal helper" into "drm/connector: hdmi: Factor out bpc and format computation logic" and moved the TODO hunk to next patch (Maxime) - Logged a debug message in "drm/connector: hdmi: Use YUV420 output format as an RGB fallback" for hdmi_compute_format_bpc() (Maxime) - Reworded "drm/tests: hdmi: Fixup CamelCase warning" to "drm/tests: hdmi: Replace '[_]MHz' with 'mhz'" - Reworked the patches simplifying EDID setup: ended up with just a new __connector_hdmi_init() function and a single helper macro (Maxime) - Added new patches to handle EDEADLK: * "drm/tests: helpers: Add a (re)try helper variant to enable CRTC connector" * "drm/tests: hdmi: Switch to drm_kunit_helper_try_enable_crtc_connector()" * "drm/tests: hdmi: Add macro to support EDEADLK handling" * "drm/tests: hdmi: Restart atomic sequence on EDEADLK" * "drm/tests: hdmi: Switch to drm_atomic_get_new_connector_state() where possible" - Updated all YUV420 test cases: * Moved function renames and EDID content to dedicated patches * Improved error handling * Reworded a few comment blocks * Hand-crafted the state and used drm_atomic_check_only() in drm_test_check_driver_unsupported_fallback_yuv420() - Added "drm/tests: hdmi: Add test for unsupported RGB/YUV420 mode" - Rebased series onto drm-misc-next from 2025-04-22 - Link to v3: https://lore.kernel.org/r/20250326-hdmi-conn-yuv-v3-0-294d3ebbb...@collabora.com Changes in v3: - Collected R-b tags from Dmitry and Maxime - Updated debug messages in "drm/connector: hdmi: Add support for YUV420 format verification" to avoid referencing VIC (Maxime) - Reworked "drm/connector: hdmi: Use YUV420 output format as an RGB fallback" and moved some parts to separate patches: * drm/connector: hdmi: Add missing bpc debug info to hdmi_try_format_bpc() * drm/connector: hdmi: Rename hdmi_compute_format() internal helper * drm/connector: hdmi: Factor out bpc and format computation logic - Reworked "drm/tests: hdmi: Add macros to simplify EDID setup" by renaming the new helpers and moving the conversion to separate patches (Maxime): * drm/tests: hdmi: Fixup CamelCase warning * drm/tests: hdmi: Replace open coded EDID setup * drm/tests: hdmi: Drop unused drm_kunit_helper_connector_hdmi_init_funcs() - Moved connector_hdmi_init_with_edid_funcs() changes from "drm/tests: hdmi: Add limited range tests for YUV420 mode") to "drm/tests: hdmi: Setup ycbcr_420_allowed before initializing connector" - Got rid of the floating-point operation in "drm/tests: hdmi: Add max TMDS rate fallback tests for YUV420 mode" in order to fix the build errors reported by some kernel test robots - Added new patch "drm/tests: hdmi: Add test for unsuccessful forced fallback to YUV420" - Rebased series onto drm-misc-next from 2025-03-25 - Link to v2: https://lore.kernel.org/r/20250311-hdmi-conn-yuv-v2-0-fbdb94f02...@collabora.com Changes in v2: - Provided the missing Fixes tag on first patch (Dmitry) - Added patch "drm/connector: hdmi: Improve debug message for supported format" - Reworked "drm/connector: hdmi: Use YUV420 output format as an RGB fallback" so that the fallback to YUV420 will be attempted only when RGB cannot be supported for any of the available color depths (Maxime) - Added a patch to simplify EDID setup in KUnit cases - Added two patches extending KUnit coverage for YUV420 by providing tests for limited range and max TMDS rate fallback - Rebased series onto drm-misc-next-2025-03-06 - Link to v1: https://lore.kernel.org/r/20241130-hdmi-conn-yuv-v1-0-254279a08...@collabora.com --- Cristian Ciocaltea (19): drm/connector: hdmi: Evaluate limited range after computing format drm/connector: hdmi: Add support for YUV420 format verification drm/connector: hdmi: Improve debug message for supported format drm/connector: hdmi: Add missing bpc debug info to hdmi_try_format_bpc() drm/connector: hdmi: Factor out bpc and format computation logic drm/connector: hdmi: Use YUV420 output format as an RGB fallback drm/tests: hdmi: Replace '[_]MHz' with 'mhz' drm/tests: hdmi: Switch to 'void *' type for EDID data drm/tests: hdmi: Add macro to simplify EDID setup drm/tests: hdmi: Replace open coded EDID setup drm/tests: hdmi: Drop unused drm_kunit_helper_connector_hdmi_init_funcs() drm/tests: hdmi: Setup ycbcr_420_allowed before initializing connector drm/tests: hdmi: Switch to drm_atomic_get_new_connector_state() where possible drm/tests: hdmi: Provide EDID supporting 4K@30Hz with YUV420 only drm/tests: hdmi: Add limited range tests for YUV420 mode drm/tests: hdmi: Rename max TMDS rate fallback tests drm/tests: hdmi: Provide EDID supporting 4K@30Hz with RGB/YUV drm/tests: hdmi: Add max TMDS rate fallback tests for YUV420 mode drm/tests: hdmi: Add test for unsuccessful fallback to YUV420 drivers/gpu/drm/display/drm_hdmi_state_helper.c | 120 ++-- drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 651 +++++++++++++++------ drivers/gpu/drm/tests/drm_kunit_edid.h | 232 ++++++++ 3 files changed, 784 insertions(+), 219 deletions(-) --- base-commit: 9ec1ac835e489b9ab2776c0cbbb1b1ca813923a2 change-id: 20241130-hdmi-conn-yuv-e1fa596df768
