[v3,0/3] Add driver for Himax HX8279 DriverIC panels

Message

AngeloGioacchino Del Regno April 10, 2025, 7:24 a.m. UTC

Changes in v3:
 - Added support for setting digital gamma parameters and validity check
 - Added support for setting analog gamma parameters
 - Changed gout_{l,r} to a structure and added a description
 - Fixed DSI LPM/HS setting in prepare/unprepare callbacks
 - Remove forced panel off in probe function as that was simply
   useless
 - Renamed function hx8279_check_config to hx8279_check_params
   as that is actually checking multiple parameters and not just
   basic DDIC configuration
 - Moved the GMUX and GOA validation to their own functions to
   improve readability

Changes in v2:
 - Removed unneeded mipi_dsi_device_unregister() call for secondary
   DSI: as the driver is using devm, that's not necessary (CJ)
 - Removed superfluous if branch as pointed out by CJ

This series adds a driver for DSI panels using the Himax HX8279 and
HX8279-D DriverICs, and introduces two panels using such a configuration,
the Startek KX070FHFID078, found on some MediaTek Genio Evaluation Kits,
and the Aoly SL101PM1794FOG-v15 usually found on some I.MX8MM boards.

This panel is found on the latest hardware revisions of some MediaTek
Genio Evaluation Kits, and specifically, at least:
 - Genio 510 EVK
 - Genio 700 EVK
 - Genio 1200 EVK

This driver was tested on all of the aforementioned boards.

AngeloGioacchino Del Regno (3):
  dt-bindings: vendor-prefixes: Add Shenzhen Aoly Technology Co., Ltd.
  dt-bindings: display: panel: Add Himax HX8279/HX8279-D DDIC panels
  drm: panel: Add driver for Himax HX8279 DDIC panels

 .../bindings/display/panel/himax,hx8279.yaml  |   75 +
 .../devicetree/bindings/vendor-prefixes.yaml  |    2 +
 drivers/gpu/drm/panel/Kconfig                 |   11 +
 drivers/gpu/drm/panel/Makefile                |    1 +
 drivers/gpu/drm/panel/panel-himax-hx8279.c    | 1365 +++++++++++++++++
 5 files changed, 1454 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/himax,hx8279.yaml
 create mode 100644 drivers/gpu/drm/panel/panel-himax-hx8279.c