[v3,0/2] drm: bridge: add ssd2825 RGB/DSI bridge support

Message

Svyatoslav Ryhel Feb. 23, 2025, 3:32 p.m. UTC

Solomon SSD2825 is a RGB to MIPI DSI bridge used in LG Optimus 4D P880
and LG Optimus Vu P895

---
Changes on switching from v2 to v3:
- added mutex guard
- configuration register flags parametrized using panel flags
- removed unneded debug messages
- removed unimplemented modes checks
- added check for maximum pixel row length
- use types header
- remove ssd2825_to_ns
- shift bridge setup into atomic pre-enable
- cleaned default values of hzd and hpd

Changes on switching from v1 to v2:
- added description for clock
- removed clock-names
- added boundries for hs-zero-delay-ns and hs-prep-delay-ns
- added mutex lock for host transfers
- converted to atomic ops
- get drm_display_mode mode with atomic helpers
- parameterized INTERFACE_CTRL_REG_6 configuration
- added video mode validation and fixup
- removed clock name
- switched to devm_regulator_bulk_get_const
- added default timings
---

Svyatoslav Ryhel (2):
  dt-bindings: display: bridge: Document Solomon SSD2825
  drm: bridge: Add support for Solomon SSD2825 RGB/DSI bridge

 .../display/bridge/solomon,ssd2825.yaml       | 141 +++
 drivers/gpu/drm/bridge/Kconfig                |  13 +
 drivers/gpu/drm/bridge/Makefile               |   1 +
 drivers/gpu/drm/bridge/ssd2825.c              | 821 ++++++++++++++++++
 4 files changed, 976 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/solomon,ssd2825.yaml
 create mode 100644 drivers/gpu/drm/bridge/ssd2825.c