drm: Add support for backlight control of eDP panel on ti-sn65dsi86 bridge
Status from this message: NAK.
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
- v3 Latest2 patches 13 repliesNAK
- v22 patches 1 replySuperseded
- v13 patches 3 repliesSuperseded
Changes in v3 from the cover letter
- Add missing ';' to fix module compilation (kernel test bot)
Patches in v3
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | dt-bindings: backlight: add DisplayPort aux backlightDocumentation/ | +49 | 10 replies | |
| 2/2 | backlight: Add DisplayPort aux backlight driverdrivers/ drivers/ drivers/ | +253 | 3 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v3 yet.
Cover letter [v3 0/2] drm: Add support for backlight control of eDP panel on ti-sn65dsi86 bridge
The backlight level of an eDP panel can be controlled through the AUX channel using DPCD registers of the panel.
The capability for the Source device to adjust backlight characteristics within the panel, using the Sink device DPCD registers is indicated by the TCON_BACKLIGHT_ADJUSTMENT_CAPABLE bit in the EDP_GENERAL_CAPABILITY_1 register (DPCD Address 701h, bit0). In this configuration, the eDP TCON receives the backlight level information from the host, through the AUX channel.
Anderson's patch series [1] exposed the DDC bus from ti-sn65dsi86 bridge, that gives an option to move the backlight control out of the bridge and to create a separate backlight driver.
Changes in v2:
- Created a new DisplayPort aux backlight driver and moved the code from drm_dp_aux_backlight.c (v1) to the new driver.
- Removed the changes done in ti-sn65dsi86 bridge. (Rob Herring)
Changes in v3:
- Add missing ';' to fix module compilation (kernel test bot)
[1] https://lore.kernel.org/dri-devel/[email protected]/
Rajeev Nandan (2):
dt-bindings: backlight: add DisplayPort aux backlight
backlight: Add DisplayPort aux backlight driver
.../bindings/leds/backlight/dp-aux-backlight.yaml | 49 +++++ drivers/video/backlight/Kconfig | 7 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/dp_aux_backlight.c | 245 +++++++++++++++++++++ 4 files changed, 302 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/dp-aux-backlight.yaml create mode 100644 drivers/video/backlight/dp_aux_backlight.c
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