Add backlight driver for the panels supporting backlight control
using DPCD registers on the DisplayPort aux channel.
Changes in v2:
- New (most of the code reused from drm_dp_aux_backlight.c of v1)
Changes in v3:
- Add missing ';' to fix module compilation (kernel test bot)
Signed-off-by: Rajee
Add bindings for DisplayPort aux backlight driver.
Changes in v2:
- New
Signed-off-by: Rajeev Nandan
---
.../bindings/leds/backlight/dp-aux-backlight.yaml | 49 ++
1 file changed, 49 insertions(+)
create mode 100644
Documentation/devicetree/bindings/leds/backlight/dp-aux-
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
Instead of allocating snapshotting structure at the driver probe time
and later handling concurrent access, actual state, etc, make
msm_disp_state transient struct. Allocate one when snapshotting happens
and free it after coredump data is read by userspace.
Signed-off-by: Dmitry Baryshkov
---
dr
Instead of always getting the disp_state from drm device, pass it as an
argument.
Signed-off-by: Dmitry Baryshkov
---
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 5 +
drivers/gpu/drm/msm/disp/msm_disp_snapshot.h| 8
.../gpu/drm/msm/disp/msm_disp_snapshot_util.c | 17 ++
Rework display subsystem snapshotting by making msm_disp_state transient
data struct. This simplifies handling of data.
Dependencies:
https://lore.kernel.org/linux-arm-msm/1618606645-19695-1-git-send-email-abhin...@codeaurora.org/
D
