linux.git/drivers/gpu/drm/panel/Kconfig, branch for-next

drm/panel: samsung-s6e88a0-ams427ap24: Add brightness control

2024-10-31T09:36:35+00:00

The tables for brightness to candela, aid and elvss were taken from downstream
kernel file "dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi" [1][2][3].

The gamma table gets generated in "ss_dsi_smart_dimming_S6E88A0_AMS427AP24.c" [4]
with hard-coded starting values. The function smart_dimming_init() [5] goes
through the v{*}_adjustments, generate_gray_scale and gamma_init procedure.
Instead of calculating it manually, it's easier to compile a custom downstream
kernel with SMART_DIMMING_DEBUG enabled and read out dmesg early at boot.

Selection of the values for aid and elvss are again according to downstream
file "dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi" [6][7].

The set of write commands is guided by downstream file "ss_dsi_panel_common.c" [8]
followed by "ss_dsi_panel_S6E88A0_AMS427AP24.c" [9].

The dsi mode flag MIPI_DSI_MODE_VIDEO_NO_HFP prevents screen flickering while
changing the brightness.

[1] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi#L341-L397
[2] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi#L214-L254
[3] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi#L301-L320
[4] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/ss_dsi_smart_dimming_S6E88A0_AMS427AP24.c
[5] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/ss_dsi_smart_dimming_S6E88A0_AMS427AP24.c#L1816-L1900
[6] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi#L256-L268
[7] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi#L322-L334
[8] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/ss_dsi_panel_common.c#L1389-L1517
[9] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/ss_dsi_panel_S6E88A0_AMS427AP24.c#L666-L678

Signed-off-by: Jakob Hauser 
Reviewed-by: Neil Armstrong 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/30c154954a4e0f75d90f6ef6f393a5ba8b3ffea9.1730070570.git.jahau@rocketmail.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/30c154954a4e0f75d90f6ef6f393a5ba8b3ffea9.1730070570.git.jahau@rocketmail.com

drm/panel: samsung-s6e88a0-ams427ap24: Add initial driver

2024-10-31T09:36:34+00:00

This initial part of the panel driver was mostly generated by the
"linux-mdss-dsi-panel-driver-generator" tool [1], reading downstream
Android kernel file "dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi" [2].

On top of the generic output of the tool, there were a couple of changes
applied:
- Added mipi_dsi_dcs_set_display_on() to function s6e88a0_ams427ap24_on(),
  otherwise the display does not show up.
- In functions s6e88a0_ams427ap24_on() and s6e88a0_ams427ap24_off()
  changed DSI commands to multi context and used "accum_err" returns.
- In functions s6e88a0_ams427ap24_on() and s6e88a0_ams427ap24_off() replaced
  msleep() by mipi_dsi_msleep().
- The function s6e88a0_ams427ap24_get_modes() was changed to make use of
  drm_connector_helper_get_modes_fixed(). This also required to include
  drm/drm_probe_helper.h.
- In function s6e88a0_ams427ap24_probe() registring the regulators was changed
  to devm_regulator_bulk_get_const(). This required to change supplies in struct
  s6e88a0_ams427ap24 to a pointer.
- Removed bool "prepared" from struct s6e88a0_ams427ap24 and according parts in
  functions s6e88a0_ams427ap24_prepare() and s6e88a0_ams427ap24_unprepare().
- Removed include , it's not needed.
- Added comments to the mipi_dsi_dcs_write_seq_multi() lines in function
  s6e88a0_ams427ap24_on().

[1] https://github.com/msm8916-mainline/linux-mdss-dsi-panel-driver-generator
[2] https://github.com/msm8916-mainline/linux-downstream/blob/GT-I9195I/drivers/video/msm/mdss/samsung/S6E88A0_AMS427AP24/dsi_panel_S6E88A0_AMS427AP24_qhd_octa_video.dtsi

Signed-off-by: Jakob Hauser 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/d92ef0036b66520bb6d1ec908165e776cf30c303.1730070570.git.jahau@rocketmail.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/d92ef0036b66520bb6d1ec908165e776cf30c303.1730070570.git.jahau@rocketmail.com

drm/panel: s6e3ha8: select CONFIG_DRM_DISPLAY_DSC_HELPER

2024-10-16T08:16:38+00:00

The new driver needs the dsc helper code to be available:

x86_64-linux-ld: vmlinux.o: in function `s6e3ha8_amb577px01_wqhd_prepare':
panel-samsung-s6e3ha8.c:(.text+0x16b1e65): undefined reference to `drm_dsc_pps_payload_pack'

Select it from Kconfig as we do for other similar drivers.

Fixes: 779679d3c164 ("drm/panel: Add support for S6E3HA8 panel driver")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Jessica Zhang 
Link: https://lore.kernel.org/r/20241015153442.3757061-1-arnd@kernel.org
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20241015153442.3757061-1-arnd@kernel.org

drm/panel: Add Samsung AMS581VF01 panel driver

2024-10-16T08:15:44+00:00

Add the driver for Samsung AMS581VF01 SOFEF01-based 5.81" FHD Plus CMD
mode OLED panel support found in Google Pixel 4a (sm7150-google-sunfish)

Signed-off-by: Danila Tikhonov 
Reviewed-by: Dmitry Baryshkov 
Link: https://lore.kernel.org/r/20241013212402.15624-3-danila@jiaxyga.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20241013212402.15624-3-danila@jiaxyga.com

drm/panel: Add Samsung AMS639RQ08 panel driver

2024-10-09T07:51:29+00:00

Add the driver for Samsung AMS639RQ08 FHD Plus CMD mode panel support
found in:
- Xiaomi Mi 9 Lite / CC9 (sdm710-xiaomi-pyxis)
- Xiaomi Mi 9T / Redmi K20 (sm7150-xiaomi-davinci)
- Xiaomi Mi 9T Pro / Redmi K20 Pro (sm8150-xiaomi-raphael)

Tested-by: Degdag Mohamed  # xiaomi-raphael
Tested-by: Jens Reidel  # xiaomi-davinci
Signed-off-by: Danila Tikhonov 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20240930202448.188051-3-danila@jiaxyga.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240930202448.188051-3-danila@jiaxyga.com

drm/panel: Add support for S6E3HA8 panel driver

2024-10-09T07:49:46+00:00

Add support for MIPI-DSI based S6E3HA8 AMOLED panel
driver. This panel has 1440x2960 resolution, 5.8-inch physical
size, and can be found in starqltechn device.
Brightness regulation is not yet supported.

Reviewed-by: Neil Armstrong 
Signed-off-by: Dzmitry Sankouski 
Link: https://lore.kernel.org/r/20241006-starqltechn_integration_upstream-v6-3-8336b9cd6c34@gmail.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20241006-starqltechn_integration_upstream-v6-3-8336b9cd6c34@gmail.com

drm/display: split DSC helpers from DP helpers

2024-09-02T21:13:44+00:00

Currently the DRM DSC functions are selected by the
DRM_DISPLAY_DP_HELPER Kconfig symbol. This is not optimal, since the DSI
code (both panel and host drivers) end up selecting the seemingly
irrelevant DP helpers. Split the DSC code to be guarded by the separate
DRM_DISPLAY_DSC_HELPER Kconfig symbol.

Reviewed-by: Jessica Zhang 
Reviewed-by: Marijn Suijten 
Acked-by: Rodrigo Vivi  #i915
Acked-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20240704-panel-sw43408-fix-v6-1-3ea1c94bbb9b@linaro.org
Signed-off-by: Dmitry Baryshkov

drm/panel: add BOE tv101wum-ll2 panel driver

2024-08-28T15:14:39+00:00

Add support for the 1200x1920 BOE TV101WUM-LL2 DSI Display Panel found
in the Lenovo Smart Tab M10 tablet. The controller is unknown.

Reviewed-by: Douglas Anderson 
Link: https://lore.kernel.org/r/20240828-topic-sdm450-upstream-tbx605f-panel-v3-2-b792f93e1d6b@linaro.org
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240828-topic-sdm450-upstream-tbx605f-panel-v3-2-b792f93e1d6b@linaro.org

drm/panel: st7701: Add support for SPI for configuration

2024-08-19T15:49:31+00:00

The ST7701 supports not only MIPI DSI, but also SPI as an interface
for configuration. To support a panel connected via SPI with an RGB
parallel interface, add support for SPI using MIPI DBI helpers.

Signed-off-by: Hironori KIKUCHI 
Reviewed-by: Neil Armstrong 
Reviewed-by: Jessica Zhang 
Reviewed-by: Conor Dooley 
Link: https://lore.kernel.org/r/20240804061503.881283-5-kikuchan98@gmail.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240804061503.881283-5-kikuchan98@gmail.com

Merge tag 'drm-misc-next-2024-06-27' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2024-06-27T22:20:37+00:00

drm-misc-next for 6.11:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - panic: Monochrome logo support, Various fixes
  - ttm: Improve the number of page faults on some platforms, Fix test
    build breakage with PREEMPT_RT, more test coverage and various test
    improvements

Driver Changes:
  - Add missing MODULE_DESCRIPTION where needed
  - ipu-v3: Various fixes
  - vc4: Monochrome TV support
  - bridge:
    - analogix_dp: Various improvements and reworks, handle AUX
      transfers timeout
    - tc358767: Fix DRM_BRIDGE_ATTACH_NO_CONNECTOR, Fix clock
      calculations
  - panels:
    - More transitions to mipi_dsi wrapped functions
    - New panels: Lincoln Technologies LCD197, Ortustech COM35H3P70ULC,

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20240627-congenial-pistachio-nyala-848cf4@houat