linux-stable.git/drivers/gpu/drm/panel, branch linux-rolling-stable

drm/panel: fix unmet dependency bug for DRM_PANEL_HIMAX_HX83121A

2026-08-03T09:25:34+00:00

[ Upstream commit aaa5be0258db1709e254b4150af5c2fa5518c548 ]

Currently, DRM_PANEL_HIMAX_HX83121A selects DRM_DISPLAY_DSC_HELPER
without also ensuring DRM_DISPLAY_HELPER is enabled, causing an unmet
dependency:

WARNING: unmet direct dependencies detected for DRM_DISPLAY_DSC_HELPER
  Depends on [n]: HAS_IOMEM [=y] && DRM [=m] && DRM_DISPLAY_HELPER [=n]
  Selected by [m]:
  - DRM_PANEL_HIMAX_HX83121A [=m] && HAS_IOMEM [=y] && DRM [=m] && DRM_PANEL [=y] && OF [=y] && DRM_MIPI_DSI [=y] && BACKLIGHT_CLASS_DEVICE [=m]
  - DRM_PANEL_ILITEK_ILI9882T [=m] && HAS_IOMEM [=y] && DRM [=m] && DRM_PANEL [=y] && OF [=y] && DRM_MIPI_DSI [=y] && BACKLIGHT_CLASS_DEVICE [=m]

Many other DRM_PANEL_* options select DRM_DISPLAY_HELPER when selecting
DRM_DISPLAY_DSC_HELPER, let's do the same here.

This unmet dependency bug was found by kconfirm, a static analysis tool
for Kconfig.

Fixes: defab7b01e08 ("drm/panel: hx83121a: select DRM_DISPLAY_DSC_HELPER")
Signed-off-by: Julian Braha 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260711234230.2236041-1-julianbraha@gmail.com
Signed-off-by: Sasha Levin

drm/panel: s6e3ha8: fix unmet dependency on DRM_DISPLAY_HELPER

2026-08-03T09:25:34+00:00

[ Upstream commit 3667bc164849fee4f1b18b182bdfe643f758ca17 ]

Currently, DRM_PANEL_SAMSUNG_S6E3HA8 selects DRM_DISPLAY_DSC_HELPER
without ensuring its dependency, DRM_DISPLAY_HELPER, is enabled,
causing an unmet dependency.

Let's select DRM_DISPLAY_HELPER as other similar options do.

This unmet dependency bug was found by kconfirm, a static analysis tool
for Kconfig.

Fixes: fd3b2c5f40a1 ("drm/panel: s6e3ha8: select CONFIG_DRM_DISPLAY_DSC_HELPER")
Signed-off-by: Julian Braha 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260712001514.2318597-1-julianbraha@gmail.com
Signed-off-by: Sasha Levin

drm/panel: ilitek-ili9882t: fix unmet dependency for DRM_PANEL_ILITEK_ILI9882T

2026-08-03T09:25:34+00:00

[ Upstream commit fc03f930bd9fd7c09617e41b1743e50ba659707c ]

Currently, DRM_PANEL_ILITEK_ILI9882T selects DRM_DISPLAY_DSC_HELPER
without ensuring DRM_DISPLAY_HELPER is also enabled, causing an unmet
dependency and build failure.

Other similar options select DRM_DISPLAY_HELPER, let's do the same here.

This unmet dependency bug was found by kconfirm, a static analysis tool
for Kconfig.

Fixes: 68e28facbc8a ("drm/panel: ilitek-ili9882t: Select DRM_DISPLAY_DSC_HELPER")
Signed-off-by: Julian Braha 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260712002632.2323484-1-julianbraha@gmail.com
Signed-off-by: Sasha Levin

drm/panel: Clean up S6E3HA2 config dependencies and fill help text

2026-07-24T14:19:08+00:00

[ Upstream commit 632a8aa96d0717aa92cb63e3939d09b896223b4c ]

As per the config name this Display IC features a DSI command-mode
interface (or the command to switch to video mode is not
known/documented) and does not use any of the video-mode helper
utilities, hence should not select VIDEOMODE_HELPERS. In addition it
uses devm_gpiod_get() and related functions from GPIOLIB.

Fixes: 779679d3c164 ("drm/panel: Add support for S6E3HA8 panel driver")
Signed-off-by: David Heidelberg 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260505-panel-clean-up-kconfig-dep-v2-3-9cc31d6e6919@ixit.cz
Signed-off-by: Sasha Levin

drm/panel: Clean up S6E3FC2X01 config dependencies

2026-07-24T14:19:08+00:00

[ Upstream commit faf497d2f1ff15756981c6e65a9c3d8bf192a969 ]

As per the config name this Display IC features a DSI command-mode
interface (or the command to switch to video mode is not
known/documented) and does not use any of the video-mode helper
utilities, hence should not select VIDEOMODE_HELPERS.  In addition it
uses devm_gpiod_get() and related functions from GPIOLIB.

Fixes: 88148c30ef26 ("drm/panel: Add Samsung S6E3FC2X01 DDIC with AMS641RW panel")
Signed-off-by: David Heidelberg 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260505-panel-clean-up-kconfig-dep-v2-2-9cc31d6e6919@ixit.cz
Signed-off-by: Sasha Levin

drm/panel: Clean up SOFEF00 config dependencies

2026-07-24T14:19:08+00:00

[ Upstream commit e87e2357292f80d10e1a43cb910454313a5cb448 ]

As per the config name this Display IC features a DSI command-mode
interface (or the command to switch to video mode is not
known/documented) and does not use any of the video-mode helper
utilities, hence should not select VIDEOMODE_HELPERS.  In addition it
uses devm_gpiod_get() and related functions from GPIOLIB.

Fixes: 5933baa36e26 ("drm/panel/samsung-sofef00: Add panel for OnePlus 6/T devices")
Reviewed-by: Neil Armstrong 
Reviewed-by: Casey Connolly 
Reviewed-by: David Heidelberg 
Signed-off-by: Marijn Suijten 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260505-panel-clean-up-kconfig-dep-v2-1-9cc31d6e6919@ixit.cz
Signed-off-by: Sasha Levin

drm/panel: himax-hx83102: restore MODE_LPM after sending disable cmds

2026-05-05T12:43:36+00:00

When preparing the panel, it seems that it always expects commands to be
transferred in LP mode. However, the disable function removes the
MIPI_DSI_MODE_LPM flag, and no other function re-adds it.

As the unprepare function contains no DSI commands, re-adding the flag
just after disabling the panel should be safe. Add the code re-adding
the flag after the two commands for disabling the panel are sent.

This fixes screen unblanking (after blanking once) on
mt8188-geralt-ciri-sku1 device.

Cc: stable@vger.kernel.org # 6.11+
Fixes: 0ef94554dc40 ("drm/panel: himax-hx83102: Break out as separate driver")
Signed-off-by: Icenowy Zheng 
Reviewed-by: Neil Armstrong 
Reviewed-by: Douglas Anderson 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260425165751.1716569-1-zhengxingda@iscas.ac.cn

drm/panel: boe-tv101wum-nl6: restore MODE_LPM after sending disable cmds

2026-05-05T12:43:36+00:00

When preparing the panel, it seems that it always expects commands to be
transferred in LP mode. However, the disable function removes the
MIPI_DSI_MODE_LPM flag, and no other function re-adds it.

As the unprepare function contains no DSI commands, re-adding the flag
just after disabling the panel should be safe. Add the code re-adding
the flag after the two commands for disabling the panel are sent.

This fixes error messages shown in kernel log when unblanking on
mt8183-kukui-kodama-sku32 device.

Cc: stable@vger.kernel.org
Fixes: a869b9db7adf ("drm/panel: support for boe tv101wum-nl6 wuxga dsi video mode panel")
Signed-off-by: Icenowy Zheng 
Reviewed-by: Neil Armstrong 
Reviewed-by: Douglas Anderson 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260503091708.1079962-1-zhengxingda@iscas.ac.cn

drm/panel: feiyang-fy07024di26a30d: return display-on error

2026-05-05T12:43:36+00:00

mipi_dsi_dcs_set_display_on() returns an error code, but feiyang_enable()
currently ignores it and always reports success.

Return the DCS command result so callers can observe enable failures.

Signed-off-by: Christian Van 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260425053948.117714-1-cvan20191@gmail.com

drm/panel: hx83121a: select DRM_DISPLAY_DSC_HELPER

2026-05-05T12:43:36+00:00

Like a number of other panel drivers, this newly merged driver
needs DRM_DISPLAY_DSC_HELPER to be enabled:

arm-linux-gnueabi-ld: drivers/gpu/drm/panel/panel-himax-hx83121a.o: in function `himax_prepare':
panel-himax-hx83121a.c:(.text+0x1024): undefined reference to `drm_dsc_pps_payload_pack'

Fixes: a7c61963b727 ("drm/panel: Add Himax HX83121A panel driver")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Neil Armstrong 
Reviewed-by: David Heidelberg 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260413071043.3829868-1-arnd@kernel.org