linux-stable.git/drivers/gpu/drm/panel, branch v6.2.2

drm/panel: boe-tv101wum-nl6: Ensure DSI writes succeed during disable

2023-02-01T10:41:15+00:00

The unprepare sequence has started to fail after moving to panel bridge
code in the msm drm driver (commit 007ac0262b0d ("drm/msm/dsi: switch to
DRM_PANEL_BRIDGE")). You'll see messages like this in the kernel logs:

   panel-boe-tv101wum-nl6 ae94000.dsi.0: failed to set panel off: -22

This is because boe_panel_enter_sleep_mode() needs an operating DSI link
to set the panel into sleep mode. Performing those writes in the
unprepare phase of bridge ops is too late, because the link has already
been torn down by the DSI controller in post_disable, i.e. the PHY has
been disabled, etc. See dsi_mgr_bridge_post_disable() for more details
on the DSI .

Split the unprepare function into a disable part and an unprepare part.
For now, just the DSI writes to enter sleep mode are put in the disable
function. This fixes the panel off routine and keeps the panel happy.

My Wormdingler has an integrated touchscreen that stops responding to
touch if the panel is only half disabled too. This patch fixes it. And
finally, this saves power when the screen is off because without this
fix the regulators for the panel are left enabled when nothing is being
displayed on the screen.

Fixes: 007ac0262b0d ("drm/msm/dsi: switch to DRM_PANEL_BRIDGE")
Fixes: a869b9db7adf ("drm/panel: support for boe tv101wum-nl6 wuxga dsi video mode panel")
Cc: yangcong 
Cc: Douglas Anderson 
Cc: Jitao Shi 
Cc: Sam Ravnborg 
Cc: Rob Clark 
Cc: Dmitry Baryshkov 
Signed-off-by: Stephen Boyd 
Reviewed-by: Douglas Anderson 
Signed-off-by: Douglas Anderson 
Link: https://patchwork.freedesktop.org/patch/msgid/20230106030108.2542081-1-swboyd@chromium.org
(cherry picked from commit c913cd5489930abbb557ef144a333846286754c3)
Signed-off-by: Thomas Zimmermann

Backmerge tag 'v6.1-rc6' into drm-next

2022-11-24T01:05:43+00:00

Linux 6.1-rc6

This is needed for drm-misc-next and tegra.

Signed-off-by: Dave Airlie

drm/panel: Add NewVision NV3051D MIPI-DSI LCD panel

2022-11-14T11:44:46+00:00

Support NewVision NV3051D panels as found on the Anbernic RG353P and
RG353V. The underlying LCD part number for the RG353x devices is
unknown, so the device name and a fallback for the driver IC is
used instead.

Signed-off-by: Chris Morgan 
[Fixed checkpatch moan about parens]
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20221111203130.9615-4-macroalpha82@gmail.com

drm/panel: simple: set bpc field for logic technologies displays

2022-11-10T15:29:45+00:00

In case bpc is not set for a panel it then throws a WARN(). Add bpc to
the panels logictechno_lt170410_2whc and logictechno_lt161010_2nh.

Fixes: 5728fe7fa539 ("drm/panel: simple: add display timings for logic technologies displays")
Signed-off-by: Aishwarya Kothari 
Signed-off-by: Francesco Dolcini 
Signed-off-by: Douglas Anderson 
Link: https://patchwork.freedesktop.org/patch/msgid/20220831141622.39605-1-francesco.dolcini@toradex.com

drm: panel: Add Jadard JD9365DA-H3 DSI panel

2022-11-09T09:40:56+00:00

Jadard JD9365DA-H3 is WXGA MIPI DSI panel and it support TFT
dot matrix LCD with 800RGBx1280 dots at maximum.

Add support for it.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Jagan Teki 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20221108173120.618312-4-jagan@edgeble.ai

drm/fb-helper: Move generic fbdev emulation into separate source file

2022-11-05T16:12:04+00:00

Move the generic fbdev implementation into its own source and header
file. Adapt drivers. No functional changes, but some of the internal
helpers have been renamed to fit into the drm_fbdev_ naming scheme.

v3:
	* rename drm_fbdev.{c,h} to drm_fbdev_generic.{c,h}
	* rebase onto vmwgfx changes
	* rebase onto xlnx changes
	* fix include statements in amdgpu

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-22-tzimmermann@suse.de

drm/panel-ili9341: Include

2022-11-05T16:05:54+00:00

Include  for devm_of_find_backlight().

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-10-tzimmermann@suse.de

drm/panel/panel-sitronix-st7701: Remove panel on DSI attach failure

2022-11-01T22:12:06+00:00

In case mipi_dsi_attach() fails, call drm_panel_remove() to
avoid memory leak.

Fixes: 849b2e3ff969 ("drm/panel: Add Sitronix ST7701 panel driver")
Signed-off-by: Marek Vasut 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20221014231106.468063-1-marex@denx.de

drm/panel/panel-sitronix-st7701: Clean up CMDnBKx selection

2022-11-01T22:10:23+00:00

There are two command register files, CMD1 and CMD2, where only the CMD2
contains additional register sub-files BK0..3 . Pull the register file
selection call into separate function instead of duplicating it all over
the driver. The CMD2BK2 file is undocumented in datasheet, and is used
for BIST. No functional change.

Signed-off-by: Marek Vasut 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20221014231042.468033-1-marex@denx.de

drm/panel/panel-sitronix-st7701: Fix RTNI calculation

2022-11-01T17:34:08+00:00

The RTNI field is multiplied by 16 and incremented by 512 before being
used as the minimum number of pixel clock per horizontal line, hence
it is necessary to subtract those 512 bytes from htotal and then divide
the result by 16 before writing the value into the RTNI field. Fix the
calculation.

Fixes: de2b4917843c ("drm/panel/panel-sitronix-st7701: Infer horizontal pixel count from TFT mode")
Signed-off-by: Marek Vasut 
Reviewed-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20221012221159.88397-1-marex@denx.de