linux-stable.git/drivers/gpu/drm/panel, branch v4.19.321

drm/panel: ilitek-ili9881c: Fix warning with GPIO controllers that sleep

2024-07-05T07:00:32+00:00

[ Upstream commit ee7860cd8b5763017f8dc785c2851fecb7a0c565 ]

The ilitek-ili9881c controls the reset GPIO using the non-sleeping
gpiod_set_value() function. This complains loudly when the GPIO
controller needs to sleep. As the caller can sleep, use
gpiod_set_value_cansleep() to fix the issue.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20240317154839.21260-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240317154839.21260-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Sasha Levin

drm/panel: simple: Fix Innolux G101ICE-L01 timings

2023-12-08T07:43:23+00:00

[ Upstream commit 3f9a91b6c00e655d27bd785dcda1742dbdc31bda ]

The Innolux G101ICE-L01 datasheet [1] page 17 table
6.1 INPUT SIGNAL TIMING SPECIFICATIONS
indicates that maximum vertical blanking time is 40 lines.
Currently the driver uses 29 lines.

Fix it, and since this panel is a DE panel, adjust the timings
to make them less hostile to controllers which cannot do 1 px
HSA/VSA, distribute the delays evenly between all three parts.

[1] https://www.data-modul.com/sites/default/files/products/G101ICE-L01-C2-specification-12042389.pdf

Fixes: 1e29b840af9f ("drm/panel: simple: Add Innolux G101ICE-L01 panel")
Signed-off-by: Marek Vasut 
Reviewed-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20231008223256.279196-1-marex@denx.de
Signed-off-by: Sasha Levin

drm/panel: simple: fix active size for Ampire AM-480272H3TMQW-T01H

2023-08-11T09:45:08+00:00

[ Upstream commit f24b49550814fdee4a98b9552e35e243ccafd4a8 ]

The previous setting was related to the overall dimension and not to the
active display area.
In the "PHYSICAL SPECIFICATIONS" section, the datasheet shows the
following parameters:

 ----------------------------------------------------------
|       Item        |         Specifications        | unit |
 ----------------------------------------------------------
| Display area      | 98.7 (W) x 57.5 (H)           |  mm  |
 ----------------------------------------------------------
| Overall dimension | 105.5(W) x 67.2(H) x 4.96(D)  |  mm  |
 ----------------------------------------------------------

Fixes: 966fea78adf2 ("drm/panel: simple: Add support for Ampire AM-480272H3TMQW-T01H")
Signed-off-by: Dario Binacchi 
Reviewed-by: Neil Armstrong 
[narmstrong: fixed Fixes commit id length]
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20230516085039.3797303-1-dario.binacchi@amarulasolutions.com
Signed-off-by: Sasha Levin

drm/panel: otm8009a: Set backlight parent to panel device

2023-05-17T09:13:26+00:00

commit ab4f869fba6119997f7630d600049762a2b014fa upstream.

This is the logical place to put the backlight device, and it also
fixes a kernel crash if the MIPI host is removed. Previously the
backlight device would be unregistered twice when this happened - once
as a child of the MIPI host through `mipi_dsi_host_unregister`, and
once when the panel device is destroyed.

Fixes: 12a6cbd4f3f1 ("drm/panel: otm8009a: Use new backlight API")
Signed-off-by: James Cowgill 
Cc: stable@vger.kernel.org
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20230412173450.199592-1-james.cowgill@blaize.com
Signed-off-by: Greg Kroah-Hartman

drm/panel/raspberrypi-touchscreen: Initialise the bridge in prepare

2022-04-27T11:39:44+00:00

[ Upstream commit 5f18c0782b99e26121efa93d20b76c19e17aa1dd ]

The panel has a prepare call which is before video starts, and an
enable call which is after.
The Toshiba bridge should be configured before video, so move
the relevant power and initialisation calls to prepare.

Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Dave Stevenson 
Signed-off-by: Stefan Wahren 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-3-stefan.wahren@i2se.com
Signed-off-by: Sasha Levin

drm/panel/raspberrypi-touchscreen: Avoid NULL deref if not initialised

2022-04-27T11:39:44+00:00

[ Upstream commit f92055ae0acb035891e988ce345d6b81a0316423 ]

If a call to rpi_touchscreen_i2c_write from rpi_touchscreen_probe
fails before mipi_dsi_device_register_full is called, then
in trying to log the error message if uses ts->dsi->dev when
it is still NULL.

Use ts->i2c->dev instead, which is initialised earlier in probe.

Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Dave Stevenson 
Signed-off-by: Stefan Wahren 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-2-stefan.wahren@i2se.com
Signed-off-by: Sasha Levin

drm/panel: simple: Fix Innolux G070Y2-L01 BPP settings

2022-03-23T08:10:44+00:00

[ Upstream commit fc1b6ef7bfb3d1d4df868b1c3e0480cacda6cd81 ]

The Innolux G070Y2-L01 supports two modes of operation:
1) FRC=Low/NC ... MEDIA_BUS_FMT_RGB666_1X7X3_SPWG ... BPP=6
2) FRC=High ..... MEDIA_BUS_FMT_RGB888_1X7X4_SPWG ... BPP=8

Currently the panel description mixes both, BPP from 1) and bus
format from 2), which triggers a warning at panel-simple.c:615.

Pick the later, set bpp=8, fix the warning.

Fixes: a5d2ade627dca ("drm/panel: simple: Add support for Innolux G070Y2-L01")
Signed-off-by: Marek Vasut 
Cc: Christoph Fritz 
Cc: Laurent Pinchart 
Cc: Maxime Ripard 
Cc: Sam Ravnborg 
Cc: Thomas Zimmermann 
Reviewed-by: Laurent Pinchart 
Link: https://patchwork.freedesktop.org/patch/msgid/20220220040718.532866-1-marex@denx.de
Signed-off-by: Maarten Lankhorst 
Signed-off-by: Sasha Levin

drm/panel: innolux-p079zca: Delete panel on attach() failure

2022-01-27T08:04:16+00:00

[ Upstream commit 32a267e9c057e1636e7afdd20599aa5741a73079 ]

If we fail to attach (e.g., because 1 of 2 dual-DSI controllers aren't
ready), we leave a dangling drm_panel reference to freed memory. Clean
that up on failure.

This problem exists since the driver's introduction, but is especially
relevant after refactored for dual-DSI variants.

Fixes: 14c8f2e9f8ea ("drm/panel: add Innolux P079ZCA panel driver")
Fixes: 7ad4e4636c54 ("drm/panel: p079zca: Refactor panel driver to support multiple panels")
Signed-off-by: Brian Norris 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20210923173336.2.I9023cf8811a3abf4964ed84eb681721d8bb489d6@changeid
Signed-off-by: Sasha Levin

drm/panel: raspberrypi-touchscreen: Prevent double-free

2021-07-28T09:13:49+00:00

[ Upstream commit 7bbcb919e32d776ca8ddce08abb391ab92eef6a9 ]

The mipi_dsi_device allocated by mipi_dsi_device_register_full() is
already free'd on release.

Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Maxime Ripard 
Reviewed-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20210720134525.563936-9-maxime@cerno.tech
Signed-off-by: Sasha Levin

drm: panel: simple: Fix bpc for LG LB070WV8 panel

2020-08-19T06:14:57+00:00

[ Upstream commit a6ae2fe5c9f9fd355a48fb7d21c863e5b20d6c9c ]

The LG LB070WV8 panel incorrectly reports a 16 bits per component value,
while the panel uses 8 bits per component. Fix it.

Fixes: dd0150026901 ("drm/panel: simple: Add support for LG LB070WV8 800x480 7" panel")
Signed-off-by: Laurent Pinchart 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20200711225317.28476-1-laurent.pinchart+renesas@ideasonboard.com
Signed-off-by: Sasha Levin