GitLab

commit f3621a8e upstream.

During panel removal or system shutdown panel_simple_disable() is called
which disables the panel backlight but the panel is still powered due to
missing calls to panel_simple_unprepare().

Fixes: d02fd93e

 ("drm/panel: simple - Disable panel on shutdown")
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170807115545.27747-1-net147@gmail.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

LVDS panel, make/model described as:

AU Optronics Corporation - B101XTN01.0 (H/W:0A)

See:
http://www.encore-electronic.com/media/B101XTN01.0.pdf



Tested with panel attached to an Inforce IFC6410 board.
Signed-off-by: Rob Clark <robdclark@gmail.com>

Use the new devm_gpiod_get_optional() to simplify the probe code.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The AUO B133HTN01 is a 13.6" FHD TFT LCD panel connecting to an eDP
interface and with an integrated LED backlight unit.

This panel is used on the Samsung Chromebook 2 (XE503C32).
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

For most of the panels, we need to provide delays during various stages
of panel power up and power down. Add a structure to hold those delay
values and use them in corresponding functions.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Move out code from enable and disable routines to prepare
and unprepare routines, so that functionality is properly
distributed across all the panel functions.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This patch adds dummy definition for prepare and unprepare
routines to simple panel driver.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

simple-panel is not a valid panel model, so there is no data (video
timings, etc.) associated with it. Therefore drivers can't do anything
useful with it, so it should not appear in the table of OF matches.

Device trees will always need to specify the exact model of the panel.
Signed-off-by: Thierry Reding <treding@nvidia.com>

The Innolux N116BGE is an 11.6" WXGA TFT LCD panel connecting to an eDP
interface and with an integrated LED backlight unit.

It is used in the Tegra132 Norrin reference design.
Signed-off-by: Thierry Reding <treding@nvidia.com>

The bits-per-color is provided by the EDID normally, but if we're using
panels, we need to store it somewhere. So we add a field to the panel
descriptor for it.
Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This panel is used by the Medcom Wide and supported by the
simple-panel driver.
Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This panel is used by Atmel's SAMA5D3 Evaluation Kits (sama5d3xek) and
supported by the simple-panel driver.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The LG LD070WX3-SL01 and Panasonic VVX10F004B00 are DSI support
non-continuous clock mode. Set the MIPI_DSI_CLOCK_NON_CONTINUOUS
to their definition so host drivers become aware of this capability.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This panel is used by nyan-big and can be supported by the simple-panel
driver.
Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
[treding@nvidia.com: add device tree binding document]
Signed-off-by: Thierry Reding <treding@nvidia.com>

When a device is shut down, disable the panel to make sure the display
backlight doesn't stay lit.
Signed-off-by: Thierry Reding <treding@nvidia.com>

This panel is sold by Toradex for Colibri T20/T30 and Apalis T30
evaluation kits.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The EDT ETM0700G0DH6 and ET070080DH6 are 7" 800x480 panels,
which can be supported by the simple panel driver.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This panel is used by Tegra Note 7 and supported by the simple-panel
driver.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This panel is used by the NVIDIA SHIELD and supported by the
simple-panel driver.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

In order to differentiate between the different video modes (burst vs.
non-burst, sync pulses vs. sync events) supported by peripherals, pass
the flags that specify this mode in the panel description to the DSI
peripheral device when probed.
Signed-off-by: Thierry Reding <treding@nvidia.com>

The enable GPIO for panels may be provided by GPIO expanders on slow
busses (such as I2C), and therefore toggling the GPIO may sleep. Since
these accesses don't happen in interrupt context, use the *_cansleep()
variants of the GPIO API.
Signed-off-by: Thierry Reding <treding@nvidia.com>

regulator_disable() is already performed by panel_simple_disable(),
which is called by panel_simple_remove().
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Use the new GPIO descriptor interface to handle the panel's enable GPIO.
This considerably simplifies the code.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
[treding@nvidia.com: rework to improve readability]
Signed-off-by: Thierry Reding <treding@nvidia.com>

The LP129QE LCD has an LED backlight and a display resolution of
2560x1700 pixels.
Signed-off-by: Thierry Reding <treding@nvidia.com>

This stashes away the EDID data so that the sysfs per-connector file
"edid" can display it. Without this change, the "edid" file is always
empty.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The Chunghwa CLAA101WA01A is a 10.1" 1366x768 panel, which can be
supported by the simple panel driver.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The Samsung LNT101NT05 10.1" WXVGA panel can be supported by the simple panel
driver.

Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The Panasonic VVX10F004B0 is a 10.1" WUXGA TFT LCD panel connected using
four DSI lanes.
Signed-off-by: Thierry Reding <treding@nvidia.com>

Add a driver for simple panels. Such panels can have a regulator that
provides the supply voltage and a separate GPIO to enable the panel.
Optionally the panels can have a backlight associated with them so it
can be enabled or disabled according to the panel's power management
mode.

Support is added for two panels: An AU Optronics 10.1" WSVGA and a
Chunghwa Picture Tubes 10.1" WXGA panel.
Signed-off-by: Thierry Reding <treding@nvidia.com>