Initially there was only one DSI bridge with one panel attached to this
device. This explained the call to uclass_first_device_err(UCLASS_PANEL,
...) which worked fine at the time.

Now that multiple bridges and panels, with different technologies, can
be plugged onto the board this way to get the panel device is outdated.

The lookup is done is two steps. First we circle through the
UCLASS_VIDEO_BRIDGE, and once we get one, we search through its
endpoints until we get a UCLASS_PANEL device available.

Acked-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

STM32MP2 SoCs feature a new version of the LTDC IP.  This new version
features a bus clock, as well as a 150MHz pad frequency.  Add its
compatible to the list of device to probe and handle quirks.  The new
hardware version features a bus clock.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Acked-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>

The LVDS Display Interface Transmitter handles the LVDS protocol:
it maps the pixels received from the upstream Pixel-DMA (LTDC)
onto the LVDS PHY.

The LVDS controller driver supports the following high-level features:
        • FDP-Link-I and OpenLDI (v0.95) protocols
        • Single-Link or Dual-Link operation
        • Single-Display or Double-Display (with the same content
          duplicated on both)
        • Flexible Bit-Mapping, including JEIDA and VESA
        • RGB888 or RGB666 output
        • Synchronous design, with one input pixel per clock cycle
        • No resolution limitation.

Acked-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>

Add the compatible "panel-lvds" for simple-panel driver in U-Boot.  In
Linux this compatible is managed by the driver
drivers/gpu/drm/panel/panel-lvds.c but in U-Boot the specific LVDS
features (bus_format/bus_flags) are not supported.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>

Currently, the EFI framebuffer is non-functional in payload mode. It
always reports: "No video mode configured in EFI!"

This is caused by a copy-paste error that replaced
"struct efi_entry_gopmode" with "struct efi_gop_mode".

Fixes: 88753816cf54 ("efi: video: Move payload code into a function")
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Combining two bits into a mask requires the use of the binary 'or'
operator not the logical one. Correct it.

This issue was found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Svyatoslav Ryhel <clamor95@gmail.com>

The goto immediately after a return is unreachable. Remove it and its
target label as redundant.

This issue was found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Svyatoslav Ryhel <clamor95@gmail.com>

The variables 'offset_matrix' and 'csc_matrix' will be used
uninitialised if video->is_rgb is false. Correct the logic so the
attempt to use uninitialised variables is not made. Also remove the use
of these variables as they seem to serve no useful purpose just being
aliases for arrays.

This issue was found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Link: https://lore.kernel.org/r/20251001-video_zynqmp-v1-1-34f1e59b9c34@linaro.org
Signed-off-by: Michal Simek <michal.simek@amd.com>

Add support for PWM backlight found in Samsung CMC623 image converter.

Signed-off-by: Ion Agorria <ion@agorria.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Add support for a Samsung CMC623 image converter chip found in several
Samsung devices such as Samsung Galaxy R (I9103) and Samsung Galaxy
Tab 10.1 (GT-P75xx).

Signed-off-by: Ion Agorria <ion@agorria.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>