Some drivers call video_set_flush_dcache() to indicate that they want to
have the dcache flushed for the frame buffer. These drivers benefit from
our new video damage control, because we can reduce the amount of memory
that gets flushed significantly.
This patch enables video damage control for all device drivers that call
video_set_flush_dcache() to make sure they benefit from it.
Signed-off-by: Alexander Graf <agraf@csgraf.de>
[Alper: Add to VIDEO_TIDSS, imply instead of select]
Co-developed-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add support for the LCD interfaces (LCDIF1/2). When probed, these
interfaces request numerous clocks and power domains, attach the bridge
and look for a panel in order to retrieve its capabilities and
properties.
There is a similar existing driver in the upper folder for other i.MX
targets, I discovered this driver a bit late. It is not targeting the
i.MX8MP and I have no idea how different can the LCDIF be on this SoC,
but I did not manage to get it work, especially because it is not fully
compliant with the device-model, especially on the clocks/power
management side which is all ad-hoc. This is normal though, it was
contributed more than ten years ago.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Add support for the LVDS Display Bridge (LDB) found on i.MX8MP.
When attached, the bridge driver looks for panels connected to one of
its two outputs and adapts its own configuration to use them. There is
currently no support for merged/split displays.
Note regarding the clock configuration:
The LDB output clock should be absolutely identical to the LCDIF output
clock so both blocks can talk to each other synchronously. However, the
LDB clock has an internal divisor of 7 (respectively 3.5 in dual
configuration) which means the LDB input clock must be explicitly set
once we know the configuration.
This driver was tested on i.MX8MP using a single panel connected to the
LVDS2 interface.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
