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author | 2021-04-23 09:58:55 -0700 | |
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committer | 2021-05-03 13:21:08 -0700 | |
commit | bf73537f411b0d4f546adfb028e915eb633032c5 (patch) | |
tree | 4d98ccd219d37eba77170cffaea453e2f39f4b8f /tools/perf/scripts/python/export-to-postgresql.py | |
parent | drm/bridge: ti-sn65dsi86: Move all the chip-related init to the start (diff) | |
download | linux-dev-bf73537f411b0d4f546adfb028e915eb633032c5.tar.xz linux-dev-bf73537f411b0d4f546adfb028e915eb633032c5.zip |
drm/bridge: ti-sn65dsi86: Break GPIO and MIPI-to-eDP bridge into sub-drivers
Let's use the newly minted aux bus to break up the driver into sub
drivers. We're not doing a full breakup here: all the code is still in
the same file and remains largely untouched. The big goal here of
using sub-drivers is to allow part of our code to finish probing even
if some other code needs to defer. This can solve some chicken-and-egg
problems. Specifically:
- In commit 48834e6084f1 ("drm/panel-simple: Support hpd-gpios for
delaying prepare()") we had to add a bit of a hack to simpel-panel
to support HPD showing up late. We can get rid of that hack now
since the GPIO part of our driver can finish probing early.
- We have a desire to expose our DDC bus to simple-panel (and perhaps
to a backlight driver?). That will end up with the same
chicken-and-egg problem. A future patch to move this to a sub-driver
will fix it.
- If/when we support the PWM functionality present in the bridge chip
for a backlight we'll end up with another chicken-and-egg
problem. If we allow the PWM to be a sub-driver too then it solves
this problem.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210423095743.v5.9.I3e68fa38c4ccbdbdf145cad2b01e83a1e5eac302@changeid
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