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Douglas Anderson 5ead9b5b15 drm/panel-simple: Power the panel when probing DP AUX backlight
When I tried booting up a device that needed the DP AUX backlight, I
found an error in the logs:
  panel-simple-dp-aux: probe of aux-ti_sn65dsi86.aux.0 failed with error -110

The aux transfers were failing because the panel wasn't powered. Just
like when reading the EDID we need to power the panel when trying to
talk to it. Add the needed pm_runtime calls.

After I do this I can successfully probe the panel and adjust the
backlight on my board.

Fixes: bfd451403d ("drm/panel-simple: Support DP AUX backlight")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210714093334.1.Idb41f87e5abae4aee0705db7458b0097fc50e7ab@changeid
2021-07-15 08:02:38 -07:00
arch arm64: dts: qcom: sc7180-trogdor: Move panel under the bridge chip 2021-06-11 12:31:59 -07:00
block block-5.13-2021-05-22 2021-05-22 07:40:34 -10:00
certs Kbuild updates for v5.13 (2nd) 2021-05-08 10:00:11 -07:00
crypto
Documentation dt-bindings: display/panel: Add Innolux EJ030NA 2021-07-14 21:43:48 +01:00
drivers drm/panel-simple: Power the panel when probing DP AUX backlight 2021-07-15 08:02:38 -07:00
fs userfaultfd: hugetlbfs: fix new flag usage in error path 2021-05-22 15:09:07 -10:00
include drm/dp: Move panel DP AUX backlight support to drm_dp_helper 2021-07-13 06:38:37 -07:00
init Merge branch 'akpm' (patches from Andrew) 2021-05-07 00:34:51 -07:00
ipc ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry 2021-05-22 15:09:07 -10:00
kernel Two locking fixes: 2021-05-23 06:30:08 -10:00
lib lib: kunit: suppress a compilation warning of frame size 2021-05-22 15:09:07 -10:00
LICENSES
mm userfaultfd: hugetlbfs: fix new flag usage in error path 2021-05-22 15:09:07 -10:00
net Char/misc driver fixes for 5.13-rc3 2021-05-20 06:31:52 -10:00
samples Kbuild updates for v5.13 (2nd) 2021-05-08 10:00:11 -07:00
scripts kbuild: dummy-tools: adjust to stricter stackprotector check 2021-05-17 12:10:03 +09:00
security trusted-keys: match tpm_get_ops on all return paths 2021-05-12 22:36:37 +03:00
sound Merge tag 'asoc-hdmi-codec-improvements-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-misc-next 2021-06-23 14:32:27 +02:00
tools powerpc fixes for 5.13 #4 2021-05-23 06:07:33 -10:00
usr
virt kvm: Cap halt polling at kvm->max_halt_poll_ns 2021-05-07 06:06:22 -04:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Merge drm/drm-fixes into drm-misc-fixes 2021-05-11 13:35:52 +02:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS drm/bochs: Move to tiny/ 2021-07-05 08:54:44 +02:00
Makefile Linux 5.13-rc3 2021-05-23 11:42:48 -10:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.