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Ville Syrjälä 94ae4612ea drm/i915/dsi: Go back to the previous INIT_OTP/DISPLAY_ON order, mostly 
Reinstate commit 88b065943c ("drm/i915/dsi: Do display on
sequence later on icl+"), for the most part. Turns out some
machines (eg. Chuwi Minibook X) really do need that updated order.
It is also the order the Windows driver uses.

However we can't just undo the revert since that would again
break Lenovo 82TQ. After staring at the VBT sequences for both
machines I've concluded that the Lenovo 82TQ sequences look
somewhat broken:
 - INIT_OTP is not present at all
 - what should be in INIT_OTP is found in DISPLAY_ON
 - what should be in DISPLAY_ON is found in BACKLIGHT_ON
   (along with the actual backlight stuff)

The Chuwi Minibook X on the other hand has a full complement
of sequences in its VBT.

So let's try to deal with the broken sequences in the
Lenovo 82TQ VBT by simply swapping the (non-existent)
INIT_OTP sequence with the DISPLAY_ON sequence. Thus we
execute DISPLAY_ON when intending to execute INIT_OTP,
and execute nothing at all when intending to execute
DISPLAY_ON. That should be 100% equivalent to the
revert, for such broken VBTs.

Cc: stable@vger.kernel.org
Fixes: dc524d0597 ("Revert "drm/i915/dsi: Do display on sequence later on icl+"")
References: https://gitlab.freedesktop.org/drm/intel/-/issues/10071
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10334
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240305083659.8396-1-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-03-07 02:15:00 +02:00
arch Linux 6.8-rc6 2024-02-26 11:41:07 +01:00
block block: sed-opal: handle empty atoms when parsing response 2024-02-16 15:52:45 -07:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto crypto: algif_hash - Remove bogus SGL free on zero-length error path 2024-02-02 18:08:12 +08:00
Documentation Linux 6.8-rc6 2024-02-26 11:41:07 +01:00
drivers drm/i915/dsi: Go back to the previous INIT_OTP/DISPLAY_ON order, mostly 2024-03-07 02:15:00 +02:00
fs bcachefs fixes for 6.8-rc6 2024-02-25 15:31:57 -08:00
include drm/i915: Add missing doc for drm_i915_reset_stats 2024-03-01 10:49:58 +01:00
init update workarounds for gcc "asm goto" issue 2024-02-15 11:14:33 -08:00
io_uring io_uring/net: fix multishot accept overflow handling 2024-02-14 18:30:19 -07:00
ipc shm: Slim down dependencies 2023-12-20 19:26:31 -05:00
kernel Including fixes from bpf and netfilter. 2024-02-22 09:57:58 -08:00
lib lib/Kconfig.debug: TEST_IOV_ITER depends on MMU 2024-02-20 14:20:48 -08:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm cxl fixes for 6.8-rc6 2024-02-24 15:53:40 -08:00
net l2tp: pass correct message length to ip6_append_data 2024-02-22 10:42:17 +01:00
rust Rust changes for v6.8 2024-01-11 13:05:41 -08:00
samples work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
scripts Including fixes from bpf and netfilter. 2024-02-22 09:57:58 -08:00
security lsm/stable-6.8 PR 20240215 2024-02-16 07:58:43 -08:00
sound ALSA: usb-audio: More relaxed check of MIDI jack names 2024-02-15 16:56:05 +01:00
tools cxl fixes for 6.8-rc6 2024-02-24 15:53:40 -08:00
usr Kbuild updates for v6.8 2024-01-18 17:57:07 -08:00
virt Generic: 2024-01-17 13:03:37 -08:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig
.editorconfig Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.mailmap MAINTAINERS: mailmap: update Shakeel's email address 2024-02-20 14:20:50 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: supplement of zswap maintainers update 2024-01-25 23:52:21 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: Update drm.git URL 2024-02-27 13:47:01 +01:00
Makefile Linux 6.8-rc6 2024-02-25 15:46:06 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.