linux-kernel - [RFC PATCH v3 0/3] drm/mipi-dsi: 16-bit Brightness Endianness Fix

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230116224909.23884-1-mailingradian@gmail.com>
Date:   Mon, 16 Jan 2023 17:49:06 -0500
From:   Richard Acayan <mailingradian@...il.com>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Emil Velikov <emil.l.velikov@...il.com>,
        Vinay Simha BN <simhavcs@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Daniel Mentz <danielmentz@...gle.com>,
        Caleb Connolly <caleb@...nolly.tech>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Richard Acayan <mailingradian@...il.com>
Subject: [RFC PATCH v3 0/3] drm/mipi-dsi: 16-bit Brightness Endianness Fix

Changes since v2 (20230114010006.50471-1-mailingradian@...il.com):
 - patch vtdr6130 to use _large (3/3)
 - remove Change-Id again (1/3)
 - change patch subject (1-2/3)
 - correct function name in patch description (2/3)
 - add Tested-by tags (1-2/3)

Changes since v1 (20230113041848.200704-1-mailingradian@...il.com):
 - move 16-bit brightness handling to new functions and revert API
   change (1/2)
 - remove Change-Id in compliance with checkpatch.pl (1/2)
 - separate panel driver changes (2/2)

This series adds proper support for 16-bit MIPI DSI brightness and
cleans up existing panel drivers with 16-bit brightness.

Both setting and getting works on an external S6E3FA7
(max_brightness = 1023) panel driver with the first patch.

Even though this originally fixed both 8-bit and 16-bit brightness, the
8-bit fix is omitted for now because it affects ~13 panels that would
need to be tested:

    panel-asus-z00t-tm5p5-n35596.c
    panel-boe-bf060y8m-aj0.c
    panel-dsi-cm.c
    panel-ebbg-ft8719.c
    panel-jdi-fhd-r63452.c
    panel-jdi-lt070me05000.c
    panel-novatek-nt35510.c
    panel-novatek-nt35560.c
    panel-orisetech-otm8009a.c
    panel-raydium-rm67191.c
    panel-samsung-s6e63j0x03.c
    panel-sony-acx565akm.c
    panel-sony-tulip-truly-nt35521.c

Daniel Mentz (1):
  drm/mipi-dsi: Fix byte order of 16-bit DCS set/get brightness

Richard Acayan (2):
  drm/panel: sofef00: Use 16-bit brightness function
  drm/panel: vtdr6130: Use 16-bit brightness function

 drivers/gpu/drm/drm_mipi_dsi.c                | 52 +++++++++++++++++++
 drivers/gpu/drm/panel/panel-samsung-sofef00.c |  9 +---
 .../gpu/drm/panel/panel-visionox-vtdr6130.c   |  5 +-
 include/drm/drm_mipi_dsi.h                    |  4 ++
 4 files changed, 59 insertions(+), 11 deletions(-)

-- 
2.39.0