linux-kernel - [PATCH 0/3] Touch Bar and Keyboard backlight driver for Intel Macs

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Date:   Fri, 10 Feb 2023 03:41:45 +0000
From:   Aditya Garg <gargaditya08@...e.com>
To:     Jiri Kosina <jikos@...nel.org>,
        "jkosina@...e.cz" <jkosina@...e.cz>,
        "benjamin.tissoires@...hat.com" <benjamin.tissoires@...hat.com>,
        Andy Shevchenko <andy@...radead.org>,
        "andy.shevchenko@...il.com" <andy.shevchenko@...il.com>
CC:     LKML <linux-kernel@...r.kernel.org>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "ronald@...ovation.ch" <ronald@...ovation.ch>,
        "kekrby@...il.com" <kekrby@...il.com>,
        Orlando Chamberlain <orlandoch.dev@...il.com>
Subject: [PATCH 0/3] Touch Bar and Keyboard backlight driver for Intel Macs

Greetings from t2linux!

2 years ago an attempt was made to send the driver for the Touch Bar on
MacBook Pros by Ronald Tschalär [1].

Due to some issues pointed out by the maintainers upstream, unfortunately
it didn't make it upstream. Now we at t2linux [2] have addressed those
issues in this patchset and also improved the touchbar driver for the T2
Macs. We also have added a new driver for keyboard backlight support on
T2 MacBooks with Magic Keyboard.

The first 2 patches of this patchset are the ones sent by Ronald before,
with the issues addressed as pointed out in [1].

The third patch introduces a new driver, apple-magic-backlight, which adds
support for keyboard backlight on T2 MacBooks with the Magic Keyboard.

Note: Apart from these drivers, for the T2 Macs, an additional driver
shall be required to communicate with the T2 Security Chip, as the Touch
Bar, the internal keyboard, trackpad, camera, ambient light sensor,
headphone controls, and NCM Ethernet are accessed through a USB VHCI
created with DMA channels to the "T2 Bridge Controller" 106b:1801 PCI
device. A work in progress linux driver called apple-bce [3], or USB
device passthrough to a Linux VM guest on a Windows host with Apple
Bootcamp drivers can be used to get Linux these USB devices working and
test these patches.

[1] https://lore.kernel.org/lkml/20210228012643.69944-1-ronald@innovation.ch/
[2] https://t2linux.org/
[3] https://github.com/t2linux/apple-bce-drv

Orlando Chamberlain (1):
  HID: apple-magic-backlight: Add driver for keyboard backlight on
    internal Magic Keyboards

Ronald Tschalär (2):
  HID: apple-ibridge: Add Apple iBridge HID driver for T1 chip
  HID: apple-touchbar: Add driver for the Touch Bar on MacBook Pros

 MAINTAINERS                         |    6 +
 drivers/hid/Kconfig                 |   39 +
 drivers/hid/Makefile                |    3 +
 drivers/hid/apple-ibridge.c         |  610 +++++++++++
 drivers/hid/apple-ibridge.h         |   15 +
 drivers/hid/apple-magic-backlight.c |  143 +++
 drivers/hid/apple-touchbar.c        | 1500 +++++++++++++++++++++++++++
 drivers/hid/hid-ids.h               |    1 +
 drivers/hid/hid-quirks.c            |    5 +
 9 files changed, 2322 insertions(+)
 create mode 100644 drivers/hid/apple-ibridge.c
 create mode 100644 drivers/hid/apple-ibridge.h
 create mode 100644 drivers/hid/apple-magic-backlight.c
 create mode 100644 drivers/hid/apple-touchbar.c

-- 
2.37.2