diff options
| author | Kerem Karabay <kekrby@gmail.com> | 2025-02-26 16:04:36 +0000 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2025-03-03 16:13:33 +0100 |
| commit | 0670c2f56e45b3f4541985a9ebe06d04308e43b0 (patch) | |
| tree | c03bd81669c2dbb729f1735e90176712d1c63512 /drivers/gpu/drm/tiny/Kconfig | |
| parent | c9043706cb11b8005e145debe0a3211acd08e2c1 (diff) | |
drm/tiny: add driver for Apple Touch Bars in x86 Macs
The Touch Bars found on x86 Macs support two USB configurations: one
where the device presents itself as a HID keyboard and can display
predefined sets of keys, and one where the operating system has full
control over what is displayed.
This commit adds support for the display functionality of the second
configuration. Functionality for the first configuration has been
merged in the HID tree.
Note that this driver has only been tested on T2 Macs, and only includes
the USB device ID for these devices. Testing on T1 Macs would be
appreciated.
Credit goes to Ben (Bingxing) Wang on GitHub for reverse engineering
most of the protocol.
Also, as requested by Andy, I would like to clarify the use of __packed
structs in this driver:
- All the packed structs are aligned except for appletbdrm_msg_information.
- We have to pack appletbdrm_msg_information since it is requirement of
the protocol.
- We compared binaries compiled by keeping the rest structs __packed and
not __packed using bloat-o-meter, and __packed was not affecting code
generation.
- To maintain consistency, rest structs have been kept __packed.
I would also like to point out that since the driver was reverse-engineered
the actual data types of the protocol might be different, including, but
not limited to, endianness.
Link: https://github.com/imbushuo/DFRDisplayKm
Signed-off-by: Kerem Karabay <kekrby@gmail.com>
Co-developed-by: Atharva Tiwari <evepolonium@gmail.com>
Signed-off-by: Atharva Tiwari <evepolonium@gmail.com>
Co-developed-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Aun-Ali Zaidi <admin@kodeit.net>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/FCAC702C-F84A-47F9-8C78-BBBB34D08500@live.com
Diffstat (limited to 'drivers/gpu/drm/tiny/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/tiny/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index 94cbdb1337c0..54c84c9801c1 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -1,5 +1,17 @@ # SPDX-License-Identifier: GPL-2.0-only +config DRM_APPLETBDRM + tristate "DRM support for Apple Touch Bars" + depends on DRM && USB && MMU + select DRM_GEM_SHMEM_HELPER + select DRM_KMS_HELPER + help + Say Y here if you want support for the display of Touch Bars on x86 + MacBook Pros. + + To compile this driver as a module, choose M here: the + module will be called appletbdrm. + config DRM_ARCPGU tristate "ARC PGU" depends on DRM && OF |