There is a lot of duplication of code in the HID low level drivers.
Better have everything in one place so we can eventually extend it
in a generic way.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211202095334.14399-4-benjamin.tissoires@redhat.com
We want to convert from 16 bit (unsigned) little endian values contained
in a packed struct to CPU native endian values here, not the other way
around. So replace cpu_to_le16() with get_unaligned_le16(), using the
latter instead of le16_to_cpu() to acknowledge that we are reading from
a packed struct.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: b05ff1002a ("HID: Add support for Surface Aggregator Module HID transport")
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Add a HID transport driver to support integrated HID devices on newer
Microsoft Surface models (specifically 7th-generation, i.e. Surface
Laptop 3, Surface Book 3, and later).
On those models, the internal keyboard and touchpad (as well as some
other HID devices with currently unknown function) are connected via the
generic HID subsystem (TC=0x15) of the Surface System Aggregator Module
(SSAM). This subsystem provides a generic HID transport layer, support
for which is implemented by this driver.
Co-developed-by: Blaž Hrastnik <blaz@mxxn.io>
Signed-off-by: Blaž Hrastnik <blaz@mxxn.io>
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
