2016 and 2017 MacBook Pro's have a T1 chip that drives the Touch Bar, ambient light sensor, webcam, and fingerprint sensor; this shows up as an iBridge USB device in the system. These patches provide initial support for the Touch Bar and ALS - the webcam is already handled by existing drivers, and no information is currently known on how to access the fingerprint sensor (other than it's apparently via one of the extra interfaces available in the OS X USB configuration). One thing of note here is that both the ALS and (some of) the Touch Bar functionality are exposed via the same USB interface (and hence same hid_device), so both drivers need to share this device. This necessitated creating a demux hid driver in the mfd driver to which multiple hid devices can be attached, and implied not being able to make use of the existing hid-sensor-als driver. Ronald Tschalär (3): mfd: apple-ibridge: Add Apple iBridge MFD driver. HID: apple-ib-tb: Add driver for the Touch Bar on MacBook Pro's. iio: light: apple-ib-als: Add driver for ALS on iBridge chip. drivers/hid/Kconfig | 10 + drivers/hid/Makefile | 1 + drivers/hid/apple-ib-tb.c | 1288 +++++++++++++++++++++++++++++ drivers/iio/light/Kconfig | 12 + drivers/iio/light/Makefile | 1 + drivers/iio/light/apple-ib-als.c | 694 ++++++++++++++++ drivers/mfd/Kconfig | 15 + drivers/mfd/Makefile | 1 + drivers/mfd/apple-ibridge.c | 883 ++++++++++++++++++++ include/linux/mfd/apple-ibridge.h | 39 + 10 files changed, 2944 insertions(+) create mode 100644 drivers/hid/apple-ib-tb.c create mode 100644 drivers/iio/light/apple-ib-als.c create mode 100644 drivers/mfd/apple-ibridge.c create mode 100644 include/linux/mfd/apple-ibridge.h -- 2.20.1
