Messages in this thread |  | | From | Alistair Francis <> | Subject | [PATCH v6 0/4] Add support for the Cypress cyttsp5 | Date | Sun, 27 Feb 2022 22:33:14 +1000 |
| |
This patch series builds on top of [1] and adds support for the cyttsp5 touchscreen controller for the reMarkable 2.
I first tried to add an I2C HID device. Although the cyttsp5 has some HID looking aspects it is not HID compatible. Just in trying to probe the device I found: - The HID descriptor has extra padding - The HID descriptor sets the high bytes of the descriptor length - The HID descriptor has extra unrecognised tags - The HID reset command doesn't appear to work
I don't think there is a way to use the I2C HID framework with the cyttsp5. For anyone interested you can see the work here [2]. In that branch though I can only obtain a HID descriptor, nothing else works without more core changes.
So instead I rebased the series from [1]. Converted to the new yaml DTS documentation, added regulator support and fixed a x/y miscalculation bug.
1: https://lwn.net/ml/linux-kernel/20180703094309.18514-1-mylene.josserand@bootlin.com/ 2: https://github.com/alistair23/linux/commits/rM2-mainline-cyttsp5-hid
v6: - Use reg for the button properties v5: - Address review comments from v4
Alistair Francis (4): Input: Add driver for Cypress Generation 5 touchscreen dt-bindings: input: Add Cypress TT2100 touchscreen controller ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen ARM: dts: imx7d-remarkable2: Enable the cyttsp5
.../input/touchscreen/cypress,tt21000.yaml | 98 ++ arch/arm/boot/dts/imx7d-remarkable2.dts | 97 ++ arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/input/touchscreen/Kconfig | 16 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 902 ++++++++++++++++++ 6 files changed, 1115 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c
-- 2.34.1
|  |