linux-kernel - [PATCH v4 0/2] Input: Add Cypress Gen5 Touchscreen driver

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Message-Id: <20171201153957.13053-1-mylene.josserand@free-electrons.com>
Date:   Fri,  1 Dec 2017 16:39:55 +0100
From:   Mylène Josserand 
        <mylene.josserand@...e-electrons.com>
To:     dmitry.torokhov@...il.com, robh+dt@...nel.org, mark.rutland@....com
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        devicetree@...r.kernel.org, mylene.josserand@...e-electrons.com,
        thomas.petazzoni@...e-electrons.com,
        maxime.ripard@...e-electrons.com
Subject: [PATCH v4 0/2] Input: Add Cypress Gen5 Touchscreen driver

Hi everyone,

Here is a V4 series to add the driver of the touchscreen Cypress,
TrueTouch Generation 5.
Based on last master branch of "input" kernel's tree, last commit c1b433e04ef9.

This touchscreen is similar to Cypress generation 4 but the
registers are different.

This driver uses regmap as it is possible to use I2C or SPI
busses. Currently, only the I2C support are available in the driver.
This touchscreen can handle some multitouch events as buttons using
some defined zones. That is why the driver handles buttons and
multitouch events.

Changes since v3:
   - Rebased on last input's branch
   - Changed the CRC table to use crc_itu_t_table instead of
   crc_ccitt_false_table which is not merged.
   - Added selection of CRC_ITU_T on KConfig
Changes since v2:
   - Removed pinctrl in dt-binding example which is uncessecary.
   - Added Acked-by and Reviewed-by received.
Changes since v1:
   - Updated the driver according to reviews. Most important modifications:
   removed unnecessary mutex, updated dev_err output, handled return cases
   in a better way, created a HID_ENUM, removed magic value, used an
   existing CRC table and used "linux-keycodes" instead of sub-nodes.
   - Updated the dt-bindings to use linux-keycodes and removed properties'
   description that comes from touchscreen's binding.

Patch 01: Add the basis of the driver for Cypress Gen5 Touchscreen.
Patch 02: Add the binding documentation for this driver.

If you have any remarks, let me know.

Thank you in advance,
Mylène

Mylène Josserand (2):
  Input: Add driver for Cypress Generation 5 touchscreen
  dt-bindings: input: Add documentation for cyttsp5

 .../bindings/input/touchscreen/cypress,cyttsp5.txt |   39 +
 drivers/input/touchscreen/Kconfig                  |   16 +
 drivers/input/touchscreen/Makefile                 |    1 +
 drivers/input/touchscreen/cyttsp5.c                | 1110 ++++++++++++++++++++
 4 files changed, 1166 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,cyttsp5.txt
 create mode 100644 drivers/input/touchscreen/cyttsp5.c

-- 
2.11.0