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This patch adds support for Hycon HY46XX.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Link: https://lore.kernel.org/r/20210413144446.2277817-4-giulio.benetti@benettiengineering.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This adds device tree bindings for the Hycon HY46XX touchscreen series.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210413144446.2277817-3-giulio.benetti@benettiengineering.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Update Documentation/devicetree/bindings/vendor-prefixes.yaml to
include "hycon" as a vendor prefix for "Hycon Technology".
Company website: https://www.hycontek.com/
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210413144446.2277817-2-giulio.benetti@benettiengineering.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This device is certainly a very simple touchscreen so
we set INPUT_MT_DIRECT.
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210408131153.3446138-9-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The driver is certainly reporting pressure in cyttsp_report_tchdata()
with input_report_abs(input, ABS_MT_TOUCH_MAJOR, tch->z); so we should
also advertise this capability.
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210408131153.3446138-8-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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When I test to use the CY8CTMA340 with PostmarketOS I don't have any
problem whatsoever in dropping this phys path, it finds and uses the
touchscreen just as well. I suppose it is because userspace is using
modern input libraries.
I challenge the maintainers to point out a valid and still used
userspace that actually need this. I say we drop it.
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210408131153.3446138-7-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The data sheet for CY8CTMA340 specifies that the reset pulse shall be at
least 1 ms. Specify 1-2 ms with usleep_range() to cut some slack for the
scheduler.
Curiously the datasheet does not specify how long we have to wait after a
hard reset until the chip is up, but I have found a vendor tree (Samsung
GT-S7710) that has code for this touch screen and there this is set to 5
ms so I use this with the same 1 ms fuzz.
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210408131153.3446138-6-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Provide a proper error message when attempting to exit boot loader mode
and failing, which is something that happened to me.
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210408131153.3446138-5-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Fix the following gcc warning:
drivers/input/serio/apbps2.c:106:16: warning: variable ‘tmp’ set but not
used [-Wunused-but-set-variable].
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1617958859-64707-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The Melfas MMS136 is similar to the other MMS variants but
has event packages of 6 bytes rather than 8 as the others.
The define is named FINGER_EVENT_SZ in the vendor drivers
so I renamed it from MMS*_PACKET_SZ to MMS*_EVENT_SZ.
After this patch, the touchscreen on the Samsung GT-I8530
works fine with PostmarketOS.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210404232619.3092682-1-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This converts the Melfas MMS114 bindings and extend like this:
- Require nodename touchscreen@ (this seems to be the case for
all in-tree DTS files)
- Add the mms134s and mms136 compatibles
- Add the avdd and vdd power supplies
- Define the I2C clock frequency property
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210330201233.2360006-1-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Add support for ILITEK Lego series of touch devices.
Lego series includes ILITEK 213X/23XX/25XX.
Tested/passed with evaluation board with ILI2520/2322 IC.
Signed-off-by: Joe Hung <joe_hung@ilitek.com>
Link: https://lore.kernel.org/r/20210324122601.125873-2-joe_hung@ilitek.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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