kernel/linux.git/drivers/input/touchscreen/exc3000.c, branch v6.1.168

Input: exc3000 - properly stop timer on shutdown

2023-03-17T07:50:19+00:00

[ Upstream commit 79c81d137d36f9635bbcbc3916c0cccb418a61dd ] We need to stop the timer on driver unbind or probe failures, otherwise we get UAF/Oops. Fixes: 7e577a17f2ee ("Input: add I2C attached EETI EXC3000 multi touch driver") Reported-by: "Stahl, Michael" Link: https://lore.kernel.org/r/Y9dK57BFqtlf8NmN@google.com Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin

Input: exc3000 - fix return value check of wait_for_completion_timeout

2022-06-29T05:45:43+00:00

wait_for_completion_timeout() returns unsigned long not int. It returns 0 if timed out, and positive if completed. The check for <= 0 is ambiguous and should be == 0 here indicating timeout which is the only error case. Fixes: 102feb1ddfd0 ("Input: exc3000 - factor out vendor data request") Signed-off-by: Miaoqian Lin Link: https://lore.kernel.org/r/20220411105828.22140-1-linmq006@gmail.com Signed-off-by: Dmitry Torokhov

Input: exc3000 - add type sysfs attribute

2021-03-08T05:56:50+00:00

Add a sysfs attribute to query the type of the touchscreen device. Signed-off-by: Lucas Stach Link: https://lore.kernel.org/r/20210125182527.1225245-5-l.stach@pengutronix.de Signed-off-by: Dmitry Torokhov

Input: exc3000 - fix firmware version query for device in bootloader

2021-03-08T05:56:49+00:00

If the device is stuck in bootloader (maybe due to blank or corrupted application firmware) it won't answer a query for the firmware version. Fall back to returning the bootloader version in that case. Signed-off-by: Lucas Stach Link: https://lore.kernel.org/r/20210125182527.1225245-4-l.stach@pengutronix.de Signed-off-by: Dmitry Torokhov

Input: exc3000 - factor out vendor data request

2021-03-08T05:56:47+00:00

Factor out the vendor data i2c request handling to make it reusable for other functions. Also don't cache the model and firmware version string in the device private data as we never use the cached version, but always read from the device. Signed-off-by: Lucas Stach Link: https://lore.kernel.org/r/20210125182527.1225245-3-l.stach@pengutronix.de Signed-off-by: Dmitry Torokhov

Input: exc3000 - split MT event handling from IRQ handler

2021-03-08T05:56:46+00:00

Split out the multitouch event handling into its own function to allow other events to be handled in the IRQ handler without disturbing the MT handling. Now that things are separated a bit more, stop treating vendor data requests special by cehcking for a locked mutex, but just look at the event ID to figure out if the message is a MT report or a vendor data query reply. Signed-off-by: Lucas Stach Link: https://lore.kernel.org/r/20210125182527.1225245-2-l.stach@pengutronix.de Signed-off-by: Dmitry Torokhov

Input: exc3000 - add support to query model and fw_version

2020-08-07T00:34:19+00:00

Expose model and fw_version via sysfs. Also query the model in probe to make sure, that the I2C communication with the device works before successfully probing the driver. This is a bit complicated, since EETI devices do not have a sync interface. Sending the commands and directly reading does not work. Sending the command and waiting for some time is also not an option, since there might be touch events in the mean time. Last but not least we do not cache the results, since this interface can be used to check the I2C communication is still working as expected. Reviewed-by: Enric Balletbo i Serra Signed-off-by: Sebastian Reichel Link: https://lore.kernel.org/r/20200805160520.456570-5-sebastian.reichel@collabora.com Signed-off-by: Dmitry Torokhov

Input: exc3000 - add reset gpio support

2020-08-07T00:34:18+00:00

Add basic support for an optional reset gpio. Reviewed-by: Enric Balletbo i Serra Signed-off-by: Sebastian Reichel Acked-by: Rob Herring Link: https://lore.kernel.org/r/20200805160520.456570-4-sebastian.reichel@collabora.com Signed-off-by: Dmitry Torokhov

Input: exc3000 - add EXC80H60 and EXC80H84 support

2020-08-07T00:34:17+00:00

This adds support for EXC80H60 and EXCH84 controllers, which use a different event type id and have two extra bits for the resolution (so the maximum is 16K instead of 4K). Signed-off-by: Sebastian Reichel Acked-by: Rob Herring Link: https://lore.kernel.org/r/20200805160520.456570-3-sebastian.reichel@collabora.com Signed-off-by: Dmitry Torokhov

Input: exc3000 - switch to i2c's probe_new API

2020-07-07T00:56:44+00:00

Switch to the "new" I2C probe API. Signed-off-by: Sebastian Reichel Reviewed-by: Enric Balletbo i Serra Link: https://lore.kernel.org/r/20200520153936.46869-3-sebastian.reichel@collabora.com Signed-off-by: Dmitry Torokhov