linux-toradex.git/drivers/input/touchscreen/zinitix.c, branch v5.17-rc4

Merge branch 'next' into for-linus

2022-01-15T20:09:44+00:00

Prepare input updates for 5.17 merge window.

Input: zinitix - add compatible for bt532

2022-01-09T07:27:06+00:00

Zinitix BT532 is another touch controller that seem to implement the
same interface as an already supported BT541. Add it to the driver.

Reviewed-by: Linus Walleij 
Signed-off-by: Nikita Travkin 
Link: https://lore.kernel.org/r/20220106072840.36851-5-nikita@trvn.ru
Signed-off-by: Dmitry Torokhov

Input: zinitix - handle proper supply names

2022-01-09T07:27:05+00:00

The supply names of the Zinitix touchscreen were a bit confused, the new
bindings rectifies this.

To deal with old and new devicetrees, first check if we have "vddo" and in
case that exists assume the old supply names. Else go and look for the new
ones.

We cannot just get the regulators since we would get an OK and a dummy
regulator: we need to check explicitly for the old supply name.

Use struct device *dev as a local variable instead of the I2C client since
the device is what we are actually obtaining the resources from.

Signed-off-by: Linus Walleij 
[Slightly changed the legacy regulator detection]
Signed-off-by: Nikita Travkin 
Link: https://lore.kernel.org/r/20220106072840.36851-4-nikita@trvn.ru
Signed-off-by: Dmitry Torokhov

Input: zinitix - make sure the IRQ is allocated before it gets enabled

2022-01-09T07:24:28+00:00

Since irq request is the last thing in the driver probe, it happens
later than the input device registration. This means that there is a
small time window where if the open method is called the driver will
attempt to enable not yet available irq.

Fix that by moving the irq request before the input device registration.

Reviewed-by: Linus Walleij 
Fixes: 26822652c85e ("Input: add zinitix touchscreen driver")
Signed-off-by: Nikita Travkin 
Link: https://lore.kernel.org/r/20220106072840.36851-2-nikita@trvn.ru
Signed-off-by: Dmitry Torokhov

Input: move to use request_irq by IRQF_NO_AUTOEN flag

2021-03-25T22:27:56+00:00

disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable because of requesting.

On the other hand, request_irq() after setting IRQ_NOAUTOEN as
below
irq_set_status_flags(irq, IRQ_NOAUTOEN);
request_irq(dev, irq...);
can also be replaced by request_irq() with IRQF_NO_AUTOEN flag.

Signed-off-by: Barry Song 
Link: https://lore.kernel.org/r/20210302224916.13980-3-song.bao.hua@hisilicon.com
Signed-off-by: Dmitry Torokhov

Input: zinitix - fix return type of zinitix_init_touch()

2021-02-19T19:02:42+00:00

zinitix_init_touch() returns error code or 0 for success and therefore
return type must be int, not bool.

Fixes: 26822652c85e ("Input: add zinitix touchscreen driver")
Reported-by: kernel test robot 
Reported-by: Jiapeng Chong 
Link: https://lore.kernel.org/r/YC8z2bXc3Oy8pABa@google.com
Signed-off-by: Dmitry Torokhov

Input: zinitix - remove unneeded semicolon

2021-02-16T21:05:54+00:00

Eliminate the following coccicheck warning:
./drivers/input/touchscreen/zinitix.c:164:31-32: Unneeded semicolon

Reported-by: Abaci Robot 
Signed-off-by: Yang Li 
Link: https://lore.kernel.org/r/1612319443-115831-1-git-send-email-yang.lee@linux.alibaba.com
Signed-off-by: Dmitry Torokhov

Input: use input_device_enabled()

2020-12-03T06:10:33+00:00

Use the newly added helper in relevant input drivers.

Signed-off-by: Andrzej Pietrasiewicz 
Link: https://lore.kernel.org/r/20200608112211.12125-3-andrzej.p@collabora.com
Signed-off-by: Dmitry Torokhov

Input: add zinitix touchscreen driver

2020-10-04T23:08:09+00:00

Add support for the bt541 touchscreen IC from zinitix, loosely based on
downstream driver. The driver currently supports multitouch (5 touch points).
The bt541 seems to support touch keys, but the support was not added because
that functionality is not being utilized by the touchscreen used for testing.
Based on the similartities between downstream drivers, it seems likely that
other similar touchscreen ICs can be supported with this driver in the future.

Signed-off-by: Michael Srba 
Link: https://lore.kernel.org/r/20201001122949.16846-1-michael.srba@seznam.cz
Signed-off-by: Dmitry Torokhov