linux-toradex.git/drivers/input/misc/rotary_encoder.c, branch v4.9.16

Input: rotary_encoder - support binary encoding of states

2016-07-28T01:26:10+00:00

It's not advisable to use this encoding, but to support existing devices
add support for this to the driver.

Signed-off-by: Uwe Kleine-König 
Acked-by: Rob Herring 
Signed-off-by: Dmitry Torokhov

Input: rotary-encoder - fix bare use of 'unsigned'

2016-05-10T00:06:31+00:00

fix checkpatch.pl warning about 'Prefer 'unsigned int' to bare use of
'unsigned''

Signed-off-by: Clifton Barnes 
Signed-off-by: Dmitry Torokhov

Input: rotary-encoder - support more than 2 gpios as input

2016-03-02T23:48:05+00:00

This changes how the used gpios are stored (i.e. a struct gpio_descs
instead of two struct gpio_desc) and as with >2 gpios the states are
numbered differently the function rotary_encoder_get_state returns
unencoded numbers instead of grey encoded numbers before. The latter has
some implications on how the returned value is used and so the change is
bigger than one might expect at first.

Signed-off-by: Uwe Kleine-König 
Acked-by: Rob Herring 
Acked-by: Daniel Mack 
Signed-off-by: Dmitry Torokhov

Input: rotary_encoder - move away from platform data structure

2016-03-02T23:48:05+00:00

Drop support for platform data passed via a C-structure and switch to
device properties instead, which should make the driver compatible with all
platforms: OF, ACPI and static boards. Static boards should use property
sets to communicate device parameters to the driver.

Signed-off-by: Dmitry Torokhov

Input: rotary_encoder - use input_set_capability()

2016-03-02T17:32:07+00:00

Instead of manipulating capability bits directly let's use appropriate
helpers. Also there is no need to explicitly set EV_ABS when calling
input_set_abs_params().

Signed-off-by: Dmitry Torokhov

Input: rotary_encoder - convert to use gpiod API

2016-03-02T17:31:49+00:00

Instead of using old GPIO API, let's switch to GPIOD API, which
automatically handles polarity.

Signed-off-by: Dmitry Torokhov

Input: rotary_encoder - mark PM methods as __maybe_unused

2016-03-02T17:30:07+00:00

Instead of guarding PM methods with #ifdef let's mark them as
__maybe_unused as it allows for better compile coverage.

Signed-off-by: Dmitry Torokhov

Input: rotary_encoder - use threaded irqs

2016-03-02T17:30:06+00:00

Convert to use threaded IRQs to support GPIOs that can sleep.
Protect the irq handler with mutex as it can be triggered from
two different irq lines accessing the same state.

This allows using GPIO expanders behind I2C or SPI bus.

Signed-off-by: Timo Teräs 
Signed-off-by: Dmitry Torokhov

Input: rotary_encoder - convert to devm-* api

2016-01-18T17:17:27+00:00

Use managed resource API for simplifying error paths.

Signed-off-by: Timo Teräs 
Signed-off-by: Dmitry Torokhov

Input: rotary-encoder - add support for quarter-period mode

2015-10-16T22:32:18+00:00

Some encoders have both outputs low in stable states, others also have
a stable state with both outputs high (half-period mode) and some have
a stable state in all steps (quarter-period mode). The driver used to
support the former states and with this change it can also support the
later.

This commit also deprecates the 'half-period' property and introduces
a new property 'steps-per-period'. This property specifies the
number of steps (stable states) produced by the rotary encoder
for each GPIO period.

Signed-off-by: Guido Martínez 
Signed-off-by: Ezequiel Garcia 
Acked-by: Rob Herring 
Signed-off-by: Dmitry Torokhov