linux-toradex.git/drivers/input/touchscreen/ad7879.c, branch v3.3.3

Merge commit 'v3.2-rc3' into next

2011-11-29T09:51:07+00:00

Input: ad7879 - consolidate PM methods

2011-11-16T06:24:22+00:00

The PM methods are basically the same for SPI and I2C busses, so let's
use the same dev_pm_ops for both of them.

Acked-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov

Input: convert obsolete strict_strtox to kstrtox

2011-11-10T05:23:26+00:00

With commit 67d0a0754455f89ef3946946159d8ec9e45ce33a we mark strict_strtox
as obsolete. Convert all remaining such uses in drivers/input/.

Also change long to appropriate types, and return error conditions
from kstrtox separately, as Dmitry sugguests.

Signed-off-by: JJ Ding 
Signed-off-by: Dmitry Torokhov

drivers/input: Add module.h to modular drivers implicitly using it

2011-10-31T23:31:16+00:00

A pending cleanup will mean that module.h won't be implicitly
everywhere anymore.  Make sure the modular drivers in input dir
are actually calling out for  explicitly in advance.

Signed-off-by: Paul Gortmaker

Input: ad7879 - fix deficient device disable

2011-08-03T05:17:44+00:00

Input close or device disable should not interact with the exported
gpiolib functionality. However that's the case. __ad7879_disable()
clears the entire AD7879_REG_CTRL2, while it should just power down
the ADC and its reference.

Signed-off-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov

Input: ad7879 - prevent invalid finger data reports

2010-10-29T05:32:50+00:00

Considering following scenario - the touch is present on the screen
at the beginning of the last conversion sequence, but by the time
the last sequence is finished, the finger is lift off. The AD7879 data
available interrupt signals (DAV) completion, however some X,Y values
are not valid because the screen inputs were floating during the
acquisition.

The AD7877 acts differently here, since it only asserts DAV if the
touch is still present when the conversion sequence finished.

Based on the fact that this can only happen in the last sample of the
repeated conversion sequence, we simply skip the last (short glitches
are filtered by the AD7879 internal median and average filters).
This doesn't cause noticeable side effects, since the minimum conversion
interval is 9.44ms. We receive ~100 waypoint samples per second, so we
simply delay the result by 9.44ms.

We also reject samples where pressure is greater than pressure_max.

Signed-off-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov

Input: ad7879 - report EV_KEY/BTN_TOUCH events

2010-07-03T20:13:20+00:00

Some input events users such as Android require BTN_TOUCH events.
Implement EV_KEY/BTN_TOUCH and make sure that the release event
is not erroneous scheduled without a preceding valid touch.
Avoid duplicated BTN_TOUCH events, even though input core filters
them.

Signed-off-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov

Input: ad7879 - add open and close methods

2010-07-03T20:13:14+00:00

Tested-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov

Input: ad7879 - split bus logic out

2010-07-03T20:13:03+00:00

The ad7879 driver is using the old bus method of only supporting one
at a time (I2C or SPI). So refactor it like the other input drivers
that support multiple busses simultaneously.

Signed-off-by: Mike Frysinger 
Signed-off-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov

Input: ad7879 - use threaded IRQ

2010-06-30T22:08:09+00:00

Tested-by: Michael Hennerich 
Signed-off-by: Dmitry Torokhov