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path: root/drivers/input/touchscreen/ad7879.c
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2012-07-07Merge branch 'for-linus' to bring in change ensuring that drivers thatDmitry Torokhov1-1/+1
use threaded IRQs use IRQF_ONESHOT.
2012-07-06Input: ad7879 - add option to correct xy axisMichael Hennerich1-0/+5
Sebastian Zenker reported that driver swaps x and y samples when the touchscreen leads are connected in accordance with the datasheet specification. Transposed axis can be typically corrected by touch screen calibration however this bug also negatively influences touch pressure measurements. Add an option to correct x and y axis. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Reported-and-tested-by: Sebastian Zenker <sebastian.zenker@gmx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-04Input: request threaded-only IRQs with IRQF_ONESHOTLars-Peter Clausen1-1/+1
Since commit 1c6c69525b ("genirq: Reject bogus threaded irq requests") threaded IRQs without a primary handler need to be requested with IRQF_ONESHOT, otherwise the request will fail. This patch adds the IRQF_ONESHOT to input drivers where it is missing. Not modified by this patch are those drivers where the requested IRQ will always be a nested IRQ (e.g. because it's part of an MFD), since for this special case IRQF_ONESHOT is not required to be specified when requesting the IRQ. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2011-11-29Merge commit 'v3.2-rc3' into nextDmitry Torokhov1-0/+1
2011-11-15Input: ad7879 - consolidate PM methodsDmitry Torokhov1-4/+15
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 <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-11-09Input: convert obsolete strict_strtox to kstrtoxJJ Ding1-2/+2
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 <dgdunix@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-10-31drivers/input: Add module.h to modular drivers implicitly using itPaul Gortmaker1-0/+1
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 <module.h> explicitly in advance. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-08-02Input: ad7879 - fix deficient device disableMichael Hennerich1-1/+3
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 <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-10-28Input: ad7879 - prevent invalid finger data reportsMichael Hennerich1-5/+27
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 <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-03Input: ad7879 - report EV_KEY/BTN_TOUCH eventsMichael Hennerich1-3/+13
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 <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-03Input: ad7879 - add open and close methodsDmitry Torokhov1-33/+80
Tested-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-03Input: ad7879 - split bus logic outMike Frysinger1-396/+104
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 <vapier@gentoo.org> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-06-30Input: ad7879 - use threaded IRQDmitry Torokhov1-27/+9
Tested-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-06-03i2c: Remove all i2c_set_clientdata(client, NULL) in driversWolfram Sang1-4/+1
I2C drivers can use the clientdata-pointer to point to private data. As I2C devices are not really unregistered, but merely detached from their driver, it used to be the drivers obligation to clear this pointer during remove() or a failed probe(). As a couple of drivers forgot to do this, it was agreed that it was cleaner if the i2c-core does this clearance when appropriate, as there is no guarantee for the lifetime of the clientdata-pointer after remove() anyhow. This feature was added to the core with commit e4a7b9b04de15f6b63da5ccdd373ffa3057a3681 to fix the faulty drivers. As there is no need anymore to clear the clientdata-pointer, remove all current occurrences in the drivers to simplify the code and prevent confusion. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Richard Purdie <rpurdie@linux.intel.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-01-19Input: ad7879 - support auxiliary GPIOs via gpiolibMichael Hennerich1-56/+141
Drop the simple fancy sysfs hooks for the aux GPIOs and expose these via the gpiolib interface so that other drivers can use them. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-10-09Merge branch 'for-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: i8042 - print debug data when testing AUX IRQ delivery Input: libps2 - fix dependancy on i8042 Input: fix rx51 board keymap Input: ad7879 - pass up error codes from probe functions Input: xpad - add BigBen Interactive XBOX 360 Controller Input: rotary_encoder - fix relative axis support Input: sparkspkr - move remove() functions to .devexit.text Input: wistron_btns - add DMI entry for Medion WIM2030 laptop
2009-10-05Input: ad7879 - pass up error codes from probe functionsMichael Hennerich1-2/+2
If the sub-probe functions fail, we need to pass up the error code to the higher levels from the probe function. We currently always return 0 even if there was an error so higher levels don't report problems. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-09-23Merge branch 'for-linus' of ↵Linus Torvalds1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: add driver for Atmel AT42QT2160 Sensor Chip Input: max7359 - use threaded IRQs Input: add driver for Maxim MAX7359 key switch controller Input: add driver for ADP5588 QWERTY I2C Keypad Input: add touchscreen driver for MELFAS MCS-5000 controller Input: add driver for OpenCores Keyboard Controller Input: dm355evm_keys - remove dm355evm_keys_hardirq Input: synaptics_i2c - switch to using __cancel_delayed_work() Input: ad7879 - add support for AD7889 Input: atkbd - rely on input core to restore state on resume Input: add generic suspend and resume for input devices Input: libps2 - additional locking for i8042 ports
2009-09-23spi: prefix modalias with "spi:"Anton Vorontsov1-0/+1
This makes it consistent with other buses (platform, i2c, vio, ...). I'm not sure why we use the prefixes, but there must be a reason. This was easy enough to do it, and I did it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: "John W. Linville" <linville@tuxdriver.com> Acked-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-17Input: ad7879 - add support for AD7889Michael Hennerich1-2/+4
The AD7889 is a new part but 100% software compatible with the AD7879, so add it to the id_table and help text. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-04-15Input: ad7877, ad7879 - remove depreciated IRQF_SAMPLE_RANDOM flagMichael Hennerich1-2/+1
This patch removes depreciated IRQF_SAMPLE_RANDOM flags from ad7877 and ad7879 touchscreen drivers. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-03-09Input: add AD7879 Touchscreen driverMichael Hennerich1-0/+782
[randy.dunlap@oracle.com: don't use bus_id] [dtor@mail.ru: locking and other fixups] Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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