This patch converts the drivers in drivers/input/* to use the
module_i2c_driver() macro which makes the code smaller and a bit
simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Axel Linauthored and Dmitry Torokhovcommited 2012-03-16 23:06:19 -07:00
Abort driver initialization if X plate resistance was not specified in
platform data as it will cause pressure to be always calculated as 0,
and making userspace ignore touch coordinates.
Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Philip Rakityauthored and Dmitry Torokhovcommited 2011-10-11 20:56:41 -07:00
This will ensure that the device delivers input events only when there
are users.
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Instead of using hard IRQ and workqueue solution switch to using threaded
interrupt handler to simplify the code and locking rules.
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
These new platform-specific values can be used to set the fuzz parameter
passed to the input_set_abs_params() function for the ABS_X, ABS_Y and
ABS_PRESSURE axes.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Thierry Redingauthored and Dmitry Torokhovcommited 2011-05-17 09:38:53 -07:00
This new parameter allows the polling frequency to be configured while
keeping the default of once every millisecond.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Thierry Redingauthored and Dmitry Torokhovcommited 2011-05-17 09:38:49 -07:00
Depending on the quality of the touch panel, the time for the X-, X+, Y-
and Y+ inputs to settle may vary. The poll_delay parameter can be used
to override the default of 1 millisecond.
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Thierry Redingauthored and Dmitry Torokhovcommited 2011-05-17 09:38:43 -07:00
Finger touch events or very quick stylus events on low-quality panels
can cause the tsc2007 to read bogus values. Looking at oscilloscope
snapshots, this seems to be caused by the touch event disappearing
during the measurements. These bogus values result in misclicks, where
the X and Y values deviate from the real position.
Most of these misclicks can be filtered out by setting a low enough
threshold for the maximum resistance (which is loosely the inverse of
the pressure) allowed to consider a set of values valid. Since this
behaviour is largely dependent on the type and quality of the panel,
this commit introduces the max_rt parameter. The default value is kept
at MAX_12BIT.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Thierry Redingauthored and Dmitry Torokhovcommited 2011-05-17 09:38:39 -07:00
When the controller signals a pen-down event via the platform-specific
GPIO, while the sample values indicate an invalid measurement, the
measurement needs to be repeated.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Thierry Redingauthored and Dmitry Torokhovcommited 2011-05-17 09:38:34 -07:00
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
e4a7b9b04d 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>
Wolfram Sangauthored and Jean Delvarecommited 2010-06-03 11:33:58 +02:00
Do not leave dangling client data pointers when unbinding device from the
driver.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Wolfram Sangauthored and Dmitry Torokhovcommited 2010-04-13 23:26:40 -07:00
The id_table field of the struct i2c_driver is defined as constant
in <linux/i2c.h> so it makes sense to mark the initialization data also
constant.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Márton Némethauthored and Dmitry Torokhovcommited 2010-01-09 23:28:33 -08:00
Check the result when sending the power down command to the controller.
Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Richard Röjforsauthored and Dmitry Torokhovcommited 2009-08-04 22:35:49 -07:00
In cases when get_pendown_state callback is not available have
the driver to fallback on pressure calculation to determine if
the pen is up.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Don't read coordinates during probe of the driver, just power down
the controller and wait for interrupts.
Signed-off-by: Richard Röjfors<richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Richard Röjforsauthored and Dmitry Torokhovcommited 2009-07-26 11:21:03 -07:00
Make init_platform_hw and exit_platform_hw callbacks optional since
they are not needed on all platforms.
Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Richard Röjforsauthored and Dmitry Torokhovcommited 2009-07-26 11:21:00 -07:00
Properly shut off interrupts/delayed work by free-ing IRQ first
and then ensuring that enable/disable is balanced. Also add
__devinit/__devexit markings, restore poll delay/period scheduling
logic, make sure we call exit_platform_hw() method when probe
fails.
Tested-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Since it's not allowed to do synchronous I2C in the HR timer callback
context we have to switch to using the global workqueue. The work is
scheduled every 1ms when polling rather than 5 us.
Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Richard Röjforsauthored and Dmitry Torokhovcommited 2009-07-26 11:20:55 -07:00
The platform codes must provide get_pendown_state() for the driver
to work properly.
Signed-off-by: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Kwangwoo Leeauthored and Dmitry Torokhovcommited 2009-05-15 19:23:54 -07:00
Now that hrtimers are always running in hard irq context we can't
unconditionally enable interrupts at the end of the timer function.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Thierry Redingauthored and Dmitry Torokhovcommited 2009-05-11 15:35:48 -07:00
disable_irq() waits for all running handlers to complete before
returning. As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock. This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Ben Nizetteauthored and Dmitry Torokhovcommited 2009-04-17 20:42:00 -07:00
This drive has been tested on ARM9 based SoC - MV86XX.
Signed-off-by: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Kwangwoo Leeauthored and Dmitry Torokhovcommited 2008-12-20 05:00:43 -05:00
Axel Lin
authored and
Dmitry Torokhov
commited 
Philip Rakity
authored and
Thierry Reding
authored and
Wolfram Sang
authored and
Jean Delvare
commited 
Márton Németh
authored and
Richard Röjfors
authored and
Kwangwoo Lee
authored and
Ben Nizette
authored and
Kay Sievers
authored and