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path: root/drivers/input/touchscreen/mc13783_ts.c
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2016-08-25Input: mc13783_ts - remove deprecated create_singletheread_workqueueBhaktipriya Shridhar
The workqueue "workqueue" has a single workitem(&priv->work) and hence doesn't require ordering. Also, it is not being used on a memory reclaim path. Hence, the singlethreaded workqueue has been replaced with the use of system_wq. System workqueues have been able to handle high level of concurrency for a long time now and hence it's not required to have a singlethreaded workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue created with create_singlethread_workqueue(), system_wq allows multiple work items to overlap executions even on the same CPU; however, a per-cpu workqueue doesn't have any CPU locality or global ordering guarantee unless the target CPU is explicitly specified and thus the increase of local concurrency shouldn't make any difference. Workitem is sync cancelled in mc13783_ts_remove() to ensure that there are no workitems pending when the driver is disconnected. Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-10-20input: touchscreen: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-05-05Input: mc13783_ts - remove redundant platform_set_drvdata()Sachin Kamat
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no driver is bound) removes the need to set driver data field to NULL. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-03-17Input: mc13783_ts - use module_platform_driver_probe()Fabio Porcedda
This patch converts the drivers to use the module_platform_driver_probe() macro which makes the code smaller and a bit simpler. Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-11-24Input: remove use of __devexitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-11-24Input: remove use of __devexit_pBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-03-06mfd: Add pdata to set mc13783-ts conversion delayMichael Thalmeier
MC13783 can be programmed to wait some clock cycles between the touchscreen polarization and the resistance conversion. This is needed to adjust for touchscreens with high capacitance between plates. Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-01-10Input: revert some over-zealous conversions to module_platform_driver()Dmitry Torokhov
Recent conversion to module_platform_driver() went a bit too far and converted not only drivers that used platform_driver_register() but also ones using platform_driver_probe(), breaking them in process. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-11-30Input: touchscreen - use macro module_platform_driver()JJ Ding
Commit 940ab88962bc1aff3273a8356d64577a6e386736 introduced a new macro to save some platform_driver boilerplate code. Use it. Signed-off-by: JJ Ding <dgdunix@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-10-24input: Convert mc13783-ts to mc13xxx APIUwe Kleine-König
This is the first step to also support the touch interface of the mc13892 pmic chip. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-06input/mc13783-ts: don't use deprecated mc13783 API callsUwe Kleine-König
mc13783_ackirq is deprecated, use the drop in replacement mc13783_irq_ack. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Valentin Longchamp <valentin.longchamp@epfl.ch> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Luotao Fu <l.fu@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15Input: add mc13783 touchscreen driverSascha Hauer
This driver provides support for the touchscreen interface integrated into the Freescale MC13783. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Luotao Fu <l.fu@pengutronix.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>