Hi Marek, On Fri, May 17, 2013 at 01:25:11AM +0200, Marek Vasut wrote: > Dear Samuel Ortiz, > > > Hi Marek, > > > > On Mon, Apr 22, 2013 at 01:06:05AM +0200, Marek Vasut wrote: > > > The touchscreen interrupt handling in the STMPE touchscreen driver > > > doesn't seem to work correctly. It relies on FIFO_TH to be asserted > > > instead of TOUCH_DET interrupt for touchscreen detection. > > > > > > The FIFO_TH is usually asserted but is asserted independently of the > > > touchscreen controller operation. Because the bits in the interrupt > > > status register are not entirely cleaned, the interrupt handler is > > > triggered even if FIFO_TH is not yet set. Make sure that all bits in > > > the interrupt status register are cleared early. > > > > > > Rework the touchscreen interrupt handling so it waits for TOUCH_DET > > > interrupt to happen. Upon first TOUCH_DET interrupt, worker thread > > > is started which polls the touchscreen controller for location data > > > until no touch is detected. Touch is determined by checking the X > > > and Y coordinates, if they are zero, no touch happens. > > > > > > Signed-off-by: Marek Vasut <[email protected]> > > > Cc: Dmitry Torokhov <[email protected]> > > > Cc: Samuel Ortiz <[email protected]> > > > Cc: Vipul Kumar Samar <[email protected]> > > > Cc: Viresh Kumar <[email protected]> > > > Cc: Bill Pemberton <[email protected]> > > > Cc: Mark Brown <[email protected]> > > > --- > > > > > > drivers/input/touchscreen/stmpe-ts.c | 111 > > > ++++++++++++++-------------------- drivers/mfd/stmpe.c > > > | 10 +-- > > > 2 files changed, 50 insertions(+), 71 deletions(-) > > > > Could you please split this patch in 2, the MFD part is independent from > > the input one and could be applied separately. > > I'd vote for applying this as one single patch, since this fixes one single > problem (touchscreen not working properly). Or is that a big issue for you? I am fine as long as we get feedback from Dmitry and the ST folks about it.
Cheers, Samuel. -- Intel Open Source Technology Centre http://oss.intel.com/ -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
