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 <marex@xxxxxxx> > > Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > > Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx> > > Cc: Vipul Kumar Samar <vipulkumar.samar@xxxxxx> > > Cc: Viresh Kumar <viresh.kumar@xxxxxxxxxx> > > Cc: Bill Pemberton <wfp5p@xxxxxxxxxxxx> > > Cc: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > > --- > > > > 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? btw. can I get some review from the ST guys please ? Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
