Dear Jonathan Cameron, > On 01/13/2013 03:09 AM, Dmitry Torokhov wrote: > > On Sat, Jan 12, 2013 at 12:35:07AM +0100, Marek Vasut wrote: > >> This patch implements support for sampling of a touchscreen into > >> the MXS LRADC driver. The LRADC block allows configuring some of > >> it's channels into special mode where they either output the drive > >> voltage or sample it, allowing it to operate a 4-wire or 5-wire > >> resistive touchscreen. > >> > >> In case the touchscreen mode is enabled, the LRADC slot #7 is > >> reserved for touchscreen only, therefore it is not possible to > >> sample 8 LRADC channels at time, but only 7 channels. > >> > >> The touchscreen controller is configured such that the PENDOWN event > >> disables touchscreen interrupts and triggers execution of worker > >> thread, which then polls the touchscreen controller for X, Y and > >> Pressure values. This reduces the overhead of interrupt-driven > >> operation. Upon the PENUP event, the worker thread re-enables the > >> PENDOWN detection interrupt and exits. > >> > >> Signed-off-by: Marek Vasut <marex@xxxxxxx> > >> Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > > > > Acked-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > > I've added this to the togreg branch of > git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git > > Note it did not directly apply as I'm guessing you have a slightly > out of date tree. Ah yes, it was still based off of stable 3.7 . > Please could you check I didn't mess up the > fixing up of the patch. There was a fair bit of fuzz and the devinit > devexit stuff shouldn't have been in your patch in the first place. Checked just now, looks OK to me, thanks! > Shawn, do you want to take the board device tree patch or shall > I take that one as well? > > Jonathan -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
