On 2016-04-07 23:52, Tom Rini wrote: > This reverts commit 885f3fb9fa1f9e185e8a4e905157087495734349 due to this > change breaking the touchpad on the Chromebook Pixel 2015 on resume from > sleep or warm resets. > > Cc: Olof Johansson <olof@xxxxxxxxx> > Cc: Nick Dyer <nick.dyer@xxxxxxxxxxx> > Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > Cc: Henrik Rydberg <rydberg@xxxxxxxxxxx> > Signed-off-by: Tom Rini <trini@xxxxxxxxxxxx> Hi Tom- Sorry that this has caused a problem. I suggest we try and find a 3rd option other than reverting this patch, because otherwise we will cause problems on other platforms. I have a Pixel 2 here - can you advise how to reproduce? > --- > drivers/input/touchscreen/atmel_mxt_ts.c | 9 +-------- > 1 file changed, 1 insertion(+), 8 deletions(-) > > diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c > index 2160512..9b92b60 100644 > --- a/drivers/input/touchscreen/atmel_mxt_ts.c > +++ b/drivers/input/touchscreen/atmel_mxt_ts.c > @@ -1098,9 +1098,7 @@ static int mxt_soft_reset(struct mxt_data *data) > struct device *dev = &data->client->dev; > int ret = 0; > > - dev_info(dev, "Resetting device\n"); > - > - disable_irq(data->irq); > + dev_info(dev, "Resetting chip\n"); > > reinit_completion(&data->reset_completion); > > @@ -1108,11 +1106,6 @@ static int mxt_soft_reset(struct mxt_data *data) > if (ret) > return ret; > > - /* Ignore CHG line for 100ms after reset */ > - msleep(100); > - > - enable_irq(data->irq); I suspect what is going on here is that Pixel 2 is using edge triggering and we are missing the edge during the 100ms delay. Could you try just changing this from "enable_irq" to mxt_acquire_irq(data); > - > ret = mxt_wait_for_completion(data, &data->reset_completion, > MXT_RESET_TIMEOUT); > if (ret) > -- 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
