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  1. 09 5月, 2015 2 次提交
  3. 08 5月, 2015 2 次提交
    • M
      Input: smtpe-ts - wait 50mS until polling for pen-up · 9ceeb59c
      由 Marek Vasut 提交于 
      Wait a little bit longer, 50mS instead of 20mS, until the driver starts
polling for pen-up. The problematic behavior before this patch is applied
is as follows. The behavior was observed on the STMPE610QTR controller.

Upon a physical pen-down event, the touchscreen reports one set of x-y-p
coordinates and a pen-down event. After that, the pen-up polling is
triggered and since the controller is not ready yet, the polling mistakenly
detects a pen-up event while the physical state is still such that the pen
is down on the touch surface.

The pen-up handling flushes the controller FIFO, so after that, all the
samples in the controller are discarded. The controller becomes ready
shortly after this bogus pen-up handling and does generate again a pen-down
interrupt. This time, the controller contains x-y-p samples which all read
as zero. Since pressure value is zero, this set of samples is effectively
ignored by userland.

In the end, the driver just bounces between pen-down and bogus pen-up
handling, generating no useful results. Fix this by giving the controller a
bit more time before polling it for pen-up.
Signed-off-by: NMarek Vasut <marex@denx.de>
Reviewed-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      9ceeb59c
    • M
      Input: smtpe-ts - use msecs_to_jiffies() instead of HZ · 8f6bcc97
      由 Marek Vasut 提交于 
      Use msecs_to_jiffies(20) instead of plain (HZ / 50), as the former is much
more explicit about it's behavior. We want to schedule the task 20 mS from
now, so make it explicit in the code.
Signed-off-by: NMarek Vasut <marex@denx.de>
Reviewed-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      8f6bcc97
  5. 07 5月, 2015 5 次提交
  7. 21 4月, 2015 5 次提交
  9. 16 4月, 2015 2 次提交
  11. 15 4月, 2015 4 次提交
  13. 11 4月, 2015 2 次提交
  15. 07 4月, 2015 18 次提交