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| author | Sebastian Reichel <sebastian.reichel@collabora.co.uk> | 2018-05-24 09:33:36 -0700 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-11-29 13:54:11 +0100 |
| commit | 029aecd56607c0eb960c7a7901431b77bd10b798 (patch) | |
| tree | 16147100e1f0b09ac3f54a696abdcf675b470764 /drivers/net/usb/asix.c | |
| parent | e9f9e559a6fd641634c488d1f811e2bc1b45587c (diff) | |
Input: atmel_mxt_ts - fix reset-gpio for level based irqs
The current reset-gpio support triggers an interrupt storm on platforms
using the maxtouch with level based interrupt. The Motorola Droid 4,
which I used for some of the tests is not affected, since it uses a edge
based interrupt.
This change avoids the interrupt storm by enabling the device while its
interrupt is disabled. Afterwards we wait 100ms. This is important for
two reasons: The device is unresponsive for some time (~22ms for
mxt224E) and the CHG (interrupt) line is not working properly for 100ms.
We don't need to wait for any following interrupts, since the following
mxt_initialize() checks for bootloader mode anyways.
This fixes a boot issue on GE PPD (watchdog kills device due to
interrupt storm) and does not cause regression on Motorola Droid 4.
Fixes: f657b00df22e ("Input: atmel_mxt_ts - add support for reset line")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
(cherry picked from commit ca1cd36cef00260db6b35b32d863e0c580c0488d)
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
(cherry picked from commit 40af4dba5fe9c14bd254fde06b1f64f8c0348974)
Diffstat (limited to 'drivers/net/usb/asix.c')
0 files changed, 0 insertions, 0 deletions