Daniel Drake 79d2c8bede
pinctrl/amd: save pin registers over suspend/resume ...
The touchpad in the Asus laptop models X505BA/BP and X542BA/BP is
unresponsive after suspend/resume. The following error appears during
resume:
i2c_hid i2c-ELAN1300:00: failed to reset device.
The problem here is that i2c_hid does not notice the interrupt being
generated at this point, because the GPIO is no longer configured
for interrupts.
Fix this by saving pinctrl-amd pin registers during suspend and
restoring them at resume time.
Based on code from pinctrl-intel.
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Drake <drake@endlessm.com >
Signed-off-by: Linus Walleij <linus.walleij@linaro.org >
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