On Sat, Dec 28, 2019 at 12:04:47AM +0100, Hans de Goede wrote: > Suspending Goodix touchscreens requires changing the interrupt pin to > output before sending them a power-down command. Followed by wiggling > the interrupt pin to wake the device up, after which it is put back > in input mode. > > On Bay Trail devices with a Goodix touchscreen direct-irq mode is used > in combination with listing the pin as a normal GpioIo resource. > > This works fine, until the goodix driver gets rmmod-ed and then insmod-ed > again. In this case byt_gpio_disable_free() calls > byt_gpio_clear_triggering() which clears the IRQ flags and after that the > (direct) IRQ no longer triggers. > > This commit fixes this by adding a check for the BYT_DIRECT_IRQ_EN flag > to byt_gpio_clear_triggering(). > > Note that byt_gpio_clear_triggering() only gets called from > byt_gpio_disable_free() for direct-irq enabled pins, as these are excluded > from the irq_valid mask by byt_init_irq_valid_mask(). > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Acked-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
