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The touchscreen works in two modes, wait trigger mode and auto-semi mode. The device starts in wait trigger mode and waits until pressure is detected, then device sets WT_INT bit and raises an interrupt. The driver should put the device into auto-semi mode and prepare for reading first X and then Y coordinates. When coordinate data is ready the driver sets ADC_INT bit and raises interrupt again. [dtor@mail.ru: various cleanups] Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>