Input: omap-keypad - clear interrupts on open
According to TRM, the recommended way for keyboard controller initialization is clear the interrupt-status register, then set up certain keyboard events for generating an interrupt request and set up expected source of wake-up event that generates a wake-up request. Signed-off-by: Illia Smyrnov <illia.smyrnov@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -185,8 +185,9 @@ static int omap4_keypad_open(struct input_dev *input)
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(OMAP4_VAL_PVT << OMAP4_DEF_CTRL_PTV_SHIFT));
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kbd_writel(keypad_data, OMAP4_KBD_DEBOUNCINGTIME,
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OMAP4_VAL_DEBOUNCINGTIME);
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/* clear pending interrupts */
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kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
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OMAP4_VAL_IRQDISABLE);
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kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
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kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
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OMAP4_DEF_IRQENABLE_EVENTEN |
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OMAP4_DEF_IRQENABLE_LONGKEY);
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