From afbac60b0c535189a76855a04d85492cf2d992e1 Mon Sep 17 00:00:00 2001 From: Illia Smyrnov Date: Sun, 25 Aug 2013 23:26:16 -0700 Subject: 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 Reviewed-by: Felipe Balbi Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/omap4-keypad.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index b876a0d8c6be..0244262e2600 100644 --- a/drivers/input/keyboard/omap4-keypad.c +++ b/drivers/input/keyboard/omap4-keypad.c @@ -185,8 +185,9 @@ static int omap4_keypad_open(struct input_dev *input) (OMAP4_VAL_PVT << OMAP4_DEF_CTRL_PTV_SHIFT)); kbd_writel(keypad_data, OMAP4_KBD_DEBOUNCINGTIME, OMAP4_VAL_DEBOUNCINGTIME); + /* clear pending interrupts */ kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS, - OMAP4_VAL_IRQDISABLE); + kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)); kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE, OMAP4_DEF_IRQENABLE_EVENTEN | OMAP4_DEF_IRQENABLE_LONGKEY); -- cgit v1.2.1