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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>
This commit is contained in:
Illia Smyrnov 2013-08-25 23:26:16 -07:00 committed by Dmitry Torokhov
parent c683da3ec9
commit afbac60b0c
1 changed files with 2 additions and 1 deletions
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3
drivers/input/keyboard/omap4-keypad.c
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@ -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);