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Subject[PATCH v3 3/3] Input: omap-keypad: Clear interrupts on open
Date
Clear interrupts when open keypad.

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>
---
drivers/input/keyboard/omap4-keypad.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c
index b876a0d..0244262 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);
--
1.7.0.4


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