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| author | Illia Smyrnov <illia.smyrnov@ti.com> | 2013-08-26 10:26:16 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-08-26 11:15:53 +0400 |
| commit | afbac60b0c535189a76855a04d85492cf2d992e1 (patch) | |
| tree | 615b655355846c58299f0db39efe5740b875b955 | |
| parent | c683da3ec985bcf0e69890f372cffaba47a1a537 (diff) | |
| download | linux-afbac60b0c535189a76855a04d85492cf2d992e1.tar.xz | |
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>
| -rw-r--r-- | 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 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); |