diff options
Diffstat (limited to 'drivers/input/keyboard/nomadik-ske-keypad.c')
| -rw-r--r-- | drivers/input/keyboard/nomadik-ske-keypad.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/input/keyboard/nomadik-ske-keypad.c b/drivers/input/keyboard/nomadik-ske-keypad.c index 6857454bb13..a880e741420 100644 --- a/drivers/input/keyboard/nomadik-ske-keypad.c +++ b/drivers/input/keyboard/nomadik-ske-keypad.c @@ -49,6 +49,7 @@ #define SKE_ASR3 0x2C #define SKE_NUM_ASRX_REGISTERS (4) +#define KEY_PRESSED_DELAY 10 /** * struct ske_keypad - data structure used by keypad driver @@ -92,7 +93,7 @@ static void ske_keypad_set_bits(struct ske_keypad *keypad, u16 addr, static int __init ske_keypad_chip_init(struct ske_keypad *keypad) { u32 value; - int timeout = 50; + int timeout = keypad->board->debounce_ms; /* check SKE_RIS to be 0 */ while ((readl(keypad->reg_base + SKE_RIS) != 0x00000000) && timeout--) @@ -196,18 +197,22 @@ static void ske_keypad_read_data(struct ske_keypad *keypad) static irqreturn_t ske_keypad_irq(int irq, void *dev_id) { struct ske_keypad *keypad = dev_id; - int retries = 20; + int timeout = keypad->board->debounce_ms; /* disable auto scan interrupt; mask the interrupt generated */ ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0); ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA); - while ((readl(keypad->reg_base + SKE_CR) & SKE_KPASON) && --retries) + while ((readl(keypad->reg_base + SKE_CR) & SKE_KPASON) && --timeout) cpu_relax(); /* SKEx registers are stable and can be read */ ske_keypad_read_data(keypad); + /* wait until raw interrupt is clear */ + while ((readl(keypad->reg_base + SKE_RIS)) && --timeout) + msleep(KEY_PRESSED_DELAY); + /* enable auto scan interrupts */ ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA); |