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Input: pxa27x_keypad direct key may be low active

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KPDK_DK only indicates the pin level of direct key.
So it is related to board, and low level may be active which
indicates that a key is pressed.

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
This commit is contained in:
Chao Xie
2012-04-01 10:08:03 +08:00
committed by Haojian Zhuang
parent 5545fa897a
commit ee1d8040a6
2 changed files with 11 additions and 1 deletions
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10
drivers/input/keyboard/pxa27x_keypad.c
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@@ -311,7 +311,15 @@ static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad)
if (pdata->enable_rotary0 || pdata->enable_rotary1)
pxa27x_keypad_scan_rotary(keypad);
new_state = KPDK_DK(kpdk) & keypad->direct_key_mask;
/*
* The KPDR_DK only output the key pin level, so it relates to board,
* and low level may be active.
*/
if (pdata->direct_key_low_active)
new_state = ~KPDK_DK(kpdk) & keypad->direct_key_mask;
else
new_state = KPDK_DK(kpdk) & keypad->direct_key_mask;
bits_changed = keypad->direct_key_state ^ new_state;
if (bits_changed == 0)