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| author | Dave Airlie <airlied@redhat.com> | 2010-08-02 04:05:18 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-08-02 04:05:24 +0400 |
| commit | d656ae53f64cb0f01dac8a02c4d31453d64ef97c (patch) | |
| tree | cf641d4e5828b8f7c430b42657237c5daf9571fd /drivers/input/keyboard/twl4030_keypad.c | |
| parent | 167ffc44caaee68ea60dadf6931a4d195a4ed1f0 (diff) | |
| parent | b37fa16e78d6f9790462b3181602a26b5af36260 (diff) | |
| download | linux-d656ae53f64cb0f01dac8a02c4d31453d64ef97c.tar.xz | |
Merge tag 'v2.6.35-rc6' into drm-radeon-next
Need this to avoid conflicts with future radeon fixes
Diffstat (limited to 'drivers/input/keyboard/twl4030_keypad.c')
| -rw-r--r-- | drivers/input/keyboard/twl4030_keypad.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index 7aa59e07b689..fb16b5e5ea13 100644 --- a/drivers/input/keyboard/twl4030_keypad.c +++ b/drivers/input/keyboard/twl4030_keypad.c @@ -51,8 +51,12 @@ */ #define TWL4030_MAX_ROWS 8 /* TWL4030 hard limit */ #define TWL4030_MAX_COLS 8 -#define TWL4030_ROW_SHIFT 3 -#define TWL4030_KEYMAP_SIZE (TWL4030_MAX_ROWS * TWL4030_MAX_COLS) +/* + * Note that we add space for an extra column so that we can handle + * row lines connected to the gnd (see twl4030_col_xlate()). + */ +#define TWL4030_ROW_SHIFT 4 +#define TWL4030_KEYMAP_SIZE (TWL4030_MAX_ROWS << TWL4030_ROW_SHIFT) struct twl4030_keypad { unsigned short keymap[TWL4030_KEYMAP_SIZE]; @@ -182,7 +186,7 @@ static int twl4030_read_kp_matrix_state(struct twl4030_keypad *kp, u16 *state) return ret; } -static int twl4030_is_in_ghost_state(struct twl4030_keypad *kp, u16 *key_state) +static bool twl4030_is_in_ghost_state(struct twl4030_keypad *kp, u16 *key_state) { int i; u16 check = 0; @@ -191,12 +195,12 @@ static int twl4030_is_in_ghost_state(struct twl4030_keypad *kp, u16 *key_state) u16 col = key_state[i]; if ((col & check) && hweight16(col) > 1) - return 1; + return true; check |= col; } - return 0; + return false; } static void twl4030_kp_scan(struct twl4030_keypad *kp, bool release_all) @@ -225,7 +229,8 @@ static void twl4030_kp_scan(struct twl4030_keypad *kp, bool release_all) if (!changed) continue; - for (col = 0; col < kp->n_cols; col++) { + /* Extra column handles "all gnd" rows */ + for (col = 0; col < kp->n_cols + 1; col++) { int code; if (!(changed & (1 << col))) |