diff options
Diffstat (limited to 'chip/lm4/keyboard_raw.c')
| -rw-r--r-- | chip/lm4/keyboard_raw.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/chip/lm4/keyboard_raw.c b/chip/lm4/keyboard_raw.c index 2104bd08a9..2a158769a4 100644 --- a/chip/lm4/keyboard_raw.c +++ b/chip/lm4/keyboard_raw.c @@ -53,23 +53,22 @@ void keyboard_raw_task_start(void) test_mockable void keyboard_raw_drive_column(int col) { - if (col == KEYBOARD_COLUMN_NONE) { - /* Tri-state all outputs */ - LM4_GPIO_DATA(LM4_GPIO_P, 0xff) = 0xff; - LM4_GPIO_DATA(LM4_GPIO_Q, 0x1f) = 0x1f; - } else if (col == KEYBOARD_COLUMN_ALL) { - /* Assert all outputs */ - LM4_GPIO_DATA(LM4_GPIO_P, 0xff) = 0; - LM4_GPIO_DATA(LM4_GPIO_Q, 0x1f) = 0; - } else { - /* Assert a single output */ - LM4_GPIO_DATA(LM4_GPIO_P, 0xff) = 0xff; - LM4_GPIO_DATA(LM4_GPIO_Q, 0x1f) = 0x1f; - if (col < 8) - LM4_GPIO_DATA(LM4_GPIO_P, 1 << col) = 0; - else - LM4_GPIO_DATA(LM4_GPIO_Q, 1 << (col - 8)) = 0; - } + int mask; + + if (col == KEYBOARD_COLUMN_NONE) + mask = 0x1fff; /* Tri-state all outputs */ + else if (col == KEYBOARD_COLUMN_ALL) + mask = 0; /* Assert all outputs */ + else + mask = 0x1fff ^ (1 << col); /* Assert a single output */ + +#ifdef CONFIG_KEYBOARD_COL2_INVERTED + /* Invert column 2 output */ + mask ^= (1 << 2); +#endif + + LM4_GPIO_DATA(LM4_GPIO_P, 0xff) = mask & 0xff; + LM4_GPIO_DATA(LM4_GPIO_Q, 0x1f) = (mask >> 8) & 0x1f; } test_mockable int keyboard_raw_read_rows(void) |