[PATCH v5 2/7] Input: matrix_keypad - add function for reading row state

Markus Burri
2025-01-10T05:50:11Z

Move the evaluation of a row state into separate function.
It will be also used by a change later in this series.

Signed-off-by: Markus Burri <markus.burri@mt.com>

---
drivers/input/keyboard/matrix_keypad.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 5571d2e..90148d3 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -100,6 +100,16 @@ static void disable_row_irqs(struct matrix_keypad *keypad)
disable_irq_nosync(keypad->row_irqs[i]);
}

+static uint32_t read_row_state(struct matrix_keypad *keypad)
+{
+ int row;
+ u32 row_state = 0;
+
+ for (row = 0; row < keypad->num_row_gpios; row++)
+ row_state |= row_asserted(keypad, row) ? BIT(row) : 0;
+ return row_state;
+}
+
/*
* This gets the keys from keyboard and reports it to input subsystem
*/
@@ -125,9 +135,7 @@ static void matrix_keypad_scan(struct work_struct *work)

activate_col(keypad, col, true);

- for (row = 0; row < keypad->num_row_gpios; row++)
- new_state[col] |=
- row_asserted(keypad, row) ? BIT(row) : 0;
+ new_state[col] = read_row_state(keypad);

activate_col(keypad, col, false);
}
--
2.39.5