From ac2e6e01f155811d0e206298f0d7cadcc9234603 Mon Sep 17 00:00:00 2001
From: Takeshi ISHII <2170248+mtei@users.noreply.github.com>
Date: Tue, 13 Jul 2021 16:50:25 +0900
Subject: [PATCH] Change the prototype of matrix_output_unselect_delay()
(#13045)
The prototype of matrix_output_unselect_delay() has been changed as follows.
```c
void matrix_output_unselect_delay(uint8_t line, bool key_pressed);
```
Currently, no keyboard seems to be redefining `matrix_output_unselect_delay()`, so there is no change in the system behavior.
With this change, the keyboard level code can get some optimization hints, for example, the following.
```c
void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {
/* If none of the keys are pressed,
* there is no need to wait for time for the next line. */
if (key_pressed) {
#ifdef MATRIX_IO_DELAY
# if MATRIX_IO_DELAY > 0
wait_us(MATRIX_IO_DELAY);
# endif
#else
wait_us(30);
#endif
}
}
```
---
quantum/matrix.c | 7 +++++--
quantum/matrix.h | 2 +-
quantum/matrix_common.c | 2 +-
3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/quantum/matrix.c b/quantum/matrix.c
index 235b16769f..d22817bf48 100644
--- a/quantum/matrix.c
+++ b/quantum/matrix.c
@@ -182,7 +182,7 @@ __attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[]
// Unselect row
unselect_row(current_row);
- matrix_output_unselect_delay(); // wait for all Col signals to go HIGH
+ matrix_output_unselect_delay(current_row, current_row_value != 0); // wait for all Col signals to go HIGH
// Update the matrix
current_matrix[current_row] = current_row_value;
@@ -222,6 +222,8 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
+ bool key_pressed = false;
+
// Select col
if (!select_col(current_col)) { // select col
return; // skip NO_PIN col
@@ -234,6 +236,7 @@ __attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[]
if (readMatrixPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
+ key_pressed = true;
} else {
// Pin HI, clear col bit
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
@@ -242,7 +245,7 @@ __attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[]
// Unselect col
unselect_col(current_col);
- matrix_output_unselect_delay(); // wait for all Row signals to go HIGH
+ matrix_output_unselect_delay(current_col, key_pressed); // wait for all Row signals to go HIGH
}
# else
diff --git a/quantum/matrix.h b/quantum/matrix.h
index 3fe691aaee..5c696622fc 100644
--- a/quantum/matrix.h
+++ b/quantum/matrix.h
@@ -56,7 +56,7 @@ matrix_row_t matrix_get_row(uint8_t row);
void matrix_print(void);
/* delay between changing matrix pin state and reading values */
void matrix_output_select_delay(void);
-void matrix_output_unselect_delay(void);
+void matrix_output_unselect_delay(uint8_t line, bool key_pressed);
/* only for backwards compatibility. delay between changing matrix pin state and reading values */
void matrix_io_delay(void);
diff --git a/quantum/matrix_common.c b/quantum/matrix_common.c
index efbad6a5fd..66c89970b1 100644
--- a/quantum/matrix_common.c
+++ b/quantum/matrix_common.c
@@ -88,7 +88,7 @@ uint8_t matrix_key_count(void) {
__attribute__((weak)) void matrix_io_delay(void) { wait_us(MATRIX_IO_DELAY); }
__attribute__((weak)) void matrix_output_select_delay(void) { waitInputPinDelay(); }
-__attribute__((weak)) void matrix_output_unselect_delay(void) { matrix_io_delay(); }
+__attribute__((weak)) void matrix_output_unselect_delay(uint8_t line, bool key_pressed) { matrix_io_delay(); }
// CUSTOM MATRIX 'LITE'
__attribute__((weak)) void matrix_init_custom(void) {}