Lines Matching full:keypad
56 static void __activate_col(struct matrix_keypad *keypad, int col, bool on)
59 gpiod_direction_output(keypad->col_gpios[col], 1);
61 gpiod_set_value_cansleep(keypad->col_gpios[col], 0);
62 if (!keypad->drive_inactive_cols)
63 gpiod_direction_input(keypad->col_gpios[col]);
67 static void activate_col(struct matrix_keypad *keypad, int col, bool on)
69 __activate_col(keypad, col, on);
71 if (on && keypad->col_scan_delay_us)
72 fsleep(keypad->col_scan_delay_us);
75 static void activate_all_cols(struct matrix_keypad *keypad, bool on)
79 for (col = 0; col < keypad->num_col_gpios; col++)
80 __activate_col(keypad, col, on);
82 if (on && keypad->all_cols_on_delay_us)
83 fsleep(keypad->all_cols_on_delay_us);
86 static bool row_asserted(struct matrix_keypad *keypad, int row)
88 return gpiod_get_value_cansleep(keypad->row_gpios[row]);
91 static void enable_row_irqs(struct matrix_keypad *keypad)
95 for (i = 0; i < keypad->num_row_gpios; i++)
96 enable_irq(keypad->row_irqs[i]);
99 static void disable_row_irqs(struct matrix_keypad *keypad)
103 for (i = 0; i < keypad->num_row_gpios; i++)
104 disable_irq_nosync(keypad->row_irqs[i]);
112 struct matrix_keypad *keypad =
114 struct input_dev *input_dev = keypad->input_dev;
120 activate_all_cols(keypad, false);
124 for (row = 0; row < keypad->num_row_gpios; row++)
125 gpiod_direction_input(keypad->row_gpios[row]);
128 for (col = 0; col < keypad->num_col_gpios; col++) {
130 activate_col(keypad, col, true);
132 for (row = 0; row < keypad->num_row_gpios; row++)
134 row_asserted(keypad, row) ? BIT(row) : 0;
136 activate_col(keypad, col, false);
139 for (col = 0; col < keypad->num_col_gpios; col++) {
142 bits_changed = keypad->last_key_state[col] ^ new_state[col];
146 for (row = 0; row < keypad->num_row_gpios; row++) {
150 code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);
159 memcpy(keypad->last_key_state, new_state, sizeof(new_state));
161 activate_all_cols(keypad, true);
164 scoped_guard(spinlock_irq, &keypad->lock) {
165 keypad->scan_pending = false;
166 enable_row_irqs(keypad);
172 struct matrix_keypad *keypad = id;
174 guard(spinlock_irqsave)(&keypad->lock);
181 if (unlikely(keypad->scan_pending || keypad->stopped))
184 disable_row_irqs(keypad);
185 keypad->scan_pending = true;
186 schedule_delayed_work(&keypad->work,
187 msecs_to_jiffies(keypad->debounce_ms));
195 struct matrix_keypad *keypad = input_get_drvdata(dev);
197 keypad->stopped = false;
204 schedule_delayed_work(&keypad->work, 0);
211 struct matrix_keypad *keypad = input_get_drvdata(dev);
213 scoped_guard(spinlock_irq, &keypad->lock) {
214 keypad->stopped = true;
217 flush_delayed_work(&keypad->work);
222 disable_row_irqs(keypad);
225 static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
229 for_each_clear_bit(i, keypad->wakeup_enabled_irqs,
230 keypad->num_row_gpios)
231 if (enable_irq_wake(keypad->row_irqs[i]) == 0)
232 __set_bit(i, keypad->wakeup_enabled_irqs);
235 static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)
239 for_each_set_bit(i, keypad->wakeup_enabled_irqs,
240 keypad->num_row_gpios) {
241 disable_irq_wake(keypad->row_irqs[i]);
242 __clear_bit(i, keypad->wakeup_enabled_irqs);
249 struct matrix_keypad *keypad = platform_get_drvdata(pdev);
251 matrix_keypad_stop(keypad->input_dev);
254 matrix_keypad_enable_wakeup(keypad);
262 struct matrix_keypad *keypad = platform_get_drvdata(pdev);
265 matrix_keypad_disable_wakeup(keypad);
267 matrix_keypad_start(keypad->input_dev);
276 struct matrix_keypad *keypad)
290 keypad->num_row_gpios = nrow;
291 keypad->num_col_gpios = ncol;
296 for (i = 0; i < keypad->num_col_gpios; i++) {
297 keypad->col_gpios[i] = devm_gpiod_get_index(&pdev->dev, "col",
299 err = PTR_ERR_OR_ZERO(keypad->col_gpios[i]);
307 gpiod_set_consumer_name(keypad->col_gpios[i], "matrix_kbd_col");
309 if (active_low ^ gpiod_is_active_low(keypad->col_gpios[i]))
310 gpiod_toggle_active_low(keypad->col_gpios[i]);
312 gpiod_direction_output(keypad->col_gpios[i], 1);
315 for (i = 0; i < keypad->num_row_gpios; i++) {
316 keypad->row_gpios[i] = devm_gpiod_get_index(&pdev->dev, "row",
318 err = PTR_ERR_OR_ZERO(keypad->row_gpios[i]);
326 gpiod_set_consumer_name(keypad->row_gpios[i], "matrix_kbd_row");
328 if (active_low ^ gpiod_is_active_low(keypad->row_gpios[i]))
329 gpiod_toggle_active_low(keypad->row_gpios[i]);
336 struct matrix_keypad *keypad)
342 for (i = 0; i < keypad->num_row_gpios; i++) {
343 irq = gpiod_to_irq(keypad->row_gpios[i]);
356 "matrix-keypad", keypad);
364 keypad->row_irqs[i] = irq;
368 disable_row_irqs(keypad);
375 struct matrix_keypad *keypad;
380 keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL);
381 if (!keypad)
388 keypad->input_dev = input_dev;
389 keypad->stopped = true;
390 INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);
391 spin_lock_init(&keypad->lock);
393 keypad->drive_inactive_cols =
396 &keypad->debounce_ms);
398 &keypad->col_scan_delay_us);
400 &keypad->all_cols_on_delay_us);
402 err = matrix_keypad_init_gpio(pdev, keypad);
406 keypad->row_shift = get_count_order(keypad->num_col_gpios);
408 err = matrix_keypad_setup_interrupts(pdev, keypad);
418 keypad->num_row_gpios,
419 keypad->num_col_gpios,
430 input_set_drvdata(input_dev, keypad);
432 err = input_register_device(keypad->input_dev);
441 platform_set_drvdata(pdev, keypad);
448 { .compatible = "gpio-matrix-keypad" },
457 .name = "matrix-keypad",
465 MODULE_DESCRIPTION("GPIO Driven Matrix Keypad Driver");
467 MODULE_ALIAS("platform:matrix-keypad");