85 static void enable_row_irqs(struct matrix_keypad *keypad)  in enable_row_irqs()  argument
87 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in enable_row_irqs()
98 static void disable_row_irqs(struct matrix_keypad *keypad)  in disable_row_irqs()  argument
100 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in disable_row_irqs()
116 	struct matrix_keypad *keypad =  in matrix_keypad_scan()  local
118 	struct input_dev *input_dev = keypad->input_dev;  in matrix_keypad_scan()
120 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_scan()
144 		bits_changed = keypad->last_key_state[col] ^ new_state[col];  in matrix_keypad_scan()
152 			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);  in matrix_keypad_scan()
161 	memcpy(keypad->last_key_state, new_state, sizeof(new_state));  in matrix_keypad_scan()
166 	spin_lock_irq(&keypad->lock);  in matrix_keypad_scan()
167 	keypad->scan_pending = false;  in matrix_keypad_scan()
168 	enable_row_irqs(keypad);  in matrix_keypad_scan()
169 	spin_unlock_irq(&keypad->lock);  in matrix_keypad_scan()
174 	struct matrix_keypad *keypad = id;  in matrix_keypad_interrupt()  local
177 	spin_lock_irqsave(&keypad->lock, flags);  in matrix_keypad_interrupt()
184 	if (unlikely(keypad->scan_pending || keypad->stopped))  in matrix_keypad_interrupt()
187 	disable_row_irqs(keypad);  in matrix_keypad_interrupt()
188 	keypad->scan_pending = true;  in matrix_keypad_interrupt()
189 	schedule_delayed_work(&keypad->work,  in matrix_keypad_interrupt()
190 		msecs_to_jiffies(keypad->pdata->debounce_ms));  in matrix_keypad_interrupt()
193 	spin_unlock_irqrestore(&keypad->lock, flags);  in matrix_keypad_interrupt()
199 	struct matrix_keypad *keypad = input_get_drvdata(dev);  in matrix_keypad_start()  local
201 	keypad->stopped = false;  in matrix_keypad_start()
208 	schedule_delayed_work(&keypad->work, 0);  in matrix_keypad_start()
215 	struct matrix_keypad *keypad = input_get_drvdata(dev);  in matrix_keypad_stop()  local
217 	spin_lock_irq(&keypad->lock);  in matrix_keypad_stop()
218 	keypad->stopped = true;  in matrix_keypad_stop()
219 	spin_unlock_irq(&keypad->lock);  in matrix_keypad_stop()
221 	flush_delayed_work(&keypad->work);  in matrix_keypad_stop()
226 	disable_row_irqs(keypad);  in matrix_keypad_stop()
230 static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)  in matrix_keypad_enable_wakeup()  argument
232 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_enable_wakeup()
238 			keypad->gpio_all_disabled = true;  in matrix_keypad_enable_wakeup()
242 			if (!test_bit(i, keypad->disabled_gpios)) {  in matrix_keypad_enable_wakeup()
246 					__set_bit(i, keypad->disabled_gpios);  in matrix_keypad_enable_wakeup()
252 static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)  in matrix_keypad_disable_wakeup()  argument
254 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_disable_wakeup()
259 		if (keypad->gpio_all_disabled) {  in matrix_keypad_disable_wakeup()
261 			keypad->gpio_all_disabled = false;  in matrix_keypad_disable_wakeup()
265 			if (test_and_clear_bit(i, keypad->disabled_gpios)) {  in matrix_keypad_disable_wakeup()
276 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_suspend()  local
278 	matrix_keypad_stop(keypad->input_dev);  in matrix_keypad_suspend()
281 		matrix_keypad_enable_wakeup(keypad);  in matrix_keypad_suspend()
289 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_resume()  local
292 		matrix_keypad_disable_wakeup(keypad);  in matrix_keypad_resume()
294 	matrix_keypad_start(keypad->input_dev);  in matrix_keypad_resume()
304 				   struct matrix_keypad *keypad)  in matrix_keypad_init_gpio()  argument
306 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_init_gpio()
338 				"matrix-keypad", keypad);  in matrix_keypad_init_gpio()
351 					"matrix-keypad", keypad);  in matrix_keypad_init_gpio()
362 	disable_row_irqs(keypad);  in matrix_keypad_init_gpio()
367 		free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);  in matrix_keypad_init_gpio()
380 static void matrix_keypad_free_gpio(struct matrix_keypad *keypad)  in matrix_keypad_free_gpio()  argument
382 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_free_gpio()
386 		free_irq(pdata->clustered_irq, keypad);  in matrix_keypad_free_gpio()
389 			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);  in matrix_keypad_free_gpio()
422 		dev_err(dev, "number of keypad rows/columns not specified\n");  in matrix_keypad_parse_dt()
483 	struct matrix_keypad *keypad;  in matrix_keypad_probe()  local
497 	keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);  in matrix_keypad_probe()
499 	if (!keypad || !input_dev) {  in matrix_keypad_probe()
504 	keypad->input_dev = input_dev;  in matrix_keypad_probe()
505 	keypad->pdata = pdata;  in matrix_keypad_probe()
506 	keypad->row_shift = get_count_order(pdata->num_col_gpios);  in matrix_keypad_probe()
507 	keypad->stopped = true;  in matrix_keypad_probe()
508 	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);  in matrix_keypad_probe()
509 	spin_lock_init(&keypad->lock);  in matrix_keypad_probe()
529 	input_set_drvdata(input_dev, keypad);  in matrix_keypad_probe()
531 	err = matrix_keypad_init_gpio(pdev, keypad);  in matrix_keypad_probe()
535 	err = input_register_device(keypad->input_dev);  in matrix_keypad_probe()
540 	platform_set_drvdata(pdev, keypad);  in matrix_keypad_probe()
545 	matrix_keypad_free_gpio(keypad);  in matrix_keypad_probe()
548 	kfree(keypad);  in matrix_keypad_probe()
554 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_remove()  local
556 	matrix_keypad_free_gpio(keypad);  in matrix_keypad_remove()
557 	input_unregister_device(keypad->input_dev);  in matrix_keypad_remove()
558 	kfree(keypad);  in matrix_keypad_remove()
565 	{ .compatible = "gpio-matrix-keypad" },
575 		.name	= "matrix-keypad",
583 MODULE_DESCRIPTION("GPIO Driven Matrix Keypad Driver");
585 MODULE_ALIAS("platform:matrix-keypad");