86 static void enable_row_irqs(struct matrix_keypad *keypad)  in enable_row_irqs()  argument
88 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in enable_row_irqs()
99 static void disable_row_irqs(struct matrix_keypad *keypad)  in disable_row_irqs()  argument
101 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in disable_row_irqs()
117 	struct matrix_keypad *keypad =  in matrix_keypad_scan()  local
119 	struct input_dev *input_dev = keypad->input_dev;  in matrix_keypad_scan()
121 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_scan()
145 		bits_changed = keypad->last_key_state[col] ^ new_state[col];  in matrix_keypad_scan()
153 			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);  in matrix_keypad_scan()
162 	memcpy(keypad->last_key_state, new_state, sizeof(new_state));  in matrix_keypad_scan()
167 	spin_lock_irq(&keypad->lock);  in matrix_keypad_scan()
168 	keypad->scan_pending = false;  in matrix_keypad_scan()
169 	enable_row_irqs(keypad);  in matrix_keypad_scan()
170 	spin_unlock_irq(&keypad->lock);  in matrix_keypad_scan()
175 	struct matrix_keypad *keypad = id;  in matrix_keypad_interrupt()  local
178 	spin_lock_irqsave(&keypad->lock, flags);  in matrix_keypad_interrupt()
185 	if (unlikely(keypad->scan_pending || keypad->stopped))  in matrix_keypad_interrupt()
188 	disable_row_irqs(keypad);  in matrix_keypad_interrupt()
189 	keypad->scan_pending = true;  in matrix_keypad_interrupt()
190 	schedule_delayed_work(&keypad->work,  in matrix_keypad_interrupt()
191 		msecs_to_jiffies(keypad->pdata->debounce_ms));  in matrix_keypad_interrupt()
194 	spin_unlock_irqrestore(&keypad->lock, flags);  in matrix_keypad_interrupt()
200 	struct matrix_keypad *keypad = input_get_drvdata(dev);  in matrix_keypad_start()  local
202 	keypad->stopped = false;  in matrix_keypad_start()
209 	schedule_delayed_work(&keypad->work, 0);  in matrix_keypad_start()
216 	struct matrix_keypad *keypad = input_get_drvdata(dev);  in matrix_keypad_stop()  local
218 	spin_lock_irq(&keypad->lock);  in matrix_keypad_stop()
219 	keypad->stopped = true;  in matrix_keypad_stop()
220 	spin_unlock_irq(&keypad->lock);  in matrix_keypad_stop()
222 	flush_delayed_work(&keypad->work);  in matrix_keypad_stop()
227 	disable_row_irqs(keypad);  in matrix_keypad_stop()
231 static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)  in matrix_keypad_enable_wakeup()  argument
233 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_enable_wakeup()
239 			keypad->gpio_all_disabled = true;  in matrix_keypad_enable_wakeup()
243 			if (!test_bit(i, keypad->disabled_gpios)) {  in matrix_keypad_enable_wakeup()
247 					__set_bit(i, keypad->disabled_gpios);  in matrix_keypad_enable_wakeup()
253 static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)  in matrix_keypad_disable_wakeup()  argument
255 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_disable_wakeup()
260 		if (keypad->gpio_all_disabled) {  in matrix_keypad_disable_wakeup()
262 			keypad->gpio_all_disabled = false;  in matrix_keypad_disable_wakeup()
266 			if (test_and_clear_bit(i, keypad->disabled_gpios)) {  in matrix_keypad_disable_wakeup()
277 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_suspend()  local
279 	matrix_keypad_stop(keypad->input_dev);  in matrix_keypad_suspend()
282 		matrix_keypad_enable_wakeup(keypad);  in matrix_keypad_suspend()
290 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_resume()  local
293 		matrix_keypad_disable_wakeup(keypad);  in matrix_keypad_resume()
295 	matrix_keypad_start(keypad->input_dev);  in matrix_keypad_resume()
305 				   struct matrix_keypad *keypad)  in matrix_keypad_init_gpio()  argument
307 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_init_gpio()
339 				"matrix-keypad", keypad);  in matrix_keypad_init_gpio()
352 					"matrix-keypad", keypad);  in matrix_keypad_init_gpio()
363 	disable_row_irqs(keypad);  in matrix_keypad_init_gpio()
368 		free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);  in matrix_keypad_init_gpio()
381 static void matrix_keypad_free_gpio(struct matrix_keypad *keypad)  in matrix_keypad_free_gpio()  argument
383 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_free_gpio()
387 		free_irq(pdata->clustered_irq, keypad);  in matrix_keypad_free_gpio()
390 			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);  in matrix_keypad_free_gpio()
484 	struct matrix_keypad *keypad;  in matrix_keypad_probe()  local
498 	keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);  in matrix_keypad_probe()
500 	if (!keypad || !input_dev) {  in matrix_keypad_probe()
505 	keypad->input_dev = input_dev;  in matrix_keypad_probe()
506 	keypad->pdata = pdata;  in matrix_keypad_probe()
507 	keypad->row_shift = get_count_order(pdata->num_col_gpios);  in matrix_keypad_probe()
508 	keypad->stopped = true;  in matrix_keypad_probe()
509 	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);  in matrix_keypad_probe()
510 	spin_lock_init(&keypad->lock);  in matrix_keypad_probe()
530 	input_set_drvdata(input_dev, keypad);  in matrix_keypad_probe()
532 	err = matrix_keypad_init_gpio(pdev, keypad);  in matrix_keypad_probe()
536 	err = input_register_device(keypad->input_dev);  in matrix_keypad_probe()
541 	platform_set_drvdata(pdev, keypad);  in matrix_keypad_probe()
546 	matrix_keypad_free_gpio(keypad);  in matrix_keypad_probe()
549 	kfree(keypad);  in matrix_keypad_probe()
555 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_remove()  local
557 	matrix_keypad_free_gpio(keypad);  in matrix_keypad_remove()
558 	input_unregister_device(keypad->input_dev);  in matrix_keypad_remove()
559 	kfree(keypad);  in matrix_keypad_remove()