89 static void enable_row_irqs(struct matrix_keypad *keypad)  in enable_row_irqs()  argument
91 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in enable_row_irqs()
102 static void disable_row_irqs(struct matrix_keypad *keypad)  in disable_row_irqs()  argument
104 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in disable_row_irqs()
120 	struct matrix_keypad *keypad =  in matrix_keypad_scan()  local
122 	struct input_dev *input_dev = keypad->input_dev;  in matrix_keypad_scan()
124 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_scan()
148 		bits_changed = keypad->last_key_state[col] ^ new_state[col];  in matrix_keypad_scan()
156 			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);  in matrix_keypad_scan()
165 	memcpy(keypad->last_key_state, new_state, sizeof(new_state));  in matrix_keypad_scan()
170 	spin_lock_irq(&keypad->lock);  in matrix_keypad_scan()
171 	keypad->scan_pending = false;  in matrix_keypad_scan()
172 	enable_row_irqs(keypad);  in matrix_keypad_scan()
173 	spin_unlock_irq(&keypad->lock);  in matrix_keypad_scan()
178 	struct matrix_keypad *keypad = id;  in matrix_keypad_interrupt()  local
181 	spin_lock_irqsave(&keypad->lock, flags);  in matrix_keypad_interrupt()
188 	if (unlikely(keypad->scan_pending || keypad->stopped))  in matrix_keypad_interrupt()
191 	disable_row_irqs(keypad);  in matrix_keypad_interrupt()
192 	keypad->scan_pending = true;  in matrix_keypad_interrupt()
193 	schedule_delayed_work(&keypad->work,  in matrix_keypad_interrupt()
194 		msecs_to_jiffies(keypad->pdata->debounce_ms));  in matrix_keypad_interrupt()
197 	spin_unlock_irqrestore(&keypad->lock, flags);  in matrix_keypad_interrupt()
203 	struct matrix_keypad *keypad = input_get_drvdata(dev);  in matrix_keypad_start()  local
205 	keypad->stopped = false;  in matrix_keypad_start()
212 	schedule_delayed_work(&keypad->work, 0);  in matrix_keypad_start()
219 	struct matrix_keypad *keypad = input_get_drvdata(dev);  in matrix_keypad_stop()  local
221 	spin_lock_irq(&keypad->lock);  in matrix_keypad_stop()
222 	keypad->stopped = true;  in matrix_keypad_stop()
223 	spin_unlock_irq(&keypad->lock);  in matrix_keypad_stop()
225 	flush_delayed_work(&keypad->work);  in matrix_keypad_stop()
230 	disable_row_irqs(keypad);  in matrix_keypad_stop()
234 static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)  in matrix_keypad_enable_wakeup()  argument
236 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_enable_wakeup()
242 			keypad->gpio_all_disabled = true;  in matrix_keypad_enable_wakeup()
246 			if (!test_bit(i, keypad->disabled_gpios)) {  in matrix_keypad_enable_wakeup()
250 					__set_bit(i, keypad->disabled_gpios);  in matrix_keypad_enable_wakeup()
256 static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)  in matrix_keypad_disable_wakeup()  argument
258 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_disable_wakeup()
263 		if (keypad->gpio_all_disabled) {  in matrix_keypad_disable_wakeup()
265 			keypad->gpio_all_disabled = false;  in matrix_keypad_disable_wakeup()
269 			if (test_and_clear_bit(i, keypad->disabled_gpios)) {  in matrix_keypad_disable_wakeup()
280 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_suspend()  local
282 	matrix_keypad_stop(keypad->input_dev);  in matrix_keypad_suspend()
285 		matrix_keypad_enable_wakeup(keypad);  in matrix_keypad_suspend()
293 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_resume()  local
296 		matrix_keypad_disable_wakeup(keypad);  in matrix_keypad_resume()
298 	matrix_keypad_start(keypad->input_dev);  in matrix_keypad_resume()
308 				   struct matrix_keypad *keypad)  in matrix_keypad_init_gpio()  argument
310 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_init_gpio()
342 				"matrix-keypad", keypad);  in matrix_keypad_init_gpio()
355 					"matrix-keypad", keypad);  in matrix_keypad_init_gpio()
366 	disable_row_irqs(keypad);  in matrix_keypad_init_gpio()
371 		free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);  in matrix_keypad_init_gpio()
384 static void matrix_keypad_free_gpio(struct matrix_keypad *keypad)  in matrix_keypad_free_gpio()  argument
386 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;  in matrix_keypad_free_gpio()
390 		free_irq(pdata->clustered_irq, keypad);  in matrix_keypad_free_gpio()
393 			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);  in matrix_keypad_free_gpio()
487 	struct matrix_keypad *keypad;  in matrix_keypad_probe()  local
501 	keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);  in matrix_keypad_probe()
503 	if (!keypad || !input_dev) {  in matrix_keypad_probe()
508 	keypad->input_dev = input_dev;  in matrix_keypad_probe()
509 	keypad->pdata = pdata;  in matrix_keypad_probe()
510 	keypad->row_shift = get_count_order(pdata->num_col_gpios);  in matrix_keypad_probe()
511 	keypad->stopped = true;  in matrix_keypad_probe()
512 	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);  in matrix_keypad_probe()
513 	spin_lock_init(&keypad->lock);  in matrix_keypad_probe()
533 	input_set_drvdata(input_dev, keypad);  in matrix_keypad_probe()
535 	err = matrix_keypad_init_gpio(pdev, keypad);  in matrix_keypad_probe()
539 	err = input_register_device(keypad->input_dev);  in matrix_keypad_probe()
544 	platform_set_drvdata(pdev, keypad);  in matrix_keypad_probe()
549 	matrix_keypad_free_gpio(keypad);  in matrix_keypad_probe()
552 	kfree(keypad);  in matrix_keypad_probe()
558 	struct matrix_keypad *keypad = platform_get_drvdata(pdev);  in matrix_keypad_remove()  local
560 	matrix_keypad_free_gpio(keypad);  in matrix_keypad_remove()
561 	input_unregister_device(keypad->input_dev);  in matrix_keypad_remove()
562 	kfree(keypad);  in matrix_keypad_remove()