58 } mtx1_wdt_device;  variable
62 	spin_lock(&mtx1_wdt_device.lock);  in mtx1_wdt_trigger()
63 	if (mtx1_wdt_device.running)  in mtx1_wdt_trigger()
67 	mtx1_wdt_device.gstate = !mtx1_wdt_device.gstate;  in mtx1_wdt_trigger()
68 	gpiod_set_value(mtx1_wdt_device.gpiod, mtx1_wdt_device.gstate);  in mtx1_wdt_trigger()
70 	if (mtx1_wdt_device.queue && ticks)  in mtx1_wdt_trigger()
71 		mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);  in mtx1_wdt_trigger()
73 		complete(&mtx1_wdt_device.stop);  in mtx1_wdt_trigger()
74 	spin_unlock(&mtx1_wdt_device.lock);  in mtx1_wdt_trigger()
79 	ticks = mtx1_wdt_device.default_ticks;  in mtx1_wdt_reset()
87 	spin_lock_irqsave(&mtx1_wdt_device.lock, flags);  in mtx1_wdt_start()
88 	if (!mtx1_wdt_device.queue) {  in mtx1_wdt_start()
89 		mtx1_wdt_device.queue = 1;  in mtx1_wdt_start()
90 		mtx1_wdt_device.gstate = 1;  in mtx1_wdt_start()
91 		gpiod_set_value(mtx1_wdt_device.gpiod, 1);  in mtx1_wdt_start()
92 		mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);  in mtx1_wdt_start()
94 	mtx1_wdt_device.running++;  in mtx1_wdt_start()
95 	spin_unlock_irqrestore(&mtx1_wdt_device.lock, flags);  in mtx1_wdt_start()
102 	spin_lock_irqsave(&mtx1_wdt_device.lock, flags);  in mtx1_wdt_stop()
103 	if (mtx1_wdt_device.queue) {  in mtx1_wdt_stop()
104 		mtx1_wdt_device.queue = 0;  in mtx1_wdt_stop()
105 		mtx1_wdt_device.gstate = 0;  in mtx1_wdt_stop()
106 		gpiod_set_value(mtx1_wdt_device.gpiod, 0);  in mtx1_wdt_stop()
108 	ticks = mtx1_wdt_device.default_ticks;  in mtx1_wdt_stop()
109 	spin_unlock_irqrestore(&mtx1_wdt_device.lock, flags);  in mtx1_wdt_stop()
117 	if (test_and_set_bit(0, &mtx1_wdt_device.inuse))  in mtx1_wdt_open()
125 	clear_bit(0, &mtx1_wdt_device.inuse);  in mtx1_wdt_release()
200 	mtx1_wdt_device.gpiod = devm_gpiod_get(&pdev->dev,  in mtx1_wdt_probe()
202 	if (IS_ERR(mtx1_wdt_device.gpiod)) {  in mtx1_wdt_probe()
204 		return PTR_ERR(mtx1_wdt_device.gpiod);  in mtx1_wdt_probe()
207 	spin_lock_init(&mtx1_wdt_device.lock);  in mtx1_wdt_probe()
208 	init_completion(&mtx1_wdt_device.stop);  in mtx1_wdt_probe()
209 	mtx1_wdt_device.queue = 0;  in mtx1_wdt_probe()
210 	clear_bit(0, &mtx1_wdt_device.inuse);  in mtx1_wdt_probe()
211 	timer_setup(&mtx1_wdt_device.timer, mtx1_wdt_trigger, 0);  in mtx1_wdt_probe()
212 	mtx1_wdt_device.default_ticks = ticks;  in mtx1_wdt_probe()
227 	if (mtx1_wdt_device.queue) {  in mtx1_wdt_remove()
228 		mtx1_wdt_device.queue = 0;  in mtx1_wdt_remove()
229 		wait_for_completion(&mtx1_wdt_device.stop);  in mtx1_wdt_remove()