75 static void mpc8xxx_wdt_keepalive(struct mpc8xxx_wdt_ddata *ddata)  in mpc8xxx_wdt_keepalive()  argument
78 	spin_lock(&ddata->lock);  in mpc8xxx_wdt_keepalive()
79 	out_be16(&ddata->base->swsrr, 0x556c);  in mpc8xxx_wdt_keepalive()
80 	out_be16(&ddata->base->swsrr, 0xaa39);  in mpc8xxx_wdt_keepalive()
81 	spin_unlock(&ddata->lock);  in mpc8xxx_wdt_keepalive()
86 	struct mpc8xxx_wdt_ddata *ddata = (void *)arg;  in mpc8xxx_wdt_timer_ping()  local
88 	mpc8xxx_wdt_keepalive(ddata);  in mpc8xxx_wdt_timer_ping()
90 	mod_timer(&ddata->timer, jiffies + HZ * ddata->wdd.timeout / 2);  in mpc8xxx_wdt_timer_ping()
95 	struct mpc8xxx_wdt_ddata *ddata =  in mpc8xxx_wdt_start()  local
106 	out_be32(&ddata->base->swcrr, tmp);  in mpc8xxx_wdt_start()
108 	del_timer_sync(&ddata->timer);  in mpc8xxx_wdt_start()
115 	struct mpc8xxx_wdt_ddata *ddata =  in mpc8xxx_wdt_ping()  local
118 	mpc8xxx_wdt_keepalive(ddata);  in mpc8xxx_wdt_ping()
124 	struct mpc8xxx_wdt_ddata *ddata =  in mpc8xxx_wdt_stop()  local
127 	mod_timer(&ddata->timer, jiffies);  in mpc8xxx_wdt_stop()
149 	struct mpc8xxx_wdt_ddata *ddata;  in mpc8xxx_wdt_probe()  local
161 	ddata = devm_kzalloc(&ofdev->dev, sizeof(*ddata), GFP_KERNEL);  in mpc8xxx_wdt_probe()
162 	if (!ddata)  in mpc8xxx_wdt_probe()
166 	ddata->base = devm_ioremap_resource(&ofdev->dev, res);  in mpc8xxx_wdt_probe()
167 	if (IS_ERR(ddata->base))  in mpc8xxx_wdt_probe()
168 		return PTR_ERR(ddata->base);  in mpc8xxx_wdt_probe()
170 	enabled = in_be32(&ddata->base->swcrr) & SWCRR_SWEN;  in mpc8xxx_wdt_probe()
176 	spin_lock_init(&ddata->lock);  in mpc8xxx_wdt_probe()
177 	setup_timer(&ddata->timer, mpc8xxx_wdt_timer_ping,  in mpc8xxx_wdt_probe()
178 		    (unsigned long)ddata);  in mpc8xxx_wdt_probe()
180 	ddata->wdd.info = &mpc8xxx_wdt_info,  in mpc8xxx_wdt_probe()
181 	ddata->wdd.ops = &mpc8xxx_wdt_ops,  in mpc8xxx_wdt_probe()
186 	ddata->wdd.timeout = timeout_sec;  in mpc8xxx_wdt_probe()
188 	watchdog_set_nowayout(&ddata->wdd, nowayout);  in mpc8xxx_wdt_probe()
190 	ret = watchdog_register_device(&ddata->wdd);  in mpc8xxx_wdt_probe()
205 		mod_timer(&ddata->timer, jiffies);  in mpc8xxx_wdt_probe()
207 	platform_set_drvdata(ofdev, ddata);  in mpc8xxx_wdt_probe()
213 	struct mpc8xxx_wdt_ddata *ddata = platform_get_drvdata(ofdev);  in mpc8xxx_wdt_remove()  local
217 	del_timer_sync(&ddata->timer);  in mpc8xxx_wdt_remove()
218 	watchdog_unregister_device(&ddata->wdd);  in mpc8xxx_wdt_remove()