34 static int smcwd_call(struct watchdog_device *wdd, enum smcwd_call call,  in smcwd_call()  argument
42 	arm_smccc_smc((u32)(uintptr_t)watchdog_get_drvdata(wdd), call, arg, 0,  in smcwd_call()
54 static int smcwd_ping(struct watchdog_device *wdd)  in smcwd_ping()  argument
56 	return smcwd_call(wdd, SMCWD_PET, 0, NULL);  in smcwd_ping()
59 static unsigned int smcwd_get_timeleft(struct watchdog_device *wdd)  in smcwd_get_timeleft()  argument
63 	smcwd_call(wdd, SMCWD_GET_TIMELEFT, 0, &res);  in smcwd_get_timeleft()
69 static int smcwd_set_timeout(struct watchdog_device *wdd, unsigned int timeout)  in smcwd_set_timeout()  argument
73 	res = smcwd_call(wdd, SMCWD_SET_TIMEOUT, timeout, NULL);  in smcwd_set_timeout()
75 		wdd->timeout = timeout;  in smcwd_set_timeout()
79 static int smcwd_stop(struct watchdog_device *wdd)  in smcwd_stop()  argument
81 	return smcwd_call(wdd, SMCWD_ENABLE, 0, NULL);  in smcwd_stop()
84 static int smcwd_start(struct watchdog_device *wdd)  in smcwd_start()  argument
86 	return smcwd_call(wdd, SMCWD_ENABLE, 1, NULL);  in smcwd_start()
113 	struct watchdog_device *wdd;  in smcwd_probe()  local
118 	wdd = devm_kzalloc(&pdev->dev, sizeof(*wdd), GFP_KERNEL);  in smcwd_probe()
119 	if (!wdd)  in smcwd_probe()
121 	platform_set_drvdata(pdev, wdd);  in smcwd_probe()
126 	watchdog_set_drvdata(wdd, (void *)(uintptr_t)smc_func_id);  in smcwd_probe()
128 	err = smcwd_call(wdd, SMCWD_INIT, 0, &res);  in smcwd_probe()
132 	wdd->info = &smcwd_info;  in smcwd_probe()
134 	if (smcwd_call(wdd, SMCWD_GET_TIMELEFT, 0, NULL))  in smcwd_probe()
135 		wdd->ops = &smcwd_ops;  in smcwd_probe()
137 		wdd->ops = &smcwd_timeleft_ops;  in smcwd_probe()
138 	wdd->timeout = res.a2;  in smcwd_probe()
139 	wdd->max_timeout = res.a2;  in smcwd_probe()
140 	wdd->min_timeout = res.a1;  in smcwd_probe()
141 	wdd->parent = &pdev->dev;  in smcwd_probe()
143 	watchdog_stop_on_reboot(wdd);  in smcwd_probe()
144 	watchdog_stop_on_unregister(wdd);  in smcwd_probe()
145 	watchdog_set_nowayout(wdd, nowayout);  in smcwd_probe()
146 	watchdog_init_timeout(wdd, timeout, &pdev->dev);  in smcwd_probe()
147 	err = smcwd_set_timeout(wdd, wdd->timeout);  in smcwd_probe()
151 	err = devm_watchdog_register_device(&pdev->dev, wdd);  in smcwd_probe()
157 		 wdd->timeout, nowayout);  in smcwd_probe()