265 	struct sch56xx_watchdog_data *data =  in watchdog_release_resources()  local
267 	kfree(data);  in watchdog_release_resources()
273 	struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);  in watchdog_set_timeout()  local
288 		control = data->watchdog_control | SCH56XX_WDOG_TIME_BASE_SEC;  in watchdog_set_timeout()
290 		control = data->watchdog_control & ~SCH56XX_WDOG_TIME_BASE_SEC;  in watchdog_set_timeout()
292 	if (data->watchdog_control != control) {  in watchdog_set_timeout()
293 		mutex_lock(data->io_lock);  in watchdog_set_timeout()
294 		ret = sch56xx_write_virtual_reg(data->addr,  in watchdog_set_timeout()
297 		mutex_unlock(data->io_lock);  in watchdog_set_timeout()
301 		data->watchdog_control = control;  in watchdog_set_timeout()
308 	data->watchdog_preset = DIV_ROUND_UP(timeout, resolution);  in watchdog_set_timeout()
309 	wddev->timeout = data->watchdog_preset * resolution;  in watchdog_set_timeout()
316 	struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);  in watchdog_start()  local
339 	mutex_lock(data->io_lock);  in watchdog_start()
342 	ret = sch56xx_write_virtual_reg(data->addr, SCH56XX_REG_WDOG_PRESET,  in watchdog_start()
343 					data->watchdog_preset);  in watchdog_start()
348 	val = data->watchdog_output_enable | SCH56XX_WDOG_OUTPUT_ENABLE;  in watchdog_start()
349 	ret = sch56xx_write_virtual_reg(data->addr,  in watchdog_start()
354 	data->watchdog_output_enable = val;  in watchdog_start()
357 	val = inb(data->addr + 9);  in watchdog_start()
359 		outb(0x01, data->addr + 9);  in watchdog_start()
362 	mutex_unlock(data->io_lock);  in watchdog_start()
368 	struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);  in watchdog_trigger()  local
372 	mutex_lock(data->io_lock);  in watchdog_trigger()
373 	ret = sch56xx_write_virtual_reg(data->addr, SCH56XX_REG_WDOG_PRESET,  in watchdog_trigger()
374 					data->watchdog_preset);  in watchdog_trigger()
375 	mutex_unlock(data->io_lock);  in watchdog_trigger()
382 	struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);  in watchdog_stop()  local
386 	val = data->watchdog_output_enable & ~SCH56XX_WDOG_OUTPUT_ENABLE;  in watchdog_stop()
387 	mutex_lock(data->io_lock);  in watchdog_stop()
388 	ret = sch56xx_write_virtual_reg(data->addr,  in watchdog_stop()
390 	mutex_unlock(data->io_lock);  in watchdog_stop()
394 	data->watchdog_output_enable = val;  in watchdog_stop()
400 	struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);  in watchdog_ref()  local
402 	kref_get(&data->kref);  in watchdog_ref()
407 	struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);  in watchdog_unref()  local
409 	kref_put(&data->kref, watchdog_release_resources);  in watchdog_unref()
425 	struct sch56xx_watchdog_data *data;  in sch56xx_watchdog_register()  local
445 	data = kzalloc(sizeof(struct sch56xx_watchdog_data), GFP_KERNEL);  in sch56xx_watchdog_register()
446 	if (!data)  in sch56xx_watchdog_register()
449 	data->addr = addr;  in sch56xx_watchdog_register()
450 	data->io_lock = io_lock;  in sch56xx_watchdog_register()
451 	kref_init(&data->kref);  in sch56xx_watchdog_register()
453 	strlcpy(data->wdinfo.identity, "sch56xx watchdog",  in sch56xx_watchdog_register()
454 		sizeof(data->wdinfo.identity));  in sch56xx_watchdog_register()
455 	data->wdinfo.firmware_version = revision;  in sch56xx_watchdog_register()
456 	data->wdinfo.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT;  in sch56xx_watchdog_register()
458 		data->wdinfo.options |= WDIOF_MAGICCLOSE;  in sch56xx_watchdog_register()
460 	data->wddev.info = &data->wdinfo;  in sch56xx_watchdog_register()
461 	data->wddev.ops = &watchdog_ops;  in sch56xx_watchdog_register()
462 	data->wddev.parent = parent;  in sch56xx_watchdog_register()
463 	data->wddev.timeout = 60;  in sch56xx_watchdog_register()
464 	data->wddev.min_timeout = 1;  in sch56xx_watchdog_register()
465 	data->wddev.max_timeout = 255 * 60;  in sch56xx_watchdog_register()
467 		set_bit(WDOG_NO_WAY_OUT, &data->wddev.status);  in sch56xx_watchdog_register()
469 		set_bit(WDOG_ACTIVE, &data->wddev.status);  in sch56xx_watchdog_register()
475 		data->watchdog_preset = 60; /* seconds */  in sch56xx_watchdog_register()
477 		data->watchdog_preset = 1; /* minute */  in sch56xx_watchdog_register()
479 	data->watchdog_control = control;  in sch56xx_watchdog_register()
480 	data->watchdog_output_enable = output_enable;  in sch56xx_watchdog_register()
482 	watchdog_set_drvdata(&data->wddev, data);  in sch56xx_watchdog_register()
483 	err = watchdog_register_device(&data->wddev);  in sch56xx_watchdog_register()
486 		kfree(data);  in sch56xx_watchdog_register()
490 	return data;  in sch56xx_watchdog_register()
494 void sch56xx_watchdog_unregister(struct sch56xx_watchdog_data *data)  in sch56xx_watchdog_unregister()  argument
496 	watchdog_unregister_device(&data->wddev);  in sch56xx_watchdog_unregister()
497 	kref_put(&data->kref, watchdog_release_resources);  in sch56xx_watchdog_unregister()