1 // SPDX-License-Identifier: GPL-2.0
3  *  R-Car THS/TSC thermal sensor driver
20 #include <linux/thermal.h>
98 	list_for_each_entry(pos, &common->head, list)
101 #define rcar_zone_to_priv(zone)		((zone)->devdata)
102 #define rcar_priv_to_dev(priv)		((priv)->common->dev)
103 #define rcar_has_irq_support(priv)	((priv)->common->base)
104 #define rcar_id_to_shift(priv)		((priv)->id * 8)
108 		.compatible = "renesas,rcar-thermal",
112 		.compatible = "renesas,rcar-gen2-thermal",
116 		.compatible = "renesas,thermal-r8a77995",
131 	return ioread32(common->base + reg);  in _rcar_thermal_common_read()
139 	iowrite32(data, common->base + reg);  in _rcar_thermal_common_write()
149 	val = ioread32(common->base + reg);  in _rcar_thermal_common_bset()
152 	iowrite32(val, common->base + reg);  in _rcar_thermal_common_bset()
158 	return ioread32(priv->base + reg);  in _rcar_thermal_read()
165 	iowrite32(data, priv->base + reg);  in _rcar_thermal_write()
174 	val = ioread32(priv->base + reg);  in _rcar_thermal_bset()
177 	iowrite32(val, priv->base + reg);  in _rcar_thermal_bset()
188 	int ret = -EINVAL;  in rcar_thermal_update_temp()
190 	mutex_lock(&priv->lock);  in rcar_thermal_update_temp()
217 		dev_err(dev, "thermal sensor was broken\n");  in rcar_thermal_update_temp()
225 		if (priv->chip->has_filonoff)  in rcar_thermal_update_temp()
230 		rcar_thermal_write(priv, INTCTRL, (((ctemp - 0) << 8) |  in rcar_thermal_update_temp()
231 						   ((ctemp - 1) << 0)));  in rcar_thermal_update_temp()
234 	dev_dbg(dev, "thermal%d  %d -> %d\n", priv->id, priv->ctemp, ctemp);  in rcar_thermal_update_temp()
236 	priv->ctemp = ctemp;  in rcar_thermal_update_temp()
239 	mutex_unlock(&priv->lock);  in rcar_thermal_update_temp()
253 	mutex_lock(&priv->lock);  in rcar_thermal_get_current_temp()
254 	tmp =  MCELSIUS((priv->ctemp * 5) - 65);  in rcar_thermal_get_current_temp()
255 	mutex_unlock(&priv->lock);  in rcar_thermal_get_current_temp()
257 	if ((tmp < MCELSIUS(-45)) || (tmp > MCELSIUS(125))) {  in rcar_thermal_get_current_temp()
261 		return -EIO;  in rcar_thermal_get_current_temp()
296 		return -EINVAL;  in rcar_thermal_get_trip_type()
315 		return -EINVAL;  in rcar_thermal_get_trip_temp()
330 		dev_warn(dev, "Thermal reached to critical temperature\n");  in rcar_thermal_notify()
357 	struct rcar_thermal_common *common = priv->common;  in _rcar_thermal_irq_ctrl()
364 	spin_lock_irqsave(&common->lock, flags);  in _rcar_thermal_irq_ctrl()
368 	spin_unlock_irqrestore(&common->lock, flags);  in _rcar_thermal_irq_ctrl()
394 		thermal_zone_device_update(priv->zone,  in rcar_thermal_work()
405 		dev_dbg(dev, "thermal%d %s%s\n",  in rcar_thermal_had_changed()
406 			priv->id,  in rcar_thermal_had_changed()
421 	spin_lock_irqsave(&common->lock, flags);  in rcar_thermal_irq()
427 	spin_unlock_irqrestore(&common->lock, flags);  in rcar_thermal_irq()
437 			queue_delayed_work(system_freezable_wq, &priv->work,  in rcar_thermal_irq()
451 	struct device *dev = &pdev->dev;  in rcar_thermal_remove()
456 		cancel_delayed_work_sync(&priv->work);  in rcar_thermal_remove()
457 		if (priv->chip->use_of_thermal)  in rcar_thermal_remove()
458 			thermal_remove_hwmon_sysfs(priv->zone);  in rcar_thermal_remove()
460 			thermal_zone_device_unregister(priv->zone);  in rcar_thermal_remove()
473 	struct device *dev = &pdev->dev;  in rcar_thermal_probe()
478 	int ret = -ENODEV;  in rcar_thermal_probe()
479 	int idle = IDLE_INTERVAL;  in rcar_thermal_probe()  local
484 		return -ENOMEM;  in rcar_thermal_probe()
488 	INIT_LIST_HEAD(&common->head);  in rcar_thermal_probe()
489 	spin_lock_init(&common->lock);  in rcar_thermal_probe()
490 	common->dev = dev;  in rcar_thermal_probe()
495 	for (i = 0; i < chip->nirqs; i++) {  in rcar_thermal_probe()
499 		if (!common->base) {  in rcar_thermal_probe()
507 			common->base = devm_ioremap_resource(dev, res);  in rcar_thermal_probe()
508 			if (IS_ERR(common->base)) {  in rcar_thermal_probe()
509 				ret = PTR_ERR(common->base);  in rcar_thermal_probe()
513 			idle = 0; /* polling delay is not needed */  in rcar_thermal_probe()
516 		ret = devm_request_irq(dev, irq->start, rcar_thermal_irq,  in rcar_thermal_probe()
524 		if (chip->irq_per_ch)  in rcar_thermal_probe()
535 			ret = -ENOMEM;  in rcar_thermal_probe()
539 		priv->base = devm_ioremap_resource(dev, res);  in rcar_thermal_probe()
540 		if (IS_ERR(priv->base)) {  in rcar_thermal_probe()
541 			ret = PTR_ERR(priv->base);  in rcar_thermal_probe()
545 		priv->common = common;  in rcar_thermal_probe()
546 		priv->id = i;  in rcar_thermal_probe()
547 		priv->chip = chip;  in rcar_thermal_probe()
548 		mutex_init(&priv->lock);  in rcar_thermal_probe()
549 		INIT_LIST_HEAD(&priv->list);  in rcar_thermal_probe()
550 		INIT_DELAYED_WORK(&priv->work, rcar_thermal_work);  in rcar_thermal_probe()
555 		if (chip->use_of_thermal)  in rcar_thermal_probe()
556 			priv->zone = devm_thermal_zone_of_sensor_register(  in rcar_thermal_probe()
560 			priv->zone = thermal_zone_device_register(  in rcar_thermal_probe()
564 						idle);  in rcar_thermal_probe()
565 		if (IS_ERR(priv->zone)) {  in rcar_thermal_probe()
566 			dev_err(dev, "can't register thermal zone\n");  in rcar_thermal_probe()
567 			ret = PTR_ERR(priv->zone);  in rcar_thermal_probe()
568 			priv->zone = NULL;  in rcar_thermal_probe()
572 		if (chip->use_of_thermal) {  in rcar_thermal_probe()
577 			priv->zone->tzp->no_hwmon = false;  in rcar_thermal_probe()
578 			ret = thermal_add_hwmon_sysfs(priv->zone);  in rcar_thermal_probe()
585 		list_move_tail(&priv->list, &common->head);  in rcar_thermal_probe()
588 		if (!chip->irq_per_ch)  in rcar_thermal_probe()
592 	if (common->base && enr_bits)  in rcar_thermal_probe()
609 	struct rcar_thermal_priv *priv = list_first_entry(&common->head,  in rcar_thermal_suspend()
612 	if (priv->chip->needs_suspend_resume) {  in rcar_thermal_suspend()
624 	struct rcar_thermal_priv *priv = list_first_entry(&common->head,  in rcar_thermal_resume()
628 	if (priv->chip->needs_suspend_resume) {  in rcar_thermal_resume()
655 MODULE_DESCRIPTION("R-Car THS/TSC thermal sensor driver");