1 // SPDX-License-Identifier: GPL-2.0
3  *  R-Car THS/TSC thermal sensor driver
20 #include <linux/thermal.h>
101 	list_for_each_entry(pos, &common->head, list)
104 #define rcar_priv_to_dev(priv)		((priv)->common->dev)
105 #define rcar_has_irq_support(priv)	((priv)->common->base)
106 #define rcar_id_to_shift(priv)		((priv)->id * 8)
110 		.compatible = "renesas,rcar-thermal",
114 		.compatible = "renesas,rcar-gen2-thermal",
118 		.compatible = "renesas,thermal-r8a774c0",
122 		.compatible = "renesas,thermal-r8a77970",
126 		.compatible = "renesas,thermal-r8a77990",
130 		.compatible = "renesas,thermal-r8a77995",
145 	return ioread32(common->base + reg);  in _rcar_thermal_common_read()
153 	iowrite32(data, common->base + reg);  in _rcar_thermal_common_write()
163 	val = ioread32(common->base + reg);  in _rcar_thermal_common_bset()
166 	iowrite32(val, common->base + reg);  in _rcar_thermal_common_bset()
172 	return ioread32(priv->base + reg);  in _rcar_thermal_read()
179 	iowrite32(data, priv->base + reg);  in _rcar_thermal_write()
188 	val = ioread32(priv->base + reg);  in _rcar_thermal_bset()
191 	iowrite32(val, priv->base + reg);  in _rcar_thermal_bset()
200 	int old, new, ctemp = -EINVAL;  in rcar_thermal_update_temp()
203 	mutex_lock(&priv->lock);  in rcar_thermal_update_temp()
229 		dev_err(dev, "thermal sensor was broken\n");  in rcar_thermal_update_temp()
237 		if (priv->chip->has_filonoff)  in rcar_thermal_update_temp()
242 		rcar_thermal_write(priv, INTCTRL, (((ctemp - 0) << 8) |  in rcar_thermal_update_temp()
243 						   ((ctemp - 1) << 0)));  in rcar_thermal_update_temp()
247 	mutex_unlock(&priv->lock);  in rcar_thermal_update_temp()
261 	/* Guaranteed operating range is -45C to 125C. */  in rcar_thermal_get_current_temp()
263 	if (priv->chip->ctemp_bands == 1)  in rcar_thermal_get_current_temp()
264 		*temp = MCELSIUS((ctemp * 5) - 65);  in rcar_thermal_get_current_temp()
266 		*temp = MCELSIUS(((ctemp * 55) - 720) / 10);  in rcar_thermal_get_current_temp()
268 		*temp = MCELSIUS((ctemp * 5) - 60);  in rcar_thermal_get_current_temp()
295 	struct rcar_thermal_common *common = priv->common;  in _rcar_thermal_irq_ctrl()
302 	spin_lock_irqsave(&common->lock, flags);  in _rcar_thermal_irq_ctrl()
306 	spin_unlock_irqrestore(&common->lock, flags);  in _rcar_thermal_irq_ctrl()
322 	thermal_zone_device_update(priv->zone, THERMAL_EVENT_UNSPECIFIED);  in rcar_thermal_work()
332 		dev_dbg(dev, "thermal%d %s%s\n",  in rcar_thermal_had_changed()
333 			priv->id,  in rcar_thermal_had_changed()
347 	spin_lock(&common->lock);  in rcar_thermal_irq()
353 	spin_unlock(&common->lock);  in rcar_thermal_irq()
363 			queue_delayed_work(system_freezable_wq, &priv->work,  in rcar_thermal_irq()
377 	struct device *dev = &pdev->dev;  in rcar_thermal_remove()
382 		cancel_delayed_work_sync(&priv->work);  in rcar_thermal_remove()
383 		if (priv->chip->use_of_thermal)  in rcar_thermal_remove()
384 			thermal_remove_hwmon_sysfs(priv->zone);  in rcar_thermal_remove()
386 			thermal_zone_device_unregister(priv->zone);  in rcar_thermal_remove()
397 	struct device *dev = &pdev->dev;  in rcar_thermal_probe()
402 	int ret = -ENODEV;  in rcar_thermal_probe()
408 		return -ENOMEM;  in rcar_thermal_probe()
412 	INIT_LIST_HEAD(&common->head);  in rcar_thermal_probe()
413 	spin_lock_init(&common->lock);  in rcar_thermal_probe()
414 	common->dev = dev;  in rcar_thermal_probe()
419 	for (i = 0; i < chip->nirqs; i++) {  in rcar_thermal_probe()
423 		if (ret < 0 && ret != -ENXIO)  in rcar_thermal_probe()
430 		if (!common->base) {  in rcar_thermal_probe()
438 			common->base = devm_ioremap_resource(dev, res);  in rcar_thermal_probe()
439 			if (IS_ERR(common->base)) {  in rcar_thermal_probe()
440 				ret = PTR_ERR(common->base);  in rcar_thermal_probe()
455 		if (chip->irq_per_ch)  in rcar_thermal_probe()
466 			ret = -ENOMEM;  in rcar_thermal_probe()
470 		priv->base = devm_ioremap_resource(dev, res);  in rcar_thermal_probe()
471 		if (IS_ERR(priv->base)) {  in rcar_thermal_probe()
472 			ret = PTR_ERR(priv->base);  in rcar_thermal_probe()
476 		priv->common = common;  in rcar_thermal_probe()
477 		priv->id = i;  in rcar_thermal_probe()
478 		priv->chip = chip;  in rcar_thermal_probe()
479 		mutex_init(&priv->lock);  in rcar_thermal_probe()
480 		INIT_LIST_HEAD(&priv->list);  in rcar_thermal_probe()
481 		INIT_DELAYED_WORK(&priv->work, rcar_thermal_work);  in rcar_thermal_probe()
486 		if (chip->use_of_thermal) {  in rcar_thermal_probe()
487 			priv->zone = devm_thermal_of_zone_register(  in rcar_thermal_probe()
491 			priv->zone = thermal_zone_device_register_with_trips(  in rcar_thermal_probe()
496 			ret = thermal_zone_device_enable(priv->zone);  in rcar_thermal_probe()
498 				thermal_zone_device_unregister(priv->zone);  in rcar_thermal_probe()
499 				priv->zone = ERR_PTR(ret);  in rcar_thermal_probe()
502 		if (IS_ERR(priv->zone)) {  in rcar_thermal_probe()
503 			dev_err(dev, "can't register thermal zone\n");  in rcar_thermal_probe()
504 			ret = PTR_ERR(priv->zone);  in rcar_thermal_probe()
505 			priv->zone = NULL;  in rcar_thermal_probe()
509 		if (chip->use_of_thermal) {  in rcar_thermal_probe()
510 			ret = thermal_add_hwmon_sysfs(priv->zone);  in rcar_thermal_probe()
517 		list_move_tail(&priv->list, &common->head);  in rcar_thermal_probe()
520 		if (!chip->irq_per_ch)  in rcar_thermal_probe()
524 	if (common->base && enr_bits)  in rcar_thermal_probe()
541 	struct rcar_thermal_priv *priv = list_first_entry(&common->head,  in rcar_thermal_suspend()
544 	if (priv->chip->needs_suspend_resume) {  in rcar_thermal_suspend()
556 	struct rcar_thermal_priv *priv = list_first_entry(&common->head,  in rcar_thermal_resume()
560 	if (priv->chip->needs_suspend_resume) {  in rcar_thermal_resume()
587 MODULE_DESCRIPTION("R-Car THS/TSC thermal sensor driver");