1 // SPDX-License-Identifier: GPL-2.0
3  *  R-Car Gen3 THS thermal sensor driver
106 	return ioread32(tsc->base + reg);  in rcar_gen3_thermal_read()
112 	iowrite32(data, tsc->base + reg);  in rcar_gen3_thermal_write()
118  * [temp] = ((thadj - [reg]) * a) / b + adj
119  * [reg] = thadj - ([temp] - adj) * b / a
140 	priv->tj_t =  in rcar_gen3_thermal_shared_coefs()
141 		DIV_ROUND_CLOSEST((priv->ptat[1] - priv->ptat[2]) * priv->info->scale,  in rcar_gen3_thermal_shared_coefs()
142 				  priv->ptat[0] - priv->ptat[2])  in rcar_gen3_thermal_shared_coefs()
143 		+ priv->info->adj_below;  in rcar_gen3_thermal_shared_coefs()
148 	tsc->coef.below.a = priv->info->scale * (priv->ptat[2] - priv->ptat[1]);  in rcar_gen3_thermal_tsc_coefs()
149 	tsc->coef.above.a = priv->info->scale * (priv->ptat[0] - priv->ptat[1]);  in rcar_gen3_thermal_tsc_coefs()
151 	tsc->coef.below.b = (priv->ptat[2] - priv->ptat[0]) * (tsc->thcode[2] - tsc->thcode[1]);  in rcar_gen3_thermal_tsc_coefs()
152 	tsc->coef.above.b = (priv->ptat[0] - priv->ptat[2]) * (tsc->thcode[1] - tsc->thcode[0]);  in rcar_gen3_thermal_tsc_coefs()
158 	struct rcar_gen3_thermal_priv *priv = tsc->priv;  in rcar_gen3_thermal_get_temp()
162 	/* Read register and convert to mili Celsius */  in rcar_gen3_thermal_get_temp()
165 	if (reg < tsc->thcode[1]) {  in rcar_gen3_thermal_get_temp()
166 		adj = priv->info->adj_below;  in rcar_gen3_thermal_get_temp()
167 		coef = &tsc->coef.below;  in rcar_gen3_thermal_get_temp()
168 		thcode = tsc->thcode[2];  in rcar_gen3_thermal_get_temp()
170 		adj = priv->info->adj_above;  in rcar_gen3_thermal_get_temp()
171 		coef = &tsc->coef.above;  in rcar_gen3_thermal_get_temp()
172 		thcode = tsc->thcode[0];  in rcar_gen3_thermal_get_temp()
177 	 * divisor to convert to decidegree Celsius. If we convert after the  in rcar_gen3_thermal_get_temp()
179 	 * Celsius.  in rcar_gen3_thermal_get_temp()
181 	decicelsius = DIV_ROUND_CLOSEST(coef->a * (thcode - reg), coef->b / 10);  in rcar_gen3_thermal_get_temp()
183 	/* Guaranteed operating range is -40C to 125C. */  in rcar_gen3_thermal_get_temp()
185 	/* Reporting is done in millidegree Celsius */  in rcar_gen3_thermal_get_temp()
194 	struct rcar_gen3_thermal_priv *priv = tsc->priv;  in rcar_gen3_thermal_mcelsius_to_temp()
196 	int adj, celsius, thcode;  in rcar_gen3_thermal_mcelsius_to_temp()  local
198 	celsius = DIV_ROUND_CLOSEST(mcelsius, 1000);  in rcar_gen3_thermal_mcelsius_to_temp()
199 	if (celsius < priv->tj_t) {  in rcar_gen3_thermal_mcelsius_to_temp()
200 		coef = &tsc->coef.below;  in rcar_gen3_thermal_mcelsius_to_temp()
201 		adj = priv->info->adj_below;  in rcar_gen3_thermal_mcelsius_to_temp()
202 		thcode = tsc->thcode[2];  in rcar_gen3_thermal_mcelsius_to_temp()
204 		coef = &tsc->coef.above;  in rcar_gen3_thermal_mcelsius_to_temp()
205 		adj = priv->info->adj_above;  in rcar_gen3_thermal_mcelsius_to_temp()
206 		thcode = tsc->thcode[0];  in rcar_gen3_thermal_mcelsius_to_temp()
209 	return thcode - DIV_ROUND_CLOSEST((celsius - adj) * coef->b, coef->a);  in rcar_gen3_thermal_mcelsius_to_temp()
217 	if (low != -INT_MAX) {  in rcar_gen3_thermal_set_trips()
245 	for (i = 0; i < priv->num_tscs; i++) {  in rcar_gen3_thermal_irq()
246 		status = rcar_gen3_thermal_read(priv->tscs[i], REG_GEN3_IRQSTR);  in rcar_gen3_thermal_irq()
247 		rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQSTR, 0);  in rcar_gen3_thermal_irq()
248 		if (status && priv->tscs[i]->zone)  in rcar_gen3_thermal_irq()
249 			thermal_zone_device_update(priv->tscs[i]->zone,  in rcar_gen3_thermal_irq()
265 	priv->ptat[0] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT1) &  in rcar_gen3_thermal_read_fuses_gen3()
267 	priv->ptat[1] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT2) &  in rcar_gen3_thermal_read_fuses_gen3()
269 	priv->ptat[2] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT3) &  in rcar_gen3_thermal_read_fuses_gen3()
272 	for (i = 0; i < priv->num_tscs; i++) {  in rcar_gen3_thermal_read_fuses_gen3()
273 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];  in rcar_gen3_thermal_read_fuses_gen3()
275 		tsc->thcode[0] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE1) &  in rcar_gen3_thermal_read_fuses_gen3()
277 		tsc->thcode[1] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE2) &  in rcar_gen3_thermal_read_fuses_gen3()
279 		tsc->thcode[2] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE3) &  in rcar_gen3_thermal_read_fuses_gen3()
293 	priv->ptat[0] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON16) &  in rcar_gen3_thermal_read_fuses_gen4()
295 	priv->ptat[1] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON17) &  in rcar_gen3_thermal_read_fuses_gen4()
297 	priv->ptat[2] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON15) &  in rcar_gen3_thermal_read_fuses_gen4()
300 	for (i = 0; i < priv->num_tscs; i++) {  in rcar_gen3_thermal_read_fuses_gen4()
301 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];  in rcar_gen3_thermal_read_fuses_gen4()
303 		tsc->thcode[0] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON01) &  in rcar_gen3_thermal_read_fuses_gen4()
305 		tsc->thcode[1] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON02) &  in rcar_gen3_thermal_read_fuses_gen4()
307 		tsc->thcode[2] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON00) &  in rcar_gen3_thermal_read_fuses_gen4()
318 	thscp = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_THSCP);  in rcar_gen3_thermal_read_fuses()
319 	if (!priv->info->read_fuses ||  in rcar_gen3_thermal_read_fuses()
330 		priv->ptat[0] = 2631;  in rcar_gen3_thermal_read_fuses()
331 		priv->ptat[1] = 1509;  in rcar_gen3_thermal_read_fuses()
332 		priv->ptat[2] = 435;  in rcar_gen3_thermal_read_fuses()
334 		for (i = 0; i < priv->num_tscs; i++) {  in rcar_gen3_thermal_read_fuses()
335 			struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];  in rcar_gen3_thermal_read_fuses()
337 			tsc->thcode[0] = thcodes[i][0];  in rcar_gen3_thermal_read_fuses()
338 			tsc->thcode[1] = thcodes[i][1];  in rcar_gen3_thermal_read_fuses()
339 			tsc->thcode[2] = thcodes[i][2];  in rcar_gen3_thermal_read_fuses()
345 	priv->info->read_fuses(priv);  in rcar_gen3_thermal_read_fuses()
362 	if (priv->ops.set_trips)  in rcar_gen3_thermal_init()
375 	.adj_below = -41,
382 	.adj_below = -41,
389 	.adj_below = -41,
396 		.compatible = "renesas,r8a774a1-thermal",
400 		.compatible = "renesas,r8a774b1-thermal",
404 		.compatible = "renesas,r8a774e1-thermal",
408 		.compatible = "renesas,r8a7795-thermal",
412 		.compatible = "renesas,r8a7796-thermal",
416 		.compatible = "renesas,r8a77961-thermal",
420 		.compatible = "renesas,r8a77965-thermal",
424 		.compatible = "renesas,r8a77980-thermal",
428 		.compatible = "renesas,r8a779a0-thermal",
432 		.compatible = "renesas,r8a779f0-thermal",
436 		.compatible = "renesas,r8a779g0-thermal",
440 		.compatible = "renesas,r8a779h0-thermal",
449 	struct device *dev = &pdev->dev;  in rcar_gen3_thermal_remove()
465 	struct device *dev = &pdev->dev;  in rcar_gen3_thermal_request_irqs()
478 			return -ENOMEM;  in rcar_gen3_thermal_request_irqs()
493 	struct device *dev = &pdev->dev;  in rcar_gen3_thermal_probe()
501 		return -ENOMEM;  in rcar_gen3_thermal_probe()
503 	priv->ops = rcar_gen3_tz_of_ops;  in rcar_gen3_thermal_probe()
505 	priv->info = of_device_get_match_data(dev);  in rcar_gen3_thermal_probe()
509 		priv->ops.set_trips = NULL;  in rcar_gen3_thermal_probe()
523 			ret = -ENOMEM;  in rcar_gen3_thermal_probe()
527 		tsc->priv = priv;  in rcar_gen3_thermal_probe()
528 		tsc->base = devm_ioremap_resource(dev, res);  in rcar_gen3_thermal_probe()
529 		if (IS_ERR(tsc->base)) {  in rcar_gen3_thermal_probe()
530 			ret = PTR_ERR(tsc->base);  in rcar_gen3_thermal_probe()
534 		priv->tscs[i] = tsc;  in rcar_gen3_thermal_probe()
537 	priv->num_tscs = i;  in rcar_gen3_thermal_probe()
544 	for (i = 0; i < priv->num_tscs; i++) {  in rcar_gen3_thermal_probe()
545 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];  in rcar_gen3_thermal_probe()
550 		zone = devm_thermal_of_zone_register(dev, i, tsc, &priv->ops);  in rcar_gen3_thermal_probe()
556 		tsc->zone = zone;  in rcar_gen3_thermal_probe()
558 		ret = thermal_add_hwmon_sysfs(tsc->zone);  in rcar_gen3_thermal_probe()
569 	if (!priv->num_tscs) {  in rcar_gen3_thermal_probe()
570 		ret = -ENODEV;  in rcar_gen3_thermal_probe()
587 	for (i = 0; i < priv->num_tscs; i++) {  in rcar_gen3_thermal_resume()
588 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];  in rcar_gen3_thermal_resume()
611 MODULE_DESCRIPTION("R-Car Gen3 THS thermal sensor driver");
612 MODULE_AUTHOR("Wolfram Sang <wsa+renesas@sang-engineering.com>");