1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2015-2017, NVIDIA CORPORATION.  All rights reserved.
16 #include <soc/tegra/bpmp.h>
17 #include <soc/tegra/bpmp-abi.h>
28 	struct tegra_bpmp *bpmp;  member
43 	req.get_temp.zone = zone->idx;  in __tegra_bpmp_thermal_get_temp()
52 	err = tegra_bpmp_transfer(zone->tegra->bpmp, &msg);  in __tegra_bpmp_thermal_get_temp()
56 		return -EINVAL;  in __tegra_bpmp_thermal_get_temp()
65 	return __tegra_bpmp_thermal_get_temp(tz->devdata, out_temp);  in tegra_bpmp_thermal_get_temp()
70 	struct tegra_bpmp_thermal_zone *zone = tz->devdata;  in tegra_bpmp_thermal_set_trips()
77 	req.set_trip.zone = zone->idx;  in tegra_bpmp_thermal_set_trips()
87 	err = tegra_bpmp_transfer(zone->tegra->bpmp, &msg);  in tegra_bpmp_thermal_set_trips()
91 		return -EINVAL;  in tegra_bpmp_thermal_set_trips()
103 	thermal_zone_device_update(zone->tzd, THERMAL_TRIP_VIOLATED);  in tz_device_update_work_fn()
113 	req = (struct mrq_thermal_bpmp_to_host_request *)ch->ib->data;  in bpmp_mrq_thermal()
115 	if (req->type != CMD_THERMAL_HOST_TRIP_REACHED) {  in bpmp_mrq_thermal()
116 		dev_err(tegra->dev, "%s: invalid request type: %d\n",  in bpmp_mrq_thermal()
117 			__func__, req->type);  in bpmp_mrq_thermal()
118 		tegra_bpmp_mrq_return(ch, -EINVAL, NULL, 0);  in bpmp_mrq_thermal()
122 	for (i = 0; i < tegra->num_zones; ++i) {  in bpmp_mrq_thermal()
123 		if (tegra->zones[i]->idx != req->host_trip_reached.zone)  in bpmp_mrq_thermal()
126 		schedule_work(&tegra->zones[i]->tz_device_update_work);  in bpmp_mrq_thermal()
131 	dev_err(tegra->dev, "%s: invalid thermal zone: %d\n", __func__,  in bpmp_mrq_thermal()
132 		req->host_trip_reached.zone);  in bpmp_mrq_thermal()
133 	tegra_bpmp_mrq_return(ch, -EINVAL, NULL, 0);  in bpmp_mrq_thermal()
136 static int tegra_bpmp_thermal_get_num_zones(struct tegra_bpmp *bpmp,  in tegra_bpmp_thermal_get_num_zones()  argument
154 	err = tegra_bpmp_transfer(bpmp, &msg);  in tegra_bpmp_thermal_get_num_zones()
158 		return -EINVAL;  in tegra_bpmp_thermal_get_num_zones()
172 	struct tegra_bpmp *bpmp = dev_get_drvdata(pdev->dev.parent);  in tegra_bpmp_thermal_probe()  local
178 	tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);  in tegra_bpmp_thermal_probe()
180 		return -ENOMEM;  in tegra_bpmp_thermal_probe()
182 	tegra->dev = &pdev->dev;  in tegra_bpmp_thermal_probe()
183 	tegra->bpmp = bpmp;  in tegra_bpmp_thermal_probe()
185 	err = tegra_bpmp_thermal_get_num_zones(bpmp, &max_num_zones);  in tegra_bpmp_thermal_probe()
187 		dev_err(&pdev->dev, "failed to get the number of zones: %d\n",  in tegra_bpmp_thermal_probe()
192 	tegra->zones = devm_kcalloc(&pdev->dev, max_num_zones,  in tegra_bpmp_thermal_probe()
193 				    sizeof(*tegra->zones), GFP_KERNEL);  in tegra_bpmp_thermal_probe()
194 	if (!tegra->zones)  in tegra_bpmp_thermal_probe()
195 		return -ENOMEM;  in tegra_bpmp_thermal_probe()
201 		zone = devm_kzalloc(&pdev->dev, sizeof(*zone), GFP_KERNEL);  in tegra_bpmp_thermal_probe()
203 			return -ENOMEM;  in tegra_bpmp_thermal_probe()
205 		zone->idx = i;  in tegra_bpmp_thermal_probe()
206 		zone->tegra = tegra;  in tegra_bpmp_thermal_probe()
210 			devm_kfree(&pdev->dev, zone);  in tegra_bpmp_thermal_probe()
215 			&pdev->dev, i, zone, &tegra_bpmp_of_thermal_ops);  in tegra_bpmp_thermal_probe()
217 			if (PTR_ERR(tzd) == -EPROBE_DEFER)  in tegra_bpmp_thermal_probe()
218 				return -EPROBE_DEFER;  in tegra_bpmp_thermal_probe()
219 			devm_kfree(&pdev->dev, zone);  in tegra_bpmp_thermal_probe()
223 		zone->tzd = tzd;  in tegra_bpmp_thermal_probe()
224 		INIT_WORK(&zone->tz_device_update_work,  in tegra_bpmp_thermal_probe()
227 		tegra->zones[tegra->num_zones++] = zone;  in tegra_bpmp_thermal_probe()
230 	err = tegra_bpmp_request_mrq(bpmp, MRQ_THERMAL, bpmp_mrq_thermal,  in tegra_bpmp_thermal_probe()
233 		dev_err(&pdev->dev, "failed to register mrq handler: %d\n",  in tegra_bpmp_thermal_probe()
247 	tegra_bpmp_free_mrq(tegra->bpmp, MRQ_THERMAL, tegra);  in tegra_bpmp_thermal_remove()
253 	{ .compatible = "nvidia,tegra186-bpmp-thermal" },
262 		.name = "tegra-bpmp-thermal",
269 MODULE_DESCRIPTION("NVIDIA Tegra BPMP thermal sensor driver");