1 // SPDX-License-Identifier: GPL-2.0
3  * SCMI performance domain support.
32 	if (!pd->info->set_perf)  in scmi_pd_set_perf_state()
36 		return -EINVAL;  in scmi_pd_set_perf_state()
38 	ret = pd->perf_ops->level_set(pd->ph, pd->domain_id, state, false);  in scmi_pd_set_perf_state()
40 		dev_warn(&genpd->dev, "Failed with %d when trying to set %d perf level",  in scmi_pd_set_perf_state()
54 	 * the performance level can be changed.  in scmi_pd_attach_dev()
56 	if (!pd->info->set_perf)  in scmi_pd_attach_dev()
59 	ret = pd->perf_ops->device_opps_add(pd->ph, dev, pd->domain_id);  in scmi_pd_attach_dev()
71 	if (!pd->info->set_perf)  in scmi_pd_detach_dev()
79 	struct device *dev = &sdev->dev;  in scmi_perf_domain_probe()
80 	const struct scmi_handle *handle = sdev->handle;  in scmi_perf_domain_probe()
89 		return -ENODEV;  in scmi_perf_domain_probe()
91 	/* The OF node must specify us as a power-domain provider. */  in scmi_perf_domain_probe()
92 	if (!of_find_property(dev->of_node, "#power-domain-cells", NULL))  in scmi_perf_domain_probe()
95 	perf_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PERF, &ph);  in scmi_perf_domain_probe()
99 	num_domains = perf_ops->num_domains_get(ph);  in scmi_perf_domain_probe()
110 		return -ENOMEM;  in scmi_perf_domain_probe()
114 		return -ENOMEM;  in scmi_perf_domain_probe()
118 		return -ENOMEM;  in scmi_perf_domain_probe()
121 		scmi_pd->info = perf_ops->info_get(ph, i);  in scmi_perf_domain_probe()
123 		scmi_pd->domain_id = i;  in scmi_perf_domain_probe()
124 		scmi_pd->perf_ops = perf_ops;  in scmi_perf_domain_probe()
125 		scmi_pd->ph = ph;  in scmi_perf_domain_probe()
126 		scmi_pd->genpd.name = scmi_pd->info->name;  in scmi_perf_domain_probe()
127 		scmi_pd->genpd.flags = GENPD_FLAG_ALWAYS_ON |  in scmi_perf_domain_probe()
130 		scmi_pd->genpd.set_performance_state = scmi_pd_set_perf_state;  in scmi_perf_domain_probe()
131 		scmi_pd->genpd.attach_dev = scmi_pd_attach_dev;  in scmi_perf_domain_probe()
132 		scmi_pd->genpd.detach_dev = scmi_pd_detach_dev;  in scmi_perf_domain_probe()
134 		ret = pm_genpd_init(&scmi_pd->genpd, NULL, false);  in scmi_perf_domain_probe()
138 		domains[i] = &scmi_pd->genpd;  in scmi_perf_domain_probe()
141 	scmi_pd_data->domains = domains;  in scmi_perf_domain_probe()
142 	scmi_pd_data->num_domains = num_domains;  in scmi_perf_domain_probe()
144 	ret = of_genpd_add_provider_onecell(dev->of_node, scmi_pd_data);  in scmi_perf_domain_probe()
149 	dev_info(dev, "Initialized %d performance domains", num_domains);  in scmi_perf_domain_probe()
152 	for (i--; i >= 0; i--)  in scmi_perf_domain_probe()
159 	struct device *dev = &sdev->dev;  in scmi_perf_domain_remove()
166 	of_genpd_del_provider(dev->of_node);  in scmi_perf_domain_remove()
168 	for (i = 0; i < scmi_pd_data->num_domains; i++)  in scmi_perf_domain_remove()
169 		pm_genpd_remove(scmi_pd_data->domains[i]);  in scmi_perf_domain_remove()
179 	.name		= "scmi-perf-domain",
187 MODULE_DESCRIPTION("ARM SCMI perf domain driver");