1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/clk-provider.h>
34 	struct scmi_data *priv = policy->driver_data;  in scmi_cpufreq_get_rate()
38 	ret = perf_ops->freq_get(ph, priv->domain_id, &rate, false);  in scmi_cpufreq_get_rate()
45  * perf_ops->freq_set is not a synchronous, the actual OPP change will
52 	struct scmi_data *priv = policy->driver_data;  in scmi_cpufreq_set_target()
53 	u64 freq = policy->freq_table[index].frequency;  in scmi_cpufreq_set_target()  local
55 	return perf_ops->freq_set(ph, priv->domain_id, freq * 1000, false);  in scmi_cpufreq_set_target()
61 	struct scmi_data *priv = policy->driver_data;  in scmi_cpufreq_fast_switch()
63 	if (!perf_ops->freq_set(ph, priv->domain_id,  in scmi_cpufreq_fast_switch()
73 	int cpu, domain, tdomain;  in scmi_get_sharing_cpus()  local
76 	domain = perf_ops->device_domain_id(cpu_dev);  in scmi_get_sharing_cpus()
77 	if (domain < 0)  in scmi_get_sharing_cpus()
78 		return domain;  in scmi_get_sharing_cpus()
81 		if (cpu == cpu_dev->id)  in scmi_get_sharing_cpus()
88 		tdomain = perf_ops->device_domain_id(tcpu_dev);  in scmi_get_sharing_cpus()
89 		if (tdomain == domain)  in scmi_get_sharing_cpus()
101 	int ret, domain;  in scmi_get_cpu_power()  local
103 	domain = perf_ops->device_domain_id(cpu_dev);  in scmi_get_cpu_power()
104 	if (domain < 0)  in scmi_get_cpu_power()
105 		return domain;  in scmi_get_cpu_power()
107 	/* Get the power cost of the performance domain. */  in scmi_get_cpu_power()
109 	ret = perf_ops->est_power_get(ph, domain, &Hz, power);  in scmi_get_cpu_power()
129 	cpu_dev = get_cpu_device(policy->cpu);  in scmi_cpufreq_init()
131 		pr_err("failed to get cpu%d device\n", policy->cpu);  in scmi_cpufreq_init()
132 		return -ENODEV;  in scmi_cpufreq_init()
135 	ret = perf_ops->device_opps_add(ph, cpu_dev);  in scmi_cpufreq_init()
141 	ret = scmi_get_sharing_cpus(cpu_dev, policy->cpus);  in scmi_cpufreq_init()
147 	ret = dev_pm_opp_set_sharing_cpus(cpu_dev, policy->cpus);  in scmi_cpufreq_init()
157 		ret = -EPROBE_DEFER;  in scmi_cpufreq_init()
163 		ret = -ENOMEM;  in scmi_cpufreq_init()
173 	priv->cpu_dev = cpu_dev;  in scmi_cpufreq_init()
174 	priv->domain_id = perf_ops->device_domain_id(cpu_dev);  in scmi_cpufreq_init()
176 	policy->driver_data = priv;  in scmi_cpufreq_init()
177 	policy->freq_table = freq_table;  in scmi_cpufreq_init()
179 	/* SCMI allows DVFS request for any domain from any CPU */  in scmi_cpufreq_init()
180 	policy->dvfs_possible_from_any_cpu = true;  in scmi_cpufreq_init()
182 	latency = perf_ops->transition_latency_get(ph, cpu_dev);  in scmi_cpufreq_init()
186 	policy->cpuinfo.transition_latency = latency;  in scmi_cpufreq_init()
188 	policy->fast_switch_possible =  in scmi_cpufreq_init()
189 		perf_ops->fast_switch_possible(ph, cpu_dev);  in scmi_cpufreq_init()
191 	power_scale_mw = perf_ops->power_scale_mw_get(ph);  in scmi_cpufreq_init()
192 	em_dev_register_perf_domain(cpu_dev, nr_opp, &em_cb, policy->cpus,  in scmi_cpufreq_init()
207 	struct scmi_data *priv = policy->driver_data;  in scmi_cpufreq_exit()
209 	dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);  in scmi_cpufreq_exit()
210 	dev_pm_opp_remove_all_dynamic(priv->cpu_dev);  in scmi_cpufreq_exit()
233 	struct device *dev = &sdev->dev;  in scmi_cpufreq_probe()
236 	handle = sdev->handle;  in scmi_cpufreq_probe()
239 		return -ENODEV;  in scmi_cpufreq_probe()
241 	perf_ops = handle->devm_get_protocol(sdev, SCMI_PROTOCOL_PERF, &ph);  in scmi_cpufreq_probe()
247 	if (of_find_property(dev->of_node, "#clock-cells", NULL))  in scmi_cpufreq_probe()
272 	.name		= "scmi-cpufreq",