diff options
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/scmi-cpufreq.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c index a4e1637d335d..c8a4364ad3c2 100644 --- a/drivers/cpufreq/scmi-cpufreq.c +++ b/drivers/cpufreq/scmi-cpufreq.c @@ -2,7 +2,7 @@ /* * System Control and Power Interface (SCMI) based CPUFreq Interface driver * - * Copyright (C) 2018 ARM Ltd. + * Copyright (C) 2018-2021 ARM Ltd. * Sudeep Holla <sudeep.holla@arm.com> */ @@ -25,17 +25,17 @@ struct scmi_data { struct device *cpu_dev; }; -static const struct scmi_handle *handle; +static struct scmi_protocol_handle *ph; +static const struct scmi_perf_proto_ops *perf_ops; static unsigned int scmi_cpufreq_get_rate(unsigned int cpu) { struct cpufreq_policy *policy = cpufreq_cpu_get_raw(cpu); - const struct scmi_perf_ops *perf_ops = handle->perf_ops; struct scmi_data *priv = policy->driver_data; unsigned long rate; int ret; - ret = perf_ops->freq_get(handle, priv->domain_id, &rate, false); + ret = perf_ops->freq_get(ph, priv->domain_id, &rate, false); if (ret) return 0; return rate / 1000; @@ -50,19 +50,17 @@ static int scmi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index) { struct scmi_data *priv = policy->driver_data; - const struct scmi_perf_ops *perf_ops = handle->perf_ops; u64 freq = policy->freq_table[index].frequency; - return perf_ops->freq_set(handle, priv->domain_id, freq * 1000, false); + return perf_ops->freq_set(ph, priv->domain_id, freq * 1000, false); } static unsigned int scmi_cpufreq_fast_switch(struct cpufreq_policy *policy, unsigned int target_freq) { struct scmi_data *priv = policy->driver_data; - const struct scmi_perf_ops *perf_ops = handle->perf_ops; - if (!perf_ops->freq_set(handle, priv->domain_id, + if (!perf_ops->freq_set(ph, priv->domain_id, target_freq * 1000, true)) return target_freq; @@ -75,7 +73,7 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) int cpu, domain, tdomain; struct device *tcpu_dev; - domain = handle->perf_ops->device_domain_id(cpu_dev); + domain = perf_ops->device_domain_id(cpu_dev); if (domain < 0) return domain; @@ -87,7 +85,7 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) if (!tcpu_dev) continue; - tdomain = handle->perf_ops->device_domain_id(tcpu_dev); + tdomain = perf_ops->device_domain_id(tcpu_dev); if (tdomain == domain) cpumask_set_cpu(cpu, cpumask); } @@ -102,13 +100,13 @@ scmi_get_cpu_power(unsigned long *power, unsigned long *KHz, unsigned long Hz; int ret, domain; - domain = handle->perf_ops->device_domain_id(cpu_dev); + domain = perf_ops->device_domain_id(cpu_dev); if (domain < 0) return domain; /* Get the power cost of the performance domain. */ Hz = *KHz * 1000; - ret = handle->perf_ops->est_power_get(handle, domain, &Hz, power); + ret = perf_ops->est_power_get(ph, domain, &Hz, power); if (ret) return ret; @@ -167,7 +165,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy) */ nr_opp = dev_pm_opp_get_opp_count(cpu_dev); if (nr_opp <= 0) { - ret = handle->perf_ops->device_opps_add(handle, cpu_dev); + ret = perf_ops->device_opps_add(ph, cpu_dev); if (ret) { dev_warn(cpu_dev, "failed to add opps to the device\n"); goto out_free_cpumask; @@ -190,7 +188,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy) goto out_free_opp; } - power_scale_mw = handle->perf_ops->power_scale_mw_get(handle); + power_scale_mw = perf_ops->power_scale_mw_get(ph); em_dev_register_perf_domain(cpu_dev, nr_opp, &em_cb, opp_shared_cpus, power_scale_mw); } @@ -208,7 +206,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy) } priv->cpu_dev = cpu_dev; - priv->domain_id = handle->perf_ops->device_domain_id(cpu_dev); + priv->domain_id = perf_ops->device_domain_id(cpu_dev); policy->driver_data = priv; policy->freq_table = freq_table; @@ -216,14 +214,14 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy) /* SCMI allows DVFS request for any domain from any CPU */ policy->dvfs_possible_from_any_cpu = true; - latency = handle->perf_ops->transition_latency_get(handle, cpu_dev); + latency = perf_ops->transition_latency_get(ph, cpu_dev); if (!latency) latency = CPUFREQ_ETERNAL; policy->cpuinfo.transition_latency = latency; policy->fast_switch_possible = - handle->perf_ops->fast_switch_possible(handle, cpu_dev); + perf_ops->fast_switch_possible(ph, cpu_dev); free_cpumask_var(opp_shared_cpus); return 0; @@ -269,12 +267,17 @@ static int scmi_cpufreq_probe(struct scmi_device *sdev) { int ret; struct device *dev = &sdev->dev; + const struct scmi_handle *handle; handle = sdev->handle; - if (!handle || !handle->perf_ops) + if (!handle) return -ENODEV; + perf_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PERF, &ph); + if (IS_ERR(perf_ops)) + return PTR_ERR(perf_ops); + #ifdef CONFIG_COMMON_CLK /* dummy clock provider as needed by OPP if clocks property is used */ if (of_find_property(dev->of_node, "#clock-cells", NULL)) |