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UPSTREAM: cpufreq: arm_scmi: Discover the power scale in performance protocol

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Add mechanism to discover the power scale present in the performance
protocol for all domains. Provide this information to Energy Model,
which then can be checked in other frameworks, e.g. thermal.

Suggested-by: Morten Rasmussen <morten.rasmussen@arm.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

(cherry picked from commit f9b0498d29)
Bug: 171409184
Change-Id: Id198065d55d4e54f55fc4e7ad00a0610da1ce9a7
Signed-off-by: Rishabh Bhatnagar <quic_rishabhb@quicinc.com>
This commit is contained in:
Lukasz Luba
2020-11-24 10:43:46 +00:00
committed by Todd Kjos
parent 9580671a65
commit 0b22645317
1 changed files with 3 additions and 1 deletions
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4
drivers/cpufreq/scmi-cpufreq.c
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@@ -126,6 +126,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
struct scmi_data *priv;
struct cpufreq_frequency_table *freq_table;
struct em_data_callback em_cb = EM_DATA_CB(scmi_get_cpu_power);
bool power_scale_mw;
cpu_dev = get_cpu_device(policy->cpu);
if (!cpu_dev) {
@@ -189,8 +190,9 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
policy->fast_switch_possible =
handle->perf_ops->fast_switch_possible(handle, cpu_dev);
power_scale_mw = handle->perf_ops->power_scale_mw_get(handle);
em_dev_register_perf_domain(cpu_dev, nr_opp, &em_cb, policy->cpus,
false);
power_scale_mw);
return 0;