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firmware: arm_scmi: Add power_scale_mw_get() interface

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Add a new interface to the existing perf_ops and export the information
about the power values scale.

This would be used by the cpufreq driver and Energy Model framework to
set the performance domains scale: milli-Watts or abstract scale.

Suggested-by: Morten Rasmussen <morten.rasmussen@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Lukasz Luba 2020-11-24 10:43:45 +00:00 committed by Viresh Kumar
parent c250d50fe2
commit 76ea4d8eee
2 changed files with 9 additions and 0 deletions
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8
drivers/firmware/arm_scmi/perf.c
View File

@ -750,6 +750,13 @@ static bool scmi_fast_switch_possible(const struct scmi_handle *handle,
return dom->fc_info && dom->fc_info->level_set_addr;
}
static bool scmi_power_scale_mw_get(const struct scmi_handle *handle)
{
struct scmi_perf_info *pi = handle->perf_priv;
return pi->power_scale_mw;
}
static const struct scmi_perf_ops perf_ops = {
.limits_set = scmi_perf_limits_set,
.limits_get = scmi_perf_limits_get,
@ -762,6 +769,7 @@ static const struct scmi_perf_ops perf_ops = {
.freq_get = scmi_dvfs_freq_get,
.est_power_get = scmi_dvfs_est_power_get,
.fast_switch_possible = scmi_fast_switch_possible,
.power_scale_mw_get = scmi_power_scale_mw_get,
};
static int scmi_perf_set_notify_enabled(const struct scmi_handle *handle,

1
include/linux/scmi_protocol.h
View File

@ -121,6 +121,7 @@ struct scmi_perf_ops {
unsigned long *rate, unsigned long *power);
bool (*fast_switch_possible)(const struct scmi_handle *handle,
struct device *dev);
bool (*power_scale_mw_get)(const struct scmi_handle *handle);
};
/**