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.rasmus...@arm.com> Reviewed-by: Cristian Marussi <cristian.maru...@arm.com> Signed-off-by: Lukasz Luba <lukasz.l...@arm.com> --- drivers/firmware/arm_scmi/perf.c | 8 ++++++++ include/linux/scmi_protocol.h | 1 + 2 files changed, 9 insertions(+) diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c index 82fb3babff72..e374b1125fca 100644 --- a/drivers/firmware/arm_scmi/perf.c +++ b/drivers/firmware/arm_scmi/perf.c @@ -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, diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index dd9e94849fc1..ecb3aad1a964 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -122,6 +122,7 @@ 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); }; /** -- 2.17.1