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| author | Quentin Perret <quentin.perret@arm.com> | 2018-09-10 17:28:10 +0100 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2018-09-10 17:37:06 +0100 |
| commit | 1a63fe9a2b1f47af5b2b7436b41824b14999c17a (patch) | |
| tree | b9f7f4b738b24ceb09bccad92b7e7266bbdd55e5 /include/linux/scmi_protocol.h | |
| parent | ca64b719a1e665ac7449b6a968059176af7365a8 (diff) | |
| download | lwn-1a63fe9a2b1f47af5b2b7436b41824b14999c17a.tar.gz lwn-1a63fe9a2b1f47af5b2b7436b41824b14999c17a.zip | |
firmware: arm_scmi: add a getter for power of performance states
The SCMI protocol can be used to get power estimates from firmware
corresponding to each performance state of a device. Although these power
costs are already managed by the SCMI firmware driver, they are not
exposed to any external subsystem yet.
Fix this by adding a new get_power() interface to the exisiting perf_ops
defined for the SCMI protocol.
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'include/linux/scmi_protocol.h')
| -rw-r--r-- | include/linux/scmi_protocol.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index f4c9fc0fc755..3105055c00a7 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -91,6 +91,8 @@ struct scmi_clk_ops { * to sustained performance level mapping * @freq_get: gets the frequency for a given device using sustained frequency * to sustained performance level mapping + * @est_power_get: gets the estimated power cost for a given performance domain + * at a given frequency */ struct scmi_perf_ops { int (*limits_set)(const struct scmi_handle *handle, u32 domain, @@ -110,6 +112,8 @@ struct scmi_perf_ops { unsigned long rate, bool poll); int (*freq_get)(const struct scmi_handle *handle, u32 domain, unsigned long *rate, bool poll); + int (*est_power_get)(const struct scmi_handle *handle, u32 domain, + unsigned long *rate, unsigned long *power); }; /** |