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authorQuentin Perret <quentin.perret@arm.com>2018-09-10 17:28:10 +0100
committerSudeep Holla <sudeep.holla@arm.com>2018-09-10 17:37:06 +0100
commit1a63fe9a2b1f47af5b2b7436b41824b14999c17a (patch)
treeb9f7f4b738b24ceb09bccad92b7e7266bbdd55e5 /include/linux/scmi_protocol.h
parentca64b719a1e665ac7449b6a968059176af7365a8 (diff)
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.h4
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);
};
/**