Commit 189df987 authored by xinglong.yang's avatar xinglong.yang Committed by Sudeep Holla
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firmware: arm_scmi: Check beforehand if the perf domain set operations are allowed



Certain SCMI performance domains may have restrictions on the set level
and/or limits operation. If the set level/limits are performed by an
agent who is not allowed to do so may get SCMI_ERR_SUPPORT. However,
since this information about the domain is already known to the
agent(OSPM here) obtained via PERF_DOMAIN_ATTRIBUTES, the agent(OSPM)
can avoid making PERF_LEVEL_SET and PERF_LIMITS_SET calls to the firmware.

Add those checks and return -ENOTSUPP to the caller without interacting
with the firmware based on the information collected during the domain
enumeration stage.

Signed-off-by: default avatarxinglong.yang <xinglong.yang@cixtech.com>
Link: https://lore.kernel.org/r/20231109082855.472681-1-xinglong.yang@cixtech.com


Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent b85ea95d
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