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firmware: arm_scmi: Extend perf protocol ops to get number of domains

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[ Upstream commit e9090e70e6 ]

Similar to other protocol ops, it's useful for an scmi module driver to get
the number of supported performance domains, hence let's make this
available by adding a new perf protocol callback. Note that, a user is
being added from subsequent changes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-2-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Stable-dep-of: 8e3c98d918 ("firmware: arm_scmi: Fix frequency truncation by promoting multiplier type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ulf Hansson 2023-08-25 13:26:21 +02:00 committed by Greg Kroah-Hartman
parent 7cd68b364f
commit 9c78a21a5a
2 changed files with 10 additions and 0 deletions
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8
drivers/firmware/arm_scmi/perf.c
View File

@ -423,6 +423,13 @@ scmi_perf_describe_levels_get(const struct scmi_protocol_handle *ph,
return ret;
}
static int scmi_perf_num_domains_get(const struct scmi_protocol_handle *ph)
{
struct scmi_perf_info *pi = ph->get_priv(ph);
return pi->num_domains;
}
static int scmi_perf_msg_limits_set(const struct scmi_protocol_handle *ph,
u32 domain, u32 max_perf, u32 min_perf)
{
@ -948,6 +955,7 @@ scmi_power_scale_get(const struct scmi_protocol_handle *ph)
}
static const struct scmi_perf_proto_ops perf_proto_ops = {
.num_domains_get = scmi_perf_num_domains_get,
.limits_set = scmi_perf_limits_set,
.limits_get = scmi_perf_limits_get,
.level_set = scmi_perf_level_set,

2
include/linux/scmi_protocol.h
View File

@ -101,6 +101,7 @@ struct scmi_clk_proto_ops {
* struct scmi_perf_proto_ops - represents the various operations provided
* by SCMI Performance Protocol
*
* @num_domains_get: gets the number of supported performance domains
* @limits_set: sets limits on the performance level of a domain
* @limits_get: gets limits on the performance level of a domain
* @level_set: sets the performance level of a domain
@ -120,6 +121,7 @@ struct scmi_clk_proto_ops {
* or in some other (abstract) scale
*/
struct scmi_perf_proto_ops {
int (*num_domains_get)(const struct scmi_protocol_handle *ph);
int (*limits_set)(const struct scmi_protocol_handle *ph, u32 domain,
u32 max_perf, u32 min_perf);
int (*limits_get)(const struct scmi_protocol_handle *ph, u32 domain,