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Message-ID: <20240117104116.2055349-2-quic_sibis@quicinc.com>
Date: Wed, 17 Jan 2024 16:11:13 +0530
From: Sibi Sankar <quic_sibis@...cinc.com>
To: <sudeep.holla@....com>, <cristian.marussi@....com>, <rafael@...nel.org>,
<viresh.kumar@...aro.org>, <morten.rasmussen@....com>,
<dietmar.eggemann@....com>, <lukasz.luba@....com>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <quic_mdtipton@...cinc.com>,
<linux-arm-msm@...r.kernel.org>, Sibi Sankar <quic_sibis@...cinc.com>
Subject: [PATCH V2 1/4] firmware: arm_scmi: Add perf_notify_support interface
Add a new perf_notify_support interface to the existing perf_ops to export
info regarding limit/level change notification support.
Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
---
drivers/firmware/arm_scmi/perf.c | 16 ++++++++++++++++
include/linux/scmi_protocol.h | 8 ++++++++
2 files changed, 24 insertions(+)
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 211e8e0aef2c..ae7681eda276 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -962,6 +962,21 @@ scmi_power_scale_get(const struct scmi_protocol_handle *ph)
return pi->power_scale;
}
+static int scmi_notify_support(const struct scmi_protocol_handle *ph, u32 domain,
+ struct scmi_perf_notify_info *info)
+{
+ struct perf_dom_info *dom;
+
+ dom = scmi_perf_domain_lookup(ph, domain);
+ if (IS_ERR(dom))
+ return -EINVAL;
+
+ info->perf_limit_notify = dom->perf_limit_notify;
+ info->perf_level_notify = dom->perf_level_notify;
+
+ return 0;
+}
+
static const struct scmi_perf_proto_ops perf_proto_ops = {
.num_domains_get = scmi_perf_num_domains_get,
.info_get = scmi_perf_info_get,
@@ -976,6 +991,7 @@ static const struct scmi_perf_proto_ops perf_proto_ops = {
.est_power_get = scmi_dvfs_est_power_get,
.fast_switch_possible = scmi_fast_switch_possible,
.power_scale_get = scmi_power_scale_get,
+ .perf_notify_support = scmi_notify_support,
};
static int scmi_perf_set_notify_enabled(const struct scmi_protocol_handle *ph,
diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index f2f05fb42d28..b0947d004826 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -117,6 +117,11 @@ struct scmi_perf_domain_info {
bool set_perf;
};
+struct scmi_perf_notify_info {
+ bool perf_limit_notify;
+ bool perf_level_notify;
+};
+
/**
* struct scmi_perf_proto_ops - represents the various operations provided
* by SCMI Performance Protocol
@@ -139,6 +144,7 @@ struct scmi_perf_domain_info {
* for a given device
* @power_scale_mw_get: indicates if the power values provided are in milliWatts
* or in some other (abstract) scale
+ * @perf_notify_support: indicates if limit and level change notification is supported
*/
struct scmi_perf_proto_ops {
int (*num_domains_get)(const struct scmi_protocol_handle *ph);
@@ -165,6 +171,8 @@ struct scmi_perf_proto_ops {
bool (*fast_switch_possible)(const struct scmi_protocol_handle *ph,
u32 domain);
enum scmi_power_scale (*power_scale_get)(const struct scmi_protocol_handle *ph);
+ int (*perf_notify_support)(const struct scmi_protocol_handle *ph, u32 domain,
+ struct scmi_perf_notify_info *info);
};
/**
--
2.34.1
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