linux-kernel - [PATCH 2/3] firmware: arm_scmi: Add support for marking certain frequencies as boost

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Date: Wed, 17 Jan 2024 16:34:42 +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>, <sboyd@...nel.org>
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>, <nm@...com>,
        Sibi Sankar
	<quic_sibis@...cinc.com>
Subject: [PATCH 2/3] firmware: arm_scmi: Add support for marking certain frequencies as boost

All opps above the sustained level/frequency are treated as boost, so mark
them accordingly.

Suggested-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
---
 drivers/firmware/arm_scmi/perf.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index e286f04ee6e3..d3fb8c804b3d 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -811,7 +811,7 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph,
 				     struct device *dev, u32 domain)
 {
 	int idx, ret;
-	unsigned long freq;
+	unsigned long freq, sustained_freq;
 	struct dev_pm_opp_data data = {};
 	struct perf_dom_info *dom;
 
@@ -819,12 +819,21 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph,
 	if (IS_ERR(dom))
 		return PTR_ERR(dom);
 
+	if (!dom->level_indexing_mode)
+		sustained_freq = dom->sustained_perf_level * dom->mult_factor;
+	else
+		sustained_freq = dom->sustained_freq_khz * dom->mult_factor;
+
 	for (idx = 0; idx < dom->opp_count; idx++) {
 		if (!dom->level_indexing_mode)
 			freq = dom->opp[idx].perf * dom->mult_factor;
 		else
 			freq = dom->opp[idx].indicative_freq * dom->mult_factor;
 
+		/* All opps above the sustained level/frequency are treated as boost */
+		if (sustained_freq && freq > sustained_freq)
+			data.turbo = true;
+
 		data.level = dom->opp[idx].perf;
 		data.freq = freq;
 
-- 
2.34.1