[PATCH V3 2/2] cpufreq: scmi: Enable boost support

From: Sibi Sankar <quic_sibis@quicinc.com>
To: <sudeep.holla@arm.com>, <cristian.marussi@arm.com>,
	<rafael@kernel.org>, <viresh.kumar@linaro.org>,
	<morten.rasmussen@arm.com>, <dietmar.eggemann@arm.com>,
	<lukasz.luba@arm.com>, <sboyd@kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<quic_mdtipton@quicinc.com>, <linux-arm-msm@vger.kernel.org>,
	<nm@ti.com>, Sibi Sankar <quic_sibis@quicinc.com>
Subject: [PATCH V3 2/2] cpufreq: scmi: Enable boost support
Date: Fri, 8 Mar 2024 16:14:10 +0530	[thread overview]
Message-ID: <20240308104410.385631-3-quic_sibis@quicinc.com> (raw)
In-Reply-To: <20240308104410.385631-1-quic_sibis@quicinc.com>

The X1E80100 SoC hosts a number of cpu boost frequencies, so let's enable
boost support if the freq_table has any opps marked as turbo in it.

Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
---

v3:
* Don't set per-policy boost flags from the cpufreq driver. [Viresh]

 drivers/cpufreq/scmi-cpufreq.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index 0b483bd0d3ca..3b4f6bfb2f4c 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -30,6 +30,7 @@ struct scmi_data {
 
 static struct scmi_protocol_handle *ph;
 static const struct scmi_perf_proto_ops *perf_ops;
+static struct cpufreq_driver scmi_cpufreq_driver;
 
 static unsigned int scmi_cpufreq_get_rate(unsigned int cpu)
 {
@@ -167,6 +168,12 @@ scmi_get_rate_limit(u32 domain, bool has_fast_switch)
 	return rate_limit;
 }
 
+static struct freq_attr *scmi_cpufreq_hw_attr[] = {
+	&cpufreq_freq_attr_scaling_available_freqs,
+	NULL,
+	NULL,
+};
+
 static int scmi_cpufreq_init(struct cpufreq_policy *policy)
 {
 	int ret, nr_opp, domain;
@@ -276,6 +283,17 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
 	policy->transition_delay_us =
 		scmi_get_rate_limit(domain, policy->fast_switch_possible);
 
+	if (policy_has_boost_freq(policy)) {
+		ret = cpufreq_enable_boost_support();
+		if (ret) {
+			dev_warn(cpu_dev, "failed to enable boost: %d\n", ret);
+			goto out_free_opp;
+		} else {
+			scmi_cpufreq_hw_attr[1] = &cpufreq_freq_attr_scaling_boost_freqs;
+			scmi_cpufreq_driver.boost_enabled = true;
+		}
+	}
+
 	return 0;
 
 out_free_opp:
@@ -334,7 +352,7 @@ static struct cpufreq_driver scmi_cpufreq_driver = {
 		  CPUFREQ_NEED_INITIAL_FREQ_CHECK |
 		  CPUFREQ_IS_COOLING_DEV,
 	.verify	= cpufreq_generic_frequency_table_verify,
-	.attr	= cpufreq_generic_attr,
+	.attr	= scmi_cpufreq_hw_attr,
 	.target_index	= scmi_cpufreq_set_target,
 	.fast_switch	= scmi_cpufreq_fast_switch,
 	.get	= scmi_cpufreq_get_rate,
-- 
2.34.1

