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Message-Id: <20210112192018.34994-13-cristian.marussi@arm.com>
Date: Tue, 12 Jan 2021 19:19:54 +0000
From: Cristian Marussi <cristian.marussi@....com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: sudeep.holla@....com, lukasz.luba@....com,
james.quinlan@...adcom.com, Jonathan.Cameron@...wei.com,
f.fainelli@...il.com, etienne.carriere@...aro.org,
thara.gopinath@...aro.org, vincent.guittot@...aro.org,
souvik.chakravarty@....com, cristian.marussi@....com
Subject: [PATCH v5 12/36] cpufreq: scmi: port driver to the new scmi_perf_proto_ops interface
Port driver to the new SCMI Perf interface based on protocol handles
and common devm_get_ops().
Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
v4 --> v5
- using renamed devm_get/put_protocol
---
drivers/cpufreq/scmi-cpufreq.c | 37 ++++++++++++++++++----------------
1 file changed, 20 insertions(+), 17 deletions(-)
diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index 491a0a24fb1e..e4c2ee3ea754 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -25,17 +25,17 @@ struct scmi_data {
struct device *cpu_dev;
};
-static const struct scmi_handle *handle;
+static struct scmi_protocol_handle *ph;
+static const struct scmi_perf_proto_ops *perf_ops;
static unsigned int scmi_cpufreq_get_rate(unsigned int cpu)
{
struct cpufreq_policy *policy = cpufreq_cpu_get_raw(cpu);
- const struct scmi_perf_ops *perf_ops = handle->perf_ops;
struct scmi_data *priv = policy->driver_data;
unsigned long rate;
int ret;
- ret = perf_ops->freq_get(handle, priv->domain_id, &rate, false);
+ ret = perf_ops->freq_get(ph, priv->domain_id, &rate, false);
if (ret)
return 0;
return rate / 1000;
@@ -50,19 +50,17 @@ static int
scmi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct scmi_data *priv = policy->driver_data;
- const struct scmi_perf_ops *perf_ops = handle->perf_ops;
u64 freq = policy->freq_table[index].frequency;
- return perf_ops->freq_set(handle, priv->domain_id, freq * 1000, false);
+ return perf_ops->freq_set(ph, priv->domain_id, freq * 1000, false);
}
static unsigned int scmi_cpufreq_fast_switch(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct scmi_data *priv = policy->driver_data;
- const struct scmi_perf_ops *perf_ops = handle->perf_ops;
- if (!perf_ops->freq_set(handle, priv->domain_id,
+ if (!perf_ops->freq_set(ph, priv->domain_id,
target_freq * 1000, true))
return target_freq;
@@ -75,7 +73,7 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
int cpu, domain, tdomain;
struct device *tcpu_dev;
- domain = handle->perf_ops->device_domain_id(cpu_dev);
+ domain = perf_ops->device_domain_id(cpu_dev);
if (domain < 0)
return domain;
@@ -87,7 +85,7 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
if (!tcpu_dev)
continue;
- tdomain = handle->perf_ops->device_domain_id(tcpu_dev);
+ tdomain = perf_ops->device_domain_id(tcpu_dev);
if (tdomain == domain)
cpumask_set_cpu(cpu, cpumask);
}
@@ -102,13 +100,13 @@ scmi_get_cpu_power(unsigned long *power, unsigned long *KHz,
unsigned long Hz;
int ret, domain;
- domain = handle->perf_ops->device_domain_id(cpu_dev);
+ domain = perf_ops->device_domain_id(cpu_dev);
if (domain < 0)
return domain;
/* Get the power cost of the performance domain. */
Hz = *KHz * 1000;
- ret = handle->perf_ops->est_power_get(handle, domain, &Hz, power);
+ ret = perf_ops->est_power_get(ph, domain, &Hz, power);
if (ret)
return ret;
@@ -134,7 +132,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
return -ENODEV;
}
- ret = handle->perf_ops->device_opps_add(handle, cpu_dev);
+ ret = perf_ops->device_opps_add(ph, cpu_dev);
if (ret) {
dev_warn(cpu_dev, "failed to add opps to the device\n");
return ret;
@@ -173,7 +171,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
}
priv->cpu_dev = cpu_dev;
- priv->domain_id = handle->perf_ops->device_domain_id(cpu_dev);
+ priv->domain_id = perf_ops->device_domain_id(cpu_dev);
policy->driver_data = priv;
policy->freq_table = freq_table;
@@ -181,16 +179,16 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
/* SCMI allows DVFS request for any domain from any CPU */
policy->dvfs_possible_from_any_cpu = true;
- latency = handle->perf_ops->transition_latency_get(handle, cpu_dev);
+ latency = perf_ops->transition_latency_get(ph, cpu_dev);
if (!latency)
latency = CPUFREQ_ETERNAL;
policy->cpuinfo.transition_latency = latency;
policy->fast_switch_possible =
- handle->perf_ops->fast_switch_possible(handle, cpu_dev);
+ perf_ops->fast_switch_possible(ph, cpu_dev);
- power_scale_mw = handle->perf_ops->power_scale_mw_get(handle);
+ power_scale_mw = perf_ops->power_scale_mw_get(ph);
em_dev_register_perf_domain(cpu_dev, nr_opp, &em_cb, policy->cpus,
power_scale_mw);
@@ -233,12 +231,17 @@ static int scmi_cpufreq_probe(struct scmi_device *sdev)
{
int ret;
struct device *dev = &sdev->dev;
+ const struct scmi_handle *handle;
handle = sdev->handle;
- if (!handle || !handle->perf_ops)
+ if (!handle)
return -ENODEV;
+ perf_ops = handle->devm_get_protocol(sdev, SCMI_PROTOCOL_PERF, &ph);
+ if (IS_ERR(perf_ops))
+ return PTR_ERR(perf_ops);
+
#ifdef CONFIG_COMMON_CLK
/* dummy clock provider as needed by OPP if clocks property is used */
if (of_find_property(dev->of_node, "#clock-cells", NULL))
--
2.17.1
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