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Date: Wed, 1 Jul 2020 10:07:46 +0100
From: Ionela Voinescu <ionela.voinescu@....com>
To: rjw@...ysocki.net, viresh.kumar@...aro.org,
catalin.marinas@....com, sudeep.holla@....com, will@...nel.org,
linux@...linux.org.uk, valentin.schneider@....com
Cc: mingo@...hat.com, peterz@...radead.org, dietmar.eggemann@....com,
ionela.voinescu@....com, linux-pm@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/8] cpufreq,drivers: remove setting of frequency scale factor
As a result of setting the frequency scale factor in cpufreq core, after
callbacks that lend themselves to trigger it, remove this functionality
from the driver side.
For these drivers, the CPUFREQ_CUSTOM_SET_FREQ_SCALE flag is also removed,
to enable the use of the generic code on the cpufreq core side.
Signed-off-by: Ionela Voinescu <ionela.voinescu@....com>
Cc: Rafael J. Wysocki <rjw@...ysocki.net>
Cc: Viresh Kumar <viresh.kumar@...aro.org>
---
drivers/cpufreq/cpufreq-dt.c | 13 ++-----------
drivers/cpufreq/qcom-cpufreq-hw.c | 12 ++----------
drivers/cpufreq/scmi-cpufreq.c | 21 ++++++---------------
drivers/cpufreq/scpi-cpufreq.c | 6 +-----
4 files changed, 11 insertions(+), 41 deletions(-)
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 8e0571a49d1e..9fd4ce774f12 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -40,16 +40,8 @@ static int set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct private_data *priv = policy->driver_data;
unsigned long freq = policy->freq_table[index].frequency;
- int ret;
-
- ret = dev_pm_opp_set_rate(priv->cpu_dev, freq * 1000);
- if (!ret) {
- arch_set_freq_scale(policy->related_cpus, freq,
- policy->cpuinfo.max_freq);
- }
-
- return ret;
+ return dev_pm_opp_set_rate(priv->cpu_dev, freq * 1000);
}
/*
@@ -331,8 +323,7 @@ static int cpufreq_exit(struct cpufreq_policy *policy)
static struct cpufreq_driver dt_cpufreq_driver = {
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK |
- CPUFREQ_IS_COOLING_DEV |
- CPUFREQ_CUSTOM_SET_FREQ_SCALE,
+ CPUFREQ_IS_COOLING_DEV,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = set_target,
.get = cpufreq_generic_get,
diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index e13780beb373..e5d1ee7746a4 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -85,8 +85,6 @@ static int qcom_cpufreq_hw_target_index(struct cpufreq_policy *policy,
if (icc_scaling_enabled)
qcom_cpufreq_set_bw(policy, freq);
- arch_set_freq_scale(policy->related_cpus, freq,
- policy->cpuinfo.max_freq);
return 0;
}
@@ -113,7 +111,6 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
{
void __iomem *perf_state_reg = policy->driver_data;
int index;
- unsigned long freq;
index = policy->cached_resolved_idx;
if (index < 0)
@@ -121,11 +118,7 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
writel_relaxed(index, perf_state_reg);
- freq = policy->freq_table[index].frequency;
- arch_set_freq_scale(policy->related_cpus, freq,
- policy->cpuinfo.max_freq);
-
- return freq;
+ return policy->freq_table[index].frequency;
}
static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
@@ -337,8 +330,7 @@ static struct freq_attr *qcom_cpufreq_hw_attr[] = {
static struct cpufreq_driver cpufreq_qcom_hw_driver = {
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK |
CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
- CPUFREQ_IS_COOLING_DEV |
- CPUFREQ_CUSTOM_SET_FREQ_SCALE,
+ CPUFREQ_IS_COOLING_DEV,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = qcom_cpufreq_hw_target_index,
.get = qcom_cpufreq_hw_get,
diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index 16ab4ecc75e4..a91a45c90274 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -48,16 +48,11 @@ static unsigned int scmi_cpufreq_get_rate(unsigned int cpu)
static int
scmi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
{
- int ret;
struct scmi_data *priv = policy->driver_data;
struct scmi_perf_ops *perf_ops = handle->perf_ops;
u64 freq = policy->freq_table[index].frequency;
- ret = perf_ops->freq_set(handle, priv->domain_id, freq * 1000, false);
- if (!ret)
- arch_set_freq_scale(policy->related_cpus, freq,
- policy->cpuinfo.max_freq);
- return ret;
+ return perf_ops->freq_set(handle, priv->domain_id, freq * 1000, false);
}
static unsigned int scmi_cpufreq_fast_switch(struct cpufreq_policy *policy,
@@ -66,14 +61,11 @@ static unsigned int scmi_cpufreq_fast_switch(struct cpufreq_policy *policy,
struct scmi_data *priv = policy->driver_data;
struct scmi_perf_ops *perf_ops = handle->perf_ops;
- if (!perf_ops->freq_set(handle, priv->domain_id,
- target_freq * 1000, true)) {
- arch_set_freq_scale(policy->related_cpus, target_freq,
- policy->cpuinfo.max_freq);
- return target_freq;
- }
+ if (perf_ops->freq_set(handle, priv->domain_id,
+ target_freq * 1000, true))
+ return 0;
- return 0;
+ return target_freq;
}
static int
@@ -223,8 +215,7 @@ static struct cpufreq_driver scmi_cpufreq_driver = {
.name = "scmi",
.flags = CPUFREQ_STICKY | CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
CPUFREQ_NEED_INITIAL_FREQ_CHECK |
- CPUFREQ_IS_COOLING_DEV |
- CPUFREQ_CUSTOM_SET_FREQ_SCALE,
+ CPUFREQ_IS_COOLING_DEV,
.verify = cpufreq_generic_frequency_table_verify,
.attr = cpufreq_generic_attr,
.target_index = scmi_cpufreq_set_target,
diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index 6b5f56dc3ca3..5a399fb847b9 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -60,9 +60,6 @@ scpi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
if (clk_get_rate(priv->clk) != rate)
return -EIO;
- arch_set_freq_scale(policy->related_cpus, freq,
- policy->cpuinfo.max_freq);
-
return 0;
}
@@ -197,8 +194,7 @@ static struct cpufreq_driver scpi_cpufreq_driver = {
.name = "scpi-cpufreq",
.flags = CPUFREQ_STICKY | CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
CPUFREQ_NEED_INITIAL_FREQ_CHECK |
- CPUFREQ_IS_COOLING_DEV |
- CPUFREQ_CUSTOM_SET_FREQ_SCALE,
+ CPUFREQ_IS_COOLING_DEV,
.verify = cpufreq_generic_frequency_table_verify,
.attr = cpufreq_generic_attr,
.get = scpi_cpufreq_get_rate,
--
2.17.1
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