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Merge branch 'pm-opp'

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* pm-opp:
  cpufreq: OMAP: Register an Energy Model
  cpufreq: imx6q: Register an Energy Model
  opp: no need to check return value of debugfs_create functions
  cpufreq: mediatek: Register an Energy Model
  cpufreq: scmi: Register an Energy Model
  cpufreq: arm_big_little: Register an Energy Model
  cpufreq: scpi: Register an Energy Model
  cpufreq: dt: Register an Energy Model
This commit is contained in:
Rafael J. Wysocki 2019-03-04 11:19:14 +01:00
commit 1271d6d576
10 changed files with 87 additions and 102 deletions
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2
drivers/cpufreq/arm_big_little.c
View File

@ -487,6 +487,8 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency =
arm_bL_ops->get_transition_latency(cpu_dev);
dev_pm_opp_of_register_em(policy->cpus);
if (is_bL_switching_enabled())
per_cpu(cpu_last_req_freq, policy->cpu) = clk_get_cpu_rate(policy->cpu);

2
drivers/cpufreq/cpufreq-dt.c
View File

@ -278,6 +278,8 @@ static int cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = transition_latency;
policy->dvfs_possible_from_any_cpu = true;
dev_pm_opp_of_register_em(policy->cpus);
return 0;
out_free_cpufreq_table:

1
drivers/cpufreq/imx6q-cpufreq.c
View File

@ -198,6 +198,7 @@ static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
policy->clk = clks[ARM].clk;
ret = cpufreq_generic_init(policy, freq_table, transition_latency);
policy->suspend_freq = max_freq;
dev_pm_opp_of_register_em(policy->cpus);
return ret;
}

2
drivers/cpufreq/mediatek-cpufreq.c
View File

@ -456,6 +456,8 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy)
policy->driver_data = info;
policy->clk = info->cpu_clk;
dev_pm_opp_of_register_em(policy->cpus);
return 0;
}

4
drivers/cpufreq/omap-cpufreq.c
View File

@ -133,8 +133,10 @@ static int omap_cpu_init(struct cpufreq_policy *policy)
/* FIXME: what's the actual transition time? */
result = cpufreq_generic_init(policy, freq_table, 300 * 1000);
if (!result)
if (!result) {
dev_pm_opp_of_register_em(policy->cpus);
return 0;
}
freq_table_free();
fail:

39
drivers/cpufreq/scmi-cpufreq.c
View File

@ -11,6 +11,7 @@
#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/cpumask.h>
#include <linux/energy_model.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/pm_opp.h>
@ -101,13 +102,42 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
return 0;
}
static int __maybe_unused
scmi_get_cpu_power(unsigned long *power, unsigned long *KHz, int cpu)
{
struct device *cpu_dev = get_cpu_device(cpu);
unsigned long Hz;
int ret, domain;
if (!cpu_dev) {
pr_err("failed to get cpu%d device\n", cpu);
return -ENODEV;
}
domain = handle->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);
if (ret)
return ret;
/* The EM framework specifies the frequency in KHz. */
*KHz = Hz / 1000;
return 0;
}
static int scmi_cpufreq_init(struct cpufreq_policy *policy)
{
int ret;
int ret, nr_opp;
unsigned int latency;
struct device *cpu_dev;
struct scmi_data *priv;
struct cpufreq_frequency_table *freq_table;
struct em_data_callback em_cb = EM_DATA_CB(scmi_get_cpu_power);
cpu_dev = get_cpu_device(policy->cpu);
if (!cpu_dev) {
@ -134,8 +164,8 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
return ret;
}
ret = dev_pm_opp_get_opp_count(cpu_dev);
if (ret <= 0) {
nr_opp = dev_pm_opp_get_opp_count(cpu_dev);
if (nr_opp <= 0) {
dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n");
ret = -EPROBE_DEFER;
goto out_free_opp;
@ -169,6 +199,9 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = latency;
policy->fast_switch_possible = true;
em_register_perf_domain(policy->cpus, nr_opp, &em_cb);
return 0;
out_free_priv:

3
drivers/cpufreq/scpi-cpufreq.c
View File

@ -168,6 +168,9 @@ static int scpi_cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = latency;
policy->fast_switch_possible = false;
dev_pm_opp_of_register_em(policy->cpus);
return 0;
out_free_cpufreq_table:

11
drivers/opp/core.c
View File

@ -792,7 +792,6 @@ static struct opp_device *_add_opp_dev_unlocked(const struct device *dev,
struct opp_table *opp_table)
{
struct opp_device *opp_dev;
int ret;
opp_dev = kzalloc(sizeof(*opp_dev), GFP_KERNEL);
if (!opp_dev)
@ -804,10 +803,7 @@ static struct opp_device *_add_opp_dev_unlocked(const struct device *dev,
list_add(&opp_dev->node, &opp_table->dev_list);
/* Create debugfs entries for the opp_table */
ret = opp_debug_register(opp_dev, opp_table);
if (ret)
dev_err(dev, "%s: Failed to register opp debugfs (%d)\n",
__func__, ret);
opp_debug_register(opp_dev, opp_table);
return opp_dev;
}
@ -1228,10 +1224,7 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
new_opp->opp_table = opp_table;
kref_init(&new_opp->kref);
ret = opp_debug_create_one(new_opp, opp_table);
if (ret)
dev_err(dev, "%s: Failed to register opp to debugfs (%d)\n",
__func__, ret);
opp_debug_create_one(new_opp, opp_table);
if (!_opp_supported_by_regulators(new_opp, opp_table)) {
new_opp->available = false;

110
drivers/opp/debugfs.c
View File

@ -35,7 +35,7 @@ void opp_debug_remove_one(struct dev_pm_opp *opp)
debugfs_remove_recursive(opp->dentry);
}
static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
static void opp_debug_create_supplies(struct dev_pm_opp *opp,
struct opp_table *opp_table,
struct dentry *pdentry)
{
@ -50,30 +50,21 @@ static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
/* Create per-opp directory */
d = debugfs_create_dir(name, pdentry);
if (!d)
return false;
debugfs_create_ulong("u_volt_target", S_IRUGO, d,
&opp->supplies[i].u_volt);
if (!debugfs_create_ulong("u_volt_target", S_IRUGO, d,
&opp->supplies[i].u_volt))
return false;
debugfs_create_ulong("u_volt_min", S_IRUGO, d,
&opp->supplies[i].u_volt_min);
if (!debugfs_create_ulong("u_volt_min", S_IRUGO, d,
&opp->supplies[i].u_volt_min))
return false;
debugfs_create_ulong("u_volt_max", S_IRUGO, d,
&opp->supplies[i].u_volt_max);
if (!debugfs_create_ulong("u_volt_max", S_IRUGO, d,
&opp->supplies[i].u_volt_max))
return false;
if (!debugfs_create_ulong("u_amp", S_IRUGO, d,
&opp->supplies[i].u_amp))
return false;
debugfs_create_ulong("u_amp", S_IRUGO, d,
&opp->supplies[i].u_amp);
}
return true;
}
int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
{
struct dentry *pdentry = opp_table->dentry;
struct dentry *d;
@ -95,40 +86,23 @@ int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
/* Create per-opp directory */
d = debugfs_create_dir(name, pdentry);
if (!d)
return -ENOMEM;
if (!debugfs_create_bool("available", S_IRUGO, d, &opp->available))
return -ENOMEM;
debugfs_create_bool("available", S_IRUGO, d, &opp->available);
debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic);
debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo);
debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend);
debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate);
debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate);
debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
&opp->clock_latency_ns);
if (!debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic))
return -ENOMEM;
if (!debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo))
return -ENOMEM;
if (!debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend))
return -ENOMEM;
if (!debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate))
return -ENOMEM;
if (!debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate))
return -ENOMEM;
if (!opp_debug_create_supplies(opp, opp_table, d))
return -ENOMEM;
if (!debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
&opp->clock_latency_ns))
return -ENOMEM;
opp_debug_create_supplies(opp, opp_table, d);
opp->dentry = d;
return 0;
}
static int opp_list_debug_create_dir(struct opp_device *opp_dev,
struct opp_table *opp_table)
static void opp_list_debug_create_dir(struct opp_device *opp_dev,
struct opp_table *opp_table)
{
const struct device *dev = opp_dev->dev;
struct dentry *d;
@ -137,36 +111,21 @@ static int opp_list_debug_create_dir(struct opp_device *opp_dev,
/* Create device specific directory */
d = debugfs_create_dir(opp_table->dentry_name, rootdir);
if (!d) {
dev_err(dev, "%s: Failed to create debugfs dir\n", __func__);
return -ENOMEM;
}
opp_dev->dentry = d;
opp_table->dentry = d;
return 0;
}
static int opp_list_debug_create_link(struct opp_device *opp_dev,
struct opp_table *opp_table)
static void opp_list_debug_create_link(struct opp_device *opp_dev,
struct opp_table *opp_table)
{
const struct device *dev = opp_dev->dev;
char name[NAME_MAX];
struct dentry *d;
opp_set_dev_name(opp_dev->dev, name);
/* Create device specific directory link */
d = debugfs_create_symlink(name, rootdir, opp_table->dentry_name);
if (!d) {
dev_err(dev, "%s: Failed to create link\n", __func__);
return -ENOMEM;
}
opp_dev->dentry = d;
return 0;
opp_dev->dentry = debugfs_create_symlink(name, rootdir,
opp_table->dentry_name);
}
/**
@ -177,20 +136,13 @@ static int opp_list_debug_create_link(struct opp_device *opp_dev,
* Dynamically adds device specific directory in debugfs 'opp' directory. If the
* device-opp is shared with other devices, then links will be created for all
* devices except the first.
*
* Return: 0 on success, otherwise negative error.
*/
int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
{
if (!rootdir) {
pr_debug("%s: Uninitialized rootdir\n", __func__);
return -EINVAL;
}
if (opp_table->dentry)
return opp_list_debug_create_link(opp_dev, opp_table);
return opp_list_debug_create_dir(opp_dev, opp_table);
opp_list_debug_create_link(opp_dev, opp_table);
else
opp_list_debug_create_dir(opp_dev, opp_table);
}
static void opp_migrate_dentry(struct opp_device *opp_dev,
@ -252,10 +204,6 @@ static int __init opp_debug_init(void)
{
/* Create /sys/kernel/debug/opp directory */
rootdir = debugfs_create_dir("opp", NULL);
if (!rootdir) {
pr_err("%s: Failed to create root directory\n", __func__);
return -ENOMEM;
}
return 0;
}

15
drivers/opp/opp.h
View File

@ -236,18 +236,17 @@ static inline void _of_opp_free_required_opps(struct opp_table *opp_table,
#ifdef CONFIG_DEBUG_FS
void opp_debug_remove_one(struct dev_pm_opp *opp);
int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
void opp_debug_unregister(struct opp_device *opp_dev, struct opp_table *opp_table);
#else
static inline void opp_debug_remove_one(struct dev_pm_opp *opp) {}
static inline int opp_debug_create_one(struct dev_pm_opp *opp,
struct opp_table *opp_table)
{ return 0; }
static inline int opp_debug_register(struct opp_device *opp_dev,
struct opp_table *opp_table)
{ return 0; }
static inline void opp_debug_create_one(struct dev_pm_opp *opp,
struct opp_table *opp_table) { }
static inline void opp_debug_register(struct opp_device *opp_dev,
struct opp_table *opp_table) { }
static inline void opp_debug_unregister(struct opp_device *opp_dev,
struct opp_table *opp_table)