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Message-Id: <bbd8f1e7508a9c66028ea1d80fd86924256fdb64.1656935522.git.viresh.kumar@linaro.org>
Date: Mon, 4 Jul 2022 17:37:53 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Yangtao Li <tiny.windzz@...il.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>,
Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>
Cc: linux-pm@...r.kernel.org,
Vincent Guittot <vincent.guittot@...aro.org>,
linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: [PATCH V3 15/20] OPP: Migrate set-prop-name helper API to use set-config helpers
Now that we have a central API to handle all OPP table configurations,
migrate the set-prop-name family of helpers to use the new
infrastructure.
The return type and parameter to the APIs change a bit due to this,
update the current users as well in the same commit in order to avoid
breaking builds.
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
drivers/cpufreq/sun50i-cpufreq-nvmem.c | 31 +++++++--------
drivers/opp/core.c | 55 +++++++++-----------------
include/linux/pm_opp.h | 23 ++++++-----
3 files changed, 46 insertions(+), 63 deletions(-)
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
index 75e1bf3a08f7..a4922580ce06 100644
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -86,20 +86,20 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
{
- struct opp_table **opp_tables;
+ int *opp_tokens;
char name[MAX_NAME_LEN];
unsigned int cpu;
u32 speed = 0;
int ret;
- opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables),
+ opp_tokens = kcalloc(num_possible_cpus(), sizeof(*opp_tokens),
GFP_KERNEL);
- if (!opp_tables)
+ if (!opp_tokens)
return -ENOMEM;
ret = sun50i_cpufreq_get_efuse(&speed);
if (ret) {
- kfree(opp_tables);
+ kfree(opp_tokens);
return ret;
}
@@ -113,9 +113,9 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
goto free_opp;
}
- opp_tables[cpu] = dev_pm_opp_set_prop_name(cpu_dev, name);
- if (IS_ERR(opp_tables[cpu])) {
- ret = PTR_ERR(opp_tables[cpu]);
+ opp_tokens[cpu] = dev_pm_opp_set_prop_name(cpu_dev, name);
+ if (opp_tokens[cpu] < 0) {
+ ret = opp_tokens[cpu];
pr_err("Failed to set prop name\n");
goto free_opp;
}
@@ -124,7 +124,7 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,
NULL, 0);
if (!IS_ERR(cpufreq_dt_pdev)) {
- platform_set_drvdata(pdev, opp_tables);
+ platform_set_drvdata(pdev, opp_tokens);
return 0;
}
@@ -132,27 +132,24 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
pr_err("Failed to register platform device\n");
free_opp:
- for_each_possible_cpu(cpu) {
- if (IS_ERR_OR_NULL(opp_tables[cpu]))
- break;
- dev_pm_opp_put_prop_name(opp_tables[cpu]);
- }
- kfree(opp_tables);
+ for_each_possible_cpu(cpu)
+ dev_pm_opp_put_prop_name(opp_tokens[cpu]);
+ kfree(opp_tokens);
return ret;
}
static int sun50i_cpufreq_nvmem_remove(struct platform_device *pdev)
{
- struct opp_table **opp_tables = platform_get_drvdata(pdev);
+ int *opp_tokens = platform_get_drvdata(pdev);
unsigned int cpu;
platform_device_unregister(cpufreq_dt_pdev);
for_each_possible_cpu(cpu)
- dev_pm_opp_put_prop_name(opp_tables[cpu]);
+ dev_pm_opp_put_prop_name(opp_tokens[cpu]);
- kfree(opp_tables);
+ kfree(opp_tokens);
return 0;
}
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 458584994c2b..1745e25c1eaf 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1997,7 +1997,7 @@ static void _opp_put_supported_hw(struct opp_table *opp_table)
}
/**
- * dev_pm_opp_set_prop_name() - Set prop-extn name
+ * _opp_set_prop_name() - Set prop-extn name
* @dev: Device for which the prop-name has to be set.
* @name: name to postfix to properties.
*
@@ -2006,50 +2006,33 @@ static void _opp_put_supported_hw(struct opp_table *opp_table)
* which the extension will apply are opp-microvolt and opp-microamp. OPP core
* should postfix the property name with -<name> while looking for them.
*/
-struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
+static int _opp_set_prop_name(struct opp_table *opp_table, const char *name)
{
- struct opp_table *opp_table;
-
- opp_table = _add_opp_table(dev, false);
- if (IS_ERR(opp_table))
- return opp_table;
-
- /* Make sure there are no concurrent readers while updating opp_table */
- WARN_ON(!list_empty(&opp_table->opp_list));
-
/* Another CPU that shares the OPP table has set the property ? */
- if (opp_table->prop_name)
- return opp_table;
-
- opp_table->prop_name = kstrdup(name, GFP_KERNEL);
if (!opp_table->prop_name) {
- dev_pm_opp_put_opp_table(opp_table);
- return ERR_PTR(-ENOMEM);
+ opp_table->prop_name = kstrdup(name, GFP_KERNEL);
+ if (!opp_table->prop_name)
+ return -ENOMEM;
}
- return opp_table;
+ return 0;
}
-EXPORT_SYMBOL_GPL(dev_pm_opp_set_prop_name);
/**
- * dev_pm_opp_put_prop_name() - Releases resources blocked for prop-name
- * @opp_table: OPP table returned by dev_pm_opp_set_prop_name().
+ * _opp_put_prop_name() - Releases resources blocked for prop-name
+ * @opp_table: OPP table returned by _opp_set_prop_name().
*
* This is required only for the V2 bindings, and is called for a matching
- * dev_pm_opp_set_prop_name(). Until this is called, the opp_table structure
+ * _opp_set_prop_name(). Until this is called, the opp_table structure
* will not be freed.
*/
-void dev_pm_opp_put_prop_name(struct opp_table *opp_table)
+static void _opp_put_prop_name(struct opp_table *opp_table)
{
- if (unlikely(!opp_table))
- return;
-
- kfree(opp_table->prop_name);
- opp_table->prop_name = NULL;
-
- dev_pm_opp_put_opp_table(opp_table);
+ if (opp_table->prop_name) {
+ kfree(opp_table->prop_name);
+ opp_table->prop_name = NULL;
+ }
}
-EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
/**
* _opp_set_regulators() - Set regulator names for the device
@@ -2414,7 +2397,7 @@ static void _opp_clear_config(struct opp_config_data *data)
if (data->flags & OPP_CONFIG_REGULATOR_HELPER)
_opp_unregister_set_opp_helper(data->opp_table);
if (data->flags & OPP_CONFIG_PROP_NAME)
- dev_pm_opp_put_prop_name(data->opp_table);
+ _opp_put_prop_name(data->opp_table);
if (data->flags & OPP_CONFIG_CLK)
_opp_put_clknames(data->opp_table);
@@ -2441,7 +2424,7 @@ static void _opp_clear_config(struct opp_config_data *data)
*/
int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
{
- struct opp_table *opp_table, *err;
+ struct opp_table *opp_table;
struct opp_config_data *data;
unsigned int id;
int ret;
@@ -2476,11 +2459,9 @@ int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
/* Configure property names */
if (config->prop_name) {
- err = dev_pm_opp_set_prop_name(dev, config->prop_name);
- if (IS_ERR(err)) {
- ret = PTR_ERR(err);
+ ret = _opp_set_prop_name(opp_table, config->prop_name);
+ if (ret)
goto err;
- }
data->flags |= OPP_CONFIG_PROP_NAME;
}
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 20e1e5060a8a..f995ca1406e8 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -184,8 +184,6 @@ int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config);
int devm_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config);
void dev_pm_opp_clear_config(int token);
-struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name);
-void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table, struct opp_table *dst_table, struct dev_pm_opp *src_opp);
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
@@ -357,13 +355,6 @@ static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct noti
return -EOPNOTSUPP;
}
-static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
-{
- return ERR_PTR(-EOPNOTSUPP);
-}
-
-static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {}
-
static inline int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
{
return -EOPNOTSUPP;
@@ -652,5 +643,19 @@ static inline int devm_pm_opp_attach_genpd(struct device *dev,
return devm_pm_opp_set_config(dev, &config);
}
+/* prop-name helpers */
+static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
+{
+ struct dev_pm_opp_config config = {
+ .prop_name = name,
+ };
+
+ return dev_pm_opp_set_config(dev, &config);
+}
+
+static inline void dev_pm_opp_put_prop_name(int token)
+{
+ dev_pm_opp_clear_config(token);
+}
#endif /* __LINUX_OPP_H__ */
--
2.31.1.272.g89b43f80a514
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