@@ -29,9 +29,9 @@ struct private_data {
cpumask_var_t cpus;
struct device *cpu_dev;
- struct opp_table *opp_table;
struct cpufreq_frequency_table *freq_table;
bool have_static_opps;
+ int opp_token;
};
static LIST_HEAD(priv_list);
@@ -220,9 +220,9 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu)
*/
reg_name[0] = find_supply_name(cpu_dev);
if (reg_name[0]) {
- priv->opp_table = dev_pm_opp_set_regulators(cpu_dev, reg_name);
- if (IS_ERR(priv->opp_table)) {
- ret = PTR_ERR(priv->opp_table);
+ priv->opp_token = dev_pm_opp_set_regulators(cpu_dev, reg_name);
+ if (priv->opp_token < 0) {
+ ret = priv->opp_token;
if (ret != -EPROBE_DEFER)
dev_err(cpu_dev, "failed to set regulators: %d\n",
ret);
@@ -294,7 +294,7 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu)
out:
if (priv->have_static_opps)
dev_pm_opp_of_cpumask_remove_table(priv->cpus);
- dev_pm_opp_put_regulators(priv->opp_table);
+ dev_pm_opp_put_regulators(priv->opp_token);
free_cpumask:
free_cpumask_var(priv->cpus);
return ret;
@@ -308,7 +308,7 @@ static void dt_cpufreq_release(void)
dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &priv->freq_table);
if (priv->have_static_opps)
dev_pm_opp_of_cpumask_remove_table(priv->cpus);
- dev_pm_opp_put_regulators(priv->opp_table);
+ dev_pm_opp_put_regulators(priv->opp_token);
free_cpumask_var(priv->cpus);
list_del(&priv->node);
}
@@ -33,7 +33,7 @@ struct exynos_bus {
unsigned long curr_freq;
- struct opp_table *opp_table;
+ int opp_token;
struct clk *clk;
unsigned int ratio;
};
@@ -161,8 +161,7 @@ static void exynos_bus_exit(struct device *dev)
dev_pm_opp_of_remove_table(dev);
clk_disable_unprepare(bus->clk);
- dev_pm_opp_put_regulators(bus->opp_table);
- bus->opp_table = NULL;
+ dev_pm_opp_put_regulators(bus->opp_token);
}
static void exynos_bus_passive_exit(struct device *dev)
@@ -179,18 +178,16 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
struct exynos_bus *bus)
{
struct device *dev = bus->dev;
- struct opp_table *opp_table;
const char *supplies[] = { "vdd", NULL };
int i, ret, count, size;
- opp_table = dev_pm_opp_set_regulators(dev, supplies);
- if (IS_ERR(opp_table)) {
- ret = PTR_ERR(opp_table);
+ ret = dev_pm_opp_set_regulators(dev, supplies);
+ if (ret < 0) {
dev_err(dev, "failed to set regulators %d\n", ret);
return ret;
}
- bus->opp_table = opp_table;
+ bus->opp_token = ret;
/*
* Get the devfreq-event devices to get the current utilization of
@@ -236,8 +233,7 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
return 0;
err_regulator:
- dev_pm_opp_put_regulators(bus->opp_table);
- bus->opp_table = NULL;
+ dev_pm_opp_put_regulators(bus->opp_token);
return ret;
}
@@ -459,8 +455,7 @@ static int exynos_bus_probe(struct platform_device *pdev)
dev_pm_opp_of_remove_table(dev);
clk_disable_unprepare(bus->clk);
err_reg:
- dev_pm_opp_put_regulators(bus->opp_table);
- bus->opp_table = NULL;
+ dev_pm_opp_put_regulators(bus->opp_token);
return ret;
}
@@ -991,8 +991,8 @@ static int _set_opp_custom(const struct opp_table *opp_table,
int size;
/*
- * We support this only if dev_pm_opp_set_regulators() was called
- * earlier.
+ * We support this only if dev_pm_opp_set_config() was called
+ * earlier to set regulators.
*/
if (opp_table->sod_supplies) {
size = sizeof(*old_opp->supplies) * opp_table->regulator_count;
@@ -2097,7 +2097,7 @@ void dev_pm_opp_put_prop_name(struct opp_table *opp_table)
EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
/**
- * dev_pm_opp_set_regulators() - Set regulator names for the device
+ * _opp_set_regulators() - Set regulator names for the device
* @dev: Device for which regulator name is being set.
* @names: Array of pointers to the names of the regulator.
* @count: Number of regulators.
@@ -2108,12 +2108,11 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
*
* This must be called before any OPPs are initialized for the device.
*/
-struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
- const char * const names[])
+static int _opp_set_regulators(struct opp_table *opp_table, struct device *dev,
+ const char * const names[])
{
struct dev_pm_opp_supply *supplies;
const char * const *temp = names;
- struct opp_table *opp_table;
struct regulator *reg;
int count = 0, ret, i;
@@ -2122,29 +2121,17 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
count++;
if (!count)
- return ERR_PTR(-EINVAL);
-
- opp_table = _add_opp_table(dev, false);
- if (IS_ERR(opp_table))
- return opp_table;
-
- /* This should be called before OPPs are initialized */
- if (WARN_ON(!list_empty(&opp_table->opp_list))) {
- ret = -EBUSY;
- goto err;
- }
+ return -EINVAL;
/* Another CPU that shares the OPP table has set the regulators ? */
if (opp_table->regulators)
- return opp_table;
+ return 0;
opp_table->regulators = kmalloc_array(count,
sizeof(*opp_table->regulators),
GFP_KERNEL);
- if (!opp_table->regulators) {
- ret = -ENOMEM;
- goto err;
- }
+ if (!opp_table->regulators)
+ return -ENOMEM;
for (i = 0; i < count; i++) {
reg = regulator_get_optional(dev, names[i]);
@@ -2174,7 +2161,7 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
}
mutex_unlock(&opp_table->lock);
- return opp_table;
+ return 0;
free_regulators:
while (i != 0)
@@ -2183,26 +2170,20 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
kfree(opp_table->regulators);
opp_table->regulators = NULL;
opp_table->regulator_count = -1;
-err:
- dev_pm_opp_put_opp_table(opp_table);
- return ERR_PTR(ret);
+ return ret;
}
-EXPORT_SYMBOL_GPL(dev_pm_opp_set_regulators);
/**
- * dev_pm_opp_put_regulators() - Releases resources blocked for regulator
- * @opp_table: OPP table returned from dev_pm_opp_set_regulators().
+ * _opp_put_regulators() - Releases resources blocked for regulator
+ * @opp_table: OPP table returned from _opp_set_regulators().
*/
-void dev_pm_opp_put_regulators(struct opp_table *opp_table)
+static void _opp_put_regulators(struct opp_table *opp_table)
{
int i;
- if (unlikely(!opp_table))
- return;
-
if (!opp_table->regulators)
- goto put_opp_table;
+ return;
if (opp_table->enabled) {
for (i = opp_table->regulator_count - 1; i >= 0; i--)
@@ -2225,40 +2206,7 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
kfree(opp_table->regulators);
opp_table->regulators = NULL;
opp_table->regulator_count = -1;
-
-put_opp_table:
- dev_pm_opp_put_opp_table(opp_table);
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_put_regulators);
-
-static void devm_pm_opp_regulators_release(void *data)
-{
- dev_pm_opp_put_regulators(data);
-}
-
-/**
- * devm_pm_opp_set_regulators() - Set regulator names for the device
- * @dev: Device for which regulator name is being set.
- * @names: Array of pointers to the names of the regulator.
- * @count: Number of regulators.
- *
- * This is a resource-managed variant of dev_pm_opp_set_regulators().
- *
- * Return: 0 on success and errorno otherwise.
- */
-int devm_pm_opp_set_regulators(struct device *dev,
- const char * const names[])
-{
- struct opp_table *opp_table;
-
- opp_table = dev_pm_opp_set_regulators(dev, names);
- if (IS_ERR(opp_table))
- return PTR_ERR(opp_table);
-
- return devm_add_action_or_reset(dev, devm_pm_opp_regulators_release,
- opp_table);
}
-EXPORT_SYMBOL_GPL(devm_pm_opp_set_regulators);
/**
* dev_pm_opp_set_clkname() - Set clk name for the device
@@ -2633,7 +2581,7 @@ static void _opp_clear_config(struct opp_config_data *data)
if (data->flags & OPP_CONFIG_GENPD)
dev_pm_opp_detach_genpd(data->opp_table);
if (data->flags & OPP_CONFIG_REGULATOR)
- dev_pm_opp_put_regulators(data->opp_table);
+ _opp_put_regulators(data->opp_table);
if (data->flags & OPP_CONFIG_SUPPORTED_HW)
dev_pm_opp_put_supported_hw(data->opp_table);
if (data->flags & OPP_CONFIG_REGULATOR_HELPER)
@@ -2758,11 +2706,10 @@ int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
/* Configure supplies */
if (config->regulator_names) {
- err = dev_pm_opp_set_regulators(dev, config->regulator_names);
- if (IS_ERR(err)) {
- ret = PTR_ERR(err);
+ ret = _opp_set_regulators(opp_table, dev,
+ config->regulator_names);
+ if (ret)
goto err;
- }
data->flags |= OPP_CONFIG_REGULATOR;
}
@@ -189,9 +189,6 @@ void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
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 opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[]);
-void dev_pm_opp_put_regulators(struct opp_table *opp_table);
-int devm_pm_opp_set_regulators(struct device *dev, const char * const names[]);
struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name);
void dev_pm_opp_put_clkname(struct opp_table *opp_table);
int devm_pm_opp_set_clkname(struct device *dev, const char *name);
@@ -409,19 +406,6 @@ static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, con
static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {}
-static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[])
-{
- return ERR_PTR(-EOPNOTSUPP);
-}
-
-static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
-
-static inline int devm_pm_opp_set_regulators(struct device *dev,
- const char * const names[])
-{
- return -EOPNOTSUPP;
-}
-
static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name)
{
return ERR_PTR(-EOPNOTSUPP);
@@ -606,4 +590,32 @@ static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_ta
}
#endif
+/* OPP Configuration helpers */
+
+/* Regulators helpers */
+static inline int dev_pm_opp_set_regulators(struct device *dev,
+ const char * const names[])
+{
+ struct dev_pm_opp_config config = {
+ .regulator_names = names,
+ };
+
+ return dev_pm_opp_set_config(dev, &config);
+}
+
+static inline void dev_pm_opp_put_regulators(int token)
+{
+ dev_pm_opp_clear_config(token);
+}
+
+static inline int devm_pm_opp_set_regulators(struct device *dev,
+ const char * const names[])
+{
+ struct dev_pm_opp_config config = {
+ .regulator_names = names,
+ };
+
+ return devm_pm_opp_set_config(dev, &config);
+}
+
#endif /* __LINUX_OPP_H__ */
Now that we have a central API to handle all OPP table configurations, migrate the set-regulators 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@linaro.org> --- drivers/cpufreq/cpufreq-dt.c | 12 ++--- drivers/devfreq/exynos-bus.c | 19 +++----- drivers/opp/core.c | 91 ++++++++---------------------------- include/linux/pm_opp.h | 44 ++++++++++------- 4 files changed, 60 insertions(+), 106 deletions(-)