Now that we have a central API to handle all OPP table configurations,
migrate the set-supported-hw 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@xxxxxxxxxx>
---
drivers/cpufreq/imx-cpufreq-dt.c | 12 ++--
drivers/cpufreq/tegra20-cpufreq.c | 12 ++--
drivers/memory/tegra/tegra124-emc.c | 11 ++--
drivers/opp/core.c | 87 +++++++----------------------
include/linux/pm_opp.h | 49 +++++++++-------
5 files changed, 66 insertions(+), 105 deletions(-)
diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c
index 3fe9125156b4..76e553af2071 100644
--- a/drivers/cpufreq/imx-cpufreq-dt.c
+++ b/drivers/cpufreq/imx-cpufreq-dt.c
@@ -31,8 +31,8 @@
/* cpufreq-dt device registered by imx-cpufreq-dt */
static struct platform_device *cpufreq_dt_pdev;
-static struct opp_table *cpufreq_opp_table;
static struct device *cpu_dev;
+static int cpufreq_opp_token;
enum IMX7ULP_CPUFREQ_CLKS {
ARM,
@@ -153,9 +153,9 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "cpu speed grade %d mkt segment %d supported-hw %#x %#x\n",
speed_grade, mkt_segment, supported_hw[0], supported_hw[1]);
- cpufreq_opp_table = dev_pm_opp_set_supported_hw(cpu_dev, supported_hw, 2);
- if (IS_ERR(cpufreq_opp_table)) {
- ret = PTR_ERR(cpufreq_opp_table);
+ cpufreq_opp_token = dev_pm_opp_set_supported_hw(cpu_dev, supported_hw, 2);
+ if (cpufreq_opp_token < 0) {
+ ret = cpufreq_opp_token;
dev_err(&pdev->dev, "Failed to set supported opp: %d\n", ret);
return ret;
}
@@ -163,7 +163,7 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
cpufreq_dt_pdev = platform_device_register_data(
&pdev->dev, "cpufreq-dt", -1, NULL, 0);
if (IS_ERR(cpufreq_dt_pdev)) {
- dev_pm_opp_put_supported_hw(cpufreq_opp_table);
+ dev_pm_opp_put_supported_hw(cpufreq_opp_token);
ret = PTR_ERR(cpufreq_dt_pdev);
dev_err(&pdev->dev, "Failed to register cpufreq-dt: %d\n", ret);
return ret;
@@ -176,7 +176,7 @@ static int imx_cpufreq_dt_remove(struct platform_device *pdev)
{
platform_device_unregister(cpufreq_dt_pdev);
if (!of_machine_is_compatible("fsl,imx7ulp"))
- dev_pm_opp_put_supported_hw(cpufreq_opp_table);
+ dev_pm_opp_put_supported_hw(cpufreq_opp_token);
else
clk_bulk_put(ARRAY_SIZE(imx7ulp_clks), imx7ulp_clks);
diff --git a/drivers/cpufreq/tegra20-cpufreq.c b/drivers/cpufreq/tegra20-cpufreq.c
index e8db3d75be25..ab7ac7df9e62 100644
--- a/drivers/cpufreq/tegra20-cpufreq.c
+++ b/drivers/cpufreq/tegra20-cpufreq.c
@@ -32,9 +32,9 @@ static bool cpu0_node_has_opp_v2_prop(void)
return ret;
}
-static void tegra20_cpufreq_put_supported_hw(void *opp_table)
+static void tegra20_cpufreq_put_supported_hw(void *opp_token)
{
- dev_pm_opp_put_supported_hw(opp_table);
+ dev_pm_opp_put_supported_hw((unsigned long) opp_token);
}
static void tegra20_cpufreq_dt_unregister(void *cpufreq_dt)
@@ -45,7 +45,6 @@ static void tegra20_cpufreq_dt_unregister(void *cpufreq_dt)
static int tegra20_cpufreq_probe(struct platform_device *pdev)
{
struct platform_device *cpufreq_dt;
- struct opp_table *opp_table;
struct device *cpu_dev;
u32 versions[2];
int err;
@@ -71,16 +70,15 @@ static int tegra20_cpufreq_probe(struct platform_device *pdev)
if (WARN_ON(!cpu_dev))
return -ENODEV;
- opp_table = dev_pm_opp_set_supported_hw(cpu_dev, versions, 2);
- err = PTR_ERR_OR_ZERO(opp_table);
- if (err) {
+ err = dev_pm_opp_set_supported_hw(cpu_dev, versions, 2);
+ if (err < 0) {
dev_err(&pdev->dev, "failed to set supported hw: %d\n", err);
return err;
}
err = devm_add_action_or_reset(&pdev->dev,
tegra20_cpufreq_put_supported_hw,
- opp_table);
+ (void *)((unsigned long) err));
if (err)
return err;
diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c
index 908f8d5392b2..85bc936c02f9 100644
--- a/drivers/memory/tegra/tegra124-emc.c
+++ b/drivers/memory/tegra/tegra124-emc.c
@@ -1395,15 +1395,14 @@ static int tegra_emc_interconnect_init(struct tegra_emc *emc)
static int tegra_emc_opp_table_init(struct tegra_emc *emc)
{
u32 hw_version = BIT(tegra_sku_info.soc_speedo_id);
- struct opp_table *hw_opp_table;
- int err;
+ int opp_token, err;
- hw_opp_table = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1);
- err = PTR_ERR_OR_ZERO(hw_opp_table);
- if (err) {
+ err = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1);
+ if (err < 0) {
dev_err(emc->dev, "failed to set OPP supported HW: %d\n", err);
return err;
}
+ opp_token = err;
err = dev_pm_opp_of_add_table(emc->dev);
if (err) {
@@ -1430,7 +1429,7 @@ static int tegra_emc_opp_table_init(struct tegra_emc *emc)
remove_table:
dev_pm_opp_of_remove_table(emc->dev);
put_hw_table:
- dev_pm_opp_put_supported_hw(hw_opp_table);
+ dev_pm_opp_put_supported_hw(opp_token);
return err;
}
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 6ff9b5b69d07..8dbdfff38973 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1952,7 +1952,7 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
}
/**
- * dev_pm_opp_set_supported_hw() - Set supported platforms
+ * _opp_set_supported_hw() - Set supported platforms
* @dev: Device for which supported-hw has to be set.
* @versions: Array of hierarchy of versions to match.
* @count: Number of elements in the array.
@@ -1962,84 +1962,39 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
* OPPs, which are available for those versions, based on its 'opp-supported-hw'
* property.
*/
-struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
- const u32 *versions, unsigned int count)
+static int _opp_set_supported_hw(struct opp_table *opp_table,
+ const u32 *versions, unsigned int count)
{
- 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->supported_hw)
- return opp_table;
+ return 0;
opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions),
GFP_KERNEL);
- if (!opp_table->supported_hw) {
- dev_pm_opp_put_opp_table(opp_table);
- return ERR_PTR(-ENOMEM);
- }
+ if (!opp_table->supported_hw)
+ return -ENOMEM;
opp_table->supported_hw_count = count;
- return opp_table;
+ return 0;
}
-EXPORT_SYMBOL_GPL(dev_pm_opp_set_supported_hw);
/**
- * dev_pm_opp_put_supported_hw() - Releases resources blocked for supported hw
- * @opp_table: OPP table returned by dev_pm_opp_set_supported_hw().
+ * _opp_put_supported_hw() - Releases resources blocked for supported hw
+ * @opp_table: OPP table returned by _opp_set_supported_hw().
*
* This is required only for the V2 bindings, and is called for a matching
- * dev_pm_opp_set_supported_hw(). Until this is called, the opp_table structure
+ * _opp_set_supported_hw(). Until this is called, the opp_table structure
* will not be freed.
*/
-void dev_pm_opp_put_supported_hw(struct opp_table *opp_table)
+static void _opp_put_supported_hw(struct opp_table *opp_table)
{
- if (unlikely(!opp_table))
- return;
-
- kfree(opp_table->supported_hw);
- opp_table->supported_hw = NULL;
- opp_table->supported_hw_count = 0;
-
- dev_pm_opp_put_opp_table(opp_table);
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_put_supported_hw);
-
-static void devm_pm_opp_supported_hw_release(void *data)
-{
- dev_pm_opp_put_supported_hw(data);
-}
-
-/**
- * devm_pm_opp_set_supported_hw() - Set supported platforms
- * @dev: Device for which supported-hw has to be set.
- * @versions: Array of hierarchy of versions to match.
- * @count: Number of elements in the array.
- *
- * This is a resource-managed variant of dev_pm_opp_set_supported_hw().
- *
- * Return: 0 on success and errorno otherwise.
- */
-int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
- unsigned int count)
-{
- struct opp_table *opp_table;
-
- opp_table = dev_pm_opp_set_supported_hw(dev, versions, count);
- if (IS_ERR(opp_table))
- return PTR_ERR(opp_table);
-
- return devm_add_action_or_reset(dev, devm_pm_opp_supported_hw_release,
- opp_table);
+ if (opp_table->supported_hw) {
+ kfree(opp_table->supported_hw);
+ opp_table->supported_hw = NULL;
+ opp_table->supported_hw_count = 0;
+ }
}
-EXPORT_SYMBOL_GPL(devm_pm_opp_set_supported_hw);
/**
* dev_pm_opp_set_prop_name() - Set prop-extn name
@@ -2583,7 +2538,7 @@ static void _opp_clear_config(struct opp_config_data *data)
if (data->flags & OPP_CONFIG_REGULATOR)
_opp_put_regulators(data->opp_table);
if (data->flags & OPP_CONFIG_SUPPORTED_HW)
- dev_pm_opp_put_supported_hw(data->opp_table);
+ _opp_put_supported_hw(data->opp_table);
if (data->flags & OPP_CONFIG_REGULATOR_HELPER)
dev_pm_opp_unregister_set_opp_helper(data->opp_table);
if (data->flags & OPP_CONFIG_PROP_NAME)
@@ -2694,12 +2649,10 @@ int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
/* Configure supported hardware */
if (config->supported_hw) {
- err = dev_pm_opp_set_supported_hw(dev, config->supported_hw,
- config->supported_hw_count);
- if (IS_ERR(err)) {
- ret = PTR_ERR(err);
+ ret = _opp_set_supported_hw(opp_table, config->supported_hw,
+ config->supported_hw_count);
+ if (ret)
goto err;
- }
data->flags |= OPP_CONFIG_SUPPORTED_HW;
}
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index f014bd172c99..94d0101c254c 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -184,9 +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_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
-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_clkname(struct device *dev, const char *name);
@@ -369,22 +366,6 @@ static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct noti
return -EOPNOTSUPP;
}
-static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
- const u32 *versions,
- unsigned int count)
-{
- return ERR_PTR(-EOPNOTSUPP);
-}
-
-static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}
-
-static inline int devm_pm_opp_set_supported_hw(struct device *dev,
- const u32 *versions,
- unsigned int count)
-{
- return -EOPNOTSUPP;
-}
-
static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
int (*set_opp)(struct dev_pm_set_opp_data *data))
{
@@ -618,4 +599,34 @@ static inline int devm_pm_opp_set_regulators(struct device *dev,
return devm_pm_opp_set_config(dev, &config);
}
+/* Supported-hw helpers */
+static inline int dev_pm_opp_set_supported_hw(struct device *dev,
+ const u32 *versions,
+ unsigned int count)
+{
+ struct dev_pm_opp_config config = {
+ .supported_hw = versions,
+ .supported_hw_count = count,
+ };
+
+ return dev_pm_opp_set_config(dev, &config);
+}
+
+static inline void dev_pm_opp_put_supported_hw(int token)
+{
+ dev_pm_opp_clear_config(token);
+}
+
+static inline int devm_pm_opp_set_supported_hw(struct device *dev,
+ const u32 *versions,
+ unsigned int count)
+{
+ struct dev_pm_opp_config config = {
+ .supported_hw = versions,
+ .supported_hw_count = count,
+ };
+
+ return devm_pm_opp_set_config(dev, &config);
+}
+
#endif /* __LINUX_OPP_H__ */
--
2.31.1.272.g89b43f80a514
