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-rw-r--r--drivers/opp/core.c339
-rw-r--r--drivers/opp/debugfs.c10
-rw-r--r--drivers/opp/of.c8
3 files changed, 238 insertions, 119 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 740407252298..84063eaebb91 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -456,103 +456,6 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact);
-/**
- * dev_pm_opp_find_level_exact() - search for an exact level
- * @dev: device for which we do this operation
- * @level: level to search for
- *
- * Return: Searches for exact match in the opp table and returns pointer to the
- * matching opp if found, else returns ERR_PTR in case of error and should
- * be handled using IS_ERR. Error return values can be:
- * EINVAL: for bad pointer
- * ERANGE: no match found for search
- * ENODEV: if device not found in list of registered devices
- *
- * The callers are required to call dev_pm_opp_put() for the returned OPP after
- * use.
- */
-struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
- unsigned int level)
-{
- struct opp_table *opp_table;
- struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
-
- opp_table = _find_opp_table(dev);
- if (IS_ERR(opp_table)) {
- int r = PTR_ERR(opp_table);
-
- dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
- return ERR_PTR(r);
- }
-
- mutex_lock(&opp_table->lock);
-
- list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
- if (temp_opp->level == level) {
- opp = temp_opp;
-
- /* Increment the reference count of OPP */
- dev_pm_opp_get(opp);
- break;
- }
- }
-
- mutex_unlock(&opp_table->lock);
- dev_pm_opp_put_opp_table(opp_table);
-
- return opp;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
-
-/**
- * dev_pm_opp_find_level_ceil() - search for an rounded up level
- * @dev: device for which we do this operation
- * @level: level to search for
- *
- * Return: Searches for rounded up match in the opp table and returns pointer
- * to the matching opp if found, else returns ERR_PTR in case of error and
- * should be handled using IS_ERR. Error return values can be:
- * EINVAL: for bad pointer
- * ERANGE: no match found for search
- * ENODEV: if device not found in list of registered devices
- *
- * The callers are required to call dev_pm_opp_put() for the returned OPP after
- * use.
- */
-struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
- unsigned int *level)
-{
- struct opp_table *opp_table;
- struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
-
- opp_table = _find_opp_table(dev);
- if (IS_ERR(opp_table)) {
- int r = PTR_ERR(opp_table);
-
- dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
- return ERR_PTR(r);
- }
-
- mutex_lock(&opp_table->lock);
-
- list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
- if (temp_opp->available && temp_opp->level >= *level) {
- opp = temp_opp;
- *level = opp->level;
-
- /* Increment the reference count of OPP */
- dev_pm_opp_get(opp);
- break;
- }
- }
-
- mutex_unlock(&opp_table->lock);
- dev_pm_opp_put_opp_table(opp_table);
-
- return opp;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
-
static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
unsigned long *freq)
{
@@ -729,6 +632,223 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil_by_volt);
+/**
+ * dev_pm_opp_find_level_exact() - search for an exact level
+ * @dev: device for which we do this operation
+ * @level: level to search for
+ *
+ * Return: Searches for exact match in the opp table and returns pointer to the
+ * matching opp if found, else returns ERR_PTR in case of error and should
+ * be handled using IS_ERR. Error return values can be:
+ * EINVAL: for bad pointer
+ * ERANGE: no match found for search
+ * ENODEV: if device not found in list of registered devices
+ *
+ * The callers are required to call dev_pm_opp_put() for the returned OPP after
+ * use.
+ */
+struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
+ unsigned int level)
+{
+ struct opp_table *opp_table;
+ struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
+
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table)) {
+ int r = PTR_ERR(opp_table);
+
+ dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
+ return ERR_PTR(r);
+ }
+
+ mutex_lock(&opp_table->lock);
+
+ list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
+ if (temp_opp->level == level) {
+ opp = temp_opp;
+
+ /* Increment the reference count of OPP */
+ dev_pm_opp_get(opp);
+ break;
+ }
+ }
+
+ mutex_unlock(&opp_table->lock);
+ dev_pm_opp_put_opp_table(opp_table);
+
+ return opp;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
+
+/**
+ * dev_pm_opp_find_level_ceil() - search for an rounded up level
+ * @dev: device for which we do this operation
+ * @level: level to search for
+ *
+ * Return: Searches for rounded up match in the opp table and returns pointer
+ * to the matching opp if found, else returns ERR_PTR in case of error and
+ * should be handled using IS_ERR. Error return values can be:
+ * EINVAL: for bad pointer
+ * ERANGE: no match found for search
+ * ENODEV: if device not found in list of registered devices
+ *
+ * The callers are required to call dev_pm_opp_put() for the returned OPP after
+ * use.
+ */
+struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
+ unsigned int *level)
+{
+ struct opp_table *opp_table;
+ struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
+
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table)) {
+ int r = PTR_ERR(opp_table);
+
+ dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
+ return ERR_PTR(r);
+ }
+
+ mutex_lock(&opp_table->lock);
+
+ list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
+ if (temp_opp->available && temp_opp->level >= *level) {
+ opp = temp_opp;
+ *level = opp->level;
+
+ /* Increment the reference count of OPP */
+ dev_pm_opp_get(opp);
+ break;
+ }
+ }
+
+ mutex_unlock(&opp_table->lock);
+ dev_pm_opp_put_opp_table(opp_table);
+
+ return opp;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
+
+/**
+ * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
+ * @dev: device for which we do this operation
+ * @freq: start bandwidth
+ * @index: which bandwidth to compare, in case of OPPs with several values
+ *
+ * Search for the matching floor *available* OPP from a starting bandwidth
+ * for a device.
+ *
+ * Return: matching *opp and refreshes *bw accordingly, else returns
+ * ERR_PTR in case of error and should be handled using IS_ERR. Error return
+ * values can be:
+ * EINVAL: for bad pointer
+ * ERANGE: no match found for search
+ * ENODEV: if device not found in list of registered devices
+ *
+ * The callers are required to call dev_pm_opp_put() for the returned OPP after
+ * use.
+ */
+struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
+ unsigned int *bw, int index)
+{
+ struct opp_table *opp_table;
+ struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
+
+ if (!dev || !bw) {
+ dev_err(dev, "%s: Invalid argument bw=%p\n", __func__, bw);
+ return ERR_PTR(-EINVAL);
+ }
+
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table))
+ return ERR_CAST(opp_table);
+
+ if (index >= opp_table->path_count)
+ return ERR_PTR(-EINVAL);
+
+ mutex_lock(&opp_table->lock);
+
+ list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
+ if (temp_opp->available && temp_opp->bandwidth) {
+ if (temp_opp->bandwidth[index].peak >= *bw) {
+ opp = temp_opp;
+ *bw = opp->bandwidth[index].peak;
+
+ /* Increment the reference count of OPP */
+ dev_pm_opp_get(opp);
+ break;
+ }
+ }
+ }
+
+ mutex_unlock(&opp_table->lock);
+ dev_pm_opp_put_opp_table(opp_table);
+
+ return opp;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_find_bw_ceil);
+
+/**
+ * dev_pm_opp_find_bw_floor() - Search for a rounded floor bandwidth
+ * @dev: device for which we do this operation
+ * @freq: start bandwidth
+ * @index: which bandwidth to compare, in case of OPPs with several values
+ *
+ * Search for the matching floor *available* OPP from a starting bandwidth
+ * for a device.
+ *
+ * Return: matching *opp and refreshes *bw accordingly, else returns
+ * ERR_PTR in case of error and should be handled using IS_ERR. Error return
+ * values can be:
+ * EINVAL: for bad pointer
+ * ERANGE: no match found for search
+ * ENODEV: if device not found in list of registered devices
+ *
+ * The callers are required to call dev_pm_opp_put() for the returned OPP after
+ * use.
+ */
+struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
+ unsigned int *bw, int index)
+{
+ struct opp_table *opp_table;
+ struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
+
+ if (!dev || !bw) {
+ dev_err(dev, "%s: Invalid argument bw=%p\n", __func__, bw);
+ return ERR_PTR(-EINVAL);
+ }
+
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table))
+ return ERR_CAST(opp_table);
+
+ if (index >= opp_table->path_count)
+ return ERR_PTR(-EINVAL);
+
+ mutex_lock(&opp_table->lock);
+
+ list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
+ if (temp_opp->available && temp_opp->bandwidth) {
+ /* go to the next node, before choosing prev */
+ if (temp_opp->bandwidth[index].peak > *bw)
+ break;
+ opp = temp_opp;
+ }
+ }
+
+ /* Increment the reference count of OPP */
+ if (!IS_ERR(opp))
+ dev_pm_opp_get(opp);
+ mutex_unlock(&opp_table->lock);
+ dev_pm_opp_put_opp_table(opp_table);
+
+ if (!IS_ERR(opp))
+ *bw = opp->bandwidth[index].peak;
+
+ return opp;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_find_bw_floor);
+
static int _set_opp_voltage(struct device *dev, struct regulator *reg,
struct dev_pm_opp_supply *supply)
{
@@ -1486,9 +1606,8 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_put);
*/
void dev_pm_opp_remove(struct device *dev, unsigned long freq)
{
- struct dev_pm_opp *opp;
+ struct dev_pm_opp *opp = NULL, *iter;
struct opp_table *opp_table;
- bool found = false;
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table))
@@ -1496,16 +1615,16 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq)
mutex_lock(&opp_table->lock);
- list_for_each_entry(opp, &opp_table->opp_list, node) {
- if (opp->rate == freq) {
- found = true;
+ list_for_each_entry(iter, &opp_table->opp_list, node) {
+ if (iter->rate == freq) {
+ opp = iter;
break;
}
}
mutex_unlock(&opp_table->lock);
- if (found) {
+ if (opp) {
dev_pm_opp_put(opp);
/* Drop the reference taken by dev_pm_opp_add() */
@@ -2019,10 +2138,9 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
for (i = 0; i < count; i++) {
reg = regulator_get_optional(dev, names[i]);
if (IS_ERR(reg)) {
- ret = PTR_ERR(reg);
- if (ret != -EPROBE_DEFER)
- dev_err(dev, "%s: no regulator (%s) found: %d\n",
- __func__, names[i], ret);
+ ret = dev_err_probe(dev, PTR_ERR(reg),
+ "%s: no regulator (%s) found\n",
+ __func__, names[i]);
goto free_regulators;
}
@@ -2168,11 +2286,8 @@ struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name)
/* Find clk for the device */
opp_table->clk = clk_get(dev, name);
if (IS_ERR(opp_table->clk)) {
- ret = PTR_ERR(opp_table->clk);
- if (ret != -EPROBE_DEFER) {
- dev_err(dev, "%s: Couldn't find clock: %d\n", __func__,
- ret);
- }
+ ret = dev_err_probe(dev, PTR_ERR(opp_table->clk),
+ "%s: Couldn't find clock\n", __func__);
goto err;
}
diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c
index 3fcc1f97f2d1..1b6e5c55c3ed 100644
--- a/drivers/opp/debugfs.c
+++ b/drivers/opp/debugfs.c
@@ -195,14 +195,18 @@ void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
static void opp_migrate_dentry(struct opp_device *opp_dev,
struct opp_table *opp_table)
{
- struct opp_device *new_dev;
+ struct opp_device *new_dev = NULL, *iter;
const struct device *dev;
struct dentry *dentry;
/* Look for next opp-dev */
- list_for_each_entry(new_dev, &opp_table->dev_list, node)
- if (new_dev != opp_dev)
+ list_for_each_entry(iter, &opp_table->dev_list, node)
+ if (iter != opp_dev) {
+ new_dev = iter;
break;
+ }
+
+ BUG_ON(!new_dev);
/* new_dev is guaranteed to be valid here */
dev = new_dev->dev;
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 440ab5a03df9..30394929d700 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -437,11 +437,11 @@ static int _bandwidth_supported(struct device *dev, struct opp_table *opp_table)
/* Checking only first OPP is sufficient */
np = of_get_next_available_child(opp_np, NULL);
+ of_node_put(opp_np);
if (!np) {
dev_err(dev, "OPP table empty\n");
return -EINVAL;
}
- of_node_put(opp_np);
prop = of_find_property(np, "opp-peak-kBps", NULL);
of_node_put(np);
@@ -1448,7 +1448,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_of_node);
* Returns 0 on success or a proper -EINVAL value in case of error.
*/
static int __maybe_unused
-_get_dt_power(unsigned long *mW, unsigned long *kHz, struct device *dev)
+_get_dt_power(struct device *dev, unsigned long *mW, unsigned long *kHz)
{
struct dev_pm_opp *opp;
unsigned long opp_freq, opp_power;
@@ -1482,8 +1482,8 @@ _get_dt_power(unsigned long *mW, unsigned long *kHz, struct device *dev)
* Returns -EINVAL if the power calculation failed because of missing
* parameters, 0 otherwise.
*/
-static int __maybe_unused _get_power(unsigned long *mW, unsigned long *kHz,
- struct device *dev)
+static int __maybe_unused _get_power(struct device *dev, unsigned long *mW,
+ unsigned long *kHz)
{
struct dev_pm_opp *opp;
struct device_node *np;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-15 21:01:46 +0300