OPP: Add dev_pm_opp_find_freq_exact_indexed()

The indexed version of the API is added for other floor and ceil, add
the same for exact as well for completeness.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 0734105..2af958d 100644 (file)
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -646,6 +646,34 @@ 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_freq_exact_indexed() - Search for an exact freq for the
+ *                                      clock corresponding to the index
+ * @dev:       Device for which we do this operation
+ * @freq:      frequency to search for
+ * @index:     Clock index
+ * @available: true/false - match for available opp
+ *
+ * Search for the matching exact OPP for the clock corresponding to the
+ * specified index from a starting freq for a device.
+ *
+ * Return: matching *opp , 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_freq_exact_indexed(struct device *dev, unsigned long freq,
+                                  u32 index, bool available)
+{
+       return _find_key_exact(dev, freq, index, available, _read_freq, NULL);
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact_indexed);
+
 static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
                                                   unsigned long *freq)
 {

diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index a13a170..23e4e4e 100644 (file)
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -124,6 +124,10 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
                                              unsigned long freq,
                                              bool available);
 
+struct dev_pm_opp *
+dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq,
+                                  u32 index, bool available);
+
 struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
                                              unsigned long *freq);
 
@@ -268,6 +272,13 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
        return ERR_PTR(-EOPNOTSUPP);
 }
 
+static inline struct dev_pm_opp *
+dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq,
+                                  u32 index, bool available)
+{
+       return ERR_PTR(-EOPNOTSUPP);
+}
+
 static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
                                        unsigned long *freq)
 {