On 9/27/2023 12:44 PM, Viresh Kumar wrote:
On 07-09-23, 11:30, Krishna chaitanya chundru wrote:
$Subject should have OPP instead of opp. Past history of framework can be seen
for this.
I will change the subject in the next patch series.
- KC
During initialization of some drivers, need to vote for max level.
Adding dev_pm_opp_find_level_floor() for searching a lesser match or
operating on OPP in the order of decreasing level.
Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
---
drivers/opp/core.c | 25 +++++++++++++++++++++++++
include/linux/pm_opp.h | 9 +++++++++
2 files changed, 34 insertions(+)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 919cc53..6d4d226 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -814,6 +814,31 @@ struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
/**
+ * dev_pm_opp_find_level_floor() - Search for a rounded floor freq
freq ?
+ * @dev: device for which we do this operation
+ * @level: Start level
+ *
+ * Search for the matching floor *available* OPP from a starting level
+ * for a device.
+ *
+ * Return: matching *opp and refreshes *level 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_level_floor(struct device *dev,
+ unsigned long *level)
+{
+ return _find_key_floor(dev, level, 0, true, _read_level, NULL);
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_floor);
+
+/**
* dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
* @dev: device for which we do this operation
* @bw: start bandwidth
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 91f87d7..baea92f 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -144,6 +144,9 @@ struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
unsigned int *level);
+struct dev_pm_opp *dev_pm_opp_find_level_floor(struct device *dev,
+ unsigned long *level);
+
struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
unsigned int *bw, int index);
@@ -314,6 +317,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
return ERR_PTR(-EOPNOTSUPP);
}
+static inline struct dev_pm_opp *dev_pm_opp_find_level_floor(struct device *dev,
Why add between two bw related functions ?
+ unsigned long *level)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
unsigned int *bw, int index)
{
Fixed all this and applied. Thanks.
