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Message-Id: <852a47c0e7a795bdf6424519ab7fadfdeb5b4a3c.1689932341.git.viresh.kumar@linaro.org>
Date: Fri, 21 Jul 2023 15:10:57 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
Stephen Boyd <sboyd@...nel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>
Cc: Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
Vincent Guittot <vincent.guittot@...aro.org>,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH 4/6] 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@...aro.org>
---
drivers/opp/core.c | 28 ++++++++++++++++++++++++++++
include/linux/pm_opp.h | 11 +++++++++++
2 files changed, 39 insertions(+)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 00638d40353f..7b1d5724b3d8 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -648,6 +648,34 @@ 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 a13a1705df57..23e4e4eaaa42 100644
--- 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)
{
--
2.31.1.272.g89b43f80a514
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