From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>,
ulf.hansson@linaro.org, Kevin Hilman <khilman@kernel.org>,
Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
Stephen Boyd <sboyd@codeaurora.org>
Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
robh+dt@kernel.org, lina.iyer@linaro.org, rnayak@codeaurora.org,
sudeep.holla@arm.com, Viresh Kumar <viresh.kumar@linaro.org>
Subject: [PATCH V6 6/9] PM / OPP: Implement dev_pm_opp_of_add_table_indexed()
Date: Wed, 26 Apr 2017 16:27:10 +0530 [thread overview]
Message-ID: <2268452b1c6929fc5b08c34aec9a06ebd0993461.1493203884.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1493203884.git.viresh.kumar@linaro.org>
In-Reply-To: <cover.1493203884.git.viresh.kumar@linaro.org>
The "operating-points-v2" property can contain a list of phandles now,
specifically for the power domain providers that provide multiple
domains.
Add support to parse that.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/base/power/opp/of.c | 50 +++++++++++++++++++++++++++++++++++++++------
include/linux/pm_opp.h | 6 ++++++
2 files changed, 50 insertions(+), 6 deletions(-)
diff --git a/drivers/base/power/opp/of.c b/drivers/base/power/opp/of.c
index 77693ba3ed55..9cdf3a848e69 100644
--- a/drivers/base/power/opp/of.c
+++ b/drivers/base/power/opp/of.c
@@ -243,14 +243,17 @@ void dev_pm_opp_of_remove_table(struct device *dev)
EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
/* Returns opp descriptor node for a device, caller must do of_node_put() */
-struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+static struct device_node *_of_get_opp_desc_node_indexed(struct device *dev,
+ int index)
{
- /*
- * There should be only ONE phandle present in "operating-points-v2"
- * property.
- */
+ /* "operating-points-v2" can be an array for power domain providers */
+ return of_parse_phandle(dev->of_node, "operating-points-v2", index);
+}
- return of_parse_phandle(dev->of_node, "operating-points-v2", 0);
+/* Returns opp descriptor node for a device, caller must do of_node_put() */
+struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+{
+ return _of_get_opp_desc_node_indexed(dev, 0);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_opp_desc_node);
@@ -572,6 +575,41 @@ int dev_pm_opp_of_add_table(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
+/**
+ * dev_pm_opp_of_add_table_indexed() - Initialize indexed opp table from device tree
+ * @dev: device pointer used to lookup OPP table.
+ * @index: Index number.
+ *
+ * Register the initial OPP table with the OPP library for given device only
+ * using the "operating-points-v2" property.
+ *
+ * Return:
+ * 0 On success OR
+ * Duplicate OPPs (both freq and volt are same) and opp->available
+ * -EEXIST Freq are same and volt are different OR
+ * Duplicate OPPs (both freq and volt are same) and !opp->available
+ * -ENOMEM Memory allocation failure
+ * -ENODEV when 'operating-points' property is not found or is invalid data
+ * in device node.
+ * -ENODATA when empty 'operating-points' property is found
+ * -EINVAL when invalid entries are found in opp-v2 table
+ */
+int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
+{
+ struct device_node *opp_np;
+ int ret;
+
+ opp_np = _of_get_opp_desc_node_indexed(dev, index);
+ if (!opp_np)
+ return -ENODEV;
+
+ ret = _of_add_opp_table_v2(dev, opp_np);
+ of_node_put(opp_np);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_indexed);
+
/* CPU device specific helpers */
/**
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index a6685b3dde26..8263d831715c 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -284,6 +284,7 @@ static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask
#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
int dev_pm_opp_of_add_table(struct device *dev);
+int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
void dev_pm_opp_of_remove_table(struct device *dev);
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
@@ -295,6 +296,11 @@ static inline int dev_pm_opp_of_add_table(struct device *dev)
return -ENOTSUPP;
}
+static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
+{
+ return -ENOTSUPP;
+}
+
static inline void dev_pm_opp_of_remove_table(struct device *dev)
{
}
--
2.12.0.432.g71c3a4f4ba37
next prev parent reply other threads:[~2017-04-26 10:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-26 10:57 [PATCH V6 0/9] PM / Domains: Implement domain performance states Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 1/9] PM / OPP: Introduce "power-domain-opp" property Viresh Kumar
2017-04-28 20:48 ` Rob Herring
2017-05-03 11:29 ` Sudeep Holla
2017-05-06 9:39 ` Kevin Hilman
2017-05-08 13:47 ` Sudeep Holla
2017-05-08 7:13 ` Viresh Kumar
2017-05-08 13:57 ` Sudeep Holla
2017-05-09 5:29 ` Viresh Kumar
2017-05-06 9:58 ` Kevin Hilman
2017-05-08 4:15 ` Viresh Kumar
2017-05-08 5:36 ` Rajendra Nayak
2017-05-08 7:11 ` Viresh Kumar
2017-05-12 14:59 ` Kevin Hilman
2017-05-12 16:18 ` Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 2/9] PM / Domains: Allow OPP table to be used for power-domains Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 3/9] PM / QOS: Keep common notifier list for genpd constraints Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 4/9] PM / QOS: Add DEV_PM_QOS_PERFORMANCE request Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 5/9] PM / OPP: Add support to parse "power-domain-opp" property Viresh Kumar
2017-04-26 10:57 ` Viresh Kumar [this message]
2017-04-26 10:57 ` [PATCH V6 7/9] PM / domain: Register PM QOS performance notifier Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 8/9] PM / Domain: Add struct device to genpd Viresh Kumar
2017-04-26 10:57 ` [PATCH V6 9/9] PM / Domain: Add support to parse domain's OPP table Viresh Kumar
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