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From: Viresh Kumar <viresh.kumar@linaro.org>
To: ulf.hansson@linaro.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Kevin Hilman <khilman@kernel.org>, Pavel Machek <pavel@ucw.cz>,
	Len Brown <len.brown@intel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>,
	linux-pm@vger.kernel.org,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Stephen Boyd <sboyd@kernel.org>, Nishanth Menon <nm@ti.com>,
	niklas.cassel@linaro.org, rnayak@codeaurora.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH V3 06/10] PM / Domains: Add genpd_opp_to_performance_state()
Date: Thu, 25 Oct 2018 11:22:43 +0530	[thread overview]
Message-ID: <e09b2960614c70e38347d52bd4093ab93af1da47.1540446493.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1540446493.git.viresh.kumar@linaro.org>

The OPP core currently stores the performance state in the consumer
device's OPP table, but that is going to change going forward and
performance state will rather be set directly in the genpd's OPP table.

For that we need to get the performance state for genpd's device
structure (genpd->dev) instead of the consumer device's structure. Add a
new helper to do that.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/base/power/domain.c | 32 ++++++++++++++++++++++++++++++++
 include/linux/pm_domain.h   |  9 +++++++++
 2 files changed, 41 insertions(+)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index fe9b0527b161..7be8c94c6b7f 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2520,6 +2520,38 @@ int of_genpd_parse_idle_states(struct device_node *dn,
 }
 EXPORT_SYMBOL_GPL(of_genpd_parse_idle_states);
 
+/**
+ * pm_genpd_opp_to_performance_state - Gets performance state of the genpd from its OPP node.
+ *
+ * @genpd_dev: Genpd's device for which the performance-state needs to be found.
+ * @opp: struct dev_pm_opp of the OPP for which we need to find performance
+ *	state.
+ *
+ * Returns performance state encoded in the OPP of the genpd. This calls
+ * platform specific genpd->opp_to_performance_state() callback to translate
+ * power domain OPP to performance state.
+ *
+ * Returns performance state on success and 0 on failure.
+ */
+unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev,
+					       struct dev_pm_opp *opp)
+{
+	struct generic_pm_domain *genpd = NULL;
+	int state;
+
+	genpd = container_of(genpd_dev, struct generic_pm_domain, dev);
+
+	if (unlikely(!genpd->opp_to_performance_state))
+		return 0;
+
+	genpd_lock(genpd);
+	state = genpd->opp_to_performance_state(genpd, opp);
+	genpd_unlock(genpd);
+
+	return state;
+}
+EXPORT_SYMBOL_GPL(pm_genpd_opp_to_performance_state);
+
 /**
  * of_genpd_opp_to_performance_state- Gets performance state of device's
  * power domain corresponding to a DT node's "required-opps" property.
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 3b5d7280e52e..4f803f934308 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -258,6 +258,8 @@ int of_genpd_add_subdomain(struct of_phandle_args *parent,
 struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
 int of_genpd_parse_idle_states(struct device_node *dn,
 			       struct genpd_power_state **states, int *n);
+unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev,
+					       struct dev_pm_opp *opp);
 unsigned int of_genpd_opp_to_performance_state(struct device *dev,
 				struct device_node *np);
 
@@ -299,6 +301,13 @@ static inline int of_genpd_parse_idle_states(struct device_node *dn,
 	return -ENODEV;
 }
 
+static inline unsigned int
+pm_genpd_opp_to_performance_state(struct device *genpd_dev,
+				  struct dev_pm_opp *opp)
+{
+	return 0;
+}
+
 static inline unsigned int
 of_genpd_opp_to_performance_state(struct device *dev,
 				  struct device_node *np)
-- 
2.19.1.568.g152ad8e3369a


  parent reply	other threads:[~2018-10-25  5:53 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-25  5:52 [PATCH V3 00/10] OPP: Support multiple power-domains per device Viresh Kumar
2018-10-25  5:52 ` [PATCH V3 01/10] PM / Domains: Rename genpd virtual devices as virt_dev Viresh Kumar
2018-10-25 10:54   ` Ulf Hansson
2018-10-25  5:52 ` [PATCH V3 02/10] OPP: Identify and mark genpd OPP tables Viresh Kumar
2018-10-25  5:52 ` [PATCH V3 03/10] OPP: Separate out custom OPP handler specific code Viresh Kumar
2018-10-25  5:52 ` [PATCH V3 04/10] OPP: Populate required opp tables from "required-opps" property Viresh Kumar
2018-10-25  5:52 ` [PATCH V3 05/10] OPP: Populate OPPs " Viresh Kumar
2018-10-25  5:52 ` Viresh Kumar [this message]
2018-10-25 10:54   ` [PATCH V3 06/10] PM / Domains: Add genpd_opp_to_performance_state() Ulf Hansson
2018-10-25  5:52 ` [PATCH V3 07/10] OPP: Add dev_pm_opp_{set|put}_genpd_virt_dev() helper Viresh Kumar
2018-10-25 10:54   ` Ulf Hansson
2018-10-25  5:52 ` [PATCH V3 08/10] OPP: Configure all required OPPs Viresh Kumar
2018-10-25 10:54   ` Ulf Hansson
2018-10-25  5:52 ` [PATCH V3 09/10] OPP: Rename and relocate of_genpd_opp_to_performance_state() Viresh Kumar
2018-10-25 10:54   ` Ulf Hansson
2018-11-02  9:15   ` [PATCH V4 " Viresh Kumar
2018-10-25  5:52 ` [PATCH V3 10/10] OPP: Remove of_dev_pm_opp_find_required_opp() Viresh Kumar
2018-10-25 10:54   ` Ulf Hansson

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