PM / OPP: Support adjusting OPP voltages at runtime

[firefly-linux-kernel-4.4.55.git] / include / linux / pm_opp.h

diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 9a2e50337af9fd233656b8fb6f06a91c10b2e7bf..8c0c6d86e2b4a34cbec900929495082e40cb825d 100644 (file)
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -22,6 +22,7 @@ struct device;
 
 enum dev_pm_opp_event {
        OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
+       OPP_EVENT_ADJUST_VOLTAGE,
 };
 
 #if defined(CONFIG_PM_OPP)
@@ -34,6 +35,8 @@ bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
 
 int dev_pm_opp_get_opp_count(struct device *dev);
 unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
+unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
+unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
 struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev);
 
 struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
@@ -50,11 +53,22 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq,
                   unsigned long u_volt);
 void dev_pm_opp_remove(struct device *dev, unsigned long freq);
 
+int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+                             unsigned long u_volt);
+
 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
 
 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
 
 struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
+int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
+                               unsigned int count);
+void dev_pm_opp_put_supported_hw(struct device *dev);
+int dev_pm_opp_set_prop_name(struct device *dev, const char *name);
+void dev_pm_opp_put_prop_name(struct device *dev);
+int dev_pm_opp_set_regulator(struct device *dev, const char *name);
+void dev_pm_opp_put_regulator(struct device *dev);
+int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
 #else
 static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
 {
@@ -81,6 +95,16 @@ static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
        return 0;
 }
 
+static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
+{
+       return 0;
+}
+
+static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
+{
+       return 0;
+}
+
 static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev)
 {
        return NULL;
@@ -114,6 +138,13 @@ static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
 {
 }
 
+static inline int
+dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+                         unsigned long u_volt)
+{
+       return 0;
+}
+
 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
 {
        return 0;
@@ -129,6 +160,35 @@ static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
 {
        return ERR_PTR(-EINVAL);
 }
+
+static inline int dev_pm_opp_set_supported_hw(struct device *dev,
+                                             const u32 *versions,
+                                             unsigned int count)
+{
+       return -EINVAL;
+}
+
+static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
+
+static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
+{
+       return -EINVAL;
+}
+
+static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
+
+static inline int dev_pm_opp_set_regulator(struct device *dev, const char *name)
+{
+       return -EINVAL;
+}
+
+static inline void dev_pm_opp_put_regulator(struct device *dev) {}
+
+static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
+{
+       return -EINVAL;
+}
+
 #endif         /* CONFIG_PM_OPP */
 
 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)