1 files changed, 448 insertions, 0 deletions
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
new file mode 100644
index 000000000..dbb484524
--- /dev/null
+++ b/include/linux/pm_opp.h
@@ -0,0 +1,448 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Generic OPP Interface
+ *
+ * Copyright (C) 2009-2010 Texas Instruments Incorporated.
+ *	Nishanth Menon
+ *	Romit Dasgupta
+ *	Kevin Hilman
+ */
+
+#ifndef __LINUX_OPP_H__
+#define __LINUX_OPP_H__
+
+#include <linux/energy_model.h>
+#include <linux/err.h>
+#include <linux/notifier.h>
+
+struct clk;
+struct regulator;
+struct dev_pm_opp;
+struct device;
+struct opp_table;
+
+enum dev_pm_opp_event {
+	OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
+	OPP_EVENT_ADJUST_VOLTAGE,
+};
+
+/**
+ * struct dev_pm_opp_supply - Power supply voltage/current values
+ * @u_volt:	Target voltage in microvolts corresponding to this OPP
+ * @u_volt_min:	Minimum voltage in microvolts corresponding to this OPP
+ * @u_volt_max:	Maximum voltage in microvolts corresponding to this OPP
+ * @u_amp:	Maximum current drawn by the device in microamperes
+ *
+ * This structure stores the voltage/current values for a single power supply.
+ */
+struct dev_pm_opp_supply {
+	unsigned long u_volt;
+	unsigned long u_volt_min;
+	unsigned long u_volt_max;
+	unsigned long u_amp;
+};
+
+/**
+ * struct dev_pm_opp_icc_bw - Interconnect bandwidth values
+ * @avg:	Average bandwidth corresponding to this OPP (in icc units)
+ * @peak:	Peak bandwidth corresponding to this OPP (in icc units)
+ *
+ * This structure stores the bandwidth values for a single interconnect path.
+ */
+struct dev_pm_opp_icc_bw {
+	u32 avg;
+	u32 peak;
+};
+
+/**
+ * struct dev_pm_opp_info - OPP freq/voltage/current values
+ * @rate:	Target clk rate in hz
+ * @supplies:	Array of voltage/current values for all power supplies
+ *
+ * This structure stores the freq/voltage/current values for a single OPP.
+ */
+struct dev_pm_opp_info {
+	unsigned long rate;
+	struct dev_pm_opp_supply *supplies;
+};
+
+/**
+ * struct dev_pm_set_opp_data - Set OPP data
+ * @old_opp:	Old OPP info
+ * @new_opp:	New OPP info
+ * @regulators:	Array of regulator pointers
+ * @regulator_count: Number of regulators
+ * @clk:	Pointer to clk
+ * @dev:	Pointer to the struct device
+ *
+ * This structure contains all information required for setting an OPP.
+ */
+struct dev_pm_set_opp_data {
+	struct dev_pm_opp_info old_opp;
+	struct dev_pm_opp_info new_opp;
+
+	struct regulator **regulators;
+	unsigned int regulator_count;
+	struct clk *clk;
+	struct device *dev;
+};
+
+#if defined(CONFIG_PM_OPP)
+
+struct opp_table *dev_pm_opp_get_opp_table(struct device *dev);
+struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index);
+void dev_pm_opp_put_opp_table(struct opp_table *opp_table);
+
+unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
+
+unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
+
+unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);
+
+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);
+unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev);
+
+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_level_exact(struct device *dev,
+					       unsigned int level);
+
+struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
+					      unsigned long *freq);
+struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
+						     unsigned long u_volt);
+
+struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
+					     unsigned long *freq);
+void dev_pm_opp_put(struct dev_pm_opp *opp);
+
+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);
+void dev_pm_opp_remove_all_dynamic(struct device *dev);
+
+int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+			      unsigned long u_volt, unsigned long u_volt_min,
+			      unsigned long u_volt_max);
+
+int dev_pm_opp_enable(struct device *dev, unsigned long freq);
+
+int dev_pm_opp_disable(struct device *dev, unsigned long freq);
+
+int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb);
+int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb);
+
+struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
+void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
+struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name);
+void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
+struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
+void dev_pm_opp_put_regulators(struct opp_table *opp_table);
+struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name);
+void dev_pm_opp_put_clkname(struct opp_table *opp_table);
+struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
+void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
+struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
+void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
+int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
+int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
+int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp);
+int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
+int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
+void dev_pm_opp_remove_table(struct device *dev);
+void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
+#else
+static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {}
+
+static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
+{
+	return 0;
+}
+
+static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
+{
+	return 0;
+}
+
+static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
+{
+	return 0;
+}
+
+static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
+{
+	return false;
+}
+
+static inline int dev_pm_opp_get_opp_count(struct device *dev)
+{
+	return 0;
+}
+
+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 unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev)
+{
+	return 0;
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
+					unsigned long freq, bool available)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
+					unsigned int level)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
+					unsigned long *freq)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
+					unsigned long u_volt)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
+					unsigned long *freq)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {}
+
+static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
+					unsigned long u_volt)
+{
+	return -ENOTSUPP;
+}
+
+static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
+{
+}
+
+static inline void dev_pm_opp_remove_all_dynamic(struct device *dev)
+{
+}
+
+static inline int
+dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+			  unsigned long u_volt, unsigned long u_volt_min,
+			  unsigned long u_volt_max)
+{
+	return 0;
+}
+
+static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
+{
+	return 0;
+}
+
+static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
+{
+	return 0;
+}
+
+static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb)
+{
+	return -ENOTSUPP;
+}
+
+static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb)
+{
+	return -ENOTSUPP;
+}
+
+static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
+							    const u32 *versions,
+							    unsigned int count)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}
+
+static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
+			int (*set_opp)(struct dev_pm_set_opp_data *data))
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {}
+
+static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {}
+
+static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
+
+static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}
+
+static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {}
+
+static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate)
+{
+	return -ENOTSUPP;
+}
+
+static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
+{
+	return -ENOTSUPP;
+}
+
+static inline int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
+{
+	return -ENOTSUPP;
+}
+
+static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
+{
+	return -EINVAL;
+}
+
+static inline void dev_pm_opp_remove_table(struct device *dev)
+{
+}
+
+static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
+{
+}
+
+#endif		/* CONFIG_PM_OPP */
+
+#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);
+int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
+struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);
+struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp);
+int of_get_required_opp_performance_state(struct device_node *np, int index);
+int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_table *opp_table);
+int dev_pm_opp_of_register_em(struct device *dev, struct cpumask *cpus);
+static inline void dev_pm_opp_of_unregister_em(struct device *dev)
+{
+	em_dev_unregister_perf_domain(dev);
+}
+#else
+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)
+{
+}
+
+static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
+{
+	return -ENOTSUPP;
+}
+
+static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
+{
+}
+
+static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
+{
+	return -ENOTSUPP;
+}
+
+static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+{
+	return NULL;
+}
+
+static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)
+{
+	return NULL;
+}
+
+static inline int dev_pm_opp_of_register_em(struct device *dev,
+					    struct cpumask *cpus)
+{
+	return -ENOTSUPP;
+}
+
+static inline void dev_pm_opp_of_unregister_em(struct device *dev)
+{
+}
+
+static inline int of_get_required_opp_performance_state(struct device_node *np, int index)
+{
+	return -ENOTSUPP;
+}
+
+static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_table *opp_table)
+{
+	return -ENOTSUPP;
+}
+#endif
+
+#endif		/* __LINUX_OPP_H__ */