add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/opp/opp.h
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Generic OPP Interface
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  *
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@@ -5,16 +6,13 @@
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  *	Nishanth Menon
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  *	Romit Dasgupta
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  *	Kevin Hilman
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #ifndef __DRIVER_OPP_H__
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 #define __DRIVER_OPP_H__
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 #include <linux/device.h>
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+#include <linux/interconnect.h>
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 #include <linux/kernel.h>
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 #include <linux/kref.h>
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 #include <linux/list.h>
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@@ -60,9 +58,12 @@
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  * @suspend:	true if suspend OPP
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  * @pstate: Device's power domain's performance state.
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  * @rate:	Frequency in hertz
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+ * @level:	Performance level
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  * @supplies:	Power supplies voltage/current values
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+ * @bandwidth:	Interconnect bandwidth values
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  * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's
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  *		frequency from any other OPP's frequency.
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+ * @required_opps: List of OPPs that are required by this OPP.
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  * @opp_table:	points back to the opp_table struct this opp belongs to
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  * @np:		OPP's device node.
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  * @dentry:	debugfs dentry pointer (per opp)
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 	bool suspend;
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 	unsigned int pstate;
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 	unsigned long rate;
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+	unsigned int level;
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 	struct dev_pm_opp_supply *supplies;
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+	struct dev_pm_opp_icc_bw *bandwidth;
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 	unsigned long clock_latency_ns;
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+	struct dev_pm_opp **required_opps;
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 	struct opp_table *opp_table;
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 	struct device_node *np;
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@@ -126,11 +130,17 @@
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  * @dev_list:	list of devices that share these OPPs
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  * @opp_list:	table of opps
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  * @kref:	for reference count of the table.
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- * @lock:	mutex protecting the opp_list.
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+ * @lock:	mutex protecting the opp_list and dev_list.
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  * @np:		struct device_node pointer for opp's DT node.
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  * @clock_latency_ns_max: Max clock latency in nanoseconds.
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+ * @parsed_static_opps: Count of devices for which OPPs are initialized from DT.
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  * @shared_opp: OPP is shared between multiple devices.
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  * @suspend_opp: Pointer to OPP to be used during device suspend.
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+ * @genpd_virt_dev_lock: Mutex protecting the genpd virtual device pointers.
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+ * @genpd_virt_devs: List of virtual devices for multiple genpd support.
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+ * @required_opp_tables: List of device OPP tables that are required by OPPs in
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+ *		this table.
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+ * @required_opp_count: Number of required devices.
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  * @supported_hw: Array of version number to support.
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  * @supported_hw_count: Number of elements in supported_hw array.
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  * @prop_name: A name to postfix to many DT properties, while parsing them.
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@@ -139,7 +149,11 @@
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  * @regulator_count: Number of power supply regulators. Its value can be -1
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  * (uninitialized), 0 (no opp-microvolt property) or > 0 (has opp-microvolt
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  * property).
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+ * @paths: Interconnect path handles
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+ * @path_count: Number of interconnect paths
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+ * @enabled: Set to true if the device's resources are enabled/configured.
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  * @genpd_performance_state: Device's power domain support performance state.
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+ * @is_genpd: Marks if the OPP table belongs to a genpd.
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  * @set_opp: Platform specific set_opp callback
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  * @set_opp_data: Data to be passed to set_opp callback
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  * @dentry:	debugfs dentry pointer of the real device directory (not links).
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@@ -166,8 +180,14 @@
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 	/* For backward compatibility with v1 bindings */
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 	unsigned int voltage_tolerance_v1;
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+	unsigned int parsed_static_opps;
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 	enum opp_table_access shared_opp;
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 	struct dev_pm_opp *suspend_opp;
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+
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+	struct mutex genpd_virt_dev_lock;
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+	struct device **genpd_virt_devs;
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+	struct opp_table **required_opp_tables;
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+	unsigned int required_opp_count;
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 	unsigned int *supported_hw;
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 	unsigned int supported_hw_count;
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 	struct clk *clk;
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 	struct regulator **regulators;
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 	int regulator_count;
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+	struct icc_path **paths;
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+	unsigned int path_count;
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+	bool enabled;
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 	bool genpd_performance_state;
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+	bool is_genpd;
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 	int (*set_opp)(struct dev_pm_set_opp_data *data);
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 	struct dev_pm_set_opp_data *set_opp_data;
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@@ -188,39 +212,47 @@
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 /* Routines internal to opp core */
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 void dev_pm_opp_get(struct dev_pm_opp *opp);
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+bool _opp_remove_all_static(struct opp_table *opp_table);
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 void _get_opp_table_kref(struct opp_table *opp_table);
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 int _get_opp_count(struct opp_table *opp_table);
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 struct opp_table *_find_opp_table(struct device *dev);
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 struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table);
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-void _dev_pm_opp_remove_table(struct opp_table *opp_table, struct device *dev, bool remove_all);
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-void _dev_pm_opp_find_and_remove_table(struct device *dev, bool remove_all);
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 struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table);
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 void _opp_free(struct dev_pm_opp *opp);
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+int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2);
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 int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, bool rate_not_available);
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 int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic);
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-void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, bool of);
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+void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu);
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 struct opp_table *_add_opp_table(struct device *dev);
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+void _put_opp_list_kref(struct opp_table *opp_table);
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 #ifdef CONFIG_OF
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-void _of_init_opp_table(struct opp_table *opp_table, struct device *dev);
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+void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index);
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+void _of_clear_opp_table(struct opp_table *opp_table);
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+struct opp_table *_managed_opp(struct device *dev, int index);
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+void _of_opp_free_required_opps(struct opp_table *opp_table,
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+				struct dev_pm_opp *opp);
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 #else
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-static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev) {}
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+static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index) {}
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+static inline void _of_clear_opp_table(struct opp_table *opp_table) {}
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+static inline struct opp_table *_managed_opp(struct device *dev, int index) { return NULL; }
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+static inline void _of_opp_free_required_opps(struct opp_table *opp_table,
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+					      struct dev_pm_opp *opp) {}
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 #endif
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 #ifdef CONFIG_DEBUG_FS
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 void opp_debug_remove_one(struct dev_pm_opp *opp);
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-int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
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-int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
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+void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
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+void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
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 void opp_debug_unregister(struct opp_device *opp_dev, struct opp_table *opp_table);
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 #else
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 static inline void opp_debug_remove_one(struct dev_pm_opp *opp) {}
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-static inline int opp_debug_create_one(struct dev_pm_opp *opp,
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-				       struct opp_table *opp_table)
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-{ return 0; }
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-static inline int opp_debug_register(struct opp_device *opp_dev,
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-				     struct opp_table *opp_table)
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-{ return 0; }
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+static inline void opp_debug_create_one(struct dev_pm_opp *opp,
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+					struct opp_table *opp_table) { }
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+
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+static inline void opp_debug_register(struct opp_device *opp_dev,
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+				      struct opp_table *opp_table) { }
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 static inline void opp_debug_unregister(struct opp_device *opp_dev,
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 					struct opp_table *opp_table)