write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/opp/opp.h
..
..
@@ -1,3 +1,4 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
1
2
 /*
2
3
  * Generic OPP Interface
3
4
  *
..
..
@@ -5,16 +6,13 @@
5
6
  *	Nishanth Menon
6
7
  *	Romit Dasgupta
7
8
  *	Kevin Hilman
8
- *
9
- * This program is free software; you can redistribute it and/or modify
10
- * it under the terms of the GNU General Public License version 2 as
11
- * published by the Free Software Foundation.
12
9
  */
13
10
 
14
11
 #ifndef __DRIVER_OPP_H__
15
12
 #define __DRIVER_OPP_H__
16
13
 
17
14
 #include <linux/device.h>
15
+#include <linux/interconnect.h>
18
16
 #include <linux/kernel.h>
19
17
 #include <linux/kref.h>
20
18
 #include <linux/list.h>
..
..
@@ -60,9 +58,12 @@
60
58
  * @suspend:	true if suspend OPP
61
59
  * @pstate: Device's power domain's performance state.
62
60
  * @rate:	Frequency in hertz
61
+ * @level:	Performance level
63
62
  * @supplies:	Power supplies voltage/current values
63
+ * @bandwidth:	Interconnect bandwidth values
64
64
  * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's
65
65
  *		frequency from any other OPP's frequency.
66
+ * @required_opps: List of OPPs that are required by this OPP.
66
67
  * @opp_table:	points back to the opp_table struct this opp belongs to
67
68
  * @np:		OPP's device node.
68
69
  * @dentry:	debugfs dentry pointer (per opp)
..
..
@@ -79,11 +80,14 @@
79
80
 	bool suspend;
80
81
 	unsigned int pstate;
81
82
 	unsigned long rate;
83
+	unsigned int level;
82
84
 
83
85
 	struct dev_pm_opp_supply *supplies;
86
+	struct dev_pm_opp_icc_bw *bandwidth;
84
87
 
85
88
 	unsigned long clock_latency_ns;
86
89
 
90
+	struct dev_pm_opp **required_opps;
87
91
 	struct opp_table *opp_table;
88
92
 
89
93
 	struct device_node *np;
..
..
@@ -126,11 +130,17 @@
126
130
  * @dev_list:	list of devices that share these OPPs
127
131
  * @opp_list:	table of opps
128
132
  * @kref:	for reference count of the table.
129
- * @lock:	mutex protecting the opp_list.
133
+ * @lock:	mutex protecting the opp_list and dev_list.
130
134
  * @np:		struct device_node pointer for opp's DT node.
131
135
  * @clock_latency_ns_max: Max clock latency in nanoseconds.
136
+ * @parsed_static_opps: Count of devices for which OPPs are initialized from DT.
132
137
  * @shared_opp: OPP is shared between multiple devices.
133
138
  * @suspend_opp: Pointer to OPP to be used during device suspend.
139
+ * @genpd_virt_dev_lock: Mutex protecting the genpd virtual device pointers.
140
+ * @genpd_virt_devs: List of virtual devices for multiple genpd support.
141
+ * @required_opp_tables: List of device OPP tables that are required by OPPs in
142
+ *		this table.
143
+ * @required_opp_count: Number of required devices.
134
144
  * @supported_hw: Array of version number to support.
135
145
  * @supported_hw_count: Number of elements in supported_hw array.
136
146
  * @prop_name: A name to postfix to many DT properties, while parsing them.
..
..
@@ -139,7 +149,11 @@
139
149
  * @regulator_count: Number of power supply regulators. Its value can be -1
140
150
  * (uninitialized), 0 (no opp-microvolt property) or > 0 (has opp-microvolt
141
151
  * property).
152
+ * @paths: Interconnect path handles
153
+ * @path_count: Number of interconnect paths
154
+ * @enabled: Set to true if the device's resources are enabled/configured.
142
155
  * @genpd_performance_state: Device's power domain support performance state.
156
+ * @is_genpd: Marks if the OPP table belongs to a genpd.
143
157
  * @set_opp: Platform specific set_opp callback
144
158
  * @set_opp_data: Data to be passed to set_opp callback
145
159
  * @dentry:	debugfs dentry pointer of the real device directory (not links).
..
..
@@ -166,8 +180,14 @@
166
180
 	/* For backward compatibility with v1 bindings */
167
181
 	unsigned int voltage_tolerance_v1;
168
182
 
183
+	unsigned int parsed_static_opps;
169
184
 	enum opp_table_access shared_opp;
170
185
 	struct dev_pm_opp *suspend_opp;
186
+
187
+	struct mutex genpd_virt_dev_lock;
188
+	struct device **genpd_virt_devs;
189
+	struct opp_table **required_opp_tables;
190
+	unsigned int required_opp_count;
171
191
 
172
192
 	unsigned int *supported_hw;
173
193
 	unsigned int supported_hw_count;
..
..
@@ -175,7 +195,11 @@
175
195
 	struct clk *clk;
176
196
 	struct regulator **regulators;
177
197
 	int regulator_count;
198
+	struct icc_path **paths;
199
+	unsigned int path_count;
200
+	bool enabled;
178
201
 	bool genpd_performance_state;
202
+	bool is_genpd;
179
203
 
180
204
 	int (*set_opp)(struct dev_pm_set_opp_data *data);
181
205
 	struct dev_pm_set_opp_data *set_opp_data;
..
..
@@ -188,39 +212,47 @@
188
212
 
189
213
 /* Routines internal to opp core */
190
214
 void dev_pm_opp_get(struct dev_pm_opp *opp);
215
+bool _opp_remove_all_static(struct opp_table *opp_table);
191
216
 void _get_opp_table_kref(struct opp_table *opp_table);
192
217
 int _get_opp_count(struct opp_table *opp_table);
193
218
 struct opp_table *_find_opp_table(struct device *dev);
194
219
 struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table);
195
-void _dev_pm_opp_remove_table(struct opp_table *opp_table, struct device *dev, bool remove_all);
196
-void _dev_pm_opp_find_and_remove_table(struct device *dev, bool remove_all);
197
220
 struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table);
198
221
 void _opp_free(struct dev_pm_opp *opp);
222
+int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2);
199
223
 int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, bool rate_not_available);
200
224
 int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic);
201
-void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, bool of);
225
+void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu);
202
226
 struct opp_table *_add_opp_table(struct device *dev);
227
+void _put_opp_list_kref(struct opp_table *opp_table);
203
228
 
204
229
 #ifdef CONFIG_OF
205
-void _of_init_opp_table(struct opp_table *opp_table, struct device *dev);
230
+void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index);
231
+void _of_clear_opp_table(struct opp_table *opp_table);
232
+struct opp_table *_managed_opp(struct device *dev, int index);
233
+void _of_opp_free_required_opps(struct opp_table *opp_table,
234
+				struct dev_pm_opp *opp);
206
235
 #else
207
-static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev) {}
236
+static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index) {}
237
+static inline void _of_clear_opp_table(struct opp_table *opp_table) {}
238
+static inline struct opp_table *_managed_opp(struct device *dev, int index) { return NULL; }
239
+static inline void _of_opp_free_required_opps(struct opp_table *opp_table,
240
+					      struct dev_pm_opp *opp) {}
208
241
 #endif
209
242
 
210
243
 #ifdef CONFIG_DEBUG_FS
211
244
 void opp_debug_remove_one(struct dev_pm_opp *opp);
212
-int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
213
-int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
245
+void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
246
+void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
214
247
 void opp_debug_unregister(struct opp_device *opp_dev, struct opp_table *opp_table);
215
248
 #else
216
249
 static inline void opp_debug_remove_one(struct dev_pm_opp *opp) {}
217
250
 
218
-static inline int opp_debug_create_one(struct dev_pm_opp *opp,
219
-				       struct opp_table *opp_table)
220
-{ return 0; }
221
-static inline int opp_debug_register(struct opp_device *opp_dev,
222
-				     struct opp_table *opp_table)
223
-{ return 0; }
251
+static inline void opp_debug_create_one(struct dev_pm_opp *opp,
252
+					struct opp_table *opp_table) { }
253
+
254
+static inline void opp_debug_register(struct opp_device *opp_dev,
255
+				      struct opp_table *opp_table) { }
224
256
 
225
257
 static inline void opp_debug_unregister(struct opp_device *opp_dev,
226
258
 					struct opp_table *opp_table)