1 /* arch/arm/mach-rk30/rk30_dvfs.h
3 * Copyright (C) 2012 ROCKCHIP, Inc.
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
18 #include <linux/device.h>
19 #include <linux/clk-provider.h>
22 typedef int (*dvfs_set_rate_callback)(struct dvfs_node *clk_dvfs_node, unsigned long rate);
23 typedef int (*clk_set_rate_callback)(struct clk *clk, unsigned long rate);
26 * struct vd_node: To Store All Voltage Domains' info
27 * @name: Voltage Domain's Name
28 * @regulator_name: Voltage domain's regulator name
29 * @cur_volt: Voltage Domain's Current Voltage
30 * @regulator: Voltage Domain's regulator point
31 * @node: Point of he Voltage Domain List Node
32 * @pd_list: Head of Power Domain List Belongs to This Voltage Domain
33 * @req_volt_list: The list of clocks requests
35 * @vd_dvfs_target: Callback function
37 #define VD_VOL_LIST_CNT (200)
38 #define VD_LIST_RELATION_L 0
39 #define VD_LIST_RELATION_H 1
43 const char *regulator_name;
44 int volt_time_flag;// =0 ,is no initing checking ,>0 ,support,<0 not support
45 int mode_flag;// =0 ,is no initing checking ,>0 ,support,<0 not support
49 struct regulator *regulator;
50 struct list_head node;
51 struct list_head pd_list;
53 dvfs_set_rate_callback vd_dvfs_target;
54 unsigned int n_voltages;
55 int volt_list[VD_VOL_LIST_CNT];
59 * struct pd_node: To Store All Power Domains' info
60 * @name: Power Domain's Name
61 * @cur_volt: Power Domain's Current Voltage
62 * @pd_status: Power Domain's status
63 * @vd: Voltage Domain the power domain belongs to
64 * @pd_clk: Look power domain as a clock
65 * @node: List node to Voltage Domain
66 * @clk_list: Head of Power Domain's Clocks List
71 unsigned char pd_status;
73 struct list_head node;
74 struct list_head clk_list;
78 * struct dvfs_node: To Store All dvfs clocks' info
79 * @name: Dvfs clock's Name
80 * @set_freq: Dvfs clock's Current Frequency
81 * @set_volt: Dvfs clock's Current Voltage
82 * @enable_dvfs: Sign if DVFS clock enable
83 * @clk: System clk's point
84 * @pd: Power Domains dvfs clock belongs to
85 * @vd: Voltage Domains dvfs clock belongs to
86 * @dvfs_nb: Notify list
87 * @dvfs_table: Frequency and voltage table for dvfs
88 * @clk_dvfs_target: Callback function
91 struct device dev; //for opp
96 int freq_limit_en; //sign if use limit frequency
97 unsigned int min_rate; //limit min frequency
98 unsigned int max_rate; //limit max frequency
99 unsigned long last_set_rate;
100 unsigned int temp_channel;
101 unsigned long temp_limit_rate;
105 struct list_head node;
106 struct notifier_block *dvfs_nb;
107 struct cpufreq_frequency_table *dvfs_table;
108 struct cpufreq_frequency_table *per_temp_limit_table;
109 struct cpufreq_frequency_table *nor_temp_limit_table;
110 clk_set_rate_callback clk_dvfs_target;
115 #define DVFS_MHZ (1000*1000)
116 #define DVFS_KHZ (1000)
118 #define DVFS_V (1000*1000)
119 #define DVFS_MV (1000)
121 #define DVFS_DBG(fmt, args...) printk(KERN_INFO "DVFS DBG:\t"fmt, ##args)
123 #define DVFS_DBG(fmt, args...) {while(0);}
126 #define DVFS_ERR(fmt, args...) printk(KERN_ERR "DVFS ERR:\t"fmt, ##args)
127 #define DVFS_LOG(fmt, args...) printk(KERN_DEBUG "DVFS LOG:\t"fmt, ##args)
128 #define DVFS_WARNING(fmt, args...) printk(KERN_WARNING "DVFS WARNING:\t"fmt, ##args)
130 #define DVFS_SET_VOLT_FAILURE 1
131 #define DVFS_SET_VOLT_SUCCESS 0
133 #define dvfs_regulator_get(dev,id) regulator_get((dev),(id))
134 #define dvfs_regulator_put(regu) regulator_put((regu))
135 #define dvfs_regulator_set_voltage(regu,min_uV,max_uV) regulator_set_voltage((regu),(min_uV),(max_uV))
136 #define dvfs_regulator_get_voltage(regu) regulator_get_voltage((regu))
137 #define dvfs_regulator_set_voltage_time(regu, old_uV, new_uV) regulator_set_voltage_time((regu), (old_uV), (new_uV))
138 #define dvfs_regulator_set_mode(regu, mode) regulator_set_mode((regu), (mode))
139 #define dvfs_regulator_get_mode(regu) regulator_get_mode((regu))
140 #define dvfs_regulator_list_voltage(regu,selector) regulator_list_voltage((regu),(selector))
141 #define dvfs_regulator_count_voltages(regu) regulator_count_voltages((regu))
143 #define clk_dvfs_node_get(a,b) clk_get((a),(b))
144 #define clk_dvfs_node_get_rate_kz(a) (clk_get_rate((a))/1000)
145 #define clk_dvfs_node_set_rate(a,b) clk_set_rate((a),(b))
147 typedef void (*avs_init_fn)(void);
148 typedef u8 (*avs_get_val_fn)(void);
150 avs_init_fn avs_init;
151 avs_get_val_fn avs_get_val;
155 struct dvfs_node *clk_get_dvfs_node(char *clk_name);
156 void clk_put_dvfs_node(struct dvfs_node *clk_dvfs_node);
157 unsigned long dvfs_clk_get_rate(struct dvfs_node *clk_dvfs_node);
158 unsigned long dvfs_clk_get_last_set_rate(struct dvfs_node *clk_dvfs_node);
159 unsigned long dvfs_clk_round_rate(struct dvfs_node *clk_dvfs_node, unsigned long rate);
160 int dvfs_clk_set_rate(struct dvfs_node *clk_dvfs_node, unsigned long rate);
161 int dvfs_clk_enable(struct dvfs_node *clk_dvfs_node);
162 void dvfs_clk_disable(struct dvfs_node *clk_dvfs_node);
163 int dvfs_clk_prepare_enable(struct dvfs_node *clk_dvfs_node);
164 void dvfs_clk_disable_unprepare(struct dvfs_node *clk_dvfs_node);
165 int dvfs_set_freq_volt_table(struct dvfs_node *clk_dvfs_node, struct cpufreq_frequency_table *table);
166 int dvfs_clk_register_set_rate_callback(struct dvfs_node *clk_dvfs_node, clk_set_rate_callback clk_dvfs_target);
167 int dvfs_clk_enable_limit(struct dvfs_node *clk_dvfs_node, unsigned int min_rate, unsigned max_rate);
168 int dvfs_clk_get_limit(struct dvfs_node *clk_dvfs_node, unsigned int *min_rate, unsigned int *max_rate) ;
169 int dvfs_clk_disable_limit(struct dvfs_node *clk_dvfs_node);
170 int clk_disable_dvfs(struct dvfs_node *clk_dvfs_node);
171 int clk_enable_dvfs(struct dvfs_node *clk_dvfs_node);
172 void dvfs_disable_temp_limit(void);
173 struct cpufreq_frequency_table *dvfs_get_freq_volt_table(struct dvfs_node *clk_dvfs_node);
174 int rk_regist_vd(struct vd_node *vd);
175 int rk_regist_pd(struct pd_node *pd);
176 int rk_regist_clk(struct dvfs_node *clk_dvfs_node);
177 struct regulator *dvfs_get_regulator(char *regulator_name);
178 int of_dvfs_init(void);
182 static inline struct dvfs_node *clk_get_dvfs_node(char *clk_name){ return NULL; };
183 static inline void clk_put_dvfs_node(struct dvfs_node *clk_dvfs_node){ return; };
184 static inline unsigned long dvfs_clk_get_rate(struct dvfs_node *clk_dvfs_node){ return 0; };
185 static inline unsigned long dvfs_clk_get_last_set_rate(struct dvfs_node *clk_dvfs_node){ return 0; };
186 static inline unsigned long dvfs_clk_round_rate(struct dvfs_node *clk_dvfs_node, unsigned long rate) { return 0; };
187 static inline int dvfs_clk_set_rate(struct dvfs_node *clk_dvfs_node, unsigned long rate){ return 0; };
188 static inline int dvfs_clk_enable(struct dvfs_node *clk_dvfs_node){ return 0; };
189 static inline void dvfs_clk_disable(struct dvfs_node *clk_dvfs_node){ };
190 static inline int dvfs_clk_prepare_enable(struct dvfs_node *clk_dvfs_node){ return 0; };
191 static inline void dvfs_clk_disable_unprepare(struct dvfs_node *clk_dvfs_node){ };
192 static inline int dvfs_set_freq_volt_table(struct dvfs_node *clk_dvfs_node, struct cpufreq_frequency_table *table){ return 0; };
193 static inline int dvfs_clk_register_set_rate_callback(struct dvfs_node *clk_dvfs_node, clk_set_rate_callback clk_dvfs_target){ return 0; };
194 static inline int dvfs_clk_enable_limit(struct dvfs_node *clk_dvfs_node, unsigned int min_rate, unsigned max_rate){ return 0; };
195 static inline int dvfs_clk_get_limit(struct dvfs_node *clk_dvfs_node, unsigned int *min_rate, unsigned int *max_rate) { return 0; };
196 static inline int dvfs_clk_disable_limit(struct dvfs_node *clk_dvfs_node){ return 0; };
197 static inline int clk_disable_dvfs(struct dvfs_node *clk_dvfs_node){ return 0; };
198 static inline int clk_enable_dvfs(struct dvfs_node *clk_dvfs_node){ return 0; };
199 static inline void dvfs_disable_temp_limit(void) {};
200 static inline struct cpufreq_frequency_table *dvfs_get_freq_volt_table(struct dvfs_node *clk_dvfs_node){ return NULL; };
201 static inline int rk_regist_vd(struct vd_node *vd){ return 0; };
202 static inline int rk_regist_pd(struct pd_node *pd){ return 0; };
203 static inline int rk_regist_clk(struct dvfs_node *clk_dvfs_node){ return 0; };
204 static inline struct regulator *dvfs_get_regulator(char *regulator_name){ return NULL; };
205 static inline int of_dvfs_init(void){ return 0; };