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 int last_set_rate;
103 struct list_head node;
104 struct notifier_block *dvfs_nb;
105 struct cpufreq_frequency_table *dvfs_table;
106 struct cpufreq_frequency_table *condition_freq_table;
107 clk_set_rate_callback clk_dvfs_target;
112 #define DVFS_MHZ (1000*1000)
113 #define DVFS_KHZ (1000)
115 #define DVFS_V (1000*1000)
116 #define DVFS_MV (1000)
118 #define DVFS_DBG(fmt, args...) printk(KERN_INFO "DVFS DBG:\t"fmt, ##args)
120 #define DVFS_DBG(fmt, args...) {while(0);}
123 #define DVFS_ERR(fmt, args...) printk(KERN_ERR "DVFS ERR:\t"fmt, ##args)
124 #define DVFS_LOG(fmt, args...) printk(KERN_DEBUG "DVFS LOG:\t"fmt, ##args)
125 #define DVFS_WARNING(fmt, args...) printk(KERN_WARNING "DVFS WARNING:\t"fmt, ##args)
127 #define DVFS_SET_VOLT_FAILURE 1
128 #define DVFS_SET_VOLT_SUCCESS 0
130 #define dvfs_regulator_get(dev,id) regulator_get((dev),(id))
131 #define dvfs_regulator_put(regu) regulator_put((regu))
132 #define dvfs_regulator_set_voltage(regu,min_uV,max_uV) regulator_set_voltage((regu),(min_uV),(max_uV))
133 #define dvfs_regulator_get_voltage(regu) regulator_get_voltage((regu))
134 #define dvfs_regulator_set_voltage_time(regu, old_uV, new_uV) regulator_set_voltage_time((regu), (old_uV), (new_uV))
135 #define dvfs_regulator_set_mode(regu, mode) regulator_set_mode((regu), (mode))
136 #define dvfs_regulator_get_mode(regu) regulator_get_mode((regu))
137 #define dvfs_regulator_list_voltage(regu,selector) regulator_list_voltage((regu),(selector))
138 #define dvfs_regulator_count_voltages(regu) regulator_count_voltages((regu))
140 #define clk_dvfs_node_get(a,b) clk_get((a),(b))
141 #define clk_dvfs_node_get_rate_kz(a) (clk_get_rate((a))/1000)
142 #define clk_dvfs_node_set_rate(a,b) clk_set_rate((a),(b))
144 typedef void (*avs_init_fn)(void);
145 typedef u8 (*avs_get_val_fn)(void);
147 avs_init_fn avs_init;
148 avs_get_val_fn avs_get_val;
152 struct dvfs_node *clk_get_dvfs_node(char *clk_name);
153 void clk_put_dvfs_node(struct dvfs_node *clk_dvfs_node);
154 unsigned long dvfs_clk_get_rate(struct dvfs_node *clk_dvfs_node);
155 int dvfs_clk_set_rate(struct dvfs_node *clk_dvfs_node, unsigned long rate);
156 int dvfs_clk_enable(struct dvfs_node *clk_dvfs_node);
157 void dvfs_clk_disable(struct dvfs_node *clk_dvfs_node);
158 int dvfs_clk_prepare_enable(struct dvfs_node *clk_dvfs_node);
159 void dvfs_clk_disable_unprepare(struct dvfs_node *clk_dvfs_node);
160 int dvfs_set_freq_volt_table(struct dvfs_node *clk_dvfs_node, struct cpufreq_frequency_table *table);
161 int dvfs_clk_register_set_rate_callback(struct dvfs_node *clk_dvfs_node, clk_set_rate_callback clk_dvfs_target);
162 int dvfs_clk_enable_limit(struct dvfs_node *clk_dvfs_node, unsigned int min_rate, unsigned max_rate);
163 int dvfs_clk_disable_limit(struct dvfs_node *clk_dvfs_node);
164 int clk_disable_dvfs(struct dvfs_node *clk_dvfs_node);
165 int clk_enable_dvfs(struct dvfs_node *clk_dvfs_node);
166 struct cpufreq_frequency_table *dvfs_get_freq_volt_table(struct dvfs_node *clk_dvfs_node);
167 int rk_regist_vd(struct vd_node *vd);
168 int rk_regist_pd(struct pd_node *pd);
169 int rk_regist_clk(struct dvfs_node *clk_dvfs_node);
170 struct regulator *dvfs_get_regulator(char *regulator_name);
171 int of_dvfs_init(void);
175 static inline struct dvfs_node *clk_get_dvfs_node(char *clk_name){ return NULL; };
176 static inline void clk_put_dvfs_node(struct dvfs_node *clk_dvfs_node){ return; };
177 static inline unsigned long dvfs_clk_get_rate(struct dvfs_node *clk_dvfs_node){ return 0; };
178 static inline int dvfs_clk_set_rate(struct dvfs_node *clk_dvfs_node, unsigned long rate){ return 0; };
179 static inline int dvfs_clk_enable(struct dvfs_node *clk_dvfs_node){ return 0; };
180 static inline void dvfs_clk_disable(struct dvfs_node *clk_dvfs_node){ };
181 static inline int dvfs_clk_prepare_enable(struct dvfs_node *clk_dvfs_node){ return 0; };
182 static inline void dvfs_clk_disable_unprepare(struct dvfs_node *clk_dvfs_node){ };
183 static inline int dvfs_set_freq_volt_table(struct dvfs_node *clk_dvfs_node, struct cpufreq_frequency_table *table){ return 0; };
184 static inline int dvfs_clk_register_set_rate_callback(struct dvfs_node *clk_dvfs_node, clk_set_rate_callback clk_dvfs_target){ return 0; };
185 static inline int dvfs_clk_enable_limit(struct dvfs_node *clk_dvfs_node, unsigned int min_rate, unsigned max_rate){ return 0; };
186 static inline int dvfs_clk_disable_limit(struct dvfs_node *clk_dvfs_node){ return 0; };
187 static inline int clk_disable_dvfs(struct dvfs_node *clk_dvfs_node){ return 0; };
188 static inline int clk_enable_dvfs(struct dvfs_node *clk_dvfs_node){ return 0; };
189 static inline struct cpufreq_frequency_table *dvfs_get_freq_volt_table(struct dvfs_node *clk_dvfs_node){ return NULL; };
190 static inline int rk_regist_vd(struct vd_node *vd){ return 0; };
191 static inline int rk_regist_pd(struct pd_node *pd){ return 0; };
192 static inline int rk_regist_clk(struct dvfs_node *clk_dvfs_node){ return 0; };
193 static inline struct regulator *dvfs_get_regulator(char *regulator_name){ return NULL; };
194 static inline int of_dvfs_init(void){ return 0; };