1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* OMAP Voltage Management Routines
*
* Author: Thara Gopinath <thara@ti.com>
*
* Copyright (C) 2009 Texas Instruments, Inc.
* Thara Gopinath <thara@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ARCH_ARM_MACH_OMAP2_VOLTAGE_H
#define __ARCH_ARM_MACH_OMAP2_VOLTAGE_H
#include <linux/err.h>
#include <linux/platform_data/voltage-omap.h>
#include "vc.h"
#include "vp.h"
struct powerdomain;
/* XXX document */
#define VOLTSCALE_VPFORCEUPDATE 1
#define VOLTSCALE_VCBYPASS 2
/*
* OMAP3 GENERIC setup times. Revisit to see if these needs to be
* passed from board or PMIC file
*/
#define OMAP3_CLKSETUP 0xff
#define OMAP3_VOLTOFFSET 0xff
#define OMAP3_VOLTSETUP2 0xff
/**
* struct omap_vfsm_instance - per-voltage manager FSM register/bitfield
* data
* @voltsetup_mask: SETUP_TIME* bitmask in the PRM_VOLTSETUP* register
* @voltsetup_reg: register offset of PRM_VOLTSETUP from PRM base
* @voltsetup_off_reg: register offset of PRM_VOLTSETUP_OFF from PRM base
*
* XXX What about VOLTOFFSET/VOLTCTRL?
*/
struct omap_vfsm_instance {
u32 voltsetup_mask;
u8 voltsetup_reg;
u8 voltsetup_off_reg;
};
/**
* struct voltagedomain - omap voltage domain global structure.
* @name: Name of the voltage domain which can be used as a unique identifier.
* @scalable: Whether or not this voltage domain is scalable
* @node: list_head linking all voltage domains
* @pwrdm_list: list_head linking all powerdomains in this voltagedomain
* @vc: pointer to VC channel associated with this voltagedomain
* @vp: pointer to VP associated with this voltagedomain
* @read: read a VC/VP register
* @write: write a VC/VP register
* @read: read-modify-write a VC/VP register
* @sys_clk: system clock name/frequency, used for various timing calculations
* @scale: function used to scale the voltage of the voltagedomain
* @nominal_volt: current nominal voltage for this voltage domain
* @volt_data: voltage table having the distinct voltages supported
* by the domain and other associated per voltage data.
*/
struct voltagedomain {
char *name;
bool scalable;
struct list_head node;
struct list_head pwrdm_list;
struct omap_vc_channel *vc;
const struct omap_vfsm_instance *vfsm;
struct omap_vp_instance *vp;
struct omap_voltdm_pmic *pmic;
struct omap_vp_param *vp_param;
struct omap_vc_param *vc_param;
/* VC/VP register access functions: SoC specific */
u32 (*read) (u8 offset);
void (*write) (u32 val, u8 offset);
u32 (*rmw)(u32 mask, u32 bits, u8 offset);
union {
const char *name;
u32 rate;
} sys_clk;
int (*scale) (struct voltagedomain *voltdm,
unsigned long target_volt);
u32 nominal_volt;
struct omap_volt_data *volt_data;
};
/* Min and max voltages from OMAP perspective */
#define OMAP3430_VP1_VLIMITTO_VDDMIN 850000
#define OMAP3430_VP1_VLIMITTO_VDDMAX 1425000
#define OMAP3430_VP2_VLIMITTO_VDDMIN 900000
#define OMAP3430_VP2_VLIMITTO_VDDMAX 1150000
#define OMAP3630_VP1_VLIMITTO_VDDMIN 900000
#define OMAP3630_VP1_VLIMITTO_VDDMAX 1350000
#define OMAP3630_VP2_VLIMITTO_VDDMIN 900000
#define OMAP3630_VP2_VLIMITTO_VDDMAX 1200000
#define OMAP4_VP_MPU_VLIMITTO_VDDMIN 830000
#define OMAP4_VP_MPU_VLIMITTO_VDDMAX 1410000
#define OMAP4_VP_IVA_VLIMITTO_VDDMIN 830000
#define OMAP4_VP_IVA_VLIMITTO_VDDMAX 1260000
#define OMAP4_VP_CORE_VLIMITTO_VDDMIN 830000
#define OMAP4_VP_CORE_VLIMITTO_VDDMAX 1200000
/**
* struct omap_voltdm_pmic - PMIC specific data required by voltage driver.
* @slew_rate: PMIC slew rate (in uv/us)
* @step_size: PMIC voltage step size (in uv)
* @i2c_slave_addr: I2C slave address of PMIC
* @volt_reg_addr: voltage configuration register address
* @cmd_reg_addr: command (on, on-LP, ret, off) configuration register address
* @i2c_high_speed: whether VC uses I2C high-speed mode to PMIC
* @i2c_mcode: master code value for I2C high-speed preamble transmission
* @vsel_to_uv: PMIC API to convert vsel value to actual voltage in uV.
* @uv_to_vsel: PMIC API to convert voltage in uV to vsel value.
*/
struct omap_voltdm_pmic {
int slew_rate;
int step_size;
u16 i2c_slave_addr;
u16 volt_reg_addr;
u16 cmd_reg_addr;
u8 vp_erroroffset;
u8 vp_vstepmin;
u8 vp_vstepmax;
u32 vddmin;
u32 vddmax;
u8 vp_timeout_us;
bool i2c_high_speed;
u32 i2c_pad_load;
u8 i2c_mcode;
unsigned long (*vsel_to_uv) (const u8 vsel);
u8 (*uv_to_vsel) (unsigned long uV);
};
struct omap_vp_param {
u32 vddmax;
u32 vddmin;
};
struct omap_vc_param {
u32 on;
u32 onlp;
u32 ret;
u32 off;
};
void omap_voltage_get_volttable(struct voltagedomain *voltdm,
struct omap_volt_data **volt_data);
struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm,
unsigned long volt);
int omap_voltage_register_pmic(struct voltagedomain *voltdm,
struct omap_voltdm_pmic *pmic);
void omap_change_voltscale_method(struct voltagedomain *voltdm,
int voltscale_method);
int omap_voltage_late_init(void);
extern void omap2xxx_voltagedomains_init(void);
extern void omap3xxx_voltagedomains_init(void);
extern void am33xx_voltagedomains_init(void);
extern void omap44xx_voltagedomains_init(void);
struct voltagedomain *voltdm_lookup(const char *name);
void voltdm_init(struct voltagedomain **voltdm_list);
int voltdm_add_pwrdm(struct voltagedomain *voltdm, struct powerdomain *pwrdm);
int voltdm_for_each(int (*fn)(struct voltagedomain *voltdm, void *user),
void *user);
int voltdm_for_each_pwrdm(struct voltagedomain *voltdm,
int (*fn)(struct voltagedomain *voltdm,
struct powerdomain *pwrdm));
int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt);
void voltdm_reset(struct voltagedomain *voltdm);
unsigned long voltdm_get_voltage(struct voltagedomain *voltdm);
#endif
|
