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2f34ce81 TG |
1 | /* |
2 | * OMAP Voltage Management Routines | |
3 | * | |
4 | * Author: Thara Gopinath <thara@ti.com> | |
5 | * | |
6 | * Copyright (C) 2009 Texas Instruments, Inc. | |
7 | * Thara Gopinath <thara@ti.com> | |
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 | */ | |
13 | ||
14 | #ifndef __ARCH_ARM_MACH_OMAP2_VOLTAGE_H | |
15 | #define __ARCH_ARM_MACH_OMAP2_VOLTAGE_H | |
16 | ||
faacebc5 SS |
17 | #include <linux/err.h> |
18 | ||
2203747c | 19 | #include <linux/platform_data/voltage-omap.h> |
fa60be6e | 20 | |
c0718df4 PW |
21 | #include "vc.h" |
22 | #include "vp.h" | |
23 | ||
e69c22b1 KH |
24 | struct powerdomain; |
25 | ||
c0718df4 | 26 | /* XXX document */ |
2f34ce81 TG |
27 | #define VOLTSCALE_VPFORCEUPDATE 1 |
28 | #define VOLTSCALE_VCBYPASS 2 | |
29 | ||
30 | /* | |
31 | * OMAP3 GENERIC setup times. Revisit to see if these needs to be | |
32 | * passed from board or PMIC file | |
33 | */ | |
34 | #define OMAP3_CLKSETUP 0xff | |
35 | #define OMAP3_VOLTOFFSET 0xff | |
36 | #define OMAP3_VOLTSETUP2 0xff | |
37 | ||
c0718df4 | 38 | /** |
5892bb1f | 39 | * struct omap_vfsm_instance - per-voltage manager FSM register/bitfield |
c0718df4 PW |
40 | * data |
41 | * @voltsetup_mask: SETUP_TIME* bitmask in the PRM_VOLTSETUP* register | |
42 | * @voltsetup_reg: register offset of PRM_VOLTSETUP from PRM base | |
27c16b70 | 43 | * @voltsetup_off_reg: register offset of PRM_VOLTSETUP_OFF from PRM base |
c0718df4 PW |
44 | * |
45 | * XXX What about VOLTOFFSET/VOLTCTRL? | |
c0718df4 | 46 | */ |
5892bb1f | 47 | struct omap_vfsm_instance { |
c0718df4 PW |
48 | u32 voltsetup_mask; |
49 | u8 voltsetup_reg; | |
27c16b70 | 50 | u8 voltsetup_off_reg; |
c0718df4 | 51 | }; |
bd38107b | 52 | |
2f34ce81 TG |
53 | /** |
54 | * struct voltagedomain - omap voltage domain global structure. | |
81a60482 | 55 | * @name: Name of the voltage domain which can be used as a unique identifier. |
37efca7e | 56 | * @scalable: Whether or not this voltage domain is scalable |
81a60482 | 57 | * @node: list_head linking all voltage domains |
e69c22b1 | 58 | * @pwrdm_list: list_head linking all powerdomains in this voltagedomain |
d84adcf4 | 59 | * @vc: pointer to VC channel associated with this voltagedomain |
b7ea803e | 60 | * @vp: pointer to VP associated with this voltagedomain |
4bcc475e KH |
61 | * @read: read a VC/VP register |
62 | * @write: write a VC/VP register | |
63 | * @read: read-modify-write a VC/VP register | |
0e2f3d9c | 64 | * @sys_clk: system clock name/frequency, used for various timing calculations |
0f01565a | 65 | * @scale: function used to scale the voltage of the voltagedomain |
7590f608 | 66 | * @nominal_volt: current nominal voltage for this voltage domain |
e3277880 KH |
67 | * @volt_data: voltage table having the distinct voltages supported |
68 | * by the domain and other associated per voltage data. | |
2f34ce81 TG |
69 | */ |
70 | struct voltagedomain { | |
71 | char *name; | |
37efca7e | 72 | bool scalable; |
81a60482 | 73 | struct list_head node; |
e69c22b1 | 74 | struct list_head pwrdm_list; |
d84adcf4 | 75 | struct omap_vc_channel *vc; |
5892bb1f | 76 | const struct omap_vfsm_instance *vfsm; |
b7ea803e | 77 | struct omap_vp_instance *vp; |
ce8ebe0d | 78 | struct omap_voltdm_pmic *pmic; |
8b5d8c0d TK |
79 | struct omap_vp_param *vp_param; |
80 | struct omap_vc_param *vc_param; | |
d84adcf4 | 81 | |
4bcc475e KH |
82 | /* VC/VP register access functions: SoC specific */ |
83 | u32 (*read) (u8 offset); | |
84 | void (*write) (u32 val, u8 offset); | |
85 | u32 (*rmw)(u32 mask, u32 bits, u8 offset); | |
86 | ||
0e2f3d9c KH |
87 | union { |
88 | const char *name; | |
89 | u32 rate; | |
90 | } sys_clk; | |
91 | ||
0f01565a KH |
92 | int (*scale) (struct voltagedomain *voltdm, |
93 | unsigned long target_volt); | |
94 | ||
e3277880 KH |
95 | u32 nominal_volt; |
96 | struct omap_volt_data *volt_data; | |
2f34ce81 TG |
97 | }; |
98 | ||
f2a0dfef NM |
99 | /* Min and max voltages from OMAP perspective */ |
100 | #define OMAP3430_VP1_VLIMITTO_VDDMIN 850000 | |
101 | #define OMAP3430_VP1_VLIMITTO_VDDMAX 1425000 | |
102 | #define OMAP3430_VP2_VLIMITTO_VDDMIN 900000 | |
103 | #define OMAP3430_VP2_VLIMITTO_VDDMAX 1150000 | |
104 | ||
105 | #define OMAP3630_VP1_VLIMITTO_VDDMIN 900000 | |
106 | #define OMAP3630_VP1_VLIMITTO_VDDMAX 1350000 | |
107 | #define OMAP3630_VP2_VLIMITTO_VDDMIN 900000 | |
108 | #define OMAP3630_VP2_VLIMITTO_VDDMAX 1200000 | |
109 | ||
110 | #define OMAP4_VP_MPU_VLIMITTO_VDDMIN 830000 | |
111 | #define OMAP4_VP_MPU_VLIMITTO_VDDMAX 1410000 | |
112 | #define OMAP4_VP_IVA_VLIMITTO_VDDMIN 830000 | |
113 | #define OMAP4_VP_IVA_VLIMITTO_VDDMAX 1260000 | |
114 | #define OMAP4_VP_CORE_VLIMITTO_VDDMIN 830000 | |
115 | #define OMAP4_VP_CORE_VLIMITTO_VDDMAX 1200000 | |
116 | ||
2f34ce81 | 117 | /** |
ce8ebe0d | 118 | * struct omap_voltdm_pmic - PMIC specific data required by voltage driver. |
2f34ce81 TG |
119 | * @slew_rate: PMIC slew rate (in uv/us) |
120 | * @step_size: PMIC voltage step size (in uv) | |
ba112a4e | 121 | * @i2c_slave_addr: I2C slave address of PMIC |
e74e4405 KH |
122 | * @volt_reg_addr: voltage configuration register address |
123 | * @cmd_reg_addr: command (on, on-LP, ret, off) configuration register address | |
f5395480 KH |
124 | * @i2c_high_speed: whether VC uses I2C high-speed mode to PMIC |
125 | * @i2c_mcode: master code value for I2C high-speed preamble transmission | |
e4e021c5 KH |
126 | * @vsel_to_uv: PMIC API to convert vsel value to actual voltage in uV. |
127 | * @uv_to_vsel: PMIC API to convert voltage in uV to vsel value. | |
2f34ce81 | 128 | */ |
ce8ebe0d | 129 | struct omap_voltdm_pmic { |
2f34ce81 TG |
130 | int slew_rate; |
131 | int step_size; | |
ba112a4e | 132 | u16 i2c_slave_addr; |
e4e021c5 KH |
133 | u16 volt_reg_addr; |
134 | u16 cmd_reg_addr; | |
2f34ce81 TG |
135 | u8 vp_erroroffset; |
136 | u8 vp_vstepmin; | |
137 | u8 vp_vstepmax; | |
b254012b TK |
138 | u32 vddmin; |
139 | u32 vddmax; | |
2f34ce81 | 140 | u8 vp_timeout_us; |
f5395480 | 141 | bool i2c_high_speed; |
00bd228e | 142 | u32 i2c_pad_load; |
f5395480 | 143 | u8 i2c_mcode; |
2f34ce81 TG |
144 | unsigned long (*vsel_to_uv) (const u8 vsel); |
145 | u8 (*uv_to_vsel) (unsigned long uV); | |
146 | }; | |
147 | ||
8b5d8c0d TK |
148 | struct omap_vp_param { |
149 | u32 vddmax; | |
150 | u32 vddmin; | |
151 | }; | |
152 | ||
153 | struct omap_vc_param { | |
154 | u32 on; | |
155 | u32 onlp; | |
156 | u32 ret; | |
157 | u32 off; | |
158 | }; | |
159 | ||
2f34ce81 TG |
160 | void omap_voltage_get_volttable(struct voltagedomain *voltdm, |
161 | struct omap_volt_data **volt_data); | |
162 | struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm, | |
163 | unsigned long volt); | |
2f34ce81 | 164 | int omap_voltage_register_pmic(struct voltagedomain *voltdm, |
ce8ebe0d | 165 | struct omap_voltdm_pmic *pmic); |
2f34ce81 TG |
166 | void omap_change_voltscale_method(struct voltagedomain *voltdm, |
167 | int voltscale_method); | |
168 | int omap_voltage_late_init(void); | |
2f34ce81 | 169 | |
aae030fa | 170 | extern void omap2xxx_voltagedomains_init(void); |
81a60482 KH |
171 | extern void omap3xxx_voltagedomains_init(void); |
172 | extern void omap44xx_voltagedomains_init(void); | |
20d49e9c | 173 | extern void omap54xx_voltagedomains_init(void); |
81a60482 KH |
174 | |
175 | struct voltagedomain *voltdm_lookup(const char *name); | |
176 | void voltdm_init(struct voltagedomain **voltdm_list); | |
048a7034 | 177 | int voltdm_add_pwrdm(struct voltagedomain *voltdm, struct powerdomain *pwrdm); |
e69c22b1 KH |
178 | int voltdm_for_each(int (*fn)(struct voltagedomain *voltdm, void *user), |
179 | void *user); | |
180 | int voltdm_for_each_pwrdm(struct voltagedomain *voltdm, | |
181 | int (*fn)(struct voltagedomain *voltdm, | |
182 | struct powerdomain *pwrdm)); | |
5e5651be KH |
183 | int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt); |
184 | void voltdm_reset(struct voltagedomain *voltdm); | |
d5c12828 | 185 | unsigned long voltdm_get_voltage(struct voltagedomain *voltdm); |
2f34ce81 | 186 | #endif |