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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - arch/arm/mach-omap2/voltage.h
2 * OMAP Voltage Management Routines
4 * Author: Thara Gopinath <thara@ti.com>
6 * Copyright (C) 2009 Texas Instruments, Inc.
7 * Thara Gopinath <thara@ti.com>
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.
14 #ifndef __ARCH_ARM_MACH_OMAP2_VOLTAGE_H
15 #define __ARCH_ARM_MACH_OMAP2_VOLTAGE_H
17 #include <linux/err.h>
19 #include <linux/platform_data/voltage-omap.h>
27 * OMAP3 GENERIC setup times. Revisit to see if these needs to be
28 * passed from board or PMIC file
30 #define OMAP3_CLKSETUP 0xff
31 #define OMAP3_VOLTOFFSET 0xff
32 #define OMAP3_VOLTSETUP2 0xff
35 * struct omap_vfsm_instance - per-voltage manager FSM register/bitfield
37 * @voltsetup_mask: SETUP_TIME* bitmask in the PRM_VOLTSETUP* register
38 * @voltsetup_reg: register offset of PRM_VOLTSETUP from PRM base
39 * @voltsetup_off_reg: register offset of PRM_VOLTSETUP_OFF from PRM base
41 * XXX What about VOLTOFFSET/VOLTCTRL?
43 struct omap_vfsm_instance
{
50 * struct voltagedomain - omap voltage domain global structure.
51 * @name: Name of the voltage domain which can be used as a unique identifier.
52 * @scalable: Whether or not this voltage domain is scalable
53 * @node: list_head linking all voltage domains
54 * @vc: pointer to VC channel associated with this voltagedomain
55 * @vp: pointer to VP associated with this voltagedomain
56 * @read: read a VC/VP register
57 * @write: write a VC/VP register
58 * @read: read-modify-write a VC/VP register
59 * @sys_clk: system clock name/frequency, used for various timing calculations
60 * @scale: function used to scale the voltage of the voltagedomain
61 * @nominal_volt: current nominal voltage for this voltage domain
62 * @volt_data: voltage table having the distinct voltages supported
63 * by the domain and other associated per voltage data.
65 struct voltagedomain
{
68 struct list_head node
;
69 struct omap_vc_channel
*vc
;
70 const struct omap_vfsm_instance
*vfsm
;
71 struct omap_vp_instance
*vp
;
72 struct omap_voltdm_pmic
*pmic
;
73 struct omap_vp_param
*vp_param
;
74 struct omap_vc_param
*vc_param
;
76 /* VC/VP register access functions: SoC specific */
77 u32 (*read
) (u8 offset
);
78 void (*write
) (u32 val
, u8 offset
);
79 u32 (*rmw
)(u32 mask
, u32 bits
, u8 offset
);
86 int (*scale
) (struct voltagedomain
*voltdm
,
87 unsigned long target_volt
);
90 struct omap_volt_data
*volt_data
;
93 /* Min and max voltages from OMAP perspective */
94 #define OMAP3430_VP1_VLIMITTO_VDDMIN 850000
95 #define OMAP3430_VP1_VLIMITTO_VDDMAX 1425000
96 #define OMAP3430_VP2_VLIMITTO_VDDMIN 900000
97 #define OMAP3430_VP2_VLIMITTO_VDDMAX 1150000
99 #define OMAP3630_VP1_VLIMITTO_VDDMIN 900000
100 #define OMAP3630_VP1_VLIMITTO_VDDMAX 1350000
101 #define OMAP3630_VP2_VLIMITTO_VDDMIN 900000
102 #define OMAP3630_VP2_VLIMITTO_VDDMAX 1200000
104 #define OMAP4_VP_MPU_VLIMITTO_VDDMIN 830000
105 #define OMAP4_VP_MPU_VLIMITTO_VDDMAX 1410000
106 #define OMAP4_VP_IVA_VLIMITTO_VDDMIN 830000
107 #define OMAP4_VP_IVA_VLIMITTO_VDDMAX 1260000
108 #define OMAP4_VP_CORE_VLIMITTO_VDDMIN 830000
109 #define OMAP4_VP_CORE_VLIMITTO_VDDMAX 1200000
112 * struct omap_voltdm_pmic - PMIC specific data required by voltage driver.
113 * @slew_rate: PMIC slew rate (in uv/us)
114 * @step_size: PMIC voltage step size (in uv)
115 * @i2c_slave_addr: I2C slave address of PMIC
116 * @volt_reg_addr: voltage configuration register address
117 * @cmd_reg_addr: command (on, on-LP, ret, off) configuration register address
118 * @i2c_high_speed: whether VC uses I2C high-speed mode to PMIC
119 * @i2c_mcode: master code value for I2C high-speed preamble transmission
120 * @vsel_to_uv: PMIC API to convert vsel value to actual voltage in uV.
121 * @uv_to_vsel: PMIC API to convert voltage in uV to vsel value.
123 struct omap_voltdm_pmic
{
138 unsigned long (*vsel_to_uv
) (const u8 vsel
);
139 u8 (*uv_to_vsel
) (unsigned long uV
);
142 struct omap_vp_param
{
147 struct omap_vc_param
{
154 void omap_voltage_get_volttable(struct voltagedomain
*voltdm
,
155 struct omap_volt_data
**volt_data
);
156 struct omap_volt_data
*omap_voltage_get_voltdata(struct voltagedomain
*voltdm
,
158 int omap_voltage_register_pmic(struct voltagedomain
*voltdm
,
159 struct omap_voltdm_pmic
*pmic
);
160 int omap_voltage_late_init(void);
162 extern void omap2xxx_voltagedomains_init(void);
163 extern void omap3xxx_voltagedomains_init(void);
164 extern void omap44xx_voltagedomains_init(void);
165 extern void omap54xx_voltagedomains_init(void);
167 struct voltagedomain
*voltdm_lookup(const char *name
);
168 void voltdm_init(struct voltagedomain
**voltdm_list
);
169 int voltdm_add_pwrdm(struct voltagedomain
*voltdm
, struct powerdomain
*pwrdm
);
170 int voltdm_scale(struct voltagedomain
*voltdm
, unsigned long target_volt
);
171 void voltdm_reset(struct voltagedomain
*voltdm
);
172 unsigned long voltdm_get_voltage(struct voltagedomain
*voltdm
);