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/*
* 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>
#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
/* Voltage value defines */
#define OMAP3430_VDD_MPU_OPP1_UV 975000
#define OMAP3430_VDD_MPU_OPP2_UV 1075000
#define OMAP3430_VDD_MPU_OPP3_UV 1200000
#define OMAP3430_VDD_MPU_OPP4_UV 1270000
#define OMAP3430_VDD_MPU_OPP5_UV 1350000
#define OMAP3430_VDD_CORE_OPP1_UV 975000
#define OMAP3430_VDD_CORE_OPP2_UV 1050000
#define OMAP3430_VDD_CORE_OPP3_UV 1150000
#define OMAP3630_VDD_MPU_OPP50_UV 1012500
#define OMAP3630_VDD_MPU_OPP100_UV 1200000
#define OMAP3630_VDD_MPU_OPP120_UV 1325000
#define OMAP3630_VDD_MPU_OPP1G_UV 1375000
#define OMAP3630_VDD_CORE_OPP50_UV 1000000
#define OMAP3630_VDD_CORE_OPP100_UV 1200000
#define OMAP4430_VDD_MPU_OPP50_UV 930000
#define OMAP4430_VDD_MPU_OPP100_UV 1100000
#define OMAP4430_VDD_MPU_OPPTURBO_UV 1260000
#define OMAP4430_VDD_MPU_OPPNITRO_UV 1350000
#define OMAP4430_VDD_IVA_OPP50_UV 930000
#define OMAP4430_VDD_IVA_OPP100_UV 1100000
#define OMAP4430_VDD_IVA_OPPTURBO_UV 1260000
#define OMAP4430_VDD_CORE_OPP50_UV 930000
#define OMAP4430_VDD_CORE_OPP100_UV 1100000
/**
* struct voltagedomain - omap voltage domain global structure.
* @name: Name of the voltage domain which can be used as a unique
* identifier.
*/
struct voltagedomain {
char *name;
};
/**
* struct omap_volt_data - Omap voltage specific data.
* @voltage_nominal: The possible voltage value in uV
* @sr_efuse_offs: The offset of the efuse register(from system
* control module base address) from where to read
* the n-target value for the smartreflex module.
* @sr_errminlimit: Error min limit value for smartreflex. This value
* differs at differnet opp and thus is linked
* with voltage.
* @vp_errorgain: Error gain value for the voltage processor. This
* field also differs according to the voltage/opp.
*/
struct omap_volt_data {
u32 volt_nominal;
u32 sr_efuse_offs;
u8 sr_errminlimit;
u8 vp_errgain;
};
/**
* struct omap_volt_pmic_info - PMIC specific data required by voltage driver.
* @slew_rate: PMIC slew rate (in uv/us)
* @step_size: PMIC voltage step size (in uv)
* @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_volt_pmic_info {
int slew_rate;
int step_size;
u32 on_volt;
u32 onlp_volt;
u32 ret_volt;
u32 off_volt;
u16 volt_setup_time;
u8 vp_erroroffset;
u8 vp_vstepmin;
u8 vp_vstepmax;
u8 vp_vddmin;
u8 vp_vddmax;
u8 vp_timeout_us;
u8 i2c_slave_addr;
u8 pmic_reg;
unsigned long (*vsel_to_uv) (const u8 vsel);
u8 (*uv_to_vsel) (unsigned long uV);
};
/* Voltage processor register offsets */
struct vp_reg_offs {
u8 vpconfig;
u8 vstepmin;
u8 vstepmax;
u8 vlimitto;
u8 vstatus;
u8 voltage;
};
/* Voltage Processor bit field values, shifts and masks */
struct vp_reg_val {
/* PRM module */
u16 prm_mod;
/* VPx_VPCONFIG */
u32 vpconfig_erroroffset;
u16 vpconfig_errorgain;
u32 vpconfig_errorgain_mask;
u8 vpconfig_errorgain_shift;
u32 vpconfig_initvoltage_mask;
u8 vpconfig_initvoltage_shift;
u32 vpconfig_timeouten;
u32 vpconfig_initvdd;
u32 vpconfig_forceupdate;
u32 vpconfig_vpenable;
/* VPx_VSTEPMIN */
u8 vstepmin_stepmin;
u16 vstepmin_smpswaittimemin;
u8 vstepmin_stepmin_shift;
u8 vstepmin_smpswaittimemin_shift;
/* VPx_VSTEPMAX */
u8 vstepmax_stepmax;
u16 vstepmax_smpswaittimemax;
u8 vstepmax_stepmax_shift;
u8 vstepmax_smpswaittimemax_shift;
/* VPx_VLIMITTO */
u8 vlimitto_vddmin;
u8 vlimitto_vddmax;
u16 vlimitto_timeout;
u8 vlimitto_vddmin_shift;
u8 vlimitto_vddmax_shift;
u8 vlimitto_timeout_shift;
/* PRM_IRQSTATUS*/
u32 tranxdone_status;
};
/* Voltage controller registers and offsets */
struct vc_reg_info {
/* PRM module */
u16 prm_mod;
/* VC register offsets */
u8 smps_sa_reg;
u8 smps_volra_reg;
u8 bypass_val_reg;
u8 cmdval_reg;
u8 voltsetup_reg;
/*VC_SMPS_SA*/
u8 smps_sa_shift;
u32 smps_sa_mask;
/* VC_SMPS_VOL_RA */
u8 smps_volra_shift;
u32 smps_volra_mask;
/* VC_BYPASS_VAL */
u8 data_shift;
u8 slaveaddr_shift;
u8 regaddr_shift;
u32 valid;
/* VC_CMD_VAL */
u8 cmd_on_shift;
u8 cmd_onlp_shift;
u8 cmd_ret_shift;
u8 cmd_off_shift;
u32 cmd_on_mask;
/* PRM_VOLTSETUP */
u8 voltsetup_shift;
u32 voltsetup_mask;
};
/**
* omap_vdd_dep_volt - Table containing the parent vdd voltage and the
* dependent vdd voltage corresponding to it.
*
* @main_vdd_volt : The main vdd voltage
* @dep_vdd_volt : The voltage at which the dependent vdd should be
* when the main vdd is at <main_vdd_volt> voltage
*/
struct omap_vdd_dep_volt {
u32 main_vdd_volt;
u32 dep_vdd_volt;
};
/**
* omap_vdd_dep_info - Dependent vdd info
*
* @name : Dependent vdd name
* @voltdm : Dependent vdd pointer
* @dep_table : Table containing the dependent vdd voltage
* corresponding to every main vdd voltage.
*/
struct omap_vdd_dep_info {
char *name;
struct voltagedomain *voltdm;
struct omap_vdd_dep_volt *dep_table;
};
/**
* omap_vdd_info - Per Voltage Domain info
*
* @volt_data : voltage table having the distinct voltages supported
* by the domain and other associated per voltage data.
* @pmic_info : pmic specific parameters which should be populted by
* the pmic drivers.
* @vp_offs : structure containing the offsets for various
* vp registers
* @vp_reg : the register values, shifts, masks for various
* vp registers
* @vc_reg : structure containing various various vc registers,
* shifts, masks etc.
* @voltdm : pointer to the voltage domain structure
* @debug_dir : debug directory for this voltage domain.
* @curr_volt : current voltage for this vdd.
* @ocp_mod : The prm module for accessing the prm irqstatus reg.
* @prm_irqst_reg : prm irqstatus register.
* @vp_enabled : flag to keep track of whether vp is enabled or not
* @volt_scale : API to scale the voltage of the vdd.
*/
struct omap_vdd_info {
struct omap_volt_data *volt_data;
struct omap_volt_pmic_info *pmic_info;
struct vp_reg_offs vp_offs;
struct vp_reg_val vp_reg;
struct vc_reg_info vc_reg;
struct voltagedomain voltdm;
struct omap_vdd_dep_info *dep_vdd_info;
int nr_dep_vdd;
struct dentry *debug_dir;
u32 curr_volt;
u16 ocp_mod;
u8 prm_irqst_reg;
bool vp_enabled;
u32 (*read_reg) (u16 mod, u8 offset);
void (*write_reg) (u32 val, u16 mod, u8 offset);
int (*volt_scale) (struct omap_vdd_info *vdd,
unsigned long target_volt);
};
unsigned long omap_vp_get_curr_volt(struct voltagedomain *voltdm);
void omap_vp_enable(struct voltagedomain *voltdm);
void omap_vp_disable(struct voltagedomain *voltdm);
int omap_voltage_scale_vdd(struct voltagedomain *voltdm,
unsigned long target_volt);
void omap_voltage_reset(struct voltagedomain *voltdm);
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);
unsigned long omap_voltage_get_nom_volt(struct voltagedomain *voltdm);
struct dentry *omap_voltage_get_dbgdir(struct voltagedomain *voltdm);
#ifdef CONFIG_PM
int omap_voltage_register_pmic(struct voltagedomain *voltdm,
struct omap_volt_pmic_info *pmic_info);
void omap_change_voltscale_method(struct voltagedomain *voltdm,
int voltscale_method);
/* API to get the voltagedomain pointer */
struct voltagedomain *omap_voltage_domain_lookup(char *name);
int omap_voltage_late_init(void);
#else
static inline int omap_voltage_register_pmic(struct voltagedomain *voltdm,
struct omap_volt_pmic_info *pmic_info)
{
return -EINVAL;
}
static inline void omap_change_voltscale_method(struct voltagedomain *voltdm,
int voltscale_method) {}
static inline int omap_voltage_late_init(void)
{
return -EINVAL;
}
static inline struct voltagedomain *omap_voltage_domain_lookup(char *name)
{
return ERR_PTR(-EINVAL);
}
#endif
#endif
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