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/*
* Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/*!
* @defgroup PM_MX27 Dynamic Process Temperature Compensation (DPTC) for i.MX27
*/
/*!
* @defgroup PM_MX31 Dynamic Process Temperature Compensation (DPTC) & Dynamic Voltage Frequency Scaling (DVFS) Drivers for i.MX31
*/
/*!
* @defgroup PM_MXC91321 Dynamic Process Temperature Compensation (DPTC) for MXC91321
*/
/*!
* @file arch-mxc/pm_api.h
*
* @brief MXC PM API header file.
*
* @ingroup PM_MX27 PM_MX31 PM_MXC91321
*/
#ifndef __ASM_ARCH_MXC_PM_API_H__
#define __ASM_ARCH_MXC_PM_API_H__
#include <linux/ioctl.h>
/*!
* PM IOCTL Magic Number
*/
#define PM_MAGIC 0xDC
/*!
* PM IOCTL update PM translation table command.\n
* This command changes the current DPTC table used by the driver. \n
* The command receives a string pointer to a new DPTC table, parses
* it and swiches the table.
*/
#define PM_IOCSTABLE _IOW(PM_MAGIC, 0, char*)
/*!
* PM IOCTL get DPTC table command.\n
* This command returns DPTC table used by the driver. \n
* The command receives a string pointer for DPTC table,
* and dumps the current working table.
*/
#define PM_IOCGTABLE _IOR(PM_MAGIC, 1, char*)
/*!
* DPTC IOCTL enable command.\n
* This command enables the dptc module.
*/
#define DPTC_IOCTENABLE _IO(PM_MAGIC, 2)
/*!
* DPTC IOCTL disable command.\n
* This command disables the dptc module.
*/
#define DPTC_IOCTDISABLE _IO(PM_MAGIC, 3)
/*!
* DPTC IOCTL enable reference circuit command.\n
* This command enables the dptc reference circuits.
*/
#define DPTC_IOCSENABLERC _IOW(PM_MAGIC, 4, unsigned char)
/*!
* DPTC IOCTL disable reference circuit command.\n
* This command disables the dptc reference circuits.
*/
#define DPTC_IOCSDISABLERC _IOW(PM_MAGIC, 5, unsigned char)
/*!
* DPTC IOCTL get current state command.\n
* This command returns the current dptc module state (Enabled/Disabled).
*/
#define DPTC_IOCGSTATE _IO(PM_MAGIC, 6)
/*!
* DPTC IOCTL set working point command.\n
* This command sets working point according to parameter.
*/
#define DPTC_IOCSWP _IOW(PM_MAGIC, 7, unsigned int)
/*!
* DVFS IOCTL enable command.\n
* This command enables the dvfs module.
*/
#define DVFS_IOCTENABLE _IO(PM_MAGIC, 8)
/*!
* DVFS IOCTL disable command.\n
* This command disables the dvfs module.
*/
#define DVFS_IOCTDISABLE _IO(PM_MAGIC, 9)
/*!
* DVFS IOCTL get current state command.\n
* This command returns the current dvfs module state (Enabled/Disabled).
*/
#define DVFS_IOCGSTATE _IO(PM_MAGIC, 10)
/*!
* DVFS IOCTL set SW general purpose bits
*/
#define DVFS_IOCSSWGP _IOW(PM_MAGIC, 11, unsigned char)
/*!
* DVFS IOCTL set wait-for-interrupt state
*/
#define DVFS_IOCSWFI _IOW(PM_MAGIC, 12, unsigned char)
/*!
* PM IOCTL get current frequency command.\n
* This command returns the current frequency in Hz
*/
#define PM_IOCGFREQ _IO(PM_MAGIC, 13)
/*!
* DVFS IOCTL set frequency command.\n
* This command sets frequency according to parameter. The parameter
* is the index of required frequency in current table.
*/
#define DVFS_IOCSFREQ _IOW(PM_MAGIC, 14, unsigned int)
/*!
* DVFS IOCTL set mode command.\n
* This command sets DVFS mode.
* 0 - HW mode, 1 - SW predictive mode
*/
#define DVFS_IOCSMODE _IOW(PM_MAGIC, 15, unsigned int)
#ifdef CONFIG_ARCH_MXC91321
/*!
* This defines refercence circuits default status
*/
#define DPTC_REF_CIRCUITS_STATUS 0xE
/*!
* DCVR register structure
*/
typedef struct {
/*!
* Emergency limit threshold
*/
unsigned long EmergencyLimit:10;
/*!
* Lower limit threshold
*/
unsigned long LowerLimit:11;
/*!
* Upper limit threshold
*/
unsigned long UpperLimit:11;
} dcvr_reg_s;
#else
/*!
* This defines refercence circuits default status
*/
#define DPTC_REF_CIRCUITS_STATUS 0xA
/*!
* DCVR register structure
*/
typedef struct {
/*!
* Reserved bits
*/
unsigned long Reserved:2;
/*!
* Emergency limit threshold
*/
unsigned long EmergencyLimit:10;
/*!
* Lower limit threshold
*/
unsigned long LowerLimit:10;
/*!
* Upper limit threshold
*/
unsigned long UpperLimit:10;
} dcvr_reg_s;
#endif
/*!
* DCVR register represented as a union between a 32 bit word and a bit field
*/
typedef union {
/*!
* DCVR register as a 32 bit word
*/
unsigned int AsInt;
/*!
* DCVR register as a bit field
*/
dcvr_reg_s AsStruct;
} dcvr_reg_u;
/*!
* This struct represents DCVR registers state
*/
typedef struct {
/*!
* dcvr registers values
*/
dcvr_reg_u dcvr_reg[4];
} dcvr_state;
/*!
* This struct defines DPTC working point
*/
typedef struct {
/*!
* Working point index
*/
int wp_index;
/*!
* PMIC regulators values
*/
unsigned long pmic_values[4];
} dptc_wp;
/*!
* This struct defines DVFS state
*/
typedef struct {
/*!
* Flag for pll change when frequency should be decreased
*/
unsigned long pll_sw_down;
/*!
* pdr0 register decrease value
*/
unsigned long pdr0_down;
/*!
* pll register deccrease value
*/
unsigned long pll_down;
/*!
* Flag for pll change when frequency should be increased
*/
unsigned long pll_sw_up;
/*!
* pdr0 register increase value
*/
unsigned long pdr0_up;
/*!
* pll register increase value
*/
unsigned long pll_up;
/*!
* vscnt increase value
*/
unsigned long vscnt;
} dvfs_state;
/*!
* This structure holds the dptc translation table.\n
* This structure is used to translate a working point and frequency index to
* voltage value and DPTC thresholds.\n
* This structure is also used in the driver read and write operations.\n
* During read operation this structure is received from the dptc driver,
* and during write operation this structure should be sent to the driver.
*/
typedef struct {
/*!
* Number of working points in dptc table
*/
int wp_num;
/*!
* This variable holds the current working point
*/
int curr_wp;
/*!
* DVFS translation table entries
*/
dvfs_state *table;
/*!
* DCVR table
*/
dcvr_state **dcvr;
/*!
* DPTC translation table entries
*/
dptc_wp *wp;
/*
* Boolean flag. If it is 0 - uses 4 levels of frequency, 1 - uses 2 levels of frequency
*/
int use_four_freq;
/*!
* Number of frequencies for each working point
*/
int dvfs_state_num;
} dvfs_dptc_tables_s;
/*!
* DPTC log buffer entry structure
*/
typedef struct {
/*!
* Log entry time in jiffies
*/
unsigned long jiffies;
/*!
* Log entry working point value
*/
int wp;
/*!
* Log entry voltage index
*/
int voltage;
/*!
* Log entry frequency index
*/
int freq;
} dptc_log_entry_s;
/*!
* This defines DVFS HW mode
*/
#define DVFS_HW_MODE 0
/*!
* This defines DVFS predictive mode
*/
#define DVFS_PRED_MODE 1
#endif
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