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/*
* Copyright 2004-2011 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
*/
/*!
* @file arch-mxc/dvfs_dptc_struct.h
*
* @brief MXC dvfs & dptc structure definitions file.
*
* @ingroup PM_MX27 PM_MX31 PM_MXC91321 PM_MXC91311
*/
#ifndef __ASM_ARCH_MXC_DVFS_DPTC_STRUCT_H__
#define __ASM_ARCH_MXC_DVFS_DPTC_STRUCT_H__
#include <linux/semaphore.h>
#include <mach/pm_api.h>
/*!
* Number of entries in the DPTC log buffer
*/
#define LOG_ENTRIES 1024
/*!
* Log buffer Structure.\n
* This structure records the DPTC changes. \n
* This structure can be read by the user using the proc file system DPTC read entry.
*/
typedef struct {
/*!
* Index to the head of the log buffer
*/
int head;
/*!
* Index to the tail of the log buffer
*/
int tail;
/*!
* Mutex to allow access to the log buffer
*/
struct semaphore mutex;
/*!
* Array of log buffer entries
*/
dptc_log_entry_s entries[LOG_ENTRIES];
} dptc_log_s;
/*!
* DPTC driver data structure.\n
* Holds all driver parameters and data structures.
*/
typedef struct {
/*!
* This variable holds the current frequency index
*/
int current_freq_index;
/*!
* Boolean variable, if TRUE the DPTC module is enabled
* if FALSE the DPTC module is disabled
*/
int dptc_is_active;
/*!
* Boolean variable, if TRUE turbo mode enable
* if FALSE turbo mode disabled
*/
int turbo_mode_active;
/*!
* Boolean variable, if TRUE the DVFS module is enabled
* if FALSE the DPTC module is disabled
*/
int dvfs_is_active;
/*!
* Boolean variable, if TRUE the DPTC module is suspended
*/
int suspended;
unsigned char rc_state;
/*!
* Pointer to the DVFS & DPTC translation table
*/
dvfs_dptc_tables_s *dvfs_dptc_tables_ptr;
/*!
* The DPTC log buffer
*/
dptc_log_s dptc_log_buffer;
/*!
* The DVFS log buffer
*/
unsigned char *dvfs_log_buffer;
/*!
* The DVFS log buffer physical address (for SDMA)
*/
dma_addr_t dvfs_log_buffer_phys;
#ifdef CONFIG_MXC_DVFS_SDMA
/*!
* SDMA channel number
*/
int sdma_channel;
/*!
* This holds the previous working point
*/
int prev_wp;
/*!
* Wait entry for predictive DVFS
*/
wait_queue_head_t dvfs_pred_wait;
#endif
/*!
* This holds the current DVFS mode
*/
unsigned int dvfs_mode;
/*!
* Log buffer read pointer
*/
unsigned char *read_ptr;
/*
* Number of characters in log buffer
*/
int chars_in_buffer;
} dvfs_dptc_params_s;
/*!
* This struct contains the array with values of supported frequencies in Hz
*/
typedef struct {
/*
* Number of supported states
*/
unsigned int num_of_states;
/*!
* Array of frequencies
*/
unsigned int *freqs;
} dvfs_states_table;
/*
* if not defined define TREU and FALSE values.
*/
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif /* TRUE */
#endif
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