101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2007 STMicroelectronics Limited
|
||
|
|
* Author: Stuart Menefy <stuart.menefy@st.com>
|
||
|
|
*
|
||
|
|
* May be copied or modified under the terms of the GNU General Public
|
||
|
|
* License. See linux/COPYING for more information.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __LINUX_STM_SYSCONF_H
|
||
|
|
#define __LINUX_STM_SYSCONF_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
|
||
|
|
struct sysconf_field;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_claim - Claim ownership of a field of a sysconfig register
|
||
|
|
* @group: register group (ie. SYS_CFG, SYS_STA); SOC-specific
|
||
|
|
* @num: register number
|
||
|
|
* @lsb: the LSB of the register we are claiming
|
||
|
|
* @msb: the MSB of the register we are claiming
|
||
|
|
* @devname: device claiming the field
|
||
|
|
*
|
||
|
|
* This function claims ownership of a field from a sysconfig register.
|
||
|
|
* The part of the sysconfig register being claimed is from bit @lsb
|
||
|
|
* through to bit @msb inclusive. To claim the whole register, @lsb
|
||
|
|
* should be 0, @msb 31 (or 63 for systems with 64 bit sysconfig registers).
|
||
|
|
*
|
||
|
|
* It returns a &struct sysconf_field which can be used in subsequent
|
||
|
|
* operations on this field.
|
||
|
|
*/
|
||
|
|
struct sysconf_field *sysconf_claim(int group, int num, int lsb, int msb,
|
||
|
|
const char *devname);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_release - Release ownership of a field of a sysconfig register
|
||
|
|
* @field: the sysconfig field to write to
|
||
|
|
*
|
||
|
|
* Release ownership of a field from a sysconf register.
|
||
|
|
* @field must have been claimed using sysconf_claim().
|
||
|
|
*/
|
||
|
|
void sysconf_release(struct sysconf_field *field);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_write - Write a value into a field of a sysconfig register
|
||
|
|
* @field: the sysconfig field to write to
|
||
|
|
* @value: the value to write into the field
|
||
|
|
*
|
||
|
|
* This writes @value into the field of the sysconfig register @field.
|
||
|
|
* @field must have been claimed using sysconf_claim().
|
||
|
|
*/
|
||
|
|
void sysconf_write(struct sysconf_field *field, unsigned long value);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_read - Read a field of a sysconfig register
|
||
|
|
* @field: the sysconfig field to read
|
||
|
|
*
|
||
|
|
* This reads a field of the sysconfig register @field.
|
||
|
|
* @field must have been claimed using sysconf_claim().
|
||
|
|
*/
|
||
|
|
unsigned long sysconf_read(struct sysconf_field *field);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_address - Return the address memory of sysconfig register
|
||
|
|
* @field: the sysconfig field to return
|
||
|
|
*
|
||
|
|
* This returns the address memory of sysconfig register
|
||
|
|
* @field must have been claimed using sysconf_claim().
|
||
|
|
*/
|
||
|
|
void *sysconf_address(struct sysconf_field *field);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_mask - Return the bitmask of sysconfig register
|
||
|
|
* @field: the sysconfig field to return
|
||
|
|
*
|
||
|
|
* This returns the bitmask of sysconfig register
|
||
|
|
* @field must have been claimed using sysconf_claim().
|
||
|
|
*/
|
||
|
|
unsigned long sysconf_mask(struct sysconf_field *field);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_early_init - Used by board initialization code
|
||
|
|
*/
|
||
|
|
void sysconf_early_init(struct platform_device *pdevs, int pdevs_num);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_group_name - Return registers group name
|
||
|
|
* @group: register group (ie. SYS_CFG, SYS_STA); SOC-specific
|
||
|
|
*/
|
||
|
|
const char *sysconf_group_name(int group);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sysconf_reg_name - Return register name
|
||
|
|
* @group: register group (ie. SYS_CFG, SYS_STA); SOC-specific
|
||
|
|
* @num: register number
|
||
|
|
*/
|
||
|
|
const char *sysconf_reg_name(int group, int num);
|
||
|
|
|
||
|
|
#endif
|