LXR linux-old/drivers/i2c/i2c-sibyte.c

   1/*
   2 * Copyright (C) 2001,2002,2003 Broadcom Corporation
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License
   6 * as published by the Free Software Foundation; either version 2
   7 * of the License, or (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 * 
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17 */
  18
  19#include <linux/config.h>
  20#include <linux/kernel.h>
  21#include <linux/module.h>
  22#include <linux/init.h>
  23#include <linux/errno.h>
  24
  25#include <asm/sibyte/sb1250_regs.h>
  26#include <asm/sibyte/sb1250_smbus.h>
  27
  28#include <linux/i2c.h>
  29#include <linux/i2c-algo-sibyte.h>
  30
  31static int sibyte_reg(struct i2c_client *client)
  32{
  33        return 0;
  34}
  35
  36static int sibyte_unreg(struct i2c_client *client)
  37{
  38        return 0;
  39}
  40
  41static void sibyte_inc_use(struct i2c_adapter *adap)
  42{
  43#ifdef MODULE
  44        MOD_INC_USE_COUNT;
  45#endif
  46}
  47
  48static void sibyte_dec_use(struct i2c_adapter *adap)
  49{
  50#ifdef MODULE
  51        MOD_DEC_USE_COUNT;
  52#endif
  53}
  54
  55static struct i2c_algo_sibyte_data sibyte_board_data[2] = {
  56        { NULL, 0, (void *)(KSEG1+A_SMB_BASE(0)) },
  57        { NULL, 1, (void *)(KSEG1+A_SMB_BASE(1)) }
  58};
  59
  60static struct i2c_adapter sibyte_board_adapter[2] = {
  61        {
  62                name:              "SiByte SMBus 0",
  63                id:                I2C_HW_SIBYTE,
  64                algo:              NULL,
  65                algo_data:         &sibyte_board_data[0],
  66                inc_use:           sibyte_inc_use,
  67                dec_use:           sibyte_dec_use,
  68                client_register:   sibyte_reg,
  69                client_unregister: sibyte_unreg,
  70                client_count:      0
  71        } , 
  72        {
  73                name:              "SiByte SMBus 1",
  74                id:                I2C_HW_SIBYTE,
  75                algo:              NULL,
  76                algo_data:         &sibyte_board_data[1],
  77                inc_use:           sibyte_inc_use,
  78                dec_use:           sibyte_dec_use,
  79                client_register:   sibyte_reg,
  80                client_unregister: sibyte_unreg,
  81                client_count:      0
  82        }
  83};
  84
  85int __init i2c_sibyte_init(void)
  86{
  87        printk("i2c-swarm.o: i2c SMBus adapter module for SiByte board\n");
  88        if (i2c_sibyte_add_bus(&sibyte_board_adapter[0], K_SMB_FREQ_100KHZ) < 0)
  89                return -ENODEV;
  90        if (i2c_sibyte_add_bus(&sibyte_board_adapter[1], K_SMB_FREQ_400KHZ) < 0)
  91                return -ENODEV;
  92        return 0;
  93}
  94
  95
  96EXPORT_NO_SYMBOLS;
  97
  98#ifdef MODULE
  99MODULE_AUTHOR("Kip Walker, Broadcom Corp.");
 100MODULE_DESCRIPTION("SMBus adapter routines for SiByte boards");
 101MODULE_LICENSE("GPL");
 102
 103int init_module(void)
 104{
 105        return i2c_sibyte_init();
 106}
 107
 108void cleanup_module(void)
 109{
 110        i2c_sibyte_del_bus(&sibyte_board_adapter[0]);
 111        i2c_sibyte_del_bus(&sibyte_board_adapter[1]);
 112}
 113
 114#endif
 115