linux-imx

// SPDX-License-Identifier: GPL-2.0+

/*

 * IBM Hot Plug Controller Driver

 *

 * Written By: Jyoti Shah, IBM Corporation

 *

 * Copyright (C) 2001-2003 IBM Corp.

 *

 * All rights reserved.

 *

 * Send feedback to <gregkh@us.ibm.com>

 *                  <jshah@us.ibm.com>

 *

 */

​

#include <linux/wait.h>

#include <linux/time.h>

#include <linux/completion.h>

#include <linux/delay.h>

#include <linux/module.h>

#include <linux/pci.h>

#include <linux/init.h>

#include <linux/mutex.h>

#include <linux/sched.h>

#include <linux/kthread.h>

#include "ibmphp.h"

​

static int to_debug = 0;

#define debug_polling(fmt, arg...)  do { if (to_debug) debug(fmt, arg); } while (0)

​

//----------------------------------------------------------------------------

// timeout values

//----------------------------------------------------------------------------

#define CMD_COMPLETE_TOUT_SEC   60  // give HPC 60 sec to finish cmd

#define HPC_CTLR_WORKING_TOUT   60  // give HPC 60 sec to finish cmd

#define HPC_GETACCESS_TIMEOUT   60  // seconds

#define POLL_INTERVAL_SEC   2   // poll HPC every 2 seconds

#define POLL_LATCH_CNT      5   // poll latch 5 times, then poll slots

​

//----------------------------------------------------------------------------

// Winnipeg Architected Register Offsets

//----------------------------------------------------------------------------

#define WPG_I2CMBUFL_OFFSET 0x08    // I2C Message Buffer Low

#define WPG_I2CMOSUP_OFFSET 0x10    // I2C Master Operation Setup Reg

#define WPG_I2CMCNTL_OFFSET 0x20    // I2C Master Control Register

#define WPG_I2CPARM_OFFSET  0x40    // I2C Parameter Register

#define WPG_I2CSTAT_OFFSET  0x70    // I2C Status Register

​

//----------------------------------------------------------------------------

// Winnipeg Store Type commands (Add this commands to the register offset)

//----------------------------------------------------------------------------

#define WPG_I2C_AND     0x1000  // I2C AND operation

#define WPG_I2C_OR      0x2000  // I2C OR operation

​

//----------------------------------------------------------------------------

// Command set for I2C Master Operation Setup Register

//----------------------------------------------------------------------------

#define WPG_READATADDR_MASK 0x00010000  // read,bytes,I2C shifted,index

#define WPG_WRITEATADDR_MASK    0x40010000  // write,bytes,I2C shifted,index

#define WPG_READDIRECT_MASK 0x10010000

#define WPG_WRITEDIRECT_MASK    0x60010000

​

​