/*
* drivers/video/imsttfb.c -- frame buffer device for IMS TwinTurbo
*
* This file is derived from the powermac console "imstt" driver:
* Copyright (C) 1997 Sigurdur Asgeirsson
* With additional hacking by Jeffrey Kuskin (jsk@mojave.stanford.edu)
* Modified by Danilo Beuche 1998
* Some register values added by Damien Doligez, INRIA Rocquencourt
* Various cleanups by Paul Mundt (lethal@chaoticdreams.org)
*
* This file was written by Ryan Nielsen (ran@krazynet.com)
* Most of the frame buffer device stuff was copied from atyfb.c
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#if defined(CONFIG_PPC)
#include <linux/nvram.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include "macmodes.h"
#endif
#ifndef __powerpc__
#define eieio() /* Enforce In-order Execution of I/O */
#endif
/* TwinTurbo (Cosmo) registers */
enum {
S1SA = 0, /* 0x00 */
S2SA = 1, /* 0x04 */
SP = 2, /* 0x08 */
DSA = 3, /* 0x0C */
CNT = 4, /* 0x10 */
DP_OCTL = 5, /* 0x14 */
CLR = 6, /* 0x18 */
BI = 8, /* 0x20 */
MBC = 9, /* 0x24 */
BLTCTL = 10, /* 0x28 */
/* Scan Timing Generator Registers */
HES = 12, /* 0x30 */
HEB
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