projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/drivers/video/amifb.c -- Amiga builtin chipset frame buffer device | |
| 3 | * | |
| 4 | * Copyright (C) 1995-2003 Geert Uytterhoeven | |
| 5 | * | |
| 6 | * with work by Roman Zippel | |
| 7 | * | |
| 8 | * | |
| 9 | * This file is based on the Atari frame buffer device (atafb.c): | |
| 10 | * | |
| 11 | * Copyright (C) 1994 Martin Schaller | |
| 12 | * Roman Hodek | |
| 13 | * | |
| 14 | * with work by Andreas Schwab | |
| 15 | * Guenther Kelleter | |
| 16 | * | |
| 17 | * and on the original Amiga console driver (amicon.c): | |
| 18 | * | |
| 19 | * Copyright (C) 1993 Hamish Macdonald | |
| 20 | * Greg Harp | |
| 21 | * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] | |
| 22 | * | |
| 23 | * with work by William Rucklidge (wjr@cs.cornell.edu) | |
| 24 | * Geert Uytterhoeven | |
| 25 | * Jes Sorensen (jds@kom.auc.dk) | |
| 26 | * | |
| 27 | * | |
| 28 | * History: | |
| 29 | * | |
| 30 | * - 24 Jul 96: Copper generates now vblank interrupt and | |
| 31 | * VESA Power Saving Protocol is fully implemented | |
| 32 | * - 14 Jul 96: Rework and hopefully last ECS bugs fixed | |
| 33 | * - 7 Mar 96: Hardware sprite support by Roman Zippel | |
| 34 | * - 18 Feb 96: OCS and ECS support by Roman Zippel | |
| 35 | * Hardware functions completely rewritten | |
| 36 | * - 2 Dec 95: AGA version by Geert Uytterhoeven | |
| 37 | * | |
| 38 | * This file is subject to the terms and conditions of the GNU General Public | |
| 39 | * License. See the file COPYING in the main directory of this archive | |
| 40 | * for more details. | |
| 41 | */ | |
| 42 | ||
| 43 | #include <linux/module.h> | |
| 44 | #include <linux/kernel.h> | |
| 45 | #include <linux/errno.h> | |
| 46 | #include <linux/string.h> | |
| 47 | #include <linux/mm.h> | |
| 1da177e4 LT |
48 | #include <linux/slab.h> |
| 49 | #include <linux/delay.h> | |
| 1da177e4 LT |
50 | #include <linux/interrupt.h> |
| 51 | #include <linux/fb.h> | |
| 52 | #include <linux/init.h> | |
| 53 | #include <linux/ioport.h> | |
| 54 | ||
| 55 | #include <asm/uaccess.h> | |
| 56 | #include <asm/system.h> | |
| 57 | #include <asm/irq.h> | |
| 58 | #include <asm/amigahw.h> | |
| 59 | #include <asm/amigaints.h> | |
| 60 | #include <asm/setup.h> | |
| 61 | ||
| 62 | #include "c2p.h" | |
| 63 | ||
| 64 | ||
| 65 | #define DEBUG | |
| 66 | ||
| 67 | #if !defined(CONFIG_FB_AMIGA_OCS) && !defined(CONFIG_FB_AMIGA_ECS) && !defined(CONFIG_FB_AMIGA_AGA) | |
| 68 | #define CONFIG_FB_AMIGA_OCS /* define at least one fb driver, this will change later */ | |
| 69 | #endif | |
| 70 | ||
| 71 | #if !defined(CONFIG_FB_AMIGA_OCS) | |
| 72 | # define IS_OCS (0) | |
| 73 | #elif defined(CONFIG_FB_AMIGA_ECS) || defined(CONFIG_FB_AMIGA_AGA) | |
| 74 | # define IS_OCS (chipset == TAG_OCS) | |
| 75 | #else | |
| 76 | # define CONFIG_FB_AMIGA_OCS_ONLY | |
| 77 | # define IS_OCS (1) | |
| 78 | #endif | |
| 79 | ||
| 80 | #if !defined(CONFIG_FB_AMIGA_ECS) | |
| 81 | # define IS_ECS (0) | |
| 82 | #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_AGA) | |
| 83 | # define IS_ECS (chipset == TAG_ECS) | |
| 84 | #else | |
| 85 | # define CONFIG_FB_AMIGA_ECS_ONLY | |
| 86 | # define IS_ECS (1) | |
| 87 | #endif | |
| 88 | ||
| 89 | #if !defined(CONFIG_FB_AMIGA_AGA) | |
| 90 | # define IS_AGA (0) | |
| 91 | #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_ECS) | |
| 92 | # define IS_AGA (chipset == TAG_AGA) | |
| 93 | #else | |
| 94 | # define CONFIG_FB_AMIGA_AGA_ONLY | |
| 95 | # define IS_AGA (1) | |
| 96 | #endif | |
| 97 | ||
| 98 | #ifdef DEBUG | |
| 99 | # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args) | |
| 100 | #else | |
| 101 | # define DPRINTK(fmt, args...) | |
| 102 | #endif | |
| 103 | ||
| 104 | /******************************************************************************* | |
| 105 | ||
| 106 | ||
| 107 | Generic video timings | |
| 108 | --------------------- | |
| 109 | ||
| 110 | Timings used by the frame buffer interface: | |
| 111 | ||
| 112 | +----------+---------------------------------------------+----------+-------+ | |
| 113 | | | ^ | | | | |
| 114 | | | |upper_margin | | | |