/* * linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device * * Copyright (C) 2001 Romain Dolbeau <[email protected]>. * * Ported to 2.6 kernel on 1 May 2007 by Krzysztof Helt <[email protected]> * based on pm2fb.c * * Based on code written by: * Sven Luther, <[email protected]> * Alan Hourihane, <[email protected]> * Russell King, <[email protected]> * Based on linux/drivers/video/skeletonfb.c: * Copyright (C) 1997 Geert Uytterhoeven * Based on linux/driver/video/pm2fb.c: * Copyright (C) 1998-1999 Ilario Nardinocchi ([email protected]) * Copyright (C) 1999 Jakub Jelinek ([email protected]) * * 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/aperture.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/init.h> #include <linux/pci.h> #include <video/pm3fb.h> #if !defined(CONFIG_PCI) #error "Only generic PCI cards supported." #endif #undef PM3FB_MASTER_DEBUG #ifdef PM3FB_MASTER_DEBUG #define DPRINTK … #else #define DPRINTK(a, b...) … #endif #define PM3_PIXMAP_SIZE … /* * Driver data */ static int hwcursor = …; static char *mode_option; static bool noaccel; static bool nomtrr; /* * This structure defines the hardware state of the graphics card. Normally * you place this in a header file in linux/include/video. This file usually * also includes register information. That allows other driver subsystems * and userland applications the ability to use the same header file to * avoid duplicate work and easy porting of software. */ struct pm3_par { … }; /* * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo * if we don't use modedb. If we do use modedb see pm3fb_init how to use it * to get a fb_var_screeninfo. Otherwise define a default var as well. */ static struct fb_fix_screeninfo pm3fb_fix = …; /* * Utility functions */ static inline u32 PM3_READ_REG(struct pm3_par *par, s32 off) { … } static inline void PM3_WRITE_REG(struct pm3_par *par, s32 off, u32 v) { … } static inline void PM3_WAIT(struct pm3_par *par, u32 n) { … } static inline void PM3_WRITE_DAC_REG(struct pm3_par *par, unsigned r, u8 v) { … } static inline void pm3fb_set_color(struct pm3_par *par, unsigned char regno, unsigned char r, unsigned char g, unsigned char b) { … } static void pm3fb_clear_colormap(struct pm3_par *par, unsigned char r, unsigned char g, unsigned char b) { … } /* Calculating various clock parameters */ static void pm3fb_calculate_clock(unsigned long reqclock, unsigned char *prescale, unsigned char *feedback, unsigned char *postscale) { … } static inline int pm3fb_depth(const struct fb_var_screeninfo *var) { … } static inline int pm3fb_shift_bpp(unsigned bpp, int v) { … } /* acceleration */ static int pm3fb_sync(struct fb_info *info) { … } static void pm3fb_init_engine(struct fb_info *info) { … } static void pm3fb_fillrect(struct fb_info *info, const struct fb_fillrect *region) { … } static void pm3fb_copyarea(struct fb_info *info, const struct fb_copyarea *area) { … } static void pm3fb_imageblit(struct fb_info *info, const struct fb_image *image) { … } /* end of acceleration functions */ /* * Hardware Cursor support. */ static const u8 cursor_bits_lookup[16] = …; static int pm3fb_cursor(struct fb_info *info, struct fb_cursor *cursor) { … } /* write the mode to registers */ static void pm3fb_write_mode(struct fb_info *info) { … } /* * hardware independent functions */ static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { … } static int pm3fb_set_par(struct fb_info *info) { … } static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { … } static int pm3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { … } static int pm3fb_blank(int blank_mode, struct fb_info *info) { … } /* * Frame buffer operations */ static const struct fb_ops pm3fb_ops = …; /* ------------------------------------------------------------------------- */ /* * Initialization */ /* mmio register are already mapped when this function is called */ /* the pm3fb_fix.smem_start is also set */ static unsigned long pm3fb_size_memory(struct pm3_par *par) { … } static int pm3fb_probe(struct pci_dev *dev, const struct pci_device_id *ent) { … } /* * Cleanup */ static void pm3fb_remove(struct pci_dev *dev) { … } static const struct pci_device_id pm3fb_id_table[] = …; /* For PCI drivers */ static struct pci_driver pm3fb_driver = …; MODULE_DEVICE_TABLE(pci, pm3fb_id_table); #ifndef MODULE /* * Setup */ /* * Only necessary if your driver takes special options, * otherwise we fall back on the generic fb_setup(). */ static int __init pm3fb_setup(char *options) { … } #endif /* MODULE */ static int __init pm3fb_init(void) { … } #ifdef MODULE static void __exit pm3fb_exit(void) { pci_unregister_driver(&pm3fb_driver); } module_exit(pm3fb_exit); #endif module_init(…) …; module_param(mode_option, charp, 0); MODULE_PARM_DESC(…) …; module_param(noaccel, bool, 0); MODULE_PARM_DESC(…) …; module_param(hwcursor, int, 0644); MODULE_PARM_DESC(…) …; module_param(nomtrr, bool, 0); MODULE_PARM_DESC(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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