patch-2.4.7 linux/drivers/video/dcfb.c
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- Lines: 505
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.6/linux/drivers/video/dcfb.c
- Orig date:
Sun May 20 12:11:39 2001
diff -u --recursive --new-file v2.4.6/linux/drivers/video/dcfb.c linux/drivers/video/dcfb.c
@@ -1,504 +0,0 @@
-/*
- * $Id: dcfb.c,v 1.1 2001/04/01 15:02:51 yaegashi Exp $
- * SEGA Dreamcast framebuffer
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/malloc.h>
-#include <linux/delay.h>
-#include <linux/nubus.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-
-#include <linux/fb.h>
-
-#include <video/fbcon.h>
-#include <video/fbcon-cfb16.h>
-#include <video/fbcon-cfb32.h>
-
-#define BORDERRGB 0xa05f8040
-#define DISPLAYMODE 0xa05f8044
-#define ALPHAMODE 0xa05f8048
-#define DISPLAYALIGN 0xa05f804c
-#define BASEOFFSET1 0xa05f8050
-#define BASEOFFSET2 0xa05f8054
-#define DISPLAYSIZE 0xa05f805c
-#define SYNCMODE 0xa05f80d0
-#define VERTICALRANGE 0xa05f80dc
-#define HORIZPOSITION 0xa05f80ec
-#define VERTPOSITION 0xa05f80f0
-#define PALETTEMODE 0xa05f8108
-#define VIDEOOUTPUT 0xa0702c00
-
-static unsigned long dc_parm_vga_16bpp[] = {
- DISPLAYMODE, 0x00800005,
- BASEOFFSET1, 0,
- BASEOFFSET2, 640*2,
- DISPLAYSIZE, (1<<20)+((480-1)<<10)+(640*2/4-1),
- SYNCMODE, 0x100,
- VERTPOSITION, 0x00230023,
- VERTICALRANGE, 0x00280208,
- HORIZPOSITION, 0x00000090,
- VIDEOOUTPUT, 0,
- 0, 0,
-};
-
-static unsigned long dc_parm_vga_32bpp[] = {
- DISPLAYMODE, 0x0080000d,
- BASEOFFSET1, 0,
- BASEOFFSET2, 640*4,
- DISPLAYSIZE, (1<<20)+((480-1)<<10)+(640*4/4-1),
- SYNCMODE, 0x100,
- VERTPOSITION, 0x00230023,
- VERTICALRANGE, 0x00280208,
- HORIZPOSITION, 0x00000090,
- VIDEOOUTPUT, 0,
- 0, 0,
-};
-
-static unsigned long *dc_parm_vga[] = {
- dc_parm_vga_16bpp,
- dc_parm_vga_32bpp,
-};
-
-static unsigned long dc_parm_composite_16bpp[] = {
- DISPLAYMODE, 0x00000005,
- BASEOFFSET1, 0,
- BASEOFFSET2, 640*2,
- DISPLAYSIZE, ((640*2/4+1)<<20)+((240-1)<<10)+(640*2/4-1),
- SYNCMODE, 0x150,
- VERTPOSITION, 0x00120012,
- VERTICALRANGE, 0x00240204,
- HORIZPOSITION, 0x000000a4,
- VIDEOOUTPUT, 0x300,
- 0, 0,
-};
-
-static unsigned long dc_parm_composite_32bpp[] = {
- DISPLAYMODE, 0x0000000d,
- BASEOFFSET1, 0,
- BASEOFFSET2, 640*4,
- DISPLAYSIZE, ((640*4/4+1)<<20)+((240-1)<<10)+(640*4/4-1),
- SYNCMODE, 0x150,
- VERTPOSITION, 0x00120012,
- VERTICALRANGE, 0x00240204,
- HORIZPOSITION, 0x000000a4,
- VIDEOOUTPUT, 0x300,
- 0, 0,
-};
-
-static unsigned long *dc_parm_composite[] = {
- dc_parm_composite_16bpp,
- dc_parm_composite_32bpp,
-};
-
-static unsigned long dc_parm_interlace_16bpp[] = {
- DISPLAYMODE, 0x00000005,
- BASEOFFSET1, 0,
- BASEOFFSET2, 640*2,
- DISPLAYSIZE, ((640*2/4+1)<<20)+((240-1)<<10)+(640*2/4-1),
- SYNCMODE, 0x150,
- VERTPOSITION, 0x00120012,
- VERTICALRANGE, 0x00240204,
- HORIZPOSITION, 0x000000a4,
- VIDEOOUTPUT, 0,
- 0, 0,
-};
-
-static unsigned long dc_parm_interlace_32bpp[] = {
- DISPLAYMODE, 0x0000000d,
- BASEOFFSET1, 0,
- BASEOFFSET2, 640*4,
- DISPLAYSIZE, ((640*4/4+1)<<20)+((240-1)<<10)+(640*4/4-1),
- SYNCMODE, 0x150,
- VERTPOSITION, 0x00120012,
- VERTICALRANGE, 0x00240204,
- HORIZPOSITION, 0x000000a4,
- VIDEOOUTPUT, 0,
- 0, 0,
-};
-
-static unsigned long *dc_parm_interlace[] = {
- dc_parm_interlace_16bpp,
- dc_parm_interlace_32bpp,
-};
-
-struct dcfb_info {
- struct fb_info_gen gen;
-};
-
-struct dcfb_par
-{
- int x, y;
- int bpp;
-};
-
-static struct dcfb_info fb_info;
-static struct dcfb_par current_par;
-static int current_par_valid = 0;
-static struct display disp;
-
-static union {
-#ifdef FBCON_HAS_CFB16
- u16 cfb16[16];
-#endif
-#ifdef FBCON_HAS_CFB32
- u32 cfb32[16];
-#endif
-} fbcon_cmap;
-
-static unsigned long **dc_parms;
-static unsigned long dc_videobase, dc_videosize;
-static struct fb_var_screeninfo default_var;
-
-int dcfb_init(void);
-
-static void dcfb_set_par(struct dcfb_par *par, const struct fb_info *info);
-static void dcfb_encode_var(struct fb_var_screeninfo *var,
- struct dcfb_par *par,
- const struct fb_info *info);
-
-
-/*
- * Check cable type.
- * 0: VGA, 2: RGB, 3: Composite
- */
-
-#define PCTRA 0xff80002c
-#define PDTRA 0xff800030
-
-static int dcfb_cable_check(void)
-{
- unsigned long temp = ctrl_inl(PCTRA);
- temp &= 0xfff0ffff;
- temp |= 0x000a0000;
- ctrl_outl(temp, PCTRA);
- return (ctrl_inw(PDTRA)>>8)&3;
-}
-
-static void dcfb_detect(void)
-{
- struct dcfb_par par;
- int cable = dcfb_cable_check();
- unsigned long **parm_list[4] = {
- dc_parm_vga, dc_parm_vga, dc_parm_interlace, dc_parm_composite,
- };
- char *cable_name[] = { "VGA", "VGA", "Interlace", "Composite", };
-
- dc_videobase = 0xa5000000;
- dc_videosize = 0x00200000;
-
- par.x = 640;
- par.y = 480;
- par.bpp = 32;
- dc_parms = parm_list[cable];
- printk(KERN_INFO "Dreamcast video cable detected: %s.\n", cable_name[cable]);
-
- dcfb_set_par(&par, NULL);
- dcfb_encode_var(&default_var, &par, NULL);
-}
-
-static int dcfb_encode_fix(struct fb_fix_screeninfo *fix,
- struct dcfb_par *par,
- const struct fb_info *info)
-{
- memset(fix, 0, sizeof(struct fb_fix_screeninfo));
-
- strcpy(fix->id, "SEGA Dreamcast");
- fix->smem_start = dc_videobase;
- fix->smem_len = dc_videosize;
- fix->type = FB_TYPE_PACKED_PIXELS;
- fix->type_aux = 0;
- fix->visual = FB_VISUAL_TRUECOLOR;
- fix->xpanstep = 0;
- fix->ypanstep = 0;
- fix->ywrapstep = 0;
-
- switch(par->bpp) {
- default:
- case 16:
- fix->line_length = par->x*2;
- break;
- case 32:
- fix->line_length = par->x*4;
- break;
- }
-
- return 0;
-}
-
-
-static int dcfb_decode_var(struct fb_var_screeninfo *var,
- struct dcfb_par *par,
- const struct fb_info *info)
-{
- par->x = var->xres;
- par->y = var->yres;
- par->bpp = var->bits_per_pixel;
- return 0;
-}
-
-
-static void dcfb_encode_var(struct fb_var_screeninfo *var,
- struct dcfb_par *par,
- const struct fb_info *info)
-{
- memset(var, 0, sizeof(*var));
-
- var->xres = par->x;
- var->yres = par->y;
- var->xres_virtual = var->xres;
- var->yres_virtual = var->yres;
- var->xoffset = 0;
- var->yoffset = 0;
- var->bits_per_pixel = par->bpp;
- var->grayscale = 0;
- var->transp.offset = 0;
- var->transp.length = 0;
- var->transp.msb_right = 0;
- var->nonstd = 0;
- var->activate = 0;
- var->height = -1;
- var->width = -1;
- var->vmode = FB_VMODE_NONINTERLACED;
- var->pixclock = 0;
- var->sync = 0;
- var->left_margin = 0;
- var->right_margin = 0;
- var->upper_margin = 0;
- var->lower_margin = 0;
- var->hsync_len = 0;
- var->vsync_len = 0;
-
- switch (var->bits_per_pixel) {
-
- case 16: /* RGB 565 */
- var->red.offset = 11;
- var->red.length = 5;
- var->green.offset = 5;
- var->green.length = 6;
- var->blue.offset = 0;
- var->blue.length = 5;
- var->transp.offset = 0;
- var->transp.length = 0;
- break;
-
- case 32:
- var->red.offset = 16;
- var->red.length = 8;
- var->green.offset = 8;
- var->green.length = 8;
- var->blue.offset = 0;
- var->blue.length = 8;
- var->transp.offset = 0;
- var->transp.length = 0;
- break;
-
- }
-
- var->red.msb_right = 0;
- var->green.msb_right = 0;
- var->blue.msb_right = 0;
- var->transp.msb_right = 0;
-}
-
-
-static void dcfb_get_par(struct dcfb_par *par, const struct fb_info *info)
-{
- *par = current_par;
-}
-
-
-static void dcfb_set_par(struct dcfb_par *par, const struct fb_info *info)
-{
- unsigned long a, d, *p;
-
- current_par = *par;
- current_par_valid = 1;
-
- switch(par->bpp) {
- default:
- case 16:
- p = dc_parms[0];
- break;
- case 32:
- p = dc_parms[1];
- break;
- }
-
- ctrl_outl(0, 0xa05f8008); /* reset? */
- ctrl_outl(0, BORDERRGB);
-
- while(1) {
- a = *p++; d = *p++;
- if (!a) break;
- ctrl_outl(d, a);
- }
-
-}
-
-static struct {
- u_int red, green, blue;
-} palette[256];
-
-static int dcfb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
- u_int *transp, struct fb_info *info)
-{
- if (regno > 255)
- return 1;
-
- *red = palette[regno].red;
- *green = palette[regno].green;
- *blue = palette[regno].blue;
- *transp = 0;
-
- return 0;
-}
-
-
-static int dcfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp, struct fb_info *info)
-{
- if (regno > 255)
- return 1;
-
- palette[regno].red = red;
- palette[regno].green = green;
- palette[regno].blue = blue;
-
- if(regno<16) {
- switch(current_par.bpp) {
-#ifdef FBCON_HAS_CFB16
- case 16:
- fbcon_cmap.cfb16[regno] =
- ((red & 0xf800) ) |
- ((green & 0xfc00) >> 5) |
- ((blue & 0xf800) >> 11);
- break;
-#endif
-#ifdef FBCON_HAS_CFB32
- case 32:
- fbcon_cmap.cfb32[regno] =
- ((red & 0xff00) << 8) |
- ((green & 0xff00) ) |
- ((blue & 0xff00) >> 8);
- break;
-#endif
- }
- }
-
- return 0;
-}
-
-static int dcfb_blank(int blank_mode, const struct fb_info *info)
-{
- return 0;
-}
-
-
-static void dcfb_set_disp(const void *par, struct display *disp,
- struct fb_info_gen *info)
-{
- disp->screen_base = (void *)dc_videobase;
- disp->scrollmode = SCROLL_YREDRAW;
-
- switch(((struct dcfb_par *)par)->bpp) {
-#ifdef FBCON_HAS_CFB16
- case 16:
- disp->dispsw = &fbcon_cfb16;
- disp->dispsw_data = fbcon_cmap.cfb16;
- break;
-#endif
-#ifdef FBCON_HAS_CFB32
- case 32:
- disp->dispsw = &fbcon_cfb32;
- disp->dispsw_data = fbcon_cmap.cfb32;
- break;
-#endif
- default:
- disp->dispsw = &fbcon_dummy;
- }
-}
-
-
-struct fbgen_hwswitch dcfb_switch = {
- dcfb_detect,
- dcfb_encode_fix,
- dcfb_decode_var,
- dcfb_encode_var,
- dcfb_get_par,
- dcfb_set_par,
- dcfb_getcolreg,
- dcfb_setcolreg,
- NULL,
- dcfb_blank,
- dcfb_set_disp
-};
-
-static struct fb_ops dcfb_ops = {
- owner: THIS_MODULE,
- fb_get_fix: fbgen_get_fix,
- fb_get_var: fbgen_get_var,
- fb_set_var: fbgen_set_var,
- fb_get_cmap: fbgen_get_cmap,
- fb_set_cmap: fbgen_set_cmap,
-};
-
-
-int __init dcfb_init(void)
-{
- strcpy(fb_info.gen.info.modename, "SEGA Dreamcast");
- fb_info.gen.info.node = -1;
- fb_info.gen.info.flags = FBINFO_FLAG_DEFAULT;
- fb_info.gen.info.fbops = &dcfb_ops;
- fb_info.gen.info.disp = &disp;
- fb_info.gen.info.changevar = NULL;
- fb_info.gen.info.switch_con = &fbgen_switch;
- fb_info.gen.info.updatevar = &fbgen_update_var;
- fb_info.gen.info.blank = &fbgen_blank;
- fb_info.gen.parsize = sizeof(struct dcfb_par);
- fb_info.gen.fbhw = &dcfb_switch;
- fb_info.gen.fbhw->detect();
-
- fbgen_get_var(&disp.var, -1, &fb_info.gen.info);
- disp.var.activate = FB_ACTIVATE_NOW;
- fbgen_do_set_var(&disp.var, 1, &fb_info.gen);
- fbgen_set_disp(-1, &fb_info.gen);
- fbgen_install_cmap(0, &fb_info.gen);
-
- if(register_framebuffer(&fb_info.gen.info)<0) return -EINVAL;
-
- printk(KERN_INFO "fb%d: %s frame buffer device\n",
- GET_FB_IDX(fb_info.gen.info.node), fb_info.gen.info.modename);
-
- return 0;
-}
-
-
-void dcfb_cleanup(struct fb_info *info)
-{
- unregister_framebuffer(info);
-}
-
-
-#ifdef MODULE
-int init_module(void)
-{
- return dcfb_init();
-}
-
-void cleanup_module(void)
-{
- dcfb_cleanup(void);
-}
-#endif
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