Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | /* $id: p9100fb.c,v 1.4 1999/08/18 10:55:01 shadow Exp $ * p9100fb.c: P9100 frame buffer driver * * Copyright 1999 Derrick J Brashear (shadow@dementia.org) */ #include <linux/module.h> #include <linux/sched.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/selection.h> #include <video/sbusfb.h> #include <asm/io.h> #include <video/fbcon-cfb8.h> #include "p9100.h" static struct sbus_mmap_map p9100_mmap_map[] = { #if 0 /* For now, play we're a dumb color fb */ { P9100_CTL_OFF, 0x38000000, 0x2000 }, { P9100_CMD_OFF, 0x38002000, 0x2000 }, { P9100_FB_OFF, 0x38800000, 0x200000 }, { CG3_MMAP_OFFSET, 0x38800000, SBUS_MMAP_FBSIZE(1) }, #else { CG3_MMAP_OFFSET, 0x0, SBUS_MMAP_FBSIZE(1) }, #endif { 0, 0, 0 } }; #define _READCTL(member, out) \ { \ struct p9100_ctrl *actual; \ actual = (struct p9100_ctrl *)fb->s.p9100.ctrl; \ out = sbus_readl(&actual-> ## member ); \ } #define READCTL(member, out) \ { \ struct p9100_ctrl *enab, *actual; \ actual = (struct p9100_ctrl *)fb->s.p9100.ctrl; \ enab = (struct p9100_ctrl *)fb->s.p9100.fbmem; \ out = sbus_readl(&enab-> ## member ); \ out = sbus_readl(&actual-> ## member ); \ } #define WRITECTL(member, val) \ { \ u32 __writetmp; \ struct p9100_ctrl *enab, *actual; \ actual = (struct p9100_ctrl *)fb->s.p9100.ctrl; \ enab = (struct p9100_ctrl *)fb->s.p9100.fbmem; \ __writetmp = sbus_readl(&enab-> ## member ); \ sbus_writel(val, &actual-> ## member ); \ } static void p9100_loadcmap (struct fb_info_sbusfb *fb, struct display *p, int index, int count) { unsigned long flags; u32 tmp; int i; spin_lock_irqsave(&fb->lock, flags); _READCTL(pwrup_cfg, tmp); WRITECTL(ramdac_cmap_wridx, (index << 16)); for (i = index; count--; i++){ _READCTL(pwrup_cfg, tmp); WRITECTL(ramdac_palette_data, (fb->color_map CM(i,0) << 16)); _READCTL(pwrup_cfg, tmp); WRITECTL(ramdac_palette_data, (fb->color_map CM(i,1) << 16)); _READCTL(pwrup_cfg, tmp); WRITECTL(ramdac_palette_data, (fb->color_map CM(i,2) << 16)); } spin_unlock_irqrestore(&fb->lock, flags); } static void p9100_blank (struct fb_info_sbusfb *fb) { unsigned long flags; u32 val; spin_lock_irqsave(&fb->lock, flags); READCTL(vid_screenpaint_timectl1, val); val &= ~ SCREENPAINT_TIMECTL1_ENABLE_VIDEO; WRITECTL(vid_screenpaint_timectl1, val); spin_unlock_irqrestore(&fb->lock, flags); } static void p9100_unblank (struct fb_info_sbusfb *fb) { unsigned long flags; u32 val; spin_lock_irqsave(&fb->lock, flags); READCTL(vid_screenpaint_timectl1, val); val |= SCREENPAINT_TIMECTL1_ENABLE_VIDEO; WRITECTL(vid_screenpaint_timectl1, val); spin_unlock_irqrestore(&fb->lock, flags); } static void p9100_margins (struct fb_info_sbusfb *fb, struct display *p, int x_margin, int y_margin) { p->screen_base += (y_margin - fb->y_margin) * p->line_length + (x_margin - fb->x_margin); } static char idstring[60] __initdata = { 0 }; char * __init p9100fb_init(struct fb_info_sbusfb *fb) { struct fb_fix_screeninfo *fix = &fb->fix; struct display *disp = &fb->disp; struct fbtype *type = &fb->type; struct sbus_dev *sdev = fb->sbdp; unsigned long phys = sdev->reg_addrs[2].phys_addr; int tmp; #ifndef FBCON_HAS_CFB8 return NULL; #endif /* Control regs: fb->sbdp->reg_addrs[0].phys_addr * Command regs: fb->sbdp->reg_addrs[1].phys_addr * Frame buffer: fb->sbdp->reg_addrs[2].phys_addr */ if (!fb->s.p9100.ctrl) { fb->s.p9100.ctrl = (struct p9100_ctrl *) sbus_ioremap(&sdev->resource[0], 0, sdev->reg_addrs[0].reg_size, "p9100 ctrl"); } strcpy(fb->info.modename, "p9100"); strcpy(fix->id, "p9100"); fix->accel = FB_ACCEL_SUN_CGTHREE; fix->line_length = fb->var.xres_virtual; disp->scrollmode = SCROLL_YREDRAW; if (!disp->screen_base) disp->screen_base = (char *) sbus_ioremap(&sdev->resource[2], 0, type->fb_size, "p9100 ram"); fb->s.p9100.fbmem = (volatile u32 *)disp->screen_base; disp->screen_base += fix->line_length * fb->y_margin + fb->x_margin; READCTL(sys_config, tmp); switch ((tmp >> SYS_CONFIG_PIXELSIZE_SHIFT) & 7) { case 7: type->fb_depth = 24; break; case 5: type->fb_depth = 32; break; case 3: type->fb_depth = 16; break; case 2: type->fb_depth = 8; break; default: printk("p9100: screen depth unknown: 0x%x", tmp); return NULL; } fb->dispsw = fbcon_cfb8; fb->margins = p9100_margins; fb->loadcmap = p9100_loadcmap; fb->blank = p9100_blank; fb->unblank = p9100_unblank; fb->physbase = phys; fb->mmap_map = p9100_mmap_map; sprintf(idstring, "%s at 0x%x", "p9100", (unsigned int)disp->screen_base); return idstring; } |