/* $Id: tcxfb.c,v 1.1 1998/07/21 14:50:44 jj Exp $ * tcxfb.c: TCX 24/8bit frame buffer driver * * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz) * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx) * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sbusfb.h" #include #include "fbcon-cfb8.h" /* THC definitions */ #define TCX_THC_MISC_REV_SHIFT 16 #define TCX_THC_MISC_REV_MASK 15 #define TCX_THC_MISC_VSYNC_DIS (1 << 25) #define TCX_THC_MISC_HSYNC_DIS (1 << 24) #define TCX_THC_MISC_RESET (1 << 12) #define TCX_THC_MISC_VIDEO (1 << 10) #define TCX_THC_MISC_SYNC (1 << 9) #define TCX_THC_MISC_VSYNC (1 << 8) #define TCX_THC_MISC_SYNC_ENAB (1 << 7) #define TCX_THC_MISC_CURS_RES (1 << 6) #define TCX_THC_MISC_INT_ENAB (1 << 5) #define TCX_THC_MISC_INT (1 << 4) #define TCX_THC_MISC_INIT 0x9f #define TCX_THC_REV_REV_SHIFT 20 #define TCX_THC_REV_REV_MASK 15 #define TCX_THC_REV_MINREV_SHIFT 28 #define TCX_THC_REV_MINREV_MASK 15 /* The contents are unknown */ struct tcx_tec { volatile u32 tec_matrix; volatile u32 tec_clip; volatile u32 tec_vdc; }; struct tcx_thc { volatile u32 thc_rev; u32 thc_pad0[511]; volatile u32 thc_hs; /* hsync timing */ volatile u32 thc_hsdvs; volatile u32 thc_hd; volatile u32 thc_vs; /* vsync timing */ volatile u32 thc_vd; volatile u32 thc_refresh; volatile u32 thc_misc; u32 thc_pad1[56]; volatile u32 thc_cursxy; /* cursor x,y position (16 bits each) */ volatile u32 thc_cursmask[32]; /* cursor mask bits */ volatile u32 thc_cursbits[32]; /* what to show where mask enabled */ }; static struct sbus_mmap_map tcx_mmap_map[] = { { TCX_RAM8BIT, 0, SBUS_MMAP_FBSIZE(1) }, { TCX_RAM24BIT, 0, SBUS_MMAP_FBSIZE(4) }, { TCX_UNK3, 0, SBUS_MMAP_FBSIZE(8) }, { TCX_UNK4, 0, SBUS_MMAP_FBSIZE(8) }, { TCX_CONTROLPLANE, 0, SBUS_MMAP_FBSIZE(4) }, { TCX_UNK6, 0, SBUS_MMAP_FBSIZE(8) }, { TCX_UNK7, 0, SBUS_MMAP_FBSIZE(8) }, { TCX_TEC, 0, PAGE_SIZE }, { TCX_BTREGS, 0, PAGE_SIZE }, { TCX_THC, 0, PAGE_SIZE }, { TCX_DHC, 0, PAGE_SIZE }, { TCX_ALT, 0, PAGE_SIZE }, { TCX_UNK2, 0, 0x20000 }, { 0, 0, 0 } }; static void tcx_set_control_plane (struct fb_info_sbusfb *fb) { u32 *p, *pend; p = fb->s.tcx.cplane; if (!p) return; for (pend = p + fb->type.fb_size; p < pend; p++) *p &= 0xffffff; } static void tcx_switch_from_graph (struct fb_info_sbusfb *fb) { /* Reset control plane to 8bit mode if necessary */ if (fb->open && fb->mmaped) tcx_set_control_plane (fb); } static void tcx_loadcmap (struct fb_info_sbusfb *fb, int index, int count) { struct bt_regs *bt = fb->s.tcx.bt; int i; bt->addr = index << 24; for (i = index; count--; i++){ bt->color_map = fb->color_map CM(i,0) << 24; bt->color_map = fb->color_map CM(i,1) << 24; bt->color_map = fb->color_map CM(i,2) << 24; } } static void tcx_restore_palette (struct fb_info_sbusfb *fb) { struct bt_regs *bt = fb->s.tcx.bt; bt->addr = 0; bt->color_map = 0xffffffff; bt->color_map = 0xffffffff; bt->color_map = 0xffffffff; } static void tcx_setcursormap (struct fb_info_sbusfb *fb, u8 *red, u8 *green, u8 *blue) { struct bt_regs *bt = fb->s.tcx.bt; /* Note the 2 << 24 is different from cg6's 1 << 24 */ bt->addr = 2 << 24; bt->cursor = red[0] << 24; bt->cursor = green[0] << 24; bt->cursor = blue[0] << 24; bt->addr = 3 << 24; bt->cursor = red[1] << 24; bt->cursor = green[1] << 24; bt->cursor = blue[1] << 24; bt->addr = 0; } /* Set cursor shape */ static void tcx_setcurshape (struct fb_info_sbusfb *fb) { struct tcx_thc *thc = fb->s.tcx.thc; int i; for (i = 0; i < 32; i++){ thc->thc_cursmask [i] = fb->cursor.bits[0][i]; thc->thc_cursbits [i] = fb->cursor.bits[1][i]; } } /* Load cursor information */ static void tcx_setcursor (struct fb_info_sbusfb *fb) { unsigned int v; struct cg_cursor *c = &fb->cursor; if (c->enable) v = ((c->cpos.fbx - c->chot.fbx) << 16) |((c->cpos.fby - c->chot.fby) & 0xffff); else /* Magic constant to turn off the cursor */ v = ((65536-32) << 16) | (65536-32); fb->s.tcx.thc->thc_cursxy = v; } static void tcx_blank (struct fb_info_sbusfb *fb) { fb->s.tcx.thc->thc_misc &= ~TCX_THC_MISC_VIDEO; /* This should put us in power-save */ fb->s.tcx.thc->thc_misc |= TCX_THC_MISC_VSYNC_DIS; fb->s.tcx.thc->thc_misc |= TCX_THC_MISC_HSYNC_DIS; } static void tcx_unblank (struct fb_info_sbusfb *fb) { fb->s.tcx.thc->thc_misc &= ~TCX_THC_MISC_VSYNC_DIS; fb->s.tcx.thc->thc_misc &= ~TCX_THC_MISC_HSYNC_DIS; fb->s.tcx.thc->thc_misc |= TCX_THC_MISC_VIDEO; } static void tcx_reset (struct fb_info_sbusfb *fb) { if (fb->open && fb->mmaped) tcx_set_control_plane(fb); /* Turn off stuff in the Transform Engine. */ fb->s.tcx.tec->tec_matrix = 0; fb->s.tcx.tec->tec_clip = 0; fb->s.tcx.tec->tec_vdc = 0; /* Enable cursor in Brooktree DAC. */ fb->s.tcx.bt->addr = 0x06 << 24; fb->s.tcx.bt->control |= 0x03 << 24; } static void tcx_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 }; __initfunc(char *tcxfb_init(struct fb_info_sbusfb *fb)) { struct fb_fix_screeninfo *fix = &fb->fix; struct display *disp = &fb->disp; struct fbtype *type = &fb->type; unsigned long phys = fb->sbdp->reg_addrs[0].phys_addr; int lowdepth; #ifndef FBCON_HAS_CFB8 return NULL; #endif lowdepth = prom_getbool (fb->prom_node, "tcx-8-bit"); if (lowdepth) { strcpy(fb->info.modename, "TCX8"); strcpy(fix->id, "TCX8"); } else { strcpy(fb->info.modename, "TCX24"); strcpy(fix->id, "TCX24"); } fix->line_length = fb->var.xres_virtual; disp->scrollmode = SCROLL_YREDRAW; if (!disp->screen_base) disp->screen_base = (char *)sparc_alloc_io(phys, 0, type->fb_size, "tcx_ram", fb->iospace, 0); disp->screen_base += fix->line_length * fb->y_margin + fb->x_margin; fb->s.tcx.tec = (struct tcx_tec *)sparc_alloc_io(fb->sbdp->reg_addrs[7].phys_addr, 0, sizeof(struct tcx_tec), "tcx_tec", fb->iospace, 0); fb->s.tcx.thc = (struct tcx_thc *)sparc_alloc_io(fb->sbdp->reg_addrs[9].phys_addr, 0, sizeof(struct tcx_thc), "tcx_thc", fb->iospace, 0); fb->s.tcx.bt = (struct bt_regs *)sparc_alloc_io(fb->sbdp->reg_addrs[8].phys_addr, 0, sizeof(struct bt_regs), "tcx_dac", fb->iospace, 0); if (!lowdepth) { fb->s.tcx.cplane = (u32 *)sparc_alloc_io(fb->sbdp->reg_addrs[4].phys_addr, 0, type->fb_size*4, "tcx_cplane", fb->iospace, 0); type->fb_depth = 24; fb->switch_from_graph = tcx_switch_from_graph; } else { /* As there can be one tcx in a machine only, we can write directly into tcx_mmap_map */ tcx_mmap_map[1].size = SBUS_MMAP_EMPTY; tcx_mmap_map[4].size = SBUS_MMAP_EMPTY; tcx_mmap_map[5].size = SBUS_MMAP_EMPTY; tcx_mmap_map[6].size = SBUS_MMAP_EMPTY; } fb->dispsw = fbcon_cfb8; fb->margins = tcx_margins; fb->loadcmap = tcx_loadcmap; if (prom_getbool (fb->prom_node, "hw-cursor")) { fb->setcursor = tcx_setcursor; fb->setcursormap = tcx_setcursormap; fb->setcurshape = tcx_setcurshape; } fb->restore_palette = tcx_restore_palette; fb->blank = tcx_blank; fb->unblank = tcx_unblank; fb->reset = tcx_reset; fb->physbase = 0; fb->mmap_map = tcx_mmap_map; /* Initialize Brooktree DAC */ fb->s.tcx.bt->addr = 0x04 << 24; /* color planes */ fb->s.tcx.bt->control = 0xff << 24; fb->s.tcx.bt->addr = 0x05 << 24; fb->s.tcx.bt->control = 0x00 << 24; fb->s.tcx.bt->addr = 0x06 << 24; /* overlay plane */ fb->s.tcx.bt->control = 0x73 << 24; fb->s.tcx.bt->addr = 0x07 << 24; fb->s.tcx.bt->control = 0x00 << 24; sprintf(idstring, "tcx at %x.%08lx Rev %d.%d %s", fb->iospace, phys, (fb->s.tcx.thc->thc_rev >> TCX_THC_REV_REV_SHIFT) & TCX_THC_REV_REV_MASK, (fb->s.tcx.thc->thc_rev >> TCX_THC_REV_MINREV_SHIFT) & TCX_THC_REV_MINREV_MASK, lowdepth ? "8-bit only" : "24-bit depth"); tcx_reset(fb); return idstring; }