drivers/video/fbdev/core/tileblit.c

   1 /*
   2  *  linux/drivers/video/console/tileblit.c -- Tile Blitting Operation
   3  *
   4  *      Copyright (C) 2004 Antonino Daplas <adaplas @pol.net>
   5  *
   6  *  This file is subject to the terms and conditions of the GNU General Public
   7  *  License.  See the file COPYING in the main directory of this archive for
   8  *  more details.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/string.h>
  13 #include <linux/fb.h>
  14 #include <linux/vt_kern.h>
  15 #include <linux/console.h>
  16 #include <asm/types.h>
  17 #include "fbcon.h"
  18
  19 static void tile_bmove(struct vc_data *vc, struct fb_info *info, int sy,
  20                        int sx, int dy, int dx, int height, int width)
  21 {
  22         struct fb_tilearea area;
  23
  24         area.sx = sx;
  25         area.sy = sy;
  26         area.dx = dx;
  27         area.dy = dy;
  28         area.height = height;
  29         area.width = width;
  30
  31         info->tileops->fb_tilecopy(info, &area);
  32 }
  33
  34 static void tile_clear(struct vc_data *vc, struct fb_info *info, int sy,
  35                        int sx, int height, int width)
  36 {
  37         struct fb_tilerect rect;
  38         int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
  39         int fgshift = (vc->vc_hi_font_mask) ? 9 : 8;
  40
  41         rect.index = vc->vc_video_erase_char &
  42                 ((vc->vc_hi_font_mask) ? 0x1ff : 0xff);
  43         rect.fg = attr_fgcol_ec(fgshift, vc, info);
  44         rect.bg = attr_bgcol_ec(bgshift, vc, info);
  45         rect.sx = sx;
  46         rect.sy = sy;
  47         rect.width = width;
  48         rect.height = height;
  49         rect.rop = ROP_COPY;
  50
  51         info->tileops->fb_tilefill(info, &rect);
  52 }
  53
  54 static void tile_putcs(struct vc_data *vc, struct fb_info *info,
  55                        const unsigned short *s, int count, int yy, int xx,
  56                        int fg, int bg)
  57 {
  58         struct fb_tileblit blit;
  59         unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
  60         int size = sizeof(u32) * count, i;
  61
  62         blit.sx = xx;
  63         blit.sy = yy;
  64         blit.width = count;
  65         blit.height = 1;
  66         blit.fg = fg;
  67         blit.bg = bg;
  68         blit.length = count;
  69         blit.indices = (u32 *) fb_get_buffer_offset(info, &info->pixmap, size);
  70         for (i = 0; i < count; i++)
  71                 blit.indices[i] = (u32)(scr_readw(s++) & charmask);
  72
  73         info->tileops->fb_tileblit(info, &blit);
  74 }
  75
  76 static void tile_clear_margins(struct vc_data *vc, struct fb_info *info,
  77                                int color, int bottom_only)
  78 {
  79         return;
  80 }
  81
  82 static void tile_cursor(struct vc_data *vc, struct fb_info *info, int mode,
  83                         int softback_lines, int fg, int bg)
  84 {
  85         struct fb_tilecursor cursor;
  86         int use_sw = (vc->vc_cursor_type & 0x10);
  87
  88         cursor.sx = vc->vc_x;
  89         cursor.sy = vc->vc_y;
  90         cursor.mode = (mode == CM_ERASE || use_sw) ? 0 : 1;
  91         cursor.fg = fg;
  92         cursor.bg = bg;
  93
  94         switch (vc->vc_cursor_type & 0x0f) {
  95         case CUR_NONE:
  96                 cursor.shape = FB_TILE_CURSOR_NONE;
  97                 break;
  98         case CUR_UNDERLINE:
  99                 cursor.shape = FB_TILE_CURSOR_UNDERLINE;
 100                 break;
 101         case CUR_LOWER_THIRD:
 102                 cursor.shape = FB_TILE_CURSOR_LOWER_THIRD;
 103                 break;
 104         case CUR_LOWER_HALF:
 105                 cursor.shape = FB_TILE_CURSOR_LOWER_HALF;
 106                 break;
 107         case CUR_TWO_THIRDS:
 108                 cursor.shape = FB_TILE_CURSOR_TWO_THIRDS;
 109                 break;
 110         case CUR_BLOCK:
 111         default:
 112                 cursor.shape = FB_TILE_CURSOR_BLOCK;
 113                 break;
 114         }
 115
 116         info->tileops->fb_tilecursor(info, &cursor);
 117 }
 118
 119 static int tile_update_start(struct fb_info *info)
 120 {
 121         struct fbcon_ops *ops = info->fbcon_par;
 122         int err;
 123
 124         err = fb_pan_display(info, &ops->var);
 125         ops->var.xoffset = info->var.xoffset;
 126         ops->var.yoffset = info->var.yoffset;
 127         ops->var.vmode = info->var.vmode;
 128         return err;
 129 }
 130
 131 void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info)
 132 {
 133         struct fb_tilemap map;
 134         struct fbcon_ops *ops = info->fbcon_par;
 135
 136         ops->bmove = tile_bmove;
 137         ops->clear = tile_clear;
 138         ops->putcs = tile_putcs;
 139         ops->clear_margins = tile_clear_margins;
 140         ops->cursor = tile_cursor;
 141         ops->update_start = tile_update_start;
 142
 143         if (ops->p) {
 144                 map.width = vc->vc_font.width;
 145                 map.height = vc->vc_font.height;
 146                 map.depth = 1;
 147                 map.length = (ops->p->userfont) ?
 148                         FNTCHARCNT(ops->p->fontdata) : 256;
 149                 map.data = ops->p->fontdata;
 150                 info->tileops->fb_settile(info, &map);
 151         }
 152 }
 153
 154 EXPORT_SYMBOL(fbcon_set_tileops);