drivers/video/console/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/config.h>
  12 #include <linux/module.h>
  13 #include <linux/string.h>
  14 #include <linux/fb.h>
  15 #include <linux/vt_kern.h>
  16 #include <linux/console.h>
  17 #include <asm/types.h>
  18 #include "fbcon.h"
  19
  20 static void tile_bmove(struct vc_data *vc, struct fb_info *info, int sy,
  21                        int sx, int dy, int dx, int height, int width)
  22 {
  23         struct fb_tilearea area;
  24
  25         area.sx = sx;
  26         area.sy = sy;
  27         area.dx = dx;
  28         area.dy = dy;
  29         area.height = height;
  30         area.width = width;
  31
  32         info->tileops->fb_tilecopy(info, &area);
  33 }
  34
  35 static void tile_clear(struct vc_data *vc, struct fb_info *info, int sy,
  36                        int sx, int height, int width)
  37 {
  38         struct fb_tilerect rect;
  39         int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
  40         int fgshift = (vc->vc_hi_font_mask) ? 9 : 8;
  41
  42         rect.index = vc->vc_video_erase_char &
  43                 ((vc->vc_hi_font_mask) ? 0x1ff : 0xff);
  44         rect.fg = attr_fgcol_ec(fgshift, vc);
  45         rect.bg = attr_bgcol_ec(bgshift, vc);
  46         rect.sx = sx;
  47         rect.sy = sy;
  48         rect.width = width;
  49         rect.height = height;
  50         rect.rop = ROP_COPY;
  51
  52         info->tileops->fb_tilefill(info, &rect);
  53 }
  54
  55 static void tile_putcs(struct vc_data *vc, struct fb_info *info,
  56                        const unsigned short *s, int count, int yy, int xx,
  57                        int fg, int bg)
  58 {
  59         struct fb_tileblit blit;
  60         unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
  61         int size = sizeof(u32) * count, i;
  62
  63         blit.sx = xx;
  64         blit.sy = yy;
  65         blit.width = count;
  66         blit.height = 1;
  67         blit.fg = fg;
  68         blit.bg = bg;
  69         blit.length = count;
  70         blit.indices = (u32 *) fb_get_buffer_offset(info, &info->pixmap, size);
  71         for (i = 0; i < count; i++)
  72                 blit.indices[i] = (u32)(scr_readw(s++) & charmask);
  73
  74         info->tileops->fb_tileblit(info, &blit);
  75 }
  76
  77 static void tile_clear_margins(struct vc_data *vc, struct fb_info *info,
  78                                int bottom_only)
  79 {
  80         return;
  81 }
  82
  83 static void tile_cursor(struct vc_data *vc, struct fb_info *info, int mode,
  84                         int softback_lines, int fg, int bg)
  85 {
  86         struct fb_tilecursor cursor;
  87         int use_sw = (vc->vc_cursor_type & 0x01);
  88
  89         cursor.sx = vc->vc_x;
  90         cursor.sy = vc->vc_y;
  91         cursor.mode = (mode == CM_ERASE || use_sw) ? 0 : 1;
  92         cursor.fg = fg;
  93         cursor.bg = bg;
  94
  95         switch (vc->vc_cursor_type & 0x0f) {
  96         case CUR_NONE:
  97                 cursor.shape = FB_TILE_CURSOR_NONE;
  98                 break;
  99         case CUR_UNDERLINE:
 100                 cursor.shape = FB_TILE_CURSOR_UNDERLINE;
 101                 break;
 102         case CUR_LOWER_THIRD:
 103                 cursor.shape = FB_TILE_CURSOR_LOWER_THIRD;
 104                 break;
 105         case CUR_LOWER_HALF:
 106                 cursor.shape = FB_TILE_CURSOR_LOWER_HALF;
 107                 break;
 108         case CUR_TWO_THIRDS:
 109                 cursor.shape = FB_TILE_CURSOR_TWO_THIRDS;
 110                 break;
 111         case CUR_BLOCK:
 112         default:
 113                 cursor.shape = FB_TILE_CURSOR_BLOCK;
 114                 break;
 115         }
 116
 117         info->tileops->fb_tilecursor(info, &cursor);
 118 }
 119
 120 static int tile_update_start(struct fb_info *info)
 121 {
 122         struct fbcon_ops *ops = info->fbcon_par;
 123         int err;
 124
 125         err = fb_pan_display(info, &ops->var);
 126         ops->var.xoffset = info->var.xoffset;
 127         ops->var.yoffset = info->var.yoffset;
 128         ops->var.vmode = info->var.vmode;
 129         return err;
 130 }
 131
 132 void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info)
 133 {
 134         struct fb_tilemap map;
 135         struct fbcon_ops *ops = info->fbcon_par;
 136
 137         ops->bmove = tile_bmove;
 138         ops->clear = tile_clear;
 139         ops->putcs = tile_putcs;
 140         ops->clear_margins = tile_clear_margins;
 141         ops->cursor = tile_cursor;
 142         ops->update_start = tile_update_start;
 143
 144         if (ops->p) {
 145                 map.width = vc->vc_font.width;
 146                 map.height = vc->vc_font.height;
 147                 map.depth = 1;
 148                 map.length = (ops->p->userfont) ?
 149                         FNTCHARCNT(ops->p->fontdata) : 256;
 150                 map.data = ops->p->fontdata;
 151                 info->tileops->fb_settile(info, &map);
 152         }
 153 }
 154
 155 EXPORT_SYMBOL(fbcon_set_tileops);
 156
 157 MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
 158 MODULE_DESCRIPTION("Tile Blitting Operation");
 159 MODULE_LICENSE("GPL");
 160