linux/drivers/video/fbdev/core/tileblit.c
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   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 <linux/font.h>
  17#include <asm/types.h>
  18#include "fbcon.h"
  19
  20static 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
  35static 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, info);
  45        rect.bg = attr_bgcol_ec(bgshift, vc, info);
  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
  55static 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
  77static void tile_clear_margins(struct vc_data *vc, struct fb_info *info,
  78                               int color, int bottom_only)
  79{
  80        return;
  81}
  82
  83static void tile_cursor(struct vc_data *vc, struct fb_info *info, int mode,
  84                        int fg, int bg)
  85{
  86        struct fb_tilecursor cursor;
  87        int use_sw = vc->vc_cursor_type & CUR_SW;
  88
  89        cursor.sx = vc->state.x;
  90        cursor.sy = vc->state.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
 120static 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
 132void 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
 155EXPORT_SYMBOL(fbcon_set_tileops);
 156