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https://github.com/torvalds/linux
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74c1c8b332
This adds a new command line option to select the fbcon margin color. The motivation for this is screens where black does not blend into the physical surroundings of the screen. For example, using an LCD (not the backlit kind), white text on a black background is hard to read, so inverting the colors is preferred. However, when you do this, most of the screen is filled with white but the margins are still filled with black. This makes a big, black, backwards 'L' on the screen. By setting fbcon=margin:7, the margins will be filled with white and the LCD looks as expected. Signed-off-by: David Lechner <david@lechnology.com> [b.zolnierkie: ported over fbcon changes] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
155 lines
3.7 KiB
C
155 lines
3.7 KiB
C
/*
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* linux/drivers/video/console/tileblit.c -- Tile Blitting Operation
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*
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* Copyright (C) 2004 Antonino Daplas <adaplas @pol.net>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/fb.h>
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#include <linux/vt_kern.h>
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#include <linux/console.h>
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#include <asm/types.h>
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#include "fbcon.h"
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static void tile_bmove(struct vc_data *vc, struct fb_info *info, int sy,
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int sx, int dy, int dx, int height, int width)
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{
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struct fb_tilearea area;
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area.sx = sx;
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area.sy = sy;
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area.dx = dx;
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area.dy = dy;
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area.height = height;
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area.width = width;
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info->tileops->fb_tilecopy(info, &area);
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}
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static void tile_clear(struct vc_data *vc, struct fb_info *info, int sy,
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int sx, int height, int width)
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{
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struct fb_tilerect rect;
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int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
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int fgshift = (vc->vc_hi_font_mask) ? 9 : 8;
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rect.index = vc->vc_video_erase_char &
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((vc->vc_hi_font_mask) ? 0x1ff : 0xff);
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rect.fg = attr_fgcol_ec(fgshift, vc, info);
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rect.bg = attr_bgcol_ec(bgshift, vc, info);
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rect.sx = sx;
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rect.sy = sy;
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rect.width = width;
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rect.height = height;
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rect.rop = ROP_COPY;
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info->tileops->fb_tilefill(info, &rect);
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}
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static void tile_putcs(struct vc_data *vc, struct fb_info *info,
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const unsigned short *s, int count, int yy, int xx,
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int fg, int bg)
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{
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struct fb_tileblit blit;
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unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
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int size = sizeof(u32) * count, i;
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blit.sx = xx;
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blit.sy = yy;
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blit.width = count;
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blit.height = 1;
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blit.fg = fg;
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blit.bg = bg;
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blit.length = count;
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blit.indices = (u32 *) fb_get_buffer_offset(info, &info->pixmap, size);
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for (i = 0; i < count; i++)
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blit.indices[i] = (u32)(scr_readw(s++) & charmask);
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info->tileops->fb_tileblit(info, &blit);
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}
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static void tile_clear_margins(struct vc_data *vc, struct fb_info *info,
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int color, int bottom_only)
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{
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return;
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}
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static void tile_cursor(struct vc_data *vc, struct fb_info *info, int mode,
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int softback_lines, int fg, int bg)
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{
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struct fb_tilecursor cursor;
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int use_sw = (vc->vc_cursor_type & 0x10);
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cursor.sx = vc->vc_x;
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cursor.sy = vc->vc_y;
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cursor.mode = (mode == CM_ERASE || use_sw) ? 0 : 1;
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cursor.fg = fg;
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cursor.bg = bg;
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switch (vc->vc_cursor_type & 0x0f) {
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case CUR_NONE:
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cursor.shape = FB_TILE_CURSOR_NONE;
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break;
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case CUR_UNDERLINE:
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cursor.shape = FB_TILE_CURSOR_UNDERLINE;
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break;
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case CUR_LOWER_THIRD:
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cursor.shape = FB_TILE_CURSOR_LOWER_THIRD;
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break;
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case CUR_LOWER_HALF:
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cursor.shape = FB_TILE_CURSOR_LOWER_HALF;
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break;
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case CUR_TWO_THIRDS:
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cursor.shape = FB_TILE_CURSOR_TWO_THIRDS;
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break;
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case CUR_BLOCK:
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default:
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cursor.shape = FB_TILE_CURSOR_BLOCK;
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break;
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}
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info->tileops->fb_tilecursor(info, &cursor);
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}
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static int tile_update_start(struct fb_info *info)
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{
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struct fbcon_ops *ops = info->fbcon_par;
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int err;
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err = fb_pan_display(info, &ops->var);
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ops->var.xoffset = info->var.xoffset;
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ops->var.yoffset = info->var.yoffset;
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ops->var.vmode = info->var.vmode;
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return err;
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}
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void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info)
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{
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struct fb_tilemap map;
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struct fbcon_ops *ops = info->fbcon_par;
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ops->bmove = tile_bmove;
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ops->clear = tile_clear;
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ops->putcs = tile_putcs;
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ops->clear_margins = tile_clear_margins;
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ops->cursor = tile_cursor;
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ops->update_start = tile_update_start;
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if (ops->p) {
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map.width = vc->vc_font.width;
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map.height = vc->vc_font.height;
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map.depth = 1;
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map.length = (ops->p->userfont) ?
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FNTCHARCNT(ops->p->fontdata) : 256;
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map.data = ops->p->fontdata;
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info->tileops->fb_settile(info, &map);
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}
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}
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EXPORT_SYMBOL(fbcon_set_tileops);
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