2 * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 180 degrees
4 * Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
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
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/string.h>
15 #include <linux/vt_kern.h>
16 #include <linux/console.h>
17 #include <asm/types.h>
19 #include "fbcon_rotate.h"
22 * Rotation 180 degrees
25 static inline void ud_update_attr(u8 *dst, u8 *src, int attribute,
28 int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
29 int width = (vc->vc_font.width + 7) >> 3;
30 unsigned int cellsize = vc->vc_font.height * width;
33 offset = offset * width;
35 for (i = 0; i < cellsize; i++) {
37 if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i < offset)
39 if (attribute & FBCON_ATTRIBUTE_BOLD)
41 if (attribute & FBCON_ATTRIBUTE_REVERSE)
48 static void ud_bmove(struct vc_data *vc, struct fb_info *info, int sy,
49 int sx, int dy, int dx, int height, int width)
51 struct display *p = &fb_display[vc->vc_num];
52 struct fb_copyarea area;
53 u32 vyres = GETVYRES(p->scrollmode, info);
54 u32 vxres = GETVXRES(p->scrollmode, info);
56 area.sy = vyres - ((sy + height) * vc->vc_font.height);
57 area.sx = vxres - ((sx + width) * vc->vc_font.width);
58 area.dy = vyres - ((dy + height) * vc->vc_font.height);
59 area.dx = vxres - ((dx + width) * vc->vc_font.width);
60 area.height = height * vc->vc_font.height;
61 area.width = width * vc->vc_font.width;
63 info->fbops->fb_copyarea(info, &area);
66 static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy,
67 int sx, int height, int width)
69 struct display *p = &fb_display[vc->vc_num];
70 struct fb_fillrect region;
71 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
72 u32 vyres = GETVYRES(p->scrollmode, info);
73 u32 vxres = GETVXRES(p->scrollmode, info);
75 region.color = attr_bgcol_ec(bgshift,vc);
76 region.dy = vyres - ((sy + height) * vc->vc_font.height);
77 region.dx = vxres - ((sx + width) * vc->vc_font.width);
78 region.width = width * vc->vc_font.width;
79 region.height = height * vc->vc_font.height;
80 region.rop = ROP_COPY;
82 info->fbops->fb_fillrect(info, ®ion);
85 static inline void ud_putcs_aligned(struct vc_data *vc, struct fb_info *info,
86 const u16 *s, u32 attr, u32 cnt,
87 u32 d_pitch, u32 s_pitch, u32 cellsize,
88 struct fb_image *image, u8 *buf, u8 *dst)
90 struct fbcon_ops *ops = info->fbcon_par;
91 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
92 u32 idx = vc->vc_font.width >> 3;
96 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
99 ud_update_attr(buf, src, attr, vc);
103 if (likely(idx == 1))
104 __fb_pad_aligned_buffer(dst, d_pitch, src, idx,
107 fb_pad_aligned_buffer(dst, d_pitch, src, idx,
113 info->fbops->fb_imageblit(info, image);
116 static inline void ud_putcs_unaligned(struct vc_data *vc,
117 struct fb_info *info, const u16 *s,
118 u32 attr, u32 cnt, u32 d_pitch,
119 u32 s_pitch, u32 cellsize,
120 struct fb_image *image, u8 *buf,
123 struct fbcon_ops *ops = info->fbcon_par;
124 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
125 u32 shift_low = 0, mod = vc->vc_font.width % 8;
127 u32 idx = vc->vc_font.width >> 3;
131 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
134 ud_update_attr(buf, src, attr, vc);
138 fb_pad_unaligned_buffer(dst, d_pitch, src, idx,
139 image->height, shift_high,
142 dst += (shift_low >= 8) ? s_pitch : s_pitch - 1;
144 shift_high = 8 - shift_low;
147 info->fbops->fb_imageblit(info, image);
151 static void ud_putcs(struct vc_data *vc, struct fb_info *info,
152 const unsigned short *s, int count, int yy, int xx,
155 struct fb_image image;
156 struct display *p = &fb_display[vc->vc_num];
157 struct fbcon_ops *ops = info->fbcon_par;
158 u32 width = (vc->vc_font.width + 7)/8;
159 u32 cellsize = width * vc->vc_font.height;
160 u32 maxcnt = info->pixmap.size/cellsize;
161 u32 scan_align = info->pixmap.scan_align - 1;
162 u32 buf_align = info->pixmap.buf_align - 1;
163 u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
164 u32 attribute = get_attribute(info, scr_readw(s));
165 u8 *dst, *buf = NULL;
166 u32 vyres = GETVYRES(p->scrollmode, info);
167 u32 vxres = GETVXRES(p->scrollmode, info);
169 if (!ops->fontbuffer)
174 image.dy = vyres - ((yy * vc->vc_font.height) + vc->vc_font.height);
175 image.dx = vxres - ((xx + count) * vc->vc_font.width);
176 image.height = vc->vc_font.height;
180 buf = kmalloc(cellsize, GFP_KERNEL);
193 image.width = vc->vc_font.width * cnt;
194 pitch = ((image.width + 7) >> 3) + scan_align;
195 pitch &= ~scan_align;
196 size = pitch * image.height + buf_align;
198 dst = fb_get_buffer_offset(info, &info->pixmap, size);
202 ud_putcs_aligned(vc, info, s, attribute, cnt, pitch,
203 width, cellsize, &image, buf, dst);
205 ud_putcs_unaligned(vc, info, s, attribute, cnt, pitch,
206 width, cellsize, &image,
209 image.dx += image.width;
215 /* buf is always NULL except when in monochrome mode, so in this case
216 it's a gain to check buf against NULL even though kfree() handles
217 NULL pointers just fine */
223 static void ud_clear_margins(struct vc_data *vc, struct fb_info *info,
226 unsigned int cw = vc->vc_font.width;
227 unsigned int ch = vc->vc_font.height;
228 unsigned int rw = info->var.xres - (vc->vc_cols*cw);
229 unsigned int bh = info->var.yres - (vc->vc_rows*ch);
230 struct fb_fillrect region;
231 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
233 region.color = attr_bgcol_ec(bgshift,vc);
234 region.rop = ROP_COPY;
236 if (rw && !bottom_only) {
238 region.dx = info->var.xoffset;
240 region.height = info->var.yres_virtual;
241 info->fbops->fb_fillrect(info, ®ion);
245 region.dy = info->var.yoffset;
246 region.dx = info->var.xoffset;
248 region.width = info->var.xres;
249 info->fbops->fb_fillrect(info, ®ion);
253 static void ud_cursor(struct vc_data *vc, struct fb_info *info,
254 struct display *p, int mode, int softback_lines,
257 struct fb_cursor cursor;
258 struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par;
259 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
260 int w = (vc->vc_font.width + 7) >> 3, c;
261 int y = real_y(p, vc->vc_y);
262 int attribute, use_sw = (vc->vc_cursor_type & 0x10);
265 u32 vyres = GETVYRES(p->scrollmode, info);
266 u32 vxres = GETVXRES(p->scrollmode, info);
268 if (!ops->fontbuffer)
273 if (softback_lines) {
274 if (y + softback_lines >= vc->vc_rows) {
276 ops->cursor_flash = 0;
282 c = scr_readw((u16 *) vc->vc_pos);
283 attribute = get_attribute(info, c);
284 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height));
286 if (ops->cursor_state.image.data != src ||
288 ops->cursor_state.image.data = src;
289 cursor.set |= FB_CUR_SETIMAGE;
295 dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC);
298 kfree(ops->cursor_data);
299 ops->cursor_data = dst;
300 ud_update_attr(dst, src, attribute, vc);
304 if (ops->cursor_state.image.fg_color != fg ||
305 ops->cursor_state.image.bg_color != bg ||
307 ops->cursor_state.image.fg_color = fg;
308 ops->cursor_state.image.bg_color = bg;
309 cursor.set |= FB_CUR_SETCMAP;
312 if (ops->cursor_state.image.height != vc->vc_font.height ||
313 ops->cursor_state.image.width != vc->vc_font.width ||
315 ops->cursor_state.image.height = vc->vc_font.height;
316 ops->cursor_state.image.width = vc->vc_font.width;
317 cursor.set |= FB_CUR_SETSIZE;
320 dy = vyres - ((y * vc->vc_font.height) + vc->vc_font.height);
321 dx = vxres - ((vc->vc_x * vc->vc_font.width) + vc->vc_font.width);
323 if (ops->cursor_state.image.dx != dx ||
324 ops->cursor_state.image.dy != dy ||
326 ops->cursor_state.image.dx = dx;
327 ops->cursor_state.image.dy = dy;
328 cursor.set |= FB_CUR_SETPOS;
331 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
333 ops->cursor_state.hot.x = cursor.hot.y = 0;
334 cursor.set |= FB_CUR_SETHOT;
337 if (cursor.set & FB_CUR_SETSIZE ||
338 vc->vc_cursor_type != p->cursor_shape ||
339 ops->cursor_state.mask == NULL ||
341 char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC);
342 int cur_height, size, i = 0;
348 kfree(ops->cursor_state.mask);
349 ops->cursor_state.mask = mask;
351 p->cursor_shape = vc->vc_cursor_type;
352 cursor.set |= FB_CUR_SETSHAPE;
354 switch (p->cursor_shape & CUR_HWMASK) {
359 cur_height = (vc->vc_font.height < 10) ? 1 : 2;
361 case CUR_LOWER_THIRD:
362 cur_height = vc->vc_font.height/3;
365 cur_height = vc->vc_font.height >> 1;
368 cur_height = (vc->vc_font.height << 1)/3;
372 cur_height = vc->vc_font.height;
376 size = cur_height * w;
381 size = (vc->vc_font.height - cur_height) * w;
389 ops->cursor_state.enable = 0;
394 ops->cursor_state.enable = (use_sw) ? 0 : 1;
398 cursor.image.data = src;
399 cursor.image.fg_color = ops->cursor_state.image.fg_color;
400 cursor.image.bg_color = ops->cursor_state.image.bg_color;
401 cursor.image.dx = ops->cursor_state.image.dx;
402 cursor.image.dy = ops->cursor_state.image.dy;
403 cursor.image.height = ops->cursor_state.image.height;
404 cursor.image.width = ops->cursor_state.image.width;
405 cursor.hot.x = ops->cursor_state.hot.x;
406 cursor.hot.y = ops->cursor_state.hot.y;
407 cursor.mask = ops->cursor_state.mask;
408 cursor.enable = ops->cursor_state.enable;
409 cursor.image.depth = 1;
410 cursor.rop = ROP_XOR;
412 if (info->fbops->fb_cursor)
413 err = info->fbops->fb_cursor(info, &cursor);
416 soft_cursor(info, &cursor);
418 ops->cursor_reset = 0;
421 int ud_update_start(struct fb_info *info)
423 struct fbcon_ops *ops = info->fbcon_par;
424 struct display *p = &fb_display[ops->currcon];
425 u32 xoffset, yoffset;
426 u32 vyres = GETVYRES(p->scrollmode, info);
427 u32 vxres = GETVXRES(p->scrollmode, info);
430 xoffset = (vxres - info->var.xres) - ops->var.xoffset;
431 yoffset = (vyres - info->var.yres) - ops->var.yoffset;
432 ops->var.xoffset = xoffset;
433 ops->var.yoffset = yoffset;
434 err = fb_pan_display(info, &ops->var);
435 ops->var.xoffset = info->var.xoffset;
436 ops->var.yoffset = info->var.yoffset;
437 ops->var.vmode = info->var.vmode;
441 void fbcon_rotate_ud(struct fbcon_ops *ops)
443 ops->bmove = ud_bmove;
444 ops->clear = ud_clear;
445 ops->putcs = ud_putcs;
446 ops->clear_margins = ud_clear_margins;
447 ops->cursor = ud_cursor;
448 ops->update_start = ud_update_start;
450 EXPORT_SYMBOL(fbcon_rotate_ud);
452 MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
453 MODULE_DESCRIPTION("Console Rotation (180 degrees) Support");
454 MODULE_LICENSE("GPL");