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[PATCH] W1: w1_netlink: New init/fini netlink callbacks.
[linux-2.6/verdex.git] / drivers / video / console / bitblit.c
blob3c731577fed628796423193ca9d99c7be4967671
1 /*
2 * linux/drivers/video/console/bitblit.c -- BitBlitting Operation
3 *
4 * Originally from the 'accel_*' routines in drivers/video/console/fbcon.c
5 *
6 * Copyright (C) 2004 Antonino Daplas <adaplas @pol.net>
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive for
10 * more details.
11 */
12
13 #include <linux/config.h>
14 #include <linux/module.h>
15 #include <linux/string.h>
16 #include <linux/fb.h>
17 #include <linux/vt_kern.h>
18 #include <linux/console.h>
19 #include <asm/types.h>
20 #include "fbcon.h"
21
22 /*
23 * Accelerated handlers.
24 */
25 #define FBCON_ATTRIBUTE_UNDERLINE 1
26 #define FBCON_ATTRIBUTE_REVERSE 2
27 #define FBCON_ATTRIBUTE_BOLD 4
28
29 static inline int real_y(struct display *p, int ypos)
30 {
31 int rows = p->vrows;
32
33 ypos += p->yscroll;
34 return ypos < rows ? ypos : ypos - rows;
35 }
36
37
38 static inline int get_attribute(struct fb_info *info, u16 c)
39 {
40 int attribute = 0;
41
42 if (fb_get_color_depth(&info->var) == 1) {
43 if (attr_underline(c))
44 attribute |= FBCON_ATTRIBUTE_UNDERLINE;
45 if (attr_reverse(c))
46 attribute |= FBCON_ATTRIBUTE_REVERSE;
47 if (attr_bold(c))
48 attribute |= FBCON_ATTRIBUTE_BOLD;
49 }
50
51 return attribute;
52 }
53
54 static inline void update_attr(u8 *dst, u8 *src, int attribute,
55 struct vc_data *vc)
56 {
57 int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
58 int width = (vc->vc_font.width + 7) >> 3;
59 unsigned int cellsize = vc->vc_font.height * width;
60 u8 c;
61
62 offset = cellsize - (offset * width);
63 for (i = 0; i < cellsize; i++) {
64 c = src[i];
65 if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset)
66 c = 0xff;
67 if (attribute & FBCON_ATTRIBUTE_BOLD)
68 c |= c >> 1;
69 if (attribute & FBCON_ATTRIBUTE_REVERSE)
70 c = ~c;
71 dst[i] = c;
72 }
73 }
74
75 static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
76 int sx, int dy, int dx, int height, int width)
77 {
78 struct fb_copyarea area;
79
80 area.sx = sx * vc->vc_font.width;
81 area.sy = sy * vc->vc_font.height;
82 area.dx = dx * vc->vc_font.width;
83 area.dy = dy * vc->vc_font.height;
84 area.height = height * vc->vc_font.height;
85 area.width = width * vc->vc_font.width;
86
87 info->fbops->fb_copyarea(info, &area);
88 }
89
90 static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
91 int sx, int height, int width)
92 {
93 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
94 struct fb_fillrect region;
95
96 region.color = attr_bgcol_ec(bgshift, vc);
97 region.dx = sx * vc->vc_font.width;
98 region.dy = sy * vc->vc_font.height;
99 region.width = width * vc->vc_font.width;
100 region.height = height * vc->vc_font.height;
101 region.rop = ROP_COPY;
102
103 info->fbops->fb_fillrect(info, &region);
104 }
105
106 static void bit_putcs(struct vc_data *vc, struct fb_info *info,
107 const unsigned short *s, int count, int yy, int xx,
108 int fg, int bg)
109 {
110 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
111 unsigned int width = (vc->vc_font.width + 7) >> 3;
112 unsigned int cellsize = vc->vc_font.height * width;
113 unsigned int maxcnt = info->pixmap.size/cellsize;
114 unsigned int scan_align = info->pixmap.scan_align - 1;
115 unsigned int buf_align = info->pixmap.buf_align - 1;
116 unsigned int shift_low = 0, mod = vc->vc_font.width % 8;
117 unsigned int shift_high = 8, pitch, cnt, size, k;
118 unsigned int idx = vc->vc_font.width >> 3;
119 unsigned int attribute = get_attribute(info, scr_readw(s));
120 struct fb_image image;
121 u8 *src, *dst, *buf = NULL;
122
123 if (attribute) {
124 buf = kmalloc(cellsize, GFP_KERNEL);
125 if (!buf)
126 return;
127 }
128
129 image.fg_color = fg;
130 image.bg_color = bg;
131
132 image.dx = xx * vc->vc_font.width;
133 image.dy = yy * vc->vc_font.height;
134 image.height = vc->vc_font.height;
135 image.depth = 1;
136
137 while (count) {
138 if (count > maxcnt)
139 cnt = k = maxcnt;
140 else
141 cnt = k = count;
142
143 image.width = vc->vc_font.width * cnt;
144 pitch = ((image.width + 7) >> 3) + scan_align;
145 pitch &= ~scan_align;
146 size = pitch * image.height + buf_align;
147 size &= ~buf_align;
148 dst = fb_get_buffer_offset(info, &info->pixmap, size);
149 image.data = dst;
150 if (mod) {
151 while (k--) {
152 src = vc->vc_font.data + (scr_readw(s++)&
153 charmask)*cellsize;
154
155 if (attribute) {
156 update_attr(buf, src, attribute, vc);
157 src = buf;
158 }
159
160 fb_pad_unaligned_buffer(dst, pitch, src, idx,
161 image.height, shift_high,
162 shift_low, mod);
163 shift_low += mod;
164 dst += (shift_low >= 8) ? width : width - 1;
165 shift_low &= 7;
166 shift_high = 8 - shift_low;
167 }
168 } else {
169 while (k--) {
170 src = vc->vc_font.data + (scr_readw(s++)&
171 charmask)*cellsize;
172
173 if (attribute) {
174 update_attr(buf, src, attribute, vc);
175 src = buf;
176 }
177
178 fb_pad_aligned_buffer(dst, pitch, src, idx, image.height);
179 dst += width;
180 }
181 }
182 info->fbops->fb_imageblit(info, &image);
183 image.dx += cnt * vc->vc_font.width;
184 count -= cnt;
185 }
186
187 /* buf is always NULL except when in monochrome mode, so in this case
188 it's a gain to check buf against NULL even though kfree() handles
189 NULL pointers just fine */
190 if (unlikely(buf))
191 kfree(buf);
192 }
193
194 static void bit_clear_margins(struct vc_data *vc, struct fb_info *info,
195 int bottom_only)
196 {
197 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
198 unsigned int cw = vc->vc_font.width;
199 unsigned int ch = vc->vc_font.height;
200 unsigned int rw = info->var.xres - (vc->vc_cols*cw);
201 unsigned int bh = info->var.yres - (vc->vc_rows*ch);
202 unsigned int rs = info->var.xres - rw;
203 unsigned int bs = info->var.yres - bh;
204 struct fb_fillrect region;
205
206 region.color = attr_bgcol_ec(bgshift, vc);
207 region.rop = ROP_COPY;
208
209 if (rw && !bottom_only) {
210 region.dx = info->var.xoffset + rs;
211 region.dy = 0;
212 region.width = rw;
213 region.height = info->var.yres_virtual;
214 info->fbops->fb_fillrect(info, &region);
215 }
216
217 if (bh) {
218 region.dx = info->var.xoffset;
219 region.dy = info->var.yoffset + bs;
220 region.width = rs;
221 region.height = bh;
222 info->fbops->fb_fillrect(info, &region);
223 }
224 }
225
226 static void bit_cursor(struct vc_data *vc, struct fb_info *info,
227 struct display *p, int mode, int softback_lines, int fg, int bg)
228 {
229 struct fb_cursor cursor;
230 struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par;
231 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
232 int w = (vc->vc_font.width + 7) >> 3, c;
233 int y = real_y(p, vc->vc_y);
234 int attribute, use_sw = (vc->vc_cursor_type & 0x10);
235 char *src;
236
237 cursor.set = 0;
238
239 if (softback_lines) {
240 if (y + softback_lines >= vc->vc_rows) {
241 mode = CM_ERASE;
242 ops->cursor_flash = 0;
243 return;
244 } else
245 y += softback_lines;
246 }
247
248 c = scr_readw((u16 *) vc->vc_pos);
249 attribute = get_attribute(info, c);
250 src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));
251
252 if (ops->cursor_state.image.data != src ||
253 ops->cursor_reset) {
254 ops->cursor_state.image.data = src;
255 cursor.set |= FB_CUR_SETIMAGE;
256 }
257
258 if (attribute) {
259 u8 *dst;
260
261 dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC);
262 if (!dst)
263 return;
264 kfree(ops->cursor_data);
265 ops->cursor_data = dst;
266 update_attr(dst, src, attribute, vc);
267 src = dst;
268 }
269
270 if (ops->cursor_state.image.fg_color != fg ||
271 ops->cursor_state.image.bg_color != bg ||
272 ops->cursor_reset) {
273 ops->cursor_state.image.fg_color = fg;
274 ops->cursor_state.image.bg_color = bg;
275 cursor.set |= FB_CUR_SETCMAP;
276 }
277
278 if ((ops->cursor_state.image.dx != (vc->vc_font.width * vc->vc_x)) ||
279 (ops->cursor_state.image.dy != (vc->vc_font.height * y)) ||
280 ops->cursor_reset) {
281 ops->cursor_state.image.dx = vc->vc_font.width * vc->vc_x;
282 ops->cursor_state.image.dy = vc->vc_font.height * y;
283 cursor.set |= FB_CUR_SETPOS;
284 }
285
286 if (ops->cursor_state.image.height != vc->vc_font.height ||
287 ops->cursor_state.image.width != vc->vc_font.width ||
288 ops->cursor_reset) {
289 ops->cursor_state.image.height = vc->vc_font.height;
290 ops->cursor_state.image.width = vc->vc_font.width;
291 cursor.set |= FB_CUR_SETSIZE;
292 }
293
294 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
295 ops->cursor_reset) {
296 ops->cursor_state.hot.x = cursor.hot.y = 0;
297 cursor.set |= FB_CUR_SETHOT;
298 }
299
300 if (cursor.set & FB_CUR_SETSIZE ||
301 vc->vc_cursor_type != p->cursor_shape ||
302 ops->cursor_state.mask == NULL ||
303 ops->cursor_reset) {
304 char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC);
305 int cur_height, size, i = 0;
306 u8 msk = 0xff;
307
308 if (!mask)
309 return;
310
311 kfree(ops->cursor_state.mask);
312 ops->cursor_state.mask = mask;
313
314 p->cursor_shape = vc->vc_cursor_type;
315 cursor.set |= FB_CUR_SETSHAPE;
316
317 switch (p->cursor_shape & CUR_HWMASK) {
318 case CUR_NONE:
319 cur_height = 0;
320 break;
321 case CUR_UNDERLINE:
322 cur_height = (vc->vc_font.height < 10) ? 1 : 2;
323 break;
324 case CUR_LOWER_THIRD:
325 cur_height = vc->vc_font.height/3;
326 break;
327 case CUR_LOWER_HALF:
328 cur_height = vc->vc_font.height >> 1;
329 break;
330 case CUR_TWO_THIRDS:
331 cur_height = (vc->vc_font.height << 1)/3;
332 break;
333 case CUR_BLOCK:
334 default:
335 cur_height = vc->vc_font.height;
336 break;
337 }
338 size = (vc->vc_font.height - cur_height) * w;
339 while (size--)
340 mask[i++] = ~msk;
341 size = cur_height * w;
342 while (size--)
343 mask[i++] = msk;
344 }
345
346 switch (mode) {
347 case CM_ERASE:
348 ops->cursor_state.enable = 0;
349 break;
350 case CM_DRAW:
351 case CM_MOVE:
352 default:
353 ops->cursor_state.enable = (use_sw) ? 0 : 1;
354 break;
355 }
356
357 cursor.image.data = src;
358 cursor.image.fg_color = ops->cursor_state.image.fg_color;
359 cursor.image.bg_color = ops->cursor_state.image.bg_color;
360 cursor.image.dx = ops->cursor_state.image.dx;
361 cursor.image.dy = ops->cursor_state.image.dy;
362 cursor.image.height = ops->cursor_state.image.height;
363 cursor.image.width = ops->cursor_state.image.width;
364 cursor.hot.x = ops->cursor_state.hot.x;
365 cursor.hot.y = ops->cursor_state.hot.y;
366 cursor.mask = ops->cursor_state.mask;
367 cursor.enable = ops->cursor_state.enable;
368 cursor.image.depth = 1;
369 cursor.rop = ROP_XOR;
370
371 info->fbops->fb_cursor(info, &cursor);
372
373 ops->cursor_reset = 0;
374 }
375
376 void fbcon_set_bitops(struct fbcon_ops *ops)
377 {
378 ops->bmove = bit_bmove;
379 ops->clear = bit_clear;
380 ops->putcs = bit_putcs;
381 ops->clear_margins = bit_clear_margins;
382 ops->cursor = bit_cursor;
383 }
384
385 EXPORT_SYMBOL(fbcon_set_bitops);
386
387 MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
388 MODULE_DESCRIPTION("Bit Blitting Operation");
389 MODULE_LICENSE("GPL");
390
Verdex Pro support