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Add linux-next specific files for 20110801
[linux-2.6/next.git] / drivers / video / console / fbcon_ud.c
blobff0872c0498bd6e32bdb22b6a91f55f40796e7ef
1 /*
2 * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 180 degrees
3 *
4 * Copyright (C) 2005 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/slab.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 #include "fbcon_rotate.h"
20
21 /*
22 * Rotation 180 degrees
23 */
24
25 static void ud_update_attr(u8 *dst, u8 *src, int attribute,
26 struct vc_data *vc)
27 {
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;
31 u8 c;
32
33 offset = offset * width;
34
35 for (i = 0; i < cellsize; i++) {
36 c = src[i];
37 if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i < offset)
38 c = 0xff;
39 if (attribute & FBCON_ATTRIBUTE_BOLD)
40 c |= c << 1;
41 if (attribute & FBCON_ATTRIBUTE_REVERSE)
42 c = ~c;
43 dst[i] = c;
44 }
45 }
46
47
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)
50 {
51 struct fbcon_ops *ops = info->fbcon_par;
52 struct fb_copyarea area;
53 u32 vyres = GETVYRES(ops->p->scrollmode, info);
54 u32 vxres = GETVXRES(ops->p->scrollmode, info);
55
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;
62
63 info->fbops->fb_copyarea(info, &area);
64 }
65
66 static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy,
67 int sx, int height, int width)
68 {
69 struct fbcon_ops *ops = info->fbcon_par;
70 struct fb_fillrect region;
71 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
72 u32 vyres = GETVYRES(ops->p->scrollmode, info);
73 u32 vxres = GETVXRES(ops->p->scrollmode, info);
74
75 region.color = attr_bgcol_ec(bgshift,vc,info);
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;
81
82 info->fbops->fb_fillrect(info, &region);
83 }
84
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)
89 {
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;
93 u8 *src;
94
95 while (cnt--) {
96 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
97
98 if (attr) {
99 ud_update_attr(buf, src, attr, vc);
100 src = buf;
101 }
102
103 if (likely(idx == 1))
104 __fb_pad_aligned_buffer(dst, d_pitch, src, idx,
105 image->height);
106 else
107 fb_pad_aligned_buffer(dst, d_pitch, src, idx,
108 image->height);
109
110 dst += s_pitch;
111 }
112
113 info->fbops->fb_imageblit(info, image);
114 }
115
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,
121 u8 *dst)
122 {
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;
126 u32 shift_high = 8;
127 u32 idx = vc->vc_font.width >> 3;
128 u8 *src;
129
130 while (cnt--) {
131 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
132
133 if (attr) {
134 ud_update_attr(buf, src, attr, vc);
135 src = buf;
136 }
137
138 fb_pad_unaligned_buffer(dst, d_pitch, src, idx,
139 image->height, shift_high,
140 shift_low, mod);
141 shift_low += mod;
142 dst += (shift_low >= 8) ? s_pitch : s_pitch - 1;
143 shift_low &= 7;
144 shift_high = 8 - shift_low;
145 }
146
147 info->fbops->fb_imageblit(info, image);
148
149 }
150
151 static void ud_putcs(struct vc_data *vc, struct fb_info *info,
152 const unsigned short *s, int count, int yy, int xx,
153 int fg, int bg)
154 {
155 struct fb_image image;
156 struct fbcon_ops *ops = info->fbcon_par;
157 u32 width = (vc->vc_font.width + 7)/8;
158 u32 cellsize = width * vc->vc_font.height;
159 u32 maxcnt = info->pixmap.size/cellsize;
160 u32 scan_align = info->pixmap.scan_align - 1;
161 u32 buf_align = info->pixmap.buf_align - 1;
162 u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
163 u32 attribute = get_attribute(info, scr_readw(s));
164 u8 *dst, *buf = NULL;
165 u32 vyres = GETVYRES(ops->p->scrollmode, info);
166 u32 vxres = GETVXRES(ops->p->scrollmode, info);
167
168 if (!ops->fontbuffer)
169 return;
170
171 image.fg_color = fg;
172 image.bg_color = bg;
173 image.dy = vyres - ((yy * vc->vc_font.height) + vc->vc_font.height);
174 image.dx = vxres - ((xx + count) * vc->vc_font.width);
175 image.height = vc->vc_font.height;
176 image.depth = 1;
177
178 if (attribute) {
179 buf = kmalloc(cellsize, GFP_KERNEL);
180 if (!buf)
181 return;
182 }
183
184 s += count - 1;
185
186 while (count) {
187 if (count > maxcnt)
188 cnt = maxcnt;
189 else
190 cnt = count;
191
192 image.width = vc->vc_font.width * cnt;
193 pitch = ((image.width + 7) >> 3) + scan_align;
194 pitch &= ~scan_align;
195 size = pitch * image.height + buf_align;
196 size &= ~buf_align;
197 dst = fb_get_buffer_offset(info, &info->pixmap, size);
198 image.data = dst;
199
200 if (!mod)
201 ud_putcs_aligned(vc, info, s, attribute, cnt, pitch,
202 width, cellsize, &image, buf, dst);
203 else
204 ud_putcs_unaligned(vc, info, s, attribute, cnt, pitch,
205 width, cellsize, &image,
206 buf, dst);
207
208 image.dx += image.width;
209 count -= cnt;
210 s -= cnt;
211 xx += cnt;
212 }
213
214 /* buf is always NULL except when in monochrome mode, so in this case
215 it's a gain to check buf against NULL even though kfree() handles
216 NULL pointers just fine */
217 if (unlikely(buf))
218 kfree(buf);
219
220 }
221
222 static void ud_clear_margins(struct vc_data *vc, struct fb_info *info,
223 int bottom_only)
224 {
225 unsigned int cw = vc->vc_font.width;
226 unsigned int ch = vc->vc_font.height;
227 unsigned int rw = info->var.xres - (vc->vc_cols*cw);
228 unsigned int bh = info->var.yres - (vc->vc_rows*ch);
229 struct fb_fillrect region;
230 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
231
232 region.color = attr_bgcol_ec(bgshift,vc,info);
233 region.rop = ROP_COPY;
234
235 if (rw && !bottom_only) {
236 region.dy = 0;
237 region.dx = info->var.xoffset;
238 region.width = rw;
239 region.height = info->var.yres_virtual;
240 info->fbops->fb_fillrect(info, &region);
241 }
242
243 if (bh) {
244 region.dy = info->var.yoffset;
245 region.dx = info->var.xoffset;
246 region.height = bh;
247 region.width = info->var.xres;
248 info->fbops->fb_fillrect(info, &region);
249 }
250 }
251
252 static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
253 int softback_lines, int fg, int bg)
254 {
255 struct fb_cursor cursor;
256 struct fbcon_ops *ops = info->fbcon_par;
257 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
258 int w = (vc->vc_font.width + 7) >> 3, c;
259 int y = real_y(ops->p, vc->vc_y);
260 int attribute, use_sw = (vc->vc_cursor_type & 0x10);
261 int err = 1, dx, dy;
262 char *src;
263 u32 vyres = GETVYRES(ops->p->scrollmode, info);
264 u32 vxres = GETVXRES(ops->p->scrollmode, info);
265
266 if (!ops->fontbuffer)
267 return;
268
269 cursor.set = 0;
270
271 if (softback_lines) {
272 if (y + softback_lines >= vc->vc_rows) {
273 mode = CM_ERASE;
274 ops->cursor_flash = 0;
275 return;
276 } else
277 y += softback_lines;
278 }
279
280 c = scr_readw((u16 *) vc->vc_pos);
281 attribute = get_attribute(info, c);
282 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height));
283
284 if (ops->cursor_state.image.data != src ||
285 ops->cursor_reset) {
286 ops->cursor_state.image.data = src;
287 cursor.set |= FB_CUR_SETIMAGE;
288 }
289
290 if (attribute) {
291 u8 *dst;
292
293 dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC);
294 if (!dst)
295 return;
296 kfree(ops->cursor_data);
297 ops->cursor_data = dst;
298 ud_update_attr(dst, src, attribute, vc);
299 src = dst;
300 }
301
302 if (ops->cursor_state.image.fg_color != fg ||
303 ops->cursor_state.image.bg_color != bg ||
304 ops->cursor_reset) {
305 ops->cursor_state.image.fg_color = fg;
306 ops->cursor_state.image.bg_color = bg;
307 cursor.set |= FB_CUR_SETCMAP;
308 }
309
310 if (ops->cursor_state.image.height != vc->vc_font.height ||
311 ops->cursor_state.image.width != vc->vc_font.width ||
312 ops->cursor_reset) {
313 ops->cursor_state.image.height = vc->vc_font.height;
314 ops->cursor_state.image.width = vc->vc_font.width;
315 cursor.set |= FB_CUR_SETSIZE;
316 }
317
318 dy = vyres - ((y * vc->vc_font.height) + vc->vc_font.height);
319 dx = vxres - ((vc->vc_x * vc->vc_font.width) + vc->vc_font.width);
320
321 if (ops->cursor_state.image.dx != dx ||
322 ops->cursor_state.image.dy != dy ||
323 ops->cursor_reset) {
324 ops->cursor_state.image.dx = dx;
325 ops->cursor_state.image.dy = dy;
326 cursor.set |= FB_CUR_SETPOS;
327 }
328
329 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
330 ops->cursor_reset) {
331 ops->cursor_state.hot.x = cursor.hot.y = 0;
332 cursor.set |= FB_CUR_SETHOT;
333 }
334
335 if (cursor.set & FB_CUR_SETSIZE ||
336 vc->vc_cursor_type != ops->p->cursor_shape ||
337 ops->cursor_state.mask == NULL ||
338 ops->cursor_reset) {
339 char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC);
340 int cur_height, size, i = 0;
341 u8 msk = 0xff;
342
343 if (!mask)
344 return;
345
346 kfree(ops->cursor_state.mask);
347 ops->cursor_state.mask = mask;
348
349 ops->p->cursor_shape = vc->vc_cursor_type;
350 cursor.set |= FB_CUR_SETSHAPE;
351
352 switch (ops->p->cursor_shape & CUR_HWMASK) {
353 case CUR_NONE:
354 cur_height = 0;
355 break;
356 case CUR_UNDERLINE:
357 cur_height = (vc->vc_font.height < 10) ? 1 : 2;
358 break;
359 case CUR_LOWER_THIRD:
360 cur_height = vc->vc_font.height/3;
361 break;
362 case CUR_LOWER_HALF:
363 cur_height = vc->vc_font.height >> 1;
364 break;
365 case CUR_TWO_THIRDS:
366 cur_height = (vc->vc_font.height << 1)/3;
367 break;
368 case CUR_BLOCK:
369 default:
370 cur_height = vc->vc_font.height;
371 break;
372 }
373
374 size = cur_height * w;
375
376 while (size--)
377 mask[i++] = msk;
378
379 size = (vc->vc_font.height - cur_height) * w;
380
381 while (size--)
382 mask[i++] = ~msk;
383 }
384
385 switch (mode) {
386 case CM_ERASE:
387 ops->cursor_state.enable = 0;
388 break;
389 case CM_DRAW:
390 case CM_MOVE:
391 default:
392 ops->cursor_state.enable = (use_sw) ? 0 : 1;
393 break;
394 }
395
396 cursor.image.data = src;
397 cursor.image.fg_color = ops->cursor_state.image.fg_color;
398 cursor.image.bg_color = ops->cursor_state.image.bg_color;
399 cursor.image.dx = ops->cursor_state.image.dx;
400 cursor.image.dy = ops->cursor_state.image.dy;
401 cursor.image.height = ops->cursor_state.image.height;
402 cursor.image.width = ops->cursor_state.image.width;
403 cursor.hot.x = ops->cursor_state.hot.x;
404 cursor.hot.y = ops->cursor_state.hot.y;
405 cursor.mask = ops->cursor_state.mask;
406 cursor.enable = ops->cursor_state.enable;
407 cursor.image.depth = 1;
408 cursor.rop = ROP_XOR;
409
410 if (info->fbops->fb_cursor)
411 err = info->fbops->fb_cursor(info, &cursor);
412
413 if (err)
414 soft_cursor(info, &cursor);
415
416 ops->cursor_reset = 0;
417 }
418
419 static int ud_update_start(struct fb_info *info)
420 {
421 struct fbcon_ops *ops = info->fbcon_par;
422 int xoffset, yoffset;
423 u32 vyres = GETVYRES(ops->p->scrollmode, info);
424 u32 vxres = GETVXRES(ops->p->scrollmode, info);
425 int err;
426
427 xoffset = vxres - info->var.xres - ops->var.xoffset;
428 yoffset = vyres - info->var.yres - ops->var.yoffset;
429 if (yoffset < 0)
430 yoffset += vyres;
431 ops->var.xoffset = xoffset;
432 ops->var.yoffset = yoffset;
433 err = fb_pan_display(info, &ops->var);
434 ops->var.xoffset = info->var.xoffset;
435 ops->var.yoffset = info->var.yoffset;
436 ops->var.vmode = info->var.vmode;
437 return err;
438 }
439
440 void fbcon_rotate_ud(struct fbcon_ops *ops)
441 {
442 ops->bmove = ud_bmove;
443 ops->clear = ud_clear;
444 ops->putcs = ud_putcs;
445 ops->clear_margins = ud_clear_margins;
446 ops->cursor = ud_cursor;
447 ops->update_start = ud_update_start;
448 }
449 EXPORT_SYMBOL(fbcon_rotate_ud);
450
451 MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
452 MODULE_DESCRIPTION("Console Rotation (180 degrees) Support");
453 MODULE_LICENSE("GPL");
linux-next