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33ee8297 AD |
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/config.h> | |
12 | #include <linux/module.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 inline 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 | { | |
ab767201 | 51 | struct fbcon_ops *ops = info->fbcon_par; |
33ee8297 | 52 | struct fb_copyarea area; |
ab767201 AD |
53 | u32 vyres = GETVYRES(ops->p->scrollmode, info); |
54 | u32 vxres = GETVXRES(ops->p->scrollmode, info); | |
33ee8297 AD |
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 | { | |
ab767201 | 69 | struct fbcon_ops *ops = info->fbcon_par; |
33ee8297 AD |
70 | struct fb_fillrect region; |
71 | int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; | |
ab767201 AD |
72 | u32 vyres = GETVYRES(ops->p->scrollmode, info); |
73 | u32 vxres = GETVXRES(ops->p->scrollmode, info); | |
33ee8297 AD |
74 | |
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; | |
81 | ||
82 | info->fbops->fb_fillrect(info, ®ion); | |
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; | |
33ee8297 AD |
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; | |
ab767201 AD |
165 | u32 vyres = GETVYRES(ops->p->scrollmode, info); |
166 | u32 vxres = GETVXRES(ops->p->scrollmode, info); | |
33ee8297 AD |
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); | |
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, ®ion); | |
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, ®ion); | |
249 | } | |
250 | } | |
251 | ||
252 | static void ud_cursor(struct vc_data *vc, struct fb_info *info, | |
253 | struct display *p, int mode, int softback_lines, | |
254 | int fg, int bg) | |
255 | { | |
256 | struct fb_cursor cursor; | |
257 | struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par; | |
258 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; | |
259 | int w = (vc->vc_font.width + 7) >> 3, c; | |
260 | int y = real_y(p, vc->vc_y); | |
261 | int attribute, use_sw = (vc->vc_cursor_type & 0x10); | |
262 | int err = 1, dx, dy; | |
263 | char *src; | |
264 | u32 vyres = GETVYRES(p->scrollmode, info); | |
265 | u32 vxres = GETVXRES(p->scrollmode, info); | |
266 | ||
267 | if (!ops->fontbuffer) | |
268 | return; | |
269 | ||
270 | cursor.set = 0; | |
271 | ||
272 | if (softback_lines) { | |
273 | if (y + softback_lines >= vc->vc_rows) { | |
274 | mode = CM_ERASE; | |
275 | ops->cursor_flash = 0; | |
276 | return; | |
277 | } else | |
278 | y += softback_lines; | |
279 | } | |
280 | ||
281 | c = scr_readw((u16 *) vc->vc_pos); | |
282 | attribute = get_attribute(info, c); | |
283 | src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height)); | |
284 | ||
285 | if (ops->cursor_state.image.data != src || | |
286 | ops->cursor_reset) { | |
287 | ops->cursor_state.image.data = src; | |
288 | cursor.set |= FB_CUR_SETIMAGE; | |
289 | } | |
290 | ||
291 | if (attribute) { | |
292 | u8 *dst; | |
293 | ||
294 | dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC); | |
295 | if (!dst) | |
296 | return; | |
297 | kfree(ops->cursor_data); | |
298 | ops->cursor_data = dst; | |
299 | ud_update_attr(dst, src, attribute, vc); | |
300 | src = dst; | |
301 | } | |
302 | ||
303 | if (ops->cursor_state.image.fg_color != fg || | |
304 | ops->cursor_state.image.bg_color != bg || | |
305 | ops->cursor_reset) { | |
306 | ops->cursor_state.image.fg_color = fg; | |
307 | ops->cursor_state.image.bg_color = bg; | |
308 | cursor.set |= FB_CUR_SETCMAP; | |
309 | } | |
310 | ||
311 | if (ops->cursor_state.image.height != vc->vc_font.height || | |
312 | ops->cursor_state.image.width != vc->vc_font.width || | |
313 | ops->cursor_reset) { | |
314 | ops->cursor_state.image.height = vc->vc_font.height; | |
315 | ops->cursor_state.image.width = vc->vc_font.width; | |
316 | cursor.set |= FB_CUR_SETSIZE; | |
317 | } | |
318 | ||
319 | dy = vyres - ((y * vc->vc_font.height) + vc->vc_font.height); | |
320 | dx = vxres - ((vc->vc_x * vc->vc_font.width) + vc->vc_font.width); | |
321 | ||
322 | if (ops->cursor_state.image.dx != dx || | |
323 | ops->cursor_state.image.dy != dy || | |
324 | ops->cursor_reset) { | |
325 | ops->cursor_state.image.dx = dx; | |
326 | ops->cursor_state.image.dy = dy; | |
327 | cursor.set |= FB_CUR_SETPOS; | |
328 | } | |
329 | ||
330 | if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || | |
331 | ops->cursor_reset) { | |
332 | ops->cursor_state.hot.x = cursor.hot.y = 0; | |
333 | cursor.set |= FB_CUR_SETHOT; | |
334 | } | |
335 | ||
336 | if (cursor.set & FB_CUR_SETSIZE || | |
337 | vc->vc_cursor_type != p->cursor_shape || | |
338 | ops->cursor_state.mask == NULL || | |
339 | ops->cursor_reset) { | |
340 | char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC); | |
341 | int cur_height, size, i = 0; | |
342 | u8 msk = 0xff; | |
343 | ||
344 | if (!mask) | |
345 | return; | |
346 | ||
347 | kfree(ops->cursor_state.mask); | |
348 | ops->cursor_state.mask = mask; | |
349 | ||
350 | p->cursor_shape = vc->vc_cursor_type; | |
351 | cursor.set |= FB_CUR_SETSHAPE; | |
352 | ||
353 | switch (p->cursor_shape & CUR_HWMASK) { | |
354 | case CUR_NONE: | |
355 | cur_height = 0; | |
356 | break; | |
357 | case CUR_UNDERLINE: | |
358 | cur_height = (vc->vc_font.height < 10) ? 1 : 2; | |
359 | break; | |
360 | case CUR_LOWER_THIRD: | |
361 | cur_height = vc->vc_font.height/3; | |
362 | break; | |
363 | case CUR_LOWER_HALF: | |
364 | cur_height = vc->vc_font.height >> 1; | |
365 | break; | |
366 | case CUR_TWO_THIRDS: | |
367 | cur_height = (vc->vc_font.height << 1)/3; | |
368 | break; | |
369 | case CUR_BLOCK: | |
370 | default: | |
371 | cur_height = vc->vc_font.height; | |
372 | break; | |
373 | } | |
374 | ||
375 | size = cur_height * w; | |
376 | ||
377 | while (size--) | |
378 | mask[i++] = msk; | |
379 | ||
380 | size = (vc->vc_font.height - cur_height) * w; | |
381 | ||
382 | while (size--) | |
383 | mask[i++] = ~msk; | |
384 | } | |
385 | ||
386 | switch (mode) { | |
387 | case CM_ERASE: | |
388 | ops->cursor_state.enable = 0; | |
389 | break; | |
390 | case CM_DRAW: | |
391 | case CM_MOVE: | |
392 | default: | |
393 | ops->cursor_state.enable = (use_sw) ? 0 : 1; | |
394 | break; | |
395 | } | |
396 | ||
397 | cursor.image.data = src; | |
398 | cursor.image.fg_color = ops->cursor_state.image.fg_color; | |
399 | cursor.image.bg_color = ops->cursor_state.image.bg_color; | |
400 | cursor.image.dx = ops->cursor_state.image.dx; | |
401 | cursor.image.dy = ops->cursor_state.image.dy; | |
402 | cursor.image.height = ops->cursor_state.image.height; | |
403 | cursor.image.width = ops->cursor_state.image.width; | |
404 | cursor.hot.x = ops->cursor_state.hot.x; | |
405 | cursor.hot.y = ops->cursor_state.hot.y; | |
406 | cursor.mask = ops->cursor_state.mask; | |
407 | cursor.enable = ops->cursor_state.enable; | |
408 | cursor.image.depth = 1; | |
409 | cursor.rop = ROP_XOR; | |
410 | ||
411 | if (info->fbops->fb_cursor) | |
412 | err = info->fbops->fb_cursor(info, &cursor); | |
413 | ||
414 | if (err) | |
415 | soft_cursor(info, &cursor); | |
416 | ||
417 | ops->cursor_reset = 0; | |
418 | } | |
419 | ||
420 | int ud_update_start(struct fb_info *info) | |
421 | { | |
422 | struct fbcon_ops *ops = info->fbcon_par; | |
33ee8297 | 423 | u32 xoffset, yoffset; |
ab767201 AD |
424 | u32 vyres = GETVYRES(ops->p->scrollmode, info); |
425 | u32 vxres = GETVXRES(ops->p->scrollmode, info); | |
33ee8297 AD |
426 | int err; |
427 | ||
428 | xoffset = (vxres - info->var.xres) - ops->var.xoffset; | |
429 | yoffset = (vyres - info->var.yres) - ops->var.yoffset; | |
430 | ops->var.xoffset = xoffset; | |
431 | ops->var.yoffset = yoffset; | |
432 | err = fb_pan_display(info, &ops->var); | |
433 | ops->var.xoffset = info->var.xoffset; | |
434 | ops->var.yoffset = info->var.yoffset; | |
435 | ops->var.vmode = info->var.vmode; | |
436 | return err; | |
437 | } | |
438 | ||
439 | void fbcon_rotate_ud(struct fbcon_ops *ops) | |
440 | { | |
441 | ops->bmove = ud_bmove; | |
442 | ops->clear = ud_clear; | |
443 | ops->putcs = ud_putcs; | |
444 | ops->clear_margins = ud_clear_margins; | |
445 | ops->cursor = ud_cursor; | |
446 | ops->update_start = ud_update_start; | |
447 | } | |
448 | EXPORT_SYMBOL(fbcon_rotate_ud); | |
449 | ||
450 | MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>"); | |
451 | MODULE_DESCRIPTION("Console Rotation (180 degrees) Support"); | |
452 | MODULE_LICENSE("GPL"); |