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, info); |
54 | u32 vxres = GETVXRES(ops->p, 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, info); |
73 | u32 vxres = GETVXRES(ops->p, 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, ®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(dst: buf, src, attribute: attr, vc); |
100 | src = buf; |
101 | } |
102 | |
103 | if (likely(idx == 1)) |
104 | __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch: idx, |
105 | height: image->height); |
106 | else |
107 | fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch: idx, |
108 | height: 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(dst: buf, src, attribute: attr, vc); |
135 | src = buf; |
136 | } |
137 | |
138 | fb_pad_unaligned_buffer(dst, d_pitch, src, idx, |
139 | height: 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, info); |
166 | u32 vxres = GETVXRES(ops->p, 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(size: 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, buf: &info->pixmap, size); |
198 | image.data = dst; |
199 | |
200 | if (!mod) |
201 | ud_putcs_aligned(vc, info, s, attr: attribute, cnt, d_pitch: pitch, |
202 | s_pitch: width, cellsize, image: &image, buf, dst); |
203 | else |
204 | ud_putcs_unaligned(vc, info, s, attr: attribute, cnt, d_pitch: pitch, |
205 | s_pitch: width, cellsize, image: &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(objp: buf); |
219 | |
220 | } |
221 | |
222 | static void ud_clear_margins(struct vc_data *vc, struct fb_info *info, |
223 | int color, 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 | |
231 | region.color = color; |
232 | region.rop = ROP_COPY; |
233 | |
234 | if ((int) rw > 0 && !bottom_only) { |
235 | region.dy = 0; |
236 | region.dx = info->var.xoffset; |
237 | region.width = rw; |
238 | region.height = info->var.yres_virtual; |
239 | info->fbops->fb_fillrect(info, ®ion); |
240 | } |
241 | |
242 | if ((int) bh > 0) { |
243 | region.dy = info->var.yoffset; |
244 | region.dx = info->var.xoffset; |
245 | region.height = bh; |
246 | region.width = info->var.xres; |
247 | info->fbops->fb_fillrect(info, ®ion); |
248 | } |
249 | } |
250 | |
251 | static void ud_cursor(struct vc_data *vc, struct fb_info *info, bool enable, |
252 | int fg, int bg) |
253 | { |
254 | struct fb_cursor cursor; |
255 | struct fbcon_ops *ops = info->fbcon_par; |
256 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
257 | int w = (vc->vc_font.width + 7) >> 3, c; |
258 | int y = real_y(p: ops->p, ypos: vc->state.y); |
259 | int attribute, use_sw = vc->vc_cursor_type & CUR_SW; |
260 | int err = 1, dx, dy; |
261 | char *src; |
262 | u32 vyres = GETVYRES(ops->p, info); |
263 | u32 vxres = GETVXRES(ops->p, info); |
264 | |
265 | if (!ops->fontbuffer) |
266 | return; |
267 | |
268 | cursor.set = 0; |
269 | |
270 | c = scr_readw((u16 *) vc->vc_pos); |
271 | attribute = get_attribute(info, c); |
272 | src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height)); |
273 | |
274 | if (ops->cursor_state.image.data != src || |
275 | ops->cursor_reset) { |
276 | ops->cursor_state.image.data = src; |
277 | cursor.set |= FB_CUR_SETIMAGE; |
278 | } |
279 | |
280 | if (attribute) { |
281 | u8 *dst; |
282 | |
283 | dst = kmalloc_array(n: w, size: vc->vc_font.height, GFP_ATOMIC); |
284 | if (!dst) |
285 | return; |
286 | kfree(objp: ops->cursor_data); |
287 | ops->cursor_data = dst; |
288 | ud_update_attr(dst, src, attribute, vc); |
289 | src = dst; |
290 | } |
291 | |
292 | if (ops->cursor_state.image.fg_color != fg || |
293 | ops->cursor_state.image.bg_color != bg || |
294 | ops->cursor_reset) { |
295 | ops->cursor_state.image.fg_color = fg; |
296 | ops->cursor_state.image.bg_color = bg; |
297 | cursor.set |= FB_CUR_SETCMAP; |
298 | } |
299 | |
300 | if (ops->cursor_state.image.height != vc->vc_font.height || |
301 | ops->cursor_state.image.width != vc->vc_font.width || |
302 | ops->cursor_reset) { |
303 | ops->cursor_state.image.height = vc->vc_font.height; |
304 | ops->cursor_state.image.width = vc->vc_font.width; |
305 | cursor.set |= FB_CUR_SETSIZE; |
306 | } |
307 | |
308 | dy = vyres - ((y * vc->vc_font.height) + vc->vc_font.height); |
309 | dx = vxres - ((vc->state.x * vc->vc_font.width) + vc->vc_font.width); |
310 | |
311 | if (ops->cursor_state.image.dx != dx || |
312 | ops->cursor_state.image.dy != dy || |
313 | ops->cursor_reset) { |
314 | ops->cursor_state.image.dx = dx; |
315 | ops->cursor_state.image.dy = dy; |
316 | cursor.set |= FB_CUR_SETPOS; |
317 | } |
318 | |
319 | if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || |
320 | ops->cursor_reset) { |
321 | ops->cursor_state.hot.x = cursor.hot.y = 0; |
322 | cursor.set |= FB_CUR_SETHOT; |
323 | } |
324 | |
325 | if (cursor.set & FB_CUR_SETSIZE || |
326 | vc->vc_cursor_type != ops->p->cursor_shape || |
327 | ops->cursor_state.mask == NULL || |
328 | ops->cursor_reset) { |
329 | char *mask = kmalloc_array(n: w, size: vc->vc_font.height, GFP_ATOMIC); |
330 | int cur_height, size, i = 0; |
331 | u8 msk = 0xff; |
332 | |
333 | if (!mask) |
334 | return; |
335 | |
336 | kfree(objp: ops->cursor_state.mask); |
337 | ops->cursor_state.mask = mask; |
338 | |
339 | ops->p->cursor_shape = vc->vc_cursor_type; |
340 | cursor.set |= FB_CUR_SETSHAPE; |
341 | |
342 | switch (CUR_SIZE(ops->p->cursor_shape)) { |
343 | case CUR_NONE: |
344 | cur_height = 0; |
345 | break; |
346 | case CUR_UNDERLINE: |
347 | cur_height = (vc->vc_font.height < 10) ? 1 : 2; |
348 | break; |
349 | case CUR_LOWER_THIRD: |
350 | cur_height = vc->vc_font.height/3; |
351 | break; |
352 | case CUR_LOWER_HALF: |
353 | cur_height = vc->vc_font.height >> 1; |
354 | break; |
355 | case CUR_TWO_THIRDS: |
356 | cur_height = (vc->vc_font.height << 1)/3; |
357 | break; |
358 | case CUR_BLOCK: |
359 | default: |
360 | cur_height = vc->vc_font.height; |
361 | break; |
362 | } |
363 | |
364 | size = cur_height * w; |
365 | |
366 | while (size--) |
367 | mask[i++] = msk; |
368 | |
369 | size = (vc->vc_font.height - cur_height) * w; |
370 | |
371 | while (size--) |
372 | mask[i++] = ~msk; |
373 | } |
374 | |
375 | ops->cursor_state.enable = enable && !use_sw; |
376 | |
377 | cursor.image.data = src; |
378 | cursor.image.fg_color = ops->cursor_state.image.fg_color; |
379 | cursor.image.bg_color = ops->cursor_state.image.bg_color; |
380 | cursor.image.dx = ops->cursor_state.image.dx; |
381 | cursor.image.dy = ops->cursor_state.image.dy; |
382 | cursor.image.height = ops->cursor_state.image.height; |
383 | cursor.image.width = ops->cursor_state.image.width; |
384 | cursor.hot.x = ops->cursor_state.hot.x; |
385 | cursor.hot.y = ops->cursor_state.hot.y; |
386 | cursor.mask = ops->cursor_state.mask; |
387 | cursor.enable = ops->cursor_state.enable; |
388 | cursor.image.depth = 1; |
389 | cursor.rop = ROP_XOR; |
390 | |
391 | if (info->fbops->fb_cursor) |
392 | err = info->fbops->fb_cursor(info, &cursor); |
393 | |
394 | if (err) |
395 | soft_cursor(info, cursor: &cursor); |
396 | |
397 | ops->cursor_reset = 0; |
398 | } |
399 | |
400 | static int ud_update_start(struct fb_info *info) |
401 | { |
402 | struct fbcon_ops *ops = info->fbcon_par; |
403 | int xoffset, yoffset; |
404 | u32 vyres = GETVYRES(ops->p, info); |
405 | u32 vxres = GETVXRES(ops->p, info); |
406 | int err; |
407 | |
408 | xoffset = vxres - info->var.xres - ops->var.xoffset; |
409 | yoffset = vyres - info->var.yres - ops->var.yoffset; |
410 | if (yoffset < 0) |
411 | yoffset += vyres; |
412 | ops->var.xoffset = xoffset; |
413 | ops->var.yoffset = yoffset; |
414 | err = fb_pan_display(info, var: &ops->var); |
415 | ops->var.xoffset = info->var.xoffset; |
416 | ops->var.yoffset = info->var.yoffset; |
417 | ops->var.vmode = info->var.vmode; |
418 | return err; |
419 | } |
420 | |
421 | void fbcon_rotate_ud(struct fbcon_ops *ops) |
422 | { |
423 | ops->bmove = ud_bmove; |
424 | ops->clear = ud_clear; |
425 | ops->putcs = ud_putcs; |
426 | ops->clear_margins = ud_clear_margins; |
427 | ops->cursor = ud_cursor; |
428 | ops->update_start = ud_update_start; |
429 | } |
430 | |