1 | /* |
2 | * linux/drivers/video/console/fbcon_ccw.c -- Software Rotation - 270 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 270 degrees |
23 | */ |
24 | |
25 | static void ccw_update_attr(u8 *dst, u8 *src, int attribute, |
26 | struct vc_data *vc) |
27 | { |
28 | int i, j, offset = (vc->vc_font.height < 10) ? 1 : 2; |
29 | int width = (vc->vc_font.height + 7) >> 3; |
30 | int mod = vc->vc_font.height % 8; |
31 | u8 c, msk = ~(0xff << offset), msk1 = 0; |
32 | |
33 | if (mod) |
34 | msk <<= (8 - mod); |
35 | |
36 | if (offset > mod) |
37 | msk1 |= 0x01; |
38 | |
39 | for (i = 0; i < vc->vc_font.width; i++) { |
40 | for (j = 0; j < width; j++) { |
41 | c = *src; |
42 | |
43 | if (attribute & FBCON_ATTRIBUTE_UNDERLINE) { |
44 | if (j == width - 1) |
45 | c |= msk; |
46 | |
47 | if (msk1 && j == width - 2) |
48 | c |= msk1; |
49 | } |
50 | |
51 | if (attribute & FBCON_ATTRIBUTE_BOLD && i) |
52 | *(dst - width) |= c; |
53 | |
54 | if (attribute & FBCON_ATTRIBUTE_REVERSE) |
55 | c = ~c; |
56 | src++; |
57 | *dst++ = c; |
58 | } |
59 | } |
60 | } |
61 | |
62 | |
63 | static void ccw_bmove(struct vc_data *vc, struct fb_info *info, int sy, |
64 | int sx, int dy, int dx, int height, int width) |
65 | { |
66 | struct fbcon_ops *ops = info->fbcon_par; |
67 | struct fb_copyarea area; |
68 | u32 vyres = GETVYRES(ops->p, info); |
69 | |
70 | area.sx = sy * vc->vc_font.height; |
71 | area.sy = vyres - ((sx + width) * vc->vc_font.width); |
72 | area.dx = dy * vc->vc_font.height; |
73 | area.dy = vyres - ((dx + width) * vc->vc_font.width); |
74 | area.width = height * vc->vc_font.height; |
75 | area.height = width * vc->vc_font.width; |
76 | |
77 | info->fbops->fb_copyarea(info, &area); |
78 | } |
79 | |
80 | static void ccw_clear(struct vc_data *vc, struct fb_info *info, int sy, |
81 | int sx, int height, int width) |
82 | { |
83 | struct fbcon_ops *ops = info->fbcon_par; |
84 | struct fb_fillrect region; |
85 | int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; |
86 | u32 vyres = GETVYRES(ops->p, info); |
87 | |
88 | region.color = attr_bgcol_ec(bgshift,vc,info); |
89 | region.dx = sy * vc->vc_font.height; |
90 | region.dy = vyres - ((sx + width) * vc->vc_font.width); |
91 | region.height = width * vc->vc_font.width; |
92 | region.width = height * vc->vc_font.height; |
93 | region.rop = ROP_COPY; |
94 | |
95 | info->fbops->fb_fillrect(info, ®ion); |
96 | } |
97 | |
98 | static inline void ccw_putcs_aligned(struct vc_data *vc, struct fb_info *info, |
99 | const u16 *s, u32 attr, u32 cnt, |
100 | u32 d_pitch, u32 s_pitch, u32 cellsize, |
101 | struct fb_image *image, u8 *buf, u8 *dst) |
102 | { |
103 | struct fbcon_ops *ops = info->fbcon_par; |
104 | u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
105 | u32 idx = (vc->vc_font.height + 7) >> 3; |
106 | u8 *src; |
107 | |
108 | while (cnt--) { |
109 | src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize; |
110 | |
111 | if (attr) { |
112 | ccw_update_attr(dst: buf, src, attribute: attr, vc); |
113 | src = buf; |
114 | } |
115 | |
116 | if (likely(idx == 1)) |
117 | __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch: idx, |
118 | height: vc->vc_font.width); |
119 | else |
120 | fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch: idx, |
121 | height: vc->vc_font.width); |
122 | |
123 | dst += d_pitch * vc->vc_font.width; |
124 | } |
125 | |
126 | info->fbops->fb_imageblit(info, image); |
127 | } |
128 | |
129 | static void ccw_putcs(struct vc_data *vc, struct fb_info *info, |
130 | const unsigned short *s, int count, int yy, int xx, |
131 | int fg, int bg) |
132 | { |
133 | struct fb_image image; |
134 | struct fbcon_ops *ops = info->fbcon_par; |
135 | u32 width = (vc->vc_font.height + 7)/8; |
136 | u32 cellsize = width * vc->vc_font.width; |
137 | u32 maxcnt = info->pixmap.size/cellsize; |
138 | u32 scan_align = info->pixmap.scan_align - 1; |
139 | u32 buf_align = info->pixmap.buf_align - 1; |
140 | u32 cnt, pitch, size; |
141 | u32 attribute = get_attribute(info, scr_readw(s)); |
142 | u8 *dst, *buf = NULL; |
143 | u32 vyres = GETVYRES(ops->p, info); |
144 | |
145 | if (!ops->fontbuffer) |
146 | return; |
147 | |
148 | image.fg_color = fg; |
149 | image.bg_color = bg; |
150 | image.dx = yy * vc->vc_font.height; |
151 | image.dy = vyres - ((xx + count) * vc->vc_font.width); |
152 | image.width = vc->vc_font.height; |
153 | image.depth = 1; |
154 | |
155 | if (attribute) { |
156 | buf = kmalloc(size: cellsize, GFP_KERNEL); |
157 | if (!buf) |
158 | return; |
159 | } |
160 | |
161 | s += count - 1; |
162 | |
163 | while (count) { |
164 | if (count > maxcnt) |
165 | cnt = maxcnt; |
166 | else |
167 | cnt = count; |
168 | |
169 | image.height = vc->vc_font.width * cnt; |
170 | pitch = ((image.width + 7) >> 3) + scan_align; |
171 | pitch &= ~scan_align; |
172 | size = pitch * image.height + buf_align; |
173 | size &= ~buf_align; |
174 | dst = fb_get_buffer_offset(info, buf: &info->pixmap, size); |
175 | image.data = dst; |
176 | ccw_putcs_aligned(vc, info, s, attr: attribute, cnt, d_pitch: pitch, |
177 | s_pitch: width, cellsize, image: &image, buf, dst); |
178 | image.dy += image.height; |
179 | count -= cnt; |
180 | s -= cnt; |
181 | } |
182 | |
183 | /* buf is always NULL except when in monochrome mode, so in this case |
184 | it's a gain to check buf against NULL even though kfree() handles |
185 | NULL pointers just fine */ |
186 | if (unlikely(buf)) |
187 | kfree(objp: buf); |
188 | |
189 | } |
190 | |
191 | static void ccw_clear_margins(struct vc_data *vc, struct fb_info *info, |
192 | int color, int bottom_only) |
193 | { |
194 | unsigned int cw = vc->vc_font.width; |
195 | unsigned int ch = vc->vc_font.height; |
196 | unsigned int rw = info->var.yres - (vc->vc_cols*cw); |
197 | unsigned int bh = info->var.xres - (vc->vc_rows*ch); |
198 | unsigned int bs = vc->vc_rows*ch; |
199 | struct fb_fillrect region; |
200 | |
201 | region.color = color; |
202 | region.rop = ROP_COPY; |
203 | |
204 | if ((int) rw > 0 && !bottom_only) { |
205 | region.dx = 0; |
206 | region.dy = info->var.yoffset; |
207 | region.height = rw; |
208 | region.width = info->var.xres_virtual; |
209 | info->fbops->fb_fillrect(info, ®ion); |
210 | } |
211 | |
212 | if ((int) bh > 0) { |
213 | region.dx = info->var.xoffset + bs; |
214 | region.dy = 0; |
215 | region.height = info->var.yres_virtual; |
216 | region.width = bh; |
217 | info->fbops->fb_fillrect(info, ®ion); |
218 | } |
219 | } |
220 | |
221 | static void ccw_cursor(struct vc_data *vc, struct fb_info *info, bool enable, |
222 | int fg, int bg) |
223 | { |
224 | struct fb_cursor cursor; |
225 | struct fbcon_ops *ops = info->fbcon_par; |
226 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
227 | int w = (vc->vc_font.height + 7) >> 3, c; |
228 | int y = real_y(p: ops->p, ypos: vc->state.y); |
229 | int attribute, use_sw = vc->vc_cursor_type & CUR_SW; |
230 | int err = 1, dx, dy; |
231 | char *src; |
232 | u32 vyres = GETVYRES(ops->p, info); |
233 | |
234 | if (!ops->fontbuffer) |
235 | return; |
236 | |
237 | cursor.set = 0; |
238 | |
239 | c = scr_readw((u16 *) vc->vc_pos); |
240 | attribute = get_attribute(info, c); |
241 | src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width)); |
242 | |
243 | if (ops->cursor_state.image.data != src || |
244 | ops->cursor_reset) { |
245 | ops->cursor_state.image.data = src; |
246 | cursor.set |= FB_CUR_SETIMAGE; |
247 | } |
248 | |
249 | if (attribute) { |
250 | u8 *dst; |
251 | |
252 | dst = kmalloc_array(n: w, size: vc->vc_font.width, GFP_ATOMIC); |
253 | if (!dst) |
254 | return; |
255 | kfree(objp: ops->cursor_data); |
256 | ops->cursor_data = dst; |
257 | ccw_update_attr(dst, src, attribute, vc); |
258 | src = dst; |
259 | } |
260 | |
261 | if (ops->cursor_state.image.fg_color != fg || |
262 | ops->cursor_state.image.bg_color != bg || |
263 | ops->cursor_reset) { |
264 | ops->cursor_state.image.fg_color = fg; |
265 | ops->cursor_state.image.bg_color = bg; |
266 | cursor.set |= FB_CUR_SETCMAP; |
267 | } |
268 | |
269 | if (ops->cursor_state.image.height != vc->vc_font.width || |
270 | ops->cursor_state.image.width != vc->vc_font.height || |
271 | ops->cursor_reset) { |
272 | ops->cursor_state.image.height = vc->vc_font.width; |
273 | ops->cursor_state.image.width = vc->vc_font.height; |
274 | cursor.set |= FB_CUR_SETSIZE; |
275 | } |
276 | |
277 | dx = y * vc->vc_font.height; |
278 | dy = vyres - ((vc->state.x + 1) * vc->vc_font.width); |
279 | |
280 | if (ops->cursor_state.image.dx != dx || |
281 | ops->cursor_state.image.dy != dy || |
282 | ops->cursor_reset) { |
283 | ops->cursor_state.image.dx = dx; |
284 | ops->cursor_state.image.dy = dy; |
285 | cursor.set |= FB_CUR_SETPOS; |
286 | } |
287 | |
288 | if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || |
289 | ops->cursor_reset) { |
290 | ops->cursor_state.hot.x = cursor.hot.y = 0; |
291 | cursor.set |= FB_CUR_SETHOT; |
292 | } |
293 | |
294 | if (cursor.set & FB_CUR_SETSIZE || |
295 | vc->vc_cursor_type != ops->p->cursor_shape || |
296 | ops->cursor_state.mask == NULL || |
297 | ops->cursor_reset) { |
298 | char *tmp, *mask = kmalloc_array(n: w, size: vc->vc_font.width, |
299 | GFP_ATOMIC); |
300 | int cur_height, size, i = 0; |
301 | int width = (vc->vc_font.width + 7)/8; |
302 | |
303 | if (!mask) |
304 | return; |
305 | |
306 | tmp = kmalloc_array(n: width, size: vc->vc_font.height, GFP_ATOMIC); |
307 | |
308 | if (!tmp) { |
309 | kfree(objp: mask); |
310 | return; |
311 | } |
312 | |
313 | kfree(objp: ops->cursor_state.mask); |
314 | ops->cursor_state.mask = mask; |
315 | |
316 | ops->p->cursor_shape = vc->vc_cursor_type; |
317 | cursor.set |= FB_CUR_SETSHAPE; |
318 | |
319 | switch (CUR_SIZE(ops->p->cursor_shape)) { |
320 | case CUR_NONE: |
321 | cur_height = 0; |
322 | break; |
323 | case CUR_UNDERLINE: |
324 | cur_height = (vc->vc_font.height < 10) ? 1 : 2; |
325 | break; |
326 | case CUR_LOWER_THIRD: |
327 | cur_height = vc->vc_font.height/3; |
328 | break; |
329 | case CUR_LOWER_HALF: |
330 | cur_height = vc->vc_font.height >> 1; |
331 | break; |
332 | case CUR_TWO_THIRDS: |
333 | cur_height = (vc->vc_font.height << 1)/3; |
334 | break; |
335 | case CUR_BLOCK: |
336 | default: |
337 | cur_height = vc->vc_font.height; |
338 | break; |
339 | } |
340 | |
341 | size = (vc->vc_font.height - cur_height) * width; |
342 | while (size--) |
343 | tmp[i++] = 0; |
344 | size = cur_height * width; |
345 | while (size--) |
346 | tmp[i++] = 0xff; |
347 | memset(mask, 0, w * vc->vc_font.width); |
348 | rotate_ccw(in: tmp, out: mask, width: vc->vc_font.width, height: vc->vc_font.height); |
349 | kfree(objp: tmp); |
350 | } |
351 | |
352 | ops->cursor_state.enable = enable && !use_sw; |
353 | |
354 | cursor.image.data = src; |
355 | cursor.image.fg_color = ops->cursor_state.image.fg_color; |
356 | cursor.image.bg_color = ops->cursor_state.image.bg_color; |
357 | cursor.image.dx = ops->cursor_state.image.dx; |
358 | cursor.image.dy = ops->cursor_state.image.dy; |
359 | cursor.image.height = ops->cursor_state.image.height; |
360 | cursor.image.width = ops->cursor_state.image.width; |
361 | cursor.hot.x = ops->cursor_state.hot.x; |
362 | cursor.hot.y = ops->cursor_state.hot.y; |
363 | cursor.mask = ops->cursor_state.mask; |
364 | cursor.enable = ops->cursor_state.enable; |
365 | cursor.image.depth = 1; |
366 | cursor.rop = ROP_XOR; |
367 | |
368 | if (info->fbops->fb_cursor) |
369 | err = info->fbops->fb_cursor(info, &cursor); |
370 | |
371 | if (err) |
372 | soft_cursor(info, cursor: &cursor); |
373 | |
374 | ops->cursor_reset = 0; |
375 | } |
376 | |
377 | static int ccw_update_start(struct fb_info *info) |
378 | { |
379 | struct fbcon_ops *ops = info->fbcon_par; |
380 | u32 yoffset; |
381 | u32 vyres = GETVYRES(ops->p, info); |
382 | int err; |
383 | |
384 | yoffset = (vyres - info->var.yres) - ops->var.xoffset; |
385 | ops->var.xoffset = ops->var.yoffset; |
386 | ops->var.yoffset = yoffset; |
387 | err = fb_pan_display(info, var: &ops->var); |
388 | ops->var.xoffset = info->var.xoffset; |
389 | ops->var.yoffset = info->var.yoffset; |
390 | ops->var.vmode = info->var.vmode; |
391 | return err; |
392 | } |
393 | |
394 | void fbcon_rotate_ccw(struct fbcon_ops *ops) |
395 | { |
396 | ops->bmove = ccw_bmove; |
397 | ops->clear = ccw_clear; |
398 | ops->putcs = ccw_putcs; |
399 | ops->clear_margins = ccw_clear_margins; |
400 | ops->cursor = ccw_cursor; |
401 | ops->update_start = ccw_update_start; |
402 | } |
403 | |