Commit | Line | Data |
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dbcbfe1e AD |
1 | /* |
2 | * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 90 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 | ||
dbcbfe1e | 11 | #include <linux/module.h> |
5a0e3ad6 | 12 | #include <linux/slab.h> |
dbcbfe1e AD |
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 90 degrees | |
23 | */ | |
24 | ||
26c5be3c | 25 | static void cw_update_attr(u8 *dst, u8 *src, int attribute, |
dbcbfe1e AD |
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; | |
6cd472d3 | 30 | u8 c, msk = ~(0xff >> offset); |
dbcbfe1e AD |
31 | |
32 | for (i = 0; i < vc->vc_font.width; i++) { | |
33 | for (j = 0; j < width; j++) { | |
34 | c = *src; | |
35 | if (attribute & FBCON_ATTRIBUTE_UNDERLINE && !j) | |
36 | c |= msk; | |
37 | if (attribute & FBCON_ATTRIBUTE_BOLD && i) | |
38 | c |= *(src-width); | |
39 | if (attribute & FBCON_ATTRIBUTE_REVERSE) | |
40 | c = ~c; | |
41 | src++; | |
42 | *dst++ = c; | |
dbcbfe1e AD |
43 | } |
44 | } | |
45 | } | |
46 | ||
47 | ||
48 | static void cw_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; |
dbcbfe1e | 52 | struct fb_copyarea area; |
ab767201 | 53 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
dbcbfe1e AD |
54 | |
55 | area.sx = vxres - ((sy + height) * vc->vc_font.height); | |
56 | area.sy = sx * vc->vc_font.width; | |
57 | area.dx = vxres - ((dy + height) * vc->vc_font.height); | |
58 | area.dy = dx * vc->vc_font.width; | |
59 | area.width = height * vc->vc_font.height; | |
60 | area.height = width * vc->vc_font.width; | |
61 | ||
62 | info->fbops->fb_copyarea(info, &area); | |
63 | } | |
64 | ||
65 | static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy, | |
66 | int sx, int height, int width) | |
67 | { | |
ab767201 | 68 | struct fbcon_ops *ops = info->fbcon_par; |
dbcbfe1e AD |
69 | struct fb_fillrect region; |
70 | int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; | |
ab767201 | 71 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
dbcbfe1e | 72 | |
91c43132 | 73 | region.color = attr_bgcol_ec(bgshift,vc,info); |
dbcbfe1e AD |
74 | region.dx = vxres - ((sy + height) * vc->vc_font.height); |
75 | region.dy = sx * vc->vc_font.width; | |
76 | region.height = width * vc->vc_font.width; | |
77 | region.width = height * vc->vc_font.height; | |
78 | region.rop = ROP_COPY; | |
79 | ||
80 | info->fbops->fb_fillrect(info, ®ion); | |
81 | } | |
82 | ||
83 | static inline void cw_putcs_aligned(struct vc_data *vc, struct fb_info *info, | |
84 | const u16 *s, u32 attr, u32 cnt, | |
85 | u32 d_pitch, u32 s_pitch, u32 cellsize, | |
86 | struct fb_image *image, u8 *buf, u8 *dst) | |
87 | { | |
88 | struct fbcon_ops *ops = info->fbcon_par; | |
89 | u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; | |
90 | u32 idx = (vc->vc_font.height + 7) >> 3; | |
91 | u8 *src; | |
92 | ||
93 | while (cnt--) { | |
94 | src = ops->fontbuffer + (scr_readw(s++) & charmask)*cellsize; | |
95 | ||
96 | if (attr) { | |
97 | cw_update_attr(buf, src, attr, vc); | |
98 | src = buf; | |
99 | } | |
100 | ||
101 | if (likely(idx == 1)) | |
102 | __fb_pad_aligned_buffer(dst, d_pitch, src, idx, | |
103 | vc->vc_font.width); | |
104 | else | |
105 | fb_pad_aligned_buffer(dst, d_pitch, src, idx, | |
106 | vc->vc_font.width); | |
107 | ||
108 | dst += d_pitch * vc->vc_font.width; | |
109 | } | |
110 | ||
111 | info->fbops->fb_imageblit(info, image); | |
112 | } | |
113 | ||
114 | static void cw_putcs(struct vc_data *vc, struct fb_info *info, | |
115 | const unsigned short *s, int count, int yy, int xx, | |
116 | int fg, int bg) | |
117 | { | |
118 | struct fb_image image; | |
dbcbfe1e AD |
119 | struct fbcon_ops *ops = info->fbcon_par; |
120 | u32 width = (vc->vc_font.height + 7)/8; | |
121 | u32 cellsize = width * vc->vc_font.width; | |
122 | u32 maxcnt = info->pixmap.size/cellsize; | |
123 | u32 scan_align = info->pixmap.scan_align - 1; | |
124 | u32 buf_align = info->pixmap.buf_align - 1; | |
125 | u32 cnt, pitch, size; | |
126 | u32 attribute = get_attribute(info, scr_readw(s)); | |
127 | u8 *dst, *buf = NULL; | |
ab767201 | 128 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
dbcbfe1e AD |
129 | |
130 | if (!ops->fontbuffer) | |
131 | return; | |
132 | ||
133 | image.fg_color = fg; | |
134 | image.bg_color = bg; | |
135 | image.dx = vxres - ((yy + 1) * vc->vc_font.height); | |
136 | image.dy = xx * vc->vc_font.width; | |
137 | image.width = vc->vc_font.height; | |
138 | image.depth = 1; | |
139 | ||
140 | if (attribute) { | |
141 | buf = kmalloc(cellsize, GFP_KERNEL); | |
142 | if (!buf) | |
143 | return; | |
144 | } | |
145 | ||
146 | while (count) { | |
147 | if (count > maxcnt) | |
148 | cnt = maxcnt; | |
149 | else | |
150 | cnt = count; | |
151 | ||
152 | image.height = vc->vc_font.width * cnt; | |
153 | pitch = ((image.width + 7) >> 3) + scan_align; | |
154 | pitch &= ~scan_align; | |
155 | size = pitch * image.height + buf_align; | |
156 | size &= ~buf_align; | |
157 | dst = fb_get_buffer_offset(info, &info->pixmap, size); | |
158 | image.data = dst; | |
159 | cw_putcs_aligned(vc, info, s, attribute, cnt, pitch, | |
160 | width, cellsize, &image, buf, dst); | |
161 | image.dy += image.height; | |
162 | count -= cnt; | |
163 | s += cnt; | |
164 | } | |
165 | ||
166 | /* buf is always NULL except when in monochrome mode, so in this case | |
167 | it's a gain to check buf against NULL even though kfree() handles | |
168 | NULL pointers just fine */ | |
169 | if (unlikely(buf)) | |
170 | kfree(buf); | |
171 | ||
172 | } | |
173 | ||
174 | static void cw_clear_margins(struct vc_data *vc, struct fb_info *info, | |
175 | int bottom_only) | |
176 | { | |
177 | unsigned int cw = vc->vc_font.width; | |
178 | unsigned int ch = vc->vc_font.height; | |
179 | unsigned int rw = info->var.yres - (vc->vc_cols*cw); | |
180 | unsigned int bh = info->var.xres - (vc->vc_rows*ch); | |
181 | unsigned int rs = info->var.yres - rw; | |
182 | struct fb_fillrect region; | |
dbcbfe1e | 183 | |
f74a289b | 184 | region.color = 0; |
dbcbfe1e AD |
185 | region.rop = ROP_COPY; |
186 | ||
187 | if (rw && !bottom_only) { | |
188 | region.dx = 0; | |
189 | region.dy = info->var.yoffset + rs; | |
190 | region.height = rw; | |
191 | region.width = info->var.xres_virtual; | |
192 | info->fbops->fb_fillrect(info, ®ion); | |
193 | } | |
194 | ||
195 | if (bh) { | |
196 | region.dx = info->var.xoffset; | |
197 | region.dy = info->var.yoffset; | |
198 | region.height = info->var.yres; | |
199 | region.width = bh; | |
200 | info->fbops->fb_fillrect(info, ®ion); | |
201 | } | |
202 | } | |
203 | ||
b73deed3 AD |
204 | static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode, |
205 | int softback_lines, int fg, int bg) | |
dbcbfe1e AD |
206 | { |
207 | struct fb_cursor cursor; | |
b73deed3 | 208 | struct fbcon_ops *ops = info->fbcon_par; |
dbcbfe1e AD |
209 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
210 | int w = (vc->vc_font.height + 7) >> 3, c; | |
b73deed3 | 211 | int y = real_y(ops->p, vc->vc_y); |
dbcbfe1e AD |
212 | int attribute, use_sw = (vc->vc_cursor_type & 0x10); |
213 | int err = 1, dx, dy; | |
214 | char *src; | |
b73deed3 | 215 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
dbcbfe1e AD |
216 | |
217 | if (!ops->fontbuffer) | |
218 | return; | |
219 | ||
220 | cursor.set = 0; | |
221 | ||
222 | if (softback_lines) { | |
223 | if (y + softback_lines >= vc->vc_rows) { | |
224 | mode = CM_ERASE; | |
225 | ops->cursor_flash = 0; | |
226 | return; | |
227 | } else | |
228 | y += softback_lines; | |
229 | } | |
230 | ||
231 | c = scr_readw((u16 *) vc->vc_pos); | |
232 | attribute = get_attribute(info, c); | |
233 | src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width)); | |
234 | ||
235 | if (ops->cursor_state.image.data != src || | |
236 | ops->cursor_reset) { | |
237 | ops->cursor_state.image.data = src; | |
238 | cursor.set |= FB_CUR_SETIMAGE; | |
239 | } | |
240 | ||
241 | if (attribute) { | |
242 | u8 *dst; | |
243 | ||
244 | dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC); | |
245 | if (!dst) | |
246 | return; | |
247 | kfree(ops->cursor_data); | |
248 | ops->cursor_data = dst; | |
249 | cw_update_attr(dst, src, attribute, vc); | |
250 | src = dst; | |
251 | } | |
252 | ||
253 | if (ops->cursor_state.image.fg_color != fg || | |
254 | ops->cursor_state.image.bg_color != bg || | |
255 | ops->cursor_reset) { | |
256 | ops->cursor_state.image.fg_color = fg; | |
257 | ops->cursor_state.image.bg_color = bg; | |
258 | cursor.set |= FB_CUR_SETCMAP; | |
259 | } | |
260 | ||
261 | if (ops->cursor_state.image.height != vc->vc_font.width || | |
262 | ops->cursor_state.image.width != vc->vc_font.height || | |
263 | ops->cursor_reset) { | |
264 | ops->cursor_state.image.height = vc->vc_font.width; | |
265 | ops->cursor_state.image.width = vc->vc_font.height; | |
266 | cursor.set |= FB_CUR_SETSIZE; | |
267 | } | |
268 | ||
269 | dx = vxres - ((y * vc->vc_font.height) + vc->vc_font.height); | |
270 | dy = vc->vc_x * vc->vc_font.width; | |
271 | ||
272 | if (ops->cursor_state.image.dx != dx || | |
273 | ops->cursor_state.image.dy != dy || | |
274 | ops->cursor_reset) { | |
275 | ops->cursor_state.image.dx = dx; | |
276 | ops->cursor_state.image.dy = dy; | |
277 | cursor.set |= FB_CUR_SETPOS; | |
278 | } | |
279 | ||
280 | if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || | |
281 | ops->cursor_reset) { | |
282 | ops->cursor_state.hot.x = cursor.hot.y = 0; | |
283 | cursor.set |= FB_CUR_SETHOT; | |
284 | } | |
285 | ||
286 | if (cursor.set & FB_CUR_SETSIZE || | |
b73deed3 | 287 | vc->vc_cursor_type != ops->p->cursor_shape || |
dbcbfe1e AD |
288 | ops->cursor_state.mask == NULL || |
289 | ops->cursor_reset) { | |
290 | char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC); | |
291 | int cur_height, size, i = 0; | |
292 | int width = (vc->vc_font.width + 7)/8; | |
293 | ||
294 | if (!mask) | |
295 | return; | |
296 | ||
297 | tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC); | |
298 | ||
299 | if (!tmp) { | |
300 | kfree(mask); | |
301 | return; | |
302 | } | |
303 | ||
304 | kfree(ops->cursor_state.mask); | |
305 | ops->cursor_state.mask = mask; | |
306 | ||
b73deed3 | 307 | ops->p->cursor_shape = vc->vc_cursor_type; |
dbcbfe1e AD |
308 | cursor.set |= FB_CUR_SETSHAPE; |
309 | ||
b73deed3 | 310 | switch (ops->p->cursor_shape & CUR_HWMASK) { |
dbcbfe1e AD |
311 | case CUR_NONE: |
312 | cur_height = 0; | |
313 | break; | |
314 | case CUR_UNDERLINE: | |
315 | cur_height = (vc->vc_font.height < 10) ? 1 : 2; | |
316 | break; | |
317 | case CUR_LOWER_THIRD: | |
318 | cur_height = vc->vc_font.height/3; | |
319 | break; | |
320 | case CUR_LOWER_HALF: | |
321 | cur_height = vc->vc_font.height >> 1; | |
322 | break; | |
323 | case CUR_TWO_THIRDS: | |
324 | cur_height = (vc->vc_font.height << 1)/3; | |
325 | break; | |
326 | case CUR_BLOCK: | |
327 | default: | |
328 | cur_height = vc->vc_font.height; | |
329 | break; | |
330 | } | |
331 | ||
332 | size = (vc->vc_font.height - cur_height) * width; | |
333 | while (size--) | |
334 | tmp[i++] = 0; | |
335 | size = cur_height * width; | |
336 | while (size--) | |
337 | tmp[i++] = 0xff; | |
338 | memset(mask, 0, w * vc->vc_font.width); | |
339 | rotate_cw(tmp, mask, vc->vc_font.width, vc->vc_font.height); | |
340 | kfree(tmp); | |
341 | } | |
342 | ||
343 | switch (mode) { | |
344 | case CM_ERASE: | |
345 | ops->cursor_state.enable = 0; | |
346 | break; | |
347 | case CM_DRAW: | |
348 | case CM_MOVE: | |
349 | default: | |
350 | ops->cursor_state.enable = (use_sw) ? 0 : 1; | |
351 | break; | |
352 | } | |
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); | |
373 | ||
374 | ops->cursor_reset = 0; | |
375 | } | |
376 | ||
48afdf6e | 377 | static int cw_update_start(struct fb_info *info) |
dbcbfe1e AD |
378 | { |
379 | struct fbcon_ops *ops = info->fbcon_par; | |
ab767201 | 380 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
dbcbfe1e AD |
381 | u32 xoffset; |
382 | int err; | |
383 | ||
384 | xoffset = vxres - (info->var.xres + ops->var.yoffset); | |
385 | ops->var.yoffset = ops->var.xoffset; | |
386 | ops->var.xoffset = xoffset; | |
387 | err = fb_pan_display(info, &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_cw(struct fbcon_ops *ops) | |
395 | { | |
396 | ops->bmove = cw_bmove; | |
397 | ops->clear = cw_clear; | |
398 | ops->putcs = cw_putcs; | |
399 | ops->clear_margins = cw_clear_margins; | |
400 | ops->cursor = cw_cursor; | |
401 | ops->update_start = cw_update_start; | |
402 | } | |
403 | EXPORT_SYMBOL(fbcon_rotate_cw); | |
404 | ||
405 | MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>"); | |
406 | MODULE_DESCRIPTION("Console Rotation (90 degrees) Support"); | |
407 | MODULE_LICENSE("GPL"); |