Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/fbmem.c | |
3 | * | |
4 | * Copyright (C) 1994 Martin Schaller | |
5 | * | |
6 | * 2001 - Documented with DocBook | |
7 | * - Brad Douglas <brad@neruo.com> | |
8 | * | |
9 | * This file is subject to the terms and conditions of the GNU General Public | |
10 | * License. See the file COPYING in the main directory of this archive | |
11 | * for more details. | |
12 | */ | |
13 | ||
1da177e4 LT |
14 | #include <linux/module.h> |
15 | ||
c7f82d9c | 16 | #include <linux/compat.h> |
1da177e4 LT |
17 | #include <linux/types.h> |
18 | #include <linux/errno.h> | |
1da177e4 LT |
19 | #include <linux/smp_lock.h> |
20 | #include <linux/kernel.h> | |
21 | #include <linux/major.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/mman.h> | |
a8f340e3 | 25 | #include <linux/vt.h> |
1da177e4 LT |
26 | #include <linux/init.h> |
27 | #include <linux/linux_logo.h> | |
28 | #include <linux/proc_fs.h> | |
29 | #include <linux/console.h> | |
30 | #ifdef CONFIG_KMOD | |
31 | #include <linux/kmod.h> | |
32 | #endif | |
1da177e4 | 33 | #include <linux/err.h> |
1da177e4 LT |
34 | #include <linux/device.h> |
35 | #include <linux/efi.h> | |
10eb2659 | 36 | #include <linux/fb.h> |
1da177e4 | 37 | |
10eb2659 | 38 | #include <asm/fb.h> |
1da177e4 | 39 | |
1da177e4 LT |
40 | |
41 | /* | |
42 | * Frame buffer device initialization and setup routines | |
43 | */ | |
44 | ||
45 | #define FBPIXMAPSIZE (1024 * 8) | |
46 | ||
0128beee HD |
47 | struct fb_info *registered_fb[FB_MAX] __read_mostly; |
48 | int num_registered_fb __read_mostly; | |
1da177e4 LT |
49 | |
50 | /* | |
51 | * Helpers | |
52 | */ | |
53 | ||
b8c90945 AD |
54 | int fb_get_color_depth(struct fb_var_screeninfo *var, |
55 | struct fb_fix_screeninfo *fix) | |
1da177e4 | 56 | { |
b8c90945 AD |
57 | int depth = 0; |
58 | ||
59 | if (fix->visual == FB_VISUAL_MONO01 || | |
60 | fix->visual == FB_VISUAL_MONO10) | |
61 | depth = 1; | |
62 | else { | |
63 | if (var->green.length == var->blue.length && | |
64 | var->green.length == var->red.length && | |
65 | var->green.offset == var->blue.offset && | |
66 | var->green.offset == var->red.offset) | |
67 | depth = var->green.length; | |
68 | else | |
69 | depth = var->green.length + var->red.length + | |
70 | var->blue.length; | |
71 | } | |
72 | ||
73 | return depth; | |
1da177e4 LT |
74 | } |
75 | EXPORT_SYMBOL(fb_get_color_depth); | |
76 | ||
77 | /* | |
f5a9951c | 78 | * Data padding functions. |
1da177e4 | 79 | */ |
f1ab5dac | 80 | void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height) |
1da177e4 | 81 | { |
829e79b6 | 82 | __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, height); |
1da177e4 | 83 | } |
f1ab5dac | 84 | EXPORT_SYMBOL(fb_pad_aligned_buffer); |
1da177e4 | 85 | |
f1ab5dac JS |
86 | void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height, |
87 | u32 shift_high, u32 shift_low, u32 mod) | |
1da177e4 LT |
88 | { |
89 | u8 mask = (u8) (0xfff << shift_high), tmp; | |
90 | int i, j; | |
91 | ||
92 | for (i = height; i--; ) { | |
93 | for (j = 0; j < idx; j++) { | |
94 | tmp = dst[j]; | |
95 | tmp &= mask; | |
96 | tmp |= *src >> shift_low; | |
97 | dst[j] = tmp; | |
98 | tmp = *src << shift_high; | |
99 | dst[j+1] = tmp; | |
100 | src++; | |
101 | } | |
102 | tmp = dst[idx]; | |
103 | tmp &= mask; | |
104 | tmp |= *src >> shift_low; | |
105 | dst[idx] = tmp; | |
106 | if (shift_high < mod) { | |
107 | tmp = *src << shift_high; | |
108 | dst[idx+1] = tmp; | |
109 | } | |
110 | src++; | |
111 | dst += d_pitch; | |
112 | } | |
113 | } | |
f1ab5dac | 114 | EXPORT_SYMBOL(fb_pad_unaligned_buffer); |
1da177e4 LT |
115 | |
116 | /* | |
117 | * we need to lock this section since fb_cursor | |
118 | * may use fb_imageblit() | |
119 | */ | |
120 | char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size) | |
121 | { | |
122 | u32 align = buf->buf_align - 1, offset; | |
123 | char *addr = buf->addr; | |
124 | ||
125 | /* If IO mapped, we need to sync before access, no sharing of | |
126 | * the pixmap is done | |
127 | */ | |
128 | if (buf->flags & FB_PIXMAP_IO) { | |
129 | if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC)) | |
130 | info->fbops->fb_sync(info); | |
131 | return addr; | |
132 | } | |
133 | ||
134 | /* See if we fit in the remaining pixmap space */ | |
135 | offset = buf->offset + align; | |
136 | offset &= ~align; | |
137 | if (offset + size > buf->size) { | |
138 | /* We do not fit. In order to be able to re-use the buffer, | |
139 | * we must ensure no asynchronous DMA'ing or whatever operation | |
140 | * is in progress, we sync for that. | |
141 | */ | |
142 | if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC)) | |
143 | info->fbops->fb_sync(info); | |
144 | offset = 0; | |
145 | } | |
146 | buf->offset = offset + size; | |
147 | addr += offset; | |
148 | ||
149 | return addr; | |
150 | } | |
151 | ||
152 | #ifdef CONFIG_LOGO | |
1da177e4 LT |
153 | |
154 | static inline unsigned safe_shift(unsigned d, int n) | |
155 | { | |
156 | return n < 0 ? d >> -n : d << n; | |
157 | } | |
158 | ||
159 | static void fb_set_logocmap(struct fb_info *info, | |
160 | const struct linux_logo *logo) | |
161 | { | |
162 | struct fb_cmap palette_cmap; | |
163 | u16 palette_green[16]; | |
164 | u16 palette_blue[16]; | |
165 | u16 palette_red[16]; | |
166 | int i, j, n; | |
167 | const unsigned char *clut = logo->clut; | |
168 | ||
169 | palette_cmap.start = 0; | |
170 | palette_cmap.len = 16; | |
171 | palette_cmap.red = palette_red; | |
172 | palette_cmap.green = palette_green; | |
173 | palette_cmap.blue = palette_blue; | |
174 | palette_cmap.transp = NULL; | |
175 | ||
176 | for (i = 0; i < logo->clutsize; i += n) { | |
177 | n = logo->clutsize - i; | |
178 | /* palette_cmap provides space for only 16 colors at once */ | |
179 | if (n > 16) | |
180 | n = 16; | |
181 | palette_cmap.start = 32 + i; | |
182 | palette_cmap.len = n; | |
183 | for (j = 0; j < n; ++j) { | |
184 | palette_cmap.red[j] = clut[0] << 8 | clut[0]; | |
185 | palette_cmap.green[j] = clut[1] << 8 | clut[1]; | |
186 | palette_cmap.blue[j] = clut[2] << 8 | clut[2]; | |
187 | clut += 3; | |
188 | } | |
189 | fb_set_cmap(&palette_cmap, info); | |
190 | } | |
191 | } | |
192 | ||
193 | static void fb_set_logo_truepalette(struct fb_info *info, | |
194 | const struct linux_logo *logo, | |
195 | u32 *palette) | |
196 | { | |
0128beee | 197 | static const unsigned char mask[] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff }; |
1da177e4 LT |
198 | unsigned char redmask, greenmask, bluemask; |
199 | int redshift, greenshift, blueshift; | |
200 | int i; | |
201 | const unsigned char *clut = logo->clut; | |
202 | ||
203 | /* | |
204 | * We have to create a temporary palette since console palette is only | |
205 | * 16 colors long. | |
206 | */ | |
207 | /* Bug: Doesn't obey msb_right ... (who needs that?) */ | |
208 | redmask = mask[info->var.red.length < 8 ? info->var.red.length : 8]; | |
209 | greenmask = mask[info->var.green.length < 8 ? info->var.green.length : 8]; | |
210 | bluemask = mask[info->var.blue.length < 8 ? info->var.blue.length : 8]; | |
211 | redshift = info->var.red.offset - (8 - info->var.red.length); | |
212 | greenshift = info->var.green.offset - (8 - info->var.green.length); | |
213 | blueshift = info->var.blue.offset - (8 - info->var.blue.length); | |
214 | ||
215 | for ( i = 0; i < logo->clutsize; i++) { | |
216 | palette[i+32] = (safe_shift((clut[0] & redmask), redshift) | | |
217 | safe_shift((clut[1] & greenmask), greenshift) | | |
218 | safe_shift((clut[2] & bluemask), blueshift)); | |
219 | clut += 3; | |
220 | } | |
221 | } | |
222 | ||
223 | static void fb_set_logo_directpalette(struct fb_info *info, | |
224 | const struct linux_logo *logo, | |
225 | u32 *palette) | |
226 | { | |
227 | int redshift, greenshift, blueshift; | |
228 | int i; | |
229 | ||
230 | redshift = info->var.red.offset; | |
231 | greenshift = info->var.green.offset; | |
232 | blueshift = info->var.blue.offset; | |
233 | ||
234 | for (i = 32; i < logo->clutsize; i++) | |
235 | palette[i] = i << redshift | i << greenshift | i << blueshift; | |
236 | } | |
237 | ||
238 | static void fb_set_logo(struct fb_info *info, | |
239 | const struct linux_logo *logo, u8 *dst, | |
240 | int depth) | |
241 | { | |
b8c90945 | 242 | int i, j, k; |
1da177e4 | 243 | const u8 *src = logo->data; |
b8c90945 AD |
244 | u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; |
245 | u8 fg = 1, d; | |
1da177e4 | 246 | |
1692b37c AD |
247 | switch (fb_get_color_depth(&info->var, &info->fix)) { |
248 | case 1: | |
249 | fg = 1; | |
250 | break; | |
251 | case 2: | |
252 | fg = 3; | |
253 | break; | |
254 | default: | |
1da177e4 | 255 | fg = 7; |
1692b37c AD |
256 | break; |
257 | } | |
1da177e4 | 258 | |
b8c90945 AD |
259 | if (info->fix.visual == FB_VISUAL_MONO01 || |
260 | info->fix.visual == FB_VISUAL_MONO10) | |
261 | fg = ~((u8) (0xfff << info->var.green.length)); | |
262 | ||
1da177e4 LT |
263 | switch (depth) { |
264 | case 4: | |
265 | for (i = 0; i < logo->height; i++) | |
266 | for (j = 0; j < logo->width; src++) { | |
267 | *dst++ = *src >> 4; | |
268 | j++; | |
269 | if (j < logo->width) { | |
270 | *dst++ = *src & 0x0f; | |
271 | j++; | |
272 | } | |
273 | } | |
274 | break; | |
275 | case 1: | |
276 | for (i = 0; i < logo->height; i++) { | |
277 | for (j = 0; j < logo->width; src++) { | |
278 | d = *src ^ xor; | |
279 | for (k = 7; k >= 0; k--) { | |
280 | *dst++ = ((d >> k) & 1) ? fg : 0; | |
281 | j++; | |
282 | } | |
283 | } | |
284 | } | |
285 | break; | |
286 | } | |
287 | } | |
288 | ||
289 | /* | |
290 | * Three (3) kinds of logo maps exist. linux_logo_clut224 (>16 colors), | |
291 | * linux_logo_vga16 (16 colors) and linux_logo_mono (2 colors). Depending on | |
292 | * the visual format and color depth of the framebuffer, the DAC, the | |
293 | * pseudo_palette, and the logo data will be adjusted accordingly. | |
294 | * | |
295 | * Case 1 - linux_logo_clut224: | |
296 | * Color exceeds the number of console colors (16), thus we set the hardware DAC | |
297 | * using fb_set_cmap() appropriately. The "needs_cmapreset" flag will be set. | |
298 | * | |
299 | * For visuals that require color info from the pseudo_palette, we also construct | |
300 | * one for temporary use. The "needs_directpalette" or "needs_truepalette" flags | |
301 | * will be set. | |
302 | * | |
303 | * Case 2 - linux_logo_vga16: | |
304 | * The number of colors just matches the console colors, thus there is no need | |
305 | * to set the DAC or the pseudo_palette. However, the bitmap is packed, ie, | |
306 | * each byte contains color information for two pixels (upper and lower nibble). | |
307 | * To be consistent with fb_imageblit() usage, we therefore separate the two | |
308 | * nibbles into separate bytes. The "depth" flag will be set to 4. | |
309 | * | |
310 | * Case 3 - linux_logo_mono: | |
311 | * This is similar with Case 2. Each byte contains information for 8 pixels. | |
312 | * We isolate each bit and expand each into a byte. The "depth" flag will | |
313 | * be set to 1. | |
314 | */ | |
315 | static struct logo_data { | |
316 | int depth; | |
317 | int needs_directpalette; | |
318 | int needs_truepalette; | |
319 | int needs_cmapreset; | |
320 | const struct linux_logo *logo; | |
0128beee | 321 | } fb_logo __read_mostly; |
1da177e4 | 322 | |
9c44e5f6 AD |
323 | static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height) |
324 | { | |
325 | u32 size = width * height, i; | |
326 | ||
327 | out += size - 1; | |
328 | ||
329 | for (i = size; i--; ) | |
330 | *out-- = *in++; | |
331 | } | |
332 | ||
333 | static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height) | |
334 | { | |
f837e6f7 | 335 | int i, j, h = height - 1; |
9c44e5f6 AD |
336 | |
337 | for (i = 0; i < height; i++) | |
338 | for (j = 0; j < width; j++) | |
f837e6f7 | 339 | out[height * j + h - i] = *in++; |
9c44e5f6 AD |
340 | } |
341 | ||
342 | static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height) | |
343 | { | |
344 | int i, j, w = width - 1; | |
345 | ||
346 | for (i = 0; i < height; i++) | |
347 | for (j = 0; j < width; j++) | |
348 | out[height * (w - j) + i] = *in++; | |
349 | } | |
350 | ||
351 | static void fb_rotate_logo(struct fb_info *info, u8 *dst, | |
352 | struct fb_image *image, int rotate) | |
353 | { | |
354 | u32 tmp; | |
355 | ||
356 | if (rotate == FB_ROTATE_UD) { | |
9c44e5f6 AD |
357 | fb_rotate_logo_ud(image->data, dst, image->width, |
358 | image->height); | |
abed5d15 GU |
359 | image->dx = info->var.xres - image->width - image->dx; |
360 | image->dy = info->var.yres - image->height - image->dy; | |
9c44e5f6 | 361 | } else if (rotate == FB_ROTATE_CW) { |
9c44e5f6 AD |
362 | fb_rotate_logo_cw(image->data, dst, image->width, |
363 | image->height); | |
9c44e5f6 AD |
364 | tmp = image->width; |
365 | image->width = image->height; | |
366 | image->height = tmp; | |
abed5d15 GU |
367 | tmp = image->dy; |
368 | image->dy = image->dx; | |
369 | image->dx = info->var.xres - image->width - tmp; | |
f837e6f7 | 370 | } else if (rotate == FB_ROTATE_CCW) { |
9c44e5f6 AD |
371 | fb_rotate_logo_ccw(image->data, dst, image->width, |
372 | image->height); | |
f837e6f7 AD |
373 | tmp = image->width; |
374 | image->width = image->height; | |
375 | image->height = tmp; | |
abed5d15 GU |
376 | tmp = image->dx; |
377 | image->dx = image->dy; | |
378 | image->dy = info->var.yres - image->height - tmp; | |
9c44e5f6 AD |
379 | } |
380 | ||
381 | image->data = dst; | |
382 | } | |
383 | ||
384 | static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, | |
448d4797 | 385 | int rotate, unsigned int num) |
9c44e5f6 | 386 | { |
448d4797 | 387 | unsigned int x; |
9c44e5f6 AD |
388 | |
389 | if (rotate == FB_ROTATE_UR) { | |
448d4797 GU |
390 | for (x = 0; |
391 | x < num && image->dx + image->width <= info->var.xres; | |
392 | x++) { | |
9c44e5f6 | 393 | info->fbops->fb_imageblit(info, image); |
448d4797 | 394 | image->dx += image->width + 8; |
9c44e5f6 AD |
395 | } |
396 | } else if (rotate == FB_ROTATE_UD) { | |
448d4797 | 397 | for (x = 0; x < num && image->dx >= 0; x++) { |
9c44e5f6 | 398 | info->fbops->fb_imageblit(info, image); |
448d4797 | 399 | image->dx -= image->width + 8; |
9c44e5f6 AD |
400 | } |
401 | } else if (rotate == FB_ROTATE_CW) { | |
448d4797 GU |
402 | for (x = 0; |
403 | x < num && image->dy + image->height <= info->var.yres; | |
404 | x++) { | |
9c44e5f6 | 405 | info->fbops->fb_imageblit(info, image); |
448d4797 | 406 | image->dy += image->height + 8; |
9c44e5f6 AD |
407 | } |
408 | } else if (rotate == FB_ROTATE_CCW) { | |
448d4797 | 409 | for (x = 0; x < num && image->dy >= 0; x++) { |
9c44e5f6 | 410 | info->fbops->fb_imageblit(info, image); |
448d4797 | 411 | image->dy -= image->height + 8; |
9c44e5f6 AD |
412 | } |
413 | } | |
414 | } | |
415 | ||
90da63e5 GU |
416 | static int fb_show_logo_line(struct fb_info *info, int rotate, |
417 | const struct linux_logo *logo, int y, | |
418 | unsigned int n) | |
1da177e4 LT |
419 | { |
420 | u32 *palette = NULL, *saved_pseudo_palette = NULL; | |
9c44e5f6 | 421 | unsigned char *logo_new = NULL, *logo_rotate = NULL; |
1da177e4 | 422 | struct fb_image image; |
1da177e4 LT |
423 | |
424 | /* Return if the frame buffer is not mapped or suspended */ | |
90da63e5 | 425 | if (logo == NULL || info->state != FBINFO_STATE_RUNNING || |
70802c60 | 426 | info->flags & FBINFO_MODULE) |
1da177e4 LT |
427 | return 0; |
428 | ||
429 | image.depth = 8; | |
90da63e5 | 430 | image.data = logo->data; |
1da177e4 LT |
431 | |
432 | if (fb_logo.needs_cmapreset) | |
90da63e5 | 433 | fb_set_logocmap(info, logo); |
1da177e4 | 434 | |
9900abfb | 435 | if (fb_logo.needs_truepalette || |
1da177e4 LT |
436 | fb_logo.needs_directpalette) { |
437 | palette = kmalloc(256 * 4, GFP_KERNEL); | |
438 | if (palette == NULL) | |
439 | return 0; | |
440 | ||
441 | if (fb_logo.needs_truepalette) | |
90da63e5 | 442 | fb_set_logo_truepalette(info, logo, palette); |
1da177e4 | 443 | else |
90da63e5 | 444 | fb_set_logo_directpalette(info, logo, palette); |
1da177e4 LT |
445 | |
446 | saved_pseudo_palette = info->pseudo_palette; | |
447 | info->pseudo_palette = palette; | |
448 | } | |
449 | ||
450 | if (fb_logo.depth <= 4) { | |
90da63e5 | 451 | logo_new = kmalloc(logo->width * logo->height, GFP_KERNEL); |
1da177e4 LT |
452 | if (logo_new == NULL) { |
453 | kfree(palette); | |
454 | if (saved_pseudo_palette) | |
455 | info->pseudo_palette = saved_pseudo_palette; | |
456 | return 0; | |
457 | } | |
458 | image.data = logo_new; | |
90da63e5 | 459 | fb_set_logo(info, logo, logo_new, fb_logo.depth); |
1da177e4 LT |
460 | } |
461 | ||
9c44e5f6 | 462 | image.dx = 0; |
90da63e5 GU |
463 | image.dy = y; |
464 | image.width = logo->width; | |
465 | image.height = logo->height; | |
1da177e4 | 466 | |
9c44e5f6 | 467 | if (rotate) { |
90da63e5 GU |
468 | logo_rotate = kmalloc(logo->width * |
469 | logo->height, GFP_KERNEL); | |
9c44e5f6 AD |
470 | if (logo_rotate) |
471 | fb_rotate_logo(info, logo_rotate, &image, rotate); | |
1da177e4 | 472 | } |
9c44e5f6 | 473 | |
90da63e5 | 474 | fb_do_show_logo(info, &image, rotate, n); |
9c44e5f6 | 475 | |
1da177e4 LT |
476 | kfree(palette); |
477 | if (saved_pseudo_palette != NULL) | |
478 | info->pseudo_palette = saved_pseudo_palette; | |
479 | kfree(logo_new); | |
9c44e5f6 | 480 | kfree(logo_rotate); |
90da63e5 GU |
481 | return logo->height; |
482 | } | |
483 | ||
9900abfb GU |
484 | |
485 | #ifdef CONFIG_FB_LOGO_EXTRA | |
486 | ||
487 | #define FB_LOGO_EX_NUM_MAX 10 | |
488 | static struct logo_data_extra { | |
489 | const struct linux_logo *logo; | |
490 | unsigned int n; | |
491 | } fb_logo_ex[FB_LOGO_EX_NUM_MAX]; | |
492 | static unsigned int fb_logo_ex_num; | |
493 | ||
494 | void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n) | |
495 | { | |
496 | if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX) | |
497 | return; | |
498 | ||
499 | fb_logo_ex[fb_logo_ex_num].logo = logo; | |
500 | fb_logo_ex[fb_logo_ex_num].n = n; | |
501 | fb_logo_ex_num++; | |
502 | } | |
503 | ||
504 | static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height, | |
505 | unsigned int yres) | |
506 | { | |
507 | unsigned int i; | |
508 | ||
509 | /* FIXME: logo_ex supports only truecolor fb. */ | |
510 | if (info->fix.visual != FB_VISUAL_TRUECOLOR) | |
511 | fb_logo_ex_num = 0; | |
512 | ||
513 | for (i = 0; i < fb_logo_ex_num; i++) { | |
514 | height += fb_logo_ex[i].logo->height; | |
515 | if (height > yres) { | |
516 | height -= fb_logo_ex[i].logo->height; | |
517 | fb_logo_ex_num = i; | |
518 | break; | |
519 | } | |
520 | } | |
521 | return height; | |
522 | } | |
523 | ||
524 | static int fb_show_extra_logos(struct fb_info *info, int y, int rotate) | |
525 | { | |
526 | unsigned int i; | |
527 | ||
528 | for (i = 0; i < fb_logo_ex_num; i++) | |
529 | y += fb_show_logo_line(info, rotate, | |
530 | fb_logo_ex[i].logo, y, fb_logo_ex[i].n); | |
531 | ||
532 | return y; | |
533 | } | |
534 | ||
535 | #else /* !CONFIG_FB_LOGO_EXTRA */ | |
536 | ||
537 | static inline int fb_prepare_extra_logos(struct fb_info *info, | |
538 | unsigned int height, | |
539 | unsigned int yres) | |
540 | { | |
541 | return height; | |
542 | } | |
543 | ||
544 | static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate) | |
545 | { | |
546 | return y; | |
547 | } | |
548 | ||
549 | #endif /* CONFIG_FB_LOGO_EXTRA */ | |
550 | ||
551 | ||
552 | int fb_prepare_logo(struct fb_info *info, int rotate) | |
553 | { | |
554 | int depth = fb_get_color_depth(&info->var, &info->fix); | |
555 | unsigned int yres; | |
556 | ||
557 | memset(&fb_logo, 0, sizeof(struct logo_data)); | |
558 | ||
559 | if (info->flags & FBINFO_MISC_TILEBLITTING || | |
560 | info->flags & FBINFO_MODULE) | |
561 | return 0; | |
562 | ||
563 | if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { | |
564 | depth = info->var.blue.length; | |
565 | if (info->var.red.length < depth) | |
566 | depth = info->var.red.length; | |
567 | if (info->var.green.length < depth) | |
568 | depth = info->var.green.length; | |
569 | } | |
570 | ||
571 | if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) { | |
572 | /* assume console colormap */ | |
573 | depth = 4; | |
574 | } | |
575 | ||
9900abfb GU |
576 | /* Return if no suitable logo was found */ |
577 | fb_logo.logo = fb_find_logo(depth); | |
578 | ||
579 | if (!fb_logo.logo) { | |
580 | return 0; | |
581 | } | |
582 | ||
583 | if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD) | |
584 | yres = info->var.yres; | |
585 | else | |
586 | yres = info->var.xres; | |
587 | ||
588 | if (fb_logo.logo->height > yres) { | |
589 | fb_logo.logo = NULL; | |
590 | return 0; | |
591 | } | |
592 | ||
593 | /* What depth we asked for might be different from what we get */ | |
594 | if (fb_logo.logo->type == LINUX_LOGO_CLUT224) | |
595 | fb_logo.depth = 8; | |
596 | else if (fb_logo.logo->type == LINUX_LOGO_VGA16) | |
597 | fb_logo.depth = 4; | |
598 | else | |
599 | fb_logo.depth = 1; | |
600 | ||
1692b37c AD |
601 | |
602 | if (fb_logo.depth > 4 && depth > 4) { | |
603 | switch (info->fix.visual) { | |
604 | case FB_VISUAL_TRUECOLOR: | |
605 | fb_logo.needs_truepalette = 1; | |
606 | break; | |
607 | case FB_VISUAL_DIRECTCOLOR: | |
608 | fb_logo.needs_directpalette = 1; | |
609 | fb_logo.needs_cmapreset = 1; | |
610 | break; | |
611 | case FB_VISUAL_PSEUDOCOLOR: | |
612 | fb_logo.needs_cmapreset = 1; | |
613 | break; | |
614 | } | |
615 | } | |
616 | ||
9900abfb GU |
617 | return fb_prepare_extra_logos(info, fb_logo.logo->height, yres); |
618 | } | |
619 | ||
90da63e5 GU |
620 | int fb_show_logo(struct fb_info *info, int rotate) |
621 | { | |
9900abfb GU |
622 | int y; |
623 | ||
624 | y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, | |
625 | num_online_cpus()); | |
626 | y = fb_show_extra_logos(info, y, rotate); | |
627 | ||
628 | return y; | |
1da177e4 LT |
629 | } |
630 | #else | |
9c44e5f6 AD |
631 | int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; } |
632 | int fb_show_logo(struct fb_info *info, int rotate) { return 0; } | |
1da177e4 LT |
633 | #endif /* CONFIG_LOGO */ |
634 | ||
635 | static int fbmem_read_proc(char *buf, char **start, off_t offset, | |
636 | int len, int *eof, void *private) | |
637 | { | |
638 | struct fb_info **fi; | |
639 | int clen; | |
640 | ||
641 | clen = 0; | |
a09fd48f GU |
642 | for (fi = registered_fb; fi < ®istered_fb[FB_MAX] && clen < 4000; |
643 | fi++) | |
1da177e4 LT |
644 | if (*fi) |
645 | clen += sprintf(buf + clen, "%d %s\n", | |
646 | (*fi)->node, | |
647 | (*fi)->fix.id); | |
648 | *start = buf + offset; | |
649 | if (clen > offset) | |
650 | clen -= offset; | |
651 | else | |
652 | clen = 0; | |
653 | return clen < len ? clen : len; | |
654 | } | |
655 | ||
656 | static ssize_t | |
657 | fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
658 | { | |
659 | unsigned long p = *ppos; | |
ad9a824e | 660 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
661 | int fbidx = iminor(inode); |
662 | struct fb_info *info = registered_fb[fbidx]; | |
663 | u32 *buffer, *dst; | |
664 | u32 __iomem *src; | |
665 | int c, i, cnt = 0, err = 0; | |
666 | unsigned long total_size; | |
667 | ||
668 | if (!info || ! info->screen_base) | |
669 | return -ENODEV; | |
670 | ||
671 | if (info->state != FBINFO_STATE_RUNNING) | |
672 | return -EPERM; | |
673 | ||
674 | if (info->fbops->fb_read) | |
3f9b0880 | 675 | return info->fbops->fb_read(info, buf, count, ppos); |
1da177e4 LT |
676 | |
677 | total_size = info->screen_size; | |
0a484a3a | 678 | |
1da177e4 LT |
679 | if (total_size == 0) |
680 | total_size = info->fix.smem_len; | |
681 | ||
682 | if (p >= total_size) | |
0a484a3a AD |
683 | return 0; |
684 | ||
1da177e4 | 685 | if (count >= total_size) |
0a484a3a AD |
686 | count = total_size; |
687 | ||
1da177e4 LT |
688 | if (count + p > total_size) |
689 | count = total_size - p; | |
690 | ||
1da177e4 LT |
691 | buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, |
692 | GFP_KERNEL); | |
693 | if (!buffer) | |
694 | return -ENOMEM; | |
695 | ||
696 | src = (u32 __iomem *) (info->screen_base + p); | |
697 | ||
698 | if (info->fbops->fb_sync) | |
699 | info->fbops->fb_sync(info); | |
700 | ||
701 | while (count) { | |
702 | c = (count > PAGE_SIZE) ? PAGE_SIZE : count; | |
703 | dst = buffer; | |
704 | for (i = c >> 2; i--; ) | |
705 | *dst++ = fb_readl(src++); | |
706 | if (c & 3) { | |
707 | u8 *dst8 = (u8 *) dst; | |
708 | u8 __iomem *src8 = (u8 __iomem *) src; | |
709 | ||
710 | for (i = c & 3; i--;) | |
711 | *dst8++ = fb_readb(src8++); | |
712 | ||
713 | src = (u32 __iomem *) src8; | |
714 | } | |
715 | ||
716 | if (copy_to_user(buf, buffer, c)) { | |
717 | err = -EFAULT; | |
718 | break; | |
719 | } | |
720 | *ppos += c; | |
721 | buf += c; | |
722 | cnt += c; | |
723 | count -= c; | |
724 | } | |
725 | ||
726 | kfree(buffer); | |
0a484a3a | 727 | |
1da177e4 LT |
728 | return (err) ? err : cnt; |
729 | } | |
730 | ||
731 | static ssize_t | |
732 | fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
733 | { | |
734 | unsigned long p = *ppos; | |
ad9a824e | 735 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
736 | int fbidx = iminor(inode); |
737 | struct fb_info *info = registered_fb[fbidx]; | |
738 | u32 *buffer, *src; | |
739 | u32 __iomem *dst; | |
0a484a3a | 740 | int c, i, cnt = 0, err = 0; |
1da177e4 LT |
741 | unsigned long total_size; |
742 | ||
743 | if (!info || !info->screen_base) | |
744 | return -ENODEV; | |
745 | ||
746 | if (info->state != FBINFO_STATE_RUNNING) | |
747 | return -EPERM; | |
748 | ||
749 | if (info->fbops->fb_write) | |
3f9b0880 | 750 | return info->fbops->fb_write(info, buf, count, ppos); |
1da177e4 LT |
751 | |
752 | total_size = info->screen_size; | |
0a484a3a | 753 | |
1da177e4 LT |
754 | if (total_size == 0) |
755 | total_size = info->fix.smem_len; | |
756 | ||
757 | if (p > total_size) | |
6a2a8866 | 758 | return -EFBIG; |
0a484a3a | 759 | |
6a2a8866 AD |
760 | if (count > total_size) { |
761 | err = -EFBIG; | |
0a484a3a | 762 | count = total_size; |
6a2a8866 AD |
763 | } |
764 | ||
765 | if (count + p > total_size) { | |
766 | if (!err) | |
767 | err = -ENOSPC; | |
0a484a3a | 768 | |
0a484a3a | 769 | count = total_size - p; |
6a2a8866 | 770 | } |
0a484a3a | 771 | |
1da177e4 LT |
772 | buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, |
773 | GFP_KERNEL); | |
774 | if (!buffer) | |
775 | return -ENOMEM; | |
776 | ||
777 | dst = (u32 __iomem *) (info->screen_base + p); | |
778 | ||
779 | if (info->fbops->fb_sync) | |
780 | info->fbops->fb_sync(info); | |
781 | ||
782 | while (count) { | |
783 | c = (count > PAGE_SIZE) ? PAGE_SIZE : count; | |
784 | src = buffer; | |
0a484a3a | 785 | |
1da177e4 LT |
786 | if (copy_from_user(src, buf, c)) { |
787 | err = -EFAULT; | |
788 | break; | |
789 | } | |
0a484a3a | 790 | |
1da177e4 LT |
791 | for (i = c >> 2; i--; ) |
792 | fb_writel(*src++, dst++); | |
0a484a3a | 793 | |
1da177e4 LT |
794 | if (c & 3) { |
795 | u8 *src8 = (u8 *) src; | |
796 | u8 __iomem *dst8 = (u8 __iomem *) dst; | |
797 | ||
798 | for (i = c & 3; i--; ) | |
799 | fb_writeb(*src8++, dst8++); | |
800 | ||
801 | dst = (u32 __iomem *) dst8; | |
802 | } | |
0a484a3a | 803 | |
1da177e4 LT |
804 | *ppos += c; |
805 | buf += c; | |
806 | cnt += c; | |
807 | count -= c; | |
808 | } | |
0a484a3a | 809 | |
1da177e4 LT |
810 | kfree(buffer); |
811 | ||
6a2a8866 | 812 | return (cnt) ? cnt : err; |
1da177e4 LT |
813 | } |
814 | ||
815 | #ifdef CONFIG_KMOD | |
816 | static void try_to_load(int fb) | |
817 | { | |
818 | request_module("fb%d", fb); | |
819 | } | |
820 | #endif /* CONFIG_KMOD */ | |
821 | ||
822 | int | |
823 | fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var) | |
824 | { | |
1207069f | 825 | struct fb_fix_screeninfo *fix = &info->fix; |
1da177e4 LT |
826 | int xoffset = var->xoffset; |
827 | int yoffset = var->yoffset; | |
1207069f AD |
828 | int err = 0, yres = info->var.yres; |
829 | ||
830 | if (var->yoffset > 0) { | |
831 | if (var->vmode & FB_VMODE_YWRAP) { | |
832 | if (!fix->ywrapstep || (var->yoffset % fix->ywrapstep)) | |
833 | err = -EINVAL; | |
834 | else | |
835 | yres = 0; | |
836 | } else if (!fix->ypanstep || (var->yoffset % fix->ypanstep)) | |
837 | err = -EINVAL; | |
838 | } | |
839 | ||
840 | if (var->xoffset > 0 && (!fix->xpanstep || | |
841 | (var->xoffset % fix->xpanstep))) | |
842 | err = -EINVAL; | |
843 | ||
844 | if (err || !info->fbops->fb_pan_display || xoffset < 0 || | |
845 | yoffset < 0 || var->yoffset + yres > info->var.yres_virtual || | |
846 | var->xoffset + info->var.xres > info->var.xres_virtual) | |
847 | return -EINVAL; | |
1da177e4 | 848 | |
1da177e4 LT |
849 | if ((err = info->fbops->fb_pan_display(var, info))) |
850 | return err; | |
851 | info->var.xoffset = var->xoffset; | |
852 | info->var.yoffset = var->yoffset; | |
853 | if (var->vmode & FB_VMODE_YWRAP) | |
854 | info->var.vmode |= FB_VMODE_YWRAP; | |
855 | else | |
856 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
857 | return 0; | |
858 | } | |
859 | ||
38a3dc51 AD |
860 | static int fb_check_caps(struct fb_info *info, struct fb_var_screeninfo *var, |
861 | u32 activate) | |
862 | { | |
863 | struct fb_event event; | |
864 | struct fb_blit_caps caps, fbcaps; | |
865 | int err = 0; | |
866 | ||
867 | memset(&caps, 0, sizeof(caps)); | |
868 | memset(&fbcaps, 0, sizeof(fbcaps)); | |
869 | caps.flags = (activate & FB_ACTIVATE_ALL) ? 1 : 0; | |
870 | event.info = info; | |
871 | event.data = ∩︀ | |
872 | fb_notifier_call_chain(FB_EVENT_GET_REQ, &event); | |
873 | info->fbops->fb_get_caps(info, &fbcaps, var); | |
874 | ||
875 | if (((fbcaps.x ^ caps.x) & caps.x) || | |
876 | ((fbcaps.y ^ caps.y) & caps.y) || | |
877 | (fbcaps.len < caps.len)) | |
878 | err = -EINVAL; | |
879 | ||
880 | return err; | |
881 | } | |
882 | ||
1da177e4 LT |
883 | int |
884 | fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) | |
885 | { | |
b1e7223f AD |
886 | int flags = info->flags; |
887 | int ret = 0; | |
1da177e4 LT |
888 | |
889 | if (var->activate & FB_ACTIVATE_INV_MODE) { | |
890 | struct fb_videomode mode1, mode2; | |
1da177e4 LT |
891 | |
892 | fb_var_to_videomode(&mode1, var); | |
893 | fb_var_to_videomode(&mode2, &info->var); | |
894 | /* make sure we don't delete the videomode of current var */ | |
895 | ret = fb_mode_is_equal(&mode1, &mode2); | |
896 | ||
897 | if (!ret) { | |
898 | struct fb_event event; | |
899 | ||
900 | event.info = info; | |
901 | event.data = &mode1; | |
256154fb | 902 | ret = fb_notifier_call_chain(FB_EVENT_MODE_DELETE, &event); |
1da177e4 LT |
903 | } |
904 | ||
905 | if (!ret) | |
906 | fb_delete_videomode(&mode1, &info->modelist); | |
907 | ||
b1e7223f AD |
908 | |
909 | ret = (ret) ? -EINVAL : 0; | |
910 | goto done; | |
1da177e4 LT |
911 | } |
912 | ||
913 | if ((var->activate & FB_ACTIVATE_FORCE) || | |
914 | memcmp(&info->var, var, sizeof(struct fb_var_screeninfo))) { | |
4941cb7a AD |
915 | u32 activate = var->activate; |
916 | ||
1da177e4 LT |
917 | if (!info->fbops->fb_check_var) { |
918 | *var = info->var; | |
b1e7223f | 919 | goto done; |
1da177e4 LT |
920 | } |
921 | ||
b1e7223f AD |
922 | ret = info->fbops->fb_check_var(var, info); |
923 | ||
924 | if (ret) | |
925 | goto done; | |
1da177e4 LT |
926 | |
927 | if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { | |
928 | struct fb_videomode mode; | |
1da177e4 | 929 | |
38a3dc51 | 930 | if (info->fbops->fb_get_caps) { |
b1e7223f | 931 | ret = fb_check_caps(info, var, activate); |
38a3dc51 | 932 | |
b1e7223f | 933 | if (ret) |
38a3dc51 AD |
934 | goto done; |
935 | } | |
936 | ||
1da177e4 | 937 | info->var = *var; |
38a3dc51 | 938 | |
1da177e4 LT |
939 | if (info->fbops->fb_set_par) |
940 | info->fbops->fb_set_par(info); | |
941 | ||
942 | fb_pan_display(info, &info->var); | |
1da177e4 | 943 | fb_set_cmap(&info->cmap, info); |
1da177e4 LT |
944 | fb_var_to_videomode(&mode, &info->var); |
945 | ||
946 | if (info->modelist.prev && info->modelist.next && | |
947 | !list_empty(&info->modelist)) | |
b1e7223f | 948 | ret = fb_add_videomode(&mode, &info->modelist); |
1da177e4 | 949 | |
b1e7223f | 950 | if (!ret && (flags & FBINFO_MISC_USEREVENT)) { |
1da177e4 | 951 | struct fb_event event; |
4941cb7a | 952 | int evnt = (activate & FB_ACTIVATE_ALL) ? |
7726e9e1 AD |
953 | FB_EVENT_MODE_CHANGE_ALL : |
954 | FB_EVENT_MODE_CHANGE; | |
1da177e4 LT |
955 | |
956 | info->flags &= ~FBINFO_MISC_USEREVENT; | |
957 | event.info = info; | |
256154fb | 958 | fb_notifier_call_chain(evnt, &event); |
1da177e4 LT |
959 | } |
960 | } | |
961 | } | |
38a3dc51 AD |
962 | |
963 | done: | |
b1e7223f | 964 | return ret; |
1da177e4 LT |
965 | } |
966 | ||
967 | int | |
968 | fb_blank(struct fb_info *info, int blank) | |
969 | { | |
970 | int ret = -EINVAL; | |
971 | ||
972 | if (blank > FB_BLANK_POWERDOWN) | |
973 | blank = FB_BLANK_POWERDOWN; | |
974 | ||
975 | if (info->fbops->fb_blank) | |
976 | ret = info->fbops->fb_blank(blank, info); | |
977 | ||
978 | if (!ret) { | |
979 | struct fb_event event; | |
980 | ||
981 | event.info = info; | |
982 | event.data = ␣ | |
256154fb | 983 | fb_notifier_call_chain(FB_EVENT_BLANK, &event); |
1da177e4 LT |
984 | } |
985 | ||
986 | return ret; | |
987 | } | |
988 | ||
989 | static int | |
990 | fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, | |
991 | unsigned long arg) | |
992 | { | |
993 | int fbidx = iminor(inode); | |
994 | struct fb_info *info = registered_fb[fbidx]; | |
995 | struct fb_ops *fb = info->fbops; | |
996 | struct fb_var_screeninfo var; | |
997 | struct fb_fix_screeninfo fix; | |
998 | struct fb_con2fbmap con2fb; | |
999 | struct fb_cmap_user cmap; | |
1000 | struct fb_event event; | |
1001 | void __user *argp = (void __user *)arg; | |
1002 | int i; | |
1003 | ||
1004 | if (!fb) | |
1005 | return -ENODEV; | |
1006 | switch (cmd) { | |
1007 | case FBIOGET_VSCREENINFO: | |
1008 | return copy_to_user(argp, &info->var, | |
1009 | sizeof(var)) ? -EFAULT : 0; | |
1010 | case FBIOPUT_VSCREENINFO: | |
1011 | if (copy_from_user(&var, argp, sizeof(var))) | |
1012 | return -EFAULT; | |
1013 | acquire_console_sem(); | |
1014 | info->flags |= FBINFO_MISC_USEREVENT; | |
1015 | i = fb_set_var(info, &var); | |
1016 | info->flags &= ~FBINFO_MISC_USEREVENT; | |
1017 | release_console_sem(); | |
1018 | if (i) return i; | |
1019 | if (copy_to_user(argp, &var, sizeof(var))) | |
1020 | return -EFAULT; | |
1021 | return 0; | |
1022 | case FBIOGET_FSCREENINFO: | |
1023 | return copy_to_user(argp, &info->fix, | |
1024 | sizeof(fix)) ? -EFAULT : 0; | |
1025 | case FBIOPUTCMAP: | |
1026 | if (copy_from_user(&cmap, argp, sizeof(cmap))) | |
1027 | return -EFAULT; | |
1028 | return (fb_set_user_cmap(&cmap, info)); | |
1029 | case FBIOGETCMAP: | |
1030 | if (copy_from_user(&cmap, argp, sizeof(cmap))) | |
1031 | return -EFAULT; | |
1032 | return fb_cmap_to_user(&info->cmap, &cmap); | |
1033 | case FBIOPAN_DISPLAY: | |
1034 | if (copy_from_user(&var, argp, sizeof(var))) | |
1035 | return -EFAULT; | |
1036 | acquire_console_sem(); | |
1037 | i = fb_pan_display(info, &var); | |
1038 | release_console_sem(); | |
1039 | if (i) | |
1040 | return i; | |
1041 | if (copy_to_user(argp, &var, sizeof(var))) | |
1042 | return -EFAULT; | |
1043 | return 0; | |
1044 | case FBIO_CURSOR: | |
1045 | return -EINVAL; | |
1046 | case FBIOGET_CON2FBMAP: | |
1047 | if (copy_from_user(&con2fb, argp, sizeof(con2fb))) | |
1048 | return -EFAULT; | |
1049 | if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) | |
1050 | return -EINVAL; | |
1051 | con2fb.framebuffer = -1; | |
1052 | event.info = info; | |
1053 | event.data = &con2fb; | |
256154fb | 1054 | fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event); |
1da177e4 LT |
1055 | return copy_to_user(argp, &con2fb, |
1056 | sizeof(con2fb)) ? -EFAULT : 0; | |
1057 | case FBIOPUT_CON2FBMAP: | |
1058 | if (copy_from_user(&con2fb, argp, sizeof(con2fb))) | |
1059 | return - EFAULT; | |
1060 | if (con2fb.console < 0 || con2fb.console > MAX_NR_CONSOLES) | |
1061 | return -EINVAL; | |
1062 | if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) | |
1063 | return -EINVAL; | |
1064 | #ifdef CONFIG_KMOD | |
1065 | if (!registered_fb[con2fb.framebuffer]) | |
1066 | try_to_load(con2fb.framebuffer); | |
1067 | #endif /* CONFIG_KMOD */ | |
1068 | if (!registered_fb[con2fb.framebuffer]) | |
1069 | return -EINVAL; | |
1070 | event.info = info; | |
1071 | event.data = &con2fb; | |
256154fb AD |
1072 | return fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, |
1073 | &event); | |
1da177e4 LT |
1074 | case FBIOBLANK: |
1075 | acquire_console_sem(); | |
1076 | info->flags |= FBINFO_MISC_USEREVENT; | |
1077 | i = fb_blank(info, arg); | |
1078 | info->flags &= ~FBINFO_MISC_USEREVENT; | |
1079 | release_console_sem(); | |
1080 | return i; | |
1081 | default: | |
1082 | if (fb->fb_ioctl == NULL) | |
1083 | return -EINVAL; | |
67a6680d | 1084 | return fb->fb_ioctl(info, cmd, arg); |
1da177e4 LT |
1085 | } |
1086 | } | |
1087 | ||
1088 | #ifdef CONFIG_COMPAT | |
c7f82d9c AB |
1089 | struct fb_fix_screeninfo32 { |
1090 | char id[16]; | |
1091 | compat_caddr_t smem_start; | |
1092 | u32 smem_len; | |
1093 | u32 type; | |
1094 | u32 type_aux; | |
1095 | u32 visual; | |
1096 | u16 xpanstep; | |
1097 | u16 ypanstep; | |
1098 | u16 ywrapstep; | |
1099 | u32 line_length; | |
1100 | compat_caddr_t mmio_start; | |
1101 | u32 mmio_len; | |
1102 | u32 accel; | |
1103 | u16 reserved[3]; | |
1104 | }; | |
1105 | ||
1106 | struct fb_cmap32 { | |
1107 | u32 start; | |
1108 | u32 len; | |
1109 | compat_caddr_t red; | |
1110 | compat_caddr_t green; | |
1111 | compat_caddr_t blue; | |
1112 | compat_caddr_t transp; | |
1113 | }; | |
1114 | ||
1115 | static int fb_getput_cmap(struct inode *inode, struct file *file, | |
1116 | unsigned int cmd, unsigned long arg) | |
1117 | { | |
1118 | struct fb_cmap_user __user *cmap; | |
1119 | struct fb_cmap32 __user *cmap32; | |
1120 | __u32 data; | |
1121 | int err; | |
1122 | ||
1123 | cmap = compat_alloc_user_space(sizeof(*cmap)); | |
1124 | cmap32 = compat_ptr(arg); | |
1125 | ||
1126 | if (copy_in_user(&cmap->start, &cmap32->start, 2 * sizeof(__u32))) | |
1127 | return -EFAULT; | |
1128 | ||
1129 | if (get_user(data, &cmap32->red) || | |
1130 | put_user(compat_ptr(data), &cmap->red) || | |
1131 | get_user(data, &cmap32->green) || | |
1132 | put_user(compat_ptr(data), &cmap->green) || | |
1133 | get_user(data, &cmap32->blue) || | |
1134 | put_user(compat_ptr(data), &cmap->blue) || | |
1135 | get_user(data, &cmap32->transp) || | |
1136 | put_user(compat_ptr(data), &cmap->transp)) | |
1137 | return -EFAULT; | |
1138 | ||
1139 | err = fb_ioctl(inode, file, cmd, (unsigned long) cmap); | |
1140 | ||
1141 | if (!err) { | |
1142 | if (copy_in_user(&cmap32->start, | |
1143 | &cmap->start, | |
1144 | 2 * sizeof(__u32))) | |
1145 | err = -EFAULT; | |
1146 | } | |
1147 | return err; | |
1148 | } | |
1149 | ||
1150 | static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix, | |
1151 | struct fb_fix_screeninfo32 __user *fix32) | |
1152 | { | |
1153 | __u32 data; | |
1154 | int err; | |
1155 | ||
1156 | err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id)); | |
1157 | ||
1158 | data = (__u32) (unsigned long) fix->smem_start; | |
1159 | err |= put_user(data, &fix32->smem_start); | |
1160 | ||
1161 | err |= put_user(fix->smem_len, &fix32->smem_len); | |
1162 | err |= put_user(fix->type, &fix32->type); | |
1163 | err |= put_user(fix->type_aux, &fix32->type_aux); | |
1164 | err |= put_user(fix->visual, &fix32->visual); | |
1165 | err |= put_user(fix->xpanstep, &fix32->xpanstep); | |
1166 | err |= put_user(fix->ypanstep, &fix32->ypanstep); | |
1167 | err |= put_user(fix->ywrapstep, &fix32->ywrapstep); | |
1168 | err |= put_user(fix->line_length, &fix32->line_length); | |
1169 | ||
1170 | data = (__u32) (unsigned long) fix->mmio_start; | |
1171 | err |= put_user(data, &fix32->mmio_start); | |
1172 | ||
1173 | err |= put_user(fix->mmio_len, &fix32->mmio_len); | |
1174 | err |= put_user(fix->accel, &fix32->accel); | |
1175 | err |= copy_to_user(fix32->reserved, fix->reserved, | |
1176 | sizeof(fix->reserved)); | |
1177 | ||
1178 | return err; | |
1179 | } | |
1180 | ||
1181 | static int fb_get_fscreeninfo(struct inode *inode, struct file *file, | |
1182 | unsigned int cmd, unsigned long arg) | |
1183 | { | |
1184 | mm_segment_t old_fs; | |
1185 | struct fb_fix_screeninfo fix; | |
1186 | struct fb_fix_screeninfo32 __user *fix32; | |
1187 | int err; | |
1188 | ||
1189 | fix32 = compat_ptr(arg); | |
1190 | ||
1191 | old_fs = get_fs(); | |
1192 | set_fs(KERNEL_DS); | |
1193 | err = fb_ioctl(inode, file, cmd, (unsigned long) &fix); | |
1194 | set_fs(old_fs); | |
1195 | ||
1196 | if (!err) | |
1197 | err = do_fscreeninfo_to_user(&fix, fix32); | |
1198 | ||
1199 | return err; | |
1200 | } | |
1201 | ||
1da177e4 LT |
1202 | static long |
1203 | fb_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1204 | { | |
ad9a824e | 1205 | struct inode *inode = file->f_path.dentry->d_inode; |
c7f82d9c | 1206 | int fbidx = iminor(inode); |
1da177e4 LT |
1207 | struct fb_info *info = registered_fb[fbidx]; |
1208 | struct fb_ops *fb = info->fbops; | |
c7f82d9c | 1209 | long ret = -ENOIOCTLCMD; |
1da177e4 | 1210 | |
1da177e4 | 1211 | lock_kernel(); |
c7f82d9c AB |
1212 | switch(cmd) { |
1213 | case FBIOGET_VSCREENINFO: | |
1214 | case FBIOPUT_VSCREENINFO: | |
1215 | case FBIOPAN_DISPLAY: | |
1216 | case FBIOGET_CON2FBMAP: | |
1217 | case FBIOPUT_CON2FBMAP: | |
1218 | arg = (unsigned long) compat_ptr(arg); | |
1219 | case FBIOBLANK: | |
1220 | ret = fb_ioctl(inode, file, cmd, arg); | |
1221 | break; | |
1222 | ||
1223 | case FBIOGET_FSCREENINFO: | |
1224 | ret = fb_get_fscreeninfo(inode, file, cmd, arg); | |
1225 | break; | |
1226 | ||
1227 | case FBIOGETCMAP: | |
1228 | case FBIOPUTCMAP: | |
1229 | ret = fb_getput_cmap(inode, file, cmd, arg); | |
1230 | break; | |
1231 | ||
1232 | default: | |
1233 | if (fb->fb_compat_ioctl) | |
67a6680d | 1234 | ret = fb->fb_compat_ioctl(info, cmd, arg); |
c7f82d9c AB |
1235 | break; |
1236 | } | |
1da177e4 LT |
1237 | unlock_kernel(); |
1238 | return ret; | |
1239 | } | |
1240 | #endif | |
1241 | ||
10eb2659 | 1242 | static int |
1da177e4 LT |
1243 | fb_mmap(struct file *file, struct vm_area_struct * vma) |
1244 | { | |
ad9a824e | 1245 | int fbidx = iminor(file->f_path.dentry->d_inode); |
1da177e4 LT |
1246 | struct fb_info *info = registered_fb[fbidx]; |
1247 | struct fb_ops *fb = info->fbops; | |
1248 | unsigned long off; | |
1da177e4 LT |
1249 | unsigned long start; |
1250 | u32 len; | |
1da177e4 LT |
1251 | |
1252 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) | |
1253 | return -EINVAL; | |
1254 | off = vma->vm_pgoff << PAGE_SHIFT; | |
1255 | if (!fb) | |
1256 | return -ENODEV; | |
1257 | if (fb->fb_mmap) { | |
1258 | int res; | |
1259 | lock_kernel(); | |
216d526c | 1260 | res = fb->fb_mmap(info, vma); |
1da177e4 LT |
1261 | unlock_kernel(); |
1262 | return res; | |
1263 | } | |
1264 | ||
1da177e4 LT |
1265 | lock_kernel(); |
1266 | ||
1267 | /* frame buffer memory */ | |
1268 | start = info->fix.smem_start; | |
1269 | len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.smem_len); | |
1270 | if (off >= len) { | |
1271 | /* memory mapped io */ | |
1272 | off -= len; | |
1273 | if (info->var.accel_flags) { | |
1274 | unlock_kernel(); | |
1275 | return -EINVAL; | |
1276 | } | |
1277 | start = info->fix.mmio_start; | |
1278 | len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len); | |
1279 | } | |
1280 | unlock_kernel(); | |
1281 | start &= PAGE_MASK; | |
1282 | if ((vma->vm_end - vma->vm_start + off) > len) | |
1283 | return -EINVAL; | |
1284 | off += start; | |
1285 | vma->vm_pgoff = off >> PAGE_SHIFT; | |
1286 | /* This is an IO map - tell maydump to skip this VMA */ | |
1287 | vma->vm_flags |= VM_IO | VM_RESERVED; | |
10eb2659 | 1288 | fb_pgprotect(file, vma, off); |
1da177e4 LT |
1289 | if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, |
1290 | vma->vm_end - vma->vm_start, vma->vm_page_prot)) | |
1291 | return -EAGAIN; | |
1da177e4 | 1292 | return 0; |
1da177e4 LT |
1293 | } |
1294 | ||
1295 | static int | |
1296 | fb_open(struct inode *inode, struct file *file) | |
1297 | { | |
1298 | int fbidx = iminor(inode); | |
1299 | struct fb_info *info; | |
1300 | int res = 0; | |
1301 | ||
1302 | if (fbidx >= FB_MAX) | |
1303 | return -ENODEV; | |
1304 | #ifdef CONFIG_KMOD | |
1305 | if (!(info = registered_fb[fbidx])) | |
1306 | try_to_load(fbidx); | |
1307 | #endif /* CONFIG_KMOD */ | |
1308 | if (!(info = registered_fb[fbidx])) | |
1309 | return -ENODEV; | |
1310 | if (!try_module_get(info->fbops->owner)) | |
1311 | return -ENODEV; | |
cae8a12f | 1312 | file->private_data = info; |
1da177e4 LT |
1313 | if (info->fbops->fb_open) { |
1314 | res = info->fbops->fb_open(info,1); | |
1315 | if (res) | |
1316 | module_put(info->fbops->owner); | |
1317 | } | |
1318 | return res; | |
1319 | } | |
1320 | ||
1321 | static int | |
1322 | fb_release(struct inode *inode, struct file *file) | |
1323 | { | |
cae8a12f | 1324 | struct fb_info * const info = file->private_data; |
1da177e4 LT |
1325 | |
1326 | lock_kernel(); | |
1da177e4 LT |
1327 | if (info->fbops->fb_release) |
1328 | info->fbops->fb_release(info,1); | |
1329 | module_put(info->fbops->owner); | |
1330 | unlock_kernel(); | |
1331 | return 0; | |
1332 | } | |
1333 | ||
0128beee | 1334 | static const struct file_operations fb_fops = { |
1da177e4 LT |
1335 | .owner = THIS_MODULE, |
1336 | .read = fb_read, | |
1337 | .write = fb_write, | |
1338 | .ioctl = fb_ioctl, | |
1339 | #ifdef CONFIG_COMPAT | |
1340 | .compat_ioctl = fb_compat_ioctl, | |
1341 | #endif | |
1342 | .mmap = fb_mmap, | |
1343 | .open = fb_open, | |
1344 | .release = fb_release, | |
1345 | #ifdef HAVE_ARCH_FB_UNMAPPED_AREA | |
1346 | .get_unmapped_area = get_fb_unmapped_area, | |
1347 | #endif | |
5e841b88 PM |
1348 | #ifdef CONFIG_FB_DEFERRED_IO |
1349 | .fsync = fb_deferred_io_fsync, | |
1350 | #endif | |
1da177e4 LT |
1351 | }; |
1352 | ||
9a179176 AD |
1353 | struct class *fb_class; |
1354 | EXPORT_SYMBOL(fb_class); | |
1da177e4 LT |
1355 | /** |
1356 | * register_framebuffer - registers a frame buffer device | |
1357 | * @fb_info: frame buffer info structure | |
1358 | * | |
1359 | * Registers a frame buffer device @fb_info. | |
1360 | * | |
1361 | * Returns negative errno on error, or zero for success. | |
1362 | * | |
1363 | */ | |
1364 | ||
1365 | int | |
1366 | register_framebuffer(struct fb_info *fb_info) | |
1367 | { | |
1368 | int i; | |
1369 | struct fb_event event; | |
96fe6a21 | 1370 | struct fb_videomode mode; |
1da177e4 LT |
1371 | |
1372 | if (num_registered_fb == FB_MAX) | |
1373 | return -ENXIO; | |
1374 | num_registered_fb++; | |
1375 | for (i = 0 ; i < FB_MAX; i++) | |
1376 | if (!registered_fb[i]) | |
1377 | break; | |
1378 | fb_info->node = i; | |
1379 | ||
78cde088 GKH |
1380 | fb_info->dev = device_create(fb_class, fb_info->device, |
1381 | MKDEV(FB_MAJOR, i), "fb%d", i); | |
1382 | if (IS_ERR(fb_info->dev)) { | |
1da177e4 | 1383 | /* Not fatal */ |
78cde088 GKH |
1384 | printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev)); |
1385 | fb_info->dev = NULL; | |
1da177e4 | 1386 | } else |
78cde088 | 1387 | fb_init_device(fb_info); |
1da177e4 LT |
1388 | |
1389 | if (fb_info->pixmap.addr == NULL) { | |
1390 | fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL); | |
1391 | if (fb_info->pixmap.addr) { | |
1392 | fb_info->pixmap.size = FBPIXMAPSIZE; | |
1393 | fb_info->pixmap.buf_align = 1; | |
1394 | fb_info->pixmap.scan_align = 1; | |
58a60643 | 1395 | fb_info->pixmap.access_align = 32; |
1da177e4 LT |
1396 | fb_info->pixmap.flags = FB_PIXMAP_DEFAULT; |
1397 | } | |
1398 | } | |
1399 | fb_info->pixmap.offset = 0; | |
1400 | ||
bf26ad72 AD |
1401 | if (!fb_info->pixmap.blit_x) |
1402 | fb_info->pixmap.blit_x = ~(u32)0; | |
1403 | ||
1404 | if (!fb_info->pixmap.blit_y) | |
1405 | fb_info->pixmap.blit_y = ~(u32)0; | |
1406 | ||
96fe6a21 | 1407 | if (!fb_info->modelist.prev || !fb_info->modelist.next) |
1da177e4 | 1408 | INIT_LIST_HEAD(&fb_info->modelist); |
1da177e4 | 1409 | |
96fe6a21 AD |
1410 | fb_var_to_videomode(&mode, &fb_info->var); |
1411 | fb_add_videomode(&mode, &fb_info->modelist); | |
1da177e4 LT |
1412 | registered_fb[i] = fb_info; |
1413 | ||
1da177e4 | 1414 | event.info = fb_info; |
256154fb | 1415 | fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event); |
1da177e4 LT |
1416 | return 0; |
1417 | } | |
1418 | ||
1419 | ||
1420 | /** | |
1421 | * unregister_framebuffer - releases a frame buffer device | |
1422 | * @fb_info: frame buffer info structure | |
1423 | * | |
1424 | * Unregisters a frame buffer device @fb_info. | |
1425 | * | |
1426 | * Returns negative errno on error, or zero for success. | |
1427 | * | |
cfafca80 JB |
1428 | * This function will also notify the framebuffer console |
1429 | * to release the driver. | |
1430 | * | |
1431 | * This is meant to be called within a driver's module_exit() | |
1432 | * function. If this is called outside module_exit(), ensure | |
1433 | * that the driver implements fb_open() and fb_release() to | |
1434 | * check that no processes are using the device. | |
1da177e4 LT |
1435 | */ |
1436 | ||
1437 | int | |
1438 | unregister_framebuffer(struct fb_info *fb_info) | |
1439 | { | |
e614b18d | 1440 | struct fb_event event; |
cfafca80 | 1441 | int i, ret = 0; |
1da177e4 LT |
1442 | |
1443 | i = fb_info->node; | |
cfafca80 JB |
1444 | if (!registered_fb[i]) { |
1445 | ret = -EINVAL; | |
1446 | goto done; | |
1447 | } | |
1448 | ||
1449 | event.info = fb_info; | |
1450 | ret = fb_notifier_call_chain(FB_EVENT_FB_UNBIND, &event); | |
1451 | ||
1452 | if (ret) { | |
1453 | ret = -EINVAL; | |
1454 | goto done; | |
1455 | } | |
1da177e4 | 1456 | |
e614b18d AD |
1457 | if (fb_info->pixmap.addr && |
1458 | (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT)) | |
1da177e4 LT |
1459 | kfree(fb_info->pixmap.addr); |
1460 | fb_destroy_modelist(&fb_info->modelist); | |
1461 | registered_fb[i]=NULL; | |
1462 | num_registered_fb--; | |
78cde088 GKH |
1463 | fb_cleanup_device(fb_info); |
1464 | device_destroy(fb_class, MKDEV(FB_MAJOR, i)); | |
e614b18d | 1465 | event.info = fb_info; |
256154fb | 1466 | fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event); |
cfafca80 JB |
1467 | done: |
1468 | return ret; | |
1da177e4 LT |
1469 | } |
1470 | ||
1da177e4 LT |
1471 | /** |
1472 | * fb_set_suspend - low level driver signals suspend | |
1473 | * @info: framebuffer affected | |
1474 | * @state: 0 = resuming, !=0 = suspending | |
1475 | * | |
1476 | * This is meant to be used by low level drivers to | |
1477 | * signal suspend/resume to the core & clients. | |
1478 | * It must be called with the console semaphore held | |
1479 | */ | |
1480 | void fb_set_suspend(struct fb_info *info, int state) | |
1481 | { | |
1482 | struct fb_event event; | |
1483 | ||
1484 | event.info = info; | |
1485 | if (state) { | |
256154fb | 1486 | fb_notifier_call_chain(FB_EVENT_SUSPEND, &event); |
1da177e4 LT |
1487 | info->state = FBINFO_STATE_SUSPENDED; |
1488 | } else { | |
1489 | info->state = FBINFO_STATE_RUNNING; | |
256154fb | 1490 | fb_notifier_call_chain(FB_EVENT_RESUME, &event); |
1da177e4 LT |
1491 | } |
1492 | } | |
1493 | ||
1494 | /** | |
1495 | * fbmem_init - init frame buffer subsystem | |
1496 | * | |
1497 | * Initialize the frame buffer subsystem. | |
1498 | * | |
1499 | * NOTE: This function is _only_ to be called by drivers/char/mem.c. | |
1500 | * | |
1501 | */ | |
1502 | ||
1503 | static int __init | |
1504 | fbmem_init(void) | |
1505 | { | |
1506 | create_proc_read_entry("fb", 0, NULL, fbmem_read_proc, NULL); | |
1507 | ||
1da177e4 LT |
1508 | if (register_chrdev(FB_MAJOR,"fb",&fb_fops)) |
1509 | printk("unable to get major %d for fb devs\n", FB_MAJOR); | |
1510 | ||
56b22935 | 1511 | fb_class = class_create(THIS_MODULE, "graphics"); |
1da177e4 LT |
1512 | if (IS_ERR(fb_class)) { |
1513 | printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class)); | |
1514 | fb_class = NULL; | |
1515 | } | |
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | #ifdef MODULE | |
1520 | module_init(fbmem_init); | |
1521 | static void __exit | |
1522 | fbmem_exit(void) | |
1523 | { | |
c43f89c2 | 1524 | remove_proc_entry("fb", NULL); |
56b22935 | 1525 | class_destroy(fb_class); |
5a340cce | 1526 | unregister_chrdev(FB_MAJOR, "fb"); |
1da177e4 LT |
1527 | } |
1528 | ||
1529 | module_exit(fbmem_exit); | |
1530 | MODULE_LICENSE("GPL"); | |
1531 | MODULE_DESCRIPTION("Framebuffer base"); | |
1532 | #else | |
1533 | subsys_initcall(fbmem_init); | |
1534 | #endif | |
1535 | ||
1536 | int fb_new_modelist(struct fb_info *info) | |
1537 | { | |
1538 | struct fb_event event; | |
1539 | struct fb_var_screeninfo var = info->var; | |
1540 | struct list_head *pos, *n; | |
1541 | struct fb_modelist *modelist; | |
1542 | struct fb_videomode *m, mode; | |
1543 | int err = 1; | |
1544 | ||
1545 | list_for_each_safe(pos, n, &info->modelist) { | |
1546 | modelist = list_entry(pos, struct fb_modelist, list); | |
1547 | m = &modelist->mode; | |
1548 | fb_videomode_to_var(&var, m); | |
1549 | var.activate = FB_ACTIVATE_TEST; | |
1550 | err = fb_set_var(info, &var); | |
1551 | fb_var_to_videomode(&mode, &var); | |
1552 | if (err || !fb_mode_is_equal(m, &mode)) { | |
1553 | list_del(pos); | |
1554 | kfree(pos); | |
1555 | } | |
1556 | } | |
1557 | ||
1558 | err = 1; | |
1559 | ||
1560 | if (!list_empty(&info->modelist)) { | |
1561 | event.info = info; | |
256154fb | 1562 | err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event); |
1da177e4 LT |
1563 | } |
1564 | ||
1565 | return err; | |
1566 | } | |
1567 | ||
0128beee HD |
1568 | static char *video_options[FB_MAX] __read_mostly; |
1569 | static int ofonly __read_mostly; | |
1da177e4 LT |
1570 | |
1571 | /** | |
1572 | * fb_get_options - get kernel boot parameters | |
1573 | * @name: framebuffer name as it would appear in | |
1574 | * the boot parameter line | |
1575 | * (video=<name>:<options>) | |
1576 | * @option: the option will be stored here | |
1577 | * | |
1578 | * NOTE: Needed to maintain backwards compatibility | |
1579 | */ | |
1580 | int fb_get_options(char *name, char **option) | |
1581 | { | |
1582 | char *opt, *options = NULL; | |
1583 | int opt_len, retval = 0; | |
1584 | int name_len = strlen(name), i; | |
1585 | ||
1586 | if (name_len && ofonly && strncmp(name, "offb", 4)) | |
1587 | retval = 1; | |
1588 | ||
1589 | if (name_len && !retval) { | |
1590 | for (i = 0; i < FB_MAX; i++) { | |
1591 | if (video_options[i] == NULL) | |
1592 | continue; | |
1593 | opt_len = strlen(video_options[i]); | |
1594 | if (!opt_len) | |
1595 | continue; | |
1596 | opt = video_options[i]; | |
1597 | if (!strncmp(name, opt, name_len) && | |
1598 | opt[name_len] == ':') | |
1599 | options = opt + name_len + 1; | |
1600 | } | |
1601 | } | |
1602 | if (options && !strncmp(options, "off", 3)) | |
1603 | retval = 1; | |
1604 | ||
1605 | if (option) | |
1606 | *option = options; | |
1607 | ||
1608 | return retval; | |
1609 | } | |
1610 | ||
bc6d7fdf | 1611 | #ifndef MODULE |
1da177e4 LT |
1612 | /** |
1613 | * video_setup - process command line options | |
1614 | * @options: string of options | |
1615 | * | |
1616 | * Process command line options for frame buffer subsystem. | |
1617 | * | |
1618 | * NOTE: This function is a __setup and __init function. | |
1619 | * It only stores the options. Drivers have to call | |
1620 | * fb_get_options() as necessary. | |
1621 | * | |
1622 | * Returns zero. | |
1623 | * | |
1624 | */ | |
75c96f85 | 1625 | static int __init video_setup(char *options) |
1da177e4 LT |
1626 | { |
1627 | int i, global = 0; | |
1628 | ||
1629 | if (!options || !*options) | |
1630 | global = 1; | |
1631 | ||
1632 | if (!global && !strncmp(options, "ofonly", 6)) { | |
1633 | ofonly = 1; | |
1634 | global = 1; | |
1635 | } | |
1636 | ||
1637 | if (!global && !strstr(options, "fb:")) { | |
9a054fba | 1638 | fb_mode_option = options; |
1da177e4 LT |
1639 | global = 1; |
1640 | } | |
1641 | ||
1642 | if (!global) { | |
1643 | for (i = 0; i < FB_MAX; i++) { | |
1644 | if (video_options[i] == NULL) { | |
1645 | video_options[i] = options; | |
1646 | break; | |
1647 | } | |
1648 | ||
1649 | } | |
1650 | } | |
1651 | ||
9b41046c | 1652 | return 1; |
1da177e4 LT |
1653 | } |
1654 | __setup("video=", video_setup); | |
bc6d7fdf | 1655 | #endif |
1da177e4 LT |
1656 | |
1657 | /* | |
1658 | * Visible symbols for modules | |
1659 | */ | |
1660 | ||
1661 | EXPORT_SYMBOL(register_framebuffer); | |
1662 | EXPORT_SYMBOL(unregister_framebuffer); | |
1663 | EXPORT_SYMBOL(num_registered_fb); | |
1664 | EXPORT_SYMBOL(registered_fb); | |
1da177e4 LT |
1665 | EXPORT_SYMBOL(fb_show_logo); |
1666 | EXPORT_SYMBOL(fb_set_var); | |
1667 | EXPORT_SYMBOL(fb_blank); | |
1668 | EXPORT_SYMBOL(fb_pan_display); | |
1669 | EXPORT_SYMBOL(fb_get_buffer_offset); | |
1da177e4 | 1670 | EXPORT_SYMBOL(fb_set_suspend); |
1da177e4 | 1671 | EXPORT_SYMBOL(fb_get_options); |
1da177e4 LT |
1672 | |
1673 | MODULE_LICENSE("GPL"); |