Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/module.h> |
| 15 | |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 16 | #include <linux/compat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/types.h> |
| 18 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/kernel.h> |
| 20 | #include <linux/major.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/mm.h> |
| 23 | #include <linux/mman.h> |
Jon Smirl | a8f340e | 2006-07-10 04:44:12 -0700 | [diff] [blame] | 24 | #include <linux/vt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/init.h> |
| 26 | #include <linux/linux_logo.h> |
| 27 | #include <linux/proc_fs.h> |
Alexey Dobriyan | 0aa1634 | 2008-04-28 02:15:42 -0700 | [diff] [blame] | 28 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/console.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/kmod.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/err.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/device.h> |
| 33 | #include <linux/efi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/fb.h> |
| 35 | |
Antonino A. Daplas | 10eb265 | 2007-07-17 04:05:27 -0700 | [diff] [blame] | 36 | #include <asm/fb.h> |
| 37 | |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | /* |
| 40 | * Frame buffer device initialization and setup routines |
| 41 | */ |
| 42 | |
| 43 | #define FBPIXMAPSIZE (1024 * 8) |
| 44 | |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 45 | static DEFINE_MUTEX(registration_lock); |
Helge Deller | 0128bee | 2006-12-08 02:40:29 -0800 | [diff] [blame] | 46 | struct fb_info *registered_fb[FB_MAX] __read_mostly; |
| 47 | int num_registered_fb __read_mostly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 49 | static struct fb_info *get_fb_info(unsigned int idx) |
| 50 | { |
| 51 | struct fb_info *fb_info; |
| 52 | |
| 53 | if (idx >= FB_MAX) |
| 54 | return ERR_PTR(-ENODEV); |
| 55 | |
| 56 | mutex_lock(®istration_lock); |
| 57 | fb_info = registered_fb[idx]; |
| 58 | if (fb_info) |
| 59 | atomic_inc(&fb_info->count); |
| 60 | mutex_unlock(®istration_lock); |
| 61 | |
| 62 | return fb_info; |
| 63 | } |
| 64 | |
| 65 | static void put_fb_info(struct fb_info *fb_info) |
| 66 | { |
| 67 | if (!atomic_dec_and_test(&fb_info->count)) |
| 68 | return; |
| 69 | if (fb_info->fbops->fb_destroy) |
| 70 | fb_info->fbops->fb_destroy(fb_info); |
| 71 | } |
| 72 | |
Andrew Morton | 6a7f282 | 2009-03-31 15:25:19 -0700 | [diff] [blame] | 73 | int lock_fb_info(struct fb_info *info) |
| 74 | { |
| 75 | mutex_lock(&info->lock); |
| 76 | if (!info->fbops) { |
| 77 | mutex_unlock(&info->lock); |
| 78 | return 0; |
| 79 | } |
| 80 | return 1; |
| 81 | } |
| 82 | EXPORT_SYMBOL(lock_fb_info); |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | /* |
| 85 | * Helpers |
| 86 | */ |
| 87 | |
Antonino A. Daplas | b8c9094 | 2005-09-09 13:04:37 -0700 | [diff] [blame] | 88 | int fb_get_color_depth(struct fb_var_screeninfo *var, |
| 89 | struct fb_fix_screeninfo *fix) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | { |
Antonino A. Daplas | b8c9094 | 2005-09-09 13:04:37 -0700 | [diff] [blame] | 91 | int depth = 0; |
| 92 | |
| 93 | if (fix->visual == FB_VISUAL_MONO01 || |
| 94 | fix->visual == FB_VISUAL_MONO10) |
| 95 | depth = 1; |
| 96 | else { |
| 97 | if (var->green.length == var->blue.length && |
| 98 | var->green.length == var->red.length && |
| 99 | var->green.offset == var->blue.offset && |
| 100 | var->green.offset == var->red.offset) |
| 101 | depth = var->green.length; |
| 102 | else |
| 103 | depth = var->green.length + var->red.length + |
| 104 | var->blue.length; |
| 105 | } |
| 106 | |
| 107 | return depth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | EXPORT_SYMBOL(fb_get_color_depth); |
| 110 | |
| 111 | /* |
James Simmons | f5a9951 | 2005-06-21 17:16:58 -0700 | [diff] [blame] | 112 | * Data padding functions. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | */ |
James Simmons | f1ab5da | 2005-06-21 17:17:07 -0700 | [diff] [blame] | 114 | void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | { |
Antonino A. Daplas | 829e79b | 2005-09-09 13:10:04 -0700 | [diff] [blame] | 116 | __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, height); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | } |
James Simmons | f1ab5da | 2005-06-21 17:17:07 -0700 | [diff] [blame] | 118 | EXPORT_SYMBOL(fb_pad_aligned_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
James Simmons | f1ab5da | 2005-06-21 17:17:07 -0700 | [diff] [blame] | 120 | void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height, |
| 121 | u32 shift_high, u32 shift_low, u32 mod) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
| 123 | u8 mask = (u8) (0xfff << shift_high), tmp; |
| 124 | int i, j; |
| 125 | |
| 126 | for (i = height; i--; ) { |
| 127 | for (j = 0; j < idx; j++) { |
| 128 | tmp = dst[j]; |
| 129 | tmp &= mask; |
| 130 | tmp |= *src >> shift_low; |
| 131 | dst[j] = tmp; |
| 132 | tmp = *src << shift_high; |
| 133 | dst[j+1] = tmp; |
| 134 | src++; |
| 135 | } |
| 136 | tmp = dst[idx]; |
| 137 | tmp &= mask; |
| 138 | tmp |= *src >> shift_low; |
| 139 | dst[idx] = tmp; |
| 140 | if (shift_high < mod) { |
| 141 | tmp = *src << shift_high; |
| 142 | dst[idx+1] = tmp; |
| 143 | } |
| 144 | src++; |
| 145 | dst += d_pitch; |
| 146 | } |
| 147 | } |
James Simmons | f1ab5da | 2005-06-21 17:17:07 -0700 | [diff] [blame] | 148 | EXPORT_SYMBOL(fb_pad_unaligned_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
| 150 | /* |
| 151 | * we need to lock this section since fb_cursor |
| 152 | * may use fb_imageblit() |
| 153 | */ |
| 154 | char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size) |
| 155 | { |
| 156 | u32 align = buf->buf_align - 1, offset; |
| 157 | char *addr = buf->addr; |
| 158 | |
| 159 | /* If IO mapped, we need to sync before access, no sharing of |
| 160 | * the pixmap is done |
| 161 | */ |
| 162 | if (buf->flags & FB_PIXMAP_IO) { |
| 163 | if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC)) |
| 164 | info->fbops->fb_sync(info); |
| 165 | return addr; |
| 166 | } |
| 167 | |
| 168 | /* See if we fit in the remaining pixmap space */ |
| 169 | offset = buf->offset + align; |
| 170 | offset &= ~align; |
| 171 | if (offset + size > buf->size) { |
| 172 | /* We do not fit. In order to be able to re-use the buffer, |
| 173 | * we must ensure no asynchronous DMA'ing or whatever operation |
| 174 | * is in progress, we sync for that. |
| 175 | */ |
| 176 | if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC)) |
| 177 | info->fbops->fb_sync(info); |
| 178 | offset = 0; |
| 179 | } |
| 180 | buf->offset = offset + size; |
| 181 | addr += offset; |
| 182 | |
| 183 | return addr; |
| 184 | } |
| 185 | |
| 186 | #ifdef CONFIG_LOGO |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
| 188 | static inline unsigned safe_shift(unsigned d, int n) |
| 189 | { |
| 190 | return n < 0 ? d >> -n : d << n; |
| 191 | } |
| 192 | |
| 193 | static void fb_set_logocmap(struct fb_info *info, |
| 194 | const struct linux_logo *logo) |
| 195 | { |
| 196 | struct fb_cmap palette_cmap; |
| 197 | u16 palette_green[16]; |
| 198 | u16 palette_blue[16]; |
| 199 | u16 palette_red[16]; |
| 200 | int i, j, n; |
| 201 | const unsigned char *clut = logo->clut; |
| 202 | |
| 203 | palette_cmap.start = 0; |
| 204 | palette_cmap.len = 16; |
| 205 | palette_cmap.red = palette_red; |
| 206 | palette_cmap.green = palette_green; |
| 207 | palette_cmap.blue = palette_blue; |
| 208 | palette_cmap.transp = NULL; |
| 209 | |
| 210 | for (i = 0; i < logo->clutsize; i += n) { |
| 211 | n = logo->clutsize - i; |
| 212 | /* palette_cmap provides space for only 16 colors at once */ |
| 213 | if (n > 16) |
| 214 | n = 16; |
| 215 | palette_cmap.start = 32 + i; |
| 216 | palette_cmap.len = n; |
| 217 | for (j = 0; j < n; ++j) { |
| 218 | palette_cmap.red[j] = clut[0] << 8 | clut[0]; |
| 219 | palette_cmap.green[j] = clut[1] << 8 | clut[1]; |
| 220 | palette_cmap.blue[j] = clut[2] << 8 | clut[2]; |
| 221 | clut += 3; |
| 222 | } |
| 223 | fb_set_cmap(&palette_cmap, info); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | static void fb_set_logo_truepalette(struct fb_info *info, |
| 228 | const struct linux_logo *logo, |
| 229 | u32 *palette) |
| 230 | { |
Helge Deller | 0128bee | 2006-12-08 02:40:29 -0800 | [diff] [blame] | 231 | static const unsigned char mask[] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | unsigned char redmask, greenmask, bluemask; |
| 233 | int redshift, greenshift, blueshift; |
| 234 | int i; |
| 235 | const unsigned char *clut = logo->clut; |
| 236 | |
| 237 | /* |
| 238 | * We have to create a temporary palette since console palette is only |
| 239 | * 16 colors long. |
| 240 | */ |
| 241 | /* Bug: Doesn't obey msb_right ... (who needs that?) */ |
| 242 | redmask = mask[info->var.red.length < 8 ? info->var.red.length : 8]; |
| 243 | greenmask = mask[info->var.green.length < 8 ? info->var.green.length : 8]; |
| 244 | bluemask = mask[info->var.blue.length < 8 ? info->var.blue.length : 8]; |
| 245 | redshift = info->var.red.offset - (8 - info->var.red.length); |
| 246 | greenshift = info->var.green.offset - (8 - info->var.green.length); |
| 247 | blueshift = info->var.blue.offset - (8 - info->var.blue.length); |
| 248 | |
| 249 | for ( i = 0; i < logo->clutsize; i++) { |
| 250 | palette[i+32] = (safe_shift((clut[0] & redmask), redshift) | |
| 251 | safe_shift((clut[1] & greenmask), greenshift) | |
| 252 | safe_shift((clut[2] & bluemask), blueshift)); |
| 253 | clut += 3; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | static void fb_set_logo_directpalette(struct fb_info *info, |
| 258 | const struct linux_logo *logo, |
| 259 | u32 *palette) |
| 260 | { |
| 261 | int redshift, greenshift, blueshift; |
| 262 | int i; |
| 263 | |
| 264 | redshift = info->var.red.offset; |
| 265 | greenshift = info->var.green.offset; |
| 266 | blueshift = info->var.blue.offset; |
| 267 | |
Clemens Ladisch | cf7ee55 | 2008-11-19 15:36:10 -0800 | [diff] [blame] | 268 | for (i = 32; i < 32 + logo->clutsize; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | palette[i] = i << redshift | i << greenshift | i << blueshift; |
| 270 | } |
| 271 | |
| 272 | static void fb_set_logo(struct fb_info *info, |
| 273 | const struct linux_logo *logo, u8 *dst, |
| 274 | int depth) |
| 275 | { |
Antonino A. Daplas | b8c9094 | 2005-09-09 13:04:37 -0700 | [diff] [blame] | 276 | int i, j, k; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | const u8 *src = logo->data; |
Antonino A. Daplas | b8c9094 | 2005-09-09 13:04:37 -0700 | [diff] [blame] | 278 | u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; |
| 279 | u8 fg = 1, d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Antonino A. Daplas | 1692b37 | 2007-07-31 00:37:36 -0700 | [diff] [blame] | 281 | switch (fb_get_color_depth(&info->var, &info->fix)) { |
| 282 | case 1: |
| 283 | fg = 1; |
| 284 | break; |
| 285 | case 2: |
| 286 | fg = 3; |
| 287 | break; |
| 288 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | fg = 7; |
Antonino A. Daplas | 1692b37 | 2007-07-31 00:37:36 -0700 | [diff] [blame] | 290 | break; |
| 291 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Antonino A. Daplas | b8c9094 | 2005-09-09 13:04:37 -0700 | [diff] [blame] | 293 | if (info->fix.visual == FB_VISUAL_MONO01 || |
| 294 | info->fix.visual == FB_VISUAL_MONO10) |
| 295 | fg = ~((u8) (0xfff << info->var.green.length)); |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | switch (depth) { |
| 298 | case 4: |
| 299 | for (i = 0; i < logo->height; i++) |
| 300 | for (j = 0; j < logo->width; src++) { |
| 301 | *dst++ = *src >> 4; |
| 302 | j++; |
| 303 | if (j < logo->width) { |
| 304 | *dst++ = *src & 0x0f; |
| 305 | j++; |
| 306 | } |
| 307 | } |
| 308 | break; |
| 309 | case 1: |
| 310 | for (i = 0; i < logo->height; i++) { |
| 311 | for (j = 0; j < logo->width; src++) { |
| 312 | d = *src ^ xor; |
| 313 | for (k = 7; k >= 0; k--) { |
| 314 | *dst++ = ((d >> k) & 1) ? fg : 0; |
| 315 | j++; |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | break; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | /* |
| 324 | * Three (3) kinds of logo maps exist. linux_logo_clut224 (>16 colors), |
| 325 | * linux_logo_vga16 (16 colors) and linux_logo_mono (2 colors). Depending on |
| 326 | * the visual format and color depth of the framebuffer, the DAC, the |
| 327 | * pseudo_palette, and the logo data will be adjusted accordingly. |
| 328 | * |
| 329 | * Case 1 - linux_logo_clut224: |
| 330 | * Color exceeds the number of console colors (16), thus we set the hardware DAC |
| 331 | * using fb_set_cmap() appropriately. The "needs_cmapreset" flag will be set. |
| 332 | * |
| 333 | * For visuals that require color info from the pseudo_palette, we also construct |
| 334 | * one for temporary use. The "needs_directpalette" or "needs_truepalette" flags |
| 335 | * will be set. |
| 336 | * |
| 337 | * Case 2 - linux_logo_vga16: |
| 338 | * The number of colors just matches the console colors, thus there is no need |
| 339 | * to set the DAC or the pseudo_palette. However, the bitmap is packed, ie, |
| 340 | * each byte contains color information for two pixels (upper and lower nibble). |
| 341 | * To be consistent with fb_imageblit() usage, we therefore separate the two |
| 342 | * nibbles into separate bytes. The "depth" flag will be set to 4. |
| 343 | * |
| 344 | * Case 3 - linux_logo_mono: |
| 345 | * This is similar with Case 2. Each byte contains information for 8 pixels. |
| 346 | * We isolate each bit and expand each into a byte. The "depth" flag will |
| 347 | * be set to 1. |
| 348 | */ |
| 349 | static struct logo_data { |
| 350 | int depth; |
| 351 | int needs_directpalette; |
| 352 | int needs_truepalette; |
| 353 | int needs_cmapreset; |
| 354 | const struct linux_logo *logo; |
Helge Deller | 0128bee | 2006-12-08 02:40:29 -0800 | [diff] [blame] | 355 | } fb_logo __read_mostly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 357 | static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height) |
| 358 | { |
| 359 | u32 size = width * height, i; |
| 360 | |
| 361 | out += size - 1; |
| 362 | |
| 363 | for (i = size; i--; ) |
| 364 | *out-- = *in++; |
| 365 | } |
| 366 | |
| 367 | static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height) |
| 368 | { |
Antonino A. Daplas | f837e6f | 2006-06-26 00:26:56 -0700 | [diff] [blame] | 369 | int i, j, h = height - 1; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 370 | |
| 371 | for (i = 0; i < height; i++) |
| 372 | for (j = 0; j < width; j++) |
Antonino A. Daplas | f837e6f | 2006-06-26 00:26:56 -0700 | [diff] [blame] | 373 | out[height * j + h - i] = *in++; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height) |
| 377 | { |
| 378 | int i, j, w = width - 1; |
| 379 | |
| 380 | for (i = 0; i < height; i++) |
| 381 | for (j = 0; j < width; j++) |
| 382 | out[height * (w - j) + i] = *in++; |
| 383 | } |
| 384 | |
| 385 | static void fb_rotate_logo(struct fb_info *info, u8 *dst, |
| 386 | struct fb_image *image, int rotate) |
| 387 | { |
| 388 | u32 tmp; |
| 389 | |
| 390 | if (rotate == FB_ROTATE_UD) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 391 | fb_rotate_logo_ud(image->data, dst, image->width, |
| 392 | image->height); |
Geert Uytterhoeven | abed5d1 | 2007-05-08 00:37:57 -0700 | [diff] [blame] | 393 | image->dx = info->var.xres - image->width - image->dx; |
| 394 | image->dy = info->var.yres - image->height - image->dy; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 395 | } else if (rotate == FB_ROTATE_CW) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 396 | fb_rotate_logo_cw(image->data, dst, image->width, |
| 397 | image->height); |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 398 | tmp = image->width; |
| 399 | image->width = image->height; |
| 400 | image->height = tmp; |
Geert Uytterhoeven | abed5d1 | 2007-05-08 00:37:57 -0700 | [diff] [blame] | 401 | tmp = image->dy; |
| 402 | image->dy = image->dx; |
| 403 | image->dx = info->var.xres - image->width - tmp; |
Antonino A. Daplas | f837e6f | 2006-06-26 00:26:56 -0700 | [diff] [blame] | 404 | } else if (rotate == FB_ROTATE_CCW) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 405 | fb_rotate_logo_ccw(image->data, dst, image->width, |
| 406 | image->height); |
Antonino A. Daplas | f837e6f | 2006-06-26 00:26:56 -0700 | [diff] [blame] | 407 | tmp = image->width; |
| 408 | image->width = image->height; |
| 409 | image->height = tmp; |
Geert Uytterhoeven | abed5d1 | 2007-05-08 00:37:57 -0700 | [diff] [blame] | 410 | tmp = image->dx; |
| 411 | image->dx = image->dy; |
| 412 | image->dy = info->var.yres - image->height - tmp; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | image->data = dst; |
| 416 | } |
| 417 | |
| 418 | static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 419 | int rotate, unsigned int num) |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 420 | { |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 421 | unsigned int x; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 422 | |
| 423 | if (rotate == FB_ROTATE_UR) { |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 424 | for (x = 0; |
| 425 | x < num && image->dx + image->width <= info->var.xres; |
| 426 | x++) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 427 | info->fbops->fb_imageblit(info, image); |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 428 | image->dx += image->width + 8; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 429 | } |
| 430 | } else if (rotate == FB_ROTATE_UD) { |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 431 | for (x = 0; x < num && image->dx >= 0; x++) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 432 | info->fbops->fb_imageblit(info, image); |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 433 | image->dx -= image->width + 8; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 434 | } |
| 435 | } else if (rotate == FB_ROTATE_CW) { |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 436 | for (x = 0; |
| 437 | x < num && image->dy + image->height <= info->var.yres; |
| 438 | x++) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 439 | info->fbops->fb_imageblit(info, image); |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 440 | image->dy += image->height + 8; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 441 | } |
| 442 | } else if (rotate == FB_ROTATE_CCW) { |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 443 | for (x = 0; x < num && image->dy >= 0; x++) { |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 444 | info->fbops->fb_imageblit(info, image); |
Geert Uytterhoeven | 448d479 | 2007-05-08 00:37:56 -0700 | [diff] [blame] | 445 | image->dy -= image->height + 8; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 446 | } |
| 447 | } |
| 448 | } |
| 449 | |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 450 | static int fb_show_logo_line(struct fb_info *info, int rotate, |
| 451 | const struct linux_logo *logo, int y, |
| 452 | unsigned int n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | { |
| 454 | u32 *palette = NULL, *saved_pseudo_palette = NULL; |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 455 | unsigned char *logo_new = NULL, *logo_rotate = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | struct fb_image image; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
| 458 | /* Return if the frame buffer is not mapped or suspended */ |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 459 | if (logo == NULL || info->state != FBINFO_STATE_RUNNING || |
Antonino A. Daplas | 70802c6 | 2007-05-08 00:38:14 -0700 | [diff] [blame] | 460 | info->flags & FBINFO_MODULE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | return 0; |
| 462 | |
| 463 | image.depth = 8; |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 464 | image.data = logo->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | if (fb_logo.needs_cmapreset) |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 467 | fb_set_logocmap(info, logo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Geert Uytterhoeven | 9900abf | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 469 | if (fb_logo.needs_truepalette || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | fb_logo.needs_directpalette) { |
| 471 | palette = kmalloc(256 * 4, GFP_KERNEL); |
| 472 | if (palette == NULL) |
| 473 | return 0; |
| 474 | |
| 475 | if (fb_logo.needs_truepalette) |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 476 | fb_set_logo_truepalette(info, logo, palette); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | else |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 478 | fb_set_logo_directpalette(info, logo, palette); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
| 480 | saved_pseudo_palette = info->pseudo_palette; |
| 481 | info->pseudo_palette = palette; |
| 482 | } |
| 483 | |
| 484 | if (fb_logo.depth <= 4) { |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 485 | logo_new = kmalloc(logo->width * logo->height, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | if (logo_new == NULL) { |
| 487 | kfree(palette); |
| 488 | if (saved_pseudo_palette) |
| 489 | info->pseudo_palette = saved_pseudo_palette; |
| 490 | return 0; |
| 491 | } |
| 492 | image.data = logo_new; |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 493 | fb_set_logo(info, logo, logo_new, fb_logo.depth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 496 | image.dx = 0; |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 497 | image.dy = y; |
| 498 | image.width = logo->width; |
| 499 | image.height = logo->height; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 501 | if (rotate) { |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 502 | logo_rotate = kmalloc(logo->width * |
| 503 | logo->height, GFP_KERNEL); |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 504 | if (logo_rotate) |
| 505 | fb_rotate_logo(info, logo_rotate, &image, rotate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | } |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 507 | |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 508 | fb_do_show_logo(info, &image, rotate, n); |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | kfree(palette); |
| 511 | if (saved_pseudo_palette != NULL) |
| 512 | info->pseudo_palette = saved_pseudo_palette; |
| 513 | kfree(logo_new); |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 514 | kfree(logo_rotate); |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 515 | return logo->height; |
| 516 | } |
| 517 | |
Geert Uytterhoeven | 9900abf | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 518 | |
| 519 | #ifdef CONFIG_FB_LOGO_EXTRA |
| 520 | |
| 521 | #define FB_LOGO_EX_NUM_MAX 10 |
| 522 | static struct logo_data_extra { |
| 523 | const struct linux_logo *logo; |
| 524 | unsigned int n; |
| 525 | } fb_logo_ex[FB_LOGO_EX_NUM_MAX]; |
| 526 | static unsigned int fb_logo_ex_num; |
| 527 | |
| 528 | void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n) |
| 529 | { |
| 530 | if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX) |
| 531 | return; |
| 532 | |
| 533 | fb_logo_ex[fb_logo_ex_num].logo = logo; |
| 534 | fb_logo_ex[fb_logo_ex_num].n = n; |
| 535 | fb_logo_ex_num++; |
| 536 | } |
| 537 | |
| 538 | static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height, |
| 539 | unsigned int yres) |
| 540 | { |
| 541 | unsigned int i; |
| 542 | |
| 543 | /* FIXME: logo_ex supports only truecolor fb. */ |
| 544 | if (info->fix.visual != FB_VISUAL_TRUECOLOR) |
| 545 | fb_logo_ex_num = 0; |
| 546 | |
| 547 | for (i = 0; i < fb_logo_ex_num; i++) { |
Geert Uytterhoeven | 4fb6de2 | 2009-01-06 14:42:37 -0800 | [diff] [blame] | 548 | if (fb_logo_ex[i].logo->type != fb_logo.logo->type) { |
| 549 | fb_logo_ex[i].logo = NULL; |
| 550 | continue; |
| 551 | } |
Geert Uytterhoeven | 9900abf | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 552 | height += fb_logo_ex[i].logo->height; |
| 553 | if (height > yres) { |
| 554 | height -= fb_logo_ex[i].logo->height; |
| 555 | fb_logo_ex_num = i; |
| 556 | break; |
| 557 | } |
| 558 | } |
| 559 | return height; |
| 560 | } |
| 561 | |
| 562 | static int fb_show_extra_logos(struct fb_info *info, int y, int rotate) |
| 563 | { |
| 564 | unsigned int i; |
| 565 | |
| 566 | for (i = 0; i < fb_logo_ex_num; i++) |
| 567 | y += fb_show_logo_line(info, rotate, |
| 568 | fb_logo_ex[i].logo, y, fb_logo_ex[i].n); |
| 569 | |
| 570 | return y; |
| 571 | } |
| 572 | |
| 573 | #else /* !CONFIG_FB_LOGO_EXTRA */ |
| 574 | |
| 575 | static inline int fb_prepare_extra_logos(struct fb_info *info, |
| 576 | unsigned int height, |
| 577 | unsigned int yres) |
| 578 | { |
| 579 | return height; |
| 580 | } |
| 581 | |
| 582 | static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate) |
| 583 | { |
| 584 | return y; |
| 585 | } |
| 586 | |
| 587 | #endif /* CONFIG_FB_LOGO_EXTRA */ |
| 588 | |
| 589 | |
| 590 | int fb_prepare_logo(struct fb_info *info, int rotate) |
| 591 | { |
| 592 | int depth = fb_get_color_depth(&info->var, &info->fix); |
| 593 | unsigned int yres; |
| 594 | |
| 595 | memset(&fb_logo, 0, sizeof(struct logo_data)); |
| 596 | |
| 597 | if (info->flags & FBINFO_MISC_TILEBLITTING || |
| 598 | info->flags & FBINFO_MODULE) |
| 599 | return 0; |
| 600 | |
| 601 | if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { |
| 602 | depth = info->var.blue.length; |
| 603 | if (info->var.red.length < depth) |
| 604 | depth = info->var.red.length; |
| 605 | if (info->var.green.length < depth) |
| 606 | depth = info->var.green.length; |
| 607 | } |
| 608 | |
| 609 | if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) { |
| 610 | /* assume console colormap */ |
| 611 | depth = 4; |
| 612 | } |
| 613 | |
Geert Uytterhoeven | 9900abf | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 614 | /* Return if no suitable logo was found */ |
| 615 | fb_logo.logo = fb_find_logo(depth); |
| 616 | |
| 617 | if (!fb_logo.logo) { |
| 618 | return 0; |
| 619 | } |
| 620 | |
| 621 | if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD) |
| 622 | yres = info->var.yres; |
| 623 | else |
| 624 | yres = info->var.xres; |
| 625 | |
| 626 | if (fb_logo.logo->height > yres) { |
| 627 | fb_logo.logo = NULL; |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | /* What depth we asked for might be different from what we get */ |
| 632 | if (fb_logo.logo->type == LINUX_LOGO_CLUT224) |
| 633 | fb_logo.depth = 8; |
| 634 | else if (fb_logo.logo->type == LINUX_LOGO_VGA16) |
| 635 | fb_logo.depth = 4; |
| 636 | else |
| 637 | fb_logo.depth = 1; |
| 638 | |
Antonino A. Daplas | 1692b37 | 2007-07-31 00:37:36 -0700 | [diff] [blame] | 639 | |
| 640 | if (fb_logo.depth > 4 && depth > 4) { |
| 641 | switch (info->fix.visual) { |
| 642 | case FB_VISUAL_TRUECOLOR: |
| 643 | fb_logo.needs_truepalette = 1; |
| 644 | break; |
| 645 | case FB_VISUAL_DIRECTCOLOR: |
| 646 | fb_logo.needs_directpalette = 1; |
| 647 | fb_logo.needs_cmapreset = 1; |
| 648 | break; |
| 649 | case FB_VISUAL_PSEUDOCOLOR: |
| 650 | fb_logo.needs_cmapreset = 1; |
| 651 | break; |
| 652 | } |
| 653 | } |
| 654 | |
Geert Uytterhoeven | 9900abf | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 655 | return fb_prepare_extra_logos(info, fb_logo.logo->height, yres); |
| 656 | } |
| 657 | |
Geert Uytterhoeven | 90da63e5 | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 658 | int fb_show_logo(struct fb_info *info, int rotate) |
| 659 | { |
Geert Uytterhoeven | 9900abf | 2007-07-17 04:05:50 -0700 | [diff] [blame] | 660 | int y; |
| 661 | |
| 662 | y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, |
| 663 | num_online_cpus()); |
| 664 | y = fb_show_extra_logos(info, y, rotate); |
| 665 | |
| 666 | return y; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | } |
| 668 | #else |
Antonino A. Daplas | 9c44e5f | 2005-11-08 21:39:10 -0800 | [diff] [blame] | 669 | int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; } |
| 670 | int fb_show_logo(struct fb_info *info, int rotate) { return 0; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | #endif /* CONFIG_LOGO */ |
| 672 | |
Alexey Dobriyan | 0aa1634 | 2008-04-28 02:15:42 -0700 | [diff] [blame] | 673 | static void *fb_seq_start(struct seq_file *m, loff_t *pos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | { |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 675 | mutex_lock(®istration_lock); |
Alexey Dobriyan | 0aa1634 | 2008-04-28 02:15:42 -0700 | [diff] [blame] | 676 | return (*pos < FB_MAX) ? pos : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
| 678 | |
Alexey Dobriyan | 0aa1634 | 2008-04-28 02:15:42 -0700 | [diff] [blame] | 679 | static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos) |
| 680 | { |
| 681 | (*pos)++; |
| 682 | return (*pos < FB_MAX) ? pos : NULL; |
| 683 | } |
| 684 | |
| 685 | static void fb_seq_stop(struct seq_file *m, void *v) |
| 686 | { |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 687 | mutex_unlock(®istration_lock); |
Alexey Dobriyan | 0aa1634 | 2008-04-28 02:15:42 -0700 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | static int fb_seq_show(struct seq_file *m, void *v) |
| 691 | { |
| 692 | int i = *(loff_t *)v; |
| 693 | struct fb_info *fi = registered_fb[i]; |
| 694 | |
| 695 | if (fi) |
| 696 | seq_printf(m, "%d %s\n", fi->node, fi->fix.id); |
| 697 | return 0; |
| 698 | } |
| 699 | |
| 700 | static const struct seq_operations proc_fb_seq_ops = { |
| 701 | .start = fb_seq_start, |
| 702 | .next = fb_seq_next, |
| 703 | .stop = fb_seq_stop, |
| 704 | .show = fb_seq_show, |
| 705 | }; |
| 706 | |
| 707 | static int proc_fb_open(struct inode *inode, struct file *file) |
| 708 | { |
| 709 | return seq_open(file, &proc_fb_seq_ops); |
| 710 | } |
| 711 | |
| 712 | static const struct file_operations fb_proc_fops = { |
| 713 | .owner = THIS_MODULE, |
| 714 | .open = proc_fb_open, |
| 715 | .read = seq_read, |
| 716 | .llseek = seq_lseek, |
| 717 | .release = seq_release, |
| 718 | }; |
| 719 | |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 720 | /* |
| 721 | * We hold a reference to the fb_info in file->private_data, |
| 722 | * but if the current registered fb has changed, we don't |
| 723 | * actually want to use it. |
| 724 | * |
| 725 | * So look up the fb_info using the inode minor number, |
| 726 | * and just verify it against the reference we have. |
| 727 | */ |
| 728 | static struct fb_info *file_fb_info(struct file *file) |
| 729 | { |
| 730 | struct inode *inode = file->f_path.dentry->d_inode; |
| 731 | int fbidx = iminor(inode); |
| 732 | struct fb_info *info = registered_fb[fbidx]; |
| 733 | |
| 734 | if (info != file->private_data) |
| 735 | info = NULL; |
| 736 | return info; |
| 737 | } |
| 738 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | static ssize_t |
| 740 | fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
| 741 | { |
| 742 | unsigned long p = *ppos; |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 743 | struct fb_info *info = file_fb_info(file); |
James Hogan | f11b478d | 2010-10-27 15:33:28 -0700 | [diff] [blame] | 744 | u8 *buffer, *dst; |
| 745 | u8 __iomem *src; |
| 746 | int c, cnt = 0, err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | unsigned long total_size; |
| 748 | |
| 749 | if (!info || ! info->screen_base) |
| 750 | return -ENODEV; |
| 751 | |
| 752 | if (info->state != FBINFO_STATE_RUNNING) |
| 753 | return -EPERM; |
| 754 | |
| 755 | if (info->fbops->fb_read) |
Antonino A. Daplas | 3f9b088 | 2007-05-08 00:39:02 -0700 | [diff] [blame] | 756 | return info->fbops->fb_read(info, buf, count, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
| 758 | total_size = info->screen_size; |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 759 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | if (total_size == 0) |
| 761 | total_size = info->fix.smem_len; |
| 762 | |
| 763 | if (p >= total_size) |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 764 | return 0; |
| 765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | if (count >= total_size) |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 767 | count = total_size; |
| 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | if (count + p > total_size) |
| 770 | count = total_size - p; |
| 771 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, |
| 773 | GFP_KERNEL); |
| 774 | if (!buffer) |
| 775 | return -ENOMEM; |
| 776 | |
James Hogan | f11b478d | 2010-10-27 15:33:28 -0700 | [diff] [blame] | 777 | src = (u8 __iomem *) (info->screen_base + p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | dst = buffer; |
James Hogan | f11b478d | 2010-10-27 15:33:28 -0700 | [diff] [blame] | 785 | fb_memcpy_fromfb(dst, src, c); |
| 786 | dst += c; |
| 787 | src += c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
| 789 | if (copy_to_user(buf, buffer, c)) { |
| 790 | err = -EFAULT; |
| 791 | break; |
| 792 | } |
| 793 | *ppos += c; |
| 794 | buf += c; |
| 795 | cnt += c; |
| 796 | count -= c; |
| 797 | } |
| 798 | |
| 799 | kfree(buffer); |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | return (err) ? err : cnt; |
| 802 | } |
| 803 | |
| 804 | static ssize_t |
| 805 | fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) |
| 806 | { |
| 807 | unsigned long p = *ppos; |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 808 | struct fb_info *info = file_fb_info(file); |
James Hogan | f11b478d | 2010-10-27 15:33:28 -0700 | [diff] [blame] | 809 | u8 *buffer, *src; |
| 810 | u8 __iomem *dst; |
| 811 | int c, cnt = 0, err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | unsigned long total_size; |
| 813 | |
| 814 | if (!info || !info->screen_base) |
| 815 | return -ENODEV; |
| 816 | |
| 817 | if (info->state != FBINFO_STATE_RUNNING) |
| 818 | return -EPERM; |
| 819 | |
| 820 | if (info->fbops->fb_write) |
Antonino A. Daplas | 3f9b088 | 2007-05-08 00:39:02 -0700 | [diff] [blame] | 821 | return info->fbops->fb_write(info, buf, count, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
| 823 | total_size = info->screen_size; |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | if (total_size == 0) |
| 826 | total_size = info->fix.smem_len; |
| 827 | |
| 828 | if (p > total_size) |
Antonino A. Daplas | 6a2a886 | 2006-04-18 22:22:12 -0700 | [diff] [blame] | 829 | return -EFBIG; |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 830 | |
Antonino A. Daplas | 6a2a886 | 2006-04-18 22:22:12 -0700 | [diff] [blame] | 831 | if (count > total_size) { |
| 832 | err = -EFBIG; |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 833 | count = total_size; |
Antonino A. Daplas | 6a2a886 | 2006-04-18 22:22:12 -0700 | [diff] [blame] | 834 | } |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 835 | |
Antonino A. Daplas | 6a2a886 | 2006-04-18 22:22:12 -0700 | [diff] [blame] | 836 | if (count + p > total_size) { |
| 837 | if (!err) |
| 838 | err = -ENOSPC; |
| 839 | |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 840 | count = total_size - p; |
Antonino A. Daplas | 6a2a886 | 2006-04-18 22:22:12 -0700 | [diff] [blame] | 841 | } |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 842 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, |
| 844 | GFP_KERNEL); |
| 845 | if (!buffer) |
| 846 | return -ENOMEM; |
| 847 | |
James Hogan | f11b478d | 2010-10-27 15:33:28 -0700 | [diff] [blame] | 848 | dst = (u8 __iomem *) (info->screen_base + p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
| 850 | if (info->fbops->fb_sync) |
| 851 | info->fbops->fb_sync(info); |
| 852 | |
| 853 | while (count) { |
| 854 | c = (count > PAGE_SIZE) ? PAGE_SIZE : count; |
| 855 | src = buffer; |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | if (copy_from_user(src, buf, c)) { |
| 858 | err = -EFAULT; |
| 859 | break; |
| 860 | } |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 861 | |
James Hogan | f11b478d | 2010-10-27 15:33:28 -0700 | [diff] [blame] | 862 | fb_memcpy_tofb(dst, src, c); |
| 863 | dst += c; |
| 864 | src += c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | *ppos += c; |
| 866 | buf += c; |
| 867 | cnt += c; |
| 868 | count -= c; |
| 869 | } |
Antonino A. Daplas | 0a484a3 | 2006-01-09 20:53:37 -0800 | [diff] [blame] | 870 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | kfree(buffer); |
| 872 | |
Antonino A. Daplas | 6a2a886 | 2006-04-18 22:22:12 -0700 | [diff] [blame] | 873 | return (cnt) ? cnt : err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | } |
| 875 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | int |
| 877 | fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var) |
| 878 | { |
Antonino A. Daplas | 1207069 | 2005-12-12 22:17:17 -0800 | [diff] [blame] | 879 | struct fb_fix_screeninfo *fix = &info->fix; |
Ville Syrjala | 7572a1e | 2008-07-23 21:31:28 -0700 | [diff] [blame] | 880 | unsigned int yres = info->var.yres; |
| 881 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
Antonino A. Daplas | 1207069 | 2005-12-12 22:17:17 -0800 | [diff] [blame] | 883 | if (var->yoffset > 0) { |
| 884 | if (var->vmode & FB_VMODE_YWRAP) { |
| 885 | if (!fix->ywrapstep || (var->yoffset % fix->ywrapstep)) |
| 886 | err = -EINVAL; |
| 887 | else |
| 888 | yres = 0; |
| 889 | } else if (!fix->ypanstep || (var->yoffset % fix->ypanstep)) |
| 890 | err = -EINVAL; |
| 891 | } |
| 892 | |
| 893 | if (var->xoffset > 0 && (!fix->xpanstep || |
| 894 | (var->xoffset % fix->xpanstep))) |
| 895 | err = -EINVAL; |
| 896 | |
Ville Syrjala | 7572a1e | 2008-07-23 21:31:28 -0700 | [diff] [blame] | 897 | if (err || !info->fbops->fb_pan_display || |
Florian Tobias Schandinat | 99e9e7d | 2009-09-22 16:47:41 -0700 | [diff] [blame] | 898 | var->yoffset > info->var.yres_virtual - yres || |
| 899 | var->xoffset > info->var.xres_virtual - info->var.xres) |
Antonino A. Daplas | 1207069 | 2005-12-12 22:17:17 -0800 | [diff] [blame] | 900 | return -EINVAL; |
| 901 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | if ((err = info->fbops->fb_pan_display(var, info))) |
| 903 | return err; |
James Hogan | c9c62dc | 2010-10-27 15:33:27 -0700 | [diff] [blame] | 904 | info->var.xoffset = var->xoffset; |
| 905 | info->var.yoffset = var->yoffset; |
| 906 | if (var->vmode & FB_VMODE_YWRAP) |
| 907 | info->var.vmode |= FB_VMODE_YWRAP; |
| 908 | else |
| 909 | info->var.vmode &= ~FB_VMODE_YWRAP; |
| 910 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | } |
| 912 | |
Antonino A. Daplas | 38a3dc5 | 2007-05-08 00:39:37 -0700 | [diff] [blame] | 913 | static int fb_check_caps(struct fb_info *info, struct fb_var_screeninfo *var, |
| 914 | u32 activate) |
| 915 | { |
| 916 | struct fb_event event; |
| 917 | struct fb_blit_caps caps, fbcaps; |
| 918 | int err = 0; |
| 919 | |
| 920 | memset(&caps, 0, sizeof(caps)); |
| 921 | memset(&fbcaps, 0, sizeof(fbcaps)); |
| 922 | caps.flags = (activate & FB_ACTIVATE_ALL) ? 1 : 0; |
| 923 | event.info = info; |
| 924 | event.data = ∩︀ |
| 925 | fb_notifier_call_chain(FB_EVENT_GET_REQ, &event); |
| 926 | info->fbops->fb_get_caps(info, &fbcaps, var); |
| 927 | |
| 928 | if (((fbcaps.x ^ caps.x) & caps.x) || |
| 929 | ((fbcaps.y ^ caps.y) & caps.y) || |
| 930 | (fbcaps.len < caps.len)) |
| 931 | err = -EINVAL; |
| 932 | |
| 933 | return err; |
| 934 | } |
| 935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | int |
| 937 | fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) |
| 938 | { |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 939 | int flags = info->flags; |
| 940 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
| 942 | if (var->activate & FB_ACTIVATE_INV_MODE) { |
| 943 | struct fb_videomode mode1, mode2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | |
| 945 | fb_var_to_videomode(&mode1, var); |
| 946 | fb_var_to_videomode(&mode2, &info->var); |
| 947 | /* make sure we don't delete the videomode of current var */ |
| 948 | ret = fb_mode_is_equal(&mode1, &mode2); |
| 949 | |
| 950 | if (!ret) { |
| 951 | struct fb_event event; |
| 952 | |
| 953 | event.info = info; |
| 954 | event.data = &mode1; |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 955 | ret = fb_notifier_call_chain(FB_EVENT_MODE_DELETE, &event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | if (!ret) |
| 959 | fb_delete_videomode(&mode1, &info->modelist); |
| 960 | |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 961 | |
| 962 | ret = (ret) ? -EINVAL : 0; |
| 963 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | } |
| 965 | |
| 966 | if ((var->activate & FB_ACTIVATE_FORCE) || |
| 967 | memcmp(&info->var, var, sizeof(struct fb_var_screeninfo))) { |
Antonino A. Daplas | 4941cb7 | 2007-05-08 00:39:22 -0700 | [diff] [blame] | 968 | u32 activate = var->activate; |
| 969 | |
Laurent Pinchart | fb21c2f | 2011-12-13 14:02:26 +0100 | [diff] [blame] | 970 | /* When using FOURCC mode, make sure the red, green, blue and |
| 971 | * transp fields are set to 0. |
| 972 | */ |
| 973 | if ((info->fix.capabilities & FB_CAP_FOURCC) && |
| 974 | var->grayscale > 1) { |
| 975 | if (var->red.offset || var->green.offset || |
| 976 | var->blue.offset || var->transp.offset || |
| 977 | var->red.length || var->green.length || |
| 978 | var->blue.length || var->transp.length || |
| 979 | var->red.msb_right || var->green.msb_right || |
| 980 | var->blue.msb_right || var->transp.msb_right) |
| 981 | return -EINVAL; |
| 982 | } |
| 983 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | if (!info->fbops->fb_check_var) { |
| 985 | *var = info->var; |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 986 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | } |
| 988 | |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 989 | ret = info->fbops->fb_check_var(var, info); |
| 990 | |
| 991 | if (ret) |
| 992 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | |
| 994 | if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { |
Florian Tobias Schandinat | 0fcf6ad | 2009-09-22 16:47:44 -0700 | [diff] [blame] | 995 | struct fb_var_screeninfo old_var; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | struct fb_videomode mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | |
Antonino A. Daplas | 38a3dc5 | 2007-05-08 00:39:37 -0700 | [diff] [blame] | 998 | if (info->fbops->fb_get_caps) { |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 999 | ret = fb_check_caps(info, var, activate); |
Antonino A. Daplas | 38a3dc5 | 2007-05-08 00:39:37 -0700 | [diff] [blame] | 1000 | |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 1001 | if (ret) |
Antonino A. Daplas | 38a3dc5 | 2007-05-08 00:39:37 -0700 | [diff] [blame] | 1002 | goto done; |
| 1003 | } |
| 1004 | |
Florian Tobias Schandinat | 0fcf6ad | 2009-09-22 16:47:44 -0700 | [diff] [blame] | 1005 | old_var = info->var; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | info->var = *var; |
Antonino A. Daplas | 38a3dc5 | 2007-05-08 00:39:37 -0700 | [diff] [blame] | 1007 | |
Florian Tobias Schandinat | 0fcf6ad | 2009-09-22 16:47:44 -0700 | [diff] [blame] | 1008 | if (info->fbops->fb_set_par) { |
| 1009 | ret = info->fbops->fb_set_par(info); |
| 1010 | |
| 1011 | if (ret) { |
| 1012 | info->var = old_var; |
| 1013 | printk(KERN_WARNING "detected " |
| 1014 | "fb_set_par error, " |
| 1015 | "error code: %d\n", ret); |
| 1016 | goto done; |
| 1017 | } |
| 1018 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
| 1020 | fb_pan_display(info, &info->var); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | fb_set_cmap(&info->cmap, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | fb_var_to_videomode(&mode, &info->var); |
| 1023 | |
| 1024 | if (info->modelist.prev && info->modelist.next && |
| 1025 | !list_empty(&info->modelist)) |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 1026 | ret = fb_add_videomode(&mode, &info->modelist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 1028 | if (!ret && (flags & FBINFO_MISC_USEREVENT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | struct fb_event event; |
Antonino A. Daplas | 4941cb7 | 2007-05-08 00:39:22 -0700 | [diff] [blame] | 1030 | int evnt = (activate & FB_ACTIVATE_ALL) ? |
Antonino A. Daplas | 7726e9e | 2005-09-09 13:04:29 -0700 | [diff] [blame] | 1031 | FB_EVENT_MODE_CHANGE_ALL : |
| 1032 | FB_EVENT_MODE_CHANGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | |
| 1034 | info->flags &= ~FBINFO_MISC_USEREVENT; |
| 1035 | event.info = info; |
Eric Miao | faa312d | 2008-08-29 04:18:43 +0800 | [diff] [blame] | 1036 | event.data = &mode; |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 1037 | fb_notifier_call_chain(evnt, &event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | } |
| 1039 | } |
| 1040 | } |
Antonino A. Daplas | 38a3dc5 | 2007-05-08 00:39:37 -0700 | [diff] [blame] | 1041 | |
| 1042 | done: |
Antonino A. Daplas | b1e7223 | 2007-05-08 00:39:52 -0700 | [diff] [blame] | 1043 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | int |
| 1047 | fb_blank(struct fb_info *info, int blank) |
| 1048 | { |
Inki Dae | bf05929 | 2012-05-29 15:07:12 -0700 | [diff] [blame] | 1049 | struct fb_event event; |
| 1050 | int ret = -EINVAL, early_ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
| 1052 | if (blank > FB_BLANK_POWERDOWN) |
| 1053 | blank = FB_BLANK_POWERDOWN; |
| 1054 | |
Inki Dae | bf05929 | 2012-05-29 15:07:12 -0700 | [diff] [blame] | 1055 | event.info = info; |
| 1056 | event.data = ␣ |
| 1057 | |
| 1058 | early_ret = fb_notifier_call_chain(FB_EARLY_EVENT_BLANK, &event); |
| 1059 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | if (info->fbops->fb_blank) |
| 1061 | ret = info->fbops->fb_blank(blank, info); |
| 1062 | |
Inki Dae | bf05929 | 2012-05-29 15:07:12 -0700 | [diff] [blame] | 1063 | if (!ret) |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 1064 | fb_notifier_call_chain(FB_EVENT_BLANK, &event); |
Inki Dae | bf05929 | 2012-05-29 15:07:12 -0700 | [diff] [blame] | 1065 | else { |
| 1066 | /* |
| 1067 | * if fb_blank is failed then revert effects of |
| 1068 | * the early blank event. |
| 1069 | */ |
| 1070 | if (!early_ret) |
| 1071 | fb_notifier_call_chain(FB_R_EARLY_EVENT_BLANK, &event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | } |
| 1073 | |
| 1074 | return ret; |
| 1075 | } |
| 1076 | |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1077 | static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, |
| 1078 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | { |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1080 | struct fb_ops *fb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | struct fb_var_screeninfo var; |
| 1082 | struct fb_fix_screeninfo fix; |
| 1083 | struct fb_con2fbmap con2fb; |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1084 | struct fb_cmap cmap_from; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | struct fb_cmap_user cmap; |
| 1086 | struct fb_event event; |
| 1087 | void __user *argp = (void __user *)arg; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1088 | long ret = 0; |
| 1089 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | switch (cmd) { |
| 1091 | case FBIOGET_VSCREENINFO: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1092 | if (!lock_fb_info(info)) |
| 1093 | return -ENODEV; |
| 1094 | var = info->var; |
| 1095 | unlock_fb_info(info); |
| 1096 | |
| 1097 | ret = copy_to_user(argp, &var, sizeof(var)) ? -EFAULT : 0; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1098 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | case FBIOPUT_VSCREENINFO: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1100 | if (copy_from_user(&var, argp, sizeof(var))) |
| 1101 | return -EFAULT; |
| 1102 | if (!lock_fb_info(info)) |
| 1103 | return -ENODEV; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1104 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | info->flags |= FBINFO_MISC_USEREVENT; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1106 | ret = fb_set_var(info, &var); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | info->flags &= ~FBINFO_MISC_USEREVENT; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1108 | console_unlock(); |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1109 | unlock_fb_info(info); |
| 1110 | if (!ret && copy_to_user(argp, &var, sizeof(var))) |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1111 | ret = -EFAULT; |
| 1112 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | case FBIOGET_FSCREENINFO: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1114 | if (!lock_fb_info(info)) |
| 1115 | return -ENODEV; |
| 1116 | fix = info->fix; |
| 1117 | unlock_fb_info(info); |
| 1118 | |
| 1119 | ret = copy_to_user(argp, &fix, sizeof(fix)) ? -EFAULT : 0; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1120 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | case FBIOPUTCMAP: |
| 1122 | if (copy_from_user(&cmap, argp, sizeof(cmap))) |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1123 | return -EFAULT; |
| 1124 | ret = fb_set_user_cmap(&cmap, info); |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1125 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | case FBIOGETCMAP: |
| 1127 | if (copy_from_user(&cmap, argp, sizeof(cmap))) |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1128 | return -EFAULT; |
| 1129 | if (!lock_fb_info(info)) |
| 1130 | return -ENODEV; |
| 1131 | cmap_from = info->cmap; |
| 1132 | unlock_fb_info(info); |
| 1133 | ret = fb_cmap_to_user(&cmap_from, &cmap); |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1134 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | case FBIOPAN_DISPLAY: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1136 | if (copy_from_user(&var, argp, sizeof(var))) |
| 1137 | return -EFAULT; |
| 1138 | if (!lock_fb_info(info)) |
| 1139 | return -ENODEV; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1140 | console_lock(); |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1141 | ret = fb_pan_display(info, &var); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1142 | console_unlock(); |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1143 | unlock_fb_info(info); |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1144 | if (ret == 0 && copy_to_user(argp, &var, sizeof(var))) |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1145 | return -EFAULT; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1146 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | case FBIO_CURSOR: |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1148 | ret = -EINVAL; |
| 1149 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | case FBIOGET_CON2FBMAP: |
| 1151 | if (copy_from_user(&con2fb, argp, sizeof(con2fb))) |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1152 | return -EFAULT; |
| 1153 | if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) |
| 1154 | return -EINVAL; |
| 1155 | con2fb.framebuffer = -1; |
| 1156 | event.data = &con2fb; |
Andrea Righi | 513adb5 | 2009-04-13 14:39:39 -0700 | [diff] [blame] | 1157 | if (!lock_fb_info(info)) |
| 1158 | return -ENODEV; |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1159 | event.info = info; |
| 1160 | fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event); |
Andrea Righi | 513adb5 | 2009-04-13 14:39:39 -0700 | [diff] [blame] | 1161 | unlock_fb_info(info); |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1162 | ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1163 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | case FBIOPUT_CON2FBMAP: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1165 | if (copy_from_user(&con2fb, argp, sizeof(con2fb))) |
| 1166 | return -EFAULT; |
| 1167 | if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) |
| 1168 | return -EINVAL; |
| 1169 | if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) |
| 1170 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | if (!registered_fb[con2fb.framebuffer]) |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1172 | request_module("fb%d", con2fb.framebuffer); |
| 1173 | if (!registered_fb[con2fb.framebuffer]) { |
| 1174 | ret = -EINVAL; |
| 1175 | break; |
| 1176 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | event.data = &con2fb; |
Andrea Righi | 513adb5 | 2009-04-13 14:39:39 -0700 | [diff] [blame] | 1178 | if (!lock_fb_info(info)) |
| 1179 | return -ENODEV; |
Dave Airlie | 054430e | 2013-01-25 11:38:56 +1000 | [diff] [blame] | 1180 | console_lock(); |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1181 | event.info = info; |
Andrea Righi | 66c1ca0 | 2009-03-31 15:25:18 -0700 | [diff] [blame] | 1182 | ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event); |
Dave Airlie | 054430e | 2013-01-25 11:38:56 +1000 | [diff] [blame] | 1183 | console_unlock(); |
Andrea Righi | 513adb5 | 2009-04-13 14:39:39 -0700 | [diff] [blame] | 1184 | unlock_fb_info(info); |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1185 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | case FBIOBLANK: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1187 | if (!lock_fb_info(info)) |
| 1188 | return -ENODEV; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1189 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | info->flags |= FBINFO_MISC_USEREVENT; |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1191 | ret = fb_blank(info, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | info->flags &= ~FBINFO_MISC_USEREVENT; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1193 | console_unlock(); |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1194 | unlock_fb_info(info); |
| 1195 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | default: |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1197 | if (!lock_fb_info(info)) |
| 1198 | return -ENODEV; |
| 1199 | fb = info->fbops; |
| 1200 | if (fb->fb_ioctl) |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1201 | ret = fb->fb_ioctl(info, cmd, arg); |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1202 | else |
| 1203 | ret = -ENOTTY; |
| 1204 | unlock_fb_info(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | } |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1206 | return ret; |
| 1207 | } |
| 1208 | |
| 1209 | static long fb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1210 | { |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1211 | struct fb_info *info = file_fb_info(file); |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1212 | |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1213 | if (!info) |
| 1214 | return -ENODEV; |
Andrea Righi | 1f5e31d | 2009-02-04 15:12:03 -0800 | [diff] [blame] | 1215 | return do_fb_ioctl(info, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | } |
| 1217 | |
| 1218 | #ifdef CONFIG_COMPAT |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1219 | struct fb_fix_screeninfo32 { |
| 1220 | char id[16]; |
| 1221 | compat_caddr_t smem_start; |
| 1222 | u32 smem_len; |
| 1223 | u32 type; |
| 1224 | u32 type_aux; |
| 1225 | u32 visual; |
| 1226 | u16 xpanstep; |
| 1227 | u16 ypanstep; |
| 1228 | u16 ywrapstep; |
| 1229 | u32 line_length; |
| 1230 | compat_caddr_t mmio_start; |
| 1231 | u32 mmio_len; |
| 1232 | u32 accel; |
| 1233 | u16 reserved[3]; |
| 1234 | }; |
| 1235 | |
| 1236 | struct fb_cmap32 { |
| 1237 | u32 start; |
| 1238 | u32 len; |
| 1239 | compat_caddr_t red; |
| 1240 | compat_caddr_t green; |
| 1241 | compat_caddr_t blue; |
| 1242 | compat_caddr_t transp; |
| 1243 | }; |
| 1244 | |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1245 | static int fb_getput_cmap(struct fb_info *info, unsigned int cmd, |
| 1246 | unsigned long arg) |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1247 | { |
| 1248 | struct fb_cmap_user __user *cmap; |
| 1249 | struct fb_cmap32 __user *cmap32; |
| 1250 | __u32 data; |
| 1251 | int err; |
| 1252 | |
| 1253 | cmap = compat_alloc_user_space(sizeof(*cmap)); |
| 1254 | cmap32 = compat_ptr(arg); |
| 1255 | |
| 1256 | if (copy_in_user(&cmap->start, &cmap32->start, 2 * sizeof(__u32))) |
| 1257 | return -EFAULT; |
| 1258 | |
| 1259 | if (get_user(data, &cmap32->red) || |
| 1260 | put_user(compat_ptr(data), &cmap->red) || |
| 1261 | get_user(data, &cmap32->green) || |
| 1262 | put_user(compat_ptr(data), &cmap->green) || |
| 1263 | get_user(data, &cmap32->blue) || |
| 1264 | put_user(compat_ptr(data), &cmap->blue) || |
| 1265 | get_user(data, &cmap32->transp) || |
| 1266 | put_user(compat_ptr(data), &cmap->transp)) |
| 1267 | return -EFAULT; |
| 1268 | |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1269 | err = do_fb_ioctl(info, cmd, (unsigned long) cmap); |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1270 | |
| 1271 | if (!err) { |
| 1272 | if (copy_in_user(&cmap32->start, |
| 1273 | &cmap->start, |
| 1274 | 2 * sizeof(__u32))) |
| 1275 | err = -EFAULT; |
| 1276 | } |
| 1277 | return err; |
| 1278 | } |
| 1279 | |
| 1280 | static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix, |
| 1281 | struct fb_fix_screeninfo32 __user *fix32) |
| 1282 | { |
| 1283 | __u32 data; |
| 1284 | int err; |
| 1285 | |
| 1286 | err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id)); |
| 1287 | |
| 1288 | data = (__u32) (unsigned long) fix->smem_start; |
| 1289 | err |= put_user(data, &fix32->smem_start); |
| 1290 | |
| 1291 | err |= put_user(fix->smem_len, &fix32->smem_len); |
| 1292 | err |= put_user(fix->type, &fix32->type); |
| 1293 | err |= put_user(fix->type_aux, &fix32->type_aux); |
| 1294 | err |= put_user(fix->visual, &fix32->visual); |
| 1295 | err |= put_user(fix->xpanstep, &fix32->xpanstep); |
| 1296 | err |= put_user(fix->ypanstep, &fix32->ypanstep); |
| 1297 | err |= put_user(fix->ywrapstep, &fix32->ywrapstep); |
| 1298 | err |= put_user(fix->line_length, &fix32->line_length); |
| 1299 | |
| 1300 | data = (__u32) (unsigned long) fix->mmio_start; |
| 1301 | err |= put_user(data, &fix32->mmio_start); |
| 1302 | |
| 1303 | err |= put_user(fix->mmio_len, &fix32->mmio_len); |
| 1304 | err |= put_user(fix->accel, &fix32->accel); |
| 1305 | err |= copy_to_user(fix32->reserved, fix->reserved, |
| 1306 | sizeof(fix->reserved)); |
| 1307 | |
| 1308 | return err; |
| 1309 | } |
| 1310 | |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1311 | static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd, |
| 1312 | unsigned long arg) |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1313 | { |
| 1314 | mm_segment_t old_fs; |
| 1315 | struct fb_fix_screeninfo fix; |
| 1316 | struct fb_fix_screeninfo32 __user *fix32; |
| 1317 | int err; |
| 1318 | |
| 1319 | fix32 = compat_ptr(arg); |
| 1320 | |
| 1321 | old_fs = get_fs(); |
| 1322 | set_fs(KERNEL_DS); |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1323 | err = do_fb_ioctl(info, cmd, (unsigned long) &fix); |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1324 | set_fs(old_fs); |
| 1325 | |
| 1326 | if (!err) |
| 1327 | err = do_fscreeninfo_to_user(&fix, fix32); |
| 1328 | |
| 1329 | return err; |
| 1330 | } |
| 1331 | |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1332 | static long fb_compat_ioctl(struct file *file, unsigned int cmd, |
| 1333 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | { |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1335 | struct fb_info *info = file_fb_info(file); |
| 1336 | struct fb_ops *fb; |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1337 | long ret = -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1339 | if (!info) |
| 1340 | return -ENODEV; |
| 1341 | fb = info->fbops; |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1342 | switch(cmd) { |
| 1343 | case FBIOGET_VSCREENINFO: |
| 1344 | case FBIOPUT_VSCREENINFO: |
| 1345 | case FBIOPAN_DISPLAY: |
| 1346 | case FBIOGET_CON2FBMAP: |
| 1347 | case FBIOPUT_CON2FBMAP: |
| 1348 | arg = (unsigned long) compat_ptr(arg); |
| 1349 | case FBIOBLANK: |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1350 | ret = do_fb_ioctl(info, cmd, arg); |
| 1351 | break; |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1352 | |
| 1353 | case FBIOGET_FSCREENINFO: |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1354 | ret = fb_get_fscreeninfo(info, cmd, arg); |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1355 | break; |
| 1356 | |
| 1357 | case FBIOGETCMAP: |
| 1358 | case FBIOPUTCMAP: |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1359 | ret = fb_getput_cmap(info, cmd, arg); |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1360 | break; |
| 1361 | |
| 1362 | default: |
| 1363 | if (fb->fb_compat_ioctl) |
Christoph Hellwig | 67a6680 | 2006-01-14 13:21:25 -0800 | [diff] [blame] | 1364 | ret = fb->fb_compat_ioctl(info, cmd, arg); |
Arnd Bergmann | c7f82d9 | 2005-11-08 21:39:19 -0800 | [diff] [blame] | 1365 | break; |
| 1366 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | return ret; |
| 1368 | } |
| 1369 | #endif |
| 1370 | |
Antonino A. Daplas | 10eb265 | 2007-07-17 04:05:27 -0700 | [diff] [blame] | 1371 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | fb_mmap(struct file *file, struct vm_area_struct * vma) |
| 1373 | { |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1374 | struct fb_info *info = file_fb_info(file); |
| 1375 | struct fb_ops *fb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | unsigned long off; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | unsigned long start; |
| 1378 | u32 len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1380 | if (!info) |
| 1381 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) |
| 1383 | return -EINVAL; |
| 1384 | off = vma->vm_pgoff << PAGE_SHIFT; |
Linus Torvalds | c47747f | 2011-05-11 14:58:34 -0700 | [diff] [blame] | 1385 | fb = info->fbops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | if (!fb) |
| 1387 | return -ENODEV; |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1388 | mutex_lock(&info->mm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | if (fb->fb_mmap) { |
| 1390 | int res; |
Christoph Hellwig | 216d526 | 2006-01-14 13:21:25 -0800 | [diff] [blame] | 1391 | res = fb->fb_mmap(info, vma); |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1392 | mutex_unlock(&info->mm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | return res; |
| 1394 | } |
| 1395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | /* frame buffer memory */ |
| 1397 | start = info->fix.smem_start; |
| 1398 | len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.smem_len); |
| 1399 | if (off >= len) { |
| 1400 | /* memory mapped io */ |
| 1401 | off -= len; |
| 1402 | if (info->var.accel_flags) { |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1403 | mutex_unlock(&info->mm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | return -EINVAL; |
| 1405 | } |
| 1406 | start = info->fix.mmio_start; |
| 1407 | len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len); |
| 1408 | } |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1409 | mutex_unlock(&info->mm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | start &= PAGE_MASK; |
| 1411 | if ((vma->vm_end - vma->vm_start + off) > len) |
| 1412 | return -EINVAL; |
| 1413 | off += start; |
| 1414 | vma->vm_pgoff = off >> PAGE_SHIFT; |
Konstantin Khlebnikov | 314e51b | 2012-10-08 16:29:02 -0700 | [diff] [blame] | 1415 | /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by io_remap_pfn_range()*/ |
Daniel De Graaf | c07fbfd | 2010-08-10 18:02:45 -0700 | [diff] [blame] | 1416 | vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); |
Antonino A. Daplas | 10eb265 | 2007-07-17 04:05:27 -0700 | [diff] [blame] | 1417 | fb_pgprotect(file, vma, off); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, |
| 1419 | vma->vm_end - vma->vm_start, vma->vm_page_prot)) |
| 1420 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | static int |
| 1425 | fb_open(struct inode *inode, struct file *file) |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1426 | __acquires(&info->lock) |
| 1427 | __releases(&info->lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | { |
| 1429 | int fbidx = iminor(inode); |
| 1430 | struct fb_info *info; |
| 1431 | int res = 0; |
| 1432 | |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1433 | info = get_fb_info(fbidx); |
| 1434 | if (!info) { |
Johannes Berg | a65e5d7 | 2008-07-09 10:28:38 +0200 | [diff] [blame] | 1435 | request_module("fb%d", fbidx); |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1436 | info = get_fb_info(fbidx); |
| 1437 | if (!info) |
| 1438 | return -ENODEV; |
| 1439 | } |
| 1440 | if (IS_ERR(info)) |
| 1441 | return PTR_ERR(info); |
| 1442 | |
Krzysztof Helt | 3e680aa | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1443 | mutex_lock(&info->lock); |
Jonathan Corbet | fc7f687 | 2008-05-15 16:30:36 -0600 | [diff] [blame] | 1444 | if (!try_module_get(info->fbops->owner)) { |
| 1445 | res = -ENODEV; |
| 1446 | goto out; |
| 1447 | } |
Thomas Koeller | cae8a12 | 2006-01-09 20:53:48 -0800 | [diff] [blame] | 1448 | file->private_data = info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | if (info->fbops->fb_open) { |
| 1450 | res = info->fbops->fb_open(info,1); |
| 1451 | if (res) |
| 1452 | module_put(info->fbops->owner); |
| 1453 | } |
Ian Campbell | d847471 | 2008-08-20 14:09:23 -0700 | [diff] [blame] | 1454 | #ifdef CONFIG_FB_DEFERRED_IO |
| 1455 | if (info->fbdefio) |
| 1456 | fb_deferred_io_open(info, inode, file); |
| 1457 | #endif |
Jonathan Corbet | fc7f687 | 2008-05-15 16:30:36 -0600 | [diff] [blame] | 1458 | out: |
Krzysztof Helt | 3e680aa | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1459 | mutex_unlock(&info->lock); |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1460 | if (res) |
| 1461 | put_fb_info(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | return res; |
| 1463 | } |
| 1464 | |
| 1465 | static int |
| 1466 | fb_release(struct inode *inode, struct file *file) |
Geert Uytterhoeven | a684e7d | 2008-11-06 12:53:37 -0800 | [diff] [blame] | 1467 | __acquires(&info->lock) |
| 1468 | __releases(&info->lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | { |
Thomas Koeller | cae8a12 | 2006-01-09 20:53:48 -0800 | [diff] [blame] | 1470 | struct fb_info * const info = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | |
Krzysztof Helt | 3e680aa | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1472 | mutex_lock(&info->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | if (info->fbops->fb_release) |
| 1474 | info->fbops->fb_release(info,1); |
| 1475 | module_put(info->fbops->owner); |
Krzysztof Helt | 3e680aa | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1476 | mutex_unlock(&info->lock); |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1477 | put_fb_info(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | return 0; |
| 1479 | } |
| 1480 | |
Helge Deller | 0128bee | 2006-12-08 02:40:29 -0800 | [diff] [blame] | 1481 | static const struct file_operations fb_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | .owner = THIS_MODULE, |
| 1483 | .read = fb_read, |
| 1484 | .write = fb_write, |
Alan Cox | e536771 | 2008-10-18 20:27:51 -0700 | [diff] [blame] | 1485 | .unlocked_ioctl = fb_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | #ifdef CONFIG_COMPAT |
| 1487 | .compat_ioctl = fb_compat_ioctl, |
| 1488 | #endif |
| 1489 | .mmap = fb_mmap, |
| 1490 | .open = fb_open, |
| 1491 | .release = fb_release, |
| 1492 | #ifdef HAVE_ARCH_FB_UNMAPPED_AREA |
| 1493 | .get_unmapped_area = get_fb_unmapped_area, |
| 1494 | #endif |
Paul Mundt | 5e841b8 | 2007-05-08 00:37:41 -0700 | [diff] [blame] | 1495 | #ifdef CONFIG_FB_DEFERRED_IO |
| 1496 | .fsync = fb_deferred_io_fsync, |
| 1497 | #endif |
Arnd Bergmann | 6038f37 | 2010-08-15 18:52:59 +0200 | [diff] [blame] | 1498 | .llseek = default_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | }; |
| 1500 | |
Antonino A. Daplas | 9a17917 | 2006-06-26 00:27:05 -0700 | [diff] [blame] | 1501 | struct class *fb_class; |
| 1502 | EXPORT_SYMBOL(fb_class); |
Anton Vorontsov | e4c690e | 2008-04-28 02:14:49 -0700 | [diff] [blame] | 1503 | |
| 1504 | static int fb_check_foreignness(struct fb_info *fi) |
| 1505 | { |
| 1506 | const bool foreign_endian = fi->flags & FBINFO_FOREIGN_ENDIAN; |
| 1507 | |
| 1508 | fi->flags &= ~FBINFO_FOREIGN_ENDIAN; |
| 1509 | |
| 1510 | #ifdef __BIG_ENDIAN |
| 1511 | fi->flags |= foreign_endian ? 0 : FBINFO_BE_MATH; |
| 1512 | #else |
| 1513 | fi->flags |= foreign_endian ? FBINFO_BE_MATH : 0; |
| 1514 | #endif /* __BIG_ENDIAN */ |
| 1515 | |
| 1516 | if (fi->flags & FBINFO_BE_MATH && !fb_be_math(fi)) { |
| 1517 | pr_err("%s: enable CONFIG_FB_BIG_ENDIAN to " |
| 1518 | "support this framebuffer\n", fi->fix.id); |
| 1519 | return -ENOSYS; |
| 1520 | } else if (!(fi->flags & FBINFO_BE_MATH) && fb_be_math(fi)) { |
| 1521 | pr_err("%s: enable CONFIG_FB_LITTLE_ENDIAN to " |
| 1522 | "support this framebuffer\n", fi->fix.id); |
| 1523 | return -ENOSYS; |
| 1524 | } |
| 1525 | |
| 1526 | return 0; |
| 1527 | } |
| 1528 | |
Marcin Slusarz | 1471ca9 | 2010-05-16 17:27:03 +0200 | [diff] [blame] | 1529 | static bool apertures_overlap(struct aperture *gen, struct aperture *hw) |
Dave Airlie | 4410f39 | 2009-06-16 15:34:38 -0700 | [diff] [blame] | 1530 | { |
| 1531 | /* is the generic aperture base the same as the HW one */ |
Marcin Slusarz | 1471ca9 | 2010-05-16 17:27:03 +0200 | [diff] [blame] | 1532 | if (gen->base == hw->base) |
Dave Airlie | 4410f39 | 2009-06-16 15:34:38 -0700 | [diff] [blame] | 1533 | return true; |
| 1534 | /* is the generic aperture base inside the hw base->hw base+size */ |
Dave Airlie | acd0acb | 2010-12-21 01:41:15 +0000 | [diff] [blame] | 1535 | if (gen->base > hw->base && gen->base < hw->base + hw->size) |
Dave Airlie | 4410f39 | 2009-06-16 15:34:38 -0700 | [diff] [blame] | 1536 | return true; |
| 1537 | return false; |
| 1538 | } |
Marcin Slusarz | 1471ca9 | 2010-05-16 17:27:03 +0200 | [diff] [blame] | 1539 | |
Marcin Slusarz | 06415c5 | 2010-05-16 17:29:56 +0200 | [diff] [blame] | 1540 | static bool fb_do_apertures_overlap(struct apertures_struct *gena, |
| 1541 | struct apertures_struct *hwa) |
Marcin Slusarz | 1471ca9 | 2010-05-16 17:27:03 +0200 | [diff] [blame] | 1542 | { |
| 1543 | int i, j; |
Marcin Slusarz | 1471ca9 | 2010-05-16 17:27:03 +0200 | [diff] [blame] | 1544 | if (!hwa || !gena) |
| 1545 | return false; |
| 1546 | |
| 1547 | for (i = 0; i < hwa->count; ++i) { |
| 1548 | struct aperture *h = &hwa->ranges[i]; |
| 1549 | for (j = 0; j < gena->count; ++j) { |
| 1550 | struct aperture *g = &gena->ranges[j]; |
| 1551 | printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n", |
Randy Dunlap | f4b87de | 2010-05-21 12:44:47 -0700 | [diff] [blame] | 1552 | (unsigned long long)g->base, |
| 1553 | (unsigned long long)g->size, |
| 1554 | (unsigned long long)h->base, |
| 1555 | (unsigned long long)h->size); |
Marcin Slusarz | 1471ca9 | 2010-05-16 17:27:03 +0200 | [diff] [blame] | 1556 | if (apertures_overlap(g, h)) |
| 1557 | return true; |
| 1558 | } |
| 1559 | } |
| 1560 | |
| 1561 | return false; |
| 1562 | } |
| 1563 | |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1564 | static int do_unregister_framebuffer(struct fb_info *fb_info); |
| 1565 | |
Marcin Slusarz | 3b9676e | 2010-05-16 17:33:09 +0200 | [diff] [blame] | 1566 | #define VGA_FB_PHYS 0xA0000 |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1567 | static void do_remove_conflicting_framebuffers(struct apertures_struct *a, |
Marcin Slusarz | 3b9676e | 2010-05-16 17:33:09 +0200 | [diff] [blame] | 1568 | const char *name, bool primary) |
Marcin Slusarz | 06415c5 | 2010-05-16 17:29:56 +0200 | [diff] [blame] | 1569 | { |
| 1570 | int i; |
| 1571 | |
| 1572 | /* check all firmware fbs and kick off if the base addr overlaps */ |
| 1573 | for (i = 0 ; i < FB_MAX; i++) { |
Marcin Slusarz | 3b9676e | 2010-05-16 17:33:09 +0200 | [diff] [blame] | 1574 | struct apertures_struct *gen_aper; |
Marcin Slusarz | 06415c5 | 2010-05-16 17:29:56 +0200 | [diff] [blame] | 1575 | if (!registered_fb[i]) |
| 1576 | continue; |
| 1577 | |
| 1578 | if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE)) |
| 1579 | continue; |
| 1580 | |
Marcin Slusarz | 3b9676e | 2010-05-16 17:33:09 +0200 | [diff] [blame] | 1581 | gen_aper = registered_fb[i]->apertures; |
| 1582 | if (fb_do_apertures_overlap(gen_aper, a) || |
| 1583 | (primary && gen_aper && gen_aper->count && |
| 1584 | gen_aper->ranges[0].base == VGA_FB_PHYS)) { |
| 1585 | |
Matthew Garrett | 47c87d9 | 2011-04-04 21:39:54 +0000 | [diff] [blame] | 1586 | printk(KERN_INFO "fb: conflicting fb hw usage " |
Marcin Slusarz | 06415c5 | 2010-05-16 17:29:56 +0200 | [diff] [blame] | 1587 | "%s vs %s - removing generic driver\n", |
| 1588 | name, registered_fb[i]->fix.id); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1589 | do_unregister_framebuffer(registered_fb[i]); |
Marcin Slusarz | 06415c5 | 2010-05-16 17:29:56 +0200 | [diff] [blame] | 1590 | } |
| 1591 | } |
| 1592 | } |
Marcin Slusarz | 06415c5 | 2010-05-16 17:29:56 +0200 | [diff] [blame] | 1593 | |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1594 | static int do_register_framebuffer(struct fb_info *fb_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | { |
| 1596 | int i; |
| 1597 | struct fb_event event; |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 1598 | struct fb_videomode mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | |
Anton Vorontsov | e4c690e | 2008-04-28 02:14:49 -0700 | [diff] [blame] | 1600 | if (fb_check_foreignness(fb_info)) |
| 1601 | return -ENOSYS; |
| 1602 | |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1603 | do_remove_conflicting_framebuffers(fb_info->apertures, fb_info->fix.id, |
Marcin Slusarz | 3b9676e | 2010-05-16 17:33:09 +0200 | [diff] [blame] | 1604 | fb_is_primary_device(fb_info)); |
Dave Airlie | 4410f39 | 2009-06-16 15:34:38 -0700 | [diff] [blame] | 1605 | |
Bruno Prémont | c590cec | 2011-05-14 12:24:15 +0200 | [diff] [blame] | 1606 | if (num_registered_fb == FB_MAX) |
| 1607 | return -ENXIO; |
| 1608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | num_registered_fb++; |
| 1610 | for (i = 0 ; i < FB_MAX; i++) |
| 1611 | if (!registered_fb[i]) |
| 1612 | break; |
| 1613 | fb_info->node = i; |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1614 | atomic_set(&fb_info->count, 1); |
Linus Torvalds | 6c96895 | 2009-07-08 09:20:11 -0700 | [diff] [blame] | 1615 | mutex_init(&fb_info->lock); |
| 1616 | mutex_init(&fb_info->mm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | |
Greg Kroah-Hartman | 77997aa | 2008-07-21 20:03:34 -0700 | [diff] [blame] | 1618 | fb_info->dev = device_create(fb_class, fb_info->device, |
| 1619 | MKDEV(FB_MAJOR, i), NULL, "fb%d", i); |
Greg Kroah-Hartman | 78cde0887 | 2006-09-14 07:30:59 -0700 | [diff] [blame] | 1620 | if (IS_ERR(fb_info->dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | /* Not fatal */ |
Greg Kroah-Hartman | 78cde0887 | 2006-09-14 07:30:59 -0700 | [diff] [blame] | 1622 | printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev)); |
| 1623 | fb_info->dev = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | } else |
Greg Kroah-Hartman | 78cde0887 | 2006-09-14 07:30:59 -0700 | [diff] [blame] | 1625 | fb_init_device(fb_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | |
| 1627 | if (fb_info->pixmap.addr == NULL) { |
| 1628 | fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL); |
| 1629 | if (fb_info->pixmap.addr) { |
| 1630 | fb_info->pixmap.size = FBPIXMAPSIZE; |
| 1631 | fb_info->pixmap.buf_align = 1; |
| 1632 | fb_info->pixmap.scan_align = 1; |
James Simmons | 58a6064 | 2005-06-21 17:17:08 -0700 | [diff] [blame] | 1633 | fb_info->pixmap.access_align = 32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | fb_info->pixmap.flags = FB_PIXMAP_DEFAULT; |
| 1635 | } |
| 1636 | } |
| 1637 | fb_info->pixmap.offset = 0; |
| 1638 | |
Antonino A. Daplas | bf26ad7 | 2007-05-08 00:39:09 -0700 | [diff] [blame] | 1639 | if (!fb_info->pixmap.blit_x) |
| 1640 | fb_info->pixmap.blit_x = ~(u32)0; |
| 1641 | |
| 1642 | if (!fb_info->pixmap.blit_y) |
| 1643 | fb_info->pixmap.blit_y = ~(u32)0; |
| 1644 | |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 1645 | if (!fb_info->modelist.prev || !fb_info->modelist.next) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | INIT_LIST_HEAD(&fb_info->modelist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | |
Jesse Barnes | 3cf2667 | 2013-02-04 13:37:21 +0000 | [diff] [blame^] | 1648 | if (fb_info->skip_vt_switch) |
| 1649 | pm_vt_switch_required(fb_info->dev, false); |
| 1650 | else |
| 1651 | pm_vt_switch_required(fb_info->dev, true); |
| 1652 | |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 1653 | fb_var_to_videomode(&mode, &fb_info->var); |
| 1654 | fb_add_videomode(&mode, &fb_info->modelist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | registered_fb[i] = fb_info; |
| 1656 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | event.info = fb_info; |
Andrea Righi | 513adb5 | 2009-04-13 14:39:39 -0700 | [diff] [blame] | 1658 | if (!lock_fb_info(fb_info)) |
| 1659 | return -ENODEV; |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 1660 | console_lock(); |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 1661 | fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event); |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 1662 | console_unlock(); |
Andrea Righi | 513adb5 | 2009-04-13 14:39:39 -0700 | [diff] [blame] | 1663 | unlock_fb_info(fb_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | return 0; |
| 1665 | } |
| 1666 | |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1667 | static int do_unregister_framebuffer(struct fb_info *fb_info) |
| 1668 | { |
| 1669 | struct fb_event event; |
| 1670 | int i, ret = 0; |
| 1671 | |
| 1672 | i = fb_info->node; |
Bruno Prémont | c590cec | 2011-05-14 12:24:15 +0200 | [diff] [blame] | 1673 | if (i < 0 || i >= FB_MAX || registered_fb[i] != fb_info) |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1674 | return -EINVAL; |
| 1675 | |
| 1676 | if (!lock_fb_info(fb_info)) |
| 1677 | return -ENODEV; |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 1678 | console_lock(); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1679 | event.info = fb_info; |
| 1680 | ret = fb_notifier_call_chain(FB_EVENT_FB_UNBIND, &event); |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 1681 | console_unlock(); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1682 | unlock_fb_info(fb_info); |
| 1683 | |
| 1684 | if (ret) |
| 1685 | return -EINVAL; |
| 1686 | |
Jesse Barnes | 3cf2667 | 2013-02-04 13:37:21 +0000 | [diff] [blame^] | 1687 | pm_vt_switch_unregister(fb_info->dev); |
| 1688 | |
Kay Sievers | ce880cb | 2012-01-28 19:57:46 +0000 | [diff] [blame] | 1689 | unlink_framebuffer(fb_info); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1690 | if (fb_info->pixmap.addr && |
| 1691 | (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT)) |
| 1692 | kfree(fb_info->pixmap.addr); |
| 1693 | fb_destroy_modelist(&fb_info->modelist); |
| 1694 | registered_fb[i] = NULL; |
| 1695 | num_registered_fb--; |
| 1696 | fb_cleanup_device(fb_info); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1697 | event.info = fb_info; |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 1698 | console_lock(); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1699 | fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event); |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 1700 | console_unlock(); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1701 | |
| 1702 | /* this may free fb info */ |
| 1703 | put_fb_info(fb_info); |
| 1704 | return 0; |
| 1705 | } |
| 1706 | |
Kay Sievers | ce880cb | 2012-01-28 19:57:46 +0000 | [diff] [blame] | 1707 | int unlink_framebuffer(struct fb_info *fb_info) |
| 1708 | { |
| 1709 | int i; |
| 1710 | |
| 1711 | i = fb_info->node; |
| 1712 | if (i < 0 || i >= FB_MAX || registered_fb[i] != fb_info) |
| 1713 | return -EINVAL; |
| 1714 | |
| 1715 | if (fb_info->dev) { |
| 1716 | device_destroy(fb_class, MKDEV(FB_MAJOR, i)); |
| 1717 | fb_info->dev = NULL; |
| 1718 | } |
| 1719 | return 0; |
| 1720 | } |
| 1721 | EXPORT_SYMBOL(unlink_framebuffer); |
| 1722 | |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1723 | void remove_conflicting_framebuffers(struct apertures_struct *a, |
| 1724 | const char *name, bool primary) |
| 1725 | { |
| 1726 | mutex_lock(®istration_lock); |
| 1727 | do_remove_conflicting_framebuffers(a, name, primary); |
| 1728 | mutex_unlock(®istration_lock); |
| 1729 | } |
| 1730 | EXPORT_SYMBOL(remove_conflicting_framebuffers); |
| 1731 | |
| 1732 | /** |
| 1733 | * register_framebuffer - registers a frame buffer device |
| 1734 | * @fb_info: frame buffer info structure |
| 1735 | * |
| 1736 | * Registers a frame buffer device @fb_info. |
| 1737 | * |
| 1738 | * Returns negative errno on error, or zero for success. |
| 1739 | * |
| 1740 | */ |
| 1741 | int |
| 1742 | register_framebuffer(struct fb_info *fb_info) |
| 1743 | { |
| 1744 | int ret; |
| 1745 | |
| 1746 | mutex_lock(®istration_lock); |
| 1747 | ret = do_register_framebuffer(fb_info); |
| 1748 | mutex_unlock(®istration_lock); |
| 1749 | |
| 1750 | return ret; |
| 1751 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | |
| 1753 | /** |
| 1754 | * unregister_framebuffer - releases a frame buffer device |
| 1755 | * @fb_info: frame buffer info structure |
| 1756 | * |
| 1757 | * Unregisters a frame buffer device @fb_info. |
| 1758 | * |
| 1759 | * Returns negative errno on error, or zero for success. |
| 1760 | * |
Jesse Barnes | cfafca8 | 2007-07-17 04:05:33 -0700 | [diff] [blame] | 1761 | * This function will also notify the framebuffer console |
| 1762 | * to release the driver. |
| 1763 | * |
| 1764 | * This is meant to be called within a driver's module_exit() |
| 1765 | * function. If this is called outside module_exit(), ensure |
| 1766 | * that the driver implements fb_open() and fb_release() to |
| 1767 | * check that no processes are using the device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | int |
| 1770 | unregister_framebuffer(struct fb_info *fb_info) |
| 1771 | { |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1772 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1774 | mutex_lock(®istration_lock); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1775 | ret = do_unregister_framebuffer(fb_info); |
Linus Torvalds | 698b368 | 2011-05-11 14:49:36 -0700 | [diff] [blame] | 1776 | mutex_unlock(®istration_lock); |
Linus Torvalds | 712f314 | 2011-05-13 16:16:41 -0700 | [diff] [blame] | 1777 | |
Jesse Barnes | cfafca8 | 2007-07-17 04:05:33 -0700 | [diff] [blame] | 1778 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | } |
| 1780 | |
| 1781 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | * fb_set_suspend - low level driver signals suspend |
| 1783 | * @info: framebuffer affected |
| 1784 | * @state: 0 = resuming, !=0 = suspending |
| 1785 | * |
| 1786 | * This is meant to be used by low level drivers to |
| 1787 | * signal suspend/resume to the core & clients. |
| 1788 | * It must be called with the console semaphore held |
| 1789 | */ |
| 1790 | void fb_set_suspend(struct fb_info *info, int state) |
| 1791 | { |
| 1792 | struct fb_event event; |
| 1793 | |
| 1794 | event.info = info; |
| 1795 | if (state) { |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 1796 | fb_notifier_call_chain(FB_EVENT_SUSPEND, &event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | info->state = FBINFO_STATE_SUSPENDED; |
| 1798 | } else { |
| 1799 | info->state = FBINFO_STATE_RUNNING; |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 1800 | fb_notifier_call_chain(FB_EVENT_RESUME, &event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | } |
| 1802 | } |
| 1803 | |
| 1804 | /** |
| 1805 | * fbmem_init - init frame buffer subsystem |
| 1806 | * |
| 1807 | * Initialize the frame buffer subsystem. |
| 1808 | * |
| 1809 | * NOTE: This function is _only_ to be called by drivers/char/mem.c. |
| 1810 | * |
| 1811 | */ |
| 1812 | |
| 1813 | static int __init |
| 1814 | fbmem_init(void) |
| 1815 | { |
Alexey Dobriyan | 0aa1634 | 2008-04-28 02:15:42 -0700 | [diff] [blame] | 1816 | proc_create("fb", 0, NULL, &fb_proc_fops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | if (register_chrdev(FB_MAJOR,"fb",&fb_fops)) |
| 1819 | printk("unable to get major %d for fb devs\n", FB_MAJOR); |
| 1820 | |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1821 | fb_class = class_create(THIS_MODULE, "graphics"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | if (IS_ERR(fb_class)) { |
| 1823 | printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class)); |
| 1824 | fb_class = NULL; |
| 1825 | } |
| 1826 | return 0; |
| 1827 | } |
| 1828 | |
| 1829 | #ifdef MODULE |
| 1830 | module_init(fbmem_init); |
| 1831 | static void __exit |
| 1832 | fbmem_exit(void) |
| 1833 | { |
Alexey Dobriyan | c43f89c | 2008-04-15 14:34:33 -0700 | [diff] [blame] | 1834 | remove_proc_entry("fb", NULL); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1835 | class_destroy(fb_class); |
Jon Smirl | 5a340cc | 2005-07-27 11:46:04 -0700 | [diff] [blame] | 1836 | unregister_chrdev(FB_MAJOR, "fb"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | } |
| 1838 | |
| 1839 | module_exit(fbmem_exit); |
| 1840 | MODULE_LICENSE("GPL"); |
| 1841 | MODULE_DESCRIPTION("Framebuffer base"); |
| 1842 | #else |
| 1843 | subsys_initcall(fbmem_init); |
| 1844 | #endif |
| 1845 | |
| 1846 | int fb_new_modelist(struct fb_info *info) |
| 1847 | { |
| 1848 | struct fb_event event; |
| 1849 | struct fb_var_screeninfo var = info->var; |
| 1850 | struct list_head *pos, *n; |
| 1851 | struct fb_modelist *modelist; |
| 1852 | struct fb_videomode *m, mode; |
| 1853 | int err = 1; |
| 1854 | |
| 1855 | list_for_each_safe(pos, n, &info->modelist) { |
| 1856 | modelist = list_entry(pos, struct fb_modelist, list); |
| 1857 | m = &modelist->mode; |
| 1858 | fb_videomode_to_var(&var, m); |
| 1859 | var.activate = FB_ACTIVATE_TEST; |
| 1860 | err = fb_set_var(info, &var); |
| 1861 | fb_var_to_videomode(&mode, &var); |
| 1862 | if (err || !fb_mode_is_equal(m, &mode)) { |
| 1863 | list_del(pos); |
| 1864 | kfree(pos); |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | err = 1; |
| 1869 | |
| 1870 | if (!list_empty(&info->modelist)) { |
| 1871 | event.info = info; |
Antonino A. Daplas | 256154f | 2006-07-30 03:04:17 -0700 | [diff] [blame] | 1872 | err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | } |
| 1874 | |
| 1875 | return err; |
| 1876 | } |
| 1877 | |
Helge Deller | 0128bee | 2006-12-08 02:40:29 -0800 | [diff] [blame] | 1878 | static char *video_options[FB_MAX] __read_mostly; |
| 1879 | static int ofonly __read_mostly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | |
| 1881 | /** |
| 1882 | * fb_get_options - get kernel boot parameters |
| 1883 | * @name: framebuffer name as it would appear in |
| 1884 | * the boot parameter line |
| 1885 | * (video=<name>:<options>) |
| 1886 | * @option: the option will be stored here |
| 1887 | * |
| 1888 | * NOTE: Needed to maintain backwards compatibility |
| 1889 | */ |
| 1890 | int fb_get_options(char *name, char **option) |
| 1891 | { |
| 1892 | char *opt, *options = NULL; |
Denys Vlasenko | a67ef27 | 2010-08-10 18:02:30 -0700 | [diff] [blame] | 1893 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | int name_len = strlen(name), i; |
| 1895 | |
| 1896 | if (name_len && ofonly && strncmp(name, "offb", 4)) |
| 1897 | retval = 1; |
| 1898 | |
| 1899 | if (name_len && !retval) { |
| 1900 | for (i = 0; i < FB_MAX; i++) { |
| 1901 | if (video_options[i] == NULL) |
| 1902 | continue; |
Denys Vlasenko | a67ef27 | 2010-08-10 18:02:30 -0700 | [diff] [blame] | 1903 | if (!video_options[i][0]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | continue; |
| 1905 | opt = video_options[i]; |
| 1906 | if (!strncmp(name, opt, name_len) && |
| 1907 | opt[name_len] == ':') |
| 1908 | options = opt + name_len + 1; |
| 1909 | } |
| 1910 | } |
| 1911 | if (options && !strncmp(options, "off", 3)) |
| 1912 | retval = 1; |
| 1913 | |
| 1914 | if (option) |
| 1915 | *option = options; |
| 1916 | |
| 1917 | return retval; |
| 1918 | } |
| 1919 | |
Andrew Morton | bc6d7fd | 2006-02-11 17:56:08 -0800 | [diff] [blame] | 1920 | #ifndef MODULE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | /** |
| 1922 | * video_setup - process command line options |
| 1923 | * @options: string of options |
| 1924 | * |
| 1925 | * Process command line options for frame buffer subsystem. |
| 1926 | * |
| 1927 | * NOTE: This function is a __setup and __init function. |
| 1928 | * It only stores the options. Drivers have to call |
| 1929 | * fb_get_options() as necessary. |
| 1930 | * |
| 1931 | * Returns zero. |
| 1932 | * |
| 1933 | */ |
Adrian Bunk | 75c96f8 | 2005-05-05 16:16:09 -0700 | [diff] [blame] | 1934 | static int __init video_setup(char *options) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | { |
| 1936 | int i, global = 0; |
| 1937 | |
| 1938 | if (!options || !*options) |
| 1939 | global = 1; |
| 1940 | |
| 1941 | if (!global && !strncmp(options, "ofonly", 6)) { |
| 1942 | ofonly = 1; |
| 1943 | global = 1; |
| 1944 | } |
| 1945 | |
Dave Airlie | f803303 | 2009-09-16 20:45:09 +1000 | [diff] [blame] | 1946 | if (!global && !strchr(options, ':')) { |
Geert Uytterhoeven | 9a054fb | 2007-10-16 01:29:51 -0700 | [diff] [blame] | 1947 | fb_mode_option = options; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | global = 1; |
| 1949 | } |
| 1950 | |
| 1951 | if (!global) { |
| 1952 | for (i = 0; i < FB_MAX; i++) { |
| 1953 | if (video_options[i] == NULL) { |
| 1954 | video_options[i] = options; |
| 1955 | break; |
| 1956 | } |
| 1957 | |
| 1958 | } |
| 1959 | } |
| 1960 | |
OGAWA Hirofumi | 9b41046 | 2006-03-31 02:30:33 -0800 | [diff] [blame] | 1961 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | } |
| 1963 | __setup("video=", video_setup); |
Andrew Morton | bc6d7fd | 2006-02-11 17:56:08 -0800 | [diff] [blame] | 1964 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | |
| 1966 | /* |
| 1967 | * Visible symbols for modules |
| 1968 | */ |
| 1969 | |
| 1970 | EXPORT_SYMBOL(register_framebuffer); |
| 1971 | EXPORT_SYMBOL(unregister_framebuffer); |
| 1972 | EXPORT_SYMBOL(num_registered_fb); |
| 1973 | EXPORT_SYMBOL(registered_fb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | EXPORT_SYMBOL(fb_show_logo); |
| 1975 | EXPORT_SYMBOL(fb_set_var); |
| 1976 | EXPORT_SYMBOL(fb_blank); |
| 1977 | EXPORT_SYMBOL(fb_pan_display); |
| 1978 | EXPORT_SYMBOL(fb_get_buffer_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | EXPORT_SYMBOL(fb_set_suspend); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | EXPORT_SYMBOL(fb_get_options); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
| 1982 | MODULE_LICENSE("GPL"); |