?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
OMAP: DSS2: OMAPFB: Remove redundant color register range check
[linux-2.6/btrfs-unstable.git] / drivers / video / omap2 / omapfb / omapfb-main.c
blob4abb1d17231b2c0c393baa0d2ac8343c127fd18b
1 /*
2 * linux/drivers/video/omap2/omapfb-main.c
3 *
4 * Copyright (C) 2008 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/slab.h>
26 #include <linux/fb.h>
27 #include <linux/dma-mapping.h>
28 #include <linux/vmalloc.h>
29 #include <linux/device.h>
30 #include <linux/platform_device.h>
31 #include <linux/omapfb.h>
32
33 #include <plat/display.h>
34 #include <plat/vram.h>
35 #include <plat/vrfb.h>
36
37 #include "omapfb.h"
38
39 #define MODULE_NAME "omapfb"
40
41 #define OMAPFB_PLANE_XRES_MIN 8
42 #define OMAPFB_PLANE_YRES_MIN 8
43
44 static char *def_mode;
45 static char *def_vram;
46 static int def_vrfb;
47 static int def_rotate;
48 static int def_mirror;
49
50 #ifdef DEBUG
51 unsigned int omapfb_debug;
52 module_param_named(debug, omapfb_debug, bool, 0644);
53 static unsigned int omapfb_test_pattern;
54 module_param_named(test, omapfb_test_pattern, bool, 0644);
55 #endif
56
57 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
58 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
59 struct omap_dss_device *dssdev);
60
61 #ifdef DEBUG
62 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
63 {
64 struct fb_var_screeninfo *var = &fbi->var;
65 struct fb_fix_screeninfo *fix = &fbi->fix;
66 void __iomem *addr = fbi->screen_base;
67 const unsigned bytespp = var->bits_per_pixel >> 3;
68 const unsigned line_len = fix->line_length / bytespp;
69
70 int r = (color >> 16) & 0xff;
71 int g = (color >> 8) & 0xff;
72 int b = (color >> 0) & 0xff;
73
74 if (var->bits_per_pixel == 16) {
75 u16 __iomem *p = (u16 __iomem *)addr;
76 p += y * line_len + x;
77
78 r = r * 32 / 256;
79 g = g * 64 / 256;
80 b = b * 32 / 256;
81
82 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
83 } else if (var->bits_per_pixel == 24) {
84 u8 __iomem *p = (u8 __iomem *)addr;
85 p += (y * line_len + x) * 3;
86
87 __raw_writeb(b, p + 0);
88 __raw_writeb(g, p + 1);
89 __raw_writeb(r, p + 2);
90 } else if (var->bits_per_pixel == 32) {
91 u32 __iomem *p = (u32 __iomem *)addr;
92 p += y * line_len + x;
93 __raw_writel(color, p);
94 }
95 }
96
97 static void fill_fb(struct fb_info *fbi)
98 {
99 struct fb_var_screeninfo *var = &fbi->var;
100 const short w = var->xres_virtual;
101 const short h = var->yres_virtual;
102 void __iomem *addr = fbi->screen_base;
103 int y, x;
104
105 if (!addr)
106 return;
107
108 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
109
110 for (y = 0; y < h; y++) {
111 for (x = 0; x < w; x++) {
112 if (x < 20 && y < 20)
113 draw_pixel(fbi, x, y, 0xffffff);
114 else if (x < 20 && (y > 20 && y < h - 20))
115 draw_pixel(fbi, x, y, 0xff);
116 else if (y < 20 && (x > 20 && x < w - 20))
117 draw_pixel(fbi, x, y, 0xff00);
118 else if (x > w - 20 && (y > 20 && y < h - 20))
119 draw_pixel(fbi, x, y, 0xff0000);
120 else if (y > h - 20 && (x > 20 && x < w - 20))
121 draw_pixel(fbi, x, y, 0xffff00);
122 else if (x == 20 || x == w - 20 ||
123 y == 20 || y == h - 20)
124 draw_pixel(fbi, x, y, 0xffffff);
125 else if (x == y || w - x == h - y)
126 draw_pixel(fbi, x, y, 0xff00ff);
127 else if (w - x == y || x == h - y)
128 draw_pixel(fbi, x, y, 0x00ffff);
129 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
130 int t = x * 3 / w;
131 unsigned r = 0, g = 0, b = 0;
132 unsigned c;
133 if (var->bits_per_pixel == 16) {
134 if (t == 0)
135 b = (y % 32) * 256 / 32;
136 else if (t == 1)
137 g = (y % 64) * 256 / 64;
138 else if (t == 2)
139 r = (y % 32) * 256 / 32;
140 } else {
141 if (t == 0)
142 b = (y % 256);
143 else if (t == 1)
144 g = (y % 256);
145 else if (t == 2)
146 r = (y % 256);
147 }
148 c = (r << 16) | (g << 8) | (b << 0);
149 draw_pixel(fbi, x, y, c);
150 } else {
151 draw_pixel(fbi, x, y, 0);
152 }
153 }
154 }
155 }
156 #endif
157
158 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
159 {
160 const struct vrfb *vrfb = &ofbi->region->vrfb;
161 unsigned offset;
162
163 switch (rot) {
164 case FB_ROTATE_UR:
165 offset = 0;
166 break;
167 case FB_ROTATE_CW:
168 offset = vrfb->yoffset;
169 break;
170 case FB_ROTATE_UD:
171 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
172 break;
173 case FB_ROTATE_CCW:
174 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
175 break;
176 default:
177 BUG();
178 }
179
180 offset *= vrfb->bytespp;
181
182 return offset;
183 }
184
185 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
186 {
187 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
188 return ofbi->region->vrfb.paddr[rot]
189 + omapfb_get_vrfb_offset(ofbi, rot);
190 } else {
191 return ofbi->region->paddr;
192 }
193 }
194
195 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
196 {
197 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
198 return ofbi->region->vrfb.paddr[0];
199 else
200 return ofbi->region->paddr;
201 }
202
203 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
204 {
205 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
206 return ofbi->region->vrfb.vaddr[0];
207 else
208 return ofbi->region->vaddr;
209 }
210
211 static struct omapfb_colormode omapfb_colormodes[] = {
212 {
213 .dssmode = OMAP_DSS_COLOR_UYVY,
214 .bits_per_pixel = 16,
215 .nonstd = OMAPFB_COLOR_YUV422,
216 }, {
217 .dssmode = OMAP_DSS_COLOR_YUV2,
218 .bits_per_pixel = 16,
219 .nonstd = OMAPFB_COLOR_YUY422,
220 }, {
221 .dssmode = OMAP_DSS_COLOR_ARGB16,
222 .bits_per_pixel = 16,
223 .red = { .length = 4, .offset = 8, .msb_right = 0 },
224 .green = { .length = 4, .offset = 4, .msb_right = 0 },
225 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
226 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
227 }, {
228 .dssmode = OMAP_DSS_COLOR_RGB16,
229 .bits_per_pixel = 16,
230 .red = { .length = 5, .offset = 11, .msb_right = 0 },
231 .green = { .length = 6, .offset = 5, .msb_right = 0 },
232 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
233 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
234 }, {
235 .dssmode = OMAP_DSS_COLOR_RGB24P,
236 .bits_per_pixel = 24,
237 .red = { .length = 8, .offset = 16, .msb_right = 0 },
238 .green = { .length = 8, .offset = 8, .msb_right = 0 },
239 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
240 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
241 }, {
242 .dssmode = OMAP_DSS_COLOR_RGB24U,
243 .bits_per_pixel = 32,
244 .red = { .length = 8, .offset = 16, .msb_right = 0 },
245 .green = { .length = 8, .offset = 8, .msb_right = 0 },
246 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
247 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
248 }, {
249 .dssmode = OMAP_DSS_COLOR_ARGB32,
250 .bits_per_pixel = 32,
251 .red = { .length = 8, .offset = 16, .msb_right = 0 },
252 .green = { .length = 8, .offset = 8, .msb_right = 0 },
253 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
254 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
255 }, {
256 .dssmode = OMAP_DSS_COLOR_RGBA32,
257 .bits_per_pixel = 32,
258 .red = { .length = 8, .offset = 24, .msb_right = 0 },
259 .green = { .length = 8, .offset = 16, .msb_right = 0 },
260 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
261 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
262 }, {
263 .dssmode = OMAP_DSS_COLOR_RGBX32,
264 .bits_per_pixel = 32,
265 .red = { .length = 8, .offset = 24, .msb_right = 0 },
266 .green = { .length = 8, .offset = 16, .msb_right = 0 },
267 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
268 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
269 },
270 };
271
272 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
273 struct omapfb_colormode *color)
274 {
275 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
276 {
277 return f1->length == f2->length &&
278 f1->offset == f2->offset &&
279 f1->msb_right == f2->msb_right;
280 }
281
282 if (var->bits_per_pixel == 0 ||
283 var->red.length == 0 ||
284 var->blue.length == 0 ||
285 var->green.length == 0)
286 return 0;
287
288 return var->bits_per_pixel == color->bits_per_pixel &&
289 cmp_component(&var->red, &color->red) &&
290 cmp_component(&var->green, &color->green) &&
291 cmp_component(&var->blue, &color->blue) &&
292 cmp_component(&var->transp, &color->transp);
293 }
294
295 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
296 struct omapfb_colormode *color)
297 {
298 var->bits_per_pixel = color->bits_per_pixel;
299 var->nonstd = color->nonstd;
300 var->red = color->red;
301 var->green = color->green;
302 var->blue = color->blue;
303 var->transp = color->transp;
304 }
305
306 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
307 enum omap_color_mode *mode)
308 {
309 enum omap_color_mode dssmode;
310 int i;
311
312 /* first match with nonstd field */
313 if (var->nonstd) {
314 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
315 struct omapfb_colormode *m = &omapfb_colormodes[i];
316 if (var->nonstd == m->nonstd) {
317 assign_colormode_to_var(var, m);
318 *mode = m->dssmode;
319 return 0;
320 }
321 }
322
323 return -EINVAL;
324 }
325
326 /* then try exact match of bpp and colors */
327 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
328 struct omapfb_colormode *m = &omapfb_colormodes[i];
329 if (cmp_var_to_colormode(var, m)) {
330 assign_colormode_to_var(var, m);
331 *mode = m->dssmode;
332 return 0;
333 }
334 }
335
336 /* match with bpp if user has not filled color fields
337 * properly */
338 switch (var->bits_per_pixel) {
339 case 1:
340 dssmode = OMAP_DSS_COLOR_CLUT1;
341 break;
342 case 2:
343 dssmode = OMAP_DSS_COLOR_CLUT2;
344 break;
345 case 4:
346 dssmode = OMAP_DSS_COLOR_CLUT4;
347 break;
348 case 8:
349 dssmode = OMAP_DSS_COLOR_CLUT8;
350 break;
351 case 12:
352 dssmode = OMAP_DSS_COLOR_RGB12U;
353 break;
354 case 16:
355 dssmode = OMAP_DSS_COLOR_RGB16;
356 break;
357 case 24:
358 dssmode = OMAP_DSS_COLOR_RGB24P;
359 break;
360 case 32:
361 dssmode = OMAP_DSS_COLOR_RGB24U;
362 break;
363 default:
364 return -EINVAL;
365 }
366
367 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
368 struct omapfb_colormode *m = &omapfb_colormodes[i];
369 if (dssmode == m->dssmode) {
370 assign_colormode_to_var(var, m);
371 *mode = m->dssmode;
372 return 0;
373 }
374 }
375
376 return -EINVAL;
377 }
378
379 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
380 {
381 int xres_min = OMAPFB_PLANE_XRES_MIN;
382 int xres_max = 2048;
383 int yres_min = OMAPFB_PLANE_YRES_MIN;
384 int yres_max = 2048;
385
386 /* XXX: some applications seem to set virtual res to 0. */
387 if (var->xres_virtual == 0)
388 var->xres_virtual = var->xres;
389
390 if (var->yres_virtual == 0)
391 var->yres_virtual = var->yres;
392
393 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
394 return -EINVAL;
395
396 if (var->xres < xres_min)
397 var->xres = xres_min;
398 if (var->yres < yres_min)
399 var->yres = yres_min;
400 if (var->xres > xres_max)
401 var->xres = xres_max;
402 if (var->yres > yres_max)
403 var->yres = yres_max;
404
405 if (var->xres > var->xres_virtual)
406 var->xres = var->xres_virtual;
407 if (var->yres > var->yres_virtual)
408 var->yres = var->yres_virtual;
409
410 return 0;
411 }
412
413 static void shrink_height(unsigned long max_frame_size,
414 struct fb_var_screeninfo *var)
415 {
416 DBG("can't fit FB into memory, reducing y\n");
417 var->yres_virtual = max_frame_size /
418 (var->xres_virtual * var->bits_per_pixel >> 3);
419
420 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
421 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
422
423 if (var->yres > var->yres_virtual)
424 var->yres = var->yres_virtual;
425 }
426
427 static void shrink_width(unsigned long max_frame_size,
428 struct fb_var_screeninfo *var)
429 {
430 DBG("can't fit FB into memory, reducing x\n");
431 var->xres_virtual = max_frame_size / var->yres_virtual /
432 (var->bits_per_pixel >> 3);
433
434 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
435 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
436
437 if (var->xres > var->xres_virtual)
438 var->xres = var->xres_virtual;
439 }
440
441 static int check_vrfb_fb_size(unsigned long region_size,
442 const struct fb_var_screeninfo *var)
443 {
444 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
445 var->yres_virtual, var->bits_per_pixel >> 3);
446
447 return min_phys_size > region_size ? -EINVAL : 0;
448 }
449
450 static int check_fb_size(const struct omapfb_info *ofbi,
451 struct fb_var_screeninfo *var)
452 {
453 unsigned long max_frame_size = ofbi->region->size;
454 int bytespp = var->bits_per_pixel >> 3;
455 unsigned long line_size = var->xres_virtual * bytespp;
456
457 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
458 /* One needs to check for both VRFB and OMAPFB limitations. */
459 if (check_vrfb_fb_size(max_frame_size, var))
460 shrink_height(omap_vrfb_max_height(
461 max_frame_size, var->xres_virtual, bytespp) *
462 line_size, var);
463
464 if (check_vrfb_fb_size(max_frame_size, var)) {
465 DBG("cannot fit FB to memory\n");
466 return -EINVAL;
467 }
468
469 return 0;
470 }
471
472 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
473
474 if (line_size * var->yres_virtual > max_frame_size)
475 shrink_height(max_frame_size, var);
476
477 if (line_size * var->yres_virtual > max_frame_size) {
478 shrink_width(max_frame_size, var);
479 line_size = var->xres_virtual * bytespp;
480 }
481
482 if (line_size * var->yres_virtual > max_frame_size) {
483 DBG("cannot fit FB to memory\n");
484 return -EINVAL;
485 }
486
487 return 0;
488 }
489
490 /*
491 * Consider if VRFB assisted rotation is in use and if the virtual space for
492 * the zero degree view needs to be mapped. The need for mapping also acts as
493 * the trigger for setting up the hardware on the context in question. This
494 * ensures that one does not attempt to access the virtual view before the
495 * hardware is serving the address translations.
496 */
497 static int setup_vrfb_rotation(struct fb_info *fbi)
498 {
499 struct omapfb_info *ofbi = FB2OFB(fbi);
500 struct omapfb2_mem_region *rg = ofbi->region;
501 struct vrfb *vrfb = &rg->vrfb;
502 struct fb_var_screeninfo *var = &fbi->var;
503 struct fb_fix_screeninfo *fix = &fbi->fix;
504 unsigned bytespp;
505 bool yuv_mode;
506 enum omap_color_mode mode;
507 int r;
508 bool reconf;
509
510 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
511 return 0;
512
513 DBG("setup_vrfb_rotation\n");
514
515 r = fb_mode_to_dss_mode(var, &mode);
516 if (r)
517 return r;
518
519 bytespp = var->bits_per_pixel >> 3;
520
521 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
522
523 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
524 * is enabled/disabled, or if bytes per pixel changes */
525
526 /* XXX we shouldn't allow this when framebuffer is mmapped */
527
528 reconf = false;
529
530 if (yuv_mode != vrfb->yuv_mode)
531 reconf = true;
532 else if (bytespp != vrfb->bytespp)
533 reconf = true;
534 else if (vrfb->xres != var->xres_virtual ||
535 vrfb->yres != var->yres_virtual)
536 reconf = true;
537
538 if (vrfb->vaddr[0] && reconf) {
539 fbi->screen_base = NULL;
540 fix->smem_start = 0;
541 fix->smem_len = 0;
542 iounmap(vrfb->vaddr[0]);
543 vrfb->vaddr[0] = NULL;
544 DBG("setup_vrfb_rotation: reset fb\n");
545 }
546
547 if (vrfb->vaddr[0])
548 return 0;
549
550 omap_vrfb_setup(&rg->vrfb, rg->paddr,
551 var->xres_virtual,
552 var->yres_virtual,
553 bytespp, yuv_mode);
554
555 /* Now one can ioremap the 0 angle view */
556 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
557 if (r)
558 return r;
559
560 /* used by open/write in fbmem.c */
561 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
562
563 fix->smem_start = ofbi->region->vrfb.paddr[0];
564
565 switch (var->nonstd) {
566 case OMAPFB_COLOR_YUV422:
567 case OMAPFB_COLOR_YUY422:
568 fix->line_length =
569 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
570 break;
571 default:
572 fix->line_length =
573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
574 break;
575 }
576
577 fix->smem_len = var->yres_virtual * fix->line_length;
578
579 return 0;
580 }
581
582 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
583 struct fb_var_screeninfo *var)
584 {
585 int i;
586
587 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
588 struct omapfb_colormode *mode = &omapfb_colormodes[i];
589 if (dssmode == mode->dssmode) {
590 assign_colormode_to_var(var, mode);
591 return 0;
592 }
593 }
594 return -ENOENT;
595 }
596
597 void set_fb_fix(struct fb_info *fbi)
598 {
599 struct fb_fix_screeninfo *fix = &fbi->fix;
600 struct fb_var_screeninfo *var = &fbi->var;
601 struct omapfb_info *ofbi = FB2OFB(fbi);
602 struct omapfb2_mem_region *rg = ofbi->region;
603
604 DBG("set_fb_fix\n");
605
606 /* used by open/write in fbmem.c */
607 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
608
609 /* used by mmap in fbmem.c */
610 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
611 switch (var->nonstd) {
612 case OMAPFB_COLOR_YUV422:
613 case OMAPFB_COLOR_YUY422:
614 fix->line_length =
615 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
616 break;
617 default:
618 fix->line_length =
619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
620 break;
621 }
622
623 fix->smem_len = var->yres_virtual * fix->line_length;
624 } else {
625 fix->line_length =
626 (var->xres_virtual * var->bits_per_pixel) >> 3;
627 fix->smem_len = rg->size;
628 }
629
630 fix->smem_start = omapfb_get_region_paddr(ofbi);
631
632 fix->type = FB_TYPE_PACKED_PIXELS;
633
634 if (var->nonstd)
635 fix->visual = FB_VISUAL_PSEUDOCOLOR;
636 else {
637 switch (var->bits_per_pixel) {
638 case 32:
639 case 24:
640 case 16:
641 case 12:
642 fix->visual = FB_VISUAL_TRUECOLOR;
643 /* 12bpp is stored in 16 bits */
644 break;
645 case 1:
646 case 2:
647 case 4:
648 case 8:
649 fix->visual = FB_VISUAL_PSEUDOCOLOR;
650 break;
651 }
652 }
653
654 fix->accel = FB_ACCEL_NONE;
655
656 fix->xpanstep = 1;
657 fix->ypanstep = 1;
658 }
659
660 /* check new var and possibly modify it to be ok */
661 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
662 {
663 struct omapfb_info *ofbi = FB2OFB(fbi);
664 struct omap_dss_device *display = fb2display(fbi);
665 enum omap_color_mode mode = 0;
666 int i;
667 int r;
668
669 DBG("check_fb_var %d\n", ofbi->id);
670
671 WARN_ON(!atomic_read(&ofbi->region->lock_count));
672
673 r = fb_mode_to_dss_mode(var, &mode);
674 if (r) {
675 DBG("cannot convert var to omap dss mode\n");
676 return r;
677 }
678
679 for (i = 0; i < ofbi->num_overlays; ++i) {
680 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
681 DBG("invalid mode\n");
682 return -EINVAL;
683 }
684 }
685
686 if (var->rotate > 3)
687 return -EINVAL;
688
689 if (check_fb_res_bounds(var))
690 return -EINVAL;
691
692 /* When no memory is allocated ignore the size check */
693 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
694 return -EINVAL;
695
696 if (var->xres + var->xoffset > var->xres_virtual)
697 var->xoffset = var->xres_virtual - var->xres;
698 if (var->yres + var->yoffset > var->yres_virtual)
699 var->yoffset = var->yres_virtual - var->yres;
700
701 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
702 var->xres, var->yres,
703 var->xres_virtual, var->yres_virtual);
704
705 var->height = -1;
706 var->width = -1;
707 var->grayscale = 0;
708
709 if (display && display->driver->get_timings) {
710 struct omap_video_timings timings;
711 display->driver->get_timings(display, &timings);
712
713 /* pixclock in ps, the rest in pixclock */
714 var->pixclock = timings.pixel_clock != 0 ?
715 KHZ2PICOS(timings.pixel_clock) :
716 0;
717 var->left_margin = timings.hfp;
718 var->right_margin = timings.hbp;
719 var->upper_margin = timings.vfp;
720 var->lower_margin = timings.vbp;
721 var->hsync_len = timings.hsw;
722 var->vsync_len = timings.vsw;
723 } else {
724 var->pixclock = 0;
725 var->left_margin = 0;
726 var->right_margin = 0;
727 var->upper_margin = 0;
728 var->lower_margin = 0;
729 var->hsync_len = 0;
730 var->vsync_len = 0;
731 }
732
733 /* TODO: get these from panel->config */
734 var->vmode = FB_VMODE_NONINTERLACED;
735 var->sync = 0;
736
737 return 0;
738 }
739
740 /*
741 * ---------------------------------------------------------------------------
742 * fbdev framework callbacks
743 * ---------------------------------------------------------------------------
744 */
745 static int omapfb_open(struct fb_info *fbi, int user)
746 {
747 return 0;
748 }
749
750 static int omapfb_release(struct fb_info *fbi, int user)
751 {
752 #if 0
753 struct omapfb_info *ofbi = FB2OFB(fbi);
754 struct omapfb2_device *fbdev = ofbi->fbdev;
755 struct omap_dss_device *display = fb2display(fbi);
756
757 DBG("Closing fb with plane index %d\n", ofbi->id);
758
759 omapfb_lock(fbdev);
760
761 if (display && display->get_update_mode && display->update) {
762 /* XXX this update should be removed, I think. But it's
763 * good for debugging */
764 if (display->get_update_mode(display) ==
765 OMAP_DSS_UPDATE_MANUAL) {
766 u16 w, h;
767
768 if (display->sync)
769 display->sync(display);
770
771 display->get_resolution(display, &w, &h);
772 display->update(display, 0, 0, w, h);
773 }
774 }
775
776 if (display && display->sync)
777 display->sync(display);
778
779 omapfb_unlock(fbdev);
780 #endif
781 return 0;
782 }
783
784 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
785 const struct fb_fix_screeninfo *fix, int rotation)
786 {
787 unsigned offset;
788
789 offset = var->yoffset * fix->line_length +
790 var->xoffset * (var->bits_per_pixel >> 3);
791
792 return offset;
793 }
794
795 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
796 const struct fb_fix_screeninfo *fix, int rotation)
797 {
798 unsigned offset;
799
800 if (rotation == FB_ROTATE_UD)
801 offset = (var->yres_virtual - var->yres) *
802 fix->line_length;
803 else if (rotation == FB_ROTATE_CW)
804 offset = (var->yres_virtual - var->yres) *
805 (var->bits_per_pixel >> 3);
806 else
807 offset = 0;
808
809 if (rotation == FB_ROTATE_UR)
810 offset += var->yoffset * fix->line_length +
811 var->xoffset * (var->bits_per_pixel >> 3);
812 else if (rotation == FB_ROTATE_UD)
813 offset -= var->yoffset * fix->line_length +
814 var->xoffset * (var->bits_per_pixel >> 3);
815 else if (rotation == FB_ROTATE_CW)
816 offset -= var->xoffset * fix->line_length +
817 var->yoffset * (var->bits_per_pixel >> 3);
818 else if (rotation == FB_ROTATE_CCW)
819 offset += var->xoffset * fix->line_length +
820 var->yoffset * (var->bits_per_pixel >> 3);
821
822 return offset;
823 }
824
825 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
826 const struct fb_var_screeninfo *var,
827 const struct fb_fix_screeninfo *fix,
828 int rotation, u32 *paddr, void __iomem **vaddr)
829 {
830 u32 data_start_p;
831 void __iomem *data_start_v;
832 int offset;
833
834 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
835 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
836 data_start_v = NULL;
837 } else {
838 data_start_p = omapfb_get_region_paddr(ofbi);
839 data_start_v = omapfb_get_region_vaddr(ofbi);
840 }
841
842 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
843 offset = calc_rotation_offset_vrfb(var, fix, rotation);
844 else
845 offset = calc_rotation_offset_dma(var, fix, rotation);
846
847 data_start_p += offset;
848 data_start_v += offset;
849
850 if (offset)
851 DBG("offset %d, %d = %d\n",
852 var->xoffset, var->yoffset, offset);
853
854 DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
855
856 *paddr = data_start_p;
857 *vaddr = data_start_v;
858 }
859
860 /* setup overlay according to the fb */
861 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
862 u16 posx, u16 posy, u16 outw, u16 outh)
863 {
864 int r = 0;
865 struct omapfb_info *ofbi = FB2OFB(fbi);
866 struct fb_var_screeninfo *var = &fbi->var;
867 struct fb_fix_screeninfo *fix = &fbi->fix;
868 enum omap_color_mode mode = 0;
869 u32 data_start_p = 0;
870 void __iomem *data_start_v = NULL;
871 struct omap_overlay_info info;
872 int xres, yres;
873 int screen_width;
874 int mirror;
875 int rotation = var->rotate;
876 int i;
877
878 WARN_ON(!atomic_read(&ofbi->region->lock_count));
879
880 for (i = 0; i < ofbi->num_overlays; i++) {
881 if (ovl != ofbi->overlays[i])
882 continue;
883
884 rotation = (rotation + ofbi->rotation[i]) % 4;
885 break;
886 }
887
888 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
889 posx, posy, outw, outh);
890
891 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
892 xres = var->yres;
893 yres = var->xres;
894 } else {
895 xres = var->xres;
896 yres = var->yres;
897 }
898
899 if (ofbi->region->size)
900 omapfb_calc_addr(ofbi, var, fix, rotation,
901 &data_start_p, &data_start_v);
902
903 r = fb_mode_to_dss_mode(var, &mode);
904 if (r) {
905 DBG("fb_mode_to_dss_mode failed");
906 goto err;
907 }
908
909 switch (var->nonstd) {
910 case OMAPFB_COLOR_YUV422:
911 case OMAPFB_COLOR_YUY422:
912 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
913 screen_width = fix->line_length
914 / (var->bits_per_pixel >> 2);
915 break;
916 }
917 default:
918 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
919 break;
920 }
921
922 ovl->get_overlay_info(ovl, &info);
923
924 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
925 mirror = 0;
926 else
927 mirror = ofbi->mirror;
928
929 info.paddr = data_start_p;
930 info.vaddr = data_start_v;
931 info.screen_width = screen_width;
932 info.width = xres;
933 info.height = yres;
934 info.color_mode = mode;
935 info.rotation_type = ofbi->rotation_type;
936 info.rotation = rotation;
937 info.mirror = mirror;
938
939 info.pos_x = posx;
940 info.pos_y = posy;
941 info.out_width = outw;
942 info.out_height = outh;
943
944 r = ovl->set_overlay_info(ovl, &info);
945 if (r) {
946 DBG("ovl->setup_overlay_info failed\n");
947 goto err;
948 }
949
950 return 0;
951
952 err:
953 DBG("setup_overlay failed\n");
954 return r;
955 }
956
957 /* apply var to the overlay */
958 int omapfb_apply_changes(struct fb_info *fbi, int init)
959 {
960 int r = 0;
961 struct omapfb_info *ofbi = FB2OFB(fbi);
962 struct fb_var_screeninfo *var = &fbi->var;
963 struct omap_overlay *ovl;
964 u16 posx, posy;
965 u16 outw, outh;
966 int i;
967
968 #ifdef DEBUG
969 if (omapfb_test_pattern)
970 fill_fb(fbi);
971 #endif
972
973 WARN_ON(!atomic_read(&ofbi->region->lock_count));
974
975 for (i = 0; i < ofbi->num_overlays; i++) {
976 ovl = ofbi->overlays[i];
977
978 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
979
980 if (ofbi->region->size == 0) {
981 /* the fb is not available. disable the overlay */
982 omapfb_overlay_enable(ovl, 0);
983 if (!init && ovl->manager)
984 ovl->manager->apply(ovl->manager);
985 continue;
986 }
987
988 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
989 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
990 if (rotation == FB_ROTATE_CW ||
991 rotation == FB_ROTATE_CCW) {
992 outw = var->yres;
993 outh = var->xres;
994 } else {
995 outw = var->xres;
996 outh = var->yres;
997 }
998 } else {
999 outw = ovl->info.out_width;
1000 outh = ovl->info.out_height;
1001 }
1002
1003 if (init) {
1004 posx = 0;
1005 posy = 0;
1006 } else {
1007 posx = ovl->info.pos_x;
1008 posy = ovl->info.pos_y;
1009 }
1010
1011 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
1012 if (r)
1013 goto err;
1014
1015 if (!init && ovl->manager)
1016 ovl->manager->apply(ovl->manager);
1017 }
1018 return 0;
1019 err:
1020 DBG("apply_changes failed\n");
1021 return r;
1022 }
1023
1024 /* checks var and eventually tweaks it to something supported,
1025 * DO NOT MODIFY PAR */
1026 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1027 {
1028 struct omapfb_info *ofbi = FB2OFB(fbi);
1029 int r;
1030
1031 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1032
1033 omapfb_get_mem_region(ofbi->region);
1034
1035 r = check_fb_var(fbi, var);
1036
1037 omapfb_put_mem_region(ofbi->region);
1038
1039 return r;
1040 }
1041
1042 /* set the video mode according to info->var */
1043 static int omapfb_set_par(struct fb_info *fbi)
1044 {
1045 struct omapfb_info *ofbi = FB2OFB(fbi);
1046 int r;
1047
1048 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1049
1050 omapfb_get_mem_region(ofbi->region);
1051
1052 set_fb_fix(fbi);
1053
1054 r = setup_vrfb_rotation(fbi);
1055 if (r)
1056 goto out;
1057
1058 r = omapfb_apply_changes(fbi, 0);
1059
1060 out:
1061 omapfb_put_mem_region(ofbi->region);
1062
1063 return r;
1064 }
1065
1066 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1067 struct fb_info *fbi)
1068 {
1069 struct omapfb_info *ofbi = FB2OFB(fbi);
1070 struct fb_var_screeninfo new_var;
1071 int r;
1072
1073 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1074
1075 if (var->xoffset == fbi->var.xoffset &&
1076 var->yoffset == fbi->var.yoffset)
1077 return 0;
1078
1079 new_var = fbi->var;
1080 new_var.xoffset = var->xoffset;
1081 new_var.yoffset = var->yoffset;
1082
1083 fbi->var = new_var;
1084
1085 omapfb_get_mem_region(ofbi->region);
1086
1087 r = omapfb_apply_changes(fbi, 0);
1088
1089 omapfb_put_mem_region(ofbi->region);
1090
1091 return r;
1092 }
1093
1094 static void mmap_user_open(struct vm_area_struct *vma)
1095 {
1096 struct omapfb2_mem_region *rg = vma->vm_private_data;
1097
1098 omapfb_get_mem_region(rg);
1099 atomic_inc(&rg->map_count);
1100 omapfb_put_mem_region(rg);
1101 }
1102
1103 static void mmap_user_close(struct vm_area_struct *vma)
1104 {
1105 struct omapfb2_mem_region *rg = vma->vm_private_data;
1106
1107 omapfb_get_mem_region(rg);
1108 atomic_dec(&rg->map_count);
1109 omapfb_put_mem_region(rg);
1110 }
1111
1112 static struct vm_operations_struct mmap_user_ops = {
1113 .open = mmap_user_open,
1114 .close = mmap_user_close,
1115 };
1116
1117 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1118 {
1119 struct omapfb_info *ofbi = FB2OFB(fbi);
1120 struct fb_fix_screeninfo *fix = &fbi->fix;
1121 struct omapfb2_mem_region *rg;
1122 unsigned long off;
1123 unsigned long start;
1124 u32 len;
1125 int r = -EINVAL;
1126
1127 if (vma->vm_end - vma->vm_start == 0)
1128 return 0;
1129 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1130 return -EINVAL;
1131 off = vma->vm_pgoff << PAGE_SHIFT;
1132
1133 rg = omapfb_get_mem_region(ofbi->region);
1134
1135 start = omapfb_get_region_paddr(ofbi);
1136 len = fix->smem_len;
1137 if (off >= len)
1138 goto error;
1139 if ((vma->vm_end - vma->vm_start + off) > len)
1140 goto error;
1141
1142 off += start;
1143
1144 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1145
1146 vma->vm_pgoff = off >> PAGE_SHIFT;
1147 vma->vm_flags |= VM_IO | VM_RESERVED;
1148 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1149 vma->vm_ops = &mmap_user_ops;
1150 vma->vm_private_data = rg;
1151 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1152 vma->vm_end - vma->vm_start,
1153 vma->vm_page_prot)) {
1154 r = -EAGAIN;
1155 goto error;
1156 }
1157
1158 /* vm_ops.open won't be called for mmap itself. */
1159 atomic_inc(&rg->map_count);
1160
1161 omapfb_put_mem_region(rg);
1162
1163 return 0;
1164
1165 error:
1166 omapfb_put_mem_region(ofbi->region);
1167
1168 return r;
1169 }
1170
1171 /* Store a single color palette entry into a pseudo palette or the hardware
1172 * palette if one is available. For now we support only 16bpp and thus store
1173 * the entry only to the pseudo palette.
1174 */
1175 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1176 u_int blue, u_int transp, int update_hw_pal)
1177 {
1178 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1179 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1180 struct fb_var_screeninfo *var = &fbi->var;
1181 int r = 0;
1182
1183 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1184
1185 /*switch (plane->color_mode) {*/
1186 switch (mode) {
1187 case OMAPFB_COLOR_YUV422:
1188 case OMAPFB_COLOR_YUV420:
1189 case OMAPFB_COLOR_YUY422:
1190 r = -EINVAL;
1191 break;
1192 case OMAPFB_COLOR_CLUT_8BPP:
1193 case OMAPFB_COLOR_CLUT_4BPP:
1194 case OMAPFB_COLOR_CLUT_2BPP:
1195 case OMAPFB_COLOR_CLUT_1BPP:
1196 /*
1197 if (fbdev->ctrl->setcolreg)
1198 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1199 transp, update_hw_pal);
1200 */
1201 /* Fallthrough */
1202 r = -EINVAL;
1203 break;
1204 case OMAPFB_COLOR_RGB565:
1205 case OMAPFB_COLOR_RGB444:
1206 case OMAPFB_COLOR_RGB24P:
1207 case OMAPFB_COLOR_RGB24U:
1208 if (r != 0)
1209 break;
1210
1211 if (regno < 16) {
1212 u16 pal;
1213 pal = ((red >> (16 - var->red.length)) <<
1214 var->red.offset) |
1215 ((green >> (16 - var->green.length)) <<
1216 var->green.offset) |
1217 (blue >> (16 - var->blue.length));
1218 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1219 }
1220 break;
1221 default:
1222 BUG();
1223 }
1224 return r;
1225 }
1226
1227 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1228 u_int transp, struct fb_info *info)
1229 {
1230 DBG("setcolreg\n");
1231
1232 return _setcolreg(info, regno, red, green, blue, transp, 1);
1233 }
1234
1235 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1236 {
1237 int count, index, r;
1238 u16 *red, *green, *blue, *transp;
1239 u16 trans = 0xffff;
1240
1241 DBG("setcmap\n");
1242
1243 red = cmap->red;
1244 green = cmap->green;
1245 blue = cmap->blue;
1246 transp = cmap->transp;
1247 index = cmap->start;
1248
1249 for (count = 0; count < cmap->len; count++) {
1250 if (transp)
1251 trans = *transp++;
1252 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1253 count == cmap->len - 1);
1254 if (r != 0)
1255 return r;
1256 }
1257
1258 return 0;
1259 }
1260
1261 static int omapfb_blank(int blank, struct fb_info *fbi)
1262 {
1263 struct omapfb_info *ofbi = FB2OFB(fbi);
1264 struct omapfb2_device *fbdev = ofbi->fbdev;
1265 struct omap_dss_device *display = fb2display(fbi);
1266 int do_update = 0;
1267 int r = 0;
1268
1269 if (!display)
1270 return -EINVAL;
1271
1272 omapfb_lock(fbdev);
1273
1274 switch (blank) {
1275 case FB_BLANK_UNBLANK:
1276 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1277 goto exit;
1278
1279 if (display->driver->resume)
1280 r = display->driver->resume(display);
1281
1282 if (r == 0 && display->driver->get_update_mode &&
1283 display->driver->get_update_mode(display) ==
1284 OMAP_DSS_UPDATE_MANUAL)
1285 do_update = 1;
1286
1287 break;
1288
1289 case FB_BLANK_NORMAL:
1290 /* FB_BLANK_NORMAL could be implemented.
1291 * Needs DSS additions. */
1292 case FB_BLANK_VSYNC_SUSPEND:
1293 case FB_BLANK_HSYNC_SUSPEND:
1294 case FB_BLANK_POWERDOWN:
1295 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1296 goto exit;
1297
1298 if (display->driver->suspend)
1299 r = display->driver->suspend(display);
1300
1301 break;
1302
1303 default:
1304 r = -EINVAL;
1305 }
1306
1307 exit:
1308 omapfb_unlock(fbdev);
1309
1310 if (r == 0 && do_update && display->driver->update) {
1311 u16 w, h;
1312 display->driver->get_resolution(display, &w, &h);
1313
1314 r = display->driver->update(display, 0, 0, w, h);
1315 }
1316
1317 return r;
1318 }
1319
1320 #if 0
1321 /* XXX fb_read and fb_write are needed for VRFB */
1322 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1323 size_t count, loff_t *ppos)
1324 {
1325 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1326 /* XXX needed for VRFB */
1327 return count;
1328 }
1329 #endif
1330
1331 static struct fb_ops omapfb_ops = {
1332 .owner = THIS_MODULE,
1333 .fb_open = omapfb_open,
1334 .fb_release = omapfb_release,
1335 .fb_fillrect = cfb_fillrect,
1336 .fb_copyarea = cfb_copyarea,
1337 .fb_imageblit = cfb_imageblit,
1338 .fb_blank = omapfb_blank,
1339 .fb_ioctl = omapfb_ioctl,
1340 .fb_check_var = omapfb_check_var,
1341 .fb_set_par = omapfb_set_par,
1342 .fb_pan_display = omapfb_pan_display,
1343 .fb_mmap = omapfb_mmap,
1344 .fb_setcolreg = omapfb_setcolreg,
1345 .fb_setcmap = omapfb_setcmap,
1346 /*.fb_write = omapfb_write,*/
1347 };
1348
1349 static void omapfb_free_fbmem(struct fb_info *fbi)
1350 {
1351 struct omapfb_info *ofbi = FB2OFB(fbi);
1352 struct omapfb2_device *fbdev = ofbi->fbdev;
1353 struct omapfb2_mem_region *rg;
1354
1355 rg = ofbi->region;
1356
1357 WARN_ON(atomic_read(&rg->map_count));
1358
1359 if (rg->paddr)
1360 if (omap_vram_free(rg->paddr, rg->size))
1361 dev_err(fbdev->dev, "VRAM FREE failed\n");
1362
1363 if (rg->vaddr)
1364 iounmap(rg->vaddr);
1365
1366 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1367 /* unmap the 0 angle rotation */
1368 if (rg->vrfb.vaddr[0]) {
1369 iounmap(rg->vrfb.vaddr[0]);
1370 omap_vrfb_release_ctx(&rg->vrfb);
1371 rg->vrfb.vaddr[0] = NULL;
1372 }
1373 }
1374
1375 rg->vaddr = NULL;
1376 rg->paddr = 0;
1377 rg->alloc = 0;
1378 rg->size = 0;
1379 }
1380
1381 static void clear_fb_info(struct fb_info *fbi)
1382 {
1383 memset(&fbi->var, 0, sizeof(fbi->var));
1384 memset(&fbi->fix, 0, sizeof(fbi->fix));
1385 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1386 }
1387
1388 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1389 {
1390 int i;
1391
1392 DBG("free all fbmem\n");
1393
1394 for (i = 0; i < fbdev->num_fbs; i++) {
1395 struct fb_info *fbi = fbdev->fbs[i];
1396 omapfb_free_fbmem(fbi);
1397 clear_fb_info(fbi);
1398 }
1399
1400 return 0;
1401 }
1402
1403 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1404 unsigned long paddr)
1405 {
1406 struct omapfb_info *ofbi = FB2OFB(fbi);
1407 struct omapfb2_device *fbdev = ofbi->fbdev;
1408 struct omapfb2_mem_region *rg;
1409 void __iomem *vaddr;
1410 int r;
1411
1412 rg = ofbi->region;
1413
1414 rg->paddr = 0;
1415 rg->vaddr = NULL;
1416 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1417 rg->size = 0;
1418 rg->type = 0;
1419 rg->alloc = false;
1420 rg->map = false;
1421
1422 size = PAGE_ALIGN(size);
1423
1424 if (!paddr) {
1425 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1426 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1427 } else {
1428 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1429 ofbi->id);
1430 r = omap_vram_reserve(paddr, size);
1431 }
1432
1433 if (r) {
1434 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1435 return -ENOMEM;
1436 }
1437
1438 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1439 vaddr = ioremap_wc(paddr, size);
1440
1441 if (!vaddr) {
1442 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1443 omap_vram_free(paddr, size);
1444 return -ENOMEM;
1445 }
1446
1447 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1448 } else {
1449 r = omap_vrfb_request_ctx(&rg->vrfb);
1450 if (r) {
1451 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1452 return r;
1453 }
1454
1455 vaddr = NULL;
1456 }
1457
1458 rg->paddr = paddr;
1459 rg->vaddr = vaddr;
1460 rg->size = size;
1461 rg->alloc = 1;
1462
1463 return 0;
1464 }
1465
1466 /* allocate fbmem using display resolution as reference */
1467 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1468 unsigned long paddr)
1469 {
1470 struct omapfb_info *ofbi = FB2OFB(fbi);
1471 struct omapfb2_device *fbdev = ofbi->fbdev;
1472 struct omap_dss_device *display;
1473 int bytespp;
1474
1475 display = fb2display(fbi);
1476
1477 if (!display)
1478 return 0;
1479
1480 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1481 case 16:
1482 bytespp = 2;
1483 break;
1484 case 24:
1485 bytespp = 4;
1486 break;
1487 default:
1488 bytespp = 4;
1489 break;
1490 }
1491
1492 if (!size) {
1493 u16 w, h;
1494
1495 display->driver->get_resolution(display, &w, &h);
1496
1497 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1498 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1499 omap_vrfb_min_phys_size(h, w, bytespp));
1500
1501 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1502 w * h * bytespp, size);
1503 } else {
1504 size = w * h * bytespp;
1505 }
1506 }
1507
1508 if (!size)
1509 return 0;
1510
1511 return omapfb_alloc_fbmem(fbi, size, paddr);
1512 }
1513
1514 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1515 {
1516 enum omap_color_mode mode;
1517
1518 switch (fmt) {
1519 case OMAPFB_COLOR_RGB565:
1520 mode = OMAP_DSS_COLOR_RGB16;
1521 break;
1522 case OMAPFB_COLOR_YUV422:
1523 mode = OMAP_DSS_COLOR_YUV2;
1524 break;
1525 case OMAPFB_COLOR_CLUT_8BPP:
1526 mode = OMAP_DSS_COLOR_CLUT8;
1527 break;
1528 case OMAPFB_COLOR_CLUT_4BPP:
1529 mode = OMAP_DSS_COLOR_CLUT4;
1530 break;
1531 case OMAPFB_COLOR_CLUT_2BPP:
1532 mode = OMAP_DSS_COLOR_CLUT2;
1533 break;
1534 case OMAPFB_COLOR_CLUT_1BPP:
1535 mode = OMAP_DSS_COLOR_CLUT1;
1536 break;
1537 case OMAPFB_COLOR_RGB444:
1538 mode = OMAP_DSS_COLOR_RGB12U;
1539 break;
1540 case OMAPFB_COLOR_YUY422:
1541 mode = OMAP_DSS_COLOR_UYVY;
1542 break;
1543 case OMAPFB_COLOR_ARGB16:
1544 mode = OMAP_DSS_COLOR_ARGB16;
1545 break;
1546 case OMAPFB_COLOR_RGB24U:
1547 mode = OMAP_DSS_COLOR_RGB24U;
1548 break;
1549 case OMAPFB_COLOR_RGB24P:
1550 mode = OMAP_DSS_COLOR_RGB24P;
1551 break;
1552 case OMAPFB_COLOR_ARGB32:
1553 mode = OMAP_DSS_COLOR_ARGB32;
1554 break;
1555 case OMAPFB_COLOR_RGBA32:
1556 mode = OMAP_DSS_COLOR_RGBA32;
1557 break;
1558 case OMAPFB_COLOR_RGBX32:
1559 mode = OMAP_DSS_COLOR_RGBX32;
1560 break;
1561 default:
1562 mode = -EINVAL;
1563 }
1564
1565 return mode;
1566 }
1567
1568 static int omapfb_parse_vram_param(const char *param, int max_entries,
1569 unsigned long *sizes, unsigned long *paddrs)
1570 {
1571 int fbnum;
1572 unsigned long size;
1573 unsigned long paddr = 0;
1574 char *p, *start;
1575
1576 start = (char *)param;
1577
1578 while (1) {
1579 p = start;
1580
1581 fbnum = simple_strtoul(p, &p, 10);
1582
1583 if (p == param)
1584 return -EINVAL;
1585
1586 if (*p != ':')
1587 return -EINVAL;
1588
1589 if (fbnum >= max_entries)
1590 return -EINVAL;
1591
1592 size = memparse(p + 1, &p);
1593
1594 if (!size)
1595 return -EINVAL;
1596
1597 paddr = 0;
1598
1599 if (*p == '@') {
1600 paddr = simple_strtoul(p + 1, &p, 16);
1601
1602 if (!paddr)
1603 return -EINVAL;
1604
1605 }
1606
1607 paddrs[fbnum] = paddr;
1608 sizes[fbnum] = size;
1609
1610 if (*p == 0)
1611 break;
1612
1613 if (*p != ',')
1614 return -EINVAL;
1615
1616 ++p;
1617
1618 start = p;
1619 }
1620
1621 return 0;
1622 }
1623
1624 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1625 {
1626 int i, r;
1627 unsigned long vram_sizes[10];
1628 unsigned long vram_paddrs[10];
1629
1630 memset(&vram_sizes, 0, sizeof(vram_sizes));
1631 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1632
1633 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1634 vram_sizes, vram_paddrs)) {
1635 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1636
1637 memset(&vram_sizes, 0, sizeof(vram_sizes));
1638 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1639 }
1640
1641 if (fbdev->dev->platform_data) {
1642 struct omapfb_platform_data *opd;
1643 opd = fbdev->dev->platform_data;
1644 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1645 if (!vram_sizes[i]) {
1646 unsigned long size;
1647 unsigned long paddr;
1648
1649 size = opd->mem_desc.region[i].size;
1650 paddr = opd->mem_desc.region[i].paddr;
1651
1652 vram_sizes[i] = size;
1653 vram_paddrs[i] = paddr;
1654 }
1655 }
1656 }
1657
1658 for (i = 0; i < fbdev->num_fbs; i++) {
1659 /* allocate memory automatically only for fb0, or if
1660 * excplicitly defined with vram or plat data option */
1661 if (i == 0 || vram_sizes[i] != 0) {
1662 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1663 vram_sizes[i], vram_paddrs[i]);
1664
1665 if (r)
1666 return r;
1667 }
1668 }
1669
1670 for (i = 0; i < fbdev->num_fbs; i++) {
1671 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1672 struct omapfb2_mem_region *rg;
1673 rg = ofbi->region;
1674
1675 DBG("region%d phys %08x virt %p size=%lu\n",
1676 i,
1677 rg->paddr,
1678 rg->vaddr,
1679 rg->size);
1680 }
1681
1682 return 0;
1683 }
1684
1685 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1686 {
1687 struct omapfb_info *ofbi = FB2OFB(fbi);
1688 struct omapfb2_device *fbdev = ofbi->fbdev;
1689 struct omap_dss_device *display = fb2display(fbi);
1690 struct omapfb2_mem_region *rg = ofbi->region;
1691 unsigned long old_size = rg->size;
1692 unsigned long old_paddr = rg->paddr;
1693 int old_type = rg->type;
1694 int r;
1695
1696 if (type > OMAPFB_MEMTYPE_MAX)
1697 return -EINVAL;
1698
1699 size = PAGE_ALIGN(size);
1700
1701 if (old_size == size && old_type == type)
1702 return 0;
1703
1704 if (display && display->driver->sync)
1705 display->driver->sync(display);
1706
1707 omapfb_free_fbmem(fbi);
1708
1709 if (size == 0) {
1710 clear_fb_info(fbi);
1711 return 0;
1712 }
1713
1714 r = omapfb_alloc_fbmem(fbi, size, 0);
1715
1716 if (r) {
1717 if (old_size)
1718 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1719
1720 if (rg->size == 0)
1721 clear_fb_info(fbi);
1722
1723 return r;
1724 }
1725
1726 if (old_size == size)
1727 return 0;
1728
1729 if (old_size == 0) {
1730 DBG("initializing fb %d\n", ofbi->id);
1731 r = omapfb_fb_init(fbdev, fbi);
1732 if (r) {
1733 DBG("omapfb_fb_init failed\n");
1734 goto err;
1735 }
1736 r = omapfb_apply_changes(fbi, 1);
1737 if (r) {
1738 DBG("omapfb_apply_changes failed\n");
1739 goto err;
1740 }
1741 } else {
1742 struct fb_var_screeninfo new_var;
1743 memcpy(&new_var, &fbi->var, sizeof(new_var));
1744 r = check_fb_var(fbi, &new_var);
1745 if (r)
1746 goto err;
1747 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1748 set_fb_fix(fbi);
1749 r = setup_vrfb_rotation(fbi);
1750 if (r)
1751 goto err;
1752 }
1753
1754 return 0;
1755 err:
1756 omapfb_free_fbmem(fbi);
1757 clear_fb_info(fbi);
1758 return r;
1759 }
1760
1761 /* initialize fb_info, var, fix to something sane based on the display */
1762 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1763 {
1764 struct fb_var_screeninfo *var = &fbi->var;
1765 struct omap_dss_device *display = fb2display(fbi);
1766 struct omapfb_info *ofbi = FB2OFB(fbi);
1767 int r = 0;
1768
1769 fbi->fbops = &omapfb_ops;
1770 fbi->flags = FBINFO_FLAG_DEFAULT;
1771 fbi->pseudo_palette = fbdev->pseudo_palette;
1772
1773 if (ofbi->region->size == 0) {
1774 clear_fb_info(fbi);
1775 return 0;
1776 }
1777
1778 var->nonstd = 0;
1779 var->bits_per_pixel = 0;
1780
1781 var->rotate = def_rotate;
1782
1783 /*
1784 * Check if there is a default color format set in the board file,
1785 * and use this format instead the default deducted from the
1786 * display bpp.
1787 */
1788 if (fbdev->dev->platform_data) {
1789 struct omapfb_platform_data *opd;
1790 int id = ofbi->id;
1791
1792 opd = fbdev->dev->platform_data;
1793 if (opd->mem_desc.region[id].format_used) {
1794 enum omap_color_mode mode;
1795 enum omapfb_color_format format;
1796
1797 format = opd->mem_desc.region[id].format;
1798 mode = fb_format_to_dss_mode(format);
1799 if (mode < 0) {
1800 r = mode;
1801 goto err;
1802 }
1803 r = dss_mode_to_fb_mode(mode, var);
1804 if (r < 0)
1805 goto err;
1806 }
1807 }
1808
1809 if (display) {
1810 u16 w, h;
1811 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1812
1813 display->driver->get_resolution(display, &w, &h);
1814
1815 if (rotation == FB_ROTATE_CW ||
1816 rotation == FB_ROTATE_CCW) {
1817 var->xres = h;
1818 var->yres = w;
1819 } else {
1820 var->xres = w;
1821 var->yres = h;
1822 }
1823
1824 var->xres_virtual = var->xres;
1825 var->yres_virtual = var->yres;
1826
1827 if (!var->bits_per_pixel) {
1828 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1829 case 16:
1830 var->bits_per_pixel = 16;
1831 break;
1832 case 24:
1833 var->bits_per_pixel = 32;
1834 break;
1835 default:
1836 dev_err(fbdev->dev, "illegal display "
1837 "bpp\n");
1838 return -EINVAL;
1839 }
1840 }
1841 } else {
1842 /* if there's no display, let's just guess some basic values */
1843 var->xres = 320;
1844 var->yres = 240;
1845 var->xres_virtual = var->xres;
1846 var->yres_virtual = var->yres;
1847 if (!var->bits_per_pixel)
1848 var->bits_per_pixel = 16;
1849 }
1850
1851 r = check_fb_var(fbi, var);
1852 if (r)
1853 goto err;
1854
1855 set_fb_fix(fbi);
1856 r = setup_vrfb_rotation(fbi);
1857 if (r)
1858 goto err;
1859
1860 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1861 if (r)
1862 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1863
1864 err:
1865 return r;
1866 }
1867
1868 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1869 {
1870 fb_dealloc_cmap(&fbi->cmap);
1871 }
1872
1873
1874 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1875 {
1876 int i;
1877
1878 DBG("free_resources\n");
1879
1880 if (fbdev == NULL)
1881 return;
1882
1883 for (i = 0; i < fbdev->num_fbs; i++)
1884 unregister_framebuffer(fbdev->fbs[i]);
1885
1886 /* free the reserved fbmem */
1887 omapfb_free_all_fbmem(fbdev);
1888
1889 for (i = 0; i < fbdev->num_fbs; i++) {
1890 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1891 framebuffer_release(fbdev->fbs[i]);
1892 }
1893
1894 for (i = 0; i < fbdev->num_displays; i++) {
1895 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1896 fbdev->displays[i]->driver->disable(fbdev->displays[i]);
1897
1898 omap_dss_put_device(fbdev->displays[i]);
1899 }
1900
1901 dev_set_drvdata(fbdev->dev, NULL);
1902 kfree(fbdev);
1903 }
1904
1905 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1906 {
1907 int r, i;
1908
1909 fbdev->num_fbs = 0;
1910
1911 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1912
1913 /* allocate fb_infos */
1914 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1915 struct fb_info *fbi;
1916 struct omapfb_info *ofbi;
1917
1918 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1919 fbdev->dev);
1920
1921 if (fbi == NULL) {
1922 dev_err(fbdev->dev,
1923 "unable to allocate memory for plane info\n");
1924 return -ENOMEM;
1925 }
1926
1927 clear_fb_info(fbi);
1928
1929 fbdev->fbs[i] = fbi;
1930
1931 ofbi = FB2OFB(fbi);
1932 ofbi->fbdev = fbdev;
1933 ofbi->id = i;
1934
1935 ofbi->region = &fbdev->regions[i];
1936 ofbi->region->id = i;
1937 init_rwsem(&ofbi->region->lock);
1938
1939 /* assign these early, so that fb alloc can use them */
1940 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1941 OMAP_DSS_ROT_DMA;
1942 ofbi->mirror = def_mirror;
1943
1944 fbdev->num_fbs++;
1945 }
1946
1947 DBG("fb_infos allocated\n");
1948
1949 /* assign overlays for the fbs */
1950 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1951 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1952
1953 ofbi->overlays[0] = fbdev->overlays[i];
1954 ofbi->num_overlays = 1;
1955 }
1956
1957 /* allocate fb memories */
1958 r = omapfb_allocate_all_fbs(fbdev);
1959 if (r) {
1960 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1961 return r;
1962 }
1963
1964 DBG("fbmems allocated\n");
1965
1966 /* setup fb_infos */
1967 for (i = 0; i < fbdev->num_fbs; i++) {
1968 struct fb_info *fbi = fbdev->fbs[i];
1969 struct omapfb_info *ofbi = FB2OFB(fbi);
1970
1971 omapfb_get_mem_region(ofbi->region);
1972 r = omapfb_fb_init(fbdev, fbi);
1973 omapfb_put_mem_region(ofbi->region);
1974
1975 if (r) {
1976 dev_err(fbdev->dev, "failed to setup fb_info\n");
1977 return r;
1978 }
1979 }
1980
1981 DBG("fb_infos initialized\n");
1982
1983 for (i = 0; i < fbdev->num_fbs; i++) {
1984 r = register_framebuffer(fbdev->fbs[i]);
1985 if (r != 0) {
1986 dev_err(fbdev->dev,
1987 "registering framebuffer %d failed\n", i);
1988 return r;
1989 }
1990 }
1991
1992 DBG("framebuffers registered\n");
1993
1994 for (i = 0; i < fbdev->num_fbs; i++) {
1995 struct fb_info *fbi = fbdev->fbs[i];
1996 struct omapfb_info *ofbi = FB2OFB(fbi);
1997
1998 omapfb_get_mem_region(ofbi->region);
1999 r = omapfb_apply_changes(fbi, 1);
2000 omapfb_put_mem_region(ofbi->region);
2001
2002 if (r) {
2003 dev_err(fbdev->dev, "failed to change mode\n");
2004 return r;
2005 }
2006 }
2007
2008 DBG("create sysfs for fbs\n");
2009 r = omapfb_create_sysfs(fbdev);
2010 if (r) {
2011 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2012 return r;
2013 }
2014
2015 /* Enable fb0 */
2016 if (fbdev->num_fbs > 0) {
2017 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2018
2019 if (ofbi->num_overlays > 0) {
2020 struct omap_overlay *ovl = ofbi->overlays[0];
2021
2022 r = omapfb_overlay_enable(ovl, 1);
2023
2024 if (r) {
2025 dev_err(fbdev->dev,
2026 "failed to enable overlay\n");
2027 return r;
2028 }
2029 }
2030 }
2031
2032 DBG("create_framebuffers done\n");
2033
2034 return 0;
2035 }
2036
2037 static int omapfb_mode_to_timings(const char *mode_str,
2038 struct omap_video_timings *timings, u8 *bpp)
2039 {
2040 struct fb_info fbi;
2041 struct fb_var_screeninfo var;
2042 struct fb_ops fbops;
2043 int r;
2044
2045 #ifdef CONFIG_OMAP2_DSS_VENC
2046 if (strcmp(mode_str, "pal") == 0) {
2047 *timings = omap_dss_pal_timings;
2048 *bpp = 0;
2049 return 0;
2050 } else if (strcmp(mode_str, "ntsc") == 0) {
2051 *timings = omap_dss_ntsc_timings;
2052 *bpp = 0;
2053 return 0;
2054 }
2055 #endif
2056
2057 /* this is quite a hack, but I wanted to use the modedb and for
2058 * that we need fb_info and var, so we create dummy ones */
2059
2060 memset(&fbi, 0, sizeof(fbi));
2061 memset(&var, 0, sizeof(var));
2062 memset(&fbops, 0, sizeof(fbops));
2063 fbi.fbops = &fbops;
2064
2065 r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
2066
2067 if (r != 0) {
2068 timings->pixel_clock = PICOS2KHZ(var.pixclock);
2069 timings->hfp = var.left_margin;
2070 timings->hbp = var.right_margin;
2071 timings->vfp = var.upper_margin;
2072 timings->vbp = var.lower_margin;
2073 timings->hsw = var.hsync_len;
2074 timings->vsw = var.vsync_len;
2075 timings->x_res = var.xres;
2076 timings->y_res = var.yres;
2077
2078 switch (var.bits_per_pixel) {
2079 case 16:
2080 *bpp = 16;
2081 break;
2082 case 24:
2083 case 32:
2084 default:
2085 *bpp = 24;
2086 break;
2087 }
2088
2089 return 0;
2090 } else {
2091 return -EINVAL;
2092 }
2093 }
2094
2095 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2096 struct omap_dss_device *display, char *mode_str)
2097 {
2098 int r;
2099 u8 bpp;
2100 struct omap_video_timings timings;
2101
2102 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2103 if (r)
2104 return r;
2105
2106 fbdev->bpp_overrides[fbdev->num_bpp_overrides].dssdev = display;
2107 fbdev->bpp_overrides[fbdev->num_bpp_overrides].bpp = bpp;
2108 ++fbdev->num_bpp_overrides;
2109
2110 if (!display->driver->check_timings || !display->driver->set_timings)
2111 return -EINVAL;
2112
2113 r = display->driver->check_timings(display, &timings);
2114 if (r)
2115 return r;
2116
2117 display->driver->set_timings(display, &timings);
2118
2119 return 0;
2120 }
2121
2122 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2123 struct omap_dss_device *dssdev)
2124 {
2125 int i;
2126
2127 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2128
2129 for (i = 0; i < fbdev->num_bpp_overrides; ++i) {
2130 if (dssdev == fbdev->bpp_overrides[i].dssdev)
2131 return fbdev->bpp_overrides[i].bpp;
2132 }
2133
2134 return dssdev->driver->get_recommended_bpp(dssdev);
2135 }
2136
2137 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2138 {
2139 char *str, *options, *this_opt;
2140 int r = 0;
2141
2142 str = kmalloc(strlen(def_mode) + 1, GFP_KERNEL);
2143 strcpy(str, def_mode);
2144 options = str;
2145
2146 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2147 char *p, *display_str, *mode_str;
2148 struct omap_dss_device *display;
2149 int i;
2150
2151 p = strchr(this_opt, ':');
2152 if (!p) {
2153 r = -EINVAL;
2154 break;
2155 }
2156
2157 *p = 0;
2158 display_str = this_opt;
2159 mode_str = p + 1;
2160
2161 display = NULL;
2162 for (i = 0; i < fbdev->num_displays; ++i) {
2163 if (strcmp(fbdev->displays[i]->name,
2164 display_str) == 0) {
2165 display = fbdev->displays[i];
2166 break;
2167 }
2168 }
2169
2170 if (!display) {
2171 r = -EINVAL;
2172 break;
2173 }
2174
2175 r = omapfb_set_def_mode(fbdev, display, mode_str);
2176 if (r)
2177 break;
2178 }
2179
2180 kfree(str);
2181
2182 return r;
2183 }
2184
2185 static int omapfb_probe(struct platform_device *pdev)
2186 {
2187 struct omapfb2_device *fbdev = NULL;
2188 int r = 0;
2189 int i;
2190 struct omap_overlay *ovl;
2191 struct omap_dss_device *def_display;
2192 struct omap_dss_device *dssdev;
2193
2194 DBG("omapfb_probe\n");
2195
2196 if (pdev->num_resources != 0) {
2197 dev_err(&pdev->dev, "probed for an unknown device\n");
2198 r = -ENODEV;
2199 goto err0;
2200 }
2201
2202 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2203 if (fbdev == NULL) {
2204 r = -ENOMEM;
2205 goto err0;
2206 }
2207
2208 mutex_init(&fbdev->mtx);
2209
2210 fbdev->dev = &pdev->dev;
2211 platform_set_drvdata(pdev, fbdev);
2212
2213 r = 0;
2214 fbdev->num_displays = 0;
2215 dssdev = NULL;
2216 for_each_dss_dev(dssdev) {
2217 omap_dss_get_device(dssdev);
2218
2219 if (!dssdev->driver) {
2220 dev_err(&pdev->dev, "no driver for display\n");
2221 r = -ENODEV;
2222 }
2223
2224 fbdev->displays[fbdev->num_displays++] = dssdev;
2225 }
2226
2227 if (r)
2228 goto cleanup;
2229
2230 if (fbdev->num_displays == 0) {
2231 dev_err(&pdev->dev, "no displays\n");
2232 r = -EINVAL;
2233 goto cleanup;
2234 }
2235
2236 fbdev->num_overlays = omap_dss_get_num_overlays();
2237 for (i = 0; i < fbdev->num_overlays; i++)
2238 fbdev->overlays[i] = omap_dss_get_overlay(i);
2239
2240 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2241 for (i = 0; i < fbdev->num_managers; i++)
2242 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2243
2244 if (def_mode && strlen(def_mode) > 0) {
2245 if (omapfb_parse_def_modes(fbdev))
2246 dev_warn(&pdev->dev, "cannot parse default modes\n");
2247 }
2248
2249 r = omapfb_create_framebuffers(fbdev);
2250 if (r)
2251 goto cleanup;
2252
2253 for (i = 0; i < fbdev->num_managers; i++) {
2254 struct omap_overlay_manager *mgr;
2255 mgr = fbdev->managers[i];
2256 r = mgr->apply(mgr);
2257 if (r)
2258 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2259 }
2260
2261 DBG("mgr->apply'ed\n");
2262
2263 /* gfx overlay should be the default one. find a display
2264 * connected to that, and use it as default display */
2265 ovl = omap_dss_get_overlay(0);
2266 if (ovl->manager && ovl->manager->device) {
2267 def_display = ovl->manager->device;
2268 } else {
2269 dev_warn(&pdev->dev, "cannot find default display\n");
2270 def_display = NULL;
2271 }
2272
2273 if (def_display) {
2274 struct omap_dss_driver *dssdrv = def_display->driver;
2275
2276 r = def_display->driver->enable(def_display);
2277 if (r) {
2278 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2279 def_display->name);
2280 goto cleanup;
2281 }
2282
2283 if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2284 u16 w, h;
2285 if (dssdrv->enable_te)
2286 dssdrv->enable_te(def_display, 1);
2287 if (dssdrv->set_update_mode)
2288 dssdrv->set_update_mode(def_display,
2289 OMAP_DSS_UPDATE_MANUAL);
2290
2291 dssdrv->get_resolution(def_display, &w, &h);
2292 def_display->driver->update(def_display, 0, 0, w, h);
2293 } else {
2294 if (dssdrv->set_update_mode)
2295 dssdrv->set_update_mode(def_display,
2296 OMAP_DSS_UPDATE_AUTO);
2297 }
2298 }
2299
2300 return 0;
2301
2302 cleanup:
2303 omapfb_free_resources(fbdev);
2304 err0:
2305 dev_err(&pdev->dev, "failed to setup omapfb\n");
2306 return r;
2307 }
2308
2309 static int omapfb_remove(struct platform_device *pdev)
2310 {
2311 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2312
2313 /* FIXME: wait till completion of pending events */
2314
2315 omapfb_remove_sysfs(fbdev);
2316
2317 omapfb_free_resources(fbdev);
2318
2319 return 0;
2320 }
2321
2322 static struct platform_driver omapfb_driver = {
2323 .probe = omapfb_probe,
2324 .remove = omapfb_remove,
2325 .driver = {
2326 .name = "omapfb",
2327 .owner = THIS_MODULE,
2328 },
2329 };
2330
2331 static int __init omapfb_init(void)
2332 {
2333 DBG("omapfb_init\n");
2334
2335 if (platform_driver_register(&omapfb_driver)) {
2336 printk(KERN_ERR "failed to register omapfb driver\n");
2337 return -ENODEV;
2338 }
2339
2340 return 0;
2341 }
2342
2343 static void __exit omapfb_exit(void)
2344 {
2345 DBG("omapfb_exit\n");
2346 platform_driver_unregister(&omapfb_driver);
2347 }
2348
2349 module_param_named(mode, def_mode, charp, 0);
2350 module_param_named(vram, def_vram, charp, 0);
2351 module_param_named(rotate, def_rotate, int, 0);
2352 module_param_named(vrfb, def_vrfb, bool, 0);
2353 module_param_named(mirror, def_mirror, bool, 0);
2354
2355 /* late_initcall to let panel/ctrl drivers loaded first.
2356 * I guess better option would be a more dynamic approach,
2357 * so that omapfb reacts to new panels when they are loaded */
2358 late_initcall(omapfb_init);
2359 /*module_init(omapfb_init);*/
2360 module_exit(omapfb_exit);
2361
2362 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2363 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2364 MODULE_LICENSE("GPL v2");
(deprecated) Btrfs devel tree