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[mirror_ubuntu-artful-kernel.git] / drivers / video / omap2 / omapfb / omapfb-main.c
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 if (ofbi->region.size == 0)
672 return 0;
673
674 r = fb_mode_to_dss_mode(var, &mode);
675 if (r) {
676 DBG("cannot convert var to omap dss mode\n");
677 return r;
678 }
679
680 for (i = 0; i < ofbi->num_overlays; ++i) {
681 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
682 DBG("invalid mode\n");
683 return -EINVAL;
684 }
685 }
686
687 if (var->rotate < 0 || var->rotate > 3)
688 return -EINVAL;
689
690 if (check_fb_res_bounds(var))
691 return -EINVAL;
692
693 if (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
826 /* setup overlay according to the fb */
827 static int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
828 u16 posx, u16 posy, u16 outw, u16 outh)
829 {
830 int r = 0;
831 struct omapfb_info *ofbi = FB2OFB(fbi);
832 struct fb_var_screeninfo *var = &fbi->var;
833 struct fb_fix_screeninfo *fix = &fbi->fix;
834 enum omap_color_mode mode = 0;
835 int offset;
836 u32 data_start_p;
837 void __iomem *data_start_v;
838 struct omap_overlay_info info;
839 int xres, yres;
840 int screen_width;
841 int mirror;
842 int rotation = var->rotate;
843 int i;
844
845 for (i = 0; i < ofbi->num_overlays; i++) {
846 if (ovl != ofbi->overlays[i])
847 continue;
848
849 rotation = (rotation + ofbi->rotation[i]) % 4;
850 break;
851 }
852
853 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
854 posx, posy, outw, outh);
855
856 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
857 xres = var->yres;
858 yres = var->xres;
859 } else {
860 xres = var->xres;
861 yres = var->yres;
862 }
863
864
865 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
866 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
867 data_start_v = NULL;
868 } else {
869 data_start_p = omapfb_get_region_paddr(ofbi);
870 data_start_v = omapfb_get_region_vaddr(ofbi);
871 }
872
873 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
874 offset = calc_rotation_offset_vrfb(var, fix, rotation);
875 else
876 offset = calc_rotation_offset_dma(var, fix, rotation);
877
878 data_start_p += offset;
879 data_start_v += offset;
880
881 if (offset)
882 DBG("offset %d, %d = %d\n",
883 var->xoffset, var->yoffset, offset);
884
885 DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
886
887 r = fb_mode_to_dss_mode(var, &mode);
888 if (r) {
889 DBG("fb_mode_to_dss_mode failed");
890 goto err;
891 }
892
893 switch (var->nonstd) {
894 case OMAPFB_COLOR_YUV422:
895 case OMAPFB_COLOR_YUY422:
896 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
897 screen_width = fix->line_length
898 / (var->bits_per_pixel >> 2);
899 break;
900 }
901 default:
902 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
903 break;
904 }
905
906 ovl->get_overlay_info(ovl, &info);
907
908 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
909 mirror = 0;
910 else
911 mirror = ofbi->mirror;
912
913 info.paddr = data_start_p;
914 info.vaddr = data_start_v;
915 info.screen_width = screen_width;
916 info.width = xres;
917 info.height = yres;
918 info.color_mode = mode;
919 info.rotation_type = ofbi->rotation_type;
920 info.rotation = rotation;
921 info.mirror = mirror;
922
923 info.pos_x = posx;
924 info.pos_y = posy;
925 info.out_width = outw;
926 info.out_height = outh;
927
928 r = ovl->set_overlay_info(ovl, &info);
929 if (r) {
930 DBG("ovl->setup_overlay_info failed\n");
931 goto err;
932 }
933
934 return 0;
935
936 err:
937 DBG("setup_overlay failed\n");
938 return r;
939 }
940
941 /* apply var to the overlay */
942 int omapfb_apply_changes(struct fb_info *fbi, int init)
943 {
944 int r = 0;
945 struct omapfb_info *ofbi = FB2OFB(fbi);
946 struct fb_var_screeninfo *var = &fbi->var;
947 struct omap_overlay *ovl;
948 u16 posx, posy;
949 u16 outw, outh;
950 int i;
951
952 #ifdef DEBUG
953 if (omapfb_test_pattern)
954 fill_fb(fbi);
955 #endif
956
957 for (i = 0; i < ofbi->num_overlays; i++) {
958 ovl = ofbi->overlays[i];
959
960 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
961
962 if (ofbi->region.size == 0) {
963 /* the fb is not available. disable the overlay */
964 omapfb_overlay_enable(ovl, 0);
965 if (!init && ovl->manager)
966 ovl->manager->apply(ovl->manager);
967 continue;
968 }
969
970 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
971 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
972 if (rotation == FB_ROTATE_CW ||
973 rotation == FB_ROTATE_CCW) {
974 outw = var->yres;
975 outh = var->xres;
976 } else {
977 outw = var->xres;
978 outh = var->yres;
979 }
980 } else {
981 outw = ovl->info.out_width;
982 outh = ovl->info.out_height;
983 }
984
985 if (init) {
986 posx = 0;
987 posy = 0;
988 } else {
989 posx = ovl->info.pos_x;
990 posy = ovl->info.pos_y;
991 }
992
993 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
994 if (r)
995 goto err;
996
997 if (!init && ovl->manager)
998 ovl->manager->apply(ovl->manager);
999 }
1000 return 0;
1001 err:
1002 DBG("apply_changes failed\n");
1003 return r;
1004 }
1005
1006 /* checks var and eventually tweaks it to something supported,
1007 * DO NOT MODIFY PAR */
1008 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1009 {
1010 int r;
1011
1012 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1013
1014 r = check_fb_var(fbi, var);
1015
1016 return r;
1017 }
1018
1019 /* set the video mode according to info->var */
1020 static int omapfb_set_par(struct fb_info *fbi)
1021 {
1022 int r;
1023
1024 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1025
1026 set_fb_fix(fbi);
1027
1028 r = setup_vrfb_rotation(fbi);
1029 if (r)
1030 return r;
1031
1032 r = omapfb_apply_changes(fbi, 0);
1033
1034 return r;
1035 }
1036
1037 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1038 struct fb_info *fbi)
1039 {
1040 struct fb_var_screeninfo new_var;
1041 int r;
1042
1043 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1044
1045 if (var->xoffset == fbi->var.xoffset &&
1046 var->yoffset == fbi->var.yoffset)
1047 return 0;
1048
1049 new_var = fbi->var;
1050 new_var.xoffset = var->xoffset;
1051 new_var.yoffset = var->yoffset;
1052
1053 fbi->var = new_var;
1054
1055 r = omapfb_apply_changes(fbi, 0);
1056
1057 return r;
1058 }
1059
1060 static void mmap_user_open(struct vm_area_struct *vma)
1061 {
1062 struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
1063
1064 atomic_inc(&ofbi->map_count);
1065 }
1066
1067 static void mmap_user_close(struct vm_area_struct *vma)
1068 {
1069 struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
1070
1071 atomic_dec(&ofbi->map_count);
1072 }
1073
1074 static struct vm_operations_struct mmap_user_ops = {
1075 .open = mmap_user_open,
1076 .close = mmap_user_close,
1077 };
1078
1079 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1080 {
1081 struct omapfb_info *ofbi = FB2OFB(fbi);
1082 struct fb_fix_screeninfo *fix = &fbi->fix;
1083 unsigned long off;
1084 unsigned long start;
1085 u32 len;
1086
1087 if (vma->vm_end - vma->vm_start == 0)
1088 return 0;
1089 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1090 return -EINVAL;
1091 off = vma->vm_pgoff << PAGE_SHIFT;
1092
1093 start = omapfb_get_region_paddr(ofbi);
1094 len = fix->smem_len;
1095 if (off >= len)
1096 return -EINVAL;
1097 if ((vma->vm_end - vma->vm_start + off) > len)
1098 return -EINVAL;
1099
1100 off += start;
1101
1102 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1103
1104 vma->vm_pgoff = off >> PAGE_SHIFT;
1105 vma->vm_flags |= VM_IO | VM_RESERVED;
1106 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1107 vma->vm_ops = &mmap_user_ops;
1108 vma->vm_private_data = ofbi;
1109 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1110 vma->vm_end - vma->vm_start, vma->vm_page_prot))
1111 return -EAGAIN;
1112 /* vm_ops.open won't be called for mmap itself. */
1113 atomic_inc(&ofbi->map_count);
1114 return 0;
1115 }
1116
1117 /* Store a single color palette entry into a pseudo palette or the hardware
1118 * palette if one is available. For now we support only 16bpp and thus store
1119 * the entry only to the pseudo palette.
1120 */
1121 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1122 u_int blue, u_int transp, int update_hw_pal)
1123 {
1124 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1125 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1126 struct fb_var_screeninfo *var = &fbi->var;
1127 int r = 0;
1128
1129 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1130
1131 /*switch (plane->color_mode) {*/
1132 switch (mode) {
1133 case OMAPFB_COLOR_YUV422:
1134 case OMAPFB_COLOR_YUV420:
1135 case OMAPFB_COLOR_YUY422:
1136 r = -EINVAL;
1137 break;
1138 case OMAPFB_COLOR_CLUT_8BPP:
1139 case OMAPFB_COLOR_CLUT_4BPP:
1140 case OMAPFB_COLOR_CLUT_2BPP:
1141 case OMAPFB_COLOR_CLUT_1BPP:
1142 /*
1143 if (fbdev->ctrl->setcolreg)
1144 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1145 transp, update_hw_pal);
1146 */
1147 /* Fallthrough */
1148 r = -EINVAL;
1149 break;
1150 case OMAPFB_COLOR_RGB565:
1151 case OMAPFB_COLOR_RGB444:
1152 case OMAPFB_COLOR_RGB24P:
1153 case OMAPFB_COLOR_RGB24U:
1154 if (r != 0)
1155 break;
1156
1157 if (regno < 0) {
1158 r = -EINVAL;
1159 break;
1160 }
1161
1162 if (regno < 16) {
1163 u16 pal;
1164 pal = ((red >> (16 - var->red.length)) <<
1165 var->red.offset) |
1166 ((green >> (16 - var->green.length)) <<
1167 var->green.offset) |
1168 (blue >> (16 - var->blue.length));
1169 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1170 }
1171 break;
1172 default:
1173 BUG();
1174 }
1175 return r;
1176 }
1177
1178 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1179 u_int transp, struct fb_info *info)
1180 {
1181 DBG("setcolreg\n");
1182
1183 return _setcolreg(info, regno, red, green, blue, transp, 1);
1184 }
1185
1186 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1187 {
1188 int count, index, r;
1189 u16 *red, *green, *blue, *transp;
1190 u16 trans = 0xffff;
1191
1192 DBG("setcmap\n");
1193
1194 red = cmap->red;
1195 green = cmap->green;
1196 blue = cmap->blue;
1197 transp = cmap->transp;
1198 index = cmap->start;
1199
1200 for (count = 0; count < cmap->len; count++) {
1201 if (transp)
1202 trans = *transp++;
1203 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1204 count == cmap->len - 1);
1205 if (r != 0)
1206 return r;
1207 }
1208
1209 return 0;
1210 }
1211
1212 static int omapfb_blank(int blank, struct fb_info *fbi)
1213 {
1214 struct omapfb_info *ofbi = FB2OFB(fbi);
1215 struct omapfb2_device *fbdev = ofbi->fbdev;
1216 struct omap_dss_device *display = fb2display(fbi);
1217 int do_update = 0;
1218 int r = 0;
1219
1220 omapfb_lock(fbdev);
1221
1222 switch (blank) {
1223 case FB_BLANK_UNBLANK:
1224 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1225 goto exit;
1226
1227 if (display->driver->resume)
1228 r = display->driver->resume(display);
1229
1230 if (r == 0 && display->driver->get_update_mode &&
1231 display->driver->get_update_mode(display) ==
1232 OMAP_DSS_UPDATE_MANUAL)
1233 do_update = 1;
1234
1235 break;
1236
1237 case FB_BLANK_NORMAL:
1238 /* FB_BLANK_NORMAL could be implemented.
1239 * Needs DSS additions. */
1240 case FB_BLANK_VSYNC_SUSPEND:
1241 case FB_BLANK_HSYNC_SUSPEND:
1242 case FB_BLANK_POWERDOWN:
1243 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1244 goto exit;
1245
1246 if (display->driver->suspend)
1247 r = display->driver->suspend(display);
1248
1249 break;
1250
1251 default:
1252 r = -EINVAL;
1253 }
1254
1255 exit:
1256 omapfb_unlock(fbdev);
1257
1258 if (r == 0 && do_update && display->driver->update) {
1259 u16 w, h;
1260 display->driver->get_resolution(display, &w, &h);
1261
1262 r = display->driver->update(display, 0, 0, w, h);
1263 }
1264
1265 return r;
1266 }
1267
1268 #if 0
1269 /* XXX fb_read and fb_write are needed for VRFB */
1270 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1271 size_t count, loff_t *ppos)
1272 {
1273 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1274 /* XXX needed for VRFB */
1275 return count;
1276 }
1277 #endif
1278
1279 static struct fb_ops omapfb_ops = {
1280 .owner = THIS_MODULE,
1281 .fb_open = omapfb_open,
1282 .fb_release = omapfb_release,
1283 .fb_fillrect = cfb_fillrect,
1284 .fb_copyarea = cfb_copyarea,
1285 .fb_imageblit = cfb_imageblit,
1286 .fb_blank = omapfb_blank,
1287 .fb_ioctl = omapfb_ioctl,
1288 .fb_check_var = omapfb_check_var,
1289 .fb_set_par = omapfb_set_par,
1290 .fb_pan_display = omapfb_pan_display,
1291 .fb_mmap = omapfb_mmap,
1292 .fb_setcolreg = omapfb_setcolreg,
1293 .fb_setcmap = omapfb_setcmap,
1294 /*.fb_write = omapfb_write,*/
1295 };
1296
1297 static void omapfb_free_fbmem(struct fb_info *fbi)
1298 {
1299 struct omapfb_info *ofbi = FB2OFB(fbi);
1300 struct omapfb2_device *fbdev = ofbi->fbdev;
1301 struct omapfb2_mem_region *rg;
1302
1303 rg = &ofbi->region;
1304
1305 if (rg->paddr)
1306 if (omap_vram_free(rg->paddr, rg->size))
1307 dev_err(fbdev->dev, "VRAM FREE failed\n");
1308
1309 if (rg->vaddr)
1310 iounmap(rg->vaddr);
1311
1312 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1313 /* unmap the 0 angle rotation */
1314 if (rg->vrfb.vaddr[0]) {
1315 iounmap(rg->vrfb.vaddr[0]);
1316 omap_vrfb_release_ctx(&rg->vrfb);
1317 rg->vrfb.vaddr[0] = NULL;
1318 }
1319 }
1320
1321 rg->vaddr = NULL;
1322 rg->paddr = 0;
1323 rg->alloc = 0;
1324 rg->size = 0;
1325 }
1326
1327 static void clear_fb_info(struct fb_info *fbi)
1328 {
1329 memset(&fbi->var, 0, sizeof(fbi->var));
1330 memset(&fbi->fix, 0, sizeof(fbi->fix));
1331 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1332 }
1333
1334 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1335 {
1336 int i;
1337
1338 DBG("free all fbmem\n");
1339
1340 for (i = 0; i < fbdev->num_fbs; i++) {
1341 struct fb_info *fbi = fbdev->fbs[i];
1342 omapfb_free_fbmem(fbi);
1343 clear_fb_info(fbi);
1344 }
1345
1346 return 0;
1347 }
1348
1349 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1350 unsigned long paddr)
1351 {
1352 struct omapfb_info *ofbi = FB2OFB(fbi);
1353 struct omapfb2_device *fbdev = ofbi->fbdev;
1354 struct omapfb2_mem_region *rg;
1355 void __iomem *vaddr;
1356 int r;
1357
1358 rg = &ofbi->region;
1359 memset(rg, 0, sizeof(*rg));
1360
1361 size = PAGE_ALIGN(size);
1362
1363 if (!paddr) {
1364 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1365 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1366 } else {
1367 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1368 ofbi->id);
1369 r = omap_vram_reserve(paddr, size);
1370 }
1371
1372 if (r) {
1373 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1374 return -ENOMEM;
1375 }
1376
1377 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1378 vaddr = ioremap_wc(paddr, size);
1379
1380 if (!vaddr) {
1381 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1382 omap_vram_free(paddr, size);
1383 return -ENOMEM;
1384 }
1385
1386 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1387 } else {
1388 r = omap_vrfb_request_ctx(&rg->vrfb);
1389 if (r) {
1390 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1391 return r;
1392 }
1393
1394 vaddr = NULL;
1395 }
1396
1397 rg->paddr = paddr;
1398 rg->vaddr = vaddr;
1399 rg->size = size;
1400 rg->alloc = 1;
1401
1402 return 0;
1403 }
1404
1405 /* allocate fbmem using display resolution as reference */
1406 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1407 unsigned long paddr)
1408 {
1409 struct omapfb_info *ofbi = FB2OFB(fbi);
1410 struct omapfb2_device *fbdev = ofbi->fbdev;
1411 struct omap_dss_device *display;
1412 int bytespp;
1413
1414 display = fb2display(fbi);
1415
1416 if (!display)
1417 return 0;
1418
1419 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1420 case 16:
1421 bytespp = 2;
1422 break;
1423 case 24:
1424 bytespp = 4;
1425 break;
1426 default:
1427 bytespp = 4;
1428 break;
1429 }
1430
1431 if (!size) {
1432 u16 w, h;
1433
1434 display->driver->get_resolution(display, &w, &h);
1435
1436 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1437 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1438 omap_vrfb_min_phys_size(h, w, bytespp));
1439
1440 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1441 w * h * bytespp, size);
1442 } else {
1443 size = w * h * bytespp;
1444 }
1445 }
1446
1447 if (!size)
1448 return 0;
1449
1450 return omapfb_alloc_fbmem(fbi, size, paddr);
1451 }
1452
1453 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1454 {
1455 enum omap_color_mode mode;
1456
1457 switch (fmt) {
1458 case OMAPFB_COLOR_RGB565:
1459 mode = OMAP_DSS_COLOR_RGB16;
1460 break;
1461 case OMAPFB_COLOR_YUV422:
1462 mode = OMAP_DSS_COLOR_YUV2;
1463 break;
1464 case OMAPFB_COLOR_CLUT_8BPP:
1465 mode = OMAP_DSS_COLOR_CLUT8;
1466 break;
1467 case OMAPFB_COLOR_CLUT_4BPP:
1468 mode = OMAP_DSS_COLOR_CLUT4;
1469 break;
1470 case OMAPFB_COLOR_CLUT_2BPP:
1471 mode = OMAP_DSS_COLOR_CLUT2;
1472 break;
1473 case OMAPFB_COLOR_CLUT_1BPP:
1474 mode = OMAP_DSS_COLOR_CLUT1;
1475 break;
1476 case OMAPFB_COLOR_RGB444:
1477 mode = OMAP_DSS_COLOR_RGB12U;
1478 break;
1479 case OMAPFB_COLOR_YUY422:
1480 mode = OMAP_DSS_COLOR_UYVY;
1481 break;
1482 case OMAPFB_COLOR_ARGB16:
1483 mode = OMAP_DSS_COLOR_ARGB16;
1484 break;
1485 case OMAPFB_COLOR_RGB24U:
1486 mode = OMAP_DSS_COLOR_RGB24U;
1487 break;
1488 case OMAPFB_COLOR_RGB24P:
1489 mode = OMAP_DSS_COLOR_RGB24P;
1490 break;
1491 case OMAPFB_COLOR_ARGB32:
1492 mode = OMAP_DSS_COLOR_ARGB32;
1493 break;
1494 case OMAPFB_COLOR_RGBA32:
1495 mode = OMAP_DSS_COLOR_RGBA32;
1496 break;
1497 case OMAPFB_COLOR_RGBX32:
1498 mode = OMAP_DSS_COLOR_RGBX32;
1499 break;
1500 default:
1501 mode = -EINVAL;
1502 }
1503
1504 return mode;
1505 }
1506
1507 static int omapfb_parse_vram_param(const char *param, int max_entries,
1508 unsigned long *sizes, unsigned long *paddrs)
1509 {
1510 int fbnum;
1511 unsigned long size;
1512 unsigned long paddr = 0;
1513 char *p, *start;
1514
1515 start = (char *)param;
1516
1517 while (1) {
1518 p = start;
1519
1520 fbnum = simple_strtoul(p, &p, 10);
1521
1522 if (p == param)
1523 return -EINVAL;
1524
1525 if (*p != ':')
1526 return -EINVAL;
1527
1528 if (fbnum >= max_entries)
1529 return -EINVAL;
1530
1531 size = memparse(p + 1, &p);
1532
1533 if (!size)
1534 return -EINVAL;
1535
1536 paddr = 0;
1537
1538 if (*p == '@') {
1539 paddr = simple_strtoul(p + 1, &p, 16);
1540
1541 if (!paddr)
1542 return -EINVAL;
1543
1544 }
1545
1546 paddrs[fbnum] = paddr;
1547 sizes[fbnum] = size;
1548
1549 if (*p == 0)
1550 break;
1551
1552 if (*p != ',')
1553 return -EINVAL;
1554
1555 ++p;
1556
1557 start = p;
1558 }
1559
1560 return 0;
1561 }
1562
1563 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1564 {
1565 int i, r;
1566 unsigned long vram_sizes[10];
1567 unsigned long vram_paddrs[10];
1568
1569 memset(&vram_sizes, 0, sizeof(vram_sizes));
1570 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1571
1572 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1573 vram_sizes, vram_paddrs)) {
1574 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1575
1576 memset(&vram_sizes, 0, sizeof(vram_sizes));
1577 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1578 }
1579
1580 if (fbdev->dev->platform_data) {
1581 struct omapfb_platform_data *opd;
1582 opd = fbdev->dev->platform_data;
1583 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1584 if (!vram_sizes[i]) {
1585 unsigned long size;
1586 unsigned long paddr;
1587
1588 size = opd->mem_desc.region[i].size;
1589 paddr = opd->mem_desc.region[i].paddr;
1590
1591 vram_sizes[i] = size;
1592 vram_paddrs[i] = paddr;
1593 }
1594 }
1595 }
1596
1597 for (i = 0; i < fbdev->num_fbs; i++) {
1598 /* allocate memory automatically only for fb0, or if
1599 * excplicitly defined with vram or plat data option */
1600 if (i == 0 || vram_sizes[i] != 0) {
1601 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1602 vram_sizes[i], vram_paddrs[i]);
1603
1604 if (r)
1605 return r;
1606 }
1607 }
1608
1609 for (i = 0; i < fbdev->num_fbs; i++) {
1610 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1611 struct omapfb2_mem_region *rg;
1612 rg = &ofbi->region;
1613
1614 DBG("region%d phys %08x virt %p size=%lu\n",
1615 i,
1616 rg->paddr,
1617 rg->vaddr,
1618 rg->size);
1619 }
1620
1621 return 0;
1622 }
1623
1624 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1625 {
1626 struct omapfb_info *ofbi = FB2OFB(fbi);
1627 struct omapfb2_device *fbdev = ofbi->fbdev;
1628 struct omap_dss_device *display = fb2display(fbi);
1629 struct omapfb2_mem_region *rg = &ofbi->region;
1630 unsigned long old_size = rg->size;
1631 unsigned long old_paddr = rg->paddr;
1632 int old_type = rg->type;
1633 int r;
1634
1635 if (type > OMAPFB_MEMTYPE_MAX)
1636 return -EINVAL;
1637
1638 size = PAGE_ALIGN(size);
1639
1640 if (old_size == size && old_type == type)
1641 return 0;
1642
1643 if (display && display->driver->sync)
1644 display->driver->sync(display);
1645
1646 omapfb_free_fbmem(fbi);
1647
1648 if (size == 0) {
1649 clear_fb_info(fbi);
1650 return 0;
1651 }
1652
1653 r = omapfb_alloc_fbmem(fbi, size, 0);
1654
1655 if (r) {
1656 if (old_size)
1657 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1658
1659 if (rg->size == 0)
1660 clear_fb_info(fbi);
1661
1662 return r;
1663 }
1664
1665 if (old_size == size)
1666 return 0;
1667
1668 if (old_size == 0) {
1669 DBG("initializing fb %d\n", ofbi->id);
1670 r = omapfb_fb_init(fbdev, fbi);
1671 if (r) {
1672 DBG("omapfb_fb_init failed\n");
1673 goto err;
1674 }
1675 r = omapfb_apply_changes(fbi, 1);
1676 if (r) {
1677 DBG("omapfb_apply_changes failed\n");
1678 goto err;
1679 }
1680 } else {
1681 struct fb_var_screeninfo new_var;
1682 memcpy(&new_var, &fbi->var, sizeof(new_var));
1683 r = check_fb_var(fbi, &new_var);
1684 if (r)
1685 goto err;
1686 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1687 set_fb_fix(fbi);
1688 r = setup_vrfb_rotation(fbi);
1689 if (r)
1690 goto err;
1691 }
1692
1693 return 0;
1694 err:
1695 omapfb_free_fbmem(fbi);
1696 clear_fb_info(fbi);
1697 return r;
1698 }
1699
1700 /* initialize fb_info, var, fix to something sane based on the display */
1701 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1702 {
1703 struct fb_var_screeninfo *var = &fbi->var;
1704 struct omap_dss_device *display = fb2display(fbi);
1705 struct omapfb_info *ofbi = FB2OFB(fbi);
1706 int r = 0;
1707
1708 fbi->fbops = &omapfb_ops;
1709 fbi->flags = FBINFO_FLAG_DEFAULT;
1710 fbi->pseudo_palette = fbdev->pseudo_palette;
1711
1712 if (ofbi->region.size == 0) {
1713 clear_fb_info(fbi);
1714 return 0;
1715 }
1716
1717 var->nonstd = 0;
1718 var->bits_per_pixel = 0;
1719
1720 var->rotate = def_rotate;
1721
1722 /*
1723 * Check if there is a default color format set in the board file,
1724 * and use this format instead the default deducted from the
1725 * display bpp.
1726 */
1727 if (fbdev->dev->platform_data) {
1728 struct omapfb_platform_data *opd;
1729 int id = ofbi->id;
1730
1731 opd = fbdev->dev->platform_data;
1732 if (opd->mem_desc.region[id].format_used) {
1733 enum omap_color_mode mode;
1734 enum omapfb_color_format format;
1735
1736 format = opd->mem_desc.region[id].format;
1737 mode = fb_format_to_dss_mode(format);
1738 if (mode < 0) {
1739 r = mode;
1740 goto err;
1741 }
1742 r = dss_mode_to_fb_mode(mode, var);
1743 if (r < 0)
1744 goto err;
1745 }
1746 }
1747
1748 if (display) {
1749 u16 w, h;
1750 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1751
1752 display->driver->get_resolution(display, &w, &h);
1753
1754 if (rotation == FB_ROTATE_CW ||
1755 rotation == FB_ROTATE_CCW) {
1756 var->xres = h;
1757 var->yres = w;
1758 } else {
1759 var->xres = w;
1760 var->yres = h;
1761 }
1762
1763 var->xres_virtual = var->xres;
1764 var->yres_virtual = var->yres;
1765
1766 if (!var->bits_per_pixel) {
1767 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1768 case 16:
1769 var->bits_per_pixel = 16;
1770 break;
1771 case 24:
1772 var->bits_per_pixel = 32;
1773 break;
1774 default:
1775 dev_err(fbdev->dev, "illegal display "
1776 "bpp\n");
1777 return -EINVAL;
1778 }
1779 }
1780 } else {
1781 /* if there's no display, let's just guess some basic values */
1782 var->xres = 320;
1783 var->yres = 240;
1784 var->xres_virtual = var->xres;
1785 var->yres_virtual = var->yres;
1786 if (!var->bits_per_pixel)
1787 var->bits_per_pixel = 16;
1788 }
1789
1790 r = check_fb_var(fbi, var);
1791 if (r)
1792 goto err;
1793
1794 set_fb_fix(fbi);
1795 r = setup_vrfb_rotation(fbi);
1796 if (r)
1797 goto err;
1798
1799 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1800 if (r)
1801 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1802
1803 err:
1804 return r;
1805 }
1806
1807 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1808 {
1809 fb_dealloc_cmap(&fbi->cmap);
1810 }
1811
1812
1813 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1814 {
1815 int i;
1816
1817 DBG("free_resources\n");
1818
1819 if (fbdev == NULL)
1820 return;
1821
1822 for (i = 0; i < fbdev->num_fbs; i++)
1823 unregister_framebuffer(fbdev->fbs[i]);
1824
1825 /* free the reserved fbmem */
1826 omapfb_free_all_fbmem(fbdev);
1827
1828 for (i = 0; i < fbdev->num_fbs; i++) {
1829 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1830 framebuffer_release(fbdev->fbs[i]);
1831 }
1832
1833 for (i = 0; i < fbdev->num_displays; i++) {
1834 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1835 fbdev->displays[i]->driver->disable(fbdev->displays[i]);
1836
1837 omap_dss_put_device(fbdev->displays[i]);
1838 }
1839
1840 dev_set_drvdata(fbdev->dev, NULL);
1841 kfree(fbdev);
1842 }
1843
1844 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1845 {
1846 int r, i;
1847
1848 fbdev->num_fbs = 0;
1849
1850 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1851
1852 /* allocate fb_infos */
1853 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1854 struct fb_info *fbi;
1855 struct omapfb_info *ofbi;
1856
1857 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1858 fbdev->dev);
1859
1860 if (fbi == NULL) {
1861 dev_err(fbdev->dev,
1862 "unable to allocate memory for plane info\n");
1863 return -ENOMEM;
1864 }
1865
1866 clear_fb_info(fbi);
1867
1868 fbdev->fbs[i] = fbi;
1869
1870 ofbi = FB2OFB(fbi);
1871 ofbi->fbdev = fbdev;
1872 ofbi->id = i;
1873
1874 /* assign these early, so that fb alloc can use them */
1875 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1876 OMAP_DSS_ROT_DMA;
1877 ofbi->mirror = def_mirror;
1878
1879 fbdev->num_fbs++;
1880 }
1881
1882 DBG("fb_infos allocated\n");
1883
1884 /* assign overlays for the fbs */
1885 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1886 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1887
1888 ofbi->overlays[0] = fbdev->overlays[i];
1889 ofbi->num_overlays = 1;
1890 }
1891
1892 /* allocate fb memories */
1893 r = omapfb_allocate_all_fbs(fbdev);
1894 if (r) {
1895 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1896 return r;
1897 }
1898
1899 DBG("fbmems allocated\n");
1900
1901 /* setup fb_infos */
1902 for (i = 0; i < fbdev->num_fbs; i++) {
1903 r = omapfb_fb_init(fbdev, fbdev->fbs[i]);
1904 if (r) {
1905 dev_err(fbdev->dev, "failed to setup fb_info\n");
1906 return r;
1907 }
1908 }
1909
1910 DBG("fb_infos initialized\n");
1911
1912 for (i = 0; i < fbdev->num_fbs; i++) {
1913 r = register_framebuffer(fbdev->fbs[i]);
1914 if (r != 0) {
1915 dev_err(fbdev->dev,
1916 "registering framebuffer %d failed\n", i);
1917 return r;
1918 }
1919 }
1920
1921 DBG("framebuffers registered\n");
1922
1923 for (i = 0; i < fbdev->num_fbs; i++) {
1924 r = omapfb_apply_changes(fbdev->fbs[i], 1);
1925 if (r) {
1926 dev_err(fbdev->dev, "failed to change mode\n");
1927 return r;
1928 }
1929 }
1930
1931 DBG("create sysfs for fbs\n");
1932 r = omapfb_create_sysfs(fbdev);
1933 if (r) {
1934 dev_err(fbdev->dev, "failed to create sysfs entries\n");
1935 return r;
1936 }
1937
1938 /* Enable fb0 */
1939 if (fbdev->num_fbs > 0) {
1940 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1941
1942 if (ofbi->num_overlays > 0) {
1943 struct omap_overlay *ovl = ofbi->overlays[0];
1944
1945 r = omapfb_overlay_enable(ovl, 1);
1946
1947 if (r) {
1948 dev_err(fbdev->dev,
1949 "failed to enable overlay\n");
1950 return r;
1951 }
1952 }
1953 }
1954
1955 DBG("create_framebuffers done\n");
1956
1957 return 0;
1958 }
1959
1960 static int omapfb_mode_to_timings(const char *mode_str,
1961 struct omap_video_timings *timings, u8 *bpp)
1962 {
1963 struct fb_info fbi;
1964 struct fb_var_screeninfo var;
1965 struct fb_ops fbops;
1966 int r;
1967
1968 #ifdef CONFIG_OMAP2_DSS_VENC
1969 if (strcmp(mode_str, "pal") == 0) {
1970 *timings = omap_dss_pal_timings;
1971 *bpp = 0;
1972 return 0;
1973 } else if (strcmp(mode_str, "ntsc") == 0) {
1974 *timings = omap_dss_ntsc_timings;
1975 *bpp = 0;
1976 return 0;
1977 }
1978 #endif
1979
1980 /* this is quite a hack, but I wanted to use the modedb and for
1981 * that we need fb_info and var, so we create dummy ones */
1982
1983 memset(&fbi, 0, sizeof(fbi));
1984 memset(&var, 0, sizeof(var));
1985 memset(&fbops, 0, sizeof(fbops));
1986 fbi.fbops = &fbops;
1987
1988 r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
1989
1990 if (r != 0) {
1991 timings->pixel_clock = PICOS2KHZ(var.pixclock);
1992 timings->hfp = var.left_margin;
1993 timings->hbp = var.right_margin;
1994 timings->vfp = var.upper_margin;
1995 timings->vbp = var.lower_margin;
1996 timings->hsw = var.hsync_len;
1997 timings->vsw = var.vsync_len;
1998 timings->x_res = var.xres;
1999 timings->y_res = var.yres;
2000
2001 switch (var.bits_per_pixel) {
2002 case 16:
2003 *bpp = 16;
2004 break;
2005 case 24:
2006 case 32:
2007 default:
2008 *bpp = 24;
2009 break;
2010 }
2011
2012 return 0;
2013 } else {
2014 return -EINVAL;
2015 }
2016 }
2017
2018 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2019 struct omap_dss_device *display, char *mode_str)
2020 {
2021 int r;
2022 u8 bpp;
2023 struct omap_video_timings timings;
2024
2025 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2026 if (r)
2027 return r;
2028
2029 fbdev->bpp_overrides[fbdev->num_bpp_overrides].dssdev = display;
2030 fbdev->bpp_overrides[fbdev->num_bpp_overrides].bpp = bpp;
2031 ++fbdev->num_bpp_overrides;
2032
2033 if (!display->driver->check_timings || !display->driver->set_timings)
2034 return -EINVAL;
2035
2036 r = display->driver->check_timings(display, &timings);
2037 if (r)
2038 return r;
2039
2040 display->driver->set_timings(display, &timings);
2041
2042 return 0;
2043 }
2044
2045 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2046 struct omap_dss_device *dssdev)
2047 {
2048 int i;
2049
2050 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2051
2052 for (i = 0; i < fbdev->num_bpp_overrides; ++i) {
2053 if (dssdev == fbdev->bpp_overrides[i].dssdev)
2054 return fbdev->bpp_overrides[i].bpp;
2055 }
2056
2057 return dssdev->driver->get_recommended_bpp(dssdev);
2058 }
2059
2060 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2061 {
2062 char *str, *options, *this_opt;
2063 int r = 0;
2064
2065 str = kmalloc(strlen(def_mode) + 1, GFP_KERNEL);
2066 strcpy(str, def_mode);
2067 options = str;
2068
2069 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2070 char *p, *display_str, *mode_str;
2071 struct omap_dss_device *display;
2072 int i;
2073
2074 p = strchr(this_opt, ':');
2075 if (!p) {
2076 r = -EINVAL;
2077 break;
2078 }
2079
2080 *p = 0;
2081 display_str = this_opt;
2082 mode_str = p + 1;
2083
2084 display = NULL;
2085 for (i = 0; i < fbdev->num_displays; ++i) {
2086 if (strcmp(fbdev->displays[i]->name,
2087 display_str) == 0) {
2088 display = fbdev->displays[i];
2089 break;
2090 }
2091 }
2092
2093 if (!display) {
2094 r = -EINVAL;
2095 break;
2096 }
2097
2098 r = omapfb_set_def_mode(fbdev, display, mode_str);
2099 if (r)
2100 break;
2101 }
2102
2103 kfree(str);
2104
2105 return r;
2106 }
2107
2108 static int omapfb_probe(struct platform_device *pdev)
2109 {
2110 struct omapfb2_device *fbdev = NULL;
2111 int r = 0;
2112 int i;
2113 struct omap_overlay *ovl;
2114 struct omap_dss_device *def_display;
2115 struct omap_dss_device *dssdev;
2116
2117 DBG("omapfb_probe\n");
2118
2119 if (pdev->num_resources != 0) {
2120 dev_err(&pdev->dev, "probed for an unknown device\n");
2121 r = -ENODEV;
2122 goto err0;
2123 }
2124
2125 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2126 if (fbdev == NULL) {
2127 r = -ENOMEM;
2128 goto err0;
2129 }
2130
2131 mutex_init(&fbdev->mtx);
2132
2133 fbdev->dev = &pdev->dev;
2134 platform_set_drvdata(pdev, fbdev);
2135
2136 r = 0;
2137 fbdev->num_displays = 0;
2138 dssdev = NULL;
2139 for_each_dss_dev(dssdev) {
2140 omap_dss_get_device(dssdev);
2141
2142 if (!dssdev->driver) {
2143 dev_err(&pdev->dev, "no driver for display\n");
2144 r = -ENODEV;
2145 }
2146
2147 fbdev->displays[fbdev->num_displays++] = dssdev;
2148 }
2149
2150 if (r)
2151 goto cleanup;
2152
2153 if (fbdev->num_displays == 0) {
2154 dev_err(&pdev->dev, "no displays\n");
2155 r = -EINVAL;
2156 goto cleanup;
2157 }
2158
2159 fbdev->num_overlays = omap_dss_get_num_overlays();
2160 for (i = 0; i < fbdev->num_overlays; i++)
2161 fbdev->overlays[i] = omap_dss_get_overlay(i);
2162
2163 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2164 for (i = 0; i < fbdev->num_managers; i++)
2165 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2166
2167 if (def_mode && strlen(def_mode) > 0) {
2168 if (omapfb_parse_def_modes(fbdev))
2169 dev_warn(&pdev->dev, "cannot parse default modes\n");
2170 }
2171
2172 r = omapfb_create_framebuffers(fbdev);
2173 if (r)
2174 goto cleanup;
2175
2176 for (i = 0; i < fbdev->num_managers; i++) {
2177 struct omap_overlay_manager *mgr;
2178 mgr = fbdev->managers[i];
2179 r = mgr->apply(mgr);
2180 if (r)
2181 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2182 }
2183
2184 DBG("mgr->apply'ed\n");
2185
2186 /* gfx overlay should be the default one. find a display
2187 * connected to that, and use it as default display */
2188 ovl = omap_dss_get_overlay(0);
2189 if (ovl->manager && ovl->manager->device) {
2190 def_display = ovl->manager->device;
2191 } else {
2192 dev_warn(&pdev->dev, "cannot find default display\n");
2193 def_display = NULL;
2194 }
2195
2196 if (def_display) {
2197 struct omap_dss_driver *dssdrv = def_display->driver;
2198
2199 r = def_display->driver->enable(def_display);
2200 if (r) {
2201 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2202 def_display->name);
2203 goto cleanup;
2204 }
2205
2206 if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2207 u16 w, h;
2208 if (dssdrv->enable_te)
2209 dssdrv->enable_te(def_display, 1);
2210 if (dssdrv->set_update_mode)
2211 dssdrv->set_update_mode(def_display,
2212 OMAP_DSS_UPDATE_MANUAL);
2213
2214 dssdrv->get_resolution(def_display, &w, &h);
2215 def_display->driver->update(def_display, 0, 0, w, h);
2216 } else {
2217 if (dssdrv->set_update_mode)
2218 dssdrv->set_update_mode(def_display,
2219 OMAP_DSS_UPDATE_AUTO);
2220 }
2221 }
2222
2223 return 0;
2224
2225 cleanup:
2226 omapfb_free_resources(fbdev);
2227 err0:
2228 dev_err(&pdev->dev, "failed to setup omapfb\n");
2229 return r;
2230 }
2231
2232 static int omapfb_remove(struct platform_device *pdev)
2233 {
2234 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2235
2236 /* FIXME: wait till completion of pending events */
2237
2238 omapfb_remove_sysfs(fbdev);
2239
2240 omapfb_free_resources(fbdev);
2241
2242 return 0;
2243 }
2244
2245 static struct platform_driver omapfb_driver = {
2246 .probe = omapfb_probe,
2247 .remove = omapfb_remove,
2248 .driver = {
2249 .name = "omapfb",
2250 .owner = THIS_MODULE,
2251 },
2252 };
2253
2254 static int __init omapfb_init(void)
2255 {
2256 DBG("omapfb_init\n");
2257
2258 if (platform_driver_register(&omapfb_driver)) {
2259 printk(KERN_ERR "failed to register omapfb driver\n");
2260 return -ENODEV;
2261 }
2262
2263 return 0;
2264 }
2265
2266 static void __exit omapfb_exit(void)
2267 {
2268 DBG("omapfb_exit\n");
2269 platform_driver_unregister(&omapfb_driver);
2270 }
2271
2272 module_param_named(mode, def_mode, charp, 0);
2273 module_param_named(vram, def_vram, charp, 0);
2274 module_param_named(rotate, def_rotate, int, 0);
2275 module_param_named(vrfb, def_vrfb, bool, 0);
2276 module_param_named(mirror, def_mirror, bool, 0);
2277
2278 /* late_initcall to let panel/ctrl drivers loaded first.
2279 * I guess better option would be a more dynamic approach,
2280 * so that omapfb reacts to new panels when they are loaded */
2281 late_initcall(omapfb_init);
2282 /*module_init(omapfb_init);*/
2283 module_exit(omapfb_exit);
2284
2285 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2286 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2287 MODULE_LICENSE("GPL v2");
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