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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 <video/omapdss.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
44static char *def_mode;
45static char *def_vram;
46static bool def_vrfb;
47static int def_rotate;
48static bool def_mirror;
49static bool auto_update;
50static unsigned int auto_update_freq;
51module_param(auto_update, bool, 0);
52module_param(auto_update_freq, uint, 0644);
53
54#ifdef DEBUG
55bool omapfb_debug;
56module_param_named(debug, omapfb_debug, bool, 0644);
57static bool omapfb_test_pattern;
58module_param_named(test, omapfb_test_pattern, bool, 0644);
59#endif
60
61static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
62static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
63 struct omap_dss_device *dssdev);
64
65#ifdef DEBUG
66static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
67{
68 struct fb_var_screeninfo *var = &fbi->var;
69 struct fb_fix_screeninfo *fix = &fbi->fix;
70 void __iomem *addr = fbi->screen_base;
71 const unsigned bytespp = var->bits_per_pixel >> 3;
72 const unsigned line_len = fix->line_length / bytespp;
73
74 int r = (color >> 16) & 0xff;
75 int g = (color >> 8) & 0xff;
76 int b = (color >> 0) & 0xff;
77
78 if (var->bits_per_pixel == 16) {
79 u16 __iomem *p = (u16 __iomem *)addr;
80 p += y * line_len + x;
81
82 r = r * 32 / 256;
83 g = g * 64 / 256;
84 b = b * 32 / 256;
85
86 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
87 } else if (var->bits_per_pixel == 24) {
88 u8 __iomem *p = (u8 __iomem *)addr;
89 p += (y * line_len + x) * 3;
90
91 __raw_writeb(b, p + 0);
92 __raw_writeb(g, p + 1);
93 __raw_writeb(r, p + 2);
94 } else if (var->bits_per_pixel == 32) {
95 u32 __iomem *p = (u32 __iomem *)addr;
96 p += y * line_len + x;
97 __raw_writel(color, p);
98 }
99}
100
101static void fill_fb(struct fb_info *fbi)
102{
103 struct fb_var_screeninfo *var = &fbi->var;
104 const short w = var->xres_virtual;
105 const short h = var->yres_virtual;
106 void __iomem *addr = fbi->screen_base;
107 int y, x;
108
109 if (!addr)
110 return;
111
112 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
113
114 for (y = 0; y < h; y++) {
115 for (x = 0; x < w; x++) {
116 if (x < 20 && y < 20)
117 draw_pixel(fbi, x, y, 0xffffff);
118 else if (x < 20 && (y > 20 && y < h - 20))
119 draw_pixel(fbi, x, y, 0xff);
120 else if (y < 20 && (x > 20 && x < w - 20))
121 draw_pixel(fbi, x, y, 0xff00);
122 else if (x > w - 20 && (y > 20 && y < h - 20))
123 draw_pixel(fbi, x, y, 0xff0000);
124 else if (y > h - 20 && (x > 20 && x < w - 20))
125 draw_pixel(fbi, x, y, 0xffff00);
126 else if (x == 20 || x == w - 20 ||
127 y == 20 || y == h - 20)
128 draw_pixel(fbi, x, y, 0xffffff);
129 else if (x == y || w - x == h - y)
130 draw_pixel(fbi, x, y, 0xff00ff);
131 else if (w - x == y || x == h - y)
132 draw_pixel(fbi, x, y, 0x00ffff);
133 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
134 int t = x * 3 / w;
135 unsigned r = 0, g = 0, b = 0;
136 unsigned c;
137 if (var->bits_per_pixel == 16) {
138 if (t == 0)
139 b = (y % 32) * 256 / 32;
140 else if (t == 1)
141 g = (y % 64) * 256 / 64;
142 else if (t == 2)
143 r = (y % 32) * 256 / 32;
144 } else {
145 if (t == 0)
146 b = (y % 256);
147 else if (t == 1)
148 g = (y % 256);
149 else if (t == 2)
150 r = (y % 256);
151 }
152 c = (r << 16) | (g << 8) | (b << 0);
153 draw_pixel(fbi, x, y, c);
154 } else {
155 draw_pixel(fbi, x, y, 0);
156 }
157 }
158 }
159}
160#endif
161
162static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
163{
164 const struct vrfb *vrfb = &ofbi->region->vrfb;
165 unsigned offset;
166
167 switch (rot) {
168 case FB_ROTATE_UR:
169 offset = 0;
170 break;
171 case FB_ROTATE_CW:
172 offset = vrfb->yoffset;
173 break;
174 case FB_ROTATE_UD:
175 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
176 break;
177 case FB_ROTATE_CCW:
178 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
179 break;
180 default:
181 BUG();
182 }
183
184 offset *= vrfb->bytespp;
185
186 return offset;
187}
188
189static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
190{
191 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
192 return ofbi->region->vrfb.paddr[rot]
193 + omapfb_get_vrfb_offset(ofbi, rot);
194 } else {
195 return ofbi->region->paddr;
196 }
197}
198
199static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
200{
201 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
202 return ofbi->region->vrfb.paddr[0];
203 else
204 return ofbi->region->paddr;
205}
206
207static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
208{
209 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
210 return ofbi->region->vrfb.vaddr[0];
211 else
212 return ofbi->region->vaddr;
213}
214
215static struct omapfb_colormode omapfb_colormodes[] = {
216 {
217 .dssmode = OMAP_DSS_COLOR_UYVY,
218 .bits_per_pixel = 16,
219 .nonstd = OMAPFB_COLOR_YUV422,
220 }, {
221 .dssmode = OMAP_DSS_COLOR_YUV2,
222 .bits_per_pixel = 16,
223 .nonstd = OMAPFB_COLOR_YUY422,
224 }, {
225 .dssmode = OMAP_DSS_COLOR_ARGB16,
226 .bits_per_pixel = 16,
227 .red = { .length = 4, .offset = 8, .msb_right = 0 },
228 .green = { .length = 4, .offset = 4, .msb_right = 0 },
229 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
230 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
231 }, {
232 .dssmode = OMAP_DSS_COLOR_RGB16,
233 .bits_per_pixel = 16,
234 .red = { .length = 5, .offset = 11, .msb_right = 0 },
235 .green = { .length = 6, .offset = 5, .msb_right = 0 },
236 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
237 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
238 }, {
239 .dssmode = OMAP_DSS_COLOR_RGB24P,
240 .bits_per_pixel = 24,
241 .red = { .length = 8, .offset = 16, .msb_right = 0 },
242 .green = { .length = 8, .offset = 8, .msb_right = 0 },
243 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
244 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
245 }, {
246 .dssmode = OMAP_DSS_COLOR_RGB24U,
247 .bits_per_pixel = 32,
248 .red = { .length = 8, .offset = 16, .msb_right = 0 },
249 .green = { .length = 8, .offset = 8, .msb_right = 0 },
250 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
251 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
252 }, {
253 .dssmode = OMAP_DSS_COLOR_ARGB32,
254 .bits_per_pixel = 32,
255 .red = { .length = 8, .offset = 16, .msb_right = 0 },
256 .green = { .length = 8, .offset = 8, .msb_right = 0 },
257 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
258 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
259 }, {
260 .dssmode = OMAP_DSS_COLOR_RGBA32,
261 .bits_per_pixel = 32,
262 .red = { .length = 8, .offset = 24, .msb_right = 0 },
263 .green = { .length = 8, .offset = 16, .msb_right = 0 },
264 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
265 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
266 }, {
267 .dssmode = OMAP_DSS_COLOR_RGBX32,
268 .bits_per_pixel = 32,
269 .red = { .length = 8, .offset = 24, .msb_right = 0 },
270 .green = { .length = 8, .offset = 16, .msb_right = 0 },
271 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
272 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
273 },
274};
275
276static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
277 struct omapfb_colormode *color)
278{
279 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
280 {
281 return f1->length == f2->length &&
282 f1->offset == f2->offset &&
283 f1->msb_right == f2->msb_right;
284 }
285
286 if (var->bits_per_pixel == 0 ||
287 var->red.length == 0 ||
288 var->blue.length == 0 ||
289 var->green.length == 0)
290 return 0;
291
292 return var->bits_per_pixel == color->bits_per_pixel &&
293 cmp_component(&var->red, &color->red) &&
294 cmp_component(&var->green, &color->green) &&
295 cmp_component(&var->blue, &color->blue) &&
296 cmp_component(&var->transp, &color->transp);
297}
298
299static void assign_colormode_to_var(struct fb_var_screeninfo *var,
300 struct omapfb_colormode *color)
301{
302 var->bits_per_pixel = color->bits_per_pixel;
303 var->nonstd = color->nonstd;
304 var->red = color->red;
305 var->green = color->green;
306 var->blue = color->blue;
307 var->transp = color->transp;
308}
309
310static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
311 enum omap_color_mode *mode)
312{
313 enum omap_color_mode dssmode;
314 int i;
315
316
317 if (var->nonstd) {
318 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
319 struct omapfb_colormode *m = &omapfb_colormodes[i];
320 if (var->nonstd == m->nonstd) {
321 assign_colormode_to_var(var, m);
322 *mode = m->dssmode;
323 return 0;
324 }
325 }
326
327 return -EINVAL;
328 }
329
330
331 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
332 struct omapfb_colormode *m = &omapfb_colormodes[i];
333 if (cmp_var_to_colormode(var, m)) {
334 assign_colormode_to_var(var, m);
335 *mode = m->dssmode;
336 return 0;
337 }
338 }
339
340
341
342 switch (var->bits_per_pixel) {
343 case 1:
344 dssmode = OMAP_DSS_COLOR_CLUT1;
345 break;
346 case 2:
347 dssmode = OMAP_DSS_COLOR_CLUT2;
348 break;
349 case 4:
350 dssmode = OMAP_DSS_COLOR_CLUT4;
351 break;
352 case 8:
353 dssmode = OMAP_DSS_COLOR_CLUT8;
354 break;
355 case 12:
356 dssmode = OMAP_DSS_COLOR_RGB12U;
357 break;
358 case 16:
359 dssmode = OMAP_DSS_COLOR_RGB16;
360 break;
361 case 24:
362 dssmode = OMAP_DSS_COLOR_RGB24P;
363 break;
364 case 32:
365 dssmode = OMAP_DSS_COLOR_RGB24U;
366 break;
367 default:
368 return -EINVAL;
369 }
370
371 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
372 struct omapfb_colormode *m = &omapfb_colormodes[i];
373 if (dssmode == m->dssmode) {
374 assign_colormode_to_var(var, m);
375 *mode = m->dssmode;
376 return 0;
377 }
378 }
379
380 return -EINVAL;
381}
382
383static int check_fb_res_bounds(struct fb_var_screeninfo *var)
384{
385 int xres_min = OMAPFB_PLANE_XRES_MIN;
386 int xres_max = 2048;
387 int yres_min = OMAPFB_PLANE_YRES_MIN;
388 int yres_max = 2048;
389
390
391 if (var->xres_virtual == 0)
392 var->xres_virtual = var->xres;
393
394 if (var->yres_virtual == 0)
395 var->yres_virtual = var->yres;
396
397 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
398 return -EINVAL;
399
400 if (var->xres < xres_min)
401 var->xres = xres_min;
402 if (var->yres < yres_min)
403 var->yres = yres_min;
404 if (var->xres > xres_max)
405 var->xres = xres_max;
406 if (var->yres > yres_max)
407 var->yres = yres_max;
408
409 if (var->xres > var->xres_virtual)
410 var->xres = var->xres_virtual;
411 if (var->yres > var->yres_virtual)
412 var->yres = var->yres_virtual;
413
414 return 0;
415}
416
417static void shrink_height(unsigned long max_frame_size,
418 struct fb_var_screeninfo *var)
419{
420 DBG("can't fit FB into memory, reducing y\n");
421 var->yres_virtual = max_frame_size /
422 (var->xres_virtual * var->bits_per_pixel >> 3);
423
424 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
425 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
426
427 if (var->yres > var->yres_virtual)
428 var->yres = var->yres_virtual;
429}
430
431static void shrink_width(unsigned long max_frame_size,
432 struct fb_var_screeninfo *var)
433{
434 DBG("can't fit FB into memory, reducing x\n");
435 var->xres_virtual = max_frame_size / var->yres_virtual /
436 (var->bits_per_pixel >> 3);
437
438 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
439 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
440
441 if (var->xres > var->xres_virtual)
442 var->xres = var->xres_virtual;
443}
444
445static int check_vrfb_fb_size(unsigned long region_size,
446 const struct fb_var_screeninfo *var)
447{
448 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
449 var->yres_virtual, var->bits_per_pixel >> 3);
450
451 return min_phys_size > region_size ? -EINVAL : 0;
452}
453
454static int check_fb_size(const struct omapfb_info *ofbi,
455 struct fb_var_screeninfo *var)
456{
457 unsigned long max_frame_size = ofbi->region->size;
458 int bytespp = var->bits_per_pixel >> 3;
459 unsigned long line_size = var->xres_virtual * bytespp;
460
461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
462
463 if (check_vrfb_fb_size(max_frame_size, var))
464 shrink_height(omap_vrfb_max_height(
465 max_frame_size, var->xres_virtual, bytespp) *
466 line_size, var);
467
468 if (check_vrfb_fb_size(max_frame_size, var)) {
469 DBG("cannot fit FB to memory\n");
470 return -EINVAL;
471 }
472
473 return 0;
474 }
475
476 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
477
478 if (line_size * var->yres_virtual > max_frame_size)
479 shrink_height(max_frame_size, var);
480
481 if (line_size * var->yres_virtual > max_frame_size) {
482 shrink_width(max_frame_size, var);
483 line_size = var->xres_virtual * bytespp;
484 }
485
486 if (line_size * var->yres_virtual > max_frame_size) {
487 DBG("cannot fit FB to memory\n");
488 return -EINVAL;
489 }
490
491 return 0;
492}
493
494
495
496
497
498
499
500
501static int setup_vrfb_rotation(struct fb_info *fbi)
502{
503 struct omapfb_info *ofbi = FB2OFB(fbi);
504 struct omapfb2_mem_region *rg = ofbi->region;
505 struct vrfb *vrfb = &rg->vrfb;
506 struct fb_var_screeninfo *var = &fbi->var;
507 struct fb_fix_screeninfo *fix = &fbi->fix;
508 unsigned bytespp;
509 bool yuv_mode;
510 enum omap_color_mode mode;
511 int r;
512 bool reconf;
513
514 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
515 return 0;
516
517 DBG("setup_vrfb_rotation\n");
518
519 r = fb_mode_to_dss_mode(var, &mode);
520 if (r)
521 return r;
522
523 bytespp = var->bits_per_pixel >> 3;
524
525 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
526
527
528
529
530
531
532 reconf = false;
533
534 if (yuv_mode != vrfb->yuv_mode)
535 reconf = true;
536 else if (bytespp != vrfb->bytespp)
537 reconf = true;
538 else if (vrfb->xres != var->xres_virtual ||
539 vrfb->yres != var->yres_virtual)
540 reconf = true;
541
542 if (vrfb->vaddr[0] && reconf) {
543 fbi->screen_base = NULL;
544 fix->smem_start = 0;
545 fix->smem_len = 0;
546 iounmap(vrfb->vaddr[0]);
547 vrfb->vaddr[0] = NULL;
548 DBG("setup_vrfb_rotation: reset fb\n");
549 }
550
551 if (vrfb->vaddr[0])
552 return 0;
553
554 omap_vrfb_setup(&rg->vrfb, rg->paddr,
555 var->xres_virtual,
556 var->yres_virtual,
557 bytespp, yuv_mode);
558
559
560 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
561 if (r)
562 return r;
563
564
565 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
566
567 fix->smem_start = ofbi->region->vrfb.paddr[0];
568
569 switch (var->nonstd) {
570 case OMAPFB_COLOR_YUV422:
571 case OMAPFB_COLOR_YUY422:
572 fix->line_length =
573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
574 break;
575 default:
576 fix->line_length =
577 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
578 break;
579 }
580
581 fix->smem_len = var->yres_virtual * fix->line_length;
582
583 return 0;
584}
585
586int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
587 struct fb_var_screeninfo *var)
588{
589 int i;
590
591 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
592 struct omapfb_colormode *mode = &omapfb_colormodes[i];
593 if (dssmode == mode->dssmode) {
594 assign_colormode_to_var(var, mode);
595 return 0;
596 }
597 }
598 return -ENOENT;
599}
600
601void set_fb_fix(struct fb_info *fbi)
602{
603 struct fb_fix_screeninfo *fix = &fbi->fix;
604 struct fb_var_screeninfo *var = &fbi->var;
605 struct omapfb_info *ofbi = FB2OFB(fbi);
606 struct omapfb2_mem_region *rg = ofbi->region;
607
608 DBG("set_fb_fix\n");
609
610
611 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
612
613
614 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
615 switch (var->nonstd) {
616 case OMAPFB_COLOR_YUV422:
617 case OMAPFB_COLOR_YUY422:
618 fix->line_length =
619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
620 break;
621 default:
622 fix->line_length =
623 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
624 break;
625 }
626
627 fix->smem_len = var->yres_virtual * fix->line_length;
628 } else {
629 fix->line_length =
630 (var->xres_virtual * var->bits_per_pixel) >> 3;
631 fix->smem_len = rg->size;
632 }
633
634 fix->smem_start = omapfb_get_region_paddr(ofbi);
635
636 fix->type = FB_TYPE_PACKED_PIXELS;
637
638 if (var->nonstd)
639 fix->visual = FB_VISUAL_PSEUDOCOLOR;
640 else {
641 switch (var->bits_per_pixel) {
642 case 32:
643 case 24:
644 case 16:
645 case 12:
646 fix->visual = FB_VISUAL_TRUECOLOR;
647
648 break;
649 case 1:
650 case 2:
651 case 4:
652 case 8:
653 fix->visual = FB_VISUAL_PSEUDOCOLOR;
654 break;
655 }
656 }
657
658 fix->accel = FB_ACCEL_NONE;
659
660 fix->xpanstep = 1;
661 fix->ypanstep = 1;
662}
663
664
665int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
666{
667 struct omapfb_info *ofbi = FB2OFB(fbi);
668 struct omap_dss_device *display = fb2display(fbi);
669 enum omap_color_mode mode = 0;
670 int i;
671 int r;
672
673 DBG("check_fb_var %d\n", ofbi->id);
674
675 WARN_ON(!atomic_read(&ofbi->region->lock_count));
676
677 r = fb_mode_to_dss_mode(var, &mode);
678 if (r) {
679 DBG("cannot convert var to omap dss mode\n");
680 return r;
681 }
682
683 for (i = 0; i < ofbi->num_overlays; ++i) {
684 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
685 DBG("invalid mode\n");
686 return -EINVAL;
687 }
688 }
689
690 if (var->rotate > 3)
691 return -EINVAL;
692
693 if (check_fb_res_bounds(var))
694 return -EINVAL;
695
696
697 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
698 return -EINVAL;
699
700 if (var->xres + var->xoffset > var->xres_virtual)
701 var->xoffset = var->xres_virtual - var->xres;
702 if (var->yres + var->yoffset > var->yres_virtual)
703 var->yoffset = var->yres_virtual - var->yres;
704
705 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
706 var->xres, var->yres,
707 var->xres_virtual, var->yres_virtual);
708
709 if (display && display->driver->get_dimensions) {
710 u32 w, h;
711 display->driver->get_dimensions(display, &w, &h);
712 var->width = DIV_ROUND_CLOSEST(w, 1000);
713 var->height = DIV_ROUND_CLOSEST(h, 1000);
714 } else {
715 var->height = -1;
716 var->width = -1;
717 }
718
719 var->grayscale = 0;
720
721 if (display && display->driver->get_timings) {
722 struct omap_video_timings timings;
723 display->driver->get_timings(display, &timings);
724
725
726 var->pixclock = timings.pixel_clock != 0 ?
727 KHZ2PICOS(timings.pixel_clock) :
728 0;
729 var->left_margin = timings.hbp;
730 var->right_margin = timings.hfp;
731 var->upper_margin = timings.vbp;
732 var->lower_margin = timings.vfp;
733 var->hsync_len = timings.hsw;
734 var->vsync_len = timings.vsw;
735 } else {
736 var->pixclock = 0;
737 var->left_margin = 0;
738 var->right_margin = 0;
739 var->upper_margin = 0;
740 var->lower_margin = 0;
741 var->hsync_len = 0;
742 var->vsync_len = 0;
743 }
744
745
746 var->vmode = FB_VMODE_NONINTERLACED;
747 var->sync = 0;
748
749 return 0;
750}
751
752
753
754
755
756
757static int omapfb_open(struct fb_info *fbi, int user)
758{
759 return 0;
760}
761
762static int omapfb_release(struct fb_info *fbi, int user)
763{
764 return 0;
765}
766
767static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
768 const struct fb_fix_screeninfo *fix, int rotation)
769{
770 unsigned offset;
771
772 offset = var->yoffset * fix->line_length +
773 var->xoffset * (var->bits_per_pixel >> 3);
774
775 return offset;
776}
777
778static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
779 const struct fb_fix_screeninfo *fix, int rotation)
780{
781 unsigned offset;
782
783 if (rotation == FB_ROTATE_UD)
784 offset = (var->yres_virtual - var->yres) *
785 fix->line_length;
786 else if (rotation == FB_ROTATE_CW)
787 offset = (var->yres_virtual - var->yres) *
788 (var->bits_per_pixel >> 3);
789 else
790 offset = 0;
791
792 if (rotation == FB_ROTATE_UR)
793 offset += var->yoffset * fix->line_length +
794 var->xoffset * (var->bits_per_pixel >> 3);
795 else if (rotation == FB_ROTATE_UD)
796 offset -= var->yoffset * fix->line_length +
797 var->xoffset * (var->bits_per_pixel >> 3);
798 else if (rotation == FB_ROTATE_CW)
799 offset -= var->xoffset * fix->line_length +
800 var->yoffset * (var->bits_per_pixel >> 3);
801 else if (rotation == FB_ROTATE_CCW)
802 offset += var->xoffset * fix->line_length +
803 var->yoffset * (var->bits_per_pixel >> 3);
804
805 return offset;
806}
807
808static void omapfb_calc_addr(const struct omapfb_info *ofbi,
809 const struct fb_var_screeninfo *var,
810 const struct fb_fix_screeninfo *fix,
811 int rotation, u32 *paddr)
812{
813 u32 data_start_p;
814 int offset;
815
816 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
817 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
818 else
819 data_start_p = omapfb_get_region_paddr(ofbi);
820
821 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
822 offset = calc_rotation_offset_vrfb(var, fix, rotation);
823 else
824 offset = calc_rotation_offset_dma(var, fix, rotation);
825
826 data_start_p += offset;
827
828 if (offset)
829 DBG("offset %d, %d = %d\n",
830 var->xoffset, var->yoffset, offset);
831
832 DBG("paddr %x\n", data_start_p);
833
834 *paddr = data_start_p;
835}
836
837
838int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
839 u16 posx, u16 posy, u16 outw, u16 outh)
840{
841 int r = 0;
842 struct omapfb_info *ofbi = FB2OFB(fbi);
843 struct fb_var_screeninfo *var = &fbi->var;
844 struct fb_fix_screeninfo *fix = &fbi->fix;
845 enum omap_color_mode mode = 0;
846 u32 data_start_p = 0;
847 struct omap_overlay_info info;
848 int xres, yres;
849 int screen_width;
850 int mirror;
851 int rotation = var->rotate;
852 int i;
853
854 WARN_ON(!atomic_read(&ofbi->region->lock_count));
855
856 for (i = 0; i < ofbi->num_overlays; i++) {
857 if (ovl != ofbi->overlays[i])
858 continue;
859
860 rotation = (rotation + ofbi->rotation[i]) % 4;
861 break;
862 }
863
864 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
865 posx, posy, outw, outh);
866
867 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
868 xres = var->yres;
869 yres = var->xres;
870 } else {
871 xres = var->xres;
872 yres = var->yres;
873 }
874
875 if (ofbi->region->size)
876 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
877
878 r = fb_mode_to_dss_mode(var, &mode);
879 if (r) {
880 DBG("fb_mode_to_dss_mode failed");
881 goto err;
882 }
883
884 switch (var->nonstd) {
885 case OMAPFB_COLOR_YUV422:
886 case OMAPFB_COLOR_YUY422:
887 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
888 screen_width = fix->line_length
889 / (var->bits_per_pixel >> 2);
890 break;
891 }
892 default:
893 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
894 break;
895 }
896
897 ovl->get_overlay_info(ovl, &info);
898
899 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
900 mirror = 0;
901 else
902 mirror = ofbi->mirror;
903
904 info.paddr = data_start_p;
905 info.screen_width = screen_width;
906 info.width = xres;
907 info.height = yres;
908 info.color_mode = mode;
909 info.rotation_type = ofbi->rotation_type;
910 info.rotation = rotation;
911 info.mirror = mirror;
912
913 info.pos_x = posx;
914 info.pos_y = posy;
915 info.out_width = outw;
916 info.out_height = outh;
917
918 r = ovl->set_overlay_info(ovl, &info);
919 if (r) {
920 DBG("ovl->setup_overlay_info failed\n");
921 goto err;
922 }
923
924 return 0;
925
926err:
927 DBG("setup_overlay failed\n");
928 return r;
929}
930
931
932int omapfb_apply_changes(struct fb_info *fbi, int init)
933{
934 int r = 0;
935 struct omapfb_info *ofbi = FB2OFB(fbi);
936 struct fb_var_screeninfo *var = &fbi->var;
937 struct omap_overlay *ovl;
938 u16 posx, posy;
939 u16 outw, outh;
940 int i;
941
942#ifdef DEBUG
943 if (omapfb_test_pattern)
944 fill_fb(fbi);
945#endif
946
947 WARN_ON(!atomic_read(&ofbi->region->lock_count));
948
949 for (i = 0; i < ofbi->num_overlays; i++) {
950 ovl = ofbi->overlays[i];
951
952 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
953
954 if (ofbi->region->size == 0) {
955
956 omapfb_overlay_enable(ovl, 0);
957 if (!init && ovl->manager)
958 ovl->manager->apply(ovl->manager);
959 continue;
960 }
961
962 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
963 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
964 if (rotation == FB_ROTATE_CW ||
965 rotation == FB_ROTATE_CCW) {
966 outw = var->yres;
967 outh = var->xres;
968 } else {
969 outw = var->xres;
970 outh = var->yres;
971 }
972 } else {
973 struct omap_overlay_info info;
974 ovl->get_overlay_info(ovl, &info);
975 outw = info.out_width;
976 outh = info.out_height;
977 }
978
979 if (init) {
980 posx = 0;
981 posy = 0;
982 } else {
983 struct omap_overlay_info info;
984 ovl->get_overlay_info(ovl, &info);
985 posx = info.pos_x;
986 posy = info.pos_y;
987 }
988
989 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
990 if (r)
991 goto err;
992
993 if (!init && ovl->manager)
994 ovl->manager->apply(ovl->manager);
995 }
996 return 0;
997err:
998 DBG("apply_changes failed\n");
999 return r;
1000}
1001
1002
1003
1004static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1005{
1006 struct omapfb_info *ofbi = FB2OFB(fbi);
1007 int r;
1008
1009 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1010
1011 omapfb_get_mem_region(ofbi->region);
1012
1013 r = check_fb_var(fbi, var);
1014
1015 omapfb_put_mem_region(ofbi->region);
1016
1017 return r;
1018}
1019
1020
1021static int omapfb_set_par(struct fb_info *fbi)
1022{
1023 struct omapfb_info *ofbi = FB2OFB(fbi);
1024 int r;
1025
1026 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1027
1028 omapfb_get_mem_region(ofbi->region);
1029
1030 set_fb_fix(fbi);
1031
1032 r = setup_vrfb_rotation(fbi);
1033 if (r)
1034 goto out;
1035
1036 r = omapfb_apply_changes(fbi, 0);
1037
1038 out:
1039 omapfb_put_mem_region(ofbi->region);
1040
1041 return r;
1042}
1043
1044static int omapfb_pan_display(struct fb_var_screeninfo *var,
1045 struct fb_info *fbi)
1046{
1047 struct omapfb_info *ofbi = FB2OFB(fbi);
1048 struct fb_var_screeninfo new_var;
1049 int r;
1050
1051 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1052
1053 if (var->xoffset == fbi->var.xoffset &&
1054 var->yoffset == fbi->var.yoffset)
1055 return 0;
1056
1057 new_var = fbi->var;
1058 new_var.xoffset = var->xoffset;
1059 new_var.yoffset = var->yoffset;
1060
1061 fbi->var = new_var;
1062
1063 omapfb_get_mem_region(ofbi->region);
1064
1065 r = omapfb_apply_changes(fbi, 0);
1066
1067 omapfb_put_mem_region(ofbi->region);
1068
1069 return r;
1070}
1071
1072static void mmap_user_open(struct vm_area_struct *vma)
1073{
1074 struct omapfb2_mem_region *rg = vma->vm_private_data;
1075
1076 omapfb_get_mem_region(rg);
1077 atomic_inc(&rg->map_count);
1078 omapfb_put_mem_region(rg);
1079}
1080
1081static void mmap_user_close(struct vm_area_struct *vma)
1082{
1083 struct omapfb2_mem_region *rg = vma->vm_private_data;
1084
1085 omapfb_get_mem_region(rg);
1086 atomic_dec(&rg->map_count);
1087 omapfb_put_mem_region(rg);
1088}
1089
1090static struct vm_operations_struct mmap_user_ops = {
1091 .open = mmap_user_open,
1092 .close = mmap_user_close,
1093};
1094
1095static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1096{
1097 struct omapfb_info *ofbi = FB2OFB(fbi);
1098 struct fb_fix_screeninfo *fix = &fbi->fix;
1099 struct omapfb2_mem_region *rg;
1100 unsigned long off;
1101 unsigned long start;
1102 u32 len;
1103 int r = -EINVAL;
1104
1105 if (vma->vm_end - vma->vm_start == 0)
1106 return 0;
1107 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1108 return -EINVAL;
1109 off = vma->vm_pgoff << PAGE_SHIFT;
1110
1111 rg = omapfb_get_mem_region(ofbi->region);
1112
1113 start = omapfb_get_region_paddr(ofbi);
1114 len = fix->smem_len;
1115 if (off >= len)
1116 goto error;
1117 if ((vma->vm_end - vma->vm_start + off) > len)
1118 goto error;
1119
1120 off += start;
1121
1122 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1123
1124 vma->vm_pgoff = off >> PAGE_SHIFT;
1125 vma->vm_flags |= VM_IO | VM_RESERVED;
1126 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1127 vma->vm_ops = &mmap_user_ops;
1128 vma->vm_private_data = rg;
1129 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1130 vma->vm_end - vma->vm_start,
1131 vma->vm_page_prot)) {
1132 r = -EAGAIN;
1133 goto error;
1134 }
1135
1136
1137 atomic_inc(&rg->map_count);
1138
1139 omapfb_put_mem_region(rg);
1140
1141 return 0;
1142
1143 error:
1144 omapfb_put_mem_region(ofbi->region);
1145
1146 return r;
1147}
1148
1149
1150
1151
1152
1153static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1154 u_int blue, u_int transp, int update_hw_pal)
1155{
1156
1157
1158 struct fb_var_screeninfo *var = &fbi->var;
1159 int r = 0;
1160
1161 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U;
1162
1163
1164 switch (mode) {
1165 case OMAPFB_COLOR_YUV422:
1166 case OMAPFB_COLOR_YUV420:
1167 case OMAPFB_COLOR_YUY422:
1168 r = -EINVAL;
1169 break;
1170 case OMAPFB_COLOR_CLUT_8BPP:
1171 case OMAPFB_COLOR_CLUT_4BPP:
1172 case OMAPFB_COLOR_CLUT_2BPP:
1173 case OMAPFB_COLOR_CLUT_1BPP:
1174
1175
1176
1177
1178
1179
1180 r = -EINVAL;
1181 break;
1182 case OMAPFB_COLOR_RGB565:
1183 case OMAPFB_COLOR_RGB444:
1184 case OMAPFB_COLOR_RGB24P:
1185 case OMAPFB_COLOR_RGB24U:
1186 if (r != 0)
1187 break;
1188
1189 if (regno < 16) {
1190 u16 pal;
1191 pal = ((red >> (16 - var->red.length)) <<
1192 var->red.offset) |
1193 ((green >> (16 - var->green.length)) <<
1194 var->green.offset) |
1195 (blue >> (16 - var->blue.length));
1196 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1197 }
1198 break;
1199 default:
1200 BUG();
1201 }
1202 return r;
1203}
1204
1205static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1206 u_int transp, struct fb_info *info)
1207{
1208 DBG("setcolreg\n");
1209
1210 return _setcolreg(info, regno, red, green, blue, transp, 1);
1211}
1212
1213static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1214{
1215 int count, index, r;
1216 u16 *red, *green, *blue, *transp;
1217 u16 trans = 0xffff;
1218
1219 DBG("setcmap\n");
1220
1221 red = cmap->red;
1222 green = cmap->green;
1223 blue = cmap->blue;
1224 transp = cmap->transp;
1225 index = cmap->start;
1226
1227 for (count = 0; count < cmap->len; count++) {
1228 if (transp)
1229 trans = *transp++;
1230 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1231 count == cmap->len - 1);
1232 if (r != 0)
1233 return r;
1234 }
1235
1236 return 0;
1237}
1238
1239static int omapfb_blank(int blank, struct fb_info *fbi)
1240{
1241 struct omapfb_info *ofbi = FB2OFB(fbi);
1242 struct omapfb2_device *fbdev = ofbi->fbdev;
1243 struct omap_dss_device *display = fb2display(fbi);
1244 struct omapfb_display_data *d;
1245 int r = 0;
1246
1247 if (!display)
1248 return -EINVAL;
1249
1250 omapfb_lock(fbdev);
1251
1252 d = get_display_data(fbdev, display);
1253
1254 switch (blank) {
1255 case FB_BLANK_UNBLANK:
1256 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1257 goto exit;
1258
1259 if (display->driver->resume)
1260 r = display->driver->resume(display);
1261
1262 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1263 d->update_mode == OMAPFB_AUTO_UPDATE &&
1264 !d->auto_update_work_enabled)
1265 omapfb_start_auto_update(fbdev, display);
1266
1267 break;
1268
1269 case FB_BLANK_NORMAL:
1270
1271
1272 case FB_BLANK_VSYNC_SUSPEND:
1273 case FB_BLANK_HSYNC_SUSPEND:
1274 case FB_BLANK_POWERDOWN:
1275 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1276 goto exit;
1277
1278 if (d->auto_update_work_enabled)
1279 omapfb_stop_auto_update(fbdev, display);
1280
1281 if (display->driver->suspend)
1282 r = display->driver->suspend(display);
1283
1284 break;
1285
1286 default:
1287 r = -EINVAL;
1288 }
1289
1290exit:
1291 omapfb_unlock(fbdev);
1292
1293 return r;
1294}
1295
1296#if 0
1297
1298ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1299 size_t count, loff_t *ppos)
1300{
1301 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1302
1303 return count;
1304}
1305#endif
1306
1307static struct fb_ops omapfb_ops = {
1308 .owner = THIS_MODULE,
1309 .fb_open = omapfb_open,
1310 .fb_release = omapfb_release,
1311 .fb_fillrect = cfb_fillrect,
1312 .fb_copyarea = cfb_copyarea,
1313 .fb_imageblit = cfb_imageblit,
1314 .fb_blank = omapfb_blank,
1315 .fb_ioctl = omapfb_ioctl,
1316 .fb_check_var = omapfb_check_var,
1317 .fb_set_par = omapfb_set_par,
1318 .fb_pan_display = omapfb_pan_display,
1319 .fb_mmap = omapfb_mmap,
1320 .fb_setcolreg = omapfb_setcolreg,
1321 .fb_setcmap = omapfb_setcmap,
1322
1323};
1324
1325static void omapfb_free_fbmem(struct fb_info *fbi)
1326{
1327 struct omapfb_info *ofbi = FB2OFB(fbi);
1328 struct omapfb2_device *fbdev = ofbi->fbdev;
1329 struct omapfb2_mem_region *rg;
1330
1331 rg = ofbi->region;
1332
1333 WARN_ON(atomic_read(&rg->map_count));
1334
1335 if (rg->paddr)
1336 if (omap_vram_free(rg->paddr, rg->size))
1337 dev_err(fbdev->dev, "VRAM FREE failed\n");
1338
1339 if (rg->vaddr)
1340 iounmap(rg->vaddr);
1341
1342 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1343
1344 if (rg->vrfb.vaddr[0]) {
1345 iounmap(rg->vrfb.vaddr[0]);
1346 omap_vrfb_release_ctx(&rg->vrfb);
1347 rg->vrfb.vaddr[0] = NULL;
1348 }
1349 }
1350
1351 rg->vaddr = NULL;
1352 rg->paddr = 0;
1353 rg->alloc = 0;
1354 rg->size = 0;
1355}
1356
1357static void clear_fb_info(struct fb_info *fbi)
1358{
1359 memset(&fbi->var, 0, sizeof(fbi->var));
1360 memset(&fbi->fix, 0, sizeof(fbi->fix));
1361 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1362}
1363
1364static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1365{
1366 int i;
1367
1368 DBG("free all fbmem\n");
1369
1370 for (i = 0; i < fbdev->num_fbs; i++) {
1371 struct fb_info *fbi = fbdev->fbs[i];
1372 omapfb_free_fbmem(fbi);
1373 clear_fb_info(fbi);
1374 }
1375
1376 return 0;
1377}
1378
1379static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1380 unsigned long paddr)
1381{
1382 struct omapfb_info *ofbi = FB2OFB(fbi);
1383 struct omapfb2_device *fbdev = ofbi->fbdev;
1384 struct omapfb2_mem_region *rg;
1385 void __iomem *vaddr;
1386 int r;
1387
1388 rg = ofbi->region;
1389
1390 rg->paddr = 0;
1391 rg->vaddr = NULL;
1392 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1393 rg->size = 0;
1394 rg->type = 0;
1395 rg->alloc = false;
1396 rg->map = false;
1397
1398 size = PAGE_ALIGN(size);
1399
1400 if (!paddr) {
1401 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1402 r = omap_vram_alloc(size, &paddr);
1403 } else {
1404 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1405 ofbi->id);
1406 r = omap_vram_reserve(paddr, size);
1407 }
1408
1409 if (r) {
1410 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1411 return -ENOMEM;
1412 }
1413
1414 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1415 vaddr = ioremap_wc(paddr, size);
1416
1417 if (!vaddr) {
1418 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1419 omap_vram_free(paddr, size);
1420 return -ENOMEM;
1421 }
1422
1423 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1424 } else {
1425 r = omap_vrfb_request_ctx(&rg->vrfb);
1426 if (r) {
1427 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1428 return r;
1429 }
1430
1431 vaddr = NULL;
1432 }
1433
1434 rg->paddr = paddr;
1435 rg->vaddr = vaddr;
1436 rg->size = size;
1437 rg->alloc = 1;
1438
1439 return 0;
1440}
1441
1442
1443static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1444 unsigned long paddr)
1445{
1446 struct omapfb_info *ofbi = FB2OFB(fbi);
1447 struct omapfb2_device *fbdev = ofbi->fbdev;
1448 struct omap_dss_device *display;
1449 int bytespp;
1450
1451 display = fb2display(fbi);
1452
1453 if (!display)
1454 return 0;
1455
1456 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1457 case 16:
1458 bytespp = 2;
1459 break;
1460 case 24:
1461 bytespp = 4;
1462 break;
1463 default:
1464 bytespp = 4;
1465 break;
1466 }
1467
1468 if (!size) {
1469 u16 w, h;
1470
1471 display->driver->get_resolution(display, &w, &h);
1472
1473 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1474 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1475 omap_vrfb_min_phys_size(h, w, bytespp));
1476
1477 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1478 w * h * bytespp, size);
1479 } else {
1480 size = w * h * bytespp;
1481 }
1482 }
1483
1484 if (!size)
1485 return 0;
1486
1487 return omapfb_alloc_fbmem(fbi, size, paddr);
1488}
1489
1490static int omapfb_parse_vram_param(const char *param, int max_entries,
1491 unsigned long *sizes, unsigned long *paddrs)
1492{
1493 int fbnum;
1494 unsigned long size;
1495 unsigned long paddr = 0;
1496 char *p, *start;
1497
1498 start = (char *)param;
1499
1500 while (1) {
1501 p = start;
1502
1503 fbnum = simple_strtoul(p, &p, 10);
1504
1505 if (p == param)
1506 return -EINVAL;
1507
1508 if (*p != ':')
1509 return -EINVAL;
1510
1511 if (fbnum >= max_entries)
1512 return -EINVAL;
1513
1514 size = memparse(p + 1, &p);
1515
1516 if (!size)
1517 return -EINVAL;
1518
1519 paddr = 0;
1520
1521 if (*p == '@') {
1522 paddr = simple_strtoul(p + 1, &p, 16);
1523
1524 if (!paddr)
1525 return -EINVAL;
1526
1527 }
1528
1529 paddrs[fbnum] = paddr;
1530 sizes[fbnum] = size;
1531
1532 if (*p == 0)
1533 break;
1534
1535 if (*p != ',')
1536 return -EINVAL;
1537
1538 ++p;
1539
1540 start = p;
1541 }
1542
1543 return 0;
1544}
1545
1546static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1547{
1548 int i, r;
1549 unsigned long vram_sizes[10];
1550 unsigned long vram_paddrs[10];
1551
1552 memset(&vram_sizes, 0, sizeof(vram_sizes));
1553 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1554
1555 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1556 vram_sizes, vram_paddrs)) {
1557 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1558
1559 memset(&vram_sizes, 0, sizeof(vram_sizes));
1560 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1561 }
1562
1563 for (i = 0; i < fbdev->num_fbs; i++) {
1564
1565
1566 if (i == 0 || vram_sizes[i] != 0) {
1567 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1568 vram_sizes[i], vram_paddrs[i]);
1569
1570 if (r)
1571 return r;
1572 }
1573 }
1574
1575 for (i = 0; i < fbdev->num_fbs; i++) {
1576 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1577 struct omapfb2_mem_region *rg;
1578 rg = ofbi->region;
1579
1580 DBG("region%d phys %08x virt %p size=%lu\n",
1581 i,
1582 rg->paddr,
1583 rg->vaddr,
1584 rg->size);
1585 }
1586
1587 return 0;
1588}
1589
1590int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1591{
1592 struct omapfb_info *ofbi = FB2OFB(fbi);
1593 struct omapfb2_device *fbdev = ofbi->fbdev;
1594 struct omap_dss_device *display = fb2display(fbi);
1595 struct omapfb2_mem_region *rg = ofbi->region;
1596 unsigned long old_size = rg->size;
1597 unsigned long old_paddr = rg->paddr;
1598 int old_type = rg->type;
1599 int r;
1600
1601 if (type != OMAPFB_MEMTYPE_SDRAM)
1602 return -EINVAL;
1603
1604 size = PAGE_ALIGN(size);
1605
1606 if (old_size == size && old_type == type)
1607 return 0;
1608
1609 if (display && display->driver->sync)
1610 display->driver->sync(display);
1611
1612 omapfb_free_fbmem(fbi);
1613
1614 if (size == 0) {
1615 clear_fb_info(fbi);
1616 return 0;
1617 }
1618
1619 r = omapfb_alloc_fbmem(fbi, size, 0);
1620
1621 if (r) {
1622 if (old_size)
1623 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1624
1625 if (rg->size == 0)
1626 clear_fb_info(fbi);
1627
1628 return r;
1629 }
1630
1631 if (old_size == size)
1632 return 0;
1633
1634 if (old_size == 0) {
1635 DBG("initializing fb %d\n", ofbi->id);
1636 r = omapfb_fb_init(fbdev, fbi);
1637 if (r) {
1638 DBG("omapfb_fb_init failed\n");
1639 goto err;
1640 }
1641 r = omapfb_apply_changes(fbi, 1);
1642 if (r) {
1643 DBG("omapfb_apply_changes failed\n");
1644 goto err;
1645 }
1646 } else {
1647 struct fb_var_screeninfo new_var;
1648 memcpy(&new_var, &fbi->var, sizeof(new_var));
1649 r = check_fb_var(fbi, &new_var);
1650 if (r)
1651 goto err;
1652 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1653 set_fb_fix(fbi);
1654 r = setup_vrfb_rotation(fbi);
1655 if (r)
1656 goto err;
1657 }
1658
1659 return 0;
1660err:
1661 omapfb_free_fbmem(fbi);
1662 clear_fb_info(fbi);
1663 return r;
1664}
1665
1666static void omapfb_auto_update_work(struct work_struct *work)
1667{
1668 struct omap_dss_device *dssdev;
1669 struct omap_dss_driver *dssdrv;
1670 struct omapfb_display_data *d;
1671 u16 w, h;
1672 unsigned int freq;
1673 struct omapfb2_device *fbdev;
1674
1675 d = container_of(work, struct omapfb_display_data,
1676 auto_update_work.work);
1677
1678 dssdev = d->dssdev;
1679 dssdrv = dssdev->driver;
1680 fbdev = d->fbdev;
1681
1682 if (!dssdrv || !dssdrv->update)
1683 return;
1684
1685 if (dssdrv->sync)
1686 dssdrv->sync(dssdev);
1687
1688 dssdrv->get_resolution(dssdev, &w, &h);
1689 dssdrv->update(dssdev, 0, 0, w, h);
1690
1691 freq = auto_update_freq;
1692 if (freq == 0)
1693 freq = 20;
1694 queue_delayed_work(fbdev->auto_update_wq,
1695 &d->auto_update_work, HZ / freq);
1696}
1697
1698void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1699 struct omap_dss_device *display)
1700{
1701 struct omapfb_display_data *d;
1702
1703 if (fbdev->auto_update_wq == NULL) {
1704 struct workqueue_struct *wq;
1705
1706 wq = create_singlethread_workqueue("omapfb_auto_update");
1707
1708 if (wq == NULL) {
1709 dev_err(fbdev->dev, "Failed to create workqueue for "
1710 "auto-update\n");
1711 return;
1712 }
1713
1714 fbdev->auto_update_wq = wq;
1715 }
1716
1717 d = get_display_data(fbdev, display);
1718
1719 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1720
1721 d->auto_update_work_enabled = true;
1722
1723 omapfb_auto_update_work(&d->auto_update_work.work);
1724}
1725
1726void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1727 struct omap_dss_device *display)
1728{
1729 struct omapfb_display_data *d;
1730
1731 d = get_display_data(fbdev, display);
1732
1733 cancel_delayed_work_sync(&d->auto_update_work);
1734
1735 d->auto_update_work_enabled = false;
1736}
1737
1738
1739static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1740{
1741 struct fb_var_screeninfo *var = &fbi->var;
1742 struct omap_dss_device *display = fb2display(fbi);
1743 struct omapfb_info *ofbi = FB2OFB(fbi);
1744 int r = 0;
1745
1746 fbi->fbops = &omapfb_ops;
1747 fbi->flags = FBINFO_FLAG_DEFAULT;
1748 fbi->pseudo_palette = fbdev->pseudo_palette;
1749
1750 if (ofbi->region->size == 0) {
1751 clear_fb_info(fbi);
1752 return 0;
1753 }
1754
1755 var->nonstd = 0;
1756 var->bits_per_pixel = 0;
1757
1758 var->rotate = def_rotate;
1759
1760 if (display) {
1761 u16 w, h;
1762 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1763
1764 display->driver->get_resolution(display, &w, &h);
1765
1766 if (rotation == FB_ROTATE_CW ||
1767 rotation == FB_ROTATE_CCW) {
1768 var->xres = h;
1769 var->yres = w;
1770 } else {
1771 var->xres = w;
1772 var->yres = h;
1773 }
1774
1775 var->xres_virtual = var->xres;
1776 var->yres_virtual = var->yres;
1777
1778 if (!var->bits_per_pixel) {
1779 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1780 case 16:
1781 var->bits_per_pixel = 16;
1782 break;
1783 case 24:
1784 var->bits_per_pixel = 32;
1785 break;
1786 default:
1787 dev_err(fbdev->dev, "illegal display "
1788 "bpp\n");
1789 return -EINVAL;
1790 }
1791 }
1792 } else {
1793
1794 var->xres = 320;
1795 var->yres = 240;
1796 var->xres_virtual = var->xres;
1797 var->yres_virtual = var->yres;
1798 if (!var->bits_per_pixel)
1799 var->bits_per_pixel = 16;
1800 }
1801
1802 r = check_fb_var(fbi, var);
1803 if (r)
1804 goto err;
1805
1806 set_fb_fix(fbi);
1807 r = setup_vrfb_rotation(fbi);
1808 if (r)
1809 goto err;
1810
1811 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1812 if (r)
1813 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1814
1815err:
1816 return r;
1817}
1818
1819static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1820{
1821 fb_dealloc_cmap(&fbi->cmap);
1822}
1823
1824
1825static void omapfb_free_resources(struct omapfb2_device *fbdev)
1826{
1827 int i;
1828
1829 DBG("free_resources\n");
1830
1831 if (fbdev == NULL)
1832 return;
1833
1834 for (i = 0; i < fbdev->num_fbs; i++)
1835 unregister_framebuffer(fbdev->fbs[i]);
1836
1837
1838 omapfb_free_all_fbmem(fbdev);
1839
1840 for (i = 0; i < fbdev->num_fbs; i++) {
1841 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1842 framebuffer_release(fbdev->fbs[i]);
1843 }
1844
1845 for (i = 0; i < fbdev->num_displays; i++) {
1846 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1847
1848 if (fbdev->displays[i].auto_update_work_enabled)
1849 omapfb_stop_auto_update(fbdev, dssdev);
1850
1851 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1852 dssdev->driver->disable(dssdev);
1853
1854 omap_dss_put_device(dssdev);
1855 }
1856
1857 if (fbdev->auto_update_wq != NULL) {
1858 flush_workqueue(fbdev->auto_update_wq);
1859 destroy_workqueue(fbdev->auto_update_wq);
1860 fbdev->auto_update_wq = NULL;
1861 }
1862
1863 dev_set_drvdata(fbdev->dev, NULL);
1864 kfree(fbdev);
1865}
1866
1867static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1868{
1869 int r, i;
1870
1871 fbdev->num_fbs = 0;
1872
1873 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1874
1875
1876 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1877 struct fb_info *fbi;
1878 struct omapfb_info *ofbi;
1879
1880 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1881 fbdev->dev);
1882
1883 if (fbi == NULL) {
1884 dev_err(fbdev->dev,
1885 "unable to allocate memory for plane info\n");
1886 return -ENOMEM;
1887 }
1888
1889 clear_fb_info(fbi);
1890
1891 fbdev->fbs[i] = fbi;
1892
1893 ofbi = FB2OFB(fbi);
1894 ofbi->fbdev = fbdev;
1895 ofbi->id = i;
1896
1897 ofbi->region = &fbdev->regions[i];
1898 ofbi->region->id = i;
1899 init_rwsem(&ofbi->region->lock);
1900
1901
1902 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1903 OMAP_DSS_ROT_DMA;
1904 ofbi->mirror = def_mirror;
1905
1906 fbdev->num_fbs++;
1907 }
1908
1909 DBG("fb_infos allocated\n");
1910
1911
1912 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1913 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1914
1915 ofbi->overlays[0] = fbdev->overlays[i];
1916 ofbi->num_overlays = 1;
1917 }
1918
1919
1920 r = omapfb_allocate_all_fbs(fbdev);
1921 if (r) {
1922 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1923 return r;
1924 }
1925
1926 DBG("fbmems allocated\n");
1927
1928
1929 for (i = 0; i < fbdev->num_fbs; i++) {
1930 struct fb_info *fbi = fbdev->fbs[i];
1931 struct omapfb_info *ofbi = FB2OFB(fbi);
1932
1933 omapfb_get_mem_region(ofbi->region);
1934 r = omapfb_fb_init(fbdev, fbi);
1935 omapfb_put_mem_region(ofbi->region);
1936
1937 if (r) {
1938 dev_err(fbdev->dev, "failed to setup fb_info\n");
1939 return r;
1940 }
1941 }
1942
1943 DBG("fb_infos initialized\n");
1944
1945 for (i = 0; i < fbdev->num_fbs; i++) {
1946 r = register_framebuffer(fbdev->fbs[i]);
1947 if (r != 0) {
1948 dev_err(fbdev->dev,
1949 "registering framebuffer %d failed\n", i);
1950 return r;
1951 }
1952 }
1953
1954 DBG("framebuffers registered\n");
1955
1956 for (i = 0; i < fbdev->num_fbs; i++) {
1957 struct fb_info *fbi = fbdev->fbs[i];
1958 struct omapfb_info *ofbi = FB2OFB(fbi);
1959
1960 omapfb_get_mem_region(ofbi->region);
1961 r = omapfb_apply_changes(fbi, 1);
1962 omapfb_put_mem_region(ofbi->region);
1963
1964 if (r) {
1965 dev_err(fbdev->dev, "failed to change mode\n");
1966 return r;
1967 }
1968 }
1969
1970
1971 if (fbdev->num_fbs > 0) {
1972 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1973
1974 if (ofbi->num_overlays > 0) {
1975 struct omap_overlay *ovl = ofbi->overlays[0];
1976
1977 ovl->manager->apply(ovl->manager);
1978
1979 r = omapfb_overlay_enable(ovl, 1);
1980
1981 if (r) {
1982 dev_err(fbdev->dev,
1983 "failed to enable overlay\n");
1984 return r;
1985 }
1986 }
1987 }
1988
1989 DBG("create_framebuffers done\n");
1990
1991 return 0;
1992}
1993
1994static int omapfb_mode_to_timings(const char *mode_str,
1995 struct omap_video_timings *timings, u8 *bpp)
1996{
1997 struct fb_info *fbi;
1998 struct fb_var_screeninfo *var;
1999 struct fb_ops *fbops;
2000 int r;
2001
2002#ifdef CONFIG_OMAP2_DSS_VENC
2003 if (strcmp(mode_str, "pal") == 0) {
2004 *timings = omap_dss_pal_timings;
2005 *bpp = 24;
2006 return 0;
2007 } else if (strcmp(mode_str, "ntsc") == 0) {
2008 *timings = omap_dss_ntsc_timings;
2009 *bpp = 24;
2010 return 0;
2011 }
2012#endif
2013
2014
2015
2016
2017 *bpp = 0;
2018 fbi = NULL;
2019 var = NULL;
2020 fbops = NULL;
2021
2022 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2023 if (fbi == NULL) {
2024 r = -ENOMEM;
2025 goto err;
2026 }
2027
2028 var = kzalloc(sizeof(*var), GFP_KERNEL);
2029 if (var == NULL) {
2030 r = -ENOMEM;
2031 goto err;
2032 }
2033
2034 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2035 if (fbops == NULL) {
2036 r = -ENOMEM;
2037 goto err;
2038 }
2039
2040 fbi->fbops = fbops;
2041
2042 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2043 if (r == 0) {
2044 r = -EINVAL;
2045 goto err;
2046 }
2047
2048 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2049 timings->hbp = var->left_margin;
2050 timings->hfp = var->right_margin;
2051 timings->vbp = var->upper_margin;
2052 timings->vfp = var->lower_margin;
2053 timings->hsw = var->hsync_len;
2054 timings->vsw = var->vsync_len;
2055 timings->x_res = var->xres;
2056 timings->y_res = var->yres;
2057
2058 switch (var->bits_per_pixel) {
2059 case 16:
2060 *bpp = 16;
2061 break;
2062 case 24:
2063 case 32:
2064 default:
2065 *bpp = 24;
2066 break;
2067 }
2068
2069 r = 0;
2070
2071err:
2072 kfree(fbi);
2073 kfree(var);
2074 kfree(fbops);
2075
2076 return r;
2077}
2078
2079static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2080 struct omap_dss_device *display, char *mode_str)
2081{
2082 int r;
2083 u8 bpp;
2084 struct omap_video_timings timings, temp_timings;
2085 struct omapfb_display_data *d;
2086
2087 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2088 if (r)
2089 return r;
2090
2091 d = get_display_data(fbdev, display);
2092 d->bpp_override = bpp;
2093
2094 if (display->driver->check_timings) {
2095 r = display->driver->check_timings(display, &timings);
2096 if (r)
2097 return r;
2098 } else {
2099
2100 if (display->driver->get_timings) {
2101 display->driver->get_timings(display, &temp_timings);
2102
2103 if (temp_timings.x_res != timings.x_res ||
2104 temp_timings.y_res != timings.y_res)
2105 return -EINVAL;
2106 }
2107 }
2108
2109 if (display->driver->set_timings)
2110 display->driver->set_timings(display, &timings);
2111
2112 return 0;
2113}
2114
2115static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2116 struct omap_dss_device *dssdev)
2117{
2118 struct omapfb_display_data *d;
2119
2120 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2121
2122 d = get_display_data(fbdev, dssdev);
2123
2124 if (d->bpp_override != 0)
2125 return d->bpp_override;
2126
2127 return dssdev->driver->get_recommended_bpp(dssdev);
2128}
2129
2130static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2131{
2132 char *str, *options, *this_opt;
2133 int r = 0;
2134
2135 str = kstrdup(def_mode, GFP_KERNEL);
2136 if (!str)
2137 return -ENOMEM;
2138 options = str;
2139
2140 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2141 char *p, *display_str, *mode_str;
2142 struct omap_dss_device *display;
2143 int i;
2144
2145 p = strchr(this_opt, ':');
2146 if (!p) {
2147 r = -EINVAL;
2148 break;
2149 }
2150
2151 *p = 0;
2152 display_str = this_opt;
2153 mode_str = p + 1;
2154
2155 display = NULL;
2156 for (i = 0; i < fbdev->num_displays; ++i) {
2157 if (strcmp(fbdev->displays[i].dssdev->name,
2158 display_str) == 0) {
2159 display = fbdev->displays[i].dssdev;
2160 break;
2161 }
2162 }
2163
2164 if (!display) {
2165 r = -EINVAL;
2166 break;
2167 }
2168
2169 r = omapfb_set_def_mode(fbdev, display, mode_str);
2170 if (r)
2171 break;
2172 }
2173
2174 kfree(str);
2175
2176 return r;
2177}
2178
2179static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2180 struct omap_video_timings *t)
2181{
2182 t->x_res = m->xres;
2183 t->y_res = m->yres;
2184 t->pixel_clock = PICOS2KHZ(m->pixclock);
2185 t->hsw = m->hsync_len;
2186 t->hfp = m->right_margin;
2187 t->hbp = m->left_margin;
2188 t->vsw = m->vsync_len;
2189 t->vfp = m->lower_margin;
2190 t->vbp = m->upper_margin;
2191}
2192
2193static int omapfb_find_best_mode(struct omap_dss_device *display,
2194 struct omap_video_timings *timings)
2195{
2196 struct fb_monspecs *specs;
2197 u8 *edid;
2198 int r, i, best_xres, best_idx, len;
2199
2200 if (!display->driver->read_edid)
2201 return -ENODEV;
2202
2203 len = 0x80 * 2;
2204 edid = kmalloc(len, GFP_KERNEL);
2205
2206 r = display->driver->read_edid(display, edid, len);
2207 if (r < 0)
2208 goto err1;
2209
2210 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2211
2212 fb_edid_to_monspecs(edid, specs);
2213
2214 if (edid[126] > 0)
2215 fb_edid_add_monspecs(edid + 0x80, specs);
2216
2217 best_xres = 0;
2218 best_idx = -1;
2219
2220 for (i = 0; i < specs->modedb_len; ++i) {
2221 struct fb_videomode *m;
2222 struct omap_video_timings t;
2223
2224 m = &specs->modedb[i];
2225
2226 if (m->pixclock == 0)
2227 continue;
2228
2229
2230 if (m->xres == 2880 || m->xres == 1440)
2231 continue;
2232
2233 fb_videomode_to_omap_timings(m, &t);
2234
2235 r = display->driver->check_timings(display, &t);
2236 if (r == 0 && best_xres < m->xres) {
2237 best_xres = m->xres;
2238 best_idx = i;
2239 }
2240 }
2241
2242 if (best_xres == 0) {
2243 r = -ENOENT;
2244 goto err2;
2245 }
2246
2247 fb_videomode_to_omap_timings(&specs->modedb[best_idx], timings);
2248
2249 r = 0;
2250
2251err2:
2252 fb_destroy_modedb(specs->modedb);
2253 kfree(specs);
2254err1:
2255 kfree(edid);
2256
2257 return r;
2258}
2259
2260static int omapfb_init_display(struct omapfb2_device *fbdev,
2261 struct omap_dss_device *dssdev)
2262{
2263 struct omap_dss_driver *dssdrv = dssdev->driver;
2264 struct omapfb_display_data *d;
2265 int r;
2266
2267 r = dssdrv->enable(dssdev);
2268 if (r) {
2269 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2270 dssdev->name);
2271 return r;
2272 }
2273
2274 d = get_display_data(fbdev, dssdev);
2275
2276 d->fbdev = fbdev;
2277
2278 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2279 u16 w, h;
2280
2281 if (auto_update) {
2282 omapfb_start_auto_update(fbdev, dssdev);
2283 d->update_mode = OMAPFB_AUTO_UPDATE;
2284 } else {
2285 d->update_mode = OMAPFB_MANUAL_UPDATE;
2286 }
2287
2288 if (dssdrv->enable_te) {
2289 r = dssdrv->enable_te(dssdev, 1);
2290 if (r) {
2291 dev_err(fbdev->dev, "Failed to set TE\n");
2292 return r;
2293 }
2294 }
2295
2296 dssdrv->get_resolution(dssdev, &w, &h);
2297 r = dssdrv->update(dssdev, 0, 0, w, h);
2298 if (r) {
2299 dev_err(fbdev->dev,
2300 "Failed to update display\n");
2301 return r;
2302 }
2303 } else {
2304 d->update_mode = OMAPFB_AUTO_UPDATE;
2305 }
2306
2307 return 0;
2308}
2309
2310static int omapfb_probe(struct platform_device *pdev)
2311{
2312 struct omapfb2_device *fbdev = NULL;
2313 int r = 0;
2314 int i;
2315 struct omap_overlay *ovl;
2316 struct omap_dss_device *def_display;
2317 struct omap_dss_device *dssdev;
2318
2319 DBG("omapfb_probe\n");
2320
2321 if (pdev->num_resources != 0) {
2322 dev_err(&pdev->dev, "probed for an unknown device\n");
2323 r = -ENODEV;
2324 goto err0;
2325 }
2326
2327 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2328 if (fbdev == NULL) {
2329 r = -ENOMEM;
2330 goto err0;
2331 }
2332
2333
2334
2335
2336 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2337 def_vrfb = 0;
2338 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2339 "ignoring the module parameter vrfb=y\n");
2340 }
2341
2342
2343 mutex_init(&fbdev->mtx);
2344
2345 fbdev->dev = &pdev->dev;
2346 platform_set_drvdata(pdev, fbdev);
2347
2348 r = 0;
2349 fbdev->num_displays = 0;
2350 dssdev = NULL;
2351 for_each_dss_dev(dssdev) {
2352 struct omapfb_display_data *d;
2353
2354 omap_dss_get_device(dssdev);
2355
2356 if (!dssdev->driver) {
2357 dev_warn(&pdev->dev, "no driver for display: %s\n",
2358 dssdev->name);
2359 omap_dss_put_device(dssdev);
2360 continue;
2361 }
2362
2363 d = &fbdev->displays[fbdev->num_displays++];
2364 d->dssdev = dssdev;
2365 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2366 d->update_mode = OMAPFB_MANUAL_UPDATE;
2367 else
2368 d->update_mode = OMAPFB_AUTO_UPDATE;
2369 }
2370
2371 if (r)
2372 goto cleanup;
2373
2374 if (fbdev->num_displays == 0) {
2375 dev_err(&pdev->dev, "no displays\n");
2376 r = -EINVAL;
2377 goto cleanup;
2378 }
2379
2380 fbdev->num_overlays = omap_dss_get_num_overlays();
2381 for (i = 0; i < fbdev->num_overlays; i++)
2382 fbdev->overlays[i] = omap_dss_get_overlay(i);
2383
2384 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2385 for (i = 0; i < fbdev->num_managers; i++)
2386 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2387
2388
2389
2390 ovl = omap_dss_get_overlay(0);
2391 if (ovl->manager && ovl->manager->device) {
2392 def_display = ovl->manager->device;
2393 } else {
2394 dev_warn(&pdev->dev, "cannot find default display\n");
2395 def_display = NULL;
2396 }
2397
2398 if (def_mode && strlen(def_mode) > 0) {
2399 if (omapfb_parse_def_modes(fbdev))
2400 dev_warn(&pdev->dev, "cannot parse default modes\n");
2401 } else if (def_display && def_display->driver->set_timings &&
2402 def_display->driver->check_timings) {
2403 struct omap_video_timings t;
2404
2405 r = omapfb_find_best_mode(def_display, &t);
2406
2407 if (r == 0)
2408 def_display->driver->set_timings(def_display, &t);
2409 }
2410
2411 r = omapfb_create_framebuffers(fbdev);
2412 if (r)
2413 goto cleanup;
2414
2415 for (i = 0; i < fbdev->num_managers; i++) {
2416 struct omap_overlay_manager *mgr;
2417 mgr = fbdev->managers[i];
2418 r = mgr->apply(mgr);
2419 if (r)
2420 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2421 }
2422
2423 DBG("mgr->apply'ed\n");
2424
2425 if (def_display) {
2426 r = omapfb_init_display(fbdev, def_display);
2427 if (r) {
2428 dev_err(fbdev->dev,
2429 "failed to initialize default "
2430 "display\n");
2431 goto cleanup;
2432 }
2433 }
2434
2435 DBG("create sysfs for fbs\n");
2436 r = omapfb_create_sysfs(fbdev);
2437 if (r) {
2438 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2439 goto cleanup;
2440 }
2441
2442 return 0;
2443
2444cleanup:
2445 omapfb_free_resources(fbdev);
2446err0:
2447 dev_err(&pdev->dev, "failed to setup omapfb\n");
2448 return r;
2449}
2450
2451static int omapfb_remove(struct platform_device *pdev)
2452{
2453 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2454
2455
2456
2457 omapfb_remove_sysfs(fbdev);
2458
2459 omapfb_free_resources(fbdev);
2460
2461 return 0;
2462}
2463
2464static struct platform_driver omapfb_driver = {
2465 .probe = omapfb_probe,
2466 .remove = omapfb_remove,
2467 .driver = {
2468 .name = "omapfb",
2469 .owner = THIS_MODULE,
2470 },
2471};
2472
2473static int __init omapfb_init(void)
2474{
2475 DBG("omapfb_init\n");
2476
2477 if (platform_driver_register(&omapfb_driver)) {
2478 printk(KERN_ERR "failed to register omapfb driver\n");
2479 return -ENODEV;
2480 }
2481
2482 return 0;
2483}
2484
2485static void __exit omapfb_exit(void)
2486{
2487 DBG("omapfb_exit\n");
2488 platform_driver_unregister(&omapfb_driver);
2489}
2490
2491module_param_named(mode, def_mode, charp, 0);
2492module_param_named(vram, def_vram, charp, 0);
2493module_param_named(rotate, def_rotate, int, 0);
2494module_param_named(vrfb, def_vrfb, bool, 0);
2495module_param_named(mirror, def_mirror, bool, 0);
2496
2497
2498
2499
2500late_initcall(omapfb_init);
2501
2502module_exit(omapfb_exit);
2503
2504MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2505MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2506MODULE_LICENSE("GPL v2");
2507
