| Linux kernel & device driver programming |
| [ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] |
1 /* 1
2 * Framebuffer driver for TI OMAP boards
3 *
4 * Copyright (C) 2004 Nokia Corporation
5 * Author: Imre Deak <imre.deak@nokia.com>
6 *
7 * Acknowledgements:
8 * Alex McMains <aam@ridgerun.com> - O
9 * Juha Yrjola <juha.yrjola@nokia.com> - O
10 * Dirk Behme <dirk.behme@de.bosch.com> - c
11 * Texas Instruments - H
12 *
13 * This program is free software; you can redi
14 * under the terms of the GNU General Public L
15 * Free Software Foundation; either version 2
16 * option) any later version.
17 *
18 * This program is distributed in the hope tha
19 * WITHOUT ANY WARRANTY; without even the impl
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR
21 * General Public License for more details.
22 *
23 * You should have received a copy of the GNU
24 * with this program; if not, write to the Fre
25 * 59 Temple Place - Suite 330, Boston, MA 02
26 */
27 #include <linux/platform_device.h>
28 #include <linux/mm.h>
29 #include <linux/uaccess.h>
30
31 #include <mach/dma.h>
32 #include <mach/omapfb.h>
33
34 #include "lcdc.h"
35 #include "dispc.h"
36
37 #define MODULE_NAME "omapfb"
38
39 static unsigned int def_accel;
40 static unsigned long def_vram[OMAPFB_PLANE_
41 static unsigned int def_vram_cnt;
42 static unsigned long def_vxres;
43 static unsigned long def_vyres;
44 static unsigned int def_rotate;
45 static unsigned int def_mirror;
46
47 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
48 static int manual_update = 1;
49 #else
50 static int manual_update;
51 #endif
52
53 static struct platform_device *fbdev_pdev;
54 static struct lcd_panel *fbdev_panel;
55 static struct omapfb_device *omapfb_dev;
56
57 struct caps_table_struct {
58 unsigned long flag;
59 const char *name;
60 };
61
62 static struct caps_table_struct ctrl_caps[] =
63 { OMAPFB_CAPS_MANUAL_UPDATE, "manual
64 { OMAPFB_CAPS_TEARSYNC, "tearing
65 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "rel
66 { OMAPFB_CAPS_PLANE_SCALE, "scale p
67 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pi
68 { OMAPFB_CAPS_WINDOW_SCALE, "scale w
69 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay
70 { OMAPFB_CAPS_SET_BACKLIGHT, "backlig
71 };
72
73 static struct caps_table_struct color_caps[] =
74 { 1 << OMAPFB_COLOR_RGB565, "RGB56
75 { 1 << OMAPFB_COLOR_YUV422, "YUV42
76 { 1 << OMAPFB_COLOR_YUV420, "YUV42
77 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8
78 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4
79 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2
80 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1
81 { 1 << OMAPFB_COLOR_RGB444, "RGB44
82 { 1 << OMAPFB_COLOR_YUY422, "YUY42
83 };
84
85 /*
86 * -------------------------------------------
87 * LCD panel
88 * -------------------------------------------
89 */
90 extern struct lcd_ctrl hwa742_ctrl;
91 extern struct lcd_ctrl blizzard_ctrl;
92
93 static const struct lcd_ctrl *ctrls[] = {
94 #ifdef CONFIG_ARCH_OMAP1
95 &omap1_int_ctrl,
96 #else
97 &omap2_int_ctrl,
98 #endif
99
100 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
101 &hwa742_ctrl,
102 #endif
103 #ifdef CONFIG_FB_OMAP_LCDC_BLIZZARD
104 &blizzard_ctrl,
105 #endif
106 };
107
108 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
109 #ifdef CONFIG_ARCH_OMAP1
110 extern struct lcd_ctrl_extif omap1_ext_if;
111 #else
112 extern struct lcd_ctrl_extif omap2_ext_if;
113 #endif
114 #endif
115
116 static void omapfb_rqueue_lock(struct omapfb_d
117 {
118 mutex_lock(&fbdev->rqueue_mutex);
119 }
120
121 static void omapfb_rqueue_unlock(struct omapfb
122 {
123 mutex_unlock(&fbdev->rqueue_mutex);
124 }
125
126 /*
127 * -------------------------------------------
128 * LCD controller and LCD DMA
129 * -------------------------------------------
130 */
131 /* Lookup table to map elem size to elem type.
132 static const int dma_elem_type[] = {
133 0,
134 OMAP_DMA_DATA_TYPE_S8,
135 OMAP_DMA_DATA_TYPE_S16,
136 0,
137 OMAP_DMA_DATA_TYPE_S32,
138 };
139
140 /*
141 * Allocate resources needed for LCD controlle
142 * memory is allocated from system memory acco
143 * size, except if a bigger memory size is spe
144 * parameter.
145 */
146 static int ctrl_init(struct omapfb_device *fbd
147 {
148 int r;
149 int i;
150
151 /* kernel/module vram parameters overr
152 if (def_vram_cnt) {
153 for (i = 0; i < def_vram_cnt;
154 fbdev->mem_desc.region
155 PAGE_ALIGN(def
156 fbdev->mem_desc.region_cnt = i
157 } else {
158 struct omapfb_platform_data *c
159
160 conf = fbdev->dev->platform_da
161 fbdev->mem_desc = conf->mem_de
162 }
163
164 if (!fbdev->mem_desc.region_cnt) {
165 struct lcd_panel *panel = fbde
166 int def_size;
167 int bpp = panel->bpp;
168
169 /* 12 bpp is packed in 16 bits
170 if (bpp == 12)
171 bpp = 16;
172 def_size = def_vxres * def_vyr
173 fbdev->mem_desc.region_cnt = 1
174 fbdev->mem_desc.region[0].size
175 }
176 r = fbdev->ctrl->init(fbdev, 0, &fbdev
177 if (r < 0) {
178 dev_err(fbdev->dev, "controlle
179 r);
180 return r;
181 }
182
183 #ifdef DEBUG
184 for (i = 0; i < fbdev->mem_desc.region
185 dev_dbg(fbdev->dev, "region%d
186 i,
187 fbdev->mem_desc.regio
188 fbdev->mem_desc.regio
189 fbdev->mem_desc.regio
190 }
191 #endif
192 return 0;
193 }
194
195 static void ctrl_cleanup(struct omapfb_device
196 {
197 fbdev->ctrl->cleanup();
198 }
199
200 /* Must be called with fbdev->rqueue_mutex hel
201 static int ctrl_change_mode(struct fb_info *fb
202 {
203 int r;
204 unsigned long offset;
205 struct omapfb_plane_struct *plane = fb
206 struct omapfb_device *fbdev = plane->f
207 struct fb_var_screeninfo *var = &fbi->
208
209 offset = var->yoffset * fbi->fix.line_
210 var->xoffset * var->bits_per_
211
212 if (fbdev->ctrl->sync)
213 fbdev->ctrl->sync();
214 r = fbdev->ctrl->setup_plane(plane->id
215 offset, var->
216 plane->info.p
217 var->xres, va
218 if (fbdev->ctrl->set_scale != NULL)
219 r = fbdev->ctrl->set_scale(pla
220 var->xres,
221 plane->info
222 plane->info
223
224 return r;
225 }
226
227 /*
228 * -------------------------------------------
229 * fbdev framework callbacks and the ioctl int
230 * -------------------------------------------
231 */
232 /* Called each time the omapfb device is opene
233 static int omapfb_open(struct fb_info *info, i
234 {
235 return 0;
236 }
237
238 static void omapfb_sync(struct fb_info *info);
239
240 /* Called when the omapfb device is closed. We
241 * gfx DMA operations are ended, before we ret
242 static int omapfb_release(struct fb_info *info
243 {
244 omapfb_sync(info);
245 return 0;
246 }
247
248 /* Store a single color palette entry into a p
249 * palette if one is available. For now we sup
250 * the entry only to the pseudo palette.
251 */
252 static int _setcolreg(struct fb_info *info, u_
253 u_int blue, u_int tran
254 {
255 struct omapfb_plane_struct *plane = in
256 struct omapfb_device *fbdev = plane->f
257 struct fb_var_screeninfo *var = &info-
258 int r = 0;
259
260 switch (plane->color_mode) {
261 case OMAPFB_COLOR_YUV422:
262 case OMAPFB_COLOR_YUV420:
263 case OMAPFB_COLOR_YUY422:
264 r = -EINVAL;
265 break;
266 case OMAPFB_COLOR_CLUT_8BPP:
267 case OMAPFB_COLOR_CLUT_4BPP:
268 case OMAPFB_COLOR_CLUT_2BPP:
269 case OMAPFB_COLOR_CLUT_1BPP:
270 if (fbdev->ctrl->setcolreg)
271 r = fbdev->ctrl->setco
272
273 /* Fallthrough */
274 case OMAPFB_COLOR_RGB565:
275 case OMAPFB_COLOR_RGB444:
276 if (r != 0)
277 break;
278
279 if (regno < 0) {
280 r = -EINVAL;
281 break;
282 }
283
284 if (regno < 16) {
285 u16 pal;
286 pal = ((red >> (16 - v
287 var->r
288 ((green >> (16 -
289 var->g
290 (blue >> (16 - v
291 ((u32 *)(info->pseudo_
292 }
293 break;
294 default:
295 BUG();
296 }
297 return r;
298 }
299
300 static int omapfb_setcolreg(u_int regno, u_int
301 u_int transp, stru
302 {
303 return _setcolreg(info, regno, red, gr
304 }
305
306 static int omapfb_setcmap(struct fb_cmap *cmap
307 {
308 int count, index, r;
309 u16 *red, *green, *blue, *transp;
310 u16 trans = 0xffff;
311
312 red = cmap->red;
313 green = cmap->green;
314 blue = cmap->blue;
315 transp = cmap->transp;
316 index = cmap->start;
317
318 for (count = 0; count < cmap->len; cou
319 if (transp)
320 trans = *transp++;
321 r = _setcolreg(info, index++,
322 count == cmap-
323 if (r != 0)
324 return r;
325 }
326
327 return 0;
328 }
329
330 static int omapfb_update_full_screen(struct fb
331
332 static int omapfb_blank(int blank, struct fb_i
333 {
334 struct omapfb_plane_struct *plane = fb
335 struct omapfb_device *fbdev = plane->f
336 int do_update = 0;
337 int r = 0;
338
339 omapfb_rqueue_lock(fbdev);
340 switch (blank) {
341 case FB_BLANK_UNBLANK:
342 if (fbdev->state == OMAPFB_SUS
343 if (fbdev->ctrl->resum
344 fbdev->ctrl->r
345 fbdev->panel->enable(f
346 fbdev->state = OMAPFB_
347 if (fbdev->ctrl->get_u
348 OMAPFB
349 do_update = 1;
350 }
351 break;
352 case FB_BLANK_POWERDOWN:
353 if (fbdev->state == OMAPFB_ACT
354 fbdev->panel->disable(
355 if (fbdev->ctrl->suspe
356 fbdev->ctrl->s
357 fbdev->state = OMAPFB_
358 }
359 break;
360 default:
361 r = -EINVAL;
362 }
363 omapfb_rqueue_unlock(fbdev);
364
365 if (r == 0 && do_update)
366 r = omapfb_update_full_screen(
367
368 return r;
369 }
370
371 static void omapfb_sync(struct fb_info *fbi)
372 {
373 struct omapfb_plane_struct *plane = fb
374 struct omapfb_device *fbdev = plane->f
375
376 omapfb_rqueue_lock(fbdev);
377 if (fbdev->ctrl->sync)
378 fbdev->ctrl->sync();
379 omapfb_rqueue_unlock(fbdev);
380 }
381
382 /*
383 * Set fb_info.fix fields and also updates fbd
384 * When calling this fb_info.var must be set u
385 */
386 static void set_fb_fix(struct fb_info *fbi)
387 {
388 struct fb_fix_screeninfo *fix = &fbi->
389 struct fb_var_screeninfo *var = &fbi->
390 struct omapfb_plane_struct *plane = fb
391 struct omapfb_mem_region *rg;
392 int bpp;
393
394 rg = &plane->fbdev->mem_desc.region[pl
395 fbi->screen_base = rg->vaddr;
396 mutex_lock(&fbi->mm_lock);
397 fix->smem_start = rg->paddr;
398 fix->smem_len = rg->size;
399 mutex_unlock(&fbi->mm_lock);
400
401 fix->type = FB_TYPE_PACKED_PIXELS;
402 bpp = var->bits_per_pixel;
403 if (var->nonstd)
404 fix->visual = FB_VISUAL_PSEUDO
405 else switch (var->bits_per_pixel) {
406 case 16:
407 case 12:
408 fix->visual = FB_VISUAL_TRUECO
409 /* 12bpp is stored in 16 bits
410 bpp = 16;
411 break;
412 case 1:
413 case 2:
414 case 4:
415 case 8:
416 fix->visual = FB_VISUAL_PSEUDO
417 break;
418 }
419 fix->accel = FB_ACCEL_OMA
420 fix->line_length = var->xres_vi
421 }
422
423 static int set_color_mode(struct omapfb_plane_
424 struct fb_var_screen
425 {
426 switch (var->nonstd) {
427 case 0:
428 break;
429 case OMAPFB_COLOR_YUV422:
430 var->bits_per_pixel = 16;
431 plane->color_mode = var->nonst
432 return 0;
433 case OMAPFB_COLOR_YUV420:
434 var->bits_per_pixel = 12;
435 plane->color_mode = var->nonst
436 return 0;
437 case OMAPFB_COLOR_YUY422:
438 var->bits_per_pixel = 16;
439 plane->color_mode = var->nonst
440 return 0;
441 default:
442 return -EINVAL;
443 }
444
445 switch (var->bits_per_pixel) {
446 case 1:
447 plane->color_mode = OMAPFB_COL
448 return 0;
449 case 2:
450 plane->color_mode = OMAPFB_COL
451 return 0;
452 case 4:
453 plane->color_mode = OMAPFB_COL
454 return 0;
455 case 8:
456 plane->color_mode = OMAPFB_COL
457 return 0;
458 case 12:
459 var->bits_per_pixel = 16;
460 plane->color_mode = OMAPFB_COL
461 return 0;
462 case 16:
463 plane->color_mode = OMAPFB_COL
464 return 0;
465 default:
466 return -EINVAL;
467 }
468 }
469
470 /*
471 * Check the values in var against our capabil
472 * bound values try to adjust them.
473 */
474 static int set_fb_var(struct fb_info *fbi,
475 struct fb_var_screeninfo
476 {
477 int bpp;
478 unsigned long max_frame_size;
479 unsigned long line_size;
480 int xres_min, xres_max;
481 int yres_min, yres_max;
482 struct omapfb_plane_struct *plane = fb
483 struct omapfb_device *fbdev = plane->f
484 struct lcd_panel *panel = fbdev->panel
485
486 if (set_color_mode(plane, var) < 0)
487 return -EINVAL;
488
489 bpp = var->bits_per_pixel;
490 if (plane->color_mode == OMAPFB_COLOR_
491 bpp = 16;
492
493 switch (var->rotate) {
494 case 0:
495 case 180:
496 xres_min = OMAPFB_PLANE_XRES_M
497 xres_max = panel->x_res;
498 yres_min = OMAPFB_PLANE_YRES_M
499 yres_max = panel->y_res;
500 if (cpu_is_omap15xx()) {
501 var->xres = panel->x_r
502 var->yres = panel->y_r
503 }
504 break;
505 case 90:
506 case 270:
507 xres_min = OMAPFB_PLANE_YRES_M
508 xres_max = panel->y_res;
509 yres_min = OMAPFB_PLANE_XRES_M
510 yres_max = panel->x_res;
511 if (cpu_is_omap15xx()) {
512 var->xres = panel->y_r
513 var->yres = panel->x_r
514 }
515 break;
516 default:
517 return -EINVAL;
518 }
519
520 if (var->xres < xres_min)
521 var->xres = xres_min;
522 if (var->yres < yres_min)
523 var->yres = yres_min;
524 if (var->xres > xres_max)
525 var->xres = xres_max;
526 if (var->yres > yres_max)
527 var->yres = yres_max;
528
529 if (var->xres_virtual < var->xres)
530 var->xres_virtual = var->xres;
531 if (var->yres_virtual < var->yres)
532 var->yres_virtual = var->yres;
533 max_frame_size = fbdev->mem_desc.regio
534 line_size = var->xres_virtual * bpp /
535 if (line_size * var->yres_virtual > ma
536 /* Try to keep yres_virtual fi
537 line_size = max_frame_size / v
538 var->xres_virtual = line_size
539 if (var->xres_virtual < var->x
540 /* Still doesn't fit.
541 var->xres_virtual = va
542 line_size = var->xres
543 var->yres_virtual = ma
544 }
545 /* Recheck this, as the virtua
546 if (var->xres_virtual < var->x
547 var->xres = var->xres_
548 if (var->yres_virtual < var->y
549 var->yres = var->yres_
550 if (var->xres < xres_min || va
551 return -EINVAL;
552 }
553 if (var->xres + var->xoffset > var->xr
554 var->xoffset = var->xres_virtu
555 if (var->yres + var->yoffset > var->yr
556 var->yoffset = var->yres_virtu
557 line_size = var->xres * bpp / 8;
558
559 if (plane->color_mode == OMAPFB_COLOR_
560 var->red.offset = 8; var->re
561
562 var->green.offset = 4; var->gr
563
564 var->blue.offset = 0; var->bl
565
566 } else {
567 var->red.offset = 11; var->re
568
569 var->green.offset = 5; var->g
570
571 var->blue.offset = 0; var->bl
572
573 }
574
575 var->height = -1;
576 var->width = -1;
577 var->grayscale = 0;
578
579 /* pixclock in ps, the rest in pixcloc
580 var->pixclock = 10000000 / (
581 var->left_margin = panel->hfp;
582 var->right_margin = panel->hbp;
583 var->upper_margin = panel->vfp;
584 var->lower_margin = panel->vbp;
585 var->hsync_len = panel->hsw;
586 var->vsync_len = panel->vsw;
587
588 /* TODO: get these from panel->config
589 var->vmode = FB_VMODE_NON
590 var->sync = 0;
591
592 return 0;
593 }
594
595
596 /* Set rotation (0, 90, 180, 270 degree), and
597 static void omapfb_rotate(struct fb_info *fbi,
598 {
599 struct omapfb_plane_struct *plane = fb
600 struct omapfb_device *fbdev = plane->f
601
602 omapfb_rqueue_lock(fbdev);
603 if (cpu_is_omap15xx() && rotate != fbi
604 struct fb_var_screeninfo *new_
605
606 memcpy(new_var, &fbi->var, siz
607 new_var->rotate = rotate;
608 if (set_fb_var(fbi, new_var) =
609 memcmp(new_var, &fbi->var,
610 memcpy(&fbi->var, new_
611 ctrl_change_mode(fbi);
612 }
613 }
614 omapfb_rqueue_unlock(fbdev);
615 }
616
617 /*
618 * Set new x,y offsets in the virtual display
619 * to the new mode.
620 */
621 static int omapfb_pan_display(struct fb_var_sc
622 struct fb_info
623 {
624 struct omapfb_plane_struct *plane = fb
625 struct omapfb_device *fbdev = plane->f
626 int r = 0;
627
628 omapfb_rqueue_lock(fbdev);
629 if (var->xoffset != fbi->var.xoffset |
630 var->yoffset != fbi->var.yoffset)
631 struct fb_var_screeninfo *new_
632
633 memcpy(new_var, &fbi->var, siz
634 new_var->xoffset = var->xoffse
635 new_var->yoffset = var->yoffse
636 if (set_fb_var(fbi, new_var))
637 r = -EINVAL;
638 else {
639 memcpy(&fbi->var, new_
640 ctrl_change_mode(fbi);
641 }
642 }
643 omapfb_rqueue_unlock(fbdev);
644
645 return r;
646 }
647
648 /* Set mirror to vertical axis and switch to t
649 static int omapfb_mirror(struct fb_info *fbi,
650 {
651 struct omapfb_plane_struct *plane = fb
652 struct omapfb_device *fbdev = plane->f
653 int r = 0;
654
655 omapfb_rqueue_lock(fbdev);
656 mirror = mirror ? 1 : 0;
657 if (cpu_is_omap15xx())
658 r = -EINVAL;
659 else if (mirror != plane->info.mirror)
660 plane->info.mirror = mirror;
661 r = ctrl_change_mode(fbi);
662 }
663 omapfb_rqueue_unlock(fbdev);
664
665 return r;
666 }
667
668 /*
669 * Check values in var, try to adjust them in
670 * possible, or return error.
671 */
672 static int omapfb_check_var(struct fb_var_scre
673 {
674 struct omapfb_plane_struct *plane = fb
675 struct omapfb_device *fbdev = plane->f
676 int r;
677
678 omapfb_rqueue_lock(fbdev);
679 if (fbdev->ctrl->sync != NULL)
680 fbdev->ctrl->sync();
681 r = set_fb_var(fbi, var);
682 omapfb_rqueue_unlock(fbdev);
683
684 return r;
685 }
686
687 /*
688 * Switch to a new mode. The parameters for it
689 * omapfb_check_var.
690 */
691 static int omapfb_set_par(struct fb_info *fbi)
692 {
693 struct omapfb_plane_struct *plane = fb
694 struct omapfb_device *fbdev = plane->f
695 int r = 0;
696
697 omapfb_rqueue_lock(fbdev);
698 set_fb_fix(fbi);
699 r = ctrl_change_mode(fbi);
700 omapfb_rqueue_unlock(fbdev);
701
702 return r;
703 }
704
705 int omapfb_update_window_async(struct fb_info
706 struct omapfb_
707 void (*callbac
708 void *callback
709 {
710 struct omapfb_plane_struct *plane = fb
711 struct omapfb_device *fbdev = plane->f
712 struct fb_var_screeninfo *var;
713
714 var = &fbi->var;
715 if (win->x >= var->xres || win->y >= v
716 win->out_x > var->xres || win->out
717 return -EINVAL;
718
719 if (!fbdev->ctrl->update_window ||
720 fbdev->ctrl->get_update_mode() !=
721 return -ENODEV;
722
723 if (win->x + win->width >= var->xres)
724 win->width = var->xres - win->
725 if (win->y + win->height >= var->yres)
726 win->height = var->yres - win-
727 /* The out sizes should be cropped to
728 if (win->out_x + win->out_width > fbde
729 win->out_width = fbdev->panel-
730 if (win->out_y + win->out_height > fbd
731 win->out_height = fbdev->panel
732 if (!win->width || !win->height || !wi
733 return 0;
734
735 return fbdev->ctrl->update_window(fbi,
736 }
737 EXPORT_SYMBOL(omapfb_update_window_async);
738
739 static int omapfb_update_win(struct fb_info *f
740 struct omapfb_
741 {
742 struct omapfb_plane_struct *plane = fb
743 int ret;
744
745 omapfb_rqueue_lock(plane->fbdev);
746 ret = omapfb_update_window_async(fbi,
747 omapfb_rqueue_unlock(plane->fbdev);
748
749 return ret;
750 }
751
752 static int omapfb_update_full_screen(struct fb
753 {
754 struct omapfb_plane_struct *plane = fb
755 struct omapfb_device *fbdev = plane->f
756 struct omapfb_update_window win;
757 int r;
758
759 if (!fbdev->ctrl->update_window ||
760 fbdev->ctrl->get_update_mode() !=
761 return -ENODEV;
762
763 win.x = 0;
764 win.y = 0;
765 win.width = fbi->var.xres;
766 win.height = fbi->var.yres;
767 win.out_x = 0;
768 win.out_y = 0;
769 win.out_width = fbi->var.xres;
770 win.out_height = fbi->var.yres;
771 win.format = 0;
772
773 omapfb_rqueue_lock(fbdev);
774 r = fbdev->ctrl->update_window(fbi, &w
775 omapfb_rqueue_unlock(fbdev);
776
777 return r;
778 }
779
780 static int omapfb_setup_plane(struct fb_info *
781 {
782 struct omapfb_plane_struct *plane = fb
783 struct omapfb_device *fbdev = plane->f
784 struct lcd_panel *panel = fbdev->panel
785 struct omapfb_plane_info old_info;
786 int r = 0;
787
788 if (pi->pos_x + pi->out_width > panel-
789 pi->pos_y + pi->out_height > panel
790 return -EINVAL;
791
792 omapfb_rqueue_lock(fbdev);
793 if (pi->enabled && !fbdev->mem_desc.re
794 /*
795 * This plane's memory was fre
796 * until it's reallocated.
797 */
798 r = -EINVAL;
799 goto out;
800 }
801 old_info = plane->info;
802 plane->info = *pi;
803 if (pi->enabled) {
804 r = ctrl_change_mode(fbi);
805 if (r < 0) {
806 plane->info = old_info
807 goto out;
808 }
809 }
810 r = fbdev->ctrl->enable_plane(plane->i
811 if (r < 0) {
812 plane->info = old_info;
813 goto out;
814 }
815 out:
816 omapfb_rqueue_unlock(fbdev);
817 return r;
818 }
819
820 static int omapfb_query_plane(struct fb_info *
821 {
822 struct omapfb_plane_struct *plane = fb
823
824 *pi = plane->info;
825 return 0;
826 }
827
828 static int omapfb_setup_mem(struct fb_info *fb
829 {
830 struct omapfb_plane_struct *plane = fb
831 struct omapfb_device *fbdev = plane->f
832 struct omapfb_mem_region *rg = &fbdev-
833 size_t size;
834 int r = 0;
835
836 if (fbdev->ctrl->setup_mem == NULL)
837 return -ENODEV;
838 if (mi->type > OMAPFB_MEMTYPE_MAX)
839 return -EINVAL;
840
841 size = PAGE_ALIGN(mi->size);
842 omapfb_rqueue_lock(fbdev);
843 if (plane->info.enabled) {
844 r = -EBUSY;
845 goto out;
846 }
847 if (rg->size != size || rg->type != mi
848 struct fb_var_screeninfo *new_
849 unsigned long old_size = rg->s
850 u8 old_type = rg->t
851 unsigned long paddr;
852
853 rg->size = size;
854 rg->type = mi->type;
855 /*
856 * size == 0 is a special case
857 * don't check / adjust the sc
858 * This isn't a problem since
859 * be reenabled unless its siz
860 */
861 if (old_size != size && size)
862 if (size) {
863 memcpy(new_var
864 r = set_fb_var
865 if (r < 0)
866 goto o
867 }
868 }
869
870 if (fbdev->ctrl->sync)
871 fbdev->ctrl->sync();
872 r = fbdev->ctrl->setup_mem(pla
873 if (r < 0) {
874 /* Revert changes. */
875 rg->size = old_size;
876 rg->type = old_type;
877 goto out;
878 }
879 rg->paddr = paddr;
880
881 if (old_size != size) {
882 if (size) {
883 memcpy(&fbi->v
884 set_fb_fix(fbi
885 } else {
886 /*
887 * Set these e
888 * plane memor
889 * screen para
890 */
891 mutex_lock(&fb
892 fbi->fix.smem_
893 fbi->fix.smem_
894 mutex_unlock(&
895 }
896 }
897 }
898 out:
899 omapfb_rqueue_unlock(fbdev);
900
901 return r;
902 }
903
904 static int omapfb_query_mem(struct fb_info *fb
905 {
906 struct omapfb_plane_struct *plane = fb
907 struct omapfb_device *fbdev = plane->f
908 struct omapfb_mem_region *rg;
909
910 rg = &fbdev->mem_desc.region[plane->id
911 memset(mi, 0, sizeof(*mi));
912 mi->size = rg->size;
913 mi->type = rg->type;
914
915 return 0;
916 }
917
918 static int omapfb_set_color_key(struct omapfb_
919 struct omapfb_
920 {
921 int r;
922
923 if (!fbdev->ctrl->set_color_key)
924 return -ENODEV;
925
926 omapfb_rqueue_lock(fbdev);
927 r = fbdev->ctrl->set_color_key(ck);
928 omapfb_rqueue_unlock(fbdev);
929
930 return r;
931 }
932
933 static int omapfb_get_color_key(struct omapfb_
934 struct omapfb_
935 {
936 int r;
937
938 if (!fbdev->ctrl->get_color_key)
939 return -ENODEV;
940
941 omapfb_rqueue_lock(fbdev);
942 r = fbdev->ctrl->get_color_key(ck);
943 omapfb_rqueue_unlock(fbdev);
944
945 return r;
946 }
947
948 static struct blocking_notifier_head omapfb_cl
949 static int notifier_inited;
950
951 static void omapfb_init_notifier(void)
952 {
953 int i;
954
955 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
956 BLOCKING_INIT_NOTIFIER_HEAD(&o
957 }
958
959 int omapfb_register_client(struct omapfb_notif
960 omapfb_notifie
961 void *callback
962 {
963 int r;
964
965 if ((unsigned)omapfb_nb->plane_idx > O
966 return -EINVAL;
967
968 if (!notifier_inited) {
969 omapfb_init_notifier();
970 notifier_inited = 1;
971 }
972
973 omapfb_nb->nb.notifier_call = (int (*)
974 unsign
975 omapfb_nb->data = callback_data;
976 r = blocking_notifier_chain_register(
977 &omapfb_client
978 &omapfb_nb->nb
979 if (r)
980 return r;
981 if (omapfb_dev != NULL &&
982 omapfb_dev->ctrl && omapfb_dev->ct
983 omapfb_dev->ctrl->bind_client(
984 }
985
986 return 0;
987 }
988 EXPORT_SYMBOL(omapfb_register_client);
989
990 int omapfb_unregister_client(struct omapfb_not
991 {
992 return blocking_notifier_chain_unregis
993 &omapfb_client_list[omapfb_nb-
994 }
995 EXPORT_SYMBOL(omapfb_unregister_client);
996
997 void omapfb_notify_clients(struct omapfb_devic
998 {
999 int i;
1000
1001 if (!notifier_inited)
1002 /* no client registered yet *
1003 return;
1004
1005 for (i = 0; i < OMAPFB_PLANE_NUM; i++
1006 blocking_notifier_call_chain(
1007 fbdev->fb
1008 }
1009 EXPORT_SYMBOL(omapfb_notify_clients);
1010
1011 static int omapfb_set_update_mode(struct omap
1012 enum omapf
1013 {
1014 int r;
1015
1016 omapfb_rqueue_lock(fbdev);
1017 r = fbdev->ctrl->set_update_mode(mode
1018 omapfb_rqueue_unlock(fbdev);
1019
1020 return r;
1021 }
1022
1023 static enum omapfb_update_mode omapfb_get_upd
1024 {
1025 int r;
1026
1027 omapfb_rqueue_lock(fbdev);
1028 r = fbdev->ctrl->get_update_mode();
1029 omapfb_rqueue_unlock(fbdev);
1030
1031 return r;
1032 }
1033
1034 static void omapfb_get_caps(struct omapfb_dev
1035 struct o
1036 {
1037 memset(caps, 0, sizeof(*caps));
1038 fbdev->ctrl->get_caps(plane, caps);
1039 caps->ctrl |= fbdev->panel->get_caps(
1040 }
1041
1042 /* For lcd testing */
1043 void omapfb_write_first_pixel(struct omapfb_d
1044 {
1045 omapfb_rqueue_lock(fbdev);
1046 *(u16 *)fbdev->mem_desc.region[0].vad
1047 if (fbdev->ctrl->get_update_mode() ==
1048 struct omapfb_update_window w
1049
1050 memset(&win, 0, sizeof(win));
1051 win.width = 2;
1052 win.height = 2;
1053 win.out_width = 2;
1054 win.out_height = 2;
1055 fbdev->ctrl->update_window(fb
1056 }
1057 omapfb_rqueue_unlock(fbdev);
1058 }
1059 EXPORT_SYMBOL(omapfb_write_first_pixel);
1060
1061 /*
1062 * Ioctl interface. Part of the kernel mode f
1063 * here to be accessible by user mode code.
1064 */
1065 static int omapfb_ioctl(struct fb_info *fbi,
1066 unsigned long arg)
1067 {
1068 struct omapfb_plane_struct *plane = f
1069 struct omapfb_device *fbdev = plan
1070 struct fb_ops *ops = fbi->f
1071 union {
1072 struct omapfb_update_window
1073 struct omapfb_plane_info
1074 struct omapfb_mem_info
1075 struct omapfb_color_key
1076 enum omapfb_update_mode
1077 struct omapfb_caps
1078 unsigned int mirro
1079 int plane
1080 int enabl
1081 } p;
1082 int r = 0;
1083
1084 BUG_ON(!ops);
1085 switch (cmd) {
1086 case OMAPFB_MIRROR:
1087 if (get_user(p.mirror, (int _
1088 r = -EFAULT;
1089 else
1090 omapfb_mirror(fbi, p.
1091 break;
1092 case OMAPFB_SYNC_GFX:
1093 omapfb_sync(fbi);
1094 break;
1095 case OMAPFB_VSYNC:
1096 break;
1097 case OMAPFB_SET_UPDATE_MODE:
1098 if (get_user(p.update_mode, (
1099 r = -EFAULT;
1100 else
1101 r = omapfb_set_update
1102 break;
1103 case OMAPFB_GET_UPDATE_MODE:
1104 p.update_mode = omapfb_get_up
1105 if (put_user(p.update_mode,
1106 (enum
1107 r = -EFAULT;
1108 break;
1109 case OMAPFB_UPDATE_WINDOW_OLD:
1110 if (copy_from_user(&p.update_
1111 sizeof(str
1112 r = -EFAULT;
1113 else {
1114 struct omapfb_update_
1115 u->out_x = u->x;
1116 u->out_y = u->y;
1117 u->out_width = u->wid
1118 u->out_height = u->he
1119 memset(u->reserved, 0
1120 r = omapfb_update_win
1121 }
1122 break;
1123 case OMAPFB_UPDATE_WINDOW:
1124 if (copy_from_user(&p.update_
1125 sizeof(p.u
1126 r = -EFAULT;
1127 else
1128 r = omapfb_update_win
1129 break;
1130 case OMAPFB_SETUP_PLANE:
1131 if (copy_from_user(&p.plane_i
1132 sizeof(p.p
1133 r = -EFAULT;
1134 else
1135 r = omapfb_setup_plan
1136 break;
1137 case OMAPFB_QUERY_PLANE:
1138 if ((r = omapfb_query_plane(f
1139 break;
1140 if (copy_to_user((void __user
1141 sizeof(p.p
1142 r = -EFAULT;
1143 break;
1144 case OMAPFB_SETUP_MEM:
1145 if (copy_from_user(&p.mem_inf
1146 sizeof(p.m
1147 r = -EFAULT;
1148 else
1149 r = omapfb_setup_mem(
1150 break;
1151 case OMAPFB_QUERY_MEM:
1152 if ((r = omapfb_query_mem(fbi
1153 break;
1154 if (copy_to_user((void __user
1155 sizeof(p.m
1156 r = -EFAULT;
1157 break;
1158 case OMAPFB_SET_COLOR_KEY:
1159 if (copy_from_user(&p.color_k
1160 sizeof(p.c
1161 r = -EFAULT;
1162 else
1163 r = omapfb_set_color_
1164 break;
1165 case OMAPFB_GET_COLOR_KEY:
1166 if ((r = omapfb_get_color_key
1167 break;
1168 if (copy_to_user((void __user
1169 sizeof(p.col
1170 r = -EFAULT;
1171 break;
1172 case OMAPFB_GET_CAPS:
1173 omapfb_get_caps(fbdev, plane-
1174 if (copy_to_user((void __user
1175 r = -EFAULT;
1176 break;
1177 case OMAPFB_LCD_TEST:
1178 {
1179 int test_num;
1180
1181 if (get_user(test_num
1182 r = -EFAULT;
1183 break;
1184 }
1185 if (!fbdev->panel->ru
1186 r = -EINVAL;
1187 break;
1188 }
1189 r = fbdev->panel->run
1190 break;
1191 }
1192 case OMAPFB_CTRL_TEST:
1193 {
1194 int test_num;
1195
1196 if (get_user(test_num
1197 r = -EFAULT;
1198 break;
1199 }
1200 if (!fbdev->ctrl->run
1201 r = -EINVAL;
1202 break;
1203 }
1204 r = fbdev->ctrl->run_
1205 break;
1206 }
1207 default:
1208 r = -EINVAL;
1209 }
1210
1211 return r;
1212 }
1213
1214 static int omapfb_mmap(struct fb_info *info,
1215 {
1216 struct omapfb_plane_struct *plane = i
1217 struct omapfb_device *fbdev = plane->
1218 int r;
1219
1220 omapfb_rqueue_lock(fbdev);
1221 r = fbdev->ctrl->mmap(info, vma);
1222 omapfb_rqueue_unlock(fbdev);
1223
1224 return r;
1225 }
1226
1227 /*
1228 * Callback table for the frame buffer framew
1229 * will be changed according to the current s
1230 */
1231 static struct fb_ops omapfb_ops = {
1232 .owner = THIS_MODULE,
1233 .fb_open = omapfb_open,
1234 .fb_release = omapfb_release,
1235 .fb_setcolreg = omapfb_setcolreg,
1236 .fb_setcmap = omapfb_setcmap,
1237 .fb_fillrect = cfb_fillrect,
1238 .fb_copyarea = cfb_copyarea,
1239 .fb_imageblit = cfb_imageblit,
1240 .fb_blank = omapfb_blank,
1241 .fb_ioctl = omapfb_ioctl,
1242 .fb_check_var = omapfb_check_var,
1243 .fb_set_par = omapfb_set_par,
1244 .fb_rotate = omapfb_rotate,
1245 .fb_pan_display = omapfb_pan_display,
1246 };
1247
1248 /*
1249 * ------------------------------------------
1250 * Sysfs interface
1251 * ------------------------------------------
1252 */
1253 /* omapfbX sysfs entries */
1254 static ssize_t omapfb_show_caps_num(struct de
1255 struct de
1256 {
1257 struct omapfb_device *fbdev = dev_get
1258 int plane;
1259 size_t size;
1260 struct omapfb_caps caps;
1261
1262 plane = 0;
1263 size = 0;
1264 while (size < PAGE_SIZE && plane < OM
1265 omapfb_get_caps(fbdev, plane,
1266 size += snprintf(&buf[size],
1267 "plane#%d %#010x %#01
1268 plane, caps.ctrl, cap
1269 plane++;
1270 }
1271 return size;
1272 }
1273
1274 static ssize_t omapfb_show_caps_text(struct d
1275 struct d
1276 {
1277 struct omapfb_device *fbdev = dev_get
1278 int i;
1279 struct omapfb_caps caps;
1280 int plane;
1281 size_t size;
1282
1283 plane = 0;
1284 size = 0;
1285 while (size < PAGE_SIZE && plane < OM
1286 omapfb_get_caps(fbdev, plane,
1287 size += snprintf(&buf[size],
1288 "plane#%d:\n
1289 for (i = 0; i < ARRAY_SIZE(ct
1290 size < PAGE_SIZE; i++) {
1291 if (ctrl_caps[i].flag
1292 size += snpri
1293 " %s\
1294 }
1295 size += snprintf(&buf[size],
1296 " plane colo
1297 for (i = 0; i < ARRAY_SIZE(co
1298 size < PAGE_SIZE; i++) {
1299 if (color_caps[i].fla
1300 size += snpri
1301 " %s
1302 }
1303 size += snprintf(&buf[size],
1304 " window col
1305 for (i = 0; i < ARRAY_SIZE(co
1306 size < PAGE_SIZE; i++) {
1307 if (color_caps[i].fla
1308 size += snpri
1309 " %s
1310 }
1311
1312 plane++;
1313 }
1314 return size;
1315 }
1316
1317 static DEVICE_ATTR(caps_num, 0444, omapfb_sho
1318 static DEVICE_ATTR(caps_text, 0444, omapfb_sh
1319
1320 /* panel sysfs entries */
1321 static ssize_t omapfb_show_panel_name(struct
1322 struct
1323 {
1324 struct omapfb_device *fbdev = dev_get
1325
1326 return snprintf(buf, PAGE_SIZE, "%s\n
1327 }
1328
1329 static ssize_t omapfb_show_bklight_level(stru
1330 stru
1331 char
1332 {
1333 struct omapfb_device *fbdev = dev_get
1334 int r;
1335
1336 if (fbdev->panel->get_bklight_level)
1337 r = snprintf(buf, PAGE_SIZE,
1338 fbdev->panel->ge
1339 } else
1340 r = -ENODEV;
1341 return r;
1342 }
1343
1344 static ssize_t omapfb_store_bklight_level(str
1345 str
1346 con
1347 {
1348 struct omapfb_device *fbdev = dev_get
1349 int r;
1350
1351 if (fbdev->panel->set_bklight_level)
1352 unsigned int level;
1353
1354 if (sscanf(buf, "%10d", &leve
1355 r = fbdev->panel->set
1356
1357 } else
1358 r = -EINVAL;
1359 } else
1360 r = -ENODEV;
1361 return r ? r : size;
1362 }
1363
1364 static ssize_t omapfb_show_bklight_max(struct
1365 struct
1366 {
1367 struct omapfb_device *fbdev = dev_get
1368 int r;
1369
1370 if (fbdev->panel->get_bklight_level)
1371 r = snprintf(buf, PAGE_SIZE,
1372 fbdev->panel->ge
1373 } else
1374 r = -ENODEV;
1375 return r;
1376 }
1377
1378 static struct device_attribute dev_attr_panel
1379 __ATTR(name, 0444, omapfb_show_panel_
1380 static DEVICE_ATTR(backlight_level, 0664,
1381 omapfb_show_bklight_level,
1382 static DEVICE_ATTR(backlight_max, 0444, omapf
1383
1384 static struct attribute *panel_attrs[] = {
1385 &dev_attr_panel_name.attr,
1386 &dev_attr_backlight_level.attr,
1387 &dev_attr_backlight_max.attr,
1388 NULL,
1389 };
1390
1391 static struct attribute_group panel_attr_grp
1392 .name = "panel",
1393 .attrs = panel_attrs,
1394 };
1395
1396 /* ctrl sysfs entries */
1397 static ssize_t omapfb_show_ctrl_name(struct d
1398 struct d
1399 {
1400 struct omapfb_device *fbdev = dev_get
1401
1402 return snprintf(buf, PAGE_SIZE, "%s\n
1403 }
1404
1405 static struct device_attribute dev_attr_ctrl_
1406 __ATTR(name, 0444, omapfb_show_ctrl_n
1407
1408 static struct attribute *ctrl_attrs[] = {
1409 &dev_attr_ctrl_name.attr,
1410 NULL,
1411 };
1412
1413 static struct attribute_group ctrl_attr_grp =
1414 .name = "ctrl",
1415 .attrs = ctrl_attrs,
1416 };
1417
1418 static int omapfb_register_sysfs(struct omapf
1419 {
1420 int r;
1421
1422 if ((r = device_create_file(fbdev->de
1423 goto fail0;
1424
1425 if ((r = device_create_file(fbdev->de
1426 goto fail1;
1427
1428 if ((r = sysfs_create_group(&fbdev->d
1429 goto fail2;
1430
1431 if ((r = sysfs_create_group(&fbdev->d
1432 goto fail3;
1433
1434 return 0;
1435 fail3:
1436 sysfs_remove_group(&fbdev->dev->kobj,
1437 fail2:
1438 device_remove_file(fbdev->dev, &dev_a
1439 fail1:
1440 device_remove_file(fbdev->dev, &dev_a
1441 fail0:
1442 dev_err(fbdev->dev, "unable to regist
1443 return r;
1444 }
1445
1446 static void omapfb_unregister_sysfs(struct om
1447 {
1448 sysfs_remove_group(&fbdev->dev->kobj,
1449 sysfs_remove_group(&fbdev->dev->kobj,
1450 device_remove_file(fbdev->dev, &dev_a
1451 device_remove_file(fbdev->dev, &dev_a
1452 }
1453
1454 /*
1455 * ------------------------------------------
1456 * LDM callbacks
1457 * ------------------------------------------
1458 */
1459 /* Initialize system fb_info object and set t
1460 * The frame buffer memory already allocated
1461 */
1462 static int fbinfo_init(struct omapfb_device *
1463 {
1464 struct fb_var_screeninfo *var
1465 struct fb_fix_screeninfo *fix
1466 int r = 0
1467
1468 info->fbops = &omapfb_ops;
1469 info->flags = FBINFO_FLAG_DEFAULT;
1470
1471 strncpy(fix->id, MODULE_NAME, sizeof(
1472
1473 info->pseudo_palette = fbdev->pseudo_
1474
1475 var->accel_flags = def_accel ? FB_AC
1476 var->xres = def_vxres;
1477 var->yres = def_vyres;
1478 var->xres_virtual = def_vxres;
1479 var->yres_virtual = def_vyres;
1480 var->rotate = def_rotate;
1481 var->bits_per_pixel = fbdev->panel->b
1482
1483 set_fb_var(info, var);
1484 set_fb_fix(info);
1485
1486 r = fb_alloc_cmap(&info->cmap, 16, 0)
1487 if (r != 0)
1488 dev_err(fbdev->dev, "unable t
1489
1490 return r;
1491 }
1492
1493 /* Release the fb_info object */
1494 static void fbinfo_cleanup(struct omapfb_devi
1495 {
1496 fb_dealloc_cmap(&fbi->cmap);
1497 }
1498
1499 static void planes_cleanup(struct omapfb_devi
1500 {
1501 int i;
1502
1503 for (i = 0; i < fbdev->mem_desc.regio
1504 if (fbdev->fb_info[i] == NULL
1505 break;
1506 fbinfo_cleanup(fbdev, fbdev->
1507 framebuffer_release(fbdev->fb
1508 }
1509 }
1510
1511 static int planes_init(struct omapfb_device *
1512 {
1513 struct fb_info *fbi;
1514 int i;
1515 int r;
1516
1517 for (i = 0; i < fbdev->mem_desc.regio
1518 struct omapfb_plane_struct *p
1519 fbi = framebuffer_alloc(sizeo
1520 fbdev
1521 if (fbi == NULL) {
1522 dev_err(fbdev->dev,
1523 "unable to al
1524 planes_cleanup(fbdev)
1525 return -ENOMEM;
1526 }
1527 plane = fbi->par;
1528 plane->idx = i;
1529 plane->fbdev = fbdev;
1530 plane->info.mirror = def_mirr
1531 fbdev->fb_info[i] = fbi;
1532
1533 if ((r = fbinfo_init(fbdev, f
1534 framebuffer_release(f
1535 planes_cleanup(fbdev)
1536 return r;
1537 }
1538 plane->info.out_width = fbi->
1539 plane->info.out_height = fbi-
1540 }
1541 return 0;
1542 }
1543
1544 /*
1545 * Free driver resources. Can be called to ro
1546 * sequence.
1547 */
1548 static void omapfb_free_resources(struct omap
1549 {
1550 int i;
1551
1552 switch (state) {
1553 case OMAPFB_ACTIVE:
1554 for (i = 0; i < fbdev->mem_de
1555 unregister_framebuffe
1556 case 7:
1557 omapfb_unregister_sysfs(fbdev
1558 case 6:
1559 fbdev->panel->disable(fbdev->
1560 case 5:
1561 omapfb_set_update_mode(fbdev,
1562 case 4:
1563 planes_cleanup(fbdev);
1564 case 3:
1565 ctrl_cleanup(fbdev);
1566 case 2:
1567 fbdev->panel->cleanup(fbdev->
1568 case 1:
1569 dev_set_drvdata(fbdev->dev, N
1570 kfree(fbdev);
1571 case 0:
1572 /* nothing to free */
1573 break;
1574 default:
1575 BUG();
1576 }
1577 }
1578
1579 static int omapfb_find_ctrl(struct omapfb_dev
1580 {
1581 struct omapfb_platform_data *conf;
1582 char name[17];
1583 int i;
1584
1585 conf = fbdev->dev->platform_data;
1586
1587 fbdev->ctrl = NULL;
1588
1589 strncpy(name, conf->lcd.ctrl_name, si
1590 name[sizeof(name) - 1] = '\0';
1591
1592 if (strcmp(name, "internal") == 0) {
1593 fbdev->ctrl = fbdev->int_ctrl
1594 return 0;
1595 }
1596
1597 for (i = 0; i < ARRAY_SIZE(ctrls); i+
1598 dev_dbg(fbdev->dev, "ctrl %s\
1599 if (strcmp(ctrls[i]->name, na
1600 fbdev->ctrl = ctrls[i
1601 break;
1602 }
1603 }
1604
1605 if (fbdev->ctrl == NULL) {
1606 dev_dbg(fbdev->dev, "ctrl %s
1607 return -1;
1608 }
1609
1610 return 0;
1611 }
1612
1613 static void check_required_callbacks(struct o
1614 {
1615 #define _C(x) (fbdev->ctrl->x != NULL)
1616 #define _P(x) (fbdev->panel->x != NULL)
1617 BUG_ON(fbdev->ctrl == NULL || fbdev->
1618 BUG_ON(!(_C(init) && _C(cleanup) && _
1619 _C(set_update_mode) && _C(se
1620 _P(init) && _P(cleanup) && _
1621 _P(get_caps)));
1622 #undef _P
1623 #undef _C
1624 }
1625
1626 /*
1627 * Called by LDM binding to probe and attach
1628 * Initialization sequence:
1629 * 1. allocate system omapfb_device structu
1630 * 2. select controller type according to p
1631 * init LCD panel
1632 * 3. init LCD controller and LCD DMA
1633 * 4. init system fb_info structure for all
1634 * 5. setup video mode for first plane and
1635 * 6. enable LCD panel
1636 * 7. register sysfs attributes
1637 * OMAPFB_ACTIVE: register system fb_info s
1638 */
1639 static int omapfb_do_probe(struct platform_de
1640 struct lcd_pa
1641 {
1642 struct omapfb_device *fbdev = NULL
1643 int init_state;
1644 unsigned long phz, hhz, vhz
1645 unsigned long vram;
1646 int i;
1647 int r = 0;
1648
1649 init_state = 0;
1650
1651 if (pdev->num_resources != 0) {
1652 dev_err(&pdev->dev, "probed f
1653 r = -ENODEV;
1654 goto cleanup;
1655 }
1656
1657 if (pdev->dev.platform_data == NULL)
1658 dev_err(&pdev->dev, "missing
1659 r = -ENOENT;
1660 goto cleanup;
1661 }
1662
1663 fbdev = kzalloc(sizeof(struct omapfb_
1664 if (fbdev == NULL) {
1665 dev_err(&pdev->dev,
1666 "unable to allocate m
1667 r = -ENOMEM;
1668 goto cleanup;
1669 }
1670 init_state++;
1671
1672 fbdev->dev = &pdev->dev;
1673 fbdev->panel = panel;
1674 platform_set_drvdata(pdev, fbdev);
1675
1676 mutex_init(&fbdev->rqueue_mutex);
1677
1678 #ifdef CONFIG_ARCH_OMAP1
1679 fbdev->int_ctrl = &omap1_int_ctrl;
1680 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1681 fbdev->ext_if = &omap1_ext_if;
1682 #endif
1683 #else /* OMAP2 */
1684 fbdev->int_ctrl = &omap2_int_ctrl;
1685 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1686 fbdev->ext_if = &omap2_ext_if;
1687 #endif
1688 #endif
1689 if (omapfb_find_ctrl(fbdev) < 0) {
1690 dev_err(fbdev->dev,
1691 "LCD controller not f
1692 r = -ENODEV;
1693 goto cleanup;
1694 }
1695
1696 r = fbdev->panel->init(fbdev->panel,
1697 if (r)
1698 goto cleanup;
1699
1700 pr_info("omapfb: configured for panel
1701
1702 def_vxres = def_vxres ? : fbdev->pane
1703 def_vyres = def_vyres ? : fbdev->pane
1704
1705 init_state++;
1706
1707 r = ctrl_init(fbdev);
1708 if (r)
1709 goto cleanup;
1710 if (fbdev->ctrl->mmap != NULL)
1711 omapfb_ops.fb_mmap = omapfb_m
1712 init_state++;
1713
1714 check_required_callbacks(fbdev);
1715
1716 r = planes_init(fbdev);
1717 if (r)
1718 goto cleanup;
1719 init_state++;
1720
1721 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1722 /* Set DMA priority for EMIFF access
1723 if (cpu_class_is_omap1())
1724 omap_set_dma_priority(0, OMAP
1725 #endif
1726
1727 r = ctrl_change_mode(fbdev->fb_info[0
1728 if (r) {
1729 dev_err(fbdev->dev, "mode set
1730 goto cleanup;
1731 }
1732
1733 /* GFX plane is enabled by default */
1734 r = fbdev->ctrl->enable_plane(OMAPFB_
1735 if (r)
1736 goto cleanup;
1737
1738 omapfb_set_update_mode(fbdev, manual_
1739 OMAPFB_MAN
1740 init_state++;
1741
1742 r = fbdev->panel->enable(fbdev->panel
1743 if (r)
1744 goto cleanup;
1745 init_state++;
1746
1747 r = omapfb_register_sysfs(fbdev);
1748 if (r)
1749 goto cleanup;
1750 init_state++;
1751
1752 vram = 0;
1753 for (i = 0; i < fbdev->mem_desc.regio
1754 r = register_framebuffer(fbde
1755 if (r != 0) {
1756 dev_err(fbdev->dev,
1757 "registering
1758 goto cleanup;
1759 }
1760 vram += fbdev->mem_desc.regio
1761 }
1762
1763 fbdev->state = OMAPFB_ACTIVE;
1764
1765 panel = fbdev->panel;
1766 phz = panel->pixel_clock * 1000;
1767 hhz = phz * 10 / (panel->hfp + panel-
1768 vhz = hhz / (panel->vfp + panel->y_re
1769
1770 omapfb_dev = fbdev;
1771
1772 pr_info("omapfb: Framebuffer initiali
1773 vram, fbdev->mem_desc
1774 pr_info("omapfb: Pixclock %lu kHz hfr
1775 "vfreq %lu.%lu Hz\n",
1776 phz / 1000, hhz / 100
1777
1778 return 0;
1779
1780 cleanup:
1781 omapfb_free_resources(fbdev, init_sta
1782
1783 return r;
1784 }
1785
1786 static int omapfb_probe(struct platform_devic
1787 {
1788 BUG_ON(fbdev_pdev != NULL);
1789
1790 /* Delay actual initialization until
1791 fbdev_pdev = pdev;
1792 if (fbdev_panel != NULL)
1793 omapfb_do_probe(fbdev_pdev, f
1794 return 0;
1795 }
1796
1797 void omapfb_register_panel(struct lcd_panel *
1798 {
1799 BUG_ON(fbdev_panel != NULL);
1800
1801 fbdev_panel = panel;
1802 if (fbdev_pdev != NULL)
1803 omapfb_do_probe(fbdev_pdev, f
1804 }
1805
1806 /* Called when the device is being detached f
1807 static int omapfb_remove(struct platform_devi
1808 {
1809 struct omapfb_device *fbdev = platfor
1810 enum omapfb_state saved_state = fbdev
1811
1812 /* FIXME: wait till completion of pen
1813
1814 fbdev->state = OMAPFB_DISABLED;
1815 omapfb_free_resources(fbdev, saved_st
1816
1817 return 0;
1818 }
1819
1820 /* PM suspend */
1821 static int omapfb_suspend(struct platform_dev
1822 {
1823 struct omapfb_device *fbdev = platfor
1824
1825 omapfb_blank(FB_BLANK_POWERDOWN, fbde
1826
1827 return 0;
1828 }
1829
1830 /* PM resume */
1831 static int omapfb_resume(struct platform_devi
1832 {
1833 struct omapfb_device *fbdev = platfor
1834
1835 omapfb_blank(FB_BLANK_UNBLANK, fbdev-
1836 return 0;
1837 }
1838
1839 static struct platform_driver omapfb_driver =
1840 .probe = omapfb_probe,
1841 .remove = omapfb_remove,
1842 .suspend = omapfb_suspend,
1843 .resume = omapfb_resume,
1844 .driver = {
1845 .name = MODULE_NAME,
1846 .owner = THIS_MODULE,
1847 },
1848 };
1849
1850 #ifndef MODULE
1851
1852 /* Process kernel command line parameters */
1853 static int __init omapfb_setup(char *options)
1854 {
1855 char *this_opt = NULL;
1856 int r = 0;
1857
1858 pr_debug("omapfb: options %s\n", opti
1859
1860 if (!options || !*options)
1861 return 0;
1862
1863 while (!r && (this_opt = strsep(&opti
1864 if (!strncmp(this_opt, "accel
1865 def_accel = 1;
1866 else if (!strncmp(this_opt, "
1867 char *suffix;
1868 unsigned long vram;
1869 vram = (simple_strtou
1870 switch (suffix[0]) {
1871 case '\0':
1872 break;
1873 case 'm':
1874 case 'M':
1875 vram *= 1024;
1876 /* Fall throu
1877 case 'k':
1878 case 'K':
1879 vram *= 1024;
1880 break;
1881 default:
1882 pr_debug("oma
1883 suff
1884 r = -1;
1885 }
1886 def_vram[def_vram_cnt
1887 }
1888 else if (!strncmp(this_opt, "
1889 def_vxres = simple_st
1890 else if (!strncmp(this_opt, "
1891 def_vyres = simple_st
1892 else if (!strncmp(this_opt, "
1893 def_rotate = (simple_
1894 else if (!strncmp(this_opt, "
1895 def_mirror = (simple_
1896 else if (!strncmp(this_opt, "
1897 manual_update = 1;
1898 else {
1899 pr_debug("omapfb: inv
1900 r = -1;
1901 }
1902 }
1903
1904 return r;
1905 }
1906
1907 #endif
1908
1909 /* Register both the driver and the device */
1910 static int __init omapfb_init(void)
1911 {
1912 #ifndef MODULE
1913 char *option;
1914
1915 if (fb_get_options("omapfb", &option)
1916 return -ENODEV;
1917 omapfb_setup(option);
1918 #endif
1919 /* Register the driver with LDM */
1920 if (platform_driver_register(&omapfb_
1921 pr_debug("failed to register
1922 return -ENODEV;
1923 }
1924
1925 return 0;
1926 }
1927
1928 static void __exit omapfb_cleanup(void)
1929 {
1930 platform_driver_unregister(&omapfb_dr
1931 }
1932
1933 module_param_named(accel, def_accel, uint, 06
1934 module_param_array_named(vram, def_vram, ulon
1935 module_param_named(vxres, def_vxres, long, 06
1936 module_param_named(vyres, def_vyres, long, 06
1937 module_param_named(rotate, def_rotate, uint,
1938 module_param_named(mirror, def_mirror, uint,
1939 module_param_named(manual_update, manual_upda
1940
1941 module_init(omapfb_init);
1942 module_exit(omapfb_cleanup);
1943
1944 MODULE_DESCRIPTION("TI OMAP framebuffer drive
1945 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com
1946 MODULE_LICENSE("GPL");
1947
| This page was automatically generated by the LXR engine. |