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sh_eth: fix EESIPR values for SH77{34|63}
[linux/fpc-iii.git] / drivers / video / fbdev / omap / omapfb_main.c
blob6429f33167f5ef99e00f09e1491d235c00e0fa53
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> - Original driver
9 * Juha Yrjola <juha.yrjola@nokia.com> - Original driver and improvements
10 * Dirk Behme <dirk.behme@de.bosch.com> - changes for 2.6 kernel API
11 * Texas Instruments - H3 support
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful, but
19 * WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 */
27 #include <linux/platform_device.h>
28 #include <linux/mm.h>
29 #include <linux/slab.h>
30 #include <linux/uaccess.h>
31 #include <linux/module.h>
32
33 #include <linux/omap-dma.h>
34
35 #include <mach/hardware.h>
36
37 #include "omapfb.h"
38 #include "lcdc.h"
39
40 #define MODULE_NAME "omapfb"
41
42 static unsigned int def_accel;
43 static unsigned long def_vram[OMAPFB_PLANE_NUM];
44 static unsigned int def_vram_cnt;
45 static unsigned long def_vxres;
46 static unsigned long def_vyres;
47 static unsigned int def_rotate;
48 static unsigned int def_mirror;
49
50 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
51 static bool manual_update = 1;
52 #else
53 static bool manual_update;
54 #endif
55
56 static struct platform_device *fbdev_pdev;
57 static struct lcd_panel *fbdev_panel;
58 static struct omapfb_device *omapfb_dev;
59
60 struct caps_table_struct {
61 unsigned long flag;
62 const char *name;
63 };
64
65 static struct caps_table_struct ctrl_caps[] = {
66 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
67 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" },
68 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
69 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" },
70 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
71 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" },
72 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" },
73 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" },
74 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
75 };
76
77 static struct caps_table_struct color_caps[] = {
78 { 1 << OMAPFB_COLOR_RGB565, "RGB565", },
79 { 1 << OMAPFB_COLOR_YUV422, "YUV422", },
80 { 1 << OMAPFB_COLOR_YUV420, "YUV420", },
81 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", },
82 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", },
83 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", },
84 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", },
85 { 1 << OMAPFB_COLOR_RGB444, "RGB444", },
86 { 1 << OMAPFB_COLOR_YUY422, "YUY422", },
87 };
88
89 static void omapdss_release(struct device *dev)
90 {
91 }
92
93 /* dummy device for clocks */
94 static struct platform_device omapdss_device = {
95 .name = "omapdss_dss",
96 .id = -1,
97 .dev = {
98 .release = omapdss_release,
99 },
100 };
101
102 /*
103 * ---------------------------------------------------------------------------
104 * LCD panel
105 * ---------------------------------------------------------------------------
106 */
107 extern struct lcd_ctrl hwa742_ctrl;
108
109 static const struct lcd_ctrl *ctrls[] = {
110 &omap1_int_ctrl,
111
112 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
113 &hwa742_ctrl,
114 #endif
115 };
116
117 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
118 extern struct lcd_ctrl_extif omap1_ext_if;
119 #endif
120
121 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
122 {
123 mutex_lock(&fbdev->rqueue_mutex);
124 }
125
126 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
127 {
128 mutex_unlock(&fbdev->rqueue_mutex);
129 }
130
131 /*
132 * ---------------------------------------------------------------------------
133 * LCD controller and LCD DMA
134 * ---------------------------------------------------------------------------
135 */
136 /*
137 * Allocate resources needed for LCD controller and LCD DMA operations. Video
138 * memory is allocated from system memory according to the virtual display
139 * size, except if a bigger memory size is specified explicitly as a kernel
140 * parameter.
141 */
142 static int ctrl_init(struct omapfb_device *fbdev)
143 {
144 int r;
145 int i;
146
147 /* kernel/module vram parameters override boot tags/board config */
148 if (def_vram_cnt) {
149 for (i = 0; i < def_vram_cnt; i++)
150 fbdev->mem_desc.region[i].size =
151 PAGE_ALIGN(def_vram[i]);
152 fbdev->mem_desc.region_cnt = i;
153 }
154
155 if (!fbdev->mem_desc.region_cnt) {
156 struct lcd_panel *panel = fbdev->panel;
157 int def_size;
158 int bpp = panel->bpp;
159
160 /* 12 bpp is packed in 16 bits */
161 if (bpp == 12)
162 bpp = 16;
163 def_size = def_vxres * def_vyres * bpp / 8;
164 fbdev->mem_desc.region_cnt = 1;
165 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
166 }
167 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
168 if (r < 0) {
169 dev_err(fbdev->dev, "controller initialization failed (%d)\n",
170 r);
171 return r;
172 }
173
174 #ifdef DEBUG
175 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
176 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
177 i,
178 fbdev->mem_desc.region[i].paddr,
179 fbdev->mem_desc.region[i].vaddr,
180 fbdev->mem_desc.region[i].size);
181 }
182 #endif
183 return 0;
184 }
185
186 static void ctrl_cleanup(struct omapfb_device *fbdev)
187 {
188 fbdev->ctrl->cleanup();
189 }
190
191 /* Must be called with fbdev->rqueue_mutex held. */
192 static int ctrl_change_mode(struct fb_info *fbi)
193 {
194 int r;
195 unsigned long offset;
196 struct omapfb_plane_struct *plane = fbi->par;
197 struct omapfb_device *fbdev = plane->fbdev;
198 struct fb_var_screeninfo *var = &fbi->var;
199
200 offset = var->yoffset * fbi->fix.line_length +
201 var->xoffset * var->bits_per_pixel / 8;
202
203 if (fbdev->ctrl->sync)
204 fbdev->ctrl->sync();
205 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
206 offset, var->xres_virtual,
207 plane->info.pos_x, plane->info.pos_y,
208 var->xres, var->yres, plane->color_mode);
209 if (r < 0)
210 return r;
211
212 if (fbdev->ctrl->set_rotate != NULL) {
213 r = fbdev->ctrl->set_rotate(var->rotate);
214 if (r < 0)
215 return r;
216 }
217
218 if (fbdev->ctrl->set_scale != NULL)
219 r = fbdev->ctrl->set_scale(plane->idx,
220 var->xres, var->yres,
221 plane->info.out_width,
222 plane->info.out_height);
223
224 return r;
225 }
226
227 /*
228 * ---------------------------------------------------------------------------
229 * fbdev framework callbacks and the ioctl interface
230 * ---------------------------------------------------------------------------
231 */
232 /* Called each time the omapfb device is opened */
233 static int omapfb_open(struct fb_info *info, int user)
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 make sure that any pending
241 * gfx DMA operations are ended, before we return. */
242 static int omapfb_release(struct fb_info *info, int user)
243 {
244 omapfb_sync(info);
245 return 0;
246 }
247
248 /* Store a single color palette entry into a pseudo palette or the hardware
249 * palette if one is available. For now we support only 16bpp and thus store
250 * the entry only to the pseudo palette.
251 */
252 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
253 u_int blue, u_int transp, int update_hw_pal)
254 {
255 struct omapfb_plane_struct *plane = info->par;
256 struct omapfb_device *fbdev = plane->fbdev;
257 struct fb_var_screeninfo *var = &info->var;
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->setcolreg(regno, red, green, blue,
272 transp, update_hw_pal);
273 /* Fallthrough */
274 case OMAPFB_COLOR_RGB565:
275 case OMAPFB_COLOR_RGB444:
276 if (r != 0)
277 break;
278
279 if (regno < 16) {
280 u16 pal;
281 pal = ((red >> (16 - var->red.length)) <<
282 var->red.offset) |
283 ((green >> (16 - var->green.length)) <<
284 var->green.offset) |
285 (blue >> (16 - var->blue.length));
286 ((u32 *)(info->pseudo_palette))[regno] = pal;
287 }
288 break;
289 default:
290 BUG();
291 }
292 return r;
293 }
294
295 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
296 u_int transp, struct fb_info *info)
297 {
298 return _setcolreg(info, regno, red, green, blue, transp, 1);
299 }
300
301 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
302 {
303 int count, index, r;
304 u16 *red, *green, *blue, *transp;
305 u16 trans = 0xffff;
306
307 red = cmap->red;
308 green = cmap->green;
309 blue = cmap->blue;
310 transp = cmap->transp;
311 index = cmap->start;
312
313 for (count = 0; count < cmap->len; count++) {
314 if (transp)
315 trans = *transp++;
316 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
317 count == cmap->len - 1);
318 if (r != 0)
319 return r;
320 }
321
322 return 0;
323 }
324
325 static int omapfb_update_full_screen(struct fb_info *fbi);
326
327 static int omapfb_blank(int blank, struct fb_info *fbi)
328 {
329 struct omapfb_plane_struct *plane = fbi->par;
330 struct omapfb_device *fbdev = plane->fbdev;
331 int do_update = 0;
332 int r = 0;
333
334 omapfb_rqueue_lock(fbdev);
335 switch (blank) {
336 case FB_BLANK_UNBLANK:
337 if (fbdev->state == OMAPFB_SUSPENDED) {
338 if (fbdev->ctrl->resume)
339 fbdev->ctrl->resume();
340 fbdev->panel->enable(fbdev->panel);
341 fbdev->state = OMAPFB_ACTIVE;
342 if (fbdev->ctrl->get_update_mode() ==
343 OMAPFB_MANUAL_UPDATE)
344 do_update = 1;
345 }
346 break;
347 case FB_BLANK_POWERDOWN:
348 if (fbdev->state == OMAPFB_ACTIVE) {
349 fbdev->panel->disable(fbdev->panel);
350 if (fbdev->ctrl->suspend)
351 fbdev->ctrl->suspend();
352 fbdev->state = OMAPFB_SUSPENDED;
353 }
354 break;
355 default:
356 r = -EINVAL;
357 }
358 omapfb_rqueue_unlock(fbdev);
359
360 if (r == 0 && do_update)
361 r = omapfb_update_full_screen(fbi);
362
363 return r;
364 }
365
366 static void omapfb_sync(struct fb_info *fbi)
367 {
368 struct omapfb_plane_struct *plane = fbi->par;
369 struct omapfb_device *fbdev = plane->fbdev;
370
371 omapfb_rqueue_lock(fbdev);
372 if (fbdev->ctrl->sync)
373 fbdev->ctrl->sync();
374 omapfb_rqueue_unlock(fbdev);
375 }
376
377 /*
378 * Set fb_info.fix fields and also updates fbdev.
379 * When calling this fb_info.var must be set up already.
380 */
381 static void set_fb_fix(struct fb_info *fbi, int from_init)
382 {
383 struct fb_fix_screeninfo *fix = &fbi->fix;
384 struct fb_var_screeninfo *var = &fbi->var;
385 struct omapfb_plane_struct *plane = fbi->par;
386 struct omapfb_mem_region *rg;
387 int bpp;
388
389 rg = &plane->fbdev->mem_desc.region[plane->idx];
390 fbi->screen_base = rg->vaddr;
391
392 if (!from_init) {
393 mutex_lock(&fbi->mm_lock);
394 fix->smem_start = rg->paddr;
395 fix->smem_len = rg->size;
396 mutex_unlock(&fbi->mm_lock);
397 } else {
398 fix->smem_start = rg->paddr;
399 fix->smem_len = rg->size;
400 }
401
402 fix->type = FB_TYPE_PACKED_PIXELS;
403 bpp = var->bits_per_pixel;
404 if (var->nonstd)
405 fix->visual = FB_VISUAL_PSEUDOCOLOR;
406 else switch (var->bits_per_pixel) {
407 case 16:
408 case 12:
409 fix->visual = FB_VISUAL_TRUECOLOR;
410 /* 12bpp is stored in 16 bits */
411 bpp = 16;
412 break;
413 case 1:
414 case 2:
415 case 4:
416 case 8:
417 fix->visual = FB_VISUAL_PSEUDOCOLOR;
418 break;
419 }
420 fix->accel = FB_ACCEL_OMAP1610;
421 fix->line_length = var->xres_virtual * bpp / 8;
422 }
423
424 static int set_color_mode(struct omapfb_plane_struct *plane,
425 struct fb_var_screeninfo *var)
426 {
427 switch (var->nonstd) {
428 case 0:
429 break;
430 case OMAPFB_COLOR_YUV422:
431 var->bits_per_pixel = 16;
432 plane->color_mode = var->nonstd;
433 return 0;
434 case OMAPFB_COLOR_YUV420:
435 var->bits_per_pixel = 12;
436 plane->color_mode = var->nonstd;
437 return 0;
438 case OMAPFB_COLOR_YUY422:
439 var->bits_per_pixel = 16;
440 plane->color_mode = var->nonstd;
441 return 0;
442 default:
443 return -EINVAL;
444 }
445
446 switch (var->bits_per_pixel) {
447 case 1:
448 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
449 return 0;
450 case 2:
451 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
452 return 0;
453 case 4:
454 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
455 return 0;
456 case 8:
457 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
458 return 0;
459 case 12:
460 var->bits_per_pixel = 16;
461 case 16:
462 if (plane->fbdev->panel->bpp == 12)
463 plane->color_mode = OMAPFB_COLOR_RGB444;
464 else
465 plane->color_mode = OMAPFB_COLOR_RGB565;
466 return 0;
467 default:
468 return -EINVAL;
469 }
470 }
471
472 /*
473 * Check the values in var against our capabilities and in case of out of
474 * bound values try to adjust them.
475 */
476 static int set_fb_var(struct fb_info *fbi,
477 struct fb_var_screeninfo *var)
478 {
479 int bpp;
480 unsigned long max_frame_size;
481 unsigned long line_size;
482 int xres_min, xres_max;
483 int yres_min, yres_max;
484 struct omapfb_plane_struct *plane = fbi->par;
485 struct omapfb_device *fbdev = plane->fbdev;
486 struct lcd_panel *panel = fbdev->panel;
487
488 if (set_color_mode(plane, var) < 0)
489 return -EINVAL;
490
491 bpp = var->bits_per_pixel;
492 if (plane->color_mode == OMAPFB_COLOR_RGB444)
493 bpp = 16;
494
495 switch (var->rotate) {
496 case 0:
497 case 180:
498 xres_min = OMAPFB_PLANE_XRES_MIN;
499 xres_max = panel->x_res;
500 yres_min = OMAPFB_PLANE_YRES_MIN;
501 yres_max = panel->y_res;
502 if (cpu_is_omap15xx()) {
503 var->xres = panel->x_res;
504 var->yres = panel->y_res;
505 }
506 break;
507 case 90:
508 case 270:
509 xres_min = OMAPFB_PLANE_YRES_MIN;
510 xres_max = panel->y_res;
511 yres_min = OMAPFB_PLANE_XRES_MIN;
512 yres_max = panel->x_res;
513 if (cpu_is_omap15xx()) {
514 var->xres = panel->y_res;
515 var->yres = panel->x_res;
516 }
517 break;
518 default:
519 return -EINVAL;
520 }
521
522 if (var->xres < xres_min)
523 var->xres = xres_min;
524 if (var->yres < yres_min)
525 var->yres = yres_min;
526 if (var->xres > xres_max)
527 var->xres = xres_max;
528 if (var->yres > yres_max)
529 var->yres = yres_max;
530
531 if (var->xres_virtual < var->xres)
532 var->xres_virtual = var->xres;
533 if (var->yres_virtual < var->yres)
534 var->yres_virtual = var->yres;
535 max_frame_size = fbdev->mem_desc.region[plane->idx].size;
536 line_size = var->xres_virtual * bpp / 8;
537 if (line_size * var->yres_virtual > max_frame_size) {
538 /* Try to keep yres_virtual first */
539 line_size = max_frame_size / var->yres_virtual;
540 var->xres_virtual = line_size * 8 / bpp;
541 if (var->xres_virtual < var->xres) {
542 /* Still doesn't fit. Shrink yres_virtual too */
543 var->xres_virtual = var->xres;
544 line_size = var->xres * bpp / 8;
545 var->yres_virtual = max_frame_size / line_size;
546 }
547 /* Recheck this, as the virtual size changed. */
548 if (var->xres_virtual < var->xres)
549 var->xres = var->xres_virtual;
550 if (var->yres_virtual < var->yres)
551 var->yres = var->yres_virtual;
552 if (var->xres < xres_min || var->yres < yres_min)
553 return -EINVAL;
554 }
555 if (var->xres + var->xoffset > var->xres_virtual)
556 var->xoffset = var->xres_virtual - var->xres;
557 if (var->yres + var->yoffset > var->yres_virtual)
558 var->yoffset = var->yres_virtual - var->yres;
559
560 if (plane->color_mode == OMAPFB_COLOR_RGB444) {
561 var->red.offset = 8; var->red.length = 4;
562 var->red.msb_right = 0;
563 var->green.offset = 4; var->green.length = 4;
564 var->green.msb_right = 0;
565 var->blue.offset = 0; var->blue.length = 4;
566 var->blue.msb_right = 0;
567 } else {
568 var->red.offset = 11; var->red.length = 5;
569 var->red.msb_right = 0;
570 var->green.offset = 5; var->green.length = 6;
571 var->green.msb_right = 0;
572 var->blue.offset = 0; var->blue.length = 5;
573 var->blue.msb_right = 0;
574 }
575
576 var->height = -1;
577 var->width = -1;
578 var->grayscale = 0;
579
580 /* pixclock in ps, the rest in pixclock */
581 var->pixclock = 10000000 / (panel->pixel_clock / 100);
582 var->left_margin = panel->hfp;
583 var->right_margin = panel->hbp;
584 var->upper_margin = panel->vfp;
585 var->lower_margin = panel->vbp;
586 var->hsync_len = panel->hsw;
587 var->vsync_len = panel->vsw;
588
589 /* TODO: get these from panel->config */
590 var->vmode = FB_VMODE_NONINTERLACED;
591 var->sync = 0;
592
593 return 0;
594 }
595
596
597 /*
598 * Set new x,y offsets in the virtual display for the visible area and switch
599 * to the new mode.
600 */
601 static int omapfb_pan_display(struct fb_var_screeninfo *var,
602 struct fb_info *fbi)
603 {
604 struct omapfb_plane_struct *plane = fbi->par;
605 struct omapfb_device *fbdev = plane->fbdev;
606 int r = 0;
607
608 omapfb_rqueue_lock(fbdev);
609 if (var->xoffset != fbi->var.xoffset ||
610 var->yoffset != fbi->var.yoffset) {
611 struct fb_var_screeninfo *new_var = &fbdev->new_var;
612
613 memcpy(new_var, &fbi->var, sizeof(*new_var));
614 new_var->xoffset = var->xoffset;
615 new_var->yoffset = var->yoffset;
616 if (set_fb_var(fbi, new_var))
617 r = -EINVAL;
618 else {
619 memcpy(&fbi->var, new_var, sizeof(*new_var));
620 ctrl_change_mode(fbi);
621 }
622 }
623 omapfb_rqueue_unlock(fbdev);
624
625 return r;
626 }
627
628 /* Set mirror to vertical axis and switch to the new mode. */
629 static int omapfb_mirror(struct fb_info *fbi, int mirror)
630 {
631 struct omapfb_plane_struct *plane = fbi->par;
632 struct omapfb_device *fbdev = plane->fbdev;
633 int r = 0;
634
635 omapfb_rqueue_lock(fbdev);
636 mirror = mirror ? 1 : 0;
637 if (cpu_is_omap15xx())
638 r = -EINVAL;
639 else if (mirror != plane->info.mirror) {
640 plane->info.mirror = mirror;
641 r = ctrl_change_mode(fbi);
642 }
643 omapfb_rqueue_unlock(fbdev);
644
645 return r;
646 }
647
648 /*
649 * Check values in var, try to adjust them in case of out of bound values if
650 * possible, or return error.
651 */
652 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
653 {
654 struct omapfb_plane_struct *plane = fbi->par;
655 struct omapfb_device *fbdev = plane->fbdev;
656 int r;
657
658 omapfb_rqueue_lock(fbdev);
659 if (fbdev->ctrl->sync != NULL)
660 fbdev->ctrl->sync();
661 r = set_fb_var(fbi, var);
662 omapfb_rqueue_unlock(fbdev);
663
664 return r;
665 }
666
667 /*
668 * Switch to a new mode. The parameters for it has been check already by
669 * omapfb_check_var.
670 */
671 static int omapfb_set_par(struct fb_info *fbi)
672 {
673 struct omapfb_plane_struct *plane = fbi->par;
674 struct omapfb_device *fbdev = plane->fbdev;
675 int r = 0;
676
677 omapfb_rqueue_lock(fbdev);
678 set_fb_fix(fbi, 0);
679 r = ctrl_change_mode(fbi);
680 omapfb_rqueue_unlock(fbdev);
681
682 return r;
683 }
684
685 int omapfb_update_window_async(struct fb_info *fbi,
686 struct omapfb_update_window *win,
687 void (*callback)(void *),
688 void *callback_data)
689 {
690 int xres, yres;
691 struct omapfb_plane_struct *plane = fbi->par;
692 struct omapfb_device *fbdev = plane->fbdev;
693 struct fb_var_screeninfo *var = &fbi->var;
694
695 switch (var->rotate) {
696 case 0:
697 case 180:
698 xres = fbdev->panel->x_res;
699 yres = fbdev->panel->y_res;
700 break;
701 case 90:
702 case 270:
703 xres = fbdev->panel->y_res;
704 yres = fbdev->panel->x_res;
705 break;
706 default:
707 return -EINVAL;
708 }
709
710 if (win->x >= xres || win->y >= yres ||
711 win->out_x > xres || win->out_y > yres)
712 return -EINVAL;
713
714 if (!fbdev->ctrl->update_window ||
715 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
716 return -ENODEV;
717
718 if (win->x + win->width > xres)
719 win->width = xres - win->x;
720 if (win->y + win->height > yres)
721 win->height = yres - win->y;
722 if (win->out_x + win->out_width > xres)
723 win->out_width = xres - win->out_x;
724 if (win->out_y + win->out_height > yres)
725 win->out_height = yres - win->out_y;
726 if (!win->width || !win->height || !win->out_width || !win->out_height)
727 return 0;
728
729 return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
730 }
731 EXPORT_SYMBOL(omapfb_update_window_async);
732
733 static int omapfb_update_win(struct fb_info *fbi,
734 struct omapfb_update_window *win)
735 {
736 struct omapfb_plane_struct *plane = fbi->par;
737 int ret;
738
739 omapfb_rqueue_lock(plane->fbdev);
740 ret = omapfb_update_window_async(fbi, win, NULL, NULL);
741 omapfb_rqueue_unlock(plane->fbdev);
742
743 return ret;
744 }
745
746 static int omapfb_update_full_screen(struct fb_info *fbi)
747 {
748 struct omapfb_plane_struct *plane = fbi->par;
749 struct omapfb_device *fbdev = plane->fbdev;
750 struct omapfb_update_window win;
751 int r;
752
753 if (!fbdev->ctrl->update_window ||
754 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
755 return -ENODEV;
756
757 win.x = 0;
758 win.y = 0;
759 win.width = fbi->var.xres;
760 win.height = fbi->var.yres;
761 win.out_x = 0;
762 win.out_y = 0;
763 win.out_width = fbi->var.xres;
764 win.out_height = fbi->var.yres;
765 win.format = 0;
766
767 omapfb_rqueue_lock(fbdev);
768 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
769 omapfb_rqueue_unlock(fbdev);
770
771 return r;
772 }
773
774 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
775 {
776 struct omapfb_plane_struct *plane = fbi->par;
777 struct omapfb_device *fbdev = plane->fbdev;
778 struct lcd_panel *panel = fbdev->panel;
779 struct omapfb_plane_info old_info;
780 int r = 0;
781
782 if (pi->pos_x + pi->out_width > panel->x_res ||
783 pi->pos_y + pi->out_height > panel->y_res)
784 return -EINVAL;
785
786 omapfb_rqueue_lock(fbdev);
787 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
788 /*
789 * This plane's memory was freed, can't enable it
790 * until it's reallocated.
791 */
792 r = -EINVAL;
793 goto out;
794 }
795 old_info = plane->info;
796 plane->info = *pi;
797 if (pi->enabled) {
798 r = ctrl_change_mode(fbi);
799 if (r < 0) {
800 plane->info = old_info;
801 goto out;
802 }
803 }
804 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
805 if (r < 0) {
806 plane->info = old_info;
807 goto out;
808 }
809 out:
810 omapfb_rqueue_unlock(fbdev);
811 return r;
812 }
813
814 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
815 {
816 struct omapfb_plane_struct *plane = fbi->par;
817
818 *pi = plane->info;
819 return 0;
820 }
821
822 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
823 {
824 struct omapfb_plane_struct *plane = fbi->par;
825 struct omapfb_device *fbdev = plane->fbdev;
826 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
827 size_t size;
828 int r = 0;
829
830 if (fbdev->ctrl->setup_mem == NULL)
831 return -ENODEV;
832 if (mi->type != OMAPFB_MEMTYPE_SDRAM)
833 return -EINVAL;
834
835 size = PAGE_ALIGN(mi->size);
836 omapfb_rqueue_lock(fbdev);
837 if (plane->info.enabled) {
838 r = -EBUSY;
839 goto out;
840 }
841 if (rg->size != size || rg->type != mi->type) {
842 struct fb_var_screeninfo *new_var = &fbdev->new_var;
843 unsigned long old_size = rg->size;
844 u8 old_type = rg->type;
845 unsigned long paddr;
846
847 rg->size = size;
848 rg->type = mi->type;
849 /*
850 * size == 0 is a special case, for which we
851 * don't check / adjust the screen parameters.
852 * This isn't a problem since the plane can't
853 * be reenabled unless its size is > 0.
854 */
855 if (old_size != size && size) {
856 if (size) {
857 memcpy(new_var, &fbi->var, sizeof(*new_var));
858 r = set_fb_var(fbi, new_var);
859 if (r < 0)
860 goto out;
861 }
862 }
863
864 if (fbdev->ctrl->sync)
865 fbdev->ctrl->sync();
866 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
867 if (r < 0) {
868 /* Revert changes. */
869 rg->size = old_size;
870 rg->type = old_type;
871 goto out;
872 }
873 rg->paddr = paddr;
874
875 if (old_size != size) {
876 if (size) {
877 memcpy(&fbi->var, new_var, sizeof(fbi->var));
878 set_fb_fix(fbi, 0);
879 } else {
880 /*
881 * Set these explicitly to indicate that the
882 * plane memory is dealloce'd, the other
883 * screen parameters in var / fix are invalid.
884 */
885 mutex_lock(&fbi->mm_lock);
886 fbi->fix.smem_start = 0;
887 fbi->fix.smem_len = 0;
888 mutex_unlock(&fbi->mm_lock);
889 }
890 }
891 }
892 out:
893 omapfb_rqueue_unlock(fbdev);
894
895 return r;
896 }
897
898 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
899 {
900 struct omapfb_plane_struct *plane = fbi->par;
901 struct omapfb_device *fbdev = plane->fbdev;
902 struct omapfb_mem_region *rg;
903
904 rg = &fbdev->mem_desc.region[plane->idx];
905 memset(mi, 0, sizeof(*mi));
906 mi->size = rg->size;
907 mi->type = rg->type;
908
909 return 0;
910 }
911
912 static int omapfb_set_color_key(struct omapfb_device *fbdev,
913 struct omapfb_color_key *ck)
914 {
915 int r;
916
917 if (!fbdev->ctrl->set_color_key)
918 return -ENODEV;
919
920 omapfb_rqueue_lock(fbdev);
921 r = fbdev->ctrl->set_color_key(ck);
922 omapfb_rqueue_unlock(fbdev);
923
924 return r;
925 }
926
927 static int omapfb_get_color_key(struct omapfb_device *fbdev,
928 struct omapfb_color_key *ck)
929 {
930 int r;
931
932 if (!fbdev->ctrl->get_color_key)
933 return -ENODEV;
934
935 omapfb_rqueue_lock(fbdev);
936 r = fbdev->ctrl->get_color_key(ck);
937 omapfb_rqueue_unlock(fbdev);
938
939 return r;
940 }
941
942 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
943 static int notifier_inited;
944
945 static void omapfb_init_notifier(void)
946 {
947 int i;
948
949 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
950 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
951 }
952
953 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
954 omapfb_notifier_callback_t callback,
955 void *callback_data)
956 {
957 int r;
958
959 if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
960 return -EINVAL;
961
962 if (!notifier_inited) {
963 omapfb_init_notifier();
964 notifier_inited = 1;
965 }
966
967 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
968 unsigned long, void *))callback;
969 omapfb_nb->data = callback_data;
970 r = blocking_notifier_chain_register(
971 &omapfb_client_list[omapfb_nb->plane_idx],
972 &omapfb_nb->nb);
973 if (r)
974 return r;
975 if (omapfb_dev != NULL &&
976 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
977 omapfb_dev->ctrl->bind_client(omapfb_nb);
978 }
979
980 return 0;
981 }
982 EXPORT_SYMBOL(omapfb_register_client);
983
984 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
985 {
986 return blocking_notifier_chain_unregister(
987 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
988 }
989 EXPORT_SYMBOL(omapfb_unregister_client);
990
991 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
992 {
993 int i;
994
995 if (!notifier_inited)
996 /* no client registered yet */
997 return;
998
999 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1000 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1001 fbdev->fb_info[i]);
1002 }
1003 EXPORT_SYMBOL(omapfb_notify_clients);
1004
1005 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1006 enum omapfb_update_mode mode)
1007 {
1008 int r;
1009
1010 omapfb_rqueue_lock(fbdev);
1011 r = fbdev->ctrl->set_update_mode(mode);
1012 omapfb_rqueue_unlock(fbdev);
1013
1014 return r;
1015 }
1016
1017 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1018 {
1019 int r;
1020
1021 omapfb_rqueue_lock(fbdev);
1022 r = fbdev->ctrl->get_update_mode();
1023 omapfb_rqueue_unlock(fbdev);
1024
1025 return r;
1026 }
1027
1028 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1029 struct omapfb_caps *caps)
1030 {
1031 memset(caps, 0, sizeof(*caps));
1032 fbdev->ctrl->get_caps(plane, caps);
1033 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1034 }
1035
1036 /* For lcd testing */
1037 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1038 {
1039 omapfb_rqueue_lock(fbdev);
1040 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1041 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1042 struct omapfb_update_window win;
1043
1044 memset(&win, 0, sizeof(win));
1045 win.width = 2;
1046 win.height = 2;
1047 win.out_width = 2;
1048 win.out_height = 2;
1049 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
1050 }
1051 omapfb_rqueue_unlock(fbdev);
1052 }
1053 EXPORT_SYMBOL(omapfb_write_first_pixel);
1054
1055 /*
1056 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1057 * here to be accessible by user mode code.
1058 */
1059 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1060 unsigned long arg)
1061 {
1062 struct omapfb_plane_struct *plane = fbi->par;
1063 struct omapfb_device *fbdev = plane->fbdev;
1064 struct fb_ops *ops = fbi->fbops;
1065 union {
1066 struct omapfb_update_window update_window;
1067 struct omapfb_plane_info plane_info;
1068 struct omapfb_mem_info mem_info;
1069 struct omapfb_color_key color_key;
1070 enum omapfb_update_mode update_mode;
1071 struct omapfb_caps caps;
1072 unsigned int mirror;
1073 int plane_out;
1074 int enable_plane;
1075 } p;
1076 int r = 0;
1077
1078 BUG_ON(!ops);
1079 switch (cmd) {
1080 case OMAPFB_MIRROR:
1081 if (get_user(p.mirror, (int __user *)arg))
1082 r = -EFAULT;
1083 else
1084 omapfb_mirror(fbi, p.mirror);
1085 break;
1086 case OMAPFB_SYNC_GFX:
1087 omapfb_sync(fbi);
1088 break;
1089 case OMAPFB_VSYNC:
1090 break;
1091 case OMAPFB_SET_UPDATE_MODE:
1092 if (get_user(p.update_mode, (int __user *)arg))
1093 r = -EFAULT;
1094 else
1095 r = omapfb_set_update_mode(fbdev, p.update_mode);
1096 break;
1097 case OMAPFB_GET_UPDATE_MODE:
1098 p.update_mode = omapfb_get_update_mode(fbdev);
1099 if (put_user(p.update_mode,
1100 (enum omapfb_update_mode __user *)arg))
1101 r = -EFAULT;
1102 break;
1103 case OMAPFB_UPDATE_WINDOW_OLD:
1104 if (copy_from_user(&p.update_window, (void __user *)arg,
1105 sizeof(struct omapfb_update_window_old)))
1106 r = -EFAULT;
1107 else {
1108 struct omapfb_update_window *u = &p.update_window;
1109 u->out_x = u->x;
1110 u->out_y = u->y;
1111 u->out_width = u->width;
1112 u->out_height = u->height;
1113 memset(u->reserved, 0, sizeof(u->reserved));
1114 r = omapfb_update_win(fbi, u);
1115 }
1116 break;
1117 case OMAPFB_UPDATE_WINDOW:
1118 if (copy_from_user(&p.update_window, (void __user *)arg,
1119 sizeof(p.update_window)))
1120 r = -EFAULT;
1121 else
1122 r = omapfb_update_win(fbi, &p.update_window);
1123 break;
1124 case OMAPFB_SETUP_PLANE:
1125 if (copy_from_user(&p.plane_info, (void __user *)arg,
1126 sizeof(p.plane_info)))
1127 r = -EFAULT;
1128 else
1129 r = omapfb_setup_plane(fbi, &p.plane_info);
1130 break;
1131 case OMAPFB_QUERY_PLANE:
1132 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1133 break;
1134 if (copy_to_user((void __user *)arg, &p.plane_info,
1135 sizeof(p.plane_info)))
1136 r = -EFAULT;
1137 break;
1138 case OMAPFB_SETUP_MEM:
1139 if (copy_from_user(&p.mem_info, (void __user *)arg,
1140 sizeof(p.mem_info)))
1141 r = -EFAULT;
1142 else
1143 r = omapfb_setup_mem(fbi, &p.mem_info);
1144 break;
1145 case OMAPFB_QUERY_MEM:
1146 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1147 break;
1148 if (copy_to_user((void __user *)arg, &p.mem_info,
1149 sizeof(p.mem_info)))
1150 r = -EFAULT;
1151 break;
1152 case OMAPFB_SET_COLOR_KEY:
1153 if (copy_from_user(&p.color_key, (void __user *)arg,
1154 sizeof(p.color_key)))
1155 r = -EFAULT;
1156 else
1157 r = omapfb_set_color_key(fbdev, &p.color_key);
1158 break;
1159 case OMAPFB_GET_COLOR_KEY:
1160 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1161 break;
1162 if (copy_to_user((void __user *)arg, &p.color_key,
1163 sizeof(p.color_key)))
1164 r = -EFAULT;
1165 break;
1166 case OMAPFB_GET_CAPS:
1167 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1168 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1169 r = -EFAULT;
1170 break;
1171 case OMAPFB_LCD_TEST:
1172 {
1173 int test_num;
1174
1175 if (get_user(test_num, (int __user *)arg)) {
1176 r = -EFAULT;
1177 break;
1178 }
1179 if (!fbdev->panel->run_test) {
1180 r = -EINVAL;
1181 break;
1182 }
1183 r = fbdev->panel->run_test(fbdev->panel, test_num);
1184 break;
1185 }
1186 case OMAPFB_CTRL_TEST:
1187 {
1188 int test_num;
1189
1190 if (get_user(test_num, (int __user *)arg)) {
1191 r = -EFAULT;
1192 break;
1193 }
1194 if (!fbdev->ctrl->run_test) {
1195 r = -EINVAL;
1196 break;
1197 }
1198 r = fbdev->ctrl->run_test(test_num);
1199 break;
1200 }
1201 default:
1202 r = -EINVAL;
1203 }
1204
1205 return r;
1206 }
1207
1208 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1209 {
1210 struct omapfb_plane_struct *plane = info->par;
1211 struct omapfb_device *fbdev = plane->fbdev;
1212 int r;
1213
1214 omapfb_rqueue_lock(fbdev);
1215 r = fbdev->ctrl->mmap(info, vma);
1216 omapfb_rqueue_unlock(fbdev);
1217
1218 return r;
1219 }
1220
1221 /*
1222 * Callback table for the frame buffer framework. Some of these pointers
1223 * will be changed according to the current setting of fb_info->accel_flags.
1224 */
1225 static struct fb_ops omapfb_ops = {
1226 .owner = THIS_MODULE,
1227 .fb_open = omapfb_open,
1228 .fb_release = omapfb_release,
1229 .fb_setcolreg = omapfb_setcolreg,
1230 .fb_setcmap = omapfb_setcmap,
1231 .fb_fillrect = cfb_fillrect,
1232 .fb_copyarea = cfb_copyarea,
1233 .fb_imageblit = cfb_imageblit,
1234 .fb_blank = omapfb_blank,
1235 .fb_ioctl = omapfb_ioctl,
1236 .fb_check_var = omapfb_check_var,
1237 .fb_set_par = omapfb_set_par,
1238 .fb_pan_display = omapfb_pan_display,
1239 };
1240
1241 /*
1242 * ---------------------------------------------------------------------------
1243 * Sysfs interface
1244 * ---------------------------------------------------------------------------
1245 */
1246 /* omapfbX sysfs entries */
1247 static ssize_t omapfb_show_caps_num(struct device *dev,
1248 struct device_attribute *attr, char *buf)
1249 {
1250 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1251 int plane;
1252 size_t size;
1253 struct omapfb_caps caps;
1254
1255 plane = 0;
1256 size = 0;
1257 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1258 omapfb_get_caps(fbdev, plane, &caps);
1259 size += snprintf(&buf[size], PAGE_SIZE - size,
1260 "plane#%d %#010x %#010x %#010x\n",
1261 plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1262 plane++;
1263 }
1264 return size;
1265 }
1266
1267 static ssize_t omapfb_show_caps_text(struct device *dev,
1268 struct device_attribute *attr, char *buf)
1269 {
1270 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1271 int i;
1272 struct omapfb_caps caps;
1273 int plane;
1274 size_t size;
1275
1276 plane = 0;
1277 size = 0;
1278 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1279 omapfb_get_caps(fbdev, plane, &caps);
1280 size += snprintf(&buf[size], PAGE_SIZE - size,
1281 "plane#%d:\n", plane);
1282 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1283 size < PAGE_SIZE; i++) {
1284 if (ctrl_caps[i].flag & caps.ctrl)
1285 size += snprintf(&buf[size], PAGE_SIZE - size,
1286 " %s\n", ctrl_caps[i].name);
1287 }
1288 size += snprintf(&buf[size], PAGE_SIZE - size,
1289 " plane colors:\n");
1290 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1291 size < PAGE_SIZE; i++) {
1292 if (color_caps[i].flag & caps.plane_color)
1293 size += snprintf(&buf[size], PAGE_SIZE - size,
1294 " %s\n", color_caps[i].name);
1295 }
1296 size += snprintf(&buf[size], PAGE_SIZE - size,
1297 " window colors:\n");
1298 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1299 size < PAGE_SIZE; i++) {
1300 if (color_caps[i].flag & caps.wnd_color)
1301 size += snprintf(&buf[size], PAGE_SIZE - size,
1302 " %s\n", color_caps[i].name);
1303 }
1304
1305 plane++;
1306 }
1307 return size;
1308 }
1309
1310 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1311 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1312
1313 /* panel sysfs entries */
1314 static ssize_t omapfb_show_panel_name(struct device *dev,
1315 struct device_attribute *attr, char *buf)
1316 {
1317 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1318
1319 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1320 }
1321
1322 static ssize_t omapfb_show_bklight_level(struct device *dev,
1323 struct device_attribute *attr,
1324 char *buf)
1325 {
1326 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1327 int r;
1328
1329 if (fbdev->panel->get_bklight_level) {
1330 r = snprintf(buf, PAGE_SIZE, "%d\n",
1331 fbdev->panel->get_bklight_level(fbdev->panel));
1332 } else
1333 r = -ENODEV;
1334 return r;
1335 }
1336
1337 static ssize_t omapfb_store_bklight_level(struct device *dev,
1338 struct device_attribute *attr,
1339 const char *buf, size_t size)
1340 {
1341 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1342 int r;
1343
1344 if (fbdev->panel->set_bklight_level) {
1345 unsigned int level;
1346
1347 if (sscanf(buf, "%10d", &level) == 1) {
1348 r = fbdev->panel->set_bklight_level(fbdev->panel,
1349 level);
1350 } else
1351 r = -EINVAL;
1352 } else
1353 r = -ENODEV;
1354 return r ? r : size;
1355 }
1356
1357 static ssize_t omapfb_show_bklight_max(struct device *dev,
1358 struct device_attribute *attr, char *buf)
1359 {
1360 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1361 int r;
1362
1363 if (fbdev->panel->get_bklight_level) {
1364 r = snprintf(buf, PAGE_SIZE, "%d\n",
1365 fbdev->panel->get_bklight_max(fbdev->panel));
1366 } else
1367 r = -ENODEV;
1368 return r;
1369 }
1370
1371 static struct device_attribute dev_attr_panel_name =
1372 __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1373 static DEVICE_ATTR(backlight_level, 0664,
1374 omapfb_show_bklight_level, omapfb_store_bklight_level);
1375 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1376
1377 static struct attribute *panel_attrs[] = {
1378 &dev_attr_panel_name.attr,
1379 &dev_attr_backlight_level.attr,
1380 &dev_attr_backlight_max.attr,
1381 NULL,
1382 };
1383
1384 static struct attribute_group panel_attr_grp = {
1385 .name = "panel",
1386 .attrs = panel_attrs,
1387 };
1388
1389 /* ctrl sysfs entries */
1390 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1391 struct device_attribute *attr, char *buf)
1392 {
1393 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1394
1395 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1396 }
1397
1398 static struct device_attribute dev_attr_ctrl_name =
1399 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1400
1401 static struct attribute *ctrl_attrs[] = {
1402 &dev_attr_ctrl_name.attr,
1403 NULL,
1404 };
1405
1406 static struct attribute_group ctrl_attr_grp = {
1407 .name = "ctrl",
1408 .attrs = ctrl_attrs,
1409 };
1410
1411 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1412 {
1413 int r;
1414
1415 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1416 goto fail0;
1417
1418 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1419 goto fail1;
1420
1421 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1422 goto fail2;
1423
1424 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1425 goto fail3;
1426
1427 return 0;
1428 fail3:
1429 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1430 fail2:
1431 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1432 fail1:
1433 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1434 fail0:
1435 dev_err(fbdev->dev, "unable to register sysfs interface\n");
1436 return r;
1437 }
1438
1439 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1440 {
1441 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1442 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1443 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1444 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1445 }
1446
1447 /*
1448 * ---------------------------------------------------------------------------
1449 * LDM callbacks
1450 * ---------------------------------------------------------------------------
1451 */
1452 /* Initialize system fb_info object and set the default video mode.
1453 * The frame buffer memory already allocated by lcddma_init
1454 */
1455 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1456 {
1457 struct fb_var_screeninfo *var = &info->var;
1458 struct fb_fix_screeninfo *fix = &info->fix;
1459 int r = 0;
1460
1461 info->fbops = &omapfb_ops;
1462 info->flags = FBINFO_FLAG_DEFAULT;
1463
1464 strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1465
1466 info->pseudo_palette = fbdev->pseudo_palette;
1467
1468 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0;
1469 var->xres = def_vxres;
1470 var->yres = def_vyres;
1471 var->xres_virtual = def_vxres;
1472 var->yres_virtual = def_vyres;
1473 var->rotate = def_rotate;
1474 var->bits_per_pixel = fbdev->panel->bpp;
1475
1476 set_fb_var(info, var);
1477 set_fb_fix(info, 1);
1478
1479 r = fb_alloc_cmap(&info->cmap, 16, 0);
1480 if (r != 0)
1481 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1482
1483 return r;
1484 }
1485
1486 /* Release the fb_info object */
1487 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1488 {
1489 fb_dealloc_cmap(&fbi->cmap);
1490 }
1491
1492 static void planes_cleanup(struct omapfb_device *fbdev)
1493 {
1494 int i;
1495
1496 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1497 if (fbdev->fb_info[i] == NULL)
1498 break;
1499 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1500 framebuffer_release(fbdev->fb_info[i]);
1501 }
1502 }
1503
1504 static int planes_init(struct omapfb_device *fbdev)
1505 {
1506 struct fb_info *fbi;
1507 int i;
1508 int r;
1509
1510 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1511 struct omapfb_plane_struct *plane;
1512 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1513 fbdev->dev);
1514 if (fbi == NULL) {
1515 dev_err(fbdev->dev,
1516 "unable to allocate memory for plane info\n");
1517 planes_cleanup(fbdev);
1518 return -ENOMEM;
1519 }
1520 plane = fbi->par;
1521 plane->idx = i;
1522 plane->fbdev = fbdev;
1523 plane->info.mirror = def_mirror;
1524 fbdev->fb_info[i] = fbi;
1525
1526 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1527 framebuffer_release(fbi);
1528 planes_cleanup(fbdev);
1529 return r;
1530 }
1531 plane->info.out_width = fbi->var.xres;
1532 plane->info.out_height = fbi->var.yres;
1533 }
1534 return 0;
1535 }
1536
1537 /*
1538 * Free driver resources. Can be called to rollback an aborted initialization
1539 * sequence.
1540 */
1541 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1542 {
1543 int i;
1544
1545 switch (state) {
1546 case OMAPFB_ACTIVE:
1547 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1548 unregister_framebuffer(fbdev->fb_info[i]);
1549 case 7:
1550 omapfb_unregister_sysfs(fbdev);
1551 case 6:
1552 fbdev->panel->disable(fbdev->panel);
1553 case 5:
1554 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1555 case 4:
1556 planes_cleanup(fbdev);
1557 case 3:
1558 ctrl_cleanup(fbdev);
1559 case 2:
1560 fbdev->panel->cleanup(fbdev->panel);
1561 case 1:
1562 dev_set_drvdata(fbdev->dev, NULL);
1563 kfree(fbdev);
1564 case 0:
1565 /* nothing to free */
1566 break;
1567 default:
1568 BUG();
1569 }
1570 }
1571
1572 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1573 {
1574 struct omapfb_platform_data *conf;
1575 char name[17];
1576 int i;
1577
1578 conf = dev_get_platdata(fbdev->dev);
1579
1580 fbdev->ctrl = NULL;
1581
1582 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1583 name[sizeof(name) - 1] = '\0';
1584
1585 if (strcmp(name, "internal") == 0) {
1586 fbdev->ctrl = fbdev->int_ctrl;
1587 return 0;
1588 }
1589
1590 for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1591 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1592 if (strcmp(ctrls[i]->name, name) == 0) {
1593 fbdev->ctrl = ctrls[i];
1594 break;
1595 }
1596 }
1597
1598 if (fbdev->ctrl == NULL) {
1599 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1600 return -1;
1601 }
1602
1603 return 0;
1604 }
1605
1606 static void check_required_callbacks(struct omapfb_device *fbdev)
1607 {
1608 #define _C(x) (fbdev->ctrl->x != NULL)
1609 #define _P(x) (fbdev->panel->x != NULL)
1610 BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1611 BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1612 _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1613 _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1614 _P(get_caps)));
1615 #undef _P
1616 #undef _C
1617 }
1618
1619 /*
1620 * Called by LDM binding to probe and attach a new device.
1621 * Initialization sequence:
1622 * 1. allocate system omapfb_device structure
1623 * 2. select controller type according to platform configuration
1624 * init LCD panel
1625 * 3. init LCD controller and LCD DMA
1626 * 4. init system fb_info structure for all planes
1627 * 5. setup video mode for first plane and enable it
1628 * 6. enable LCD panel
1629 * 7. register sysfs attributes
1630 * OMAPFB_ACTIVE: register system fb_info structure for all planes
1631 */
1632 static int omapfb_do_probe(struct platform_device *pdev,
1633 struct lcd_panel *panel)
1634 {
1635 struct omapfb_device *fbdev = NULL;
1636 int init_state;
1637 unsigned long phz, hhz, vhz;
1638 unsigned long vram;
1639 int i;
1640 int r = 0;
1641
1642 init_state = 0;
1643
1644 if (pdev->num_resources != 0) {
1645 dev_err(&pdev->dev, "probed for an unknown device\n");
1646 r = -ENODEV;
1647 goto cleanup;
1648 }
1649
1650 if (dev_get_platdata(&pdev->dev) == NULL) {
1651 dev_err(&pdev->dev, "missing platform data\n");
1652 r = -ENOENT;
1653 goto cleanup;
1654 }
1655
1656 fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1657 if (fbdev == NULL) {
1658 dev_err(&pdev->dev,
1659 "unable to allocate memory for device info\n");
1660 r = -ENOMEM;
1661 goto cleanup;
1662 }
1663 init_state++;
1664
1665 fbdev->dev = &pdev->dev;
1666 fbdev->panel = panel;
1667 fbdev->dssdev = &omapdss_device;
1668 platform_set_drvdata(pdev, fbdev);
1669
1670 mutex_init(&fbdev->rqueue_mutex);
1671
1672 fbdev->int_ctrl = &omap1_int_ctrl;
1673 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1674 fbdev->ext_if = &omap1_ext_if;
1675 #endif
1676 if (omapfb_find_ctrl(fbdev) < 0) {
1677 dev_err(fbdev->dev,
1678 "LCD controller not found, board not supported\n");
1679 r = -ENODEV;
1680 goto cleanup;
1681 }
1682
1683 r = fbdev->panel->init(fbdev->panel, fbdev);
1684 if (r)
1685 goto cleanup;
1686
1687 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1688
1689 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1690 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1691
1692 init_state++;
1693
1694 r = ctrl_init(fbdev);
1695 if (r)
1696 goto cleanup;
1697 if (fbdev->ctrl->mmap != NULL)
1698 omapfb_ops.fb_mmap = omapfb_mmap;
1699 init_state++;
1700
1701 check_required_callbacks(fbdev);
1702
1703 r = planes_init(fbdev);
1704 if (r)
1705 goto cleanup;
1706 init_state++;
1707
1708 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1709 /* Set DMA priority for EMIFF access to highest */
1710 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1711 #endif
1712
1713 r = ctrl_change_mode(fbdev->fb_info[0]);
1714 if (r) {
1715 dev_err(fbdev->dev, "mode setting failed\n");
1716 goto cleanup;
1717 }
1718
1719 /* GFX plane is enabled by default */
1720 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1721 if (r)
1722 goto cleanup;
1723
1724 omapfb_set_update_mode(fbdev, manual_update ?
1725 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1726 init_state++;
1727
1728 r = fbdev->panel->enable(fbdev->panel);
1729 if (r)
1730 goto cleanup;
1731 init_state++;
1732
1733 r = omapfb_register_sysfs(fbdev);
1734 if (r)
1735 goto cleanup;
1736 init_state++;
1737
1738 vram = 0;
1739 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1740 r = register_framebuffer(fbdev->fb_info[i]);
1741 if (r != 0) {
1742 dev_err(fbdev->dev,
1743 "registering framebuffer %d failed\n", i);
1744 goto cleanup;
1745 }
1746 vram += fbdev->mem_desc.region[i].size;
1747 }
1748
1749 fbdev->state = OMAPFB_ACTIVE;
1750
1751 panel = fbdev->panel;
1752 phz = panel->pixel_clock * 1000;
1753 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1754 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1755
1756 omapfb_dev = fbdev;
1757
1758 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1759 vram, fbdev->mem_desc.region_cnt);
1760 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1761 "vfreq %lu.%lu Hz\n",
1762 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1763
1764 return 0;
1765
1766 cleanup:
1767 omapfb_free_resources(fbdev, init_state);
1768
1769 return r;
1770 }
1771
1772 static int omapfb_probe(struct platform_device *pdev)
1773 {
1774 int r;
1775
1776 BUG_ON(fbdev_pdev != NULL);
1777
1778 r = platform_device_register(&omapdss_device);
1779 if (r) {
1780 dev_err(&pdev->dev, "can't register omapdss device\n");
1781 return r;
1782 }
1783
1784 /* Delay actual initialization until the LCD is registered */
1785 fbdev_pdev = pdev;
1786 if (fbdev_panel != NULL)
1787 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1788 return 0;
1789 }
1790
1791 void omapfb_register_panel(struct lcd_panel *panel)
1792 {
1793 BUG_ON(fbdev_panel != NULL);
1794
1795 fbdev_panel = panel;
1796 if (fbdev_pdev != NULL)
1797 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1798 }
1799 EXPORT_SYMBOL_GPL(omapfb_register_panel);
1800
1801 /* Called when the device is being detached from the driver */
1802 static int omapfb_remove(struct platform_device *pdev)
1803 {
1804 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1805 enum omapfb_state saved_state = fbdev->state;
1806
1807 /* FIXME: wait till completion of pending events */
1808
1809 fbdev->state = OMAPFB_DISABLED;
1810 omapfb_free_resources(fbdev, saved_state);
1811
1812 platform_device_unregister(&omapdss_device);
1813 fbdev->dssdev = NULL;
1814
1815 return 0;
1816 }
1817
1818 /* PM suspend */
1819 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1820 {
1821 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1822
1823 if (fbdev != NULL)
1824 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1825 return 0;
1826 }
1827
1828 /* PM resume */
1829 static int omapfb_resume(struct platform_device *pdev)
1830 {
1831 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1832
1833 if (fbdev != NULL)
1834 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1835 return 0;
1836 }
1837
1838 static struct platform_driver omapfb_driver = {
1839 .probe = omapfb_probe,
1840 .remove = omapfb_remove,
1841 .suspend = omapfb_suspend,
1842 .resume = omapfb_resume,
1843 .driver = {
1844 .name = MODULE_NAME,
1845 },
1846 };
1847
1848 #ifndef MODULE
1849
1850 /* Process kernel command line parameters */
1851 static int __init omapfb_setup(char *options)
1852 {
1853 char *this_opt = NULL;
1854 int r = 0;
1855
1856 pr_debug("omapfb: options %s\n", options);
1857
1858 if (!options || !*options)
1859 return 0;
1860
1861 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1862 if (!strncmp(this_opt, "accel", 5))
1863 def_accel = 1;
1864 else if (!strncmp(this_opt, "vram:", 5)) {
1865 char *suffix;
1866 unsigned long vram;
1867 vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1868 switch (suffix[0]) {
1869 case '\0':
1870 break;
1871 case 'm':
1872 case 'M':
1873 vram *= 1024;
1874 /* Fall through */
1875 case 'k':
1876 case 'K':
1877 vram *= 1024;
1878 break;
1879 default:
1880 pr_debug("omapfb: invalid vram suffix %c\n",
1881 suffix[0]);
1882 r = -1;
1883 }
1884 def_vram[def_vram_cnt++] = vram;
1885 }
1886 else if (!strncmp(this_opt, "vxres:", 6))
1887 def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1888 else if (!strncmp(this_opt, "vyres:", 6))
1889 def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1890 else if (!strncmp(this_opt, "rotate:", 7))
1891 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1892 else if (!strncmp(this_opt, "mirror:", 7))
1893 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1894 else if (!strncmp(this_opt, "manual_update", 13))
1895 manual_update = 1;
1896 else {
1897 pr_debug("omapfb: invalid option\n");
1898 r = -1;
1899 }
1900 }
1901
1902 return r;
1903 }
1904
1905 #endif
1906
1907 /* Register both the driver and the device */
1908 static int __init omapfb_init(void)
1909 {
1910 #ifndef MODULE
1911 char *option;
1912
1913 if (fb_get_options("omapfb", &option))
1914 return -ENODEV;
1915 omapfb_setup(option);
1916 #endif
1917 /* Register the driver with LDM */
1918 if (platform_driver_register(&omapfb_driver)) {
1919 pr_debug("failed to register omapfb driver\n");
1920 return -ENODEV;
1921 }
1922
1923 return 0;
1924 }
1925
1926 static void __exit omapfb_cleanup(void)
1927 {
1928 platform_driver_unregister(&omapfb_driver);
1929 }
1930
1931 module_param_named(accel, def_accel, uint, 0664);
1932 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1933 module_param_named(vxres, def_vxres, long, 0664);
1934 module_param_named(vyres, def_vyres, long, 0664);
1935 module_param_named(rotate, def_rotate, uint, 0664);
1936 module_param_named(mirror, def_mirror, uint, 0664);
1937 module_param_named(manual_update, manual_update, bool, 0664);
1938
1939 module_init(omapfb_init);
1940 module_exit(omapfb_cleanup);
1941
1942 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1943 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1944 MODULE_LICENSE("GPL");
Linux with added FPC-III support