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of: MSI: Simplify irqdomain lookup
[linux/fpc-iii.git] / drivers / video / fbdev / omap / omapfb_main.c
blob393ae1bc07e8f76a4501e8b17c67cff26341445b
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 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
598 static void omapfb_rotate(struct fb_info *fbi, int rotate)
599 {
600 struct omapfb_plane_struct *plane = fbi->par;
601 struct omapfb_device *fbdev = plane->fbdev;
602
603 omapfb_rqueue_lock(fbdev);
604 if (rotate != fbi->var.rotate) {
605 struct fb_var_screeninfo *new_var = &fbdev->new_var;
606
607 memcpy(new_var, &fbi->var, sizeof(*new_var));
608 new_var->rotate = rotate;
609 if (set_fb_var(fbi, new_var) == 0 &&
610 memcmp(new_var, &fbi->var, sizeof(*new_var))) {
611 memcpy(&fbi->var, new_var, sizeof(*new_var));
612 ctrl_change_mode(fbi);
613 }
614 }
615 omapfb_rqueue_unlock(fbdev);
616 }
617
618 /*
619 * Set new x,y offsets in the virtual display for the visible area and switch
620 * to the new mode.
621 */
622 static int omapfb_pan_display(struct fb_var_screeninfo *var,
623 struct fb_info *fbi)
624 {
625 struct omapfb_plane_struct *plane = fbi->par;
626 struct omapfb_device *fbdev = plane->fbdev;
627 int r = 0;
628
629 omapfb_rqueue_lock(fbdev);
630 if (var->xoffset != fbi->var.xoffset ||
631 var->yoffset != fbi->var.yoffset) {
632 struct fb_var_screeninfo *new_var = &fbdev->new_var;
633
634 memcpy(new_var, &fbi->var, sizeof(*new_var));
635 new_var->xoffset = var->xoffset;
636 new_var->yoffset = var->yoffset;
637 if (set_fb_var(fbi, new_var))
638 r = -EINVAL;
639 else {
640 memcpy(&fbi->var, new_var, sizeof(*new_var));
641 ctrl_change_mode(fbi);
642 }
643 }
644 omapfb_rqueue_unlock(fbdev);
645
646 return r;
647 }
648
649 /* Set mirror to vertical axis and switch to the new mode. */
650 static int omapfb_mirror(struct fb_info *fbi, int mirror)
651 {
652 struct omapfb_plane_struct *plane = fbi->par;
653 struct omapfb_device *fbdev = plane->fbdev;
654 int r = 0;
655
656 omapfb_rqueue_lock(fbdev);
657 mirror = mirror ? 1 : 0;
658 if (cpu_is_omap15xx())
659 r = -EINVAL;
660 else if (mirror != plane->info.mirror) {
661 plane->info.mirror = mirror;
662 r = ctrl_change_mode(fbi);
663 }
664 omapfb_rqueue_unlock(fbdev);
665
666 return r;
667 }
668
669 /*
670 * Check values in var, try to adjust them in case of out of bound values if
671 * possible, or return error.
672 */
673 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
674 {
675 struct omapfb_plane_struct *plane = fbi->par;
676 struct omapfb_device *fbdev = plane->fbdev;
677 int r;
678
679 omapfb_rqueue_lock(fbdev);
680 if (fbdev->ctrl->sync != NULL)
681 fbdev->ctrl->sync();
682 r = set_fb_var(fbi, var);
683 omapfb_rqueue_unlock(fbdev);
684
685 return r;
686 }
687
688 /*
689 * Switch to a new mode. The parameters for it has been check already by
690 * omapfb_check_var.
691 */
692 static int omapfb_set_par(struct fb_info *fbi)
693 {
694 struct omapfb_plane_struct *plane = fbi->par;
695 struct omapfb_device *fbdev = plane->fbdev;
696 int r = 0;
697
698 omapfb_rqueue_lock(fbdev);
699 set_fb_fix(fbi, 0);
700 r = ctrl_change_mode(fbi);
701 omapfb_rqueue_unlock(fbdev);
702
703 return r;
704 }
705
706 int omapfb_update_window_async(struct fb_info *fbi,
707 struct omapfb_update_window *win,
708 void (*callback)(void *),
709 void *callback_data)
710 {
711 int xres, yres;
712 struct omapfb_plane_struct *plane = fbi->par;
713 struct omapfb_device *fbdev = plane->fbdev;
714 struct fb_var_screeninfo *var = &fbi->var;
715
716 switch (var->rotate) {
717 case 0:
718 case 180:
719 xres = fbdev->panel->x_res;
720 yres = fbdev->panel->y_res;
721 break;
722 case 90:
723 case 270:
724 xres = fbdev->panel->y_res;
725 yres = fbdev->panel->x_res;
726 break;
727 default:
728 return -EINVAL;
729 }
730
731 if (win->x >= xres || win->y >= yres ||
732 win->out_x > xres || win->out_y > yres)
733 return -EINVAL;
734
735 if (!fbdev->ctrl->update_window ||
736 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
737 return -ENODEV;
738
739 if (win->x + win->width > xres)
740 win->width = xres - win->x;
741 if (win->y + win->height > yres)
742 win->height = yres - win->y;
743 if (win->out_x + win->out_width > xres)
744 win->out_width = xres - win->out_x;
745 if (win->out_y + win->out_height > yres)
746 win->out_height = yres - win->out_y;
747 if (!win->width || !win->height || !win->out_width || !win->out_height)
748 return 0;
749
750 return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
751 }
752 EXPORT_SYMBOL(omapfb_update_window_async);
753
754 static int omapfb_update_win(struct fb_info *fbi,
755 struct omapfb_update_window *win)
756 {
757 struct omapfb_plane_struct *plane = fbi->par;
758 int ret;
759
760 omapfb_rqueue_lock(plane->fbdev);
761 ret = omapfb_update_window_async(fbi, win, NULL, NULL);
762 omapfb_rqueue_unlock(plane->fbdev);
763
764 return ret;
765 }
766
767 static int omapfb_update_full_screen(struct fb_info *fbi)
768 {
769 struct omapfb_plane_struct *plane = fbi->par;
770 struct omapfb_device *fbdev = plane->fbdev;
771 struct omapfb_update_window win;
772 int r;
773
774 if (!fbdev->ctrl->update_window ||
775 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
776 return -ENODEV;
777
778 win.x = 0;
779 win.y = 0;
780 win.width = fbi->var.xres;
781 win.height = fbi->var.yres;
782 win.out_x = 0;
783 win.out_y = 0;
784 win.out_width = fbi->var.xres;
785 win.out_height = fbi->var.yres;
786 win.format = 0;
787
788 omapfb_rqueue_lock(fbdev);
789 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
790 omapfb_rqueue_unlock(fbdev);
791
792 return r;
793 }
794
795 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
796 {
797 struct omapfb_plane_struct *plane = fbi->par;
798 struct omapfb_device *fbdev = plane->fbdev;
799 struct lcd_panel *panel = fbdev->panel;
800 struct omapfb_plane_info old_info;
801 int r = 0;
802
803 if (pi->pos_x + pi->out_width > panel->x_res ||
804 pi->pos_y + pi->out_height > panel->y_res)
805 return -EINVAL;
806
807 omapfb_rqueue_lock(fbdev);
808 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
809 /*
810 * This plane's memory was freed, can't enable it
811 * until it's reallocated.
812 */
813 r = -EINVAL;
814 goto out;
815 }
816 old_info = plane->info;
817 plane->info = *pi;
818 if (pi->enabled) {
819 r = ctrl_change_mode(fbi);
820 if (r < 0) {
821 plane->info = old_info;
822 goto out;
823 }
824 }
825 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
826 if (r < 0) {
827 plane->info = old_info;
828 goto out;
829 }
830 out:
831 omapfb_rqueue_unlock(fbdev);
832 return r;
833 }
834
835 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
836 {
837 struct omapfb_plane_struct *plane = fbi->par;
838
839 *pi = plane->info;
840 return 0;
841 }
842
843 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
844 {
845 struct omapfb_plane_struct *plane = fbi->par;
846 struct omapfb_device *fbdev = plane->fbdev;
847 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
848 size_t size;
849 int r = 0;
850
851 if (fbdev->ctrl->setup_mem == NULL)
852 return -ENODEV;
853 if (mi->type != OMAPFB_MEMTYPE_SDRAM)
854 return -EINVAL;
855
856 size = PAGE_ALIGN(mi->size);
857 omapfb_rqueue_lock(fbdev);
858 if (plane->info.enabled) {
859 r = -EBUSY;
860 goto out;
861 }
862 if (rg->size != size || rg->type != mi->type) {
863 struct fb_var_screeninfo *new_var = &fbdev->new_var;
864 unsigned long old_size = rg->size;
865 u8 old_type = rg->type;
866 unsigned long paddr;
867
868 rg->size = size;
869 rg->type = mi->type;
870 /*
871 * size == 0 is a special case, for which we
872 * don't check / adjust the screen parameters.
873 * This isn't a problem since the plane can't
874 * be reenabled unless its size is > 0.
875 */
876 if (old_size != size && size) {
877 if (size) {
878 memcpy(new_var, &fbi->var, sizeof(*new_var));
879 r = set_fb_var(fbi, new_var);
880 if (r < 0)
881 goto out;
882 }
883 }
884
885 if (fbdev->ctrl->sync)
886 fbdev->ctrl->sync();
887 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
888 if (r < 0) {
889 /* Revert changes. */
890 rg->size = old_size;
891 rg->type = old_type;
892 goto out;
893 }
894 rg->paddr = paddr;
895
896 if (old_size != size) {
897 if (size) {
898 memcpy(&fbi->var, new_var, sizeof(fbi->var));
899 set_fb_fix(fbi, 0);
900 } else {
901 /*
902 * Set these explicitly to indicate that the
903 * plane memory is dealloce'd, the other
904 * screen parameters in var / fix are invalid.
905 */
906 mutex_lock(&fbi->mm_lock);
907 fbi->fix.smem_start = 0;
908 fbi->fix.smem_len = 0;
909 mutex_unlock(&fbi->mm_lock);
910 }
911 }
912 }
913 out:
914 omapfb_rqueue_unlock(fbdev);
915
916 return r;
917 }
918
919 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
920 {
921 struct omapfb_plane_struct *plane = fbi->par;
922 struct omapfb_device *fbdev = plane->fbdev;
923 struct omapfb_mem_region *rg;
924
925 rg = &fbdev->mem_desc.region[plane->idx];
926 memset(mi, 0, sizeof(*mi));
927 mi->size = rg->size;
928 mi->type = rg->type;
929
930 return 0;
931 }
932
933 static int omapfb_set_color_key(struct omapfb_device *fbdev,
934 struct omapfb_color_key *ck)
935 {
936 int r;
937
938 if (!fbdev->ctrl->set_color_key)
939 return -ENODEV;
940
941 omapfb_rqueue_lock(fbdev);
942 r = fbdev->ctrl->set_color_key(ck);
943 omapfb_rqueue_unlock(fbdev);
944
945 return r;
946 }
947
948 static int omapfb_get_color_key(struct omapfb_device *fbdev,
949 struct omapfb_color_key *ck)
950 {
951 int r;
952
953 if (!fbdev->ctrl->get_color_key)
954 return -ENODEV;
955
956 omapfb_rqueue_lock(fbdev);
957 r = fbdev->ctrl->get_color_key(ck);
958 omapfb_rqueue_unlock(fbdev);
959
960 return r;
961 }
962
963 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
964 static int notifier_inited;
965
966 static void omapfb_init_notifier(void)
967 {
968 int i;
969
970 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
971 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
972 }
973
974 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
975 omapfb_notifier_callback_t callback,
976 void *callback_data)
977 {
978 int r;
979
980 if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
981 return -EINVAL;
982
983 if (!notifier_inited) {
984 omapfb_init_notifier();
985 notifier_inited = 1;
986 }
987
988 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
989 unsigned long, void *))callback;
990 omapfb_nb->data = callback_data;
991 r = blocking_notifier_chain_register(
992 &omapfb_client_list[omapfb_nb->plane_idx],
993 &omapfb_nb->nb);
994 if (r)
995 return r;
996 if (omapfb_dev != NULL &&
997 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
998 omapfb_dev->ctrl->bind_client(omapfb_nb);
999 }
1000
1001 return 0;
1002 }
1003 EXPORT_SYMBOL(omapfb_register_client);
1004
1005 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
1006 {
1007 return blocking_notifier_chain_unregister(
1008 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
1009 }
1010 EXPORT_SYMBOL(omapfb_unregister_client);
1011
1012 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
1013 {
1014 int i;
1015
1016 if (!notifier_inited)
1017 /* no client registered yet */
1018 return;
1019
1020 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1021 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1022 fbdev->fb_info[i]);
1023 }
1024 EXPORT_SYMBOL(omapfb_notify_clients);
1025
1026 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1027 enum omapfb_update_mode mode)
1028 {
1029 int r;
1030
1031 omapfb_rqueue_lock(fbdev);
1032 r = fbdev->ctrl->set_update_mode(mode);
1033 omapfb_rqueue_unlock(fbdev);
1034
1035 return r;
1036 }
1037
1038 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1039 {
1040 int r;
1041
1042 omapfb_rqueue_lock(fbdev);
1043 r = fbdev->ctrl->get_update_mode();
1044 omapfb_rqueue_unlock(fbdev);
1045
1046 return r;
1047 }
1048
1049 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1050 struct omapfb_caps *caps)
1051 {
1052 memset(caps, 0, sizeof(*caps));
1053 fbdev->ctrl->get_caps(plane, caps);
1054 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1055 }
1056
1057 /* For lcd testing */
1058 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1059 {
1060 omapfb_rqueue_lock(fbdev);
1061 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1062 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1063 struct omapfb_update_window win;
1064
1065 memset(&win, 0, sizeof(win));
1066 win.width = 2;
1067 win.height = 2;
1068 win.out_width = 2;
1069 win.out_height = 2;
1070 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
1071 }
1072 omapfb_rqueue_unlock(fbdev);
1073 }
1074 EXPORT_SYMBOL(omapfb_write_first_pixel);
1075
1076 /*
1077 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1078 * here to be accessible by user mode code.
1079 */
1080 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1081 unsigned long arg)
1082 {
1083 struct omapfb_plane_struct *plane = fbi->par;
1084 struct omapfb_device *fbdev = plane->fbdev;
1085 struct fb_ops *ops = fbi->fbops;
1086 union {
1087 struct omapfb_update_window update_window;
1088 struct omapfb_plane_info plane_info;
1089 struct omapfb_mem_info mem_info;
1090 struct omapfb_color_key color_key;
1091 enum omapfb_update_mode update_mode;
1092 struct omapfb_caps caps;
1093 unsigned int mirror;
1094 int plane_out;
1095 int enable_plane;
1096 } p;
1097 int r = 0;
1098
1099 BUG_ON(!ops);
1100 switch (cmd) {
1101 case OMAPFB_MIRROR:
1102 if (get_user(p.mirror, (int __user *)arg))
1103 r = -EFAULT;
1104 else
1105 omapfb_mirror(fbi, p.mirror);
1106 break;
1107 case OMAPFB_SYNC_GFX:
1108 omapfb_sync(fbi);
1109 break;
1110 case OMAPFB_VSYNC:
1111 break;
1112 case OMAPFB_SET_UPDATE_MODE:
1113 if (get_user(p.update_mode, (int __user *)arg))
1114 r = -EFAULT;
1115 else
1116 r = omapfb_set_update_mode(fbdev, p.update_mode);
1117 break;
1118 case OMAPFB_GET_UPDATE_MODE:
1119 p.update_mode = omapfb_get_update_mode(fbdev);
1120 if (put_user(p.update_mode,
1121 (enum omapfb_update_mode __user *)arg))
1122 r = -EFAULT;
1123 break;
1124 case OMAPFB_UPDATE_WINDOW_OLD:
1125 if (copy_from_user(&p.update_window, (void __user *)arg,
1126 sizeof(struct omapfb_update_window_old)))
1127 r = -EFAULT;
1128 else {
1129 struct omapfb_update_window *u = &p.update_window;
1130 u->out_x = u->x;
1131 u->out_y = u->y;
1132 u->out_width = u->width;
1133 u->out_height = u->height;
1134 memset(u->reserved, 0, sizeof(u->reserved));
1135 r = omapfb_update_win(fbi, u);
1136 }
1137 break;
1138 case OMAPFB_UPDATE_WINDOW:
1139 if (copy_from_user(&p.update_window, (void __user *)arg,
1140 sizeof(p.update_window)))
1141 r = -EFAULT;
1142 else
1143 r = omapfb_update_win(fbi, &p.update_window);
1144 break;
1145 case OMAPFB_SETUP_PLANE:
1146 if (copy_from_user(&p.plane_info, (void __user *)arg,
1147 sizeof(p.plane_info)))
1148 r = -EFAULT;
1149 else
1150 r = omapfb_setup_plane(fbi, &p.plane_info);
1151 break;
1152 case OMAPFB_QUERY_PLANE:
1153 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1154 break;
1155 if (copy_to_user((void __user *)arg, &p.plane_info,
1156 sizeof(p.plane_info)))
1157 r = -EFAULT;
1158 break;
1159 case OMAPFB_SETUP_MEM:
1160 if (copy_from_user(&p.mem_info, (void __user *)arg,
1161 sizeof(p.mem_info)))
1162 r = -EFAULT;
1163 else
1164 r = omapfb_setup_mem(fbi, &p.mem_info);
1165 break;
1166 case OMAPFB_QUERY_MEM:
1167 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1168 break;
1169 if (copy_to_user((void __user *)arg, &p.mem_info,
1170 sizeof(p.mem_info)))
1171 r = -EFAULT;
1172 break;
1173 case OMAPFB_SET_COLOR_KEY:
1174 if (copy_from_user(&p.color_key, (void __user *)arg,
1175 sizeof(p.color_key)))
1176 r = -EFAULT;
1177 else
1178 r = omapfb_set_color_key(fbdev, &p.color_key);
1179 break;
1180 case OMAPFB_GET_COLOR_KEY:
1181 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1182 break;
1183 if (copy_to_user((void __user *)arg, &p.color_key,
1184 sizeof(p.color_key)))
1185 r = -EFAULT;
1186 break;
1187 case OMAPFB_GET_CAPS:
1188 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1189 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1190 r = -EFAULT;
1191 break;
1192 case OMAPFB_LCD_TEST:
1193 {
1194 int test_num;
1195
1196 if (get_user(test_num, (int __user *)arg)) {
1197 r = -EFAULT;
1198 break;
1199 }
1200 if (!fbdev->panel->run_test) {
1201 r = -EINVAL;
1202 break;
1203 }
1204 r = fbdev->panel->run_test(fbdev->panel, test_num);
1205 break;
1206 }
1207 case OMAPFB_CTRL_TEST:
1208 {
1209 int test_num;
1210
1211 if (get_user(test_num, (int __user *)arg)) {
1212 r = -EFAULT;
1213 break;
1214 }
1215 if (!fbdev->ctrl->run_test) {
1216 r = -EINVAL;
1217 break;
1218 }
1219 r = fbdev->ctrl->run_test(test_num);
1220 break;
1221 }
1222 default:
1223 r = -EINVAL;
1224 }
1225
1226 return r;
1227 }
1228
1229 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1230 {
1231 struct omapfb_plane_struct *plane = info->par;
1232 struct omapfb_device *fbdev = plane->fbdev;
1233 int r;
1234
1235 omapfb_rqueue_lock(fbdev);
1236 r = fbdev->ctrl->mmap(info, vma);
1237 omapfb_rqueue_unlock(fbdev);
1238
1239 return r;
1240 }
1241
1242 /*
1243 * Callback table for the frame buffer framework. Some of these pointers
1244 * will be changed according to the current setting of fb_info->accel_flags.
1245 */
1246 static struct fb_ops omapfb_ops = {
1247 .owner = THIS_MODULE,
1248 .fb_open = omapfb_open,
1249 .fb_release = omapfb_release,
1250 .fb_setcolreg = omapfb_setcolreg,
1251 .fb_setcmap = omapfb_setcmap,
1252 .fb_fillrect = cfb_fillrect,
1253 .fb_copyarea = cfb_copyarea,
1254 .fb_imageblit = cfb_imageblit,
1255 .fb_blank = omapfb_blank,
1256 .fb_ioctl = omapfb_ioctl,
1257 .fb_check_var = omapfb_check_var,
1258 .fb_set_par = omapfb_set_par,
1259 .fb_rotate = omapfb_rotate,
1260 .fb_pan_display = omapfb_pan_display,
1261 };
1262
1263 /*
1264 * ---------------------------------------------------------------------------
1265 * Sysfs interface
1266 * ---------------------------------------------------------------------------
1267 */
1268 /* omapfbX sysfs entries */
1269 static ssize_t omapfb_show_caps_num(struct device *dev,
1270 struct device_attribute *attr, char *buf)
1271 {
1272 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1273 int plane;
1274 size_t size;
1275 struct omapfb_caps caps;
1276
1277 plane = 0;
1278 size = 0;
1279 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1280 omapfb_get_caps(fbdev, plane, &caps);
1281 size += snprintf(&buf[size], PAGE_SIZE - size,
1282 "plane#%d %#010x %#010x %#010x\n",
1283 plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1284 plane++;
1285 }
1286 return size;
1287 }
1288
1289 static ssize_t omapfb_show_caps_text(struct device *dev,
1290 struct device_attribute *attr, char *buf)
1291 {
1292 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1293 int i;
1294 struct omapfb_caps caps;
1295 int plane;
1296 size_t size;
1297
1298 plane = 0;
1299 size = 0;
1300 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1301 omapfb_get_caps(fbdev, plane, &caps);
1302 size += snprintf(&buf[size], PAGE_SIZE - size,
1303 "plane#%d:\n", plane);
1304 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1305 size < PAGE_SIZE; i++) {
1306 if (ctrl_caps[i].flag & caps.ctrl)
1307 size += snprintf(&buf[size], PAGE_SIZE - size,
1308 " %s\n", ctrl_caps[i].name);
1309 }
1310 size += snprintf(&buf[size], PAGE_SIZE - size,
1311 " plane colors:\n");
1312 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1313 size < PAGE_SIZE; i++) {
1314 if (color_caps[i].flag & caps.plane_color)
1315 size += snprintf(&buf[size], PAGE_SIZE - size,
1316 " %s\n", color_caps[i].name);
1317 }
1318 size += snprintf(&buf[size], PAGE_SIZE - size,
1319 " window colors:\n");
1320 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1321 size < PAGE_SIZE; i++) {
1322 if (color_caps[i].flag & caps.wnd_color)
1323 size += snprintf(&buf[size], PAGE_SIZE - size,
1324 " %s\n", color_caps[i].name);
1325 }
1326
1327 plane++;
1328 }
1329 return size;
1330 }
1331
1332 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1333 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1334
1335 /* panel sysfs entries */
1336 static ssize_t omapfb_show_panel_name(struct device *dev,
1337 struct device_attribute *attr, char *buf)
1338 {
1339 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1340
1341 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1342 }
1343
1344 static ssize_t omapfb_show_bklight_level(struct device *dev,
1345 struct device_attribute *attr,
1346 char *buf)
1347 {
1348 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1349 int r;
1350
1351 if (fbdev->panel->get_bklight_level) {
1352 r = snprintf(buf, PAGE_SIZE, "%d\n",
1353 fbdev->panel->get_bklight_level(fbdev->panel));
1354 } else
1355 r = -ENODEV;
1356 return r;
1357 }
1358
1359 static ssize_t omapfb_store_bklight_level(struct device *dev,
1360 struct device_attribute *attr,
1361 const char *buf, size_t size)
1362 {
1363 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1364 int r;
1365
1366 if (fbdev->panel->set_bklight_level) {
1367 unsigned int level;
1368
1369 if (sscanf(buf, "%10d", &level) == 1) {
1370 r = fbdev->panel->set_bklight_level(fbdev->panel,
1371 level);
1372 } else
1373 r = -EINVAL;
1374 } else
1375 r = -ENODEV;
1376 return r ? r : size;
1377 }
1378
1379 static ssize_t omapfb_show_bklight_max(struct device *dev,
1380 struct device_attribute *attr, char *buf)
1381 {
1382 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1383 int r;
1384
1385 if (fbdev->panel->get_bklight_level) {
1386 r = snprintf(buf, PAGE_SIZE, "%d\n",
1387 fbdev->panel->get_bklight_max(fbdev->panel));
1388 } else
1389 r = -ENODEV;
1390 return r;
1391 }
1392
1393 static struct device_attribute dev_attr_panel_name =
1394 __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1395 static DEVICE_ATTR(backlight_level, 0664,
1396 omapfb_show_bklight_level, omapfb_store_bklight_level);
1397 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1398
1399 static struct attribute *panel_attrs[] = {
1400 &dev_attr_panel_name.attr,
1401 &dev_attr_backlight_level.attr,
1402 &dev_attr_backlight_max.attr,
1403 NULL,
1404 };
1405
1406 static struct attribute_group panel_attr_grp = {
1407 .name = "panel",
1408 .attrs = panel_attrs,
1409 };
1410
1411 /* ctrl sysfs entries */
1412 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1413 struct device_attribute *attr, char *buf)
1414 {
1415 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1416
1417 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1418 }
1419
1420 static struct device_attribute dev_attr_ctrl_name =
1421 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1422
1423 static struct attribute *ctrl_attrs[] = {
1424 &dev_attr_ctrl_name.attr,
1425 NULL,
1426 };
1427
1428 static struct attribute_group ctrl_attr_grp = {
1429 .name = "ctrl",
1430 .attrs = ctrl_attrs,
1431 };
1432
1433 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1434 {
1435 int r;
1436
1437 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1438 goto fail0;
1439
1440 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1441 goto fail1;
1442
1443 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1444 goto fail2;
1445
1446 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1447 goto fail3;
1448
1449 return 0;
1450 fail3:
1451 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1452 fail2:
1453 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1454 fail1:
1455 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1456 fail0:
1457 dev_err(fbdev->dev, "unable to register sysfs interface\n");
1458 return r;
1459 }
1460
1461 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1462 {
1463 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1464 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1465 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1466 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1467 }
1468
1469 /*
1470 * ---------------------------------------------------------------------------
1471 * LDM callbacks
1472 * ---------------------------------------------------------------------------
1473 */
1474 /* Initialize system fb_info object and set the default video mode.
1475 * The frame buffer memory already allocated by lcddma_init
1476 */
1477 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1478 {
1479 struct fb_var_screeninfo *var = &info->var;
1480 struct fb_fix_screeninfo *fix = &info->fix;
1481 int r = 0;
1482
1483 info->fbops = &omapfb_ops;
1484 info->flags = FBINFO_FLAG_DEFAULT;
1485
1486 strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1487
1488 info->pseudo_palette = fbdev->pseudo_palette;
1489
1490 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0;
1491 var->xres = def_vxres;
1492 var->yres = def_vyres;
1493 var->xres_virtual = def_vxres;
1494 var->yres_virtual = def_vyres;
1495 var->rotate = def_rotate;
1496 var->bits_per_pixel = fbdev->panel->bpp;
1497
1498 set_fb_var(info, var);
1499 set_fb_fix(info, 1);
1500
1501 r = fb_alloc_cmap(&info->cmap, 16, 0);
1502 if (r != 0)
1503 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1504
1505 return r;
1506 }
1507
1508 /* Release the fb_info object */
1509 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1510 {
1511 fb_dealloc_cmap(&fbi->cmap);
1512 }
1513
1514 static void planes_cleanup(struct omapfb_device *fbdev)
1515 {
1516 int i;
1517
1518 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1519 if (fbdev->fb_info[i] == NULL)
1520 break;
1521 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1522 framebuffer_release(fbdev->fb_info[i]);
1523 }
1524 }
1525
1526 static int planes_init(struct omapfb_device *fbdev)
1527 {
1528 struct fb_info *fbi;
1529 int i;
1530 int r;
1531
1532 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1533 struct omapfb_plane_struct *plane;
1534 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1535 fbdev->dev);
1536 if (fbi == NULL) {
1537 dev_err(fbdev->dev,
1538 "unable to allocate memory for plane info\n");
1539 planes_cleanup(fbdev);
1540 return -ENOMEM;
1541 }
1542 plane = fbi->par;
1543 plane->idx = i;
1544 plane->fbdev = fbdev;
1545 plane->info.mirror = def_mirror;
1546 fbdev->fb_info[i] = fbi;
1547
1548 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1549 framebuffer_release(fbi);
1550 planes_cleanup(fbdev);
1551 return r;
1552 }
1553 plane->info.out_width = fbi->var.xres;
1554 plane->info.out_height = fbi->var.yres;
1555 }
1556 return 0;
1557 }
1558
1559 /*
1560 * Free driver resources. Can be called to rollback an aborted initialization
1561 * sequence.
1562 */
1563 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1564 {
1565 int i;
1566
1567 switch (state) {
1568 case OMAPFB_ACTIVE:
1569 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1570 unregister_framebuffer(fbdev->fb_info[i]);
1571 case 7:
1572 omapfb_unregister_sysfs(fbdev);
1573 case 6:
1574 fbdev->panel->disable(fbdev->panel);
1575 case 5:
1576 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1577 case 4:
1578 planes_cleanup(fbdev);
1579 case 3:
1580 ctrl_cleanup(fbdev);
1581 case 2:
1582 fbdev->panel->cleanup(fbdev->panel);
1583 case 1:
1584 dev_set_drvdata(fbdev->dev, NULL);
1585 kfree(fbdev);
1586 case 0:
1587 /* nothing to free */
1588 break;
1589 default:
1590 BUG();
1591 }
1592 }
1593
1594 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1595 {
1596 struct omapfb_platform_data *conf;
1597 char name[17];
1598 int i;
1599
1600 conf = dev_get_platdata(fbdev->dev);
1601
1602 fbdev->ctrl = NULL;
1603
1604 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1605 name[sizeof(name) - 1] = '\0';
1606
1607 if (strcmp(name, "internal") == 0) {
1608 fbdev->ctrl = fbdev->int_ctrl;
1609 return 0;
1610 }
1611
1612 for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1613 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1614 if (strcmp(ctrls[i]->name, name) == 0) {
1615 fbdev->ctrl = ctrls[i];
1616 break;
1617 }
1618 }
1619
1620 if (fbdev->ctrl == NULL) {
1621 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1622 return -1;
1623 }
1624
1625 return 0;
1626 }
1627
1628 static void check_required_callbacks(struct omapfb_device *fbdev)
1629 {
1630 #define _C(x) (fbdev->ctrl->x != NULL)
1631 #define _P(x) (fbdev->panel->x != NULL)
1632 BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1633 BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1634 _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1635 _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1636 _P(get_caps)));
1637 #undef _P
1638 #undef _C
1639 }
1640
1641 /*
1642 * Called by LDM binding to probe and attach a new device.
1643 * Initialization sequence:
1644 * 1. allocate system omapfb_device structure
1645 * 2. select controller type according to platform configuration
1646 * init LCD panel
1647 * 3. init LCD controller and LCD DMA
1648 * 4. init system fb_info structure for all planes
1649 * 5. setup video mode for first plane and enable it
1650 * 6. enable LCD panel
1651 * 7. register sysfs attributes
1652 * OMAPFB_ACTIVE: register system fb_info structure for all planes
1653 */
1654 static int omapfb_do_probe(struct platform_device *pdev,
1655 struct lcd_panel *panel)
1656 {
1657 struct omapfb_device *fbdev = NULL;
1658 int init_state;
1659 unsigned long phz, hhz, vhz;
1660 unsigned long vram;
1661 int i;
1662 int r = 0;
1663
1664 init_state = 0;
1665
1666 if (pdev->num_resources != 0) {
1667 dev_err(&pdev->dev, "probed for an unknown device\n");
1668 r = -ENODEV;
1669 goto cleanup;
1670 }
1671
1672 if (dev_get_platdata(&pdev->dev) == NULL) {
1673 dev_err(&pdev->dev, "missing platform data\n");
1674 r = -ENOENT;
1675 goto cleanup;
1676 }
1677
1678 fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1679 if (fbdev == NULL) {
1680 dev_err(&pdev->dev,
1681 "unable to allocate memory for device info\n");
1682 r = -ENOMEM;
1683 goto cleanup;
1684 }
1685 init_state++;
1686
1687 fbdev->dev = &pdev->dev;
1688 fbdev->panel = panel;
1689 fbdev->dssdev = &omapdss_device;
1690 platform_set_drvdata(pdev, fbdev);
1691
1692 mutex_init(&fbdev->rqueue_mutex);
1693
1694 fbdev->int_ctrl = &omap1_int_ctrl;
1695 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1696 fbdev->ext_if = &omap1_ext_if;
1697 #endif
1698 if (omapfb_find_ctrl(fbdev) < 0) {
1699 dev_err(fbdev->dev,
1700 "LCD controller not found, board not supported\n");
1701 r = -ENODEV;
1702 goto cleanup;
1703 }
1704
1705 r = fbdev->panel->init(fbdev->panel, fbdev);
1706 if (r)
1707 goto cleanup;
1708
1709 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1710
1711 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1712 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1713
1714 init_state++;
1715
1716 r = ctrl_init(fbdev);
1717 if (r)
1718 goto cleanup;
1719 if (fbdev->ctrl->mmap != NULL)
1720 omapfb_ops.fb_mmap = omapfb_mmap;
1721 init_state++;
1722
1723 check_required_callbacks(fbdev);
1724
1725 r = planes_init(fbdev);
1726 if (r)
1727 goto cleanup;
1728 init_state++;
1729
1730 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1731 /* Set DMA priority for EMIFF access to highest */
1732 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1733 #endif
1734
1735 r = ctrl_change_mode(fbdev->fb_info[0]);
1736 if (r) {
1737 dev_err(fbdev->dev, "mode setting failed\n");
1738 goto cleanup;
1739 }
1740
1741 /* GFX plane is enabled by default */
1742 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1743 if (r)
1744 goto cleanup;
1745
1746 omapfb_set_update_mode(fbdev, manual_update ?
1747 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1748 init_state++;
1749
1750 r = fbdev->panel->enable(fbdev->panel);
1751 if (r)
1752 goto cleanup;
1753 init_state++;
1754
1755 r = omapfb_register_sysfs(fbdev);
1756 if (r)
1757 goto cleanup;
1758 init_state++;
1759
1760 vram = 0;
1761 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1762 r = register_framebuffer(fbdev->fb_info[i]);
1763 if (r != 0) {
1764 dev_err(fbdev->dev,
1765 "registering framebuffer %d failed\n", i);
1766 goto cleanup;
1767 }
1768 vram += fbdev->mem_desc.region[i].size;
1769 }
1770
1771 fbdev->state = OMAPFB_ACTIVE;
1772
1773 panel = fbdev->panel;
1774 phz = panel->pixel_clock * 1000;
1775 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1776 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1777
1778 omapfb_dev = fbdev;
1779
1780 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1781 vram, fbdev->mem_desc.region_cnt);
1782 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1783 "vfreq %lu.%lu Hz\n",
1784 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1785
1786 return 0;
1787
1788 cleanup:
1789 omapfb_free_resources(fbdev, init_state);
1790
1791 return r;
1792 }
1793
1794 static int omapfb_probe(struct platform_device *pdev)
1795 {
1796 int r;
1797
1798 BUG_ON(fbdev_pdev != NULL);
1799
1800 r = platform_device_register(&omapdss_device);
1801 if (r) {
1802 dev_err(&pdev->dev, "can't register omapdss device\n");
1803 return r;
1804 }
1805
1806 /* Delay actual initialization until the LCD is registered */
1807 fbdev_pdev = pdev;
1808 if (fbdev_panel != NULL)
1809 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1810 return 0;
1811 }
1812
1813 void omapfb_register_panel(struct lcd_panel *panel)
1814 {
1815 BUG_ON(fbdev_panel != NULL);
1816
1817 fbdev_panel = panel;
1818 if (fbdev_pdev != NULL)
1819 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1820 }
1821 EXPORT_SYMBOL_GPL(omapfb_register_panel);
1822
1823 /* Called when the device is being detached from the driver */
1824 static int omapfb_remove(struct platform_device *pdev)
1825 {
1826 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1827 enum omapfb_state saved_state = fbdev->state;
1828
1829 /* FIXME: wait till completion of pending events */
1830
1831 fbdev->state = OMAPFB_DISABLED;
1832 omapfb_free_resources(fbdev, saved_state);
1833
1834 platform_device_unregister(&omapdss_device);
1835 fbdev->dssdev = NULL;
1836
1837 return 0;
1838 }
1839
1840 /* PM suspend */
1841 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1842 {
1843 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1844
1845 if (fbdev != NULL)
1846 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1847 return 0;
1848 }
1849
1850 /* PM resume */
1851 static int omapfb_resume(struct platform_device *pdev)
1852 {
1853 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1854
1855 if (fbdev != NULL)
1856 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1857 return 0;
1858 }
1859
1860 static struct platform_driver omapfb_driver = {
1861 .probe = omapfb_probe,
1862 .remove = omapfb_remove,
1863 .suspend = omapfb_suspend,
1864 .resume = omapfb_resume,
1865 .driver = {
1866 .name = MODULE_NAME,
1867 },
1868 };
1869
1870 #ifndef MODULE
1871
1872 /* Process kernel command line parameters */
1873 static int __init omapfb_setup(char *options)
1874 {
1875 char *this_opt = NULL;
1876 int r = 0;
1877
1878 pr_debug("omapfb: options %s\n", options);
1879
1880 if (!options || !*options)
1881 return 0;
1882
1883 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1884 if (!strncmp(this_opt, "accel", 5))
1885 def_accel = 1;
1886 else if (!strncmp(this_opt, "vram:", 5)) {
1887 char *suffix;
1888 unsigned long vram;
1889 vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1890 switch (suffix[0]) {
1891 case '\0':
1892 break;
1893 case 'm':
1894 case 'M':
1895 vram *= 1024;
1896 /* Fall through */
1897 case 'k':
1898 case 'K':
1899 vram *= 1024;
1900 break;
1901 default:
1902 pr_debug("omapfb: invalid vram suffix %c\n",
1903 suffix[0]);
1904 r = -1;
1905 }
1906 def_vram[def_vram_cnt++] = vram;
1907 }
1908 else if (!strncmp(this_opt, "vxres:", 6))
1909 def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1910 else if (!strncmp(this_opt, "vyres:", 6))
1911 def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1912 else if (!strncmp(this_opt, "rotate:", 7))
1913 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1914 else if (!strncmp(this_opt, "mirror:", 7))
1915 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1916 else if (!strncmp(this_opt, "manual_update", 13))
1917 manual_update = 1;
1918 else {
1919 pr_debug("omapfb: invalid option\n");
1920 r = -1;
1921 }
1922 }
1923
1924 return r;
1925 }
1926
1927 #endif
1928
1929 /* Register both the driver and the device */
1930 static int __init omapfb_init(void)
1931 {
1932 #ifndef MODULE
1933 char *option;
1934
1935 if (fb_get_options("omapfb", &option))
1936 return -ENODEV;
1937 omapfb_setup(option);
1938 #endif
1939 /* Register the driver with LDM */
1940 if (platform_driver_register(&omapfb_driver)) {
1941 pr_debug("failed to register omapfb driver\n");
1942 return -ENODEV;
1943 }
1944
1945 return 0;
1946 }
1947
1948 static void __exit omapfb_cleanup(void)
1949 {
1950 platform_driver_unregister(&omapfb_driver);
1951 }
1952
1953 module_param_named(accel, def_accel, uint, 0664);
1954 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1955 module_param_named(vxres, def_vxres, long, 0664);
1956 module_param_named(vyres, def_vyres, long, 0664);
1957 module_param_named(rotate, def_rotate, uint, 0664);
1958 module_param_named(mirror, def_mirror, uint, 0664);
1959 module_param_named(manual_update, manual_update, bool, 0664);
1960
1961 module_init(omapfb_init);
1962 module_exit(omapfb_cleanup);
1963
1964 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1965 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1966 MODULE_LICENSE("GPL");
Linux with added FPC-III support