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Merge remote-tracking branch 'pm/linux-next'
[linux-2.6/next.git] / drivers / video / omap / omapfb_main.c
blobb3ddd743d8a6f59e5b7154ff1a6233202440b43d
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
32 #include <plat/dma.h>
33
34 #include "omapfb.h"
35 #include "lcdc.h"
36 #include "dispc.h"
37
38 #define MODULE_NAME "omapfb"
39
40 static unsigned int def_accel;
41 static unsigned long def_vram[OMAPFB_PLANE_NUM];
42 static unsigned int def_vram_cnt;
43 static unsigned long def_vxres;
44 static unsigned long def_vyres;
45 static unsigned int def_rotate;
46 static unsigned int def_mirror;
47
48 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
49 static int manual_update = 1;
50 #else
51 static int manual_update;
52 #endif
53
54 static struct platform_device *fbdev_pdev;
55 static struct lcd_panel *fbdev_panel;
56 static struct omapfb_device *omapfb_dev;
57
58 struct caps_table_struct {
59 unsigned long flag;
60 const char *name;
61 };
62
63 static struct caps_table_struct ctrl_caps[] = {
64 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
65 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" },
66 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
67 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" },
68 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
69 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" },
70 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" },
71 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" },
72 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
73 };
74
75 static struct caps_table_struct color_caps[] = {
76 { 1 << OMAPFB_COLOR_RGB565, "RGB565", },
77 { 1 << OMAPFB_COLOR_YUV422, "YUV422", },
78 { 1 << OMAPFB_COLOR_YUV420, "YUV420", },
79 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", },
80 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", },
81 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", },
82 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", },
83 { 1 << OMAPFB_COLOR_RGB444, "RGB444", },
84 { 1 << OMAPFB_COLOR_YUY422, "YUY422", },
85 };
86
87 static void omapdss_release(struct device *dev)
88 {
89 }
90
91 /* dummy device for clocks */
92 static struct platform_device omapdss_device = {
93 .name = "omapdss_dss",
94 .id = -1,
95 .dev = {
96 .release = omapdss_release,
97 },
98 };
99
100 /*
101 * ---------------------------------------------------------------------------
102 * LCD panel
103 * ---------------------------------------------------------------------------
104 */
105 extern struct lcd_ctrl hwa742_ctrl;
106 extern struct lcd_ctrl blizzard_ctrl;
107
108 static const struct lcd_ctrl *ctrls[] = {
109 #ifdef CONFIG_ARCH_OMAP1
110 &omap1_int_ctrl,
111 #else
112 &omap2_int_ctrl,
113 #endif
114
115 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
116 &hwa742_ctrl,
117 #endif
118 #ifdef CONFIG_FB_OMAP_LCDC_BLIZZARD
119 &blizzard_ctrl,
120 #endif
121 };
122
123 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
124 #ifdef CONFIG_ARCH_OMAP1
125 extern struct lcd_ctrl_extif omap1_ext_if;
126 #else
127 extern struct lcd_ctrl_extif omap2_ext_if;
128 #endif
129 #endif
130
131 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
132 {
133 mutex_lock(&fbdev->rqueue_mutex);
134 }
135
136 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
137 {
138 mutex_unlock(&fbdev->rqueue_mutex);
139 }
140
141 /*
142 * ---------------------------------------------------------------------------
143 * LCD controller and LCD DMA
144 * ---------------------------------------------------------------------------
145 */
146 /* Lookup table to map elem size to elem type. */
147 static const int dma_elem_type[] = {
148 0,
149 OMAP_DMA_DATA_TYPE_S8,
150 OMAP_DMA_DATA_TYPE_S16,
151 0,
152 OMAP_DMA_DATA_TYPE_S32,
153 };
154
155 /*
156 * Allocate resources needed for LCD controller and LCD DMA operations. Video
157 * memory is allocated from system memory according to the virtual display
158 * size, except if a bigger memory size is specified explicitly as a kernel
159 * parameter.
160 */
161 static int ctrl_init(struct omapfb_device *fbdev)
162 {
163 int r;
164 int i;
165
166 /* kernel/module vram parameters override boot tags/board config */
167 if (def_vram_cnt) {
168 for (i = 0; i < def_vram_cnt; i++)
169 fbdev->mem_desc.region[i].size =
170 PAGE_ALIGN(def_vram[i]);
171 fbdev->mem_desc.region_cnt = i;
172 } else {
173 struct omapfb_platform_data *conf;
174
175 conf = fbdev->dev->platform_data;
176 fbdev->mem_desc = conf->mem_desc;
177 }
178
179 if (!fbdev->mem_desc.region_cnt) {
180 struct lcd_panel *panel = fbdev->panel;
181 int def_size;
182 int bpp = panel->bpp;
183
184 /* 12 bpp is packed in 16 bits */
185 if (bpp == 12)
186 bpp = 16;
187 def_size = def_vxres * def_vyres * bpp / 8;
188 fbdev->mem_desc.region_cnt = 1;
189 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
190 }
191 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
192 if (r < 0) {
193 dev_err(fbdev->dev, "controller initialization failed (%d)\n",
194 r);
195 return r;
196 }
197
198 #ifdef DEBUG
199 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
200 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
201 i,
202 fbdev->mem_desc.region[i].paddr,
203 fbdev->mem_desc.region[i].vaddr,
204 fbdev->mem_desc.region[i].size);
205 }
206 #endif
207 return 0;
208 }
209
210 static void ctrl_cleanup(struct omapfb_device *fbdev)
211 {
212 fbdev->ctrl->cleanup();
213 }
214
215 /* Must be called with fbdev->rqueue_mutex held. */
216 static int ctrl_change_mode(struct fb_info *fbi)
217 {
218 int r;
219 unsigned long offset;
220 struct omapfb_plane_struct *plane = fbi->par;
221 struct omapfb_device *fbdev = plane->fbdev;
222 struct fb_var_screeninfo *var = &fbi->var;
223
224 offset = var->yoffset * fbi->fix.line_length +
225 var->xoffset * var->bits_per_pixel / 8;
226
227 if (fbdev->ctrl->sync)
228 fbdev->ctrl->sync();
229 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
230 offset, var->xres_virtual,
231 plane->info.pos_x, plane->info.pos_y,
232 var->xres, var->yres, plane->color_mode);
233 if (r < 0)
234 return r;
235
236 if (fbdev->ctrl->set_rotate != NULL) {
237 r = fbdev->ctrl->set_rotate(var->rotate);
238 if (r < 0)
239 return r;
240 }
241
242 if (fbdev->ctrl->set_scale != NULL)
243 r = fbdev->ctrl->set_scale(plane->idx,
244 var->xres, var->yres,
245 plane->info.out_width,
246 plane->info.out_height);
247
248 return r;
249 }
250
251 /*
252 * ---------------------------------------------------------------------------
253 * fbdev framework callbacks and the ioctl interface
254 * ---------------------------------------------------------------------------
255 */
256 /* Called each time the omapfb device is opened */
257 static int omapfb_open(struct fb_info *info, int user)
258 {
259 return 0;
260 }
261
262 static void omapfb_sync(struct fb_info *info);
263
264 /* Called when the omapfb device is closed. We make sure that any pending
265 * gfx DMA operations are ended, before we return. */
266 static int omapfb_release(struct fb_info *info, int user)
267 {
268 omapfb_sync(info);
269 return 0;
270 }
271
272 /* Store a single color palette entry into a pseudo palette or the hardware
273 * palette if one is available. For now we support only 16bpp and thus store
274 * the entry only to the pseudo palette.
275 */
276 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
277 u_int blue, u_int transp, int update_hw_pal)
278 {
279 struct omapfb_plane_struct *plane = info->par;
280 struct omapfb_device *fbdev = plane->fbdev;
281 struct fb_var_screeninfo *var = &info->var;
282 int r = 0;
283
284 switch (plane->color_mode) {
285 case OMAPFB_COLOR_YUV422:
286 case OMAPFB_COLOR_YUV420:
287 case OMAPFB_COLOR_YUY422:
288 r = -EINVAL;
289 break;
290 case OMAPFB_COLOR_CLUT_8BPP:
291 case OMAPFB_COLOR_CLUT_4BPP:
292 case OMAPFB_COLOR_CLUT_2BPP:
293 case OMAPFB_COLOR_CLUT_1BPP:
294 if (fbdev->ctrl->setcolreg)
295 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
296 transp, update_hw_pal);
297 /* Fallthrough */
298 case OMAPFB_COLOR_RGB565:
299 case OMAPFB_COLOR_RGB444:
300 if (r != 0)
301 break;
302
303 if (regno < 0) {
304 r = -EINVAL;
305 break;
306 }
307
308 if (regno < 16) {
309 u16 pal;
310 pal = ((red >> (16 - var->red.length)) <<
311 var->red.offset) |
312 ((green >> (16 - var->green.length)) <<
313 var->green.offset) |
314 (blue >> (16 - var->blue.length));
315 ((u32 *)(info->pseudo_palette))[regno] = pal;
316 }
317 break;
318 default:
319 BUG();
320 }
321 return r;
322 }
323
324 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
325 u_int transp, struct fb_info *info)
326 {
327 return _setcolreg(info, regno, red, green, blue, transp, 1);
328 }
329
330 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
331 {
332 int count, index, r;
333 u16 *red, *green, *blue, *transp;
334 u16 trans = 0xffff;
335
336 red = cmap->red;
337 green = cmap->green;
338 blue = cmap->blue;
339 transp = cmap->transp;
340 index = cmap->start;
341
342 for (count = 0; count < cmap->len; count++) {
343 if (transp)
344 trans = *transp++;
345 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
346 count == cmap->len - 1);
347 if (r != 0)
348 return r;
349 }
350
351 return 0;
352 }
353
354 static int omapfb_update_full_screen(struct fb_info *fbi);
355
356 static int omapfb_blank(int blank, struct fb_info *fbi)
357 {
358 struct omapfb_plane_struct *plane = fbi->par;
359 struct omapfb_device *fbdev = plane->fbdev;
360 int do_update = 0;
361 int r = 0;
362
363 omapfb_rqueue_lock(fbdev);
364 switch (blank) {
365 case FB_BLANK_UNBLANK:
366 if (fbdev->state == OMAPFB_SUSPENDED) {
367 if (fbdev->ctrl->resume)
368 fbdev->ctrl->resume();
369 fbdev->panel->enable(fbdev->panel);
370 fbdev->state = OMAPFB_ACTIVE;
371 if (fbdev->ctrl->get_update_mode() ==
372 OMAPFB_MANUAL_UPDATE)
373 do_update = 1;
374 }
375 break;
376 case FB_BLANK_POWERDOWN:
377 if (fbdev->state == OMAPFB_ACTIVE) {
378 fbdev->panel->disable(fbdev->panel);
379 if (fbdev->ctrl->suspend)
380 fbdev->ctrl->suspend();
381 fbdev->state = OMAPFB_SUSPENDED;
382 }
383 break;
384 default:
385 r = -EINVAL;
386 }
387 omapfb_rqueue_unlock(fbdev);
388
389 if (r == 0 && do_update)
390 r = omapfb_update_full_screen(fbi);
391
392 return r;
393 }
394
395 static void omapfb_sync(struct fb_info *fbi)
396 {
397 struct omapfb_plane_struct *plane = fbi->par;
398 struct omapfb_device *fbdev = plane->fbdev;
399
400 omapfb_rqueue_lock(fbdev);
401 if (fbdev->ctrl->sync)
402 fbdev->ctrl->sync();
403 omapfb_rqueue_unlock(fbdev);
404 }
405
406 /*
407 * Set fb_info.fix fields and also updates fbdev.
408 * When calling this fb_info.var must be set up already.
409 */
410 static void set_fb_fix(struct fb_info *fbi, int from_init)
411 {
412 struct fb_fix_screeninfo *fix = &fbi->fix;
413 struct fb_var_screeninfo *var = &fbi->var;
414 struct omapfb_plane_struct *plane = fbi->par;
415 struct omapfb_mem_region *rg;
416 int bpp;
417
418 rg = &plane->fbdev->mem_desc.region[plane->idx];
419 fbi->screen_base = rg->vaddr;
420
421 if (!from_init) {
422 mutex_lock(&fbi->mm_lock);
423 fix->smem_start = rg->paddr;
424 fix->smem_len = rg->size;
425 mutex_unlock(&fbi->mm_lock);
426 } else {
427 fix->smem_start = rg->paddr;
428 fix->smem_len = rg->size;
429 }
430
431 fix->type = FB_TYPE_PACKED_PIXELS;
432 bpp = var->bits_per_pixel;
433 if (var->nonstd)
434 fix->visual = FB_VISUAL_PSEUDOCOLOR;
435 else switch (var->bits_per_pixel) {
436 case 16:
437 case 12:
438 fix->visual = FB_VISUAL_TRUECOLOR;
439 /* 12bpp is stored in 16 bits */
440 bpp = 16;
441 break;
442 case 1:
443 case 2:
444 case 4:
445 case 8:
446 fix->visual = FB_VISUAL_PSEUDOCOLOR;
447 break;
448 }
449 fix->accel = FB_ACCEL_OMAP1610;
450 fix->line_length = var->xres_virtual * bpp / 8;
451 }
452
453 static int set_color_mode(struct omapfb_plane_struct *plane,
454 struct fb_var_screeninfo *var)
455 {
456 switch (var->nonstd) {
457 case 0:
458 break;
459 case OMAPFB_COLOR_YUV422:
460 var->bits_per_pixel = 16;
461 plane->color_mode = var->nonstd;
462 return 0;
463 case OMAPFB_COLOR_YUV420:
464 var->bits_per_pixel = 12;
465 plane->color_mode = var->nonstd;
466 return 0;
467 case OMAPFB_COLOR_YUY422:
468 var->bits_per_pixel = 16;
469 plane->color_mode = var->nonstd;
470 return 0;
471 default:
472 return -EINVAL;
473 }
474
475 switch (var->bits_per_pixel) {
476 case 1:
477 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
478 return 0;
479 case 2:
480 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
481 return 0;
482 case 4:
483 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
484 return 0;
485 case 8:
486 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
487 return 0;
488 case 12:
489 var->bits_per_pixel = 16;
490 case 16:
491 if (plane->fbdev->panel->bpp == 12)
492 plane->color_mode = OMAPFB_COLOR_RGB444;
493 else
494 plane->color_mode = OMAPFB_COLOR_RGB565;
495 return 0;
496 default:
497 return -EINVAL;
498 }
499 }
500
501 /*
502 * Check the values in var against our capabilities and in case of out of
503 * bound values try to adjust them.
504 */
505 static int set_fb_var(struct fb_info *fbi,
506 struct fb_var_screeninfo *var)
507 {
508 int bpp;
509 unsigned long max_frame_size;
510 unsigned long line_size;
511 int xres_min, xres_max;
512 int yres_min, yres_max;
513 struct omapfb_plane_struct *plane = fbi->par;
514 struct omapfb_device *fbdev = plane->fbdev;
515 struct lcd_panel *panel = fbdev->panel;
516
517 if (set_color_mode(plane, var) < 0)
518 return -EINVAL;
519
520 bpp = var->bits_per_pixel;
521 if (plane->color_mode == OMAPFB_COLOR_RGB444)
522 bpp = 16;
523
524 switch (var->rotate) {
525 case 0:
526 case 180:
527 xres_min = OMAPFB_PLANE_XRES_MIN;
528 xres_max = panel->x_res;
529 yres_min = OMAPFB_PLANE_YRES_MIN;
530 yres_max = panel->y_res;
531 if (cpu_is_omap15xx()) {
532 var->xres = panel->x_res;
533 var->yres = panel->y_res;
534 }
535 break;
536 case 90:
537 case 270:
538 xres_min = OMAPFB_PLANE_YRES_MIN;
539 xres_max = panel->y_res;
540 yres_min = OMAPFB_PLANE_XRES_MIN;
541 yres_max = panel->x_res;
542 if (cpu_is_omap15xx()) {
543 var->xres = panel->y_res;
544 var->yres = panel->x_res;
545 }
546 break;
547 default:
548 return -EINVAL;
549 }
550
551 if (var->xres < xres_min)
552 var->xres = xres_min;
553 if (var->yres < yres_min)
554 var->yres = yres_min;
555 if (var->xres > xres_max)
556 var->xres = xres_max;
557 if (var->yres > yres_max)
558 var->yres = yres_max;
559
560 if (var->xres_virtual < var->xres)
561 var->xres_virtual = var->xres;
562 if (var->yres_virtual < var->yres)
563 var->yres_virtual = var->yres;
564 max_frame_size = fbdev->mem_desc.region[plane->idx].size;
565 line_size = var->xres_virtual * bpp / 8;
566 if (line_size * var->yres_virtual > max_frame_size) {
567 /* Try to keep yres_virtual first */
568 line_size = max_frame_size / var->yres_virtual;
569 var->xres_virtual = line_size * 8 / bpp;
570 if (var->xres_virtual < var->xres) {
571 /* Still doesn't fit. Shrink yres_virtual too */
572 var->xres_virtual = var->xres;
573 line_size = var->xres * bpp / 8;
574 var->yres_virtual = max_frame_size / line_size;
575 }
576 /* Recheck this, as the virtual size changed. */
577 if (var->xres_virtual < var->xres)
578 var->xres = var->xres_virtual;
579 if (var->yres_virtual < var->yres)
580 var->yres = var->yres_virtual;
581 if (var->xres < xres_min || var->yres < yres_min)
582 return -EINVAL;
583 }
584 if (var->xres + var->xoffset > var->xres_virtual)
585 var->xoffset = var->xres_virtual - var->xres;
586 if (var->yres + var->yoffset > var->yres_virtual)
587 var->yoffset = var->yres_virtual - var->yres;
588
589 if (plane->color_mode == OMAPFB_COLOR_RGB444) {
590 var->red.offset = 8; var->red.length = 4;
591 var->red.msb_right = 0;
592 var->green.offset = 4; var->green.length = 4;
593 var->green.msb_right = 0;
594 var->blue.offset = 0; var->blue.length = 4;
595 var->blue.msb_right = 0;
596 } else {
597 var->red.offset = 11; var->red.length = 5;
598 var->red.msb_right = 0;
599 var->green.offset = 5; var->green.length = 6;
600 var->green.msb_right = 0;
601 var->blue.offset = 0; var->blue.length = 5;
602 var->blue.msb_right = 0;
603 }
604
605 var->height = -1;
606 var->width = -1;
607 var->grayscale = 0;
608
609 /* pixclock in ps, the rest in pixclock */
610 var->pixclock = 10000000 / (panel->pixel_clock / 100);
611 var->left_margin = panel->hfp;
612 var->right_margin = panel->hbp;
613 var->upper_margin = panel->vfp;
614 var->lower_margin = panel->vbp;
615 var->hsync_len = panel->hsw;
616 var->vsync_len = panel->vsw;
617
618 /* TODO: get these from panel->config */
619 var->vmode = FB_VMODE_NONINTERLACED;
620 var->sync = 0;
621
622 return 0;
623 }
624
625
626 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
627 static void omapfb_rotate(struct fb_info *fbi, int rotate)
628 {
629 struct omapfb_plane_struct *plane = fbi->par;
630 struct omapfb_device *fbdev = plane->fbdev;
631
632 omapfb_rqueue_lock(fbdev);
633 if (rotate != fbi->var.rotate) {
634 struct fb_var_screeninfo *new_var = &fbdev->new_var;
635
636 memcpy(new_var, &fbi->var, sizeof(*new_var));
637 new_var->rotate = rotate;
638 if (set_fb_var(fbi, new_var) == 0 &&
639 memcmp(new_var, &fbi->var, sizeof(*new_var))) {
640 memcpy(&fbi->var, new_var, sizeof(*new_var));
641 ctrl_change_mode(fbi);
642 }
643 }
644 omapfb_rqueue_unlock(fbdev);
645 }
646
647 /*
648 * Set new x,y offsets in the virtual display for the visible area and switch
649 * to the new mode.
650 */
651 static int omapfb_pan_display(struct fb_var_screeninfo *var,
652 struct fb_info *fbi)
653 {
654 struct omapfb_plane_struct *plane = fbi->par;
655 struct omapfb_device *fbdev = plane->fbdev;
656 int r = 0;
657
658 omapfb_rqueue_lock(fbdev);
659 if (var->xoffset != fbi->var.xoffset ||
660 var->yoffset != fbi->var.yoffset) {
661 struct fb_var_screeninfo *new_var = &fbdev->new_var;
662
663 memcpy(new_var, &fbi->var, sizeof(*new_var));
664 new_var->xoffset = var->xoffset;
665 new_var->yoffset = var->yoffset;
666 if (set_fb_var(fbi, new_var))
667 r = -EINVAL;
668 else {
669 memcpy(&fbi->var, new_var, sizeof(*new_var));
670 ctrl_change_mode(fbi);
671 }
672 }
673 omapfb_rqueue_unlock(fbdev);
674
675 return r;
676 }
677
678 /* Set mirror to vertical axis and switch to the new mode. */
679 static int omapfb_mirror(struct fb_info *fbi, int mirror)
680 {
681 struct omapfb_plane_struct *plane = fbi->par;
682 struct omapfb_device *fbdev = plane->fbdev;
683 int r = 0;
684
685 omapfb_rqueue_lock(fbdev);
686 mirror = mirror ? 1 : 0;
687 if (cpu_is_omap15xx())
688 r = -EINVAL;
689 else if (mirror != plane->info.mirror) {
690 plane->info.mirror = mirror;
691 r = ctrl_change_mode(fbi);
692 }
693 omapfb_rqueue_unlock(fbdev);
694
695 return r;
696 }
697
698 /*
699 * Check values in var, try to adjust them in case of out of bound values if
700 * possible, or return error.
701 */
702 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
703 {
704 struct omapfb_plane_struct *plane = fbi->par;
705 struct omapfb_device *fbdev = plane->fbdev;
706 int r;
707
708 omapfb_rqueue_lock(fbdev);
709 if (fbdev->ctrl->sync != NULL)
710 fbdev->ctrl->sync();
711 r = set_fb_var(fbi, var);
712 omapfb_rqueue_unlock(fbdev);
713
714 return r;
715 }
716
717 /*
718 * Switch to a new mode. The parameters for it has been check already by
719 * omapfb_check_var.
720 */
721 static int omapfb_set_par(struct fb_info *fbi)
722 {
723 struct omapfb_plane_struct *plane = fbi->par;
724 struct omapfb_device *fbdev = plane->fbdev;
725 int r = 0;
726
727 omapfb_rqueue_lock(fbdev);
728 set_fb_fix(fbi, 0);
729 r = ctrl_change_mode(fbi);
730 omapfb_rqueue_unlock(fbdev);
731
732 return r;
733 }
734
735 int omapfb_update_window_async(struct fb_info *fbi,
736 struct omapfb_update_window *win,
737 void (*callback)(void *),
738 void *callback_data)
739 {
740 int xres, yres;
741 struct omapfb_plane_struct *plane = fbi->par;
742 struct omapfb_device *fbdev = plane->fbdev;
743 struct fb_var_screeninfo *var = &fbi->var;
744
745 switch (var->rotate) {
746 case 0:
747 case 180:
748 xres = fbdev->panel->x_res;
749 yres = fbdev->panel->y_res;
750 break;
751 case 90:
752 case 270:
753 xres = fbdev->panel->y_res;
754 yres = fbdev->panel->x_res;
755 break;
756 default:
757 return -EINVAL;
758 }
759
760 if (win->x >= xres || win->y >= yres ||
761 win->out_x > xres || win->out_y > yres)
762 return -EINVAL;
763
764 if (!fbdev->ctrl->update_window ||
765 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
766 return -ENODEV;
767
768 if (win->x + win->width > xres)
769 win->width = xres - win->x;
770 if (win->y + win->height > yres)
771 win->height = yres - win->y;
772 if (win->out_x + win->out_width > xres)
773 win->out_width = xres - win->out_x;
774 if (win->out_y + win->out_height > yres)
775 win->out_height = yres - win->out_y;
776 if (!win->width || !win->height || !win->out_width || !win->out_height)
777 return 0;
778
779 return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
780 }
781 EXPORT_SYMBOL(omapfb_update_window_async);
782
783 static int omapfb_update_win(struct fb_info *fbi,
784 struct omapfb_update_window *win)
785 {
786 struct omapfb_plane_struct *plane = fbi->par;
787 int ret;
788
789 omapfb_rqueue_lock(plane->fbdev);
790 ret = omapfb_update_window_async(fbi, win, NULL, NULL);
791 omapfb_rqueue_unlock(plane->fbdev);
792
793 return ret;
794 }
795
796 static int omapfb_update_full_screen(struct fb_info *fbi)
797 {
798 struct omapfb_plane_struct *plane = fbi->par;
799 struct omapfb_device *fbdev = plane->fbdev;
800 struct omapfb_update_window win;
801 int r;
802
803 if (!fbdev->ctrl->update_window ||
804 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
805 return -ENODEV;
806
807 win.x = 0;
808 win.y = 0;
809 win.width = fbi->var.xres;
810 win.height = fbi->var.yres;
811 win.out_x = 0;
812 win.out_y = 0;
813 win.out_width = fbi->var.xres;
814 win.out_height = fbi->var.yres;
815 win.format = 0;
816
817 omapfb_rqueue_lock(fbdev);
818 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
819 omapfb_rqueue_unlock(fbdev);
820
821 return r;
822 }
823
824 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
825 {
826 struct omapfb_plane_struct *plane = fbi->par;
827 struct omapfb_device *fbdev = plane->fbdev;
828 struct lcd_panel *panel = fbdev->panel;
829 struct omapfb_plane_info old_info;
830 int r = 0;
831
832 if (pi->pos_x + pi->out_width > panel->x_res ||
833 pi->pos_y + pi->out_height > panel->y_res)
834 return -EINVAL;
835
836 omapfb_rqueue_lock(fbdev);
837 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
838 /*
839 * This plane's memory was freed, can't enable it
840 * until it's reallocated.
841 */
842 r = -EINVAL;
843 goto out;
844 }
845 old_info = plane->info;
846 plane->info = *pi;
847 if (pi->enabled) {
848 r = ctrl_change_mode(fbi);
849 if (r < 0) {
850 plane->info = old_info;
851 goto out;
852 }
853 }
854 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
855 if (r < 0) {
856 plane->info = old_info;
857 goto out;
858 }
859 out:
860 omapfb_rqueue_unlock(fbdev);
861 return r;
862 }
863
864 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
865 {
866 struct omapfb_plane_struct *plane = fbi->par;
867
868 *pi = plane->info;
869 return 0;
870 }
871
872 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
873 {
874 struct omapfb_plane_struct *plane = fbi->par;
875 struct omapfb_device *fbdev = plane->fbdev;
876 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
877 size_t size;
878 int r = 0;
879
880 if (fbdev->ctrl->setup_mem == NULL)
881 return -ENODEV;
882 if (mi->type > OMAPFB_MEMTYPE_MAX)
883 return -EINVAL;
884
885 size = PAGE_ALIGN(mi->size);
886 omapfb_rqueue_lock(fbdev);
887 if (plane->info.enabled) {
888 r = -EBUSY;
889 goto out;
890 }
891 if (rg->size != size || rg->type != mi->type) {
892 struct fb_var_screeninfo *new_var = &fbdev->new_var;
893 unsigned long old_size = rg->size;
894 u8 old_type = rg->type;
895 unsigned long paddr;
896
897 rg->size = size;
898 rg->type = mi->type;
899 /*
900 * size == 0 is a special case, for which we
901 * don't check / adjust the screen parameters.
902 * This isn't a problem since the plane can't
903 * be reenabled unless its size is > 0.
904 */
905 if (old_size != size && size) {
906 if (size) {
907 memcpy(new_var, &fbi->var, sizeof(*new_var));
908 r = set_fb_var(fbi, new_var);
909 if (r < 0)
910 goto out;
911 }
912 }
913
914 if (fbdev->ctrl->sync)
915 fbdev->ctrl->sync();
916 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
917 if (r < 0) {
918 /* Revert changes. */
919 rg->size = old_size;
920 rg->type = old_type;
921 goto out;
922 }
923 rg->paddr = paddr;
924
925 if (old_size != size) {
926 if (size) {
927 memcpy(&fbi->var, new_var, sizeof(fbi->var));
928 set_fb_fix(fbi, 0);
929 } else {
930 /*
931 * Set these explicitly to indicate that the
932 * plane memory is dealloce'd, the other
933 * screen parameters in var / fix are invalid.
934 */
935 mutex_lock(&fbi->mm_lock);
936 fbi->fix.smem_start = 0;
937 fbi->fix.smem_len = 0;
938 mutex_unlock(&fbi->mm_lock);
939 }
940 }
941 }
942 out:
943 omapfb_rqueue_unlock(fbdev);
944
945 return r;
946 }
947
948 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
949 {
950 struct omapfb_plane_struct *plane = fbi->par;
951 struct omapfb_device *fbdev = plane->fbdev;
952 struct omapfb_mem_region *rg;
953
954 rg = &fbdev->mem_desc.region[plane->idx];
955 memset(mi, 0, sizeof(*mi));
956 mi->size = rg->size;
957 mi->type = rg->type;
958
959 return 0;
960 }
961
962 static int omapfb_set_color_key(struct omapfb_device *fbdev,
963 struct omapfb_color_key *ck)
964 {
965 int r;
966
967 if (!fbdev->ctrl->set_color_key)
968 return -ENODEV;
969
970 omapfb_rqueue_lock(fbdev);
971 r = fbdev->ctrl->set_color_key(ck);
972 omapfb_rqueue_unlock(fbdev);
973
974 return r;
975 }
976
977 static int omapfb_get_color_key(struct omapfb_device *fbdev,
978 struct omapfb_color_key *ck)
979 {
980 int r;
981
982 if (!fbdev->ctrl->get_color_key)
983 return -ENODEV;
984
985 omapfb_rqueue_lock(fbdev);
986 r = fbdev->ctrl->get_color_key(ck);
987 omapfb_rqueue_unlock(fbdev);
988
989 return r;
990 }
991
992 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
993 static int notifier_inited;
994
995 static void omapfb_init_notifier(void)
996 {
997 int i;
998
999 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1000 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
1001 }
1002
1003 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
1004 omapfb_notifier_callback_t callback,
1005 void *callback_data)
1006 {
1007 int r;
1008
1009 if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
1010 return -EINVAL;
1011
1012 if (!notifier_inited) {
1013 omapfb_init_notifier();
1014 notifier_inited = 1;
1015 }
1016
1017 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
1018 unsigned long, void *))callback;
1019 omapfb_nb->data = callback_data;
1020 r = blocking_notifier_chain_register(
1021 &omapfb_client_list[omapfb_nb->plane_idx],
1022 &omapfb_nb->nb);
1023 if (r)
1024 return r;
1025 if (omapfb_dev != NULL &&
1026 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
1027 omapfb_dev->ctrl->bind_client(omapfb_nb);
1028 }
1029
1030 return 0;
1031 }
1032 EXPORT_SYMBOL(omapfb_register_client);
1033
1034 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
1035 {
1036 return blocking_notifier_chain_unregister(
1037 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
1038 }
1039 EXPORT_SYMBOL(omapfb_unregister_client);
1040
1041 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
1042 {
1043 int i;
1044
1045 if (!notifier_inited)
1046 /* no client registered yet */
1047 return;
1048
1049 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1050 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1051 fbdev->fb_info[i]);
1052 }
1053 EXPORT_SYMBOL(omapfb_notify_clients);
1054
1055 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1056 enum omapfb_update_mode mode)
1057 {
1058 int r;
1059
1060 omapfb_rqueue_lock(fbdev);
1061 r = fbdev->ctrl->set_update_mode(mode);
1062 omapfb_rqueue_unlock(fbdev);
1063
1064 return r;
1065 }
1066
1067 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1068 {
1069 int r;
1070
1071 omapfb_rqueue_lock(fbdev);
1072 r = fbdev->ctrl->get_update_mode();
1073 omapfb_rqueue_unlock(fbdev);
1074
1075 return r;
1076 }
1077
1078 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1079 struct omapfb_caps *caps)
1080 {
1081 memset(caps, 0, sizeof(*caps));
1082 fbdev->ctrl->get_caps(plane, caps);
1083 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1084 }
1085
1086 /* For lcd testing */
1087 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1088 {
1089 omapfb_rqueue_lock(fbdev);
1090 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1091 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1092 struct omapfb_update_window win;
1093
1094 memset(&win, 0, sizeof(win));
1095 win.width = 2;
1096 win.height = 2;
1097 win.out_width = 2;
1098 win.out_height = 2;
1099 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
1100 }
1101 omapfb_rqueue_unlock(fbdev);
1102 }
1103 EXPORT_SYMBOL(omapfb_write_first_pixel);
1104
1105 /*
1106 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1107 * here to be accessible by user mode code.
1108 */
1109 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1110 unsigned long arg)
1111 {
1112 struct omapfb_plane_struct *plane = fbi->par;
1113 struct omapfb_device *fbdev = plane->fbdev;
1114 struct fb_ops *ops = fbi->fbops;
1115 union {
1116 struct omapfb_update_window update_window;
1117 struct omapfb_plane_info plane_info;
1118 struct omapfb_mem_info mem_info;
1119 struct omapfb_color_key color_key;
1120 enum omapfb_update_mode update_mode;
1121 struct omapfb_caps caps;
1122 unsigned int mirror;
1123 int plane_out;
1124 int enable_plane;
1125 } p;
1126 int r = 0;
1127
1128 BUG_ON(!ops);
1129 switch (cmd) {
1130 case OMAPFB_MIRROR:
1131 if (get_user(p.mirror, (int __user *)arg))
1132 r = -EFAULT;
1133 else
1134 omapfb_mirror(fbi, p.mirror);
1135 break;
1136 case OMAPFB_SYNC_GFX:
1137 omapfb_sync(fbi);
1138 break;
1139 case OMAPFB_VSYNC:
1140 break;
1141 case OMAPFB_SET_UPDATE_MODE:
1142 if (get_user(p.update_mode, (int __user *)arg))
1143 r = -EFAULT;
1144 else
1145 r = omapfb_set_update_mode(fbdev, p.update_mode);
1146 break;
1147 case OMAPFB_GET_UPDATE_MODE:
1148 p.update_mode = omapfb_get_update_mode(fbdev);
1149 if (put_user(p.update_mode,
1150 (enum omapfb_update_mode __user *)arg))
1151 r = -EFAULT;
1152 break;
1153 case OMAPFB_UPDATE_WINDOW_OLD:
1154 if (copy_from_user(&p.update_window, (void __user *)arg,
1155 sizeof(struct omapfb_update_window_old)))
1156 r = -EFAULT;
1157 else {
1158 struct omapfb_update_window *u = &p.update_window;
1159 u->out_x = u->x;
1160 u->out_y = u->y;
1161 u->out_width = u->width;
1162 u->out_height = u->height;
1163 memset(u->reserved, 0, sizeof(u->reserved));
1164 r = omapfb_update_win(fbi, u);
1165 }
1166 break;
1167 case OMAPFB_UPDATE_WINDOW:
1168 if (copy_from_user(&p.update_window, (void __user *)arg,
1169 sizeof(p.update_window)))
1170 r = -EFAULT;
1171 else
1172 r = omapfb_update_win(fbi, &p.update_window);
1173 break;
1174 case OMAPFB_SETUP_PLANE:
1175 if (copy_from_user(&p.plane_info, (void __user *)arg,
1176 sizeof(p.plane_info)))
1177 r = -EFAULT;
1178 else
1179 r = omapfb_setup_plane(fbi, &p.plane_info);
1180 break;
1181 case OMAPFB_QUERY_PLANE:
1182 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1183 break;
1184 if (copy_to_user((void __user *)arg, &p.plane_info,
1185 sizeof(p.plane_info)))
1186 r = -EFAULT;
1187 break;
1188 case OMAPFB_SETUP_MEM:
1189 if (copy_from_user(&p.mem_info, (void __user *)arg,
1190 sizeof(p.mem_info)))
1191 r = -EFAULT;
1192 else
1193 r = omapfb_setup_mem(fbi, &p.mem_info);
1194 break;
1195 case OMAPFB_QUERY_MEM:
1196 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1197 break;
1198 if (copy_to_user((void __user *)arg, &p.mem_info,
1199 sizeof(p.mem_info)))
1200 r = -EFAULT;
1201 break;
1202 case OMAPFB_SET_COLOR_KEY:
1203 if (copy_from_user(&p.color_key, (void __user *)arg,
1204 sizeof(p.color_key)))
1205 r = -EFAULT;
1206 else
1207 r = omapfb_set_color_key(fbdev, &p.color_key);
1208 break;
1209 case OMAPFB_GET_COLOR_KEY:
1210 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1211 break;
1212 if (copy_to_user((void __user *)arg, &p.color_key,
1213 sizeof(p.color_key)))
1214 r = -EFAULT;
1215 break;
1216 case OMAPFB_GET_CAPS:
1217 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1218 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1219 r = -EFAULT;
1220 break;
1221 case OMAPFB_LCD_TEST:
1222 {
1223 int test_num;
1224
1225 if (get_user(test_num, (int __user *)arg)) {
1226 r = -EFAULT;
1227 break;
1228 }
1229 if (!fbdev->panel->run_test) {
1230 r = -EINVAL;
1231 break;
1232 }
1233 r = fbdev->panel->run_test(fbdev->panel, test_num);
1234 break;
1235 }
1236 case OMAPFB_CTRL_TEST:
1237 {
1238 int test_num;
1239
1240 if (get_user(test_num, (int __user *)arg)) {
1241 r = -EFAULT;
1242 break;
1243 }
1244 if (!fbdev->ctrl->run_test) {
1245 r = -EINVAL;
1246 break;
1247 }
1248 r = fbdev->ctrl->run_test(test_num);
1249 break;
1250 }
1251 default:
1252 r = -EINVAL;
1253 }
1254
1255 return r;
1256 }
1257
1258 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1259 {
1260 struct omapfb_plane_struct *plane = info->par;
1261 struct omapfb_device *fbdev = plane->fbdev;
1262 int r;
1263
1264 omapfb_rqueue_lock(fbdev);
1265 r = fbdev->ctrl->mmap(info, vma);
1266 omapfb_rqueue_unlock(fbdev);
1267
1268 return r;
1269 }
1270
1271 /*
1272 * Callback table for the frame buffer framework. Some of these pointers
1273 * will be changed according to the current setting of fb_info->accel_flags.
1274 */
1275 static struct fb_ops omapfb_ops = {
1276 .owner = THIS_MODULE,
1277 .fb_open = omapfb_open,
1278 .fb_release = omapfb_release,
1279 .fb_setcolreg = omapfb_setcolreg,
1280 .fb_setcmap = omapfb_setcmap,
1281 .fb_fillrect = cfb_fillrect,
1282 .fb_copyarea = cfb_copyarea,
1283 .fb_imageblit = cfb_imageblit,
1284 .fb_blank = omapfb_blank,
1285 .fb_ioctl = omapfb_ioctl,
1286 .fb_check_var = omapfb_check_var,
1287 .fb_set_par = omapfb_set_par,
1288 .fb_rotate = omapfb_rotate,
1289 .fb_pan_display = omapfb_pan_display,
1290 };
1291
1292 /*
1293 * ---------------------------------------------------------------------------
1294 * Sysfs interface
1295 * ---------------------------------------------------------------------------
1296 */
1297 /* omapfbX sysfs entries */
1298 static ssize_t omapfb_show_caps_num(struct device *dev,
1299 struct device_attribute *attr, char *buf)
1300 {
1301 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1302 int plane;
1303 size_t size;
1304 struct omapfb_caps caps;
1305
1306 plane = 0;
1307 size = 0;
1308 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1309 omapfb_get_caps(fbdev, plane, &caps);
1310 size += snprintf(&buf[size], PAGE_SIZE - size,
1311 "plane#%d %#010x %#010x %#010x\n",
1312 plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1313 plane++;
1314 }
1315 return size;
1316 }
1317
1318 static ssize_t omapfb_show_caps_text(struct device *dev,
1319 struct device_attribute *attr, char *buf)
1320 {
1321 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1322 int i;
1323 struct omapfb_caps caps;
1324 int plane;
1325 size_t size;
1326
1327 plane = 0;
1328 size = 0;
1329 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1330 omapfb_get_caps(fbdev, plane, &caps);
1331 size += snprintf(&buf[size], PAGE_SIZE - size,
1332 "plane#%d:\n", plane);
1333 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1334 size < PAGE_SIZE; i++) {
1335 if (ctrl_caps[i].flag & caps.ctrl)
1336 size += snprintf(&buf[size], PAGE_SIZE - size,
1337 " %s\n", ctrl_caps[i].name);
1338 }
1339 size += snprintf(&buf[size], PAGE_SIZE - size,
1340 " plane colors:\n");
1341 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1342 size < PAGE_SIZE; i++) {
1343 if (color_caps[i].flag & caps.plane_color)
1344 size += snprintf(&buf[size], PAGE_SIZE - size,
1345 " %s\n", color_caps[i].name);
1346 }
1347 size += snprintf(&buf[size], PAGE_SIZE - size,
1348 " window colors:\n");
1349 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1350 size < PAGE_SIZE; i++) {
1351 if (color_caps[i].flag & caps.wnd_color)
1352 size += snprintf(&buf[size], PAGE_SIZE - size,
1353 " %s\n", color_caps[i].name);
1354 }
1355
1356 plane++;
1357 }
1358 return size;
1359 }
1360
1361 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1362 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1363
1364 /* panel sysfs entries */
1365 static ssize_t omapfb_show_panel_name(struct device *dev,
1366 struct device_attribute *attr, char *buf)
1367 {
1368 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1369
1370 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1371 }
1372
1373 static ssize_t omapfb_show_bklight_level(struct device *dev,
1374 struct device_attribute *attr,
1375 char *buf)
1376 {
1377 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1378 int r;
1379
1380 if (fbdev->panel->get_bklight_level) {
1381 r = snprintf(buf, PAGE_SIZE, "%d\n",
1382 fbdev->panel->get_bklight_level(fbdev->panel));
1383 } else
1384 r = -ENODEV;
1385 return r;
1386 }
1387
1388 static ssize_t omapfb_store_bklight_level(struct device *dev,
1389 struct device_attribute *attr,
1390 const char *buf, size_t size)
1391 {
1392 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1393 int r;
1394
1395 if (fbdev->panel->set_bklight_level) {
1396 unsigned int level;
1397
1398 if (sscanf(buf, "%10d", &level) == 1) {
1399 r = fbdev->panel->set_bklight_level(fbdev->panel,
1400 level);
1401 } else
1402 r = -EINVAL;
1403 } else
1404 r = -ENODEV;
1405 return r ? r : size;
1406 }
1407
1408 static ssize_t omapfb_show_bklight_max(struct device *dev,
1409 struct device_attribute *attr, char *buf)
1410 {
1411 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1412 int r;
1413
1414 if (fbdev->panel->get_bklight_level) {
1415 r = snprintf(buf, PAGE_SIZE, "%d\n",
1416 fbdev->panel->get_bklight_max(fbdev->panel));
1417 } else
1418 r = -ENODEV;
1419 return r;
1420 }
1421
1422 static struct device_attribute dev_attr_panel_name =
1423 __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1424 static DEVICE_ATTR(backlight_level, 0664,
1425 omapfb_show_bklight_level, omapfb_store_bklight_level);
1426 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1427
1428 static struct attribute *panel_attrs[] = {
1429 &dev_attr_panel_name.attr,
1430 &dev_attr_backlight_level.attr,
1431 &dev_attr_backlight_max.attr,
1432 NULL,
1433 };
1434
1435 static struct attribute_group panel_attr_grp = {
1436 .name = "panel",
1437 .attrs = panel_attrs,
1438 };
1439
1440 /* ctrl sysfs entries */
1441 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1442 struct device_attribute *attr, char *buf)
1443 {
1444 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1445
1446 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1447 }
1448
1449 static struct device_attribute dev_attr_ctrl_name =
1450 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1451
1452 static struct attribute *ctrl_attrs[] = {
1453 &dev_attr_ctrl_name.attr,
1454 NULL,
1455 };
1456
1457 static struct attribute_group ctrl_attr_grp = {
1458 .name = "ctrl",
1459 .attrs = ctrl_attrs,
1460 };
1461
1462 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1463 {
1464 int r;
1465
1466 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1467 goto fail0;
1468
1469 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1470 goto fail1;
1471
1472 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1473 goto fail2;
1474
1475 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1476 goto fail3;
1477
1478 return 0;
1479 fail3:
1480 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1481 fail2:
1482 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1483 fail1:
1484 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1485 fail0:
1486 dev_err(fbdev->dev, "unable to register sysfs interface\n");
1487 return r;
1488 }
1489
1490 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1491 {
1492 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1493 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1494 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1495 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1496 }
1497
1498 /*
1499 * ---------------------------------------------------------------------------
1500 * LDM callbacks
1501 * ---------------------------------------------------------------------------
1502 */
1503 /* Initialize system fb_info object and set the default video mode.
1504 * The frame buffer memory already allocated by lcddma_init
1505 */
1506 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1507 {
1508 struct fb_var_screeninfo *var = &info->var;
1509 struct fb_fix_screeninfo *fix = &info->fix;
1510 int r = 0;
1511
1512 info->fbops = &omapfb_ops;
1513 info->flags = FBINFO_FLAG_DEFAULT;
1514
1515 strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1516
1517 info->pseudo_palette = fbdev->pseudo_palette;
1518
1519 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0;
1520 var->xres = def_vxres;
1521 var->yres = def_vyres;
1522 var->xres_virtual = def_vxres;
1523 var->yres_virtual = def_vyres;
1524 var->rotate = def_rotate;
1525 var->bits_per_pixel = fbdev->panel->bpp;
1526
1527 set_fb_var(info, var);
1528 set_fb_fix(info, 1);
1529
1530 r = fb_alloc_cmap(&info->cmap, 16, 0);
1531 if (r != 0)
1532 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1533
1534 return r;
1535 }
1536
1537 /* Release the fb_info object */
1538 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1539 {
1540 fb_dealloc_cmap(&fbi->cmap);
1541 }
1542
1543 static void planes_cleanup(struct omapfb_device *fbdev)
1544 {
1545 int i;
1546
1547 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1548 if (fbdev->fb_info[i] == NULL)
1549 break;
1550 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1551 framebuffer_release(fbdev->fb_info[i]);
1552 }
1553 }
1554
1555 static int planes_init(struct omapfb_device *fbdev)
1556 {
1557 struct fb_info *fbi;
1558 int i;
1559 int r;
1560
1561 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1562 struct omapfb_plane_struct *plane;
1563 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1564 fbdev->dev);
1565 if (fbi == NULL) {
1566 dev_err(fbdev->dev,
1567 "unable to allocate memory for plane info\n");
1568 planes_cleanup(fbdev);
1569 return -ENOMEM;
1570 }
1571 plane = fbi->par;
1572 plane->idx = i;
1573 plane->fbdev = fbdev;
1574 plane->info.mirror = def_mirror;
1575 fbdev->fb_info[i] = fbi;
1576
1577 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1578 framebuffer_release(fbi);
1579 planes_cleanup(fbdev);
1580 return r;
1581 }
1582 plane->info.out_width = fbi->var.xres;
1583 plane->info.out_height = fbi->var.yres;
1584 }
1585 return 0;
1586 }
1587
1588 /*
1589 * Free driver resources. Can be called to rollback an aborted initialization
1590 * sequence.
1591 */
1592 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1593 {
1594 int i;
1595
1596 switch (state) {
1597 case OMAPFB_ACTIVE:
1598 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1599 unregister_framebuffer(fbdev->fb_info[i]);
1600 case 7:
1601 omapfb_unregister_sysfs(fbdev);
1602 case 6:
1603 fbdev->panel->disable(fbdev->panel);
1604 case 5:
1605 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1606 case 4:
1607 planes_cleanup(fbdev);
1608 case 3:
1609 ctrl_cleanup(fbdev);
1610 case 2:
1611 fbdev->panel->cleanup(fbdev->panel);
1612 case 1:
1613 dev_set_drvdata(fbdev->dev, NULL);
1614 kfree(fbdev);
1615 case 0:
1616 /* nothing to free */
1617 break;
1618 default:
1619 BUG();
1620 }
1621 }
1622
1623 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1624 {
1625 struct omapfb_platform_data *conf;
1626 char name[17];
1627 int i;
1628
1629 conf = fbdev->dev->platform_data;
1630
1631 fbdev->ctrl = NULL;
1632
1633 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1634 name[sizeof(name) - 1] = '\0';
1635
1636 if (strcmp(name, "internal") == 0) {
1637 fbdev->ctrl = fbdev->int_ctrl;
1638 return 0;
1639 }
1640
1641 for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1642 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1643 if (strcmp(ctrls[i]->name, name) == 0) {
1644 fbdev->ctrl = ctrls[i];
1645 break;
1646 }
1647 }
1648
1649 if (fbdev->ctrl == NULL) {
1650 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1651 return -1;
1652 }
1653
1654 return 0;
1655 }
1656
1657 static void check_required_callbacks(struct omapfb_device *fbdev)
1658 {
1659 #define _C(x) (fbdev->ctrl->x != NULL)
1660 #define _P(x) (fbdev->panel->x != NULL)
1661 BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1662 BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1663 _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1664 _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1665 _P(get_caps)));
1666 #undef _P
1667 #undef _C
1668 }
1669
1670 /*
1671 * Called by LDM binding to probe and attach a new device.
1672 * Initialization sequence:
1673 * 1. allocate system omapfb_device structure
1674 * 2. select controller type according to platform configuration
1675 * init LCD panel
1676 * 3. init LCD controller and LCD DMA
1677 * 4. init system fb_info structure for all planes
1678 * 5. setup video mode for first plane and enable it
1679 * 6. enable LCD panel
1680 * 7. register sysfs attributes
1681 * OMAPFB_ACTIVE: register system fb_info structure for all planes
1682 */
1683 static int omapfb_do_probe(struct platform_device *pdev,
1684 struct lcd_panel *panel)
1685 {
1686 struct omapfb_device *fbdev = NULL;
1687 int init_state;
1688 unsigned long phz, hhz, vhz;
1689 unsigned long vram;
1690 int i;
1691 int r = 0;
1692
1693 init_state = 0;
1694
1695 if (pdev->num_resources != 0) {
1696 dev_err(&pdev->dev, "probed for an unknown device\n");
1697 r = -ENODEV;
1698 goto cleanup;
1699 }
1700
1701 if (pdev->dev.platform_data == NULL) {
1702 dev_err(&pdev->dev, "missing platform data\n");
1703 r = -ENOENT;
1704 goto cleanup;
1705 }
1706
1707 fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1708 if (fbdev == NULL) {
1709 dev_err(&pdev->dev,
1710 "unable to allocate memory for device info\n");
1711 r = -ENOMEM;
1712 goto cleanup;
1713 }
1714 init_state++;
1715
1716 fbdev->dev = &pdev->dev;
1717 fbdev->panel = panel;
1718 fbdev->dssdev = &omapdss_device;
1719 platform_set_drvdata(pdev, fbdev);
1720
1721 mutex_init(&fbdev->rqueue_mutex);
1722
1723 #ifdef CONFIG_ARCH_OMAP1
1724 fbdev->int_ctrl = &omap1_int_ctrl;
1725 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1726 fbdev->ext_if = &omap1_ext_if;
1727 #endif
1728 #else /* OMAP2 */
1729 fbdev->int_ctrl = &omap2_int_ctrl;
1730 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1731 fbdev->ext_if = &omap2_ext_if;
1732 #endif
1733 #endif
1734 if (omapfb_find_ctrl(fbdev) < 0) {
1735 dev_err(fbdev->dev,
1736 "LCD controller not found, board not supported\n");
1737 r = -ENODEV;
1738 goto cleanup;
1739 }
1740
1741 r = fbdev->panel->init(fbdev->panel, fbdev);
1742 if (r)
1743 goto cleanup;
1744
1745 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1746
1747 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1748 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1749
1750 init_state++;
1751
1752 r = ctrl_init(fbdev);
1753 if (r)
1754 goto cleanup;
1755 if (fbdev->ctrl->mmap != NULL)
1756 omapfb_ops.fb_mmap = omapfb_mmap;
1757 init_state++;
1758
1759 check_required_callbacks(fbdev);
1760
1761 r = planes_init(fbdev);
1762 if (r)
1763 goto cleanup;
1764 init_state++;
1765
1766 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1767 /* Set DMA priority for EMIFF access to highest */
1768 if (cpu_class_is_omap1())
1769 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1770 #endif
1771
1772 r = ctrl_change_mode(fbdev->fb_info[0]);
1773 if (r) {
1774 dev_err(fbdev->dev, "mode setting failed\n");
1775 goto cleanup;
1776 }
1777
1778 /* GFX plane is enabled by default */
1779 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1780 if (r)
1781 goto cleanup;
1782
1783 omapfb_set_update_mode(fbdev, manual_update ?
1784 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1785 init_state++;
1786
1787 r = fbdev->panel->enable(fbdev->panel);
1788 if (r)
1789 goto cleanup;
1790 init_state++;
1791
1792 r = omapfb_register_sysfs(fbdev);
1793 if (r)
1794 goto cleanup;
1795 init_state++;
1796
1797 vram = 0;
1798 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1799 r = register_framebuffer(fbdev->fb_info[i]);
1800 if (r != 0) {
1801 dev_err(fbdev->dev,
1802 "registering framebuffer %d failed\n", i);
1803 goto cleanup;
1804 }
1805 vram += fbdev->mem_desc.region[i].size;
1806 }
1807
1808 fbdev->state = OMAPFB_ACTIVE;
1809
1810 panel = fbdev->panel;
1811 phz = panel->pixel_clock * 1000;
1812 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1813 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1814
1815 omapfb_dev = fbdev;
1816
1817 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1818 vram, fbdev->mem_desc.region_cnt);
1819 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1820 "vfreq %lu.%lu Hz\n",
1821 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1822
1823 return 0;
1824
1825 cleanup:
1826 omapfb_free_resources(fbdev, init_state);
1827
1828 return r;
1829 }
1830
1831 static int omapfb_probe(struct platform_device *pdev)
1832 {
1833 int r;
1834
1835 BUG_ON(fbdev_pdev != NULL);
1836
1837 r = platform_device_register(&omapdss_device);
1838 if (r) {
1839 dev_err(&pdev->dev, "can't register omapdss device\n");
1840 return r;
1841 }
1842
1843 /* Delay actual initialization until the LCD is registered */
1844 fbdev_pdev = pdev;
1845 if (fbdev_panel != NULL)
1846 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1847 return 0;
1848 }
1849
1850 void omapfb_register_panel(struct lcd_panel *panel)
1851 {
1852 BUG_ON(fbdev_panel != NULL);
1853
1854 fbdev_panel = panel;
1855 if (fbdev_pdev != NULL)
1856 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1857 }
1858
1859 /* Called when the device is being detached from the driver */
1860 static int omapfb_remove(struct platform_device *pdev)
1861 {
1862 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1863 enum omapfb_state saved_state = fbdev->state;
1864
1865 /* FIXME: wait till completion of pending events */
1866
1867 fbdev->state = OMAPFB_DISABLED;
1868 omapfb_free_resources(fbdev, saved_state);
1869
1870 platform_device_unregister(&omapdss_device);
1871 fbdev->dssdev = NULL;
1872
1873 return 0;
1874 }
1875
1876 /* PM suspend */
1877 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1878 {
1879 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1880
1881 if (fbdev != NULL)
1882 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1883 return 0;
1884 }
1885
1886 /* PM resume */
1887 static int omapfb_resume(struct platform_device *pdev)
1888 {
1889 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1890
1891 if (fbdev != NULL)
1892 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1893 return 0;
1894 }
1895
1896 static struct platform_driver omapfb_driver = {
1897 .probe = omapfb_probe,
1898 .remove = omapfb_remove,
1899 .suspend = omapfb_suspend,
1900 .resume = omapfb_resume,
1901 .driver = {
1902 .name = MODULE_NAME,
1903 .owner = THIS_MODULE,
1904 },
1905 };
1906
1907 #ifndef MODULE
1908
1909 /* Process kernel command line parameters */
1910 static int __init omapfb_setup(char *options)
1911 {
1912 char *this_opt = NULL;
1913 int r = 0;
1914
1915 pr_debug("omapfb: options %s\n", options);
1916
1917 if (!options || !*options)
1918 return 0;
1919
1920 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1921 if (!strncmp(this_opt, "accel", 5))
1922 def_accel = 1;
1923 else if (!strncmp(this_opt, "vram:", 5)) {
1924 char *suffix;
1925 unsigned long vram;
1926 vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1927 switch (suffix[0]) {
1928 case '\0':
1929 break;
1930 case 'm':
1931 case 'M':
1932 vram *= 1024;
1933 /* Fall through */
1934 case 'k':
1935 case 'K':
1936 vram *= 1024;
1937 break;
1938 default:
1939 pr_debug("omapfb: invalid vram suffix %c\n",
1940 suffix[0]);
1941 r = -1;
1942 }
1943 def_vram[def_vram_cnt++] = vram;
1944 }
1945 else if (!strncmp(this_opt, "vxres:", 6))
1946 def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1947 else if (!strncmp(this_opt, "vyres:", 6))
1948 def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1949 else if (!strncmp(this_opt, "rotate:", 7))
1950 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1951 else if (!strncmp(this_opt, "mirror:", 7))
1952 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1953 else if (!strncmp(this_opt, "manual_update", 13))
1954 manual_update = 1;
1955 else {
1956 pr_debug("omapfb: invalid option\n");
1957 r = -1;
1958 }
1959 }
1960
1961 return r;
1962 }
1963
1964 #endif
1965
1966 /* Register both the driver and the device */
1967 static int __init omapfb_init(void)
1968 {
1969 #ifndef MODULE
1970 char *option;
1971
1972 if (fb_get_options("omapfb", &option))
1973 return -ENODEV;
1974 omapfb_setup(option);
1975 #endif
1976 /* Register the driver with LDM */
1977 if (platform_driver_register(&omapfb_driver)) {
1978 pr_debug("failed to register omapfb driver\n");
1979 return -ENODEV;
1980 }
1981
1982 return 0;
1983 }
1984
1985 static void __exit omapfb_cleanup(void)
1986 {
1987 platform_driver_unregister(&omapfb_driver);
1988 }
1989
1990 module_param_named(accel, def_accel, uint, 0664);
1991 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1992 module_param_named(vxres, def_vxres, long, 0664);
1993 module_param_named(vyres, def_vyres, long, 0664);
1994 module_param_named(rotate, def_rotate, uint, 0664);
1995 module_param_named(mirror, def_mirror, uint, 0664);
1996 module_param_named(manual_update, manual_update, bool, 0664);
1997
1998 module_init(omapfb_init);
1999 module_exit(omapfb_cleanup);
2000
2001 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
2002 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
2003 MODULE_LICENSE("GPL");
linux-next