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Linux 4.18.10
[linux/fpc-iii.git] / drivers / video / fbdev / omap / omapfb_main.c
blob1c75f4806ed3bda367b1666e98558d9f6d679f00
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 const 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 const 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 if (fbdev->panel->enable)
341 fbdev->panel->enable(fbdev->panel);
342 fbdev->state = OMAPFB_ACTIVE;
343 if (fbdev->ctrl->get_update_mode() ==
344 OMAPFB_MANUAL_UPDATE)
345 do_update = 1;
346 }
347 break;
348 case FB_BLANK_POWERDOWN:
349 if (fbdev->state == OMAPFB_ACTIVE) {
350 if (fbdev->panel->disable)
351 fbdev->panel->disable(fbdev->panel);
352 if (fbdev->ctrl->suspend)
353 fbdev->ctrl->suspend();
354 fbdev->state = OMAPFB_SUSPENDED;
355 }
356 break;
357 default:
358 r = -EINVAL;
359 }
360 omapfb_rqueue_unlock(fbdev);
361
362 if (r == 0 && do_update)
363 r = omapfb_update_full_screen(fbi);
364
365 return r;
366 }
367
368 static void omapfb_sync(struct fb_info *fbi)
369 {
370 struct omapfb_plane_struct *plane = fbi->par;
371 struct omapfb_device *fbdev = plane->fbdev;
372
373 omapfb_rqueue_lock(fbdev);
374 if (fbdev->ctrl->sync)
375 fbdev->ctrl->sync();
376 omapfb_rqueue_unlock(fbdev);
377 }
378
379 /*
380 * Set fb_info.fix fields and also updates fbdev.
381 * When calling this fb_info.var must be set up already.
382 */
383 static void set_fb_fix(struct fb_info *fbi, int from_init)
384 {
385 struct fb_fix_screeninfo *fix = &fbi->fix;
386 struct fb_var_screeninfo *var = &fbi->var;
387 struct omapfb_plane_struct *plane = fbi->par;
388 struct omapfb_mem_region *rg;
389 int bpp;
390
391 rg = &plane->fbdev->mem_desc.region[plane->idx];
392 fbi->screen_base = rg->vaddr;
393
394 if (!from_init) {
395 mutex_lock(&fbi->mm_lock);
396 fix->smem_start = rg->paddr;
397 fix->smem_len = rg->size;
398 mutex_unlock(&fbi->mm_lock);
399 } else {
400 fix->smem_start = rg->paddr;
401 fix->smem_len = rg->size;
402 }
403
404 fix->type = FB_TYPE_PACKED_PIXELS;
405 bpp = var->bits_per_pixel;
406 if (var->nonstd)
407 fix->visual = FB_VISUAL_PSEUDOCOLOR;
408 else switch (var->bits_per_pixel) {
409 case 16:
410 case 12:
411 fix->visual = FB_VISUAL_TRUECOLOR;
412 /* 12bpp is stored in 16 bits */
413 bpp = 16;
414 break;
415 case 1:
416 case 2:
417 case 4:
418 case 8:
419 fix->visual = FB_VISUAL_PSEUDOCOLOR;
420 break;
421 }
422 fix->accel = FB_ACCEL_OMAP1610;
423 fix->line_length = var->xres_virtual * bpp / 8;
424 }
425
426 static int set_color_mode(struct omapfb_plane_struct *plane,
427 struct fb_var_screeninfo *var)
428 {
429 switch (var->nonstd) {
430 case 0:
431 break;
432 case OMAPFB_COLOR_YUV422:
433 var->bits_per_pixel = 16;
434 plane->color_mode = var->nonstd;
435 return 0;
436 case OMAPFB_COLOR_YUV420:
437 var->bits_per_pixel = 12;
438 plane->color_mode = var->nonstd;
439 return 0;
440 case OMAPFB_COLOR_YUY422:
441 var->bits_per_pixel = 16;
442 plane->color_mode = var->nonstd;
443 return 0;
444 default:
445 return -EINVAL;
446 }
447
448 switch (var->bits_per_pixel) {
449 case 1:
450 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
451 return 0;
452 case 2:
453 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
454 return 0;
455 case 4:
456 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
457 return 0;
458 case 8:
459 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
460 return 0;
461 case 12:
462 var->bits_per_pixel = 16;
463 case 16:
464 if (plane->fbdev->panel->bpp == 12)
465 plane->color_mode = OMAPFB_COLOR_RGB444;
466 else
467 plane->color_mode = OMAPFB_COLOR_RGB565;
468 return 0;
469 default:
470 return -EINVAL;
471 }
472 }
473
474 /*
475 * Check the values in var against our capabilities and in case of out of
476 * bound values try to adjust them.
477 */
478 static int set_fb_var(struct fb_info *fbi,
479 struct fb_var_screeninfo *var)
480 {
481 int bpp;
482 unsigned long max_frame_size;
483 unsigned long line_size;
484 int xres_min, xres_max;
485 int yres_min, yres_max;
486 struct omapfb_plane_struct *plane = fbi->par;
487 struct omapfb_device *fbdev = plane->fbdev;
488 struct lcd_panel *panel = fbdev->panel;
489
490 if (set_color_mode(plane, var) < 0)
491 return -EINVAL;
492
493 bpp = var->bits_per_pixel;
494 if (plane->color_mode == OMAPFB_COLOR_RGB444)
495 bpp = 16;
496
497 switch (var->rotate) {
498 case 0:
499 case 180:
500 xres_min = OMAPFB_PLANE_XRES_MIN;
501 xres_max = panel->x_res;
502 yres_min = OMAPFB_PLANE_YRES_MIN;
503 yres_max = panel->y_res;
504 if (cpu_is_omap15xx()) {
505 var->xres = panel->x_res;
506 var->yres = panel->y_res;
507 }
508 break;
509 case 90:
510 case 270:
511 xres_min = OMAPFB_PLANE_YRES_MIN;
512 xres_max = panel->y_res;
513 yres_min = OMAPFB_PLANE_XRES_MIN;
514 yres_max = panel->x_res;
515 if (cpu_is_omap15xx()) {
516 var->xres = panel->y_res;
517 var->yres = panel->x_res;
518 }
519 break;
520 default:
521 return -EINVAL;
522 }
523
524 if (var->xres < xres_min)
525 var->xres = xres_min;
526 if (var->yres < yres_min)
527 var->yres = yres_min;
528 if (var->xres > xres_max)
529 var->xres = xres_max;
530 if (var->yres > yres_max)
531 var->yres = yres_max;
532
533 if (var->xres_virtual < var->xres)
534 var->xres_virtual = var->xres;
535 if (var->yres_virtual < var->yres)
536 var->yres_virtual = var->yres;
537 max_frame_size = fbdev->mem_desc.region[plane->idx].size;
538 line_size = var->xres_virtual * bpp / 8;
539 if (line_size * var->yres_virtual > max_frame_size) {
540 /* Try to keep yres_virtual first */
541 line_size = max_frame_size / var->yres_virtual;
542 var->xres_virtual = line_size * 8 / bpp;
543 if (var->xres_virtual < var->xres) {
544 /* Still doesn't fit. Shrink yres_virtual too */
545 var->xres_virtual = var->xres;
546 line_size = var->xres * bpp / 8;
547 var->yres_virtual = max_frame_size / line_size;
548 }
549 /* Recheck this, as the virtual size changed. */
550 if (var->xres_virtual < var->xres)
551 var->xres = var->xres_virtual;
552 if (var->yres_virtual < var->yres)
553 var->yres = var->yres_virtual;
554 if (var->xres < xres_min || var->yres < yres_min)
555 return -EINVAL;
556 }
557 if (var->xres + var->xoffset > var->xres_virtual)
558 var->xoffset = var->xres_virtual - var->xres;
559 if (var->yres + var->yoffset > var->yres_virtual)
560 var->yoffset = var->yres_virtual - var->yres;
561
562 if (plane->color_mode == OMAPFB_COLOR_RGB444) {
563 var->red.offset = 8; var->red.length = 4;
564 var->red.msb_right = 0;
565 var->green.offset = 4; var->green.length = 4;
566 var->green.msb_right = 0;
567 var->blue.offset = 0; var->blue.length = 4;
568 var->blue.msb_right = 0;
569 } else {
570 var->red.offset = 11; var->red.length = 5;
571 var->red.msb_right = 0;
572 var->green.offset = 5; var->green.length = 6;
573 var->green.msb_right = 0;
574 var->blue.offset = 0; var->blue.length = 5;
575 var->blue.msb_right = 0;
576 }
577
578 var->height = -1;
579 var->width = -1;
580 var->grayscale = 0;
581
582 /* pixclock in ps, the rest in pixclock */
583 var->pixclock = 10000000 / (panel->pixel_clock / 100);
584 var->left_margin = panel->hfp;
585 var->right_margin = panel->hbp;
586 var->upper_margin = panel->vfp;
587 var->lower_margin = panel->vbp;
588 var->hsync_len = panel->hsw;
589 var->vsync_len = panel->vsw;
590
591 /* TODO: get these from panel->config */
592 var->vmode = FB_VMODE_NONINTERLACED;
593 var->sync = 0;
594
595 return 0;
596 }
597
598
599 /*
600 * Set new x,y offsets in the virtual display for the visible area and switch
601 * to the new mode.
602 */
603 static int omapfb_pan_display(struct fb_var_screeninfo *var,
604 struct fb_info *fbi)
605 {
606 struct omapfb_plane_struct *plane = fbi->par;
607 struct omapfb_device *fbdev = plane->fbdev;
608 int r = 0;
609
610 omapfb_rqueue_lock(fbdev);
611 if (var->xoffset != fbi->var.xoffset ||
612 var->yoffset != fbi->var.yoffset) {
613 struct fb_var_screeninfo *new_var = &fbdev->new_var;
614
615 memcpy(new_var, &fbi->var, sizeof(*new_var));
616 new_var->xoffset = var->xoffset;
617 new_var->yoffset = var->yoffset;
618 if (set_fb_var(fbi, new_var))
619 r = -EINVAL;
620 else {
621 memcpy(&fbi->var, new_var, sizeof(*new_var));
622 ctrl_change_mode(fbi);
623 }
624 }
625 omapfb_rqueue_unlock(fbdev);
626
627 return r;
628 }
629
630 /* Set mirror to vertical axis and switch to the new mode. */
631 static int omapfb_mirror(struct fb_info *fbi, int mirror)
632 {
633 struct omapfb_plane_struct *plane = fbi->par;
634 struct omapfb_device *fbdev = plane->fbdev;
635 int r = 0;
636
637 omapfb_rqueue_lock(fbdev);
638 mirror = mirror ? 1 : 0;
639 if (cpu_is_omap15xx())
640 r = -EINVAL;
641 else if (mirror != plane->info.mirror) {
642 plane->info.mirror = mirror;
643 r = ctrl_change_mode(fbi);
644 }
645 omapfb_rqueue_unlock(fbdev);
646
647 return r;
648 }
649
650 /*
651 * Check values in var, try to adjust them in case of out of bound values if
652 * possible, or return error.
653 */
654 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
655 {
656 struct omapfb_plane_struct *plane = fbi->par;
657 struct omapfb_device *fbdev = plane->fbdev;
658 int r;
659
660 omapfb_rqueue_lock(fbdev);
661 if (fbdev->ctrl->sync != NULL)
662 fbdev->ctrl->sync();
663 r = set_fb_var(fbi, var);
664 omapfb_rqueue_unlock(fbdev);
665
666 return r;
667 }
668
669 /*
670 * Switch to a new mode. The parameters for it has been check already by
671 * omapfb_check_var.
672 */
673 static int omapfb_set_par(struct fb_info *fbi)
674 {
675 struct omapfb_plane_struct *plane = fbi->par;
676 struct omapfb_device *fbdev = plane->fbdev;
677 int r = 0;
678
679 omapfb_rqueue_lock(fbdev);
680 set_fb_fix(fbi, 0);
681 r = ctrl_change_mode(fbi);
682 omapfb_rqueue_unlock(fbdev);
683
684 return r;
685 }
686
687 int omapfb_update_window_async(struct fb_info *fbi,
688 struct omapfb_update_window *win,
689 void (*callback)(void *),
690 void *callback_data)
691 {
692 int xres, yres;
693 struct omapfb_plane_struct *plane = fbi->par;
694 struct omapfb_device *fbdev = plane->fbdev;
695 struct fb_var_screeninfo *var = &fbi->var;
696
697 switch (var->rotate) {
698 case 0:
699 case 180:
700 xres = fbdev->panel->x_res;
701 yres = fbdev->panel->y_res;
702 break;
703 case 90:
704 case 270:
705 xres = fbdev->panel->y_res;
706 yres = fbdev->panel->x_res;
707 break;
708 default:
709 return -EINVAL;
710 }
711
712 if (win->x >= xres || win->y >= yres ||
713 win->out_x > xres || win->out_y > yres)
714 return -EINVAL;
715
716 if (!fbdev->ctrl->update_window ||
717 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
718 return -ENODEV;
719
720 if (win->x + win->width > xres)
721 win->width = xres - win->x;
722 if (win->y + win->height > yres)
723 win->height = yres - win->y;
724 if (win->out_x + win->out_width > xres)
725 win->out_width = xres - win->out_x;
726 if (win->out_y + win->out_height > yres)
727 win->out_height = yres - win->out_y;
728 if (!win->width || !win->height || !win->out_width || !win->out_height)
729 return 0;
730
731 return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
732 }
733 EXPORT_SYMBOL(omapfb_update_window_async);
734
735 static int omapfb_update_win(struct fb_info *fbi,
736 struct omapfb_update_window *win)
737 {
738 struct omapfb_plane_struct *plane = fbi->par;
739 int ret;
740
741 omapfb_rqueue_lock(plane->fbdev);
742 ret = omapfb_update_window_async(fbi, win, NULL, NULL);
743 omapfb_rqueue_unlock(plane->fbdev);
744
745 return ret;
746 }
747
748 static int omapfb_update_full_screen(struct fb_info *fbi)
749 {
750 struct omapfb_plane_struct *plane = fbi->par;
751 struct omapfb_device *fbdev = plane->fbdev;
752 struct omapfb_update_window win;
753 int r;
754
755 if (!fbdev->ctrl->update_window ||
756 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
757 return -ENODEV;
758
759 win.x = 0;
760 win.y = 0;
761 win.width = fbi->var.xres;
762 win.height = fbi->var.yres;
763 win.out_x = 0;
764 win.out_y = 0;
765 win.out_width = fbi->var.xres;
766 win.out_height = fbi->var.yres;
767 win.format = 0;
768
769 omapfb_rqueue_lock(fbdev);
770 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
771 omapfb_rqueue_unlock(fbdev);
772
773 return r;
774 }
775
776 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
777 {
778 struct omapfb_plane_struct *plane = fbi->par;
779 struct omapfb_device *fbdev = plane->fbdev;
780 struct lcd_panel *panel = fbdev->panel;
781 struct omapfb_plane_info old_info;
782 int r = 0;
783
784 if (pi->pos_x + pi->out_width > panel->x_res ||
785 pi->pos_y + pi->out_height > panel->y_res)
786 return -EINVAL;
787
788 omapfb_rqueue_lock(fbdev);
789 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
790 /*
791 * This plane's memory was freed, can't enable it
792 * until it's reallocated.
793 */
794 r = -EINVAL;
795 goto out;
796 }
797 old_info = plane->info;
798 plane->info = *pi;
799 if (pi->enabled) {
800 r = ctrl_change_mode(fbi);
801 if (r < 0) {
802 plane->info = old_info;
803 goto out;
804 }
805 }
806 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
807 if (r < 0) {
808 plane->info = old_info;
809 goto out;
810 }
811 out:
812 omapfb_rqueue_unlock(fbdev);
813 return r;
814 }
815
816 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
817 {
818 struct omapfb_plane_struct *plane = fbi->par;
819
820 *pi = plane->info;
821 return 0;
822 }
823
824 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
825 {
826 struct omapfb_plane_struct *plane = fbi->par;
827 struct omapfb_device *fbdev = plane->fbdev;
828 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
829 size_t size;
830 int r = 0;
831
832 if (fbdev->ctrl->setup_mem == NULL)
833 return -ENODEV;
834 if (mi->type != OMAPFB_MEMTYPE_SDRAM)
835 return -EINVAL;
836
837 size = PAGE_ALIGN(mi->size);
838 omapfb_rqueue_lock(fbdev);
839 if (plane->info.enabled) {
840 r = -EBUSY;
841 goto out;
842 }
843 if (rg->size != size || rg->type != mi->type) {
844 struct fb_var_screeninfo *new_var = &fbdev->new_var;
845 unsigned long old_size = rg->size;
846 u8 old_type = rg->type;
847 unsigned long paddr;
848
849 rg->size = size;
850 rg->type = mi->type;
851 /*
852 * size == 0 is a special case, for which we
853 * don't check / adjust the screen parameters.
854 * This isn't a problem since the plane can't
855 * be reenabled unless its size is > 0.
856 */
857 if (old_size != size && size) {
858 if (size) {
859 memcpy(new_var, &fbi->var, sizeof(*new_var));
860 r = set_fb_var(fbi, new_var);
861 if (r < 0)
862 goto out;
863 }
864 }
865
866 if (fbdev->ctrl->sync)
867 fbdev->ctrl->sync();
868 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
869 if (r < 0) {
870 /* Revert changes. */
871 rg->size = old_size;
872 rg->type = old_type;
873 goto out;
874 }
875 rg->paddr = paddr;
876
877 if (old_size != size) {
878 if (size) {
879 memcpy(&fbi->var, new_var, sizeof(fbi->var));
880 set_fb_fix(fbi, 0);
881 } else {
882 /*
883 * Set these explicitly to indicate that the
884 * plane memory is dealloce'd, the other
885 * screen parameters in var / fix are invalid.
886 */
887 mutex_lock(&fbi->mm_lock);
888 fbi->fix.smem_start = 0;
889 fbi->fix.smem_len = 0;
890 mutex_unlock(&fbi->mm_lock);
891 }
892 }
893 }
894 out:
895 omapfb_rqueue_unlock(fbdev);
896
897 return r;
898 }
899
900 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
901 {
902 struct omapfb_plane_struct *plane = fbi->par;
903 struct omapfb_device *fbdev = plane->fbdev;
904 struct omapfb_mem_region *rg;
905
906 rg = &fbdev->mem_desc.region[plane->idx];
907 memset(mi, 0, sizeof(*mi));
908 mi->size = rg->size;
909 mi->type = rg->type;
910
911 return 0;
912 }
913
914 static int omapfb_set_color_key(struct omapfb_device *fbdev,
915 struct omapfb_color_key *ck)
916 {
917 int r;
918
919 if (!fbdev->ctrl->set_color_key)
920 return -ENODEV;
921
922 omapfb_rqueue_lock(fbdev);
923 r = fbdev->ctrl->set_color_key(ck);
924 omapfb_rqueue_unlock(fbdev);
925
926 return r;
927 }
928
929 static int omapfb_get_color_key(struct omapfb_device *fbdev,
930 struct omapfb_color_key *ck)
931 {
932 int r;
933
934 if (!fbdev->ctrl->get_color_key)
935 return -ENODEV;
936
937 omapfb_rqueue_lock(fbdev);
938 r = fbdev->ctrl->get_color_key(ck);
939 omapfb_rqueue_unlock(fbdev);
940
941 return r;
942 }
943
944 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
945 static int notifier_inited;
946
947 static void omapfb_init_notifier(void)
948 {
949 int i;
950
951 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
952 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
953 }
954
955 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
956 omapfb_notifier_callback_t callback,
957 void *callback_data)
958 {
959 int r;
960
961 if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM)
962 return -EINVAL;
963
964 if (!notifier_inited) {
965 omapfb_init_notifier();
966 notifier_inited = 1;
967 }
968
969 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
970 unsigned long, void *))callback;
971 omapfb_nb->data = callback_data;
972 r = blocking_notifier_chain_register(
973 &omapfb_client_list[omapfb_nb->plane_idx],
974 &omapfb_nb->nb);
975 if (r)
976 return r;
977 if (omapfb_dev != NULL &&
978 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
979 omapfb_dev->ctrl->bind_client(omapfb_nb);
980 }
981
982 return 0;
983 }
984 EXPORT_SYMBOL(omapfb_register_client);
985
986 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
987 {
988 return blocking_notifier_chain_unregister(
989 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
990 }
991 EXPORT_SYMBOL(omapfb_unregister_client);
992
993 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
994 {
995 int i;
996
997 if (!notifier_inited)
998 /* no client registered yet */
999 return;
1000
1001 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1002 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1003 fbdev->fb_info[i]);
1004 }
1005 EXPORT_SYMBOL(omapfb_notify_clients);
1006
1007 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1008 enum omapfb_update_mode mode)
1009 {
1010 int r;
1011
1012 omapfb_rqueue_lock(fbdev);
1013 r = fbdev->ctrl->set_update_mode(mode);
1014 omapfb_rqueue_unlock(fbdev);
1015
1016 return r;
1017 }
1018
1019 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1020 {
1021 int r;
1022
1023 omapfb_rqueue_lock(fbdev);
1024 r = fbdev->ctrl->get_update_mode();
1025 omapfb_rqueue_unlock(fbdev);
1026
1027 return r;
1028 }
1029
1030 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1031 struct omapfb_caps *caps)
1032 {
1033 memset(caps, 0, sizeof(*caps));
1034 fbdev->ctrl->get_caps(plane, caps);
1035 if (fbdev->panel->get_caps)
1036 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1037 }
1038
1039 /* For lcd testing */
1040 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1041 {
1042 omapfb_rqueue_lock(fbdev);
1043 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1044 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1045 struct omapfb_update_window win;
1046
1047 memset(&win, 0, sizeof(win));
1048 win.width = 2;
1049 win.height = 2;
1050 win.out_width = 2;
1051 win.out_height = 2;
1052 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
1053 }
1054 omapfb_rqueue_unlock(fbdev);
1055 }
1056 EXPORT_SYMBOL(omapfb_write_first_pixel);
1057
1058 /*
1059 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1060 * here to be accessible by user mode code.
1061 */
1062 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1063 unsigned long arg)
1064 {
1065 struct omapfb_plane_struct *plane = fbi->par;
1066 struct omapfb_device *fbdev = plane->fbdev;
1067 struct fb_ops *ops = fbi->fbops;
1068 union {
1069 struct omapfb_update_window update_window;
1070 struct omapfb_plane_info plane_info;
1071 struct omapfb_mem_info mem_info;
1072 struct omapfb_color_key color_key;
1073 enum omapfb_update_mode update_mode;
1074 struct omapfb_caps caps;
1075 unsigned int mirror;
1076 int plane_out;
1077 int enable_plane;
1078 } p;
1079 int r = 0;
1080
1081 BUG_ON(!ops);
1082 switch (cmd) {
1083 case OMAPFB_MIRROR:
1084 if (get_user(p.mirror, (int __user *)arg))
1085 r = -EFAULT;
1086 else
1087 omapfb_mirror(fbi, p.mirror);
1088 break;
1089 case OMAPFB_SYNC_GFX:
1090 omapfb_sync(fbi);
1091 break;
1092 case OMAPFB_VSYNC:
1093 break;
1094 case OMAPFB_SET_UPDATE_MODE:
1095 if (get_user(p.update_mode, (int __user *)arg))
1096 r = -EFAULT;
1097 else
1098 r = omapfb_set_update_mode(fbdev, p.update_mode);
1099 break;
1100 case OMAPFB_GET_UPDATE_MODE:
1101 p.update_mode = omapfb_get_update_mode(fbdev);
1102 if (put_user(p.update_mode,
1103 (enum omapfb_update_mode __user *)arg))
1104 r = -EFAULT;
1105 break;
1106 case OMAPFB_UPDATE_WINDOW_OLD:
1107 if (copy_from_user(&p.update_window, (void __user *)arg,
1108 sizeof(struct omapfb_update_window_old)))
1109 r = -EFAULT;
1110 else {
1111 struct omapfb_update_window *u = &p.update_window;
1112 u->out_x = u->x;
1113 u->out_y = u->y;
1114 u->out_width = u->width;
1115 u->out_height = u->height;
1116 memset(u->reserved, 0, sizeof(u->reserved));
1117 r = omapfb_update_win(fbi, u);
1118 }
1119 break;
1120 case OMAPFB_UPDATE_WINDOW:
1121 if (copy_from_user(&p.update_window, (void __user *)arg,
1122 sizeof(p.update_window)))
1123 r = -EFAULT;
1124 else
1125 r = omapfb_update_win(fbi, &p.update_window);
1126 break;
1127 case OMAPFB_SETUP_PLANE:
1128 if (copy_from_user(&p.plane_info, (void __user *)arg,
1129 sizeof(p.plane_info)))
1130 r = -EFAULT;
1131 else
1132 r = omapfb_setup_plane(fbi, &p.plane_info);
1133 break;
1134 case OMAPFB_QUERY_PLANE:
1135 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1136 break;
1137 if (copy_to_user((void __user *)arg, &p.plane_info,
1138 sizeof(p.plane_info)))
1139 r = -EFAULT;
1140 break;
1141 case OMAPFB_SETUP_MEM:
1142 if (copy_from_user(&p.mem_info, (void __user *)arg,
1143 sizeof(p.mem_info)))
1144 r = -EFAULT;
1145 else
1146 r = omapfb_setup_mem(fbi, &p.mem_info);
1147 break;
1148 case OMAPFB_QUERY_MEM:
1149 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1150 break;
1151 if (copy_to_user((void __user *)arg, &p.mem_info,
1152 sizeof(p.mem_info)))
1153 r = -EFAULT;
1154 break;
1155 case OMAPFB_SET_COLOR_KEY:
1156 if (copy_from_user(&p.color_key, (void __user *)arg,
1157 sizeof(p.color_key)))
1158 r = -EFAULT;
1159 else
1160 r = omapfb_set_color_key(fbdev, &p.color_key);
1161 break;
1162 case OMAPFB_GET_COLOR_KEY:
1163 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1164 break;
1165 if (copy_to_user((void __user *)arg, &p.color_key,
1166 sizeof(p.color_key)))
1167 r = -EFAULT;
1168 break;
1169 case OMAPFB_GET_CAPS:
1170 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1171 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1172 r = -EFAULT;
1173 break;
1174 case OMAPFB_LCD_TEST:
1175 {
1176 int test_num;
1177
1178 if (get_user(test_num, (int __user *)arg)) {
1179 r = -EFAULT;
1180 break;
1181 }
1182 if (!fbdev->panel->run_test) {
1183 r = -EINVAL;
1184 break;
1185 }
1186 r = fbdev->panel->run_test(fbdev->panel, test_num);
1187 break;
1188 }
1189 case OMAPFB_CTRL_TEST:
1190 {
1191 int test_num;
1192
1193 if (get_user(test_num, (int __user *)arg)) {
1194 r = -EFAULT;
1195 break;
1196 }
1197 if (!fbdev->ctrl->run_test) {
1198 r = -EINVAL;
1199 break;
1200 }
1201 r = fbdev->ctrl->run_test(test_num);
1202 break;
1203 }
1204 default:
1205 r = -EINVAL;
1206 }
1207
1208 return r;
1209 }
1210
1211 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1212 {
1213 struct omapfb_plane_struct *plane = info->par;
1214 struct omapfb_device *fbdev = plane->fbdev;
1215 int r;
1216
1217 omapfb_rqueue_lock(fbdev);
1218 r = fbdev->ctrl->mmap(info, vma);
1219 omapfb_rqueue_unlock(fbdev);
1220
1221 return r;
1222 }
1223
1224 /*
1225 * Callback table for the frame buffer framework. Some of these pointers
1226 * will be changed according to the current setting of fb_info->accel_flags.
1227 */
1228 static struct fb_ops omapfb_ops = {
1229 .owner = THIS_MODULE,
1230 .fb_open = omapfb_open,
1231 .fb_release = omapfb_release,
1232 .fb_setcolreg = omapfb_setcolreg,
1233 .fb_setcmap = omapfb_setcmap,
1234 .fb_fillrect = cfb_fillrect,
1235 .fb_copyarea = cfb_copyarea,
1236 .fb_imageblit = cfb_imageblit,
1237 .fb_blank = omapfb_blank,
1238 .fb_ioctl = omapfb_ioctl,
1239 .fb_check_var = omapfb_check_var,
1240 .fb_set_par = omapfb_set_par,
1241 .fb_pan_display = omapfb_pan_display,
1242 };
1243
1244 /*
1245 * ---------------------------------------------------------------------------
1246 * Sysfs interface
1247 * ---------------------------------------------------------------------------
1248 */
1249 /* omapfbX sysfs entries */
1250 static ssize_t omapfb_show_caps_num(struct device *dev,
1251 struct device_attribute *attr, char *buf)
1252 {
1253 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1254 int plane;
1255 size_t size;
1256 struct omapfb_caps caps;
1257
1258 plane = 0;
1259 size = 0;
1260 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1261 omapfb_get_caps(fbdev, plane, &caps);
1262 size += snprintf(&buf[size], PAGE_SIZE - size,
1263 "plane#%d %#010x %#010x %#010x\n",
1264 plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1265 plane++;
1266 }
1267 return size;
1268 }
1269
1270 static ssize_t omapfb_show_caps_text(struct device *dev,
1271 struct device_attribute *attr, char *buf)
1272 {
1273 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1274 int i;
1275 struct omapfb_caps caps;
1276 int plane;
1277 size_t size;
1278
1279 plane = 0;
1280 size = 0;
1281 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1282 omapfb_get_caps(fbdev, plane, &caps);
1283 size += snprintf(&buf[size], PAGE_SIZE - size,
1284 "plane#%d:\n", plane);
1285 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1286 size < PAGE_SIZE; i++) {
1287 if (ctrl_caps[i].flag & caps.ctrl)
1288 size += snprintf(&buf[size], PAGE_SIZE - size,
1289 " %s\n", ctrl_caps[i].name);
1290 }
1291 size += snprintf(&buf[size], PAGE_SIZE - size,
1292 " plane colors:\n");
1293 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1294 size < PAGE_SIZE; i++) {
1295 if (color_caps[i].flag & caps.plane_color)
1296 size += snprintf(&buf[size], PAGE_SIZE - size,
1297 " %s\n", color_caps[i].name);
1298 }
1299 size += snprintf(&buf[size], PAGE_SIZE - size,
1300 " window colors:\n");
1301 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1302 size < PAGE_SIZE; i++) {
1303 if (color_caps[i].flag & caps.wnd_color)
1304 size += snprintf(&buf[size], PAGE_SIZE - size,
1305 " %s\n", color_caps[i].name);
1306 }
1307
1308 plane++;
1309 }
1310 return size;
1311 }
1312
1313 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1314 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1315
1316 /* panel sysfs entries */
1317 static ssize_t omapfb_show_panel_name(struct device *dev,
1318 struct device_attribute *attr, char *buf)
1319 {
1320 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1321
1322 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1323 }
1324
1325 static ssize_t omapfb_show_bklight_level(struct device *dev,
1326 struct device_attribute *attr,
1327 char *buf)
1328 {
1329 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1330 int r;
1331
1332 if (fbdev->panel->get_bklight_level) {
1333 r = snprintf(buf, PAGE_SIZE, "%d\n",
1334 fbdev->panel->get_bklight_level(fbdev->panel));
1335 } else
1336 r = -ENODEV;
1337 return r;
1338 }
1339
1340 static ssize_t omapfb_store_bklight_level(struct device *dev,
1341 struct device_attribute *attr,
1342 const char *buf, size_t size)
1343 {
1344 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1345 int r;
1346
1347 if (fbdev->panel->set_bklight_level) {
1348 unsigned int level;
1349
1350 if (sscanf(buf, "%10d", &level) == 1) {
1351 r = fbdev->panel->set_bklight_level(fbdev->panel,
1352 level);
1353 } else
1354 r = -EINVAL;
1355 } else
1356 r = -ENODEV;
1357 return r ? r : size;
1358 }
1359
1360 static ssize_t omapfb_show_bklight_max(struct device *dev,
1361 struct device_attribute *attr, char *buf)
1362 {
1363 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1364 int r;
1365
1366 if (fbdev->panel->get_bklight_level) {
1367 r = snprintf(buf, PAGE_SIZE, "%d\n",
1368 fbdev->panel->get_bklight_max(fbdev->panel));
1369 } else
1370 r = -ENODEV;
1371 return r;
1372 }
1373
1374 static struct device_attribute dev_attr_panel_name =
1375 __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1376 static DEVICE_ATTR(backlight_level, 0664,
1377 omapfb_show_bklight_level, omapfb_store_bklight_level);
1378 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1379
1380 static struct attribute *panel_attrs[] = {
1381 &dev_attr_panel_name.attr,
1382 &dev_attr_backlight_level.attr,
1383 &dev_attr_backlight_max.attr,
1384 NULL,
1385 };
1386
1387 static const struct attribute_group panel_attr_grp = {
1388 .name = "panel",
1389 .attrs = panel_attrs,
1390 };
1391
1392 /* ctrl sysfs entries */
1393 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1394 struct device_attribute *attr, char *buf)
1395 {
1396 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1397
1398 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1399 }
1400
1401 static struct device_attribute dev_attr_ctrl_name =
1402 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1403
1404 static struct attribute *ctrl_attrs[] = {
1405 &dev_attr_ctrl_name.attr,
1406 NULL,
1407 };
1408
1409 static const struct attribute_group ctrl_attr_grp = {
1410 .name = "ctrl",
1411 .attrs = ctrl_attrs,
1412 };
1413
1414 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1415 {
1416 int r;
1417
1418 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1419 goto fail0;
1420
1421 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1422 goto fail1;
1423
1424 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1425 goto fail2;
1426
1427 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1428 goto fail3;
1429
1430 return 0;
1431 fail3:
1432 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1433 fail2:
1434 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1435 fail1:
1436 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1437 fail0:
1438 dev_err(fbdev->dev, "unable to register sysfs interface\n");
1439 return r;
1440 }
1441
1442 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1443 {
1444 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1445 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1446 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1447 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1448 }
1449
1450 /*
1451 * ---------------------------------------------------------------------------
1452 * LDM callbacks
1453 * ---------------------------------------------------------------------------
1454 */
1455 /* Initialize system fb_info object and set the default video mode.
1456 * The frame buffer memory already allocated by lcddma_init
1457 */
1458 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1459 {
1460 struct fb_var_screeninfo *var = &info->var;
1461 struct fb_fix_screeninfo *fix = &info->fix;
1462 int r = 0;
1463
1464 info->fbops = &omapfb_ops;
1465 info->flags = FBINFO_FLAG_DEFAULT;
1466
1467 strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1468
1469 info->pseudo_palette = fbdev->pseudo_palette;
1470
1471 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0;
1472 var->xres = def_vxres;
1473 var->yres = def_vyres;
1474 var->xres_virtual = def_vxres;
1475 var->yres_virtual = def_vyres;
1476 var->rotate = def_rotate;
1477 var->bits_per_pixel = fbdev->panel->bpp;
1478
1479 set_fb_var(info, var);
1480 set_fb_fix(info, 1);
1481
1482 r = fb_alloc_cmap(&info->cmap, 16, 0);
1483 if (r != 0)
1484 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1485
1486 return r;
1487 }
1488
1489 /* Release the fb_info object */
1490 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1491 {
1492 fb_dealloc_cmap(&fbi->cmap);
1493 }
1494
1495 static void planes_cleanup(struct omapfb_device *fbdev)
1496 {
1497 int i;
1498
1499 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1500 if (fbdev->fb_info[i] == NULL)
1501 break;
1502 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1503 framebuffer_release(fbdev->fb_info[i]);
1504 }
1505 }
1506
1507 static int planes_init(struct omapfb_device *fbdev)
1508 {
1509 struct fb_info *fbi;
1510 int i;
1511 int r;
1512
1513 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1514 struct omapfb_plane_struct *plane;
1515 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1516 fbdev->dev);
1517 if (fbi == NULL) {
1518 dev_err(fbdev->dev,
1519 "unable to allocate memory for plane info\n");
1520 planes_cleanup(fbdev);
1521 return -ENOMEM;
1522 }
1523 plane = fbi->par;
1524 plane->idx = i;
1525 plane->fbdev = fbdev;
1526 plane->info.mirror = def_mirror;
1527 fbdev->fb_info[i] = fbi;
1528
1529 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1530 framebuffer_release(fbi);
1531 planes_cleanup(fbdev);
1532 return r;
1533 }
1534 plane->info.out_width = fbi->var.xres;
1535 plane->info.out_height = fbi->var.yres;
1536 }
1537 return 0;
1538 }
1539
1540 /*
1541 * Free driver resources. Can be called to rollback an aborted initialization
1542 * sequence.
1543 */
1544 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1545 {
1546 int i;
1547
1548 switch (state) {
1549 case OMAPFB_ACTIVE:
1550 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1551 unregister_framebuffer(fbdev->fb_info[i]);
1552 case 7:
1553 omapfb_unregister_sysfs(fbdev);
1554 case 6:
1555 if (fbdev->panel->disable)
1556 fbdev->panel->disable(fbdev->panel);
1557 case 5:
1558 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1559 case 4:
1560 planes_cleanup(fbdev);
1561 case 3:
1562 ctrl_cleanup(fbdev);
1563 case 2:
1564 if (fbdev->panel->cleanup)
1565 fbdev->panel->cleanup(fbdev->panel);
1566 case 1:
1567 dev_set_drvdata(fbdev->dev, NULL);
1568 kfree(fbdev);
1569 case 0:
1570 /* nothing to free */
1571 break;
1572 default:
1573 BUG();
1574 }
1575 }
1576
1577 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1578 {
1579 struct omapfb_platform_data *conf;
1580 char name[17];
1581 int i;
1582
1583 conf = dev_get_platdata(fbdev->dev);
1584
1585 fbdev->ctrl = NULL;
1586
1587 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1588 name[sizeof(name) - 1] = '\0';
1589
1590 if (strcmp(name, "internal") == 0) {
1591 fbdev->ctrl = fbdev->int_ctrl;
1592 return 0;
1593 }
1594
1595 for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1596 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1597 if (strcmp(ctrls[i]->name, name) == 0) {
1598 fbdev->ctrl = ctrls[i];
1599 break;
1600 }
1601 }
1602
1603 if (fbdev->ctrl == NULL) {
1604 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1605 return -1;
1606 }
1607
1608 return 0;
1609 }
1610
1611 /*
1612 * Called by LDM binding to probe and attach a new device.
1613 * Initialization sequence:
1614 * 1. allocate system omapfb_device structure
1615 * 2. select controller type according to platform configuration
1616 * init LCD panel
1617 * 3. init LCD controller and LCD DMA
1618 * 4. init system fb_info structure for all planes
1619 * 5. setup video mode for first plane and enable it
1620 * 6. enable LCD panel
1621 * 7. register sysfs attributes
1622 * OMAPFB_ACTIVE: register system fb_info structure for all planes
1623 */
1624 static int omapfb_do_probe(struct platform_device *pdev,
1625 struct lcd_panel *panel)
1626 {
1627 struct omapfb_device *fbdev = NULL;
1628 int init_state;
1629 unsigned long phz, hhz, vhz;
1630 unsigned long vram;
1631 int i;
1632 int r = 0;
1633
1634 init_state = 0;
1635
1636 if (pdev->num_resources != 0) {
1637 dev_err(&pdev->dev, "probed for an unknown device\n");
1638 r = -ENODEV;
1639 goto cleanup;
1640 }
1641
1642 if (dev_get_platdata(&pdev->dev) == NULL) {
1643 dev_err(&pdev->dev, "missing platform data\n");
1644 r = -ENOENT;
1645 goto cleanup;
1646 }
1647
1648 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
1649 if (fbdev == NULL) {
1650 dev_err(&pdev->dev,
1651 "unable to allocate memory for device info\n");
1652 r = -ENOMEM;
1653 goto cleanup;
1654 }
1655 init_state++;
1656
1657 fbdev->dev = &pdev->dev;
1658 fbdev->panel = panel;
1659 fbdev->dssdev = &omapdss_device;
1660 platform_set_drvdata(pdev, fbdev);
1661
1662 mutex_init(&fbdev->rqueue_mutex);
1663
1664 fbdev->int_ctrl = &omap1_int_ctrl;
1665 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1666 fbdev->ext_if = &omap1_ext_if;
1667 #endif
1668 if (omapfb_find_ctrl(fbdev) < 0) {
1669 dev_err(fbdev->dev,
1670 "LCD controller not found, board not supported\n");
1671 r = -ENODEV;
1672 goto cleanup;
1673 }
1674
1675 if (fbdev->panel->init) {
1676 r = fbdev->panel->init(fbdev->panel, fbdev);
1677 if (r)
1678 goto cleanup;
1679 }
1680
1681 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1682
1683 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1684 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1685
1686 init_state++;
1687
1688 r = ctrl_init(fbdev);
1689 if (r)
1690 goto cleanup;
1691 if (fbdev->ctrl->mmap != NULL)
1692 omapfb_ops.fb_mmap = omapfb_mmap;
1693 init_state++;
1694
1695 r = planes_init(fbdev);
1696 if (r)
1697 goto cleanup;
1698 init_state++;
1699
1700 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1701 /* Set DMA priority for EMIFF access to highest */
1702 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1703 #endif
1704
1705 r = ctrl_change_mode(fbdev->fb_info[0]);
1706 if (r) {
1707 dev_err(fbdev->dev, "mode setting failed\n");
1708 goto cleanup;
1709 }
1710
1711 /* GFX plane is enabled by default */
1712 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1713 if (r)
1714 goto cleanup;
1715
1716 omapfb_set_update_mode(fbdev, manual_update ?
1717 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1718 init_state++;
1719
1720 if (fbdev->panel->enable) {
1721 r = fbdev->panel->enable(fbdev->panel);
1722 if (r)
1723 goto cleanup;
1724 }
1725 init_state++;
1726
1727 r = omapfb_register_sysfs(fbdev);
1728 if (r)
1729 goto cleanup;
1730 init_state++;
1731
1732 vram = 0;
1733 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1734 r = register_framebuffer(fbdev->fb_info[i]);
1735 if (r != 0) {
1736 dev_err(fbdev->dev,
1737 "registering framebuffer %d failed\n", i);
1738 goto cleanup;
1739 }
1740 vram += fbdev->mem_desc.region[i].size;
1741 }
1742
1743 fbdev->state = OMAPFB_ACTIVE;
1744
1745 panel = fbdev->panel;
1746 phz = panel->pixel_clock * 1000;
1747 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1748 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1749
1750 omapfb_dev = fbdev;
1751
1752 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1753 vram, fbdev->mem_desc.region_cnt);
1754 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1755 "vfreq %lu.%lu Hz\n",
1756 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1757
1758 return 0;
1759
1760 cleanup:
1761 omapfb_free_resources(fbdev, init_state);
1762
1763 return r;
1764 }
1765
1766 static int omapfb_probe(struct platform_device *pdev)
1767 {
1768 int r;
1769
1770 BUG_ON(fbdev_pdev != NULL);
1771
1772 r = platform_device_register(&omapdss_device);
1773 if (r) {
1774 dev_err(&pdev->dev, "can't register omapdss device\n");
1775 return r;
1776 }
1777
1778 /* Delay actual initialization until the LCD is registered */
1779 fbdev_pdev = pdev;
1780 if (fbdev_panel != NULL)
1781 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1782 return 0;
1783 }
1784
1785 void omapfb_register_panel(struct lcd_panel *panel)
1786 {
1787 BUG_ON(fbdev_panel != NULL);
1788
1789 fbdev_panel = panel;
1790 if (fbdev_pdev != NULL)
1791 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1792 }
1793 EXPORT_SYMBOL_GPL(omapfb_register_panel);
1794
1795 /* Called when the device is being detached from the driver */
1796 static int omapfb_remove(struct platform_device *pdev)
1797 {
1798 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1799 enum omapfb_state saved_state = fbdev->state;
1800
1801 /* FIXME: wait till completion of pending events */
1802
1803 fbdev->state = OMAPFB_DISABLED;
1804 omapfb_free_resources(fbdev, saved_state);
1805
1806 platform_device_unregister(&omapdss_device);
1807 fbdev->dssdev = NULL;
1808
1809 return 0;
1810 }
1811
1812 /* PM suspend */
1813 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1814 {
1815 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1816
1817 if (fbdev != NULL)
1818 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1819 return 0;
1820 }
1821
1822 /* PM resume */
1823 static int omapfb_resume(struct platform_device *pdev)
1824 {
1825 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1826
1827 if (fbdev != NULL)
1828 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1829 return 0;
1830 }
1831
1832 static struct platform_driver omapfb_driver = {
1833 .probe = omapfb_probe,
1834 .remove = omapfb_remove,
1835 .suspend = omapfb_suspend,
1836 .resume = omapfb_resume,
1837 .driver = {
1838 .name = MODULE_NAME,
1839 },
1840 };
1841
1842 #ifndef MODULE
1843
1844 /* Process kernel command line parameters */
1845 static int __init omapfb_setup(char *options)
1846 {
1847 char *this_opt = NULL;
1848 int r = 0;
1849
1850 pr_debug("omapfb: options %s\n", options);
1851
1852 if (!options || !*options)
1853 return 0;
1854
1855 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1856 if (!strncmp(this_opt, "accel", 5))
1857 def_accel = 1;
1858 else if (!strncmp(this_opt, "vram:", 5)) {
1859 char *suffix;
1860 unsigned long vram;
1861 vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1862 switch (suffix[0]) {
1863 case '\0':
1864 break;
1865 case 'm':
1866 case 'M':
1867 vram *= 1024;
1868 /* Fall through */
1869 case 'k':
1870 case 'K':
1871 vram *= 1024;
1872 break;
1873 default:
1874 pr_debug("omapfb: invalid vram suffix %c\n",
1875 suffix[0]);
1876 r = -1;
1877 }
1878 def_vram[def_vram_cnt++] = vram;
1879 }
1880 else if (!strncmp(this_opt, "vxres:", 6))
1881 def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1882 else if (!strncmp(this_opt, "vyres:", 6))
1883 def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1884 else if (!strncmp(this_opt, "rotate:", 7))
1885 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1886 else if (!strncmp(this_opt, "mirror:", 7))
1887 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1888 else if (!strncmp(this_opt, "manual_update", 13))
1889 manual_update = 1;
1890 else {
1891 pr_debug("omapfb: invalid option\n");
1892 r = -1;
1893 }
1894 }
1895
1896 return r;
1897 }
1898
1899 #endif
1900
1901 /* Register both the driver and the device */
1902 static int __init omapfb_init(void)
1903 {
1904 #ifndef MODULE
1905 char *option;
1906
1907 if (fb_get_options("omapfb", &option))
1908 return -ENODEV;
1909 omapfb_setup(option);
1910 #endif
1911 /* Register the driver with LDM */
1912 if (platform_driver_register(&omapfb_driver)) {
1913 pr_debug("failed to register omapfb driver\n");
1914 return -ENODEV;
1915 }
1916
1917 return 0;
1918 }
1919
1920 static void __exit omapfb_cleanup(void)
1921 {
1922 platform_driver_unregister(&omapfb_driver);
1923 }
1924
1925 module_param_named(accel, def_accel, uint, 0664);
1926 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1927 module_param_named(vxres, def_vxres, long, 0664);
1928 module_param_named(vyres, def_vyres, long, 0664);
1929 module_param_named(rotate, def_rotate, uint, 0664);
1930 module_param_named(mirror, def_mirror, uint, 0664);
1931 module_param_named(manual_update, manual_update, bool, 0664);
1932
1933 module_init(omapfb_init);
1934 module_exit(omapfb_cleanup);
1935
1936 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1937 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1938 MODULE_LICENSE("GPL");
Linux with added FPC-III support