Loading...
1/*
2 * linux/drivers/video/omap2/omapfb-main.c
3 *
4 * Copyright (C) 2008 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23#include <linux/module.h>
24#include <linux/delay.h>
25#include <linux/slab.h>
26#include <linux/fb.h>
27#include <linux/dma-mapping.h>
28#include <linux/vmalloc.h>
29#include <linux/device.h>
30#include <linux/platform_device.h>
31#include <linux/omapfb.h>
32
33#include <video/omapdss.h>
34#include <plat/vram.h>
35#include <plat/vrfb.h>
36
37#include "omapfb.h"
38
39#define MODULE_NAME "omapfb"
40
41#define OMAPFB_PLANE_XRES_MIN 8
42#define OMAPFB_PLANE_YRES_MIN 8
43
44static char *def_mode;
45static char *def_vram;
46static bool def_vrfb;
47static int def_rotate;
48static bool def_mirror;
49static bool auto_update;
50static unsigned int auto_update_freq;
51module_param(auto_update, bool, 0);
52module_param(auto_update_freq, uint, 0644);
53
54#ifdef DEBUG
55bool omapfb_debug;
56module_param_named(debug, omapfb_debug, bool, 0644);
57static bool omapfb_test_pattern;
58module_param_named(test, omapfb_test_pattern, bool, 0644);
59#endif
60
61static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
62static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
63 struct omap_dss_device *dssdev);
64
65#ifdef DEBUG
66static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
67{
68 struct fb_var_screeninfo *var = &fbi->var;
69 struct fb_fix_screeninfo *fix = &fbi->fix;
70 void __iomem *addr = fbi->screen_base;
71 const unsigned bytespp = var->bits_per_pixel >> 3;
72 const unsigned line_len = fix->line_length / bytespp;
73
74 int r = (color >> 16) & 0xff;
75 int g = (color >> 8) & 0xff;
76 int b = (color >> 0) & 0xff;
77
78 if (var->bits_per_pixel == 16) {
79 u16 __iomem *p = (u16 __iomem *)addr;
80 p += y * line_len + x;
81
82 r = r * 32 / 256;
83 g = g * 64 / 256;
84 b = b * 32 / 256;
85
86 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
87 } else if (var->bits_per_pixel == 24) {
88 u8 __iomem *p = (u8 __iomem *)addr;
89 p += (y * line_len + x) * 3;
90
91 __raw_writeb(b, p + 0);
92 __raw_writeb(g, p + 1);
93 __raw_writeb(r, p + 2);
94 } else if (var->bits_per_pixel == 32) {
95 u32 __iomem *p = (u32 __iomem *)addr;
96 p += y * line_len + x;
97 __raw_writel(color, p);
98 }
99}
100
101static void fill_fb(struct fb_info *fbi)
102{
103 struct fb_var_screeninfo *var = &fbi->var;
104 const short w = var->xres_virtual;
105 const short h = var->yres_virtual;
106 void __iomem *addr = fbi->screen_base;
107 int y, x;
108
109 if (!addr)
110 return;
111
112 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
113
114 for (y = 0; y < h; y++) {
115 for (x = 0; x < w; x++) {
116 if (x < 20 && y < 20)
117 draw_pixel(fbi, x, y, 0xffffff);
118 else if (x < 20 && (y > 20 && y < h - 20))
119 draw_pixel(fbi, x, y, 0xff);
120 else if (y < 20 && (x > 20 && x < w - 20))
121 draw_pixel(fbi, x, y, 0xff00);
122 else if (x > w - 20 && (y > 20 && y < h - 20))
123 draw_pixel(fbi, x, y, 0xff0000);
124 else if (y > h - 20 && (x > 20 && x < w - 20))
125 draw_pixel(fbi, x, y, 0xffff00);
126 else if (x == 20 || x == w - 20 ||
127 y == 20 || y == h - 20)
128 draw_pixel(fbi, x, y, 0xffffff);
129 else if (x == y || w - x == h - y)
130 draw_pixel(fbi, x, y, 0xff00ff);
131 else if (w - x == y || x == h - y)
132 draw_pixel(fbi, x, y, 0x00ffff);
133 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
134 int t = x * 3 / w;
135 unsigned r = 0, g = 0, b = 0;
136 unsigned c;
137 if (var->bits_per_pixel == 16) {
138 if (t == 0)
139 b = (y % 32) * 256 / 32;
140 else if (t == 1)
141 g = (y % 64) * 256 / 64;
142 else if (t == 2)
143 r = (y % 32) * 256 / 32;
144 } else {
145 if (t == 0)
146 b = (y % 256);
147 else if (t == 1)
148 g = (y % 256);
149 else if (t == 2)
150 r = (y % 256);
151 }
152 c = (r << 16) | (g << 8) | (b << 0);
153 draw_pixel(fbi, x, y, c);
154 } else {
155 draw_pixel(fbi, x, y, 0);
156 }
157 }
158 }
159}
160#endif
161
162static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
163{
164 const struct vrfb *vrfb = &ofbi->region->vrfb;
165 unsigned offset;
166
167 switch (rot) {
168 case FB_ROTATE_UR:
169 offset = 0;
170 break;
171 case FB_ROTATE_CW:
172 offset = vrfb->yoffset;
173 break;
174 case FB_ROTATE_UD:
175 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
176 break;
177 case FB_ROTATE_CCW:
178 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
179 break;
180 default:
181 BUG();
182 return 0;
183 }
184
185 offset *= vrfb->bytespp;
186
187 return offset;
188}
189
190static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
191{
192 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
193 return ofbi->region->vrfb.paddr[rot]
194 + omapfb_get_vrfb_offset(ofbi, rot);
195 } else {
196 return ofbi->region->paddr;
197 }
198}
199
200static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
201{
202 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
203 return ofbi->region->vrfb.paddr[0];
204 else
205 return ofbi->region->paddr;
206}
207
208static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
209{
210 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
211 return ofbi->region->vrfb.vaddr[0];
212 else
213 return ofbi->region->vaddr;
214}
215
216static struct omapfb_colormode omapfb_colormodes[] = {
217 {
218 .dssmode = OMAP_DSS_COLOR_UYVY,
219 .bits_per_pixel = 16,
220 .nonstd = OMAPFB_COLOR_YUV422,
221 }, {
222 .dssmode = OMAP_DSS_COLOR_YUV2,
223 .bits_per_pixel = 16,
224 .nonstd = OMAPFB_COLOR_YUY422,
225 }, {
226 .dssmode = OMAP_DSS_COLOR_ARGB16,
227 .bits_per_pixel = 16,
228 .red = { .length = 4, .offset = 8, .msb_right = 0 },
229 .green = { .length = 4, .offset = 4, .msb_right = 0 },
230 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
231 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
232 }, {
233 .dssmode = OMAP_DSS_COLOR_RGB16,
234 .bits_per_pixel = 16,
235 .red = { .length = 5, .offset = 11, .msb_right = 0 },
236 .green = { .length = 6, .offset = 5, .msb_right = 0 },
237 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
238 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
239 }, {
240 .dssmode = OMAP_DSS_COLOR_RGB24P,
241 .bits_per_pixel = 24,
242 .red = { .length = 8, .offset = 16, .msb_right = 0 },
243 .green = { .length = 8, .offset = 8, .msb_right = 0 },
244 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
245 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
246 }, {
247 .dssmode = OMAP_DSS_COLOR_RGB24U,
248 .bits_per_pixel = 32,
249 .red = { .length = 8, .offset = 16, .msb_right = 0 },
250 .green = { .length = 8, .offset = 8, .msb_right = 0 },
251 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
252 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
253 }, {
254 .dssmode = OMAP_DSS_COLOR_ARGB32,
255 .bits_per_pixel = 32,
256 .red = { .length = 8, .offset = 16, .msb_right = 0 },
257 .green = { .length = 8, .offset = 8, .msb_right = 0 },
258 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
259 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
260 }, {
261 .dssmode = OMAP_DSS_COLOR_RGBA32,
262 .bits_per_pixel = 32,
263 .red = { .length = 8, .offset = 24, .msb_right = 0 },
264 .green = { .length = 8, .offset = 16, .msb_right = 0 },
265 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
266 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
267 }, {
268 .dssmode = OMAP_DSS_COLOR_RGBX32,
269 .bits_per_pixel = 32,
270 .red = { .length = 8, .offset = 24, .msb_right = 0 },
271 .green = { .length = 8, .offset = 16, .msb_right = 0 },
272 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
273 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
274 },
275};
276
277static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
278 struct omapfb_colormode *color)
279{
280 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
281 {
282 return f1->length == f2->length &&
283 f1->offset == f2->offset &&
284 f1->msb_right == f2->msb_right;
285 }
286
287 if (var->bits_per_pixel == 0 ||
288 var->red.length == 0 ||
289 var->blue.length == 0 ||
290 var->green.length == 0)
291 return 0;
292
293 return var->bits_per_pixel == color->bits_per_pixel &&
294 cmp_component(&var->red, &color->red) &&
295 cmp_component(&var->green, &color->green) &&
296 cmp_component(&var->blue, &color->blue) &&
297 cmp_component(&var->transp, &color->transp);
298}
299
300static void assign_colormode_to_var(struct fb_var_screeninfo *var,
301 struct omapfb_colormode *color)
302{
303 var->bits_per_pixel = color->bits_per_pixel;
304 var->nonstd = color->nonstd;
305 var->red = color->red;
306 var->green = color->green;
307 var->blue = color->blue;
308 var->transp = color->transp;
309}
310
311static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
312 enum omap_color_mode *mode)
313{
314 enum omap_color_mode dssmode;
315 int i;
316
317 /* first match with nonstd field */
318 if (var->nonstd) {
319 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
320 struct omapfb_colormode *m = &omapfb_colormodes[i];
321 if (var->nonstd == m->nonstd) {
322 assign_colormode_to_var(var, m);
323 *mode = m->dssmode;
324 return 0;
325 }
326 }
327
328 return -EINVAL;
329 }
330
331 /* then try exact match of bpp and colors */
332 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
333 struct omapfb_colormode *m = &omapfb_colormodes[i];
334 if (cmp_var_to_colormode(var, m)) {
335 assign_colormode_to_var(var, m);
336 *mode = m->dssmode;
337 return 0;
338 }
339 }
340
341 /* match with bpp if user has not filled color fields
342 * properly */
343 switch (var->bits_per_pixel) {
344 case 1:
345 dssmode = OMAP_DSS_COLOR_CLUT1;
346 break;
347 case 2:
348 dssmode = OMAP_DSS_COLOR_CLUT2;
349 break;
350 case 4:
351 dssmode = OMAP_DSS_COLOR_CLUT4;
352 break;
353 case 8:
354 dssmode = OMAP_DSS_COLOR_CLUT8;
355 break;
356 case 12:
357 dssmode = OMAP_DSS_COLOR_RGB12U;
358 break;
359 case 16:
360 dssmode = OMAP_DSS_COLOR_RGB16;
361 break;
362 case 24:
363 dssmode = OMAP_DSS_COLOR_RGB24P;
364 break;
365 case 32:
366 dssmode = OMAP_DSS_COLOR_RGB24U;
367 break;
368 default:
369 return -EINVAL;
370 }
371
372 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
373 struct omapfb_colormode *m = &omapfb_colormodes[i];
374 if (dssmode == m->dssmode) {
375 assign_colormode_to_var(var, m);
376 *mode = m->dssmode;
377 return 0;
378 }
379 }
380
381 return -EINVAL;
382}
383
384static int check_fb_res_bounds(struct fb_var_screeninfo *var)
385{
386 int xres_min = OMAPFB_PLANE_XRES_MIN;
387 int xres_max = 2048;
388 int yres_min = OMAPFB_PLANE_YRES_MIN;
389 int yres_max = 2048;
390
391 /* XXX: some applications seem to set virtual res to 0. */
392 if (var->xres_virtual == 0)
393 var->xres_virtual = var->xres;
394
395 if (var->yres_virtual == 0)
396 var->yres_virtual = var->yres;
397
398 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
399 return -EINVAL;
400
401 if (var->xres < xres_min)
402 var->xres = xres_min;
403 if (var->yres < yres_min)
404 var->yres = yres_min;
405 if (var->xres > xres_max)
406 var->xres = xres_max;
407 if (var->yres > yres_max)
408 var->yres = yres_max;
409
410 if (var->xres > var->xres_virtual)
411 var->xres = var->xres_virtual;
412 if (var->yres > var->yres_virtual)
413 var->yres = var->yres_virtual;
414
415 return 0;
416}
417
418static void shrink_height(unsigned long max_frame_size,
419 struct fb_var_screeninfo *var)
420{
421 DBG("can't fit FB into memory, reducing y\n");
422 var->yres_virtual = max_frame_size /
423 (var->xres_virtual * var->bits_per_pixel >> 3);
424
425 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
426 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
427
428 if (var->yres > var->yres_virtual)
429 var->yres = var->yres_virtual;
430}
431
432static void shrink_width(unsigned long max_frame_size,
433 struct fb_var_screeninfo *var)
434{
435 DBG("can't fit FB into memory, reducing x\n");
436 var->xres_virtual = max_frame_size / var->yres_virtual /
437 (var->bits_per_pixel >> 3);
438
439 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
440 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
441
442 if (var->xres > var->xres_virtual)
443 var->xres = var->xres_virtual;
444}
445
446static int check_vrfb_fb_size(unsigned long region_size,
447 const struct fb_var_screeninfo *var)
448{
449 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
450 var->yres_virtual, var->bits_per_pixel >> 3);
451
452 return min_phys_size > region_size ? -EINVAL : 0;
453}
454
455static int check_fb_size(const struct omapfb_info *ofbi,
456 struct fb_var_screeninfo *var)
457{
458 unsigned long max_frame_size = ofbi->region->size;
459 int bytespp = var->bits_per_pixel >> 3;
460 unsigned long line_size = var->xres_virtual * bytespp;
461
462 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
463 /* One needs to check for both VRFB and OMAPFB limitations. */
464 if (check_vrfb_fb_size(max_frame_size, var))
465 shrink_height(omap_vrfb_max_height(
466 max_frame_size, var->xres_virtual, bytespp) *
467 line_size, var);
468
469 if (check_vrfb_fb_size(max_frame_size, var)) {
470 DBG("cannot fit FB to memory\n");
471 return -EINVAL;
472 }
473
474 return 0;
475 }
476
477 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
478
479 if (line_size * var->yres_virtual > max_frame_size)
480 shrink_height(max_frame_size, var);
481
482 if (line_size * var->yres_virtual > max_frame_size) {
483 shrink_width(max_frame_size, var);
484 line_size = var->xres_virtual * bytespp;
485 }
486
487 if (line_size * var->yres_virtual > max_frame_size) {
488 DBG("cannot fit FB to memory\n");
489 return -EINVAL;
490 }
491
492 return 0;
493}
494
495/*
496 * Consider if VRFB assisted rotation is in use and if the virtual space for
497 * the zero degree view needs to be mapped. The need for mapping also acts as
498 * the trigger for setting up the hardware on the context in question. This
499 * ensures that one does not attempt to access the virtual view before the
500 * hardware is serving the address translations.
501 */
502static int setup_vrfb_rotation(struct fb_info *fbi)
503{
504 struct omapfb_info *ofbi = FB2OFB(fbi);
505 struct omapfb2_mem_region *rg = ofbi->region;
506 struct vrfb *vrfb = &rg->vrfb;
507 struct fb_var_screeninfo *var = &fbi->var;
508 struct fb_fix_screeninfo *fix = &fbi->fix;
509 unsigned bytespp;
510 bool yuv_mode;
511 enum omap_color_mode mode;
512 int r;
513 bool reconf;
514
515 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
516 return 0;
517
518 DBG("setup_vrfb_rotation\n");
519
520 r = fb_mode_to_dss_mode(var, &mode);
521 if (r)
522 return r;
523
524 bytespp = var->bits_per_pixel >> 3;
525
526 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
527
528 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
529 * is enabled/disabled, or if bytes per pixel changes */
530
531 /* XXX we shouldn't allow this when framebuffer is mmapped */
532
533 reconf = false;
534
535 if (yuv_mode != vrfb->yuv_mode)
536 reconf = true;
537 else if (bytespp != vrfb->bytespp)
538 reconf = true;
539 else if (vrfb->xres != var->xres_virtual ||
540 vrfb->yres != var->yres_virtual)
541 reconf = true;
542
543 if (vrfb->vaddr[0] && reconf) {
544 fbi->screen_base = NULL;
545 fix->smem_start = 0;
546 fix->smem_len = 0;
547 iounmap(vrfb->vaddr[0]);
548 vrfb->vaddr[0] = NULL;
549 DBG("setup_vrfb_rotation: reset fb\n");
550 }
551
552 if (vrfb->vaddr[0])
553 return 0;
554
555 omap_vrfb_setup(&rg->vrfb, rg->paddr,
556 var->xres_virtual,
557 var->yres_virtual,
558 bytespp, yuv_mode);
559
560 /* Now one can ioremap the 0 angle view */
561 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
562 if (r)
563 return r;
564
565 /* used by open/write in fbmem.c */
566 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
567
568 fix->smem_start = ofbi->region->vrfb.paddr[0];
569
570 switch (var->nonstd) {
571 case OMAPFB_COLOR_YUV422:
572 case OMAPFB_COLOR_YUY422:
573 fix->line_length =
574 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
575 break;
576 default:
577 fix->line_length =
578 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
579 break;
580 }
581
582 fix->smem_len = var->yres_virtual * fix->line_length;
583
584 return 0;
585}
586
587int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
588 struct fb_var_screeninfo *var)
589{
590 int i;
591
592 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
593 struct omapfb_colormode *mode = &omapfb_colormodes[i];
594 if (dssmode == mode->dssmode) {
595 assign_colormode_to_var(var, mode);
596 return 0;
597 }
598 }
599 return -ENOENT;
600}
601
602void set_fb_fix(struct fb_info *fbi)
603{
604 struct fb_fix_screeninfo *fix = &fbi->fix;
605 struct fb_var_screeninfo *var = &fbi->var;
606 struct omapfb_info *ofbi = FB2OFB(fbi);
607 struct omapfb2_mem_region *rg = ofbi->region;
608
609 DBG("set_fb_fix\n");
610
611 /* used by open/write in fbmem.c */
612 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
613
614 /* used by mmap in fbmem.c */
615 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
616 switch (var->nonstd) {
617 case OMAPFB_COLOR_YUV422:
618 case OMAPFB_COLOR_YUY422:
619 fix->line_length =
620 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
621 break;
622 default:
623 fix->line_length =
624 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
625 break;
626 }
627
628 fix->smem_len = var->yres_virtual * fix->line_length;
629 } else {
630 fix->line_length =
631 (var->xres_virtual * var->bits_per_pixel) >> 3;
632 fix->smem_len = rg->size;
633 }
634
635 fix->smem_start = omapfb_get_region_paddr(ofbi);
636
637 fix->type = FB_TYPE_PACKED_PIXELS;
638
639 if (var->nonstd)
640 fix->visual = FB_VISUAL_PSEUDOCOLOR;
641 else {
642 switch (var->bits_per_pixel) {
643 case 32:
644 case 24:
645 case 16:
646 case 12:
647 fix->visual = FB_VISUAL_TRUECOLOR;
648 /* 12bpp is stored in 16 bits */
649 break;
650 case 1:
651 case 2:
652 case 4:
653 case 8:
654 fix->visual = FB_VISUAL_PSEUDOCOLOR;
655 break;
656 }
657 }
658
659 fix->accel = FB_ACCEL_NONE;
660
661 fix->xpanstep = 1;
662 fix->ypanstep = 1;
663}
664
665/* check new var and possibly modify it to be ok */
666int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
667{
668 struct omapfb_info *ofbi = FB2OFB(fbi);
669 struct omap_dss_device *display = fb2display(fbi);
670 enum omap_color_mode mode = 0;
671 int i;
672 int r;
673
674 DBG("check_fb_var %d\n", ofbi->id);
675
676 WARN_ON(!atomic_read(&ofbi->region->lock_count));
677
678 r = fb_mode_to_dss_mode(var, &mode);
679 if (r) {
680 DBG("cannot convert var to omap dss mode\n");
681 return r;
682 }
683
684 for (i = 0; i < ofbi->num_overlays; ++i) {
685 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
686 DBG("invalid mode\n");
687 return -EINVAL;
688 }
689 }
690
691 if (var->rotate > 3)
692 return -EINVAL;
693
694 if (check_fb_res_bounds(var))
695 return -EINVAL;
696
697 /* When no memory is allocated ignore the size check */
698 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
699 return -EINVAL;
700
701 if (var->xres + var->xoffset > var->xres_virtual)
702 var->xoffset = var->xres_virtual - var->xres;
703 if (var->yres + var->yoffset > var->yres_virtual)
704 var->yoffset = var->yres_virtual - var->yres;
705
706 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
707 var->xres, var->yres,
708 var->xres_virtual, var->yres_virtual);
709
710 if (display && display->driver->get_dimensions) {
711 u32 w, h;
712 display->driver->get_dimensions(display, &w, &h);
713 var->width = DIV_ROUND_CLOSEST(w, 1000);
714 var->height = DIV_ROUND_CLOSEST(h, 1000);
715 } else {
716 var->height = -1;
717 var->width = -1;
718 }
719
720 var->grayscale = 0;
721
722 if (display && display->driver->get_timings) {
723 struct omap_video_timings timings;
724 display->driver->get_timings(display, &timings);
725
726 /* pixclock in ps, the rest in pixclock */
727 var->pixclock = timings.pixel_clock != 0 ?
728 KHZ2PICOS(timings.pixel_clock) :
729 0;
730 var->left_margin = timings.hbp;
731 var->right_margin = timings.hfp;
732 var->upper_margin = timings.vbp;
733 var->lower_margin = timings.vfp;
734 var->hsync_len = timings.hsw;
735 var->vsync_len = timings.vsw;
736 } else {
737 var->pixclock = 0;
738 var->left_margin = 0;
739 var->right_margin = 0;
740 var->upper_margin = 0;
741 var->lower_margin = 0;
742 var->hsync_len = 0;
743 var->vsync_len = 0;
744 }
745
746 /* TODO: get these from panel->config */
747 var->vmode = FB_VMODE_NONINTERLACED;
748 var->sync = 0;
749
750 return 0;
751}
752
753/*
754 * ---------------------------------------------------------------------------
755 * fbdev framework callbacks
756 * ---------------------------------------------------------------------------
757 */
758static int omapfb_open(struct fb_info *fbi, int user)
759{
760 return 0;
761}
762
763static int omapfb_release(struct fb_info *fbi, int user)
764{
765 return 0;
766}
767
768static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
769 const struct fb_fix_screeninfo *fix, int rotation)
770{
771 unsigned offset;
772
773 offset = var->yoffset * fix->line_length +
774 var->xoffset * (var->bits_per_pixel >> 3);
775
776 return offset;
777}
778
779static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
780 const struct fb_fix_screeninfo *fix, int rotation)
781{
782 unsigned offset;
783
784 if (rotation == FB_ROTATE_UD)
785 offset = (var->yres_virtual - var->yres) *
786 fix->line_length;
787 else if (rotation == FB_ROTATE_CW)
788 offset = (var->yres_virtual - var->yres) *
789 (var->bits_per_pixel >> 3);
790 else
791 offset = 0;
792
793 if (rotation == FB_ROTATE_UR)
794 offset += var->yoffset * fix->line_length +
795 var->xoffset * (var->bits_per_pixel >> 3);
796 else if (rotation == FB_ROTATE_UD)
797 offset -= var->yoffset * fix->line_length +
798 var->xoffset * (var->bits_per_pixel >> 3);
799 else if (rotation == FB_ROTATE_CW)
800 offset -= var->xoffset * fix->line_length +
801 var->yoffset * (var->bits_per_pixel >> 3);
802 else if (rotation == FB_ROTATE_CCW)
803 offset += var->xoffset * fix->line_length +
804 var->yoffset * (var->bits_per_pixel >> 3);
805
806 return offset;
807}
808
809static void omapfb_calc_addr(const struct omapfb_info *ofbi,
810 const struct fb_var_screeninfo *var,
811 const struct fb_fix_screeninfo *fix,
812 int rotation, u32 *paddr)
813{
814 u32 data_start_p;
815 int offset;
816
817 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
818 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
819 else
820 data_start_p = omapfb_get_region_paddr(ofbi);
821
822 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
823 offset = calc_rotation_offset_vrfb(var, fix, rotation);
824 else
825 offset = calc_rotation_offset_dma(var, fix, rotation);
826
827 data_start_p += offset;
828
829 if (offset)
830 DBG("offset %d, %d = %d\n",
831 var->xoffset, var->yoffset, offset);
832
833 DBG("paddr %x\n", data_start_p);
834
835 *paddr = data_start_p;
836}
837
838/* setup overlay according to the fb */
839int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
840 u16 posx, u16 posy, u16 outw, u16 outh)
841{
842 int r = 0;
843 struct omapfb_info *ofbi = FB2OFB(fbi);
844 struct fb_var_screeninfo *var = &fbi->var;
845 struct fb_fix_screeninfo *fix = &fbi->fix;
846 enum omap_color_mode mode = 0;
847 u32 data_start_p = 0;
848 struct omap_overlay_info info;
849 int xres, yres;
850 int screen_width;
851 int mirror;
852 int rotation = var->rotate;
853 int i;
854
855 WARN_ON(!atomic_read(&ofbi->region->lock_count));
856
857 for (i = 0; i < ofbi->num_overlays; i++) {
858 if (ovl != ofbi->overlays[i])
859 continue;
860
861 rotation = (rotation + ofbi->rotation[i]) % 4;
862 break;
863 }
864
865 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
866 posx, posy, outw, outh);
867
868 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
869 xres = var->yres;
870 yres = var->xres;
871 } else {
872 xres = var->xres;
873 yres = var->yres;
874 }
875
876 if (ofbi->region->size)
877 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
878
879 r = fb_mode_to_dss_mode(var, &mode);
880 if (r) {
881 DBG("fb_mode_to_dss_mode failed");
882 goto err;
883 }
884
885 switch (var->nonstd) {
886 case OMAPFB_COLOR_YUV422:
887 case OMAPFB_COLOR_YUY422:
888 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
889 screen_width = fix->line_length
890 / (var->bits_per_pixel >> 2);
891 break;
892 }
893 default:
894 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
895 break;
896 }
897
898 ovl->get_overlay_info(ovl, &info);
899
900 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
901 mirror = 0;
902 else
903 mirror = ofbi->mirror;
904
905 info.paddr = data_start_p;
906 info.screen_width = screen_width;
907 info.width = xres;
908 info.height = yres;
909 info.color_mode = mode;
910 info.rotation_type = ofbi->rotation_type;
911 info.rotation = rotation;
912 info.mirror = mirror;
913
914 info.pos_x = posx;
915 info.pos_y = posy;
916 info.out_width = outw;
917 info.out_height = outh;
918
919 r = ovl->set_overlay_info(ovl, &info);
920 if (r) {
921 DBG("ovl->setup_overlay_info failed\n");
922 goto err;
923 }
924
925 return 0;
926
927err:
928 DBG("setup_overlay failed\n");
929 return r;
930}
931
932/* apply var to the overlay */
933int omapfb_apply_changes(struct fb_info *fbi, int init)
934{
935 int r = 0;
936 struct omapfb_info *ofbi = FB2OFB(fbi);
937 struct fb_var_screeninfo *var = &fbi->var;
938 struct omap_overlay *ovl;
939 u16 posx, posy;
940 u16 outw, outh;
941 int i;
942
943#ifdef DEBUG
944 if (omapfb_test_pattern)
945 fill_fb(fbi);
946#endif
947
948 WARN_ON(!atomic_read(&ofbi->region->lock_count));
949
950 for (i = 0; i < ofbi->num_overlays; i++) {
951 ovl = ofbi->overlays[i];
952
953 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
954
955 if (ofbi->region->size == 0) {
956 /* the fb is not available. disable the overlay */
957 omapfb_overlay_enable(ovl, 0);
958 if (!init && ovl->manager)
959 ovl->manager->apply(ovl->manager);
960 continue;
961 }
962
963 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
964 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
965 if (rotation == FB_ROTATE_CW ||
966 rotation == FB_ROTATE_CCW) {
967 outw = var->yres;
968 outh = var->xres;
969 } else {
970 outw = var->xres;
971 outh = var->yres;
972 }
973 } else {
974 struct omap_overlay_info info;
975 ovl->get_overlay_info(ovl, &info);
976 outw = info.out_width;
977 outh = info.out_height;
978 }
979
980 if (init) {
981 posx = 0;
982 posy = 0;
983 } else {
984 struct omap_overlay_info info;
985 ovl->get_overlay_info(ovl, &info);
986 posx = info.pos_x;
987 posy = info.pos_y;
988 }
989
990 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
991 if (r)
992 goto err;
993
994 if (!init && ovl->manager)
995 ovl->manager->apply(ovl->manager);
996 }
997 return 0;
998err:
999 DBG("apply_changes failed\n");
1000 return r;
1001}
1002
1003/* checks var and eventually tweaks it to something supported,
1004 * DO NOT MODIFY PAR */
1005static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1006{
1007 struct omapfb_info *ofbi = FB2OFB(fbi);
1008 int r;
1009
1010 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1011
1012 omapfb_get_mem_region(ofbi->region);
1013
1014 r = check_fb_var(fbi, var);
1015
1016 omapfb_put_mem_region(ofbi->region);
1017
1018 return r;
1019}
1020
1021/* set the video mode according to info->var */
1022static int omapfb_set_par(struct fb_info *fbi)
1023{
1024 struct omapfb_info *ofbi = FB2OFB(fbi);
1025 int r;
1026
1027 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1028
1029 omapfb_get_mem_region(ofbi->region);
1030
1031 set_fb_fix(fbi);
1032
1033 r = setup_vrfb_rotation(fbi);
1034 if (r)
1035 goto out;
1036
1037 r = omapfb_apply_changes(fbi, 0);
1038
1039 out:
1040 omapfb_put_mem_region(ofbi->region);
1041
1042 return r;
1043}
1044
1045static int omapfb_pan_display(struct fb_var_screeninfo *var,
1046 struct fb_info *fbi)
1047{
1048 struct omapfb_info *ofbi = FB2OFB(fbi);
1049 struct fb_var_screeninfo new_var;
1050 int r;
1051
1052 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1053
1054 if (var->xoffset == fbi->var.xoffset &&
1055 var->yoffset == fbi->var.yoffset)
1056 return 0;
1057
1058 new_var = fbi->var;
1059 new_var.xoffset = var->xoffset;
1060 new_var.yoffset = var->yoffset;
1061
1062 fbi->var = new_var;
1063
1064 omapfb_get_mem_region(ofbi->region);
1065
1066 r = omapfb_apply_changes(fbi, 0);
1067
1068 omapfb_put_mem_region(ofbi->region);
1069
1070 return r;
1071}
1072
1073static void mmap_user_open(struct vm_area_struct *vma)
1074{
1075 struct omapfb2_mem_region *rg = vma->vm_private_data;
1076
1077 omapfb_get_mem_region(rg);
1078 atomic_inc(&rg->map_count);
1079 omapfb_put_mem_region(rg);
1080}
1081
1082static void mmap_user_close(struct vm_area_struct *vma)
1083{
1084 struct omapfb2_mem_region *rg = vma->vm_private_data;
1085
1086 omapfb_get_mem_region(rg);
1087 atomic_dec(&rg->map_count);
1088 omapfb_put_mem_region(rg);
1089}
1090
1091static struct vm_operations_struct mmap_user_ops = {
1092 .open = mmap_user_open,
1093 .close = mmap_user_close,
1094};
1095
1096static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1097{
1098 struct omapfb_info *ofbi = FB2OFB(fbi);
1099 struct fb_fix_screeninfo *fix = &fbi->fix;
1100 struct omapfb2_mem_region *rg;
1101 unsigned long off;
1102 unsigned long start;
1103 u32 len;
1104 int r = -EINVAL;
1105
1106 if (vma->vm_end - vma->vm_start == 0)
1107 return 0;
1108 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1109 return -EINVAL;
1110 off = vma->vm_pgoff << PAGE_SHIFT;
1111
1112 rg = omapfb_get_mem_region(ofbi->region);
1113
1114 start = omapfb_get_region_paddr(ofbi);
1115 len = fix->smem_len;
1116 if (off >= len)
1117 goto error;
1118 if ((vma->vm_end - vma->vm_start + off) > len)
1119 goto error;
1120
1121 off += start;
1122
1123 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1124
1125 vma->vm_pgoff = off >> PAGE_SHIFT;
1126 vma->vm_flags |= VM_IO | VM_RESERVED;
1127 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1128 vma->vm_ops = &mmap_user_ops;
1129 vma->vm_private_data = rg;
1130 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1131 vma->vm_end - vma->vm_start,
1132 vma->vm_page_prot)) {
1133 r = -EAGAIN;
1134 goto error;
1135 }
1136
1137 /* vm_ops.open won't be called for mmap itself. */
1138 atomic_inc(&rg->map_count);
1139
1140 omapfb_put_mem_region(rg);
1141
1142 return 0;
1143
1144 error:
1145 omapfb_put_mem_region(ofbi->region);
1146
1147 return r;
1148}
1149
1150/* Store a single color palette entry into a pseudo palette or the hardware
1151 * palette if one is available. For now we support only 16bpp and thus store
1152 * the entry only to the pseudo palette.
1153 */
1154static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1155 u_int blue, u_int transp, int update_hw_pal)
1156{
1157 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1158 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1159 struct fb_var_screeninfo *var = &fbi->var;
1160 int r = 0;
1161
1162 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1163
1164 /*switch (plane->color_mode) {*/
1165 switch (mode) {
1166 case OMAPFB_COLOR_YUV422:
1167 case OMAPFB_COLOR_YUV420:
1168 case OMAPFB_COLOR_YUY422:
1169 r = -EINVAL;
1170 break;
1171 case OMAPFB_COLOR_CLUT_8BPP:
1172 case OMAPFB_COLOR_CLUT_4BPP:
1173 case OMAPFB_COLOR_CLUT_2BPP:
1174 case OMAPFB_COLOR_CLUT_1BPP:
1175 /*
1176 if (fbdev->ctrl->setcolreg)
1177 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1178 transp, update_hw_pal);
1179 */
1180 /* Fallthrough */
1181 r = -EINVAL;
1182 break;
1183 case OMAPFB_COLOR_RGB565:
1184 case OMAPFB_COLOR_RGB444:
1185 case OMAPFB_COLOR_RGB24P:
1186 case OMAPFB_COLOR_RGB24U:
1187 if (r != 0)
1188 break;
1189
1190 if (regno < 16) {
1191 u32 pal;
1192 pal = ((red >> (16 - var->red.length)) <<
1193 var->red.offset) |
1194 ((green >> (16 - var->green.length)) <<
1195 var->green.offset) |
1196 (blue >> (16 - var->blue.length));
1197 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1198 }
1199 break;
1200 default:
1201 BUG();
1202 }
1203 return r;
1204}
1205
1206static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1207 u_int transp, struct fb_info *info)
1208{
1209 DBG("setcolreg\n");
1210
1211 return _setcolreg(info, regno, red, green, blue, transp, 1);
1212}
1213
1214static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1215{
1216 int count, index, r;
1217 u16 *red, *green, *blue, *transp;
1218 u16 trans = 0xffff;
1219
1220 DBG("setcmap\n");
1221
1222 red = cmap->red;
1223 green = cmap->green;
1224 blue = cmap->blue;
1225 transp = cmap->transp;
1226 index = cmap->start;
1227
1228 for (count = 0; count < cmap->len; count++) {
1229 if (transp)
1230 trans = *transp++;
1231 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1232 count == cmap->len - 1);
1233 if (r != 0)
1234 return r;
1235 }
1236
1237 return 0;
1238}
1239
1240static int omapfb_blank(int blank, struct fb_info *fbi)
1241{
1242 struct omapfb_info *ofbi = FB2OFB(fbi);
1243 struct omapfb2_device *fbdev = ofbi->fbdev;
1244 struct omap_dss_device *display = fb2display(fbi);
1245 struct omapfb_display_data *d;
1246 int r = 0;
1247
1248 if (!display)
1249 return -EINVAL;
1250
1251 omapfb_lock(fbdev);
1252
1253 d = get_display_data(fbdev, display);
1254
1255 switch (blank) {
1256 case FB_BLANK_UNBLANK:
1257 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1258 goto exit;
1259
1260 if (display->driver->resume)
1261 r = display->driver->resume(display);
1262
1263 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1264 d->update_mode == OMAPFB_AUTO_UPDATE &&
1265 !d->auto_update_work_enabled)
1266 omapfb_start_auto_update(fbdev, display);
1267
1268 break;
1269
1270 case FB_BLANK_NORMAL:
1271 /* FB_BLANK_NORMAL could be implemented.
1272 * Needs DSS additions. */
1273 case FB_BLANK_VSYNC_SUSPEND:
1274 case FB_BLANK_HSYNC_SUSPEND:
1275 case FB_BLANK_POWERDOWN:
1276 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1277 goto exit;
1278
1279 if (d->auto_update_work_enabled)
1280 omapfb_stop_auto_update(fbdev, display);
1281
1282 if (display->driver->suspend)
1283 r = display->driver->suspend(display);
1284
1285 break;
1286
1287 default:
1288 r = -EINVAL;
1289 }
1290
1291exit:
1292 omapfb_unlock(fbdev);
1293
1294 return r;
1295}
1296
1297#if 0
1298/* XXX fb_read and fb_write are needed for VRFB */
1299ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1300 size_t count, loff_t *ppos)
1301{
1302 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1303 /* XXX needed for VRFB */
1304 return count;
1305}
1306#endif
1307
1308static struct fb_ops omapfb_ops = {
1309 .owner = THIS_MODULE,
1310 .fb_open = omapfb_open,
1311 .fb_release = omapfb_release,
1312 .fb_fillrect = cfb_fillrect,
1313 .fb_copyarea = cfb_copyarea,
1314 .fb_imageblit = cfb_imageblit,
1315 .fb_blank = omapfb_blank,
1316 .fb_ioctl = omapfb_ioctl,
1317 .fb_check_var = omapfb_check_var,
1318 .fb_set_par = omapfb_set_par,
1319 .fb_pan_display = omapfb_pan_display,
1320 .fb_mmap = omapfb_mmap,
1321 .fb_setcolreg = omapfb_setcolreg,
1322 .fb_setcmap = omapfb_setcmap,
1323 /*.fb_write = omapfb_write,*/
1324};
1325
1326static void omapfb_free_fbmem(struct fb_info *fbi)
1327{
1328 struct omapfb_info *ofbi = FB2OFB(fbi);
1329 struct omapfb2_device *fbdev = ofbi->fbdev;
1330 struct omapfb2_mem_region *rg;
1331
1332 rg = ofbi->region;
1333
1334 WARN_ON(atomic_read(&rg->map_count));
1335
1336 if (rg->paddr)
1337 if (omap_vram_free(rg->paddr, rg->size))
1338 dev_err(fbdev->dev, "VRAM FREE failed\n");
1339
1340 if (rg->vaddr)
1341 iounmap(rg->vaddr);
1342
1343 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1344 /* unmap the 0 angle rotation */
1345 if (rg->vrfb.vaddr[0]) {
1346 iounmap(rg->vrfb.vaddr[0]);
1347 omap_vrfb_release_ctx(&rg->vrfb);
1348 rg->vrfb.vaddr[0] = NULL;
1349 }
1350 }
1351
1352 rg->vaddr = NULL;
1353 rg->paddr = 0;
1354 rg->alloc = 0;
1355 rg->size = 0;
1356}
1357
1358static void clear_fb_info(struct fb_info *fbi)
1359{
1360 memset(&fbi->var, 0, sizeof(fbi->var));
1361 memset(&fbi->fix, 0, sizeof(fbi->fix));
1362 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1363}
1364
1365static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1366{
1367 int i;
1368
1369 DBG("free all fbmem\n");
1370
1371 for (i = 0; i < fbdev->num_fbs; i++) {
1372 struct fb_info *fbi = fbdev->fbs[i];
1373 omapfb_free_fbmem(fbi);
1374 clear_fb_info(fbi);
1375 }
1376
1377 return 0;
1378}
1379
1380static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1381 unsigned long paddr)
1382{
1383 struct omapfb_info *ofbi = FB2OFB(fbi);
1384 struct omapfb2_device *fbdev = ofbi->fbdev;
1385 struct omapfb2_mem_region *rg;
1386 void __iomem *vaddr;
1387 int r;
1388
1389 rg = ofbi->region;
1390
1391 rg->paddr = 0;
1392 rg->vaddr = NULL;
1393 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1394 rg->size = 0;
1395 rg->type = 0;
1396 rg->alloc = false;
1397 rg->map = false;
1398
1399 size = PAGE_ALIGN(size);
1400
1401 if (!paddr) {
1402 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1403 r = omap_vram_alloc(size, &paddr);
1404 } else {
1405 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1406 ofbi->id);
1407 r = omap_vram_reserve(paddr, size);
1408 }
1409
1410 if (r) {
1411 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1412 return -ENOMEM;
1413 }
1414
1415 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1416 vaddr = ioremap_wc(paddr, size);
1417
1418 if (!vaddr) {
1419 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1420 omap_vram_free(paddr, size);
1421 return -ENOMEM;
1422 }
1423
1424 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1425 } else {
1426 r = omap_vrfb_request_ctx(&rg->vrfb);
1427 if (r) {
1428 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1429 return r;
1430 }
1431
1432 vaddr = NULL;
1433 }
1434
1435 rg->paddr = paddr;
1436 rg->vaddr = vaddr;
1437 rg->size = size;
1438 rg->alloc = 1;
1439
1440 return 0;
1441}
1442
1443/* allocate fbmem using display resolution as reference */
1444static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1445 unsigned long paddr)
1446{
1447 struct omapfb_info *ofbi = FB2OFB(fbi);
1448 struct omapfb2_device *fbdev = ofbi->fbdev;
1449 struct omap_dss_device *display;
1450 int bytespp;
1451
1452 display = fb2display(fbi);
1453
1454 if (!display)
1455 return 0;
1456
1457 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1458 case 16:
1459 bytespp = 2;
1460 break;
1461 case 24:
1462 bytespp = 4;
1463 break;
1464 default:
1465 bytespp = 4;
1466 break;
1467 }
1468
1469 if (!size) {
1470 u16 w, h;
1471
1472 display->driver->get_resolution(display, &w, &h);
1473
1474 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1475 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1476 omap_vrfb_min_phys_size(h, w, bytespp));
1477
1478 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1479 w * h * bytespp, size);
1480 } else {
1481 size = w * h * bytespp;
1482 }
1483 }
1484
1485 if (!size)
1486 return 0;
1487
1488 return omapfb_alloc_fbmem(fbi, size, paddr);
1489}
1490
1491static int omapfb_parse_vram_param(const char *param, int max_entries,
1492 unsigned long *sizes, unsigned long *paddrs)
1493{
1494 int fbnum;
1495 unsigned long size;
1496 unsigned long paddr = 0;
1497 char *p, *start;
1498
1499 start = (char *)param;
1500
1501 while (1) {
1502 p = start;
1503
1504 fbnum = simple_strtoul(p, &p, 10);
1505
1506 if (p == start)
1507 return -EINVAL;
1508
1509 if (*p != ':')
1510 return -EINVAL;
1511
1512 if (fbnum >= max_entries)
1513 return -EINVAL;
1514
1515 size = memparse(p + 1, &p);
1516
1517 if (!size)
1518 return -EINVAL;
1519
1520 paddr = 0;
1521
1522 if (*p == '@') {
1523 paddr = simple_strtoul(p + 1, &p, 16);
1524
1525 if (!paddr)
1526 return -EINVAL;
1527
1528 }
1529
1530 paddrs[fbnum] = paddr;
1531 sizes[fbnum] = size;
1532
1533 if (*p == 0)
1534 break;
1535
1536 if (*p != ',')
1537 return -EINVAL;
1538
1539 ++p;
1540
1541 start = p;
1542 }
1543
1544 return 0;
1545}
1546
1547static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1548{
1549 int i, r;
1550 unsigned long vram_sizes[10];
1551 unsigned long vram_paddrs[10];
1552
1553 memset(&vram_sizes, 0, sizeof(vram_sizes));
1554 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1555
1556 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1557 vram_sizes, vram_paddrs)) {
1558 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1559
1560 memset(&vram_sizes, 0, sizeof(vram_sizes));
1561 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1562 }
1563
1564 for (i = 0; i < fbdev->num_fbs; i++) {
1565 /* allocate memory automatically only for fb0, or if
1566 * excplicitly defined with vram or plat data option */
1567 if (i == 0 || vram_sizes[i] != 0) {
1568 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1569 vram_sizes[i], vram_paddrs[i]);
1570
1571 if (r)
1572 return r;
1573 }
1574 }
1575
1576 for (i = 0; i < fbdev->num_fbs; i++) {
1577 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1578 struct omapfb2_mem_region *rg;
1579 rg = ofbi->region;
1580
1581 DBG("region%d phys %08x virt %p size=%lu\n",
1582 i,
1583 rg->paddr,
1584 rg->vaddr,
1585 rg->size);
1586 }
1587
1588 return 0;
1589}
1590
1591int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1592{
1593 struct omapfb_info *ofbi = FB2OFB(fbi);
1594 struct omapfb2_device *fbdev = ofbi->fbdev;
1595 struct omap_dss_device *display = fb2display(fbi);
1596 struct omapfb2_mem_region *rg = ofbi->region;
1597 unsigned long old_size = rg->size;
1598 unsigned long old_paddr = rg->paddr;
1599 int old_type = rg->type;
1600 int r;
1601
1602 if (type != OMAPFB_MEMTYPE_SDRAM)
1603 return -EINVAL;
1604
1605 size = PAGE_ALIGN(size);
1606
1607 if (old_size == size && old_type == type)
1608 return 0;
1609
1610 if (display && display->driver->sync)
1611 display->driver->sync(display);
1612
1613 omapfb_free_fbmem(fbi);
1614
1615 if (size == 0) {
1616 clear_fb_info(fbi);
1617 return 0;
1618 }
1619
1620 r = omapfb_alloc_fbmem(fbi, size, 0);
1621
1622 if (r) {
1623 if (old_size)
1624 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1625
1626 if (rg->size == 0)
1627 clear_fb_info(fbi);
1628
1629 return r;
1630 }
1631
1632 if (old_size == size)
1633 return 0;
1634
1635 if (old_size == 0) {
1636 DBG("initializing fb %d\n", ofbi->id);
1637 r = omapfb_fb_init(fbdev, fbi);
1638 if (r) {
1639 DBG("omapfb_fb_init failed\n");
1640 goto err;
1641 }
1642 r = omapfb_apply_changes(fbi, 1);
1643 if (r) {
1644 DBG("omapfb_apply_changes failed\n");
1645 goto err;
1646 }
1647 } else {
1648 struct fb_var_screeninfo new_var;
1649 memcpy(&new_var, &fbi->var, sizeof(new_var));
1650 r = check_fb_var(fbi, &new_var);
1651 if (r)
1652 goto err;
1653 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1654 set_fb_fix(fbi);
1655 r = setup_vrfb_rotation(fbi);
1656 if (r)
1657 goto err;
1658 }
1659
1660 return 0;
1661err:
1662 omapfb_free_fbmem(fbi);
1663 clear_fb_info(fbi);
1664 return r;
1665}
1666
1667static void omapfb_auto_update_work(struct work_struct *work)
1668{
1669 struct omap_dss_device *dssdev;
1670 struct omap_dss_driver *dssdrv;
1671 struct omapfb_display_data *d;
1672 u16 w, h;
1673 unsigned int freq;
1674 struct omapfb2_device *fbdev;
1675
1676 d = container_of(work, struct omapfb_display_data,
1677 auto_update_work.work);
1678
1679 dssdev = d->dssdev;
1680 dssdrv = dssdev->driver;
1681 fbdev = d->fbdev;
1682
1683 if (!dssdrv || !dssdrv->update)
1684 return;
1685
1686 if (dssdrv->sync)
1687 dssdrv->sync(dssdev);
1688
1689 dssdrv->get_resolution(dssdev, &w, &h);
1690 dssdrv->update(dssdev, 0, 0, w, h);
1691
1692 freq = auto_update_freq;
1693 if (freq == 0)
1694 freq = 20;
1695 queue_delayed_work(fbdev->auto_update_wq,
1696 &d->auto_update_work, HZ / freq);
1697}
1698
1699void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1700 struct omap_dss_device *display)
1701{
1702 struct omapfb_display_data *d;
1703
1704 if (fbdev->auto_update_wq == NULL) {
1705 struct workqueue_struct *wq;
1706
1707 wq = create_singlethread_workqueue("omapfb_auto_update");
1708
1709 if (wq == NULL) {
1710 dev_err(fbdev->dev, "Failed to create workqueue for "
1711 "auto-update\n");
1712 return;
1713 }
1714
1715 fbdev->auto_update_wq = wq;
1716 }
1717
1718 d = get_display_data(fbdev, display);
1719
1720 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1721
1722 d->auto_update_work_enabled = true;
1723
1724 omapfb_auto_update_work(&d->auto_update_work.work);
1725}
1726
1727void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1728 struct omap_dss_device *display)
1729{
1730 struct omapfb_display_data *d;
1731
1732 d = get_display_data(fbdev, display);
1733
1734 cancel_delayed_work_sync(&d->auto_update_work);
1735
1736 d->auto_update_work_enabled = false;
1737}
1738
1739/* initialize fb_info, var, fix to something sane based on the display */
1740static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1741{
1742 struct fb_var_screeninfo *var = &fbi->var;
1743 struct omap_dss_device *display = fb2display(fbi);
1744 struct omapfb_info *ofbi = FB2OFB(fbi);
1745 int r = 0;
1746
1747 fbi->fbops = &omapfb_ops;
1748 fbi->flags = FBINFO_FLAG_DEFAULT;
1749 fbi->pseudo_palette = fbdev->pseudo_palette;
1750
1751 if (ofbi->region->size == 0) {
1752 clear_fb_info(fbi);
1753 return 0;
1754 }
1755
1756 var->nonstd = 0;
1757 var->bits_per_pixel = 0;
1758
1759 var->rotate = def_rotate;
1760
1761 if (display) {
1762 u16 w, h;
1763 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1764
1765 display->driver->get_resolution(display, &w, &h);
1766
1767 if (rotation == FB_ROTATE_CW ||
1768 rotation == FB_ROTATE_CCW) {
1769 var->xres = h;
1770 var->yres = w;
1771 } else {
1772 var->xres = w;
1773 var->yres = h;
1774 }
1775
1776 var->xres_virtual = var->xres;
1777 var->yres_virtual = var->yres;
1778
1779 if (!var->bits_per_pixel) {
1780 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1781 case 16:
1782 var->bits_per_pixel = 16;
1783 break;
1784 case 24:
1785 var->bits_per_pixel = 32;
1786 break;
1787 default:
1788 dev_err(fbdev->dev, "illegal display "
1789 "bpp\n");
1790 return -EINVAL;
1791 }
1792 }
1793 } else {
1794 /* if there's no display, let's just guess some basic values */
1795 var->xres = 320;
1796 var->yres = 240;
1797 var->xres_virtual = var->xres;
1798 var->yres_virtual = var->yres;
1799 if (!var->bits_per_pixel)
1800 var->bits_per_pixel = 16;
1801 }
1802
1803 r = check_fb_var(fbi, var);
1804 if (r)
1805 goto err;
1806
1807 set_fb_fix(fbi);
1808 r = setup_vrfb_rotation(fbi);
1809 if (r)
1810 goto err;
1811
1812 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1813 if (r)
1814 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1815
1816err:
1817 return r;
1818}
1819
1820static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1821{
1822 fb_dealloc_cmap(&fbi->cmap);
1823}
1824
1825
1826static void omapfb_free_resources(struct omapfb2_device *fbdev)
1827{
1828 int i;
1829
1830 DBG("free_resources\n");
1831
1832 if (fbdev == NULL)
1833 return;
1834
1835 for (i = 0; i < fbdev->num_fbs; i++)
1836 unregister_framebuffer(fbdev->fbs[i]);
1837
1838 /* free the reserved fbmem */
1839 omapfb_free_all_fbmem(fbdev);
1840
1841 for (i = 0; i < fbdev->num_fbs; i++) {
1842 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1843 framebuffer_release(fbdev->fbs[i]);
1844 }
1845
1846 for (i = 0; i < fbdev->num_displays; i++) {
1847 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1848
1849 if (fbdev->displays[i].auto_update_work_enabled)
1850 omapfb_stop_auto_update(fbdev, dssdev);
1851
1852 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1853 dssdev->driver->disable(dssdev);
1854
1855 omap_dss_put_device(dssdev);
1856 }
1857
1858 if (fbdev->auto_update_wq != NULL) {
1859 flush_workqueue(fbdev->auto_update_wq);
1860 destroy_workqueue(fbdev->auto_update_wq);
1861 fbdev->auto_update_wq = NULL;
1862 }
1863
1864 dev_set_drvdata(fbdev->dev, NULL);
1865 kfree(fbdev);
1866}
1867
1868static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1869{
1870 int r, i;
1871
1872 fbdev->num_fbs = 0;
1873
1874 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1875
1876 /* allocate fb_infos */
1877 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1878 struct fb_info *fbi;
1879 struct omapfb_info *ofbi;
1880
1881 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1882 fbdev->dev);
1883
1884 if (fbi == NULL) {
1885 dev_err(fbdev->dev,
1886 "unable to allocate memory for plane info\n");
1887 return -ENOMEM;
1888 }
1889
1890 clear_fb_info(fbi);
1891
1892 fbdev->fbs[i] = fbi;
1893
1894 ofbi = FB2OFB(fbi);
1895 ofbi->fbdev = fbdev;
1896 ofbi->id = i;
1897
1898 ofbi->region = &fbdev->regions[i];
1899 ofbi->region->id = i;
1900 init_rwsem(&ofbi->region->lock);
1901
1902 /* assign these early, so that fb alloc can use them */
1903 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1904 OMAP_DSS_ROT_DMA;
1905 ofbi->mirror = def_mirror;
1906
1907 fbdev->num_fbs++;
1908 }
1909
1910 DBG("fb_infos allocated\n");
1911
1912 /* assign overlays for the fbs */
1913 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1914 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1915
1916 ofbi->overlays[0] = fbdev->overlays[i];
1917 ofbi->num_overlays = 1;
1918 }
1919
1920 /* allocate fb memories */
1921 r = omapfb_allocate_all_fbs(fbdev);
1922 if (r) {
1923 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1924 return r;
1925 }
1926
1927 DBG("fbmems allocated\n");
1928
1929 /* setup fb_infos */
1930 for (i = 0; i < fbdev->num_fbs; i++) {
1931 struct fb_info *fbi = fbdev->fbs[i];
1932 struct omapfb_info *ofbi = FB2OFB(fbi);
1933
1934 omapfb_get_mem_region(ofbi->region);
1935 r = omapfb_fb_init(fbdev, fbi);
1936 omapfb_put_mem_region(ofbi->region);
1937
1938 if (r) {
1939 dev_err(fbdev->dev, "failed to setup fb_info\n");
1940 return r;
1941 }
1942 }
1943
1944 DBG("fb_infos initialized\n");
1945
1946 for (i = 0; i < fbdev->num_fbs; i++) {
1947 r = register_framebuffer(fbdev->fbs[i]);
1948 if (r != 0) {
1949 dev_err(fbdev->dev,
1950 "registering framebuffer %d failed\n", i);
1951 return r;
1952 }
1953 }
1954
1955 DBG("framebuffers registered\n");
1956
1957 for (i = 0; i < fbdev->num_fbs; i++) {
1958 struct fb_info *fbi = fbdev->fbs[i];
1959 struct omapfb_info *ofbi = FB2OFB(fbi);
1960
1961 omapfb_get_mem_region(ofbi->region);
1962 r = omapfb_apply_changes(fbi, 1);
1963 omapfb_put_mem_region(ofbi->region);
1964
1965 if (r) {
1966 dev_err(fbdev->dev, "failed to change mode\n");
1967 return r;
1968 }
1969 }
1970
1971 /* Enable fb0 */
1972 if (fbdev->num_fbs > 0) {
1973 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1974
1975 if (ofbi->num_overlays > 0) {
1976 struct omap_overlay *ovl = ofbi->overlays[0];
1977
1978 ovl->manager->apply(ovl->manager);
1979
1980 r = omapfb_overlay_enable(ovl, 1);
1981
1982 if (r) {
1983 dev_err(fbdev->dev,
1984 "failed to enable overlay\n");
1985 return r;
1986 }
1987 }
1988 }
1989
1990 DBG("create_framebuffers done\n");
1991
1992 return 0;
1993}
1994
1995static int omapfb_mode_to_timings(const char *mode_str,
1996 struct omap_video_timings *timings, u8 *bpp)
1997{
1998 struct fb_info *fbi;
1999 struct fb_var_screeninfo *var;
2000 struct fb_ops *fbops;
2001 int r;
2002
2003#ifdef CONFIG_OMAP2_DSS_VENC
2004 if (strcmp(mode_str, "pal") == 0) {
2005 *timings = omap_dss_pal_timings;
2006 *bpp = 24;
2007 return 0;
2008 } else if (strcmp(mode_str, "ntsc") == 0) {
2009 *timings = omap_dss_ntsc_timings;
2010 *bpp = 24;
2011 return 0;
2012 }
2013#endif
2014
2015 /* this is quite a hack, but I wanted to use the modedb and for
2016 * that we need fb_info and var, so we create dummy ones */
2017
2018 *bpp = 0;
2019 fbi = NULL;
2020 var = NULL;
2021 fbops = NULL;
2022
2023 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2024 if (fbi == NULL) {
2025 r = -ENOMEM;
2026 goto err;
2027 }
2028
2029 var = kzalloc(sizeof(*var), GFP_KERNEL);
2030 if (var == NULL) {
2031 r = -ENOMEM;
2032 goto err;
2033 }
2034
2035 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2036 if (fbops == NULL) {
2037 r = -ENOMEM;
2038 goto err;
2039 }
2040
2041 fbi->fbops = fbops;
2042
2043 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2044 if (r == 0) {
2045 r = -EINVAL;
2046 goto err;
2047 }
2048
2049 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2050 timings->hbp = var->left_margin;
2051 timings->hfp = var->right_margin;
2052 timings->vbp = var->upper_margin;
2053 timings->vfp = var->lower_margin;
2054 timings->hsw = var->hsync_len;
2055 timings->vsw = var->vsync_len;
2056 timings->x_res = var->xres;
2057 timings->y_res = var->yres;
2058
2059 switch (var->bits_per_pixel) {
2060 case 16:
2061 *bpp = 16;
2062 break;
2063 case 24:
2064 case 32:
2065 default:
2066 *bpp = 24;
2067 break;
2068 }
2069
2070 r = 0;
2071
2072err:
2073 kfree(fbi);
2074 kfree(var);
2075 kfree(fbops);
2076
2077 return r;
2078}
2079
2080static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2081 struct omap_dss_device *display, char *mode_str)
2082{
2083 int r;
2084 u8 bpp;
2085 struct omap_video_timings timings, temp_timings;
2086 struct omapfb_display_data *d;
2087
2088 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2089 if (r)
2090 return r;
2091
2092 d = get_display_data(fbdev, display);
2093 d->bpp_override = bpp;
2094
2095 if (display->driver->check_timings) {
2096 r = display->driver->check_timings(display, &timings);
2097 if (r)
2098 return r;
2099 } else {
2100 /* If check_timings is not present compare xres and yres */
2101 if (display->driver->get_timings) {
2102 display->driver->get_timings(display, &temp_timings);
2103
2104 if (temp_timings.x_res != timings.x_res ||
2105 temp_timings.y_res != timings.y_res)
2106 return -EINVAL;
2107 }
2108 }
2109
2110 if (display->driver->set_timings)
2111 display->driver->set_timings(display, &timings);
2112
2113 return 0;
2114}
2115
2116static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2117 struct omap_dss_device *dssdev)
2118{
2119 struct omapfb_display_data *d;
2120
2121 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2122
2123 d = get_display_data(fbdev, dssdev);
2124
2125 if (d->bpp_override != 0)
2126 return d->bpp_override;
2127
2128 return dssdev->driver->get_recommended_bpp(dssdev);
2129}
2130
2131static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2132{
2133 char *str, *options, *this_opt;
2134 int r = 0;
2135
2136 str = kstrdup(def_mode, GFP_KERNEL);
2137 if (!str)
2138 return -ENOMEM;
2139 options = str;
2140
2141 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2142 char *p, *display_str, *mode_str;
2143 struct omap_dss_device *display;
2144 int i;
2145
2146 p = strchr(this_opt, ':');
2147 if (!p) {
2148 r = -EINVAL;
2149 break;
2150 }
2151
2152 *p = 0;
2153 display_str = this_opt;
2154 mode_str = p + 1;
2155
2156 display = NULL;
2157 for (i = 0; i < fbdev->num_displays; ++i) {
2158 if (strcmp(fbdev->displays[i].dssdev->name,
2159 display_str) == 0) {
2160 display = fbdev->displays[i].dssdev;
2161 break;
2162 }
2163 }
2164
2165 if (!display) {
2166 r = -EINVAL;
2167 break;
2168 }
2169
2170 r = omapfb_set_def_mode(fbdev, display, mode_str);
2171 if (r)
2172 break;
2173 }
2174
2175 kfree(str);
2176
2177 return r;
2178}
2179
2180static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2181 struct omap_video_timings *t)
2182{
2183 t->x_res = m->xres;
2184 t->y_res = m->yres;
2185 t->pixel_clock = PICOS2KHZ(m->pixclock);
2186 t->hsw = m->hsync_len;
2187 t->hfp = m->right_margin;
2188 t->hbp = m->left_margin;
2189 t->vsw = m->vsync_len;
2190 t->vfp = m->lower_margin;
2191 t->vbp = m->upper_margin;
2192}
2193
2194static int omapfb_find_best_mode(struct omap_dss_device *display,
2195 struct omap_video_timings *timings)
2196{
2197 struct fb_monspecs *specs;
2198 u8 *edid;
2199 int r, i, best_xres, best_idx, len;
2200
2201 if (!display->driver->read_edid)
2202 return -ENODEV;
2203
2204 len = 0x80 * 2;
2205 edid = kmalloc(len, GFP_KERNEL);
2206
2207 r = display->driver->read_edid(display, edid, len);
2208 if (r < 0)
2209 goto err1;
2210
2211 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2212
2213 fb_edid_to_monspecs(edid, specs);
2214
2215 if (edid[126] > 0)
2216 fb_edid_add_monspecs(edid + 0x80, specs);
2217
2218 best_xres = 0;
2219 best_idx = -1;
2220
2221 for (i = 0; i < specs->modedb_len; ++i) {
2222 struct fb_videomode *m;
2223 struct omap_video_timings t;
2224
2225 m = &specs->modedb[i];
2226
2227 if (m->pixclock == 0)
2228 continue;
2229
2230 /* skip repeated pixel modes */
2231 if (m->xres == 2880 || m->xres == 1440)
2232 continue;
2233
2234 fb_videomode_to_omap_timings(m, &t);
2235
2236 r = display->driver->check_timings(display, &t);
2237 if (r == 0 && best_xres < m->xres) {
2238 best_xres = m->xres;
2239 best_idx = i;
2240 }
2241 }
2242
2243 if (best_xres == 0) {
2244 r = -ENOENT;
2245 goto err2;
2246 }
2247
2248 fb_videomode_to_omap_timings(&specs->modedb[best_idx], timings);
2249
2250 r = 0;
2251
2252err2:
2253 fb_destroy_modedb(specs->modedb);
2254 kfree(specs);
2255err1:
2256 kfree(edid);
2257
2258 return r;
2259}
2260
2261static int omapfb_init_display(struct omapfb2_device *fbdev,
2262 struct omap_dss_device *dssdev)
2263{
2264 struct omap_dss_driver *dssdrv = dssdev->driver;
2265 struct omapfb_display_data *d;
2266 int r;
2267
2268 r = dssdrv->enable(dssdev);
2269 if (r) {
2270 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2271 dssdev->name);
2272 return r;
2273 }
2274
2275 d = get_display_data(fbdev, dssdev);
2276
2277 d->fbdev = fbdev;
2278
2279 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2280 u16 w, h;
2281
2282 if (auto_update) {
2283 omapfb_start_auto_update(fbdev, dssdev);
2284 d->update_mode = OMAPFB_AUTO_UPDATE;
2285 } else {
2286 d->update_mode = OMAPFB_MANUAL_UPDATE;
2287 }
2288
2289 if (dssdrv->enable_te) {
2290 r = dssdrv->enable_te(dssdev, 1);
2291 if (r) {
2292 dev_err(fbdev->dev, "Failed to set TE\n");
2293 return r;
2294 }
2295 }
2296
2297 dssdrv->get_resolution(dssdev, &w, &h);
2298 r = dssdrv->update(dssdev, 0, 0, w, h);
2299 if (r) {
2300 dev_err(fbdev->dev,
2301 "Failed to update display\n");
2302 return r;
2303 }
2304 } else {
2305 d->update_mode = OMAPFB_AUTO_UPDATE;
2306 }
2307
2308 return 0;
2309}
2310
2311static int __init omapfb_probe(struct platform_device *pdev)
2312{
2313 struct omapfb2_device *fbdev = NULL;
2314 int r = 0;
2315 int i;
2316 struct omap_overlay *ovl;
2317 struct omap_dss_device *def_display;
2318 struct omap_dss_device *dssdev;
2319
2320 DBG("omapfb_probe\n");
2321
2322 if (pdev->num_resources != 0) {
2323 dev_err(&pdev->dev, "probed for an unknown device\n");
2324 r = -ENODEV;
2325 goto err0;
2326 }
2327
2328 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2329 if (fbdev == NULL) {
2330 r = -ENOMEM;
2331 goto err0;
2332 }
2333
2334 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2335 * available for OMAP2 and OMAP3
2336 */
2337 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2338 def_vrfb = 0;
2339 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2340 "ignoring the module parameter vrfb=y\n");
2341 }
2342
2343
2344 mutex_init(&fbdev->mtx);
2345
2346 fbdev->dev = &pdev->dev;
2347 platform_set_drvdata(pdev, fbdev);
2348
2349 r = 0;
2350 fbdev->num_displays = 0;
2351 dssdev = NULL;
2352 for_each_dss_dev(dssdev) {
2353 struct omapfb_display_data *d;
2354
2355 omap_dss_get_device(dssdev);
2356
2357 if (!dssdev->driver) {
2358 dev_warn(&pdev->dev, "no driver for display: %s\n",
2359 dssdev->name);
2360 omap_dss_put_device(dssdev);
2361 continue;
2362 }
2363
2364 d = &fbdev->displays[fbdev->num_displays++];
2365 d->dssdev = dssdev;
2366 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2367 d->update_mode = OMAPFB_MANUAL_UPDATE;
2368 else
2369 d->update_mode = OMAPFB_AUTO_UPDATE;
2370 }
2371
2372 if (r)
2373 goto cleanup;
2374
2375 if (fbdev->num_displays == 0) {
2376 dev_err(&pdev->dev, "no displays\n");
2377 r = -EINVAL;
2378 goto cleanup;
2379 }
2380
2381 fbdev->num_overlays = omap_dss_get_num_overlays();
2382 for (i = 0; i < fbdev->num_overlays; i++)
2383 fbdev->overlays[i] = omap_dss_get_overlay(i);
2384
2385 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2386 for (i = 0; i < fbdev->num_managers; i++)
2387 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2388
2389 /* gfx overlay should be the default one. find a display
2390 * connected to that, and use it as default display */
2391 ovl = omap_dss_get_overlay(0);
2392 if (ovl->manager && ovl->manager->device) {
2393 def_display = ovl->manager->device;
2394 } else {
2395 dev_warn(&pdev->dev, "cannot find default display\n");
2396 def_display = NULL;
2397 }
2398
2399 if (def_mode && strlen(def_mode) > 0) {
2400 if (omapfb_parse_def_modes(fbdev))
2401 dev_warn(&pdev->dev, "cannot parse default modes\n");
2402 } else if (def_display && def_display->driver->set_timings &&
2403 def_display->driver->check_timings) {
2404 struct omap_video_timings t;
2405
2406 r = omapfb_find_best_mode(def_display, &t);
2407
2408 if (r == 0)
2409 def_display->driver->set_timings(def_display, &t);
2410 }
2411
2412 r = omapfb_create_framebuffers(fbdev);
2413 if (r)
2414 goto cleanup;
2415
2416 for (i = 0; i < fbdev->num_managers; i++) {
2417 struct omap_overlay_manager *mgr;
2418 mgr = fbdev->managers[i];
2419 r = mgr->apply(mgr);
2420 if (r)
2421 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2422 }
2423
2424 DBG("mgr->apply'ed\n");
2425
2426 if (def_display) {
2427 r = omapfb_init_display(fbdev, def_display);
2428 if (r) {
2429 dev_err(fbdev->dev,
2430 "failed to initialize default "
2431 "display\n");
2432 goto cleanup;
2433 }
2434 }
2435
2436 DBG("create sysfs for fbs\n");
2437 r = omapfb_create_sysfs(fbdev);
2438 if (r) {
2439 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2440 goto cleanup;
2441 }
2442
2443 return 0;
2444
2445cleanup:
2446 omapfb_free_resources(fbdev);
2447err0:
2448 dev_err(&pdev->dev, "failed to setup omapfb\n");
2449 return r;
2450}
2451
2452static int __exit omapfb_remove(struct platform_device *pdev)
2453{
2454 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2455
2456 /* FIXME: wait till completion of pending events */
2457
2458 omapfb_remove_sysfs(fbdev);
2459
2460 omapfb_free_resources(fbdev);
2461
2462 return 0;
2463}
2464
2465static struct platform_driver omapfb_driver = {
2466 .remove = __exit_p(omapfb_remove),
2467 .driver = {
2468 .name = "omapfb",
2469 .owner = THIS_MODULE,
2470 },
2471};
2472
2473static int __init omapfb_init(void)
2474{
2475 DBG("omapfb_init\n");
2476
2477 if (platform_driver_probe(&omapfb_driver, omapfb_probe)) {
2478 printk(KERN_ERR "failed to register omapfb driver\n");
2479 return -ENODEV;
2480 }
2481
2482 return 0;
2483}
2484
2485static void __exit omapfb_exit(void)
2486{
2487 DBG("omapfb_exit\n");
2488 platform_driver_unregister(&omapfb_driver);
2489}
2490
2491module_param_named(mode, def_mode, charp, 0);
2492module_param_named(vram, def_vram, charp, 0);
2493module_param_named(rotate, def_rotate, int, 0);
2494module_param_named(vrfb, def_vrfb, bool, 0);
2495module_param_named(mirror, def_mirror, bool, 0);
2496
2497/* late_initcall to let panel/ctrl drivers loaded first.
2498 * I guess better option would be a more dynamic approach,
2499 * so that omapfb reacts to new panels when they are loaded */
2500late_initcall(omapfb_init);
2501/*module_init(omapfb_init);*/
2502module_exit(omapfb_exit);
2503
2504MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2505MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2506MODULE_LICENSE("GPL v2");