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Merge branch 'fbdev-3.10-fixes' of git://gitorious.org/linux-omap-dss2/linux into...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / video / omap2 / omapfb / omapfb-main.c
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 <video/omapvrfb.h>
35
36 #include "omapfb.h"
37
38 #define MODULE_NAME "omapfb"
39
40 #define OMAPFB_PLANE_XRES_MIN 8
41 #define OMAPFB_PLANE_YRES_MIN 8
42
43 static char *def_mode;
44 static char *def_vram;
45 static bool def_vrfb;
46 static int def_rotate;
47 static bool def_mirror;
48 static bool auto_update;
49 static unsigned int auto_update_freq;
50 module_param(auto_update, bool, 0);
51 module_param(auto_update_freq, uint, 0644);
52
53 #ifdef DEBUG
54 bool omapfb_debug;
55 module_param_named(debug, omapfb_debug, bool, 0644);
56 static bool omapfb_test_pattern;
57 module_param_named(test, omapfb_test_pattern, bool, 0644);
58 #endif
59
60 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
61 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
62 struct omap_dss_device *dssdev);
63
64 #ifdef DEBUG
65 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
66 {
67 struct fb_var_screeninfo *var = &fbi->var;
68 struct fb_fix_screeninfo *fix = &fbi->fix;
69 void __iomem *addr = fbi->screen_base;
70 const unsigned bytespp = var->bits_per_pixel >> 3;
71 const unsigned line_len = fix->line_length / bytespp;
72
73 int r = (color >> 16) & 0xff;
74 int g = (color >> 8) & 0xff;
75 int b = (color >> 0) & 0xff;
76
77 if (var->bits_per_pixel == 16) {
78 u16 __iomem *p = (u16 __iomem *)addr;
79 p += y * line_len + x;
80
81 r = r * 32 / 256;
82 g = g * 64 / 256;
83 b = b * 32 / 256;
84
85 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
86 } else if (var->bits_per_pixel == 24) {
87 u8 __iomem *p = (u8 __iomem *)addr;
88 p += (y * line_len + x) * 3;
89
90 __raw_writeb(b, p + 0);
91 __raw_writeb(g, p + 1);
92 __raw_writeb(r, p + 2);
93 } else if (var->bits_per_pixel == 32) {
94 u32 __iomem *p = (u32 __iomem *)addr;
95 p += y * line_len + x;
96 __raw_writel(color, p);
97 }
98 }
99
100 static void fill_fb(struct fb_info *fbi)
101 {
102 struct fb_var_screeninfo *var = &fbi->var;
103 const short w = var->xres_virtual;
104 const short h = var->yres_virtual;
105 void __iomem *addr = fbi->screen_base;
106 int y, x;
107
108 if (!addr)
109 return;
110
111 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
112
113 for (y = 0; y < h; y++) {
114 for (x = 0; x < w; x++) {
115 if (x < 20 && y < 20)
116 draw_pixel(fbi, x, y, 0xffffff);
117 else if (x < 20 && (y > 20 && y < h - 20))
118 draw_pixel(fbi, x, y, 0xff);
119 else if (y < 20 && (x > 20 && x < w - 20))
120 draw_pixel(fbi, x, y, 0xff00);
121 else if (x > w - 20 && (y > 20 && y < h - 20))
122 draw_pixel(fbi, x, y, 0xff0000);
123 else if (y > h - 20 && (x > 20 && x < w - 20))
124 draw_pixel(fbi, x, y, 0xffff00);
125 else if (x == 20 || x == w - 20 ||
126 y == 20 || y == h - 20)
127 draw_pixel(fbi, x, y, 0xffffff);
128 else if (x == y || w - x == h - y)
129 draw_pixel(fbi, x, y, 0xff00ff);
130 else if (w - x == y || x == h - y)
131 draw_pixel(fbi, x, y, 0x00ffff);
132 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
133 int t = x * 3 / w;
134 unsigned r = 0, g = 0, b = 0;
135 unsigned c;
136 if (var->bits_per_pixel == 16) {
137 if (t == 0)
138 b = (y % 32) * 256 / 32;
139 else if (t == 1)
140 g = (y % 64) * 256 / 64;
141 else if (t == 2)
142 r = (y % 32) * 256 / 32;
143 } else {
144 if (t == 0)
145 b = (y % 256);
146 else if (t == 1)
147 g = (y % 256);
148 else if (t == 2)
149 r = (y % 256);
150 }
151 c = (r << 16) | (g << 8) | (b << 0);
152 draw_pixel(fbi, x, y, c);
153 } else {
154 draw_pixel(fbi, x, y, 0);
155 }
156 }
157 }
158 }
159 #endif
160
161 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
162 {
163 const struct vrfb *vrfb = &ofbi->region->vrfb;
164 unsigned offset;
165
166 switch (rot) {
167 case FB_ROTATE_UR:
168 offset = 0;
169 break;
170 case FB_ROTATE_CW:
171 offset = vrfb->yoffset;
172 break;
173 case FB_ROTATE_UD:
174 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
175 break;
176 case FB_ROTATE_CCW:
177 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
178 break;
179 default:
180 BUG();
181 return 0;
182 }
183
184 offset *= vrfb->bytespp;
185
186 return offset;
187 }
188
189 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
190 {
191 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
192 return ofbi->region->vrfb.paddr[rot]
193 + omapfb_get_vrfb_offset(ofbi, rot);
194 } else {
195 return ofbi->region->paddr;
196 }
197 }
198
199 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
200 {
201 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
202 return ofbi->region->vrfb.paddr[0];
203 else
204 return ofbi->region->paddr;
205 }
206
207 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
208 {
209 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
210 return ofbi->region->vrfb.vaddr[0];
211 else
212 return ofbi->region->vaddr;
213 }
214
215 static struct omapfb_colormode omapfb_colormodes[] = {
216 {
217 .dssmode = OMAP_DSS_COLOR_UYVY,
218 .bits_per_pixel = 16,
219 .nonstd = OMAPFB_COLOR_YUV422,
220 }, {
221 .dssmode = OMAP_DSS_COLOR_YUV2,
222 .bits_per_pixel = 16,
223 .nonstd = OMAPFB_COLOR_YUY422,
224 }, {
225 .dssmode = OMAP_DSS_COLOR_ARGB16,
226 .bits_per_pixel = 16,
227 .red = { .length = 4, .offset = 8, .msb_right = 0 },
228 .green = { .length = 4, .offset = 4, .msb_right = 0 },
229 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
230 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
231 }, {
232 .dssmode = OMAP_DSS_COLOR_RGB16,
233 .bits_per_pixel = 16,
234 .red = { .length = 5, .offset = 11, .msb_right = 0 },
235 .green = { .length = 6, .offset = 5, .msb_right = 0 },
236 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
237 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
238 }, {
239 .dssmode = OMAP_DSS_COLOR_RGB24P,
240 .bits_per_pixel = 24,
241 .red = { .length = 8, .offset = 16, .msb_right = 0 },
242 .green = { .length = 8, .offset = 8, .msb_right = 0 },
243 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
244 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
245 }, {
246 .dssmode = OMAP_DSS_COLOR_RGB24U,
247 .bits_per_pixel = 32,
248 .red = { .length = 8, .offset = 16, .msb_right = 0 },
249 .green = { .length = 8, .offset = 8, .msb_right = 0 },
250 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
251 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
252 }, {
253 .dssmode = OMAP_DSS_COLOR_ARGB32,
254 .bits_per_pixel = 32,
255 .red = { .length = 8, .offset = 16, .msb_right = 0 },
256 .green = { .length = 8, .offset = 8, .msb_right = 0 },
257 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
258 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
259 }, {
260 .dssmode = OMAP_DSS_COLOR_RGBA32,
261 .bits_per_pixel = 32,
262 .red = { .length = 8, .offset = 24, .msb_right = 0 },
263 .green = { .length = 8, .offset = 16, .msb_right = 0 },
264 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
265 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
266 }, {
267 .dssmode = OMAP_DSS_COLOR_RGBX32,
268 .bits_per_pixel = 32,
269 .red = { .length = 8, .offset = 24, .msb_right = 0 },
270 .green = { .length = 8, .offset = 16, .msb_right = 0 },
271 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
272 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
273 },
274 };
275
276 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
277 struct omapfb_colormode *color)
278 {
279 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
280 {
281 return f1->length == f2->length &&
282 f1->offset == f2->offset &&
283 f1->msb_right == f2->msb_right;
284 }
285
286 if (var->bits_per_pixel == 0 ||
287 var->red.length == 0 ||
288 var->blue.length == 0 ||
289 var->green.length == 0)
290 return 0;
291
292 return var->bits_per_pixel == color->bits_per_pixel &&
293 cmp_component(&var->red, &color->red) &&
294 cmp_component(&var->green, &color->green) &&
295 cmp_component(&var->blue, &color->blue) &&
296 cmp_component(&var->transp, &color->transp);
297 }
298
299 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
300 struct omapfb_colormode *color)
301 {
302 var->bits_per_pixel = color->bits_per_pixel;
303 var->nonstd = color->nonstd;
304 var->red = color->red;
305 var->green = color->green;
306 var->blue = color->blue;
307 var->transp = color->transp;
308 }
309
310 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
311 enum omap_color_mode *mode)
312 {
313 enum omap_color_mode dssmode;
314 int i;
315
316 /* first match with nonstd field */
317 if (var->nonstd) {
318 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
319 struct omapfb_colormode *m = &omapfb_colormodes[i];
320 if (var->nonstd == m->nonstd) {
321 assign_colormode_to_var(var, m);
322 *mode = m->dssmode;
323 return 0;
324 }
325 }
326
327 return -EINVAL;
328 }
329
330 /* then try exact match of bpp and colors */
331 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
332 struct omapfb_colormode *m = &omapfb_colormodes[i];
333 if (cmp_var_to_colormode(var, m)) {
334 assign_colormode_to_var(var, m);
335 *mode = m->dssmode;
336 return 0;
337 }
338 }
339
340 /* match with bpp if user has not filled color fields
341 * properly */
342 switch (var->bits_per_pixel) {
343 case 1:
344 dssmode = OMAP_DSS_COLOR_CLUT1;
345 break;
346 case 2:
347 dssmode = OMAP_DSS_COLOR_CLUT2;
348 break;
349 case 4:
350 dssmode = OMAP_DSS_COLOR_CLUT4;
351 break;
352 case 8:
353 dssmode = OMAP_DSS_COLOR_CLUT8;
354 break;
355 case 12:
356 dssmode = OMAP_DSS_COLOR_RGB12U;
357 break;
358 case 16:
359 dssmode = OMAP_DSS_COLOR_RGB16;
360 break;
361 case 24:
362 dssmode = OMAP_DSS_COLOR_RGB24P;
363 break;
364 case 32:
365 dssmode = OMAP_DSS_COLOR_RGB24U;
366 break;
367 default:
368 return -EINVAL;
369 }
370
371 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
372 struct omapfb_colormode *m = &omapfb_colormodes[i];
373 if (dssmode == m->dssmode) {
374 assign_colormode_to_var(var, m);
375 *mode = m->dssmode;
376 return 0;
377 }
378 }
379
380 return -EINVAL;
381 }
382
383 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
384 {
385 int xres_min = OMAPFB_PLANE_XRES_MIN;
386 int xres_max = 2048;
387 int yres_min = OMAPFB_PLANE_YRES_MIN;
388 int yres_max = 2048;
389
390 /* XXX: some applications seem to set virtual res to 0. */
391 if (var->xres_virtual == 0)
392 var->xres_virtual = var->xres;
393
394 if (var->yres_virtual == 0)
395 var->yres_virtual = var->yres;
396
397 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
398 return -EINVAL;
399
400 if (var->xres < xres_min)
401 var->xres = xres_min;
402 if (var->yres < yres_min)
403 var->yres = yres_min;
404 if (var->xres > xres_max)
405 var->xres = xres_max;
406 if (var->yres > yres_max)
407 var->yres = yres_max;
408
409 if (var->xres > var->xres_virtual)
410 var->xres = var->xres_virtual;
411 if (var->yres > var->yres_virtual)
412 var->yres = var->yres_virtual;
413
414 return 0;
415 }
416
417 static void shrink_height(unsigned long max_frame_size,
418 struct fb_var_screeninfo *var)
419 {
420 DBG("can't fit FB into memory, reducing y\n");
421 var->yres_virtual = max_frame_size /
422 (var->xres_virtual * var->bits_per_pixel >> 3);
423
424 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
425 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
426
427 if (var->yres > var->yres_virtual)
428 var->yres = var->yres_virtual;
429 }
430
431 static void shrink_width(unsigned long max_frame_size,
432 struct fb_var_screeninfo *var)
433 {
434 DBG("can't fit FB into memory, reducing x\n");
435 var->xres_virtual = max_frame_size / var->yres_virtual /
436 (var->bits_per_pixel >> 3);
437
438 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
439 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
440
441 if (var->xres > var->xres_virtual)
442 var->xres = var->xres_virtual;
443 }
444
445 static int check_vrfb_fb_size(unsigned long region_size,
446 const struct fb_var_screeninfo *var)
447 {
448 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
449 var->yres_virtual, var->bits_per_pixel >> 3);
450
451 return min_phys_size > region_size ? -EINVAL : 0;
452 }
453
454 static int check_fb_size(const struct omapfb_info *ofbi,
455 struct fb_var_screeninfo *var)
456 {
457 unsigned long max_frame_size = ofbi->region->size;
458 int bytespp = var->bits_per_pixel >> 3;
459 unsigned long line_size = var->xres_virtual * bytespp;
460
461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
462 /* One needs to check for both VRFB and OMAPFB limitations. */
463 if (check_vrfb_fb_size(max_frame_size, var))
464 shrink_height(omap_vrfb_max_height(
465 max_frame_size, var->xres_virtual, bytespp) *
466 line_size, var);
467
468 if (check_vrfb_fb_size(max_frame_size, var)) {
469 DBG("cannot fit FB to memory\n");
470 return -EINVAL;
471 }
472
473 return 0;
474 }
475
476 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
477
478 if (line_size * var->yres_virtual > max_frame_size)
479 shrink_height(max_frame_size, var);
480
481 if (line_size * var->yres_virtual > max_frame_size) {
482 shrink_width(max_frame_size, var);
483 line_size = var->xres_virtual * bytespp;
484 }
485
486 if (line_size * var->yres_virtual > max_frame_size) {
487 DBG("cannot fit FB to memory\n");
488 return -EINVAL;
489 }
490
491 return 0;
492 }
493
494 /*
495 * Consider if VRFB assisted rotation is in use and if the virtual space for
496 * the zero degree view needs to be mapped. The need for mapping also acts as
497 * the trigger for setting up the hardware on the context in question. This
498 * ensures that one does not attempt to access the virtual view before the
499 * hardware is serving the address translations.
500 */
501 static int setup_vrfb_rotation(struct fb_info *fbi)
502 {
503 struct omapfb_info *ofbi = FB2OFB(fbi);
504 struct omapfb2_mem_region *rg = ofbi->region;
505 struct vrfb *vrfb = &rg->vrfb;
506 struct fb_var_screeninfo *var = &fbi->var;
507 struct fb_fix_screeninfo *fix = &fbi->fix;
508 unsigned bytespp;
509 bool yuv_mode;
510 enum omap_color_mode mode;
511 int r;
512 bool reconf;
513
514 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
515 return 0;
516
517 DBG("setup_vrfb_rotation\n");
518
519 r = fb_mode_to_dss_mode(var, &mode);
520 if (r)
521 return r;
522
523 bytespp = var->bits_per_pixel >> 3;
524
525 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
526
527 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
528 * is enabled/disabled, or if bytes per pixel changes */
529
530 /* XXX we shouldn't allow this when framebuffer is mmapped */
531
532 reconf = false;
533
534 if (yuv_mode != vrfb->yuv_mode)
535 reconf = true;
536 else if (bytespp != vrfb->bytespp)
537 reconf = true;
538 else if (vrfb->xres != var->xres_virtual ||
539 vrfb->yres != var->yres_virtual)
540 reconf = true;
541
542 if (vrfb->vaddr[0] && reconf) {
543 fbi->screen_base = NULL;
544 fix->smem_start = 0;
545 fix->smem_len = 0;
546 iounmap(vrfb->vaddr[0]);
547 vrfb->vaddr[0] = NULL;
548 DBG("setup_vrfb_rotation: reset fb\n");
549 }
550
551 if (vrfb->vaddr[0])
552 return 0;
553
554 omap_vrfb_setup(&rg->vrfb, rg->paddr,
555 var->xres_virtual,
556 var->yres_virtual,
557 bytespp, yuv_mode);
558
559 /* Now one can ioremap the 0 angle view */
560 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
561 if (r)
562 return r;
563
564 /* used by open/write in fbmem.c */
565 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
566
567 fix->smem_start = ofbi->region->vrfb.paddr[0];
568
569 switch (var->nonstd) {
570 case OMAPFB_COLOR_YUV422:
571 case OMAPFB_COLOR_YUY422:
572 fix->line_length =
573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
574 break;
575 default:
576 fix->line_length =
577 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
578 break;
579 }
580
581 fix->smem_len = var->yres_virtual * fix->line_length;
582
583 return 0;
584 }
585
586 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
587 struct fb_var_screeninfo *var)
588 {
589 int i;
590
591 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
592 struct omapfb_colormode *mode = &omapfb_colormodes[i];
593 if (dssmode == mode->dssmode) {
594 assign_colormode_to_var(var, mode);
595 return 0;
596 }
597 }
598 return -ENOENT;
599 }
600
601 void set_fb_fix(struct fb_info *fbi)
602 {
603 struct fb_fix_screeninfo *fix = &fbi->fix;
604 struct fb_var_screeninfo *var = &fbi->var;
605 struct omapfb_info *ofbi = FB2OFB(fbi);
606 struct omapfb2_mem_region *rg = ofbi->region;
607
608 DBG("set_fb_fix\n");
609
610 /* used by open/write in fbmem.c */
611 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
612
613 /* used by mmap in fbmem.c */
614 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
615 switch (var->nonstd) {
616 case OMAPFB_COLOR_YUV422:
617 case OMAPFB_COLOR_YUY422:
618 fix->line_length =
619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
620 break;
621 default:
622 fix->line_length =
623 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
624 break;
625 }
626
627 fix->smem_len = var->yres_virtual * fix->line_length;
628 } else {
629 fix->line_length =
630 (var->xres_virtual * var->bits_per_pixel) >> 3;
631 fix->smem_len = rg->size;
632 }
633
634 fix->smem_start = omapfb_get_region_paddr(ofbi);
635
636 fix->type = FB_TYPE_PACKED_PIXELS;
637
638 if (var->nonstd)
639 fix->visual = FB_VISUAL_PSEUDOCOLOR;
640 else {
641 switch (var->bits_per_pixel) {
642 case 32:
643 case 24:
644 case 16:
645 case 12:
646 fix->visual = FB_VISUAL_TRUECOLOR;
647 /* 12bpp is stored in 16 bits */
648 break;
649 case 1:
650 case 2:
651 case 4:
652 case 8:
653 fix->visual = FB_VISUAL_PSEUDOCOLOR;
654 break;
655 }
656 }
657
658 fix->accel = FB_ACCEL_NONE;
659
660 fix->xpanstep = 1;
661 fix->ypanstep = 1;
662 }
663
664 /* check new var and possibly modify it to be ok */
665 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
666 {
667 struct omapfb_info *ofbi = FB2OFB(fbi);
668 struct omap_dss_device *display = fb2display(fbi);
669 enum omap_color_mode mode = 0;
670 int i;
671 int r;
672
673 DBG("check_fb_var %d\n", ofbi->id);
674
675 WARN_ON(!atomic_read(&ofbi->region->lock_count));
676
677 r = fb_mode_to_dss_mode(var, &mode);
678 if (r) {
679 DBG("cannot convert var to omap dss mode\n");
680 return r;
681 }
682
683 for (i = 0; i < ofbi->num_overlays; ++i) {
684 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
685 DBG("invalid mode\n");
686 return -EINVAL;
687 }
688 }
689
690 if (var->rotate > 3)
691 return -EINVAL;
692
693 if (check_fb_res_bounds(var))
694 return -EINVAL;
695
696 /* When no memory is allocated ignore the size check */
697 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
698 return -EINVAL;
699
700 if (var->xres + var->xoffset > var->xres_virtual)
701 var->xoffset = var->xres_virtual - var->xres;
702 if (var->yres + var->yoffset > var->yres_virtual)
703 var->yoffset = var->yres_virtual - var->yres;
704
705 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
706 var->xres, var->yres,
707 var->xres_virtual, var->yres_virtual);
708
709 if (display && display->driver->get_dimensions) {
710 u32 w, h;
711 display->driver->get_dimensions(display, &w, &h);
712 var->width = DIV_ROUND_CLOSEST(w, 1000);
713 var->height = DIV_ROUND_CLOSEST(h, 1000);
714 } else {
715 var->height = -1;
716 var->width = -1;
717 }
718
719 var->grayscale = 0;
720
721 if (display && display->driver->get_timings) {
722 struct omap_video_timings timings;
723 display->driver->get_timings(display, &timings);
724
725 /* pixclock in ps, the rest in pixclock */
726 var->pixclock = timings.pixel_clock != 0 ?
727 KHZ2PICOS(timings.pixel_clock) :
728 0;
729 var->left_margin = timings.hbp;
730 var->right_margin = timings.hfp;
731 var->upper_margin = timings.vbp;
732 var->lower_margin = timings.vfp;
733 var->hsync_len = timings.hsw;
734 var->vsync_len = timings.vsw;
735 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
736 FB_SYNC_HOR_HIGH_ACT : 0;
737 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
738 FB_SYNC_VERT_HIGH_ACT : 0;
739 var->vmode = timings.interlace ?
740 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
741 } else {
742 var->pixclock = 0;
743 var->left_margin = 0;
744 var->right_margin = 0;
745 var->upper_margin = 0;
746 var->lower_margin = 0;
747 var->hsync_len = 0;
748 var->vsync_len = 0;
749 var->sync = 0;
750 var->vmode = FB_VMODE_NONINTERLACED;
751 }
752
753 return 0;
754 }
755
756 /*
757 * ---------------------------------------------------------------------------
758 * fbdev framework callbacks
759 * ---------------------------------------------------------------------------
760 */
761 static int omapfb_open(struct fb_info *fbi, int user)
762 {
763 return 0;
764 }
765
766 static int omapfb_release(struct fb_info *fbi, int user)
767 {
768 return 0;
769 }
770
771 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
772 const struct fb_fix_screeninfo *fix, int rotation)
773 {
774 unsigned offset;
775
776 offset = var->yoffset * fix->line_length +
777 var->xoffset * (var->bits_per_pixel >> 3);
778
779 return offset;
780 }
781
782 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
783 const struct fb_fix_screeninfo *fix, int rotation)
784 {
785 unsigned offset;
786
787 if (rotation == FB_ROTATE_UD)
788 offset = (var->yres_virtual - var->yres) *
789 fix->line_length;
790 else if (rotation == FB_ROTATE_CW)
791 offset = (var->yres_virtual - var->yres) *
792 (var->bits_per_pixel >> 3);
793 else
794 offset = 0;
795
796 if (rotation == FB_ROTATE_UR)
797 offset += var->yoffset * fix->line_length +
798 var->xoffset * (var->bits_per_pixel >> 3);
799 else if (rotation == FB_ROTATE_UD)
800 offset -= var->yoffset * fix->line_length +
801 var->xoffset * (var->bits_per_pixel >> 3);
802 else if (rotation == FB_ROTATE_CW)
803 offset -= var->xoffset * fix->line_length +
804 var->yoffset * (var->bits_per_pixel >> 3);
805 else if (rotation == FB_ROTATE_CCW)
806 offset += var->xoffset * fix->line_length +
807 var->yoffset * (var->bits_per_pixel >> 3);
808
809 return offset;
810 }
811
812 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
813 const struct fb_var_screeninfo *var,
814 const struct fb_fix_screeninfo *fix,
815 int rotation, u32 *paddr)
816 {
817 u32 data_start_p;
818 int offset;
819
820 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
821 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
822 else
823 data_start_p = omapfb_get_region_paddr(ofbi);
824
825 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
826 offset = calc_rotation_offset_vrfb(var, fix, rotation);
827 else
828 offset = calc_rotation_offset_dma(var, fix, rotation);
829
830 data_start_p += offset;
831
832 if (offset)
833 DBG("offset %d, %d = %d\n",
834 var->xoffset, var->yoffset, offset);
835
836 DBG("paddr %x\n", data_start_p);
837
838 *paddr = data_start_p;
839 }
840
841 /* setup overlay according to the fb */
842 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
843 u16 posx, u16 posy, u16 outw, u16 outh)
844 {
845 int r = 0;
846 struct omapfb_info *ofbi = FB2OFB(fbi);
847 struct fb_var_screeninfo *var = &fbi->var;
848 struct fb_fix_screeninfo *fix = &fbi->fix;
849 enum omap_color_mode mode = 0;
850 u32 data_start_p = 0;
851 struct omap_overlay_info info;
852 int xres, yres;
853 int screen_width;
854 int mirror;
855 int rotation = var->rotate;
856 int i;
857
858 WARN_ON(!atomic_read(&ofbi->region->lock_count));
859
860 for (i = 0; i < ofbi->num_overlays; i++) {
861 if (ovl != ofbi->overlays[i])
862 continue;
863
864 rotation = (rotation + ofbi->rotation[i]) % 4;
865 break;
866 }
867
868 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
869 posx, posy, outw, outh);
870
871 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
872 xres = var->yres;
873 yres = var->xres;
874 } else {
875 xres = var->xres;
876 yres = var->yres;
877 }
878
879 if (ofbi->region->size)
880 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
881
882 r = fb_mode_to_dss_mode(var, &mode);
883 if (r) {
884 DBG("fb_mode_to_dss_mode failed");
885 goto err;
886 }
887
888 switch (var->nonstd) {
889 case OMAPFB_COLOR_YUV422:
890 case OMAPFB_COLOR_YUY422:
891 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
892 screen_width = fix->line_length
893 / (var->bits_per_pixel >> 2);
894 break;
895 }
896 default:
897 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
898 break;
899 }
900
901 ovl->get_overlay_info(ovl, &info);
902
903 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
904 mirror = 0;
905 else
906 mirror = ofbi->mirror;
907
908 info.paddr = data_start_p;
909 info.screen_width = screen_width;
910 info.width = xres;
911 info.height = yres;
912 info.color_mode = mode;
913 info.rotation_type = ofbi->rotation_type;
914 info.rotation = rotation;
915 info.mirror = mirror;
916
917 info.pos_x = posx;
918 info.pos_y = posy;
919 info.out_width = outw;
920 info.out_height = outh;
921
922 r = ovl->set_overlay_info(ovl, &info);
923 if (r) {
924 DBG("ovl->setup_overlay_info failed\n");
925 goto err;
926 }
927
928 return 0;
929
930 err:
931 DBG("setup_overlay failed\n");
932 return r;
933 }
934
935 /* apply var to the overlay */
936 int omapfb_apply_changes(struct fb_info *fbi, int init)
937 {
938 int r = 0;
939 struct omapfb_info *ofbi = FB2OFB(fbi);
940 struct fb_var_screeninfo *var = &fbi->var;
941 struct omap_overlay *ovl;
942 u16 posx, posy;
943 u16 outw, outh;
944 int i;
945
946 #ifdef DEBUG
947 if (omapfb_test_pattern)
948 fill_fb(fbi);
949 #endif
950
951 WARN_ON(!atomic_read(&ofbi->region->lock_count));
952
953 for (i = 0; i < ofbi->num_overlays; i++) {
954 ovl = ofbi->overlays[i];
955
956 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
957
958 if (ofbi->region->size == 0) {
959 /* the fb is not available. disable the overlay */
960 omapfb_overlay_enable(ovl, 0);
961 if (!init && ovl->manager)
962 ovl->manager->apply(ovl->manager);
963 continue;
964 }
965
966 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
967 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
968 if (rotation == FB_ROTATE_CW ||
969 rotation == FB_ROTATE_CCW) {
970 outw = var->yres;
971 outh = var->xres;
972 } else {
973 outw = var->xres;
974 outh = var->yres;
975 }
976 } else {
977 struct omap_overlay_info info;
978 ovl->get_overlay_info(ovl, &info);
979 outw = info.out_width;
980 outh = info.out_height;
981 }
982
983 if (init) {
984 posx = 0;
985 posy = 0;
986 } else {
987 struct omap_overlay_info info;
988 ovl->get_overlay_info(ovl, &info);
989 posx = info.pos_x;
990 posy = info.pos_y;
991 }
992
993 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
994 if (r)
995 goto err;
996
997 if (!init && ovl->manager)
998 ovl->manager->apply(ovl->manager);
999 }
1000 return 0;
1001 err:
1002 DBG("apply_changes failed\n");
1003 return r;
1004 }
1005
1006 /* checks var and eventually tweaks it to something supported,
1007 * DO NOT MODIFY PAR */
1008 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1009 {
1010 struct omapfb_info *ofbi = FB2OFB(fbi);
1011 int r;
1012
1013 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1014
1015 omapfb_get_mem_region(ofbi->region);
1016
1017 r = check_fb_var(fbi, var);
1018
1019 omapfb_put_mem_region(ofbi->region);
1020
1021 return r;
1022 }
1023
1024 /* set the video mode according to info->var */
1025 static int omapfb_set_par(struct fb_info *fbi)
1026 {
1027 struct omapfb_info *ofbi = FB2OFB(fbi);
1028 int r;
1029
1030 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1031
1032 omapfb_get_mem_region(ofbi->region);
1033
1034 set_fb_fix(fbi);
1035
1036 r = setup_vrfb_rotation(fbi);
1037 if (r)
1038 goto out;
1039
1040 r = omapfb_apply_changes(fbi, 0);
1041
1042 out:
1043 omapfb_put_mem_region(ofbi->region);
1044
1045 return r;
1046 }
1047
1048 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1049 struct fb_info *fbi)
1050 {
1051 struct omapfb_info *ofbi = FB2OFB(fbi);
1052 struct fb_var_screeninfo new_var;
1053 int r;
1054
1055 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1056
1057 if (var->xoffset == fbi->var.xoffset &&
1058 var->yoffset == fbi->var.yoffset)
1059 return 0;
1060
1061 new_var = fbi->var;
1062 new_var.xoffset = var->xoffset;
1063 new_var.yoffset = var->yoffset;
1064
1065 fbi->var = new_var;
1066
1067 omapfb_get_mem_region(ofbi->region);
1068
1069 r = omapfb_apply_changes(fbi, 0);
1070
1071 omapfb_put_mem_region(ofbi->region);
1072
1073 return r;
1074 }
1075
1076 static void mmap_user_open(struct vm_area_struct *vma)
1077 {
1078 struct omapfb2_mem_region *rg = vma->vm_private_data;
1079
1080 omapfb_get_mem_region(rg);
1081 atomic_inc(&rg->map_count);
1082 omapfb_put_mem_region(rg);
1083 }
1084
1085 static void mmap_user_close(struct vm_area_struct *vma)
1086 {
1087 struct omapfb2_mem_region *rg = vma->vm_private_data;
1088
1089 omapfb_get_mem_region(rg);
1090 atomic_dec(&rg->map_count);
1091 omapfb_put_mem_region(rg);
1092 }
1093
1094 static struct vm_operations_struct mmap_user_ops = {
1095 .open = mmap_user_open,
1096 .close = mmap_user_close,
1097 };
1098
1099 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1100 {
1101 struct omapfb_info *ofbi = FB2OFB(fbi);
1102 struct fb_fix_screeninfo *fix = &fbi->fix;
1103 struct omapfb2_mem_region *rg;
1104 unsigned long start;
1105 u32 len;
1106 int r;
1107
1108 rg = omapfb_get_mem_region(ofbi->region);
1109
1110 start = omapfb_get_region_paddr(ofbi);
1111 len = fix->smem_len;
1112
1113 DBG("user mmap region start %lx, len %d, off %lx\n", start, len,
1114 vma->vm_pgoff << PAGE_SHIFT);
1115
1116 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1117 vma->vm_ops = &mmap_user_ops;
1118 vma->vm_private_data = rg;
1119
1120 r = vm_iomap_memory(vma, start, len);
1121 if (r)
1122 goto error;
1123
1124 /* vm_ops.open won't be called for mmap itself. */
1125 atomic_inc(&rg->map_count);
1126
1127 omapfb_put_mem_region(rg);
1128
1129 return 0;
1130
1131 error:
1132 omapfb_put_mem_region(ofbi->region);
1133
1134 return r;
1135 }
1136
1137 /* Store a single color palette entry into a pseudo palette or the hardware
1138 * palette if one is available. For now we support only 16bpp and thus store
1139 * the entry only to the pseudo palette.
1140 */
1141 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1142 u_int blue, u_int transp, int update_hw_pal)
1143 {
1144 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1145 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1146 struct fb_var_screeninfo *var = &fbi->var;
1147 int r = 0;
1148
1149 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1150
1151 /*switch (plane->color_mode) {*/
1152 switch (mode) {
1153 case OMAPFB_COLOR_YUV422:
1154 case OMAPFB_COLOR_YUV420:
1155 case OMAPFB_COLOR_YUY422:
1156 r = -EINVAL;
1157 break;
1158 case OMAPFB_COLOR_CLUT_8BPP:
1159 case OMAPFB_COLOR_CLUT_4BPP:
1160 case OMAPFB_COLOR_CLUT_2BPP:
1161 case OMAPFB_COLOR_CLUT_1BPP:
1162 /*
1163 if (fbdev->ctrl->setcolreg)
1164 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1165 transp, update_hw_pal);
1166 */
1167 /* Fallthrough */
1168 r = -EINVAL;
1169 break;
1170 case OMAPFB_COLOR_RGB565:
1171 case OMAPFB_COLOR_RGB444:
1172 case OMAPFB_COLOR_RGB24P:
1173 case OMAPFB_COLOR_RGB24U:
1174 if (r != 0)
1175 break;
1176
1177 if (regno < 16) {
1178 u32 pal;
1179 pal = ((red >> (16 - var->red.length)) <<
1180 var->red.offset) |
1181 ((green >> (16 - var->green.length)) <<
1182 var->green.offset) |
1183 (blue >> (16 - var->blue.length));
1184 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1185 }
1186 break;
1187 default:
1188 BUG();
1189 }
1190 return r;
1191 }
1192
1193 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1194 u_int transp, struct fb_info *info)
1195 {
1196 DBG("setcolreg\n");
1197
1198 return _setcolreg(info, regno, red, green, blue, transp, 1);
1199 }
1200
1201 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1202 {
1203 int count, index, r;
1204 u16 *red, *green, *blue, *transp;
1205 u16 trans = 0xffff;
1206
1207 DBG("setcmap\n");
1208
1209 red = cmap->red;
1210 green = cmap->green;
1211 blue = cmap->blue;
1212 transp = cmap->transp;
1213 index = cmap->start;
1214
1215 for (count = 0; count < cmap->len; count++) {
1216 if (transp)
1217 trans = *transp++;
1218 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1219 count == cmap->len - 1);
1220 if (r != 0)
1221 return r;
1222 }
1223
1224 return 0;
1225 }
1226
1227 static int omapfb_blank(int blank, struct fb_info *fbi)
1228 {
1229 struct omapfb_info *ofbi = FB2OFB(fbi);
1230 struct omapfb2_device *fbdev = ofbi->fbdev;
1231 struct omap_dss_device *display = fb2display(fbi);
1232 struct omapfb_display_data *d;
1233 int r = 0;
1234
1235 if (!display)
1236 return -EINVAL;
1237
1238 omapfb_lock(fbdev);
1239
1240 d = get_display_data(fbdev, display);
1241
1242 switch (blank) {
1243 case FB_BLANK_UNBLANK:
1244 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1245 goto exit;
1246
1247 r = display->driver->enable(display);
1248
1249 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1250 d->update_mode == OMAPFB_AUTO_UPDATE &&
1251 !d->auto_update_work_enabled)
1252 omapfb_start_auto_update(fbdev, display);
1253
1254 break;
1255
1256 case FB_BLANK_NORMAL:
1257 /* FB_BLANK_NORMAL could be implemented.
1258 * Needs DSS additions. */
1259 case FB_BLANK_VSYNC_SUSPEND:
1260 case FB_BLANK_HSYNC_SUSPEND:
1261 case FB_BLANK_POWERDOWN:
1262 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1263 goto exit;
1264
1265 if (d->auto_update_work_enabled)
1266 omapfb_stop_auto_update(fbdev, display);
1267
1268 display->driver->disable(display);
1269
1270 break;
1271
1272 default:
1273 r = -EINVAL;
1274 }
1275
1276 exit:
1277 omapfb_unlock(fbdev);
1278
1279 return r;
1280 }
1281
1282 #if 0
1283 /* XXX fb_read and fb_write are needed for VRFB */
1284 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1285 size_t count, loff_t *ppos)
1286 {
1287 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1288 /* XXX needed for VRFB */
1289 return count;
1290 }
1291 #endif
1292
1293 static struct fb_ops omapfb_ops = {
1294 .owner = THIS_MODULE,
1295 .fb_open = omapfb_open,
1296 .fb_release = omapfb_release,
1297 .fb_fillrect = cfb_fillrect,
1298 .fb_copyarea = cfb_copyarea,
1299 .fb_imageblit = cfb_imageblit,
1300 .fb_blank = omapfb_blank,
1301 .fb_ioctl = omapfb_ioctl,
1302 .fb_check_var = omapfb_check_var,
1303 .fb_set_par = omapfb_set_par,
1304 .fb_pan_display = omapfb_pan_display,
1305 .fb_mmap = omapfb_mmap,
1306 .fb_setcolreg = omapfb_setcolreg,
1307 .fb_setcmap = omapfb_setcmap,
1308 /*.fb_write = omapfb_write,*/
1309 };
1310
1311 static void omapfb_free_fbmem(struct fb_info *fbi)
1312 {
1313 struct omapfb_info *ofbi = FB2OFB(fbi);
1314 struct omapfb2_device *fbdev = ofbi->fbdev;
1315 struct omapfb2_mem_region *rg;
1316
1317 rg = ofbi->region;
1318
1319 if (rg->token == NULL)
1320 return;
1321
1322 WARN_ON(atomic_read(&rg->map_count));
1323
1324 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1325 /* unmap the 0 angle rotation */
1326 if (rg->vrfb.vaddr[0]) {
1327 iounmap(rg->vrfb.vaddr[0]);
1328 rg->vrfb.vaddr[0] = NULL;
1329 }
1330
1331 omap_vrfb_release_ctx(&rg->vrfb);
1332 }
1333
1334 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1335 &rg->attrs);
1336
1337 rg->token = NULL;
1338 rg->vaddr = NULL;
1339 rg->paddr = 0;
1340 rg->alloc = 0;
1341 rg->size = 0;
1342 }
1343
1344 static void clear_fb_info(struct fb_info *fbi)
1345 {
1346 memset(&fbi->var, 0, sizeof(fbi->var));
1347 memset(&fbi->fix, 0, sizeof(fbi->fix));
1348 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1349 }
1350
1351 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1352 {
1353 int i;
1354
1355 DBG("free all fbmem\n");
1356
1357 for (i = 0; i < fbdev->num_fbs; i++) {
1358 struct fb_info *fbi = fbdev->fbs[i];
1359 omapfb_free_fbmem(fbi);
1360 clear_fb_info(fbi);
1361 }
1362
1363 return 0;
1364 }
1365
1366 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1367 unsigned long paddr)
1368 {
1369 struct omapfb_info *ofbi = FB2OFB(fbi);
1370 struct omapfb2_device *fbdev = ofbi->fbdev;
1371 struct omapfb2_mem_region *rg;
1372 void *token;
1373 DEFINE_DMA_ATTRS(attrs);
1374 dma_addr_t dma_handle;
1375 int r;
1376
1377 rg = ofbi->region;
1378
1379 rg->paddr = 0;
1380 rg->vaddr = NULL;
1381 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1382 rg->size = 0;
1383 rg->type = 0;
1384 rg->alloc = false;
1385 rg->map = false;
1386
1387 size = PAGE_ALIGN(size);
1388
1389 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
1390
1391 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1392 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
1393
1394 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1395
1396 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1397 GFP_KERNEL, &attrs);
1398
1399 if (token == NULL) {
1400 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1401 return -ENOMEM;
1402 }
1403
1404 DBG("allocated VRAM paddr %lx, vaddr %p\n",
1405 (unsigned long)dma_handle, token);
1406
1407 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1408 r = omap_vrfb_request_ctx(&rg->vrfb);
1409 if (r) {
1410 dma_free_attrs(fbdev->dev, size, token, dma_handle,
1411 &attrs);
1412 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1413 return r;
1414 }
1415 }
1416
1417 rg->attrs = attrs;
1418 rg->token = token;
1419 rg->dma_handle = dma_handle;
1420
1421 rg->paddr = (unsigned long)dma_handle;
1422 rg->vaddr = (void __iomem *)token;
1423 rg->size = size;
1424 rg->alloc = 1;
1425
1426 return 0;
1427 }
1428
1429 /* allocate fbmem using display resolution as reference */
1430 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1431 unsigned long paddr)
1432 {
1433 struct omapfb_info *ofbi = FB2OFB(fbi);
1434 struct omapfb2_device *fbdev = ofbi->fbdev;
1435 struct omap_dss_device *display;
1436 int bytespp;
1437
1438 display = fb2display(fbi);
1439
1440 if (!display)
1441 return 0;
1442
1443 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1444 case 16:
1445 bytespp = 2;
1446 break;
1447 case 24:
1448 bytespp = 4;
1449 break;
1450 default:
1451 bytespp = 4;
1452 break;
1453 }
1454
1455 if (!size) {
1456 u16 w, h;
1457
1458 display->driver->get_resolution(display, &w, &h);
1459
1460 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1461 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1462 omap_vrfb_min_phys_size(h, w, bytespp));
1463
1464 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1465 w * h * bytespp, size);
1466 } else {
1467 size = w * h * bytespp;
1468 }
1469 }
1470
1471 if (!size)
1472 return 0;
1473
1474 return omapfb_alloc_fbmem(fbi, size, paddr);
1475 }
1476
1477 static int omapfb_parse_vram_param(const char *param, int max_entries,
1478 unsigned long *sizes, unsigned long *paddrs)
1479 {
1480 int fbnum;
1481 unsigned long size;
1482 unsigned long paddr = 0;
1483 char *p, *start;
1484
1485 start = (char *)param;
1486
1487 while (1) {
1488 p = start;
1489
1490 fbnum = simple_strtoul(p, &p, 10);
1491
1492 if (p == start)
1493 return -EINVAL;
1494
1495 if (*p != ':')
1496 return -EINVAL;
1497
1498 if (fbnum >= max_entries)
1499 return -EINVAL;
1500
1501 size = memparse(p + 1, &p);
1502
1503 if (!size)
1504 return -EINVAL;
1505
1506 paddr = 0;
1507
1508 if (*p == '@') {
1509 paddr = simple_strtoul(p + 1, &p, 16);
1510
1511 if (!paddr)
1512 return -EINVAL;
1513
1514 }
1515
1516 WARN_ONCE(paddr,
1517 "reserving memory at predefined address not supported\n");
1518
1519 paddrs[fbnum] = paddr;
1520 sizes[fbnum] = size;
1521
1522 if (*p == 0)
1523 break;
1524
1525 if (*p != ',')
1526 return -EINVAL;
1527
1528 ++p;
1529
1530 start = p;
1531 }
1532
1533 return 0;
1534 }
1535
1536 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1537 {
1538 int i, r;
1539 unsigned long vram_sizes[10];
1540 unsigned long vram_paddrs[10];
1541
1542 memset(&vram_sizes, 0, sizeof(vram_sizes));
1543 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1544
1545 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1546 vram_sizes, vram_paddrs)) {
1547 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1548
1549 memset(&vram_sizes, 0, sizeof(vram_sizes));
1550 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1551 }
1552
1553 for (i = 0; i < fbdev->num_fbs; i++) {
1554 /* allocate memory automatically only for fb0, or if
1555 * excplicitly defined with vram or plat data option */
1556 if (i == 0 || vram_sizes[i] != 0) {
1557 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1558 vram_sizes[i], vram_paddrs[i]);
1559
1560 if (r)
1561 return r;
1562 }
1563 }
1564
1565 for (i = 0; i < fbdev->num_fbs; i++) {
1566 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1567 struct omapfb2_mem_region *rg;
1568 rg = ofbi->region;
1569
1570 DBG("region%d phys %08x virt %p size=%lu\n",
1571 i,
1572 rg->paddr,
1573 rg->vaddr,
1574 rg->size);
1575 }
1576
1577 return 0;
1578 }
1579
1580 static void omapfb_clear_fb(struct fb_info *fbi)
1581 {
1582 const struct fb_fillrect rect = {
1583 .dx = 0,
1584 .dy = 0,
1585 .width = fbi->var.xres_virtual,
1586 .height = fbi->var.yres_virtual,
1587 .color = 0,
1588 .rop = ROP_COPY,
1589 };
1590
1591 cfb_fillrect(fbi, &rect);
1592 }
1593
1594 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1595 {
1596 struct omapfb_info *ofbi = FB2OFB(fbi);
1597 struct omapfb2_device *fbdev = ofbi->fbdev;
1598 struct omapfb2_mem_region *rg = ofbi->region;
1599 unsigned long old_size = rg->size;
1600 unsigned long old_paddr = rg->paddr;
1601 int old_type = rg->type;
1602 int r;
1603
1604 if (type != OMAPFB_MEMTYPE_SDRAM)
1605 return -EINVAL;
1606
1607 size = PAGE_ALIGN(size);
1608
1609 if (old_size == size && old_type == type)
1610 return 0;
1611
1612 omapfb_free_fbmem(fbi);
1613
1614 if (size == 0) {
1615 clear_fb_info(fbi);
1616 return 0;
1617 }
1618
1619 r = omapfb_alloc_fbmem(fbi, size, 0);
1620
1621 if (r) {
1622 if (old_size)
1623 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1624
1625 if (rg->size == 0)
1626 clear_fb_info(fbi);
1627
1628 return r;
1629 }
1630
1631 if (old_size == size)
1632 return 0;
1633
1634 if (old_size == 0) {
1635 DBG("initializing fb %d\n", ofbi->id);
1636 r = omapfb_fb_init(fbdev, fbi);
1637 if (r) {
1638 DBG("omapfb_fb_init failed\n");
1639 goto err;
1640 }
1641 r = omapfb_apply_changes(fbi, 1);
1642 if (r) {
1643 DBG("omapfb_apply_changes failed\n");
1644 goto err;
1645 }
1646 } else {
1647 struct fb_var_screeninfo new_var;
1648 memcpy(&new_var, &fbi->var, sizeof(new_var));
1649 r = check_fb_var(fbi, &new_var);
1650 if (r)
1651 goto err;
1652 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1653 set_fb_fix(fbi);
1654 r = setup_vrfb_rotation(fbi);
1655 if (r)
1656 goto err;
1657 }
1658
1659 omapfb_clear_fb(fbi);
1660
1661 return 0;
1662 err:
1663 omapfb_free_fbmem(fbi);
1664 clear_fb_info(fbi);
1665 return r;
1666 }
1667
1668 static void omapfb_auto_update_work(struct work_struct *work)
1669 {
1670 struct omap_dss_device *dssdev;
1671 struct omap_dss_driver *dssdrv;
1672 struct omapfb_display_data *d;
1673 u16 w, h;
1674 unsigned int freq;
1675 struct omapfb2_device *fbdev;
1676
1677 d = container_of(work, struct omapfb_display_data,
1678 auto_update_work.work);
1679
1680 dssdev = d->dssdev;
1681 dssdrv = dssdev->driver;
1682 fbdev = d->fbdev;
1683
1684 if (!dssdrv || !dssdrv->update)
1685 return;
1686
1687 if (dssdrv->sync)
1688 dssdrv->sync(dssdev);
1689
1690 dssdrv->get_resolution(dssdev, &w, &h);
1691 dssdrv->update(dssdev, 0, 0, w, h);
1692
1693 freq = auto_update_freq;
1694 if (freq == 0)
1695 freq = 20;
1696 queue_delayed_work(fbdev->auto_update_wq,
1697 &d->auto_update_work, HZ / freq);
1698 }
1699
1700 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1701 struct omap_dss_device *display)
1702 {
1703 struct omapfb_display_data *d;
1704
1705 if (fbdev->auto_update_wq == NULL) {
1706 struct workqueue_struct *wq;
1707
1708 wq = create_singlethread_workqueue("omapfb_auto_update");
1709
1710 if (wq == NULL) {
1711 dev_err(fbdev->dev, "Failed to create workqueue for "
1712 "auto-update\n");
1713 return;
1714 }
1715
1716 fbdev->auto_update_wq = wq;
1717 }
1718
1719 d = get_display_data(fbdev, display);
1720
1721 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1722
1723 d->auto_update_work_enabled = true;
1724
1725 omapfb_auto_update_work(&d->auto_update_work.work);
1726 }
1727
1728 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1729 struct omap_dss_device *display)
1730 {
1731 struct omapfb_display_data *d;
1732
1733 d = get_display_data(fbdev, display);
1734
1735 cancel_delayed_work_sync(&d->auto_update_work);
1736
1737 d->auto_update_work_enabled = false;
1738 }
1739
1740 /* initialize fb_info, var, fix to something sane based on the display */
1741 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1742 {
1743 struct fb_var_screeninfo *var = &fbi->var;
1744 struct omap_dss_device *display = fb2display(fbi);
1745 struct omapfb_info *ofbi = FB2OFB(fbi);
1746 int r = 0;
1747
1748 fbi->fbops = &omapfb_ops;
1749 fbi->flags = FBINFO_FLAG_DEFAULT;
1750 fbi->pseudo_palette = fbdev->pseudo_palette;
1751
1752 if (ofbi->region->size == 0) {
1753 clear_fb_info(fbi);
1754 return 0;
1755 }
1756
1757 var->nonstd = 0;
1758 var->bits_per_pixel = 0;
1759
1760 var->rotate = def_rotate;
1761
1762 if (display) {
1763 u16 w, h;
1764 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1765
1766 display->driver->get_resolution(display, &w, &h);
1767
1768 if (rotation == FB_ROTATE_CW ||
1769 rotation == FB_ROTATE_CCW) {
1770 var->xres = h;
1771 var->yres = w;
1772 } else {
1773 var->xres = w;
1774 var->yres = h;
1775 }
1776
1777 var->xres_virtual = var->xres;
1778 var->yres_virtual = var->yres;
1779
1780 if (!var->bits_per_pixel) {
1781 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1782 case 16:
1783 var->bits_per_pixel = 16;
1784 break;
1785 case 24:
1786 var->bits_per_pixel = 32;
1787 break;
1788 default:
1789 dev_err(fbdev->dev, "illegal display "
1790 "bpp\n");
1791 return -EINVAL;
1792 }
1793 }
1794 } else {
1795 /* if there's no display, let's just guess some basic values */
1796 var->xres = 320;
1797 var->yres = 240;
1798 var->xres_virtual = var->xres;
1799 var->yres_virtual = var->yres;
1800 if (!var->bits_per_pixel)
1801 var->bits_per_pixel = 16;
1802 }
1803
1804 r = check_fb_var(fbi, var);
1805 if (r)
1806 goto err;
1807
1808 set_fb_fix(fbi);
1809 r = setup_vrfb_rotation(fbi);
1810 if (r)
1811 goto err;
1812
1813 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1814 if (r)
1815 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1816
1817 err:
1818 return r;
1819 }
1820
1821 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1822 {
1823 fb_dealloc_cmap(&fbi->cmap);
1824 }
1825
1826
1827 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1828 {
1829 int i;
1830
1831 DBG("free_resources\n");
1832
1833 if (fbdev == NULL)
1834 return;
1835
1836 for (i = 0; i < fbdev->num_fbs; i++)
1837 unregister_framebuffer(fbdev->fbs[i]);
1838
1839 /* free the reserved fbmem */
1840 omapfb_free_all_fbmem(fbdev);
1841
1842 for (i = 0; i < fbdev->num_fbs; i++) {
1843 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1844 framebuffer_release(fbdev->fbs[i]);
1845 }
1846
1847 for (i = 0; i < fbdev->num_displays; i++) {
1848 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1849
1850 if (fbdev->displays[i].auto_update_work_enabled)
1851 omapfb_stop_auto_update(fbdev, dssdev);
1852
1853 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1854 dssdev->driver->disable(dssdev);
1855
1856 omap_dss_put_device(dssdev);
1857 }
1858
1859 if (fbdev->auto_update_wq != NULL) {
1860 flush_workqueue(fbdev->auto_update_wq);
1861 destroy_workqueue(fbdev->auto_update_wq);
1862 fbdev->auto_update_wq = NULL;
1863 }
1864
1865 dev_set_drvdata(fbdev->dev, NULL);
1866 }
1867
1868 static 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 for (i = 0; i < fbdev->num_fbs; i++) {
1945 struct fb_info *fbi = fbdev->fbs[i];
1946 struct omapfb_info *ofbi = FB2OFB(fbi);
1947
1948 if (ofbi->region->size == 0)
1949 continue;
1950
1951 omapfb_clear_fb(fbi);
1952 }
1953
1954 DBG("fb_infos initialized\n");
1955
1956 for (i = 0; i < fbdev->num_fbs; i++) {
1957 r = register_framebuffer(fbdev->fbs[i]);
1958 if (r != 0) {
1959 dev_err(fbdev->dev,
1960 "registering framebuffer %d failed\n", i);
1961 return r;
1962 }
1963 }
1964
1965 DBG("framebuffers registered\n");
1966
1967 for (i = 0; i < fbdev->num_fbs; i++) {
1968 struct fb_info *fbi = fbdev->fbs[i];
1969 struct omapfb_info *ofbi = FB2OFB(fbi);
1970
1971 omapfb_get_mem_region(ofbi->region);
1972 r = omapfb_apply_changes(fbi, 1);
1973 omapfb_put_mem_region(ofbi->region);
1974
1975 if (r) {
1976 dev_err(fbdev->dev, "failed to change mode\n");
1977 return r;
1978 }
1979 }
1980
1981 /* Enable fb0 */
1982 if (fbdev->num_fbs > 0) {
1983 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1984
1985 if (ofbi->num_overlays > 0) {
1986 struct omap_overlay *ovl = ofbi->overlays[0];
1987
1988 ovl->manager->apply(ovl->manager);
1989
1990 r = omapfb_overlay_enable(ovl, 1);
1991
1992 if (r) {
1993 dev_err(fbdev->dev,
1994 "failed to enable overlay\n");
1995 return r;
1996 }
1997 }
1998 }
1999
2000 DBG("create_framebuffers done\n");
2001
2002 return 0;
2003 }
2004
2005 static int omapfb_mode_to_timings(const char *mode_str,
2006 struct omap_dss_device *display,
2007 struct omap_video_timings *timings, u8 *bpp)
2008 {
2009 struct fb_info *fbi;
2010 struct fb_var_screeninfo *var;
2011 struct fb_ops *fbops;
2012 int r;
2013
2014 #ifdef CONFIG_OMAP2_DSS_VENC
2015 if (strcmp(mode_str, "pal") == 0) {
2016 *timings = omap_dss_pal_timings;
2017 *bpp = 24;
2018 return 0;
2019 } else if (strcmp(mode_str, "ntsc") == 0) {
2020 *timings = omap_dss_ntsc_timings;
2021 *bpp = 24;
2022 return 0;
2023 }
2024 #endif
2025
2026 /* this is quite a hack, but I wanted to use the modedb and for
2027 * that we need fb_info and var, so we create dummy ones */
2028
2029 *bpp = 0;
2030 fbi = NULL;
2031 var = NULL;
2032 fbops = NULL;
2033
2034 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2035 if (fbi == NULL) {
2036 r = -ENOMEM;
2037 goto err;
2038 }
2039
2040 var = kzalloc(sizeof(*var), GFP_KERNEL);
2041 if (var == NULL) {
2042 r = -ENOMEM;
2043 goto err;
2044 }
2045
2046 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2047 if (fbops == NULL) {
2048 r = -ENOMEM;
2049 goto err;
2050 }
2051
2052 fbi->fbops = fbops;
2053
2054 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2055 if (r == 0) {
2056 r = -EINVAL;
2057 goto err;
2058 }
2059
2060 if (display->driver->get_timings) {
2061 display->driver->get_timings(display, timings);
2062 } else {
2063 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2064 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2065 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2066 }
2067
2068 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2069 timings->hbp = var->left_margin;
2070 timings->hfp = var->right_margin;
2071 timings->vbp = var->upper_margin;
2072 timings->vfp = var->lower_margin;
2073 timings->hsw = var->hsync_len;
2074 timings->vsw = var->vsync_len;
2075 timings->x_res = var->xres;
2076 timings->y_res = var->yres;
2077 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2078 OMAPDSS_SIG_ACTIVE_HIGH :
2079 OMAPDSS_SIG_ACTIVE_LOW;
2080 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2081 OMAPDSS_SIG_ACTIVE_HIGH :
2082 OMAPDSS_SIG_ACTIVE_LOW;
2083 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2084
2085 switch (var->bits_per_pixel) {
2086 case 16:
2087 *bpp = 16;
2088 break;
2089 case 24:
2090 case 32:
2091 default:
2092 *bpp = 24;
2093 break;
2094 }
2095
2096 r = 0;
2097
2098 err:
2099 kfree(fbi);
2100 kfree(var);
2101 kfree(fbops);
2102
2103 return r;
2104 }
2105
2106 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2107 struct omap_dss_device *display, char *mode_str)
2108 {
2109 int r;
2110 u8 bpp;
2111 struct omap_video_timings timings, temp_timings;
2112 struct omapfb_display_data *d;
2113
2114 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2115 if (r)
2116 return r;
2117
2118 d = get_display_data(fbdev, display);
2119 d->bpp_override = bpp;
2120
2121 if (display->driver->check_timings) {
2122 r = display->driver->check_timings(display, &timings);
2123 if (r)
2124 return r;
2125 } else {
2126 /* If check_timings is not present compare xres and yres */
2127 if (display->driver->get_timings) {
2128 display->driver->get_timings(display, &temp_timings);
2129
2130 if (temp_timings.x_res != timings.x_res ||
2131 temp_timings.y_res != timings.y_res)
2132 return -EINVAL;
2133 }
2134 }
2135
2136 if (display->driver->set_timings)
2137 display->driver->set_timings(display, &timings);
2138
2139 return 0;
2140 }
2141
2142 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2143 struct omap_dss_device *dssdev)
2144 {
2145 struct omapfb_display_data *d;
2146
2147 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2148
2149 d = get_display_data(fbdev, dssdev);
2150
2151 if (d->bpp_override != 0)
2152 return d->bpp_override;
2153
2154 return dssdev->driver->get_recommended_bpp(dssdev);
2155 }
2156
2157 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2158 {
2159 char *str, *options, *this_opt;
2160 int r = 0;
2161
2162 str = kstrdup(def_mode, GFP_KERNEL);
2163 if (!str)
2164 return -ENOMEM;
2165 options = str;
2166
2167 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2168 char *p, *display_str, *mode_str;
2169 struct omap_dss_device *display;
2170 int i;
2171
2172 p = strchr(this_opt, ':');
2173 if (!p) {
2174 r = -EINVAL;
2175 break;
2176 }
2177
2178 *p = 0;
2179 display_str = this_opt;
2180 mode_str = p + 1;
2181
2182 display = NULL;
2183 for (i = 0; i < fbdev->num_displays; ++i) {
2184 if (strcmp(fbdev->displays[i].dssdev->name,
2185 display_str) == 0) {
2186 display = fbdev->displays[i].dssdev;
2187 break;
2188 }
2189 }
2190
2191 if (!display) {
2192 r = -EINVAL;
2193 break;
2194 }
2195
2196 r = omapfb_set_def_mode(fbdev, display, mode_str);
2197 if (r)
2198 break;
2199 }
2200
2201 kfree(str);
2202
2203 return r;
2204 }
2205
2206 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2207 struct omap_dss_device *display,
2208 struct omap_video_timings *t)
2209 {
2210 if (display->driver->get_timings) {
2211 display->driver->get_timings(display, t);
2212 } else {
2213 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2214 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2215 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2216 }
2217
2218 t->x_res = m->xres;
2219 t->y_res = m->yres;
2220 t->pixel_clock = PICOS2KHZ(m->pixclock);
2221 t->hsw = m->hsync_len;
2222 t->hfp = m->right_margin;
2223 t->hbp = m->left_margin;
2224 t->vsw = m->vsync_len;
2225 t->vfp = m->lower_margin;
2226 t->vbp = m->upper_margin;
2227 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2228 OMAPDSS_SIG_ACTIVE_HIGH :
2229 OMAPDSS_SIG_ACTIVE_LOW;
2230 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2231 OMAPDSS_SIG_ACTIVE_HIGH :
2232 OMAPDSS_SIG_ACTIVE_LOW;
2233 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2234 }
2235
2236 static int omapfb_find_best_mode(struct omap_dss_device *display,
2237 struct omap_video_timings *timings)
2238 {
2239 struct fb_monspecs *specs;
2240 u8 *edid;
2241 int r, i, best_idx, len;
2242
2243 if (!display->driver->read_edid)
2244 return -ENODEV;
2245
2246 len = 0x80 * 2;
2247 edid = kmalloc(len, GFP_KERNEL);
2248 if (edid == NULL)
2249 return -ENOMEM;
2250
2251 r = display->driver->read_edid(display, edid, len);
2252 if (r < 0)
2253 goto err1;
2254
2255 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2256 if (specs == NULL) {
2257 r = -ENOMEM;
2258 goto err1;
2259 }
2260
2261 fb_edid_to_monspecs(edid, specs);
2262
2263 best_idx = -1;
2264
2265 for (i = 0; i < specs->modedb_len; ++i) {
2266 struct fb_videomode *m;
2267 struct omap_video_timings t;
2268
2269 m = &specs->modedb[i];
2270
2271 if (m->pixclock == 0)
2272 continue;
2273
2274 /* skip repeated pixel modes */
2275 if (m->xres == 2880 || m->xres == 1440)
2276 continue;
2277
2278 if (m->vmode & FB_VMODE_INTERLACED ||
2279 m->vmode & FB_VMODE_DOUBLE)
2280 continue;
2281
2282 fb_videomode_to_omap_timings(m, display, &t);
2283
2284 r = display->driver->check_timings(display, &t);
2285 if (r == 0) {
2286 best_idx = i;
2287 break;
2288 }
2289 }
2290
2291 if (best_idx == -1) {
2292 r = -ENOENT;
2293 goto err2;
2294 }
2295
2296 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2297 timings);
2298
2299 r = 0;
2300
2301 err2:
2302 fb_destroy_modedb(specs->modedb);
2303 kfree(specs);
2304 err1:
2305 kfree(edid);
2306
2307 return r;
2308 }
2309
2310 static int omapfb_init_display(struct omapfb2_device *fbdev,
2311 struct omap_dss_device *dssdev)
2312 {
2313 struct omap_dss_driver *dssdrv = dssdev->driver;
2314 struct omapfb_display_data *d;
2315 int r;
2316
2317 r = dssdrv->enable(dssdev);
2318 if (r) {
2319 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2320 dssdev->name);
2321 return r;
2322 }
2323
2324 d = get_display_data(fbdev, dssdev);
2325
2326 d->fbdev = fbdev;
2327
2328 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2329 u16 w, h;
2330
2331 if (auto_update) {
2332 omapfb_start_auto_update(fbdev, dssdev);
2333 d->update_mode = OMAPFB_AUTO_UPDATE;
2334 } else {
2335 d->update_mode = OMAPFB_MANUAL_UPDATE;
2336 }
2337
2338 if (dssdrv->enable_te) {
2339 r = dssdrv->enable_te(dssdev, 1);
2340 if (r) {
2341 dev_err(fbdev->dev, "Failed to set TE\n");
2342 return r;
2343 }
2344 }
2345
2346 dssdrv->get_resolution(dssdev, &w, &h);
2347 r = dssdrv->update(dssdev, 0, 0, w, h);
2348 if (r) {
2349 dev_err(fbdev->dev,
2350 "Failed to update display\n");
2351 return r;
2352 }
2353 } else {
2354 d->update_mode = OMAPFB_AUTO_UPDATE;
2355 }
2356
2357 return 0;
2358 }
2359
2360 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2361 struct omap_dss_device *def_dssdev)
2362 {
2363 int i, r;
2364 struct omap_overlay_manager *mgr;
2365
2366 if (!def_dssdev->output) {
2367 dev_err(fbdev->dev, "no output for the default display\n");
2368 return -EINVAL;
2369 }
2370
2371 for (i = 0; i < fbdev->num_displays; ++i) {
2372 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2373 struct omap_dss_output *out = dssdev->output;
2374
2375 mgr = omap_dss_get_overlay_manager(out->dispc_channel);
2376
2377 if (!mgr || !out)
2378 continue;
2379
2380 if (mgr->output)
2381 mgr->unset_output(mgr);
2382
2383 mgr->set_output(mgr, out);
2384 }
2385
2386 mgr = def_dssdev->output->manager;
2387
2388 if (!mgr) {
2389 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2390 return -EINVAL;
2391 }
2392
2393 for (i = 0; i < fbdev->num_overlays; i++) {
2394 struct omap_overlay *ovl = fbdev->overlays[i];
2395
2396 if (ovl->manager)
2397 ovl->unset_manager(ovl);
2398
2399 r = ovl->set_manager(ovl, mgr);
2400 if (r)
2401 dev_warn(fbdev->dev,
2402 "failed to connect overlay %s to manager %s\n",
2403 ovl->name, mgr->name);
2404 }
2405
2406 return 0;
2407 }
2408
2409 static int omapfb_probe(struct platform_device *pdev)
2410 {
2411 struct omapfb2_device *fbdev = NULL;
2412 int r = 0;
2413 int i;
2414 struct omap_dss_device *def_display;
2415 struct omap_dss_device *dssdev;
2416
2417 DBG("omapfb_probe\n");
2418
2419 if (omapdss_is_initialized() == false)
2420 return -EPROBE_DEFER;
2421
2422 if (pdev->num_resources != 0) {
2423 dev_err(&pdev->dev, "probed for an unknown device\n");
2424 r = -ENODEV;
2425 goto err0;
2426 }
2427
2428 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2429 GFP_KERNEL);
2430 if (fbdev == NULL) {
2431 r = -ENOMEM;
2432 goto err0;
2433 }
2434
2435 if (def_vrfb && !omap_vrfb_supported()) {
2436 def_vrfb = 0;
2437 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2438 "ignoring the module parameter vrfb=y\n");
2439 }
2440
2441 r = omapdss_compat_init();
2442 if (r)
2443 goto err0;
2444
2445 mutex_init(&fbdev->mtx);
2446
2447 fbdev->dev = &pdev->dev;
2448 platform_set_drvdata(pdev, fbdev);
2449
2450 fbdev->num_displays = 0;
2451 dssdev = NULL;
2452 for_each_dss_dev(dssdev) {
2453 struct omapfb_display_data *d;
2454
2455 omap_dss_get_device(dssdev);
2456
2457 if (!dssdev->driver) {
2458 dev_warn(&pdev->dev, "no driver for display: %s\n",
2459 dssdev->name);
2460 omap_dss_put_device(dssdev);
2461 continue;
2462 }
2463
2464 d = &fbdev->displays[fbdev->num_displays++];
2465 d->dssdev = dssdev;
2466 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2467 d->update_mode = OMAPFB_MANUAL_UPDATE;
2468 else
2469 d->update_mode = OMAPFB_AUTO_UPDATE;
2470 }
2471
2472 if (fbdev->num_displays == 0) {
2473 dev_err(&pdev->dev, "no displays\n");
2474 r = -EPROBE_DEFER;
2475 goto cleanup;
2476 }
2477
2478 fbdev->num_overlays = omap_dss_get_num_overlays();
2479 for (i = 0; i < fbdev->num_overlays; i++)
2480 fbdev->overlays[i] = omap_dss_get_overlay(i);
2481
2482 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2483 for (i = 0; i < fbdev->num_managers; i++)
2484 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2485
2486 def_display = NULL;
2487
2488 for (i = 0; i < fbdev->num_displays; ++i) {
2489 struct omap_dss_device *dssdev;
2490 const char *def_name;
2491
2492 def_name = omapdss_get_default_display_name();
2493
2494 dssdev = fbdev->displays[i].dssdev;
2495
2496 if (def_name == NULL ||
2497 (dssdev->name && strcmp(def_name, dssdev->name) == 0)) {
2498 def_display = dssdev;
2499 break;
2500 }
2501 }
2502
2503 if (def_display == NULL) {
2504 dev_err(fbdev->dev, "failed to find default display\n");
2505 r = -EINVAL;
2506 goto cleanup;
2507 }
2508
2509 r = omapfb_init_connections(fbdev, def_display);
2510 if (r) {
2511 dev_err(fbdev->dev, "failed to init overlay connections\n");
2512 goto cleanup;
2513 }
2514
2515 if (def_mode && strlen(def_mode) > 0) {
2516 if (omapfb_parse_def_modes(fbdev))
2517 dev_warn(&pdev->dev, "cannot parse default modes\n");
2518 } else if (def_display && def_display->driver->set_timings &&
2519 def_display->driver->check_timings) {
2520 struct omap_video_timings t;
2521
2522 r = omapfb_find_best_mode(def_display, &t);
2523
2524 if (r == 0)
2525 def_display->driver->set_timings(def_display, &t);
2526 }
2527
2528 r = omapfb_create_framebuffers(fbdev);
2529 if (r)
2530 goto cleanup;
2531
2532 for (i = 0; i < fbdev->num_managers; i++) {
2533 struct omap_overlay_manager *mgr;
2534 mgr = fbdev->managers[i];
2535 r = mgr->apply(mgr);
2536 if (r)
2537 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2538 }
2539
2540 DBG("mgr->apply'ed\n");
2541
2542 if (def_display) {
2543 r = omapfb_init_display(fbdev, def_display);
2544 if (r) {
2545 dev_err(fbdev->dev,
2546 "failed to initialize default "
2547 "display\n");
2548 goto cleanup;
2549 }
2550 }
2551
2552 DBG("create sysfs for fbs\n");
2553 r = omapfb_create_sysfs(fbdev);
2554 if (r) {
2555 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2556 goto cleanup;
2557 }
2558
2559 return 0;
2560
2561 cleanup:
2562 omapfb_free_resources(fbdev);
2563 omapdss_compat_uninit();
2564 err0:
2565 dev_err(&pdev->dev, "failed to setup omapfb\n");
2566 return r;
2567 }
2568
2569 static int __exit omapfb_remove(struct platform_device *pdev)
2570 {
2571 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2572
2573 /* FIXME: wait till completion of pending events */
2574
2575 omapfb_remove_sysfs(fbdev);
2576
2577 omapfb_free_resources(fbdev);
2578
2579 omapdss_compat_uninit();
2580
2581 return 0;
2582 }
2583
2584 static struct platform_driver omapfb_driver = {
2585 .probe = omapfb_probe,
2586 .remove = __exit_p(omapfb_remove),
2587 .driver = {
2588 .name = "omapfb",
2589 .owner = THIS_MODULE,
2590 },
2591 };
2592
2593 module_param_named(mode, def_mode, charp, 0);
2594 module_param_named(vram, def_vram, charp, 0);
2595 module_param_named(rotate, def_rotate, int, 0);
2596 module_param_named(vrfb, def_vrfb, bool, 0);
2597 module_param_named(mirror, def_mirror, bool, 0);
2598
2599 module_platform_driver(omapfb_driver);
2600
2601 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2602 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2603 MODULE_LICENSE("GPL v2");
kernel source for telekom puls (alcatel/mediatek)