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arm, fbdev, omap2, LLVMLinux: Remove nested function from omapfb
[deliverable/linux.git] / drivers / video / fbdev / 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_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
277 {
278 return f1->length == f2->length &&
279 f1->offset == f2->offset &&
280 f1->msb_right == f2->msb_right;
281 }
282
283 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
284 struct omapfb_colormode *color)
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.pixelclock != 0 ?
727 KHZ2PICOS(timings.pixelclock / 1000) :
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 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1838 int j;
1839
1840 for (j = 0; j < ofbi->num_overlays; j++) {
1841 struct omap_overlay *ovl = ofbi->overlays[j];
1842 ovl->disable(ovl);
1843 }
1844 }
1845
1846 for (i = 0; i < fbdev->num_fbs; i++)
1847 unregister_framebuffer(fbdev->fbs[i]);
1848
1849 /* free the reserved fbmem */
1850 omapfb_free_all_fbmem(fbdev);
1851
1852 for (i = 0; i < fbdev->num_fbs; i++) {
1853 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1854 framebuffer_release(fbdev->fbs[i]);
1855 }
1856
1857 for (i = 0; i < fbdev->num_displays; i++) {
1858 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1859
1860 if (fbdev->displays[i].auto_update_work_enabled)
1861 omapfb_stop_auto_update(fbdev, dssdev);
1862
1863 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1864 dssdev->driver->disable(dssdev);
1865
1866 dssdev->driver->disconnect(dssdev);
1867
1868 omap_dss_put_device(dssdev);
1869 }
1870
1871 if (fbdev->auto_update_wq != NULL) {
1872 flush_workqueue(fbdev->auto_update_wq);
1873 destroy_workqueue(fbdev->auto_update_wq);
1874 fbdev->auto_update_wq = NULL;
1875 }
1876
1877 dev_set_drvdata(fbdev->dev, NULL);
1878 }
1879
1880 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1881 {
1882 int r, i;
1883
1884 fbdev->num_fbs = 0;
1885
1886 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1887
1888 /* allocate fb_infos */
1889 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1890 struct fb_info *fbi;
1891 struct omapfb_info *ofbi;
1892
1893 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1894 fbdev->dev);
1895
1896 if (fbi == NULL) {
1897 dev_err(fbdev->dev,
1898 "unable to allocate memory for plane info\n");
1899 return -ENOMEM;
1900 }
1901
1902 clear_fb_info(fbi);
1903
1904 fbdev->fbs[i] = fbi;
1905
1906 ofbi = FB2OFB(fbi);
1907 ofbi->fbdev = fbdev;
1908 ofbi->id = i;
1909
1910 ofbi->region = &fbdev->regions[i];
1911 ofbi->region->id = i;
1912 init_rwsem(&ofbi->region->lock);
1913
1914 /* assign these early, so that fb alloc can use them */
1915 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1916 OMAP_DSS_ROT_DMA;
1917 ofbi->mirror = def_mirror;
1918
1919 fbdev->num_fbs++;
1920 }
1921
1922 DBG("fb_infos allocated\n");
1923
1924 /* assign overlays for the fbs */
1925 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1926 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1927
1928 ofbi->overlays[0] = fbdev->overlays[i];
1929 ofbi->num_overlays = 1;
1930 }
1931
1932 /* allocate fb memories */
1933 r = omapfb_allocate_all_fbs(fbdev);
1934 if (r) {
1935 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1936 return r;
1937 }
1938
1939 DBG("fbmems allocated\n");
1940
1941 /* setup fb_infos */
1942 for (i = 0; i < fbdev->num_fbs; i++) {
1943 struct fb_info *fbi = fbdev->fbs[i];
1944 struct omapfb_info *ofbi = FB2OFB(fbi);
1945
1946 omapfb_get_mem_region(ofbi->region);
1947 r = omapfb_fb_init(fbdev, fbi);
1948 omapfb_put_mem_region(ofbi->region);
1949
1950 if (r) {
1951 dev_err(fbdev->dev, "failed to setup fb_info\n");
1952 return r;
1953 }
1954 }
1955
1956 for (i = 0; i < fbdev->num_fbs; i++) {
1957 struct fb_info *fbi = fbdev->fbs[i];
1958 struct omapfb_info *ofbi = FB2OFB(fbi);
1959
1960 if (ofbi->region->size == 0)
1961 continue;
1962
1963 omapfb_clear_fb(fbi);
1964 }
1965
1966 DBG("fb_infos initialized\n");
1967
1968 for (i = 0; i < fbdev->num_fbs; i++) {
1969 r = register_framebuffer(fbdev->fbs[i]);
1970 if (r != 0) {
1971 dev_err(fbdev->dev,
1972 "registering framebuffer %d failed\n", i);
1973 return r;
1974 }
1975 }
1976
1977 DBG("framebuffers registered\n");
1978
1979 for (i = 0; i < fbdev->num_fbs; i++) {
1980 struct fb_info *fbi = fbdev->fbs[i];
1981 struct omapfb_info *ofbi = FB2OFB(fbi);
1982
1983 omapfb_get_mem_region(ofbi->region);
1984 r = omapfb_apply_changes(fbi, 1);
1985 omapfb_put_mem_region(ofbi->region);
1986
1987 if (r) {
1988 dev_err(fbdev->dev, "failed to change mode\n");
1989 return r;
1990 }
1991 }
1992
1993 /* Enable fb0 */
1994 if (fbdev->num_fbs > 0) {
1995 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1996
1997 if (ofbi->num_overlays > 0) {
1998 struct omap_overlay *ovl = ofbi->overlays[0];
1999
2000 ovl->manager->apply(ovl->manager);
2001
2002 r = omapfb_overlay_enable(ovl, 1);
2003
2004 if (r) {
2005 dev_err(fbdev->dev,
2006 "failed to enable overlay\n");
2007 return r;
2008 }
2009 }
2010 }
2011
2012 DBG("create_framebuffers done\n");
2013
2014 return 0;
2015 }
2016
2017 static int omapfb_mode_to_timings(const char *mode_str,
2018 struct omap_dss_device *display,
2019 struct omap_video_timings *timings, u8 *bpp)
2020 {
2021 struct fb_info *fbi;
2022 struct fb_var_screeninfo *var;
2023 struct fb_ops *fbops;
2024 int r;
2025
2026 #ifdef CONFIG_OMAP2_DSS_VENC
2027 if (strcmp(mode_str, "pal") == 0) {
2028 *timings = omap_dss_pal_timings;
2029 *bpp = 24;
2030 return 0;
2031 } else if (strcmp(mode_str, "ntsc") == 0) {
2032 *timings = omap_dss_ntsc_timings;
2033 *bpp = 24;
2034 return 0;
2035 }
2036 #endif
2037
2038 /* this is quite a hack, but I wanted to use the modedb and for
2039 * that we need fb_info and var, so we create dummy ones */
2040
2041 *bpp = 0;
2042 fbi = NULL;
2043 var = NULL;
2044 fbops = NULL;
2045
2046 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2047 if (fbi == NULL) {
2048 r = -ENOMEM;
2049 goto err;
2050 }
2051
2052 var = kzalloc(sizeof(*var), GFP_KERNEL);
2053 if (var == NULL) {
2054 r = -ENOMEM;
2055 goto err;
2056 }
2057
2058 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2059 if (fbops == NULL) {
2060 r = -ENOMEM;
2061 goto err;
2062 }
2063
2064 fbi->fbops = fbops;
2065
2066 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2067 if (r == 0) {
2068 r = -EINVAL;
2069 goto err;
2070 }
2071
2072 if (display->driver->get_timings) {
2073 display->driver->get_timings(display, timings);
2074 } else {
2075 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2076 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2077 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2078 }
2079
2080 timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000;
2081 timings->hbp = var->left_margin;
2082 timings->hfp = var->right_margin;
2083 timings->vbp = var->upper_margin;
2084 timings->vfp = var->lower_margin;
2085 timings->hsw = var->hsync_len;
2086 timings->vsw = var->vsync_len;
2087 timings->x_res = var->xres;
2088 timings->y_res = var->yres;
2089 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2090 OMAPDSS_SIG_ACTIVE_HIGH :
2091 OMAPDSS_SIG_ACTIVE_LOW;
2092 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2093 OMAPDSS_SIG_ACTIVE_HIGH :
2094 OMAPDSS_SIG_ACTIVE_LOW;
2095 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2096
2097 switch (var->bits_per_pixel) {
2098 case 16:
2099 *bpp = 16;
2100 break;
2101 case 24:
2102 case 32:
2103 default:
2104 *bpp = 24;
2105 break;
2106 }
2107
2108 r = 0;
2109
2110 err:
2111 kfree(fbi);
2112 kfree(var);
2113 kfree(fbops);
2114
2115 return r;
2116 }
2117
2118 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2119 struct omap_dss_device *display, char *mode_str)
2120 {
2121 int r;
2122 u8 bpp;
2123 struct omap_video_timings timings, temp_timings;
2124 struct omapfb_display_data *d;
2125
2126 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2127 if (r)
2128 return r;
2129
2130 d = get_display_data(fbdev, display);
2131 d->bpp_override = bpp;
2132
2133 if (display->driver->check_timings) {
2134 r = display->driver->check_timings(display, &timings);
2135 if (r)
2136 return r;
2137 } else {
2138 /* If check_timings is not present compare xres and yres */
2139 if (display->driver->get_timings) {
2140 display->driver->get_timings(display, &temp_timings);
2141
2142 if (temp_timings.x_res != timings.x_res ||
2143 temp_timings.y_res != timings.y_res)
2144 return -EINVAL;
2145 }
2146 }
2147
2148 if (display->driver->set_timings)
2149 display->driver->set_timings(display, &timings);
2150
2151 return 0;
2152 }
2153
2154 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2155 struct omap_dss_device *dssdev)
2156 {
2157 struct omapfb_display_data *d;
2158
2159 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2160
2161 d = get_display_data(fbdev, dssdev);
2162
2163 if (d->bpp_override != 0)
2164 return d->bpp_override;
2165
2166 return dssdev->driver->get_recommended_bpp(dssdev);
2167 }
2168
2169 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2170 {
2171 char *str, *options, *this_opt;
2172 int r = 0;
2173
2174 str = kstrdup(def_mode, GFP_KERNEL);
2175 if (!str)
2176 return -ENOMEM;
2177 options = str;
2178
2179 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2180 char *p, *display_str, *mode_str;
2181 struct omap_dss_device *display;
2182 int i;
2183
2184 p = strchr(this_opt, ':');
2185 if (!p) {
2186 r = -EINVAL;
2187 break;
2188 }
2189
2190 *p = 0;
2191 display_str = this_opt;
2192 mode_str = p + 1;
2193
2194 display = NULL;
2195 for (i = 0; i < fbdev->num_displays; ++i) {
2196 if (strcmp(fbdev->displays[i].dssdev->name,
2197 display_str) == 0) {
2198 display = fbdev->displays[i].dssdev;
2199 break;
2200 }
2201 }
2202
2203 if (!display) {
2204 r = -EINVAL;
2205 break;
2206 }
2207
2208 r = omapfb_set_def_mode(fbdev, display, mode_str);
2209 if (r)
2210 break;
2211 }
2212
2213 kfree(str);
2214
2215 return r;
2216 }
2217
2218 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2219 struct omap_dss_device *display,
2220 struct omap_video_timings *t)
2221 {
2222 if (display->driver->get_timings) {
2223 display->driver->get_timings(display, t);
2224 } else {
2225 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2226 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2227 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2228 }
2229
2230 t->x_res = m->xres;
2231 t->y_res = m->yres;
2232 t->pixelclock = PICOS2KHZ(m->pixclock) * 1000;
2233 t->hsw = m->hsync_len;
2234 t->hfp = m->right_margin;
2235 t->hbp = m->left_margin;
2236 t->vsw = m->vsync_len;
2237 t->vfp = m->lower_margin;
2238 t->vbp = m->upper_margin;
2239 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2240 OMAPDSS_SIG_ACTIVE_HIGH :
2241 OMAPDSS_SIG_ACTIVE_LOW;
2242 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2243 OMAPDSS_SIG_ACTIVE_HIGH :
2244 OMAPDSS_SIG_ACTIVE_LOW;
2245 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2246 }
2247
2248 static int omapfb_find_best_mode(struct omap_dss_device *display,
2249 struct omap_video_timings *timings)
2250 {
2251 struct fb_monspecs *specs;
2252 u8 *edid;
2253 int r, i, best_idx, len;
2254
2255 if (!display->driver->read_edid)
2256 return -ENODEV;
2257
2258 len = 0x80 * 2;
2259 edid = kmalloc(len, GFP_KERNEL);
2260 if (edid == NULL)
2261 return -ENOMEM;
2262
2263 r = display->driver->read_edid(display, edid, len);
2264 if (r < 0)
2265 goto err1;
2266
2267 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2268 if (specs == NULL) {
2269 r = -ENOMEM;
2270 goto err1;
2271 }
2272
2273 fb_edid_to_monspecs(edid, specs);
2274
2275 best_idx = -1;
2276
2277 for (i = 0; i < specs->modedb_len; ++i) {
2278 struct fb_videomode *m;
2279 struct omap_video_timings t;
2280
2281 m = &specs->modedb[i];
2282
2283 if (m->pixclock == 0)
2284 continue;
2285
2286 /* skip repeated pixel modes */
2287 if (m->xres == 2880 || m->xres == 1440)
2288 continue;
2289
2290 if (m->vmode & FB_VMODE_INTERLACED ||
2291 m->vmode & FB_VMODE_DOUBLE)
2292 continue;
2293
2294 fb_videomode_to_omap_timings(m, display, &t);
2295
2296 r = display->driver->check_timings(display, &t);
2297 if (r == 0) {
2298 best_idx = i;
2299 break;
2300 }
2301 }
2302
2303 if (best_idx == -1) {
2304 r = -ENOENT;
2305 goto err2;
2306 }
2307
2308 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2309 timings);
2310
2311 r = 0;
2312
2313 err2:
2314 fb_destroy_modedb(specs->modedb);
2315 kfree(specs);
2316 err1:
2317 kfree(edid);
2318
2319 return r;
2320 }
2321
2322 static int omapfb_init_display(struct omapfb2_device *fbdev,
2323 struct omap_dss_device *dssdev)
2324 {
2325 struct omap_dss_driver *dssdrv = dssdev->driver;
2326 struct omapfb_display_data *d;
2327 int r;
2328
2329 r = dssdrv->enable(dssdev);
2330 if (r) {
2331 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2332 dssdev->name);
2333 return r;
2334 }
2335
2336 d = get_display_data(fbdev, dssdev);
2337
2338 d->fbdev = fbdev;
2339
2340 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2341 u16 w, h;
2342
2343 if (auto_update) {
2344 omapfb_start_auto_update(fbdev, dssdev);
2345 d->update_mode = OMAPFB_AUTO_UPDATE;
2346 } else {
2347 d->update_mode = OMAPFB_MANUAL_UPDATE;
2348 }
2349
2350 if (dssdrv->enable_te) {
2351 r = dssdrv->enable_te(dssdev, 1);
2352 if (r) {
2353 dev_err(fbdev->dev, "Failed to set TE\n");
2354 return r;
2355 }
2356 }
2357
2358 dssdrv->get_resolution(dssdev, &w, &h);
2359 r = dssdrv->update(dssdev, 0, 0, w, h);
2360 if (r) {
2361 dev_err(fbdev->dev,
2362 "Failed to update display\n");
2363 return r;
2364 }
2365 } else {
2366 d->update_mode = OMAPFB_AUTO_UPDATE;
2367 }
2368
2369 return 0;
2370 }
2371
2372 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2373 struct omap_dss_device *def_dssdev)
2374 {
2375 int i, r;
2376 struct omap_overlay_manager *mgr;
2377
2378 r = def_dssdev->driver->connect(def_dssdev);
2379 if (r) {
2380 dev_err(fbdev->dev, "failed to connect default display\n");
2381 return r;
2382 }
2383
2384 for (i = 0; i < fbdev->num_displays; ++i) {
2385 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2386
2387 if (dssdev == def_dssdev)
2388 continue;
2389
2390 /*
2391 * We don't care if the connect succeeds or not. We just want to
2392 * connect as many displays as possible.
2393 */
2394 dssdev->driver->connect(dssdev);
2395 }
2396
2397 mgr = omapdss_find_mgr_from_display(def_dssdev);
2398
2399 if (!mgr) {
2400 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2401 return -EINVAL;
2402 }
2403
2404 for (i = 0; i < fbdev->num_overlays; i++) {
2405 struct omap_overlay *ovl = fbdev->overlays[i];
2406
2407 if (ovl->manager)
2408 ovl->unset_manager(ovl);
2409
2410 r = ovl->set_manager(ovl, mgr);
2411 if (r)
2412 dev_warn(fbdev->dev,
2413 "failed to connect overlay %s to manager %s\n",
2414 ovl->name, mgr->name);
2415 }
2416
2417 return 0;
2418 }
2419
2420 static struct omap_dss_device *
2421 omapfb_find_default_display(struct omapfb2_device *fbdev)
2422 {
2423 const char *def_name;
2424 int i;
2425
2426 /*
2427 * Search with the display name from the user or the board file,
2428 * comparing to display names and aliases
2429 */
2430
2431 def_name = omapdss_get_default_display_name();
2432
2433 if (def_name) {
2434 for (i = 0; i < fbdev->num_displays; ++i) {
2435 struct omap_dss_device *dssdev;
2436
2437 dssdev = fbdev->displays[i].dssdev;
2438
2439 if (dssdev->name && strcmp(def_name, dssdev->name) == 0)
2440 return dssdev;
2441
2442 if (strcmp(def_name, dssdev->alias) == 0)
2443 return dssdev;
2444 }
2445
2446 /* def_name given but not found */
2447 return NULL;
2448 }
2449
2450 /* then look for DT alias display0 */
2451 for (i = 0; i < fbdev->num_displays; ++i) {
2452 struct omap_dss_device *dssdev;
2453 int id;
2454
2455 dssdev = fbdev->displays[i].dssdev;
2456
2457 if (dssdev->dev->of_node == NULL)
2458 continue;
2459
2460 id = of_alias_get_id(dssdev->dev->of_node, "display");
2461 if (id == 0)
2462 return dssdev;
2463 }
2464
2465 /* return the first display we have in the list */
2466 return fbdev->displays[0].dssdev;
2467 }
2468
2469 static int omapfb_probe(struct platform_device *pdev)
2470 {
2471 struct omapfb2_device *fbdev = NULL;
2472 int r = 0;
2473 int i;
2474 struct omap_dss_device *def_display;
2475 struct omap_dss_device *dssdev;
2476
2477 DBG("omapfb_probe\n");
2478
2479 if (omapdss_is_initialized() == false)
2480 return -EPROBE_DEFER;
2481
2482 if (pdev->num_resources != 0) {
2483 dev_err(&pdev->dev, "probed for an unknown device\n");
2484 r = -ENODEV;
2485 goto err0;
2486 }
2487
2488 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2489 GFP_KERNEL);
2490 if (fbdev == NULL) {
2491 r = -ENOMEM;
2492 goto err0;
2493 }
2494
2495 if (def_vrfb && !omap_vrfb_supported()) {
2496 def_vrfb = 0;
2497 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2498 "ignoring the module parameter vrfb=y\n");
2499 }
2500
2501 r = omapdss_compat_init();
2502 if (r)
2503 goto err0;
2504
2505 mutex_init(&fbdev->mtx);
2506
2507 fbdev->dev = &pdev->dev;
2508 platform_set_drvdata(pdev, fbdev);
2509
2510 fbdev->num_displays = 0;
2511 dssdev = NULL;
2512 for_each_dss_dev(dssdev) {
2513 struct omapfb_display_data *d;
2514
2515 omap_dss_get_device(dssdev);
2516
2517 if (!dssdev->driver) {
2518 dev_warn(&pdev->dev, "no driver for display: %s\n",
2519 dssdev->name);
2520 omap_dss_put_device(dssdev);
2521 continue;
2522 }
2523
2524 d = &fbdev->displays[fbdev->num_displays++];
2525 d->dssdev = dssdev;
2526 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2527 d->update_mode = OMAPFB_MANUAL_UPDATE;
2528 else
2529 d->update_mode = OMAPFB_AUTO_UPDATE;
2530 }
2531
2532 if (fbdev->num_displays == 0) {
2533 dev_err(&pdev->dev, "no displays\n");
2534 r = -EPROBE_DEFER;
2535 goto cleanup;
2536 }
2537
2538 fbdev->num_overlays = omap_dss_get_num_overlays();
2539 for (i = 0; i < fbdev->num_overlays; i++)
2540 fbdev->overlays[i] = omap_dss_get_overlay(i);
2541
2542 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2543 for (i = 0; i < fbdev->num_managers; i++)
2544 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2545
2546 def_display = omapfb_find_default_display(fbdev);
2547 if (def_display == NULL) {
2548 dev_err(fbdev->dev, "failed to find default display\n");
2549 r = -EPROBE_DEFER;
2550 goto cleanup;
2551 }
2552
2553 r = omapfb_init_connections(fbdev, def_display);
2554 if (r) {
2555 dev_err(fbdev->dev, "failed to init overlay connections\n");
2556 goto cleanup;
2557 }
2558
2559 if (def_mode && strlen(def_mode) > 0) {
2560 if (omapfb_parse_def_modes(fbdev))
2561 dev_warn(&pdev->dev, "cannot parse default modes\n");
2562 } else if (def_display && def_display->driver->set_timings &&
2563 def_display->driver->check_timings) {
2564 struct omap_video_timings t;
2565
2566 r = omapfb_find_best_mode(def_display, &t);
2567
2568 if (r == 0)
2569 def_display->driver->set_timings(def_display, &t);
2570 }
2571
2572 r = omapfb_create_framebuffers(fbdev);
2573 if (r)
2574 goto cleanup;
2575
2576 for (i = 0; i < fbdev->num_managers; i++) {
2577 struct omap_overlay_manager *mgr;
2578 mgr = fbdev->managers[i];
2579 r = mgr->apply(mgr);
2580 if (r)
2581 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2582 }
2583
2584 DBG("mgr->apply'ed\n");
2585
2586 if (def_display) {
2587 r = omapfb_init_display(fbdev, def_display);
2588 if (r) {
2589 dev_err(fbdev->dev,
2590 "failed to initialize default "
2591 "display\n");
2592 goto cleanup;
2593 }
2594 }
2595
2596 DBG("create sysfs for fbs\n");
2597 r = omapfb_create_sysfs(fbdev);
2598 if (r) {
2599 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2600 goto cleanup;
2601 }
2602
2603 if (def_display) {
2604 u16 w, h;
2605
2606 def_display->driver->get_resolution(def_display, &w, &h);
2607
2608 dev_info(fbdev->dev, "using display '%s' mode %dx%d\n",
2609 def_display->name, w, h);
2610 }
2611
2612 return 0;
2613
2614 cleanup:
2615 omapfb_free_resources(fbdev);
2616 omapdss_compat_uninit();
2617 err0:
2618 dev_err(&pdev->dev, "failed to setup omapfb\n");
2619 return r;
2620 }
2621
2622 static int __exit omapfb_remove(struct platform_device *pdev)
2623 {
2624 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2625
2626 /* FIXME: wait till completion of pending events */
2627
2628 omapfb_remove_sysfs(fbdev);
2629
2630 omapfb_free_resources(fbdev);
2631
2632 omapdss_compat_uninit();
2633
2634 return 0;
2635 }
2636
2637 static struct platform_driver omapfb_driver = {
2638 .probe = omapfb_probe,
2639 .remove = __exit_p(omapfb_remove),
2640 .driver = {
2641 .name = "omapfb",
2642 .owner = THIS_MODULE,
2643 },
2644 };
2645
2646 module_param_named(mode, def_mode, charp, 0);
2647 module_param_named(vram, def_vram, charp, 0);
2648 module_param_named(rotate, def_rotate, int, 0);
2649 module_param_named(vrfb, def_vrfb, bool, 0);
2650 module_param_named(mirror, def_mirror, bool, 0);
2651
2652 module_platform_driver(omapfb_driver);
2653
2654 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2655 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2656 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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