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Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into...
[deliverable/linux.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 <plat/vram.h>
35 #include <plat/vrfb.h>
36
37 #include "omapfb.h"
38
39 #define MODULE_NAME "omapfb"
40
41 #define OMAPFB_PLANE_XRES_MIN 8
42 #define OMAPFB_PLANE_YRES_MIN 8
43
44 static char *def_mode;
45 static char *def_vram;
46 static bool def_vrfb;
47 static int def_rotate;
48 static bool def_mirror;
49 static bool auto_update;
50 static unsigned int auto_update_freq;
51 module_param(auto_update, bool, 0);
52 module_param(auto_update_freq, uint, 0644);
53
54 #ifdef DEBUG
55 bool omapfb_debug;
56 module_param_named(debug, omapfb_debug, bool, 0644);
57 static bool omapfb_test_pattern;
58 module_param_named(test, omapfb_test_pattern, bool, 0644);
59 #endif
60
61 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
62 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
63 struct omap_dss_device *dssdev);
64
65 #ifdef DEBUG
66 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
67 {
68 struct fb_var_screeninfo *var = &fbi->var;
69 struct fb_fix_screeninfo *fix = &fbi->fix;
70 void __iomem *addr = fbi->screen_base;
71 const unsigned bytespp = var->bits_per_pixel >> 3;
72 const unsigned line_len = fix->line_length / bytespp;
73
74 int r = (color >> 16) & 0xff;
75 int g = (color >> 8) & 0xff;
76 int b = (color >> 0) & 0xff;
77
78 if (var->bits_per_pixel == 16) {
79 u16 __iomem *p = (u16 __iomem *)addr;
80 p += y * line_len + x;
81
82 r = r * 32 / 256;
83 g = g * 64 / 256;
84 b = b * 32 / 256;
85
86 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
87 } else if (var->bits_per_pixel == 24) {
88 u8 __iomem *p = (u8 __iomem *)addr;
89 p += (y * line_len + x) * 3;
90
91 __raw_writeb(b, p + 0);
92 __raw_writeb(g, p + 1);
93 __raw_writeb(r, p + 2);
94 } else if (var->bits_per_pixel == 32) {
95 u32 __iomem *p = (u32 __iomem *)addr;
96 p += y * line_len + x;
97 __raw_writel(color, p);
98 }
99 }
100
101 static void fill_fb(struct fb_info *fbi)
102 {
103 struct fb_var_screeninfo *var = &fbi->var;
104 const short w = var->xres_virtual;
105 const short h = var->yres_virtual;
106 void __iomem *addr = fbi->screen_base;
107 int y, x;
108
109 if (!addr)
110 return;
111
112 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
113
114 for (y = 0; y < h; y++) {
115 for (x = 0; x < w; x++) {
116 if (x < 20 && y < 20)
117 draw_pixel(fbi, x, y, 0xffffff);
118 else if (x < 20 && (y > 20 && y < h - 20))
119 draw_pixel(fbi, x, y, 0xff);
120 else if (y < 20 && (x > 20 && x < w - 20))
121 draw_pixel(fbi, x, y, 0xff00);
122 else if (x > w - 20 && (y > 20 && y < h - 20))
123 draw_pixel(fbi, x, y, 0xff0000);
124 else if (y > h - 20 && (x > 20 && x < w - 20))
125 draw_pixel(fbi, x, y, 0xffff00);
126 else if (x == 20 || x == w - 20 ||
127 y == 20 || y == h - 20)
128 draw_pixel(fbi, x, y, 0xffffff);
129 else if (x == y || w - x == h - y)
130 draw_pixel(fbi, x, y, 0xff00ff);
131 else if (w - x == y || x == h - y)
132 draw_pixel(fbi, x, y, 0x00ffff);
133 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
134 int t = x * 3 / w;
135 unsigned r = 0, g = 0, b = 0;
136 unsigned c;
137 if (var->bits_per_pixel == 16) {
138 if (t == 0)
139 b = (y % 32) * 256 / 32;
140 else if (t == 1)
141 g = (y % 64) * 256 / 64;
142 else if (t == 2)
143 r = (y % 32) * 256 / 32;
144 } else {
145 if (t == 0)
146 b = (y % 256);
147 else if (t == 1)
148 g = (y % 256);
149 else if (t == 2)
150 r = (y % 256);
151 }
152 c = (r << 16) | (g << 8) | (b << 0);
153 draw_pixel(fbi, x, y, c);
154 } else {
155 draw_pixel(fbi, x, y, 0);
156 }
157 }
158 }
159 }
160 #endif
161
162 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
163 {
164 const struct vrfb *vrfb = &ofbi->region->vrfb;
165 unsigned offset;
166
167 switch (rot) {
168 case FB_ROTATE_UR:
169 offset = 0;
170 break;
171 case FB_ROTATE_CW:
172 offset = vrfb->yoffset;
173 break;
174 case FB_ROTATE_UD:
175 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
176 break;
177 case FB_ROTATE_CCW:
178 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
179 break;
180 default:
181 BUG();
182 return 0;
183 }
184
185 offset *= vrfb->bytespp;
186
187 return offset;
188 }
189
190 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
191 {
192 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
193 return ofbi->region->vrfb.paddr[rot]
194 + omapfb_get_vrfb_offset(ofbi, rot);
195 } else {
196 return ofbi->region->paddr;
197 }
198 }
199
200 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
201 {
202 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
203 return ofbi->region->vrfb.paddr[0];
204 else
205 return ofbi->region->paddr;
206 }
207
208 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
209 {
210 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
211 return ofbi->region->vrfb.vaddr[0];
212 else
213 return ofbi->region->vaddr;
214 }
215
216 static struct omapfb_colormode omapfb_colormodes[] = {
217 {
218 .dssmode = OMAP_DSS_COLOR_UYVY,
219 .bits_per_pixel = 16,
220 .nonstd = OMAPFB_COLOR_YUV422,
221 }, {
222 .dssmode = OMAP_DSS_COLOR_YUV2,
223 .bits_per_pixel = 16,
224 .nonstd = OMAPFB_COLOR_YUY422,
225 }, {
226 .dssmode = OMAP_DSS_COLOR_ARGB16,
227 .bits_per_pixel = 16,
228 .red = { .length = 4, .offset = 8, .msb_right = 0 },
229 .green = { .length = 4, .offset = 4, .msb_right = 0 },
230 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
231 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
232 }, {
233 .dssmode = OMAP_DSS_COLOR_RGB16,
234 .bits_per_pixel = 16,
235 .red = { .length = 5, .offset = 11, .msb_right = 0 },
236 .green = { .length = 6, .offset = 5, .msb_right = 0 },
237 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
238 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
239 }, {
240 .dssmode = OMAP_DSS_COLOR_RGB24P,
241 .bits_per_pixel = 24,
242 .red = { .length = 8, .offset = 16, .msb_right = 0 },
243 .green = { .length = 8, .offset = 8, .msb_right = 0 },
244 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
245 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
246 }, {
247 .dssmode = OMAP_DSS_COLOR_RGB24U,
248 .bits_per_pixel = 32,
249 .red = { .length = 8, .offset = 16, .msb_right = 0 },
250 .green = { .length = 8, .offset = 8, .msb_right = 0 },
251 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
252 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
253 }, {
254 .dssmode = OMAP_DSS_COLOR_ARGB32,
255 .bits_per_pixel = 32,
256 .red = { .length = 8, .offset = 16, .msb_right = 0 },
257 .green = { .length = 8, .offset = 8, .msb_right = 0 },
258 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
259 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
260 }, {
261 .dssmode = OMAP_DSS_COLOR_RGBA32,
262 .bits_per_pixel = 32,
263 .red = { .length = 8, .offset = 24, .msb_right = 0 },
264 .green = { .length = 8, .offset = 16, .msb_right = 0 },
265 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
266 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
267 }, {
268 .dssmode = OMAP_DSS_COLOR_RGBX32,
269 .bits_per_pixel = 32,
270 .red = { .length = 8, .offset = 24, .msb_right = 0 },
271 .green = { .length = 8, .offset = 16, .msb_right = 0 },
272 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
273 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
274 },
275 };
276
277 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
278 struct omapfb_colormode *color)
279 {
280 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
281 {
282 return f1->length == f2->length &&
283 f1->offset == f2->offset &&
284 f1->msb_right == f2->msb_right;
285 }
286
287 if (var->bits_per_pixel == 0 ||
288 var->red.length == 0 ||
289 var->blue.length == 0 ||
290 var->green.length == 0)
291 return 0;
292
293 return var->bits_per_pixel == color->bits_per_pixel &&
294 cmp_component(&var->red, &color->red) &&
295 cmp_component(&var->green, &color->green) &&
296 cmp_component(&var->blue, &color->blue) &&
297 cmp_component(&var->transp, &color->transp);
298 }
299
300 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
301 struct omapfb_colormode *color)
302 {
303 var->bits_per_pixel = color->bits_per_pixel;
304 var->nonstd = color->nonstd;
305 var->red = color->red;
306 var->green = color->green;
307 var->blue = color->blue;
308 var->transp = color->transp;
309 }
310
311 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
312 enum omap_color_mode *mode)
313 {
314 enum omap_color_mode dssmode;
315 int i;
316
317 /* first match with nonstd field */
318 if (var->nonstd) {
319 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
320 struct omapfb_colormode *m = &omapfb_colormodes[i];
321 if (var->nonstd == m->nonstd) {
322 assign_colormode_to_var(var, m);
323 *mode = m->dssmode;
324 return 0;
325 }
326 }
327
328 return -EINVAL;
329 }
330
331 /* then try exact match of bpp and colors */
332 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
333 struct omapfb_colormode *m = &omapfb_colormodes[i];
334 if (cmp_var_to_colormode(var, m)) {
335 assign_colormode_to_var(var, m);
336 *mode = m->dssmode;
337 return 0;
338 }
339 }
340
341 /* match with bpp if user has not filled color fields
342 * properly */
343 switch (var->bits_per_pixel) {
344 case 1:
345 dssmode = OMAP_DSS_COLOR_CLUT1;
346 break;
347 case 2:
348 dssmode = OMAP_DSS_COLOR_CLUT2;
349 break;
350 case 4:
351 dssmode = OMAP_DSS_COLOR_CLUT4;
352 break;
353 case 8:
354 dssmode = OMAP_DSS_COLOR_CLUT8;
355 break;
356 case 12:
357 dssmode = OMAP_DSS_COLOR_RGB12U;
358 break;
359 case 16:
360 dssmode = OMAP_DSS_COLOR_RGB16;
361 break;
362 case 24:
363 dssmode = OMAP_DSS_COLOR_RGB24P;
364 break;
365 case 32:
366 dssmode = OMAP_DSS_COLOR_RGB24U;
367 break;
368 default:
369 return -EINVAL;
370 }
371
372 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
373 struct omapfb_colormode *m = &omapfb_colormodes[i];
374 if (dssmode == m->dssmode) {
375 assign_colormode_to_var(var, m);
376 *mode = m->dssmode;
377 return 0;
378 }
379 }
380
381 return -EINVAL;
382 }
383
384 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
385 {
386 int xres_min = OMAPFB_PLANE_XRES_MIN;
387 int xres_max = 2048;
388 int yres_min = OMAPFB_PLANE_YRES_MIN;
389 int yres_max = 2048;
390
391 /* XXX: some applications seem to set virtual res to 0. */
392 if (var->xres_virtual == 0)
393 var->xres_virtual = var->xres;
394
395 if (var->yres_virtual == 0)
396 var->yres_virtual = var->yres;
397
398 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
399 return -EINVAL;
400
401 if (var->xres < xres_min)
402 var->xres = xres_min;
403 if (var->yres < yres_min)
404 var->yres = yres_min;
405 if (var->xres > xres_max)
406 var->xres = xres_max;
407 if (var->yres > yres_max)
408 var->yres = yres_max;
409
410 if (var->xres > var->xres_virtual)
411 var->xres = var->xres_virtual;
412 if (var->yres > var->yres_virtual)
413 var->yres = var->yres_virtual;
414
415 return 0;
416 }
417
418 static void shrink_height(unsigned long max_frame_size,
419 struct fb_var_screeninfo *var)
420 {
421 DBG("can't fit FB into memory, reducing y\n");
422 var->yres_virtual = max_frame_size /
423 (var->xres_virtual * var->bits_per_pixel >> 3);
424
425 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
426 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
427
428 if (var->yres > var->yres_virtual)
429 var->yres = var->yres_virtual;
430 }
431
432 static void shrink_width(unsigned long max_frame_size,
433 struct fb_var_screeninfo *var)
434 {
435 DBG("can't fit FB into memory, reducing x\n");
436 var->xres_virtual = max_frame_size / var->yres_virtual /
437 (var->bits_per_pixel >> 3);
438
439 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
440 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
441
442 if (var->xres > var->xres_virtual)
443 var->xres = var->xres_virtual;
444 }
445
446 static int check_vrfb_fb_size(unsigned long region_size,
447 const struct fb_var_screeninfo *var)
448 {
449 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
450 var->yres_virtual, var->bits_per_pixel >> 3);
451
452 return min_phys_size > region_size ? -EINVAL : 0;
453 }
454
455 static int check_fb_size(const struct omapfb_info *ofbi,
456 struct fb_var_screeninfo *var)
457 {
458 unsigned long max_frame_size = ofbi->region->size;
459 int bytespp = var->bits_per_pixel >> 3;
460 unsigned long line_size = var->xres_virtual * bytespp;
461
462 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
463 /* One needs to check for both VRFB and OMAPFB limitations. */
464 if (check_vrfb_fb_size(max_frame_size, var))
465 shrink_height(omap_vrfb_max_height(
466 max_frame_size, var->xres_virtual, bytespp) *
467 line_size, var);
468
469 if (check_vrfb_fb_size(max_frame_size, var)) {
470 DBG("cannot fit FB to memory\n");
471 return -EINVAL;
472 }
473
474 return 0;
475 }
476
477 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
478
479 if (line_size * var->yres_virtual > max_frame_size)
480 shrink_height(max_frame_size, var);
481
482 if (line_size * var->yres_virtual > max_frame_size) {
483 shrink_width(max_frame_size, var);
484 line_size = var->xres_virtual * bytespp;
485 }
486
487 if (line_size * var->yres_virtual > max_frame_size) {
488 DBG("cannot fit FB to memory\n");
489 return -EINVAL;
490 }
491
492 return 0;
493 }
494
495 /*
496 * Consider if VRFB assisted rotation is in use and if the virtual space for
497 * the zero degree view needs to be mapped. The need for mapping also acts as
498 * the trigger for setting up the hardware on the context in question. This
499 * ensures that one does not attempt to access the virtual view before the
500 * hardware is serving the address translations.
501 */
502 static int setup_vrfb_rotation(struct fb_info *fbi)
503 {
504 struct omapfb_info *ofbi = FB2OFB(fbi);
505 struct omapfb2_mem_region *rg = ofbi->region;
506 struct vrfb *vrfb = &rg->vrfb;
507 struct fb_var_screeninfo *var = &fbi->var;
508 struct fb_fix_screeninfo *fix = &fbi->fix;
509 unsigned bytespp;
510 bool yuv_mode;
511 enum omap_color_mode mode;
512 int r;
513 bool reconf;
514
515 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
516 return 0;
517
518 DBG("setup_vrfb_rotation\n");
519
520 r = fb_mode_to_dss_mode(var, &mode);
521 if (r)
522 return r;
523
524 bytespp = var->bits_per_pixel >> 3;
525
526 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
527
528 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
529 * is enabled/disabled, or if bytes per pixel changes */
530
531 /* XXX we shouldn't allow this when framebuffer is mmapped */
532
533 reconf = false;
534
535 if (yuv_mode != vrfb->yuv_mode)
536 reconf = true;
537 else if (bytespp != vrfb->bytespp)
538 reconf = true;
539 else if (vrfb->xres != var->xres_virtual ||
540 vrfb->yres != var->yres_virtual)
541 reconf = true;
542
543 if (vrfb->vaddr[0] && reconf) {
544 fbi->screen_base = NULL;
545 fix->smem_start = 0;
546 fix->smem_len = 0;
547 iounmap(vrfb->vaddr[0]);
548 vrfb->vaddr[0] = NULL;
549 DBG("setup_vrfb_rotation: reset fb\n");
550 }
551
552 if (vrfb->vaddr[0])
553 return 0;
554
555 omap_vrfb_setup(&rg->vrfb, rg->paddr,
556 var->xres_virtual,
557 var->yres_virtual,
558 bytespp, yuv_mode);
559
560 /* Now one can ioremap the 0 angle view */
561 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
562 if (r)
563 return r;
564
565 /* used by open/write in fbmem.c */
566 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
567
568 fix->smem_start = ofbi->region->vrfb.paddr[0];
569
570 switch (var->nonstd) {
571 case OMAPFB_COLOR_YUV422:
572 case OMAPFB_COLOR_YUY422:
573 fix->line_length =
574 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
575 break;
576 default:
577 fix->line_length =
578 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
579 break;
580 }
581
582 fix->smem_len = var->yres_virtual * fix->line_length;
583
584 return 0;
585 }
586
587 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
588 struct fb_var_screeninfo *var)
589 {
590 int i;
591
592 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
593 struct omapfb_colormode *mode = &omapfb_colormodes[i];
594 if (dssmode == mode->dssmode) {
595 assign_colormode_to_var(var, mode);
596 return 0;
597 }
598 }
599 return -ENOENT;
600 }
601
602 void set_fb_fix(struct fb_info *fbi)
603 {
604 struct fb_fix_screeninfo *fix = &fbi->fix;
605 struct fb_var_screeninfo *var = &fbi->var;
606 struct omapfb_info *ofbi = FB2OFB(fbi);
607 struct omapfb2_mem_region *rg = ofbi->region;
608
609 DBG("set_fb_fix\n");
610
611 /* used by open/write in fbmem.c */
612 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
613
614 /* used by mmap in fbmem.c */
615 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
616 switch (var->nonstd) {
617 case OMAPFB_COLOR_YUV422:
618 case OMAPFB_COLOR_YUY422:
619 fix->line_length =
620 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
621 break;
622 default:
623 fix->line_length =
624 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
625 break;
626 }
627
628 fix->smem_len = var->yres_virtual * fix->line_length;
629 } else {
630 fix->line_length =
631 (var->xres_virtual * var->bits_per_pixel) >> 3;
632 fix->smem_len = rg->size;
633 }
634
635 fix->smem_start = omapfb_get_region_paddr(ofbi);
636
637 fix->type = FB_TYPE_PACKED_PIXELS;
638
639 if (var->nonstd)
640 fix->visual = FB_VISUAL_PSEUDOCOLOR;
641 else {
642 switch (var->bits_per_pixel) {
643 case 32:
644 case 24:
645 case 16:
646 case 12:
647 fix->visual = FB_VISUAL_TRUECOLOR;
648 /* 12bpp is stored in 16 bits */
649 break;
650 case 1:
651 case 2:
652 case 4:
653 case 8:
654 fix->visual = FB_VISUAL_PSEUDOCOLOR;
655 break;
656 }
657 }
658
659 fix->accel = FB_ACCEL_NONE;
660
661 fix->xpanstep = 1;
662 fix->ypanstep = 1;
663 }
664
665 /* check new var and possibly modify it to be ok */
666 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
667 {
668 struct omapfb_info *ofbi = FB2OFB(fbi);
669 struct omap_dss_device *display = fb2display(fbi);
670 enum omap_color_mode mode = 0;
671 int i;
672 int r;
673
674 DBG("check_fb_var %d\n", ofbi->id);
675
676 WARN_ON(!atomic_read(&ofbi->region->lock_count));
677
678 r = fb_mode_to_dss_mode(var, &mode);
679 if (r) {
680 DBG("cannot convert var to omap dss mode\n");
681 return r;
682 }
683
684 for (i = 0; i < ofbi->num_overlays; ++i) {
685 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
686 DBG("invalid mode\n");
687 return -EINVAL;
688 }
689 }
690
691 if (var->rotate > 3)
692 return -EINVAL;
693
694 if (check_fb_res_bounds(var))
695 return -EINVAL;
696
697 /* When no memory is allocated ignore the size check */
698 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
699 return -EINVAL;
700
701 if (var->xres + var->xoffset > var->xres_virtual)
702 var->xoffset = var->xres_virtual - var->xres;
703 if (var->yres + var->yoffset > var->yres_virtual)
704 var->yoffset = var->yres_virtual - var->yres;
705
706 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
707 var->xres, var->yres,
708 var->xres_virtual, var->yres_virtual);
709
710 if (display && display->driver->get_dimensions) {
711 u32 w, h;
712 display->driver->get_dimensions(display, &w, &h);
713 var->width = DIV_ROUND_CLOSEST(w, 1000);
714 var->height = DIV_ROUND_CLOSEST(h, 1000);
715 } else {
716 var->height = -1;
717 var->width = -1;
718 }
719
720 var->grayscale = 0;
721
722 if (display && display->driver->get_timings) {
723 struct omap_video_timings timings;
724 display->driver->get_timings(display, &timings);
725
726 /* pixclock in ps, the rest in pixclock */
727 var->pixclock = timings.pixel_clock != 0 ?
728 KHZ2PICOS(timings.pixel_clock) :
729 0;
730 var->left_margin = timings.hbp;
731 var->right_margin = timings.hfp;
732 var->upper_margin = timings.vbp;
733 var->lower_margin = timings.vfp;
734 var->hsync_len = timings.hsw;
735 var->vsync_len = timings.vsw;
736 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
737 FB_SYNC_HOR_HIGH_ACT : 0;
738 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
739 FB_SYNC_VERT_HIGH_ACT : 0;
740 var->vmode = timings.interlace ?
741 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
742 } else {
743 var->pixclock = 0;
744 var->left_margin = 0;
745 var->right_margin = 0;
746 var->upper_margin = 0;
747 var->lower_margin = 0;
748 var->hsync_len = 0;
749 var->vsync_len = 0;
750 var->sync = 0;
751 var->vmode = FB_VMODE_NONINTERLACED;
752 }
753
754 return 0;
755 }
756
757 /*
758 * ---------------------------------------------------------------------------
759 * fbdev framework callbacks
760 * ---------------------------------------------------------------------------
761 */
762 static int omapfb_open(struct fb_info *fbi, int user)
763 {
764 return 0;
765 }
766
767 static int omapfb_release(struct fb_info *fbi, int user)
768 {
769 return 0;
770 }
771
772 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
773 const struct fb_fix_screeninfo *fix, int rotation)
774 {
775 unsigned offset;
776
777 offset = var->yoffset * fix->line_length +
778 var->xoffset * (var->bits_per_pixel >> 3);
779
780 return offset;
781 }
782
783 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
784 const struct fb_fix_screeninfo *fix, int rotation)
785 {
786 unsigned offset;
787
788 if (rotation == FB_ROTATE_UD)
789 offset = (var->yres_virtual - var->yres) *
790 fix->line_length;
791 else if (rotation == FB_ROTATE_CW)
792 offset = (var->yres_virtual - var->yres) *
793 (var->bits_per_pixel >> 3);
794 else
795 offset = 0;
796
797 if (rotation == FB_ROTATE_UR)
798 offset += var->yoffset * fix->line_length +
799 var->xoffset * (var->bits_per_pixel >> 3);
800 else if (rotation == FB_ROTATE_UD)
801 offset -= var->yoffset * fix->line_length +
802 var->xoffset * (var->bits_per_pixel >> 3);
803 else if (rotation == FB_ROTATE_CW)
804 offset -= var->xoffset * fix->line_length +
805 var->yoffset * (var->bits_per_pixel >> 3);
806 else if (rotation == FB_ROTATE_CCW)
807 offset += var->xoffset * fix->line_length +
808 var->yoffset * (var->bits_per_pixel >> 3);
809
810 return offset;
811 }
812
813 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
814 const struct fb_var_screeninfo *var,
815 const struct fb_fix_screeninfo *fix,
816 int rotation, u32 *paddr)
817 {
818 u32 data_start_p;
819 int offset;
820
821 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
822 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
823 else
824 data_start_p = omapfb_get_region_paddr(ofbi);
825
826 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
827 offset = calc_rotation_offset_vrfb(var, fix, rotation);
828 else
829 offset = calc_rotation_offset_dma(var, fix, rotation);
830
831 data_start_p += offset;
832
833 if (offset)
834 DBG("offset %d, %d = %d\n",
835 var->xoffset, var->yoffset, offset);
836
837 DBG("paddr %x\n", data_start_p);
838
839 *paddr = data_start_p;
840 }
841
842 /* setup overlay according to the fb */
843 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
844 u16 posx, u16 posy, u16 outw, u16 outh)
845 {
846 int r = 0;
847 struct omapfb_info *ofbi = FB2OFB(fbi);
848 struct fb_var_screeninfo *var = &fbi->var;
849 struct fb_fix_screeninfo *fix = &fbi->fix;
850 enum omap_color_mode mode = 0;
851 u32 data_start_p = 0;
852 struct omap_overlay_info info;
853 int xres, yres;
854 int screen_width;
855 int mirror;
856 int rotation = var->rotate;
857 int i;
858
859 WARN_ON(!atomic_read(&ofbi->region->lock_count));
860
861 for (i = 0; i < ofbi->num_overlays; i++) {
862 if (ovl != ofbi->overlays[i])
863 continue;
864
865 rotation = (rotation + ofbi->rotation[i]) % 4;
866 break;
867 }
868
869 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
870 posx, posy, outw, outh);
871
872 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
873 xres = var->yres;
874 yres = var->xres;
875 } else {
876 xres = var->xres;
877 yres = var->yres;
878 }
879
880 if (ofbi->region->size)
881 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
882
883 r = fb_mode_to_dss_mode(var, &mode);
884 if (r) {
885 DBG("fb_mode_to_dss_mode failed");
886 goto err;
887 }
888
889 switch (var->nonstd) {
890 case OMAPFB_COLOR_YUV422:
891 case OMAPFB_COLOR_YUY422:
892 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
893 screen_width = fix->line_length
894 / (var->bits_per_pixel >> 2);
895 break;
896 }
897 default:
898 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
899 break;
900 }
901
902 ovl->get_overlay_info(ovl, &info);
903
904 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
905 mirror = 0;
906 else
907 mirror = ofbi->mirror;
908
909 info.paddr = data_start_p;
910 info.screen_width = screen_width;
911 info.width = xres;
912 info.height = yres;
913 info.color_mode = mode;
914 info.rotation_type = ofbi->rotation_type;
915 info.rotation = rotation;
916 info.mirror = mirror;
917
918 info.pos_x = posx;
919 info.pos_y = posy;
920 info.out_width = outw;
921 info.out_height = outh;
922
923 r = ovl->set_overlay_info(ovl, &info);
924 if (r) {
925 DBG("ovl->setup_overlay_info failed\n");
926 goto err;
927 }
928
929 return 0;
930
931 err:
932 DBG("setup_overlay failed\n");
933 return r;
934 }
935
936 /* apply var to the overlay */
937 int omapfb_apply_changes(struct fb_info *fbi, int init)
938 {
939 int r = 0;
940 struct omapfb_info *ofbi = FB2OFB(fbi);
941 struct fb_var_screeninfo *var = &fbi->var;
942 struct omap_overlay *ovl;
943 u16 posx, posy;
944 u16 outw, outh;
945 int i;
946
947 #ifdef DEBUG
948 if (omapfb_test_pattern)
949 fill_fb(fbi);
950 #endif
951
952 WARN_ON(!atomic_read(&ofbi->region->lock_count));
953
954 for (i = 0; i < ofbi->num_overlays; i++) {
955 ovl = ofbi->overlays[i];
956
957 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
958
959 if (ofbi->region->size == 0) {
960 /* the fb is not available. disable the overlay */
961 omapfb_overlay_enable(ovl, 0);
962 if (!init && ovl->manager)
963 ovl->manager->apply(ovl->manager);
964 continue;
965 }
966
967 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
968 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
969 if (rotation == FB_ROTATE_CW ||
970 rotation == FB_ROTATE_CCW) {
971 outw = var->yres;
972 outh = var->xres;
973 } else {
974 outw = var->xres;
975 outh = var->yres;
976 }
977 } else {
978 struct omap_overlay_info info;
979 ovl->get_overlay_info(ovl, &info);
980 outw = info.out_width;
981 outh = info.out_height;
982 }
983
984 if (init) {
985 posx = 0;
986 posy = 0;
987 } else {
988 struct omap_overlay_info info;
989 ovl->get_overlay_info(ovl, &info);
990 posx = info.pos_x;
991 posy = info.pos_y;
992 }
993
994 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
995 if (r)
996 goto err;
997
998 if (!init && ovl->manager)
999 ovl->manager->apply(ovl->manager);
1000 }
1001 return 0;
1002 err:
1003 DBG("apply_changes failed\n");
1004 return r;
1005 }
1006
1007 /* checks var and eventually tweaks it to something supported,
1008 * DO NOT MODIFY PAR */
1009 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1010 {
1011 struct omapfb_info *ofbi = FB2OFB(fbi);
1012 int r;
1013
1014 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1015
1016 omapfb_get_mem_region(ofbi->region);
1017
1018 r = check_fb_var(fbi, var);
1019
1020 omapfb_put_mem_region(ofbi->region);
1021
1022 return r;
1023 }
1024
1025 /* set the video mode according to info->var */
1026 static int omapfb_set_par(struct fb_info *fbi)
1027 {
1028 struct omapfb_info *ofbi = FB2OFB(fbi);
1029 int r;
1030
1031 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1032
1033 omapfb_get_mem_region(ofbi->region);
1034
1035 set_fb_fix(fbi);
1036
1037 r = setup_vrfb_rotation(fbi);
1038 if (r)
1039 goto out;
1040
1041 r = omapfb_apply_changes(fbi, 0);
1042
1043 out:
1044 omapfb_put_mem_region(ofbi->region);
1045
1046 return r;
1047 }
1048
1049 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1050 struct fb_info *fbi)
1051 {
1052 struct omapfb_info *ofbi = FB2OFB(fbi);
1053 struct fb_var_screeninfo new_var;
1054 int r;
1055
1056 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1057
1058 if (var->xoffset == fbi->var.xoffset &&
1059 var->yoffset == fbi->var.yoffset)
1060 return 0;
1061
1062 new_var = fbi->var;
1063 new_var.xoffset = var->xoffset;
1064 new_var.yoffset = var->yoffset;
1065
1066 fbi->var = new_var;
1067
1068 omapfb_get_mem_region(ofbi->region);
1069
1070 r = omapfb_apply_changes(fbi, 0);
1071
1072 omapfb_put_mem_region(ofbi->region);
1073
1074 return r;
1075 }
1076
1077 static void mmap_user_open(struct vm_area_struct *vma)
1078 {
1079 struct omapfb2_mem_region *rg = vma->vm_private_data;
1080
1081 omapfb_get_mem_region(rg);
1082 atomic_inc(&rg->map_count);
1083 omapfb_put_mem_region(rg);
1084 }
1085
1086 static void mmap_user_close(struct vm_area_struct *vma)
1087 {
1088 struct omapfb2_mem_region *rg = vma->vm_private_data;
1089
1090 omapfb_get_mem_region(rg);
1091 atomic_dec(&rg->map_count);
1092 omapfb_put_mem_region(rg);
1093 }
1094
1095 static struct vm_operations_struct mmap_user_ops = {
1096 .open = mmap_user_open,
1097 .close = mmap_user_close,
1098 };
1099
1100 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1101 {
1102 struct omapfb_info *ofbi = FB2OFB(fbi);
1103 struct fb_fix_screeninfo *fix = &fbi->fix;
1104 struct omapfb2_mem_region *rg;
1105 unsigned long off;
1106 unsigned long start;
1107 u32 len;
1108 int r = -EINVAL;
1109
1110 if (vma->vm_end - vma->vm_start == 0)
1111 return 0;
1112 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1113 return -EINVAL;
1114 off = vma->vm_pgoff << PAGE_SHIFT;
1115
1116 rg = omapfb_get_mem_region(ofbi->region);
1117
1118 start = omapfb_get_region_paddr(ofbi);
1119 len = fix->smem_len;
1120 if (off >= len)
1121 goto error;
1122 if ((vma->vm_end - vma->vm_start + off) > len)
1123 goto error;
1124
1125 off += start;
1126
1127 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1128
1129 vma->vm_pgoff = off >> PAGE_SHIFT;
1130 vma->vm_flags |= VM_IO | VM_RESERVED;
1131 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1132 vma->vm_ops = &mmap_user_ops;
1133 vma->vm_private_data = rg;
1134 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1135 vma->vm_end - vma->vm_start,
1136 vma->vm_page_prot)) {
1137 r = -EAGAIN;
1138 goto error;
1139 }
1140
1141 /* vm_ops.open won't be called for mmap itself. */
1142 atomic_inc(&rg->map_count);
1143
1144 omapfb_put_mem_region(rg);
1145
1146 return 0;
1147
1148 error:
1149 omapfb_put_mem_region(ofbi->region);
1150
1151 return r;
1152 }
1153
1154 /* Store a single color palette entry into a pseudo palette or the hardware
1155 * palette if one is available. For now we support only 16bpp and thus store
1156 * the entry only to the pseudo palette.
1157 */
1158 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1159 u_int blue, u_int transp, int update_hw_pal)
1160 {
1161 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1162 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1163 struct fb_var_screeninfo *var = &fbi->var;
1164 int r = 0;
1165
1166 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1167
1168 /*switch (plane->color_mode) {*/
1169 switch (mode) {
1170 case OMAPFB_COLOR_YUV422:
1171 case OMAPFB_COLOR_YUV420:
1172 case OMAPFB_COLOR_YUY422:
1173 r = -EINVAL;
1174 break;
1175 case OMAPFB_COLOR_CLUT_8BPP:
1176 case OMAPFB_COLOR_CLUT_4BPP:
1177 case OMAPFB_COLOR_CLUT_2BPP:
1178 case OMAPFB_COLOR_CLUT_1BPP:
1179 /*
1180 if (fbdev->ctrl->setcolreg)
1181 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1182 transp, update_hw_pal);
1183 */
1184 /* Fallthrough */
1185 r = -EINVAL;
1186 break;
1187 case OMAPFB_COLOR_RGB565:
1188 case OMAPFB_COLOR_RGB444:
1189 case OMAPFB_COLOR_RGB24P:
1190 case OMAPFB_COLOR_RGB24U:
1191 if (r != 0)
1192 break;
1193
1194 if (regno < 16) {
1195 u16 pal;
1196 pal = ((red >> (16 - var->red.length)) <<
1197 var->red.offset) |
1198 ((green >> (16 - var->green.length)) <<
1199 var->green.offset) |
1200 (blue >> (16 - var->blue.length));
1201 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1202 }
1203 break;
1204 default:
1205 BUG();
1206 }
1207 return r;
1208 }
1209
1210 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1211 u_int transp, struct fb_info *info)
1212 {
1213 DBG("setcolreg\n");
1214
1215 return _setcolreg(info, regno, red, green, blue, transp, 1);
1216 }
1217
1218 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1219 {
1220 int count, index, r;
1221 u16 *red, *green, *blue, *transp;
1222 u16 trans = 0xffff;
1223
1224 DBG("setcmap\n");
1225
1226 red = cmap->red;
1227 green = cmap->green;
1228 blue = cmap->blue;
1229 transp = cmap->transp;
1230 index = cmap->start;
1231
1232 for (count = 0; count < cmap->len; count++) {
1233 if (transp)
1234 trans = *transp++;
1235 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1236 count == cmap->len - 1);
1237 if (r != 0)
1238 return r;
1239 }
1240
1241 return 0;
1242 }
1243
1244 static int omapfb_blank(int blank, struct fb_info *fbi)
1245 {
1246 struct omapfb_info *ofbi = FB2OFB(fbi);
1247 struct omapfb2_device *fbdev = ofbi->fbdev;
1248 struct omap_dss_device *display = fb2display(fbi);
1249 struct omapfb_display_data *d;
1250 int r = 0;
1251
1252 if (!display)
1253 return -EINVAL;
1254
1255 omapfb_lock(fbdev);
1256
1257 d = get_display_data(fbdev, display);
1258
1259 switch (blank) {
1260 case FB_BLANK_UNBLANK:
1261 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1262 goto exit;
1263
1264 if (display->driver->resume)
1265 r = display->driver->resume(display);
1266
1267 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1268 d->update_mode == OMAPFB_AUTO_UPDATE &&
1269 !d->auto_update_work_enabled)
1270 omapfb_start_auto_update(fbdev, display);
1271
1272 break;
1273
1274 case FB_BLANK_NORMAL:
1275 /* FB_BLANK_NORMAL could be implemented.
1276 * Needs DSS additions. */
1277 case FB_BLANK_VSYNC_SUSPEND:
1278 case FB_BLANK_HSYNC_SUSPEND:
1279 case FB_BLANK_POWERDOWN:
1280 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1281 goto exit;
1282
1283 if (d->auto_update_work_enabled)
1284 omapfb_stop_auto_update(fbdev, display);
1285
1286 if (display->driver->suspend)
1287 r = display->driver->suspend(display);
1288
1289 break;
1290
1291 default:
1292 r = -EINVAL;
1293 }
1294
1295 exit:
1296 omapfb_unlock(fbdev);
1297
1298 return r;
1299 }
1300
1301 #if 0
1302 /* XXX fb_read and fb_write are needed for VRFB */
1303 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1304 size_t count, loff_t *ppos)
1305 {
1306 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1307 /* XXX needed for VRFB */
1308 return count;
1309 }
1310 #endif
1311
1312 static struct fb_ops omapfb_ops = {
1313 .owner = THIS_MODULE,
1314 .fb_open = omapfb_open,
1315 .fb_release = omapfb_release,
1316 .fb_fillrect = cfb_fillrect,
1317 .fb_copyarea = cfb_copyarea,
1318 .fb_imageblit = cfb_imageblit,
1319 .fb_blank = omapfb_blank,
1320 .fb_ioctl = omapfb_ioctl,
1321 .fb_check_var = omapfb_check_var,
1322 .fb_set_par = omapfb_set_par,
1323 .fb_pan_display = omapfb_pan_display,
1324 .fb_mmap = omapfb_mmap,
1325 .fb_setcolreg = omapfb_setcolreg,
1326 .fb_setcmap = omapfb_setcmap,
1327 /*.fb_write = omapfb_write,*/
1328 };
1329
1330 static void omapfb_free_fbmem(struct fb_info *fbi)
1331 {
1332 struct omapfb_info *ofbi = FB2OFB(fbi);
1333 struct omapfb2_device *fbdev = ofbi->fbdev;
1334 struct omapfb2_mem_region *rg;
1335
1336 rg = ofbi->region;
1337
1338 WARN_ON(atomic_read(&rg->map_count));
1339
1340 if (rg->paddr)
1341 if (omap_vram_free(rg->paddr, rg->size))
1342 dev_err(fbdev->dev, "VRAM FREE failed\n");
1343
1344 if (rg->vaddr)
1345 iounmap(rg->vaddr);
1346
1347 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1348 /* unmap the 0 angle rotation */
1349 if (rg->vrfb.vaddr[0]) {
1350 iounmap(rg->vrfb.vaddr[0]);
1351 omap_vrfb_release_ctx(&rg->vrfb);
1352 rg->vrfb.vaddr[0] = NULL;
1353 }
1354 }
1355
1356 rg->vaddr = NULL;
1357 rg->paddr = 0;
1358 rg->alloc = 0;
1359 rg->size = 0;
1360 }
1361
1362 static void clear_fb_info(struct fb_info *fbi)
1363 {
1364 memset(&fbi->var, 0, sizeof(fbi->var));
1365 memset(&fbi->fix, 0, sizeof(fbi->fix));
1366 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1367 }
1368
1369 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1370 {
1371 int i;
1372
1373 DBG("free all fbmem\n");
1374
1375 for (i = 0; i < fbdev->num_fbs; i++) {
1376 struct fb_info *fbi = fbdev->fbs[i];
1377 omapfb_free_fbmem(fbi);
1378 clear_fb_info(fbi);
1379 }
1380
1381 return 0;
1382 }
1383
1384 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1385 unsigned long paddr)
1386 {
1387 struct omapfb_info *ofbi = FB2OFB(fbi);
1388 struct omapfb2_device *fbdev = ofbi->fbdev;
1389 struct omapfb2_mem_region *rg;
1390 void __iomem *vaddr;
1391 int r;
1392
1393 rg = ofbi->region;
1394
1395 rg->paddr = 0;
1396 rg->vaddr = NULL;
1397 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1398 rg->size = 0;
1399 rg->type = 0;
1400 rg->alloc = false;
1401 rg->map = false;
1402
1403 size = PAGE_ALIGN(size);
1404
1405 if (!paddr) {
1406 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1407 r = omap_vram_alloc(size, &paddr);
1408 } else {
1409 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1410 ofbi->id);
1411 r = omap_vram_reserve(paddr, size);
1412 }
1413
1414 if (r) {
1415 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1416 return -ENOMEM;
1417 }
1418
1419 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1420 vaddr = ioremap_wc(paddr, size);
1421
1422 if (!vaddr) {
1423 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1424 omap_vram_free(paddr, size);
1425 return -ENOMEM;
1426 }
1427
1428 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1429 } else {
1430 r = omap_vrfb_request_ctx(&rg->vrfb);
1431 if (r) {
1432 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1433 return r;
1434 }
1435
1436 vaddr = NULL;
1437 }
1438
1439 rg->paddr = paddr;
1440 rg->vaddr = vaddr;
1441 rg->size = size;
1442 rg->alloc = 1;
1443
1444 return 0;
1445 }
1446
1447 /* allocate fbmem using display resolution as reference */
1448 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1449 unsigned long paddr)
1450 {
1451 struct omapfb_info *ofbi = FB2OFB(fbi);
1452 struct omapfb2_device *fbdev = ofbi->fbdev;
1453 struct omap_dss_device *display;
1454 int bytespp;
1455
1456 display = fb2display(fbi);
1457
1458 if (!display)
1459 return 0;
1460
1461 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1462 case 16:
1463 bytespp = 2;
1464 break;
1465 case 24:
1466 bytespp = 4;
1467 break;
1468 default:
1469 bytespp = 4;
1470 break;
1471 }
1472
1473 if (!size) {
1474 u16 w, h;
1475
1476 display->driver->get_resolution(display, &w, &h);
1477
1478 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1479 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1480 omap_vrfb_min_phys_size(h, w, bytespp));
1481
1482 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1483 w * h * bytespp, size);
1484 } else {
1485 size = w * h * bytespp;
1486 }
1487 }
1488
1489 if (!size)
1490 return 0;
1491
1492 return omapfb_alloc_fbmem(fbi, size, paddr);
1493 }
1494
1495 static int omapfb_parse_vram_param(const char *param, int max_entries,
1496 unsigned long *sizes, unsigned long *paddrs)
1497 {
1498 int fbnum;
1499 unsigned long size;
1500 unsigned long paddr = 0;
1501 char *p, *start;
1502
1503 start = (char *)param;
1504
1505 while (1) {
1506 p = start;
1507
1508 fbnum = simple_strtoul(p, &p, 10);
1509
1510 if (p == start)
1511 return -EINVAL;
1512
1513 if (*p != ':')
1514 return -EINVAL;
1515
1516 if (fbnum >= max_entries)
1517 return -EINVAL;
1518
1519 size = memparse(p + 1, &p);
1520
1521 if (!size)
1522 return -EINVAL;
1523
1524 paddr = 0;
1525
1526 if (*p == '@') {
1527 paddr = simple_strtoul(p + 1, &p, 16);
1528
1529 if (!paddr)
1530 return -EINVAL;
1531
1532 }
1533
1534 paddrs[fbnum] = paddr;
1535 sizes[fbnum] = size;
1536
1537 if (*p == 0)
1538 break;
1539
1540 if (*p != ',')
1541 return -EINVAL;
1542
1543 ++p;
1544
1545 start = p;
1546 }
1547
1548 return 0;
1549 }
1550
1551 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1552 {
1553 int i, r;
1554 unsigned long vram_sizes[10];
1555 unsigned long vram_paddrs[10];
1556
1557 memset(&vram_sizes, 0, sizeof(vram_sizes));
1558 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1559
1560 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1561 vram_sizes, vram_paddrs)) {
1562 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1563
1564 memset(&vram_sizes, 0, sizeof(vram_sizes));
1565 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1566 }
1567
1568 for (i = 0; i < fbdev->num_fbs; i++) {
1569 /* allocate memory automatically only for fb0, or if
1570 * excplicitly defined with vram or plat data option */
1571 if (i == 0 || vram_sizes[i] != 0) {
1572 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1573 vram_sizes[i], vram_paddrs[i]);
1574
1575 if (r)
1576 return r;
1577 }
1578 }
1579
1580 for (i = 0; i < fbdev->num_fbs; i++) {
1581 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1582 struct omapfb2_mem_region *rg;
1583 rg = ofbi->region;
1584
1585 DBG("region%d phys %08x virt %p size=%lu\n",
1586 i,
1587 rg->paddr,
1588 rg->vaddr,
1589 rg->size);
1590 }
1591
1592 return 0;
1593 }
1594
1595 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1596 {
1597 struct omapfb_info *ofbi = FB2OFB(fbi);
1598 struct omapfb2_device *fbdev = ofbi->fbdev;
1599 struct omap_dss_device *display = fb2display(fbi);
1600 struct omapfb2_mem_region *rg = ofbi->region;
1601 unsigned long old_size = rg->size;
1602 unsigned long old_paddr = rg->paddr;
1603 int old_type = rg->type;
1604 int r;
1605
1606 if (type != OMAPFB_MEMTYPE_SDRAM)
1607 return -EINVAL;
1608
1609 size = PAGE_ALIGN(size);
1610
1611 if (old_size == size && old_type == type)
1612 return 0;
1613
1614 if (display && display->driver->sync)
1615 display->driver->sync(display);
1616
1617 omapfb_free_fbmem(fbi);
1618
1619 if (size == 0) {
1620 clear_fb_info(fbi);
1621 return 0;
1622 }
1623
1624 r = omapfb_alloc_fbmem(fbi, size, 0);
1625
1626 if (r) {
1627 if (old_size)
1628 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1629
1630 if (rg->size == 0)
1631 clear_fb_info(fbi);
1632
1633 return r;
1634 }
1635
1636 if (old_size == size)
1637 return 0;
1638
1639 if (old_size == 0) {
1640 DBG("initializing fb %d\n", ofbi->id);
1641 r = omapfb_fb_init(fbdev, fbi);
1642 if (r) {
1643 DBG("omapfb_fb_init failed\n");
1644 goto err;
1645 }
1646 r = omapfb_apply_changes(fbi, 1);
1647 if (r) {
1648 DBG("omapfb_apply_changes failed\n");
1649 goto err;
1650 }
1651 } else {
1652 struct fb_var_screeninfo new_var;
1653 memcpy(&new_var, &fbi->var, sizeof(new_var));
1654 r = check_fb_var(fbi, &new_var);
1655 if (r)
1656 goto err;
1657 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1658 set_fb_fix(fbi);
1659 r = setup_vrfb_rotation(fbi);
1660 if (r)
1661 goto err;
1662 }
1663
1664 return 0;
1665 err:
1666 omapfb_free_fbmem(fbi);
1667 clear_fb_info(fbi);
1668 return r;
1669 }
1670
1671 static void omapfb_auto_update_work(struct work_struct *work)
1672 {
1673 struct omap_dss_device *dssdev;
1674 struct omap_dss_driver *dssdrv;
1675 struct omapfb_display_data *d;
1676 u16 w, h;
1677 unsigned int freq;
1678 struct omapfb2_device *fbdev;
1679
1680 d = container_of(work, struct omapfb_display_data,
1681 auto_update_work.work);
1682
1683 dssdev = d->dssdev;
1684 dssdrv = dssdev->driver;
1685 fbdev = d->fbdev;
1686
1687 if (!dssdrv || !dssdrv->update)
1688 return;
1689
1690 if (dssdrv->sync)
1691 dssdrv->sync(dssdev);
1692
1693 dssdrv->get_resolution(dssdev, &w, &h);
1694 dssdrv->update(dssdev, 0, 0, w, h);
1695
1696 freq = auto_update_freq;
1697 if (freq == 0)
1698 freq = 20;
1699 queue_delayed_work(fbdev->auto_update_wq,
1700 &d->auto_update_work, HZ / freq);
1701 }
1702
1703 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1704 struct omap_dss_device *display)
1705 {
1706 struct omapfb_display_data *d;
1707
1708 if (fbdev->auto_update_wq == NULL) {
1709 struct workqueue_struct *wq;
1710
1711 wq = create_singlethread_workqueue("omapfb_auto_update");
1712
1713 if (wq == NULL) {
1714 dev_err(fbdev->dev, "Failed to create workqueue for "
1715 "auto-update\n");
1716 return;
1717 }
1718
1719 fbdev->auto_update_wq = wq;
1720 }
1721
1722 d = get_display_data(fbdev, display);
1723
1724 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1725
1726 d->auto_update_work_enabled = true;
1727
1728 omapfb_auto_update_work(&d->auto_update_work.work);
1729 }
1730
1731 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1732 struct omap_dss_device *display)
1733 {
1734 struct omapfb_display_data *d;
1735
1736 d = get_display_data(fbdev, display);
1737
1738 cancel_delayed_work_sync(&d->auto_update_work);
1739
1740 d->auto_update_work_enabled = false;
1741 }
1742
1743 /* initialize fb_info, var, fix to something sane based on the display */
1744 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1745 {
1746 struct fb_var_screeninfo *var = &fbi->var;
1747 struct omap_dss_device *display = fb2display(fbi);
1748 struct omapfb_info *ofbi = FB2OFB(fbi);
1749 int r = 0;
1750
1751 fbi->fbops = &omapfb_ops;
1752 fbi->flags = FBINFO_FLAG_DEFAULT;
1753 fbi->pseudo_palette = fbdev->pseudo_palette;
1754
1755 if (ofbi->region->size == 0) {
1756 clear_fb_info(fbi);
1757 return 0;
1758 }
1759
1760 var->nonstd = 0;
1761 var->bits_per_pixel = 0;
1762
1763 var->rotate = def_rotate;
1764
1765 if (display) {
1766 u16 w, h;
1767 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1768
1769 display->driver->get_resolution(display, &w, &h);
1770
1771 if (rotation == FB_ROTATE_CW ||
1772 rotation == FB_ROTATE_CCW) {
1773 var->xres = h;
1774 var->yres = w;
1775 } else {
1776 var->xres = w;
1777 var->yres = h;
1778 }
1779
1780 var->xres_virtual = var->xres;
1781 var->yres_virtual = var->yres;
1782
1783 if (!var->bits_per_pixel) {
1784 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1785 case 16:
1786 var->bits_per_pixel = 16;
1787 break;
1788 case 24:
1789 var->bits_per_pixel = 32;
1790 break;
1791 default:
1792 dev_err(fbdev->dev, "illegal display "
1793 "bpp\n");
1794 return -EINVAL;
1795 }
1796 }
1797 } else {
1798 /* if there's no display, let's just guess some basic values */
1799 var->xres = 320;
1800 var->yres = 240;
1801 var->xres_virtual = var->xres;
1802 var->yres_virtual = var->yres;
1803 if (!var->bits_per_pixel)
1804 var->bits_per_pixel = 16;
1805 }
1806
1807 r = check_fb_var(fbi, var);
1808 if (r)
1809 goto err;
1810
1811 set_fb_fix(fbi);
1812 r = setup_vrfb_rotation(fbi);
1813 if (r)
1814 goto err;
1815
1816 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1817 if (r)
1818 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1819
1820 err:
1821 return r;
1822 }
1823
1824 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1825 {
1826 fb_dealloc_cmap(&fbi->cmap);
1827 }
1828
1829
1830 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1831 {
1832 int i;
1833
1834 DBG("free_resources\n");
1835
1836 if (fbdev == NULL)
1837 return;
1838
1839 for (i = 0; i < fbdev->num_fbs; i++)
1840 unregister_framebuffer(fbdev->fbs[i]);
1841
1842 /* free the reserved fbmem */
1843 omapfb_free_all_fbmem(fbdev);
1844
1845 for (i = 0; i < fbdev->num_fbs; i++) {
1846 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1847 framebuffer_release(fbdev->fbs[i]);
1848 }
1849
1850 for (i = 0; i < fbdev->num_displays; i++) {
1851 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1852
1853 if (fbdev->displays[i].auto_update_work_enabled)
1854 omapfb_stop_auto_update(fbdev, dssdev);
1855
1856 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1857 dssdev->driver->disable(dssdev);
1858
1859 omap_dss_put_device(dssdev);
1860 }
1861
1862 if (fbdev->auto_update_wq != NULL) {
1863 flush_workqueue(fbdev->auto_update_wq);
1864 destroy_workqueue(fbdev->auto_update_wq);
1865 fbdev->auto_update_wq = NULL;
1866 }
1867
1868 dev_set_drvdata(fbdev->dev, NULL);
1869 kfree(fbdev);
1870 }
1871
1872 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1873 {
1874 int r, i;
1875
1876 fbdev->num_fbs = 0;
1877
1878 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1879
1880 /* allocate fb_infos */
1881 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1882 struct fb_info *fbi;
1883 struct omapfb_info *ofbi;
1884
1885 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1886 fbdev->dev);
1887
1888 if (fbi == NULL) {
1889 dev_err(fbdev->dev,
1890 "unable to allocate memory for plane info\n");
1891 return -ENOMEM;
1892 }
1893
1894 clear_fb_info(fbi);
1895
1896 fbdev->fbs[i] = fbi;
1897
1898 ofbi = FB2OFB(fbi);
1899 ofbi->fbdev = fbdev;
1900 ofbi->id = i;
1901
1902 ofbi->region = &fbdev->regions[i];
1903 ofbi->region->id = i;
1904 init_rwsem(&ofbi->region->lock);
1905
1906 /* assign these early, so that fb alloc can use them */
1907 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1908 OMAP_DSS_ROT_DMA;
1909 ofbi->mirror = def_mirror;
1910
1911 fbdev->num_fbs++;
1912 }
1913
1914 DBG("fb_infos allocated\n");
1915
1916 /* assign overlays for the fbs */
1917 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1918 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1919
1920 ofbi->overlays[0] = fbdev->overlays[i];
1921 ofbi->num_overlays = 1;
1922 }
1923
1924 /* allocate fb memories */
1925 r = omapfb_allocate_all_fbs(fbdev);
1926 if (r) {
1927 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1928 return r;
1929 }
1930
1931 DBG("fbmems allocated\n");
1932
1933 /* setup fb_infos */
1934 for (i = 0; i < fbdev->num_fbs; i++) {
1935 struct fb_info *fbi = fbdev->fbs[i];
1936 struct omapfb_info *ofbi = FB2OFB(fbi);
1937
1938 omapfb_get_mem_region(ofbi->region);
1939 r = omapfb_fb_init(fbdev, fbi);
1940 omapfb_put_mem_region(ofbi->region);
1941
1942 if (r) {
1943 dev_err(fbdev->dev, "failed to setup fb_info\n");
1944 return r;
1945 }
1946 }
1947
1948 DBG("fb_infos initialized\n");
1949
1950 for (i = 0; i < fbdev->num_fbs; i++) {
1951 r = register_framebuffer(fbdev->fbs[i]);
1952 if (r != 0) {
1953 dev_err(fbdev->dev,
1954 "registering framebuffer %d failed\n", i);
1955 return r;
1956 }
1957 }
1958
1959 DBG("framebuffers registered\n");
1960
1961 for (i = 0; i < fbdev->num_fbs; i++) {
1962 struct fb_info *fbi = fbdev->fbs[i];
1963 struct omapfb_info *ofbi = FB2OFB(fbi);
1964
1965 omapfb_get_mem_region(ofbi->region);
1966 r = omapfb_apply_changes(fbi, 1);
1967 omapfb_put_mem_region(ofbi->region);
1968
1969 if (r) {
1970 dev_err(fbdev->dev, "failed to change mode\n");
1971 return r;
1972 }
1973 }
1974
1975 /* Enable fb0 */
1976 if (fbdev->num_fbs > 0) {
1977 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1978
1979 if (ofbi->num_overlays > 0) {
1980 struct omap_overlay *ovl = ofbi->overlays[0];
1981
1982 ovl->manager->apply(ovl->manager);
1983
1984 r = omapfb_overlay_enable(ovl, 1);
1985
1986 if (r) {
1987 dev_err(fbdev->dev,
1988 "failed to enable overlay\n");
1989 return r;
1990 }
1991 }
1992 }
1993
1994 DBG("create_framebuffers done\n");
1995
1996 return 0;
1997 }
1998
1999 static int omapfb_mode_to_timings(const char *mode_str,
2000 struct omap_dss_device *display,
2001 struct omap_video_timings *timings, u8 *bpp)
2002 {
2003 struct fb_info *fbi;
2004 struct fb_var_screeninfo *var;
2005 struct fb_ops *fbops;
2006 int r;
2007
2008 #ifdef CONFIG_OMAP2_DSS_VENC
2009 if (strcmp(mode_str, "pal") == 0) {
2010 *timings = omap_dss_pal_timings;
2011 *bpp = 24;
2012 return 0;
2013 } else if (strcmp(mode_str, "ntsc") == 0) {
2014 *timings = omap_dss_ntsc_timings;
2015 *bpp = 24;
2016 return 0;
2017 }
2018 #endif
2019
2020 /* this is quite a hack, but I wanted to use the modedb and for
2021 * that we need fb_info and var, so we create dummy ones */
2022
2023 *bpp = 0;
2024 fbi = NULL;
2025 var = NULL;
2026 fbops = NULL;
2027
2028 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2029 if (fbi == NULL) {
2030 r = -ENOMEM;
2031 goto err;
2032 }
2033
2034 var = kzalloc(sizeof(*var), GFP_KERNEL);
2035 if (var == NULL) {
2036 r = -ENOMEM;
2037 goto err;
2038 }
2039
2040 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2041 if (fbops == NULL) {
2042 r = -ENOMEM;
2043 goto err;
2044 }
2045
2046 fbi->fbops = fbops;
2047
2048 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2049 if (r == 0) {
2050 r = -EINVAL;
2051 goto err;
2052 }
2053
2054 if (display->driver->get_timings) {
2055 display->driver->get_timings(display, timings);
2056 } else {
2057 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2058 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2059 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2060 }
2061
2062 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2063 timings->hbp = var->left_margin;
2064 timings->hfp = var->right_margin;
2065 timings->vbp = var->upper_margin;
2066 timings->vfp = var->lower_margin;
2067 timings->hsw = var->hsync_len;
2068 timings->vsw = var->vsync_len;
2069 timings->x_res = var->xres;
2070 timings->y_res = var->yres;
2071 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2072 OMAPDSS_SIG_ACTIVE_HIGH :
2073 OMAPDSS_SIG_ACTIVE_LOW;
2074 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2075 OMAPDSS_SIG_ACTIVE_HIGH :
2076 OMAPDSS_SIG_ACTIVE_LOW;
2077 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2078
2079 switch (var->bits_per_pixel) {
2080 case 16:
2081 *bpp = 16;
2082 break;
2083 case 24:
2084 case 32:
2085 default:
2086 *bpp = 24;
2087 break;
2088 }
2089
2090 r = 0;
2091
2092 err:
2093 kfree(fbi);
2094 kfree(var);
2095 kfree(fbops);
2096
2097 return r;
2098 }
2099
2100 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2101 struct omap_dss_device *display, char *mode_str)
2102 {
2103 int r;
2104 u8 bpp;
2105 struct omap_video_timings timings, temp_timings;
2106 struct omapfb_display_data *d;
2107
2108 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2109 if (r)
2110 return r;
2111
2112 d = get_display_data(fbdev, display);
2113 d->bpp_override = bpp;
2114
2115 if (display->driver->check_timings) {
2116 r = display->driver->check_timings(display, &timings);
2117 if (r)
2118 return r;
2119 } else {
2120 /* If check_timings is not present compare xres and yres */
2121 if (display->driver->get_timings) {
2122 display->driver->get_timings(display, &temp_timings);
2123
2124 if (temp_timings.x_res != timings.x_res ||
2125 temp_timings.y_res != timings.y_res)
2126 return -EINVAL;
2127 }
2128 }
2129
2130 if (display->driver->set_timings)
2131 display->driver->set_timings(display, &timings);
2132
2133 return 0;
2134 }
2135
2136 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2137 struct omap_dss_device *dssdev)
2138 {
2139 struct omapfb_display_data *d;
2140
2141 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2142
2143 d = get_display_data(fbdev, dssdev);
2144
2145 if (d->bpp_override != 0)
2146 return d->bpp_override;
2147
2148 return dssdev->driver->get_recommended_bpp(dssdev);
2149 }
2150
2151 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2152 {
2153 char *str, *options, *this_opt;
2154 int r = 0;
2155
2156 str = kstrdup(def_mode, GFP_KERNEL);
2157 if (!str)
2158 return -ENOMEM;
2159 options = str;
2160
2161 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2162 char *p, *display_str, *mode_str;
2163 struct omap_dss_device *display;
2164 int i;
2165
2166 p = strchr(this_opt, ':');
2167 if (!p) {
2168 r = -EINVAL;
2169 break;
2170 }
2171
2172 *p = 0;
2173 display_str = this_opt;
2174 mode_str = p + 1;
2175
2176 display = NULL;
2177 for (i = 0; i < fbdev->num_displays; ++i) {
2178 if (strcmp(fbdev->displays[i].dssdev->name,
2179 display_str) == 0) {
2180 display = fbdev->displays[i].dssdev;
2181 break;
2182 }
2183 }
2184
2185 if (!display) {
2186 r = -EINVAL;
2187 break;
2188 }
2189
2190 r = omapfb_set_def_mode(fbdev, display, mode_str);
2191 if (r)
2192 break;
2193 }
2194
2195 kfree(str);
2196
2197 return r;
2198 }
2199
2200 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2201 struct omap_dss_device *display,
2202 struct omap_video_timings *t)
2203 {
2204 if (display->driver->get_timings) {
2205 display->driver->get_timings(display, t);
2206 } else {
2207 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2208 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2209 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2210 }
2211
2212 t->x_res = m->xres;
2213 t->y_res = m->yres;
2214 t->pixel_clock = PICOS2KHZ(m->pixclock);
2215 t->hsw = m->hsync_len;
2216 t->hfp = m->right_margin;
2217 t->hbp = m->left_margin;
2218 t->vsw = m->vsync_len;
2219 t->vfp = m->lower_margin;
2220 t->vbp = m->upper_margin;
2221 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2222 OMAPDSS_SIG_ACTIVE_HIGH :
2223 OMAPDSS_SIG_ACTIVE_LOW;
2224 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2225 OMAPDSS_SIG_ACTIVE_HIGH :
2226 OMAPDSS_SIG_ACTIVE_LOW;
2227 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2228 }
2229
2230 static int omapfb_find_best_mode(struct omap_dss_device *display,
2231 struct omap_video_timings *timings)
2232 {
2233 struct fb_monspecs *specs;
2234 u8 *edid;
2235 int r, i, best_xres, best_idx, len;
2236
2237 if (!display->driver->read_edid)
2238 return -ENODEV;
2239
2240 len = 0x80 * 2;
2241 edid = kmalloc(len, GFP_KERNEL);
2242
2243 r = display->driver->read_edid(display, edid, len);
2244 if (r < 0)
2245 goto err1;
2246
2247 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2248
2249 fb_edid_to_monspecs(edid, specs);
2250
2251 if (edid[126] > 0)
2252 fb_edid_add_monspecs(edid + 0x80, specs);
2253
2254 best_xres = 0;
2255 best_idx = -1;
2256
2257 for (i = 0; i < specs->modedb_len; ++i) {
2258 struct fb_videomode *m;
2259 struct omap_video_timings t;
2260
2261 m = &specs->modedb[i];
2262
2263 if (m->pixclock == 0)
2264 continue;
2265
2266 /* skip repeated pixel modes */
2267 if (m->xres == 2880 || m->xres == 1440)
2268 continue;
2269
2270 fb_videomode_to_omap_timings(m, display, &t);
2271
2272 r = display->driver->check_timings(display, &t);
2273 if (r == 0 && best_xres < m->xres) {
2274 best_xres = m->xres;
2275 best_idx = i;
2276 }
2277 }
2278
2279 if (best_xres == 0) {
2280 r = -ENOENT;
2281 goto err2;
2282 }
2283
2284 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2285 timings);
2286
2287 r = 0;
2288
2289 err2:
2290 fb_destroy_modedb(specs->modedb);
2291 kfree(specs);
2292 err1:
2293 kfree(edid);
2294
2295 return r;
2296 }
2297
2298 static int omapfb_init_display(struct omapfb2_device *fbdev,
2299 struct omap_dss_device *dssdev)
2300 {
2301 struct omap_dss_driver *dssdrv = dssdev->driver;
2302 struct omapfb_display_data *d;
2303 int r;
2304
2305 r = dssdrv->enable(dssdev);
2306 if (r) {
2307 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2308 dssdev->name);
2309 return r;
2310 }
2311
2312 d = get_display_data(fbdev, dssdev);
2313
2314 d->fbdev = fbdev;
2315
2316 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2317 u16 w, h;
2318
2319 if (auto_update) {
2320 omapfb_start_auto_update(fbdev, dssdev);
2321 d->update_mode = OMAPFB_AUTO_UPDATE;
2322 } else {
2323 d->update_mode = OMAPFB_MANUAL_UPDATE;
2324 }
2325
2326 if (dssdrv->enable_te) {
2327 r = dssdrv->enable_te(dssdev, 1);
2328 if (r) {
2329 dev_err(fbdev->dev, "Failed to set TE\n");
2330 return r;
2331 }
2332 }
2333
2334 dssdrv->get_resolution(dssdev, &w, &h);
2335 r = dssdrv->update(dssdev, 0, 0, w, h);
2336 if (r) {
2337 dev_err(fbdev->dev,
2338 "Failed to update display\n");
2339 return r;
2340 }
2341 } else {
2342 d->update_mode = OMAPFB_AUTO_UPDATE;
2343 }
2344
2345 return 0;
2346 }
2347
2348 static int __init omapfb_probe(struct platform_device *pdev)
2349 {
2350 struct omapfb2_device *fbdev = NULL;
2351 int r = 0;
2352 int i;
2353 struct omap_overlay *ovl;
2354 struct omap_dss_device *def_display;
2355 struct omap_dss_device *dssdev;
2356
2357 DBG("omapfb_probe\n");
2358
2359 if (pdev->num_resources != 0) {
2360 dev_err(&pdev->dev, "probed for an unknown device\n");
2361 r = -ENODEV;
2362 goto err0;
2363 }
2364
2365 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2366 if (fbdev == NULL) {
2367 r = -ENOMEM;
2368 goto err0;
2369 }
2370
2371 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2372 * available for OMAP2 and OMAP3
2373 */
2374 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2375 def_vrfb = 0;
2376 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2377 "ignoring the module parameter vrfb=y\n");
2378 }
2379
2380
2381 mutex_init(&fbdev->mtx);
2382
2383 fbdev->dev = &pdev->dev;
2384 platform_set_drvdata(pdev, fbdev);
2385
2386 r = 0;
2387 fbdev->num_displays = 0;
2388 dssdev = NULL;
2389 for_each_dss_dev(dssdev) {
2390 struct omapfb_display_data *d;
2391
2392 omap_dss_get_device(dssdev);
2393
2394 if (!dssdev->driver) {
2395 dev_warn(&pdev->dev, "no driver for display: %s\n",
2396 dssdev->name);
2397 omap_dss_put_device(dssdev);
2398 continue;
2399 }
2400
2401 d = &fbdev->displays[fbdev->num_displays++];
2402 d->dssdev = dssdev;
2403 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2404 d->update_mode = OMAPFB_MANUAL_UPDATE;
2405 else
2406 d->update_mode = OMAPFB_AUTO_UPDATE;
2407 }
2408
2409 if (r)
2410 goto cleanup;
2411
2412 if (fbdev->num_displays == 0) {
2413 dev_err(&pdev->dev, "no displays\n");
2414 r = -EINVAL;
2415 goto cleanup;
2416 }
2417
2418 fbdev->num_overlays = omap_dss_get_num_overlays();
2419 for (i = 0; i < fbdev->num_overlays; i++)
2420 fbdev->overlays[i] = omap_dss_get_overlay(i);
2421
2422 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2423 for (i = 0; i < fbdev->num_managers; i++)
2424 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2425
2426 /* gfx overlay should be the default one. find a display
2427 * connected to that, and use it as default display */
2428 ovl = omap_dss_get_overlay(0);
2429 if (ovl->manager && ovl->manager->device) {
2430 def_display = ovl->manager->device;
2431 } else {
2432 dev_warn(&pdev->dev, "cannot find default display\n");
2433 def_display = NULL;
2434 }
2435
2436 if (def_mode && strlen(def_mode) > 0) {
2437 if (omapfb_parse_def_modes(fbdev))
2438 dev_warn(&pdev->dev, "cannot parse default modes\n");
2439 } else if (def_display && def_display->driver->set_timings &&
2440 def_display->driver->check_timings) {
2441 struct omap_video_timings t;
2442
2443 r = omapfb_find_best_mode(def_display, &t);
2444
2445 if (r == 0)
2446 def_display->driver->set_timings(def_display, &t);
2447 }
2448
2449 r = omapfb_create_framebuffers(fbdev);
2450 if (r)
2451 goto cleanup;
2452
2453 for (i = 0; i < fbdev->num_managers; i++) {
2454 struct omap_overlay_manager *mgr;
2455 mgr = fbdev->managers[i];
2456 r = mgr->apply(mgr);
2457 if (r)
2458 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2459 }
2460
2461 DBG("mgr->apply'ed\n");
2462
2463 if (def_display) {
2464 r = omapfb_init_display(fbdev, def_display);
2465 if (r) {
2466 dev_err(fbdev->dev,
2467 "failed to initialize default "
2468 "display\n");
2469 goto cleanup;
2470 }
2471 }
2472
2473 DBG("create sysfs for fbs\n");
2474 r = omapfb_create_sysfs(fbdev);
2475 if (r) {
2476 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2477 goto cleanup;
2478 }
2479
2480 return 0;
2481
2482 cleanup:
2483 omapfb_free_resources(fbdev);
2484 err0:
2485 dev_err(&pdev->dev, "failed to setup omapfb\n");
2486 return r;
2487 }
2488
2489 static int __exit omapfb_remove(struct platform_device *pdev)
2490 {
2491 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2492
2493 /* FIXME: wait till completion of pending events */
2494
2495 omapfb_remove_sysfs(fbdev);
2496
2497 omapfb_free_resources(fbdev);
2498
2499 return 0;
2500 }
2501
2502 static struct platform_driver omapfb_driver = {
2503 .remove = __exit_p(omapfb_remove),
2504 .driver = {
2505 .name = "omapfb",
2506 .owner = THIS_MODULE,
2507 },
2508 };
2509
2510 static int __init omapfb_init(void)
2511 {
2512 DBG("omapfb_init\n");
2513
2514 if (platform_driver_probe(&omapfb_driver, omapfb_probe)) {
2515 printk(KERN_ERR "failed to register omapfb driver\n");
2516 return -ENODEV;
2517 }
2518
2519 return 0;
2520 }
2521
2522 static void __exit omapfb_exit(void)
2523 {
2524 DBG("omapfb_exit\n");
2525 platform_driver_unregister(&omapfb_driver);
2526 }
2527
2528 module_param_named(mode, def_mode, charp, 0);
2529 module_param_named(vram, def_vram, charp, 0);
2530 module_param_named(rotate, def_rotate, int, 0);
2531 module_param_named(vrfb, def_vrfb, bool, 0);
2532 module_param_named(mirror, def_mirror, bool, 0);
2533
2534 /* late_initcall to let panel/ctrl drivers loaded first.
2535 * I guess better option would be a more dynamic approach,
2536 * so that omapfb reacts to new panels when they are loaded */
2537 late_initcall(omapfb_init);
2538 /*module_init(omapfb_init);*/
2539 module_exit(omapfb_exit);
2540
2541 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2542 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2543 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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