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module_param: make bool parameters really bool (drivers & misc)
[mirror_ubuntu-hirsute-kernel.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 }
183
184 offset *= vrfb->bytespp;
185
186 return offset;
187 }
188
189 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
190 {
191 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
192 return ofbi->region->vrfb.paddr[rot]
193 + omapfb_get_vrfb_offset(ofbi, rot);
194 } else {
195 return ofbi->region->paddr;
196 }
197 }
198
199 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
200 {
201 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
202 return ofbi->region->vrfb.paddr[0];
203 else
204 return ofbi->region->paddr;
205 }
206
207 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
208 {
209 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
210 return ofbi->region->vrfb.vaddr[0];
211 else
212 return ofbi->region->vaddr;
213 }
214
215 static struct omapfb_colormode omapfb_colormodes[] = {
216 {
217 .dssmode = OMAP_DSS_COLOR_UYVY,
218 .bits_per_pixel = 16,
219 .nonstd = OMAPFB_COLOR_YUV422,
220 }, {
221 .dssmode = OMAP_DSS_COLOR_YUV2,
222 .bits_per_pixel = 16,
223 .nonstd = OMAPFB_COLOR_YUY422,
224 }, {
225 .dssmode = OMAP_DSS_COLOR_ARGB16,
226 .bits_per_pixel = 16,
227 .red = { .length = 4, .offset = 8, .msb_right = 0 },
228 .green = { .length = 4, .offset = 4, .msb_right = 0 },
229 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
230 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
231 }, {
232 .dssmode = OMAP_DSS_COLOR_RGB16,
233 .bits_per_pixel = 16,
234 .red = { .length = 5, .offset = 11, .msb_right = 0 },
235 .green = { .length = 6, .offset = 5, .msb_right = 0 },
236 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
237 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
238 }, {
239 .dssmode = OMAP_DSS_COLOR_RGB24P,
240 .bits_per_pixel = 24,
241 .red = { .length = 8, .offset = 16, .msb_right = 0 },
242 .green = { .length = 8, .offset = 8, .msb_right = 0 },
243 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
244 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
245 }, {
246 .dssmode = OMAP_DSS_COLOR_RGB24U,
247 .bits_per_pixel = 32,
248 .red = { .length = 8, .offset = 16, .msb_right = 0 },
249 .green = { .length = 8, .offset = 8, .msb_right = 0 },
250 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
251 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
252 }, {
253 .dssmode = OMAP_DSS_COLOR_ARGB32,
254 .bits_per_pixel = 32,
255 .red = { .length = 8, .offset = 16, .msb_right = 0 },
256 .green = { .length = 8, .offset = 8, .msb_right = 0 },
257 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
258 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
259 }, {
260 .dssmode = OMAP_DSS_COLOR_RGBA32,
261 .bits_per_pixel = 32,
262 .red = { .length = 8, .offset = 24, .msb_right = 0 },
263 .green = { .length = 8, .offset = 16, .msb_right = 0 },
264 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
265 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
266 }, {
267 .dssmode = OMAP_DSS_COLOR_RGBX32,
268 .bits_per_pixel = 32,
269 .red = { .length = 8, .offset = 24, .msb_right = 0 },
270 .green = { .length = 8, .offset = 16, .msb_right = 0 },
271 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
272 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
273 },
274 };
275
276 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
277 struct omapfb_colormode *color)
278 {
279 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
280 {
281 return f1->length == f2->length &&
282 f1->offset == f2->offset &&
283 f1->msb_right == f2->msb_right;
284 }
285
286 if (var->bits_per_pixel == 0 ||
287 var->red.length == 0 ||
288 var->blue.length == 0 ||
289 var->green.length == 0)
290 return 0;
291
292 return var->bits_per_pixel == color->bits_per_pixel &&
293 cmp_component(&var->red, &color->red) &&
294 cmp_component(&var->green, &color->green) &&
295 cmp_component(&var->blue, &color->blue) &&
296 cmp_component(&var->transp, &color->transp);
297 }
298
299 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
300 struct omapfb_colormode *color)
301 {
302 var->bits_per_pixel = color->bits_per_pixel;
303 var->nonstd = color->nonstd;
304 var->red = color->red;
305 var->green = color->green;
306 var->blue = color->blue;
307 var->transp = color->transp;
308 }
309
310 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
311 enum omap_color_mode *mode)
312 {
313 enum omap_color_mode dssmode;
314 int i;
315
316 /* first match with nonstd field */
317 if (var->nonstd) {
318 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
319 struct omapfb_colormode *m = &omapfb_colormodes[i];
320 if (var->nonstd == m->nonstd) {
321 assign_colormode_to_var(var, m);
322 *mode = m->dssmode;
323 return 0;
324 }
325 }
326
327 return -EINVAL;
328 }
329
330 /* then try exact match of bpp and colors */
331 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
332 struct omapfb_colormode *m = &omapfb_colormodes[i];
333 if (cmp_var_to_colormode(var, m)) {
334 assign_colormode_to_var(var, m);
335 *mode = m->dssmode;
336 return 0;
337 }
338 }
339
340 /* match with bpp if user has not filled color fields
341 * properly */
342 switch (var->bits_per_pixel) {
343 case 1:
344 dssmode = OMAP_DSS_COLOR_CLUT1;
345 break;
346 case 2:
347 dssmode = OMAP_DSS_COLOR_CLUT2;
348 break;
349 case 4:
350 dssmode = OMAP_DSS_COLOR_CLUT4;
351 break;
352 case 8:
353 dssmode = OMAP_DSS_COLOR_CLUT8;
354 break;
355 case 12:
356 dssmode = OMAP_DSS_COLOR_RGB12U;
357 break;
358 case 16:
359 dssmode = OMAP_DSS_COLOR_RGB16;
360 break;
361 case 24:
362 dssmode = OMAP_DSS_COLOR_RGB24P;
363 break;
364 case 32:
365 dssmode = OMAP_DSS_COLOR_RGB24U;
366 break;
367 default:
368 return -EINVAL;
369 }
370
371 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
372 struct omapfb_colormode *m = &omapfb_colormodes[i];
373 if (dssmode == m->dssmode) {
374 assign_colormode_to_var(var, m);
375 *mode = m->dssmode;
376 return 0;
377 }
378 }
379
380 return -EINVAL;
381 }
382
383 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
384 {
385 int xres_min = OMAPFB_PLANE_XRES_MIN;
386 int xres_max = 2048;
387 int yres_min = OMAPFB_PLANE_YRES_MIN;
388 int yres_max = 2048;
389
390 /* XXX: some applications seem to set virtual res to 0. */
391 if (var->xres_virtual == 0)
392 var->xres_virtual = var->xres;
393
394 if (var->yres_virtual == 0)
395 var->yres_virtual = var->yres;
396
397 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
398 return -EINVAL;
399
400 if (var->xres < xres_min)
401 var->xres = xres_min;
402 if (var->yres < yres_min)
403 var->yres = yres_min;
404 if (var->xres > xres_max)
405 var->xres = xres_max;
406 if (var->yres > yres_max)
407 var->yres = yres_max;
408
409 if (var->xres > var->xres_virtual)
410 var->xres = var->xres_virtual;
411 if (var->yres > var->yres_virtual)
412 var->yres = var->yres_virtual;
413
414 return 0;
415 }
416
417 static void shrink_height(unsigned long max_frame_size,
418 struct fb_var_screeninfo *var)
419 {
420 DBG("can't fit FB into memory, reducing y\n");
421 var->yres_virtual = max_frame_size /
422 (var->xres_virtual * var->bits_per_pixel >> 3);
423
424 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
425 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
426
427 if (var->yres > var->yres_virtual)
428 var->yres = var->yres_virtual;
429 }
430
431 static void shrink_width(unsigned long max_frame_size,
432 struct fb_var_screeninfo *var)
433 {
434 DBG("can't fit FB into memory, reducing x\n");
435 var->xres_virtual = max_frame_size / var->yres_virtual /
436 (var->bits_per_pixel >> 3);
437
438 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
439 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
440
441 if (var->xres > var->xres_virtual)
442 var->xres = var->xres_virtual;
443 }
444
445 static int check_vrfb_fb_size(unsigned long region_size,
446 const struct fb_var_screeninfo *var)
447 {
448 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
449 var->yres_virtual, var->bits_per_pixel >> 3);
450
451 return min_phys_size > region_size ? -EINVAL : 0;
452 }
453
454 static int check_fb_size(const struct omapfb_info *ofbi,
455 struct fb_var_screeninfo *var)
456 {
457 unsigned long max_frame_size = ofbi->region->size;
458 int bytespp = var->bits_per_pixel >> 3;
459 unsigned long line_size = var->xres_virtual * bytespp;
460
461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
462 /* One needs to check for both VRFB and OMAPFB limitations. */
463 if (check_vrfb_fb_size(max_frame_size, var))
464 shrink_height(omap_vrfb_max_height(
465 max_frame_size, var->xres_virtual, bytespp) *
466 line_size, var);
467
468 if (check_vrfb_fb_size(max_frame_size, var)) {
469 DBG("cannot fit FB to memory\n");
470 return -EINVAL;
471 }
472
473 return 0;
474 }
475
476 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
477
478 if (line_size * var->yres_virtual > max_frame_size)
479 shrink_height(max_frame_size, var);
480
481 if (line_size * var->yres_virtual > max_frame_size) {
482 shrink_width(max_frame_size, var);
483 line_size = var->xres_virtual * bytespp;
484 }
485
486 if (line_size * var->yres_virtual > max_frame_size) {
487 DBG("cannot fit FB to memory\n");
488 return -EINVAL;
489 }
490
491 return 0;
492 }
493
494 /*
495 * Consider if VRFB assisted rotation is in use and if the virtual space for
496 * the zero degree view needs to be mapped. The need for mapping also acts as
497 * the trigger for setting up the hardware on the context in question. This
498 * ensures that one does not attempt to access the virtual view before the
499 * hardware is serving the address translations.
500 */
501 static int setup_vrfb_rotation(struct fb_info *fbi)
502 {
503 struct omapfb_info *ofbi = FB2OFB(fbi);
504 struct omapfb2_mem_region *rg = ofbi->region;
505 struct vrfb *vrfb = &rg->vrfb;
506 struct fb_var_screeninfo *var = &fbi->var;
507 struct fb_fix_screeninfo *fix = &fbi->fix;
508 unsigned bytespp;
509 bool yuv_mode;
510 enum omap_color_mode mode;
511 int r;
512 bool reconf;
513
514 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
515 return 0;
516
517 DBG("setup_vrfb_rotation\n");
518
519 r = fb_mode_to_dss_mode(var, &mode);
520 if (r)
521 return r;
522
523 bytespp = var->bits_per_pixel >> 3;
524
525 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
526
527 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
528 * is enabled/disabled, or if bytes per pixel changes */
529
530 /* XXX we shouldn't allow this when framebuffer is mmapped */
531
532 reconf = false;
533
534 if (yuv_mode != vrfb->yuv_mode)
535 reconf = true;
536 else if (bytespp != vrfb->bytespp)
537 reconf = true;
538 else if (vrfb->xres != var->xres_virtual ||
539 vrfb->yres != var->yres_virtual)
540 reconf = true;
541
542 if (vrfb->vaddr[0] && reconf) {
543 fbi->screen_base = NULL;
544 fix->smem_start = 0;
545 fix->smem_len = 0;
546 iounmap(vrfb->vaddr[0]);
547 vrfb->vaddr[0] = NULL;
548 DBG("setup_vrfb_rotation: reset fb\n");
549 }
550
551 if (vrfb->vaddr[0])
552 return 0;
553
554 omap_vrfb_setup(&rg->vrfb, rg->paddr,
555 var->xres_virtual,
556 var->yres_virtual,
557 bytespp, yuv_mode);
558
559 /* Now one can ioremap the 0 angle view */
560 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
561 if (r)
562 return r;
563
564 /* used by open/write in fbmem.c */
565 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
566
567 fix->smem_start = ofbi->region->vrfb.paddr[0];
568
569 switch (var->nonstd) {
570 case OMAPFB_COLOR_YUV422:
571 case OMAPFB_COLOR_YUY422:
572 fix->line_length =
573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
574 break;
575 default:
576 fix->line_length =
577 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
578 break;
579 }
580
581 fix->smem_len = var->yres_virtual * fix->line_length;
582
583 return 0;
584 }
585
586 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
587 struct fb_var_screeninfo *var)
588 {
589 int i;
590
591 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
592 struct omapfb_colormode *mode = &omapfb_colormodes[i];
593 if (dssmode == mode->dssmode) {
594 assign_colormode_to_var(var, mode);
595 return 0;
596 }
597 }
598 return -ENOENT;
599 }
600
601 void set_fb_fix(struct fb_info *fbi)
602 {
603 struct fb_fix_screeninfo *fix = &fbi->fix;
604 struct fb_var_screeninfo *var = &fbi->var;
605 struct omapfb_info *ofbi = FB2OFB(fbi);
606 struct omapfb2_mem_region *rg = ofbi->region;
607
608 DBG("set_fb_fix\n");
609
610 /* used by open/write in fbmem.c */
611 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
612
613 /* used by mmap in fbmem.c */
614 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
615 switch (var->nonstd) {
616 case OMAPFB_COLOR_YUV422:
617 case OMAPFB_COLOR_YUY422:
618 fix->line_length =
619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
620 break;
621 default:
622 fix->line_length =
623 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
624 break;
625 }
626
627 fix->smem_len = var->yres_virtual * fix->line_length;
628 } else {
629 fix->line_length =
630 (var->xres_virtual * var->bits_per_pixel) >> 3;
631 fix->smem_len = rg->size;
632 }
633
634 fix->smem_start = omapfb_get_region_paddr(ofbi);
635
636 fix->type = FB_TYPE_PACKED_PIXELS;
637
638 if (var->nonstd)
639 fix->visual = FB_VISUAL_PSEUDOCOLOR;
640 else {
641 switch (var->bits_per_pixel) {
642 case 32:
643 case 24:
644 case 16:
645 case 12:
646 fix->visual = FB_VISUAL_TRUECOLOR;
647 /* 12bpp is stored in 16 bits */
648 break;
649 case 1:
650 case 2:
651 case 4:
652 case 8:
653 fix->visual = FB_VISUAL_PSEUDOCOLOR;
654 break;
655 }
656 }
657
658 fix->accel = FB_ACCEL_NONE;
659
660 fix->xpanstep = 1;
661 fix->ypanstep = 1;
662 }
663
664 /* check new var and possibly modify it to be ok */
665 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
666 {
667 struct omapfb_info *ofbi = FB2OFB(fbi);
668 struct omap_dss_device *display = fb2display(fbi);
669 enum omap_color_mode mode = 0;
670 int i;
671 int r;
672
673 DBG("check_fb_var %d\n", ofbi->id);
674
675 WARN_ON(!atomic_read(&ofbi->region->lock_count));
676
677 r = fb_mode_to_dss_mode(var, &mode);
678 if (r) {
679 DBG("cannot convert var to omap dss mode\n");
680 return r;
681 }
682
683 for (i = 0; i < ofbi->num_overlays; ++i) {
684 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
685 DBG("invalid mode\n");
686 return -EINVAL;
687 }
688 }
689
690 if (var->rotate > 3)
691 return -EINVAL;
692
693 if (check_fb_res_bounds(var))
694 return -EINVAL;
695
696 /* When no memory is allocated ignore the size check */
697 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
698 return -EINVAL;
699
700 if (var->xres + var->xoffset > var->xres_virtual)
701 var->xoffset = var->xres_virtual - var->xres;
702 if (var->yres + var->yoffset > var->yres_virtual)
703 var->yoffset = var->yres_virtual - var->yres;
704
705 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
706 var->xres, var->yres,
707 var->xres_virtual, var->yres_virtual);
708
709 if (display && display->driver->get_dimensions) {
710 u32 w, h;
711 display->driver->get_dimensions(display, &w, &h);
712 var->width = DIV_ROUND_CLOSEST(w, 1000);
713 var->height = DIV_ROUND_CLOSEST(h, 1000);
714 } else {
715 var->height = -1;
716 var->width = -1;
717 }
718
719 var->grayscale = 0;
720
721 if (display && display->driver->get_timings) {
722 struct omap_video_timings timings;
723 display->driver->get_timings(display, &timings);
724
725 /* pixclock in ps, the rest in pixclock */
726 var->pixclock = timings.pixel_clock != 0 ?
727 KHZ2PICOS(timings.pixel_clock) :
728 0;
729 var->left_margin = timings.hbp;
730 var->right_margin = timings.hfp;
731 var->upper_margin = timings.vbp;
732 var->lower_margin = timings.vfp;
733 var->hsync_len = timings.hsw;
734 var->vsync_len = timings.vsw;
735 } else {
736 var->pixclock = 0;
737 var->left_margin = 0;
738 var->right_margin = 0;
739 var->upper_margin = 0;
740 var->lower_margin = 0;
741 var->hsync_len = 0;
742 var->vsync_len = 0;
743 }
744
745 /* TODO: get these from panel->config */
746 var->vmode = FB_VMODE_NONINTERLACED;
747 var->sync = 0;
748
749 return 0;
750 }
751
752 /*
753 * ---------------------------------------------------------------------------
754 * fbdev framework callbacks
755 * ---------------------------------------------------------------------------
756 */
757 static int omapfb_open(struct fb_info *fbi, int user)
758 {
759 return 0;
760 }
761
762 static int omapfb_release(struct fb_info *fbi, int user)
763 {
764 return 0;
765 }
766
767 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
768 const struct fb_fix_screeninfo *fix, int rotation)
769 {
770 unsigned offset;
771
772 offset = var->yoffset * fix->line_length +
773 var->xoffset * (var->bits_per_pixel >> 3);
774
775 return offset;
776 }
777
778 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
779 const struct fb_fix_screeninfo *fix, int rotation)
780 {
781 unsigned offset;
782
783 if (rotation == FB_ROTATE_UD)
784 offset = (var->yres_virtual - var->yres) *
785 fix->line_length;
786 else if (rotation == FB_ROTATE_CW)
787 offset = (var->yres_virtual - var->yres) *
788 (var->bits_per_pixel >> 3);
789 else
790 offset = 0;
791
792 if (rotation == FB_ROTATE_UR)
793 offset += var->yoffset * fix->line_length +
794 var->xoffset * (var->bits_per_pixel >> 3);
795 else if (rotation == FB_ROTATE_UD)
796 offset -= var->yoffset * fix->line_length +
797 var->xoffset * (var->bits_per_pixel >> 3);
798 else if (rotation == FB_ROTATE_CW)
799 offset -= var->xoffset * fix->line_length +
800 var->yoffset * (var->bits_per_pixel >> 3);
801 else if (rotation == FB_ROTATE_CCW)
802 offset += var->xoffset * fix->line_length +
803 var->yoffset * (var->bits_per_pixel >> 3);
804
805 return offset;
806 }
807
808 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
809 const struct fb_var_screeninfo *var,
810 const struct fb_fix_screeninfo *fix,
811 int rotation, u32 *paddr)
812 {
813 u32 data_start_p;
814 int offset;
815
816 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
817 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
818 else
819 data_start_p = omapfb_get_region_paddr(ofbi);
820
821 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
822 offset = calc_rotation_offset_vrfb(var, fix, rotation);
823 else
824 offset = calc_rotation_offset_dma(var, fix, rotation);
825
826 data_start_p += offset;
827
828 if (offset)
829 DBG("offset %d, %d = %d\n",
830 var->xoffset, var->yoffset, offset);
831
832 DBG("paddr %x\n", data_start_p);
833
834 *paddr = data_start_p;
835 }
836
837 /* setup overlay according to the fb */
838 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
839 u16 posx, u16 posy, u16 outw, u16 outh)
840 {
841 int r = 0;
842 struct omapfb_info *ofbi = FB2OFB(fbi);
843 struct fb_var_screeninfo *var = &fbi->var;
844 struct fb_fix_screeninfo *fix = &fbi->fix;
845 enum omap_color_mode mode = 0;
846 u32 data_start_p = 0;
847 struct omap_overlay_info info;
848 int xres, yres;
849 int screen_width;
850 int mirror;
851 int rotation = var->rotate;
852 int i;
853
854 WARN_ON(!atomic_read(&ofbi->region->lock_count));
855
856 for (i = 0; i < ofbi->num_overlays; i++) {
857 if (ovl != ofbi->overlays[i])
858 continue;
859
860 rotation = (rotation + ofbi->rotation[i]) % 4;
861 break;
862 }
863
864 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
865 posx, posy, outw, outh);
866
867 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
868 xres = var->yres;
869 yres = var->xres;
870 } else {
871 xres = var->xres;
872 yres = var->yres;
873 }
874
875 if (ofbi->region->size)
876 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
877
878 r = fb_mode_to_dss_mode(var, &mode);
879 if (r) {
880 DBG("fb_mode_to_dss_mode failed");
881 goto err;
882 }
883
884 switch (var->nonstd) {
885 case OMAPFB_COLOR_YUV422:
886 case OMAPFB_COLOR_YUY422:
887 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
888 screen_width = fix->line_length
889 / (var->bits_per_pixel >> 2);
890 break;
891 }
892 default:
893 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
894 break;
895 }
896
897 ovl->get_overlay_info(ovl, &info);
898
899 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
900 mirror = 0;
901 else
902 mirror = ofbi->mirror;
903
904 info.paddr = data_start_p;
905 info.screen_width = screen_width;
906 info.width = xres;
907 info.height = yres;
908 info.color_mode = mode;
909 info.rotation_type = ofbi->rotation_type;
910 info.rotation = rotation;
911 info.mirror = mirror;
912
913 info.pos_x = posx;
914 info.pos_y = posy;
915 info.out_width = outw;
916 info.out_height = outh;
917
918 r = ovl->set_overlay_info(ovl, &info);
919 if (r) {
920 DBG("ovl->setup_overlay_info failed\n");
921 goto err;
922 }
923
924 return 0;
925
926 err:
927 DBG("setup_overlay failed\n");
928 return r;
929 }
930
931 /* apply var to the overlay */
932 int omapfb_apply_changes(struct fb_info *fbi, int init)
933 {
934 int r = 0;
935 struct omapfb_info *ofbi = FB2OFB(fbi);
936 struct fb_var_screeninfo *var = &fbi->var;
937 struct omap_overlay *ovl;
938 u16 posx, posy;
939 u16 outw, outh;
940 int i;
941
942 #ifdef DEBUG
943 if (omapfb_test_pattern)
944 fill_fb(fbi);
945 #endif
946
947 WARN_ON(!atomic_read(&ofbi->region->lock_count));
948
949 for (i = 0; i < ofbi->num_overlays; i++) {
950 ovl = ofbi->overlays[i];
951
952 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
953
954 if (ofbi->region->size == 0) {
955 /* the fb is not available. disable the overlay */
956 omapfb_overlay_enable(ovl, 0);
957 if (!init && ovl->manager)
958 ovl->manager->apply(ovl->manager);
959 continue;
960 }
961
962 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
963 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
964 if (rotation == FB_ROTATE_CW ||
965 rotation == FB_ROTATE_CCW) {
966 outw = var->yres;
967 outh = var->xres;
968 } else {
969 outw = var->xres;
970 outh = var->yres;
971 }
972 } else {
973 outw = ovl->info.out_width;
974 outh = ovl->info.out_height;
975 }
976
977 if (init) {
978 posx = 0;
979 posy = 0;
980 } else {
981 posx = ovl->info.pos_x;
982 posy = ovl->info.pos_y;
983 }
984
985 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
986 if (r)
987 goto err;
988
989 if (!init && ovl->manager)
990 ovl->manager->apply(ovl->manager);
991 }
992 return 0;
993 err:
994 DBG("apply_changes failed\n");
995 return r;
996 }
997
998 /* checks var and eventually tweaks it to something supported,
999 * DO NOT MODIFY PAR */
1000 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1001 {
1002 struct omapfb_info *ofbi = FB2OFB(fbi);
1003 int r;
1004
1005 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1006
1007 omapfb_get_mem_region(ofbi->region);
1008
1009 r = check_fb_var(fbi, var);
1010
1011 omapfb_put_mem_region(ofbi->region);
1012
1013 return r;
1014 }
1015
1016 /* set the video mode according to info->var */
1017 static int omapfb_set_par(struct fb_info *fbi)
1018 {
1019 struct omapfb_info *ofbi = FB2OFB(fbi);
1020 int r;
1021
1022 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1023
1024 omapfb_get_mem_region(ofbi->region);
1025
1026 set_fb_fix(fbi);
1027
1028 r = setup_vrfb_rotation(fbi);
1029 if (r)
1030 goto out;
1031
1032 r = omapfb_apply_changes(fbi, 0);
1033
1034 out:
1035 omapfb_put_mem_region(ofbi->region);
1036
1037 return r;
1038 }
1039
1040 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1041 struct fb_info *fbi)
1042 {
1043 struct omapfb_info *ofbi = FB2OFB(fbi);
1044 struct fb_var_screeninfo new_var;
1045 int r;
1046
1047 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1048
1049 if (var->xoffset == fbi->var.xoffset &&
1050 var->yoffset == fbi->var.yoffset)
1051 return 0;
1052
1053 new_var = fbi->var;
1054 new_var.xoffset = var->xoffset;
1055 new_var.yoffset = var->yoffset;
1056
1057 fbi->var = new_var;
1058
1059 omapfb_get_mem_region(ofbi->region);
1060
1061 r = omapfb_apply_changes(fbi, 0);
1062
1063 omapfb_put_mem_region(ofbi->region);
1064
1065 return r;
1066 }
1067
1068 static void mmap_user_open(struct vm_area_struct *vma)
1069 {
1070 struct omapfb2_mem_region *rg = vma->vm_private_data;
1071
1072 omapfb_get_mem_region(rg);
1073 atomic_inc(&rg->map_count);
1074 omapfb_put_mem_region(rg);
1075 }
1076
1077 static void mmap_user_close(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_dec(&rg->map_count);
1083 omapfb_put_mem_region(rg);
1084 }
1085
1086 static struct vm_operations_struct mmap_user_ops = {
1087 .open = mmap_user_open,
1088 .close = mmap_user_close,
1089 };
1090
1091 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1092 {
1093 struct omapfb_info *ofbi = FB2OFB(fbi);
1094 struct fb_fix_screeninfo *fix = &fbi->fix;
1095 struct omapfb2_mem_region *rg;
1096 unsigned long off;
1097 unsigned long start;
1098 u32 len;
1099 int r = -EINVAL;
1100
1101 if (vma->vm_end - vma->vm_start == 0)
1102 return 0;
1103 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1104 return -EINVAL;
1105 off = vma->vm_pgoff << PAGE_SHIFT;
1106
1107 rg = omapfb_get_mem_region(ofbi->region);
1108
1109 start = omapfb_get_region_paddr(ofbi);
1110 len = fix->smem_len;
1111 if (off >= len)
1112 goto error;
1113 if ((vma->vm_end - vma->vm_start + off) > len)
1114 goto error;
1115
1116 off += start;
1117
1118 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1119
1120 vma->vm_pgoff = off >> PAGE_SHIFT;
1121 vma->vm_flags |= VM_IO | VM_RESERVED;
1122 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1123 vma->vm_ops = &mmap_user_ops;
1124 vma->vm_private_data = rg;
1125 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1126 vma->vm_end - vma->vm_start,
1127 vma->vm_page_prot)) {
1128 r = -EAGAIN;
1129 goto error;
1130 }
1131
1132 /* vm_ops.open won't be called for mmap itself. */
1133 atomic_inc(&rg->map_count);
1134
1135 omapfb_put_mem_region(rg);
1136
1137 return 0;
1138
1139 error:
1140 omapfb_put_mem_region(ofbi->region);
1141
1142 return r;
1143 }
1144
1145 /* Store a single color palette entry into a pseudo palette or the hardware
1146 * palette if one is available. For now we support only 16bpp and thus store
1147 * the entry only to the pseudo palette.
1148 */
1149 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1150 u_int blue, u_int transp, int update_hw_pal)
1151 {
1152 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1153 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1154 struct fb_var_screeninfo *var = &fbi->var;
1155 int r = 0;
1156
1157 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1158
1159 /*switch (plane->color_mode) {*/
1160 switch (mode) {
1161 case OMAPFB_COLOR_YUV422:
1162 case OMAPFB_COLOR_YUV420:
1163 case OMAPFB_COLOR_YUY422:
1164 r = -EINVAL;
1165 break;
1166 case OMAPFB_COLOR_CLUT_8BPP:
1167 case OMAPFB_COLOR_CLUT_4BPP:
1168 case OMAPFB_COLOR_CLUT_2BPP:
1169 case OMAPFB_COLOR_CLUT_1BPP:
1170 /*
1171 if (fbdev->ctrl->setcolreg)
1172 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1173 transp, update_hw_pal);
1174 */
1175 /* Fallthrough */
1176 r = -EINVAL;
1177 break;
1178 case OMAPFB_COLOR_RGB565:
1179 case OMAPFB_COLOR_RGB444:
1180 case OMAPFB_COLOR_RGB24P:
1181 case OMAPFB_COLOR_RGB24U:
1182 if (r != 0)
1183 break;
1184
1185 if (regno < 16) {
1186 u16 pal;
1187 pal = ((red >> (16 - var->red.length)) <<
1188 var->red.offset) |
1189 ((green >> (16 - var->green.length)) <<
1190 var->green.offset) |
1191 (blue >> (16 - var->blue.length));
1192 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1193 }
1194 break;
1195 default:
1196 BUG();
1197 }
1198 return r;
1199 }
1200
1201 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1202 u_int transp, struct fb_info *info)
1203 {
1204 DBG("setcolreg\n");
1205
1206 return _setcolreg(info, regno, red, green, blue, transp, 1);
1207 }
1208
1209 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1210 {
1211 int count, index, r;
1212 u16 *red, *green, *blue, *transp;
1213 u16 trans = 0xffff;
1214
1215 DBG("setcmap\n");
1216
1217 red = cmap->red;
1218 green = cmap->green;
1219 blue = cmap->blue;
1220 transp = cmap->transp;
1221 index = cmap->start;
1222
1223 for (count = 0; count < cmap->len; count++) {
1224 if (transp)
1225 trans = *transp++;
1226 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1227 count == cmap->len - 1);
1228 if (r != 0)
1229 return r;
1230 }
1231
1232 return 0;
1233 }
1234
1235 static int omapfb_blank(int blank, struct fb_info *fbi)
1236 {
1237 struct omapfb_info *ofbi = FB2OFB(fbi);
1238 struct omapfb2_device *fbdev = ofbi->fbdev;
1239 struct omap_dss_device *display = fb2display(fbi);
1240 struct omapfb_display_data *d;
1241 int r = 0;
1242
1243 if (!display)
1244 return -EINVAL;
1245
1246 omapfb_lock(fbdev);
1247
1248 d = get_display_data(fbdev, display);
1249
1250 switch (blank) {
1251 case FB_BLANK_UNBLANK:
1252 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1253 goto exit;
1254
1255 if (display->driver->resume)
1256 r = display->driver->resume(display);
1257
1258 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1259 d->update_mode == OMAPFB_AUTO_UPDATE &&
1260 !d->auto_update_work_enabled)
1261 omapfb_start_auto_update(fbdev, display);
1262
1263 break;
1264
1265 case FB_BLANK_NORMAL:
1266 /* FB_BLANK_NORMAL could be implemented.
1267 * Needs DSS additions. */
1268 case FB_BLANK_VSYNC_SUSPEND:
1269 case FB_BLANK_HSYNC_SUSPEND:
1270 case FB_BLANK_POWERDOWN:
1271 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1272 goto exit;
1273
1274 if (d->auto_update_work_enabled)
1275 omapfb_stop_auto_update(fbdev, display);
1276
1277 if (display->driver->suspend)
1278 r = display->driver->suspend(display);
1279
1280 break;
1281
1282 default:
1283 r = -EINVAL;
1284 }
1285
1286 exit:
1287 omapfb_unlock(fbdev);
1288
1289 return r;
1290 }
1291
1292 #if 0
1293 /* XXX fb_read and fb_write are needed for VRFB */
1294 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1295 size_t count, loff_t *ppos)
1296 {
1297 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1298 /* XXX needed for VRFB */
1299 return count;
1300 }
1301 #endif
1302
1303 static struct fb_ops omapfb_ops = {
1304 .owner = THIS_MODULE,
1305 .fb_open = omapfb_open,
1306 .fb_release = omapfb_release,
1307 .fb_fillrect = cfb_fillrect,
1308 .fb_copyarea = cfb_copyarea,
1309 .fb_imageblit = cfb_imageblit,
1310 .fb_blank = omapfb_blank,
1311 .fb_ioctl = omapfb_ioctl,
1312 .fb_check_var = omapfb_check_var,
1313 .fb_set_par = omapfb_set_par,
1314 .fb_pan_display = omapfb_pan_display,
1315 .fb_mmap = omapfb_mmap,
1316 .fb_setcolreg = omapfb_setcolreg,
1317 .fb_setcmap = omapfb_setcmap,
1318 /*.fb_write = omapfb_write,*/
1319 };
1320
1321 static void omapfb_free_fbmem(struct fb_info *fbi)
1322 {
1323 struct omapfb_info *ofbi = FB2OFB(fbi);
1324 struct omapfb2_device *fbdev = ofbi->fbdev;
1325 struct omapfb2_mem_region *rg;
1326
1327 rg = ofbi->region;
1328
1329 WARN_ON(atomic_read(&rg->map_count));
1330
1331 if (rg->paddr)
1332 if (omap_vram_free(rg->paddr, rg->size))
1333 dev_err(fbdev->dev, "VRAM FREE failed\n");
1334
1335 if (rg->vaddr)
1336 iounmap(rg->vaddr);
1337
1338 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1339 /* unmap the 0 angle rotation */
1340 if (rg->vrfb.vaddr[0]) {
1341 iounmap(rg->vrfb.vaddr[0]);
1342 omap_vrfb_release_ctx(&rg->vrfb);
1343 rg->vrfb.vaddr[0] = NULL;
1344 }
1345 }
1346
1347 rg->vaddr = NULL;
1348 rg->paddr = 0;
1349 rg->alloc = 0;
1350 rg->size = 0;
1351 }
1352
1353 static void clear_fb_info(struct fb_info *fbi)
1354 {
1355 memset(&fbi->var, 0, sizeof(fbi->var));
1356 memset(&fbi->fix, 0, sizeof(fbi->fix));
1357 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1358 }
1359
1360 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1361 {
1362 int i;
1363
1364 DBG("free all fbmem\n");
1365
1366 for (i = 0; i < fbdev->num_fbs; i++) {
1367 struct fb_info *fbi = fbdev->fbs[i];
1368 omapfb_free_fbmem(fbi);
1369 clear_fb_info(fbi);
1370 }
1371
1372 return 0;
1373 }
1374
1375 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1376 unsigned long paddr)
1377 {
1378 struct omapfb_info *ofbi = FB2OFB(fbi);
1379 struct omapfb2_device *fbdev = ofbi->fbdev;
1380 struct omapfb2_mem_region *rg;
1381 void __iomem *vaddr;
1382 int r;
1383
1384 rg = ofbi->region;
1385
1386 rg->paddr = 0;
1387 rg->vaddr = NULL;
1388 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1389 rg->size = 0;
1390 rg->type = 0;
1391 rg->alloc = false;
1392 rg->map = false;
1393
1394 size = PAGE_ALIGN(size);
1395
1396 if (!paddr) {
1397 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1398 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1399 } else {
1400 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1401 ofbi->id);
1402 r = omap_vram_reserve(paddr, size);
1403 }
1404
1405 if (r) {
1406 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1407 return -ENOMEM;
1408 }
1409
1410 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1411 vaddr = ioremap_wc(paddr, size);
1412
1413 if (!vaddr) {
1414 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1415 omap_vram_free(paddr, size);
1416 return -ENOMEM;
1417 }
1418
1419 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1420 } else {
1421 r = omap_vrfb_request_ctx(&rg->vrfb);
1422 if (r) {
1423 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1424 return r;
1425 }
1426
1427 vaddr = NULL;
1428 }
1429
1430 rg->paddr = paddr;
1431 rg->vaddr = vaddr;
1432 rg->size = size;
1433 rg->alloc = 1;
1434
1435 return 0;
1436 }
1437
1438 /* allocate fbmem using display resolution as reference */
1439 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1440 unsigned long paddr)
1441 {
1442 struct omapfb_info *ofbi = FB2OFB(fbi);
1443 struct omapfb2_device *fbdev = ofbi->fbdev;
1444 struct omap_dss_device *display;
1445 int bytespp;
1446
1447 display = fb2display(fbi);
1448
1449 if (!display)
1450 return 0;
1451
1452 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1453 case 16:
1454 bytespp = 2;
1455 break;
1456 case 24:
1457 bytespp = 4;
1458 break;
1459 default:
1460 bytespp = 4;
1461 break;
1462 }
1463
1464 if (!size) {
1465 u16 w, h;
1466
1467 display->driver->get_resolution(display, &w, &h);
1468
1469 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1470 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1471 omap_vrfb_min_phys_size(h, w, bytespp));
1472
1473 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1474 w * h * bytespp, size);
1475 } else {
1476 size = w * h * bytespp;
1477 }
1478 }
1479
1480 if (!size)
1481 return 0;
1482
1483 return omapfb_alloc_fbmem(fbi, size, paddr);
1484 }
1485
1486 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1487 {
1488 enum omap_color_mode mode;
1489
1490 switch (fmt) {
1491 case OMAPFB_COLOR_RGB565:
1492 mode = OMAP_DSS_COLOR_RGB16;
1493 break;
1494 case OMAPFB_COLOR_YUV422:
1495 mode = OMAP_DSS_COLOR_YUV2;
1496 break;
1497 case OMAPFB_COLOR_CLUT_8BPP:
1498 mode = OMAP_DSS_COLOR_CLUT8;
1499 break;
1500 case OMAPFB_COLOR_CLUT_4BPP:
1501 mode = OMAP_DSS_COLOR_CLUT4;
1502 break;
1503 case OMAPFB_COLOR_CLUT_2BPP:
1504 mode = OMAP_DSS_COLOR_CLUT2;
1505 break;
1506 case OMAPFB_COLOR_CLUT_1BPP:
1507 mode = OMAP_DSS_COLOR_CLUT1;
1508 break;
1509 case OMAPFB_COLOR_RGB444:
1510 mode = OMAP_DSS_COLOR_RGB12U;
1511 break;
1512 case OMAPFB_COLOR_YUY422:
1513 mode = OMAP_DSS_COLOR_UYVY;
1514 break;
1515 case OMAPFB_COLOR_ARGB16:
1516 mode = OMAP_DSS_COLOR_ARGB16;
1517 break;
1518 case OMAPFB_COLOR_RGB24U:
1519 mode = OMAP_DSS_COLOR_RGB24U;
1520 break;
1521 case OMAPFB_COLOR_RGB24P:
1522 mode = OMAP_DSS_COLOR_RGB24P;
1523 break;
1524 case OMAPFB_COLOR_ARGB32:
1525 mode = OMAP_DSS_COLOR_ARGB32;
1526 break;
1527 case OMAPFB_COLOR_RGBA32:
1528 mode = OMAP_DSS_COLOR_RGBA32;
1529 break;
1530 case OMAPFB_COLOR_RGBX32:
1531 mode = OMAP_DSS_COLOR_RGBX32;
1532 break;
1533 default:
1534 mode = -EINVAL;
1535 }
1536
1537 return mode;
1538 }
1539
1540 static int omapfb_parse_vram_param(const char *param, int max_entries,
1541 unsigned long *sizes, unsigned long *paddrs)
1542 {
1543 int fbnum;
1544 unsigned long size;
1545 unsigned long paddr = 0;
1546 char *p, *start;
1547
1548 start = (char *)param;
1549
1550 while (1) {
1551 p = start;
1552
1553 fbnum = simple_strtoul(p, &p, 10);
1554
1555 if (p == param)
1556 return -EINVAL;
1557
1558 if (*p != ':')
1559 return -EINVAL;
1560
1561 if (fbnum >= max_entries)
1562 return -EINVAL;
1563
1564 size = memparse(p + 1, &p);
1565
1566 if (!size)
1567 return -EINVAL;
1568
1569 paddr = 0;
1570
1571 if (*p == '@') {
1572 paddr = simple_strtoul(p + 1, &p, 16);
1573
1574 if (!paddr)
1575 return -EINVAL;
1576
1577 }
1578
1579 paddrs[fbnum] = paddr;
1580 sizes[fbnum] = size;
1581
1582 if (*p == 0)
1583 break;
1584
1585 if (*p != ',')
1586 return -EINVAL;
1587
1588 ++p;
1589
1590 start = p;
1591 }
1592
1593 return 0;
1594 }
1595
1596 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1597 {
1598 int i, r;
1599 unsigned long vram_sizes[10];
1600 unsigned long vram_paddrs[10];
1601
1602 memset(&vram_sizes, 0, sizeof(vram_sizes));
1603 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1604
1605 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1606 vram_sizes, vram_paddrs)) {
1607 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1608
1609 memset(&vram_sizes, 0, sizeof(vram_sizes));
1610 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1611 }
1612
1613 if (fbdev->dev->platform_data) {
1614 struct omapfb_platform_data *opd;
1615 opd = fbdev->dev->platform_data;
1616 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1617 if (!vram_sizes[i]) {
1618 unsigned long size;
1619 unsigned long paddr;
1620
1621 size = opd->mem_desc.region[i].size;
1622 paddr = opd->mem_desc.region[i].paddr;
1623
1624 vram_sizes[i] = size;
1625 vram_paddrs[i] = paddr;
1626 }
1627 }
1628 }
1629
1630 for (i = 0; i < fbdev->num_fbs; i++) {
1631 /* allocate memory automatically only for fb0, or if
1632 * excplicitly defined with vram or plat data option */
1633 if (i == 0 || vram_sizes[i] != 0) {
1634 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1635 vram_sizes[i], vram_paddrs[i]);
1636
1637 if (r)
1638 return r;
1639 }
1640 }
1641
1642 for (i = 0; i < fbdev->num_fbs; i++) {
1643 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1644 struct omapfb2_mem_region *rg;
1645 rg = ofbi->region;
1646
1647 DBG("region%d phys %08x virt %p size=%lu\n",
1648 i,
1649 rg->paddr,
1650 rg->vaddr,
1651 rg->size);
1652 }
1653
1654 return 0;
1655 }
1656
1657 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1658 {
1659 struct omapfb_info *ofbi = FB2OFB(fbi);
1660 struct omapfb2_device *fbdev = ofbi->fbdev;
1661 struct omap_dss_device *display = fb2display(fbi);
1662 struct omapfb2_mem_region *rg = ofbi->region;
1663 unsigned long old_size = rg->size;
1664 unsigned long old_paddr = rg->paddr;
1665 int old_type = rg->type;
1666 int r;
1667
1668 if (type > OMAPFB_MEMTYPE_MAX)
1669 return -EINVAL;
1670
1671 size = PAGE_ALIGN(size);
1672
1673 if (old_size == size && old_type == type)
1674 return 0;
1675
1676 if (display && display->driver->sync)
1677 display->driver->sync(display);
1678
1679 omapfb_free_fbmem(fbi);
1680
1681 if (size == 0) {
1682 clear_fb_info(fbi);
1683 return 0;
1684 }
1685
1686 r = omapfb_alloc_fbmem(fbi, size, 0);
1687
1688 if (r) {
1689 if (old_size)
1690 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1691
1692 if (rg->size == 0)
1693 clear_fb_info(fbi);
1694
1695 return r;
1696 }
1697
1698 if (old_size == size)
1699 return 0;
1700
1701 if (old_size == 0) {
1702 DBG("initializing fb %d\n", ofbi->id);
1703 r = omapfb_fb_init(fbdev, fbi);
1704 if (r) {
1705 DBG("omapfb_fb_init failed\n");
1706 goto err;
1707 }
1708 r = omapfb_apply_changes(fbi, 1);
1709 if (r) {
1710 DBG("omapfb_apply_changes failed\n");
1711 goto err;
1712 }
1713 } else {
1714 struct fb_var_screeninfo new_var;
1715 memcpy(&new_var, &fbi->var, sizeof(new_var));
1716 r = check_fb_var(fbi, &new_var);
1717 if (r)
1718 goto err;
1719 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1720 set_fb_fix(fbi);
1721 r = setup_vrfb_rotation(fbi);
1722 if (r)
1723 goto err;
1724 }
1725
1726 return 0;
1727 err:
1728 omapfb_free_fbmem(fbi);
1729 clear_fb_info(fbi);
1730 return r;
1731 }
1732
1733 static void omapfb_auto_update_work(struct work_struct *work)
1734 {
1735 struct omap_dss_device *dssdev;
1736 struct omap_dss_driver *dssdrv;
1737 struct omapfb_display_data *d;
1738 u16 w, h;
1739 unsigned int freq;
1740 struct omapfb2_device *fbdev;
1741
1742 d = container_of(work, struct omapfb_display_data,
1743 auto_update_work.work);
1744
1745 dssdev = d->dssdev;
1746 dssdrv = dssdev->driver;
1747 fbdev = d->fbdev;
1748
1749 if (!dssdrv || !dssdrv->update)
1750 return;
1751
1752 if (dssdrv->sync)
1753 dssdrv->sync(dssdev);
1754
1755 dssdrv->get_resolution(dssdev, &w, &h);
1756 dssdrv->update(dssdev, 0, 0, w, h);
1757
1758 freq = auto_update_freq;
1759 if (freq == 0)
1760 freq = 20;
1761 queue_delayed_work(fbdev->auto_update_wq,
1762 &d->auto_update_work, HZ / freq);
1763 }
1764
1765 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1766 struct omap_dss_device *display)
1767 {
1768 struct omapfb_display_data *d;
1769
1770 if (fbdev->auto_update_wq == NULL) {
1771 struct workqueue_struct *wq;
1772
1773 wq = create_singlethread_workqueue("omapfb_auto_update");
1774
1775 if (wq == NULL) {
1776 dev_err(fbdev->dev, "Failed to create workqueue for "
1777 "auto-update\n");
1778 return;
1779 }
1780
1781 fbdev->auto_update_wq = wq;
1782 }
1783
1784 d = get_display_data(fbdev, display);
1785
1786 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1787
1788 d->auto_update_work_enabled = true;
1789
1790 omapfb_auto_update_work(&d->auto_update_work.work);
1791 }
1792
1793 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1794 struct omap_dss_device *display)
1795 {
1796 struct omapfb_display_data *d;
1797
1798 d = get_display_data(fbdev, display);
1799
1800 cancel_delayed_work_sync(&d->auto_update_work);
1801
1802 d->auto_update_work_enabled = false;
1803 }
1804
1805 /* initialize fb_info, var, fix to something sane based on the display */
1806 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1807 {
1808 struct fb_var_screeninfo *var = &fbi->var;
1809 struct omap_dss_device *display = fb2display(fbi);
1810 struct omapfb_info *ofbi = FB2OFB(fbi);
1811 int r = 0;
1812
1813 fbi->fbops = &omapfb_ops;
1814 fbi->flags = FBINFO_FLAG_DEFAULT;
1815 fbi->pseudo_palette = fbdev->pseudo_palette;
1816
1817 if (ofbi->region->size == 0) {
1818 clear_fb_info(fbi);
1819 return 0;
1820 }
1821
1822 var->nonstd = 0;
1823 var->bits_per_pixel = 0;
1824
1825 var->rotate = def_rotate;
1826
1827 /*
1828 * Check if there is a default color format set in the board file,
1829 * and use this format instead the default deducted from the
1830 * display bpp.
1831 */
1832 if (fbdev->dev->platform_data) {
1833 struct omapfb_platform_data *opd;
1834 int id = ofbi->id;
1835
1836 opd = fbdev->dev->platform_data;
1837 if (opd->mem_desc.region[id].format_used) {
1838 enum omap_color_mode mode;
1839 enum omapfb_color_format format;
1840
1841 format = opd->mem_desc.region[id].format;
1842 mode = fb_format_to_dss_mode(format);
1843 if (mode < 0) {
1844 r = mode;
1845 goto err;
1846 }
1847 r = dss_mode_to_fb_mode(mode, var);
1848 if (r < 0)
1849 goto err;
1850 }
1851 }
1852
1853 if (display) {
1854 u16 w, h;
1855 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1856
1857 display->driver->get_resolution(display, &w, &h);
1858
1859 if (rotation == FB_ROTATE_CW ||
1860 rotation == FB_ROTATE_CCW) {
1861 var->xres = h;
1862 var->yres = w;
1863 } else {
1864 var->xres = w;
1865 var->yres = h;
1866 }
1867
1868 var->xres_virtual = var->xres;
1869 var->yres_virtual = var->yres;
1870
1871 if (!var->bits_per_pixel) {
1872 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1873 case 16:
1874 var->bits_per_pixel = 16;
1875 break;
1876 case 24:
1877 var->bits_per_pixel = 32;
1878 break;
1879 default:
1880 dev_err(fbdev->dev, "illegal display "
1881 "bpp\n");
1882 return -EINVAL;
1883 }
1884 }
1885 } else {
1886 /* if there's no display, let's just guess some basic values */
1887 var->xres = 320;
1888 var->yres = 240;
1889 var->xres_virtual = var->xres;
1890 var->yres_virtual = var->yres;
1891 if (!var->bits_per_pixel)
1892 var->bits_per_pixel = 16;
1893 }
1894
1895 r = check_fb_var(fbi, var);
1896 if (r)
1897 goto err;
1898
1899 set_fb_fix(fbi);
1900 r = setup_vrfb_rotation(fbi);
1901 if (r)
1902 goto err;
1903
1904 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1905 if (r)
1906 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1907
1908 err:
1909 return r;
1910 }
1911
1912 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1913 {
1914 fb_dealloc_cmap(&fbi->cmap);
1915 }
1916
1917
1918 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1919 {
1920 int i;
1921
1922 DBG("free_resources\n");
1923
1924 if (fbdev == NULL)
1925 return;
1926
1927 for (i = 0; i < fbdev->num_fbs; i++)
1928 unregister_framebuffer(fbdev->fbs[i]);
1929
1930 /* free the reserved fbmem */
1931 omapfb_free_all_fbmem(fbdev);
1932
1933 for (i = 0; i < fbdev->num_fbs; i++) {
1934 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1935 framebuffer_release(fbdev->fbs[i]);
1936 }
1937
1938 for (i = 0; i < fbdev->num_displays; i++) {
1939 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1940
1941 if (fbdev->displays[i].auto_update_work_enabled)
1942 omapfb_stop_auto_update(fbdev, dssdev);
1943
1944 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1945 dssdev->driver->disable(dssdev);
1946
1947 omap_dss_put_device(dssdev);
1948 }
1949
1950 if (fbdev->auto_update_wq != NULL) {
1951 flush_workqueue(fbdev->auto_update_wq);
1952 destroy_workqueue(fbdev->auto_update_wq);
1953 fbdev->auto_update_wq = NULL;
1954 }
1955
1956 dev_set_drvdata(fbdev->dev, NULL);
1957 kfree(fbdev);
1958 }
1959
1960 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1961 {
1962 int r, i;
1963
1964 fbdev->num_fbs = 0;
1965
1966 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1967
1968 /* allocate fb_infos */
1969 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1970 struct fb_info *fbi;
1971 struct omapfb_info *ofbi;
1972
1973 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1974 fbdev->dev);
1975
1976 if (fbi == NULL) {
1977 dev_err(fbdev->dev,
1978 "unable to allocate memory for plane info\n");
1979 return -ENOMEM;
1980 }
1981
1982 clear_fb_info(fbi);
1983
1984 fbdev->fbs[i] = fbi;
1985
1986 ofbi = FB2OFB(fbi);
1987 ofbi->fbdev = fbdev;
1988 ofbi->id = i;
1989
1990 ofbi->region = &fbdev->regions[i];
1991 ofbi->region->id = i;
1992 init_rwsem(&ofbi->region->lock);
1993
1994 /* assign these early, so that fb alloc can use them */
1995 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1996 OMAP_DSS_ROT_DMA;
1997 ofbi->mirror = def_mirror;
1998
1999 fbdev->num_fbs++;
2000 }
2001
2002 DBG("fb_infos allocated\n");
2003
2004 /* assign overlays for the fbs */
2005 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
2006 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
2007
2008 ofbi->overlays[0] = fbdev->overlays[i];
2009 ofbi->num_overlays = 1;
2010 }
2011
2012 /* allocate fb memories */
2013 r = omapfb_allocate_all_fbs(fbdev);
2014 if (r) {
2015 dev_err(fbdev->dev, "failed to allocate fbmem\n");
2016 return r;
2017 }
2018
2019 DBG("fbmems allocated\n");
2020
2021 /* setup fb_infos */
2022 for (i = 0; i < fbdev->num_fbs; i++) {
2023 struct fb_info *fbi = fbdev->fbs[i];
2024 struct omapfb_info *ofbi = FB2OFB(fbi);
2025
2026 omapfb_get_mem_region(ofbi->region);
2027 r = omapfb_fb_init(fbdev, fbi);
2028 omapfb_put_mem_region(ofbi->region);
2029
2030 if (r) {
2031 dev_err(fbdev->dev, "failed to setup fb_info\n");
2032 return r;
2033 }
2034 }
2035
2036 DBG("fb_infos initialized\n");
2037
2038 for (i = 0; i < fbdev->num_fbs; i++) {
2039 r = register_framebuffer(fbdev->fbs[i]);
2040 if (r != 0) {
2041 dev_err(fbdev->dev,
2042 "registering framebuffer %d failed\n", i);
2043 return r;
2044 }
2045 }
2046
2047 DBG("framebuffers registered\n");
2048
2049 for (i = 0; i < fbdev->num_fbs; i++) {
2050 struct fb_info *fbi = fbdev->fbs[i];
2051 struct omapfb_info *ofbi = FB2OFB(fbi);
2052
2053 omapfb_get_mem_region(ofbi->region);
2054 r = omapfb_apply_changes(fbi, 1);
2055 omapfb_put_mem_region(ofbi->region);
2056
2057 if (r) {
2058 dev_err(fbdev->dev, "failed to change mode\n");
2059 return r;
2060 }
2061 }
2062
2063 /* Enable fb0 */
2064 if (fbdev->num_fbs > 0) {
2065 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2066
2067 if (ofbi->num_overlays > 0) {
2068 struct omap_overlay *ovl = ofbi->overlays[0];
2069
2070 r = omapfb_overlay_enable(ovl, 1);
2071
2072 if (r) {
2073 dev_err(fbdev->dev,
2074 "failed to enable overlay\n");
2075 return r;
2076 }
2077 }
2078 }
2079
2080 DBG("create_framebuffers done\n");
2081
2082 return 0;
2083 }
2084
2085 static int omapfb_mode_to_timings(const char *mode_str,
2086 struct omap_video_timings *timings, u8 *bpp)
2087 {
2088 struct fb_info *fbi;
2089 struct fb_var_screeninfo *var;
2090 struct fb_ops *fbops;
2091 int r;
2092
2093 #ifdef CONFIG_OMAP2_DSS_VENC
2094 if (strcmp(mode_str, "pal") == 0) {
2095 *timings = omap_dss_pal_timings;
2096 *bpp = 24;
2097 return 0;
2098 } else if (strcmp(mode_str, "ntsc") == 0) {
2099 *timings = omap_dss_ntsc_timings;
2100 *bpp = 24;
2101 return 0;
2102 }
2103 #endif
2104
2105 /* this is quite a hack, but I wanted to use the modedb and for
2106 * that we need fb_info and var, so we create dummy ones */
2107
2108 *bpp = 0;
2109 fbi = NULL;
2110 var = NULL;
2111 fbops = NULL;
2112
2113 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2114 if (fbi == NULL) {
2115 r = -ENOMEM;
2116 goto err;
2117 }
2118
2119 var = kzalloc(sizeof(*var), GFP_KERNEL);
2120 if (var == NULL) {
2121 r = -ENOMEM;
2122 goto err;
2123 }
2124
2125 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2126 if (fbops == NULL) {
2127 r = -ENOMEM;
2128 goto err;
2129 }
2130
2131 fbi->fbops = fbops;
2132
2133 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2134 if (r == 0) {
2135 r = -EINVAL;
2136 goto err;
2137 }
2138
2139 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2140 timings->hbp = var->left_margin;
2141 timings->hfp = var->right_margin;
2142 timings->vbp = var->upper_margin;
2143 timings->vfp = var->lower_margin;
2144 timings->hsw = var->hsync_len;
2145 timings->vsw = var->vsync_len;
2146 timings->x_res = var->xres;
2147 timings->y_res = var->yres;
2148
2149 switch (var->bits_per_pixel) {
2150 case 16:
2151 *bpp = 16;
2152 break;
2153 case 24:
2154 case 32:
2155 default:
2156 *bpp = 24;
2157 break;
2158 }
2159
2160 r = 0;
2161
2162 err:
2163 kfree(fbi);
2164 kfree(var);
2165 kfree(fbops);
2166
2167 return r;
2168 }
2169
2170 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2171 struct omap_dss_device *display, char *mode_str)
2172 {
2173 int r;
2174 u8 bpp;
2175 struct omap_video_timings timings, temp_timings;
2176 struct omapfb_display_data *d;
2177
2178 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2179 if (r)
2180 return r;
2181
2182 d = get_display_data(fbdev, display);
2183 d->bpp_override = bpp;
2184
2185 if (display->driver->check_timings) {
2186 r = display->driver->check_timings(display, &timings);
2187 if (r)
2188 return r;
2189 } else {
2190 /* If check_timings is not present compare xres and yres */
2191 if (display->driver->get_timings) {
2192 display->driver->get_timings(display, &temp_timings);
2193
2194 if (temp_timings.x_res != timings.x_res ||
2195 temp_timings.y_res != timings.y_res)
2196 return -EINVAL;
2197 }
2198 }
2199
2200 if (display->driver->set_timings)
2201 display->driver->set_timings(display, &timings);
2202
2203 return 0;
2204 }
2205
2206 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2207 struct omap_dss_device *dssdev)
2208 {
2209 struct omapfb_display_data *d;
2210
2211 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2212
2213 d = get_display_data(fbdev, dssdev);
2214
2215 if (d->bpp_override != 0)
2216 return d->bpp_override;
2217
2218 return dssdev->driver->get_recommended_bpp(dssdev);
2219 }
2220
2221 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2222 {
2223 char *str, *options, *this_opt;
2224 int r = 0;
2225
2226 str = kstrdup(def_mode, GFP_KERNEL);
2227 if (!str)
2228 return -ENOMEM;
2229 options = str;
2230
2231 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2232 char *p, *display_str, *mode_str;
2233 struct omap_dss_device *display;
2234 int i;
2235
2236 p = strchr(this_opt, ':');
2237 if (!p) {
2238 r = -EINVAL;
2239 break;
2240 }
2241
2242 *p = 0;
2243 display_str = this_opt;
2244 mode_str = p + 1;
2245
2246 display = NULL;
2247 for (i = 0; i < fbdev->num_displays; ++i) {
2248 if (strcmp(fbdev->displays[i].dssdev->name,
2249 display_str) == 0) {
2250 display = fbdev->displays[i].dssdev;
2251 break;
2252 }
2253 }
2254
2255 if (!display) {
2256 r = -EINVAL;
2257 break;
2258 }
2259
2260 r = omapfb_set_def_mode(fbdev, display, mode_str);
2261 if (r)
2262 break;
2263 }
2264
2265 kfree(str);
2266
2267 return r;
2268 }
2269
2270 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2271 struct omap_video_timings *t)
2272 {
2273 t->x_res = m->xres;
2274 t->y_res = m->yres;
2275 t->pixel_clock = PICOS2KHZ(m->pixclock);
2276 t->hsw = m->hsync_len;
2277 t->hfp = m->right_margin;
2278 t->hbp = m->left_margin;
2279 t->vsw = m->vsync_len;
2280 t->vfp = m->lower_margin;
2281 t->vbp = m->upper_margin;
2282 }
2283
2284 static int omapfb_find_best_mode(struct omap_dss_device *display,
2285 struct omap_video_timings *timings)
2286 {
2287 struct fb_monspecs *specs;
2288 u8 *edid;
2289 int r, i, best_xres, best_idx, len;
2290
2291 if (!display->driver->read_edid)
2292 return -ENODEV;
2293
2294 len = 0x80 * 2;
2295 edid = kmalloc(len, GFP_KERNEL);
2296
2297 r = display->driver->read_edid(display, edid, len);
2298 if (r < 0)
2299 goto err1;
2300
2301 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2302
2303 fb_edid_to_monspecs(edid, specs);
2304
2305 if (edid[126] > 0)
2306 fb_edid_add_monspecs(edid + 0x80, specs);
2307
2308 best_xres = 0;
2309 best_idx = -1;
2310
2311 for (i = 0; i < specs->modedb_len; ++i) {
2312 struct fb_videomode *m;
2313 struct omap_video_timings t;
2314
2315 m = &specs->modedb[i];
2316
2317 if (m->pixclock == 0)
2318 continue;
2319
2320 /* skip repeated pixel modes */
2321 if (m->xres == 2880 || m->xres == 1440)
2322 continue;
2323
2324 fb_videomode_to_omap_timings(m, &t);
2325
2326 r = display->driver->check_timings(display, &t);
2327 if (r == 0 && best_xres < m->xres) {
2328 best_xres = m->xres;
2329 best_idx = i;
2330 }
2331 }
2332
2333 if (best_xres == 0) {
2334 r = -ENOENT;
2335 goto err2;
2336 }
2337
2338 fb_videomode_to_omap_timings(&specs->modedb[best_idx], timings);
2339
2340 r = 0;
2341
2342 err2:
2343 fb_destroy_modedb(specs->modedb);
2344 kfree(specs);
2345 err1:
2346 kfree(edid);
2347
2348 return r;
2349 }
2350
2351 static int omapfb_init_display(struct omapfb2_device *fbdev,
2352 struct omap_dss_device *dssdev)
2353 {
2354 struct omap_dss_driver *dssdrv = dssdev->driver;
2355 struct omapfb_display_data *d;
2356 int r;
2357
2358 r = dssdrv->enable(dssdev);
2359 if (r) {
2360 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2361 dssdev->name);
2362 return r;
2363 }
2364
2365 d = get_display_data(fbdev, dssdev);
2366
2367 d->fbdev = fbdev;
2368
2369 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2370 u16 w, h;
2371
2372 if (auto_update) {
2373 omapfb_start_auto_update(fbdev, dssdev);
2374 d->update_mode = OMAPFB_AUTO_UPDATE;
2375 } else {
2376 d->update_mode = OMAPFB_MANUAL_UPDATE;
2377 }
2378
2379 if (dssdrv->enable_te) {
2380 r = dssdrv->enable_te(dssdev, 1);
2381 if (r) {
2382 dev_err(fbdev->dev, "Failed to set TE\n");
2383 return r;
2384 }
2385 }
2386
2387 dssdrv->get_resolution(dssdev, &w, &h);
2388 r = dssdrv->update(dssdev, 0, 0, w, h);
2389 if (r) {
2390 dev_err(fbdev->dev,
2391 "Failed to update display\n");
2392 return r;
2393 }
2394 } else {
2395 d->update_mode = OMAPFB_AUTO_UPDATE;
2396 }
2397
2398 return 0;
2399 }
2400
2401 static int omapfb_probe(struct platform_device *pdev)
2402 {
2403 struct omapfb2_device *fbdev = NULL;
2404 int r = 0;
2405 int i;
2406 struct omap_overlay *ovl;
2407 struct omap_dss_device *def_display;
2408 struct omap_dss_device *dssdev;
2409
2410 DBG("omapfb_probe\n");
2411
2412 if (pdev->num_resources != 0) {
2413 dev_err(&pdev->dev, "probed for an unknown device\n");
2414 r = -ENODEV;
2415 goto err0;
2416 }
2417
2418 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2419 if (fbdev == NULL) {
2420 r = -ENOMEM;
2421 goto err0;
2422 }
2423
2424 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2425 * available for OMAP2 and OMAP3
2426 */
2427 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2428 def_vrfb = 0;
2429 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2430 "ignoring the module parameter vrfb=y\n");
2431 }
2432
2433
2434 mutex_init(&fbdev->mtx);
2435
2436 fbdev->dev = &pdev->dev;
2437 platform_set_drvdata(pdev, fbdev);
2438
2439 r = 0;
2440 fbdev->num_displays = 0;
2441 dssdev = NULL;
2442 for_each_dss_dev(dssdev) {
2443 struct omapfb_display_data *d;
2444
2445 omap_dss_get_device(dssdev);
2446
2447 if (!dssdev->driver) {
2448 dev_warn(&pdev->dev, "no driver for display: %s\n",
2449 dssdev->name);
2450 omap_dss_put_device(dssdev);
2451 continue;
2452 }
2453
2454 d = &fbdev->displays[fbdev->num_displays++];
2455 d->dssdev = dssdev;
2456 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2457 d->update_mode = OMAPFB_MANUAL_UPDATE;
2458 else
2459 d->update_mode = OMAPFB_AUTO_UPDATE;
2460 }
2461
2462 if (r)
2463 goto cleanup;
2464
2465 if (fbdev->num_displays == 0) {
2466 dev_err(&pdev->dev, "no displays\n");
2467 r = -EINVAL;
2468 goto cleanup;
2469 }
2470
2471 fbdev->num_overlays = omap_dss_get_num_overlays();
2472 for (i = 0; i < fbdev->num_overlays; i++)
2473 fbdev->overlays[i] = omap_dss_get_overlay(i);
2474
2475 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2476 for (i = 0; i < fbdev->num_managers; i++)
2477 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2478
2479 /* gfx overlay should be the default one. find a display
2480 * connected to that, and use it as default display */
2481 ovl = omap_dss_get_overlay(0);
2482 if (ovl->manager && ovl->manager->device) {
2483 def_display = ovl->manager->device;
2484 } else {
2485 dev_warn(&pdev->dev, "cannot find default display\n");
2486 def_display = NULL;
2487 }
2488
2489 if (def_mode && strlen(def_mode) > 0) {
2490 if (omapfb_parse_def_modes(fbdev))
2491 dev_warn(&pdev->dev, "cannot parse default modes\n");
2492 } else if (def_display && def_display->driver->set_timings &&
2493 def_display->driver->check_timings) {
2494 struct omap_video_timings t;
2495
2496 r = omapfb_find_best_mode(def_display, &t);
2497
2498 if (r == 0)
2499 def_display->driver->set_timings(def_display, &t);
2500 }
2501
2502 r = omapfb_create_framebuffers(fbdev);
2503 if (r)
2504 goto cleanup;
2505
2506 for (i = 0; i < fbdev->num_managers; i++) {
2507 struct omap_overlay_manager *mgr;
2508 mgr = fbdev->managers[i];
2509 r = mgr->apply(mgr);
2510 if (r)
2511 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2512 }
2513
2514 DBG("mgr->apply'ed\n");
2515
2516 if (def_display) {
2517 r = omapfb_init_display(fbdev, def_display);
2518 if (r) {
2519 dev_err(fbdev->dev,
2520 "failed to initialize default "
2521 "display\n");
2522 goto cleanup;
2523 }
2524 }
2525
2526 DBG("create sysfs for fbs\n");
2527 r = omapfb_create_sysfs(fbdev);
2528 if (r) {
2529 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2530 goto cleanup;
2531 }
2532
2533 return 0;
2534
2535 cleanup:
2536 omapfb_free_resources(fbdev);
2537 err0:
2538 dev_err(&pdev->dev, "failed to setup omapfb\n");
2539 return r;
2540 }
2541
2542 static int omapfb_remove(struct platform_device *pdev)
2543 {
2544 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2545
2546 /* FIXME: wait till completion of pending events */
2547
2548 omapfb_remove_sysfs(fbdev);
2549
2550 omapfb_free_resources(fbdev);
2551
2552 return 0;
2553 }
2554
2555 static struct platform_driver omapfb_driver = {
2556 .probe = omapfb_probe,
2557 .remove = omapfb_remove,
2558 .driver = {
2559 .name = "omapfb",
2560 .owner = THIS_MODULE,
2561 },
2562 };
2563
2564 static int __init omapfb_init(void)
2565 {
2566 DBG("omapfb_init\n");
2567
2568 if (platform_driver_register(&omapfb_driver)) {
2569 printk(KERN_ERR "failed to register omapfb driver\n");
2570 return -ENODEV;
2571 }
2572
2573 return 0;
2574 }
2575
2576 static void __exit omapfb_exit(void)
2577 {
2578 DBG("omapfb_exit\n");
2579 platform_driver_unregister(&omapfb_driver);
2580 }
2581
2582 module_param_named(mode, def_mode, charp, 0);
2583 module_param_named(vram, def_vram, charp, 0);
2584 module_param_named(rotate, def_rotate, int, 0);
2585 module_param_named(vrfb, def_vrfb, bool, 0);
2586 module_param_named(mirror, def_mirror, bool, 0);
2587
2588 /* late_initcall to let panel/ctrl drivers loaded first.
2589 * I guess better option would be a more dynamic approach,
2590 * so that omapfb reacts to new panels when they are loaded */
2591 late_initcall(omapfb_init);
2592 /*module_init(omapfb_init);*/
2593 module_exit(omapfb_exit);
2594
2595 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2596 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2597 MODULE_LICENSE("GPL v2");
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