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Merge branch 'akpm'
[linux-2.6/next.git] / drivers / video / omap2 / omapfb / omapfb-main.c
blob602b71a92d3c3092db31f7b0fd349ce2e938b796
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 int def_vrfb;
47 static int def_rotate;
48 static int 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 unsigned int omapfb_debug;
56 module_param_named(debug, omapfb_debug, bool, 0644);
57 static unsigned int 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, void __iomem **vaddr)
812 {
813 u32 data_start_p;
814 void __iomem *data_start_v;
815 int offset;
816
817 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
818 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
819 data_start_v = NULL;
820 } else {
821 data_start_p = omapfb_get_region_paddr(ofbi);
822 data_start_v = omapfb_get_region_vaddr(ofbi);
823 }
824
825 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
826 offset = calc_rotation_offset_vrfb(var, fix, rotation);
827 else
828 offset = calc_rotation_offset_dma(var, fix, rotation);
829
830 data_start_p += offset;
831 data_start_v += offset;
832
833 if (offset)
834 DBG("offset %d, %d = %d\n",
835 var->xoffset, var->yoffset, offset);
836
837 DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
838
839 *paddr = data_start_p;
840 *vaddr = data_start_v;
841 }
842
843 /* setup overlay according to the fb */
844 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
845 u16 posx, u16 posy, u16 outw, u16 outh)
846 {
847 int r = 0;
848 struct omapfb_info *ofbi = FB2OFB(fbi);
849 struct fb_var_screeninfo *var = &fbi->var;
850 struct fb_fix_screeninfo *fix = &fbi->fix;
851 enum omap_color_mode mode = 0;
852 u32 data_start_p = 0;
853 void __iomem *data_start_v = NULL;
854 struct omap_overlay_info info;
855 int xres, yres;
856 int screen_width;
857 int mirror;
858 int rotation = var->rotate;
859 int i;
860
861 WARN_ON(!atomic_read(&ofbi->region->lock_count));
862
863 for (i = 0; i < ofbi->num_overlays; i++) {
864 if (ovl != ofbi->overlays[i])
865 continue;
866
867 rotation = (rotation + ofbi->rotation[i]) % 4;
868 break;
869 }
870
871 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
872 posx, posy, outw, outh);
873
874 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
875 xres = var->yres;
876 yres = var->xres;
877 } else {
878 xres = var->xres;
879 yres = var->yres;
880 }
881
882 if (ofbi->region->size)
883 omapfb_calc_addr(ofbi, var, fix, rotation,
884 &data_start_p, &data_start_v);
885
886 r = fb_mode_to_dss_mode(var, &mode);
887 if (r) {
888 DBG("fb_mode_to_dss_mode failed");
889 goto err;
890 }
891
892 switch (var->nonstd) {
893 case OMAPFB_COLOR_YUV422:
894 case OMAPFB_COLOR_YUY422:
895 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
896 screen_width = fix->line_length
897 / (var->bits_per_pixel >> 2);
898 break;
899 }
900 default:
901 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
902 break;
903 }
904
905 ovl->get_overlay_info(ovl, &info);
906
907 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
908 mirror = 0;
909 else
910 mirror = ofbi->mirror;
911
912 info.paddr = data_start_p;
913 info.vaddr = data_start_v;
914 info.screen_width = screen_width;
915 info.width = xres;
916 info.height = yres;
917 info.color_mode = mode;
918 info.rotation_type = ofbi->rotation_type;
919 info.rotation = rotation;
920 info.mirror = mirror;
921
922 info.pos_x = posx;
923 info.pos_y = posy;
924 info.out_width = outw;
925 info.out_height = outh;
926
927 r = ovl->set_overlay_info(ovl, &info);
928 if (r) {
929 DBG("ovl->setup_overlay_info failed\n");
930 goto err;
931 }
932
933 return 0;
934
935 err:
936 DBG("setup_overlay failed\n");
937 return r;
938 }
939
940 /* apply var to the overlay */
941 int omapfb_apply_changes(struct fb_info *fbi, int init)
942 {
943 int r = 0;
944 struct omapfb_info *ofbi = FB2OFB(fbi);
945 struct fb_var_screeninfo *var = &fbi->var;
946 struct omap_overlay *ovl;
947 u16 posx, posy;
948 u16 outw, outh;
949 int i;
950
951 #ifdef DEBUG
952 if (omapfb_test_pattern)
953 fill_fb(fbi);
954 #endif
955
956 WARN_ON(!atomic_read(&ofbi->region->lock_count));
957
958 for (i = 0; i < ofbi->num_overlays; i++) {
959 ovl = ofbi->overlays[i];
960
961 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
962
963 if (ofbi->region->size == 0) {
964 /* the fb is not available. disable the overlay */
965 omapfb_overlay_enable(ovl, 0);
966 if (!init && ovl->manager)
967 ovl->manager->apply(ovl->manager);
968 continue;
969 }
970
971 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
972 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
973 if (rotation == FB_ROTATE_CW ||
974 rotation == FB_ROTATE_CCW) {
975 outw = var->yres;
976 outh = var->xres;
977 } else {
978 outw = var->xres;
979 outh = var->yres;
980 }
981 } else {
982 outw = ovl->info.out_width;
983 outh = ovl->info.out_height;
984 }
985
986 if (init) {
987 posx = 0;
988 posy = 0;
989 } else {
990 posx = ovl->info.pos_x;
991 posy = ovl->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(OMAP_VRAM_MEMTYPE_SDRAM, 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 enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1496 {
1497 enum omap_color_mode mode;
1498
1499 switch (fmt) {
1500 case OMAPFB_COLOR_RGB565:
1501 mode = OMAP_DSS_COLOR_RGB16;
1502 break;
1503 case OMAPFB_COLOR_YUV422:
1504 mode = OMAP_DSS_COLOR_YUV2;
1505 break;
1506 case OMAPFB_COLOR_CLUT_8BPP:
1507 mode = OMAP_DSS_COLOR_CLUT8;
1508 break;
1509 case OMAPFB_COLOR_CLUT_4BPP:
1510 mode = OMAP_DSS_COLOR_CLUT4;
1511 break;
1512 case OMAPFB_COLOR_CLUT_2BPP:
1513 mode = OMAP_DSS_COLOR_CLUT2;
1514 break;
1515 case OMAPFB_COLOR_CLUT_1BPP:
1516 mode = OMAP_DSS_COLOR_CLUT1;
1517 break;
1518 case OMAPFB_COLOR_RGB444:
1519 mode = OMAP_DSS_COLOR_RGB12U;
1520 break;
1521 case OMAPFB_COLOR_YUY422:
1522 mode = OMAP_DSS_COLOR_UYVY;
1523 break;
1524 case OMAPFB_COLOR_ARGB16:
1525 mode = OMAP_DSS_COLOR_ARGB16;
1526 break;
1527 case OMAPFB_COLOR_RGB24U:
1528 mode = OMAP_DSS_COLOR_RGB24U;
1529 break;
1530 case OMAPFB_COLOR_RGB24P:
1531 mode = OMAP_DSS_COLOR_RGB24P;
1532 break;
1533 case OMAPFB_COLOR_ARGB32:
1534 mode = OMAP_DSS_COLOR_ARGB32;
1535 break;
1536 case OMAPFB_COLOR_RGBA32:
1537 mode = OMAP_DSS_COLOR_RGBA32;
1538 break;
1539 case OMAPFB_COLOR_RGBX32:
1540 mode = OMAP_DSS_COLOR_RGBX32;
1541 break;
1542 default:
1543 mode = -EINVAL;
1544 }
1545
1546 return mode;
1547 }
1548
1549 static int omapfb_parse_vram_param(const char *param, int max_entries,
1550 unsigned long *sizes, unsigned long *paddrs)
1551 {
1552 int fbnum;
1553 unsigned long size;
1554 unsigned long paddr = 0;
1555 char *p, *start;
1556
1557 start = (char *)param;
1558
1559 while (1) {
1560 p = start;
1561
1562 fbnum = simple_strtoul(p, &p, 10);
1563
1564 if (p == param)
1565 return -EINVAL;
1566
1567 if (*p != ':')
1568 return -EINVAL;
1569
1570 if (fbnum >= max_entries)
1571 return -EINVAL;
1572
1573 size = memparse(p + 1, &p);
1574
1575 if (!size)
1576 return -EINVAL;
1577
1578 paddr = 0;
1579
1580 if (*p == '@') {
1581 paddr = simple_strtoul(p + 1, &p, 16);
1582
1583 if (!paddr)
1584 return -EINVAL;
1585
1586 }
1587
1588 paddrs[fbnum] = paddr;
1589 sizes[fbnum] = size;
1590
1591 if (*p == 0)
1592 break;
1593
1594 if (*p != ',')
1595 return -EINVAL;
1596
1597 ++p;
1598
1599 start = p;
1600 }
1601
1602 return 0;
1603 }
1604
1605 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1606 {
1607 int i, r;
1608 unsigned long vram_sizes[10];
1609 unsigned long vram_paddrs[10];
1610
1611 memset(&vram_sizes, 0, sizeof(vram_sizes));
1612 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1613
1614 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1615 vram_sizes, vram_paddrs)) {
1616 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1617
1618 memset(&vram_sizes, 0, sizeof(vram_sizes));
1619 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1620 }
1621
1622 if (fbdev->dev->platform_data) {
1623 struct omapfb_platform_data *opd;
1624 opd = fbdev->dev->platform_data;
1625 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1626 if (!vram_sizes[i]) {
1627 unsigned long size;
1628 unsigned long paddr;
1629
1630 size = opd->mem_desc.region[i].size;
1631 paddr = opd->mem_desc.region[i].paddr;
1632
1633 vram_sizes[i] = size;
1634 vram_paddrs[i] = paddr;
1635 }
1636 }
1637 }
1638
1639 for (i = 0; i < fbdev->num_fbs; i++) {
1640 /* allocate memory automatically only for fb0, or if
1641 * excplicitly defined with vram or plat data option */
1642 if (i == 0 || vram_sizes[i] != 0) {
1643 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1644 vram_sizes[i], vram_paddrs[i]);
1645
1646 if (r)
1647 return r;
1648 }
1649 }
1650
1651 for (i = 0; i < fbdev->num_fbs; i++) {
1652 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1653 struct omapfb2_mem_region *rg;
1654 rg = ofbi->region;
1655
1656 DBG("region%d phys %08x virt %p size=%lu\n",
1657 i,
1658 rg->paddr,
1659 rg->vaddr,
1660 rg->size);
1661 }
1662
1663 return 0;
1664 }
1665
1666 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1667 {
1668 struct omapfb_info *ofbi = FB2OFB(fbi);
1669 struct omapfb2_device *fbdev = ofbi->fbdev;
1670 struct omap_dss_device *display = fb2display(fbi);
1671 struct omapfb2_mem_region *rg = ofbi->region;
1672 unsigned long old_size = rg->size;
1673 unsigned long old_paddr = rg->paddr;
1674 int old_type = rg->type;
1675 int r;
1676
1677 if (type > OMAPFB_MEMTYPE_MAX)
1678 return -EINVAL;
1679
1680 size = PAGE_ALIGN(size);
1681
1682 if (old_size == size && old_type == type)
1683 return 0;
1684
1685 if (display && display->driver->sync)
1686 display->driver->sync(display);
1687
1688 omapfb_free_fbmem(fbi);
1689
1690 if (size == 0) {
1691 clear_fb_info(fbi);
1692 return 0;
1693 }
1694
1695 r = omapfb_alloc_fbmem(fbi, size, 0);
1696
1697 if (r) {
1698 if (old_size)
1699 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1700
1701 if (rg->size == 0)
1702 clear_fb_info(fbi);
1703
1704 return r;
1705 }
1706
1707 if (old_size == size)
1708 return 0;
1709
1710 if (old_size == 0) {
1711 DBG("initializing fb %d\n", ofbi->id);
1712 r = omapfb_fb_init(fbdev, fbi);
1713 if (r) {
1714 DBG("omapfb_fb_init failed\n");
1715 goto err;
1716 }
1717 r = omapfb_apply_changes(fbi, 1);
1718 if (r) {
1719 DBG("omapfb_apply_changes failed\n");
1720 goto err;
1721 }
1722 } else {
1723 struct fb_var_screeninfo new_var;
1724 memcpy(&new_var, &fbi->var, sizeof(new_var));
1725 r = check_fb_var(fbi, &new_var);
1726 if (r)
1727 goto err;
1728 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1729 set_fb_fix(fbi);
1730 r = setup_vrfb_rotation(fbi);
1731 if (r)
1732 goto err;
1733 }
1734
1735 return 0;
1736 err:
1737 omapfb_free_fbmem(fbi);
1738 clear_fb_info(fbi);
1739 return r;
1740 }
1741
1742 static void omapfb_auto_update_work(struct work_struct *work)
1743 {
1744 struct omap_dss_device *dssdev;
1745 struct omap_dss_driver *dssdrv;
1746 struct omapfb_display_data *d;
1747 u16 w, h;
1748 unsigned int freq;
1749 struct omapfb2_device *fbdev;
1750
1751 d = container_of(work, struct omapfb_display_data,
1752 auto_update_work.work);
1753
1754 dssdev = d->dssdev;
1755 dssdrv = dssdev->driver;
1756 fbdev = d->fbdev;
1757
1758 if (!dssdrv || !dssdrv->update)
1759 return;
1760
1761 if (dssdrv->sync)
1762 dssdrv->sync(dssdev);
1763
1764 dssdrv->get_resolution(dssdev, &w, &h);
1765 dssdrv->update(dssdev, 0, 0, w, h);
1766
1767 freq = auto_update_freq;
1768 if (freq == 0)
1769 freq = 20;
1770 queue_delayed_work(fbdev->auto_update_wq,
1771 &d->auto_update_work, HZ / freq);
1772 }
1773
1774 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1775 struct omap_dss_device *display)
1776 {
1777 struct omapfb_display_data *d;
1778
1779 if (fbdev->auto_update_wq == NULL) {
1780 struct workqueue_struct *wq;
1781
1782 wq = create_singlethread_workqueue("omapfb_auto_update");
1783
1784 if (wq == NULL) {
1785 dev_err(fbdev->dev, "Failed to create workqueue for "
1786 "auto-update\n");
1787 return;
1788 }
1789
1790 fbdev->auto_update_wq = wq;
1791 }
1792
1793 d = get_display_data(fbdev, display);
1794
1795 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1796
1797 d->auto_update_work_enabled = true;
1798
1799 omapfb_auto_update_work(&d->auto_update_work.work);
1800 }
1801
1802 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1803 struct omap_dss_device *display)
1804 {
1805 struct omapfb_display_data *d;
1806
1807 d = get_display_data(fbdev, display);
1808
1809 cancel_delayed_work_sync(&d->auto_update_work);
1810
1811 d->auto_update_work_enabled = false;
1812 }
1813
1814 /* initialize fb_info, var, fix to something sane based on the display */
1815 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1816 {
1817 struct fb_var_screeninfo *var = &fbi->var;
1818 struct omap_dss_device *display = fb2display(fbi);
1819 struct omapfb_info *ofbi = FB2OFB(fbi);
1820 int r = 0;
1821
1822 fbi->fbops = &omapfb_ops;
1823 fbi->flags = FBINFO_FLAG_DEFAULT;
1824 fbi->pseudo_palette = fbdev->pseudo_palette;
1825
1826 if (ofbi->region->size == 0) {
1827 clear_fb_info(fbi);
1828 return 0;
1829 }
1830
1831 var->nonstd = 0;
1832 var->bits_per_pixel = 0;
1833
1834 var->rotate = def_rotate;
1835
1836 /*
1837 * Check if there is a default color format set in the board file,
1838 * and use this format instead the default deducted from the
1839 * display bpp.
1840 */
1841 if (fbdev->dev->platform_data) {
1842 struct omapfb_platform_data *opd;
1843 int id = ofbi->id;
1844
1845 opd = fbdev->dev->platform_data;
1846 if (opd->mem_desc.region[id].format_used) {
1847 enum omap_color_mode mode;
1848 enum omapfb_color_format format;
1849
1850 format = opd->mem_desc.region[id].format;
1851 mode = fb_format_to_dss_mode(format);
1852 if (mode < 0) {
1853 r = mode;
1854 goto err;
1855 }
1856 r = dss_mode_to_fb_mode(mode, var);
1857 if (r < 0)
1858 goto err;
1859 }
1860 }
1861
1862 if (display) {
1863 u16 w, h;
1864 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1865
1866 display->driver->get_resolution(display, &w, &h);
1867
1868 if (rotation == FB_ROTATE_CW ||
1869 rotation == FB_ROTATE_CCW) {
1870 var->xres = h;
1871 var->yres = w;
1872 } else {
1873 var->xres = w;
1874 var->yres = h;
1875 }
1876
1877 var->xres_virtual = var->xres;
1878 var->yres_virtual = var->yres;
1879
1880 if (!var->bits_per_pixel) {
1881 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1882 case 16:
1883 var->bits_per_pixel = 16;
1884 break;
1885 case 24:
1886 var->bits_per_pixel = 32;
1887 break;
1888 default:
1889 dev_err(fbdev->dev, "illegal display "
1890 "bpp\n");
1891 return -EINVAL;
1892 }
1893 }
1894 } else {
1895 /* if there's no display, let's just guess some basic values */
1896 var->xres = 320;
1897 var->yres = 240;
1898 var->xres_virtual = var->xres;
1899 var->yres_virtual = var->yres;
1900 if (!var->bits_per_pixel)
1901 var->bits_per_pixel = 16;
1902 }
1903
1904 r = check_fb_var(fbi, var);
1905 if (r)
1906 goto err;
1907
1908 set_fb_fix(fbi);
1909 r = setup_vrfb_rotation(fbi);
1910 if (r)
1911 goto err;
1912
1913 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1914 if (r)
1915 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1916
1917 err:
1918 return r;
1919 }
1920
1921 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1922 {
1923 fb_dealloc_cmap(&fbi->cmap);
1924 }
1925
1926
1927 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1928 {
1929 int i;
1930
1931 DBG("free_resources\n");
1932
1933 if (fbdev == NULL)
1934 return;
1935
1936 for (i = 0; i < fbdev->num_fbs; i++)
1937 unregister_framebuffer(fbdev->fbs[i]);
1938
1939 /* free the reserved fbmem */
1940 omapfb_free_all_fbmem(fbdev);
1941
1942 for (i = 0; i < fbdev->num_fbs; i++) {
1943 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1944 framebuffer_release(fbdev->fbs[i]);
1945 }
1946
1947 for (i = 0; i < fbdev->num_displays; i++) {
1948 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1949
1950 if (fbdev->displays[i].auto_update_work_enabled)
1951 omapfb_stop_auto_update(fbdev, dssdev);
1952
1953 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1954 dssdev->driver->disable(dssdev);
1955
1956 omap_dss_put_device(dssdev);
1957 }
1958
1959 if (fbdev->auto_update_wq != NULL) {
1960 flush_workqueue(fbdev->auto_update_wq);
1961 destroy_workqueue(fbdev->auto_update_wq);
1962 fbdev->auto_update_wq = NULL;
1963 }
1964
1965 dev_set_drvdata(fbdev->dev, NULL);
1966 kfree(fbdev);
1967 }
1968
1969 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1970 {
1971 int r, i;
1972
1973 fbdev->num_fbs = 0;
1974
1975 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1976
1977 /* allocate fb_infos */
1978 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1979 struct fb_info *fbi;
1980 struct omapfb_info *ofbi;
1981
1982 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1983 fbdev->dev);
1984
1985 if (fbi == NULL) {
1986 dev_err(fbdev->dev,
1987 "unable to allocate memory for plane info\n");
1988 return -ENOMEM;
1989 }
1990
1991 clear_fb_info(fbi);
1992
1993 fbdev->fbs[i] = fbi;
1994
1995 ofbi = FB2OFB(fbi);
1996 ofbi->fbdev = fbdev;
1997 ofbi->id = i;
1998
1999 ofbi->region = &fbdev->regions[i];
2000 ofbi->region->id = i;
2001 init_rwsem(&ofbi->region->lock);
2002
2003 /* assign these early, so that fb alloc can use them */
2004 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
2005 OMAP_DSS_ROT_DMA;
2006 ofbi->mirror = def_mirror;
2007
2008 fbdev->num_fbs++;
2009 }
2010
2011 DBG("fb_infos allocated\n");
2012
2013 /* assign overlays for the fbs */
2014 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
2015 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
2016
2017 ofbi->overlays[0] = fbdev->overlays[i];
2018 ofbi->num_overlays = 1;
2019 }
2020
2021 /* allocate fb memories */
2022 r = omapfb_allocate_all_fbs(fbdev);
2023 if (r) {
2024 dev_err(fbdev->dev, "failed to allocate fbmem\n");
2025 return r;
2026 }
2027
2028 DBG("fbmems allocated\n");
2029
2030 /* setup fb_infos */
2031 for (i = 0; i < fbdev->num_fbs; i++) {
2032 struct fb_info *fbi = fbdev->fbs[i];
2033 struct omapfb_info *ofbi = FB2OFB(fbi);
2034
2035 omapfb_get_mem_region(ofbi->region);
2036 r = omapfb_fb_init(fbdev, fbi);
2037 omapfb_put_mem_region(ofbi->region);
2038
2039 if (r) {
2040 dev_err(fbdev->dev, "failed to setup fb_info\n");
2041 return r;
2042 }
2043 }
2044
2045 DBG("fb_infos initialized\n");
2046
2047 for (i = 0; i < fbdev->num_fbs; i++) {
2048 r = register_framebuffer(fbdev->fbs[i]);
2049 if (r != 0) {
2050 dev_err(fbdev->dev,
2051 "registering framebuffer %d failed\n", i);
2052 return r;
2053 }
2054 }
2055
2056 DBG("framebuffers registered\n");
2057
2058 for (i = 0; i < fbdev->num_fbs; i++) {
2059 struct fb_info *fbi = fbdev->fbs[i];
2060 struct omapfb_info *ofbi = FB2OFB(fbi);
2061
2062 omapfb_get_mem_region(ofbi->region);
2063 r = omapfb_apply_changes(fbi, 1);
2064 omapfb_put_mem_region(ofbi->region);
2065
2066 if (r) {
2067 dev_err(fbdev->dev, "failed to change mode\n");
2068 return r;
2069 }
2070 }
2071
2072 /* Enable fb0 */
2073 if (fbdev->num_fbs > 0) {
2074 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2075
2076 if (ofbi->num_overlays > 0) {
2077 struct omap_overlay *ovl = ofbi->overlays[0];
2078
2079 r = omapfb_overlay_enable(ovl, 1);
2080
2081 if (r) {
2082 dev_err(fbdev->dev,
2083 "failed to enable overlay\n");
2084 return r;
2085 }
2086 }
2087 }
2088
2089 DBG("create_framebuffers done\n");
2090
2091 return 0;
2092 }
2093
2094 static int omapfb_mode_to_timings(const char *mode_str,
2095 struct omap_video_timings *timings, u8 *bpp)
2096 {
2097 struct fb_info *fbi;
2098 struct fb_var_screeninfo *var;
2099 struct fb_ops *fbops;
2100 int r;
2101
2102 #ifdef CONFIG_OMAP2_DSS_VENC
2103 if (strcmp(mode_str, "pal") == 0) {
2104 *timings = omap_dss_pal_timings;
2105 *bpp = 24;
2106 return 0;
2107 } else if (strcmp(mode_str, "ntsc") == 0) {
2108 *timings = omap_dss_ntsc_timings;
2109 *bpp = 24;
2110 return 0;
2111 }
2112 #endif
2113
2114 /* this is quite a hack, but I wanted to use the modedb and for
2115 * that we need fb_info and var, so we create dummy ones */
2116
2117 *bpp = 0;
2118 fbi = NULL;
2119 var = NULL;
2120 fbops = NULL;
2121
2122 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2123 if (fbi == NULL) {
2124 r = -ENOMEM;
2125 goto err;
2126 }
2127
2128 var = kzalloc(sizeof(*var), GFP_KERNEL);
2129 if (var == NULL) {
2130 r = -ENOMEM;
2131 goto err;
2132 }
2133
2134 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2135 if (fbops == NULL) {
2136 r = -ENOMEM;
2137 goto err;
2138 }
2139
2140 fbi->fbops = fbops;
2141
2142 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2143 if (r == 0) {
2144 r = -EINVAL;
2145 goto err;
2146 }
2147
2148 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2149 timings->hbp = var->left_margin;
2150 timings->hfp = var->right_margin;
2151 timings->vbp = var->upper_margin;
2152 timings->vfp = var->lower_margin;
2153 timings->hsw = var->hsync_len;
2154 timings->vsw = var->vsync_len;
2155 timings->x_res = var->xres;
2156 timings->y_res = var->yres;
2157
2158 switch (var->bits_per_pixel) {
2159 case 16:
2160 *bpp = 16;
2161 break;
2162 case 24:
2163 case 32:
2164 default:
2165 *bpp = 24;
2166 break;
2167 }
2168
2169 r = 0;
2170
2171 err:
2172 kfree(fbi);
2173 kfree(var);
2174 kfree(fbops);
2175
2176 return r;
2177 }
2178
2179 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2180 struct omap_dss_device *display, char *mode_str)
2181 {
2182 int r;
2183 u8 bpp;
2184 struct omap_video_timings timings, temp_timings;
2185 struct omapfb_display_data *d;
2186
2187 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2188 if (r)
2189 return r;
2190
2191 d = get_display_data(fbdev, display);
2192 d->bpp_override = bpp;
2193
2194 if (display->driver->check_timings) {
2195 r = display->driver->check_timings(display, &timings);
2196 if (r)
2197 return r;
2198 } else {
2199 /* If check_timings is not present compare xres and yres */
2200 if (display->driver->get_timings) {
2201 display->driver->get_timings(display, &temp_timings);
2202
2203 if (temp_timings.x_res != timings.x_res ||
2204 temp_timings.y_res != timings.y_res)
2205 return -EINVAL;
2206 }
2207 }
2208
2209 if (display->driver->set_timings)
2210 display->driver->set_timings(display, &timings);
2211
2212 return 0;
2213 }
2214
2215 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2216 struct omap_dss_device *dssdev)
2217 {
2218 struct omapfb_display_data *d;
2219
2220 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2221
2222 d = get_display_data(fbdev, dssdev);
2223
2224 if (d->bpp_override != 0)
2225 return d->bpp_override;
2226
2227 return dssdev->driver->get_recommended_bpp(dssdev);
2228 }
2229
2230 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2231 {
2232 char *str, *options, *this_opt;
2233 int r = 0;
2234
2235 str = kstrdup(def_mode, GFP_KERNEL);
2236 if (!str)
2237 return -ENOMEM;
2238 options = str;
2239
2240 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2241 char *p, *display_str, *mode_str;
2242 struct omap_dss_device *display;
2243 int i;
2244
2245 p = strchr(this_opt, ':');
2246 if (!p) {
2247 r = -EINVAL;
2248 break;
2249 }
2250
2251 *p = 0;
2252 display_str = this_opt;
2253 mode_str = p + 1;
2254
2255 display = NULL;
2256 for (i = 0; i < fbdev->num_displays; ++i) {
2257 if (strcmp(fbdev->displays[i].dssdev->name,
2258 display_str) == 0) {
2259 display = fbdev->displays[i].dssdev;
2260 break;
2261 }
2262 }
2263
2264 if (!display) {
2265 r = -EINVAL;
2266 break;
2267 }
2268
2269 r = omapfb_set_def_mode(fbdev, display, mode_str);
2270 if (r)
2271 break;
2272 }
2273
2274 kfree(str);
2275
2276 return r;
2277 }
2278
2279 static int omapfb_init_display(struct omapfb2_device *fbdev,
2280 struct omap_dss_device *dssdev)
2281 {
2282 struct omap_dss_driver *dssdrv = dssdev->driver;
2283 struct omapfb_display_data *d;
2284 int r;
2285
2286 r = dssdrv->enable(dssdev);
2287 if (r) {
2288 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2289 dssdev->name);
2290 return r;
2291 }
2292
2293 d = get_display_data(fbdev, dssdev);
2294
2295 d->fbdev = fbdev;
2296
2297 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2298 u16 w, h;
2299
2300 if (auto_update) {
2301 omapfb_start_auto_update(fbdev, dssdev);
2302 d->update_mode = OMAPFB_AUTO_UPDATE;
2303 } else {
2304 d->update_mode = OMAPFB_MANUAL_UPDATE;
2305 }
2306
2307 if (dssdrv->enable_te) {
2308 r = dssdrv->enable_te(dssdev, 1);
2309 if (r) {
2310 dev_err(fbdev->dev, "Failed to set TE\n");
2311 return r;
2312 }
2313 }
2314
2315 dssdrv->get_resolution(dssdev, &w, &h);
2316 r = dssdrv->update(dssdev, 0, 0, w, h);
2317 if (r) {
2318 dev_err(fbdev->dev,
2319 "Failed to update display\n");
2320 return r;
2321 }
2322 } else {
2323 d->update_mode = OMAPFB_AUTO_UPDATE;
2324 }
2325
2326 return 0;
2327 }
2328
2329 static int omapfb_probe(struct platform_device *pdev)
2330 {
2331 struct omapfb2_device *fbdev = NULL;
2332 int r = 0;
2333 int i;
2334 struct omap_overlay *ovl;
2335 struct omap_dss_device *def_display;
2336 struct omap_dss_device *dssdev;
2337
2338 DBG("omapfb_probe\n");
2339
2340 if (pdev->num_resources != 0) {
2341 dev_err(&pdev->dev, "probed for an unknown device\n");
2342 r = -ENODEV;
2343 goto err0;
2344 }
2345
2346 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2347 if (fbdev == NULL) {
2348 r = -ENOMEM;
2349 goto err0;
2350 }
2351
2352 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2353 * available for OMAP2 and OMAP3
2354 */
2355 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2356 def_vrfb = 0;
2357 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2358 "ignoring the module parameter vrfb=y\n");
2359 }
2360
2361
2362 mutex_init(&fbdev->mtx);
2363
2364 fbdev->dev = &pdev->dev;
2365 platform_set_drvdata(pdev, fbdev);
2366
2367 r = 0;
2368 fbdev->num_displays = 0;
2369 dssdev = NULL;
2370 for_each_dss_dev(dssdev) {
2371 struct omapfb_display_data *d;
2372
2373 omap_dss_get_device(dssdev);
2374
2375 if (!dssdev->driver) {
2376 dev_err(&pdev->dev, "no driver for display\n");
2377 r = -ENODEV;
2378 }
2379
2380 d = &fbdev->displays[fbdev->num_displays++];
2381 d->dssdev = dssdev;
2382 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2383 d->update_mode = OMAPFB_MANUAL_UPDATE;
2384 else
2385 d->update_mode = OMAPFB_AUTO_UPDATE;
2386 }
2387
2388 if (r)
2389 goto cleanup;
2390
2391 if (fbdev->num_displays == 0) {
2392 dev_err(&pdev->dev, "no displays\n");
2393 r = -EINVAL;
2394 goto cleanup;
2395 }
2396
2397 fbdev->num_overlays = omap_dss_get_num_overlays();
2398 for (i = 0; i < fbdev->num_overlays; i++)
2399 fbdev->overlays[i] = omap_dss_get_overlay(i);
2400
2401 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2402 for (i = 0; i < fbdev->num_managers; i++)
2403 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2404
2405 if (def_mode && strlen(def_mode) > 0) {
2406 if (omapfb_parse_def_modes(fbdev))
2407 dev_warn(&pdev->dev, "cannot parse default modes\n");
2408 }
2409
2410 r = omapfb_create_framebuffers(fbdev);
2411 if (r)
2412 goto cleanup;
2413
2414 for (i = 0; i < fbdev->num_managers; i++) {
2415 struct omap_overlay_manager *mgr;
2416 mgr = fbdev->managers[i];
2417 r = mgr->apply(mgr);
2418 if (r)
2419 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2420 }
2421
2422 DBG("mgr->apply'ed\n");
2423
2424 /* gfx overlay should be the default one. find a display
2425 * connected to that, and use it as default display */
2426 ovl = omap_dss_get_overlay(0);
2427 if (ovl->manager && ovl->manager->device) {
2428 def_display = ovl->manager->device;
2429 } else {
2430 dev_warn(&pdev->dev, "cannot find default display\n");
2431 def_display = NULL;
2432 }
2433
2434 if (def_display) {
2435 r = omapfb_init_display(fbdev, def_display);
2436 if (r) {
2437 dev_err(fbdev->dev,
2438 "failed to initialize default "
2439 "display\n");
2440 goto cleanup;
2441 }
2442 }
2443
2444 DBG("create sysfs for fbs\n");
2445 r = omapfb_create_sysfs(fbdev);
2446 if (r) {
2447 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2448 goto cleanup;
2449 }
2450
2451 return 0;
2452
2453 cleanup:
2454 omapfb_free_resources(fbdev);
2455 err0:
2456 dev_err(&pdev->dev, "failed to setup omapfb\n");
2457 return r;
2458 }
2459
2460 static int omapfb_remove(struct platform_device *pdev)
2461 {
2462 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2463
2464 /* FIXME: wait till completion of pending events */
2465
2466 omapfb_remove_sysfs(fbdev);
2467
2468 omapfb_free_resources(fbdev);
2469
2470 return 0;
2471 }
2472
2473 static struct platform_driver omapfb_driver = {
2474 .probe = omapfb_probe,
2475 .remove = omapfb_remove,
2476 .driver = {
2477 .name = "omapfb",
2478 .owner = THIS_MODULE,
2479 },
2480 };
2481
2482 static int __init omapfb_init(void)
2483 {
2484 DBG("omapfb_init\n");
2485
2486 if (platform_driver_register(&omapfb_driver)) {
2487 printk(KERN_ERR "failed to register omapfb driver\n");
2488 return -ENODEV;
2489 }
2490
2491 return 0;
2492 }
2493
2494 static void __exit omapfb_exit(void)
2495 {
2496 DBG("omapfb_exit\n");
2497 platform_driver_unregister(&omapfb_driver);
2498 }
2499
2500 module_param_named(mode, def_mode, charp, 0);
2501 module_param_named(vram, def_vram, charp, 0);
2502 module_param_named(rotate, def_rotate, int, 0);
2503 module_param_named(vrfb, def_vrfb, bool, 0);
2504 module_param_named(mirror, def_mirror, bool, 0);
2505
2506 /* late_initcall to let panel/ctrl drivers loaded first.
2507 * I guess better option would be a more dynamic approach,
2508 * so that omapfb reacts to new panels when they are loaded */
2509 late_initcall(omapfb_init);
2510 /*module_init(omapfb_init);*/
2511 module_exit(omapfb_exit);
2512
2513 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2514 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2515 MODULE_LICENSE("GPL v2");
linux-next