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
draw_pixel(struct fb_info * fbi,int x,int y,unsigned color)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
fill_fb(struct fb_info * fbi)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
omapfb_get_vrfb_offset(const struct omapfb_info * ofbi,int rot)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
omapfb_get_region_rot_paddr(const struct omapfb_info * ofbi,int rot)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
omapfb_get_region_paddr(const struct omapfb_info * ofbi)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
omapfb_get_region_vaddr(const struct omapfb_info * ofbi)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
cmp_var_to_colormode(struct fb_var_screeninfo * var,struct omapfb_colormode * color)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
assign_colormode_to_var(struct fb_var_screeninfo * var,struct omapfb_colormode * color)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
fb_mode_to_dss_mode(struct fb_var_screeninfo * var,enum omap_color_mode * mode)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
check_fb_res_bounds(struct fb_var_screeninfo * var)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
shrink_height(unsigned long max_frame_size,struct fb_var_screeninfo * var)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
shrink_width(unsigned long max_frame_size,struct fb_var_screeninfo * var)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
check_vrfb_fb_size(unsigned long region_size,const struct fb_var_screeninfo * var)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
check_fb_size(const struct omapfb_info * ofbi,struct fb_var_screeninfo * var)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 */
setup_vrfb_rotation(struct fb_info * fbi)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
dss_mode_to_fb_mode(enum omap_color_mode dssmode,struct fb_var_screeninfo * var)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
set_fb_fix(struct fb_info * fbi)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 */
check_fb_var(struct fb_info * fbi,struct fb_var_screeninfo * var)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 */
omapfb_open(struct fb_info * fbi,int user)757 static int omapfb_open(struct fb_info *fbi, int user)
758 {
759 return 0;
760 }
761
omapfb_release(struct fb_info * fbi,int user)762 static int omapfb_release(struct fb_info *fbi, int user)
763 {
764 return 0;
765 }
766
calc_rotation_offset_dma(const struct fb_var_screeninfo * var,const struct fb_fix_screeninfo * fix,int rotation)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
calc_rotation_offset_vrfb(const struct fb_var_screeninfo * var,const struct fb_fix_screeninfo * fix,int rotation)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
omapfb_calc_addr(const struct omapfb_info * ofbi,const struct fb_var_screeninfo * var,const struct fb_fix_screeninfo * fix,int rotation,u32 * paddr)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 */
omapfb_setup_overlay(struct fb_info * fbi,struct omap_overlay * ovl,u16 posx,u16 posy,u16 outw,u16 outh)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 */
omapfb_apply_changes(struct fb_info * fbi,int init)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 struct omap_overlay_info info;
974 ovl->get_overlay_info(ovl, &info);
975 outw = info.out_width;
976 outh = info.out_height;
977 }
978
979 if (init) {
980 posx = 0;
981 posy = 0;
982 } else {
983 struct omap_overlay_info info;
984 ovl->get_overlay_info(ovl, &info);
985 posx = info.pos_x;
986 posy = info.pos_y;
987 }
988
989 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
990 if (r)
991 goto err;
992
993 if (!init && ovl->manager)
994 ovl->manager->apply(ovl->manager);
995 }
996 return 0;
997 err:
998 DBG("apply_changes failed\n");
999 return r;
1000 }
1001
1002 /* checks var and eventually tweaks it to something supported,
1003 * DO NOT MODIFY PAR */
omapfb_check_var(struct fb_var_screeninfo * var,struct fb_info * fbi)1004 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1005 {
1006 struct omapfb_info *ofbi = FB2OFB(fbi);
1007 int r;
1008
1009 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1010
1011 omapfb_get_mem_region(ofbi->region);
1012
1013 r = check_fb_var(fbi, var);
1014
1015 omapfb_put_mem_region(ofbi->region);
1016
1017 return r;
1018 }
1019
1020 /* set the video mode according to info->var */
omapfb_set_par(struct fb_info * fbi)1021 static int omapfb_set_par(struct fb_info *fbi)
1022 {
1023 struct omapfb_info *ofbi = FB2OFB(fbi);
1024 int r;
1025
1026 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1027
1028 omapfb_get_mem_region(ofbi->region);
1029
1030 set_fb_fix(fbi);
1031
1032 r = setup_vrfb_rotation(fbi);
1033 if (r)
1034 goto out;
1035
1036 r = omapfb_apply_changes(fbi, 0);
1037
1038 out:
1039 omapfb_put_mem_region(ofbi->region);
1040
1041 return r;
1042 }
1043
omapfb_pan_display(struct fb_var_screeninfo * var,struct fb_info * fbi)1044 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1045 struct fb_info *fbi)
1046 {
1047 struct omapfb_info *ofbi = FB2OFB(fbi);
1048 struct fb_var_screeninfo new_var;
1049 int r;
1050
1051 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1052
1053 if (var->xoffset == fbi->var.xoffset &&
1054 var->yoffset == fbi->var.yoffset)
1055 return 0;
1056
1057 new_var = fbi->var;
1058 new_var.xoffset = var->xoffset;
1059 new_var.yoffset = var->yoffset;
1060
1061 fbi->var = new_var;
1062
1063 omapfb_get_mem_region(ofbi->region);
1064
1065 r = omapfb_apply_changes(fbi, 0);
1066
1067 omapfb_put_mem_region(ofbi->region);
1068
1069 return r;
1070 }
1071
mmap_user_open(struct vm_area_struct * vma)1072 static void mmap_user_open(struct vm_area_struct *vma)
1073 {
1074 struct omapfb2_mem_region *rg = vma->vm_private_data;
1075
1076 omapfb_get_mem_region(rg);
1077 atomic_inc(&rg->map_count);
1078 omapfb_put_mem_region(rg);
1079 }
1080
mmap_user_close(struct vm_area_struct * vma)1081 static void mmap_user_close(struct vm_area_struct *vma)
1082 {
1083 struct omapfb2_mem_region *rg = vma->vm_private_data;
1084
1085 omapfb_get_mem_region(rg);
1086 atomic_dec(&rg->map_count);
1087 omapfb_put_mem_region(rg);
1088 }
1089
1090 static struct vm_operations_struct mmap_user_ops = {
1091 .open = mmap_user_open,
1092 .close = mmap_user_close,
1093 };
1094
omapfb_mmap(struct fb_info * fbi,struct vm_area_struct * vma)1095 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1096 {
1097 struct omapfb_info *ofbi = FB2OFB(fbi);
1098 struct fb_fix_screeninfo *fix = &fbi->fix;
1099 struct omapfb2_mem_region *rg;
1100 unsigned long off;
1101 unsigned long start;
1102 u32 len;
1103 int r = -EINVAL;
1104
1105 if (vma->vm_end - vma->vm_start == 0)
1106 return 0;
1107 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1108 return -EINVAL;
1109 off = vma->vm_pgoff << PAGE_SHIFT;
1110
1111 rg = omapfb_get_mem_region(ofbi->region);
1112
1113 start = omapfb_get_region_paddr(ofbi);
1114 len = fix->smem_len;
1115 if (off >= len)
1116 goto error;
1117 if ((vma->vm_end - vma->vm_start + off) > len)
1118 goto error;
1119
1120 off += start;
1121
1122 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1123
1124 vma->vm_pgoff = off >> PAGE_SHIFT;
1125 vma->vm_flags |= VM_IO | VM_RESERVED;
1126 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1127 vma->vm_ops = &mmap_user_ops;
1128 vma->vm_private_data = rg;
1129 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1130 vma->vm_end - vma->vm_start,
1131 vma->vm_page_prot)) {
1132 r = -EAGAIN;
1133 goto error;
1134 }
1135
1136 /* vm_ops.open won't be called for mmap itself. */
1137 atomic_inc(&rg->map_count);
1138
1139 omapfb_put_mem_region(rg);
1140
1141 return 0;
1142
1143 error:
1144 omapfb_put_mem_region(ofbi->region);
1145
1146 return r;
1147 }
1148
1149 /* Store a single color palette entry into a pseudo palette or the hardware
1150 * palette if one is available. For now we support only 16bpp and thus store
1151 * the entry only to the pseudo palette.
1152 */
_setcolreg(struct fb_info * fbi,u_int regno,u_int red,u_int green,u_int blue,u_int transp,int update_hw_pal)1153 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1154 u_int blue, u_int transp, int update_hw_pal)
1155 {
1156 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1157 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1158 struct fb_var_screeninfo *var = &fbi->var;
1159 int r = 0;
1160
1161 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1162
1163 /*switch (plane->color_mode) {*/
1164 switch (mode) {
1165 case OMAPFB_COLOR_YUV422:
1166 case OMAPFB_COLOR_YUV420:
1167 case OMAPFB_COLOR_YUY422:
1168 r = -EINVAL;
1169 break;
1170 case OMAPFB_COLOR_CLUT_8BPP:
1171 case OMAPFB_COLOR_CLUT_4BPP:
1172 case OMAPFB_COLOR_CLUT_2BPP:
1173 case OMAPFB_COLOR_CLUT_1BPP:
1174 /*
1175 if (fbdev->ctrl->setcolreg)
1176 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1177 transp, update_hw_pal);
1178 */
1179 /* Fallthrough */
1180 r = -EINVAL;
1181 break;
1182 case OMAPFB_COLOR_RGB565:
1183 case OMAPFB_COLOR_RGB444:
1184 case OMAPFB_COLOR_RGB24P:
1185 case OMAPFB_COLOR_RGB24U:
1186 if (r != 0)
1187 break;
1188
1189 if (regno < 16) {
1190 u16 pal;
1191 pal = ((red >> (16 - var->red.length)) <<
1192 var->red.offset) |
1193 ((green >> (16 - var->green.length)) <<
1194 var->green.offset) |
1195 (blue >> (16 - var->blue.length));
1196 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1197 }
1198 break;
1199 default:
1200 BUG();
1201 }
1202 return r;
1203 }
1204
omapfb_setcolreg(u_int regno,u_int red,u_int green,u_int blue,u_int transp,struct fb_info * info)1205 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1206 u_int transp, struct fb_info *info)
1207 {
1208 DBG("setcolreg\n");
1209
1210 return _setcolreg(info, regno, red, green, blue, transp, 1);
1211 }
1212
omapfb_setcmap(struct fb_cmap * cmap,struct fb_info * info)1213 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1214 {
1215 int count, index, r;
1216 u16 *red, *green, *blue, *transp;
1217 u16 trans = 0xffff;
1218
1219 DBG("setcmap\n");
1220
1221 red = cmap->red;
1222 green = cmap->green;
1223 blue = cmap->blue;
1224 transp = cmap->transp;
1225 index = cmap->start;
1226
1227 for (count = 0; count < cmap->len; count++) {
1228 if (transp)
1229 trans = *transp++;
1230 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1231 count == cmap->len - 1);
1232 if (r != 0)
1233 return r;
1234 }
1235
1236 return 0;
1237 }
1238
omapfb_blank(int blank,struct fb_info * fbi)1239 static int omapfb_blank(int blank, struct fb_info *fbi)
1240 {
1241 struct omapfb_info *ofbi = FB2OFB(fbi);
1242 struct omapfb2_device *fbdev = ofbi->fbdev;
1243 struct omap_dss_device *display = fb2display(fbi);
1244 struct omapfb_display_data *d;
1245 int r = 0;
1246
1247 if (!display)
1248 return -EINVAL;
1249
1250 omapfb_lock(fbdev);
1251
1252 d = get_display_data(fbdev, display);
1253
1254 switch (blank) {
1255 case FB_BLANK_UNBLANK:
1256 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1257 goto exit;
1258
1259 if (display->driver->resume)
1260 r = display->driver->resume(display);
1261
1262 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1263 d->update_mode == OMAPFB_AUTO_UPDATE &&
1264 !d->auto_update_work_enabled)
1265 omapfb_start_auto_update(fbdev, display);
1266
1267 break;
1268
1269 case FB_BLANK_NORMAL:
1270 /* FB_BLANK_NORMAL could be implemented.
1271 * Needs DSS additions. */
1272 case FB_BLANK_VSYNC_SUSPEND:
1273 case FB_BLANK_HSYNC_SUSPEND:
1274 case FB_BLANK_POWERDOWN:
1275 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1276 goto exit;
1277
1278 if (d->auto_update_work_enabled)
1279 omapfb_stop_auto_update(fbdev, display);
1280
1281 if (display->driver->suspend)
1282 r = display->driver->suspend(display);
1283
1284 break;
1285
1286 default:
1287 r = -EINVAL;
1288 }
1289
1290 exit:
1291 omapfb_unlock(fbdev);
1292
1293 return r;
1294 }
1295
1296 #if 0
1297 /* XXX fb_read and fb_write are needed for VRFB */
1298 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1299 size_t count, loff_t *ppos)
1300 {
1301 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1302 /* XXX needed for VRFB */
1303 return count;
1304 }
1305 #endif
1306
1307 static struct fb_ops omapfb_ops = {
1308 .owner = THIS_MODULE,
1309 .fb_open = omapfb_open,
1310 .fb_release = omapfb_release,
1311 .fb_fillrect = cfb_fillrect,
1312 .fb_copyarea = cfb_copyarea,
1313 .fb_imageblit = cfb_imageblit,
1314 .fb_blank = omapfb_blank,
1315 .fb_ioctl = omapfb_ioctl,
1316 .fb_check_var = omapfb_check_var,
1317 .fb_set_par = omapfb_set_par,
1318 .fb_pan_display = omapfb_pan_display,
1319 .fb_mmap = omapfb_mmap,
1320 .fb_setcolreg = omapfb_setcolreg,
1321 .fb_setcmap = omapfb_setcmap,
1322 /*.fb_write = omapfb_write,*/
1323 };
1324
omapfb_free_fbmem(struct fb_info * fbi)1325 static void omapfb_free_fbmem(struct fb_info *fbi)
1326 {
1327 struct omapfb_info *ofbi = FB2OFB(fbi);
1328 struct omapfb2_device *fbdev = ofbi->fbdev;
1329 struct omapfb2_mem_region *rg;
1330
1331 rg = ofbi->region;
1332
1333 WARN_ON(atomic_read(&rg->map_count));
1334
1335 if (rg->paddr)
1336 if (omap_vram_free(rg->paddr, rg->size))
1337 dev_err(fbdev->dev, "VRAM FREE failed\n");
1338
1339 if (rg->vaddr)
1340 iounmap(rg->vaddr);
1341
1342 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1343 /* unmap the 0 angle rotation */
1344 if (rg->vrfb.vaddr[0]) {
1345 iounmap(rg->vrfb.vaddr[0]);
1346 omap_vrfb_release_ctx(&rg->vrfb);
1347 rg->vrfb.vaddr[0] = NULL;
1348 }
1349 }
1350
1351 rg->vaddr = NULL;
1352 rg->paddr = 0;
1353 rg->alloc = 0;
1354 rg->size = 0;
1355 }
1356
clear_fb_info(struct fb_info * fbi)1357 static void clear_fb_info(struct fb_info *fbi)
1358 {
1359 memset(&fbi->var, 0, sizeof(fbi->var));
1360 memset(&fbi->fix, 0, sizeof(fbi->fix));
1361 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1362 }
1363
omapfb_free_all_fbmem(struct omapfb2_device * fbdev)1364 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1365 {
1366 int i;
1367
1368 DBG("free all fbmem\n");
1369
1370 for (i = 0; i < fbdev->num_fbs; i++) {
1371 struct fb_info *fbi = fbdev->fbs[i];
1372 omapfb_free_fbmem(fbi);
1373 clear_fb_info(fbi);
1374 }
1375
1376 return 0;
1377 }
1378
omapfb_alloc_fbmem(struct fb_info * fbi,unsigned long size,unsigned long paddr)1379 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1380 unsigned long paddr)
1381 {
1382 struct omapfb_info *ofbi = FB2OFB(fbi);
1383 struct omapfb2_device *fbdev = ofbi->fbdev;
1384 struct omapfb2_mem_region *rg;
1385 void __iomem *vaddr;
1386 int r;
1387
1388 rg = ofbi->region;
1389
1390 rg->paddr = 0;
1391 rg->vaddr = NULL;
1392 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1393 rg->size = 0;
1394 rg->type = 0;
1395 rg->alloc = false;
1396 rg->map = false;
1397
1398 size = PAGE_ALIGN(size);
1399
1400 if (!paddr) {
1401 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1402 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1403 } else {
1404 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1405 ofbi->id);
1406 r = omap_vram_reserve(paddr, size);
1407 }
1408
1409 if (r) {
1410 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1411 return -ENOMEM;
1412 }
1413
1414 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1415 vaddr = ioremap_wc(paddr, size);
1416
1417 if (!vaddr) {
1418 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1419 omap_vram_free(paddr, size);
1420 return -ENOMEM;
1421 }
1422
1423 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1424 } else {
1425 r = omap_vrfb_request_ctx(&rg->vrfb);
1426 if (r) {
1427 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1428 return r;
1429 }
1430
1431 vaddr = NULL;
1432 }
1433
1434 rg->paddr = paddr;
1435 rg->vaddr = vaddr;
1436 rg->size = size;
1437 rg->alloc = 1;
1438
1439 return 0;
1440 }
1441
1442 /* allocate fbmem using display resolution as reference */
omapfb_alloc_fbmem_display(struct fb_info * fbi,unsigned long size,unsigned long paddr)1443 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1444 unsigned long paddr)
1445 {
1446 struct omapfb_info *ofbi = FB2OFB(fbi);
1447 struct omapfb2_device *fbdev = ofbi->fbdev;
1448 struct omap_dss_device *display;
1449 int bytespp;
1450
1451 display = fb2display(fbi);
1452
1453 if (!display)
1454 return 0;
1455
1456 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1457 case 16:
1458 bytespp = 2;
1459 break;
1460 case 24:
1461 bytespp = 4;
1462 break;
1463 default:
1464 bytespp = 4;
1465 break;
1466 }
1467
1468 if (!size) {
1469 u16 w, h;
1470
1471 display->driver->get_resolution(display, &w, &h);
1472
1473 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1474 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1475 omap_vrfb_min_phys_size(h, w, bytespp));
1476
1477 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1478 w * h * bytespp, size);
1479 } else {
1480 size = w * h * bytespp;
1481 }
1482 }
1483
1484 if (!size)
1485 return 0;
1486
1487 return omapfb_alloc_fbmem(fbi, size, paddr);
1488 }
1489
fb_format_to_dss_mode(enum omapfb_color_format fmt)1490 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1491 {
1492 enum omap_color_mode mode;
1493
1494 switch (fmt) {
1495 case OMAPFB_COLOR_RGB565:
1496 mode = OMAP_DSS_COLOR_RGB16;
1497 break;
1498 case OMAPFB_COLOR_YUV422:
1499 mode = OMAP_DSS_COLOR_YUV2;
1500 break;
1501 case OMAPFB_COLOR_CLUT_8BPP:
1502 mode = OMAP_DSS_COLOR_CLUT8;
1503 break;
1504 case OMAPFB_COLOR_CLUT_4BPP:
1505 mode = OMAP_DSS_COLOR_CLUT4;
1506 break;
1507 case OMAPFB_COLOR_CLUT_2BPP:
1508 mode = OMAP_DSS_COLOR_CLUT2;
1509 break;
1510 case OMAPFB_COLOR_CLUT_1BPP:
1511 mode = OMAP_DSS_COLOR_CLUT1;
1512 break;
1513 case OMAPFB_COLOR_RGB444:
1514 mode = OMAP_DSS_COLOR_RGB12U;
1515 break;
1516 case OMAPFB_COLOR_YUY422:
1517 mode = OMAP_DSS_COLOR_UYVY;
1518 break;
1519 case OMAPFB_COLOR_ARGB16:
1520 mode = OMAP_DSS_COLOR_ARGB16;
1521 break;
1522 case OMAPFB_COLOR_RGB24U:
1523 mode = OMAP_DSS_COLOR_RGB24U;
1524 break;
1525 case OMAPFB_COLOR_RGB24P:
1526 mode = OMAP_DSS_COLOR_RGB24P;
1527 break;
1528 case OMAPFB_COLOR_ARGB32:
1529 mode = OMAP_DSS_COLOR_ARGB32;
1530 break;
1531 case OMAPFB_COLOR_RGBA32:
1532 mode = OMAP_DSS_COLOR_RGBA32;
1533 break;
1534 case OMAPFB_COLOR_RGBX32:
1535 mode = OMAP_DSS_COLOR_RGBX32;
1536 break;
1537 default:
1538 mode = -EINVAL;
1539 }
1540
1541 return mode;
1542 }
1543
omapfb_parse_vram_param(const char * param,int max_entries,unsigned long * sizes,unsigned long * paddrs)1544 static int omapfb_parse_vram_param(const char *param, int max_entries,
1545 unsigned long *sizes, unsigned long *paddrs)
1546 {
1547 int fbnum;
1548 unsigned long size;
1549 unsigned long paddr = 0;
1550 char *p, *start;
1551
1552 start = (char *)param;
1553
1554 while (1) {
1555 p = start;
1556
1557 fbnum = simple_strtoul(p, &p, 10);
1558
1559 if (p == param)
1560 return -EINVAL;
1561
1562 if (*p != ':')
1563 return -EINVAL;
1564
1565 if (fbnum >= max_entries)
1566 return -EINVAL;
1567
1568 size = memparse(p + 1, &p);
1569
1570 if (!size)
1571 return -EINVAL;
1572
1573 paddr = 0;
1574
1575 if (*p == '@') {
1576 paddr = simple_strtoul(p + 1, &p, 16);
1577
1578 if (!paddr)
1579 return -EINVAL;
1580
1581 }
1582
1583 paddrs[fbnum] = paddr;
1584 sizes[fbnum] = size;
1585
1586 if (*p == 0)
1587 break;
1588
1589 if (*p != ',')
1590 return -EINVAL;
1591
1592 ++p;
1593
1594 start = p;
1595 }
1596
1597 return 0;
1598 }
1599
omapfb_allocate_all_fbs(struct omapfb2_device * fbdev)1600 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1601 {
1602 int i, r;
1603 unsigned long vram_sizes[10];
1604 unsigned long vram_paddrs[10];
1605
1606 memset(&vram_sizes, 0, sizeof(vram_sizes));
1607 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1608
1609 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1610 vram_sizes, vram_paddrs)) {
1611 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1612
1613 memset(&vram_sizes, 0, sizeof(vram_sizes));
1614 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1615 }
1616
1617 if (fbdev->dev->platform_data) {
1618 struct omapfb_platform_data *opd;
1619 opd = fbdev->dev->platform_data;
1620 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1621 if (!vram_sizes[i]) {
1622 unsigned long size;
1623 unsigned long paddr;
1624
1625 size = opd->mem_desc.region[i].size;
1626 paddr = opd->mem_desc.region[i].paddr;
1627
1628 vram_sizes[i] = size;
1629 vram_paddrs[i] = paddr;
1630 }
1631 }
1632 }
1633
1634 for (i = 0; i < fbdev->num_fbs; i++) {
1635 /* allocate memory automatically only for fb0, or if
1636 * excplicitly defined with vram or plat data option */
1637 if (i == 0 || vram_sizes[i] != 0) {
1638 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1639 vram_sizes[i], vram_paddrs[i]);
1640
1641 if (r)
1642 return r;
1643 }
1644 }
1645
1646 for (i = 0; i < fbdev->num_fbs; i++) {
1647 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1648 struct omapfb2_mem_region *rg;
1649 rg = ofbi->region;
1650
1651 DBG("region%d phys %08x virt %p size=%lu\n",
1652 i,
1653 rg->paddr,
1654 rg->vaddr,
1655 rg->size);
1656 }
1657
1658 return 0;
1659 }
1660
omapfb_realloc_fbmem(struct fb_info * fbi,unsigned long size,int type)1661 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1662 {
1663 struct omapfb_info *ofbi = FB2OFB(fbi);
1664 struct omapfb2_device *fbdev = ofbi->fbdev;
1665 struct omap_dss_device *display = fb2display(fbi);
1666 struct omapfb2_mem_region *rg = ofbi->region;
1667 unsigned long old_size = rg->size;
1668 unsigned long old_paddr = rg->paddr;
1669 int old_type = rg->type;
1670 int r;
1671
1672 if (type > OMAPFB_MEMTYPE_MAX)
1673 return -EINVAL;
1674
1675 size = PAGE_ALIGN(size);
1676
1677 if (old_size == size && old_type == type)
1678 return 0;
1679
1680 if (display && display->driver->sync)
1681 display->driver->sync(display);
1682
1683 omapfb_free_fbmem(fbi);
1684
1685 if (size == 0) {
1686 clear_fb_info(fbi);
1687 return 0;
1688 }
1689
1690 r = omapfb_alloc_fbmem(fbi, size, 0);
1691
1692 if (r) {
1693 if (old_size)
1694 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1695
1696 if (rg->size == 0)
1697 clear_fb_info(fbi);
1698
1699 return r;
1700 }
1701
1702 if (old_size == size)
1703 return 0;
1704
1705 if (old_size == 0) {
1706 DBG("initializing fb %d\n", ofbi->id);
1707 r = omapfb_fb_init(fbdev, fbi);
1708 if (r) {
1709 DBG("omapfb_fb_init failed\n");
1710 goto err;
1711 }
1712 r = omapfb_apply_changes(fbi, 1);
1713 if (r) {
1714 DBG("omapfb_apply_changes failed\n");
1715 goto err;
1716 }
1717 } else {
1718 struct fb_var_screeninfo new_var;
1719 memcpy(&new_var, &fbi->var, sizeof(new_var));
1720 r = check_fb_var(fbi, &new_var);
1721 if (r)
1722 goto err;
1723 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1724 set_fb_fix(fbi);
1725 r = setup_vrfb_rotation(fbi);
1726 if (r)
1727 goto err;
1728 }
1729
1730 return 0;
1731 err:
1732 omapfb_free_fbmem(fbi);
1733 clear_fb_info(fbi);
1734 return r;
1735 }
1736
omapfb_auto_update_work(struct work_struct * work)1737 static void omapfb_auto_update_work(struct work_struct *work)
1738 {
1739 struct omap_dss_device *dssdev;
1740 struct omap_dss_driver *dssdrv;
1741 struct omapfb_display_data *d;
1742 u16 w, h;
1743 unsigned int freq;
1744 struct omapfb2_device *fbdev;
1745
1746 d = container_of(work, struct omapfb_display_data,
1747 auto_update_work.work);
1748
1749 dssdev = d->dssdev;
1750 dssdrv = dssdev->driver;
1751 fbdev = d->fbdev;
1752
1753 if (!dssdrv || !dssdrv->update)
1754 return;
1755
1756 if (dssdrv->sync)
1757 dssdrv->sync(dssdev);
1758
1759 dssdrv->get_resolution(dssdev, &w, &h);
1760 dssdrv->update(dssdev, 0, 0, w, h);
1761
1762 freq = auto_update_freq;
1763 if (freq == 0)
1764 freq = 20;
1765 queue_delayed_work(fbdev->auto_update_wq,
1766 &d->auto_update_work, HZ / freq);
1767 }
1768
omapfb_start_auto_update(struct omapfb2_device * fbdev,struct omap_dss_device * display)1769 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1770 struct omap_dss_device *display)
1771 {
1772 struct omapfb_display_data *d;
1773
1774 if (fbdev->auto_update_wq == NULL) {
1775 struct workqueue_struct *wq;
1776
1777 wq = create_singlethread_workqueue("omapfb_auto_update");
1778
1779 if (wq == NULL) {
1780 dev_err(fbdev->dev, "Failed to create workqueue for "
1781 "auto-update\n");
1782 return;
1783 }
1784
1785 fbdev->auto_update_wq = wq;
1786 }
1787
1788 d = get_display_data(fbdev, display);
1789
1790 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1791
1792 d->auto_update_work_enabled = true;
1793
1794 omapfb_auto_update_work(&d->auto_update_work.work);
1795 }
1796
omapfb_stop_auto_update(struct omapfb2_device * fbdev,struct omap_dss_device * display)1797 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1798 struct omap_dss_device *display)
1799 {
1800 struct omapfb_display_data *d;
1801
1802 d = get_display_data(fbdev, display);
1803
1804 cancel_delayed_work_sync(&d->auto_update_work);
1805
1806 d->auto_update_work_enabled = false;
1807 }
1808
1809 /* initialize fb_info, var, fix to something sane based on the display */
omapfb_fb_init(struct omapfb2_device * fbdev,struct fb_info * fbi)1810 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1811 {
1812 struct fb_var_screeninfo *var = &fbi->var;
1813 struct omap_dss_device *display = fb2display(fbi);
1814 struct omapfb_info *ofbi = FB2OFB(fbi);
1815 int r = 0;
1816
1817 fbi->fbops = &omapfb_ops;
1818 fbi->flags = FBINFO_FLAG_DEFAULT;
1819 fbi->pseudo_palette = fbdev->pseudo_palette;
1820
1821 if (ofbi->region->size == 0) {
1822 clear_fb_info(fbi);
1823 return 0;
1824 }
1825
1826 var->nonstd = 0;
1827 var->bits_per_pixel = 0;
1828
1829 var->rotate = def_rotate;
1830
1831 /*
1832 * Check if there is a default color format set in the board file,
1833 * and use this format instead the default deducted from the
1834 * display bpp.
1835 */
1836 if (fbdev->dev->platform_data) {
1837 struct omapfb_platform_data *opd;
1838 int id = ofbi->id;
1839
1840 opd = fbdev->dev->platform_data;
1841 if (opd->mem_desc.region[id].format_used) {
1842 enum omap_color_mode mode;
1843 enum omapfb_color_format format;
1844
1845 format = opd->mem_desc.region[id].format;
1846 mode = fb_format_to_dss_mode(format);
1847 if (mode < 0) {
1848 r = mode;
1849 goto err;
1850 }
1851 r = dss_mode_to_fb_mode(mode, var);
1852 if (r < 0)
1853 goto err;
1854 }
1855 }
1856
1857 if (display) {
1858 u16 w, h;
1859 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1860
1861 display->driver->get_resolution(display, &w, &h);
1862
1863 if (rotation == FB_ROTATE_CW ||
1864 rotation == FB_ROTATE_CCW) {
1865 var->xres = h;
1866 var->yres = w;
1867 } else {
1868 var->xres = w;
1869 var->yres = h;
1870 }
1871
1872 var->xres_virtual = var->xres;
1873 var->yres_virtual = var->yres;
1874
1875 if (!var->bits_per_pixel) {
1876 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1877 case 16:
1878 var->bits_per_pixel = 16;
1879 break;
1880 case 24:
1881 var->bits_per_pixel = 32;
1882 break;
1883 default:
1884 dev_err(fbdev->dev, "illegal display "
1885 "bpp\n");
1886 return -EINVAL;
1887 }
1888 }
1889 } else {
1890 /* if there's no display, let's just guess some basic values */
1891 var->xres = 320;
1892 var->yres = 240;
1893 var->xres_virtual = var->xres;
1894 var->yres_virtual = var->yres;
1895 if (!var->bits_per_pixel)
1896 var->bits_per_pixel = 16;
1897 }
1898
1899 r = check_fb_var(fbi, var);
1900 if (r)
1901 goto err;
1902
1903 set_fb_fix(fbi);
1904 r = setup_vrfb_rotation(fbi);
1905 if (r)
1906 goto err;
1907
1908 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1909 if (r)
1910 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1911
1912 err:
1913 return r;
1914 }
1915
fbinfo_cleanup(struct omapfb2_device * fbdev,struct fb_info * fbi)1916 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1917 {
1918 fb_dealloc_cmap(&fbi->cmap);
1919 }
1920
1921
omapfb_free_resources(struct omapfb2_device * fbdev)1922 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1923 {
1924 int i;
1925
1926 DBG("free_resources\n");
1927
1928 if (fbdev == NULL)
1929 return;
1930
1931 for (i = 0; i < fbdev->num_fbs; i++)
1932 unregister_framebuffer(fbdev->fbs[i]);
1933
1934 /* free the reserved fbmem */
1935 omapfb_free_all_fbmem(fbdev);
1936
1937 for (i = 0; i < fbdev->num_fbs; i++) {
1938 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1939 framebuffer_release(fbdev->fbs[i]);
1940 }
1941
1942 for (i = 0; i < fbdev->num_displays; i++) {
1943 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1944
1945 if (fbdev->displays[i].auto_update_work_enabled)
1946 omapfb_stop_auto_update(fbdev, dssdev);
1947
1948 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1949 dssdev->driver->disable(dssdev);
1950
1951 omap_dss_put_device(dssdev);
1952 }
1953
1954 if (fbdev->auto_update_wq != NULL) {
1955 flush_workqueue(fbdev->auto_update_wq);
1956 destroy_workqueue(fbdev->auto_update_wq);
1957 fbdev->auto_update_wq = NULL;
1958 }
1959
1960 dev_set_drvdata(fbdev->dev, NULL);
1961 kfree(fbdev);
1962 }
1963
omapfb_create_framebuffers(struct omapfb2_device * fbdev)1964 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1965 {
1966 int r, i;
1967
1968 fbdev->num_fbs = 0;
1969
1970 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1971
1972 /* allocate fb_infos */
1973 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1974 struct fb_info *fbi;
1975 struct omapfb_info *ofbi;
1976
1977 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1978 fbdev->dev);
1979
1980 if (fbi == NULL) {
1981 dev_err(fbdev->dev,
1982 "unable to allocate memory for plane info\n");
1983 return -ENOMEM;
1984 }
1985
1986 clear_fb_info(fbi);
1987
1988 fbdev->fbs[i] = fbi;
1989
1990 ofbi = FB2OFB(fbi);
1991 ofbi->fbdev = fbdev;
1992 ofbi->id = i;
1993
1994 ofbi->region = &fbdev->regions[i];
1995 ofbi->region->id = i;
1996 init_rwsem(&ofbi->region->lock);
1997
1998 /* assign these early, so that fb alloc can use them */
1999 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
2000 OMAP_DSS_ROT_DMA;
2001 ofbi->mirror = def_mirror;
2002
2003 fbdev->num_fbs++;
2004 }
2005
2006 DBG("fb_infos allocated\n");
2007
2008 /* assign overlays for the fbs */
2009 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
2010 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
2011
2012 ofbi->overlays[0] = fbdev->overlays[i];
2013 ofbi->num_overlays = 1;
2014 }
2015
2016 /* allocate fb memories */
2017 r = omapfb_allocate_all_fbs(fbdev);
2018 if (r) {
2019 dev_err(fbdev->dev, "failed to allocate fbmem\n");
2020 return r;
2021 }
2022
2023 DBG("fbmems allocated\n");
2024
2025 /* setup fb_infos */
2026 for (i = 0; i < fbdev->num_fbs; i++) {
2027 struct fb_info *fbi = fbdev->fbs[i];
2028 struct omapfb_info *ofbi = FB2OFB(fbi);
2029
2030 omapfb_get_mem_region(ofbi->region);
2031 r = omapfb_fb_init(fbdev, fbi);
2032 omapfb_put_mem_region(ofbi->region);
2033
2034 if (r) {
2035 dev_err(fbdev->dev, "failed to setup fb_info\n");
2036 return r;
2037 }
2038 }
2039
2040 DBG("fb_infos initialized\n");
2041
2042 for (i = 0; i < fbdev->num_fbs; i++) {
2043 r = register_framebuffer(fbdev->fbs[i]);
2044 if (r != 0) {
2045 dev_err(fbdev->dev,
2046 "registering framebuffer %d failed\n", i);
2047 return r;
2048 }
2049 }
2050
2051 DBG("framebuffers registered\n");
2052
2053 for (i = 0; i < fbdev->num_fbs; i++) {
2054 struct fb_info *fbi = fbdev->fbs[i];
2055 struct omapfb_info *ofbi = FB2OFB(fbi);
2056
2057 omapfb_get_mem_region(ofbi->region);
2058 r = omapfb_apply_changes(fbi, 1);
2059 omapfb_put_mem_region(ofbi->region);
2060
2061 if (r) {
2062 dev_err(fbdev->dev, "failed to change mode\n");
2063 return r;
2064 }
2065 }
2066
2067 /* Enable fb0 */
2068 if (fbdev->num_fbs > 0) {
2069 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2070
2071 if (ofbi->num_overlays > 0) {
2072 struct omap_overlay *ovl = ofbi->overlays[0];
2073
2074 ovl->manager->apply(ovl->manager);
2075
2076 r = omapfb_overlay_enable(ovl, 1);
2077
2078 if (r) {
2079 dev_err(fbdev->dev,
2080 "failed to enable overlay\n");
2081 return r;
2082 }
2083 }
2084 }
2085
2086 DBG("create_framebuffers done\n");
2087
2088 return 0;
2089 }
2090
omapfb_mode_to_timings(const char * mode_str,struct omap_video_timings * timings,u8 * bpp)2091 static int omapfb_mode_to_timings(const char *mode_str,
2092 struct omap_video_timings *timings, u8 *bpp)
2093 {
2094 struct fb_info *fbi;
2095 struct fb_var_screeninfo *var;
2096 struct fb_ops *fbops;
2097 int r;
2098
2099 #ifdef CONFIG_OMAP2_DSS_VENC
2100 if (strcmp(mode_str, "pal") == 0) {
2101 *timings = omap_dss_pal_timings;
2102 *bpp = 24;
2103 return 0;
2104 } else if (strcmp(mode_str, "ntsc") == 0) {
2105 *timings = omap_dss_ntsc_timings;
2106 *bpp = 24;
2107 return 0;
2108 }
2109 #endif
2110
2111 /* this is quite a hack, but I wanted to use the modedb and for
2112 * that we need fb_info and var, so we create dummy ones */
2113
2114 *bpp = 0;
2115 fbi = NULL;
2116 var = NULL;
2117 fbops = NULL;
2118
2119 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2120 if (fbi == NULL) {
2121 r = -ENOMEM;
2122 goto err;
2123 }
2124
2125 var = kzalloc(sizeof(*var), GFP_KERNEL);
2126 if (var == NULL) {
2127 r = -ENOMEM;
2128 goto err;
2129 }
2130
2131 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2132 if (fbops == NULL) {
2133 r = -ENOMEM;
2134 goto err;
2135 }
2136
2137 fbi->fbops = fbops;
2138
2139 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2140 if (r == 0) {
2141 r = -EINVAL;
2142 goto err;
2143 }
2144
2145 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2146 timings->hbp = var->left_margin;
2147 timings->hfp = var->right_margin;
2148 timings->vbp = var->upper_margin;
2149 timings->vfp = var->lower_margin;
2150 timings->hsw = var->hsync_len;
2151 timings->vsw = var->vsync_len;
2152 timings->x_res = var->xres;
2153 timings->y_res = var->yres;
2154
2155 switch (var->bits_per_pixel) {
2156 case 16:
2157 *bpp = 16;
2158 break;
2159 case 24:
2160 case 32:
2161 default:
2162 *bpp = 24;
2163 break;
2164 }
2165
2166 r = 0;
2167
2168 err:
2169 kfree(fbi);
2170 kfree(var);
2171 kfree(fbops);
2172
2173 return r;
2174 }
2175
omapfb_set_def_mode(struct omapfb2_device * fbdev,struct omap_dss_device * display,char * mode_str)2176 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2177 struct omap_dss_device *display, char *mode_str)
2178 {
2179 int r;
2180 u8 bpp;
2181 struct omap_video_timings timings, temp_timings;
2182 struct omapfb_display_data *d;
2183
2184 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2185 if (r)
2186 return r;
2187
2188 d = get_display_data(fbdev, display);
2189 d->bpp_override = bpp;
2190
2191 if (display->driver->check_timings) {
2192 r = display->driver->check_timings(display, &timings);
2193 if (r)
2194 return r;
2195 } else {
2196 /* If check_timings is not present compare xres and yres */
2197 if (display->driver->get_timings) {
2198 display->driver->get_timings(display, &temp_timings);
2199
2200 if (temp_timings.x_res != timings.x_res ||
2201 temp_timings.y_res != timings.y_res)
2202 return -EINVAL;
2203 }
2204 }
2205
2206 if (display->driver->set_timings)
2207 display->driver->set_timings(display, &timings);
2208
2209 return 0;
2210 }
2211
omapfb_get_recommended_bpp(struct omapfb2_device * fbdev,struct omap_dss_device * dssdev)2212 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2213 struct omap_dss_device *dssdev)
2214 {
2215 struct omapfb_display_data *d;
2216
2217 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2218
2219 d = get_display_data(fbdev, dssdev);
2220
2221 if (d->bpp_override != 0)
2222 return d->bpp_override;
2223
2224 return dssdev->driver->get_recommended_bpp(dssdev);
2225 }
2226
omapfb_parse_def_modes(struct omapfb2_device * fbdev)2227 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2228 {
2229 char *str, *options, *this_opt;
2230 int r = 0;
2231
2232 str = kstrdup(def_mode, GFP_KERNEL);
2233 if (!str)
2234 return -ENOMEM;
2235 options = str;
2236
2237 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2238 char *p, *display_str, *mode_str;
2239 struct omap_dss_device *display;
2240 int i;
2241
2242 p = strchr(this_opt, ':');
2243 if (!p) {
2244 r = -EINVAL;
2245 break;
2246 }
2247
2248 *p = 0;
2249 display_str = this_opt;
2250 mode_str = p + 1;
2251
2252 display = NULL;
2253 for (i = 0; i < fbdev->num_displays; ++i) {
2254 if (strcmp(fbdev->displays[i].dssdev->name,
2255 display_str) == 0) {
2256 display = fbdev->displays[i].dssdev;
2257 break;
2258 }
2259 }
2260
2261 if (!display) {
2262 r = -EINVAL;
2263 break;
2264 }
2265
2266 r = omapfb_set_def_mode(fbdev, display, mode_str);
2267 if (r)
2268 break;
2269 }
2270
2271 kfree(str);
2272
2273 return r;
2274 }
2275
fb_videomode_to_omap_timings(struct fb_videomode * m,struct omap_video_timings * t)2276 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2277 struct omap_video_timings *t)
2278 {
2279 t->x_res = m->xres;
2280 t->y_res = m->yres;
2281 t->pixel_clock = PICOS2KHZ(m->pixclock);
2282 t->hsw = m->hsync_len;
2283 t->hfp = m->right_margin;
2284 t->hbp = m->left_margin;
2285 t->vsw = m->vsync_len;
2286 t->vfp = m->lower_margin;
2287 t->vbp = m->upper_margin;
2288 }
2289
omapfb_find_best_mode(struct omap_dss_device * display,struct omap_video_timings * timings)2290 static int omapfb_find_best_mode(struct omap_dss_device *display,
2291 struct omap_video_timings *timings)
2292 {
2293 struct fb_monspecs *specs;
2294 u8 *edid;
2295 int r, i, best_xres, best_idx, len;
2296
2297 if (!display->driver->read_edid)
2298 return -ENODEV;
2299
2300 len = 0x80 * 2;
2301 edid = kmalloc(len, GFP_KERNEL);
2302
2303 r = display->driver->read_edid(display, edid, len);
2304 if (r < 0)
2305 goto err1;
2306
2307 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2308
2309 fb_edid_to_monspecs(edid, specs);
2310
2311 if (edid[126] > 0)
2312 fb_edid_add_monspecs(edid + 0x80, specs);
2313
2314 best_xres = 0;
2315 best_idx = -1;
2316
2317 for (i = 0; i < specs->modedb_len; ++i) {
2318 struct fb_videomode *m;
2319 struct omap_video_timings t;
2320
2321 m = &specs->modedb[i];
2322
2323 if (m->pixclock == 0)
2324 continue;
2325
2326 /* skip repeated pixel modes */
2327 if (m->xres == 2880 || m->xres == 1440)
2328 continue;
2329
2330 fb_videomode_to_omap_timings(m, &t);
2331
2332 r = display->driver->check_timings(display, &t);
2333 if (r == 0 && best_xres < m->xres) {
2334 best_xres = m->xres;
2335 best_idx = i;
2336 }
2337 }
2338
2339 if (best_xres == 0) {
2340 r = -ENOENT;
2341 goto err2;
2342 }
2343
2344 fb_videomode_to_omap_timings(&specs->modedb[best_idx], timings);
2345
2346 r = 0;
2347
2348 err2:
2349 fb_destroy_modedb(specs->modedb);
2350 kfree(specs);
2351 err1:
2352 kfree(edid);
2353
2354 return r;
2355 }
2356
omapfb_init_display(struct omapfb2_device * fbdev,struct omap_dss_device * dssdev)2357 static int omapfb_init_display(struct omapfb2_device *fbdev,
2358 struct omap_dss_device *dssdev)
2359 {
2360 struct omap_dss_driver *dssdrv = dssdev->driver;
2361 struct omapfb_display_data *d;
2362 int r;
2363
2364 r = dssdrv->enable(dssdev);
2365 if (r) {
2366 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2367 dssdev->name);
2368 return r;
2369 }
2370
2371 d = get_display_data(fbdev, dssdev);
2372
2373 d->fbdev = fbdev;
2374
2375 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2376 u16 w, h;
2377
2378 if (auto_update) {
2379 omapfb_start_auto_update(fbdev, dssdev);
2380 d->update_mode = OMAPFB_AUTO_UPDATE;
2381 } else {
2382 d->update_mode = OMAPFB_MANUAL_UPDATE;
2383 }
2384
2385 if (dssdrv->enable_te) {
2386 r = dssdrv->enable_te(dssdev, 1);
2387 if (r) {
2388 dev_err(fbdev->dev, "Failed to set TE\n");
2389 return r;
2390 }
2391 }
2392
2393 dssdrv->get_resolution(dssdev, &w, &h);
2394 r = dssdrv->update(dssdev, 0, 0, w, h);
2395 if (r) {
2396 dev_err(fbdev->dev,
2397 "Failed to update display\n");
2398 return r;
2399 }
2400 } else {
2401 d->update_mode = OMAPFB_AUTO_UPDATE;
2402 }
2403
2404 return 0;
2405 }
2406
omapfb_probe(struct platform_device * pdev)2407 static int omapfb_probe(struct platform_device *pdev)
2408 {
2409 struct omapfb2_device *fbdev = NULL;
2410 int r = 0;
2411 int i;
2412 struct omap_overlay *ovl;
2413 struct omap_dss_device *def_display;
2414 struct omap_dss_device *dssdev;
2415
2416 DBG("omapfb_probe\n");
2417
2418 if (pdev->num_resources != 0) {
2419 dev_err(&pdev->dev, "probed for an unknown device\n");
2420 r = -ENODEV;
2421 goto err0;
2422 }
2423
2424 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2425 if (fbdev == NULL) {
2426 r = -ENOMEM;
2427 goto err0;
2428 }
2429
2430 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2431 * available for OMAP2 and OMAP3
2432 */
2433 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2434 def_vrfb = 0;
2435 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2436 "ignoring the module parameter vrfb=y\n");
2437 }
2438
2439
2440 mutex_init(&fbdev->mtx);
2441
2442 fbdev->dev = &pdev->dev;
2443 platform_set_drvdata(pdev, fbdev);
2444
2445 r = 0;
2446 fbdev->num_displays = 0;
2447 dssdev = NULL;
2448 for_each_dss_dev(dssdev) {
2449 struct omapfb_display_data *d;
2450
2451 omap_dss_get_device(dssdev);
2452
2453 if (!dssdev->driver) {
2454 dev_warn(&pdev->dev, "no driver for display: %s\n",
2455 dssdev->name);
2456 omap_dss_put_device(dssdev);
2457 continue;
2458 }
2459
2460 d = &fbdev->displays[fbdev->num_displays++];
2461 d->dssdev = dssdev;
2462 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2463 d->update_mode = OMAPFB_MANUAL_UPDATE;
2464 else
2465 d->update_mode = OMAPFB_AUTO_UPDATE;
2466 }
2467
2468 if (r)
2469 goto cleanup;
2470
2471 if (fbdev->num_displays == 0) {
2472 dev_err(&pdev->dev, "no displays\n");
2473 r = -EINVAL;
2474 goto cleanup;
2475 }
2476
2477 fbdev->num_overlays = omap_dss_get_num_overlays();
2478 for (i = 0; i < fbdev->num_overlays; i++)
2479 fbdev->overlays[i] = omap_dss_get_overlay(i);
2480
2481 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2482 for (i = 0; i < fbdev->num_managers; i++)
2483 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2484
2485 /* gfx overlay should be the default one. find a display
2486 * connected to that, and use it as default display */
2487 ovl = omap_dss_get_overlay(0);
2488 if (ovl->manager && ovl->manager->device) {
2489 def_display = ovl->manager->device;
2490 } else {
2491 dev_warn(&pdev->dev, "cannot find default display\n");
2492 def_display = NULL;
2493 }
2494
2495 if (def_mode && strlen(def_mode) > 0) {
2496 if (omapfb_parse_def_modes(fbdev))
2497 dev_warn(&pdev->dev, "cannot parse default modes\n");
2498 } else if (def_display && def_display->driver->set_timings &&
2499 def_display->driver->check_timings) {
2500 struct omap_video_timings t;
2501
2502 r = omapfb_find_best_mode(def_display, &t);
2503
2504 if (r == 0)
2505 def_display->driver->set_timings(def_display, &t);
2506 }
2507
2508 r = omapfb_create_framebuffers(fbdev);
2509 if (r)
2510 goto cleanup;
2511
2512 for (i = 0; i < fbdev->num_managers; i++) {
2513 struct omap_overlay_manager *mgr;
2514 mgr = fbdev->managers[i];
2515 r = mgr->apply(mgr);
2516 if (r)
2517 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2518 }
2519
2520 DBG("mgr->apply'ed\n");
2521
2522 if (def_display) {
2523 r = omapfb_init_display(fbdev, def_display);
2524 if (r) {
2525 dev_err(fbdev->dev,
2526 "failed to initialize default "
2527 "display\n");
2528 goto cleanup;
2529 }
2530 }
2531
2532 DBG("create sysfs for fbs\n");
2533 r = omapfb_create_sysfs(fbdev);
2534 if (r) {
2535 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2536 goto cleanup;
2537 }
2538
2539 return 0;
2540
2541 cleanup:
2542 omapfb_free_resources(fbdev);
2543 err0:
2544 dev_err(&pdev->dev, "failed to setup omapfb\n");
2545 return r;
2546 }
2547
omapfb_remove(struct platform_device * pdev)2548 static int omapfb_remove(struct platform_device *pdev)
2549 {
2550 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2551
2552 /* FIXME: wait till completion of pending events */
2553
2554 omapfb_remove_sysfs(fbdev);
2555
2556 omapfb_free_resources(fbdev);
2557
2558 return 0;
2559 }
2560
2561 static struct platform_driver omapfb_driver = {
2562 .probe = omapfb_probe,
2563 .remove = omapfb_remove,
2564 .driver = {
2565 .name = "omapfb",
2566 .owner = THIS_MODULE,
2567 },
2568 };
2569
omapfb_init(void)2570 static int __init omapfb_init(void)
2571 {
2572 DBG("omapfb_init\n");
2573
2574 if (platform_driver_register(&omapfb_driver)) {
2575 printk(KERN_ERR "failed to register omapfb driver\n");
2576 return -ENODEV;
2577 }
2578
2579 return 0;
2580 }
2581
omapfb_exit(void)2582 static void __exit omapfb_exit(void)
2583 {
2584 DBG("omapfb_exit\n");
2585 platform_driver_unregister(&omapfb_driver);
2586 }
2587
2588 module_param_named(mode, def_mode, charp, 0);
2589 module_param_named(vram, def_vram, charp, 0);
2590 module_param_named(rotate, def_rotate, int, 0);
2591 module_param_named(vrfb, def_vrfb, bool, 0);
2592 module_param_named(mirror, def_mirror, bool, 0);
2593
2594 /* late_initcall to let panel/ctrl drivers loaded first.
2595 * I guess better option would be a more dynamic approach,
2596 * so that omapfb reacts to new panels when they are loaded */
2597 late_initcall(omapfb_init);
2598 /*module_init(omapfb_init);*/
2599 module_exit(omapfb_exit);
2600
2601 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2602 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2603 MODULE_LICENSE("GPL v2");
2604