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 */
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 #include <linux/suspend.h>
34 #include <video/omapdss.h>
35 #include <video/omapvrfb.h>
37 #include "omapfb.h"
39 #define MODULE_NAME "omapfb"
41 #define OMAPFB_PLANE_XRES_MIN 8
42 #define OMAPFB_PLANE_YRES_MIN 8
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);
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
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);
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;
74 int r = (color >> 16) & 0xff;
75 int g = (color >> 8) & 0xff;
76 int b = (color >> 0) & 0xff;
78 if (var->bits_per_pixel == 16) {
79 u16 __iomem *p = (u16 __iomem *)addr;
80 p += y * line_len + x;
82 r = r * 32 / 256;
83 g = g * 64 / 256;
84 b = b * 32 / 256;
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;
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 }
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;
109 if (!addr)
110 return;
112 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
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
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;
167 switch (rot) {
168 case FB_ROTATE_UR:
169 offset = 0;
170 break;
171 case FB_ROTATE_CW:
172 offset = vrfb->yoffset;
173 break;
174 case FB_ROTATE_UD:
175 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
176 break;
177 case FB_ROTATE_CCW:
178 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
179 break;
180 default:
181 BUG();
182 return 0;
183 }
185 offset *= vrfb->bytespp;
187 return offset;
188 }
190 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
191 {
192 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
193 return ofbi->region->vrfb.paddr[rot]
194 + omapfb_get_vrfb_offset(ofbi, rot);
195 } else {
196 return ofbi->region->paddr;
197 }
198 }
200 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
201 {
202 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
203 return ofbi->region->vrfb.paddr[0];
204 else
205 return ofbi->region->paddr;
206 }
208 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
209 {
210 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
211 return ofbi->region->vrfb.vaddr[0];
212 else
213 return ofbi->region->vaddr;
214 }
216 static struct omapfb_colormode omapfb_colormodes[] = {
217 {
218 .dssmode = OMAP_DSS_COLOR_UYVY,
219 .bits_per_pixel = 16,
220 .nonstd = OMAPFB_COLOR_YUV422,
221 }, {
222 .dssmode = OMAP_DSS_COLOR_YUV2,
223 .bits_per_pixel = 16,
224 .nonstd = OMAPFB_COLOR_YUY422,
225 }, {
226 .dssmode = OMAP_DSS_COLOR_ARGB16,
227 .bits_per_pixel = 16,
228 .red = { .length = 4, .offset = 8, .msb_right = 0 },
229 .green = { .length = 4, .offset = 4, .msb_right = 0 },
230 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
231 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
232 }, {
233 .dssmode = OMAP_DSS_COLOR_RGB16,
234 .bits_per_pixel = 16,
235 .red = { .length = 5, .offset = 11, .msb_right = 0 },
236 .green = { .length = 6, .offset = 5, .msb_right = 0 },
237 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
238 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
239 }, {
240 .dssmode = OMAP_DSS_COLOR_RGB24P,
241 .bits_per_pixel = 24,
242 .red = { .length = 8, .offset = 16, .msb_right = 0 },
243 .green = { .length = 8, .offset = 8, .msb_right = 0 },
244 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
245 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
246 }, {
247 .dssmode = OMAP_DSS_COLOR_RGB24U,
248 .bits_per_pixel = 32,
249 .red = { .length = 8, .offset = 16, .msb_right = 0 },
250 .green = { .length = 8, .offset = 8, .msb_right = 0 },
251 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
252 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
253 }, {
254 .dssmode = OMAP_DSS_COLOR_ARGB32,
255 .bits_per_pixel = 32,
256 .red = { .length = 8, .offset = 16, .msb_right = 0 },
257 .green = { .length = 8, .offset = 8, .msb_right = 0 },
258 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
259 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
260 }, {
261 .dssmode = OMAP_DSS_COLOR_RGBA32,
262 .bits_per_pixel = 32,
263 .red = { .length = 8, .offset = 24, .msb_right = 0 },
264 .green = { .length = 8, .offset = 16, .msb_right = 0 },
265 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
266 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
267 }, {
268 .dssmode = OMAP_DSS_COLOR_RGBX32,
269 .bits_per_pixel = 32,
270 .red = { .length = 8, .offset = 24, .msb_right = 0 },
271 .green = { .length = 8, .offset = 16, .msb_right = 0 },
272 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
273 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
274 },
275 };
277 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
278 struct omapfb_colormode *color)
279 {
280 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
281 {
282 return f1->length == f2->length &&
283 f1->offset == f2->offset &&
284 f1->msb_right == f2->msb_right;
285 }
287 if (var->bits_per_pixel == 0 ||
288 var->red.length == 0 ||
289 var->blue.length == 0 ||
290 var->green.length == 0)
291 return 0;
293 return var->bits_per_pixel == color->bits_per_pixel &&
294 cmp_component(&var->red, &color->red) &&
295 cmp_component(&var->green, &color->green) &&
296 cmp_component(&var->blue, &color->blue) &&
297 cmp_component(&var->transp, &color->transp);
298 }
300 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
301 struct omapfb_colormode *color)
302 {
303 var->bits_per_pixel = color->bits_per_pixel;
304 var->nonstd = color->nonstd;
305 var->red = color->red;
306 var->green = color->green;
307 var->blue = color->blue;
308 var->transp = color->transp;
309 }
311 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
312 enum omap_color_mode *mode)
313 {
314 enum omap_color_mode dssmode;
315 int i;
317 /* first match with nonstd field */
318 if (var->nonstd) {
319 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
320 struct omapfb_colormode *m = &omapfb_colormodes[i];
321 if (var->nonstd == m->nonstd) {
322 assign_colormode_to_var(var, m);
323 *mode = m->dssmode;
324 return 0;
325 }
326 }
328 return -EINVAL;
329 }
331 /* then try exact match of bpp and colors */
332 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
333 struct omapfb_colormode *m = &omapfb_colormodes[i];
334 if (cmp_var_to_colormode(var, m)) {
335 assign_colormode_to_var(var, m);
336 *mode = m->dssmode;
337 return 0;
338 }
339 }
341 /* match with bpp if user has not filled color fields
342 * properly */
343 switch (var->bits_per_pixel) {
344 case 1:
345 dssmode = OMAP_DSS_COLOR_CLUT1;
346 break;
347 case 2:
348 dssmode = OMAP_DSS_COLOR_CLUT2;
349 break;
350 case 4:
351 dssmode = OMAP_DSS_COLOR_CLUT4;
352 break;
353 case 8:
354 dssmode = OMAP_DSS_COLOR_CLUT8;
355 break;
356 case 12:
357 dssmode = OMAP_DSS_COLOR_RGB12U;
358 break;
359 case 16:
360 dssmode = OMAP_DSS_COLOR_RGB16;
361 break;
362 case 24:
363 dssmode = OMAP_DSS_COLOR_RGB24P;
364 break;
365 case 32:
366 dssmode = OMAP_DSS_COLOR_RGB24U;
367 break;
368 default:
369 return -EINVAL;
370 }
372 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
373 struct omapfb_colormode *m = &omapfb_colormodes[i];
374 if (dssmode == m->dssmode) {
375 assign_colormode_to_var(var, m);
376 *mode = m->dssmode;
377 return 0;
378 }
379 }
381 return -EINVAL;
382 }
384 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
385 {
386 int xres_min = OMAPFB_PLANE_XRES_MIN;
387 int xres_max = 2048;
388 int yres_min = OMAPFB_PLANE_YRES_MIN;
389 int yres_max = 2048;
391 /* XXX: some applications seem to set virtual res to 0. */
392 if (var->xres_virtual == 0)
393 var->xres_virtual = var->xres;
395 if (var->yres_virtual == 0)
396 var->yres_virtual = var->yres;
398 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
399 return -EINVAL;
401 if (var->xres < xres_min)
402 var->xres = xres_min;
403 if (var->yres < yres_min)
404 var->yres = yres_min;
405 if (var->xres > xres_max)
406 var->xres = xres_max;
407 if (var->yres > yres_max)
408 var->yres = yres_max;
410 if (var->xres > var->xres_virtual)
411 var->xres = var->xres_virtual;
412 if (var->yres > var->yres_virtual)
413 var->yres = var->yres_virtual;
415 return 0;
416 }
418 static void shrink_height(unsigned long max_frame_size,
419 struct fb_var_screeninfo *var)
420 {
421 DBG("can't fit FB into memory, reducing y\n");
422 var->yres_virtual = max_frame_size /
423 (var->xres_virtual * var->bits_per_pixel >> 3);
425 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
426 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
428 if (var->yres > var->yres_virtual)
429 var->yres = var->yres_virtual;
430 }
432 static void shrink_width(unsigned long max_frame_size,
433 struct fb_var_screeninfo *var)
434 {
435 DBG("can't fit FB into memory, reducing x\n");
436 var->xres_virtual = max_frame_size / var->yres_virtual /
437 (var->bits_per_pixel >> 3);
439 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
440 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
442 if (var->xres > var->xres_virtual)
443 var->xres = var->xres_virtual;
444 }
446 static int check_vrfb_fb_size(unsigned long region_size,
447 const struct fb_var_screeninfo *var)
448 {
449 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
450 var->yres_virtual, var->bits_per_pixel >> 3);
452 return min_phys_size > region_size ? -EINVAL : 0;
453 }
455 static int check_fb_size(const struct omapfb_info *ofbi,
456 struct fb_var_screeninfo *var)
457 {
458 unsigned long max_frame_size = ofbi->region->size;
459 int bytespp = var->bits_per_pixel >> 3;
460 unsigned long line_size = var->xres_virtual * bytespp;
462 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
463 /* One needs to check for both VRFB and OMAPFB limitations. */
464 if (check_vrfb_fb_size(max_frame_size, var))
465 shrink_height(omap_vrfb_max_height(
466 max_frame_size, var->xres_virtual, bytespp) *
467 line_size, var);
469 if (check_vrfb_fb_size(max_frame_size, var)) {
470 DBG("cannot fit FB to memory\n");
471 return -EINVAL;
472 }
474 return 0;
475 }
477 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
479 if (line_size * var->yres_virtual > max_frame_size)
480 shrink_height(max_frame_size, var);
482 if (line_size * var->yres_virtual > max_frame_size) {
483 shrink_width(max_frame_size, var);
484 line_size = var->xres_virtual * bytespp;
485 }
487 if (line_size * var->yres_virtual > max_frame_size) {
488 DBG("cannot fit FB to memory\n");
489 return -EINVAL;
490 }
492 return 0;
493 }
495 /*
496 * Consider if VRFB assisted rotation is in use and if the virtual space for
497 * the zero degree view needs to be mapped. The need for mapping also acts as
498 * the trigger for setting up the hardware on the context in question. This
499 * ensures that one does not attempt to access the virtual view before the
500 * hardware is serving the address translations.
501 */
502 static int setup_vrfb_rotation(struct fb_info *fbi)
503 {
504 struct omapfb_info *ofbi = FB2OFB(fbi);
505 struct omapfb2_mem_region *rg = ofbi->region;
506 struct vrfb *vrfb = &rg->vrfb;
507 struct fb_var_screeninfo *var = &fbi->var;
508 struct fb_fix_screeninfo *fix = &fbi->fix;
509 unsigned bytespp;
510 bool yuv_mode;
511 enum omap_color_mode mode;
512 int r;
513 bool reconf;
515 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
516 return 0;
518 DBG("setup_vrfb_rotation\n");
520 r = fb_mode_to_dss_mode(var, &mode);
521 if (r)
522 return r;
524 bytespp = var->bits_per_pixel >> 3;
526 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
528 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
529 * is enabled/disabled, or if bytes per pixel changes */
531 /* XXX we shouldn't allow this when framebuffer is mmapped */
533 reconf = false;
535 if (yuv_mode != vrfb->yuv_mode)
536 reconf = true;
537 else if (bytespp != vrfb->bytespp)
538 reconf = true;
539 else if (vrfb->xres != var->xres_virtual ||
540 vrfb->yres != var->yres_virtual)
541 reconf = true;
543 if (vrfb->vaddr[0] && reconf) {
544 fbi->screen_base = NULL;
545 fix->smem_start = 0;
546 fix->smem_len = 0;
547 iounmap(vrfb->vaddr[0]);
548 vrfb->vaddr[0] = NULL;
549 DBG("setup_vrfb_rotation: reset fb\n");
550 }
552 if (vrfb->vaddr[0])
553 return 0;
555 omap_vrfb_setup(&rg->vrfb, rg->paddr,
556 var->xres_virtual,
557 var->yres_virtual,
558 bytespp, yuv_mode);
560 /* Now one can ioremap the 0 angle view */
561 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
562 if (r)
563 return r;
565 /* used by open/write in fbmem.c */
566 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
568 fix->smem_start = ofbi->region->vrfb.paddr[0];
570 switch (var->nonstd) {
571 case OMAPFB_COLOR_YUV422:
572 case OMAPFB_COLOR_YUY422:
573 fix->line_length =
574 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
575 break;
576 default:
577 fix->line_length =
578 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
579 break;
580 }
582 fix->smem_len = var->yres_virtual * fix->line_length;
584 return 0;
585 }
587 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
588 struct fb_var_screeninfo *var)
589 {
590 int i;
592 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
593 struct omapfb_colormode *mode = &omapfb_colormodes[i];
594 if (dssmode == mode->dssmode) {
595 assign_colormode_to_var(var, mode);
596 return 0;
597 }
598 }
599 return -ENOENT;
600 }
602 void set_fb_fix(struct fb_info *fbi)
603 {
604 struct fb_fix_screeninfo *fix = &fbi->fix;
605 struct fb_var_screeninfo *var = &fbi->var;
606 struct omapfb_info *ofbi = FB2OFB(fbi);
607 struct omapfb2_mem_region *rg = ofbi->region;
609 DBG("set_fb_fix\n");
611 /* used by open/write in fbmem.c */
612 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
614 /* used by mmap in fbmem.c */
615 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
616 switch (var->nonstd) {
617 case OMAPFB_COLOR_YUV422:
618 case OMAPFB_COLOR_YUY422:
619 fix->line_length =
620 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
621 break;
622 default:
623 fix->line_length =
624 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
625 break;
626 }
628 fix->smem_len = var->yres_virtual * fix->line_length;
629 } else {
630 fix->line_length =
631 (var->xres_virtual * var->bits_per_pixel) >> 3;
632 fix->smem_len = rg->size;
633 }
635 fix->smem_start = omapfb_get_region_paddr(ofbi);
637 fix->type = FB_TYPE_PACKED_PIXELS;
639 if (var->nonstd)
640 fix->visual = FB_VISUAL_PSEUDOCOLOR;
641 else {
642 switch (var->bits_per_pixel) {
643 case 32:
644 case 24:
645 case 16:
646 case 12:
647 fix->visual = FB_VISUAL_TRUECOLOR;
648 /* 12bpp is stored in 16 bits */
649 break;
650 case 1:
651 case 2:
652 case 4:
653 case 8:
654 fix->visual = FB_VISUAL_PSEUDOCOLOR;
655 break;
656 }
657 }
659 fix->accel = FB_ACCEL_NONE;
661 fix->xpanstep = 1;
662 fix->ypanstep = 1;
663 }
665 /* check new var and possibly modify it to be ok */
666 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
667 {
668 struct omapfb_info *ofbi = FB2OFB(fbi);
669 struct omap_dss_device *display = fb2display(fbi);
670 enum omap_color_mode mode = 0;
671 int i;
672 int r;
674 DBG("check_fb_var %d\n", ofbi->id);
676 WARN_ON(!atomic_read(&ofbi->region->lock_count));
678 r = fb_mode_to_dss_mode(var, &mode);
679 if (r) {
680 DBG("cannot convert var to omap dss mode\n");
681 return r;
682 }
684 for (i = 0; i < ofbi->num_overlays; ++i) {
685 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
686 DBG("invalid mode\n");
687 return -EINVAL;
688 }
689 }
691 if (var->rotate > 3)
692 return -EINVAL;
694 if (check_fb_res_bounds(var))
695 return -EINVAL;
697 /* When no memory is allocated ignore the size check */
698 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
699 return -EINVAL;
701 if (var->xres + var->xoffset > var->xres_virtual)
702 var->xoffset = var->xres_virtual - var->xres;
703 if (var->yres + var->yoffset > var->yres_virtual)
704 var->yoffset = var->yres_virtual - var->yres;
706 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
707 var->xres, var->yres,
708 var->xres_virtual, var->yres_virtual);
710 if (display && display->driver->get_dimensions) {
711 u32 w, h;
712 display->driver->get_dimensions(display, &w, &h);
713 var->width = DIV_ROUND_CLOSEST(w, 1000);
714 var->height = DIV_ROUND_CLOSEST(h, 1000);
715 } else {
716 var->height = -1;
717 var->width = -1;
718 }
720 var->grayscale = 0;
722 if (display && display->driver->get_timings) {
723 struct omap_video_timings timings;
724 display->driver->get_timings(display, &timings);
726 /* pixclock in ps, the rest in pixclock */
727 var->pixclock = timings.pixelclock != 0 ?
728 KHZ2PICOS(timings.pixelclock / 1000) :
729 0;
730 var->left_margin = timings.hbp;
731 var->right_margin = timings.hfp;
732 var->upper_margin = timings.vbp;
733 var->lower_margin = timings.vfp;
734 var->hsync_len = timings.hsw;
735 var->vsync_len = timings.vsw;
736 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
737 FB_SYNC_HOR_HIGH_ACT : 0;
738 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
739 FB_SYNC_VERT_HIGH_ACT : 0;
740 var->vmode = timings.interlace ?
741 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
742 } else {
743 var->pixclock = 0;
744 var->left_margin = 0;
745 var->right_margin = 0;
746 var->upper_margin = 0;
747 var->lower_margin = 0;
748 var->hsync_len = 0;
749 var->vsync_len = 0;
750 var->sync = 0;
751 var->vmode = FB_VMODE_NONINTERLACED;
752 }
754 return 0;
755 }
757 /*
758 * ---------------------------------------------------------------------------
759 * fbdev framework callbacks
760 * ---------------------------------------------------------------------------
761 */
762 static int omapfb_open(struct fb_info *fbi, int user)
763 {
764 return 0;
765 }
767 static int omapfb_release(struct fb_info *fbi, int user)
768 {
769 return 0;
770 }
772 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
773 const struct fb_fix_screeninfo *fix, int rotation)
774 {
775 unsigned offset;
777 offset = var->yoffset * fix->line_length +
778 var->xoffset * (var->bits_per_pixel >> 3);
780 return offset;
781 }
783 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
784 const struct fb_fix_screeninfo *fix, int rotation)
785 {
786 unsigned offset;
788 if (rotation == FB_ROTATE_UD)
789 offset = (var->yres_virtual - var->yres) *
790 fix->line_length;
791 else if (rotation == FB_ROTATE_CW)
792 offset = (var->yres_virtual - var->yres) *
793 (var->bits_per_pixel >> 3);
794 else
795 offset = 0;
797 if (rotation == FB_ROTATE_UR)
798 offset += var->yoffset * fix->line_length +
799 var->xoffset * (var->bits_per_pixel >> 3);
800 else if (rotation == FB_ROTATE_UD)
801 offset -= var->yoffset * fix->line_length +
802 var->xoffset * (var->bits_per_pixel >> 3);
803 else if (rotation == FB_ROTATE_CW)
804 offset -= var->xoffset * fix->line_length +
805 var->yoffset * (var->bits_per_pixel >> 3);
806 else if (rotation == FB_ROTATE_CCW)
807 offset += var->xoffset * fix->line_length +
808 var->yoffset * (var->bits_per_pixel >> 3);
810 return offset;
811 }
813 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
814 const struct fb_var_screeninfo *var,
815 const struct fb_fix_screeninfo *fix,
816 int rotation, u32 *paddr)
817 {
818 u32 data_start_p;
819 int offset;
821 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
822 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
823 else
824 data_start_p = omapfb_get_region_paddr(ofbi);
826 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
827 offset = calc_rotation_offset_vrfb(var, fix, rotation);
828 else
829 offset = calc_rotation_offset_dma(var, fix, rotation);
831 data_start_p += offset;
833 if (offset)
834 DBG("offset %d, %d = %d\n",
835 var->xoffset, var->yoffset, offset);
837 DBG("paddr %x\n", data_start_p);
839 *paddr = data_start_p;
840 }
842 /* setup overlay according to the fb */
843 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
844 u16 posx, u16 posy, u16 outw, u16 outh)
845 {
846 int r = 0;
847 struct omapfb_info *ofbi = FB2OFB(fbi);
848 struct fb_var_screeninfo *var = &fbi->var;
849 struct fb_fix_screeninfo *fix = &fbi->fix;
850 enum omap_color_mode mode = 0;
851 u32 data_start_p = 0;
852 struct omap_overlay_info info;
853 int xres, yres;
854 int screen_width;
855 int mirror;
856 int rotation = var->rotate;
857 int i;
859 WARN_ON(!atomic_read(&ofbi->region->lock_count));
861 for (i = 0; i < ofbi->num_overlays; i++) {
862 if (ovl != ofbi->overlays[i])
863 continue;
865 rotation = (rotation + ofbi->rotation[i]) % 4;
866 break;
867 }
869 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
870 posx, posy, outw, outh);
872 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
873 xres = var->yres;
874 yres = var->xres;
875 } else {
876 xres = var->xres;
877 yres = var->yres;
878 }
880 if (ofbi->region->size)
881 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
883 r = fb_mode_to_dss_mode(var, &mode);
884 if (r) {
885 DBG("fb_mode_to_dss_mode failed");
886 goto err;
887 }
889 switch (var->nonstd) {
890 case OMAPFB_COLOR_YUV422:
891 case OMAPFB_COLOR_YUY422:
892 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
893 screen_width = fix->line_length
894 / (var->bits_per_pixel >> 2);
895 break;
896 }
897 default:
898 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
899 break;
900 }
902 ovl->get_overlay_info(ovl, &info);
904 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
905 mirror = 0;
906 else
907 mirror = ofbi->mirror;
909 info.paddr = data_start_p;
910 info.screen_width = screen_width;
911 info.width = xres;
912 info.height = yres;
913 info.color_mode = mode;
914 info.rotation_type = ofbi->rotation_type;
915 info.rotation = rotation;
916 info.mirror = mirror;
918 info.pos_x = posx;
919 info.pos_y = posy;
920 info.out_width = outw;
921 info.out_height = outh;
923 r = ovl->set_overlay_info(ovl, &info);
924 if (r) {
925 DBG("ovl->setup_overlay_info failed\n");
926 goto err;
927 }
929 return 0;
931 err:
932 DBG("setup_overlay failed\n");
933 return r;
934 }
936 /* apply var to the overlay */
937 int omapfb_apply_changes(struct fb_info *fbi, int init)
938 {
939 int r = 0;
940 struct omapfb_info *ofbi = FB2OFB(fbi);
941 struct fb_var_screeninfo *var = &fbi->var;
942 struct omap_overlay *ovl;
943 u16 posx, posy;
944 u16 outw, outh;
945 int i;
947 #ifdef DEBUG
948 if (omapfb_test_pattern)
949 fill_fb(fbi);
950 #endif
952 WARN_ON(!atomic_read(&ofbi->region->lock_count));
954 for (i = 0; i < ofbi->num_overlays; i++) {
955 ovl = ofbi->overlays[i];
957 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
959 if (ofbi->region->size == 0) {
960 /* the fb is not available. disable the overlay */
961 omapfb_overlay_enable(ovl, 0);
962 if (!init && ovl->manager)
963 ovl->manager->apply(ovl->manager);
964 continue;
965 }
967 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
968 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
969 if (rotation == FB_ROTATE_CW ||
970 rotation == FB_ROTATE_CCW) {
971 outw = var->yres;
972 outh = var->xres;
973 } else {
974 outw = var->xres;
975 outh = var->yres;
976 }
977 } else {
978 struct omap_overlay_info info;
979 ovl->get_overlay_info(ovl, &info);
980 outw = info.out_width;
981 outh = info.out_height;
982 }
984 if (init) {
985 posx = 0;
986 posy = 0;
987 } else {
988 struct omap_overlay_info info;
989 ovl->get_overlay_info(ovl, &info);
990 posx = info.pos_x;
991 posy = info.pos_y;
992 }
994 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
995 if (r)
996 goto err;
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 }
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;
1014 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1016 omapfb_get_mem_region(ofbi->region);
1018 r = check_fb_var(fbi, var);
1020 omapfb_put_mem_region(ofbi->region);
1022 return r;
1023 }
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;
1031 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1033 omapfb_get_mem_region(ofbi->region);
1035 set_fb_fix(fbi);
1037 r = setup_vrfb_rotation(fbi);
1038 if (r)
1039 goto out;
1041 r = omapfb_apply_changes(fbi, 0);
1043 out:
1044 omapfb_put_mem_region(ofbi->region);
1046 return r;
1047 }
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;
1056 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1058 if (var->xoffset == fbi->var.xoffset &&
1059 var->yoffset == fbi->var.yoffset)
1060 return 0;
1062 new_var = fbi->var;
1063 new_var.xoffset = var->xoffset;
1064 new_var.yoffset = var->yoffset;
1066 fbi->var = new_var;
1068 omapfb_get_mem_region(ofbi->region);
1070 r = omapfb_apply_changes(fbi, 0);
1072 omapfb_put_mem_region(ofbi->region);
1074 return r;
1075 }
1077 static void mmap_user_open(struct vm_area_struct *vma)
1078 {
1079 struct omapfb2_mem_region *rg = vma->vm_private_data;
1081 omapfb_get_mem_region(rg);
1082 atomic_inc(&rg->map_count);
1083 omapfb_put_mem_region(rg);
1084 }
1086 static void mmap_user_close(struct vm_area_struct *vma)
1087 {
1088 struct omapfb2_mem_region *rg = vma->vm_private_data;
1090 omapfb_get_mem_region(rg);
1091 atomic_dec(&rg->map_count);
1092 omapfb_put_mem_region(rg);
1093 }
1095 static struct vm_operations_struct mmap_user_ops = {
1096 .open = mmap_user_open,
1097 .close = mmap_user_close,
1098 };
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 start;
1106 u32 len;
1107 int r;
1109 rg = omapfb_get_mem_region(ofbi->region);
1111 start = omapfb_get_region_paddr(ofbi);
1112 len = fix->smem_len;
1114 DBG("user mmap region start %lx, len %d, off %lx\n", start, len,
1115 vma->vm_pgoff << PAGE_SHIFT);
1117 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1118 vma->vm_ops = &mmap_user_ops;
1119 vma->vm_private_data = rg;
1121 r = vm_iomap_memory(vma, start, len);
1122 if (r)
1123 goto error;
1125 /* vm_ops.open won't be called for mmap itself. */
1126 atomic_inc(&rg->map_count);
1128 omapfb_put_mem_region(rg);
1130 return 0;
1132 error:
1133 omapfb_put_mem_region(ofbi->region);
1135 return r;
1136 }
1138 /* Store a single color palette entry into a pseudo palette or the hardware
1139 * palette if one is available. For now we support only 16bpp and thus store
1140 * the entry only to the pseudo palette.
1141 */
1142 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1143 u_int blue, u_int transp, int update_hw_pal)
1144 {
1145 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1146 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1147 struct fb_var_screeninfo *var = &fbi->var;
1148 int r = 0;
1150 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1152 /*switch (plane->color_mode) {*/
1153 switch (mode) {
1154 case OMAPFB_COLOR_YUV422:
1155 case OMAPFB_COLOR_YUV420:
1156 case OMAPFB_COLOR_YUY422:
1157 r = -EINVAL;
1158 break;
1159 case OMAPFB_COLOR_CLUT_8BPP:
1160 case OMAPFB_COLOR_CLUT_4BPP:
1161 case OMAPFB_COLOR_CLUT_2BPP:
1162 case OMAPFB_COLOR_CLUT_1BPP:
1163 /*
1164 if (fbdev->ctrl->setcolreg)
1165 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1166 transp, update_hw_pal);
1167 */
1168 /* Fallthrough */
1169 r = -EINVAL;
1170 break;
1171 case OMAPFB_COLOR_RGB565:
1172 case OMAPFB_COLOR_RGB444:
1173 case OMAPFB_COLOR_RGB24P:
1174 case OMAPFB_COLOR_RGB24U:
1175 if (r != 0)
1176 break;
1178 if (regno < 16) {
1179 u32 pal;
1180 pal = ((red >> (16 - var->red.length)) <<
1181 var->red.offset) |
1182 ((green >> (16 - var->green.length)) <<
1183 var->green.offset) |
1184 (blue >> (16 - var->blue.length));
1185 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1186 }
1187 break;
1188 default:
1189 BUG();
1190 }
1191 return r;
1192 }
1194 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1195 u_int transp, struct fb_info *info)
1196 {
1197 DBG("setcolreg\n");
1199 return _setcolreg(info, regno, red, green, blue, transp, 1);
1200 }
1202 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1203 {
1204 int count, index, r;
1205 u16 *red, *green, *blue, *transp;
1206 u16 trans = 0xffff;
1208 DBG("setcmap\n");
1210 red = cmap->red;
1211 green = cmap->green;
1212 blue = cmap->blue;
1213 transp = cmap->transp;
1214 index = cmap->start;
1216 for (count = 0; count < cmap->len; count++) {
1217 if (transp)
1218 trans = *transp++;
1219 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1220 count == cmap->len - 1);
1221 if (r != 0)
1222 return r;
1223 }
1225 return 0;
1226 }
1228 static int omapfb_blank(int blank, struct fb_info *fbi)
1229 {
1230 struct omapfb_info *ofbi = FB2OFB(fbi);
1231 struct omapfb2_device *fbdev = ofbi->fbdev;
1232 struct omap_dss_device *display = fb2display(fbi);
1233 struct omapfb_display_data *d;
1234 int r = 0;
1236 if (!display)
1237 return -EINVAL;
1239 omapfb_lock(fbdev);
1241 d = get_display_data(fbdev, display);
1243 switch (blank) {
1244 case FB_BLANK_UNBLANK:
1245 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1246 goto exit;
1248 r = display->driver->enable(display);
1250 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1251 d->update_mode == OMAPFB_AUTO_UPDATE &&
1252 !d->auto_update_work_enabled)
1253 omapfb_start_auto_update(fbdev, display);
1255 break;
1257 case FB_BLANK_NORMAL:
1258 /* FB_BLANK_NORMAL could be implemented.
1259 * Needs DSS additions. */
1260 case FB_BLANK_VSYNC_SUSPEND:
1261 case FB_BLANK_HSYNC_SUSPEND:
1262 case FB_BLANK_POWERDOWN:
1263 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1264 goto exit;
1266 if (d->auto_update_work_enabled)
1267 omapfb_stop_auto_update(fbdev, display);
1269 display->driver->disable(display);
1271 break;
1273 default:
1274 r = -EINVAL;
1275 }
1277 exit:
1278 omapfb_unlock(fbdev);
1280 return r;
1281 }
1283 #if 0
1284 /* XXX fb_read and fb_write are needed for VRFB */
1285 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1286 size_t count, loff_t *ppos)
1287 {
1288 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1289 /* XXX needed for VRFB */
1290 return count;
1291 }
1292 #endif
1294 static struct fb_ops omapfb_ops = {
1295 .owner = THIS_MODULE,
1296 .fb_open = omapfb_open,
1297 .fb_release = omapfb_release,
1298 .fb_fillrect = cfb_fillrect,
1299 .fb_copyarea = cfb_copyarea,
1300 .fb_imageblit = cfb_imageblit,
1301 .fb_blank = omapfb_blank,
1302 .fb_ioctl = omapfb_ioctl,
1303 .fb_check_var = omapfb_check_var,
1304 .fb_set_par = omapfb_set_par,
1305 .fb_pan_display = omapfb_pan_display,
1306 .fb_mmap = omapfb_mmap,
1307 .fb_setcolreg = omapfb_setcolreg,
1308 .fb_setcmap = omapfb_setcmap,
1309 /*.fb_write = omapfb_write,*/
1310 };
1312 static void omapfb_free_fbmem(struct fb_info *fbi)
1313 {
1314 struct omapfb_info *ofbi = FB2OFB(fbi);
1315 struct omapfb2_device *fbdev = ofbi->fbdev;
1316 struct omapfb2_mem_region *rg;
1318 rg = ofbi->region;
1320 if (rg->token == NULL)
1321 return;
1323 WARN_ON(atomic_read(&rg->map_count));
1325 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1326 /* unmap the 0 angle rotation */
1327 if (rg->vrfb.vaddr[0]) {
1328 iounmap(rg->vrfb.vaddr[0]);
1329 rg->vrfb.vaddr[0] = NULL;
1330 }
1332 omap_vrfb_release_ctx(&rg->vrfb);
1333 }
1335 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1336 &rg->attrs);
1338 rg->token = NULL;
1339 rg->vaddr = NULL;
1340 rg->paddr = 0;
1341 rg->alloc = 0;
1342 rg->size = 0;
1343 }
1345 static void clear_fb_info(struct fb_info *fbi)
1346 {
1347 memset(&fbi->var, 0, sizeof(fbi->var));
1348 memset(&fbi->fix, 0, sizeof(fbi->fix));
1349 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1350 }
1352 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1353 {
1354 int i;
1356 DBG("free all fbmem\n");
1358 for (i = 0; i < fbdev->num_fbs; i++) {
1359 struct fb_info *fbi = fbdev->fbs[i];
1360 omapfb_free_fbmem(fbi);
1361 clear_fb_info(fbi);
1362 }
1364 return 0;
1365 }
1367 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1368 unsigned long paddr)
1369 {
1370 struct omapfb_info *ofbi = FB2OFB(fbi);
1371 struct omapfb2_device *fbdev = ofbi->fbdev;
1372 struct omapfb2_mem_region *rg;
1373 void *token;
1374 DEFINE_DMA_ATTRS(attrs);
1375 dma_addr_t dma_handle;
1376 int r;
1378 rg = ofbi->region;
1380 rg->paddr = 0;
1381 rg->vaddr = NULL;
1382 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1383 rg->size = 0;
1384 rg->type = 0;
1385 rg->alloc = false;
1386 rg->map = false;
1388 size = PAGE_ALIGN(size);
1390 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
1392 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1393 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
1395 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1397 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1398 GFP_KERNEL, &attrs);
1400 if (token == NULL) {
1401 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1402 return -ENOMEM;
1403 }
1405 DBG("allocated VRAM paddr %lx, vaddr %p\n",
1406 (unsigned long)dma_handle, token);
1408 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1409 r = omap_vrfb_request_ctx(&rg->vrfb);
1410 if (r) {
1411 dma_free_attrs(fbdev->dev, size, token, dma_handle,
1412 &attrs);
1413 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1414 return r;
1415 }
1416 }
1418 rg->attrs = attrs;
1419 rg->token = token;
1420 rg->dma_handle = dma_handle;
1422 rg->paddr = (unsigned long)dma_handle;
1423 rg->vaddr = (void __iomem *)token;
1424 rg->size = size;
1425 rg->alloc = 1;
1427 return 0;
1428 }
1430 /* allocate fbmem using display resolution as reference */
1431 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1432 unsigned long paddr)
1433 {
1434 struct omapfb_info *ofbi = FB2OFB(fbi);
1435 struct omapfb2_device *fbdev = ofbi->fbdev;
1436 struct omap_dss_device *display;
1437 int bytespp;
1439 display = fb2display(fbi);
1441 if (!display)
1442 return 0;
1444 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1445 case 16:
1446 bytespp = 2;
1447 break;
1448 case 24:
1449 bytespp = 4;
1450 break;
1451 default:
1452 bytespp = 4;
1453 break;
1454 }
1456 if (!size) {
1457 u16 w, h;
1459 display->driver->get_resolution(display, &w, &h);
1461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1462 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1463 omap_vrfb_min_phys_size(h, w, bytespp));
1465 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1466 w * h * bytespp, size);
1467 } else {
1468 size = w * h * bytespp;
1469 }
1470 }
1472 if (!size)
1473 return 0;
1475 return omapfb_alloc_fbmem(fbi, size, paddr);
1476 }
1478 static int omapfb_parse_vram_param(const char *param, int max_entries,
1479 unsigned long *sizes, unsigned long *paddrs)
1480 {
1481 int fbnum;
1482 unsigned long size;
1483 unsigned long paddr = 0;
1484 char *p, *start;
1486 start = (char *)param;
1488 while (1) {
1489 p = start;
1491 fbnum = simple_strtoul(p, &p, 10);
1493 if (p == start)
1494 return -EINVAL;
1496 if (*p != ':')
1497 return -EINVAL;
1499 if (fbnum >= max_entries)
1500 return -EINVAL;
1502 size = memparse(p + 1, &p);
1504 if (!size)
1505 return -EINVAL;
1507 paddr = 0;
1509 if (*p == '@') {
1510 paddr = simple_strtoul(p + 1, &p, 16);
1512 if (!paddr)
1513 return -EINVAL;
1515 }
1517 WARN_ONCE(paddr,
1518 "reserving memory at predefined address not supported\n");
1520 paddrs[fbnum] = paddr;
1521 sizes[fbnum] = size;
1523 if (*p == 0)
1524 break;
1526 if (*p != ',')
1527 return -EINVAL;
1529 ++p;
1531 start = p;
1532 }
1534 return 0;
1535 }
1537 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1538 {
1539 int i, r;
1540 unsigned long vram_sizes[10];
1541 unsigned long vram_paddrs[10];
1543 memset(&vram_sizes, 0, sizeof(vram_sizes));
1544 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1546 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1547 vram_sizes, vram_paddrs)) {
1548 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1550 memset(&vram_sizes, 0, sizeof(vram_sizes));
1551 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1552 }
1554 for (i = 0; i < fbdev->num_fbs; i++) {
1555 /* allocate memory automatically only for fb0, or if
1556 * excplicitly defined with vram or plat data option */
1557 if (i == 0 || vram_sizes[i] != 0) {
1558 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1559 vram_sizes[i], vram_paddrs[i]);
1561 if (r)
1562 return r;
1563 }
1564 }
1566 for (i = 0; i < fbdev->num_fbs; i++) {
1567 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1568 struct omapfb2_mem_region *rg;
1569 rg = ofbi->region;
1571 DBG("region%d phys %08x virt %p size=%lu\n",
1572 i,
1573 rg->paddr,
1574 rg->vaddr,
1575 rg->size);
1576 }
1578 return 0;
1579 }
1581 static void omapfb_clear_fb(struct fb_info *fbi)
1582 {
1583 const struct fb_fillrect rect = {
1584 .dx = 0,
1585 .dy = 0,
1586 .width = fbi->var.xres_virtual,
1587 .height = fbi->var.yres_virtual,
1588 .color = 0,
1589 .rop = ROP_COPY,
1590 };
1592 cfb_fillrect(fbi, &rect);
1593 }
1595 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1596 {
1597 struct omapfb_info *ofbi = FB2OFB(fbi);
1598 struct omapfb2_device *fbdev = ofbi->fbdev;
1599 struct omapfb2_mem_region *rg = ofbi->region;
1600 unsigned long old_size = rg->size;
1601 unsigned long old_paddr = rg->paddr;
1602 int old_type = rg->type;
1603 int r;
1605 if (type != OMAPFB_MEMTYPE_SDRAM)
1606 return -EINVAL;
1608 size = PAGE_ALIGN(size);
1610 if (old_size == size && old_type == type)
1611 return 0;
1613 omapfb_free_fbmem(fbi);
1615 if (size == 0) {
1616 clear_fb_info(fbi);
1617 return 0;
1618 }
1620 r = omapfb_alloc_fbmem(fbi, size, 0);
1622 if (r) {
1623 if (old_size)
1624 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1626 if (rg->size == 0)
1627 clear_fb_info(fbi);
1629 return r;
1630 }
1632 if (old_size == size)
1633 return 0;
1635 if (old_size == 0) {
1636 DBG("initializing fb %d\n", ofbi->id);
1637 r = omapfb_fb_init(fbdev, fbi);
1638 if (r) {
1639 DBG("omapfb_fb_init failed\n");
1640 goto err;
1641 }
1642 r = omapfb_apply_changes(fbi, 1);
1643 if (r) {
1644 DBG("omapfb_apply_changes failed\n");
1645 goto err;
1646 }
1647 } else {
1648 struct fb_var_screeninfo new_var;
1649 memcpy(&new_var, &fbi->var, sizeof(new_var));
1650 r = check_fb_var(fbi, &new_var);
1651 if (r)
1652 goto err;
1653 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1654 set_fb_fix(fbi);
1655 r = setup_vrfb_rotation(fbi);
1656 if (r)
1657 goto err;
1658 }
1660 omapfb_clear_fb(fbi);
1662 return 0;
1663 err:
1664 omapfb_free_fbmem(fbi);
1665 clear_fb_info(fbi);
1666 return r;
1667 }
1669 static void omapfb_auto_update_work(struct work_struct *work)
1670 {
1671 struct omap_dss_device *dssdev;
1672 struct omap_dss_driver *dssdrv;
1673 struct omapfb_display_data *d;
1674 u16 w, h;
1675 unsigned int freq;
1676 struct omapfb2_device *fbdev;
1678 d = container_of(work, struct omapfb_display_data,
1679 auto_update_work.work);
1681 dssdev = d->dssdev;
1682 dssdrv = dssdev->driver;
1683 fbdev = d->fbdev;
1685 if (!dssdrv || !dssdrv->update)
1686 return;
1688 if (dssdrv->sync)
1689 dssdrv->sync(dssdev);
1691 dssdrv->get_resolution(dssdev, &w, &h);
1692 dssdrv->update(dssdev, 0, 0, w, h);
1694 freq = auto_update_freq;
1695 if (freq == 0)
1696 freq = 20;
1697 queue_delayed_work(fbdev->auto_update_wq,
1698 &d->auto_update_work, HZ / freq);
1699 }
1701 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1702 struct omap_dss_device *display)
1703 {
1704 struct omapfb_display_data *d;
1706 if (fbdev->auto_update_wq == NULL) {
1707 struct workqueue_struct *wq;
1709 wq = create_singlethread_workqueue("omapfb_auto_update");
1711 if (wq == NULL) {
1712 dev_err(fbdev->dev, "Failed to create workqueue for "
1713 "auto-update\n");
1714 return;
1715 }
1717 fbdev->auto_update_wq = wq;
1718 }
1720 d = get_display_data(fbdev, display);
1722 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1724 d->auto_update_work_enabled = true;
1726 omapfb_auto_update_work(&d->auto_update_work.work);
1727 }
1729 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1730 struct omap_dss_device *display)
1731 {
1732 struct omapfb_display_data *d;
1734 d = get_display_data(fbdev, display);
1736 cancel_delayed_work_sync(&d->auto_update_work);
1738 d->auto_update_work_enabled = false;
1739 }
1741 /* initialize fb_info, var, fix to something sane based on the display */
1742 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1743 {
1744 struct fb_var_screeninfo *var = &fbi->var;
1745 struct omap_dss_device *display = fb2display(fbi);
1746 struct omapfb_info *ofbi = FB2OFB(fbi);
1747 int r = 0;
1749 fbi->fbops = &omapfb_ops;
1750 fbi->flags = FBINFO_FLAG_DEFAULT;
1751 fbi->pseudo_palette = fbdev->pseudo_palette;
1753 if (ofbi->region->size == 0) {
1754 clear_fb_info(fbi);
1755 return 0;
1756 }
1758 var->nonstd = 0;
1759 var->bits_per_pixel = 0;
1761 var->rotate = def_rotate;
1763 if (display) {
1764 u16 w, h;
1765 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1767 display->driver->get_resolution(display, &w, &h);
1769 if (rotation == FB_ROTATE_CW ||
1770 rotation == FB_ROTATE_CCW) {
1771 var->xres = h;
1772 var->yres = w;
1773 } else {
1774 var->xres = w;
1775 var->yres = h;
1776 }
1778 var->xres_virtual = var->xres;
1779 var->yres_virtual = var->yres;
1781 if (!var->bits_per_pixel) {
1782 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1783 case 16:
1784 var->bits_per_pixel = 16;
1785 break;
1786 case 24:
1787 var->bits_per_pixel = 32;
1788 break;
1789 default:
1790 dev_err(fbdev->dev, "illegal display "
1791 "bpp\n");
1792 return -EINVAL;
1793 }
1794 }
1795 } else {
1796 /* if there's no display, let's just guess some basic values */
1797 var->xres = 320;
1798 var->yres = 240;
1799 var->xres_virtual = var->xres;
1800 var->yres_virtual = var->yres;
1801 if (!var->bits_per_pixel)
1802 var->bits_per_pixel = 16;
1803 }
1805 r = check_fb_var(fbi, var);
1806 if (r)
1807 goto err;
1809 set_fb_fix(fbi);
1810 r = setup_vrfb_rotation(fbi);
1811 if (r)
1812 goto err;
1814 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1815 if (r)
1816 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1818 err:
1819 return r;
1820 }
1822 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1823 {
1824 fb_dealloc_cmap(&fbi->cmap);
1825 }
1828 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1829 {
1830 int i;
1832 DBG("free_resources\n");
1834 if (fbdev == NULL)
1835 return;
1837 for (i = 0; i < fbdev->num_fbs; i++) {
1838 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1839 int j;
1841 for (j = 0; j < ofbi->num_overlays; j++) {
1842 struct omap_overlay *ovl = ofbi->overlays[j];
1843 ovl->disable(ovl);
1844 }
1845 }
1847 for (i = 0; i < fbdev->num_fbs; i++)
1848 unregister_framebuffer(fbdev->fbs[i]);
1850 /* free the reserved fbmem */
1851 omapfb_free_all_fbmem(fbdev);
1853 for (i = 0; i < fbdev->num_fbs; i++) {
1854 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1855 framebuffer_release(fbdev->fbs[i]);
1856 }
1858 for (i = 0; i < fbdev->num_displays; i++) {
1859 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1861 if (fbdev->displays[i].auto_update_work_enabled)
1862 omapfb_stop_auto_update(fbdev, dssdev);
1864 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1865 dssdev->driver->disable(dssdev);
1867 dssdev->driver->disconnect(dssdev);
1869 omap_dss_put_device(dssdev);
1870 }
1872 if (fbdev->auto_update_wq != NULL) {
1873 flush_workqueue(fbdev->auto_update_wq);
1874 destroy_workqueue(fbdev->auto_update_wq);
1875 fbdev->auto_update_wq = NULL;
1876 }
1878 dev_set_drvdata(fbdev->dev, NULL);
1879 }
1881 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1882 {
1883 int r, i;
1885 fbdev->num_fbs = 0;
1887 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1889 /* allocate fb_infos */
1890 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1891 struct fb_info *fbi;
1892 struct omapfb_info *ofbi;
1894 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1895 fbdev->dev);
1897 if (fbi == NULL) {
1898 dev_err(fbdev->dev,
1899 "unable to allocate memory for plane info\n");
1900 return -ENOMEM;
1901 }
1903 clear_fb_info(fbi);
1905 fbdev->fbs[i] = fbi;
1907 ofbi = FB2OFB(fbi);
1908 ofbi->fbdev = fbdev;
1909 ofbi->id = i;
1911 ofbi->region = &fbdev->regions[i];
1912 ofbi->region->id = i;
1913 init_rwsem(&ofbi->region->lock);
1915 /* assign these early, so that fb alloc can use them */
1916 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1917 OMAP_DSS_ROT_DMA;
1918 ofbi->mirror = def_mirror;
1920 fbdev->num_fbs++;
1921 }
1923 DBG("fb_infos allocated\n");
1925 /* assign overlays for the fbs */
1926 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1927 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1929 ofbi->overlays[0] = fbdev->overlays[i];
1930 ofbi->num_overlays = 1;
1931 }
1933 /* allocate fb memories */
1934 r = omapfb_allocate_all_fbs(fbdev);
1935 if (r) {
1936 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1937 return r;
1938 }
1940 DBG("fbmems allocated\n");
1942 /* setup fb_infos */
1943 for (i = 0; i < fbdev->num_fbs; i++) {
1944 struct fb_info *fbi = fbdev->fbs[i];
1945 struct omapfb_info *ofbi = FB2OFB(fbi);
1947 omapfb_get_mem_region(ofbi->region);
1948 r = omapfb_fb_init(fbdev, fbi);
1949 omapfb_put_mem_region(ofbi->region);
1951 if (r) {
1952 dev_err(fbdev->dev, "failed to setup fb_info\n");
1953 return r;
1954 }
1955 }
1957 for (i = 0; i < fbdev->num_fbs; i++) {
1958 struct fb_info *fbi = fbdev->fbs[i];
1959 struct omapfb_info *ofbi = FB2OFB(fbi);
1961 if (ofbi->region->size == 0)
1962 continue;
1964 omapfb_clear_fb(fbi);
1965 }
1967 DBG("fb_infos initialized\n");
1969 for (i = 0; i < fbdev->num_fbs; i++) {
1970 r = register_framebuffer(fbdev->fbs[i]);
1971 if (r != 0) {
1972 dev_err(fbdev->dev,
1973 "registering framebuffer %d failed\n", i);
1974 return r;
1975 }
1976 }
1978 DBG("framebuffers registered\n");
1980 for (i = 0; i < fbdev->num_fbs; i++) {
1981 struct fb_info *fbi = fbdev->fbs[i];
1982 struct omapfb_info *ofbi = FB2OFB(fbi);
1984 omapfb_get_mem_region(ofbi->region);
1985 r = omapfb_apply_changes(fbi, 1);
1986 omapfb_put_mem_region(ofbi->region);
1988 if (r) {
1989 dev_err(fbdev->dev, "failed to change mode\n");
1990 return r;
1991 }
1992 }
1994 /* Enable fb0 */
1995 if (fbdev->num_fbs > 0) {
1996 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1998 if (ofbi->num_overlays > 0) {
1999 struct omap_overlay *ovl = ofbi->overlays[0];
2001 ovl->manager->apply(ovl->manager);
2003 r = omapfb_overlay_enable(ovl, 1);
2005 if (r) {
2006 dev_err(fbdev->dev,
2007 "failed to enable overlay\n");
2008 return r;
2009 }
2010 }
2011 }
2013 DBG("create_framebuffers done\n");
2015 return 0;
2016 }
2018 static int omapfb_mode_to_timings(const char *mode_str,
2019 struct omap_dss_device *display,
2020 struct omap_video_timings *timings, u8 *bpp)
2021 {
2022 struct fb_info *fbi;
2023 struct fb_var_screeninfo *var;
2024 struct fb_ops *fbops;
2025 int r;
2027 #ifdef CONFIG_OMAP2_DSS_VENC
2028 if (strcmp(mode_str, "pal") == 0) {
2029 *timings = omap_dss_pal_timings;
2030 *bpp = 24;
2031 return 0;
2032 } else if (strcmp(mode_str, "ntsc") == 0) {
2033 *timings = omap_dss_ntsc_timings;
2034 *bpp = 24;
2035 return 0;
2036 }
2037 #endif
2039 /* this is quite a hack, but I wanted to use the modedb and for
2040 * that we need fb_info and var, so we create dummy ones */
2042 *bpp = 0;
2043 fbi = NULL;
2044 var = NULL;
2045 fbops = NULL;
2047 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2048 if (fbi == NULL) {
2049 r = -ENOMEM;
2050 goto err;
2051 }
2053 var = kzalloc(sizeof(*var), GFP_KERNEL);
2054 if (var == NULL) {
2055 r = -ENOMEM;
2056 goto err;
2057 }
2059 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2060 if (fbops == NULL) {
2061 r = -ENOMEM;
2062 goto err;
2063 }
2065 fbi->fbops = fbops;
2067 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2068 if (r == 0) {
2069 r = -EINVAL;
2070 goto err;
2071 }
2073 if (display->driver->get_timings) {
2074 display->driver->get_timings(display, timings);
2075 } else {
2076 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2077 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2078 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2079 }
2081 timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000;
2082 timings->hbp = var->left_margin;
2083 timings->hfp = var->right_margin;
2084 timings->vbp = var->upper_margin;
2085 timings->vfp = var->lower_margin;
2086 timings->hsw = var->hsync_len;
2087 timings->vsw = var->vsync_len;
2088 timings->x_res = var->xres;
2089 timings->y_res = var->yres;
2090 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2091 OMAPDSS_SIG_ACTIVE_HIGH :
2092 OMAPDSS_SIG_ACTIVE_LOW;
2093 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2094 OMAPDSS_SIG_ACTIVE_HIGH :
2095 OMAPDSS_SIG_ACTIVE_LOW;
2096 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2098 switch (var->bits_per_pixel) {
2099 case 16:
2100 *bpp = 16;
2101 break;
2102 case 24:
2103 case 32:
2104 default:
2105 *bpp = 24;
2106 break;
2107 }
2109 r = 0;
2111 err:
2112 kfree(fbi);
2113 kfree(var);
2114 kfree(fbops);
2116 return r;
2117 }
2119 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2120 struct omap_dss_device *display, char *mode_str)
2121 {
2122 int r;
2123 u8 bpp;
2124 struct omap_video_timings timings, temp_timings;
2125 struct omapfb_display_data *d;
2127 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2128 if (r)
2129 return r;
2131 d = get_display_data(fbdev, display);
2132 d->bpp_override = bpp;
2134 if (display->driver->check_timings) {
2135 r = display->driver->check_timings(display, &timings);
2136 if (r)
2137 return r;
2138 } else {
2139 /* If check_timings is not present compare xres and yres */
2140 if (display->driver->get_timings) {
2141 display->driver->get_timings(display, &temp_timings);
2143 if (temp_timings.x_res != timings.x_res ||
2144 temp_timings.y_res != timings.y_res)
2145 return -EINVAL;
2146 }
2147 }
2149 if (display->driver->set_timings)
2150 display->driver->set_timings(display, &timings);
2152 return 0;
2153 }
2155 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2156 struct omap_dss_device *dssdev)
2157 {
2158 struct omapfb_display_data *d;
2160 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2162 d = get_display_data(fbdev, dssdev);
2164 if (d->bpp_override != 0)
2165 return d->bpp_override;
2167 return dssdev->driver->get_recommended_bpp(dssdev);
2168 }
2170 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2171 {
2172 char *str, *options, *this_opt;
2173 int r = 0;
2175 str = kstrdup(def_mode, GFP_KERNEL);
2176 if (!str)
2177 return -ENOMEM;
2178 options = str;
2180 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2181 char *p, *display_str, *mode_str;
2182 struct omap_dss_device *display;
2183 int i;
2185 p = strchr(this_opt, ':');
2186 if (!p) {
2187 r = -EINVAL;
2188 break;
2189 }
2191 *p = 0;
2192 display_str = this_opt;
2193 mode_str = p + 1;
2195 display = NULL;
2196 for (i = 0; i < fbdev->num_displays; ++i) {
2197 if (strcmp(fbdev->displays[i].dssdev->name,
2198 display_str) == 0) {
2199 display = fbdev->displays[i].dssdev;
2200 break;
2201 }
2202 }
2204 if (!display) {
2205 r = -EINVAL;
2206 break;
2207 }
2209 r = omapfb_set_def_mode(fbdev, display, mode_str);
2210 if (r)
2211 break;
2212 }
2214 kfree(str);
2216 return r;
2217 }
2219 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2220 struct omap_dss_device *display,
2221 struct omap_video_timings *t)
2222 {
2223 if (display->driver->get_timings) {
2224 display->driver->get_timings(display, t);
2225 } else {
2226 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2227 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2228 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2229 }
2231 t->x_res = m->xres;
2232 t->y_res = m->yres;
2233 t->pixelclock = PICOS2KHZ(m->pixclock) * 1000;
2234 t->hsw = m->hsync_len;
2235 t->hfp = m->right_margin;
2236 t->hbp = m->left_margin;
2237 t->vsw = m->vsync_len;
2238 t->vfp = m->lower_margin;
2239 t->vbp = m->upper_margin;
2240 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2241 OMAPDSS_SIG_ACTIVE_HIGH :
2242 OMAPDSS_SIG_ACTIVE_LOW;
2243 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2244 OMAPDSS_SIG_ACTIVE_HIGH :
2245 OMAPDSS_SIG_ACTIVE_LOW;
2246 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2247 }
2249 static int omapfb_find_best_mode(struct omap_dss_device *display,
2250 struct omap_video_timings *timings)
2251 {
2252 struct fb_monspecs *specs;
2253 u8 *edid;
2254 int r, i, best_idx, len;
2256 if (!display->driver->read_edid)
2257 return -ENODEV;
2259 len = 0x80 * 2;
2260 edid = kmalloc(len, GFP_KERNEL);
2261 if (edid == NULL)
2262 return -ENOMEM;
2264 r = display->driver->read_edid(display, edid, len);
2265 if (r < 0)
2266 goto err1;
2268 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2269 if (specs == NULL) {
2270 r = -ENOMEM;
2271 goto err1;
2272 }
2274 fb_edid_to_monspecs(edid, specs);
2276 best_idx = -1;
2278 for (i = 0; i < specs->modedb_len; ++i) {
2279 struct fb_videomode *m;
2280 struct omap_video_timings t;
2282 m = &specs->modedb[i];
2284 if (m->pixclock == 0)
2285 continue;
2287 /* skip repeated pixel modes */
2288 if (m->xres == 2880 || m->xres == 1440)
2289 continue;
2291 if (m->vmode & FB_VMODE_INTERLACED ||
2292 m->vmode & FB_VMODE_DOUBLE)
2293 continue;
2295 fb_videomode_to_omap_timings(m, display, &t);
2297 r = display->driver->check_timings(display, &t);
2298 if (r == 0) {
2299 best_idx = i;
2300 break;
2301 }
2302 }
2304 if (best_idx == -1) {
2305 r = -ENOENT;
2306 goto err2;
2307 }
2309 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2310 timings);
2312 r = 0;
2314 err2:
2315 fb_destroy_modedb(specs->modedb);
2316 kfree(specs);
2317 err1:
2318 kfree(edid);
2320 return r;
2321 }
2323 static int omapfb_init_display(struct omapfb2_device *fbdev,
2324 struct omap_dss_device *dssdev)
2325 {
2326 struct omap_dss_driver *dssdrv = dssdev->driver;
2327 struct omapfb_display_data *d;
2328 int r;
2330 r = dssdrv->enable(dssdev);
2331 if (r) {
2332 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2333 dssdev->name);
2334 return r;
2335 }
2337 d = get_display_data(fbdev, dssdev);
2339 d->fbdev = fbdev;
2341 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2342 u16 w, h;
2344 if (auto_update) {
2345 omapfb_start_auto_update(fbdev, dssdev);
2346 d->update_mode = OMAPFB_AUTO_UPDATE;
2347 } else {
2348 d->update_mode = OMAPFB_MANUAL_UPDATE;
2349 }
2351 if (dssdrv->enable_te) {
2352 r = dssdrv->enable_te(dssdev, 1);
2353 if (r) {
2354 dev_err(fbdev->dev, "Failed to set TE\n");
2355 return r;
2356 }
2357 }
2359 dssdrv->get_resolution(dssdev, &w, &h);
2360 r = dssdrv->update(dssdev, 0, 0, w, h);
2361 if (r) {
2362 dev_err(fbdev->dev,
2363 "Failed to update display\n");
2364 return r;
2365 }
2366 } else {
2367 d->update_mode = OMAPFB_AUTO_UPDATE;
2368 }
2370 return 0;
2371 }
2373 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2374 struct omap_dss_device *def_dssdev)
2375 {
2376 int i, r;
2377 struct omap_overlay_manager *mgr;
2379 r = def_dssdev->driver->connect(def_dssdev);
2380 if (r) {
2381 dev_err(fbdev->dev, "failed to connect default display\n");
2382 return r;
2383 }
2385 for (i = 0; i < fbdev->num_displays; ++i) {
2386 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2388 if (dssdev == def_dssdev)
2389 continue;
2391 /*
2392 * We don't care if the connect succeeds or not. We just want to
2393 * connect as many displays as possible.
2394 */
2395 dssdev->driver->connect(dssdev);
2396 }
2398 mgr = omapdss_find_mgr_from_display(def_dssdev);
2400 if (!mgr) {
2401 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2402 return -EINVAL;
2403 }
2405 for (i = 0; i < fbdev->num_overlays; i++) {
2406 struct omap_overlay *ovl = fbdev->overlays[i];
2408 if (ovl->manager)
2409 ovl->unset_manager(ovl);
2411 r = ovl->set_manager(ovl, mgr);
2412 if (r)
2413 dev_warn(fbdev->dev,
2414 "failed to connect overlay %s to manager %s\n",
2415 ovl->name, mgr->name);
2416 }
2418 return 0;
2419 }
2421 static struct omap_dss_device *
2422 omapfb_find_default_display(struct omapfb2_device *fbdev)
2423 {
2424 const char *def_name;
2425 int i;
2427 /*
2428 * Search with the display name from the user or the board file,
2429 * comparing to display names and aliases
2430 */
2432 def_name = omapdss_get_default_display_name();
2434 if (def_name) {
2435 for (i = 0; i < fbdev->num_displays; ++i) {
2436 struct omap_dss_device *dssdev;
2438 dssdev = fbdev->displays[i].dssdev;
2440 if (dssdev->name && strcmp(def_name, dssdev->name) == 0)
2441 return dssdev;
2443 if (strcmp(def_name, dssdev->alias) == 0)
2444 return dssdev;
2445 }
2447 /* def_name given but not found */
2448 return NULL;
2449 }
2451 /* then look for DT alias display0 */
2452 for (i = 0; i < fbdev->num_displays; ++i) {
2453 struct omap_dss_device *dssdev;
2454 int id;
2456 dssdev = fbdev->displays[i].dssdev;
2458 if (dssdev->dev->of_node == NULL)
2459 continue;
2461 id = of_alias_get_id(dssdev->dev->of_node, "display");
2462 if (id == 0)
2463 return dssdev;
2464 }
2466 /* return the first display we have in the list */
2467 return fbdev->displays[0].dssdev;
2468 }
2470 static int omapfb_probe(struct platform_device *pdev)
2471 {
2472 struct omapfb2_device *fbdev = NULL;
2473 int r = 0;
2474 int i;
2475 struct omap_dss_device *def_display;
2476 struct omap_dss_device *dssdev;
2478 DBG("omapfb_probe\n");
2480 if (omapdss_is_initialized() == false)
2481 return -EPROBE_DEFER;
2483 if (pdev->num_resources != 0) {
2484 dev_err(&pdev->dev, "probed for an unknown device\n");
2485 r = -ENODEV;
2486 goto err0;
2487 }
2489 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2490 GFP_KERNEL);
2491 if (fbdev == NULL) {
2492 r = -ENOMEM;
2493 goto err0;
2494 }
2496 if (def_vrfb && !omap_vrfb_supported()) {
2497 def_vrfb = 0;
2498 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2499 "ignoring the module parameter vrfb=y\n");
2500 }
2502 r = omapdss_compat_init();
2503 if (r)
2504 goto err0;
2506 mutex_init(&fbdev->mtx);
2508 fbdev->dev = &pdev->dev;
2509 platform_set_drvdata(pdev, fbdev);
2511 fbdev->num_displays = 0;
2512 dssdev = NULL;
2513 for_each_dss_dev(dssdev) {
2514 struct omapfb_display_data *d;
2516 omap_dss_get_device(dssdev);
2518 if (!dssdev->driver) {
2519 dev_warn(&pdev->dev, "no driver for display: %s\n",
2520 dssdev->name);
2521 omap_dss_put_device(dssdev);
2522 continue;
2523 }
2525 d = &fbdev->displays[fbdev->num_displays++];
2526 d->dssdev = dssdev;
2527 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2528 d->update_mode = OMAPFB_MANUAL_UPDATE;
2529 else
2530 d->update_mode = OMAPFB_AUTO_UPDATE;
2531 }
2533 if (fbdev->num_displays == 0) {
2534 dev_err(&pdev->dev, "no displays\n");
2535 r = -EPROBE_DEFER;
2536 goto cleanup;
2537 }
2539 fbdev->num_overlays = omap_dss_get_num_overlays();
2540 for (i = 0; i < fbdev->num_overlays; i++)
2541 fbdev->overlays[i] = omap_dss_get_overlay(i);
2543 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2544 for (i = 0; i < fbdev->num_managers; i++)
2545 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2547 def_display = omapfb_find_default_display(fbdev);
2548 if (def_display == NULL) {
2549 dev_err(fbdev->dev, "failed to find default display\n");
2550 r = -EPROBE_DEFER;
2551 goto cleanup;
2552 }
2554 r = omapfb_init_connections(fbdev, def_display);
2555 if (r) {
2556 dev_err(fbdev->dev, "failed to init overlay connections\n");
2557 goto cleanup;
2558 }
2560 if (def_mode && strlen(def_mode) > 0) {
2561 if (omapfb_parse_def_modes(fbdev))
2562 dev_warn(&pdev->dev, "cannot parse default modes\n");
2563 } else if (def_display && def_display->driver->set_timings &&
2564 def_display->driver->check_timings) {
2565 struct omap_video_timings t;
2567 r = omapfb_find_best_mode(def_display, &t);
2569 if (r == 0)
2570 def_display->driver->set_timings(def_display, &t);
2571 }
2573 r = omapfb_create_framebuffers(fbdev);
2574 if (r)
2575 goto cleanup;
2577 for (i = 0; i < fbdev->num_managers; i++) {
2578 struct omap_overlay_manager *mgr;
2579 mgr = fbdev->managers[i];
2580 r = mgr->apply(mgr);
2581 if (r)
2582 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2583 }
2585 DBG("mgr->apply'ed\n");
2587 if (def_display) {
2588 r = omapfb_init_display(fbdev, def_display);
2589 if (r) {
2590 dev_err(fbdev->dev,
2591 "failed to initialize default "
2592 "display\n");
2593 goto cleanup;
2594 }
2595 }
2597 DBG("create sysfs for fbs\n");
2598 r = omapfb_create_sysfs(fbdev);
2599 if (r) {
2600 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2601 goto cleanup;
2602 }
2604 if (def_display) {
2605 u16 w, h;
2607 def_display->driver->get_resolution(def_display, &w, &h);
2609 dev_info(fbdev->dev, "using display '%s' mode %dx%d\n",
2610 def_display->name, w, h);
2611 }
2613 /*
2614 * disable creation of new console during suspend.
2615 * this works around a problem where a ctrl-c is needed
2616 * to be entered on the VT to actually get the device
2617 * to continue into the suspend state.
2618 */
2619 pm_set_vt_switch(0);
2621 return 0;
2623 cleanup:
2624 omapfb_free_resources(fbdev);
2625 omapdss_compat_uninit();
2626 err0:
2627 dev_err(&pdev->dev, "failed to setup omapfb\n");
2628 return r;
2629 }
2631 static int __exit omapfb_remove(struct platform_device *pdev)
2632 {
2633 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2635 /* FIXME: wait till completion of pending events */
2637 omapfb_remove_sysfs(fbdev);
2639 omapfb_free_resources(fbdev);
2641 omapdss_compat_uninit();
2643 return 0;
2644 }
2646 static struct platform_driver omapfb_driver = {
2647 .probe = omapfb_probe,
2648 .remove = __exit_p(omapfb_remove),
2649 .driver = {
2650 .name = "omapfb",
2651 .owner = THIS_MODULE,
2652 },
2653 };
2655 module_param_named(mode, def_mode, charp, 0);
2656 module_param_named(vram, def_vram, charp, 0);
2657 module_param_named(rotate, def_rotate, int, 0);
2658 module_param_named(vrfb, def_vrfb, bool, 0);
2659 module_param_named(mirror, def_mirror, bool, 0);
2661 module_platform_driver(omapfb_driver);
2663 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2664 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2665 MODULE_LICENSE("GPL v2");