d62b536e57593d5d46972343f2111c928174ec90
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>
33 #include <video/omapdss.h>
34 #include <video/omapvrfb.h>
36 #include "omapfb.h"
38 #define MODULE_NAME "omapfb"
40 #define OMAPFB_PLANE_XRES_MIN 8
41 #define OMAPFB_PLANE_YRES_MIN 8
43 static char *def_mode;
44 static char *def_vram;
45 static bool def_vrfb;
46 static int def_rotate;
47 static bool def_mirror;
48 static bool auto_update;
49 static unsigned int auto_update_freq;
50 module_param(auto_update, bool, 0);
51 module_param(auto_update_freq, uint, 0644);
53 #ifdef DEBUG
54 bool omapfb_debug;
55 module_param_named(debug, omapfb_debug, bool, 0644);
56 static bool omapfb_test_pattern;
57 module_param_named(test, omapfb_test_pattern, bool, 0644);
58 #endif
60 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
61 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
62 struct omap_dss_device *dssdev);
64 #ifdef DEBUG
65 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
66 {
67 struct fb_var_screeninfo *var = &fbi->var;
68 struct fb_fix_screeninfo *fix = &fbi->fix;
69 void __iomem *addr = fbi->screen_base;
70 const unsigned bytespp = var->bits_per_pixel >> 3;
71 const unsigned line_len = fix->line_length / bytespp;
73 int r = (color >> 16) & 0xff;
74 int g = (color >> 8) & 0xff;
75 int b = (color >> 0) & 0xff;
77 if (var->bits_per_pixel == 16) {
78 u16 __iomem *p = (u16 __iomem *)addr;
79 p += y * line_len + x;
81 r = r * 32 / 256;
82 g = g * 64 / 256;
83 b = b * 32 / 256;
85 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
86 } else if (var->bits_per_pixel == 24) {
87 u8 __iomem *p = (u8 __iomem *)addr;
88 p += (y * line_len + x) * 3;
90 __raw_writeb(b, p + 0);
91 __raw_writeb(g, p + 1);
92 __raw_writeb(r, p + 2);
93 } else if (var->bits_per_pixel == 32) {
94 u32 __iomem *p = (u32 __iomem *)addr;
95 p += y * line_len + x;
96 __raw_writel(color, p);
97 }
98 }
100 static void fill_fb(struct fb_info *fbi)
101 {
102 struct fb_var_screeninfo *var = &fbi->var;
103 const short w = var->xres_virtual;
104 const short h = var->yres_virtual;
105 void __iomem *addr = fbi->screen_base;
106 int y, x;
108 if (!addr)
109 return;
111 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
113 for (y = 0; y < h; y++) {
114 for (x = 0; x < w; x++) {
115 if (x < 20 && y < 20)
116 draw_pixel(fbi, x, y, 0xffffff);
117 else if (x < 20 && (y > 20 && y < h - 20))
118 draw_pixel(fbi, x, y, 0xff);
119 else if (y < 20 && (x > 20 && x < w - 20))
120 draw_pixel(fbi, x, y, 0xff00);
121 else if (x > w - 20 && (y > 20 && y < h - 20))
122 draw_pixel(fbi, x, y, 0xff0000);
123 else if (y > h - 20 && (x > 20 && x < w - 20))
124 draw_pixel(fbi, x, y, 0xffff00);
125 else if (x == 20 || x == w - 20 ||
126 y == 20 || y == h - 20)
127 draw_pixel(fbi, x, y, 0xffffff);
128 else if (x == y || w - x == h - y)
129 draw_pixel(fbi, x, y, 0xff00ff);
130 else if (w - x == y || x == h - y)
131 draw_pixel(fbi, x, y, 0x00ffff);
132 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
133 int t = x * 3 / w;
134 unsigned r = 0, g = 0, b = 0;
135 unsigned c;
136 if (var->bits_per_pixel == 16) {
137 if (t == 0)
138 b = (y % 32) * 256 / 32;
139 else if (t == 1)
140 g = (y % 64) * 256 / 64;
141 else if (t == 2)
142 r = (y % 32) * 256 / 32;
143 } else {
144 if (t == 0)
145 b = (y % 256);
146 else if (t == 1)
147 g = (y % 256);
148 else if (t == 2)
149 r = (y % 256);
150 }
151 c = (r << 16) | (g << 8) | (b << 0);
152 draw_pixel(fbi, x, y, c);
153 } else {
154 draw_pixel(fbi, x, y, 0);
155 }
156 }
157 }
158 }
159 #endif
161 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
162 {
163 const struct vrfb *vrfb = &ofbi->region->vrfb;
164 unsigned offset;
166 switch (rot) {
167 case FB_ROTATE_UR:
168 offset = 0;
169 break;
170 case FB_ROTATE_CW:
171 offset = vrfb->yoffset;
172 break;
173 case FB_ROTATE_UD:
174 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
175 break;
176 case FB_ROTATE_CCW:
177 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
178 break;
179 default:
180 BUG();
181 return 0;
182 }
184 offset *= vrfb->bytespp;
186 return offset;
187 }
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 }
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 }
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 }
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 };
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 }
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;
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 }
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 }
310 int omapfb_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;
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 }
327 return -EINVAL;
328 }
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 }
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_ARGB32;
366 break;
367 default:
368 return -EINVAL;
369 }
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 }
380 return -EINVAL;
381 }
382 EXPORT_SYMBOL(omapfb_mode_to_dss_mode);
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 = omapfb_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;
673 u32 w = 0, h = 0;
675 DBG("check_fb_var %d\n", ofbi->id);
677 WARN_ON(!atomic_read(&ofbi->region->lock_count));
679 r = omapfb_mode_to_dss_mode(var, &mode);
680 if (r) {
681 DBG("cannot convert var to omap dss mode\n");
682 return r;
683 }
685 for (i = 0; i < ofbi->num_overlays; ++i) {
686 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
687 DBG("invalid mode\n");
688 return -EINVAL;
689 }
690 }
692 if (var->rotate > 3)
693 return -EINVAL;
695 if (check_fb_res_bounds(var))
696 return -EINVAL;
698 /* When no memory is allocated ignore the size check */
699 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
700 return -EINVAL;
702 if (var->xres + var->xoffset > var->xres_virtual)
703 var->xoffset = var->xres_virtual - var->xres;
704 if (var->yres + var->yoffset > var->yres_virtual)
705 var->yoffset = var->yres_virtual - var->yres;
707 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
708 var->xres, var->yres,
709 var->xres_virtual, var->yres_virtual);
711 if (display)
712 omapdss_display_get_dimensions(display, &w, &h);
714 if (w && h) {
715 var->width = DIV_ROUND_CLOSEST(w, 1000);
716 var->height = DIV_ROUND_CLOSEST(h, 1000);
717 } else {
718 var->height = -1;
719 var->width = -1;
720 }
722 var->grayscale = 0;
724 if (display && display->driver->get_timings) {
725 struct omap_video_timings timings;
726 display->driver->get_timings(display, &timings);
728 /* pixclock in ps, the rest in pixclock */
729 var->pixclock = timings.pixel_clock != 0 ?
730 KHZ2PICOS(timings.pixel_clock) :
731 0;
732 var->left_margin = timings.hbp;
733 var->right_margin = timings.hfp;
734 var->upper_margin = timings.vbp;
735 var->lower_margin = timings.vfp;
736 var->hsync_len = timings.hsw;
737 var->vsync_len = timings.vsw;
738 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
739 FB_SYNC_HOR_HIGH_ACT : 0;
740 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
741 FB_SYNC_VERT_HIGH_ACT : 0;
742 var->vmode = timings.interlace ?
743 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
744 } else {
745 var->pixclock = 0;
746 var->left_margin = 0;
747 var->right_margin = 0;
748 var->upper_margin = 0;
749 var->lower_margin = 0;
750 var->hsync_len = 0;
751 var->vsync_len = 0;
752 var->sync = 0;
753 var->vmode = FB_VMODE_NONINTERLACED;
754 }
756 return 0;
757 }
759 /*
760 * ---------------------------------------------------------------------------
761 * fbdev framework callbacks
762 * ---------------------------------------------------------------------------
763 */
764 static int omapfb_open(struct fb_info *fbi, int user)
765 {
766 return 0;
767 }
769 static int omapfb_release(struct fb_info *fbi, int user)
770 {
771 return 0;
772 }
774 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
775 const struct fb_fix_screeninfo *fix, int rotation)
776 {
777 unsigned offset;
779 offset = var->yoffset * fix->line_length +
780 var->xoffset * (var->bits_per_pixel >> 3);
782 return offset;
783 }
785 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
786 const struct fb_fix_screeninfo *fix, int rotation)
787 {
788 unsigned offset;
790 if (rotation == FB_ROTATE_UD)
791 offset = (var->yres_virtual - var->yres) *
792 fix->line_length;
793 else if (rotation == FB_ROTATE_CW)
794 offset = (var->yres_virtual - var->yres) *
795 (var->bits_per_pixel >> 3);
796 else
797 offset = 0;
799 if (rotation == FB_ROTATE_UR)
800 offset += var->yoffset * fix->line_length +
801 var->xoffset * (var->bits_per_pixel >> 3);
802 else if (rotation == FB_ROTATE_UD)
803 offset -= var->yoffset * fix->line_length +
804 var->xoffset * (var->bits_per_pixel >> 3);
805 else if (rotation == FB_ROTATE_CW)
806 offset -= var->xoffset * fix->line_length +
807 var->yoffset * (var->bits_per_pixel >> 3);
808 else if (rotation == FB_ROTATE_CCW)
809 offset += var->xoffset * fix->line_length +
810 var->yoffset * (var->bits_per_pixel >> 3);
812 return offset;
813 }
815 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
816 const struct fb_var_screeninfo *var,
817 const struct fb_fix_screeninfo *fix,
818 int rotation, u32 *paddr)
819 {
820 u32 data_start_p;
821 int offset;
823 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
824 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
825 else
826 data_start_p = omapfb_get_region_paddr(ofbi);
828 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
829 offset = calc_rotation_offset_vrfb(var, fix, rotation);
830 else
831 offset = calc_rotation_offset_dma(var, fix, rotation);
833 data_start_p += offset;
835 if (offset)
836 DBG("offset %d, %d = %d\n",
837 var->xoffset, var->yoffset, offset);
839 DBG("paddr %x\n", data_start_p);
841 *paddr = data_start_p;
842 }
844 /* setup overlay according to the fb */
845 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
846 u16 posx, u16 posy, u16 outw, u16 outh)
847 {
848 int r = 0;
849 struct omapfb_info *ofbi = FB2OFB(fbi);
850 struct fb_var_screeninfo *var = &fbi->var;
851 struct fb_fix_screeninfo *fix = &fbi->fix;
852 enum omap_color_mode mode = 0;
853 u32 data_start_p = 0;
854 struct omap_overlay_info info;
855 int xres, yres;
856 int screen_width;
857 int mirror;
858 int rotation = var->rotate;
859 int i;
861 WARN_ON(!atomic_read(&ofbi->region->lock_count));
863 for (i = 0; i < ofbi->num_overlays; i++) {
864 if (ovl != ofbi->overlays[i])
865 continue;
867 rotation = (rotation + ofbi->rotation[i]) % 4;
868 break;
869 }
871 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
872 posx, posy, outw, outh);
874 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
875 xres = var->yres;
876 yres = var->xres;
877 } else {
878 xres = var->xres;
879 yres = var->yres;
880 }
882 if (ofbi->region->size)
883 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
885 r = omapfb_mode_to_dss_mode(var, &mode);
886 if (r) {
887 DBG("omapfb_mode_to_dss_mode failed");
888 goto err;
889 }
891 switch (var->nonstd) {
892 case OMAPFB_COLOR_YUV422:
893 case OMAPFB_COLOR_YUY422:
894 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
895 screen_width = fix->line_length
896 / (var->bits_per_pixel >> 2);
897 break;
898 }
899 default:
900 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
901 break;
902 }
904 ovl->get_overlay_info(ovl, &info);
906 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
907 mirror = 0;
908 else
909 mirror = ofbi->mirror;
911 info.paddr = data_start_p;
912 info.screen_width = screen_width;
913 info.width = xres;
914 info.height = yres;
915 info.color_mode = mode;
916 info.rotation_type = ofbi->rotation_type;
917 info.rotation = rotation;
918 info.mirror = mirror;
920 info.pos_x = posx;
921 info.pos_y = posy;
922 info.out_width = outw;
923 info.out_height = outh;
925 r = ovl->set_overlay_info(ovl, &info);
926 if (r) {
927 DBG("ovl->setup_overlay_info failed\n");
928 goto err;
929 }
931 return 0;
933 err:
934 DBG("setup_overlay failed\n");
935 return r;
936 }
938 /* apply var to the overlay */
939 int omapfb_apply_changes(struct fb_info *fbi, int init)
940 {
941 int r = 0;
942 struct omapfb_info *ofbi = FB2OFB(fbi);
943 struct fb_var_screeninfo *var = &fbi->var;
944 struct omap_overlay *ovl;
945 u16 posx, posy;
946 u16 outw, outh;
947 int i;
949 #ifdef DEBUG
950 if (omapfb_test_pattern)
951 fill_fb(fbi);
952 #endif
954 WARN_ON(!atomic_read(&ofbi->region->lock_count));
956 for (i = 0; i < ofbi->num_overlays; i++) {
957 ovl = ofbi->overlays[i];
959 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
961 if (ofbi->region->size == 0) {
962 /* the fb is not available. disable the overlay */
963 omapfb_overlay_enable(ovl, 0);
964 if (!init && ovl->manager)
965 ovl->manager->apply(ovl->manager);
966 continue;
967 }
969 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
970 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
971 if (rotation == FB_ROTATE_CW ||
972 rotation == FB_ROTATE_CCW) {
973 outw = var->yres;
974 outh = var->xres;
975 } else {
976 outw = var->xres;
977 outh = var->yres;
978 }
979 } else {
980 struct omap_overlay_info info;
981 ovl->get_overlay_info(ovl, &info);
982 outw = info.out_width;
983 outh = info.out_height;
984 }
986 if (init) {
987 posx = 0;
988 posy = 0;
989 } else {
990 struct omap_overlay_info info;
991 ovl->get_overlay_info(ovl, &info);
992 posx = info.pos_x;
993 posy = info.pos_y;
994 }
996 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
997 if (r)
998 goto err;
1000 if (!init && ovl->manager)
1001 ovl->manager->apply(ovl->manager);
1002 }
1003 return 0;
1004 err:
1005 DBG("apply_changes failed\n");
1006 return r;
1007 }
1009 /* checks var and eventually tweaks it to something supported,
1010 * DO NOT MODIFY PAR */
1011 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1012 {
1013 struct omapfb_info *ofbi = FB2OFB(fbi);
1014 int r;
1016 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1018 omapfb_get_mem_region(ofbi->region);
1020 r = check_fb_var(fbi, var);
1022 omapfb_put_mem_region(ofbi->region);
1024 return r;
1025 }
1027 void omapfb_fb2dss_timings(struct fb_videomode *fb_timings,
1028 struct omap_video_timings *dss_timings)
1029 {
1030 dss_timings->x_res = fb_timings->xres;
1031 dss_timings->y_res = fb_timings->yres;
1032 if (fb_timings->vmode & FB_VMODE_INTERLACED)
1033 dss_timings->y_res /= 2;
1034 dss_timings->pixel_clock = fb_timings->pixclock ?
1035 PICOS2KHZ(fb_timings->pixclock) : 0;
1036 dss_timings->hfp = fb_timings->right_margin;
1037 dss_timings->hbp = fb_timings->left_margin;
1038 dss_timings->hsw = fb_timings->hsync_len;
1039 dss_timings->vfp = fb_timings->lower_margin;
1040 dss_timings->vbp = fb_timings->upper_margin;
1041 dss_timings->vsw = fb_timings->vsync_len;
1042 }
1043 EXPORT_SYMBOL(omapfb_fb2dss_timings);
1045 void omapfb_dss2fb_timings(struct omap_video_timings *dss_timings,
1046 struct fb_videomode *fb_timings)
1047 {
1048 memset(fb_timings, 0, sizeof(*fb_timings));
1049 fb_timings->xres = dss_timings->x_res;
1050 fb_timings->yres = dss_timings->y_res;
1051 fb_timings->pixclock = dss_timings->pixel_clock ?
1052 KHZ2PICOS(dss_timings->pixel_clock) : 0;
1053 fb_timings->right_margin = dss_timings->hfp;
1054 fb_timings->left_margin = dss_timings->hbp;
1055 fb_timings->hsync_len = dss_timings->hsw;
1056 fb_timings->lower_margin = dss_timings->vfp;
1057 fb_timings->upper_margin = dss_timings->vbp;
1058 fb_timings->vsync_len = dss_timings->vsw;
1059 }
1060 EXPORT_SYMBOL(omapfb_dss2fb_timings);
1062 /* set the video mode according to info->var */
1063 static int omapfb_set_par(struct fb_info *fbi)
1064 {
1065 struct omapfb_info *ofbi = FB2OFB(fbi);
1066 int r;
1068 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1070 omapfb_get_mem_region(ofbi->region);
1072 set_fb_fix(fbi);
1074 r = setup_vrfb_rotation(fbi);
1075 if (r)
1076 goto out;
1078 r = omapfb_apply_changes(fbi, 0);
1080 out:
1081 omapfb_put_mem_region(ofbi->region);
1083 return r;
1084 }
1086 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1087 struct fb_info *fbi)
1088 {
1089 struct omapfb_info *ofbi = FB2OFB(fbi);
1090 struct fb_var_screeninfo new_var;
1091 int r;
1093 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1095 if (var->xoffset == fbi->var.xoffset &&
1096 var->yoffset == fbi->var.yoffset)
1097 return 0;
1099 new_var = fbi->var;
1100 new_var.xoffset = var->xoffset;
1101 new_var.yoffset = var->yoffset;
1103 fbi->var = new_var;
1105 omapfb_get_mem_region(ofbi->region);
1107 r = omapfb_apply_changes(fbi, 0);
1109 omapfb_put_mem_region(ofbi->region);
1111 return r;
1112 }
1114 static void mmap_user_open(struct vm_area_struct *vma)
1115 {
1116 struct omapfb2_mem_region *rg = vma->vm_private_data;
1118 omapfb_get_mem_region(rg);
1119 atomic_inc(&rg->map_count);
1120 omapfb_put_mem_region(rg);
1121 }
1123 static void mmap_user_close(struct vm_area_struct *vma)
1124 {
1125 struct omapfb2_mem_region *rg = vma->vm_private_data;
1127 omapfb_get_mem_region(rg);
1128 atomic_dec(&rg->map_count);
1129 omapfb_put_mem_region(rg);
1130 }
1132 static struct vm_operations_struct mmap_user_ops = {
1133 .open = mmap_user_open,
1134 .close = mmap_user_close,
1135 };
1137 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1138 {
1139 struct omapfb_info *ofbi = FB2OFB(fbi);
1140 struct fb_fix_screeninfo *fix = &fbi->fix;
1141 struct omapfb2_mem_region *rg;
1142 unsigned long off;
1143 unsigned long start;
1144 u32 len;
1145 int r = -EINVAL;
1147 if (vma->vm_end - vma->vm_start == 0)
1148 return 0;
1149 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1150 return -EINVAL;
1151 off = vma->vm_pgoff << PAGE_SHIFT;
1153 rg = omapfb_get_mem_region(ofbi->region);
1155 start = omapfb_get_region_paddr(ofbi);
1156 len = fix->smem_len;
1157 if (off >= len)
1158 goto error;
1159 if ((vma->vm_end - vma->vm_start + off) > len)
1160 goto error;
1162 off += start;
1164 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1166 vma->vm_pgoff = off >> PAGE_SHIFT;
1167 /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
1168 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1169 vma->vm_ops = &mmap_user_ops;
1170 vma->vm_private_data = rg;
1171 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1172 vma->vm_end - vma->vm_start,
1173 vma->vm_page_prot)) {
1174 r = -EAGAIN;
1175 goto error;
1176 }
1178 /* vm_ops.open won't be called for mmap itself. */
1179 atomic_inc(&rg->map_count);
1181 omapfb_put_mem_region(rg);
1183 return 0;
1185 error:
1186 omapfb_put_mem_region(ofbi->region);
1188 return r;
1189 }
1191 /* Store a single color palette entry into a pseudo palette or the hardware
1192 * palette if one is available. For now we support only 16bpp and thus store
1193 * the entry only to the pseudo palette.
1194 */
1195 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1196 u_int blue, u_int transp, int update_hw_pal)
1197 {
1198 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1199 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1200 struct fb_var_screeninfo *var = &fbi->var;
1201 int r = 0;
1203 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1205 /*switch (plane->color_mode) {*/
1206 switch (mode) {
1207 case OMAPFB_COLOR_YUV422:
1208 case OMAPFB_COLOR_YUV420:
1209 case OMAPFB_COLOR_YUY422:
1210 r = -EINVAL;
1211 break;
1212 case OMAPFB_COLOR_CLUT_8BPP:
1213 case OMAPFB_COLOR_CLUT_4BPP:
1214 case OMAPFB_COLOR_CLUT_2BPP:
1215 case OMAPFB_COLOR_CLUT_1BPP:
1216 /*
1217 if (fbdev->ctrl->setcolreg)
1218 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1219 transp, update_hw_pal);
1220 */
1221 /* Fallthrough */
1222 r = -EINVAL;
1223 break;
1224 case OMAPFB_COLOR_RGB565:
1225 case OMAPFB_COLOR_RGB444:
1226 case OMAPFB_COLOR_RGB24P:
1227 case OMAPFB_COLOR_RGB24U:
1228 if (r != 0)
1229 break;
1231 if (regno < 16) {
1232 u32 pal;
1233 pal = ((red >> (16 - var->red.length)) <<
1234 var->red.offset) |
1235 ((green >> (16 - var->green.length)) <<
1236 var->green.offset) |
1237 (blue >> (16 - var->blue.length));
1238 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1239 }
1240 break;
1241 default:
1242 BUG();
1243 }
1244 return r;
1245 }
1247 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1248 u_int transp, struct fb_info *info)
1249 {
1250 DBG("setcolreg\n");
1252 return _setcolreg(info, regno, red, green, blue, transp, 1);
1253 }
1255 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1256 {
1257 int count, index, r;
1258 u16 *red, *green, *blue, *transp;
1259 u16 trans = 0xffff;
1261 DBG("setcmap\n");
1263 red = cmap->red;
1264 green = cmap->green;
1265 blue = cmap->blue;
1266 transp = cmap->transp;
1267 index = cmap->start;
1269 for (count = 0; count < cmap->len; count++) {
1270 if (transp)
1271 trans = *transp++;
1272 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1273 count == cmap->len - 1);
1274 if (r != 0)
1275 return r;
1276 }
1278 return 0;
1279 }
1281 static int omapfb_blank(int blank, struct fb_info *fbi)
1282 {
1283 struct omapfb_info *ofbi = FB2OFB(fbi);
1284 struct omapfb2_device *fbdev = ofbi->fbdev;
1285 struct omap_dss_device *display = fb2display(fbi);
1286 struct omapfb_display_data *d;
1287 int r = 0;
1289 if (!display)
1290 return -EINVAL;
1292 omapfb_lock(fbdev);
1294 d = get_display_data(fbdev, display);
1296 switch (blank) {
1297 case FB_BLANK_UNBLANK:
1298 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1299 goto exit;
1301 r = display->driver->enable(display);
1303 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1304 d->update_mode == OMAPFB_AUTO_UPDATE &&
1305 !d->auto_update_work_enabled)
1306 omapfb_start_auto_update(fbdev, display);
1308 break;
1310 case FB_BLANK_NORMAL:
1311 /* FB_BLANK_NORMAL could be implemented.
1312 * Needs DSS additions. */
1313 case FB_BLANK_VSYNC_SUSPEND:
1314 case FB_BLANK_HSYNC_SUSPEND:
1315 case FB_BLANK_POWERDOWN:
1316 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1317 goto exit;
1319 if (d->auto_update_work_enabled)
1320 omapfb_stop_auto_update(fbdev, display);
1322 display->driver->disable(display);
1324 break;
1326 default:
1327 r = -EINVAL;
1328 }
1330 exit:
1331 omapfb_unlock(fbdev);
1333 return r;
1334 }
1336 #if 0
1337 /* XXX fb_read and fb_write are needed for VRFB */
1338 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1339 size_t count, loff_t *ppos)
1340 {
1341 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1342 /* XXX needed for VRFB */
1343 return count;
1344 }
1345 #endif
1347 static struct fb_ops omapfb_ops = {
1348 .owner = THIS_MODULE,
1349 .fb_open = omapfb_open,
1350 .fb_release = omapfb_release,
1351 .fb_fillrect = cfb_fillrect,
1352 .fb_copyarea = cfb_copyarea,
1353 .fb_imageblit = cfb_imageblit,
1354 .fb_blank = omapfb_blank,
1355 .fb_ioctl = omapfb_ioctl,
1356 .fb_check_var = omapfb_check_var,
1357 .fb_set_par = omapfb_set_par,
1358 .fb_pan_display = omapfb_pan_display,
1359 .fb_mmap = omapfb_mmap,
1360 .fb_setcolreg = omapfb_setcolreg,
1361 .fb_setcmap = omapfb_setcmap,
1362 /*.fb_write = omapfb_write,*/
1363 };
1365 static void omapfb_free_fbmem(struct fb_info *fbi)
1366 {
1367 struct omapfb_info *ofbi = FB2OFB(fbi);
1368 struct omapfb2_device *fbdev = ofbi->fbdev;
1369 struct omapfb2_mem_region *rg;
1371 rg = ofbi->region;
1373 if (rg->token == NULL)
1374 return;
1376 WARN_ON(atomic_read(&rg->map_count));
1378 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1379 /* unmap the 0 angle rotation */
1380 if (rg->vrfb.vaddr[0]) {
1381 iounmap(rg->vrfb.vaddr[0]);
1382 rg->vrfb.vaddr[0] = NULL;
1383 }
1385 omap_vrfb_release_ctx(&rg->vrfb);
1386 }
1388 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1389 &rg->attrs);
1391 rg->token = NULL;
1392 rg->vaddr = NULL;
1393 rg->paddr = 0;
1394 rg->alloc = 0;
1395 rg->size = 0;
1396 }
1398 static void clear_fb_info(struct fb_info *fbi)
1399 {
1400 memset(&fbi->var, 0, sizeof(fbi->var));
1401 memset(&fbi->fix, 0, sizeof(fbi->fix));
1402 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1403 }
1405 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1406 {
1407 int i;
1409 DBG("free all fbmem\n");
1411 for (i = 0; i < fbdev->num_fbs; i++) {
1412 struct fb_info *fbi = fbdev->fbs[i];
1413 omapfb_free_fbmem(fbi);
1414 clear_fb_info(fbi);
1415 }
1417 return 0;
1418 }
1420 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1421 unsigned long paddr)
1422 {
1423 struct omapfb_info *ofbi = FB2OFB(fbi);
1424 struct omapfb2_device *fbdev = ofbi->fbdev;
1425 struct omapfb2_mem_region *rg;
1426 void *token;
1427 DEFINE_DMA_ATTRS(attrs);
1428 dma_addr_t dma_handle;
1429 int r;
1431 rg = ofbi->region;
1433 rg->paddr = 0;
1434 rg->vaddr = NULL;
1435 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1436 rg->size = 0;
1437 rg->type = 0;
1438 rg->alloc = false;
1439 rg->map = false;
1441 size = PAGE_ALIGN(size);
1443 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
1445 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1446 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
1448 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1450 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1451 GFP_KERNEL, &attrs);
1453 if (token == NULL) {
1454 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1455 return -ENOMEM;
1456 }
1458 DBG("allocated VRAM paddr %lx, vaddr %p\n",
1459 (unsigned long)dma_handle, token);
1461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1462 r = omap_vrfb_request_ctx(&rg->vrfb);
1463 if (r) {
1464 dma_free_attrs(fbdev->dev, size, token, dma_handle,
1465 &attrs);
1466 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1467 return r;
1468 }
1469 }
1471 rg->attrs = attrs;
1472 rg->token = token;
1473 rg->dma_handle = dma_handle;
1475 rg->paddr = (unsigned long)dma_handle;
1476 rg->vaddr = (void __iomem *)token;
1477 rg->size = size;
1478 rg->alloc = 1;
1480 return 0;
1481 }
1483 /* allocate fbmem using display resolution as reference */
1484 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1485 unsigned long paddr)
1486 {
1487 struct omapfb_info *ofbi = FB2OFB(fbi);
1488 struct omapfb2_device *fbdev = ofbi->fbdev;
1489 struct omap_dss_device *display;
1490 int bytespp;
1492 display = fb2display(fbi);
1494 if (!display)
1495 return 0;
1497 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1498 case 16:
1499 bytespp = 2;
1500 break;
1501 case 24:
1502 bytespp = 4;
1503 break;
1504 default:
1505 bytespp = 4;
1506 break;
1507 }
1509 if (!size) {
1510 u16 w, h;
1512 display->driver->get_resolution(display, &w, &h);
1514 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1515 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1516 omap_vrfb_min_phys_size(h, w, bytespp));
1518 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1519 w * h * bytespp, size);
1520 } else {
1521 size = w * h * bytespp;
1522 }
1523 }
1525 if (!size)
1526 return 0;
1528 return omapfb_alloc_fbmem(fbi, size, paddr);
1529 }
1531 static int omapfb_parse_vram_param(const char *param, int max_entries,
1532 unsigned long *sizes, unsigned long *paddrs)
1533 {
1534 int fbnum;
1535 unsigned long size;
1536 unsigned long paddr = 0;
1537 char *p, *start;
1539 start = (char *)param;
1541 while (1) {
1542 p = start;
1544 fbnum = simple_strtoul(p, &p, 10);
1546 if (p == start)
1547 return -EINVAL;
1549 if (*p != ':')
1550 return -EINVAL;
1552 if (fbnum >= max_entries)
1553 return -EINVAL;
1555 size = memparse(p + 1, &p);
1557 if (!size)
1558 return -EINVAL;
1560 paddr = 0;
1562 if (*p == '@') {
1563 paddr = simple_strtoul(p + 1, &p, 16);
1565 if (!paddr)
1566 return -EINVAL;
1568 }
1570 WARN_ONCE(paddr,
1571 "reserving memory at predefined address not supported\n");
1573 paddrs[fbnum] = paddr;
1574 sizes[fbnum] = size;
1576 if (*p == 0)
1577 break;
1579 if (*p != ',')
1580 return -EINVAL;
1582 ++p;
1584 start = p;
1585 }
1587 return 0;
1588 }
1590 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1591 {
1592 int i, r;
1593 unsigned long vram_sizes[10];
1594 unsigned long vram_paddrs[10];
1596 memset(&vram_sizes, 0, sizeof(vram_sizes));
1597 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1599 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1600 vram_sizes, vram_paddrs)) {
1601 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1603 memset(&vram_sizes, 0, sizeof(vram_sizes));
1604 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1605 }
1607 if (fbdev->dev->platform_data) {
1608 struct omapfb_platform_data *opd;
1609 opd = fbdev->dev->platform_data;
1610 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1611 if (!vram_sizes[i]) {
1612 unsigned long size;
1613 unsigned long paddr;
1615 size = opd->mem_desc.region[i].size;
1616 paddr = opd->mem_desc.region[i].paddr;
1618 vram_sizes[i] = size;
1619 vram_paddrs[i] = paddr;
1620 }
1621 }
1622 }
1624 for (i = 0; i < fbdev->num_fbs; i++) {
1625 /* allocate memory automatically only for fb0, or if
1626 * excplicitly defined with vram or plat data option */
1627 if (i == 0 || vram_sizes[i] != 0) {
1628 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1629 vram_sizes[i], vram_paddrs[i]);
1631 if (r)
1632 return r;
1633 }
1634 }
1636 for (i = 0; i < fbdev->num_fbs; i++) {
1637 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1638 struct omapfb2_mem_region *rg;
1639 rg = ofbi->region;
1641 DBG("region%d phys %08x virt %p size=%lu\n",
1642 i,
1643 rg->paddr,
1644 rg->vaddr,
1645 rg->size);
1646 }
1648 return 0;
1649 }
1651 static void omapfb_clear_fb(struct fb_info *fbi)
1652 {
1653 const struct fb_fillrect rect = {
1654 .dx = 0,
1655 .dy = 0,
1656 .width = fbi->var.xres_virtual,
1657 .height = fbi->var.yres_virtual,
1658 .color = 0,
1659 .rop = ROP_COPY,
1660 };
1662 cfb_fillrect(fbi, &rect);
1663 }
1665 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1666 {
1667 struct omapfb_info *ofbi = FB2OFB(fbi);
1668 struct omapfb2_device *fbdev = ofbi->fbdev;
1669 struct omapfb2_mem_region *rg = ofbi->region;
1670 unsigned long old_size = rg->size;
1671 unsigned long old_paddr = rg->paddr;
1672 int old_type = rg->type;
1673 int r;
1675 if (type != OMAPFB_MEMTYPE_SDRAM)
1676 return -EINVAL;
1678 size = PAGE_ALIGN(size);
1680 if (old_size == size && old_type == type)
1681 return 0;
1683 omapfb_free_fbmem(fbi);
1685 if (size == 0) {
1686 clear_fb_info(fbi);
1687 return 0;
1688 }
1690 r = omapfb_alloc_fbmem(fbi, size, 0);
1692 if (r) {
1693 if (old_size)
1694 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1696 if (rg->size == 0)
1697 clear_fb_info(fbi);
1699 return r;
1700 }
1702 if (old_size == size)
1703 return 0;
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 }
1730 omapfb_clear_fb(fbi);
1732 return 0;
1733 err:
1734 omapfb_free_fbmem(fbi);
1735 clear_fb_info(fbi);
1736 return r;
1737 }
1739 static void omapfb_auto_update_work(struct work_struct *work)
1740 {
1741 struct omap_dss_device *dssdev;
1742 struct omap_dss_driver *dssdrv;
1743 struct omapfb_display_data *d;
1744 u16 w, h;
1745 unsigned int freq;
1746 struct omapfb2_device *fbdev;
1748 d = container_of(work, struct omapfb_display_data,
1749 auto_update_work.work);
1751 dssdev = d->dssdev;
1752 dssdrv = dssdev->driver;
1753 fbdev = d->fbdev;
1755 if (!dssdrv || !dssdrv->update)
1756 return;
1758 if (dssdrv->sync)
1759 dssdrv->sync(dssdev);
1761 dssdrv->get_resolution(dssdev, &w, &h);
1762 dssdrv->update(dssdev, 0, 0, w, h);
1764 freq = auto_update_freq;
1765 if (freq == 0)
1766 freq = 20;
1767 queue_delayed_work(fbdev->auto_update_wq,
1768 &d->auto_update_work, HZ / freq);
1769 }
1771 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1772 struct omap_dss_device *display)
1773 {
1774 struct omapfb_display_data *d;
1776 if (fbdev->auto_update_wq == NULL) {
1777 struct workqueue_struct *wq;
1779 wq = create_singlethread_workqueue("omapfb_auto_update");
1781 if (wq == NULL) {
1782 dev_err(fbdev->dev, "Failed to create workqueue for "
1783 "auto-update\n");
1784 return;
1785 }
1787 fbdev->auto_update_wq = wq;
1788 }
1790 d = get_display_data(fbdev, display);
1792 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1794 d->auto_update_work_enabled = true;
1796 omapfb_auto_update_work(&d->auto_update_work.work);
1797 }
1799 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1800 struct omap_dss_device *display)
1801 {
1802 struct omapfb_display_data *d;
1804 d = get_display_data(fbdev, display);
1806 cancel_delayed_work_sync(&d->auto_update_work);
1808 d->auto_update_work_enabled = false;
1809 }
1811 /* initialize fb_info, var, fix to something sane based on the display */
1812 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1813 {
1814 struct fb_var_screeninfo *var = &fbi->var;
1815 struct omap_dss_device *display = fb2display(fbi);
1816 struct omapfb_info *ofbi = FB2OFB(fbi);
1817 int r = 0;
1819 fbi->fbops = &omapfb_ops;
1820 fbi->flags = FBINFO_FLAG_DEFAULT;
1821 fbi->pseudo_palette = fbdev->pseudo_palette;
1823 if (ofbi->region->size == 0) {
1824 clear_fb_info(fbi);
1825 return 0;
1826 }
1828 var->nonstd = 0;
1829 var->bits_per_pixel = 0;
1831 var->rotate = def_rotate;
1833 if (display) {
1834 u16 w, h;
1835 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1837 display->driver->get_resolution(display, &w, &h);
1839 if (rotation == FB_ROTATE_CW ||
1840 rotation == FB_ROTATE_CCW) {
1841 var->xres = h;
1842 var->yres = w;
1843 } else {
1844 var->xres = w;
1845 var->yres = h;
1846 }
1848 var->xres_virtual = var->xres;
1849 var->yres_virtual = var->yres;
1851 if (!var->bits_per_pixel) {
1852 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1853 case 16:
1854 var->bits_per_pixel = 16;
1855 break;
1856 case 24:
1857 var->bits_per_pixel = 32;
1858 break;
1859 default:
1860 dev_err(fbdev->dev, "illegal display "
1861 "bpp\n");
1862 return -EINVAL;
1863 }
1864 }
1865 } else {
1866 /* if there's no display, let's just guess some basic values */
1867 var->xres = 320;
1868 var->yres = 240;
1869 var->xres_virtual = var->xres;
1870 var->yres_virtual = var->yres;
1871 if (!var->bits_per_pixel)
1872 var->bits_per_pixel = 16;
1873 }
1875 r = check_fb_var(fbi, var);
1876 if (r)
1877 goto err;
1879 set_fb_fix(fbi);
1880 r = setup_vrfb_rotation(fbi);
1881 if (r)
1882 goto err;
1884 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1885 if (r)
1886 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1888 err:
1889 return r;
1890 }
1892 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1893 {
1894 fb_dealloc_cmap(&fbi->cmap);
1895 }
1898 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1899 {
1900 int i;
1902 DBG("free_resources\n");
1904 if (fbdev == NULL)
1905 return;
1907 for (i = 0; i < fbdev->num_fbs; i++)
1908 unregister_framebuffer(fbdev->fbs[i]);
1910 /* free the reserved fbmem */
1911 omapfb_free_all_fbmem(fbdev);
1913 for (i = 0; i < fbdev->num_fbs; i++) {
1914 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1915 framebuffer_release(fbdev->fbs[i]);
1916 }
1918 for (i = 0; i < fbdev->num_displays; i++) {
1919 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1921 if (fbdev->displays[i].auto_update_work_enabled)
1922 omapfb_stop_auto_update(fbdev, dssdev);
1924 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1925 dssdev->driver->disable(dssdev);
1927 omap_dss_put_device(dssdev);
1928 }
1930 if (fbdev->auto_update_wq != NULL) {
1931 flush_workqueue(fbdev->auto_update_wq);
1932 destroy_workqueue(fbdev->auto_update_wq);
1933 fbdev->auto_update_wq = NULL;
1934 }
1936 dev_set_drvdata(fbdev->dev, NULL);
1937 }
1939 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1940 {
1941 int r, i;
1943 fbdev->num_fbs = 0;
1945 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1947 /* allocate fb_infos */
1948 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1949 struct fb_info *fbi;
1950 struct omapfb_info *ofbi;
1952 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1953 fbdev->dev);
1955 if (fbi == NULL) {
1956 dev_err(fbdev->dev,
1957 "unable to allocate memory for plane info\n");
1958 return -ENOMEM;
1959 }
1961 clear_fb_info(fbi);
1963 fbdev->fbs[i] = fbi;
1965 ofbi = FB2OFB(fbi);
1966 ofbi->fbdev = fbdev;
1967 ofbi->id = i;
1969 ofbi->region = &fbdev->regions[i];
1970 ofbi->region->id = i;
1971 init_rwsem(&ofbi->region->lock);
1973 /* assign these early, so that fb alloc can use them */
1974 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1975 OMAP_DSS_ROT_DMA;
1976 ofbi->mirror = def_mirror;
1978 fbdev->num_fbs++;
1979 }
1981 DBG("fb_infos allocated\n");
1983 /* assign overlays for the fbs */
1984 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1985 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1987 ofbi->overlays[0] = fbdev->overlays[i];
1988 ofbi->num_overlays = 1;
1989 }
1991 /* allocate fb memories */
1992 r = omapfb_allocate_all_fbs(fbdev);
1993 if (r) {
1994 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1995 return r;
1996 }
1998 DBG("fbmems allocated\n");
2000 /* setup fb_infos */
2001 for (i = 0; i < fbdev->num_fbs; i++) {
2002 struct fb_info *fbi = fbdev->fbs[i];
2003 struct omapfb_info *ofbi = FB2OFB(fbi);
2005 omapfb_get_mem_region(ofbi->region);
2006 r = omapfb_fb_init(fbdev, fbi);
2007 omapfb_put_mem_region(ofbi->region);
2009 if (r) {
2010 dev_err(fbdev->dev, "failed to setup fb_info\n");
2011 return r;
2012 }
2013 }
2015 for (i = 0; i < fbdev->num_fbs; i++) {
2016 struct fb_info *fbi = fbdev->fbs[i];
2017 struct omapfb_info *ofbi = FB2OFB(fbi);
2019 if (ofbi->region->size == 0)
2020 continue;
2022 omapfb_clear_fb(fbi);
2023 }
2025 DBG("fb_infos initialized\n");
2027 for (i = 0; i < fbdev->num_fbs; i++) {
2028 r = register_framebuffer(fbdev->fbs[i]);
2029 if (r != 0) {
2030 dev_err(fbdev->dev,
2031 "registering framebuffer %d failed\n", i);
2032 return r;
2033 }
2034 }
2036 DBG("framebuffers registered\n");
2038 for (i = 0; i < fbdev->num_fbs; i++) {
2039 struct fb_info *fbi = fbdev->fbs[i];
2040 struct omapfb_info *ofbi = FB2OFB(fbi);
2042 omapfb_get_mem_region(ofbi->region);
2043 r = omapfb_apply_changes(fbi, 1);
2044 omapfb_put_mem_region(ofbi->region);
2046 if (r) {
2047 dev_err(fbdev->dev, "failed to change mode\n");
2048 return r;
2049 }
2050 }
2052 /* Enable fb0 */
2053 if (fbdev->num_fbs > 0) {
2054 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2056 if (ofbi->num_overlays > 0) {
2057 struct omap_overlay *ovl = ofbi->overlays[0];
2059 ovl->manager->apply(ovl->manager);
2061 r = omapfb_overlay_enable(ovl, 1);
2063 if (r) {
2064 dev_err(fbdev->dev,
2065 "failed to enable overlay\n");
2066 return r;
2067 }
2068 }
2069 }
2071 DBG("create_framebuffers done\n");
2073 return 0;
2074 }
2076 static int omapfb_mode_to_timings(const char *mode_str,
2077 struct omap_dss_device *display,
2078 struct omap_video_timings *timings, u8 *bpp)
2079 {
2080 struct fb_info *fbi;
2081 struct fb_var_screeninfo *var;
2082 struct fb_ops *fbops;
2083 int r;
2085 #ifdef CONFIG_OMAP2_DSS_VENC
2086 if (strcmp(mode_str, "pal") == 0) {
2087 *timings = omap_dss_pal_timings;
2088 *bpp = 24;
2089 return 0;
2090 } else if (strcmp(mode_str, "ntsc") == 0) {
2091 *timings = omap_dss_ntsc_timings;
2092 *bpp = 24;
2093 return 0;
2094 }
2095 #endif
2097 /* this is quite a hack, but I wanted to use the modedb and for
2098 * that we need fb_info and var, so we create dummy ones */
2100 *bpp = 0;
2101 fbi = NULL;
2102 var = NULL;
2103 fbops = NULL;
2105 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2106 if (fbi == NULL) {
2107 r = -ENOMEM;
2108 goto err;
2109 }
2111 var = kzalloc(sizeof(*var), GFP_KERNEL);
2112 if (var == NULL) {
2113 r = -ENOMEM;
2114 goto err;
2115 }
2117 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2118 if (fbops == NULL) {
2119 r = -ENOMEM;
2120 goto err;
2121 }
2123 fbi->fbops = fbops;
2125 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2126 if (r == 0) {
2127 r = -EINVAL;
2128 goto err;
2129 }
2131 if (display->driver->get_timings) {
2132 display->driver->get_timings(display, timings);
2133 } else {
2134 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2135 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2136 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2137 }
2139 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2140 timings->hbp = var->left_margin;
2141 timings->hfp = var->right_margin;
2142 timings->vbp = var->upper_margin;
2143 timings->vfp = var->lower_margin;
2144 timings->hsw = var->hsync_len;
2145 timings->vsw = var->vsync_len;
2146 timings->x_res = var->xres;
2147 timings->y_res = var->yres;
2148 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2149 OMAPDSS_SIG_ACTIVE_HIGH :
2150 OMAPDSS_SIG_ACTIVE_LOW;
2151 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2152 OMAPDSS_SIG_ACTIVE_HIGH :
2153 OMAPDSS_SIG_ACTIVE_LOW;
2154 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2156 switch (var->bits_per_pixel) {
2157 case 16:
2158 *bpp = 16;
2159 break;
2160 case 24:
2161 case 32:
2162 default:
2163 *bpp = 24;
2164 break;
2165 }
2167 r = 0;
2169 err:
2170 kfree(fbi);
2171 kfree(var);
2172 kfree(fbops);
2174 return r;
2175 }
2177 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2178 struct omap_dss_device *display, char *mode_str)
2179 {
2180 int r;
2181 u8 bpp;
2182 struct omap_video_timings timings, temp_timings;
2183 struct omapfb_display_data *d;
2185 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2186 if (r)
2187 return r;
2189 d = get_display_data(fbdev, display);
2190 d->bpp_override = bpp;
2192 if (display->driver->check_timings) {
2193 r = display->driver->check_timings(display, &timings);
2194 if (r)
2195 return r;
2196 } else {
2197 /* If check_timings is not present compare xres and yres */
2198 if (display->driver->get_timings) {
2199 display->driver->get_timings(display, &temp_timings);
2201 if (temp_timings.x_res != timings.x_res ||
2202 temp_timings.y_res != timings.y_res)
2203 return -EINVAL;
2204 }
2205 }
2207 if (display->driver->set_timings)
2208 display->driver->set_timings(display, &timings);
2210 return 0;
2211 }
2213 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2214 struct omap_dss_device *dssdev)
2215 {
2216 struct omapfb_display_data *d;
2218 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2220 d = get_display_data(fbdev, dssdev);
2222 if (d->bpp_override != 0)
2223 return d->bpp_override;
2225 return dssdev->driver->get_recommended_bpp(dssdev);
2226 }
2228 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2229 {
2230 char *str, *options, *this_opt;
2231 int r = 0;
2233 str = kstrdup(def_mode, GFP_KERNEL);
2234 if (!str)
2235 return -ENOMEM;
2236 options = str;
2238 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2239 char *p, *display_str, *mode_str;
2240 struct omap_dss_device *display;
2241 int i;
2243 p = strchr(this_opt, ':');
2244 if (!p) {
2245 r = -EINVAL;
2246 break;
2247 }
2249 *p = 0;
2250 display_str = this_opt;
2251 mode_str = p + 1;
2253 display = NULL;
2254 for (i = 0; i < fbdev->num_displays; ++i) {
2255 if (strcmp(fbdev->displays[i].dssdev->name,
2256 display_str) == 0) {
2257 display = fbdev->displays[i].dssdev;
2258 break;
2259 }
2260 }
2262 if (!display) {
2263 r = -EINVAL;
2264 break;
2265 }
2267 r = omapfb_set_def_mode(fbdev, display, mode_str);
2268 if (r)
2269 break;
2270 }
2272 kfree(str);
2274 return r;
2275 }
2277 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2278 struct omap_dss_device *display,
2279 struct omap_video_timings *t)
2280 {
2281 if (display->driver->get_timings) {
2282 display->driver->get_timings(display, t);
2283 } else {
2284 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2285 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2286 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2287 }
2289 t->x_res = m->xres;
2290 t->y_res = m->yres;
2291 t->pixel_clock = PICOS2KHZ(m->pixclock);
2292 t->hsw = m->hsync_len;
2293 t->hfp = m->right_margin;
2294 t->hbp = m->left_margin;
2295 t->vsw = m->vsync_len;
2296 t->vfp = m->lower_margin;
2297 t->vbp = m->upper_margin;
2298 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2299 OMAPDSS_SIG_ACTIVE_HIGH :
2300 OMAPDSS_SIG_ACTIVE_LOW;
2301 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2302 OMAPDSS_SIG_ACTIVE_HIGH :
2303 OMAPDSS_SIG_ACTIVE_LOW;
2304 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2305 }
2307 static int omapfb_find_best_mode(struct omap_dss_device *display,
2308 struct omap_video_timings *timings)
2309 {
2310 struct fb_monspecs *specs;
2311 u8 *edid;
2312 int r, i, best_idx, len;
2314 if (!display->driver->read_edid)
2315 return -ENODEV;
2317 len = 0x80 * 2;
2318 edid = kmalloc(len, GFP_KERNEL);
2319 if (edid == NULL)
2320 return -ENOMEM;
2322 r = display->driver->read_edid(display, edid, len);
2323 if (r < 0)
2324 goto err1;
2326 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2327 if (specs == NULL) {
2328 r = -ENOMEM;
2329 goto err1;
2330 }
2332 fb_edid_to_monspecs(edid, specs);
2334 best_idx = -1;
2336 for (i = 0; i < specs->modedb_len; ++i) {
2337 struct fb_videomode *m;
2338 struct omap_video_timings t;
2340 m = &specs->modedb[i];
2342 if (m->pixclock == 0)
2343 continue;
2345 /* skip repeated pixel modes */
2346 if (m->xres == 2880 || m->xres == 1440)
2347 continue;
2349 if (m->vmode & FB_VMODE_INTERLACED ||
2350 m->vmode & FB_VMODE_DOUBLE)
2351 continue;
2353 fb_videomode_to_omap_timings(m, display, &t);
2355 r = display->driver->check_timings(display, &t);
2356 if (r == 0) {
2357 best_idx = i;
2358 break;
2359 }
2360 }
2362 if (best_idx == -1) {
2363 r = -ENOENT;
2364 goto err2;
2365 }
2367 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2368 timings);
2370 r = 0;
2372 err2:
2373 fb_destroy_modedb(specs->modedb);
2374 kfree(specs);
2375 err1:
2376 kfree(edid);
2378 return r;
2379 }
2381 static int omapfb_init_display(struct omapfb2_device *fbdev,
2382 struct omap_dss_device *dssdev)
2383 {
2384 struct omap_dss_driver *dssdrv = dssdev->driver;
2385 struct omapfb_display_data *d;
2386 int r;
2388 r = dssdrv->enable(dssdev);
2389 if (r) {
2390 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2391 dssdev->name);
2392 return r;
2393 }
2395 d = get_display_data(fbdev, dssdev);
2397 d->fbdev = fbdev;
2399 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2400 u16 w, h;
2402 if (auto_update) {
2403 omapfb_start_auto_update(fbdev, dssdev);
2404 d->update_mode = OMAPFB_AUTO_UPDATE;
2405 } else {
2406 d->update_mode = OMAPFB_MANUAL_UPDATE;
2407 }
2409 if (dssdrv->enable_te) {
2410 r = dssdrv->enable_te(dssdev, 1);
2411 if (r) {
2412 dev_err(fbdev->dev, "Failed to set TE\n");
2413 return r;
2414 }
2415 }
2417 dssdrv->get_resolution(dssdev, &w, &h);
2418 r = dssdrv->update(dssdev, 0, 0, w, h);
2419 if (r) {
2420 dev_err(fbdev->dev,
2421 "Failed to update display\n");
2422 return r;
2423 }
2424 } else {
2425 d->update_mode = OMAPFB_AUTO_UPDATE;
2426 }
2428 return 0;
2429 }
2431 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2432 struct omap_dss_device *def_dssdev)
2433 {
2434 int i, r;
2435 struct omap_overlay_manager *mgr;
2437 if (!def_dssdev->output) {
2438 dev_err(fbdev->dev, "no output for the default display\n");
2439 return -EINVAL;
2440 }
2442 for (i = 0; i < fbdev->num_displays; ++i) {
2443 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2444 struct omap_dss_output *out = dssdev->output;
2446 mgr = omap_dss_get_overlay_manager(dssdev->channel);
2448 if (!mgr || !out)
2449 continue;
2451 if (mgr->output)
2452 mgr->unset_output(mgr);
2454 mgr->set_output(mgr, out);
2455 }
2457 mgr = def_dssdev->output->manager;
2459 if (!mgr) {
2460 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2461 return -EINVAL;
2462 }
2464 for (i = 0; i < fbdev->num_overlays; i++) {
2465 struct omap_overlay *ovl = fbdev->overlays[i];
2467 if (ovl->manager)
2468 ovl->unset_manager(ovl);
2470 r = ovl->set_manager(ovl, mgr);
2471 if (r)
2472 dev_warn(fbdev->dev,
2473 "failed to connect overlay %s to manager %s\n",
2474 ovl->name, mgr->name);
2475 }
2477 return 0;
2478 }
2480 static int __init omapfb_probe(struct platform_device *pdev)
2481 {
2482 struct omapfb2_device *fbdev = NULL;
2483 int r = 0;
2484 int i;
2485 struct omap_dss_device *def_display;
2486 struct omap_dss_device *dssdev;
2488 DBG("omapfb_probe\n");
2490 if (pdev->num_resources != 0) {
2491 dev_err(&pdev->dev, "probed for an unknown device\n");
2492 r = -ENODEV;
2493 goto err0;
2494 }
2496 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2497 GFP_KERNEL);
2498 if (fbdev == NULL) {
2499 r = -ENOMEM;
2500 goto err0;
2501 }
2503 if (def_vrfb && !omap_vrfb_supported()) {
2504 def_vrfb = 0;
2505 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2506 "ignoring the module parameter vrfb=y\n");
2507 }
2509 r = omapdss_compat_init();
2510 if (r)
2511 goto err0;
2513 mutex_init(&fbdev->mtx);
2515 fbdev->dev = &pdev->dev;
2516 platform_set_drvdata(pdev, fbdev);
2518 fbdev->num_displays = 0;
2519 dssdev = NULL;
2520 for_each_dss_dev(dssdev) {
2521 struct omapfb_display_data *d;
2523 omap_dss_get_device(dssdev);
2525 if (!dssdev->driver) {
2526 dev_warn(&pdev->dev, "no driver for display: %s\n",
2527 dssdev->name);
2528 omap_dss_put_device(dssdev);
2529 continue;
2530 }
2532 d = &fbdev->displays[fbdev->num_displays++];
2533 d->dssdev = dssdev;
2534 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2535 d->update_mode = OMAPFB_MANUAL_UPDATE;
2536 else
2537 d->update_mode = OMAPFB_AUTO_UPDATE;
2538 }
2540 if (fbdev->num_displays == 0) {
2541 dev_err(&pdev->dev, "no displays\n");
2542 r = -EINVAL;
2543 goto cleanup;
2544 }
2546 fbdev->num_overlays = omap_dss_get_num_overlays();
2547 for (i = 0; i < fbdev->num_overlays; i++)
2548 fbdev->overlays[i] = omap_dss_get_overlay(i);
2550 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2551 for (i = 0; i < fbdev->num_managers; i++)
2552 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2554 def_display = NULL;
2556 for (i = 0; i < fbdev->num_displays; ++i) {
2557 struct omap_dss_device *dssdev;
2558 const char *def_name;
2560 def_name = omapdss_get_default_display_name();
2562 dssdev = fbdev->displays[i].dssdev;
2564 if (def_name == NULL ||
2565 (dssdev->name && strcmp(def_name, dssdev->name) == 0)) {
2566 def_display = dssdev;
2567 break;
2568 }
2569 }
2571 if (def_display == NULL) {
2572 dev_err(fbdev->dev, "failed to find default display\n");
2573 r = -EINVAL;
2574 goto cleanup;
2575 }
2577 r = omapfb_init_connections(fbdev, def_display);
2578 if (r) {
2579 dev_err(fbdev->dev, "failed to init overlay connections\n");
2580 goto cleanup;
2581 }
2583 if (def_mode && strlen(def_mode) > 0) {
2584 if (omapfb_parse_def_modes(fbdev))
2585 dev_warn(&pdev->dev, "cannot parse default modes\n");
2586 } else if (def_display && def_display->driver->set_timings &&
2587 def_display->driver->check_timings) {
2588 struct omap_video_timings t;
2590 r = omapfb_find_best_mode(def_display, &t);
2592 if (r == 0)
2593 def_display->driver->set_timings(def_display, &t);
2594 }
2596 r = omapfb_create_framebuffers(fbdev);
2597 if (r)
2598 goto cleanup;
2600 for (i = 0; i < fbdev->num_managers; i++) {
2601 struct omap_overlay_manager *mgr;
2602 mgr = fbdev->managers[i];
2603 r = mgr->apply(mgr);
2604 if (r)
2605 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2606 }
2608 DBG("mgr->apply'ed\n");
2610 if (def_display) {
2611 r = omapfb_init_display(fbdev, def_display);
2612 if (r) {
2613 dev_err(fbdev->dev,
2614 "failed to initialize default "
2615 "display\n");
2616 goto cleanup;
2617 }
2618 }
2620 DBG("create sysfs for fbs\n");
2621 r = omapfb_create_sysfs(fbdev);
2622 if (r) {
2623 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2624 goto cleanup;
2625 }
2627 return 0;
2629 cleanup:
2630 omapfb_free_resources(fbdev);
2631 omapdss_compat_uninit();
2632 err0:
2633 dev_err(&pdev->dev, "failed to setup omapfb\n");
2634 return r;
2635 }
2637 static int __exit omapfb_remove(struct platform_device *pdev)
2638 {
2639 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2641 /* FIXME: wait till completion of pending events */
2643 omapfb_remove_sysfs(fbdev);
2645 omapfb_free_resources(fbdev);
2647 omapdss_compat_uninit();
2649 return 0;
2650 }
2652 static struct platform_driver omapfb_driver = {
2653 .remove = __exit_p(omapfb_remove),
2654 .driver = {
2655 .name = "omapfb",
2656 .owner = THIS_MODULE,
2657 },
2658 };
2660 static int __init omapfb_init(void)
2661 {
2662 DBG("omapfb_init\n");
2664 if (platform_driver_probe(&omapfb_driver, omapfb_probe)) {
2665 printk(KERN_ERR "failed to register omapfb driver\n");
2666 return -ENODEV;
2667 }
2669 return 0;
2670 }
2672 static void __exit omapfb_exit(void)
2673 {
2674 DBG("omapfb_exit\n");
2675 platform_driver_unregister(&omapfb_driver);
2676 }
2678 module_param_named(mode, def_mode, charp, 0);
2679 module_param_named(vram, def_vram, charp, 0);
2680 module_param_named(rotate, def_rotate, int, 0);
2681 module_param_named(vrfb, def_vrfb, bool, 0);
2682 module_param_named(mirror, def_mirror, bool, 0);
2684 /* late_initcall to let panel/ctrl drivers loaded first.
2685 * I guess better option would be a more dynamic approach,
2686 * so that omapfb reacts to new panels when they are loaded */
2687 late_initcall(omapfb_init);
2688 /*module_init(omapfb_init);*/
2689 module_exit(omapfb_exit);
2691 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2692 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2693 MODULE_LICENSE("GPL v2");