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mm: kill vma flag VM_RESERVED and mm->reserved_vm counter
[deliverable/linux.git] / drivers / video / omap2 / omapfb / omapfb-main.c
CommitLineData
b39a982d
TV		 1/*
2 * linux/drivers/video/omap2/omapfb-main.c
3 *
4 * Copyright (C) 2008 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23#include <linux/module.h>
24#include <linux/delay.h>
5a0e3ad6 25#include <linux/slab.h>
b39a982d
TV		 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
a0b38cc4 33#include <video/omapdss.h>
7d7e1eba 34#include <plat/cpu.h>
b39a982d
TV		 35#include <plat/vram.h>
36#include <plat/vrfb.h>
37
38#include "omapfb.h"
39
40#define MODULE_NAME "omapfb"
41
42#define OMAPFB_PLANE_XRES_MIN 8
43#define OMAPFB_PLANE_YRES_MIN 8
44
45static char *def_mode;
46static char *def_vram;
90ab5ee9 47static bool def_vrfb;
b39a982d 48static int def_rotate;
90ab5ee9 49static bool def_mirror;
27cc213e
TV		 50static bool auto_update;
51static unsigned int auto_update_freq;
52module_param(auto_update, bool, 0);
53module_param(auto_update_freq, uint, 0644);
b39a982d
TV		 54
55#ifdef DEBUG
90ab5ee9 56bool omapfb_debug;
b39a982d 57module_param_named(debug, omapfb_debug, bool, 0644);
90ab5ee9 58static bool omapfb_test_pattern;
b39a982d
TV		 59module_param_named(test, omapfb_test_pattern, bool, 0644);
60#endif
61
62static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
a2699504
TV		 63static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
64 struct omap_dss_device *dssdev);
b39a982d
TV		 65
66#ifdef DEBUG
67static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
68{
69 struct fb_var_screeninfo *var = &fbi->var;
70 struct fb_fix_screeninfo *fix = &fbi->fix;
71 void __iomem *addr = fbi->screen_base;
72 const unsigned bytespp = var->bits_per_pixel >> 3;
73 const unsigned line_len = fix->line_length / bytespp;
74
75 int r = (color >> 16) & 0xff;
76 int g = (color >> 8) & 0xff;
77 int b = (color >> 0) & 0xff;
78
79 if (var->bits_per_pixel == 16) {
80 u16 __iomem *p = (u16 __iomem *)addr;
81 p += y * line_len + x;
82
83 r = r * 32 / 256;
84 g = g * 64 / 256;
85 b = b * 32 / 256;
86
87 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
88 } else if (var->bits_per_pixel == 24) {
89 u8 __iomem *p = (u8 __iomem *)addr;
90 p += (y * line_len + x) * 3;
91
92 __raw_writeb(b, p + 0);
93 __raw_writeb(g, p + 1);
94 __raw_writeb(r, p + 2);
95 } else if (var->bits_per_pixel == 32) {
96 u32 __iomem *p = (u32 __iomem *)addr;
97 p += y * line_len + x;
98 __raw_writel(color, p);
99 }
100}
101
102static void fill_fb(struct fb_info *fbi)
103{
104 struct fb_var_screeninfo *var = &fbi->var;
105 const short w = var->xres_virtual;
106 const short h = var->yres_virtual;
107 void __iomem *addr = fbi->screen_base;
108 int y, x;
109
110 if (!addr)
111 return;
112
113 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
114
115 for (y = 0; y < h; y++) {
116 for (x = 0; x < w; x++) {
117 if (x < 20 && y < 20)
118 draw_pixel(fbi, x, y, 0xffffff);
119 else if (x < 20 && (y > 20 && y < h - 20))
120 draw_pixel(fbi, x, y, 0xff);
121 else if (y < 20 && (x > 20 && x < w - 20))
122 draw_pixel(fbi, x, y, 0xff00);
123 else if (x > w - 20 && (y > 20 && y < h - 20))
124 draw_pixel(fbi, x, y, 0xff0000);
125 else if (y > h - 20 && (x > 20 && x < w - 20))
126 draw_pixel(fbi, x, y, 0xffff00);
127 else if (x == 20 || x == w - 20 ||
128 y == 20 || y == h - 20)
129 draw_pixel(fbi, x, y, 0xffffff);
130 else if (x == y || w - x == h - y)
131 draw_pixel(fbi, x, y, 0xff00ff);
132 else if (w - x == y || x == h - y)
133 draw_pixel(fbi, x, y, 0x00ffff);
134 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
135 int t = x * 3 / w;
136 unsigned r = 0, g = 0, b = 0;
137 unsigned c;
138 if (var->bits_per_pixel == 16) {
139 if (t == 0)
140 b = (y % 32) * 256 / 32;
141 else if (t == 1)
142 g = (y % 64) * 256 / 64;
143 else if (t == 2)
144 r = (y % 32) * 256 / 32;
145 } else {
146 if (t == 0)
147 b = (y % 256);
148 else if (t == 1)
149 g = (y % 256);
150 else if (t == 2)
151 r = (y % 256);
152 }
153 c = (r << 16) | (g << 8) | (b << 0);
154 draw_pixel(fbi, x, y, c);
155 } else {
156 draw_pixel(fbi, x, y, 0);
157 }
158 }
159 }
160}
161#endif
162
a4c1a148 163static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
b39a982d 164{
078ff546 165 const struct vrfb *vrfb = &ofbi->region->vrfb;
b39a982d
TV		 166 unsigned offset;
167
168 switch (rot) {
169 case FB_ROTATE_UR:
170 offset = 0;
171 break;
172 case FB_ROTATE_CW:
173 offset = vrfb->yoffset;
174 break;
175 case FB_ROTATE_UD:
176 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
177 break;
178 case FB_ROTATE_CCW:
179 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
180 break;
181 default:
182 BUG();
4a75cb85 183 return 0;
b39a982d
TV		 184 }
185
186 offset *= vrfb->bytespp;
187
188 return offset;
189}
190
a4c1a148 191static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
b39a982d
TV		 192{
193 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
078ff546 194 return ofbi->region->vrfb.paddr[rot]
b39a982d
TV		 195 + omapfb_get_vrfb_offset(ofbi, rot);
196 } else {
078ff546 197 return ofbi->region->paddr;
b39a982d
TV		 198 }
199}
200
a4c1a148 201static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
b39a982d
TV		 202{
203 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
078ff546 204 return ofbi->region->vrfb.paddr[0];
b39a982d 205 else
078ff546 206 return ofbi->region->paddr;
b39a982d
TV		 207}
208
a4c1a148 209static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
b39a982d
TV		 210{
211 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
078ff546 212 return ofbi->region->vrfb.vaddr[0];
b39a982d 213 else
078ff546 214 return ofbi->region->vaddr;
b39a982d
TV		 215}
216
217static struct omapfb_colormode omapfb_colormodes[] = {
218 {
219 .dssmode = OMAP_DSS_COLOR_UYVY,
220 .bits_per_pixel = 16,
221 .nonstd = OMAPFB_COLOR_YUV422,
222 }, {
223 .dssmode = OMAP_DSS_COLOR_YUV2,
224 .bits_per_pixel = 16,
225 .nonstd = OMAPFB_COLOR_YUY422,
226 }, {
227 .dssmode = OMAP_DSS_COLOR_ARGB16,
228 .bits_per_pixel = 16,
229 .red = { .length = 4, .offset = 8, .msb_right = 0 },
230 .green = { .length = 4, .offset = 4, .msb_right = 0 },
231 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
232 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
233 }, {
234 .dssmode = OMAP_DSS_COLOR_RGB16,
235 .bits_per_pixel = 16,
236 .red = { .length = 5, .offset = 11, .msb_right = 0 },
237 .green = { .length = 6, .offset = 5, .msb_right = 0 },
238 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
239 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
240 }, {
241 .dssmode = OMAP_DSS_COLOR_RGB24P,
242 .bits_per_pixel = 24,
243 .red = { .length = 8, .offset = 16, .msb_right = 0 },
244 .green = { .length = 8, .offset = 8, .msb_right = 0 },
245 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
246 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
247 }, {
248 .dssmode = OMAP_DSS_COLOR_RGB24U,
249 .bits_per_pixel = 32,
250 .red = { .length = 8, .offset = 16, .msb_right = 0 },
251 .green = { .length = 8, .offset = 8, .msb_right = 0 },
252 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
253 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
254 }, {
255 .dssmode = OMAP_DSS_COLOR_ARGB32,
256 .bits_per_pixel = 32,
257 .red = { .length = 8, .offset = 16, .msb_right = 0 },
258 .green = { .length = 8, .offset = 8, .msb_right = 0 },
259 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
260 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
261 }, {
262 .dssmode = OMAP_DSS_COLOR_RGBA32,
263 .bits_per_pixel = 32,
264 .red = { .length = 8, .offset = 24, .msb_right = 0 },
265 .green = { .length = 8, .offset = 16, .msb_right = 0 },
266 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
267 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
268 }, {
269 .dssmode = OMAP_DSS_COLOR_RGBX32,
270 .bits_per_pixel = 32,
271 .red = { .length = 8, .offset = 24, .msb_right = 0 },
272 .green = { .length = 8, .offset = 16, .msb_right = 0 },
273 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
274 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
275 },
276};
277
278static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
279 struct omapfb_colormode *color)
280{
281 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
282 {
283 return f1->length == f2->length &&
284 f1->offset == f2->offset &&
285 f1->msb_right == f2->msb_right;
286 }
287
288 if (var->bits_per_pixel == 0 ||
289 var->red.length == 0 ||
290 var->blue.length == 0 ||
291 var->green.length == 0)
292 return 0;
293
294 return var->bits_per_pixel == color->bits_per_pixel &&
295 cmp_component(&var->red, &color->red) &&
296 cmp_component(&var->green, &color->green) &&
297 cmp_component(&var->blue, &color->blue) &&
298 cmp_component(&var->transp, &color->transp);
299}
300
301static void assign_colormode_to_var(struct fb_var_screeninfo *var,
302 struct omapfb_colormode *color)
303{
304 var->bits_per_pixel = color->bits_per_pixel;
305 var->nonstd = color->nonstd;
306 var->red = color->red;
307 var->green = color->green;
308 var->blue = color->blue;
309 var->transp = color->transp;
310}
311
312static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
313 enum omap_color_mode *mode)
314{
315 enum omap_color_mode dssmode;
316 int i;
317
318 /* first match with nonstd field */
319 if (var->nonstd) {
320 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
321 struct omapfb_colormode *m = &omapfb_colormodes[i];
322 if (var->nonstd == m->nonstd) {
323 assign_colormode_to_var(var, m);
324 *mode = m->dssmode;
325 return 0;
326 }
327 }
328
329 return -EINVAL;
330 }
331
332 /* then try exact match of bpp and colors */
333 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
334 struct omapfb_colormode *m = &omapfb_colormodes[i];
335 if (cmp_var_to_colormode(var, m)) {
336 assign_colormode_to_var(var, m);
337 *mode = m->dssmode;
338 return 0;
339 }
340 }
341
342 /* match with bpp if user has not filled color fields
343 * properly */
344 switch (var->bits_per_pixel) {
345 case 1:
346 dssmode = OMAP_DSS_COLOR_CLUT1;
347 break;
348 case 2:
349 dssmode = OMAP_DSS_COLOR_CLUT2;
350 break;
351 case 4:
352 dssmode = OMAP_DSS_COLOR_CLUT4;
353 break;
354 case 8:
355 dssmode = OMAP_DSS_COLOR_CLUT8;
356 break;
357 case 12:
358 dssmode = OMAP_DSS_COLOR_RGB12U;
359 break;
360 case 16:
361 dssmode = OMAP_DSS_COLOR_RGB16;
362 break;
363 case 24:
364 dssmode = OMAP_DSS_COLOR_RGB24P;
365 break;
366 case 32:
367 dssmode = OMAP_DSS_COLOR_RGB24U;
368 break;
369 default:
370 return -EINVAL;
371 }
372
373 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
374 struct omapfb_colormode *m = &omapfb_colormodes[i];
375 if (dssmode == m->dssmode) {
376 assign_colormode_to_var(var, m);
377 *mode = m->dssmode;
378 return 0;
379 }
380 }
381
382 return -EINVAL;
383}
384
385static int check_fb_res_bounds(struct fb_var_screeninfo *var)
386{
387 int xres_min = OMAPFB_PLANE_XRES_MIN;
388 int xres_max = 2048;
389 int yres_min = OMAPFB_PLANE_YRES_MIN;
390 int yres_max = 2048;
391
392 /* XXX: some applications seem to set virtual res to 0. */
393 if (var->xres_virtual == 0)
394 var->xres_virtual = var->xres;
395
396 if (var->yres_virtual == 0)
397 var->yres_virtual = var->yres;
398
399 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
400 return -EINVAL;
401
402 if (var->xres < xres_min)
403 var->xres = xres_min;
404 if (var->yres < yres_min)
405 var->yres = yres_min;
406 if (var->xres > xres_max)
407 var->xres = xres_max;
408 if (var->yres > yres_max)
409 var->yres = yres_max;
410
411 if (var->xres > var->xres_virtual)
412 var->xres = var->xres_virtual;
413 if (var->yres > var->yres_virtual)
414 var->yres = var->yres_virtual;
415
416 return 0;
417}
418
419static void shrink_height(unsigned long max_frame_size,
420 struct fb_var_screeninfo *var)
421{
422 DBG("can't fit FB into memory, reducing y\n");
423 var->yres_virtual = max_frame_size /
424 (var->xres_virtual * var->bits_per_pixel >> 3);
425
426 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
427 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
428
429 if (var->yres > var->yres_virtual)
430 var->yres = var->yres_virtual;
431}
432
433static void shrink_width(unsigned long max_frame_size,
434 struct fb_var_screeninfo *var)
435{
436 DBG("can't fit FB into memory, reducing x\n");
437 var->xres_virtual = max_frame_size / var->yres_virtual /
438 (var->bits_per_pixel >> 3);
439
440 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
441 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
442
443 if (var->xres > var->xres_virtual)
444 var->xres = var->xres_virtual;
445}
446
447static int check_vrfb_fb_size(unsigned long region_size,
448 const struct fb_var_screeninfo *var)
449{
450 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
451 var->yres_virtual, var->bits_per_pixel >> 3);
452
453 return min_phys_size > region_size ? -EINVAL : 0;
454}
455
456static int check_fb_size(const struct omapfb_info *ofbi,
457 struct fb_var_screeninfo *var)
458{
078ff546 459 unsigned long max_frame_size = ofbi->region->size;
b39a982d
TV		 460 int bytespp = var->bits_per_pixel >> 3;
461 unsigned long line_size = var->xres_virtual * bytespp;
462
463 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
464 /* One needs to check for both VRFB and OMAPFB limitations. */
465 if (check_vrfb_fb_size(max_frame_size, var))
466 shrink_height(omap_vrfb_max_height(
467 max_frame_size, var->xres_virtual, bytespp) *
468 line_size, var);
469
470 if (check_vrfb_fb_size(max_frame_size, var)) {
471 DBG("cannot fit FB to memory\n");
472 return -EINVAL;
473 }
474
475 return 0;
476 }
477
478 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
479
480 if (line_size * var->yres_virtual > max_frame_size)
481 shrink_height(max_frame_size, var);
482
483 if (line_size * var->yres_virtual > max_frame_size) {
484 shrink_width(max_frame_size, var);
485 line_size = var->xres_virtual * bytespp;
486 }
487
488 if (line_size * var->yres_virtual > max_frame_size) {
489 DBG("cannot fit FB to memory\n");
490 return -EINVAL;
491 }
492
493 return 0;
494}
495
496/*
497 * Consider if VRFB assisted rotation is in use and if the virtual space for
498 * the zero degree view needs to be mapped. The need for mapping also acts as
499 * the trigger for setting up the hardware on the context in question. This
500 * ensures that one does not attempt to access the virtual view before the
501 * hardware is serving the address translations.
502 */
503static int setup_vrfb_rotation(struct fb_info *fbi)
504{
505 struct omapfb_info *ofbi = FB2OFB(fbi);
078ff546 506 struct omapfb2_mem_region *rg = ofbi->region;
b39a982d
TV		 507 struct vrfb *vrfb = &rg->vrfb;
508 struct fb_var_screeninfo *var = &fbi->var;
509 struct fb_fix_screeninfo *fix = &fbi->fix;
510 unsigned bytespp;
511 bool yuv_mode;
512 enum omap_color_mode mode;
513 int r;
514 bool reconf;
515
516 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
517 return 0;
518
519 DBG("setup_vrfb_rotation\n");
520
521 r = fb_mode_to_dss_mode(var, &mode);
522 if (r)
523 return r;
524
525 bytespp = var->bits_per_pixel >> 3;
526
527 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
528
529 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
530 * is enabled/disabled, or if bytes per pixel changes */
531
532 /* XXX we shouldn't allow this when framebuffer is mmapped */
533
534 reconf = false;
535
536 if (yuv_mode != vrfb->yuv_mode)
537 reconf = true;
538 else if (bytespp != vrfb->bytespp)
539 reconf = true;
540 else if (vrfb->xres != var->xres_virtual ||
541 vrfb->yres != var->yres_virtual)
542 reconf = true;
543
544 if (vrfb->vaddr[0] && reconf) {
545 fbi->screen_base = NULL;
546 fix->smem_start = 0;
547 fix->smem_len = 0;
548 iounmap(vrfb->vaddr[0]);
549 vrfb->vaddr[0] = NULL;
550 DBG("setup_vrfb_rotation: reset fb\n");
551 }
552
553 if (vrfb->vaddr[0])
554 return 0;
555
556 omap_vrfb_setup(&rg->vrfb, rg->paddr,
557 var->xres_virtual,
558 var->yres_virtual,
559 bytespp, yuv_mode);
560
561 /* Now one can ioremap the 0 angle view */
562 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
563 if (r)
564 return r;
565
566 /* used by open/write in fbmem.c */
078ff546 567 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
b39a982d 568
078ff546 569 fix->smem_start = ofbi->region->vrfb.paddr[0];
b39a982d
TV		 570
571 switch (var->nonstd) {
572 case OMAPFB_COLOR_YUV422:
573 case OMAPFB_COLOR_YUY422:
574 fix->line_length =
575 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
576 break;
577 default:
578 fix->line_length =
579 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
580 break;
581 }
582
583 fix->smem_len = var->yres_virtual * fix->line_length;
584
585 return 0;
586}
587
588int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
589 struct fb_var_screeninfo *var)
590{
591 int i;
592
593 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
594 struct omapfb_colormode *mode = &omapfb_colormodes[i];
595 if (dssmode == mode->dssmode) {
596 assign_colormode_to_var(var, mode);
597 return 0;
598 }
599 }
600 return -ENOENT;
601}
602
603void set_fb_fix(struct fb_info *fbi)
604{
605 struct fb_fix_screeninfo *fix = &fbi->fix;
606 struct fb_var_screeninfo *var = &fbi->var;
607 struct omapfb_info *ofbi = FB2OFB(fbi);
078ff546 608 struct omapfb2_mem_region *rg = ofbi->region;
b39a982d
TV		 609
610 DBG("set_fb_fix\n");
611
612 /* used by open/write in fbmem.c */
613 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
614
615 /* used by mmap in fbmem.c */
616 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
617 switch (var->nonstd) {
618 case OMAPFB_COLOR_YUV422:
619 case OMAPFB_COLOR_YUY422:
620 fix->line_length =
621 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
622 break;
623 default:
624 fix->line_length =
625 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
626 break;
627 }
628
629 fix->smem_len = var->yres_virtual * fix->line_length;
630 } else {
631 fix->line_length =
632 (var->xres_virtual * var->bits_per_pixel) >> 3;
633 fix->smem_len = rg->size;
634 }
635
636 fix->smem_start = omapfb_get_region_paddr(ofbi);
637
638 fix->type = FB_TYPE_PACKED_PIXELS;
639
640 if (var->nonstd)
641 fix->visual = FB_VISUAL_PSEUDOCOLOR;
642 else {
643 switch (var->bits_per_pixel) {
644 case 32:
645 case 24:
646 case 16:
647 case 12:
648 fix->visual = FB_VISUAL_TRUECOLOR;
649 /* 12bpp is stored in 16 bits */
650 break;
651 case 1:
652 case 2:
653 case 4:
654 case 8:
655 fix->visual = FB_VISUAL_PSEUDOCOLOR;
656 break;
657 }
658 }
659
660 fix->accel = FB_ACCEL_NONE;
661
662 fix->xpanstep = 1;
663 fix->ypanstep = 1;
664}
665
666/* check new var and possibly modify it to be ok */
667int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
668{
669 struct omapfb_info *ofbi = FB2OFB(fbi);
670 struct omap_dss_device *display = fb2display(fbi);
671 enum omap_color_mode mode = 0;
672 int i;
673 int r;
674
675 DBG("check_fb_var %d\n", ofbi->id);
676
1ceafc00
VS		 677 WARN_ON(!atomic_read(&ofbi->region->lock_count));
678
b39a982d
TV		 679 r = fb_mode_to_dss_mode(var, &mode);
680 if (r) {
681 DBG("cannot convert var to omap dss mode\n");
682 return r;
683 }
684
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 }
691
86f2d7dd 692 if (var->rotate > 3)
b39a982d
TV		 693 return -EINVAL;
694
695 if (check_fb_res_bounds(var))
696 return -EINVAL;
697
276a1d43 698 /* When no memory is allocated ignore the size check */
078ff546 699 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
b39a982d
TV		 700 return -EINVAL;
701
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;
706
707 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
708 var->xres, var->yres,
709 var->xres_virtual, var->yres_virtual);
710
7a0987bf
JN		 711 if (display && display->driver->get_dimensions) {
712 u32 w, h;
713 display->driver->get_dimensions(display, &w, &h);
714 var->width = DIV_ROUND_CLOSEST(w, 1000);
715 var->height = DIV_ROUND_CLOSEST(h, 1000);
716 } else {
717 var->height = -1;
718 var->width = -1;
719 }
720
b39a982d
TV		 721 var->grayscale = 0;
722
69b2048f 723 if (display && display->driver->get_timings) {
b39a982d 724 struct omap_video_timings timings;
69b2048f 725 display->driver->get_timings(display, &timings);
b39a982d
TV		 726
727 /* pixclock in ps, the rest in pixclock */
728 var->pixclock = timings.pixel_clock != 0 ?
729 KHZ2PICOS(timings.pixel_clock) :
730 0;
87ba8288
TK		 731 var->left_margin = timings.hbp;
732 var->right_margin = timings.hfp;
733 var->upper_margin = timings.vbp;
734 var->lower_margin = timings.vfp;
b39a982d
TV		 735 var->hsync_len = timings.hsw;
736 var->vsync_len = timings.vsw;
783babf3
AT		 737 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
738 FB_SYNC_HOR_HIGH_ACT : 0;
739 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
740 FB_SYNC_VERT_HIGH_ACT : 0;
23bae3ad
AT		 741 var->vmode = timings.interlace ?
742 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
b39a982d
TV		 743 } else {
744 var->pixclock = 0;
745 var->left_margin = 0;
746 var->right_margin = 0;
747 var->upper_margin = 0;
748 var->lower_margin = 0;
749 var->hsync_len = 0;
750 var->vsync_len = 0;
783babf3 751 var->sync = 0;
23bae3ad 752 var->vmode = FB_VMODE_NONINTERLACED;
b39a982d
TV		 753 }
754
b39a982d
TV		 755 return 0;
756}
757
758/*
759 * ---------------------------------------------------------------------------
760 * fbdev framework callbacks
761 * ---------------------------------------------------------------------------
762 */
763static int omapfb_open(struct fb_info *fbi, int user)
764{
765 return 0;
766}
767
768static int omapfb_release(struct fb_info *fbi, int user)
769{
b39a982d
TV		 770 return 0;
771}
772
a4c1a148
VS		 773static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
774 const struct fb_fix_screeninfo *fix, int rotation)
b39a982d
TV		 775{
776 unsigned offset;
777
778 offset = var->yoffset * fix->line_length +
779 var->xoffset * (var->bits_per_pixel >> 3);
780
781 return offset;
782}
783
a4c1a148
VS		 784static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
785 const struct fb_fix_screeninfo *fix, int rotation)
b39a982d
TV		 786{
787 unsigned offset;
788
789 if (rotation == FB_ROTATE_UD)
790 offset = (var->yres_virtual - var->yres) *
791 fix->line_length;
792 else if (rotation == FB_ROTATE_CW)
793 offset = (var->yres_virtual - var->yres) *
794 (var->bits_per_pixel >> 3);
795 else
796 offset = 0;
797
798 if (rotation == FB_ROTATE_UR)
799 offset += var->yoffset * fix->line_length +
800 var->xoffset * (var->bits_per_pixel >> 3);
801 else if (rotation == FB_ROTATE_UD)
802 offset -= var->yoffset * fix->line_length +
803 var->xoffset * (var->bits_per_pixel >> 3);
804 else if (rotation == FB_ROTATE_CW)
805 offset -= var->xoffset * fix->line_length +
806 var->yoffset * (var->bits_per_pixel >> 3);
807 else if (rotation == FB_ROTATE_CCW)
808 offset += var->xoffset * fix->line_length +
809 var->yoffset * (var->bits_per_pixel >> 3);
810
811 return offset;
812}
813
46d3524a
VS		 814static void omapfb_calc_addr(const struct omapfb_info *ofbi,
815 const struct fb_var_screeninfo *var,
816 const struct fb_fix_screeninfo *fix,
212b0d50 817 int rotation, u32 *paddr)
46d3524a
VS		 818{
819 u32 data_start_p;
46d3524a
VS		 820 int offset;
821
212b0d50 822 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
46d3524a 823 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
212b0d50 824 else
46d3524a 825 data_start_p = omapfb_get_region_paddr(ofbi);
46d3524a
VS		 826
827 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
828 offset = calc_rotation_offset_vrfb(var, fix, rotation);
829 else
830 offset = calc_rotation_offset_dma(var, fix, rotation);
831
832 data_start_p += offset;
46d3524a
VS		 833
834 if (offset)
835 DBG("offset %d, %d = %d\n",
836 var->xoffset, var->yoffset, offset);
837
212b0d50 838 DBG("paddr %x\n", data_start_p);
46d3524a
VS		 839
840 *paddr = data_start_p;
46d3524a 841}
b39a982d
TV		 842
843/* setup overlay according to the fb */
078ff546 844int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
b39a982d
TV		 845 u16 posx, u16 posy, u16 outw, u16 outh)
846{
847 int r = 0;
848 struct omapfb_info *ofbi = FB2OFB(fbi);
849 struct fb_var_screeninfo *var = &fbi->var;
850 struct fb_fix_screeninfo *fix = &fbi->fix;
851 enum omap_color_mode mode = 0;
46d3524a 852 u32 data_start_p = 0;
b39a982d
TV		 853 struct omap_overlay_info info;
854 int xres, yres;
855 int screen_width;
856 int mirror;
857 int rotation = var->rotate;
858 int i;
859
1ceafc00
VS		 860 WARN_ON(!atomic_read(&ofbi->region->lock_count));
861
b39a982d
TV		 862 for (i = 0; i < ofbi->num_overlays; i++) {
863 if (ovl != ofbi->overlays[i])
864 continue;
865
866 rotation = (rotation + ofbi->rotation[i]) % 4;
867 break;
868 }
869
870 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
871 posx, posy, outw, outh);
872
873 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
874 xres = var->yres;
875 yres = var->xres;
876 } else {
877 xres = var->xres;
878 yres = var->yres;
879 }
880
078ff546 881 if (ofbi->region->size)
212b0d50 882 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
b39a982d
TV		 883
884 r = fb_mode_to_dss_mode(var, &mode);
885 if (r) {
886 DBG("fb_mode_to_dss_mode failed");
887 goto err;
888 }
889
890 switch (var->nonstd) {
891 case OMAPFB_COLOR_YUV422:
892 case OMAPFB_COLOR_YUY422:
893 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
894 screen_width = fix->line_length
895 / (var->bits_per_pixel >> 2);
896 break;
897 }
898 default:
899 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
900 break;
901 }
902
903 ovl->get_overlay_info(ovl, &info);
904
905 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
906 mirror = 0;
907 else
908 mirror = ofbi->mirror;
909
910 info.paddr = data_start_p;
b39a982d
TV		 911 info.screen_width = screen_width;
912 info.width = xres;
913 info.height = yres;
914 info.color_mode = mode;
915 info.rotation_type = ofbi->rotation_type;
916 info.rotation = rotation;
917 info.mirror = mirror;
918
919 info.pos_x = posx;
920 info.pos_y = posy;
921 info.out_width = outw;
922 info.out_height = outh;
923
924 r = ovl->set_overlay_info(ovl, &info);
925 if (r) {
926 DBG("ovl->setup_overlay_info failed\n");
927 goto err;
928 }
929
930 return 0;
931
932err:
933 DBG("setup_overlay failed\n");
934 return r;
935}
936
937/* apply var to the overlay */
938int omapfb_apply_changes(struct fb_info *fbi, int init)
939{
940 int r = 0;
941 struct omapfb_info *ofbi = FB2OFB(fbi);
942 struct fb_var_screeninfo *var = &fbi->var;
943 struct omap_overlay *ovl;
944 u16 posx, posy;
945 u16 outw, outh;
946 int i;
947
948#ifdef DEBUG
949 if (omapfb_test_pattern)
950 fill_fb(fbi);
951#endif
952
1ceafc00
VS		 953 WARN_ON(!atomic_read(&ofbi->region->lock_count));
954
b39a982d
TV		 955 for (i = 0; i < ofbi->num_overlays; i++) {
956 ovl = ofbi->overlays[i];
957
958 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
959
078ff546 960 if (ofbi->region->size == 0) {
b39a982d
TV		 961 /* the fb is not available. disable the overlay */
962 omapfb_overlay_enable(ovl, 0);
963 if (!init && ovl->manager)
964 ovl->manager->apply(ovl->manager);
965 continue;
966 }
967
968 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
969 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
970 if (rotation == FB_ROTATE_CW ||
971 rotation == FB_ROTATE_CCW) {
972 outw = var->yres;
973 outh = var->xres;
974 } else {
975 outw = var->xres;
976 outh = var->yres;
977 }
978 } else {
c1a9febf
TV		 979 struct omap_overlay_info info;
980 ovl->get_overlay_info(ovl, &info);
981 outw = info.out_width;
982 outh = info.out_height;
b39a982d
TV		 983 }
984
985 if (init) {
986 posx = 0;
987 posy = 0;
988 } else {
c1a9febf
TV		 989 struct omap_overlay_info info;
990 ovl->get_overlay_info(ovl, &info);
991 posx = info.pos_x;
992 posy = info.pos_y;
b39a982d
TV		 993 }
994
995 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
996 if (r)
997 goto err;
998
999 if (!init && ovl->manager)
1000 ovl->manager->apply(ovl->manager);
1001 }
1002 return 0;
1003err:
1004 DBG("apply_changes failed\n");
1005 return r;
1006}
1007
1008/* checks var and eventually tweaks it to something supported,
1009 * DO NOT MODIFY PAR */
1010static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1011{
430571d5 1012 struct omapfb_info *ofbi = FB2OFB(fbi);
b39a982d
TV		 1013 int r;
1014
1015 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1016
430571d5
VS		 1017 omapfb_get_mem_region(ofbi->region);
1018
b39a982d
TV		 1019 r = check_fb_var(fbi, var);
1020
430571d5
VS		 1021 omapfb_put_mem_region(ofbi->region);
1022
b39a982d
TV		 1023 return r;
1024}
1025
1026/* set the video mode according to info->var */
1027static int omapfb_set_par(struct fb_info *fbi)
1028{
430571d5 1029 struct omapfb_info *ofbi = FB2OFB(fbi);
b39a982d
TV		 1030 int r;
1031
1032 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1033
430571d5
VS		 1034 omapfb_get_mem_region(ofbi->region);
1035
b39a982d
TV		 1036 set_fb_fix(fbi);
1037
1038 r = setup_vrfb_rotation(fbi);
1039 if (r)
430571d5 1040 goto out;
b39a982d
TV		 1041
1042 r = omapfb_apply_changes(fbi, 0);
1043
430571d5
VS		 1044 out:
1045 omapfb_put_mem_region(ofbi->region);
1046
b39a982d
TV		 1047 return r;
1048}
1049
1050static int omapfb_pan_display(struct fb_var_screeninfo *var,
1051 struct fb_info *fbi)
1052{
430571d5 1053 struct omapfb_info *ofbi = FB2OFB(fbi);
b39a982d
TV		 1054 struct fb_var_screeninfo new_var;
1055 int r;
1056
1057 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1058
1059 if (var->xoffset == fbi->var.xoffset &&
1060 var->yoffset == fbi->var.yoffset)
1061 return 0;
1062
1063 new_var = fbi->var;
1064 new_var.xoffset = var->xoffset;
1065 new_var.yoffset = var->yoffset;
1066
1067 fbi->var = new_var;
1068
430571d5
VS		 1069 omapfb_get_mem_region(ofbi->region);
1070
b39a982d
TV		 1071 r = omapfb_apply_changes(fbi, 0);
1072
430571d5
VS		 1073 omapfb_put_mem_region(ofbi->region);
1074
b39a982d
TV		 1075 return r;
1076}
1077
1078static void mmap_user_open(struct vm_area_struct *vma)
1079{
078ff546 1080 struct omapfb2_mem_region *rg = vma->vm_private_data;
b39a982d 1081
430571d5 1082 omapfb_get_mem_region(rg);
078ff546 1083 atomic_inc(&rg->map_count);
430571d5 1084 omapfb_put_mem_region(rg);
b39a982d
TV		 1085}
1086
1087static void mmap_user_close(struct vm_area_struct *vma)
1088{
078ff546 1089 struct omapfb2_mem_region *rg = vma->vm_private_data;
b39a982d 1090
430571d5 1091 omapfb_get_mem_region(rg);
078ff546 1092 atomic_dec(&rg->map_count);
430571d5 1093 omapfb_put_mem_region(rg);
b39a982d
TV		 1094}
1095
1096static struct vm_operations_struct mmap_user_ops = {
1097 .open = mmap_user_open,
1098 .close = mmap_user_close,
1099};
1100
1101static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1102{
1103 struct omapfb_info *ofbi = FB2OFB(fbi);
1104 struct fb_fix_screeninfo *fix = &fbi->fix;
078ff546 1105 struct omapfb2_mem_region *rg;
b39a982d
TV		 1106 unsigned long off;
1107 unsigned long start;
1108 u32 len;
430571d5 1109 int r = -EINVAL;
b39a982d
TV		 1110
1111 if (vma->vm_end - vma->vm_start == 0)
1112 return 0;
1113 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1114 return -EINVAL;
1115 off = vma->vm_pgoff << PAGE_SHIFT;
1116
430571d5 1117 rg = omapfb_get_mem_region(ofbi->region);
078ff546 1118
b39a982d
TV		 1119 start = omapfb_get_region_paddr(ofbi);
1120 len = fix->smem_len;
1121 if (off >= len)
430571d5 1122 goto error;
b39a982d 1123 if ((vma->vm_end - vma->vm_start + off) > len)
430571d5 1124 goto error;
b39a982d
TV		 1125
1126 off += start;
1127
1128 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1129
1130 vma->vm_pgoff = off >> PAGE_SHIFT;
314e51b9 1131 /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
b39a982d
TV		 1132 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1133 vma->vm_ops = &mmap_user_ops;
078ff546 1134 vma->vm_private_data = rg;
b39a982d 1135 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
430571d5
VS		 1136 vma->vm_end - vma->vm_start,
1137 vma->vm_page_prot)) {
1138 r = -EAGAIN;
1139 goto error;
1140 }
1141
b39a982d 1142 /* vm_ops.open won't be called for mmap itself. */
078ff546 1143 atomic_inc(&rg->map_count);
430571d5
VS		 1144
1145 omapfb_put_mem_region(rg);
1146
b39a982d 1147 return 0;
430571d5
VS		 1148
1149 error:
1150 omapfb_put_mem_region(ofbi->region);
1151
1152 return r;
b39a982d
TV		 1153}
1154
1155/* Store a single color palette entry into a pseudo palette or the hardware
1156 * palette if one is available. For now we support only 16bpp and thus store
1157 * the entry only to the pseudo palette.
1158 */
1159static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1160 u_int blue, u_int transp, int update_hw_pal)
1161{
1162 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1163 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1164 struct fb_var_screeninfo *var = &fbi->var;
1165 int r = 0;
1166
1167 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1168
1169 /*switch (plane->color_mode) {*/
1170 switch (mode) {
1171 case OMAPFB_COLOR_YUV422:
1172 case OMAPFB_COLOR_YUV420:
1173 case OMAPFB_COLOR_YUY422:
1174 r = -EINVAL;
1175 break;
1176 case OMAPFB_COLOR_CLUT_8BPP:
1177 case OMAPFB_COLOR_CLUT_4BPP:
1178 case OMAPFB_COLOR_CLUT_2BPP:
1179 case OMAPFB_COLOR_CLUT_1BPP:
1180 /*
1181 if (fbdev->ctrl->setcolreg)
1182 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1183 transp, update_hw_pal);
1184 */
1185 /* Fallthrough */
1186 r = -EINVAL;
1187 break;
1188 case OMAPFB_COLOR_RGB565:
1189 case OMAPFB_COLOR_RGB444:
1190 case OMAPFB_COLOR_RGB24P:
1191 case OMAPFB_COLOR_RGB24U:
1192 if (r != 0)
1193 break;
1194
b39a982d 1195 if (regno < 16) {
c1c52848 1196 u32 pal;
b39a982d
TV		 1197 pal = ((red >> (16 - var->red.length)) <<
1198 var->red.offset) |
1199 ((green >> (16 - var->green.length)) <<
1200 var->green.offset) |
1201 (blue >> (16 - var->blue.length));
1202 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1203 }
1204 break;
1205 default:
1206 BUG();
1207 }
1208 return r;
1209}
1210
1211static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1212 u_int transp, struct fb_info *info)
1213{
1214 DBG("setcolreg\n");
1215
1216 return _setcolreg(info, regno, red, green, blue, transp, 1);
1217}
1218
1219static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1220{
1221 int count, index, r;
1222 u16 *red, *green, *blue, *transp;
1223 u16 trans = 0xffff;
1224
1225 DBG("setcmap\n");
1226
1227 red = cmap->red;
1228 green = cmap->green;
1229 blue = cmap->blue;
1230 transp = cmap->transp;
1231 index = cmap->start;
1232
1233 for (count = 0; count < cmap->len; count++) {
1234 if (transp)
1235 trans = *transp++;
1236 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1237 count == cmap->len - 1);
1238 if (r != 0)
1239 return r;
1240 }
1241
1242 return 0;
1243}
1244
1245static int omapfb_blank(int blank, struct fb_info *fbi)
1246{
1247 struct omapfb_info *ofbi = FB2OFB(fbi);
1248 struct omapfb2_device *fbdev = ofbi->fbdev;
1249 struct omap_dss_device *display = fb2display(fbi);
27cc213e 1250 struct omapfb_display_data *d;
b39a982d
TV		 1251 int r = 0;
1252
93255887
JN		 1253 if (!display)
1254 return -EINVAL;
1255
b39a982d
TV		 1256 omapfb_lock(fbdev);
1257
27cc213e
TV		 1258 d = get_display_data(fbdev, display);
1259
b39a982d
TV		 1260 switch (blank) {
1261 case FB_BLANK_UNBLANK:
1262 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1263 goto exit;
1264
37ac60e4
TV		 1265 if (display->driver->resume)
1266 r = display->driver->resume(display);
b39a982d 1267
27cc213e
TV		 1268 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1269 d->update_mode == OMAPFB_AUTO_UPDATE &&
1270 !d->auto_update_work_enabled)
1271 omapfb_start_auto_update(fbdev, display);
1272
b39a982d
TV		 1273 break;
1274
1275 case FB_BLANK_NORMAL:
1276 /* FB_BLANK_NORMAL could be implemented.
1277 * Needs DSS additions. */
1278 case FB_BLANK_VSYNC_SUSPEND:
1279 case FB_BLANK_HSYNC_SUSPEND:
1280 case FB_BLANK_POWERDOWN:
1281 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1282 goto exit;
1283
27cc213e
TV		 1284 if (d->auto_update_work_enabled)
1285 omapfb_stop_auto_update(fbdev, display);
1286
37ac60e4
TV		 1287 if (display->driver->suspend)
1288 r = display->driver->suspend(display);
b39a982d
TV		 1289
1290 break;
1291
1292 default:
1293 r = -EINVAL;
1294 }
1295
1296exit:
1297 omapfb_unlock(fbdev);
1298
b39a982d
TV		 1299 return r;
1300}
1301
1302#if 0
1303/* XXX fb_read and fb_write are needed for VRFB */
1304ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1305 size_t count, loff_t *ppos)
1306{
1307 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1308 /* XXX needed for VRFB */
1309 return count;
1310}
1311#endif
1312
1313static struct fb_ops omapfb_ops = {
1314 .owner = THIS_MODULE,
1315 .fb_open = omapfb_open,
1316 .fb_release = omapfb_release,
1317 .fb_fillrect = cfb_fillrect,
1318 .fb_copyarea = cfb_copyarea,
1319 .fb_imageblit = cfb_imageblit,
1320 .fb_blank = omapfb_blank,
1321 .fb_ioctl = omapfb_ioctl,
1322 .fb_check_var = omapfb_check_var,
1323 .fb_set_par = omapfb_set_par,
1324 .fb_pan_display = omapfb_pan_display,
1325 .fb_mmap = omapfb_mmap,
1326 .fb_setcolreg = omapfb_setcolreg,
1327 .fb_setcmap = omapfb_setcmap,
1328 /*.fb_write = omapfb_write,*/
1329};
1330
1331static void omapfb_free_fbmem(struct fb_info *fbi)
1332{
1333 struct omapfb_info *ofbi = FB2OFB(fbi);
1334 struct omapfb2_device *fbdev = ofbi->fbdev;
1335 struct omapfb2_mem_region *rg;
1336
078ff546
VS		 1337 rg = ofbi->region;
1338
1339 WARN_ON(atomic_read(&rg->map_count));
b39a982d
TV		 1340
1341 if (rg->paddr)
1342 if (omap_vram_free(rg->paddr, rg->size))
1343 dev_err(fbdev->dev, "VRAM FREE failed\n");
1344
1345 if (rg->vaddr)
1346 iounmap(rg->vaddr);
1347
1348 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1349 /* unmap the 0 angle rotation */
1350 if (rg->vrfb.vaddr[0]) {
1351 iounmap(rg->vrfb.vaddr[0]);
1352 omap_vrfb_release_ctx(&rg->vrfb);
f3a82d11 1353 rg->vrfb.vaddr[0] = NULL;
b39a982d
TV		 1354 }
1355 }
1356
1357 rg->vaddr = NULL;
1358 rg->paddr = 0;
1359 rg->alloc = 0;
1360 rg->size = 0;
1361}
1362
1363static void clear_fb_info(struct fb_info *fbi)
1364{
1365 memset(&fbi->var, 0, sizeof(fbi->var));
1366 memset(&fbi->fix, 0, sizeof(fbi->fix));
1367 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1368}
1369
1370static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1371{
1372 int i;
1373
1374 DBG("free all fbmem\n");
1375
1376 for (i = 0; i < fbdev->num_fbs; i++) {
1377 struct fb_info *fbi = fbdev->fbs[i];
1378 omapfb_free_fbmem(fbi);
1379 clear_fb_info(fbi);
1380 }
1381
1382 return 0;
1383}
1384
1385static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1386 unsigned long paddr)
1387{
1388 struct omapfb_info *ofbi = FB2OFB(fbi);
1389 struct omapfb2_device *fbdev = ofbi->fbdev;
1390 struct omapfb2_mem_region *rg;
1391 void __iomem *vaddr;
1392 int r;
1393
078ff546
VS		 1394 rg = ofbi->region;
1395
1396 rg->paddr = 0;
1397 rg->vaddr = NULL;
1398 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1399 rg->size = 0;
1400 rg->type = 0;
1401 rg->alloc = false;
1402 rg->map = false;
b39a982d
TV		 1403
1404 size = PAGE_ALIGN(size);
1405
1406 if (!paddr) {
1407 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
2a803c88 1408 r = omap_vram_alloc(size, &paddr);
b39a982d
TV		 1409 } else {
1410 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1411 ofbi->id);
1412 r = omap_vram_reserve(paddr, size);
1413 }
1414
1415 if (r) {
1416 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1417 return -ENOMEM;
1418 }
1419
1420 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1421 vaddr = ioremap_wc(paddr, size);
1422
1423 if (!vaddr) {
1424 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1425 omap_vram_free(paddr, size);
1426 return -ENOMEM;
1427 }
1428
1429 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1430 } else {
1431 r = omap_vrfb_request_ctx(&rg->vrfb);
1432 if (r) {
1433 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1434 return r;
1435 }
1436
1437 vaddr = NULL;
1438 }
1439
1440 rg->paddr = paddr;
1441 rg->vaddr = vaddr;
1442 rg->size = size;
1443 rg->alloc = 1;
1444
1445 return 0;
1446}
1447
1448/* allocate fbmem using display resolution as reference */
1449static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1450 unsigned long paddr)
1451{
1452 struct omapfb_info *ofbi = FB2OFB(fbi);
a2699504 1453 struct omapfb2_device *fbdev = ofbi->fbdev;
b39a982d
TV		 1454 struct omap_dss_device *display;
1455 int bytespp;
1456
1457 display = fb2display(fbi);
1458
1459 if (!display)
1460 return 0;
1461
a2699504 1462 switch (omapfb_get_recommended_bpp(fbdev, display)) {
b39a982d
TV		 1463 case 16:
1464 bytespp = 2;
1465 break;
1466 case 24:
1467 bytespp = 4;
1468 break;
1469 default:
1470 bytespp = 4;
1471 break;
1472 }
1473
1474 if (!size) {
1475 u16 w, h;
1476
96adcece 1477 display->driver->get_resolution(display, &w, &h);
b39a982d
TV		 1478
1479 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1480 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1481 omap_vrfb_min_phys_size(h, w, bytespp));
1482
1483 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1484 w * h * bytespp, size);
1485 } else {
1486 size = w * h * bytespp;
1487 }
1488 }
1489
1490 if (!size)
1491 return 0;
1492
1493 return omapfb_alloc_fbmem(fbi, size, paddr);
1494}
1495
b39a982d
TV		 1496static int omapfb_parse_vram_param(const char *param, int max_entries,
1497 unsigned long *sizes, unsigned long *paddrs)
1498{
1499 int fbnum;
1500 unsigned long size;
1501 unsigned long paddr = 0;
1502 char *p, *start;
1503
1504 start = (char *)param;
1505
1506 while (1) {
1507 p = start;
1508
1509 fbnum = simple_strtoul(p, &p, 10);
1510
3a028bb9 1511 if (p == start)
b39a982d
TV		 1512 return -EINVAL;
1513
1514 if (*p != ':')
1515 return -EINVAL;
1516
1517 if (fbnum >= max_entries)
1518 return -EINVAL;
1519
1520 size = memparse(p + 1, &p);
1521
1522 if (!size)
1523 return -EINVAL;
1524
1525 paddr = 0;
1526
1527 if (*p == '@') {
1528 paddr = simple_strtoul(p + 1, &p, 16);
1529
1530 if (!paddr)
1531 return -EINVAL;
1532
1533 }
1534
1535 paddrs[fbnum] = paddr;
1536 sizes[fbnum] = size;
1537
1538 if (*p == 0)
1539 break;
1540
1541 if (*p != ',')
1542 return -EINVAL;
1543
1544 ++p;
1545
1546 start = p;
1547 }
1548
1549 return 0;
1550}
1551
1552static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1553{
1554 int i, r;
1555 unsigned long vram_sizes[10];
1556 unsigned long vram_paddrs[10];
1557
1558 memset(&vram_sizes, 0, sizeof(vram_sizes));
1559 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1560
1561 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1562 vram_sizes, vram_paddrs)) {
1563 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1564
1565 memset(&vram_sizes, 0, sizeof(vram_sizes));
1566 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1567 }
1568
b39a982d
TV		 1569 for (i = 0; i < fbdev->num_fbs; i++) {
1570 /* allocate memory automatically only for fb0, or if
1571 * excplicitly defined with vram or plat data option */
1572 if (i == 0 || vram_sizes[i] != 0) {
1573 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1574 vram_sizes[i], vram_paddrs[i]);
1575
1576 if (r)
1577 return r;
1578 }
1579 }
1580
1581 for (i = 0; i < fbdev->num_fbs; i++) {
1582 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1583 struct omapfb2_mem_region *rg;
078ff546 1584 rg = ofbi->region;
b39a982d
TV		 1585
1586 DBG("region%d phys %08x virt %p size=%lu\n",
1587 i,
1588 rg->paddr,
1589 rg->vaddr,
1590 rg->size);
1591 }
1592
1593 return 0;
1594}
1595
1596int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1597{
1598 struct omapfb_info *ofbi = FB2OFB(fbi);
1599 struct omapfb2_device *fbdev = ofbi->fbdev;
1600 struct omap_dss_device *display = fb2display(fbi);
078ff546 1601 struct omapfb2_mem_region *rg = ofbi->region;
b39a982d
TV		 1602 unsigned long old_size = rg->size;
1603 unsigned long old_paddr = rg->paddr;
1604 int old_type = rg->type;
1605 int r;
1606
2a803c88 1607 if (type != OMAPFB_MEMTYPE_SDRAM)
b39a982d
TV		 1608 return -EINVAL;
1609
1610 size = PAGE_ALIGN(size);
1611
1612 if (old_size == size && old_type == type)
1613 return 0;
1614
18946f62
TV		 1615 if (display && display->driver->sync)
1616 display->driver->sync(display);
b39a982d
TV		 1617
1618 omapfb_free_fbmem(fbi);
1619
1620 if (size == 0) {
1621 clear_fb_info(fbi);
1622 return 0;
1623 }
1624
1625 r = omapfb_alloc_fbmem(fbi, size, 0);
1626
1627 if (r) {
1628 if (old_size)
1629 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1630
1631 if (rg->size == 0)
1632 clear_fb_info(fbi);
1633
1634 return r;
1635 }
1636
1637 if (old_size == size)
1638 return 0;
1639
1640 if (old_size == 0) {
1641 DBG("initializing fb %d\n", ofbi->id);
1642 r = omapfb_fb_init(fbdev, fbi);
1643 if (r) {
1644 DBG("omapfb_fb_init failed\n");
1645 goto err;
1646 }
1647 r = omapfb_apply_changes(fbi, 1);
1648 if (r) {
1649 DBG("omapfb_apply_changes failed\n");
1650 goto err;
1651 }
1652 } else {
1653 struct fb_var_screeninfo new_var;
1654 memcpy(&new_var, &fbi->var, sizeof(new_var));
1655 r = check_fb_var(fbi, &new_var);
1656 if (r)
1657 goto err;
1658 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1659 set_fb_fix(fbi);
1660 r = setup_vrfb_rotation(fbi);
1661 if (r)
1662 goto err;
1663 }
1664
1665 return 0;
1666err:
1667 omapfb_free_fbmem(fbi);
1668 clear_fb_info(fbi);
1669 return r;
1670}
1671
27cc213e
TV		 1672static void omapfb_auto_update_work(struct work_struct *work)
1673{
1674 struct omap_dss_device *dssdev;
1675 struct omap_dss_driver *dssdrv;
1676 struct omapfb_display_data *d;
1677 u16 w, h;
1678 unsigned int freq;
1679 struct omapfb2_device *fbdev;
1680
1681 d = container_of(work, struct omapfb_display_data,
1682 auto_update_work.work);
1683
1684 dssdev = d->dssdev;
1685 dssdrv = dssdev->driver;
1686 fbdev = d->fbdev;
1687
1688 if (!dssdrv || !dssdrv->update)
1689 return;
1690
1691 if (dssdrv->sync)
1692 dssdrv->sync(dssdev);
1693
1694 dssdrv->get_resolution(dssdev, &w, &h);
1695 dssdrv->update(dssdev, 0, 0, w, h);
1696
1697 freq = auto_update_freq;
1698 if (freq == 0)
1699 freq = 20;
1700 queue_delayed_work(fbdev->auto_update_wq,
1701 &d->auto_update_work, HZ / freq);
1702}
1703
1704void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1705 struct omap_dss_device *display)
1706{
1707 struct omapfb_display_data *d;
1708
1709 if (fbdev->auto_update_wq == NULL) {
1710 struct workqueue_struct *wq;
1711
1712 wq = create_singlethread_workqueue("omapfb_auto_update");
1713
1714 if (wq == NULL) {
1715 dev_err(fbdev->dev, "Failed to create workqueue for "
1716 "auto-update\n");
1717 return;
1718 }
1719
1720 fbdev->auto_update_wq = wq;
1721 }
1722
1723 d = get_display_data(fbdev, display);
1724
1725 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1726
1727 d->auto_update_work_enabled = true;
1728
1729 omapfb_auto_update_work(&d->auto_update_work.work);
1730}
1731
1732void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1733 struct omap_dss_device *display)
1734{
1735 struct omapfb_display_data *d;
1736
1737 d = get_display_data(fbdev, display);
1738
1739 cancel_delayed_work_sync(&d->auto_update_work);
1740
1741 d->auto_update_work_enabled = false;
1742}
1743
b39a982d
TV		 1744/* initialize fb_info, var, fix to something sane based on the display */
1745static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1746{
1747 struct fb_var_screeninfo *var = &fbi->var;
1748 struct omap_dss_device *display = fb2display(fbi);
1749 struct omapfb_info *ofbi = FB2OFB(fbi);
1750 int r = 0;
1751
1752 fbi->fbops = &omapfb_ops;
1753 fbi->flags = FBINFO_FLAG_DEFAULT;
1754 fbi->pseudo_palette = fbdev->pseudo_palette;
1755
078ff546 1756 if (ofbi->region->size == 0) {
b39a982d
TV		 1757 clear_fb_info(fbi);
1758 return 0;
1759 }
1760
1761 var->nonstd = 0;
1762 var->bits_per_pixel = 0;
1763
1764 var->rotate = def_rotate;
1765
b39a982d
TV		 1766 if (display) {
1767 u16 w, h;
1768 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1769
96adcece 1770 display->driver->get_resolution(display, &w, &h);
b39a982d
TV		 1771
1772 if (rotation == FB_ROTATE_CW ||
1773 rotation == FB_ROTATE_CCW) {
1774 var->xres = h;
1775 var->yres = w;
1776 } else {
1777 var->xres = w;
1778 var->yres = h;
1779 }
1780
1781 var->xres_virtual = var->xres;
1782 var->yres_virtual = var->yres;
1783
1784 if (!var->bits_per_pixel) {
a2699504 1785 switch (omapfb_get_recommended_bpp(fbdev, display)) {
b39a982d
TV		 1786 case 16:
1787 var->bits_per_pixel = 16;
1788 break;
1789 case 24:
1790 var->bits_per_pixel = 32;
1791 break;
1792 default:
1793 dev_err(fbdev->dev, "illegal display "
1794 "bpp\n");
1795 return -EINVAL;
1796 }
1797 }
1798 } else {
1799 /* if there's no display, let's just guess some basic values */
1800 var->xres = 320;
1801 var->yres = 240;
1802 var->xres_virtual = var->xres;
1803 var->yres_virtual = var->yres;
1804 if (!var->bits_per_pixel)
1805 var->bits_per_pixel = 16;
1806 }
1807
1808 r = check_fb_var(fbi, var);
1809 if (r)
1810 goto err;
1811
1812 set_fb_fix(fbi);
1813 r = setup_vrfb_rotation(fbi);
1814 if (r)
1815 goto err;
1816
1817 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1818 if (r)
1819 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1820
1821err:
1822 return r;
1823}
1824
1825static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1826{
1827 fb_dealloc_cmap(&fbi->cmap);
1828}
1829
1830
1831static void omapfb_free_resources(struct omapfb2_device *fbdev)
1832{
1833 int i;
1834
1835 DBG("free_resources\n");
1836
1837 if (fbdev == NULL)
1838 return;
1839
1840 for (i = 0; i < fbdev->num_fbs; i++)
1841 unregister_framebuffer(fbdev->fbs[i]);
1842
1843 /* free the reserved fbmem */
1844 omapfb_free_all_fbmem(fbdev);
1845
1846 for (i = 0; i < fbdev->num_fbs; i++) {
1847 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1848 framebuffer_release(fbdev->fbs[i]);
1849 }
1850
1851 for (i = 0; i < fbdev->num_displays; i++) {
065a40bd 1852 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
27cc213e
TV		 1853
1854 if (fbdev->displays[i].auto_update_work_enabled)
1855 omapfb_stop_auto_update(fbdev, dssdev);
1856
065a40bd
TV		 1857 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1858 dssdev->driver->disable(dssdev);
b39a982d 1859
065a40bd 1860 omap_dss_put_device(dssdev);
b39a982d
TV		 1861 }
1862
27cc213e
TV		 1863 if (fbdev->auto_update_wq != NULL) {
1864 flush_workqueue(fbdev->auto_update_wq);
1865 destroy_workqueue(fbdev->auto_update_wq);
1866 fbdev->auto_update_wq = NULL;
1867 }
1868
b39a982d
TV		 1869 dev_set_drvdata(fbdev->dev, NULL);
1870 kfree(fbdev);
1871}
1872
1873static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1874{
1875 int r, i;
1876
1877 fbdev->num_fbs = 0;
1878
1879 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1880
1881 /* allocate fb_infos */
1882 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1883 struct fb_info *fbi;
1884 struct omapfb_info *ofbi;
1885
1886 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1887 fbdev->dev);
1888
1889 if (fbi == NULL) {
1890 dev_err(fbdev->dev,
1891 "unable to allocate memory for plane info\n");
1892 return -ENOMEM;
1893 }
1894
1895 clear_fb_info(fbi);
1896
1897 fbdev->fbs[i] = fbi;
1898
1899 ofbi = FB2OFB(fbi);
1900 ofbi->fbdev = fbdev;
1901 ofbi->id = i;
1902
078ff546
VS		 1903 ofbi->region = &fbdev->regions[i];
1904 ofbi->region->id = i;
2f642a17 1905 init_rwsem(&ofbi->region->lock);
078ff546 1906
b39a982d
TV		 1907 /* assign these early, so that fb alloc can use them */
1908 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1909 OMAP_DSS_ROT_DMA;
1910 ofbi->mirror = def_mirror;
1911
1912 fbdev->num_fbs++;
1913 }
1914
1915 DBG("fb_infos allocated\n");
1916
1917 /* assign overlays for the fbs */
1918 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1919 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1920
1921 ofbi->overlays[0] = fbdev->overlays[i];
1922 ofbi->num_overlays = 1;
1923 }
1924
1925 /* allocate fb memories */
1926 r = omapfb_allocate_all_fbs(fbdev);
1927 if (r) {
1928 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1929 return r;
1930 }
1931
1932 DBG("fbmems allocated\n");
1933
1934 /* setup fb_infos */
1935 for (i = 0; i < fbdev->num_fbs; i++) {
430571d5
VS		 1936 struct fb_info *fbi = fbdev->fbs[i];
1937 struct omapfb_info *ofbi = FB2OFB(fbi);
1938
1939 omapfb_get_mem_region(ofbi->region);
1940 r = omapfb_fb_init(fbdev, fbi);
1941 omapfb_put_mem_region(ofbi->region);
1942
b39a982d
TV		 1943 if (r) {
1944 dev_err(fbdev->dev, "failed to setup fb_info\n");
1945 return r;
1946 }
1947 }
1948
1949 DBG("fb_infos initialized\n");
1950
1951 for (i = 0; i < fbdev->num_fbs; i++) {
1952 r = register_framebuffer(fbdev->fbs[i]);
1953 if (r != 0) {
1954 dev_err(fbdev->dev,
1955 "registering framebuffer %d failed\n", i);
1956 return r;
1957 }
1958 }
1959
1960 DBG("framebuffers registered\n");
1961
1962 for (i = 0; i < fbdev->num_fbs; i++) {
430571d5
VS		 1963 struct fb_info *fbi = fbdev->fbs[i];
1964 struct omapfb_info *ofbi = FB2OFB(fbi);
1965
1966 omapfb_get_mem_region(ofbi->region);
1967 r = omapfb_apply_changes(fbi, 1);
1968 omapfb_put_mem_region(ofbi->region);
1969
b39a982d
TV		 1970 if (r) {
1971 dev_err(fbdev->dev, "failed to change mode\n");
1972 return r;
1973 }
1974 }
1975
b39a982d
TV		 1976 /* Enable fb0 */
1977 if (fbdev->num_fbs > 0) {
1978 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1979
1980 if (ofbi->num_overlays > 0) {
1981 struct omap_overlay *ovl = ofbi->overlays[0];
1982
aaa874a9
TV		 1983 ovl->manager->apply(ovl->manager);
1984
b39a982d
TV		 1985 r = omapfb_overlay_enable(ovl, 1);
1986
1987 if (r) {
1988 dev_err(fbdev->dev,
1989 "failed to enable overlay\n");
1990 return r;
1991 }
1992 }
1993 }
1994
1995 DBG("create_framebuffers done\n");
1996
1997 return 0;
1998}
1999
2000static int omapfb_mode_to_timings(const char *mode_str,
783babf3 2001 struct omap_dss_device *display,
b39a982d
TV		 2002 struct omap_video_timings *timings, u8 *bpp)
2003{
897044e9
TV		 2004 struct fb_info *fbi;
2005 struct fb_var_screeninfo *var;
2006 struct fb_ops *fbops;
b39a982d
TV		 2007 int r;
2008
2009#ifdef CONFIG_OMAP2_DSS_VENC
2010 if (strcmp(mode_str, "pal") == 0) {
2011 *timings = omap_dss_pal_timings;
e8c66dcf 2012 *bpp = 24;
b39a982d
TV		 2013 return 0;
2014 } else if (strcmp(mode_str, "ntsc") == 0) {
2015 *timings = omap_dss_ntsc_timings;
e8c66dcf 2016 *bpp = 24;
b39a982d
TV		 2017 return 0;
2018 }
2019#endif
2020
2021 /* this is quite a hack, but I wanted to use the modedb and for
2022 * that we need fb_info and var, so we create dummy ones */
2023
897044e9
TV		 2024 *bpp = 0;
2025 fbi = NULL;
2026 var = NULL;
2027 fbops = NULL;
b39a982d 2028
897044e9
TV		 2029 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2030 if (fbi == NULL) {
2031 r = -ENOMEM;
2032 goto err;
2033 }
2034
2035 var = kzalloc(sizeof(*var), GFP_KERNEL);
2036 if (var == NULL) {
2037 r = -ENOMEM;
2038 goto err;
2039 }
2040
2041 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2042 if (fbops == NULL) {
2043 r = -ENOMEM;
2044 goto err;
2045 }
2046
2047 fbi->fbops = fbops;
2048
2049 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2050 if (r == 0) {
2051 r = -EINVAL;
2052 goto err;
b39a982d 2053 }
897044e9 2054
783babf3
AT		 2055 if (display->driver->get_timings) {
2056 display->driver->get_timings(display, timings);
2057 } else {
2058 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2059 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2060 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2061 }
2062
897044e9
TV		 2063 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2064 timings->hbp = var->left_margin;
2065 timings->hfp = var->right_margin;
2066 timings->vbp = var->upper_margin;
2067 timings->vfp = var->lower_margin;
2068 timings->hsw = var->hsync_len;
2069 timings->vsw = var->vsync_len;
2070 timings->x_res = var->xres;
2071 timings->y_res = var->yres;
783babf3
AT		 2072 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2073 OMAPDSS_SIG_ACTIVE_HIGH :
2074 OMAPDSS_SIG_ACTIVE_LOW;
2075 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2076 OMAPDSS_SIG_ACTIVE_HIGH :
2077 OMAPDSS_SIG_ACTIVE_LOW;
23bae3ad 2078 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
897044e9
TV		 2079
2080 switch (var->bits_per_pixel) {
2081 case 16:
2082 *bpp = 16;
2083 break;
2084 case 24:
2085 case 32:
2086 default:
2087 *bpp = 24;
2088 break;
2089 }
2090
2091 r = 0;
2092
2093err:
2094 kfree(fbi);
2095 kfree(var);
2096 kfree(fbops);
2097
2098 return r;
b39a982d
TV		 2099}
2100
a2699504
TV		 2101static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2102 struct omap_dss_device *display, char *mode_str)
b39a982d
TV		 2103{
2104 int r;
2105 u8 bpp;
371e2081 2106 struct omap_video_timings timings, temp_timings;
065a40bd 2107 struct omapfb_display_data *d;
b39a982d 2108
783babf3 2109 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
b39a982d
TV		 2110 if (r)
2111 return r;
2112
065a40bd
TV		 2113 d = get_display_data(fbdev, display);
2114 d->bpp_override = bpp;
b39a982d 2115
371e2081
JM		 2116 if (display->driver->check_timings) {
2117 r = display->driver->check_timings(display, &timings);
2118 if (r)
2119 return r;
2120 } else {
2121 /* If check_timings is not present compare xres and yres */
2122 if (display->driver->get_timings) {
2123 display->driver->get_timings(display, &temp_timings);
b39a982d 2124
371e2081
JM		 2125 if (temp_timings.x_res != timings.x_res ||
2126 temp_timings.y_res != timings.y_res)
2127 return -EINVAL;
2128 }
2129 }
b39a982d 2130
371e2081
JM		 2131 if (display->driver->set_timings)
2132 display->driver->set_timings(display, &timings);
b39a982d
TV		 2133
2134 return 0;
2135}
2136
a2699504
TV		 2137static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2138 struct omap_dss_device *dssdev)
2139{
065a40bd 2140 struct omapfb_display_data *d;
a2699504
TV		 2141
2142 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2143
065a40bd
TV		 2144 d = get_display_data(fbdev, dssdev);
2145
2146 if (d->bpp_override != 0)
2147 return d->bpp_override;
a2699504
TV		 2148
2149 return dssdev->driver->get_recommended_bpp(dssdev);
2150}
2151
b39a982d
TV		 2152static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2153{
2154 char *str, *options, *this_opt;
2155 int r = 0;
2156
36e8c27f
S		 2157 str = kstrdup(def_mode, GFP_KERNEL);
2158 if (!str)
2159 return -ENOMEM;
b39a982d
TV		 2160 options = str;
2161
2162 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2163 char *p, *display_str, *mode_str;
2164 struct omap_dss_device *display;
2165 int i;
2166
2167 p = strchr(this_opt, ':');
2168 if (!p) {
2169 r = -EINVAL;
2170 break;
2171 }
2172
2173 *p = 0;
2174 display_str = this_opt;
2175 mode_str = p + 1;
2176
2177 display = NULL;
2178 for (i = 0; i < fbdev->num_displays; ++i) {
065a40bd 2179 if (strcmp(fbdev->displays[i].dssdev->name,
b39a982d 2180 display_str) == 0) {
065a40bd 2181 display = fbdev->displays[i].dssdev;
b39a982d
TV		 2182 break;
2183 }
2184 }
2185
2186 if (!display) {
2187 r = -EINVAL;
2188 break;
2189 }
2190
a2699504 2191 r = omapfb_set_def_mode(fbdev, display, mode_str);
b39a982d
TV		 2192 if (r)
2193 break;
2194 }
2195
2196 kfree(str);
2197
2198 return r;
2199}
2200
dc891fab 2201static void fb_videomode_to_omap_timings(struct fb_videomode *m,
783babf3 2202 struct omap_dss_device *display,
dc891fab
TV		 2203 struct omap_video_timings *t)
2204{
783babf3
AT		 2205 if (display->driver->get_timings) {
2206 display->driver->get_timings(display, t);
2207 } else {
2208 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2209 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2210 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2211 }
2212
dc891fab
TV		 2213 t->x_res = m->xres;
2214 t->y_res = m->yres;
2215 t->pixel_clock = PICOS2KHZ(m->pixclock);
2216 t->hsw = m->hsync_len;
2217 t->hfp = m->right_margin;
2218 t->hbp = m->left_margin;
2219 t->vsw = m->vsync_len;
2220 t->vfp = m->lower_margin;
2221 t->vbp = m->upper_margin;
783babf3
AT		 2222 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2223 OMAPDSS_SIG_ACTIVE_HIGH :
2224 OMAPDSS_SIG_ACTIVE_LOW;
2225 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2226 OMAPDSS_SIG_ACTIVE_HIGH :
2227 OMAPDSS_SIG_ACTIVE_LOW;
23bae3ad 2228 t->interlace = m->vmode & FB_VMODE_INTERLACED;
dc891fab
TV		 2229}
2230
2231static int omapfb_find_best_mode(struct omap_dss_device *display,
2232 struct omap_video_timings *timings)
2233{
2234 struct fb_monspecs *specs;
2235 u8 *edid;
2236 int r, i, best_xres, best_idx, len;
2237
2238 if (!display->driver->read_edid)
2239 return -ENODEV;
2240
2241 len = 0x80 * 2;
2242 edid = kmalloc(len, GFP_KERNEL);
2243
2244 r = display->driver->read_edid(display, edid, len);
2245 if (r < 0)
2246 goto err1;
2247
2248 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2249
2250 fb_edid_to_monspecs(edid, specs);
2251
2252 if (edid[126] > 0)
2253 fb_edid_add_monspecs(edid + 0x80, specs);
2254
2255 best_xres = 0;
2256 best_idx = -1;
2257
2258 for (i = 0; i < specs->modedb_len; ++i) {
2259 struct fb_videomode *m;
2260 struct omap_video_timings t;
2261
2262 m = &specs->modedb[i];
2263
2264 if (m->pixclock == 0)
2265 continue;
2266
2267 /* skip repeated pixel modes */
2268 if (m->xres == 2880 || m->xres == 1440)
2269 continue;
2270
783babf3 2271 fb_videomode_to_omap_timings(m, display, &t);
dc891fab
TV		 2272
2273 r = display->driver->check_timings(display, &t);
2274 if (r == 0 && best_xres < m->xres) {
2275 best_xres = m->xres;
2276 best_idx = i;
2277 }
2278 }
2279
2280 if (best_xres == 0) {
2281 r = -ENOENT;
2282 goto err2;
2283 }
2284
783babf3
AT		 2285 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2286 timings);
dc891fab
TV		 2287
2288 r = 0;
2289
2290err2:
2291 fb_destroy_modedb(specs->modedb);
2292 kfree(specs);
2293err1:
2294 kfree(edid);
2295
2296 return r;
2297}
2298
91ac27a6
TV		 2299static int omapfb_init_display(struct omapfb2_device *fbdev,
2300 struct omap_dss_device *dssdev)
2301{
2302 struct omap_dss_driver *dssdrv = dssdev->driver;
27cc213e 2303 struct omapfb_display_data *d;
91ac27a6
TV		 2304 int r;
2305
2306 r = dssdrv->enable(dssdev);
2307 if (r) {
2308 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2309 dssdev->name);
2310 return r;
2311 }
2312
27cc213e
TV		 2313 d = get_display_data(fbdev, dssdev);
2314
2315 d->fbdev = fbdev;
2316
91ac27a6
TV		 2317 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2318 u16 w, h;
27cc213e
TV		 2319
2320 if (auto_update) {
2321 omapfb_start_auto_update(fbdev, dssdev);
2322 d->update_mode = OMAPFB_AUTO_UPDATE;
2323 } else {
2324 d->update_mode = OMAPFB_MANUAL_UPDATE;
2325 }
2326
91ac27a6
TV		 2327 if (dssdrv->enable_te) {
2328 r = dssdrv->enable_te(dssdev, 1);
2329 if (r) {
2330 dev_err(fbdev->dev, "Failed to set TE\n");
2331 return r;
2332 }
2333 }
2334
91ac27a6
TV		 2335 dssdrv->get_resolution(dssdev, &w, &h);
2336 r = dssdrv->update(dssdev, 0, 0, w, h);
2337 if (r) {
2338 dev_err(fbdev->dev,
2339 "Failed to update display\n");
2340 return r;
2341 }
2342 } else {
27cc213e 2343 d->update_mode = OMAPFB_AUTO_UPDATE;
91ac27a6
TV		 2344 }
2345
2346 return 0;
2347}
2348
d64f14e1 2349static int __init omapfb_probe(struct platform_device *pdev)
b39a982d
TV		 2350{
2351 struct omapfb2_device *fbdev = NULL;
2352 int r = 0;
2353 int i;
2354 struct omap_overlay *ovl;
2355 struct omap_dss_device *def_display;
2356 struct omap_dss_device *dssdev;
2357
2358 DBG("omapfb_probe\n");
2359
2360 if (pdev->num_resources != 0) {
2361 dev_err(&pdev->dev, "probed for an unknown device\n");
2362 r = -ENODEV;
2363 goto err0;
2364 }
2365
2366 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2367 if (fbdev == NULL) {
2368 r = -ENOMEM;
2369 goto err0;
2370 }
2371
41814cfc
SG		 2372 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2373 * available for OMAP2 and OMAP3
2374 */
2375 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2376 def_vrfb = 0;
2377 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2378 "ignoring the module parameter vrfb=y\n");
2379 }
2380
2381
b39a982d
TV		 2382 mutex_init(&fbdev->mtx);
2383
2384 fbdev->dev = &pdev->dev;
2385 platform_set_drvdata(pdev, fbdev);
2386
b3f91eb8 2387 r = 0;
b39a982d
TV		 2388 fbdev->num_displays = 0;
2389 dssdev = NULL;
2390 for_each_dss_dev(dssdev) {
27cc213e
TV		 2391 struct omapfb_display_data *d;
2392
b39a982d 2393 omap_dss_get_device(dssdev);
b3f91eb8 2394
807a7515 2395 if (!dssdev->driver) {
bab59b44 2396 dev_warn(&pdev->dev, "no driver for display: %s\n",
c5f18d7b 2397 dssdev->name);
bab59b44
TV		 2398 omap_dss_put_device(dssdev);
2399 continue;
807a7515 2400 }
b3f91eb8 2401
27cc213e
TV		 2402 d = &fbdev->displays[fbdev->num_displays++];
2403 d->dssdev = dssdev;
2404 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2405 d->update_mode = OMAPFB_MANUAL_UPDATE;
2406 else
2407 d->update_mode = OMAPFB_AUTO_UPDATE;
b39a982d
TV		 2408 }
2409
b3f91eb8
TV		 2410 if (r)
2411 goto cleanup;
2412
b39a982d
TV		 2413 if (fbdev->num_displays == 0) {
2414 dev_err(&pdev->dev, "no displays\n");
2415 r = -EINVAL;
2416 goto cleanup;
2417 }
2418
2419 fbdev->num_overlays = omap_dss_get_num_overlays();
2420 for (i = 0; i < fbdev->num_overlays; i++)
2421 fbdev->overlays[i] = omap_dss_get_overlay(i);
2422
2423 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2424 for (i = 0; i < fbdev->num_managers; i++)
2425 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2426
dc891fab
TV		 2427 /* gfx overlay should be the default one. find a display
2428 * connected to that, and use it as default display */
2429 ovl = omap_dss_get_overlay(0);
2430 if (ovl->manager && ovl->manager->device) {
2431 def_display = ovl->manager->device;
2432 } else {
2433 dev_warn(&pdev->dev, "cannot find default display\n");
2434 def_display = NULL;
2435 }
2436
b39a982d
TV		 2437 if (def_mode && strlen(def_mode) > 0) {
2438 if (omapfb_parse_def_modes(fbdev))
2439 dev_warn(&pdev->dev, "cannot parse default modes\n");
dc891fab
TV		 2440 } else if (def_display && def_display->driver->set_timings &&
2441 def_display->driver->check_timings) {
2442 struct omap_video_timings t;
2443
2444 r = omapfb_find_best_mode(def_display, &t);
2445
2446 if (r == 0)
2447 def_display->driver->set_timings(def_display, &t);
b39a982d
TV		 2448 }
2449
2450 r = omapfb_create_framebuffers(fbdev);
2451 if (r)
2452 goto cleanup;
2453
2454 for (i = 0; i < fbdev->num_managers; i++) {
2455 struct omap_overlay_manager *mgr;
2456 mgr = fbdev->managers[i];
2457 r = mgr->apply(mgr);
2458 if (r)
2459 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2460 }
2461
2462 DBG("mgr->apply'ed\n");
2463
b39a982d 2464 if (def_display) {
91ac27a6 2465 r = omapfb_init_display(fbdev, def_display);
6d2e0bd6 2466 if (r) {
91ac27a6
TV		 2467 dev_err(fbdev->dev,
2468 "failed to initialize default "
2469 "display\n");
6d2e0bd6
TV		 2470 goto cleanup;
2471 }
b39a982d
TV		 2472 }
2473
e26ed44c
AM		 2474 DBG("create sysfs for fbs\n");
2475 r = omapfb_create_sysfs(fbdev);
2476 if (r) {
2477 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2478 goto cleanup;
2479 }
2480
b39a982d
TV		 2481 return 0;
2482
2483cleanup:
2484 omapfb_free_resources(fbdev);
2485err0:
2486 dev_err(&pdev->dev, "failed to setup omapfb\n");
2487 return r;
2488}
2489
d64f14e1 2490static int __exit omapfb_remove(struct platform_device *pdev)
b39a982d
TV		 2491{
2492 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2493
2494 /* FIXME: wait till completion of pending events */
2495
2496 omapfb_remove_sysfs(fbdev);
2497
2498 omapfb_free_resources(fbdev);
2499
2500 return 0;
2501}
2502
2503static struct platform_driver omapfb_driver = {
d64f14e1 2504 .remove = __exit_p(omapfb_remove),
b39a982d
TV		 2505 .driver = {
2506 .name = "omapfb",
2507 .owner = THIS_MODULE,
2508 },
2509};
2510
2511static int __init omapfb_init(void)
2512{
2513 DBG("omapfb_init\n");
2514
d64f14e1 2515 if (platform_driver_probe(&omapfb_driver, omapfb_probe)) {
b39a982d
TV		 2516 printk(KERN_ERR "failed to register omapfb driver\n");
2517 return -ENODEV;
2518 }
2519
2520 return 0;
2521}
2522
2523static void __exit omapfb_exit(void)
2524{
2525 DBG("omapfb_exit\n");
2526 platform_driver_unregister(&omapfb_driver);
2527}
2528
2529module_param_named(mode, def_mode, charp, 0);
2530module_param_named(vram, def_vram, charp, 0);
2531module_param_named(rotate, def_rotate, int, 0);
2532module_param_named(vrfb, def_vrfb, bool, 0);
2533module_param_named(mirror, def_mirror, bool, 0);
2534
2535/* late_initcall to let panel/ctrl drivers loaded first.
2536 * I guess better option would be a more dynamic approach,
2537 * so that omapfb reacts to new panels when they are loaded */
2538late_initcall(omapfb_init);
2539/*module_init(omapfb_init);*/
2540module_exit(omapfb_exit);
2541
2542MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2543MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2544MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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