2 * linux/drivers/video/omap2/omapfb-main.c
4 * Copyright (C) 2008 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * Some code and ideas taken from drivers/video/omap/ driver
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.
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
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/>.
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/slab.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 <plat/display.h>
34 #include <plat/vram.h>
35 #include <plat/vrfb.h>
39 #define MODULE_NAME "omapfb"
41 #define OMAPFB_PLANE_XRES_MIN 8
42 #define OMAPFB_PLANE_YRES_MIN 8
44 static char *def_mode;
45 static char *def_vram;
47 static int def_rotate;
48 static int def_mirror;
51 unsigned int omapfb_debug;
52 module_param_named(debug, omapfb_debug, bool, 0644);
53 static unsigned int omapfb_test_pattern;
54 module_param_named(test, omapfb_test_pattern, bool, 0644);
57 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
58 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
59 struct omap_dss_device *dssdev);
62 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
64 struct fb_var_screeninfo *var = &fbi->var;
65 struct fb_fix_screeninfo *fix = &fbi->fix;
66 void __iomem *addr = fbi->screen_base;
67 const unsigned bytespp = var->bits_per_pixel >> 3;
68 const unsigned line_len = fix->line_length / bytespp;
70 int r = (color >> 16) & 0xff;
71 int g = (color >> 8) & 0xff;
72 int b = (color >> 0) & 0xff;
74 if (var->bits_per_pixel == 16) {
75 u16 __iomem *p = (u16 __iomem *)addr;
76 p += y * line_len + x;
82 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
83 } else if (var->bits_per_pixel == 24) {
84 u8 __iomem *p = (u8 __iomem *)addr;
85 p += (y * line_len + x) * 3;
87 __raw_writeb(b, p + 0);
88 __raw_writeb(g, p + 1);
89 __raw_writeb(r, p + 2);
90 } else if (var->bits_per_pixel == 32) {
91 u32 __iomem *p = (u32 __iomem *)addr;
92 p += y * line_len + x;
93 __raw_writel(color, p);
97 static void fill_fb(struct fb_info *fbi)
99 struct fb_var_screeninfo *var = &fbi->var;
100 const short w = var->xres_virtual;
101 const short h = var->yres_virtual;
102 void __iomem *addr = fbi->screen_base;
108 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
110 for (y = 0; y < h; y++) {
111 for (x = 0; x < w; x++) {
112 if (x < 20 && y < 20)
113 draw_pixel(fbi, x, y, 0xffffff);
114 else if (x < 20 && (y > 20 && y < h - 20))
115 draw_pixel(fbi, x, y, 0xff);
116 else if (y < 20 && (x > 20 && x < w - 20))
117 draw_pixel(fbi, x, y, 0xff00);
118 else if (x > w - 20 && (y > 20 && y < h - 20))
119 draw_pixel(fbi, x, y, 0xff0000);
120 else if (y > h - 20 && (x > 20 && x < w - 20))
121 draw_pixel(fbi, x, y, 0xffff00);
122 else if (x == 20 || x == w - 20 ||
123 y == 20 || y == h - 20)
124 draw_pixel(fbi, x, y, 0xffffff);
125 else if (x == y || w - x == h - y)
126 draw_pixel(fbi, x, y, 0xff00ff);
127 else if (w - x == y || x == h - y)
128 draw_pixel(fbi, x, y, 0x00ffff);
129 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
131 unsigned r = 0, g = 0, b = 0;
133 if (var->bits_per_pixel == 16) {
135 b = (y % 32) * 256 / 32;
137 g = (y % 64) * 256 / 64;
139 r = (y % 32) * 256 / 32;
148 c = (r << 16) | (g << 8) | (b << 0);
149 draw_pixel(fbi, x, y, c);
151 draw_pixel(fbi, x, y, 0);
158 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
160 const struct vrfb *vrfb = &ofbi->region->vrfb;
168 offset = vrfb->yoffset;
171 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
174 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
180 offset *= vrfb->bytespp;
185 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
187 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
188 return ofbi->region->vrfb.paddr[rot]
189 + omapfb_get_vrfb_offset(ofbi, rot);
191 return ofbi->region->paddr;
195 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
197 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
198 return ofbi->region->vrfb.paddr[0];
200 return ofbi->region->paddr;
203 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
205 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
206 return ofbi->region->vrfb.vaddr[0];
208 return ofbi->region->vaddr;
211 static struct omapfb_colormode omapfb_colormodes[] = {
213 .dssmode = OMAP_DSS_COLOR_UYVY,
214 .bits_per_pixel = 16,
215 .nonstd = OMAPFB_COLOR_YUV422,
217 .dssmode = OMAP_DSS_COLOR_YUV2,
218 .bits_per_pixel = 16,
219 .nonstd = OMAPFB_COLOR_YUY422,
221 .dssmode = OMAP_DSS_COLOR_ARGB16,
222 .bits_per_pixel = 16,
223 .red = { .length = 4, .offset = 8, .msb_right = 0 },
224 .green = { .length = 4, .offset = 4, .msb_right = 0 },
225 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
226 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
228 .dssmode = OMAP_DSS_COLOR_RGB16,
229 .bits_per_pixel = 16,
230 .red = { .length = 5, .offset = 11, .msb_right = 0 },
231 .green = { .length = 6, .offset = 5, .msb_right = 0 },
232 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
233 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
235 .dssmode = OMAP_DSS_COLOR_RGB24P,
236 .bits_per_pixel = 24,
237 .red = { .length = 8, .offset = 16, .msb_right = 0 },
238 .green = { .length = 8, .offset = 8, .msb_right = 0 },
239 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
240 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
242 .dssmode = OMAP_DSS_COLOR_RGB24U,
243 .bits_per_pixel = 32,
244 .red = { .length = 8, .offset = 16, .msb_right = 0 },
245 .green = { .length = 8, .offset = 8, .msb_right = 0 },
246 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
247 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
249 .dssmode = OMAP_DSS_COLOR_ARGB32,
250 .bits_per_pixel = 32,
251 .red = { .length = 8, .offset = 16, .msb_right = 0 },
252 .green = { .length = 8, .offset = 8, .msb_right = 0 },
253 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
254 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
256 .dssmode = OMAP_DSS_COLOR_RGBA32,
257 .bits_per_pixel = 32,
258 .red = { .length = 8, .offset = 24, .msb_right = 0 },
259 .green = { .length = 8, .offset = 16, .msb_right = 0 },
260 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
261 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
263 .dssmode = OMAP_DSS_COLOR_RGBX32,
264 .bits_per_pixel = 32,
265 .red = { .length = 8, .offset = 24, .msb_right = 0 },
266 .green = { .length = 8, .offset = 16, .msb_right = 0 },
267 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
268 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
272 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
273 struct omapfb_colormode *color)
275 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
277 return f1->length == f2->length &&
278 f1->offset == f2->offset &&
279 f1->msb_right == f2->msb_right;
282 if (var->bits_per_pixel == 0 ||
283 var->red.length == 0 ||
284 var->blue.length == 0 ||
285 var->green.length == 0)
288 return var->bits_per_pixel == color->bits_per_pixel &&
289 cmp_component(&var->red, &color->red) &&
290 cmp_component(&var->green, &color->green) &&
291 cmp_component(&var->blue, &color->blue) &&
292 cmp_component(&var->transp, &color->transp);
295 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
296 struct omapfb_colormode *color)
298 var->bits_per_pixel = color->bits_per_pixel;
299 var->nonstd = color->nonstd;
300 var->red = color->red;
301 var->green = color->green;
302 var->blue = color->blue;
303 var->transp = color->transp;
306 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
307 enum omap_color_mode *mode)
309 enum omap_color_mode dssmode;
312 /* first match with nonstd field */
314 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
315 struct omapfb_colormode *m = &omapfb_colormodes[i];
316 if (var->nonstd == m->nonstd) {
317 assign_colormode_to_var(var, m);
326 /* then try exact match of bpp and colors */
327 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
328 struct omapfb_colormode *m = &omapfb_colormodes[i];
329 if (cmp_var_to_colormode(var, m)) {
330 assign_colormode_to_var(var, m);
336 /* match with bpp if user has not filled color fields
338 switch (var->bits_per_pixel) {
340 dssmode = OMAP_DSS_COLOR_CLUT1;
343 dssmode = OMAP_DSS_COLOR_CLUT2;
346 dssmode = OMAP_DSS_COLOR_CLUT4;
349 dssmode = OMAP_DSS_COLOR_CLUT8;
352 dssmode = OMAP_DSS_COLOR_RGB12U;
355 dssmode = OMAP_DSS_COLOR_RGB16;
358 dssmode = OMAP_DSS_COLOR_RGB24P;
361 dssmode = OMAP_DSS_COLOR_RGB24U;
367 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
368 struct omapfb_colormode *m = &omapfb_colormodes[i];
369 if (dssmode == m->dssmode) {
370 assign_colormode_to_var(var, m);
379 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
381 int xres_min = OMAPFB_PLANE_XRES_MIN;
383 int yres_min = OMAPFB_PLANE_YRES_MIN;
386 /* XXX: some applications seem to set virtual res to 0. */
387 if (var->xres_virtual == 0)
388 var->xres_virtual = var->xres;
390 if (var->yres_virtual == 0)
391 var->yres_virtual = var->yres;
393 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
396 if (var->xres < xres_min)
397 var->xres = xres_min;
398 if (var->yres < yres_min)
399 var->yres = yres_min;
400 if (var->xres > xres_max)
401 var->xres = xres_max;
402 if (var->yres > yres_max)
403 var->yres = yres_max;
405 if (var->xres > var->xres_virtual)
406 var->xres = var->xres_virtual;
407 if (var->yres > var->yres_virtual)
408 var->yres = var->yres_virtual;
413 static void shrink_height(unsigned long max_frame_size,
414 struct fb_var_screeninfo *var)
416 DBG("can't fit FB into memory, reducing y\n");
417 var->yres_virtual = max_frame_size /
418 (var->xres_virtual * var->bits_per_pixel >> 3);
420 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
421 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
423 if (var->yres > var->yres_virtual)
424 var->yres = var->yres_virtual;
427 static void shrink_width(unsigned long max_frame_size,
428 struct fb_var_screeninfo *var)
430 DBG("can't fit FB into memory, reducing x\n");
431 var->xres_virtual = max_frame_size / var->yres_virtual /
432 (var->bits_per_pixel >> 3);
434 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
435 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
437 if (var->xres > var->xres_virtual)
438 var->xres = var->xres_virtual;
441 static int check_vrfb_fb_size(unsigned long region_size,
442 const struct fb_var_screeninfo *var)
444 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
445 var->yres_virtual, var->bits_per_pixel >> 3);
447 return min_phys_size > region_size ? -EINVAL : 0;
450 static int check_fb_size(const struct omapfb_info *ofbi,
451 struct fb_var_screeninfo *var)
453 unsigned long max_frame_size = ofbi->region->size;
454 int bytespp = var->bits_per_pixel >> 3;
455 unsigned long line_size = var->xres_virtual * bytespp;
457 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
458 /* One needs to check for both VRFB and OMAPFB limitations. */
459 if (check_vrfb_fb_size(max_frame_size, var))
460 shrink_height(omap_vrfb_max_height(
461 max_frame_size, var->xres_virtual, bytespp) *
464 if (check_vrfb_fb_size(max_frame_size, var)) {
465 DBG("cannot fit FB to memory\n");
472 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
474 if (line_size * var->yres_virtual > max_frame_size)
475 shrink_height(max_frame_size, var);
477 if (line_size * var->yres_virtual > max_frame_size) {
478 shrink_width(max_frame_size, var);
479 line_size = var->xres_virtual * bytespp;
482 if (line_size * var->yres_virtual > max_frame_size) {
483 DBG("cannot fit FB to memory\n");
491 * Consider if VRFB assisted rotation is in use and if the virtual space for
492 * the zero degree view needs to be mapped. The need for mapping also acts as
493 * the trigger for setting up the hardware on the context in question. This
494 * ensures that one does not attempt to access the virtual view before the
495 * hardware is serving the address translations.
497 static int setup_vrfb_rotation(struct fb_info *fbi)
499 struct omapfb_info *ofbi = FB2OFB(fbi);
500 struct omapfb2_mem_region *rg = ofbi->region;
501 struct vrfb *vrfb = &rg->vrfb;
502 struct fb_var_screeninfo *var = &fbi->var;
503 struct fb_fix_screeninfo *fix = &fbi->fix;
506 enum omap_color_mode mode;
510 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
513 DBG("setup_vrfb_rotation\n");
515 r = fb_mode_to_dss_mode(var, &mode);
519 bytespp = var->bits_per_pixel >> 3;
521 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
523 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
524 * is enabled/disabled, or if bytes per pixel changes */
526 /* XXX we shouldn't allow this when framebuffer is mmapped */
530 if (yuv_mode != vrfb->yuv_mode)
532 else if (bytespp != vrfb->bytespp)
534 else if (vrfb->xres != var->xres_virtual ||
535 vrfb->yres != var->yres_virtual)
538 if (vrfb->vaddr[0] && reconf) {
539 fbi->screen_base = NULL;
542 iounmap(vrfb->vaddr[0]);
543 vrfb->vaddr[0] = NULL;
544 DBG("setup_vrfb_rotation: reset fb\n");
550 omap_vrfb_setup(&rg->vrfb, rg->paddr,
555 /* Now one can ioremap the 0 angle view */
556 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
560 /* used by open/write in fbmem.c */
561 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
563 fix->smem_start = ofbi->region->vrfb.paddr[0];
565 switch (var->nonstd) {
566 case OMAPFB_COLOR_YUV422:
567 case OMAPFB_COLOR_YUY422:
569 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
577 fix->smem_len = var->yres_virtual * fix->line_length;
582 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
583 struct fb_var_screeninfo *var)
587 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
588 struct omapfb_colormode *mode = &omapfb_colormodes[i];
589 if (dssmode == mode->dssmode) {
590 assign_colormode_to_var(var, mode);
597 void set_fb_fix(struct fb_info *fbi)
599 struct fb_fix_screeninfo *fix = &fbi->fix;
600 struct fb_var_screeninfo *var = &fbi->var;
601 struct omapfb_info *ofbi = FB2OFB(fbi);
602 struct omapfb2_mem_region *rg = ofbi->region;
606 /* used by open/write in fbmem.c */
607 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
609 /* used by mmap in fbmem.c */
610 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
611 switch (var->nonstd) {
612 case OMAPFB_COLOR_YUV422:
613 case OMAPFB_COLOR_YUY422:
615 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
623 fix->smem_len = var->yres_virtual * fix->line_length;
626 (var->xres_virtual * var->bits_per_pixel) >> 3;
627 fix->smem_len = rg->size;
630 fix->smem_start = omapfb_get_region_paddr(ofbi);
632 fix->type = FB_TYPE_PACKED_PIXELS;
635 fix->visual = FB_VISUAL_PSEUDOCOLOR;
637 switch (var->bits_per_pixel) {
642 fix->visual = FB_VISUAL_TRUECOLOR;
643 /* 12bpp is stored in 16 bits */
649 fix->visual = FB_VISUAL_PSEUDOCOLOR;
654 fix->accel = FB_ACCEL_NONE;
660 /* check new var and possibly modify it to be ok */
661 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
663 struct omapfb_info *ofbi = FB2OFB(fbi);
664 struct omap_dss_device *display = fb2display(fbi);
665 enum omap_color_mode mode = 0;
669 DBG("check_fb_var %d\n", ofbi->id);
671 WARN_ON(!atomic_read(&ofbi->region->lock_count));
673 r = fb_mode_to_dss_mode(var, &mode);
675 DBG("cannot convert var to omap dss mode\n");
679 for (i = 0; i < ofbi->num_overlays; ++i) {
680 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
681 DBG("invalid mode\n");
689 if (check_fb_res_bounds(var))
692 /* When no memory is allocated ignore the size check */
693 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
696 if (var->xres + var->xoffset > var->xres_virtual)
697 var->xoffset = var->xres_virtual - var->xres;
698 if (var->yres + var->yoffset > var->yres_virtual)
699 var->yoffset = var->yres_virtual - var->yres;
701 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
702 var->xres, var->yres,
703 var->xres_virtual, var->yres_virtual);
709 if (display && display->driver->get_timings) {
710 struct omap_video_timings timings;
711 display->driver->get_timings(display, &timings);
713 /* pixclock in ps, the rest in pixclock */
714 var->pixclock = timings.pixel_clock != 0 ?
715 KHZ2PICOS(timings.pixel_clock) :
717 var->left_margin = timings.hbp;
718 var->right_margin = timings.hfp;
719 var->upper_margin = timings.vbp;
720 var->lower_margin = timings.vfp;
721 var->hsync_len = timings.hsw;
722 var->vsync_len = timings.vsw;
725 var->left_margin = 0;
726 var->right_margin = 0;
727 var->upper_margin = 0;
728 var->lower_margin = 0;
733 /* TODO: get these from panel->config */
734 var->vmode = FB_VMODE_NONINTERLACED;
741 * ---------------------------------------------------------------------------
742 * fbdev framework callbacks
743 * ---------------------------------------------------------------------------
745 static int omapfb_open(struct fb_info *fbi, int user)
750 static int omapfb_release(struct fb_info *fbi, int user)
753 struct omapfb_info *ofbi = FB2OFB(fbi);
754 struct omapfb2_device *fbdev = ofbi->fbdev;
755 struct omap_dss_device *display = fb2display(fbi);
757 DBG("Closing fb with plane index %d\n", ofbi->id);
761 if (display && display->get_update_mode && display->update) {
762 /* XXX this update should be removed, I think. But it's
763 * good for debugging */
764 if (display->get_update_mode(display) ==
765 OMAP_DSS_UPDATE_MANUAL) {
769 display->sync(display);
771 display->get_resolution(display, &w, &h);
772 display->update(display, 0, 0, w, h);
776 if (display && display->sync)
777 display->sync(display);
779 omapfb_unlock(fbdev);
784 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
785 const struct fb_fix_screeninfo *fix, int rotation)
789 offset = var->yoffset * fix->line_length +
790 var->xoffset * (var->bits_per_pixel >> 3);
795 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
796 const struct fb_fix_screeninfo *fix, int rotation)
800 if (rotation == FB_ROTATE_UD)
801 offset = (var->yres_virtual - var->yres) *
803 else if (rotation == FB_ROTATE_CW)
804 offset = (var->yres_virtual - var->yres) *
805 (var->bits_per_pixel >> 3);
809 if (rotation == FB_ROTATE_UR)
810 offset += var->yoffset * fix->line_length +
811 var->xoffset * (var->bits_per_pixel >> 3);
812 else if (rotation == FB_ROTATE_UD)
813 offset -= var->yoffset * fix->line_length +
814 var->xoffset * (var->bits_per_pixel >> 3);
815 else if (rotation == FB_ROTATE_CW)
816 offset -= var->xoffset * fix->line_length +
817 var->yoffset * (var->bits_per_pixel >> 3);
818 else if (rotation == FB_ROTATE_CCW)
819 offset += var->xoffset * fix->line_length +
820 var->yoffset * (var->bits_per_pixel >> 3);
825 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
826 const struct fb_var_screeninfo *var,
827 const struct fb_fix_screeninfo *fix,
828 int rotation, u32 *paddr, void __iomem **vaddr)
831 void __iomem *data_start_v;
834 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
835 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
838 data_start_p = omapfb_get_region_paddr(ofbi);
839 data_start_v = omapfb_get_region_vaddr(ofbi);
842 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
843 offset = calc_rotation_offset_vrfb(var, fix, rotation);
845 offset = calc_rotation_offset_dma(var, fix, rotation);
847 data_start_p += offset;
848 data_start_v += offset;
851 DBG("offset %d, %d = %d\n",
852 var->xoffset, var->yoffset, offset);
854 DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
856 *paddr = data_start_p;
857 *vaddr = data_start_v;
860 /* setup overlay according to the fb */
861 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
862 u16 posx, u16 posy, u16 outw, u16 outh)
865 struct omapfb_info *ofbi = FB2OFB(fbi);
866 struct fb_var_screeninfo *var = &fbi->var;
867 struct fb_fix_screeninfo *fix = &fbi->fix;
868 enum omap_color_mode mode = 0;
869 u32 data_start_p = 0;
870 void __iomem *data_start_v = NULL;
871 struct omap_overlay_info info;
875 int rotation = var->rotate;
878 WARN_ON(!atomic_read(&ofbi->region->lock_count));
880 for (i = 0; i < ofbi->num_overlays; i++) {
881 if (ovl != ofbi->overlays[i])
884 rotation = (rotation + ofbi->rotation[i]) % 4;
888 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
889 posx, posy, outw, outh);
891 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
899 if (ofbi->region->size)
900 omapfb_calc_addr(ofbi, var, fix, rotation,
901 &data_start_p, &data_start_v);
903 r = fb_mode_to_dss_mode(var, &mode);
905 DBG("fb_mode_to_dss_mode failed");
909 switch (var->nonstd) {
910 case OMAPFB_COLOR_YUV422:
911 case OMAPFB_COLOR_YUY422:
912 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
913 screen_width = fix->line_length
914 / (var->bits_per_pixel >> 2);
918 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
922 ovl->get_overlay_info(ovl, &info);
924 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
927 mirror = ofbi->mirror;
929 info.paddr = data_start_p;
930 info.vaddr = data_start_v;
931 info.screen_width = screen_width;
934 info.color_mode = mode;
935 info.rotation_type = ofbi->rotation_type;
936 info.rotation = rotation;
937 info.mirror = mirror;
941 info.out_width = outw;
942 info.out_height = outh;
944 r = ovl->set_overlay_info(ovl, &info);
946 DBG("ovl->setup_overlay_info failed\n");
953 DBG("setup_overlay failed\n");
957 /* apply var to the overlay */
958 int omapfb_apply_changes(struct fb_info *fbi, int init)
961 struct omapfb_info *ofbi = FB2OFB(fbi);
962 struct fb_var_screeninfo *var = &fbi->var;
963 struct omap_overlay *ovl;
969 if (omapfb_test_pattern)
973 WARN_ON(!atomic_read(&ofbi->region->lock_count));
975 for (i = 0; i < ofbi->num_overlays; i++) {
976 ovl = ofbi->overlays[i];
978 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
980 if (ofbi->region->size == 0) {
981 /* the fb is not available. disable the overlay */
982 omapfb_overlay_enable(ovl, 0);
983 if (!init && ovl->manager)
984 ovl->manager->apply(ovl->manager);
988 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
989 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
990 if (rotation == FB_ROTATE_CW ||
991 rotation == FB_ROTATE_CCW) {
999 outw = ovl->info.out_width;
1000 outh = ovl->info.out_height;
1007 posx = ovl->info.pos_x;
1008 posy = ovl->info.pos_y;
1011 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
1015 if (!init && ovl->manager)
1016 ovl->manager->apply(ovl->manager);
1020 DBG("apply_changes failed\n");
1024 /* checks var and eventually tweaks it to something supported,
1025 * DO NOT MODIFY PAR */
1026 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1028 struct omapfb_info *ofbi = FB2OFB(fbi);
1031 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1033 omapfb_get_mem_region(ofbi->region);
1035 r = check_fb_var(fbi, var);
1037 omapfb_put_mem_region(ofbi->region);
1042 /* set the video mode according to info->var */
1043 static int omapfb_set_par(struct fb_info *fbi)
1045 struct omapfb_info *ofbi = FB2OFB(fbi);
1048 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1050 omapfb_get_mem_region(ofbi->region);
1054 r = setup_vrfb_rotation(fbi);
1058 r = omapfb_apply_changes(fbi, 0);
1061 omapfb_put_mem_region(ofbi->region);
1066 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1067 struct fb_info *fbi)
1069 struct omapfb_info *ofbi = FB2OFB(fbi);
1070 struct fb_var_screeninfo new_var;
1073 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1075 if (var->xoffset == fbi->var.xoffset &&
1076 var->yoffset == fbi->var.yoffset)
1080 new_var.xoffset = var->xoffset;
1081 new_var.yoffset = var->yoffset;
1085 omapfb_get_mem_region(ofbi->region);
1087 r = omapfb_apply_changes(fbi, 0);
1089 omapfb_put_mem_region(ofbi->region);
1094 static void mmap_user_open(struct vm_area_struct *vma)
1096 struct omapfb2_mem_region *rg = vma->vm_private_data;
1098 omapfb_get_mem_region(rg);
1099 atomic_inc(&rg->map_count);
1100 omapfb_put_mem_region(rg);
1103 static void mmap_user_close(struct vm_area_struct *vma)
1105 struct omapfb2_mem_region *rg = vma->vm_private_data;
1107 omapfb_get_mem_region(rg);
1108 atomic_dec(&rg->map_count);
1109 omapfb_put_mem_region(rg);
1112 static struct vm_operations_struct mmap_user_ops = {
1113 .open = mmap_user_open,
1114 .close = mmap_user_close,
1117 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1119 struct omapfb_info *ofbi = FB2OFB(fbi);
1120 struct fb_fix_screeninfo *fix = &fbi->fix;
1121 struct omapfb2_mem_region *rg;
1123 unsigned long start;
1127 if (vma->vm_end - vma->vm_start == 0)
1129 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1131 off = vma->vm_pgoff << PAGE_SHIFT;
1133 rg = omapfb_get_mem_region(ofbi->region);
1135 start = omapfb_get_region_paddr(ofbi);
1136 len = fix->smem_len;
1139 if ((vma->vm_end - vma->vm_start + off) > len)
1144 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1146 vma->vm_pgoff = off >> PAGE_SHIFT;
1147 vma->vm_flags |= VM_IO | VM_RESERVED;
1148 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1149 vma->vm_ops = &mmap_user_ops;
1150 vma->vm_private_data = rg;
1151 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1152 vma->vm_end - vma->vm_start,
1153 vma->vm_page_prot)) {
1158 /* vm_ops.open won't be called for mmap itself. */
1159 atomic_inc(&rg->map_count);
1161 omapfb_put_mem_region(rg);
1166 omapfb_put_mem_region(ofbi->region);
1171 /* Store a single color palette entry into a pseudo palette or the hardware
1172 * palette if one is available. For now we support only 16bpp and thus store
1173 * the entry only to the pseudo palette.
1175 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1176 u_int blue, u_int transp, int update_hw_pal)
1178 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1179 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1180 struct fb_var_screeninfo *var = &fbi->var;
1183 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1185 /*switch (plane->color_mode) {*/
1187 case OMAPFB_COLOR_YUV422:
1188 case OMAPFB_COLOR_YUV420:
1189 case OMAPFB_COLOR_YUY422:
1192 case OMAPFB_COLOR_CLUT_8BPP:
1193 case OMAPFB_COLOR_CLUT_4BPP:
1194 case OMAPFB_COLOR_CLUT_2BPP:
1195 case OMAPFB_COLOR_CLUT_1BPP:
1197 if (fbdev->ctrl->setcolreg)
1198 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1199 transp, update_hw_pal);
1204 case OMAPFB_COLOR_RGB565:
1205 case OMAPFB_COLOR_RGB444:
1206 case OMAPFB_COLOR_RGB24P:
1207 case OMAPFB_COLOR_RGB24U:
1213 pal = ((red >> (16 - var->red.length)) <<
1215 ((green >> (16 - var->green.length)) <<
1216 var->green.offset) |
1217 (blue >> (16 - var->blue.length));
1218 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1227 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1228 u_int transp, struct fb_info *info)
1232 return _setcolreg(info, regno, red, green, blue, transp, 1);
1235 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1237 int count, index, r;
1238 u16 *red, *green, *blue, *transp;
1244 green = cmap->green;
1246 transp = cmap->transp;
1247 index = cmap->start;
1249 for (count = 0; count < cmap->len; count++) {
1252 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1253 count == cmap->len - 1);
1261 static int omapfb_blank(int blank, struct fb_info *fbi)
1263 struct omapfb_info *ofbi = FB2OFB(fbi);
1264 struct omapfb2_device *fbdev = ofbi->fbdev;
1265 struct omap_dss_device *display = fb2display(fbi);
1275 case FB_BLANK_UNBLANK:
1276 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1279 if (display->driver->resume)
1280 r = display->driver->resume(display);
1282 if (r == 0 && display->driver->get_update_mode &&
1283 display->driver->get_update_mode(display) ==
1284 OMAP_DSS_UPDATE_MANUAL)
1289 case FB_BLANK_NORMAL:
1290 /* FB_BLANK_NORMAL could be implemented.
1291 * Needs DSS additions. */
1292 case FB_BLANK_VSYNC_SUSPEND:
1293 case FB_BLANK_HSYNC_SUSPEND:
1294 case FB_BLANK_POWERDOWN:
1295 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1298 if (display->driver->suspend)
1299 r = display->driver->suspend(display);
1308 omapfb_unlock(fbdev);
1310 if (r == 0 && do_update && display->driver->update) {
1312 display->driver->get_resolution(display, &w, &h);
1314 r = display->driver->update(display, 0, 0, w, h);
1321 /* XXX fb_read and fb_write are needed for VRFB */
1322 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1323 size_t count, loff_t *ppos)
1325 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1326 /* XXX needed for VRFB */
1331 static struct fb_ops omapfb_ops = {
1332 .owner = THIS_MODULE,
1333 .fb_open = omapfb_open,
1334 .fb_release = omapfb_release,
1335 .fb_fillrect = cfb_fillrect,
1336 .fb_copyarea = cfb_copyarea,
1337 .fb_imageblit = cfb_imageblit,
1338 .fb_blank = omapfb_blank,
1339 .fb_ioctl = omapfb_ioctl,
1340 .fb_check_var = omapfb_check_var,
1341 .fb_set_par = omapfb_set_par,
1342 .fb_pan_display = omapfb_pan_display,
1343 .fb_mmap = omapfb_mmap,
1344 .fb_setcolreg = omapfb_setcolreg,
1345 .fb_setcmap = omapfb_setcmap,
1346 /*.fb_write = omapfb_write,*/
1349 static void omapfb_free_fbmem(struct fb_info *fbi)
1351 struct omapfb_info *ofbi = FB2OFB(fbi);
1352 struct omapfb2_device *fbdev = ofbi->fbdev;
1353 struct omapfb2_mem_region *rg;
1357 WARN_ON(atomic_read(&rg->map_count));
1360 if (omap_vram_free(rg->paddr, rg->size))
1361 dev_err(fbdev->dev, "VRAM FREE failed\n");
1366 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1367 /* unmap the 0 angle rotation */
1368 if (rg->vrfb.vaddr[0]) {
1369 iounmap(rg->vrfb.vaddr[0]);
1370 omap_vrfb_release_ctx(&rg->vrfb);
1371 rg->vrfb.vaddr[0] = NULL;
1381 static void clear_fb_info(struct fb_info *fbi)
1383 memset(&fbi->var, 0, sizeof(fbi->var));
1384 memset(&fbi->fix, 0, sizeof(fbi->fix));
1385 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1388 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1392 DBG("free all fbmem\n");
1394 for (i = 0; i < fbdev->num_fbs; i++) {
1395 struct fb_info *fbi = fbdev->fbs[i];
1396 omapfb_free_fbmem(fbi);
1403 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1404 unsigned long paddr)
1406 struct omapfb_info *ofbi = FB2OFB(fbi);
1407 struct omapfb2_device *fbdev = ofbi->fbdev;
1408 struct omapfb2_mem_region *rg;
1409 void __iomem *vaddr;
1416 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1422 size = PAGE_ALIGN(size);
1425 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1426 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1428 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1430 r = omap_vram_reserve(paddr, size);
1434 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1438 if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1439 vaddr = ioremap_wc(paddr, size);
1442 dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1443 omap_vram_free(paddr, size);
1447 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1449 r = omap_vrfb_request_ctx(&rg->vrfb);
1451 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1466 /* allocate fbmem using display resolution as reference */
1467 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1468 unsigned long paddr)
1470 struct omapfb_info *ofbi = FB2OFB(fbi);
1471 struct omapfb2_device *fbdev = ofbi->fbdev;
1472 struct omap_dss_device *display;
1475 display = fb2display(fbi);
1480 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1495 display->driver->get_resolution(display, &w, &h);
1497 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1498 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1499 omap_vrfb_min_phys_size(h, w, bytespp));
1501 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1502 w * h * bytespp, size);
1504 size = w * h * bytespp;
1511 return omapfb_alloc_fbmem(fbi, size, paddr);
1514 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1516 enum omap_color_mode mode;
1519 case OMAPFB_COLOR_RGB565:
1520 mode = OMAP_DSS_COLOR_RGB16;
1522 case OMAPFB_COLOR_YUV422:
1523 mode = OMAP_DSS_COLOR_YUV2;
1525 case OMAPFB_COLOR_CLUT_8BPP:
1526 mode = OMAP_DSS_COLOR_CLUT8;
1528 case OMAPFB_COLOR_CLUT_4BPP:
1529 mode = OMAP_DSS_COLOR_CLUT4;
1531 case OMAPFB_COLOR_CLUT_2BPP:
1532 mode = OMAP_DSS_COLOR_CLUT2;
1534 case OMAPFB_COLOR_CLUT_1BPP:
1535 mode = OMAP_DSS_COLOR_CLUT1;
1537 case OMAPFB_COLOR_RGB444:
1538 mode = OMAP_DSS_COLOR_RGB12U;
1540 case OMAPFB_COLOR_YUY422:
1541 mode = OMAP_DSS_COLOR_UYVY;
1543 case OMAPFB_COLOR_ARGB16:
1544 mode = OMAP_DSS_COLOR_ARGB16;
1546 case OMAPFB_COLOR_RGB24U:
1547 mode = OMAP_DSS_COLOR_RGB24U;
1549 case OMAPFB_COLOR_RGB24P:
1550 mode = OMAP_DSS_COLOR_RGB24P;
1552 case OMAPFB_COLOR_ARGB32:
1553 mode = OMAP_DSS_COLOR_ARGB32;
1555 case OMAPFB_COLOR_RGBA32:
1556 mode = OMAP_DSS_COLOR_RGBA32;
1558 case OMAPFB_COLOR_RGBX32:
1559 mode = OMAP_DSS_COLOR_RGBX32;
1568 static int omapfb_parse_vram_param(const char *param, int max_entries,
1569 unsigned long *sizes, unsigned long *paddrs)
1573 unsigned long paddr = 0;
1576 start = (char *)param;
1581 fbnum = simple_strtoul(p, &p, 10);
1589 if (fbnum >= max_entries)
1592 size = memparse(p + 1, &p);
1600 paddr = simple_strtoul(p + 1, &p, 16);
1607 paddrs[fbnum] = paddr;
1608 sizes[fbnum] = size;
1624 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1627 unsigned long vram_sizes[10];
1628 unsigned long vram_paddrs[10];
1630 memset(&vram_sizes, 0, sizeof(vram_sizes));
1631 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1633 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1634 vram_sizes, vram_paddrs)) {
1635 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1637 memset(&vram_sizes, 0, sizeof(vram_sizes));
1638 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1641 if (fbdev->dev->platform_data) {
1642 struct omapfb_platform_data *opd;
1643 opd = fbdev->dev->platform_data;
1644 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1645 if (!vram_sizes[i]) {
1647 unsigned long paddr;
1649 size = opd->mem_desc.region[i].size;
1650 paddr = opd->mem_desc.region[i].paddr;
1652 vram_sizes[i] = size;
1653 vram_paddrs[i] = paddr;
1658 for (i = 0; i < fbdev->num_fbs; i++) {
1659 /* allocate memory automatically only for fb0, or if
1660 * excplicitly defined with vram or plat data option */
1661 if (i == 0 || vram_sizes[i] != 0) {
1662 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1663 vram_sizes[i], vram_paddrs[i]);
1670 for (i = 0; i < fbdev->num_fbs; i++) {
1671 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1672 struct omapfb2_mem_region *rg;
1675 DBG("region%d phys %08x virt %p size=%lu\n",
1685 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1687 struct omapfb_info *ofbi = FB2OFB(fbi);
1688 struct omapfb2_device *fbdev = ofbi->fbdev;
1689 struct omap_dss_device *display = fb2display(fbi);
1690 struct omapfb2_mem_region *rg = ofbi->region;
1691 unsigned long old_size = rg->size;
1692 unsigned long old_paddr = rg->paddr;
1693 int old_type = rg->type;
1696 if (type > OMAPFB_MEMTYPE_MAX)
1699 size = PAGE_ALIGN(size);
1701 if (old_size == size && old_type == type)
1704 if (display && display->driver->sync)
1705 display->driver->sync(display);
1707 omapfb_free_fbmem(fbi);
1714 r = omapfb_alloc_fbmem(fbi, size, 0);
1718 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1726 if (old_size == size)
1729 if (old_size == 0) {
1730 DBG("initializing fb %d\n", ofbi->id);
1731 r = omapfb_fb_init(fbdev, fbi);
1733 DBG("omapfb_fb_init failed\n");
1736 r = omapfb_apply_changes(fbi, 1);
1738 DBG("omapfb_apply_changes failed\n");
1742 struct fb_var_screeninfo new_var;
1743 memcpy(&new_var, &fbi->var, sizeof(new_var));
1744 r = check_fb_var(fbi, &new_var);
1747 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1749 r = setup_vrfb_rotation(fbi);
1756 omapfb_free_fbmem(fbi);
1761 /* initialize fb_info, var, fix to something sane based on the display */
1762 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1764 struct fb_var_screeninfo *var = &fbi->var;
1765 struct omap_dss_device *display = fb2display(fbi);
1766 struct omapfb_info *ofbi = FB2OFB(fbi);
1769 fbi->fbops = &omapfb_ops;
1770 fbi->flags = FBINFO_FLAG_DEFAULT;
1771 fbi->pseudo_palette = fbdev->pseudo_palette;
1773 if (ofbi->region->size == 0) {
1779 var->bits_per_pixel = 0;
1781 var->rotate = def_rotate;
1784 * Check if there is a default color format set in the board file,
1785 * and use this format instead the default deducted from the
1788 if (fbdev->dev->platform_data) {
1789 struct omapfb_platform_data *opd;
1792 opd = fbdev->dev->platform_data;
1793 if (opd->mem_desc.region[id].format_used) {
1794 enum omap_color_mode mode;
1795 enum omapfb_color_format format;
1797 format = opd->mem_desc.region[id].format;
1798 mode = fb_format_to_dss_mode(format);
1803 r = dss_mode_to_fb_mode(mode, var);
1811 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1813 display->driver->get_resolution(display, &w, &h);
1815 if (rotation == FB_ROTATE_CW ||
1816 rotation == FB_ROTATE_CCW) {
1824 var->xres_virtual = var->xres;
1825 var->yres_virtual = var->yres;
1827 if (!var->bits_per_pixel) {
1828 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1830 var->bits_per_pixel = 16;
1833 var->bits_per_pixel = 32;
1836 dev_err(fbdev->dev, "illegal display "
1842 /* if there's no display, let's just guess some basic values */
1845 var->xres_virtual = var->xres;
1846 var->yres_virtual = var->yres;
1847 if (!var->bits_per_pixel)
1848 var->bits_per_pixel = 16;
1851 r = check_fb_var(fbi, var);
1856 r = setup_vrfb_rotation(fbi);
1860 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1862 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1868 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1870 fb_dealloc_cmap(&fbi->cmap);
1874 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1878 DBG("free_resources\n");
1883 for (i = 0; i < fbdev->num_fbs; i++)
1884 unregister_framebuffer(fbdev->fbs[i]);
1886 /* free the reserved fbmem */
1887 omapfb_free_all_fbmem(fbdev);
1889 for (i = 0; i < fbdev->num_fbs; i++) {
1890 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1891 framebuffer_release(fbdev->fbs[i]);
1894 for (i = 0; i < fbdev->num_displays; i++) {
1895 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1896 fbdev->displays[i]->driver->disable(fbdev->displays[i]);
1898 omap_dss_put_device(fbdev->displays[i]);
1901 dev_set_drvdata(fbdev->dev, NULL);
1905 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1911 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1913 /* allocate fb_infos */
1914 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1915 struct fb_info *fbi;
1916 struct omapfb_info *ofbi;
1918 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1923 "unable to allocate memory for plane info\n");
1929 fbdev->fbs[i] = fbi;
1932 ofbi->fbdev = fbdev;
1935 ofbi->region = &fbdev->regions[i];
1936 ofbi->region->id = i;
1937 init_rwsem(&ofbi->region->lock);
1939 /* assign these early, so that fb alloc can use them */
1940 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1942 ofbi->mirror = def_mirror;
1947 DBG("fb_infos allocated\n");
1949 /* assign overlays for the fbs */
1950 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1951 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1953 ofbi->overlays[0] = fbdev->overlays[i];
1954 ofbi->num_overlays = 1;
1957 /* allocate fb memories */
1958 r = omapfb_allocate_all_fbs(fbdev);
1960 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1964 DBG("fbmems allocated\n");
1966 /* setup fb_infos */
1967 for (i = 0; i < fbdev->num_fbs; i++) {
1968 struct fb_info *fbi = fbdev->fbs[i];
1969 struct omapfb_info *ofbi = FB2OFB(fbi);
1971 omapfb_get_mem_region(ofbi->region);
1972 r = omapfb_fb_init(fbdev, fbi);
1973 omapfb_put_mem_region(ofbi->region);
1976 dev_err(fbdev->dev, "failed to setup fb_info\n");
1981 DBG("fb_infos initialized\n");
1983 for (i = 0; i < fbdev->num_fbs; i++) {
1984 r = register_framebuffer(fbdev->fbs[i]);
1987 "registering framebuffer %d failed\n", i);
1992 DBG("framebuffers registered\n");
1994 for (i = 0; i < fbdev->num_fbs; i++) {
1995 struct fb_info *fbi = fbdev->fbs[i];
1996 struct omapfb_info *ofbi = FB2OFB(fbi);
1998 omapfb_get_mem_region(ofbi->region);
1999 r = omapfb_apply_changes(fbi, 1);
2000 omapfb_put_mem_region(ofbi->region);
2003 dev_err(fbdev->dev, "failed to change mode\n");
2009 if (fbdev->num_fbs > 0) {
2010 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2012 if (ofbi->num_overlays > 0) {
2013 struct omap_overlay *ovl = ofbi->overlays[0];
2015 r = omapfb_overlay_enable(ovl, 1);
2019 "failed to enable overlay\n");
2025 DBG("create_framebuffers done\n");
2030 static int omapfb_mode_to_timings(const char *mode_str,
2031 struct omap_video_timings *timings, u8 *bpp)
2034 struct fb_var_screeninfo var;
2035 struct fb_ops fbops;
2038 #ifdef CONFIG_OMAP2_DSS_VENC
2039 if (strcmp(mode_str, "pal") == 0) {
2040 *timings = omap_dss_pal_timings;
2043 } else if (strcmp(mode_str, "ntsc") == 0) {
2044 *timings = omap_dss_ntsc_timings;
2050 /* this is quite a hack, but I wanted to use the modedb and for
2051 * that we need fb_info and var, so we create dummy ones */
2053 memset(&fbi, 0, sizeof(fbi));
2054 memset(&var, 0, sizeof(var));
2055 memset(&fbops, 0, sizeof(fbops));
2058 r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
2061 timings->pixel_clock = PICOS2KHZ(var.pixclock);
2062 timings->hbp = var.left_margin;
2063 timings->hfp = var.right_margin;
2064 timings->vbp = var.upper_margin;
2065 timings->vfp = var.lower_margin;
2066 timings->hsw = var.hsync_len;
2067 timings->vsw = var.vsync_len;
2068 timings->x_res = var.xres;
2069 timings->y_res = var.yres;
2071 switch (var.bits_per_pixel) {
2088 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2089 struct omap_dss_device *display, char *mode_str)
2093 struct omap_video_timings timings, temp_timings;
2095 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2099 fbdev->bpp_overrides[fbdev->num_bpp_overrides].dssdev = display;
2100 fbdev->bpp_overrides[fbdev->num_bpp_overrides].bpp = bpp;
2101 ++fbdev->num_bpp_overrides;
2103 if (display->driver->check_timings) {
2104 r = display->driver->check_timings(display, &timings);
2108 /* If check_timings is not present compare xres and yres */
2109 if (display->driver->get_timings) {
2110 display->driver->get_timings(display, &temp_timings);
2112 if (temp_timings.x_res != timings.x_res ||
2113 temp_timings.y_res != timings.y_res)
2118 if (display->driver->set_timings)
2119 display->driver->set_timings(display, &timings);
2124 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2125 struct omap_dss_device *dssdev)
2129 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2131 for (i = 0; i < fbdev->num_bpp_overrides; ++i) {
2132 if (dssdev == fbdev->bpp_overrides[i].dssdev)
2133 return fbdev->bpp_overrides[i].bpp;
2136 return dssdev->driver->get_recommended_bpp(dssdev);
2139 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2141 char *str, *options, *this_opt;
2144 str = kstrdup(def_mode, GFP_KERNEL);
2149 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2150 char *p, *display_str, *mode_str;
2151 struct omap_dss_device *display;
2154 p = strchr(this_opt, ':');
2161 display_str = this_opt;
2165 for (i = 0; i < fbdev->num_displays; ++i) {
2166 if (strcmp(fbdev->displays[i]->name,
2167 display_str) == 0) {
2168 display = fbdev->displays[i];
2178 r = omapfb_set_def_mode(fbdev, display, mode_str);
2188 static int omapfb_probe(struct platform_device *pdev)
2190 struct omapfb2_device *fbdev = NULL;
2193 struct omap_overlay *ovl;
2194 struct omap_dss_device *def_display;
2195 struct omap_dss_device *dssdev;
2197 DBG("omapfb_probe\n");
2199 if (pdev->num_resources != 0) {
2200 dev_err(&pdev->dev, "probed for an unknown device\n");
2205 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2206 if (fbdev == NULL) {
2211 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2212 * available for OMAP2 and OMAP3
2214 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2216 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2217 "ignoring the module parameter vrfb=y\n");
2221 mutex_init(&fbdev->mtx);
2223 fbdev->dev = &pdev->dev;
2224 platform_set_drvdata(pdev, fbdev);
2227 fbdev->num_displays = 0;
2229 for_each_dss_dev(dssdev) {
2230 omap_dss_get_device(dssdev);
2232 if (!dssdev->driver) {
2233 dev_err(&pdev->dev, "no driver for display\n");
2237 fbdev->displays[fbdev->num_displays++] = dssdev;
2243 if (fbdev->num_displays == 0) {
2244 dev_err(&pdev->dev, "no displays\n");
2249 fbdev->num_overlays = omap_dss_get_num_overlays();
2250 for (i = 0; i < fbdev->num_overlays; i++)
2251 fbdev->overlays[i] = omap_dss_get_overlay(i);
2253 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2254 for (i = 0; i < fbdev->num_managers; i++)
2255 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2257 if (def_mode && strlen(def_mode) > 0) {
2258 if (omapfb_parse_def_modes(fbdev))
2259 dev_warn(&pdev->dev, "cannot parse default modes\n");
2262 r = omapfb_create_framebuffers(fbdev);
2266 for (i = 0; i < fbdev->num_managers; i++) {
2267 struct omap_overlay_manager *mgr;
2268 mgr = fbdev->managers[i];
2269 r = mgr->apply(mgr);
2271 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2274 DBG("mgr->apply'ed\n");
2276 /* gfx overlay should be the default one. find a display
2277 * connected to that, and use it as default display */
2278 ovl = omap_dss_get_overlay(0);
2279 if (ovl->manager && ovl->manager->device) {
2280 def_display = ovl->manager->device;
2282 dev_warn(&pdev->dev, "cannot find default display\n");
2287 struct omap_dss_driver *dssdrv = def_display->driver;
2289 r = def_display->driver->enable(def_display);
2291 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2296 if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2298 if (dssdrv->enable_te)
2299 dssdrv->enable_te(def_display, 1);
2300 if (dssdrv->set_update_mode)
2301 dssdrv->set_update_mode(def_display,
2302 OMAP_DSS_UPDATE_MANUAL);
2304 dssdrv->get_resolution(def_display, &w, &h);
2305 def_display->driver->update(def_display, 0, 0, w, h);
2307 if (dssdrv->set_update_mode)
2308 dssdrv->set_update_mode(def_display,
2309 OMAP_DSS_UPDATE_AUTO);
2313 DBG("create sysfs for fbs\n");
2314 r = omapfb_create_sysfs(fbdev);
2316 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2323 omapfb_free_resources(fbdev);
2325 dev_err(&pdev->dev, "failed to setup omapfb\n");
2329 static int omapfb_remove(struct platform_device *pdev)
2331 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2333 /* FIXME: wait till completion of pending events */
2335 omapfb_remove_sysfs(fbdev);
2337 omapfb_free_resources(fbdev);
2342 static struct platform_driver omapfb_driver = {
2343 .probe = omapfb_probe,
2344 .remove = omapfb_remove,
2347 .owner = THIS_MODULE,
2351 static int __init omapfb_init(void)
2353 DBG("omapfb_init\n");
2355 if (platform_driver_register(&omapfb_driver)) {
2356 printk(KERN_ERR "failed to register omapfb driver\n");
2363 static void __exit omapfb_exit(void)
2365 DBG("omapfb_exit\n");
2366 platform_driver_unregister(&omapfb_driver);
2369 module_param_named(mode, def_mode, charp, 0);
2370 module_param_named(vram, def_vram, charp, 0);
2371 module_param_named(rotate, def_rotate, int, 0);
2372 module_param_named(vrfb, def_vrfb, bool, 0);
2373 module_param_named(mirror, def_mirror, bool, 0);
2375 /* late_initcall to let panel/ctrl drivers loaded first.
2376 * I guess better option would be a more dynamic approach,
2377 * so that omapfb reacts to new panels when they are loaded */
2378 late_initcall(omapfb_init);
2379 /*module_init(omapfb_init);*/
2380 module_exit(omapfb_exit);
2382 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2383 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2384 MODULE_LICENSE("GPL v2");