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 <video/omapfb_dss.h>
34 #include <video/omapvrfb.h>
38 #define MODULE_NAME "omapfb"
40 #define OMAPFB_PLANE_XRES_MIN 8
41 #define OMAPFB_PLANE_YRES_MIN 8
43 static char *def_mode;
44 static char *def_vram;
46 static int def_rotate;
47 static bool def_mirror;
48 static bool auto_update;
49 static unsigned int auto_update_freq;
50 module_param(auto_update, bool, 0);
51 module_param(auto_update_freq, uint, 0644);
55 module_param_named(debug, omapfb_debug, bool, 0644);
56 static bool omapfb_test_pattern;
57 module_param_named(test, omapfb_test_pattern, bool, 0644);
60 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
61 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
62 struct omap_dss_device *dssdev);
65 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
67 struct fb_var_screeninfo *var = &fbi->var;
68 struct fb_fix_screeninfo *fix = &fbi->fix;
69 void __iomem *addr = fbi->screen_base;
70 const unsigned bytespp = var->bits_per_pixel >> 3;
71 const unsigned line_len = fix->line_length / bytespp;
73 int r = (color >> 16) & 0xff;
74 int g = (color >> 8) & 0xff;
75 int b = (color >> 0) & 0xff;
77 if (var->bits_per_pixel == 16) {
78 u16 __iomem *p = (u16 __iomem *)addr;
79 p += y * line_len + x;
85 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
86 } else if (var->bits_per_pixel == 24) {
87 u8 __iomem *p = (u8 __iomem *)addr;
88 p += (y * line_len + x) * 3;
90 __raw_writeb(b, p + 0);
91 __raw_writeb(g, p + 1);
92 __raw_writeb(r, p + 2);
93 } else if (var->bits_per_pixel == 32) {
94 u32 __iomem *p = (u32 __iomem *)addr;
95 p += y * line_len + x;
96 __raw_writel(color, p);
100 static void fill_fb(struct fb_info *fbi)
102 struct fb_var_screeninfo *var = &fbi->var;
103 const short w = var->xres_virtual;
104 const short h = var->yres_virtual;
105 void __iomem *addr = fbi->screen_base;
111 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
113 for (y = 0; y < h; y++) {
114 for (x = 0; x < w; x++) {
115 if (x < 20 && y < 20)
116 draw_pixel(fbi, x, y, 0xffffff);
117 else if (x < 20 && (y > 20 && y < h - 20))
118 draw_pixel(fbi, x, y, 0xff);
119 else if (y < 20 && (x > 20 && x < w - 20))
120 draw_pixel(fbi, x, y, 0xff00);
121 else if (x > w - 20 && (y > 20 && y < h - 20))
122 draw_pixel(fbi, x, y, 0xff0000);
123 else if (y > h - 20 && (x > 20 && x < w - 20))
124 draw_pixel(fbi, x, y, 0xffff00);
125 else if (x == 20 || x == w - 20 ||
126 y == 20 || y == h - 20)
127 draw_pixel(fbi, x, y, 0xffffff);
128 else if (x == y || w - x == h - y)
129 draw_pixel(fbi, x, y, 0xff00ff);
130 else if (w - x == y || x == h - y)
131 draw_pixel(fbi, x, y, 0x00ffff);
132 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
134 unsigned r = 0, g = 0, b = 0;
136 if (var->bits_per_pixel == 16) {
138 b = (y % 32) * 256 / 32;
140 g = (y % 64) * 256 / 64;
142 r = (y % 32) * 256 / 32;
151 c = (r << 16) | (g << 8) | (b << 0);
152 draw_pixel(fbi, x, y, c);
154 draw_pixel(fbi, x, y, 0);
161 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
163 const struct vrfb *vrfb = &ofbi->region->vrfb;
171 offset = vrfb->yoffset;
174 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
177 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
184 offset *= vrfb->bytespp;
189 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
191 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
192 return ofbi->region->vrfb.paddr[rot]
193 + omapfb_get_vrfb_offset(ofbi, rot);
195 return ofbi->region->paddr;
199 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
201 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
202 return ofbi->region->vrfb.paddr[0];
204 return ofbi->region->paddr;
207 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
209 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
210 return ofbi->region->vrfb.vaddr[0];
212 return ofbi->region->vaddr;
215 static struct omapfb_colormode omapfb_colormodes[] = {
217 .dssmode = OMAP_DSS_COLOR_UYVY,
218 .bits_per_pixel = 16,
219 .nonstd = OMAPFB_COLOR_YUV422,
221 .dssmode = OMAP_DSS_COLOR_YUV2,
222 .bits_per_pixel = 16,
223 .nonstd = OMAPFB_COLOR_YUY422,
225 .dssmode = OMAP_DSS_COLOR_ARGB16,
226 .bits_per_pixel = 16,
227 .red = { .length = 4, .offset = 8, .msb_right = 0 },
228 .green = { .length = 4, .offset = 4, .msb_right = 0 },
229 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
230 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
232 .dssmode = OMAP_DSS_COLOR_RGB16,
233 .bits_per_pixel = 16,
234 .red = { .length = 5, .offset = 11, .msb_right = 0 },
235 .green = { .length = 6, .offset = 5, .msb_right = 0 },
236 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
237 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
239 .dssmode = OMAP_DSS_COLOR_RGB24P,
240 .bits_per_pixel = 24,
241 .red = { .length = 8, .offset = 16, .msb_right = 0 },
242 .green = { .length = 8, .offset = 8, .msb_right = 0 },
243 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
244 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
246 .dssmode = OMAP_DSS_COLOR_RGB24U,
247 .bits_per_pixel = 32,
248 .red = { .length = 8, .offset = 16, .msb_right = 0 },
249 .green = { .length = 8, .offset = 8, .msb_right = 0 },
250 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
251 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
253 .dssmode = OMAP_DSS_COLOR_ARGB32,
254 .bits_per_pixel = 32,
255 .red = { .length = 8, .offset = 16, .msb_right = 0 },
256 .green = { .length = 8, .offset = 8, .msb_right = 0 },
257 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
258 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
260 .dssmode = OMAP_DSS_COLOR_RGBA32,
261 .bits_per_pixel = 32,
262 .red = { .length = 8, .offset = 24, .msb_right = 0 },
263 .green = { .length = 8, .offset = 16, .msb_right = 0 },
264 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
265 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
267 .dssmode = OMAP_DSS_COLOR_RGBX32,
268 .bits_per_pixel = 32,
269 .red = { .length = 8, .offset = 24, .msb_right = 0 },
270 .green = { .length = 8, .offset = 16, .msb_right = 0 },
271 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
272 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
276 static bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
278 return f1->length == f2->length &&
279 f1->offset == f2->offset &&
280 f1->msb_right == f2->msb_right;
283 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
284 struct omapfb_colormode *color)
286 if (var->bits_per_pixel == 0 ||
287 var->red.length == 0 ||
288 var->blue.length == 0 ||
289 var->green.length == 0)
292 return var->bits_per_pixel == color->bits_per_pixel &&
293 cmp_component(&var->red, &color->red) &&
294 cmp_component(&var->green, &color->green) &&
295 cmp_component(&var->blue, &color->blue) &&
296 cmp_component(&var->transp, &color->transp);
299 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
300 struct omapfb_colormode *color)
302 var->bits_per_pixel = color->bits_per_pixel;
303 var->nonstd = color->nonstd;
304 var->red = color->red;
305 var->green = color->green;
306 var->blue = color->blue;
307 var->transp = color->transp;
310 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
311 enum omap_color_mode *mode)
313 enum omap_color_mode dssmode;
316 /* first match with nonstd field */
318 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
319 struct omapfb_colormode *m = &omapfb_colormodes[i];
320 if (var->nonstd == m->nonstd) {
321 assign_colormode_to_var(var, m);
330 /* then try exact match of bpp and colors */
331 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
332 struct omapfb_colormode *m = &omapfb_colormodes[i];
333 if (cmp_var_to_colormode(var, m)) {
334 assign_colormode_to_var(var, m);
340 /* match with bpp if user has not filled color fields
342 switch (var->bits_per_pixel) {
344 dssmode = OMAP_DSS_COLOR_CLUT1;
347 dssmode = OMAP_DSS_COLOR_CLUT2;
350 dssmode = OMAP_DSS_COLOR_CLUT4;
353 dssmode = OMAP_DSS_COLOR_CLUT8;
356 dssmode = OMAP_DSS_COLOR_RGB12U;
359 dssmode = OMAP_DSS_COLOR_RGB16;
362 dssmode = OMAP_DSS_COLOR_RGB24P;
365 dssmode = OMAP_DSS_COLOR_RGB24U;
371 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
372 struct omapfb_colormode *m = &omapfb_colormodes[i];
373 if (dssmode == m->dssmode) {
374 assign_colormode_to_var(var, m);
383 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
385 int xres_min = OMAPFB_PLANE_XRES_MIN;
387 int yres_min = OMAPFB_PLANE_YRES_MIN;
390 /* XXX: some applications seem to set virtual res to 0. */
391 if (var->xres_virtual == 0)
392 var->xres_virtual = var->xres;
394 if (var->yres_virtual == 0)
395 var->yres_virtual = var->yres;
397 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
400 if (var->xres < xres_min)
401 var->xres = xres_min;
402 if (var->yres < yres_min)
403 var->yres = yres_min;
404 if (var->xres > xres_max)
405 var->xres = xres_max;
406 if (var->yres > yres_max)
407 var->yres = yres_max;
409 if (var->xres > var->xres_virtual)
410 var->xres = var->xres_virtual;
411 if (var->yres > var->yres_virtual)
412 var->yres = var->yres_virtual;
417 static void shrink_height(unsigned long max_frame_size,
418 struct fb_var_screeninfo *var)
420 DBG("can't fit FB into memory, reducing y\n");
421 var->yres_virtual = max_frame_size /
422 (var->xres_virtual * var->bits_per_pixel >> 3);
424 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
425 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
427 if (var->yres > var->yres_virtual)
428 var->yres = var->yres_virtual;
431 static void shrink_width(unsigned long max_frame_size,
432 struct fb_var_screeninfo *var)
434 DBG("can't fit FB into memory, reducing x\n");
435 var->xres_virtual = max_frame_size / var->yres_virtual /
436 (var->bits_per_pixel >> 3);
438 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
439 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
441 if (var->xres > var->xres_virtual)
442 var->xres = var->xres_virtual;
445 static int check_vrfb_fb_size(unsigned long region_size,
446 const struct fb_var_screeninfo *var)
448 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
449 var->yres_virtual, var->bits_per_pixel >> 3);
451 return min_phys_size > region_size ? -EINVAL : 0;
454 static int check_fb_size(const struct omapfb_info *ofbi,
455 struct fb_var_screeninfo *var)
457 unsigned long max_frame_size = ofbi->region->size;
458 int bytespp = var->bits_per_pixel >> 3;
459 unsigned long line_size = var->xres_virtual * bytespp;
461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
462 /* One needs to check for both VRFB and OMAPFB limitations. */
463 if (check_vrfb_fb_size(max_frame_size, var))
464 shrink_height(omap_vrfb_max_height(
465 max_frame_size, var->xres_virtual, bytespp) *
468 if (check_vrfb_fb_size(max_frame_size, var)) {
469 DBG("cannot fit FB to memory\n");
476 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
478 if (line_size * var->yres_virtual > max_frame_size)
479 shrink_height(max_frame_size, var);
481 if (line_size * var->yres_virtual > max_frame_size) {
482 shrink_width(max_frame_size, var);
483 line_size = var->xres_virtual * bytespp;
486 if (line_size * var->yres_virtual > max_frame_size) {
487 DBG("cannot fit FB to memory\n");
495 * Consider if VRFB assisted rotation is in use and if the virtual space for
496 * the zero degree view needs to be mapped. The need for mapping also acts as
497 * the trigger for setting up the hardware on the context in question. This
498 * ensures that one does not attempt to access the virtual view before the
499 * hardware is serving the address translations.
501 static int setup_vrfb_rotation(struct fb_info *fbi)
503 struct omapfb_info *ofbi = FB2OFB(fbi);
504 struct omapfb2_mem_region *rg = ofbi->region;
505 struct vrfb *vrfb = &rg->vrfb;
506 struct fb_var_screeninfo *var = &fbi->var;
507 struct fb_fix_screeninfo *fix = &fbi->fix;
510 enum omap_color_mode mode;
514 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
517 DBG("setup_vrfb_rotation\n");
519 r = fb_mode_to_dss_mode(var, &mode);
523 bytespp = var->bits_per_pixel >> 3;
525 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
527 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
528 * is enabled/disabled, or if bytes per pixel changes */
530 /* XXX we shouldn't allow this when framebuffer is mmapped */
534 if (yuv_mode != vrfb->yuv_mode)
536 else if (bytespp != vrfb->bytespp)
538 else if (vrfb->xres != var->xres_virtual ||
539 vrfb->yres != var->yres_virtual)
542 if (vrfb->vaddr[0] && reconf) {
543 fbi->screen_base = NULL;
546 iounmap(vrfb->vaddr[0]);
547 vrfb->vaddr[0] = NULL;
548 DBG("setup_vrfb_rotation: reset fb\n");
554 omap_vrfb_setup(&rg->vrfb, rg->paddr,
559 /* Now one can ioremap the 0 angle view */
560 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
564 /* used by open/write in fbmem.c */
565 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
567 fix->smem_start = ofbi->region->vrfb.paddr[0];
569 switch (var->nonstd) {
570 case OMAPFB_COLOR_YUV422:
571 case OMAPFB_COLOR_YUY422:
573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
577 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
581 fix->smem_len = var->yres_virtual * fix->line_length;
586 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
587 struct fb_var_screeninfo *var)
591 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
592 struct omapfb_colormode *mode = &omapfb_colormodes[i];
593 if (dssmode == mode->dssmode) {
594 assign_colormode_to_var(var, mode);
601 void set_fb_fix(struct fb_info *fbi)
603 struct fb_fix_screeninfo *fix = &fbi->fix;
604 struct fb_var_screeninfo *var = &fbi->var;
605 struct omapfb_info *ofbi = FB2OFB(fbi);
606 struct omapfb2_mem_region *rg = ofbi->region;
610 /* used by open/write in fbmem.c */
611 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
613 /* used by mmap in fbmem.c */
614 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
615 switch (var->nonstd) {
616 case OMAPFB_COLOR_YUV422:
617 case OMAPFB_COLOR_YUY422:
619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
623 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
627 fix->smem_len = var->yres_virtual * fix->line_length;
630 (var->xres_virtual * var->bits_per_pixel) >> 3;
631 fix->smem_len = rg->size;
634 fix->smem_start = omapfb_get_region_paddr(ofbi);
636 fix->type = FB_TYPE_PACKED_PIXELS;
639 fix->visual = FB_VISUAL_PSEUDOCOLOR;
641 switch (var->bits_per_pixel) {
646 fix->visual = FB_VISUAL_TRUECOLOR;
647 /* 12bpp is stored in 16 bits */
653 fix->visual = FB_VISUAL_PSEUDOCOLOR;
658 fix->accel = FB_ACCEL_NONE;
664 /* check new var and possibly modify it to be ok */
665 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
667 struct omapfb_info *ofbi = FB2OFB(fbi);
668 struct omap_dss_device *display = fb2display(fbi);
669 enum omap_color_mode mode = 0;
673 DBG("check_fb_var %d\n", ofbi->id);
675 WARN_ON(!atomic_read(&ofbi->region->lock_count));
677 r = fb_mode_to_dss_mode(var, &mode);
679 DBG("cannot convert var to omap dss mode\n");
683 for (i = 0; i < ofbi->num_overlays; ++i) {
684 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
685 DBG("invalid mode\n");
693 if (check_fb_res_bounds(var))
696 /* When no memory is allocated ignore the size check */
697 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
700 if (var->xres + var->xoffset > var->xres_virtual)
701 var->xoffset = var->xres_virtual - var->xres;
702 if (var->yres + var->yoffset > var->yres_virtual)
703 var->yoffset = var->yres_virtual - var->yres;
705 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
706 var->xres, var->yres,
707 var->xres_virtual, var->yres_virtual);
709 if (display && display->driver->get_dimensions) {
711 display->driver->get_dimensions(display, &w, &h);
712 var->width = DIV_ROUND_CLOSEST(w, 1000);
713 var->height = DIV_ROUND_CLOSEST(h, 1000);
721 if (display && display->driver->get_timings) {
722 struct omap_video_timings timings;
723 display->driver->get_timings(display, &timings);
725 /* pixclock in ps, the rest in pixclock */
726 var->pixclock = timings.pixelclock != 0 ?
727 KHZ2PICOS(timings.pixelclock / 1000) :
729 var->left_margin = timings.hbp;
730 var->right_margin = timings.hfp;
731 var->upper_margin = timings.vbp;
732 var->lower_margin = timings.vfp;
733 var->hsync_len = timings.hsw;
734 var->vsync_len = timings.vsw;
735 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
736 FB_SYNC_HOR_HIGH_ACT : 0;
737 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
738 FB_SYNC_VERT_HIGH_ACT : 0;
739 var->vmode = timings.interlace ?
740 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
743 var->left_margin = 0;
744 var->right_margin = 0;
745 var->upper_margin = 0;
746 var->lower_margin = 0;
750 var->vmode = FB_VMODE_NONINTERLACED;
757 * ---------------------------------------------------------------------------
758 * fbdev framework callbacks
759 * ---------------------------------------------------------------------------
761 static int omapfb_open(struct fb_info *fbi, int user)
766 static int omapfb_release(struct fb_info *fbi, int user)
771 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
772 const struct fb_fix_screeninfo *fix, int rotation)
776 offset = var->yoffset * fix->line_length +
777 var->xoffset * (var->bits_per_pixel >> 3);
782 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
783 const struct fb_fix_screeninfo *fix, int rotation)
787 if (rotation == FB_ROTATE_UD)
788 offset = (var->yres_virtual - var->yres) *
790 else if (rotation == FB_ROTATE_CW)
791 offset = (var->yres_virtual - var->yres) *
792 (var->bits_per_pixel >> 3);
796 if (rotation == FB_ROTATE_UR)
797 offset += var->yoffset * fix->line_length +
798 var->xoffset * (var->bits_per_pixel >> 3);
799 else if (rotation == FB_ROTATE_UD)
800 offset -= var->yoffset * fix->line_length +
801 var->xoffset * (var->bits_per_pixel >> 3);
802 else if (rotation == FB_ROTATE_CW)
803 offset -= var->xoffset * fix->line_length +
804 var->yoffset * (var->bits_per_pixel >> 3);
805 else if (rotation == FB_ROTATE_CCW)
806 offset += var->xoffset * fix->line_length +
807 var->yoffset * (var->bits_per_pixel >> 3);
812 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
813 const struct fb_var_screeninfo *var,
814 const struct fb_fix_screeninfo *fix,
815 int rotation, u32 *paddr)
820 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
821 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
823 data_start_p = omapfb_get_region_paddr(ofbi);
825 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
826 offset = calc_rotation_offset_vrfb(var, fix, rotation);
828 offset = calc_rotation_offset_dma(var, fix, rotation);
830 data_start_p += offset;
833 DBG("offset %d, %d = %d\n",
834 var->xoffset, var->yoffset, offset);
836 DBG("paddr %x\n", data_start_p);
838 *paddr = data_start_p;
841 /* setup overlay according to the fb */
842 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
843 u16 posx, u16 posy, u16 outw, u16 outh)
846 struct omapfb_info *ofbi = FB2OFB(fbi);
847 struct fb_var_screeninfo *var = &fbi->var;
848 struct fb_fix_screeninfo *fix = &fbi->fix;
849 enum omap_color_mode mode = 0;
850 u32 data_start_p = 0;
851 struct omap_overlay_info info;
855 int rotation = var->rotate;
858 WARN_ON(!atomic_read(&ofbi->region->lock_count));
860 for (i = 0; i < ofbi->num_overlays; i++) {
861 if (ovl != ofbi->overlays[i])
864 rotation = (rotation + ofbi->rotation[i]) % 4;
868 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
869 posx, posy, outw, outh);
871 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
879 if (ofbi->region->size)
880 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
882 r = fb_mode_to_dss_mode(var, &mode);
884 DBG("fb_mode_to_dss_mode failed");
888 switch (var->nonstd) {
889 case OMAPFB_COLOR_YUV422:
890 case OMAPFB_COLOR_YUY422:
891 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
892 screen_width = fix->line_length
893 / (var->bits_per_pixel >> 2);
897 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
901 ovl->get_overlay_info(ovl, &info);
903 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
906 mirror = ofbi->mirror;
908 info.paddr = data_start_p;
909 info.screen_width = screen_width;
912 info.color_mode = mode;
913 info.rotation_type = ofbi->rotation_type;
914 info.rotation = rotation;
915 info.mirror = mirror;
919 info.out_width = outw;
920 info.out_height = outh;
922 r = ovl->set_overlay_info(ovl, &info);
924 DBG("ovl->setup_overlay_info failed\n");
931 DBG("setup_overlay failed\n");
935 /* apply var to the overlay */
936 int omapfb_apply_changes(struct fb_info *fbi, int init)
939 struct omapfb_info *ofbi = FB2OFB(fbi);
940 struct fb_var_screeninfo *var = &fbi->var;
941 struct omap_overlay *ovl;
947 if (omapfb_test_pattern)
951 WARN_ON(!atomic_read(&ofbi->region->lock_count));
953 for (i = 0; i < ofbi->num_overlays; i++) {
954 ovl = ofbi->overlays[i];
956 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
958 if (ofbi->region->size == 0) {
959 /* the fb is not available. disable the overlay */
960 omapfb_overlay_enable(ovl, 0);
961 if (!init && ovl->manager)
962 ovl->manager->apply(ovl->manager);
966 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
967 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
968 if (rotation == FB_ROTATE_CW ||
969 rotation == FB_ROTATE_CCW) {
977 struct omap_overlay_info info;
978 ovl->get_overlay_info(ovl, &info);
979 outw = info.out_width;
980 outh = info.out_height;
987 struct omap_overlay_info info;
988 ovl->get_overlay_info(ovl, &info);
993 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
997 if (!init && ovl->manager)
998 ovl->manager->apply(ovl->manager);
1002 DBG("apply_changes failed\n");
1006 /* checks var and eventually tweaks it to something supported,
1007 * DO NOT MODIFY PAR */
1008 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1010 struct omapfb_info *ofbi = FB2OFB(fbi);
1013 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1015 omapfb_get_mem_region(ofbi->region);
1017 r = check_fb_var(fbi, var);
1019 omapfb_put_mem_region(ofbi->region);
1024 /* set the video mode according to info->var */
1025 static int omapfb_set_par(struct fb_info *fbi)
1027 struct omapfb_info *ofbi = FB2OFB(fbi);
1030 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1032 omapfb_get_mem_region(ofbi->region);
1036 r = setup_vrfb_rotation(fbi);
1040 r = omapfb_apply_changes(fbi, 0);
1043 omapfb_put_mem_region(ofbi->region);
1048 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1049 struct fb_info *fbi)
1051 struct omapfb_info *ofbi = FB2OFB(fbi);
1052 struct fb_var_screeninfo new_var;
1055 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1057 if (var->xoffset == fbi->var.xoffset &&
1058 var->yoffset == fbi->var.yoffset)
1062 new_var.xoffset = var->xoffset;
1063 new_var.yoffset = var->yoffset;
1067 omapfb_get_mem_region(ofbi->region);
1069 r = omapfb_apply_changes(fbi, 0);
1071 omapfb_put_mem_region(ofbi->region);
1076 static void mmap_user_open(struct vm_area_struct *vma)
1078 struct omapfb2_mem_region *rg = vma->vm_private_data;
1080 omapfb_get_mem_region(rg);
1081 atomic_inc(&rg->map_count);
1082 omapfb_put_mem_region(rg);
1085 static void mmap_user_close(struct vm_area_struct *vma)
1087 struct omapfb2_mem_region *rg = vma->vm_private_data;
1089 omapfb_get_mem_region(rg);
1090 atomic_dec(&rg->map_count);
1091 omapfb_put_mem_region(rg);
1094 static const struct vm_operations_struct mmap_user_ops = {
1095 .open = mmap_user_open,
1096 .close = mmap_user_close,
1099 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1101 struct omapfb_info *ofbi = FB2OFB(fbi);
1102 struct fb_fix_screeninfo *fix = &fbi->fix;
1103 struct omapfb2_mem_region *rg;
1104 unsigned long start;
1108 rg = omapfb_get_mem_region(ofbi->region);
1110 start = omapfb_get_region_paddr(ofbi);
1111 len = fix->smem_len;
1113 DBG("user mmap region start %lx, len %d, off %lx\n", start, len,
1114 vma->vm_pgoff << PAGE_SHIFT);
1116 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1117 vma->vm_ops = &mmap_user_ops;
1118 vma->vm_private_data = rg;
1120 r = vm_iomap_memory(vma, start, len);
1124 /* vm_ops.open won't be called for mmap itself. */
1125 atomic_inc(&rg->map_count);
1127 omapfb_put_mem_region(rg);
1132 omapfb_put_mem_region(ofbi->region);
1137 /* Store a single color palette entry into a pseudo palette or the hardware
1138 * palette if one is available. For now we support only 16bpp and thus store
1139 * the entry only to the pseudo palette.
1141 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1142 u_int blue, u_int transp, int update_hw_pal)
1144 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1145 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1146 struct fb_var_screeninfo *var = &fbi->var;
1149 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1151 /*switch (plane->color_mode) {*/
1153 case OMAPFB_COLOR_YUV422:
1154 case OMAPFB_COLOR_YUV420:
1155 case OMAPFB_COLOR_YUY422:
1158 case OMAPFB_COLOR_CLUT_8BPP:
1159 case OMAPFB_COLOR_CLUT_4BPP:
1160 case OMAPFB_COLOR_CLUT_2BPP:
1161 case OMAPFB_COLOR_CLUT_1BPP:
1163 if (fbdev->ctrl->setcolreg)
1164 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1165 transp, update_hw_pal);
1170 case OMAPFB_COLOR_RGB565:
1171 case OMAPFB_COLOR_RGB444:
1172 case OMAPFB_COLOR_RGB24P:
1173 case OMAPFB_COLOR_RGB24U:
1179 pal = ((red >> (16 - var->red.length)) <<
1181 ((green >> (16 - var->green.length)) <<
1182 var->green.offset) |
1183 (blue >> (16 - var->blue.length));
1184 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1193 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1194 u_int transp, struct fb_info *info)
1198 return _setcolreg(info, regno, red, green, blue, transp, 1);
1201 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1203 int count, index, r;
1204 u16 *red, *green, *blue, *transp;
1210 green = cmap->green;
1212 transp = cmap->transp;
1213 index = cmap->start;
1215 for (count = 0; count < cmap->len; count++) {
1218 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1219 count == cmap->len - 1);
1227 static int omapfb_blank(int blank, struct fb_info *fbi)
1229 struct omapfb_info *ofbi = FB2OFB(fbi);
1230 struct omapfb2_device *fbdev = ofbi->fbdev;
1231 struct omap_dss_device *display = fb2display(fbi);
1232 struct omapfb_display_data *d;
1240 d = get_display_data(fbdev, display);
1243 case FB_BLANK_UNBLANK:
1244 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1247 r = display->driver->enable(display);
1249 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1250 d->update_mode == OMAPFB_AUTO_UPDATE &&
1251 !d->auto_update_work_enabled)
1252 omapfb_start_auto_update(fbdev, display);
1256 case FB_BLANK_NORMAL:
1257 /* FB_BLANK_NORMAL could be implemented.
1258 * Needs DSS additions. */
1259 case FB_BLANK_VSYNC_SUSPEND:
1260 case FB_BLANK_HSYNC_SUSPEND:
1261 case FB_BLANK_POWERDOWN:
1262 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1265 if (d->auto_update_work_enabled)
1266 omapfb_stop_auto_update(fbdev, display);
1268 display->driver->disable(display);
1277 omapfb_unlock(fbdev);
1283 /* XXX fb_read and fb_write are needed for VRFB */
1284 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1285 size_t count, loff_t *ppos)
1287 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1288 /* XXX needed for VRFB */
1293 static struct fb_ops omapfb_ops = {
1294 .owner = THIS_MODULE,
1295 .fb_open = omapfb_open,
1296 .fb_release = omapfb_release,
1297 .fb_fillrect = cfb_fillrect,
1298 .fb_copyarea = cfb_copyarea,
1299 .fb_imageblit = cfb_imageblit,
1300 .fb_blank = omapfb_blank,
1301 .fb_ioctl = omapfb_ioctl,
1302 .fb_check_var = omapfb_check_var,
1303 .fb_set_par = omapfb_set_par,
1304 .fb_pan_display = omapfb_pan_display,
1305 .fb_mmap = omapfb_mmap,
1306 .fb_setcolreg = omapfb_setcolreg,
1307 .fb_setcmap = omapfb_setcmap,
1308 /*.fb_write = omapfb_write,*/
1311 static void omapfb_free_fbmem(struct fb_info *fbi)
1313 struct omapfb_info *ofbi = FB2OFB(fbi);
1314 struct omapfb2_device *fbdev = ofbi->fbdev;
1315 struct omapfb2_mem_region *rg;
1319 if (rg->token == NULL)
1322 WARN_ON(atomic_read(&rg->map_count));
1324 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1325 /* unmap the 0 angle rotation */
1326 if (rg->vrfb.vaddr[0]) {
1327 iounmap(rg->vrfb.vaddr[0]);
1328 rg->vrfb.vaddr[0] = NULL;
1331 omap_vrfb_release_ctx(&rg->vrfb);
1334 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1344 static void clear_fb_info(struct fb_info *fbi)
1346 memset(&fbi->var, 0, sizeof(fbi->var));
1347 memset(&fbi->fix, 0, sizeof(fbi->fix));
1348 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1351 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1355 DBG("free all fbmem\n");
1357 for (i = 0; i < fbdev->num_fbs; i++) {
1358 struct fb_info *fbi = fbdev->fbs[i];
1359 omapfb_free_fbmem(fbi);
1366 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1367 unsigned long paddr)
1369 struct omapfb_info *ofbi = FB2OFB(fbi);
1370 struct omapfb2_device *fbdev = ofbi->fbdev;
1371 struct omapfb2_mem_region *rg;
1373 unsigned long attrs;
1374 dma_addr_t dma_handle;
1381 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1387 size = PAGE_ALIGN(size);
1389 attrs = DMA_ATTR_WRITE_COMBINE;
1391 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1392 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
1394 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1396 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1399 if (token == NULL) {
1400 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1404 DBG("allocated VRAM paddr %lx, vaddr %p\n",
1405 (unsigned long)dma_handle, token);
1407 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1408 r = omap_vrfb_request_ctx(&rg->vrfb);
1410 dma_free_attrs(fbdev->dev, size, token, dma_handle,
1412 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1419 rg->dma_handle = dma_handle;
1421 rg->paddr = (unsigned long)dma_handle;
1422 rg->vaddr = (void __iomem *)token;
1429 /* allocate fbmem using display resolution as reference */
1430 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1431 unsigned long paddr)
1433 struct omapfb_info *ofbi = FB2OFB(fbi);
1434 struct omapfb2_device *fbdev = ofbi->fbdev;
1435 struct omap_dss_device *display;
1438 display = fb2display(fbi);
1443 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1458 display->driver->get_resolution(display, &w, &h);
1460 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1461 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1462 omap_vrfb_min_phys_size(h, w, bytespp));
1464 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1465 w * h * bytespp, size);
1467 size = w * h * bytespp;
1474 return omapfb_alloc_fbmem(fbi, size, paddr);
1477 static int omapfb_parse_vram_param(const char *param, int max_entries,
1478 unsigned long *sizes, unsigned long *paddrs)
1482 unsigned long paddr = 0;
1485 start = (char *)param;
1490 fbnum = simple_strtoul(p, &p, 10);
1498 if (fbnum >= max_entries)
1501 size = memparse(p + 1, &p);
1509 paddr = simple_strtoul(p + 1, &p, 16);
1517 "reserving memory at predefined address not supported\n");
1519 paddrs[fbnum] = paddr;
1520 sizes[fbnum] = size;
1536 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1539 unsigned long vram_sizes[10];
1540 unsigned long vram_paddrs[10];
1542 memset(&vram_sizes, 0, sizeof(vram_sizes));
1543 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1545 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1546 vram_sizes, vram_paddrs)) {
1547 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1549 memset(&vram_sizes, 0, sizeof(vram_sizes));
1550 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1553 for (i = 0; i < fbdev->num_fbs; i++) {
1554 /* allocate memory automatically only for fb0, or if
1555 * excplicitly defined with vram or plat data option */
1556 if (i == 0 || vram_sizes[i] != 0) {
1557 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1558 vram_sizes[i], vram_paddrs[i]);
1565 for (i = 0; i < fbdev->num_fbs; i++) {
1566 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1567 struct omapfb2_mem_region *rg;
1570 DBG("region%d phys %08x virt %p size=%lu\n",
1580 static void omapfb_clear_fb(struct fb_info *fbi)
1582 const struct fb_fillrect rect = {
1585 .width = fbi->var.xres_virtual,
1586 .height = fbi->var.yres_virtual,
1591 cfb_fillrect(fbi, &rect);
1594 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1596 struct omapfb_info *ofbi = FB2OFB(fbi);
1597 struct omapfb2_device *fbdev = ofbi->fbdev;
1598 struct omapfb2_mem_region *rg = ofbi->region;
1599 unsigned long old_size = rg->size;
1600 unsigned long old_paddr = rg->paddr;
1601 int old_type = rg->type;
1604 if (type != OMAPFB_MEMTYPE_SDRAM)
1607 size = PAGE_ALIGN(size);
1609 if (old_size == size && old_type == type)
1612 omapfb_free_fbmem(fbi);
1619 r = omapfb_alloc_fbmem(fbi, size, 0);
1623 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1631 if (old_size == size)
1634 if (old_size == 0) {
1635 DBG("initializing fb %d\n", ofbi->id);
1636 r = omapfb_fb_init(fbdev, fbi);
1638 DBG("omapfb_fb_init failed\n");
1641 r = omapfb_apply_changes(fbi, 1);
1643 DBG("omapfb_apply_changes failed\n");
1647 struct fb_var_screeninfo new_var;
1648 memcpy(&new_var, &fbi->var, sizeof(new_var));
1649 r = check_fb_var(fbi, &new_var);
1652 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1654 r = setup_vrfb_rotation(fbi);
1659 omapfb_clear_fb(fbi);
1663 omapfb_free_fbmem(fbi);
1668 static void omapfb_auto_update_work(struct work_struct *work)
1670 struct omap_dss_device *dssdev;
1671 struct omap_dss_driver *dssdrv;
1672 struct omapfb_display_data *d;
1675 struct omapfb2_device *fbdev;
1677 d = container_of(work, struct omapfb_display_data,
1678 auto_update_work.work);
1681 dssdrv = dssdev->driver;
1684 if (!dssdrv || !dssdrv->update)
1688 dssdrv->sync(dssdev);
1690 dssdrv->get_resolution(dssdev, &w, &h);
1691 dssdrv->update(dssdev, 0, 0, w, h);
1693 freq = auto_update_freq;
1696 queue_delayed_work(fbdev->auto_update_wq,
1697 &d->auto_update_work, HZ / freq);
1700 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1701 struct omap_dss_device *display)
1703 struct omapfb_display_data *d;
1705 if (fbdev->auto_update_wq == NULL) {
1706 struct workqueue_struct *wq;
1708 wq = create_singlethread_workqueue("omapfb_auto_update");
1711 dev_err(fbdev->dev, "Failed to create workqueue for "
1716 fbdev->auto_update_wq = wq;
1719 d = get_display_data(fbdev, display);
1721 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1723 d->auto_update_work_enabled = true;
1725 omapfb_auto_update_work(&d->auto_update_work.work);
1728 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1729 struct omap_dss_device *display)
1731 struct omapfb_display_data *d;
1733 d = get_display_data(fbdev, display);
1735 cancel_delayed_work_sync(&d->auto_update_work);
1737 d->auto_update_work_enabled = false;
1740 /* initialize fb_info, var, fix to something sane based on the display */
1741 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1743 struct fb_var_screeninfo *var = &fbi->var;
1744 struct omap_dss_device *display = fb2display(fbi);
1745 struct omapfb_info *ofbi = FB2OFB(fbi);
1748 fbi->fbops = &omapfb_ops;
1749 fbi->flags = FBINFO_FLAG_DEFAULT;
1750 fbi->pseudo_palette = fbdev->pseudo_palette;
1752 if (ofbi->region->size == 0) {
1758 var->bits_per_pixel = 0;
1760 var->rotate = def_rotate;
1764 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1766 display->driver->get_resolution(display, &w, &h);
1768 if (rotation == FB_ROTATE_CW ||
1769 rotation == FB_ROTATE_CCW) {
1777 var->xres_virtual = var->xres;
1778 var->yres_virtual = var->yres;
1780 if (!var->bits_per_pixel) {
1781 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1783 var->bits_per_pixel = 16;
1786 var->bits_per_pixel = 32;
1789 dev_err(fbdev->dev, "illegal display "
1795 /* if there's no display, let's just guess some basic values */
1798 var->xres_virtual = var->xres;
1799 var->yres_virtual = var->yres;
1800 if (!var->bits_per_pixel)
1801 var->bits_per_pixel = 16;
1804 r = check_fb_var(fbi, var);
1809 r = setup_vrfb_rotation(fbi);
1813 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1815 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1821 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1823 fb_dealloc_cmap(&fbi->cmap);
1827 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1831 DBG("free_resources\n");
1836 for (i = 0; i < fbdev->num_overlays; i++) {
1837 struct omap_overlay *ovl = fbdev->overlays[i];
1842 ovl->unset_manager(ovl);
1845 for (i = 0; i < fbdev->num_fbs; i++)
1846 unregister_framebuffer(fbdev->fbs[i]);
1848 /* free the reserved fbmem */
1849 omapfb_free_all_fbmem(fbdev);
1851 for (i = 0; i < fbdev->num_fbs; i++) {
1852 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1853 framebuffer_release(fbdev->fbs[i]);
1856 for (i = 0; i < fbdev->num_displays; i++) {
1857 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1859 if (fbdev->displays[i].auto_update_work_enabled)
1860 omapfb_stop_auto_update(fbdev, dssdev);
1862 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1863 dssdev->driver->disable(dssdev);
1865 dssdev->driver->disconnect(dssdev);
1867 omap_dss_put_device(dssdev);
1870 if (fbdev->auto_update_wq != NULL) {
1871 flush_workqueue(fbdev->auto_update_wq);
1872 destroy_workqueue(fbdev->auto_update_wq);
1873 fbdev->auto_update_wq = NULL;
1876 dev_set_drvdata(fbdev->dev, NULL);
1879 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1885 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1887 /* allocate fb_infos */
1888 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1889 struct fb_info *fbi;
1890 struct omapfb_info *ofbi;
1892 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1897 "unable to allocate memory for plane info\n");
1903 fbdev->fbs[i] = fbi;
1906 ofbi->fbdev = fbdev;
1909 ofbi->region = &fbdev->regions[i];
1910 ofbi->region->id = i;
1911 init_rwsem(&ofbi->region->lock);
1913 /* assign these early, so that fb alloc can use them */
1914 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1916 ofbi->mirror = def_mirror;
1921 DBG("fb_infos allocated\n");
1923 /* assign overlays for the fbs */
1924 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1925 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1927 ofbi->overlays[0] = fbdev->overlays[i];
1928 ofbi->num_overlays = 1;
1931 /* allocate fb memories */
1932 r = omapfb_allocate_all_fbs(fbdev);
1934 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1938 DBG("fbmems allocated\n");
1940 /* setup fb_infos */
1941 for (i = 0; i < fbdev->num_fbs; i++) {
1942 struct fb_info *fbi = fbdev->fbs[i];
1943 struct omapfb_info *ofbi = FB2OFB(fbi);
1945 omapfb_get_mem_region(ofbi->region);
1946 r = omapfb_fb_init(fbdev, fbi);
1947 omapfb_put_mem_region(ofbi->region);
1950 dev_err(fbdev->dev, "failed to setup fb_info\n");
1955 for (i = 0; i < fbdev->num_fbs; i++) {
1956 struct fb_info *fbi = fbdev->fbs[i];
1957 struct omapfb_info *ofbi = FB2OFB(fbi);
1959 if (ofbi->region->size == 0)
1962 omapfb_clear_fb(fbi);
1965 DBG("fb_infos initialized\n");
1967 for (i = 0; i < fbdev->num_fbs; i++) {
1968 r = register_framebuffer(fbdev->fbs[i]);
1971 "registering framebuffer %d failed\n", i);
1976 DBG("framebuffers registered\n");
1978 for (i = 0; i < fbdev->num_fbs; i++) {
1979 struct fb_info *fbi = fbdev->fbs[i];
1980 struct omapfb_info *ofbi = FB2OFB(fbi);
1982 omapfb_get_mem_region(ofbi->region);
1983 r = omapfb_apply_changes(fbi, 1);
1984 omapfb_put_mem_region(ofbi->region);
1987 dev_err(fbdev->dev, "failed to change mode\n");
1993 if (fbdev->num_fbs > 0) {
1994 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1996 if (ofbi->num_overlays > 0) {
1997 struct omap_overlay *ovl = ofbi->overlays[0];
1999 ovl->manager->apply(ovl->manager);
2001 r = omapfb_overlay_enable(ovl, 1);
2005 "failed to enable overlay\n");
2011 DBG("create_framebuffers done\n");
2016 static int omapfb_mode_to_timings(const char *mode_str,
2017 struct omap_dss_device *display,
2018 struct omap_video_timings *timings, u8 *bpp)
2020 struct fb_info *fbi;
2021 struct fb_var_screeninfo *var;
2022 struct fb_ops *fbops;
2025 #ifdef CONFIG_OMAP2_DSS_VENC
2026 if (strcmp(mode_str, "pal") == 0) {
2027 *timings = omap_dss_pal_timings;
2030 } else if (strcmp(mode_str, "ntsc") == 0) {
2031 *timings = omap_dss_ntsc_timings;
2037 /* this is quite a hack, but I wanted to use the modedb and for
2038 * that we need fb_info and var, so we create dummy ones */
2045 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2051 var = kzalloc(sizeof(*var), GFP_KERNEL);
2057 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2058 if (fbops == NULL) {
2065 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2071 if (display->driver->get_timings) {
2072 display->driver->get_timings(display, timings);
2074 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2075 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2076 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2079 timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000;
2080 timings->hbp = var->left_margin;
2081 timings->hfp = var->right_margin;
2082 timings->vbp = var->upper_margin;
2083 timings->vfp = var->lower_margin;
2084 timings->hsw = var->hsync_len;
2085 timings->vsw = var->vsync_len;
2086 timings->x_res = var->xres;
2087 timings->y_res = var->yres;
2088 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2089 OMAPDSS_SIG_ACTIVE_HIGH :
2090 OMAPDSS_SIG_ACTIVE_LOW;
2091 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2092 OMAPDSS_SIG_ACTIVE_HIGH :
2093 OMAPDSS_SIG_ACTIVE_LOW;
2094 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2096 switch (var->bits_per_pixel) {
2117 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2118 struct omap_dss_device *display, char *mode_str)
2122 struct omap_video_timings timings, temp_timings;
2123 struct omapfb_display_data *d;
2125 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2129 d = get_display_data(fbdev, display);
2130 d->bpp_override = bpp;
2132 if (display->driver->check_timings) {
2133 r = display->driver->check_timings(display, &timings);
2137 /* If check_timings is not present compare xres and yres */
2138 if (display->driver->get_timings) {
2139 display->driver->get_timings(display, &temp_timings);
2141 if (temp_timings.x_res != timings.x_res ||
2142 temp_timings.y_res != timings.y_res)
2147 if (display->driver->set_timings)
2148 display->driver->set_timings(display, &timings);
2153 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2154 struct omap_dss_device *dssdev)
2156 struct omapfb_display_data *d;
2158 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2160 d = get_display_data(fbdev, dssdev);
2162 if (d->bpp_override != 0)
2163 return d->bpp_override;
2165 return dssdev->driver->get_recommended_bpp(dssdev);
2168 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2170 char *str, *options, *this_opt;
2173 str = kstrdup(def_mode, GFP_KERNEL);
2178 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2179 char *p, *display_str, *mode_str;
2180 struct omap_dss_device *display;
2183 p = strchr(this_opt, ':');
2190 display_str = this_opt;
2194 for (i = 0; i < fbdev->num_displays; ++i) {
2195 if (strcmp(fbdev->displays[i].dssdev->name,
2196 display_str) == 0) {
2197 display = fbdev->displays[i].dssdev;
2207 r = omapfb_set_def_mode(fbdev, display, mode_str);
2217 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2218 struct omap_dss_device *display,
2219 struct omap_video_timings *t)
2221 if (display->driver->get_timings) {
2222 display->driver->get_timings(display, t);
2224 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2225 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2226 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2231 t->pixelclock = PICOS2KHZ(m->pixclock) * 1000;
2232 t->hsw = m->hsync_len;
2233 t->hfp = m->right_margin;
2234 t->hbp = m->left_margin;
2235 t->vsw = m->vsync_len;
2236 t->vfp = m->lower_margin;
2237 t->vbp = m->upper_margin;
2238 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2239 OMAPDSS_SIG_ACTIVE_HIGH :
2240 OMAPDSS_SIG_ACTIVE_LOW;
2241 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2242 OMAPDSS_SIG_ACTIVE_HIGH :
2243 OMAPDSS_SIG_ACTIVE_LOW;
2244 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2247 static int omapfb_find_best_mode(struct omap_dss_device *display,
2248 struct omap_video_timings *timings)
2250 struct fb_monspecs *specs;
2252 int r, i, best_idx, len;
2254 if (!display->driver->read_edid)
2258 edid = kmalloc(len, GFP_KERNEL);
2262 r = display->driver->read_edid(display, edid, len);
2266 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2267 if (specs == NULL) {
2272 fb_edid_to_monspecs(edid, specs);
2276 for (i = 0; i < specs->modedb_len; ++i) {
2277 struct fb_videomode *m;
2278 struct omap_video_timings t;
2280 m = &specs->modedb[i];
2282 if (m->pixclock == 0)
2285 /* skip repeated pixel modes */
2286 if (m->xres == 2880 || m->xres == 1440)
2289 if (m->vmode & FB_VMODE_INTERLACED ||
2290 m->vmode & FB_VMODE_DOUBLE)
2293 fb_videomode_to_omap_timings(m, display, &t);
2295 r = display->driver->check_timings(display, &t);
2302 if (best_idx == -1) {
2307 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2313 fb_destroy_modedb(specs->modedb);
2321 static int omapfb_init_display(struct omapfb2_device *fbdev,
2322 struct omap_dss_device *dssdev)
2324 struct omap_dss_driver *dssdrv = dssdev->driver;
2325 struct omapfb_display_data *d;
2328 r = dssdrv->enable(dssdev);
2330 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2335 d = get_display_data(fbdev, dssdev);
2339 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2343 omapfb_start_auto_update(fbdev, dssdev);
2344 d->update_mode = OMAPFB_AUTO_UPDATE;
2346 d->update_mode = OMAPFB_MANUAL_UPDATE;
2349 if (dssdrv->enable_te) {
2350 r = dssdrv->enable_te(dssdev, 1);
2352 dev_err(fbdev->dev, "Failed to set TE\n");
2357 dssdrv->get_resolution(dssdev, &w, &h);
2358 r = dssdrv->update(dssdev, 0, 0, w, h);
2361 "Failed to update display\n");
2365 d->update_mode = OMAPFB_AUTO_UPDATE;
2371 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2372 struct omap_dss_device *def_dssdev)
2375 struct omap_overlay_manager *mgr;
2377 r = def_dssdev->driver->connect(def_dssdev);
2379 dev_err(fbdev->dev, "failed to connect default display\n");
2383 for (i = 0; i < fbdev->num_displays; ++i) {
2384 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2386 if (dssdev == def_dssdev)
2390 * We don't care if the connect succeeds or not. We just want to
2391 * connect as many displays as possible.
2393 dssdev->driver->connect(dssdev);
2396 mgr = omapdss_find_mgr_from_display(def_dssdev);
2399 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2403 for (i = 0; i < fbdev->num_overlays; i++) {
2404 struct omap_overlay *ovl = fbdev->overlays[i];
2407 ovl->unset_manager(ovl);
2409 r = ovl->set_manager(ovl, mgr);
2411 dev_warn(fbdev->dev,
2412 "failed to connect overlay %s to manager %s\n",
2413 ovl->name, mgr->name);
2419 static struct omap_dss_device *
2420 omapfb_find_default_display(struct omapfb2_device *fbdev)
2422 const char *def_name;
2426 * Search with the display name from the user or the board file,
2427 * comparing to display names and aliases
2430 def_name = omapdss_get_default_display_name();
2433 for (i = 0; i < fbdev->num_displays; ++i) {
2434 struct omap_dss_device *dssdev;
2436 dssdev = fbdev->displays[i].dssdev;
2438 if (dssdev->name && strcmp(def_name, dssdev->name) == 0)
2441 if (strcmp(def_name, dssdev->alias) == 0)
2445 /* def_name given but not found */
2449 /* then look for DT alias display0 */
2450 for (i = 0; i < fbdev->num_displays; ++i) {
2451 struct omap_dss_device *dssdev;
2454 dssdev = fbdev->displays[i].dssdev;
2456 if (dssdev->dev->of_node == NULL)
2459 id = of_alias_get_id(dssdev->dev->of_node, "display");
2464 /* return the first display we have in the list */
2465 return fbdev->displays[0].dssdev;
2468 static int omapfb_probe(struct platform_device *pdev)
2470 struct omapfb2_device *fbdev = NULL;
2473 struct omap_dss_device *def_display;
2474 struct omap_dss_device *dssdev;
2476 DBG("omapfb_probe\n");
2478 if (omapdss_is_initialized() == false)
2479 return -EPROBE_DEFER;
2481 if (pdev->num_resources != 0) {
2482 dev_err(&pdev->dev, "probed for an unknown device\n");
2487 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2489 if (fbdev == NULL) {
2494 if (def_vrfb && !omap_vrfb_supported()) {
2496 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2497 "ignoring the module parameter vrfb=y\n");
2500 r = omapdss_compat_init();
2504 mutex_init(&fbdev->mtx);
2506 fbdev->dev = &pdev->dev;
2507 platform_set_drvdata(pdev, fbdev);
2509 fbdev->num_displays = 0;
2511 for_each_dss_dev(dssdev) {
2512 struct omapfb_display_data *d;
2514 omap_dss_get_device(dssdev);
2516 if (!dssdev->driver) {
2517 dev_warn(&pdev->dev, "no driver for display: %s\n",
2519 omap_dss_put_device(dssdev);
2523 d = &fbdev->displays[fbdev->num_displays++];
2525 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2526 d->update_mode = OMAPFB_MANUAL_UPDATE;
2528 d->update_mode = OMAPFB_AUTO_UPDATE;
2531 if (fbdev->num_displays == 0) {
2532 dev_err(&pdev->dev, "no displays\n");
2537 fbdev->num_overlays = omap_dss_get_num_overlays();
2538 for (i = 0; i < fbdev->num_overlays; i++)
2539 fbdev->overlays[i] = omap_dss_get_overlay(i);
2541 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2542 for (i = 0; i < fbdev->num_managers; i++)
2543 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2545 def_display = omapfb_find_default_display(fbdev);
2546 if (def_display == NULL) {
2547 dev_err(fbdev->dev, "failed to find default display\n");
2552 r = omapfb_init_connections(fbdev, def_display);
2554 dev_err(fbdev->dev, "failed to init overlay connections\n");
2558 if (def_mode && strlen(def_mode) > 0) {
2559 if (omapfb_parse_def_modes(fbdev))
2560 dev_warn(&pdev->dev, "cannot parse default modes\n");
2561 } else if (def_display && def_display->driver->set_timings &&
2562 def_display->driver->check_timings) {
2563 struct omap_video_timings t;
2565 r = omapfb_find_best_mode(def_display, &t);
2568 def_display->driver->set_timings(def_display, &t);
2571 r = omapfb_create_framebuffers(fbdev);
2575 for (i = 0; i < fbdev->num_managers; i++) {
2576 struct omap_overlay_manager *mgr;
2577 mgr = fbdev->managers[i];
2578 r = mgr->apply(mgr);
2580 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2583 DBG("mgr->apply'ed\n");
2586 r = omapfb_init_display(fbdev, def_display);
2589 "failed to initialize default "
2595 DBG("create sysfs for fbs\n");
2596 r = omapfb_create_sysfs(fbdev);
2598 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2605 def_display->driver->get_resolution(def_display, &w, &h);
2607 dev_info(fbdev->dev, "using display '%s' mode %dx%d\n",
2608 def_display->name, w, h);
2614 omapfb_free_resources(fbdev);
2615 omapdss_compat_uninit();
2617 dev_err(&pdev->dev, "failed to setup omapfb\n");
2621 static int omapfb_remove(struct platform_device *pdev)
2623 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2625 /* FIXME: wait till completion of pending events */
2627 omapfb_remove_sysfs(fbdev);
2629 omapfb_free_resources(fbdev);
2631 omapdss_compat_uninit();
2636 static struct platform_driver omapfb_driver = {
2637 .probe = omapfb_probe,
2638 .remove = omapfb_remove,
2644 module_param_named(mode, def_mode, charp, 0);
2645 module_param_named(vram, def_vram, charp, 0);
2646 module_param_named(rotate, def_rotate, int, 0);
2647 module_param_named(vrfb, def_vrfb, bool, 0);
2648 module_param_named(mirror, def_mirror, bool, 0);
2650 module_platform_driver(omapfb_driver);
2652 MODULE_ALIAS("platform:omapfb");
2653 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2654 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2655 MODULE_LICENSE("GPL v2");