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/omapdss.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_var_to_colormode(struct fb_var_screeninfo *var,
277 struct omapfb_colormode *color)
279 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
281 return f1->length == f2->length &&
282 f1->offset == f2->offset &&
283 f1->msb_right == f2->msb_right;
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.pixel_clock != 0 ?
727 KHZ2PICOS(timings.pixel_clock) :
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 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;
1105 unsigned long start;
1109 if (vma->vm_end - vma->vm_start == 0)
1111 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1113 off = vma->vm_pgoff << PAGE_SHIFT;
1115 rg = omapfb_get_mem_region(ofbi->region);
1117 start = omapfb_get_region_paddr(ofbi);
1118 len = fix->smem_len;
1121 if ((vma->vm_end - vma->vm_start + off) > len)
1126 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1128 vma->vm_pgoff = off >> PAGE_SHIFT;
1129 /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
1130 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1131 vma->vm_ops = &mmap_user_ops;
1132 vma->vm_private_data = rg;
1133 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1134 vma->vm_end - vma->vm_start,
1135 vma->vm_page_prot)) {
1140 /* vm_ops.open won't be called for mmap itself. */
1141 atomic_inc(&rg->map_count);
1143 omapfb_put_mem_region(rg);
1148 omapfb_put_mem_region(ofbi->region);
1153 /* Store a single color palette entry into a pseudo palette or the hardware
1154 * palette if one is available. For now we support only 16bpp and thus store
1155 * the entry only to the pseudo palette.
1157 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1158 u_int blue, u_int transp, int update_hw_pal)
1160 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1161 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1162 struct fb_var_screeninfo *var = &fbi->var;
1165 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1167 /*switch (plane->color_mode) {*/
1169 case OMAPFB_COLOR_YUV422:
1170 case OMAPFB_COLOR_YUV420:
1171 case OMAPFB_COLOR_YUY422:
1174 case OMAPFB_COLOR_CLUT_8BPP:
1175 case OMAPFB_COLOR_CLUT_4BPP:
1176 case OMAPFB_COLOR_CLUT_2BPP:
1177 case OMAPFB_COLOR_CLUT_1BPP:
1179 if (fbdev->ctrl->setcolreg)
1180 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1181 transp, update_hw_pal);
1186 case OMAPFB_COLOR_RGB565:
1187 case OMAPFB_COLOR_RGB444:
1188 case OMAPFB_COLOR_RGB24P:
1189 case OMAPFB_COLOR_RGB24U:
1195 pal = ((red >> (16 - var->red.length)) <<
1197 ((green >> (16 - var->green.length)) <<
1198 var->green.offset) |
1199 (blue >> (16 - var->blue.length));
1200 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1209 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1210 u_int transp, struct fb_info *info)
1214 return _setcolreg(info, regno, red, green, blue, transp, 1);
1217 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1219 int count, index, r;
1220 u16 *red, *green, *blue, *transp;
1226 green = cmap->green;
1228 transp = cmap->transp;
1229 index = cmap->start;
1231 for (count = 0; count < cmap->len; count++) {
1234 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1235 count == cmap->len - 1);
1243 static int omapfb_blank(int blank, struct fb_info *fbi)
1245 struct omapfb_info *ofbi = FB2OFB(fbi);
1246 struct omapfb2_device *fbdev = ofbi->fbdev;
1247 struct omap_dss_device *display = fb2display(fbi);
1248 struct omapfb_display_data *d;
1256 d = get_display_data(fbdev, display);
1259 case FB_BLANK_UNBLANK:
1260 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1263 r = display->driver->enable(display);
1265 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1266 d->update_mode == OMAPFB_AUTO_UPDATE &&
1267 !d->auto_update_work_enabled)
1268 omapfb_start_auto_update(fbdev, display);
1272 case FB_BLANK_NORMAL:
1273 /* FB_BLANK_NORMAL could be implemented.
1274 * Needs DSS additions. */
1275 case FB_BLANK_VSYNC_SUSPEND:
1276 case FB_BLANK_HSYNC_SUSPEND:
1277 case FB_BLANK_POWERDOWN:
1278 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1281 if (d->auto_update_work_enabled)
1282 omapfb_stop_auto_update(fbdev, display);
1284 display->driver->disable(display);
1293 omapfb_unlock(fbdev);
1299 /* XXX fb_read and fb_write are needed for VRFB */
1300 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1301 size_t count, loff_t *ppos)
1303 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1304 /* XXX needed for VRFB */
1309 static struct fb_ops omapfb_ops = {
1310 .owner = THIS_MODULE,
1311 .fb_open = omapfb_open,
1312 .fb_release = omapfb_release,
1313 .fb_fillrect = cfb_fillrect,
1314 .fb_copyarea = cfb_copyarea,
1315 .fb_imageblit = cfb_imageblit,
1316 .fb_blank = omapfb_blank,
1317 .fb_ioctl = omapfb_ioctl,
1318 .fb_check_var = omapfb_check_var,
1319 .fb_set_par = omapfb_set_par,
1320 .fb_pan_display = omapfb_pan_display,
1321 .fb_mmap = omapfb_mmap,
1322 .fb_setcolreg = omapfb_setcolreg,
1323 .fb_setcmap = omapfb_setcmap,
1324 /*.fb_write = omapfb_write,*/
1327 static void omapfb_free_fbmem(struct fb_info *fbi)
1329 struct omapfb_info *ofbi = FB2OFB(fbi);
1330 struct omapfb2_device *fbdev = ofbi->fbdev;
1331 struct omapfb2_mem_region *rg;
1335 if (rg->token == NULL)
1338 WARN_ON(atomic_read(&rg->map_count));
1340 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1341 /* unmap the 0 angle rotation */
1342 if (rg->vrfb.vaddr[0]) {
1343 iounmap(rg->vrfb.vaddr[0]);
1344 rg->vrfb.vaddr[0] = NULL;
1347 omap_vrfb_release_ctx(&rg->vrfb);
1350 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1360 static void clear_fb_info(struct fb_info *fbi)
1362 memset(&fbi->var, 0, sizeof(fbi->var));
1363 memset(&fbi->fix, 0, sizeof(fbi->fix));
1364 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1367 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1371 DBG("free all fbmem\n");
1373 for (i = 0; i < fbdev->num_fbs; i++) {
1374 struct fb_info *fbi = fbdev->fbs[i];
1375 omapfb_free_fbmem(fbi);
1382 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1383 unsigned long paddr)
1385 struct omapfb_info *ofbi = FB2OFB(fbi);
1386 struct omapfb2_device *fbdev = ofbi->fbdev;
1387 struct omapfb2_mem_region *rg;
1389 DEFINE_DMA_ATTRS(attrs);
1390 dma_addr_t dma_handle;
1397 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1403 size = PAGE_ALIGN(size);
1405 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
1407 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1408 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
1410 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1412 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1413 GFP_KERNEL, &attrs);
1415 if (token == NULL) {
1416 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1420 DBG("allocated VRAM paddr %lx, vaddr %p\n",
1421 (unsigned long)dma_handle, token);
1423 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1424 r = omap_vrfb_request_ctx(&rg->vrfb);
1426 dma_free_attrs(fbdev->dev, size, token, dma_handle,
1428 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1435 rg->dma_handle = dma_handle;
1437 rg->paddr = (unsigned long)dma_handle;
1438 rg->vaddr = (void __iomem *)token;
1445 /* allocate fbmem using display resolution as reference */
1446 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1447 unsigned long paddr)
1449 struct omapfb_info *ofbi = FB2OFB(fbi);
1450 struct omapfb2_device *fbdev = ofbi->fbdev;
1451 struct omap_dss_device *display;
1454 display = fb2display(fbi);
1459 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1474 display->driver->get_resolution(display, &w, &h);
1476 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1477 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1478 omap_vrfb_min_phys_size(h, w, bytespp));
1480 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1481 w * h * bytespp, size);
1483 size = w * h * bytespp;
1490 return omapfb_alloc_fbmem(fbi, size, paddr);
1493 static int omapfb_parse_vram_param(const char *param, int max_entries,
1494 unsigned long *sizes, unsigned long *paddrs)
1498 unsigned long paddr = 0;
1501 start = (char *)param;
1506 fbnum = simple_strtoul(p, &p, 10);
1514 if (fbnum >= max_entries)
1517 size = memparse(p + 1, &p);
1525 paddr = simple_strtoul(p + 1, &p, 16);
1533 "reserving memory at predefined address not supported\n");
1535 paddrs[fbnum] = paddr;
1536 sizes[fbnum] = size;
1552 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1555 unsigned long vram_sizes[10];
1556 unsigned long vram_paddrs[10];
1558 memset(&vram_sizes, 0, sizeof(vram_sizes));
1559 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1561 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1562 vram_sizes, vram_paddrs)) {
1563 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1565 memset(&vram_sizes, 0, sizeof(vram_sizes));
1566 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1569 for (i = 0; i < fbdev->num_fbs; i++) {
1570 /* allocate memory automatically only for fb0, or if
1571 * excplicitly defined with vram or plat data option */
1572 if (i == 0 || vram_sizes[i] != 0) {
1573 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1574 vram_sizes[i], vram_paddrs[i]);
1581 for (i = 0; i < fbdev->num_fbs; i++) {
1582 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1583 struct omapfb2_mem_region *rg;
1586 DBG("region%d phys %08x virt %p size=%lu\n",
1596 static void omapfb_clear_fb(struct fb_info *fbi)
1598 const struct fb_fillrect rect = {
1601 .width = fbi->var.xres_virtual,
1602 .height = fbi->var.yres_virtual,
1607 cfb_fillrect(fbi, &rect);
1610 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1612 struct omapfb_info *ofbi = FB2OFB(fbi);
1613 struct omapfb2_device *fbdev = ofbi->fbdev;
1614 struct omapfb2_mem_region *rg = ofbi->region;
1615 unsigned long old_size = rg->size;
1616 unsigned long old_paddr = rg->paddr;
1617 int old_type = rg->type;
1620 if (type != OMAPFB_MEMTYPE_SDRAM)
1623 size = PAGE_ALIGN(size);
1625 if (old_size == size && old_type == type)
1628 omapfb_free_fbmem(fbi);
1635 r = omapfb_alloc_fbmem(fbi, size, 0);
1639 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1647 if (old_size == size)
1650 if (old_size == 0) {
1651 DBG("initializing fb %d\n", ofbi->id);
1652 r = omapfb_fb_init(fbdev, fbi);
1654 DBG("omapfb_fb_init failed\n");
1657 r = omapfb_apply_changes(fbi, 1);
1659 DBG("omapfb_apply_changes failed\n");
1663 struct fb_var_screeninfo new_var;
1664 memcpy(&new_var, &fbi->var, sizeof(new_var));
1665 r = check_fb_var(fbi, &new_var);
1668 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1670 r = setup_vrfb_rotation(fbi);
1675 omapfb_clear_fb(fbi);
1679 omapfb_free_fbmem(fbi);
1684 static void omapfb_auto_update_work(struct work_struct *work)
1686 struct omap_dss_device *dssdev;
1687 struct omap_dss_driver *dssdrv;
1688 struct omapfb_display_data *d;
1691 struct omapfb2_device *fbdev;
1693 d = container_of(work, struct omapfb_display_data,
1694 auto_update_work.work);
1697 dssdrv = dssdev->driver;
1700 if (!dssdrv || !dssdrv->update)
1704 dssdrv->sync(dssdev);
1706 dssdrv->get_resolution(dssdev, &w, &h);
1707 dssdrv->update(dssdev, 0, 0, w, h);
1709 freq = auto_update_freq;
1712 queue_delayed_work(fbdev->auto_update_wq,
1713 &d->auto_update_work, HZ / freq);
1716 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1717 struct omap_dss_device *display)
1719 struct omapfb_display_data *d;
1721 if (fbdev->auto_update_wq == NULL) {
1722 struct workqueue_struct *wq;
1724 wq = create_singlethread_workqueue("omapfb_auto_update");
1727 dev_err(fbdev->dev, "Failed to create workqueue for "
1732 fbdev->auto_update_wq = wq;
1735 d = get_display_data(fbdev, display);
1737 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1739 d->auto_update_work_enabled = true;
1741 omapfb_auto_update_work(&d->auto_update_work.work);
1744 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1745 struct omap_dss_device *display)
1747 struct omapfb_display_data *d;
1749 d = get_display_data(fbdev, display);
1751 cancel_delayed_work_sync(&d->auto_update_work);
1753 d->auto_update_work_enabled = false;
1756 /* initialize fb_info, var, fix to something sane based on the display */
1757 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1759 struct fb_var_screeninfo *var = &fbi->var;
1760 struct omap_dss_device *display = fb2display(fbi);
1761 struct omapfb_info *ofbi = FB2OFB(fbi);
1764 fbi->fbops = &omapfb_ops;
1765 fbi->flags = FBINFO_FLAG_DEFAULT;
1766 fbi->pseudo_palette = fbdev->pseudo_palette;
1768 if (ofbi->region->size == 0) {
1774 var->bits_per_pixel = 0;
1776 var->rotate = def_rotate;
1780 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1782 display->driver->get_resolution(display, &w, &h);
1784 if (rotation == FB_ROTATE_CW ||
1785 rotation == FB_ROTATE_CCW) {
1793 var->xres_virtual = var->xres;
1794 var->yres_virtual = var->yres;
1796 if (!var->bits_per_pixel) {
1797 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1799 var->bits_per_pixel = 16;
1802 var->bits_per_pixel = 32;
1805 dev_err(fbdev->dev, "illegal display "
1811 /* if there's no display, let's just guess some basic values */
1814 var->xres_virtual = var->xres;
1815 var->yres_virtual = var->yres;
1816 if (!var->bits_per_pixel)
1817 var->bits_per_pixel = 16;
1820 r = check_fb_var(fbi, var);
1825 r = setup_vrfb_rotation(fbi);
1829 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1831 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1837 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1839 fb_dealloc_cmap(&fbi->cmap);
1843 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1847 DBG("free_resources\n");
1852 for (i = 0; i < fbdev->num_fbs; i++)
1853 unregister_framebuffer(fbdev->fbs[i]);
1855 /* free the reserved fbmem */
1856 omapfb_free_all_fbmem(fbdev);
1858 for (i = 0; i < fbdev->num_fbs; i++) {
1859 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1860 framebuffer_release(fbdev->fbs[i]);
1863 for (i = 0; i < fbdev->num_displays; i++) {
1864 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1866 if (fbdev->displays[i].auto_update_work_enabled)
1867 omapfb_stop_auto_update(fbdev, dssdev);
1869 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1870 dssdev->driver->disable(dssdev);
1872 omap_dss_put_device(dssdev);
1875 if (fbdev->auto_update_wq != NULL) {
1876 flush_workqueue(fbdev->auto_update_wq);
1877 destroy_workqueue(fbdev->auto_update_wq);
1878 fbdev->auto_update_wq = NULL;
1881 dev_set_drvdata(fbdev->dev, NULL);
1884 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1890 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1892 /* allocate fb_infos */
1893 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1894 struct fb_info *fbi;
1895 struct omapfb_info *ofbi;
1897 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1902 "unable to allocate memory for plane info\n");
1908 fbdev->fbs[i] = fbi;
1911 ofbi->fbdev = fbdev;
1914 ofbi->region = &fbdev->regions[i];
1915 ofbi->region->id = i;
1916 init_rwsem(&ofbi->region->lock);
1918 /* assign these early, so that fb alloc can use them */
1919 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1921 ofbi->mirror = def_mirror;
1926 DBG("fb_infos allocated\n");
1928 /* assign overlays for the fbs */
1929 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1930 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1932 ofbi->overlays[0] = fbdev->overlays[i];
1933 ofbi->num_overlays = 1;
1936 /* allocate fb memories */
1937 r = omapfb_allocate_all_fbs(fbdev);
1939 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1943 DBG("fbmems allocated\n");
1945 /* setup fb_infos */
1946 for (i = 0; i < fbdev->num_fbs; i++) {
1947 struct fb_info *fbi = fbdev->fbs[i];
1948 struct omapfb_info *ofbi = FB2OFB(fbi);
1950 omapfb_get_mem_region(ofbi->region);
1951 r = omapfb_fb_init(fbdev, fbi);
1952 omapfb_put_mem_region(ofbi->region);
1955 dev_err(fbdev->dev, "failed to setup fb_info\n");
1960 for (i = 0; i < fbdev->num_fbs; i++) {
1961 struct fb_info *fbi = fbdev->fbs[i];
1962 struct omapfb_info *ofbi = FB2OFB(fbi);
1964 if (ofbi->region->size == 0)
1967 omapfb_clear_fb(fbi);
1970 DBG("fb_infos initialized\n");
1972 for (i = 0; i < fbdev->num_fbs; i++) {
1973 r = register_framebuffer(fbdev->fbs[i]);
1976 "registering framebuffer %d failed\n", i);
1981 DBG("framebuffers registered\n");
1983 for (i = 0; i < fbdev->num_fbs; i++) {
1984 struct fb_info *fbi = fbdev->fbs[i];
1985 struct omapfb_info *ofbi = FB2OFB(fbi);
1987 omapfb_get_mem_region(ofbi->region);
1988 r = omapfb_apply_changes(fbi, 1);
1989 omapfb_put_mem_region(ofbi->region);
1992 dev_err(fbdev->dev, "failed to change mode\n");
1998 if (fbdev->num_fbs > 0) {
1999 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2001 if (ofbi->num_overlays > 0) {
2002 struct omap_overlay *ovl = ofbi->overlays[0];
2004 ovl->manager->apply(ovl->manager);
2006 r = omapfb_overlay_enable(ovl, 1);
2010 "failed to enable overlay\n");
2016 DBG("create_framebuffers done\n");
2021 static int omapfb_mode_to_timings(const char *mode_str,
2022 struct omap_dss_device *display,
2023 struct omap_video_timings *timings, u8 *bpp)
2025 struct fb_info *fbi;
2026 struct fb_var_screeninfo *var;
2027 struct fb_ops *fbops;
2030 #ifdef CONFIG_OMAP2_DSS_VENC
2031 if (strcmp(mode_str, "pal") == 0) {
2032 *timings = omap_dss_pal_timings;
2035 } else if (strcmp(mode_str, "ntsc") == 0) {
2036 *timings = omap_dss_ntsc_timings;
2042 /* this is quite a hack, but I wanted to use the modedb and for
2043 * that we need fb_info and var, so we create dummy ones */
2050 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2056 var = kzalloc(sizeof(*var), GFP_KERNEL);
2062 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2063 if (fbops == NULL) {
2070 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2076 if (display->driver->get_timings) {
2077 display->driver->get_timings(display, timings);
2079 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2080 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2081 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2084 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2085 timings->hbp = var->left_margin;
2086 timings->hfp = var->right_margin;
2087 timings->vbp = var->upper_margin;
2088 timings->vfp = var->lower_margin;
2089 timings->hsw = var->hsync_len;
2090 timings->vsw = var->vsync_len;
2091 timings->x_res = var->xres;
2092 timings->y_res = var->yres;
2093 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2094 OMAPDSS_SIG_ACTIVE_HIGH :
2095 OMAPDSS_SIG_ACTIVE_LOW;
2096 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2097 OMAPDSS_SIG_ACTIVE_HIGH :
2098 OMAPDSS_SIG_ACTIVE_LOW;
2099 timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2101 switch (var->bits_per_pixel) {
2122 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2123 struct omap_dss_device *display, char *mode_str)
2127 struct omap_video_timings timings, temp_timings;
2128 struct omapfb_display_data *d;
2130 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2134 d = get_display_data(fbdev, display);
2135 d->bpp_override = bpp;
2137 if (display->driver->check_timings) {
2138 r = display->driver->check_timings(display, &timings);
2142 /* If check_timings is not present compare xres and yres */
2143 if (display->driver->get_timings) {
2144 display->driver->get_timings(display, &temp_timings);
2146 if (temp_timings.x_res != timings.x_res ||
2147 temp_timings.y_res != timings.y_res)
2152 if (display->driver->set_timings)
2153 display->driver->set_timings(display, &timings);
2158 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2159 struct omap_dss_device *dssdev)
2161 struct omapfb_display_data *d;
2163 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2165 d = get_display_data(fbdev, dssdev);
2167 if (d->bpp_override != 0)
2168 return d->bpp_override;
2170 return dssdev->driver->get_recommended_bpp(dssdev);
2173 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2175 char *str, *options, *this_opt;
2178 str = kstrdup(def_mode, GFP_KERNEL);
2183 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2184 char *p, *display_str, *mode_str;
2185 struct omap_dss_device *display;
2188 p = strchr(this_opt, ':');
2195 display_str = this_opt;
2199 for (i = 0; i < fbdev->num_displays; ++i) {
2200 if (strcmp(fbdev->displays[i].dssdev->name,
2201 display_str) == 0) {
2202 display = fbdev->displays[i].dssdev;
2212 r = omapfb_set_def_mode(fbdev, display, mode_str);
2222 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2223 struct omap_dss_device *display,
2224 struct omap_video_timings *t)
2226 if (display->driver->get_timings) {
2227 display->driver->get_timings(display, t);
2229 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2230 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2231 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2236 t->pixel_clock = PICOS2KHZ(m->pixclock);
2237 t->hsw = m->hsync_len;
2238 t->hfp = m->right_margin;
2239 t->hbp = m->left_margin;
2240 t->vsw = m->vsync_len;
2241 t->vfp = m->lower_margin;
2242 t->vbp = m->upper_margin;
2243 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2244 OMAPDSS_SIG_ACTIVE_HIGH :
2245 OMAPDSS_SIG_ACTIVE_LOW;
2246 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2247 OMAPDSS_SIG_ACTIVE_HIGH :
2248 OMAPDSS_SIG_ACTIVE_LOW;
2249 t->interlace = m->vmode & FB_VMODE_INTERLACED;
2252 static int omapfb_find_best_mode(struct omap_dss_device *display,
2253 struct omap_video_timings *timings)
2255 struct fb_monspecs *specs;
2257 int r, i, best_idx, len;
2259 if (!display->driver->read_edid)
2263 edid = kmalloc(len, GFP_KERNEL);
2267 r = display->driver->read_edid(display, edid, len);
2271 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2272 if (specs == NULL) {
2277 fb_edid_to_monspecs(edid, specs);
2281 for (i = 0; i < specs->modedb_len; ++i) {
2282 struct fb_videomode *m;
2283 struct omap_video_timings t;
2285 m = &specs->modedb[i];
2287 if (m->pixclock == 0)
2290 /* skip repeated pixel modes */
2291 if (m->xres == 2880 || m->xres == 1440)
2294 if (m->vmode & FB_VMODE_INTERLACED ||
2295 m->vmode & FB_VMODE_DOUBLE)
2298 fb_videomode_to_omap_timings(m, display, &t);
2300 r = display->driver->check_timings(display, &t);
2307 if (best_idx == -1) {
2312 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2318 fb_destroy_modedb(specs->modedb);
2326 static int omapfb_init_display(struct omapfb2_device *fbdev,
2327 struct omap_dss_device *dssdev)
2329 struct omap_dss_driver *dssdrv = dssdev->driver;
2330 struct omapfb_display_data *d;
2333 r = dssdrv->enable(dssdev);
2335 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2340 d = get_display_data(fbdev, dssdev);
2344 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2348 omapfb_start_auto_update(fbdev, dssdev);
2349 d->update_mode = OMAPFB_AUTO_UPDATE;
2351 d->update_mode = OMAPFB_MANUAL_UPDATE;
2354 if (dssdrv->enable_te) {
2355 r = dssdrv->enable_te(dssdev, 1);
2357 dev_err(fbdev->dev, "Failed to set TE\n");
2362 dssdrv->get_resolution(dssdev, &w, &h);
2363 r = dssdrv->update(dssdev, 0, 0, w, h);
2366 "Failed to update display\n");
2370 d->update_mode = OMAPFB_AUTO_UPDATE;
2376 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2377 struct omap_dss_device *def_dssdev)
2380 struct omap_overlay_manager *mgr;
2382 if (!def_dssdev->output) {
2383 dev_err(fbdev->dev, "no output for the default display\n");
2387 for (i = 0; i < fbdev->num_displays; ++i) {
2388 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2389 struct omap_dss_output *out = dssdev->output;
2391 mgr = omap_dss_get_overlay_manager(dssdev->channel);
2397 mgr->unset_output(mgr);
2399 mgr->set_output(mgr, out);
2402 mgr = def_dssdev->output->manager;
2405 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2409 for (i = 0; i < fbdev->num_overlays; i++) {
2410 struct omap_overlay *ovl = fbdev->overlays[i];
2413 ovl->unset_manager(ovl);
2415 r = ovl->set_manager(ovl, mgr);
2417 dev_warn(fbdev->dev,
2418 "failed to connect overlay %s to manager %s\n",
2419 ovl->name, mgr->name);
2425 static int __init omapfb_probe(struct platform_device *pdev)
2427 struct omapfb2_device *fbdev = NULL;
2430 struct omap_dss_device *def_display;
2431 struct omap_dss_device *dssdev;
2433 DBG("omapfb_probe\n");
2435 if (pdev->num_resources != 0) {
2436 dev_err(&pdev->dev, "probed for an unknown device\n");
2441 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2443 if (fbdev == NULL) {
2448 if (def_vrfb && !omap_vrfb_supported()) {
2450 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2451 "ignoring the module parameter vrfb=y\n");
2454 r = omapdss_compat_init();
2458 mutex_init(&fbdev->mtx);
2460 fbdev->dev = &pdev->dev;
2461 platform_set_drvdata(pdev, fbdev);
2463 fbdev->num_displays = 0;
2465 for_each_dss_dev(dssdev) {
2466 struct omapfb_display_data *d;
2468 omap_dss_get_device(dssdev);
2470 if (!dssdev->driver) {
2471 dev_warn(&pdev->dev, "no driver for display: %s\n",
2473 omap_dss_put_device(dssdev);
2477 d = &fbdev->displays[fbdev->num_displays++];
2479 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2480 d->update_mode = OMAPFB_MANUAL_UPDATE;
2482 d->update_mode = OMAPFB_AUTO_UPDATE;
2485 if (fbdev->num_displays == 0) {
2486 dev_err(&pdev->dev, "no displays\n");
2491 fbdev->num_overlays = omap_dss_get_num_overlays();
2492 for (i = 0; i < fbdev->num_overlays; i++)
2493 fbdev->overlays[i] = omap_dss_get_overlay(i);
2495 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2496 for (i = 0; i < fbdev->num_managers; i++)
2497 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2501 for (i = 0; i < fbdev->num_displays; ++i) {
2502 struct omap_dss_device *dssdev;
2503 const char *def_name;
2505 def_name = omapdss_get_default_display_name();
2507 dssdev = fbdev->displays[i].dssdev;
2509 if (def_name == NULL ||
2510 (dssdev->name && strcmp(def_name, dssdev->name) == 0)) {
2511 def_display = dssdev;
2516 if (def_display == NULL) {
2517 dev_err(fbdev->dev, "failed to find default display\n");
2522 r = omapfb_init_connections(fbdev, def_display);
2524 dev_err(fbdev->dev, "failed to init overlay connections\n");
2528 if (def_mode && strlen(def_mode) > 0) {
2529 if (omapfb_parse_def_modes(fbdev))
2530 dev_warn(&pdev->dev, "cannot parse default modes\n");
2531 } else if (def_display && def_display->driver->set_timings &&
2532 def_display->driver->check_timings) {
2533 struct omap_video_timings t;
2535 r = omapfb_find_best_mode(def_display, &t);
2538 def_display->driver->set_timings(def_display, &t);
2541 r = omapfb_create_framebuffers(fbdev);
2545 for (i = 0; i < fbdev->num_managers; i++) {
2546 struct omap_overlay_manager *mgr;
2547 mgr = fbdev->managers[i];
2548 r = mgr->apply(mgr);
2550 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2553 DBG("mgr->apply'ed\n");
2556 r = omapfb_init_display(fbdev, def_display);
2559 "failed to initialize default "
2565 DBG("create sysfs for fbs\n");
2566 r = omapfb_create_sysfs(fbdev);
2568 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2575 omapfb_free_resources(fbdev);
2576 omapdss_compat_uninit();
2578 dev_err(&pdev->dev, "failed to setup omapfb\n");
2582 static int __exit omapfb_remove(struct platform_device *pdev)
2584 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2586 /* FIXME: wait till completion of pending events */
2588 omapfb_remove_sysfs(fbdev);
2590 omapfb_free_resources(fbdev);
2592 omapdss_compat_uninit();
2597 static struct platform_driver omapfb_driver = {
2598 .remove = __exit_p(omapfb_remove),
2601 .owner = THIS_MODULE,
2605 static int __init omapfb_init(void)
2607 DBG("omapfb_init\n");
2609 if (platform_driver_probe(&omapfb_driver, omapfb_probe)) {
2610 printk(KERN_ERR "failed to register omapfb driver\n");
2617 static void __exit omapfb_exit(void)
2619 DBG("omapfb_exit\n");
2620 platform_driver_unregister(&omapfb_driver);
2623 module_param_named(mode, def_mode, charp, 0);
2624 module_param_named(vram, def_vram, charp, 0);
2625 module_param_named(rotate, def_rotate, int, 0);
2626 module_param_named(vrfb, def_vrfb, bool, 0);
2627 module_param_named(mirror, def_mirror, bool, 0);
2629 /* late_initcall to let panel/ctrl drivers loaded first.
2630 * I guess better option would be a more dynamic approach,
2631 * so that omapfb reacts to new panels when they are loaded */
2632 late_initcall(omapfb_init);
2633 /*module_init(omapfb_init);*/
2634 module_exit(omapfb_exit);
2636 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2637 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2638 MODULE_LICENSE("GPL v2");