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 <plat/vram.h>
35 #include <plat/vrfb.h>
39 #define MODULE_NAME "omapfb"
41 #define OMAPFB_PLANE_XRES_MIN 8
42 #define OMAPFB_PLANE_YRES_MIN 8
44 static char *def_mode;
45 static char *def_vram;
47 static int def_rotate;
48 static int def_mirror;
49 static bool auto_update;
50 static unsigned int auto_update_freq;
51 static bool def_vram_cache = true;
52 module_param(auto_update, bool, 0);
53 module_param(auto_update_freq, uint, 0644);
56 unsigned int omapfb_debug;
57 module_param_named(debug, omapfb_debug, bool, 0644);
58 static unsigned int omapfb_test_pattern;
59 module_param_named(test, omapfb_test_pattern, bool, 0644);
62 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
63 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
64 struct omap_dss_device *dssdev);
67 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
69 struct fb_var_screeninfo *var = &fbi->var;
70 struct fb_fix_screeninfo *fix = &fbi->fix;
71 void __iomem *addr = fbi->screen_base;
72 const unsigned bytespp = var->bits_per_pixel >> 3;
73 const unsigned line_len = fix->line_length / bytespp;
75 int r = (color >> 16) & 0xff;
76 int g = (color >> 8) & 0xff;
77 int b = (color >> 0) & 0xff;
79 if (var->bits_per_pixel == 16) {
80 u16 __iomem *p = (u16 __iomem *)addr;
81 p += y * line_len + x;
87 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
88 } else if (var->bits_per_pixel == 24) {
89 u8 __iomem *p = (u8 __iomem *)addr;
90 p += (y * line_len + x) * 3;
92 __raw_writeb(b, p + 0);
93 __raw_writeb(g, p + 1);
94 __raw_writeb(r, p + 2);
95 } else if (var->bits_per_pixel == 32) {
96 u32 __iomem *p = (u32 __iomem *)addr;
97 p += y * line_len + x;
98 __raw_writel(color, p);
102 static void fill_fb(struct fb_info *fbi)
104 struct fb_var_screeninfo *var = &fbi->var;
105 const short w = var->xres_virtual;
106 const short h = var->yres_virtual;
107 void __iomem *addr = fbi->screen_base;
113 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
115 for (y = 0; y < h; y++) {
116 for (x = 0; x < w; x++) {
117 if (x < 20 && y < 20)
118 draw_pixel(fbi, x, y, 0xffffff);
119 else if (x < 20 && (y > 20 && y < h - 20))
120 draw_pixel(fbi, x, y, 0xff);
121 else if (y < 20 && (x > 20 && x < w - 20))
122 draw_pixel(fbi, x, y, 0xff00);
123 else if (x > w - 20 && (y > 20 && y < h - 20))
124 draw_pixel(fbi, x, y, 0xff0000);
125 else if (y > h - 20 && (x > 20 && x < w - 20))
126 draw_pixel(fbi, x, y, 0xffff00);
127 else if (x == 20 || x == w - 20 ||
128 y == 20 || y == h - 20)
129 draw_pixel(fbi, x, y, 0xffffff);
130 else if (x == y || w - x == h - y)
131 draw_pixel(fbi, x, y, 0xff00ff);
132 else if (w - x == y || x == h - y)
133 draw_pixel(fbi, x, y, 0x00ffff);
134 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
136 unsigned r = 0, g = 0, b = 0;
138 if (var->bits_per_pixel == 16) {
140 b = (y % 32) * 256 / 32;
142 g = (y % 64) * 256 / 64;
144 r = (y % 32) * 256 / 32;
153 c = (r << 16) | (g << 8) | (b << 0);
154 draw_pixel(fbi, x, y, c);
156 draw_pixel(fbi, x, y, 0);
163 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
165 const struct vrfb *vrfb = &ofbi->region->vrfb;
173 offset = vrfb->yoffset;
176 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
179 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
185 offset *= vrfb->bytespp;
190 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
192 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
193 return ofbi->region->vrfb.paddr[rot]
194 + omapfb_get_vrfb_offset(ofbi, rot);
196 return ofbi->region->paddr;
200 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
202 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
203 return ofbi->region->vrfb.paddr[0];
205 return ofbi->region->paddr;
208 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
210 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
211 return ofbi->region->vrfb.vaddr[0];
213 return ofbi->region->vaddr;
216 static struct omapfb_colormode omapfb_colormodes[] = {
218 .dssmode = OMAP_DSS_COLOR_UYVY,
219 .bits_per_pixel = 16,
220 .nonstd = OMAPFB_COLOR_YUV422,
222 .dssmode = OMAP_DSS_COLOR_YUV2,
223 .bits_per_pixel = 16,
224 .nonstd = OMAPFB_COLOR_YUY422,
226 .dssmode = OMAP_DSS_COLOR_ARGB16,
227 .bits_per_pixel = 16,
228 .red = { .length = 4, .offset = 8, .msb_right = 0 },
229 .green = { .length = 4, .offset = 4, .msb_right = 0 },
230 .blue = { .length = 4, .offset = 0, .msb_right = 0 },
231 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
233 .dssmode = OMAP_DSS_COLOR_RGB16,
234 .bits_per_pixel = 16,
235 .red = { .length = 5, .offset = 11, .msb_right = 0 },
236 .green = { .length = 6, .offset = 5, .msb_right = 0 },
237 .blue = { .length = 5, .offset = 0, .msb_right = 0 },
238 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
240 .dssmode = OMAP_DSS_COLOR_RGB24P,
241 .bits_per_pixel = 24,
242 .red = { .length = 8, .offset = 16, .msb_right = 0 },
243 .green = { .length = 8, .offset = 8, .msb_right = 0 },
244 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
245 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
247 .dssmode = OMAP_DSS_COLOR_RGB24U,
248 .bits_per_pixel = 32,
249 .red = { .length = 8, .offset = 16, .msb_right = 0 },
250 .green = { .length = 8, .offset = 8, .msb_right = 0 },
251 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
252 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
254 .dssmode = OMAP_DSS_COLOR_ARGB32,
255 .bits_per_pixel = 32,
256 .red = { .length = 8, .offset = 16, .msb_right = 0 },
257 .green = { .length = 8, .offset = 8, .msb_right = 0 },
258 .blue = { .length = 8, .offset = 0, .msb_right = 0 },
259 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
261 .dssmode = OMAP_DSS_COLOR_RGBA32,
262 .bits_per_pixel = 32,
263 .red = { .length = 8, .offset = 24, .msb_right = 0 },
264 .green = { .length = 8, .offset = 16, .msb_right = 0 },
265 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
266 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
268 .dssmode = OMAP_DSS_COLOR_RGBX32,
269 .bits_per_pixel = 32,
270 .red = { .length = 8, .offset = 24, .msb_right = 0 },
271 .green = { .length = 8, .offset = 16, .msb_right = 0 },
272 .blue = { .length = 8, .offset = 8, .msb_right = 0 },
273 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
277 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
278 struct omapfb_colormode *color)
280 bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
282 return f1->length == f2->length &&
283 f1->offset == f2->offset &&
284 f1->msb_right == f2->msb_right;
287 if (var->bits_per_pixel == 0 ||
288 var->red.length == 0 ||
289 var->blue.length == 0 ||
290 var->green.length == 0)
293 return var->bits_per_pixel == color->bits_per_pixel &&
294 cmp_component(&var->red, &color->red) &&
295 cmp_component(&var->green, &color->green) &&
296 cmp_component(&var->blue, &color->blue) &&
297 cmp_component(&var->transp, &color->transp);
300 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
301 struct omapfb_colormode *color)
303 var->bits_per_pixel = color->bits_per_pixel;
304 var->nonstd = color->nonstd;
305 var->red = color->red;
306 var->green = color->green;
307 var->blue = color->blue;
308 var->transp = color->transp;
311 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
312 enum omap_color_mode *mode)
314 enum omap_color_mode dssmode;
317 /* first match with nonstd field */
319 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
320 struct omapfb_colormode *m = &omapfb_colormodes[i];
321 if (var->nonstd == m->nonstd) {
322 assign_colormode_to_var(var, m);
331 /* then try exact match of bpp and colors */
332 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
333 struct omapfb_colormode *m = &omapfb_colormodes[i];
334 if (cmp_var_to_colormode(var, m)) {
335 assign_colormode_to_var(var, m);
341 /* match with bpp if user has not filled color fields
343 switch (var->bits_per_pixel) {
345 dssmode = OMAP_DSS_COLOR_CLUT1;
348 dssmode = OMAP_DSS_COLOR_CLUT2;
351 dssmode = OMAP_DSS_COLOR_CLUT4;
354 dssmode = OMAP_DSS_COLOR_CLUT8;
357 dssmode = OMAP_DSS_COLOR_RGB12U;
360 dssmode = OMAP_DSS_COLOR_RGB16;
363 dssmode = OMAP_DSS_COLOR_RGB24P;
366 dssmode = OMAP_DSS_COLOR_RGB24U;
372 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
373 struct omapfb_colormode *m = &omapfb_colormodes[i];
374 if (dssmode == m->dssmode) {
375 assign_colormode_to_var(var, m);
384 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
386 int xres_min = OMAPFB_PLANE_XRES_MIN;
388 int yres_min = OMAPFB_PLANE_YRES_MIN;
391 /* XXX: some applications seem to set virtual res to 0. */
392 if (var->xres_virtual == 0)
393 var->xres_virtual = var->xres;
395 if (var->yres_virtual == 0)
396 var->yres_virtual = var->yres;
398 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
401 if (var->xres < xres_min)
402 var->xres = xres_min;
403 if (var->yres < yres_min)
404 var->yres = yres_min;
405 if (var->xres > xres_max)
406 var->xres = xres_max;
407 if (var->yres > yres_max)
408 var->yres = yres_max;
410 if (var->xres > var->xres_virtual)
411 var->xres = var->xres_virtual;
412 if (var->yres > var->yres_virtual)
413 var->yres = var->yres_virtual;
418 static void shrink_height(unsigned long max_frame_size,
419 struct fb_var_screeninfo *var)
421 DBG("can't fit FB into memory, reducing y\n");
422 var->yres_virtual = max_frame_size /
423 (var->xres_virtual * var->bits_per_pixel >> 3);
425 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
426 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
428 if (var->yres > var->yres_virtual)
429 var->yres = var->yres_virtual;
432 static void shrink_width(unsigned long max_frame_size,
433 struct fb_var_screeninfo *var)
435 DBG("can't fit FB into memory, reducing x\n");
436 var->xres_virtual = max_frame_size / var->yres_virtual /
437 (var->bits_per_pixel >> 3);
439 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
440 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
442 if (var->xres > var->xres_virtual)
443 var->xres = var->xres_virtual;
446 static int check_vrfb_fb_size(unsigned long region_size,
447 const struct fb_var_screeninfo *var)
449 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
450 var->yres_virtual, var->bits_per_pixel >> 3);
452 return min_phys_size > region_size ? -EINVAL : 0;
455 static int check_fb_size(const struct omapfb_info *ofbi,
456 struct fb_var_screeninfo *var)
458 unsigned long max_frame_size = ofbi->region->size;
459 int bytespp = var->bits_per_pixel >> 3;
460 unsigned long line_size = var->xres_virtual * bytespp;
462 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
463 /* One needs to check for both VRFB and OMAPFB limitations. */
464 if (check_vrfb_fb_size(max_frame_size, var))
465 shrink_height(omap_vrfb_max_height(
466 max_frame_size, var->xres_virtual, bytespp) *
469 if (check_vrfb_fb_size(max_frame_size, var)) {
470 DBG("cannot fit FB to memory\n");
477 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
479 if (line_size * var->yres_virtual > max_frame_size)
480 shrink_height(max_frame_size, var);
482 if (line_size * var->yres_virtual > max_frame_size) {
483 shrink_width(max_frame_size, var);
484 line_size = var->xres_virtual * bytespp;
487 if (line_size * var->yres_virtual > max_frame_size) {
488 DBG("cannot fit FB to memory\n");
496 * Consider if VRFB assisted rotation is in use and if the virtual space for
497 * the zero degree view needs to be mapped. The need for mapping also acts as
498 * the trigger for setting up the hardware on the context in question. This
499 * ensures that one does not attempt to access the virtual view before the
500 * hardware is serving the address translations.
502 static int setup_vrfb_rotation(struct fb_info *fbi)
504 struct omapfb_info *ofbi = FB2OFB(fbi);
505 struct omapfb2_mem_region *rg = ofbi->region;
506 struct vrfb *vrfb = &rg->vrfb;
507 struct fb_var_screeninfo *var = &fbi->var;
508 struct fb_fix_screeninfo *fix = &fbi->fix;
511 enum omap_color_mode mode;
515 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
518 DBG("setup_vrfb_rotation\n");
520 r = fb_mode_to_dss_mode(var, &mode);
524 bytespp = var->bits_per_pixel >> 3;
526 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
528 /* We need to reconfigure VRFB if the resolution changes, if yuv mode
529 * is enabled/disabled, or if bytes per pixel changes */
531 /* XXX we shouldn't allow this when framebuffer is mmapped */
535 if (yuv_mode != vrfb->yuv_mode)
537 else if (bytespp != vrfb->bytespp)
539 else if (vrfb->xres != var->xres_virtual ||
540 vrfb->yres != var->yres_virtual)
543 if (vrfb->vaddr[0] && reconf) {
544 fbi->screen_base = NULL;
547 iounmap(vrfb->vaddr[0]);
548 vrfb->vaddr[0] = NULL;
549 DBG("setup_vrfb_rotation: reset fb\n");
555 omap_vrfb_setup(&rg->vrfb, rg->paddr,
560 /* Now one can ioremap the 0 angle view */
561 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
565 /* used by open/write in fbmem.c */
566 fbi->screen_base = ofbi->region->vrfb.vaddr[0];
568 fix->smem_start = ofbi->region->vrfb.paddr[0];
570 switch (var->nonstd) {
571 case OMAPFB_COLOR_YUV422:
572 case OMAPFB_COLOR_YUY422:
574 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
578 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
582 fix->smem_len = var->yres_virtual * fix->line_length;
587 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
588 struct fb_var_screeninfo *var)
592 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
593 struct omapfb_colormode *mode = &omapfb_colormodes[i];
594 if (dssmode == mode->dssmode) {
595 assign_colormode_to_var(var, mode);
602 void set_fb_fix(struct fb_info *fbi)
604 struct fb_fix_screeninfo *fix = &fbi->fix;
605 struct fb_var_screeninfo *var = &fbi->var;
606 struct omapfb_info *ofbi = FB2OFB(fbi);
607 struct omapfb2_mem_region *rg = ofbi->region;
611 /* used by open/write in fbmem.c */
612 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
614 /* used by mmap in fbmem.c */
615 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
616 switch (var->nonstd) {
617 case OMAPFB_COLOR_YUV422:
618 case OMAPFB_COLOR_YUY422:
620 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
624 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
628 fix->smem_len = var->yres_virtual * fix->line_length;
631 (var->xres_virtual * var->bits_per_pixel) >> 3;
632 fix->smem_len = rg->size;
635 fix->smem_start = omapfb_get_region_paddr(ofbi);
637 fix->type = FB_TYPE_PACKED_PIXELS;
640 fix->visual = FB_VISUAL_PSEUDOCOLOR;
642 switch (var->bits_per_pixel) {
647 fix->visual = FB_VISUAL_TRUECOLOR;
648 /* 12bpp is stored in 16 bits */
654 fix->visual = FB_VISUAL_PSEUDOCOLOR;
659 fix->accel = FB_ACCEL_NONE;
665 /* check new var and possibly modify it to be ok */
666 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
668 struct omapfb_info *ofbi = FB2OFB(fbi);
669 struct omap_dss_device *display = fb2display(fbi);
670 enum omap_color_mode mode = 0;
674 DBG("check_fb_var %d\n", ofbi->id);
676 WARN_ON(!atomic_read(&ofbi->region->lock_count));
678 r = fb_mode_to_dss_mode(var, &mode);
680 DBG("cannot convert var to omap dss mode\n");
684 for (i = 0; i < ofbi->num_overlays; ++i) {
685 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
686 DBG("invalid mode\n");
694 if (check_fb_res_bounds(var))
697 /* When no memory is allocated ignore the size check */
698 if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
701 if (var->xres + var->xoffset > var->xres_virtual)
702 var->xoffset = var->xres_virtual - var->xres;
703 if (var->yres + var->yoffset > var->yres_virtual)
704 var->yoffset = var->yres_virtual - var->yres;
706 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
707 var->xres, var->yres,
708 var->xres_virtual, var->yres_virtual);
710 if (display && display->driver->get_dimensions) {
712 display->driver->get_dimensions(display, &w, &h);
713 var->width = DIV_ROUND_CLOSEST(w, 1000);
714 var->height = DIV_ROUND_CLOSEST(h, 1000);
722 if (display && display->driver->get_timings) {
723 struct omap_video_timings timings;
724 display->driver->get_timings(display, &timings);
726 /* pixclock in ps, the rest in pixclock */
727 var->pixclock = timings.pixel_clock != 0 ?
728 KHZ2PICOS(timings.pixel_clock) :
730 var->left_margin = timings.hbp;
731 var->right_margin = timings.hfp;
732 var->upper_margin = timings.vbp;
733 var->lower_margin = timings.vfp;
734 var->hsync_len = timings.hsw;
735 var->vsync_len = timings.vsw;
738 var->left_margin = 0;
739 var->right_margin = 0;
740 var->upper_margin = 0;
741 var->lower_margin = 0;
746 /* TODO: get these from panel->config */
747 var->vmode = FB_VMODE_NONINTERLACED;
754 * ---------------------------------------------------------------------------
755 * fbdev framework callbacks
756 * ---------------------------------------------------------------------------
758 static int omapfb_open(struct fb_info *fbi, int user)
763 static int omapfb_release(struct fb_info *fbi, int user)
768 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
769 const struct fb_fix_screeninfo *fix, int rotation)
773 offset = var->yoffset * fix->line_length +
774 var->xoffset * (var->bits_per_pixel >> 3);
779 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
780 const struct fb_fix_screeninfo *fix, int rotation)
784 if (rotation == FB_ROTATE_UD)
785 offset = (var->yres_virtual - var->yres) *
787 else if (rotation == FB_ROTATE_CW)
788 offset = (var->yres_virtual - var->yres) *
789 (var->bits_per_pixel >> 3);
793 if (rotation == FB_ROTATE_UR)
794 offset += var->yoffset * fix->line_length +
795 var->xoffset * (var->bits_per_pixel >> 3);
796 else if (rotation == FB_ROTATE_UD)
797 offset -= var->yoffset * fix->line_length +
798 var->xoffset * (var->bits_per_pixel >> 3);
799 else if (rotation == FB_ROTATE_CW)
800 offset -= var->xoffset * fix->line_length +
801 var->yoffset * (var->bits_per_pixel >> 3);
802 else if (rotation == FB_ROTATE_CCW)
803 offset += var->xoffset * fix->line_length +
804 var->yoffset * (var->bits_per_pixel >> 3);
809 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
810 const struct fb_var_screeninfo *var,
811 const struct fb_fix_screeninfo *fix,
812 int rotation, u32 *paddr)
817 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
818 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
820 data_start_p = omapfb_get_region_paddr(ofbi);
822 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
823 offset = calc_rotation_offset_vrfb(var, fix, rotation);
825 offset = calc_rotation_offset_dma(var, fix, rotation);
827 data_start_p += offset;
830 DBG("offset %d, %d = %d\n",
831 var->xoffset, var->yoffset, offset);
833 DBG("paddr %x\n", data_start_p);
835 *paddr = data_start_p;
838 /* setup overlay according to the fb */
839 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
840 u16 posx, u16 posy, u16 outw, u16 outh)
843 struct omapfb_info *ofbi = FB2OFB(fbi);
844 struct fb_var_screeninfo *var = &fbi->var;
845 struct fb_fix_screeninfo *fix = &fbi->fix;
846 enum omap_color_mode mode = 0;
847 u32 data_start_p = 0;
848 struct omap_overlay_info info;
852 int rotation = var->rotate;
855 WARN_ON(!atomic_read(&ofbi->region->lock_count));
857 for (i = 0; i < ofbi->num_overlays; i++) {
858 if (ovl != ofbi->overlays[i])
861 rotation = (rotation + ofbi->rotation[i]) % 4;
865 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
866 posx, posy, outw, outh);
868 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
876 if (ofbi->region->size)
877 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
879 r = fb_mode_to_dss_mode(var, &mode);
881 DBG("fb_mode_to_dss_mode failed");
885 switch (var->nonstd) {
886 case OMAPFB_COLOR_YUV422:
887 case OMAPFB_COLOR_YUY422:
888 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
889 screen_width = fix->line_length
890 / (var->bits_per_pixel >> 2);
894 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
898 ovl->get_overlay_info(ovl, &info);
900 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
903 mirror = ofbi->mirror;
905 info.paddr = data_start_p;
906 info.screen_width = screen_width;
909 info.color_mode = mode;
910 info.rotation_type = ofbi->rotation_type;
911 info.rotation = rotation;
912 info.mirror = mirror;
916 info.out_width = outw;
917 info.out_height = outh;
919 r = ovl->set_overlay_info(ovl, &info);
921 DBG("ovl->setup_overlay_info failed\n");
928 DBG("setup_overlay failed\n");
932 /* apply var to the overlay */
933 int omapfb_apply_changes(struct fb_info *fbi, int init)
936 struct omapfb_info *ofbi = FB2OFB(fbi);
937 struct fb_var_screeninfo *var = &fbi->var;
938 struct omap_overlay *ovl;
944 if (omapfb_test_pattern)
948 WARN_ON(!atomic_read(&ofbi->region->lock_count));
950 for (i = 0; i < ofbi->num_overlays; i++) {
951 ovl = ofbi->overlays[i];
953 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
955 if (ofbi->region->size == 0) {
956 /* the fb is not available. disable the overlay */
957 omapfb_overlay_enable(ovl, 0);
958 if (!init && ovl->manager)
959 ovl->manager->apply(ovl->manager);
963 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
964 int rotation = (var->rotate + ofbi->rotation[i]) % 4;
965 if (rotation == FB_ROTATE_CW ||
966 rotation == FB_ROTATE_CCW) {
974 outw = ovl->info.out_width;
975 outh = ovl->info.out_height;
982 posx = ovl->info.pos_x;
983 posy = ovl->info.pos_y;
986 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
990 if (!init && ovl->manager)
991 ovl->manager->apply(ovl->manager);
995 DBG("apply_changes failed\n");
999 /* checks var and eventually tweaks it to something supported,
1000 * DO NOT MODIFY PAR */
1001 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1003 struct omapfb_info *ofbi = FB2OFB(fbi);
1006 DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1008 omapfb_get_mem_region(ofbi->region);
1010 r = check_fb_var(fbi, var);
1012 omapfb_put_mem_region(ofbi->region);
1017 /* set the video mode according to info->var */
1018 static int omapfb_set_par(struct fb_info *fbi)
1020 struct omapfb_info *ofbi = FB2OFB(fbi);
1023 DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1025 omapfb_get_mem_region(ofbi->region);
1029 r = setup_vrfb_rotation(fbi);
1033 r = omapfb_apply_changes(fbi, 0);
1036 omapfb_put_mem_region(ofbi->region);
1041 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1042 struct fb_info *fbi)
1044 struct omapfb_info *ofbi = FB2OFB(fbi);
1045 struct fb_var_screeninfo new_var;
1048 DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1050 if (var->xoffset == fbi->var.xoffset &&
1051 var->yoffset == fbi->var.yoffset)
1055 new_var.xoffset = var->xoffset;
1056 new_var.yoffset = var->yoffset;
1060 omapfb_get_mem_region(ofbi->region);
1062 r = omapfb_apply_changes(fbi, 0);
1064 omapfb_put_mem_region(ofbi->region);
1069 static void mmap_user_open(struct vm_area_struct *vma)
1071 struct omapfb2_mem_region *rg = vma->vm_private_data;
1073 omapfb_get_mem_region(rg);
1074 atomic_inc(&rg->map_count);
1075 omapfb_put_mem_region(rg);
1078 static void mmap_user_close(struct vm_area_struct *vma)
1080 struct omapfb2_mem_region *rg = vma->vm_private_data;
1082 omapfb_get_mem_region(rg);
1083 atomic_dec(&rg->map_count);
1084 omapfb_put_mem_region(rg);
1087 static struct vm_operations_struct mmap_user_ops = {
1088 .open = mmap_user_open,
1089 .close = mmap_user_close,
1092 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1094 struct omapfb_info *ofbi = FB2OFB(fbi);
1095 struct fb_fix_screeninfo *fix = &fbi->fix;
1096 struct omapfb2_mem_region *rg;
1098 unsigned long start;
1102 if (vma->vm_end - vma->vm_start == 0)
1104 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1106 off = vma->vm_pgoff << PAGE_SHIFT;
1108 rg = omapfb_get_mem_region(ofbi->region);
1110 start = omapfb_get_region_paddr(ofbi);
1111 len = fix->smem_len;
1114 if ((vma->vm_end - vma->vm_start + off) > len)
1119 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1121 vma->vm_pgoff = off >> PAGE_SHIFT;
1122 vma->vm_flags |= VM_IO | VM_RESERVED;
1124 vma->vm_page_prot = pgprot_writethrough(vma->vm_page_prot);
1126 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1127 vma->vm_ops = &mmap_user_ops;
1128 vma->vm_private_data = rg;
1129 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1130 vma->vm_end - vma->vm_start,
1131 vma->vm_page_prot)) {
1136 /* vm_ops.open won't be called for mmap itself. */
1137 atomic_inc(&rg->map_count);
1139 omapfb_put_mem_region(rg);
1144 omapfb_put_mem_region(ofbi->region);
1149 /* Store a single color palette entry into a pseudo palette or the hardware
1150 * palette if one is available. For now we support only 16bpp and thus store
1151 * the entry only to the pseudo palette.
1153 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1154 u_int blue, u_int transp, int update_hw_pal)
1156 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1157 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1158 struct fb_var_screeninfo *var = &fbi->var;
1161 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1163 /*switch (plane->color_mode) {*/
1165 case OMAPFB_COLOR_YUV422:
1166 case OMAPFB_COLOR_YUV420:
1167 case OMAPFB_COLOR_YUY422:
1170 case OMAPFB_COLOR_CLUT_8BPP:
1171 case OMAPFB_COLOR_CLUT_4BPP:
1172 case OMAPFB_COLOR_CLUT_2BPP:
1173 case OMAPFB_COLOR_CLUT_1BPP:
1175 if (fbdev->ctrl->setcolreg)
1176 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1177 transp, update_hw_pal);
1182 case OMAPFB_COLOR_RGB565:
1183 case OMAPFB_COLOR_RGB444:
1184 case OMAPFB_COLOR_RGB24P:
1185 case OMAPFB_COLOR_RGB24U:
1191 pal = ((red >> (16 - var->red.length)) <<
1193 ((green >> (16 - var->green.length)) <<
1194 var->green.offset) |
1195 (blue >> (16 - var->blue.length));
1196 ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1205 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1206 u_int transp, struct fb_info *info)
1210 return _setcolreg(info, regno, red, green, blue, transp, 1);
1213 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1215 int count, index, r;
1216 u16 *red, *green, *blue, *transp;
1222 green = cmap->green;
1224 transp = cmap->transp;
1225 index = cmap->start;
1227 for (count = 0; count < cmap->len; count++) {
1230 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1231 count == cmap->len - 1);
1239 static int omapfb_blank(int blank, struct fb_info *fbi)
1241 struct omapfb_info *ofbi = FB2OFB(fbi);
1242 struct omapfb2_device *fbdev = ofbi->fbdev;
1243 struct omap_dss_device *display = fb2display(fbi);
1244 struct omapfb_display_data *d;
1252 d = get_display_data(fbdev, display);
1255 case FB_BLANK_UNBLANK:
1256 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1259 if (display->driver->resume)
1260 r = display->driver->resume(display);
1262 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1263 d->update_mode == OMAPFB_AUTO_UPDATE &&
1264 !d->auto_update_work_enabled)
1265 omapfb_start_auto_update(fbdev, display);
1269 case FB_BLANK_NORMAL:
1270 /* FB_BLANK_NORMAL could be implemented.
1271 * Needs DSS additions. */
1272 case FB_BLANK_VSYNC_SUSPEND:
1273 case FB_BLANK_HSYNC_SUSPEND:
1274 case FB_BLANK_POWERDOWN:
1275 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1278 if (d->auto_update_work_enabled)
1279 omapfb_stop_auto_update(fbdev, display);
1281 if (display->driver->suspend)
1282 r = display->driver->suspend(display);
1291 omapfb_unlock(fbdev);
1297 /* XXX fb_read and fb_write are needed for VRFB */
1298 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1299 size_t count, loff_t *ppos)
1301 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1302 /* XXX needed for VRFB */
1307 static struct fb_ops omapfb_ops = {
1308 .owner = THIS_MODULE,
1309 .fb_open = omapfb_open,
1310 .fb_release = omapfb_release,
1311 .fb_fillrect = cfb_fillrect,
1312 .fb_copyarea = cfb_copyarea,
1313 .fb_imageblit = cfb_imageblit,
1314 .fb_blank = omapfb_blank,
1315 .fb_ioctl = omapfb_ioctl,
1316 .fb_check_var = omapfb_check_var,
1317 .fb_set_par = omapfb_set_par,
1318 .fb_pan_display = omapfb_pan_display,
1319 .fb_mmap = omapfb_mmap,
1320 .fb_setcolreg = omapfb_setcolreg,
1321 .fb_setcmap = omapfb_setcmap,
1322 /*.fb_write = omapfb_write,*/
1325 static void omapfb_free_fbmem(struct fb_info *fbi)
1327 struct omapfb_info *ofbi = FB2OFB(fbi);
1328 struct omapfb2_device *fbdev = ofbi->fbdev;
1329 struct omapfb2_mem_region *rg;
1333 if (rg->token == NULL)
1336 WARN_ON(atomic_read(&rg->map_count));
1338 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1339 /* unmap the 0 angle rotation */
1340 if (rg->vrfb.vaddr[0]) {
1341 iounmap(rg->vrfb.vaddr[0]);
1342 rg->vrfb.vaddr[0] = NULL;
1345 omap_vrfb_release_ctx(&rg->vrfb);
1348 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1358 static void clear_fb_info(struct fb_info *fbi)
1360 memset(&fbi->var, 0, sizeof(fbi->var));
1361 memset(&fbi->fix, 0, sizeof(fbi->fix));
1362 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1365 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1369 DBG("free all fbmem\n");
1371 for (i = 0; i < fbdev->num_fbs; i++) {
1372 struct fb_info *fbi = fbdev->fbs[i];
1373 omapfb_free_fbmem(fbi);
1380 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1381 unsigned long paddr)
1383 struct omapfb_info *ofbi = FB2OFB(fbi);
1384 struct omapfb2_device *fbdev = ofbi->fbdev;
1385 struct omapfb2_mem_region *rg;
1387 DEFINE_DMA_ATTRS(attrs);
1388 dma_addr_t dma_handle;
1395 memset(&rg->vrfb, 0, sizeof rg->vrfb);
1401 size = PAGE_ALIGN(size);
1403 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
1405 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1406 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
1408 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1410 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1411 GFP_KERNEL, &attrs);
1413 if (token == NULL) {
1414 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1418 DBG("allocated VRAM paddr %lx, vaddr %p\n",
1419 (unsigned long)dma_handle, token);
1421 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1422 r = omap_vrfb_request_ctx(&rg->vrfb);
1424 dma_free_attrs(fbdev->dev, size, token, dma_handle,
1426 dev_err(fbdev->dev, "vrfb create ctx failed\n");
1433 rg->dma_handle = dma_handle;
1435 rg->paddr = (unsigned long)dma_handle;
1436 rg->vaddr = (void __iomem *)token;
1443 /* allocate fbmem using display resolution as reference */
1444 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1445 unsigned long paddr)
1447 struct omapfb_info *ofbi = FB2OFB(fbi);
1448 struct omapfb2_device *fbdev = ofbi->fbdev;
1449 struct omap_dss_device *display;
1452 display = fb2display(fbi);
1457 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1472 display->driver->get_resolution(display, &w, &h);
1474 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1475 size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1476 omap_vrfb_min_phys_size(h, w, bytespp));
1478 DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1479 w * h * bytespp, size);
1481 size = w * h * bytespp;
1488 return omapfb_alloc_fbmem(fbi, size, paddr);
1491 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1493 enum omap_color_mode mode;
1496 case OMAPFB_COLOR_RGB565:
1497 mode = OMAP_DSS_COLOR_RGB16;
1499 case OMAPFB_COLOR_YUV422:
1500 mode = OMAP_DSS_COLOR_YUV2;
1502 case OMAPFB_COLOR_CLUT_8BPP:
1503 mode = OMAP_DSS_COLOR_CLUT8;
1505 case OMAPFB_COLOR_CLUT_4BPP:
1506 mode = OMAP_DSS_COLOR_CLUT4;
1508 case OMAPFB_COLOR_CLUT_2BPP:
1509 mode = OMAP_DSS_COLOR_CLUT2;
1511 case OMAPFB_COLOR_CLUT_1BPP:
1512 mode = OMAP_DSS_COLOR_CLUT1;
1514 case OMAPFB_COLOR_RGB444:
1515 mode = OMAP_DSS_COLOR_RGB12U;
1517 case OMAPFB_COLOR_YUY422:
1518 mode = OMAP_DSS_COLOR_UYVY;
1520 case OMAPFB_COLOR_ARGB16:
1521 mode = OMAP_DSS_COLOR_ARGB16;
1523 case OMAPFB_COLOR_RGB24U:
1524 mode = OMAP_DSS_COLOR_RGB24U;
1526 case OMAPFB_COLOR_RGB24P:
1527 mode = OMAP_DSS_COLOR_RGB24P;
1529 case OMAPFB_COLOR_ARGB32:
1530 mode = OMAP_DSS_COLOR_ARGB32;
1532 case OMAPFB_COLOR_RGBA32:
1533 mode = OMAP_DSS_COLOR_RGBA32;
1535 case OMAPFB_COLOR_RGBX32:
1536 mode = OMAP_DSS_COLOR_RGBX32;
1545 static int omapfb_parse_vram_param(const char *param, int max_entries,
1546 unsigned long *sizes, unsigned long *paddrs)
1550 unsigned long paddr = 0;
1553 start = (char *)param;
1558 fbnum = simple_strtoul(p, &p, 10);
1566 if (fbnum >= max_entries)
1569 size = memparse(p + 1, &p);
1577 paddr = simple_strtoul(p + 1, &p, 16);
1585 "reserving memory at predefined address not supported\n");
1587 paddrs[fbnum] = paddr;
1588 sizes[fbnum] = size;
1604 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1607 unsigned long vram_sizes[10];
1608 unsigned long vram_paddrs[10];
1610 memset(&vram_sizes, 0, sizeof(vram_sizes));
1611 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1613 if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1614 vram_sizes, vram_paddrs)) {
1615 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1617 memset(&vram_sizes, 0, sizeof(vram_sizes));
1618 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1621 if (fbdev->dev->platform_data) {
1622 struct omapfb_platform_data *opd;
1623 opd = fbdev->dev->platform_data;
1624 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1625 if (!vram_sizes[i]) {
1627 unsigned long paddr;
1629 size = opd->mem_desc.region[i].size;
1630 paddr = opd->mem_desc.region[i].paddr;
1632 vram_sizes[i] = size;
1633 vram_paddrs[i] = paddr;
1638 for (i = 0; i < fbdev->num_fbs; i++) {
1639 /* allocate memory automatically only for fb0, or if
1640 * excplicitly defined with vram or plat data option */
1641 if (i == 0 || vram_sizes[i] != 0) {
1642 r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1643 vram_sizes[i], vram_paddrs[i]);
1650 for (i = 0; i < fbdev->num_fbs; i++) {
1651 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1652 struct omapfb2_mem_region *rg;
1655 DBG("region%d phys %08x virt %p size=%lu\n",
1665 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1667 struct omapfb_info *ofbi = FB2OFB(fbi);
1668 struct omapfb2_device *fbdev = ofbi->fbdev;
1669 struct omap_dss_device *display = fb2display(fbi);
1670 struct omapfb2_mem_region *rg = ofbi->region;
1671 unsigned long old_size = rg->size;
1672 unsigned long old_paddr = rg->paddr;
1673 int old_type = rg->type;
1676 if (type > OMAPFB_MEMTYPE_MAX)
1679 size = PAGE_ALIGN(size);
1681 if (old_size == size && old_type == type)
1684 if (display && display->driver->sync)
1685 display->driver->sync(display);
1687 omapfb_free_fbmem(fbi);
1694 r = omapfb_alloc_fbmem(fbi, size, 0);
1698 omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1706 if (old_size == size)
1709 if (old_size == 0) {
1710 DBG("initializing fb %d\n", ofbi->id);
1711 r = omapfb_fb_init(fbdev, fbi);
1713 DBG("omapfb_fb_init failed\n");
1716 r = omapfb_apply_changes(fbi, 1);
1718 DBG("omapfb_apply_changes failed\n");
1722 struct fb_var_screeninfo new_var;
1723 memcpy(&new_var, &fbi->var, sizeof(new_var));
1724 r = check_fb_var(fbi, &new_var);
1727 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1729 r = setup_vrfb_rotation(fbi);
1736 omapfb_free_fbmem(fbi);
1741 static void omapfb_auto_update_work(struct work_struct *work)
1743 struct omap_dss_device *dssdev;
1744 struct omap_dss_driver *dssdrv;
1745 struct omapfb_display_data *d;
1748 struct omapfb2_device *fbdev;
1750 d = container_of(work, struct omapfb_display_data,
1751 auto_update_work.work);
1754 dssdrv = dssdev->driver;
1757 if (!dssdrv || !dssdrv->update)
1761 dssdrv->sync(dssdev);
1763 dssdrv->get_resolution(dssdev, &w, &h);
1764 dssdrv->update(dssdev, 0, 0, w, h);
1766 freq = auto_update_freq;
1769 queue_delayed_work(fbdev->auto_update_wq,
1770 &d->auto_update_work, HZ / freq);
1773 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1774 struct omap_dss_device *display)
1776 struct omapfb_display_data *d;
1778 if (fbdev->auto_update_wq == NULL) {
1779 struct workqueue_struct *wq;
1781 wq = create_singlethread_workqueue("omapfb_auto_update");
1784 dev_err(fbdev->dev, "Failed to create workqueue for "
1789 fbdev->auto_update_wq = wq;
1792 d = get_display_data(fbdev, display);
1794 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1796 d->auto_update_work_enabled = true;
1798 omapfb_auto_update_work(&d->auto_update_work.work);
1801 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1802 struct omap_dss_device *display)
1804 struct omapfb_display_data *d;
1806 d = get_display_data(fbdev, display);
1808 cancel_delayed_work_sync(&d->auto_update_work);
1810 d->auto_update_work_enabled = false;
1813 /* initialize fb_info, var, fix to something sane based on the display */
1814 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1816 struct fb_var_screeninfo *var = &fbi->var;
1817 struct omap_dss_device *display = fb2display(fbi);
1818 struct omapfb_info *ofbi = FB2OFB(fbi);
1821 fbi->fbops = &omapfb_ops;
1822 fbi->flags = FBINFO_FLAG_DEFAULT;
1823 fbi->pseudo_palette = fbdev->pseudo_palette;
1825 if (ofbi->region->size == 0) {
1831 var->bits_per_pixel = 0;
1833 var->rotate = def_rotate;
1836 * Check if there is a default color format set in the board file,
1837 * and use this format instead the default deducted from the
1840 if (fbdev->dev->platform_data) {
1841 struct omapfb_platform_data *opd;
1844 opd = fbdev->dev->platform_data;
1845 if (opd->mem_desc.region[id].format_used) {
1846 enum omap_color_mode mode;
1847 enum omapfb_color_format format;
1849 format = opd->mem_desc.region[id].format;
1850 mode = fb_format_to_dss_mode(format);
1855 r = dss_mode_to_fb_mode(mode, var);
1863 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1865 display->driver->get_resolution(display, &w, &h);
1867 if (rotation == FB_ROTATE_CW ||
1868 rotation == FB_ROTATE_CCW) {
1876 var->xres_virtual = var->xres;
1877 var->yres_virtual = var->yres;
1879 if (!var->bits_per_pixel) {
1880 switch (omapfb_get_recommended_bpp(fbdev, display)) {
1882 var->bits_per_pixel = 16;
1885 var->bits_per_pixel = 32;
1888 dev_err(fbdev->dev, "illegal display "
1894 /* if there's no display, let's just guess some basic values */
1897 var->xres_virtual = var->xres;
1898 var->yres_virtual = var->yres;
1899 if (!var->bits_per_pixel)
1900 var->bits_per_pixel = 16;
1903 r = check_fb_var(fbi, var);
1908 r = setup_vrfb_rotation(fbi);
1912 r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1914 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1920 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1922 fb_dealloc_cmap(&fbi->cmap);
1926 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1930 DBG("free_resources\n");
1935 for (i = 0; i < fbdev->num_fbs; i++)
1936 unregister_framebuffer(fbdev->fbs[i]);
1938 /* free the reserved fbmem */
1939 omapfb_free_all_fbmem(fbdev);
1941 for (i = 0; i < fbdev->num_fbs; i++) {
1942 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1943 framebuffer_release(fbdev->fbs[i]);
1946 for (i = 0; i < fbdev->num_displays; i++) {
1947 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1949 if (fbdev->displays[i].auto_update_work_enabled)
1950 omapfb_stop_auto_update(fbdev, dssdev);
1952 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1953 dssdev->driver->disable(dssdev);
1955 omap_dss_put_device(dssdev);
1958 if (fbdev->auto_update_wq != NULL) {
1959 flush_workqueue(fbdev->auto_update_wq);
1960 destroy_workqueue(fbdev->auto_update_wq);
1961 fbdev->auto_update_wq = NULL;
1964 dev_set_drvdata(fbdev->dev, NULL);
1968 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1974 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1976 /* allocate fb_infos */
1977 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1978 struct fb_info *fbi;
1979 struct omapfb_info *ofbi;
1981 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1986 "unable to allocate memory for plane info\n");
1992 fbdev->fbs[i] = fbi;
1995 ofbi->fbdev = fbdev;
1998 ofbi->region = &fbdev->regions[i];
1999 ofbi->region->id = i;
2000 init_rwsem(&ofbi->region->lock);
2002 /* assign these early, so that fb alloc can use them */
2003 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
2005 ofbi->mirror = def_mirror;
2010 DBG("fb_infos allocated\n");
2012 /* assign overlays for the fbs */
2013 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
2014 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
2016 ofbi->overlays[0] = fbdev->overlays[i];
2017 ofbi->num_overlays = 1;
2020 /* allocate fb memories */
2021 r = omapfb_allocate_all_fbs(fbdev);
2023 dev_err(fbdev->dev, "failed to allocate fbmem\n");
2027 DBG("fbmems allocated\n");
2029 /* setup fb_infos */
2030 for (i = 0; i < fbdev->num_fbs; i++) {
2031 struct fb_info *fbi = fbdev->fbs[i];
2032 struct omapfb_info *ofbi = FB2OFB(fbi);
2034 omapfb_get_mem_region(ofbi->region);
2035 r = omapfb_fb_init(fbdev, fbi);
2036 omapfb_put_mem_region(ofbi->region);
2039 dev_err(fbdev->dev, "failed to setup fb_info\n");
2044 DBG("fb_infos initialized\n");
2046 for (i = 0; i < fbdev->num_fbs; i++) {
2047 r = register_framebuffer(fbdev->fbs[i]);
2050 "registering framebuffer %d failed\n", i);
2055 DBG("framebuffers registered\n");
2057 for (i = 0; i < fbdev->num_fbs; i++) {
2058 struct fb_info *fbi = fbdev->fbs[i];
2059 struct omapfb_info *ofbi = FB2OFB(fbi);
2061 omapfb_get_mem_region(ofbi->region);
2062 r = omapfb_apply_changes(fbi, 1);
2063 omapfb_put_mem_region(ofbi->region);
2066 dev_err(fbdev->dev, "failed to change mode\n");
2072 if (fbdev->num_fbs > 0) {
2073 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2075 if (ofbi->num_overlays > 0) {
2076 struct omap_overlay *ovl = ofbi->overlays[0];
2078 r = omapfb_overlay_enable(ovl, 1);
2082 "failed to enable overlay\n");
2088 DBG("create_framebuffers done\n");
2093 static int omapfb_mode_to_timings(const char *mode_str,
2094 struct omap_video_timings *timings, u8 *bpp)
2096 struct fb_info *fbi;
2097 struct fb_var_screeninfo *var;
2098 struct fb_ops *fbops;
2101 #ifdef CONFIG_OMAP2_DSS_VENC
2102 if (strcmp(mode_str, "pal") == 0) {
2103 *timings = omap_dss_pal_timings;
2106 } else if (strcmp(mode_str, "ntsc") == 0) {
2107 *timings = omap_dss_ntsc_timings;
2113 /* this is quite a hack, but I wanted to use the modedb and for
2114 * that we need fb_info and var, so we create dummy ones */
2121 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2127 var = kzalloc(sizeof(*var), GFP_KERNEL);
2133 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2134 if (fbops == NULL) {
2141 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2147 timings->pixel_clock = PICOS2KHZ(var->pixclock);
2148 timings->hbp = var->left_margin;
2149 timings->hfp = var->right_margin;
2150 timings->vbp = var->upper_margin;
2151 timings->vfp = var->lower_margin;
2152 timings->hsw = var->hsync_len;
2153 timings->vsw = var->vsync_len;
2154 timings->x_res = var->xres;
2155 timings->y_res = var->yres;
2157 switch (var->bits_per_pixel) {
2178 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2179 struct omap_dss_device *display, char *mode_str)
2183 struct omap_video_timings timings, temp_timings;
2184 struct omapfb_display_data *d;
2186 r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2190 d = get_display_data(fbdev, display);
2191 d->bpp_override = bpp;
2193 if (display->driver->check_timings) {
2194 r = display->driver->check_timings(display, &timings);
2198 /* If check_timings is not present compare xres and yres */
2199 if (display->driver->get_timings) {
2200 display->driver->get_timings(display, &temp_timings);
2202 if (temp_timings.x_res != timings.x_res ||
2203 temp_timings.y_res != timings.y_res)
2208 if (display->driver->set_timings)
2209 display->driver->set_timings(display, &timings);
2214 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2215 struct omap_dss_device *dssdev)
2217 struct omapfb_display_data *d;
2219 BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2221 d = get_display_data(fbdev, dssdev);
2223 if (d->bpp_override != 0)
2224 return d->bpp_override;
2226 return dssdev->driver->get_recommended_bpp(dssdev);
2229 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2231 char *str, *options, *this_opt;
2234 str = kstrdup(def_mode, GFP_KERNEL);
2239 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2240 char *p, *display_str, *mode_str;
2241 struct omap_dss_device *display;
2244 p = strchr(this_opt, ':');
2251 display_str = this_opt;
2255 for (i = 0; i < fbdev->num_displays; ++i) {
2256 if (strcmp(fbdev->displays[i].dssdev->name,
2257 display_str) == 0) {
2258 display = fbdev->displays[i].dssdev;
2268 r = omapfb_set_def_mode(fbdev, display, mode_str);
2278 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2279 struct omap_video_timings *t)
2283 t->pixel_clock = PICOS2KHZ(m->pixclock);
2284 t->hsw = m->hsync_len;
2285 t->hfp = m->right_margin;
2286 t->hbp = m->left_margin;
2287 t->vsw = m->vsync_len;
2288 t->vfp = m->lower_margin;
2289 t->vbp = m->upper_margin;
2292 static int omapfb_find_best_mode(struct omap_dss_device *display,
2293 struct omap_video_timings *timings)
2295 struct fb_monspecs *specs;
2297 int r, i, best_xres, best_idx, len;
2299 if (!display->driver->read_edid)
2303 edid = kmalloc(len, GFP_KERNEL);
2305 r = display->driver->read_edid(display, edid, len);
2309 specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2311 fb_edid_to_monspecs(edid, specs);
2314 fb_edid_add_monspecs(edid + 0x80, specs);
2319 for (i = 0; i < specs->modedb_len; ++i) {
2320 struct fb_videomode *m;
2321 struct omap_video_timings t;
2323 m = &specs->modedb[i];
2325 if (m->pixclock == 0)
2328 /* skip repeated pixel modes */
2329 if (m->xres == 2880 || m->xres == 1440)
2332 fb_videomode_to_omap_timings(m, &t);
2334 r = display->driver->check_timings(display, &t);
2335 if (r == 0 && best_xres < m->xres) {
2336 best_xres = m->xres;
2341 if (best_xres == 0) {
2346 fb_videomode_to_omap_timings(&specs->modedb[best_idx], timings);
2351 fb_destroy_modedb(specs->modedb);
2359 static int omapfb_init_display(struct omapfb2_device *fbdev,
2360 struct omap_dss_device *dssdev)
2362 struct omap_dss_driver *dssdrv = dssdev->driver;
2363 struct omapfb_display_data *d;
2366 r = dssdrv->enable(dssdev);
2368 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2373 d = get_display_data(fbdev, dssdev);
2377 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2381 omapfb_start_auto_update(fbdev, dssdev);
2382 d->update_mode = OMAPFB_AUTO_UPDATE;
2384 d->update_mode = OMAPFB_MANUAL_UPDATE;
2387 if (dssdrv->enable_te) {
2388 r = dssdrv->enable_te(dssdev, 1);
2390 dev_err(fbdev->dev, "Failed to set TE\n");
2395 dssdrv->get_resolution(dssdev, &w, &h);
2396 r = dssdrv->update(dssdev, 0, 0, w, h);
2399 "Failed to update display\n");
2403 d->update_mode = OMAPFB_AUTO_UPDATE;
2409 static int omapfb_probe(struct platform_device *pdev)
2411 struct omapfb2_device *fbdev = NULL;
2414 struct omap_overlay *ovl;
2415 struct omap_dss_device *def_display;
2416 struct omap_dss_device *dssdev;
2418 DBG("omapfb_probe\n");
2420 if (pdev->num_resources != 0) {
2421 dev_err(&pdev->dev, "probed for an unknown device\n");
2426 fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2427 if (fbdev == NULL) {
2432 /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2433 * available for OMAP2 and OMAP3
2435 if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2437 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2438 "ignoring the module parameter vrfb=y\n");
2442 mutex_init(&fbdev->mtx);
2444 fbdev->dev = &pdev->dev;
2445 platform_set_drvdata(pdev, fbdev);
2448 fbdev->num_displays = 0;
2450 for_each_dss_dev(dssdev) {
2451 struct omapfb_display_data *d;
2453 omap_dss_get_device(dssdev);
2455 if (!dssdev->driver) {
2456 dev_warn(&pdev->dev, "no driver for display: %s\n",
2458 omap_dss_put_device(dssdev);
2462 d = &fbdev->displays[fbdev->num_displays++];
2464 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2465 d->update_mode = OMAPFB_MANUAL_UPDATE;
2467 d->update_mode = OMAPFB_AUTO_UPDATE;
2473 if (fbdev->num_displays == 0) {
2474 dev_err(&pdev->dev, "no displays\n");
2479 fbdev->num_overlays = omap_dss_get_num_overlays();
2480 for (i = 0; i < fbdev->num_overlays; i++)
2481 fbdev->overlays[i] = omap_dss_get_overlay(i);
2483 fbdev->num_managers = omap_dss_get_num_overlay_managers();
2484 for (i = 0; i < fbdev->num_managers; i++)
2485 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2487 /* gfx overlay should be the default one. find a display
2488 * connected to that, and use it as default display */
2489 ovl = omap_dss_get_overlay(0);
2490 if (ovl->manager && ovl->manager->device) {
2491 def_display = ovl->manager->device;
2493 dev_warn(&pdev->dev, "cannot find default display\n");
2497 if (def_mode && strlen(def_mode) > 0) {
2498 if (omapfb_parse_def_modes(fbdev))
2499 dev_warn(&pdev->dev, "cannot parse default modes\n");
2500 } else if (def_display && def_display->driver->set_timings &&
2501 def_display->driver->check_timings) {
2502 struct omap_video_timings t;
2504 r = omapfb_find_best_mode(def_display, &t);
2507 def_display->driver->set_timings(def_display, &t);
2510 r = omapfb_create_framebuffers(fbdev);
2514 for (i = 0; i < fbdev->num_managers; i++) {
2515 struct omap_overlay_manager *mgr;
2516 mgr = fbdev->managers[i];
2517 r = mgr->apply(mgr);
2519 dev_warn(fbdev->dev, "failed to apply dispc config\n");
2522 DBG("mgr->apply'ed\n");
2525 r = omapfb_init_display(fbdev, def_display);
2528 "failed to initialize default "
2534 DBG("create sysfs for fbs\n");
2535 r = omapfb_create_sysfs(fbdev);
2537 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2544 omapfb_free_resources(fbdev);
2546 dev_err(&pdev->dev, "failed to setup omapfb\n");
2550 static int omapfb_remove(struct platform_device *pdev)
2552 struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2554 /* FIXME: wait till completion of pending events */
2556 omapfb_remove_sysfs(fbdev);
2558 omapfb_free_resources(fbdev);
2563 static struct platform_driver omapfb_driver = {
2564 .probe = omapfb_probe,
2565 .remove = omapfb_remove,
2568 .owner = THIS_MODULE,
2572 static int __init omapfb_init(void)
2574 DBG("omapfb_init\n");
2576 if (platform_driver_register(&omapfb_driver)) {
2577 printk(KERN_ERR "failed to register omapfb driver\n");
2584 static void __exit omapfb_exit(void)
2586 DBG("omapfb_exit\n");
2587 platform_driver_unregister(&omapfb_driver);
2590 module_param_named(mode, def_mode, charp, 0);
2591 module_param_named(vram, def_vram, charp, 0);
2592 module_param_named(rotate, def_rotate, int, 0);
2593 module_param_named(vrfb, def_vrfb, bool, 0);
2594 module_param_named(mirror, def_mirror, bool, 0);
2595 module_param_named(vram_cache, def_vram_cache, bool, 0644);
2597 /* late_initcall to let panel/ctrl drivers loaded first.
2598 * I guess better option would be a more dynamic approach,
2599 * so that omapfb reacts to new panels when they are loaded */
2600 late_initcall(omapfb_init);
2601 /*module_init(omapfb_init);*/
2602 module_exit(omapfb_exit);
2604 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2605 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2606 MODULE_LICENSE("GPL v2");