1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Framebuffer driver for TI OMAP boards
5 * Copyright (C) 2004 Nokia Corporation
6 * Author: Imre Deak <imre.deak@nokia.com>
9 * Alex McMains <aam@ridgerun.com> - Original driver
10 * Juha Yrjola <juha.yrjola@nokia.com> - Original driver and improvements
11 * Dirk Behme <dirk.behme@de.bosch.com> - changes for 2.6 kernel API
12 * Texas Instruments - H3 support
14 #include <linux/platform_device.h>
16 #include <linux/slab.h>
17 #include <linux/uaccess.h>
18 #include <linux/module.h>
20 #include <linux/omap-dma.h>
22 #include <mach/hardware.h>
27 #define MODULE_NAME "omapfb"
29 static unsigned int def_accel;
30 static unsigned long def_vram[OMAPFB_PLANE_NUM];
31 static unsigned int def_vram_cnt;
32 static unsigned long def_vxres;
33 static unsigned long def_vyres;
34 static unsigned int def_rotate;
35 static unsigned int def_mirror;
37 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
38 static bool manual_update = 1;
40 static bool manual_update;
43 static struct platform_device *fbdev_pdev;
44 static struct lcd_panel *fbdev_panel;
45 static struct omapfb_device *omapfb_dev;
47 struct caps_table_struct {
52 static const struct caps_table_struct ctrl_caps[] = {
53 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
54 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" },
55 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
56 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" },
57 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
58 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" },
59 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" },
60 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" },
61 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
64 static const struct caps_table_struct color_caps[] = {
65 { 1 << OMAPFB_COLOR_RGB565, "RGB565", },
66 { 1 << OMAPFB_COLOR_YUV422, "YUV422", },
67 { 1 << OMAPFB_COLOR_YUV420, "YUV420", },
68 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", },
69 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", },
70 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", },
71 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", },
72 { 1 << OMAPFB_COLOR_RGB444, "RGB444", },
73 { 1 << OMAPFB_COLOR_YUY422, "YUY422", },
76 static void omapdss_release(struct device *dev)
80 /* dummy device for clocks */
81 static struct platform_device omapdss_device = {
82 .name = "omapdss_dss",
85 .release = omapdss_release,
90 * ---------------------------------------------------------------------------
92 * ---------------------------------------------------------------------------
94 extern struct lcd_ctrl hwa742_ctrl;
96 static const struct lcd_ctrl *ctrls[] = {
99 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
104 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
105 extern struct lcd_ctrl_extif omap1_ext_if;
108 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
110 mutex_lock(&fbdev->rqueue_mutex);
113 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
115 mutex_unlock(&fbdev->rqueue_mutex);
119 * ---------------------------------------------------------------------------
120 * LCD controller and LCD DMA
121 * ---------------------------------------------------------------------------
124 * Allocate resources needed for LCD controller and LCD DMA operations. Video
125 * memory is allocated from system memory according to the virtual display
126 * size, except if a bigger memory size is specified explicitly as a kernel
129 static int ctrl_init(struct omapfb_device *fbdev)
134 /* kernel/module vram parameters override boot tags/board config */
136 for (i = 0; i < def_vram_cnt; i++)
137 fbdev->mem_desc.region[i].size =
138 PAGE_ALIGN(def_vram[i]);
139 fbdev->mem_desc.region_cnt = i;
142 if (!fbdev->mem_desc.region_cnt) {
143 struct lcd_panel *panel = fbdev->panel;
145 int bpp = panel->bpp;
147 /* 12 bpp is packed in 16 bits */
150 def_size = def_vxres * def_vyres * bpp / 8;
151 fbdev->mem_desc.region_cnt = 1;
152 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
154 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
156 dev_err(fbdev->dev, "controller initialization failed (%d)\n",
162 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
163 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
165 fbdev->mem_desc.region[i].paddr,
166 fbdev->mem_desc.region[i].vaddr,
167 fbdev->mem_desc.region[i].size);
173 static void ctrl_cleanup(struct omapfb_device *fbdev)
175 fbdev->ctrl->cleanup();
178 /* Must be called with fbdev->rqueue_mutex held. */
179 static int ctrl_change_mode(struct fb_info *fbi)
182 unsigned long offset;
183 struct omapfb_plane_struct *plane = fbi->par;
184 struct omapfb_device *fbdev = plane->fbdev;
185 struct fb_var_screeninfo *var = &fbi->var;
187 offset = var->yoffset * fbi->fix.line_length +
188 var->xoffset * var->bits_per_pixel / 8;
190 if (fbdev->ctrl->sync)
192 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
193 offset, var->xres_virtual,
194 plane->info.pos_x, plane->info.pos_y,
195 var->xres, var->yres, plane->color_mode);
199 if (fbdev->ctrl->set_rotate != NULL) {
200 r = fbdev->ctrl->set_rotate(var->rotate);
205 if (fbdev->ctrl->set_scale != NULL)
206 r = fbdev->ctrl->set_scale(plane->idx,
207 var->xres, var->yres,
208 plane->info.out_width,
209 plane->info.out_height);
215 * ---------------------------------------------------------------------------
216 * fbdev framework callbacks and the ioctl interface
217 * ---------------------------------------------------------------------------
219 /* Called each time the omapfb device is opened */
220 static int omapfb_open(struct fb_info *info, int user)
225 static void omapfb_sync(struct fb_info *info);
227 /* Called when the omapfb device is closed. We make sure that any pending
228 * gfx DMA operations are ended, before we return. */
229 static int omapfb_release(struct fb_info *info, int user)
235 /* Store a single color palette entry into a pseudo palette or the hardware
236 * palette if one is available. For now we support only 16bpp and thus store
237 * the entry only to the pseudo palette.
239 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
240 u_int blue, u_int transp, int update_hw_pal)
242 struct omapfb_plane_struct *plane = info->par;
243 struct omapfb_device *fbdev = plane->fbdev;
244 struct fb_var_screeninfo *var = &info->var;
247 switch (plane->color_mode) {
248 case OMAPFB_COLOR_YUV422:
249 case OMAPFB_COLOR_YUV420:
250 case OMAPFB_COLOR_YUY422:
253 case OMAPFB_COLOR_CLUT_8BPP:
254 case OMAPFB_COLOR_CLUT_4BPP:
255 case OMAPFB_COLOR_CLUT_2BPP:
256 case OMAPFB_COLOR_CLUT_1BPP:
257 if (fbdev->ctrl->setcolreg)
258 r = fbdev->ctrl->setcolreg(regno, red, green, blue,
259 transp, update_hw_pal);
261 case OMAPFB_COLOR_RGB565:
262 case OMAPFB_COLOR_RGB444:
268 pal = ((red >> (16 - var->red.length)) <<
270 ((green >> (16 - var->green.length)) <<
272 (blue >> (16 - var->blue.length));
273 ((u32 *)(info->pseudo_palette))[regno] = pal;
282 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
283 u_int transp, struct fb_info *info)
285 return _setcolreg(info, regno, red, green, blue, transp, 1);
288 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
291 u16 *red, *green, *blue, *transp;
297 transp = cmap->transp;
300 for (count = 0; count < cmap->len; count++) {
303 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
304 count == cmap->len - 1);
312 static int omapfb_update_full_screen(struct fb_info *fbi);
314 static int omapfb_blank(int blank, struct fb_info *fbi)
316 struct omapfb_plane_struct *plane = fbi->par;
317 struct omapfb_device *fbdev = plane->fbdev;
321 omapfb_rqueue_lock(fbdev);
323 case FB_BLANK_UNBLANK:
324 if (fbdev->state == OMAPFB_SUSPENDED) {
325 if (fbdev->ctrl->resume)
326 fbdev->ctrl->resume();
327 if (fbdev->panel->enable)
328 fbdev->panel->enable(fbdev->panel);
329 fbdev->state = OMAPFB_ACTIVE;
330 if (fbdev->ctrl->get_update_mode() ==
331 OMAPFB_MANUAL_UPDATE)
335 case FB_BLANK_POWERDOWN:
336 if (fbdev->state == OMAPFB_ACTIVE) {
337 if (fbdev->panel->disable)
338 fbdev->panel->disable(fbdev->panel);
339 if (fbdev->ctrl->suspend)
340 fbdev->ctrl->suspend();
341 fbdev->state = OMAPFB_SUSPENDED;
347 omapfb_rqueue_unlock(fbdev);
349 if (r == 0 && do_update)
350 r = omapfb_update_full_screen(fbi);
355 static void omapfb_sync(struct fb_info *fbi)
357 struct omapfb_plane_struct *plane = fbi->par;
358 struct omapfb_device *fbdev = plane->fbdev;
360 omapfb_rqueue_lock(fbdev);
361 if (fbdev->ctrl->sync)
363 omapfb_rqueue_unlock(fbdev);
367 * Set fb_info.fix fields and also updates fbdev.
368 * When calling this fb_info.var must be set up already.
370 static void set_fb_fix(struct fb_info *fbi, int from_init)
372 struct fb_fix_screeninfo *fix = &fbi->fix;
373 struct fb_var_screeninfo *var = &fbi->var;
374 struct omapfb_plane_struct *plane = fbi->par;
375 struct omapfb_mem_region *rg;
378 rg = &plane->fbdev->mem_desc.region[plane->idx];
379 fbi->screen_base = rg->vaddr;
382 mutex_lock(&fbi->mm_lock);
383 fix->smem_start = rg->paddr;
384 fix->smem_len = rg->size;
385 mutex_unlock(&fbi->mm_lock);
387 fix->smem_start = rg->paddr;
388 fix->smem_len = rg->size;
391 fix->type = FB_TYPE_PACKED_PIXELS;
392 bpp = var->bits_per_pixel;
394 fix->visual = FB_VISUAL_PSEUDOCOLOR;
395 else switch (var->bits_per_pixel) {
398 fix->visual = FB_VISUAL_TRUECOLOR;
399 /* 12bpp is stored in 16 bits */
406 fix->visual = FB_VISUAL_PSEUDOCOLOR;
409 fix->accel = FB_ACCEL_OMAP1610;
410 fix->line_length = var->xres_virtual * bpp / 8;
413 static int set_color_mode(struct omapfb_plane_struct *plane,
414 struct fb_var_screeninfo *var)
416 switch (var->nonstd) {
419 case OMAPFB_COLOR_YUV422:
420 var->bits_per_pixel = 16;
421 plane->color_mode = var->nonstd;
423 case OMAPFB_COLOR_YUV420:
424 var->bits_per_pixel = 12;
425 plane->color_mode = var->nonstd;
427 case OMAPFB_COLOR_YUY422:
428 var->bits_per_pixel = 16;
429 plane->color_mode = var->nonstd;
435 switch (var->bits_per_pixel) {
437 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
440 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
443 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
446 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
449 var->bits_per_pixel = 16;
451 if (plane->fbdev->panel->bpp == 12)
452 plane->color_mode = OMAPFB_COLOR_RGB444;
454 plane->color_mode = OMAPFB_COLOR_RGB565;
462 * Check the values in var against our capabilities and in case of out of
463 * bound values try to adjust them.
465 static int set_fb_var(struct fb_info *fbi,
466 struct fb_var_screeninfo *var)
469 unsigned long max_frame_size;
470 unsigned long line_size;
471 int xres_min, xres_max;
472 int yres_min, yres_max;
473 struct omapfb_plane_struct *plane = fbi->par;
474 struct omapfb_device *fbdev = plane->fbdev;
475 struct lcd_panel *panel = fbdev->panel;
477 if (set_color_mode(plane, var) < 0)
480 bpp = var->bits_per_pixel;
481 if (plane->color_mode == OMAPFB_COLOR_RGB444)
484 switch (var->rotate) {
487 xres_min = OMAPFB_PLANE_XRES_MIN;
488 xres_max = panel->x_res;
489 yres_min = OMAPFB_PLANE_YRES_MIN;
490 yres_max = panel->y_res;
491 if (cpu_is_omap15xx()) {
492 var->xres = panel->x_res;
493 var->yres = panel->y_res;
498 xres_min = OMAPFB_PLANE_YRES_MIN;
499 xres_max = panel->y_res;
500 yres_min = OMAPFB_PLANE_XRES_MIN;
501 yres_max = panel->x_res;
502 if (cpu_is_omap15xx()) {
503 var->xres = panel->y_res;
504 var->yres = panel->x_res;
511 if (var->xres < xres_min)
512 var->xres = xres_min;
513 if (var->yres < yres_min)
514 var->yres = yres_min;
515 if (var->xres > xres_max)
516 var->xres = xres_max;
517 if (var->yres > yres_max)
518 var->yres = yres_max;
520 if (var->xres_virtual < var->xres)
521 var->xres_virtual = var->xres;
522 if (var->yres_virtual < var->yres)
523 var->yres_virtual = var->yres;
524 max_frame_size = fbdev->mem_desc.region[plane->idx].size;
525 line_size = var->xres_virtual * bpp / 8;
526 if (line_size * var->yres_virtual > max_frame_size) {
527 /* Try to keep yres_virtual first */
528 line_size = max_frame_size / var->yres_virtual;
529 var->xres_virtual = line_size * 8 / bpp;
530 if (var->xres_virtual < var->xres) {
531 /* Still doesn't fit. Shrink yres_virtual too */
532 var->xres_virtual = var->xres;
533 line_size = var->xres * bpp / 8;
534 var->yres_virtual = max_frame_size / line_size;
536 /* Recheck this, as the virtual size changed. */
537 if (var->xres_virtual < var->xres)
538 var->xres = var->xres_virtual;
539 if (var->yres_virtual < var->yres)
540 var->yres = var->yres_virtual;
541 if (var->xres < xres_min || var->yres < yres_min)
544 if (var->xres + var->xoffset > var->xres_virtual)
545 var->xoffset = var->xres_virtual - var->xres;
546 if (var->yres + var->yoffset > var->yres_virtual)
547 var->yoffset = var->yres_virtual - var->yres;
549 if (plane->color_mode == OMAPFB_COLOR_RGB444) {
550 var->red.offset = 8; var->red.length = 4;
551 var->red.msb_right = 0;
552 var->green.offset = 4; var->green.length = 4;
553 var->green.msb_right = 0;
554 var->blue.offset = 0; var->blue.length = 4;
555 var->blue.msb_right = 0;
557 var->red.offset = 11; var->red.length = 5;
558 var->red.msb_right = 0;
559 var->green.offset = 5; var->green.length = 6;
560 var->green.msb_right = 0;
561 var->blue.offset = 0; var->blue.length = 5;
562 var->blue.msb_right = 0;
569 /* pixclock in ps, the rest in pixclock */
570 var->pixclock = 10000000 / (panel->pixel_clock / 100);
571 var->left_margin = panel->hfp;
572 var->right_margin = panel->hbp;
573 var->upper_margin = panel->vfp;
574 var->lower_margin = panel->vbp;
575 var->hsync_len = panel->hsw;
576 var->vsync_len = panel->vsw;
578 /* TODO: get these from panel->config */
579 var->vmode = FB_VMODE_NONINTERLACED;
587 * Set new x,y offsets in the virtual display for the visible area and switch
590 static int omapfb_pan_display(struct fb_var_screeninfo *var,
593 struct omapfb_plane_struct *plane = fbi->par;
594 struct omapfb_device *fbdev = plane->fbdev;
597 omapfb_rqueue_lock(fbdev);
598 if (var->xoffset != fbi->var.xoffset ||
599 var->yoffset != fbi->var.yoffset) {
600 struct fb_var_screeninfo *new_var = &fbdev->new_var;
602 memcpy(new_var, &fbi->var, sizeof(*new_var));
603 new_var->xoffset = var->xoffset;
604 new_var->yoffset = var->yoffset;
605 if (set_fb_var(fbi, new_var))
608 memcpy(&fbi->var, new_var, sizeof(*new_var));
609 ctrl_change_mode(fbi);
612 omapfb_rqueue_unlock(fbdev);
617 /* Set mirror to vertical axis and switch to the new mode. */
618 static int omapfb_mirror(struct fb_info *fbi, int mirror)
620 struct omapfb_plane_struct *plane = fbi->par;
621 struct omapfb_device *fbdev = plane->fbdev;
624 omapfb_rqueue_lock(fbdev);
625 mirror = mirror ? 1 : 0;
626 if (cpu_is_omap15xx())
628 else if (mirror != plane->info.mirror) {
629 plane->info.mirror = mirror;
630 r = ctrl_change_mode(fbi);
632 omapfb_rqueue_unlock(fbdev);
638 * Check values in var, try to adjust them in case of out of bound values if
639 * possible, or return error.
641 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
643 struct omapfb_plane_struct *plane = fbi->par;
644 struct omapfb_device *fbdev = plane->fbdev;
647 omapfb_rqueue_lock(fbdev);
648 if (fbdev->ctrl->sync != NULL)
650 r = set_fb_var(fbi, var);
651 omapfb_rqueue_unlock(fbdev);
657 * Switch to a new mode. The parameters for it has been check already by
660 static int omapfb_set_par(struct fb_info *fbi)
662 struct omapfb_plane_struct *plane = fbi->par;
663 struct omapfb_device *fbdev = plane->fbdev;
666 omapfb_rqueue_lock(fbdev);
668 r = ctrl_change_mode(fbi);
669 omapfb_rqueue_unlock(fbdev);
674 int omapfb_update_window_async(struct fb_info *fbi,
675 struct omapfb_update_window *win,
676 void (*callback)(void *),
680 struct omapfb_plane_struct *plane = fbi->par;
681 struct omapfb_device *fbdev = plane->fbdev;
682 struct fb_var_screeninfo *var = &fbi->var;
684 switch (var->rotate) {
687 xres = fbdev->panel->x_res;
688 yres = fbdev->panel->y_res;
692 xres = fbdev->panel->y_res;
693 yres = fbdev->panel->x_res;
699 if (win->x >= xres || win->y >= yres ||
700 win->out_x > xres || win->out_y > yres)
703 if (!fbdev->ctrl->update_window ||
704 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
707 if (win->x + win->width > xres)
708 win->width = xres - win->x;
709 if (win->y + win->height > yres)
710 win->height = yres - win->y;
711 if (win->out_x + win->out_width > xres)
712 win->out_width = xres - win->out_x;
713 if (win->out_y + win->out_height > yres)
714 win->out_height = yres - win->out_y;
715 if (!win->width || !win->height || !win->out_width || !win->out_height)
718 return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
720 EXPORT_SYMBOL(omapfb_update_window_async);
722 static int omapfb_update_win(struct fb_info *fbi,
723 struct omapfb_update_window *win)
725 struct omapfb_plane_struct *plane = fbi->par;
728 omapfb_rqueue_lock(plane->fbdev);
729 ret = omapfb_update_window_async(fbi, win, NULL, NULL);
730 omapfb_rqueue_unlock(plane->fbdev);
735 static int omapfb_update_full_screen(struct fb_info *fbi)
737 struct omapfb_plane_struct *plane = fbi->par;
738 struct omapfb_device *fbdev = plane->fbdev;
739 struct omapfb_update_window win;
742 if (!fbdev->ctrl->update_window ||
743 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
748 win.width = fbi->var.xres;
749 win.height = fbi->var.yres;
752 win.out_width = fbi->var.xres;
753 win.out_height = fbi->var.yres;
756 omapfb_rqueue_lock(fbdev);
757 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
758 omapfb_rqueue_unlock(fbdev);
763 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
765 struct omapfb_plane_struct *plane = fbi->par;
766 struct omapfb_device *fbdev = plane->fbdev;
767 struct lcd_panel *panel = fbdev->panel;
768 struct omapfb_plane_info old_info;
771 if (pi->pos_x + pi->out_width > panel->x_res ||
772 pi->pos_y + pi->out_height > panel->y_res)
775 omapfb_rqueue_lock(fbdev);
776 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
778 * This plane's memory was freed, can't enable it
779 * until it's reallocated.
784 old_info = plane->info;
787 r = ctrl_change_mode(fbi);
789 plane->info = old_info;
793 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
795 plane->info = old_info;
799 omapfb_rqueue_unlock(fbdev);
803 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
805 struct omapfb_plane_struct *plane = fbi->par;
811 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
813 struct omapfb_plane_struct *plane = fbi->par;
814 struct omapfb_device *fbdev = plane->fbdev;
815 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
819 if (fbdev->ctrl->setup_mem == NULL)
821 if (mi->type != OMAPFB_MEMTYPE_SDRAM)
824 size = PAGE_ALIGN(mi->size);
825 omapfb_rqueue_lock(fbdev);
826 if (plane->info.enabled) {
830 if (rg->size != size || rg->type != mi->type) {
831 struct fb_var_screeninfo *new_var = &fbdev->new_var;
832 unsigned long old_size = rg->size;
833 u8 old_type = rg->type;
839 * size == 0 is a special case, for which we
840 * don't check / adjust the screen parameters.
841 * This isn't a problem since the plane can't
842 * be reenabled unless its size is > 0.
844 if (old_size != size && size) {
846 memcpy(new_var, &fbi->var, sizeof(*new_var));
847 r = set_fb_var(fbi, new_var);
853 if (fbdev->ctrl->sync)
855 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
857 /* Revert changes. */
864 if (old_size != size) {
866 memcpy(&fbi->var, new_var, sizeof(fbi->var));
870 * Set these explicitly to indicate that the
871 * plane memory is dealloce'd, the other
872 * screen parameters in var / fix are invalid.
874 mutex_lock(&fbi->mm_lock);
875 fbi->fix.smem_start = 0;
876 fbi->fix.smem_len = 0;
877 mutex_unlock(&fbi->mm_lock);
882 omapfb_rqueue_unlock(fbdev);
887 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
889 struct omapfb_plane_struct *plane = fbi->par;
890 struct omapfb_device *fbdev = plane->fbdev;
891 struct omapfb_mem_region *rg;
893 rg = &fbdev->mem_desc.region[plane->idx];
894 memset(mi, 0, sizeof(*mi));
901 static int omapfb_set_color_key(struct omapfb_device *fbdev,
902 struct omapfb_color_key *ck)
906 if (!fbdev->ctrl->set_color_key)
909 omapfb_rqueue_lock(fbdev);
910 r = fbdev->ctrl->set_color_key(ck);
911 omapfb_rqueue_unlock(fbdev);
916 static int omapfb_get_color_key(struct omapfb_device *fbdev,
917 struct omapfb_color_key *ck)
921 if (!fbdev->ctrl->get_color_key)
924 omapfb_rqueue_lock(fbdev);
925 r = fbdev->ctrl->get_color_key(ck);
926 omapfb_rqueue_unlock(fbdev);
931 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
932 static int notifier_inited;
934 static void omapfb_init_notifier(void)
938 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
939 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
942 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
943 omapfb_notifier_callback_t callback,
948 if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM)
951 if (!notifier_inited) {
952 omapfb_init_notifier();
956 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
957 unsigned long, void *))callback;
958 omapfb_nb->data = callback_data;
959 r = blocking_notifier_chain_register(
960 &omapfb_client_list[omapfb_nb->plane_idx],
964 if (omapfb_dev != NULL &&
965 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
966 omapfb_dev->ctrl->bind_client(omapfb_nb);
971 EXPORT_SYMBOL(omapfb_register_client);
973 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
975 return blocking_notifier_chain_unregister(
976 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
978 EXPORT_SYMBOL(omapfb_unregister_client);
980 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
984 if (!notifier_inited)
985 /* no client registered yet */
988 for (i = 0; i < OMAPFB_PLANE_NUM; i++)
989 blocking_notifier_call_chain(&omapfb_client_list[i], event,
992 EXPORT_SYMBOL(omapfb_notify_clients);
994 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
995 enum omapfb_update_mode mode)
999 omapfb_rqueue_lock(fbdev);
1000 r = fbdev->ctrl->set_update_mode(mode);
1001 omapfb_rqueue_unlock(fbdev);
1006 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1010 omapfb_rqueue_lock(fbdev);
1011 r = fbdev->ctrl->get_update_mode();
1012 omapfb_rqueue_unlock(fbdev);
1017 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1018 struct omapfb_caps *caps)
1020 memset(caps, 0, sizeof(*caps));
1021 fbdev->ctrl->get_caps(plane, caps);
1022 if (fbdev->panel->get_caps)
1023 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1026 /* For lcd testing */
1027 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1029 omapfb_rqueue_lock(fbdev);
1030 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1031 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1032 struct omapfb_update_window win;
1034 memset(&win, 0, sizeof(win));
1039 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
1041 omapfb_rqueue_unlock(fbdev);
1043 EXPORT_SYMBOL(omapfb_write_first_pixel);
1046 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1047 * here to be accessible by user mode code.
1049 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1052 struct omapfb_plane_struct *plane = fbi->par;
1053 struct omapfb_device *fbdev = plane->fbdev;
1054 struct fb_ops *ops = fbi->fbops;
1056 struct omapfb_update_window update_window;
1057 struct omapfb_plane_info plane_info;
1058 struct omapfb_mem_info mem_info;
1059 struct omapfb_color_key color_key;
1060 enum omapfb_update_mode update_mode;
1061 struct omapfb_caps caps;
1062 unsigned int mirror;
1071 if (get_user(p.mirror, (int __user *)arg))
1074 omapfb_mirror(fbi, p.mirror);
1076 case OMAPFB_SYNC_GFX:
1081 case OMAPFB_SET_UPDATE_MODE:
1082 if (get_user(p.update_mode, (int __user *)arg))
1085 r = omapfb_set_update_mode(fbdev, p.update_mode);
1087 case OMAPFB_GET_UPDATE_MODE:
1088 p.update_mode = omapfb_get_update_mode(fbdev);
1089 if (put_user(p.update_mode,
1090 (enum omapfb_update_mode __user *)arg))
1093 case OMAPFB_UPDATE_WINDOW_OLD:
1094 if (copy_from_user(&p.update_window, (void __user *)arg,
1095 sizeof(struct omapfb_update_window_old)))
1098 struct omapfb_update_window *u = &p.update_window;
1101 u->out_width = u->width;
1102 u->out_height = u->height;
1103 memset(u->reserved, 0, sizeof(u->reserved));
1104 r = omapfb_update_win(fbi, u);
1107 case OMAPFB_UPDATE_WINDOW:
1108 if (copy_from_user(&p.update_window, (void __user *)arg,
1109 sizeof(p.update_window)))
1112 r = omapfb_update_win(fbi, &p.update_window);
1114 case OMAPFB_SETUP_PLANE:
1115 if (copy_from_user(&p.plane_info, (void __user *)arg,
1116 sizeof(p.plane_info)))
1119 r = omapfb_setup_plane(fbi, &p.plane_info);
1121 case OMAPFB_QUERY_PLANE:
1122 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1124 if (copy_to_user((void __user *)arg, &p.plane_info,
1125 sizeof(p.plane_info)))
1128 case OMAPFB_SETUP_MEM:
1129 if (copy_from_user(&p.mem_info, (void __user *)arg,
1130 sizeof(p.mem_info)))
1133 r = omapfb_setup_mem(fbi, &p.mem_info);
1135 case OMAPFB_QUERY_MEM:
1136 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1138 if (copy_to_user((void __user *)arg, &p.mem_info,
1139 sizeof(p.mem_info)))
1142 case OMAPFB_SET_COLOR_KEY:
1143 if (copy_from_user(&p.color_key, (void __user *)arg,
1144 sizeof(p.color_key)))
1147 r = omapfb_set_color_key(fbdev, &p.color_key);
1149 case OMAPFB_GET_COLOR_KEY:
1150 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1152 if (copy_to_user((void __user *)arg, &p.color_key,
1153 sizeof(p.color_key)))
1156 case OMAPFB_GET_CAPS:
1157 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1158 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1161 case OMAPFB_LCD_TEST:
1165 if (get_user(test_num, (int __user *)arg)) {
1169 if (!fbdev->panel->run_test) {
1173 r = fbdev->panel->run_test(fbdev->panel, test_num);
1176 case OMAPFB_CTRL_TEST:
1180 if (get_user(test_num, (int __user *)arg)) {
1184 if (!fbdev->ctrl->run_test) {
1188 r = fbdev->ctrl->run_test(test_num);
1198 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1200 struct omapfb_plane_struct *plane = info->par;
1201 struct omapfb_device *fbdev = plane->fbdev;
1204 omapfb_rqueue_lock(fbdev);
1205 r = fbdev->ctrl->mmap(info, vma);
1206 omapfb_rqueue_unlock(fbdev);
1212 * Callback table for the frame buffer framework. Some of these pointers
1213 * will be changed according to the current setting of fb_info->accel_flags.
1215 static struct fb_ops omapfb_ops = {
1216 .owner = THIS_MODULE,
1217 .fb_open = omapfb_open,
1218 .fb_release = omapfb_release,
1219 .fb_setcolreg = omapfb_setcolreg,
1220 .fb_setcmap = omapfb_setcmap,
1221 .fb_fillrect = cfb_fillrect,
1222 .fb_copyarea = cfb_copyarea,
1223 .fb_imageblit = cfb_imageblit,
1224 .fb_blank = omapfb_blank,
1225 .fb_ioctl = omapfb_ioctl,
1226 .fb_check_var = omapfb_check_var,
1227 .fb_set_par = omapfb_set_par,
1228 .fb_pan_display = omapfb_pan_display,
1232 * ---------------------------------------------------------------------------
1234 * ---------------------------------------------------------------------------
1236 /* omapfbX sysfs entries */
1237 static ssize_t omapfb_show_caps_num(struct device *dev,
1238 struct device_attribute *attr, char *buf)
1240 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1243 struct omapfb_caps caps;
1247 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1248 omapfb_get_caps(fbdev, plane, &caps);
1249 size += snprintf(&buf[size], PAGE_SIZE - size,
1250 "plane#%d %#010x %#010x %#010x\n",
1251 plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1257 static ssize_t omapfb_show_caps_text(struct device *dev,
1258 struct device_attribute *attr, char *buf)
1260 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1262 struct omapfb_caps caps;
1268 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1269 omapfb_get_caps(fbdev, plane, &caps);
1270 size += snprintf(&buf[size], PAGE_SIZE - size,
1271 "plane#%d:\n", plane);
1272 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1273 size < PAGE_SIZE; i++) {
1274 if (ctrl_caps[i].flag & caps.ctrl)
1275 size += snprintf(&buf[size], PAGE_SIZE - size,
1276 " %s\n", ctrl_caps[i].name);
1278 size += snprintf(&buf[size], PAGE_SIZE - size,
1279 " plane colors:\n");
1280 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1281 size < PAGE_SIZE; i++) {
1282 if (color_caps[i].flag & caps.plane_color)
1283 size += snprintf(&buf[size], PAGE_SIZE - size,
1284 " %s\n", color_caps[i].name);
1286 size += snprintf(&buf[size], PAGE_SIZE - size,
1287 " window colors:\n");
1288 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1289 size < PAGE_SIZE; i++) {
1290 if (color_caps[i].flag & caps.wnd_color)
1291 size += snprintf(&buf[size], PAGE_SIZE - size,
1292 " %s\n", color_caps[i].name);
1300 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1301 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1303 /* panel sysfs entries */
1304 static ssize_t omapfb_show_panel_name(struct device *dev,
1305 struct device_attribute *attr, char *buf)
1307 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1309 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1312 static ssize_t omapfb_show_bklight_level(struct device *dev,
1313 struct device_attribute *attr,
1316 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1319 if (fbdev->panel->get_bklight_level) {
1320 r = snprintf(buf, PAGE_SIZE, "%d\n",
1321 fbdev->panel->get_bklight_level(fbdev->panel));
1327 static ssize_t omapfb_store_bklight_level(struct device *dev,
1328 struct device_attribute *attr,
1329 const char *buf, size_t size)
1331 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1334 if (fbdev->panel->set_bklight_level) {
1337 if (sscanf(buf, "%10d", &level) == 1) {
1338 r = fbdev->panel->set_bklight_level(fbdev->panel,
1344 return r ? r : size;
1347 static ssize_t omapfb_show_bklight_max(struct device *dev,
1348 struct device_attribute *attr, char *buf)
1350 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1353 if (fbdev->panel->get_bklight_level) {
1354 r = snprintf(buf, PAGE_SIZE, "%d\n",
1355 fbdev->panel->get_bklight_max(fbdev->panel));
1361 static struct device_attribute dev_attr_panel_name =
1362 __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1363 static DEVICE_ATTR(backlight_level, 0664,
1364 omapfb_show_bklight_level, omapfb_store_bklight_level);
1365 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1367 static struct attribute *panel_attrs[] = {
1368 &dev_attr_panel_name.attr,
1369 &dev_attr_backlight_level.attr,
1370 &dev_attr_backlight_max.attr,
1374 static const struct attribute_group panel_attr_grp = {
1376 .attrs = panel_attrs,
1379 /* ctrl sysfs entries */
1380 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1381 struct device_attribute *attr, char *buf)
1383 struct omapfb_device *fbdev = dev_get_drvdata(dev);
1385 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1388 static struct device_attribute dev_attr_ctrl_name =
1389 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1391 static struct attribute *ctrl_attrs[] = {
1392 &dev_attr_ctrl_name.attr,
1396 static const struct attribute_group ctrl_attr_grp = {
1398 .attrs = ctrl_attrs,
1401 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1405 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1408 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1411 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1414 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1419 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1421 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1423 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1425 dev_err(fbdev->dev, "unable to register sysfs interface\n");
1429 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1431 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1432 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1433 device_remove_file(fbdev->dev, &dev_attr_caps_num);
1434 device_remove_file(fbdev->dev, &dev_attr_caps_text);
1438 * ---------------------------------------------------------------------------
1440 * ---------------------------------------------------------------------------
1442 /* Initialize system fb_info object and set the default video mode.
1443 * The frame buffer memory already allocated by lcddma_init
1445 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1447 struct fb_var_screeninfo *var = &info->var;
1448 struct fb_fix_screeninfo *fix = &info->fix;
1451 info->fbops = &omapfb_ops;
1452 info->flags = FBINFO_FLAG_DEFAULT;
1454 strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1456 info->pseudo_palette = fbdev->pseudo_palette;
1458 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0;
1459 var->xres = def_vxres;
1460 var->yres = def_vyres;
1461 var->xres_virtual = def_vxres;
1462 var->yres_virtual = def_vyres;
1463 var->rotate = def_rotate;
1464 var->bits_per_pixel = fbdev->panel->bpp;
1466 set_fb_var(info, var);
1467 set_fb_fix(info, 1);
1469 r = fb_alloc_cmap(&info->cmap, 16, 0);
1471 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1476 /* Release the fb_info object */
1477 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1479 fb_dealloc_cmap(&fbi->cmap);
1482 static void planes_cleanup(struct omapfb_device *fbdev)
1486 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1487 if (fbdev->fb_info[i] == NULL)
1489 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1490 framebuffer_release(fbdev->fb_info[i]);
1494 static int planes_init(struct omapfb_device *fbdev)
1496 struct fb_info *fbi;
1500 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1501 struct omapfb_plane_struct *plane;
1502 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1505 planes_cleanup(fbdev);
1510 plane->fbdev = fbdev;
1511 plane->info.mirror = def_mirror;
1512 fbdev->fb_info[i] = fbi;
1514 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1515 framebuffer_release(fbi);
1516 planes_cleanup(fbdev);
1519 plane->info.out_width = fbi->var.xres;
1520 plane->info.out_height = fbi->var.yres;
1526 * Free driver resources. Can be called to rollback an aborted initialization
1529 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1535 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1536 unregister_framebuffer(fbdev->fb_info[i]);
1538 omapfb_unregister_sysfs(fbdev);
1540 if (fbdev->panel->disable)
1541 fbdev->panel->disable(fbdev->panel);
1543 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1545 planes_cleanup(fbdev);
1547 ctrl_cleanup(fbdev);
1549 if (fbdev->panel->cleanup)
1550 fbdev->panel->cleanup(fbdev->panel);
1552 dev_set_drvdata(fbdev->dev, NULL);
1555 /* nothing to free */
1562 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1564 struct omapfb_platform_data *conf;
1568 conf = dev_get_platdata(fbdev->dev);
1572 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1573 name[sizeof(name) - 1] = '\0';
1575 if (strcmp(name, "internal") == 0) {
1576 fbdev->ctrl = fbdev->int_ctrl;
1580 for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1581 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1582 if (strcmp(ctrls[i]->name, name) == 0) {
1583 fbdev->ctrl = ctrls[i];
1588 if (fbdev->ctrl == NULL) {
1589 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1597 * Called by LDM binding to probe and attach a new device.
1598 * Initialization sequence:
1599 * 1. allocate system omapfb_device structure
1600 * 2. select controller type according to platform configuration
1602 * 3. init LCD controller and LCD DMA
1603 * 4. init system fb_info structure for all planes
1604 * 5. setup video mode for first plane and enable it
1605 * 6. enable LCD panel
1606 * 7. register sysfs attributes
1607 * OMAPFB_ACTIVE: register system fb_info structure for all planes
1609 static int omapfb_do_probe(struct platform_device *pdev,
1610 struct lcd_panel *panel)
1612 struct omapfb_device *fbdev = NULL;
1614 unsigned long phz, hhz, vhz;
1621 if (pdev->num_resources != 0) {
1622 dev_err(&pdev->dev, "probed for an unknown device\n");
1627 if (dev_get_platdata(&pdev->dev) == NULL) {
1628 dev_err(&pdev->dev, "missing platform data\n");
1633 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
1634 if (fbdev == NULL) {
1636 "unable to allocate memory for device info\n");
1642 fbdev->dev = &pdev->dev;
1643 fbdev->panel = panel;
1644 fbdev->dssdev = &omapdss_device;
1645 platform_set_drvdata(pdev, fbdev);
1647 mutex_init(&fbdev->rqueue_mutex);
1649 fbdev->int_ctrl = &omap1_int_ctrl;
1650 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1651 fbdev->ext_if = &omap1_ext_if;
1653 if (omapfb_find_ctrl(fbdev) < 0) {
1655 "LCD controller not found, board not supported\n");
1660 if (fbdev->panel->init) {
1661 r = fbdev->panel->init(fbdev->panel, fbdev);
1666 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1668 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1669 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1673 r = ctrl_init(fbdev);
1676 if (fbdev->ctrl->mmap != NULL)
1677 omapfb_ops.fb_mmap = omapfb_mmap;
1680 r = planes_init(fbdev);
1685 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1686 /* Set DMA priority for EMIFF access to highest */
1687 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1690 r = ctrl_change_mode(fbdev->fb_info[0]);
1692 dev_err(fbdev->dev, "mode setting failed\n");
1696 /* GFX plane is enabled by default */
1697 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1701 omapfb_set_update_mode(fbdev, manual_update ?
1702 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1705 if (fbdev->panel->enable) {
1706 r = fbdev->panel->enable(fbdev->panel);
1712 r = omapfb_register_sysfs(fbdev);
1718 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1719 r = register_framebuffer(fbdev->fb_info[i]);
1722 "registering framebuffer %d failed\n", i);
1725 vram += fbdev->mem_desc.region[i].size;
1728 fbdev->state = OMAPFB_ACTIVE;
1730 panel = fbdev->panel;
1731 phz = panel->pixel_clock * 1000;
1732 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1733 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1737 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1738 vram, fbdev->mem_desc.region_cnt);
1739 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1740 "vfreq %lu.%lu Hz\n",
1741 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1746 omapfb_free_resources(fbdev, init_state);
1751 static int omapfb_probe(struct platform_device *pdev)
1755 BUG_ON(fbdev_pdev != NULL);
1757 r = platform_device_register(&omapdss_device);
1759 dev_err(&pdev->dev, "can't register omapdss device\n");
1763 /* Delay actual initialization until the LCD is registered */
1765 if (fbdev_panel != NULL)
1766 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1770 void omapfb_register_panel(struct lcd_panel *panel)
1772 BUG_ON(fbdev_panel != NULL);
1774 fbdev_panel = panel;
1775 if (fbdev_pdev != NULL)
1776 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1778 EXPORT_SYMBOL_GPL(omapfb_register_panel);
1780 /* Called when the device is being detached from the driver */
1781 static int omapfb_remove(struct platform_device *pdev)
1783 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1784 enum omapfb_state saved_state = fbdev->state;
1786 /* FIXME: wait till completion of pending events */
1788 fbdev->state = OMAPFB_DISABLED;
1789 omapfb_free_resources(fbdev, saved_state);
1791 platform_device_unregister(&omapdss_device);
1792 fbdev->dssdev = NULL;
1798 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1800 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1803 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1808 static int omapfb_resume(struct platform_device *pdev)
1810 struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1813 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1817 static struct platform_driver omapfb_driver = {
1818 .probe = omapfb_probe,
1819 .remove = omapfb_remove,
1820 .suspend = omapfb_suspend,
1821 .resume = omapfb_resume,
1823 .name = MODULE_NAME,
1829 /* Process kernel command line parameters */
1830 static int __init omapfb_setup(char *options)
1832 char *this_opt = NULL;
1835 pr_debug("omapfb: options %s\n", options);
1837 if (!options || !*options)
1840 while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1841 if (!strncmp(this_opt, "accel", 5))
1843 else if (!strncmp(this_opt, "vram:", 5)) {
1846 vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1847 switch (suffix[0]) {
1859 pr_debug("omapfb: invalid vram suffix %c\n",
1863 def_vram[def_vram_cnt++] = vram;
1865 else if (!strncmp(this_opt, "vxres:", 6))
1866 def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1867 else if (!strncmp(this_opt, "vyres:", 6))
1868 def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1869 else if (!strncmp(this_opt, "rotate:", 7))
1870 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1871 else if (!strncmp(this_opt, "mirror:", 7))
1872 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1873 else if (!strncmp(this_opt, "manual_update", 13))
1876 pr_debug("omapfb: invalid option\n");
1886 /* Register both the driver and the device */
1887 static int __init omapfb_init(void)
1892 if (fb_get_options("omapfb", &option))
1894 omapfb_setup(option);
1896 /* Register the driver with LDM */
1897 if (platform_driver_register(&omapfb_driver)) {
1898 pr_debug("failed to register omapfb driver\n");
1905 static void __exit omapfb_cleanup(void)
1907 platform_driver_unregister(&omapfb_driver);
1910 module_param_named(accel, def_accel, uint, 0664);
1911 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1912 module_param_named(vxres, def_vxres, long, 0664);
1913 module_param_named(vyres, def_vyres, long, 0664);
1914 module_param_named(rotate, def_rotate, uint, 0664);
1915 module_param_named(mirror, def_mirror, uint, 0664);
1916 module_param_named(manual_update, manual_update, bool, 0664);
1918 module_init(omapfb_init);
1919 module_exit(omapfb_cleanup);
1921 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1922 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1923 MODULE_LICENSE("GPL");