/* * Framebuffer driver for TI OMAP boards * * Copyright (C) 2004 Nokia Corporation * Author: Imre Deak * * Acknowledgements: * Alex McMains - Original driver * Juha Yrjola - Original driver and improvements * Dirk Behme - changes for 2.6 kernel API * Texas Instruments - H3 support * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include #include #include "omapfb.h" #include "lcdc.h" #define MODULE_NAME "omapfb" static unsigned int def_accel; static unsigned long def_vram[OMAPFB_PLANE_NUM]; static unsigned int def_vram_cnt; static unsigned long def_vxres; static unsigned long def_vyres; static unsigned int def_rotate; static unsigned int def_mirror; #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE static bool manual_update = 1; #else static bool manual_update; #endif static struct platform_device *fbdev_pdev; static struct lcd_panel *fbdev_panel; static struct omapfb_device *omapfb_dev; struct caps_table_struct { unsigned long flag; const char *name; }; static struct caps_table_struct ctrl_caps[] = { { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" }, { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" }, { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" }, { OMAPFB_CAPS_PLANE_SCALE, "scale plane" }, { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" }, { OMAPFB_CAPS_WINDOW_SCALE, "scale window" }, { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" }, { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" }, { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" }, }; static struct caps_table_struct color_caps[] = { { 1 << OMAPFB_COLOR_RGB565, "RGB565", }, { 1 << OMAPFB_COLOR_YUV422, "YUV422", }, { 1 << OMAPFB_COLOR_YUV420, "YUV420", }, { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", }, { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", }, { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", }, { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", }, { 1 << OMAPFB_COLOR_RGB444, "RGB444", }, { 1 << OMAPFB_COLOR_YUY422, "YUY422", }, }; static void omapdss_release(struct device *dev) { } /* dummy device for clocks */ static struct platform_device omapdss_device = { .name = "omapdss_dss", .id = -1, .dev = { .release = omapdss_release, }, }; /* * --------------------------------------------------------------------------- * LCD panel * --------------------------------------------------------------------------- */ extern struct lcd_ctrl hwa742_ctrl; static const struct lcd_ctrl *ctrls[] = { &omap1_int_ctrl, #ifdef CONFIG_FB_OMAP_LCDC_HWA742 &hwa742_ctrl, #endif }; #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL extern struct lcd_ctrl_extif omap1_ext_if; #endif static void omapfb_rqueue_lock(struct omapfb_device *fbdev) { mutex_lock(&fbdev->rqueue_mutex); } static void omapfb_rqueue_unlock(struct omapfb_device *fbdev) { mutex_unlock(&fbdev->rqueue_mutex); } /* * --------------------------------------------------------------------------- * LCD controller and LCD DMA * --------------------------------------------------------------------------- */ /* * Allocate resources needed for LCD controller and LCD DMA operations. Video * memory is allocated from system memory according to the virtual display * size, except if a bigger memory size is specified explicitly as a kernel * parameter. */ static int ctrl_init(struct omapfb_device *fbdev) { int r; int i; /* kernel/module vram parameters override boot tags/board config */ if (def_vram_cnt) { for (i = 0; i < def_vram_cnt; i++) fbdev->mem_desc.region[i].size = PAGE_ALIGN(def_vram[i]); fbdev->mem_desc.region_cnt = i; } if (!fbdev->mem_desc.region_cnt) { struct lcd_panel *panel = fbdev->panel; int def_size; int bpp = panel->bpp; /* 12 bpp is packed in 16 bits */ if (bpp == 12) bpp = 16; def_size = def_vxres * def_vyres * bpp / 8; fbdev->mem_desc.region_cnt = 1; fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size); } r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc); if (r < 0) { dev_err(fbdev->dev, "controller initialization failed (%d)\n", r); return r; } #ifdef DEBUG for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n", i, fbdev->mem_desc.region[i].paddr, fbdev->mem_desc.region[i].vaddr, fbdev->mem_desc.region[i].size); } #endif return 0; } static void ctrl_cleanup(struct omapfb_device *fbdev) { fbdev->ctrl->cleanup(); } /* Must be called with fbdev->rqueue_mutex held. */ static int ctrl_change_mode(struct fb_info *fbi) { int r; unsigned long offset; struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct fb_var_screeninfo *var = &fbi->var; offset = var->yoffset * fbi->fix.line_length + var->xoffset * var->bits_per_pixel / 8; if (fbdev->ctrl->sync) fbdev->ctrl->sync(); r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out, offset, var->xres_virtual, plane->info.pos_x, plane->info.pos_y, var->xres, var->yres, plane->color_mode); if (r < 0) return r; if (fbdev->ctrl->set_rotate != NULL) { r = fbdev->ctrl->set_rotate(var->rotate); if (r < 0) return r; } if (fbdev->ctrl->set_scale != NULL) r = fbdev->ctrl->set_scale(plane->idx, var->xres, var->yres, plane->info.out_width, plane->info.out_height); return r; } /* * --------------------------------------------------------------------------- * fbdev framework callbacks and the ioctl interface * --------------------------------------------------------------------------- */ /* Called each time the omapfb device is opened */ static int omapfb_open(struct fb_info *info, int user) { return 0; } static void omapfb_sync(struct fb_info *info); /* Called when the omapfb device is closed. We make sure that any pending * gfx DMA operations are ended, before we return. */ static int omapfb_release(struct fb_info *info, int user) { omapfb_sync(info); return 0; } /* Store a single color palette entry into a pseudo palette or the hardware * palette if one is available. For now we support only 16bpp and thus store * the entry only to the pseudo palette. */ static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green, u_int blue, u_int transp, int update_hw_pal) { struct omapfb_plane_struct *plane = info->par; struct omapfb_device *fbdev = plane->fbdev; struct fb_var_screeninfo *var = &info->var; int r = 0; switch (plane->color_mode) { case OMAPFB_COLOR_YUV422: case OMAPFB_COLOR_YUV420: case OMAPFB_COLOR_YUY422: r = -EINVAL; break; case OMAPFB_COLOR_CLUT_8BPP: case OMAPFB_COLOR_CLUT_4BPP: case OMAPFB_COLOR_CLUT_2BPP: case OMAPFB_COLOR_CLUT_1BPP: if (fbdev->ctrl->setcolreg) r = fbdev->ctrl->setcolreg(regno, red, green, blue, transp, update_hw_pal); /* Fallthrough */ case OMAPFB_COLOR_RGB565: case OMAPFB_COLOR_RGB444: if (r != 0) break; if (regno < 0) { r = -EINVAL; break; } if (regno < 16) { u16 pal; pal = ((red >> (16 - var->red.length)) << var->red.offset) | ((green >> (16 - var->green.length)) << var->green.offset) | (blue >> (16 - var->blue.length)); ((u32 *)(info->pseudo_palette))[regno] = pal; } break; default: BUG(); } return r; } static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { return _setcolreg(info, regno, red, green, blue, transp, 1); } static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) { int count, index, r; u16 *red, *green, *blue, *transp; u16 trans = 0xffff; red = cmap->red; green = cmap->green; blue = cmap->blue; transp = cmap->transp; index = cmap->start; for (count = 0; count < cmap->len; count++) { if (transp) trans = *transp++; r = _setcolreg(info, index++, *red++, *green++, *blue++, trans, count == cmap->len - 1); if (r != 0) return r; } return 0; } static int omapfb_update_full_screen(struct fb_info *fbi); static int omapfb_blank(int blank, struct fb_info *fbi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; int do_update = 0; int r = 0; omapfb_rqueue_lock(fbdev); switch (blank) { case FB_BLANK_UNBLANK: if (fbdev->state == OMAPFB_SUSPENDED) { if (fbdev->ctrl->resume) fbdev->ctrl->resume(); fbdev->panel->enable(fbdev->panel); fbdev->state = OMAPFB_ACTIVE; if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) do_update = 1; } break; case FB_BLANK_POWERDOWN: if (fbdev->state == OMAPFB_ACTIVE) { fbdev->panel->disable(fbdev->panel); if (fbdev->ctrl->suspend) fbdev->ctrl->suspend(); fbdev->state = OMAPFB_SUSPENDED; } break; default: r = -EINVAL; } omapfb_rqueue_unlock(fbdev); if (r == 0 && do_update) r = omapfb_update_full_screen(fbi); return r; } static void omapfb_sync(struct fb_info *fbi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; omapfb_rqueue_lock(fbdev); if (fbdev->ctrl->sync) fbdev->ctrl->sync(); omapfb_rqueue_unlock(fbdev); } /* * Set fb_info.fix fields and also updates fbdev. * When calling this fb_info.var must be set up already. */ static void set_fb_fix(struct fb_info *fbi, int from_init) { struct fb_fix_screeninfo *fix = &fbi->fix; struct fb_var_screeninfo *var = &fbi->var; struct omapfb_plane_struct *plane = fbi->par; struct omapfb_mem_region *rg; int bpp; rg = &plane->fbdev->mem_desc.region[plane->idx]; fbi->screen_base = rg->vaddr; if (!from_init) { mutex_lock(&fbi->mm_lock); fix->smem_start = rg->paddr; fix->smem_len = rg->size; mutex_unlock(&fbi->mm_lock); } else { fix->smem_start = rg->paddr; fix->smem_len = rg->size; } fix->type = FB_TYPE_PACKED_PIXELS; bpp = var->bits_per_pixel; if (var->nonstd) fix->visual = FB_VISUAL_PSEUDOCOLOR; else switch (var->bits_per_pixel) { case 16: case 12: fix->visual = FB_VISUAL_TRUECOLOR; /* 12bpp is stored in 16 bits */ bpp = 16; break; case 1: case 2: case 4: case 8: fix->visual = FB_VISUAL_PSEUDOCOLOR; break; } fix->accel = FB_ACCEL_OMAP1610; fix->line_length = var->xres_virtual * bpp / 8; } static int set_color_mode(struct omapfb_plane_struct *plane, struct fb_var_screeninfo *var) { switch (var->nonstd) { case 0: break; case OMAPFB_COLOR_YUV422: var->bits_per_pixel = 16; plane->color_mode = var->nonstd; return 0; case OMAPFB_COLOR_YUV420: var->bits_per_pixel = 12; plane->color_mode = var->nonstd; return 0; case OMAPFB_COLOR_YUY422: var->bits_per_pixel = 16; plane->color_mode = var->nonstd; return 0; default: return -EINVAL; } switch (var->bits_per_pixel) { case 1: plane->color_mode = OMAPFB_COLOR_CLUT_1BPP; return 0; case 2: plane->color_mode = OMAPFB_COLOR_CLUT_2BPP; return 0; case 4: plane->color_mode = OMAPFB_COLOR_CLUT_4BPP; return 0; case 8: plane->color_mode = OMAPFB_COLOR_CLUT_8BPP; return 0; case 12: var->bits_per_pixel = 16; case 16: if (plane->fbdev->panel->bpp == 12) plane->color_mode = OMAPFB_COLOR_RGB444; else plane->color_mode = OMAPFB_COLOR_RGB565; return 0; default: return -EINVAL; } } /* * Check the values in var against our capabilities and in case of out of * bound values try to adjust them. */ static int set_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var) { int bpp; unsigned long max_frame_size; unsigned long line_size; int xres_min, xres_max; int yres_min, yres_max; struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct lcd_panel *panel = fbdev->panel; if (set_color_mode(plane, var) < 0) return -EINVAL; bpp = var->bits_per_pixel; if (plane->color_mode == OMAPFB_COLOR_RGB444) bpp = 16; switch (var->rotate) { case 0: case 180: xres_min = OMAPFB_PLANE_XRES_MIN; xres_max = panel->x_res; yres_min = OMAPFB_PLANE_YRES_MIN; yres_max = panel->y_res; if (cpu_is_omap15xx()) { var->xres = panel->x_res; var->yres = panel->y_res; } break; case 90: case 270: xres_min = OMAPFB_PLANE_YRES_MIN; xres_max = panel->y_res; yres_min = OMAPFB_PLANE_XRES_MIN; yres_max = panel->x_res; if (cpu_is_omap15xx()) { var->xres = panel->y_res; var->yres = panel->x_res; } break; default: return -EINVAL; } if (var->xres < xres_min) var->xres = xres_min; if (var->yres < yres_min) var->yres = yres_min; if (var->xres > xres_max) var->xres = xres_max; if (var->yres > yres_max) var->yres = yres_max; if (var->xres_virtual < var->xres) var->xres_virtual = var->xres; if (var->yres_virtual < var->yres) var->yres_virtual = var->yres; max_frame_size = fbdev->mem_desc.region[plane->idx].size; line_size = var->xres_virtual * bpp / 8; if (line_size * var->yres_virtual > max_frame_size) { /* Try to keep yres_virtual first */ line_size = max_frame_size / var->yres_virtual; var->xres_virtual = line_size * 8 / bpp; if (var->xres_virtual < var->xres) { /* Still doesn't fit. Shrink yres_virtual too */ var->xres_virtual = var->xres; line_size = var->xres * bpp / 8; var->yres_virtual = max_frame_size / line_size; } /* Recheck this, as the virtual size changed. */ if (var->xres_virtual < var->xres) var->xres = var->xres_virtual; if (var->yres_virtual < var->yres) var->yres = var->yres_virtual; if (var->xres < xres_min || var->yres < yres_min) return -EINVAL; } if (var->xres + var->xoffset > var->xres_virtual) var->xoffset = var->xres_virtual - var->xres; if (var->yres + var->yoffset > var->yres_virtual) var->yoffset = var->yres_virtual - var->yres; if (plane->color_mode == OMAPFB_COLOR_RGB444) { var->red.offset = 8; var->red.length = 4; var->red.msb_right = 0; var->green.offset = 4; var->green.length = 4; var->green.msb_right = 0; var->blue.offset = 0; var->blue.length = 4; var->blue.msb_right = 0; } else { var->red.offset = 11; var->red.length = 5; var->red.msb_right = 0; var->green.offset = 5; var->green.length = 6; var->green.msb_right = 0; var->blue.offset = 0; var->blue.length = 5; var->blue.msb_right = 0; } var->height = -1; var->width = -1; var->grayscale = 0; /* pixclock in ps, the rest in pixclock */ var->pixclock = 10000000 / (panel->pixel_clock / 100); var->left_margin = panel->hfp; var->right_margin = panel->hbp; var->upper_margin = panel->vfp; var->lower_margin = panel->vbp; var->hsync_len = panel->hsw; var->vsync_len = panel->vsw; /* TODO: get these from panel->config */ var->vmode = FB_VMODE_NONINTERLACED; var->sync = 0; return 0; } /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */ static void omapfb_rotate(struct fb_info *fbi, int rotate) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; omapfb_rqueue_lock(fbdev); if (rotate != fbi->var.rotate) { struct fb_var_screeninfo *new_var = &fbdev->new_var; memcpy(new_var, &fbi->var, sizeof(*new_var)); new_var->rotate = rotate; if (set_fb_var(fbi, new_var) == 0 && memcmp(new_var, &fbi->var, sizeof(*new_var))) { memcpy(&fbi->var, new_var, sizeof(*new_var)); ctrl_change_mode(fbi); } } omapfb_rqueue_unlock(fbdev); } /* * Set new x,y offsets in the virtual display for the visible area and switch * to the new mode. */ static int omapfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; int r = 0; omapfb_rqueue_lock(fbdev); if (var->xoffset != fbi->var.xoffset || var->yoffset != fbi->var.yoffset) { struct fb_var_screeninfo *new_var = &fbdev->new_var; memcpy(new_var, &fbi->var, sizeof(*new_var)); new_var->xoffset = var->xoffset; new_var->yoffset = var->yoffset; if (set_fb_var(fbi, new_var)) r = -EINVAL; else { memcpy(&fbi->var, new_var, sizeof(*new_var)); ctrl_change_mode(fbi); } } omapfb_rqueue_unlock(fbdev); return r; } /* Set mirror to vertical axis and switch to the new mode. */ static int omapfb_mirror(struct fb_info *fbi, int mirror) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; int r = 0; omapfb_rqueue_lock(fbdev); mirror = mirror ? 1 : 0; if (cpu_is_omap15xx()) r = -EINVAL; else if (mirror != plane->info.mirror) { plane->info.mirror = mirror; r = ctrl_change_mode(fbi); } omapfb_rqueue_unlock(fbdev); return r; } /* * Check values in var, try to adjust them in case of out of bound values if * possible, or return error. */ static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; int r; omapfb_rqueue_lock(fbdev); if (fbdev->ctrl->sync != NULL) fbdev->ctrl->sync(); r = set_fb_var(fbi, var); omapfb_rqueue_unlock(fbdev); return r; } /* * Switch to a new mode. The parameters for it has been check already by * omapfb_check_var. */ static int omapfb_set_par(struct fb_info *fbi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; int r = 0; omapfb_rqueue_lock(fbdev); set_fb_fix(fbi, 0); r = ctrl_change_mode(fbi); omapfb_rqueue_unlock(fbdev); return r; } int omapfb_update_window_async(struct fb_info *fbi, struct omapfb_update_window *win, void (*callback)(void *), void *callback_data) { int xres, yres; struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct fb_var_screeninfo *var = &fbi->var; switch (var->rotate) { case 0: case 180: xres = fbdev->panel->x_res; yres = fbdev->panel->y_res; break; case 90: case 270: xres = fbdev->panel->y_res; yres = fbdev->panel->x_res; break; default: return -EINVAL; } if (win->x >= xres || win->y >= yres || win->out_x > xres || win->out_y > yres) return -EINVAL; if (!fbdev->ctrl->update_window || fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) return -ENODEV; if (win->x + win->width > xres) win->width = xres - win->x; if (win->y + win->height > yres) win->height = yres - win->y; if (win->out_x + win->out_width > xres) win->out_width = xres - win->out_x; if (win->out_y + win->out_height > yres) win->out_height = yres - win->out_y; if (!win->width || !win->height || !win->out_width || !win->out_height) return 0; return fbdev->ctrl->update_window(fbi, win, callback, callback_data); } EXPORT_SYMBOL(omapfb_update_window_async); static int omapfb_update_win(struct fb_info *fbi, struct omapfb_update_window *win) { struct omapfb_plane_struct *plane = fbi->par; int ret; omapfb_rqueue_lock(plane->fbdev); ret = omapfb_update_window_async(fbi, win, NULL, NULL); omapfb_rqueue_unlock(plane->fbdev); return ret; } static int omapfb_update_full_screen(struct fb_info *fbi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct omapfb_update_window win; int r; if (!fbdev->ctrl->update_window || fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) return -ENODEV; win.x = 0; win.y = 0; win.width = fbi->var.xres; win.height = fbi->var.yres; win.out_x = 0; win.out_y = 0; win.out_width = fbi->var.xres; win.out_height = fbi->var.yres; win.format = 0; omapfb_rqueue_lock(fbdev); r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL); omapfb_rqueue_unlock(fbdev); return r; } static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct lcd_panel *panel = fbdev->panel; struct omapfb_plane_info old_info; int r = 0; if (pi->pos_x + pi->out_width > panel->x_res || pi->pos_y + pi->out_height > panel->y_res) return -EINVAL; omapfb_rqueue_lock(fbdev); if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) { /* * This plane's memory was freed, can't enable it * until it's reallocated. */ r = -EINVAL; goto out; } old_info = plane->info; plane->info = *pi; if (pi->enabled) { r = ctrl_change_mode(fbi); if (r < 0) { plane->info = old_info; goto out; } } r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled); if (r < 0) { plane->info = old_info; goto out; } out: omapfb_rqueue_unlock(fbdev); return r; } static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) { struct omapfb_plane_struct *plane = fbi->par; *pi = plane->info; return 0; } static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx]; size_t size; int r = 0; if (fbdev->ctrl->setup_mem == NULL) return -ENODEV; if (mi->type != OMAPFB_MEMTYPE_SDRAM) return -EINVAL; size = PAGE_ALIGN(mi->size); omapfb_rqueue_lock(fbdev); if (plane->info.enabled) { r = -EBUSY; goto out; } if (rg->size != size || rg->type != mi->type) { struct fb_var_screeninfo *new_var = &fbdev->new_var; unsigned long old_size = rg->size; u8 old_type = rg->type; unsigned long paddr; rg->size = size; rg->type = mi->type; /* * size == 0 is a special case, for which we * don't check / adjust the screen parameters. * This isn't a problem since the plane can't * be reenabled unless its size is > 0. */ if (old_size != size && size) { if (size) { memcpy(new_var, &fbi->var, sizeof(*new_var)); r = set_fb_var(fbi, new_var); if (r < 0) goto out; } } if (fbdev->ctrl->sync) fbdev->ctrl->sync(); r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); if (r < 0) { /* Revert changes. */ rg->size = old_size; rg->type = old_type; goto out; } rg->paddr = paddr; if (old_size != size) { if (size) { memcpy(&fbi->var, new_var, sizeof(fbi->var)); set_fb_fix(fbi, 0); } else { /* * Set these explicitly to indicate that the * plane memory is dealloce'd, the other * screen parameters in var / fix are invalid. */ mutex_lock(&fbi->mm_lock); fbi->fix.smem_start = 0; fbi->fix.smem_len = 0; mutex_unlock(&fbi->mm_lock); } } } out: omapfb_rqueue_unlock(fbdev); return r; } static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct omapfb_mem_region *rg; rg = &fbdev->mem_desc.region[plane->idx]; memset(mi, 0, sizeof(*mi)); mi->size = rg->size; mi->type = rg->type; return 0; } static int omapfb_set_color_key(struct omapfb_device *fbdev, struct omapfb_color_key *ck) { int r; if (!fbdev->ctrl->set_color_key) return -ENODEV; omapfb_rqueue_lock(fbdev); r = fbdev->ctrl->set_color_key(ck); omapfb_rqueue_unlock(fbdev); return r; } static int omapfb_get_color_key(struct omapfb_device *fbdev, struct omapfb_color_key *ck) { int r; if (!fbdev->ctrl->get_color_key) return -ENODEV; omapfb_rqueue_lock(fbdev); r = fbdev->ctrl->get_color_key(ck); omapfb_rqueue_unlock(fbdev); return r; } static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; static int notifier_inited; static void omapfb_init_notifier(void) { int i; for (i = 0; i < OMAPFB_PLANE_NUM; i++) BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); } int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, omapfb_notifier_callback_t callback, void *callback_data) { int r; if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM) return -EINVAL; if (!notifier_inited) { omapfb_init_notifier(); notifier_inited = 1; } omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, unsigned long, void *))callback; omapfb_nb->data = callback_data; r = blocking_notifier_chain_register( &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); if (r) return r; if (omapfb_dev != NULL && omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { omapfb_dev->ctrl->bind_client(omapfb_nb); } return 0; } EXPORT_SYMBOL(omapfb_register_client); int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) { return blocking_notifier_chain_unregister( &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); } EXPORT_SYMBOL(omapfb_unregister_client); void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) { int i; if (!notifier_inited) /* no client registered yet */ return; for (i = 0; i < OMAPFB_PLANE_NUM; i++) blocking_notifier_call_chain(&omapfb_client_list[i], event, fbdev->fb_info[i]); } EXPORT_SYMBOL(omapfb_notify_clients); static int omapfb_set_update_mode(struct omapfb_device *fbdev, enum omapfb_update_mode mode) { int r; omapfb_rqueue_lock(fbdev); r = fbdev->ctrl->set_update_mode(mode); omapfb_rqueue_unlock(fbdev); return r; } static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) { int r; omapfb_rqueue_lock(fbdev); r = fbdev->ctrl->get_update_mode(); omapfb_rqueue_unlock(fbdev); return r; } static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, struct omapfb_caps *caps) { memset(caps, 0, sizeof(*caps)); fbdev->ctrl->get_caps(plane, caps); caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); } /* For lcd testing */ void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) { omapfb_rqueue_lock(fbdev); *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { struct omapfb_update_window win; memset(&win, 0, sizeof(win)); win.width = 2; win.height = 2; win.out_width = 2; win.out_height = 2; fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); } omapfb_rqueue_unlock(fbdev); } EXPORT_SYMBOL(omapfb_write_first_pixel); /* * Ioctl interface. Part of the kernel mode frame buffer API is duplicated * here to be accessible by user mode code. */ static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg) { struct omapfb_plane_struct *plane = fbi->par; struct omapfb_device *fbdev = plane->fbdev; struct fb_ops *ops = fbi->fbops; union { struct omapfb_update_window update_window; struct omapfb_plane_info plane_info; struct omapfb_mem_info mem_info; struct omapfb_color_key color_key; enum omapfb_update_mode update_mode; struct omapfb_caps caps; unsigned int mirror; int plane_out; int enable_plane; } p; int r = 0; BUG_ON(!ops); switch (cmd) { case OMAPFB_MIRROR: if (get_user(p.mirror, (int __user *)arg)) r = -EFAULT; else omapfb_mirror(fbi, p.mirror); break; case OMAPFB_SYNC_GFX: omapfb_sync(fbi); break; case OMAPFB_VSYNC: break; case OMAPFB_SET_UPDATE_MODE: if (get_user(p.update_mode, (int __user *)arg)) r = -EFAULT; else r = omapfb_set_update_mode(fbdev, p.update_mode); break; case OMAPFB_GET_UPDATE_MODE: p.update_mode = omapfb_get_update_mode(fbdev); if (put_user(p.update_mode, (enum omapfb_update_mode __user *)arg)) r = -EFAULT; break; case OMAPFB_UPDATE_WINDOW_OLD: if (copy_from_user(&p.update_window, (void __user *)arg, sizeof(struct omapfb_update_window_old))) r = -EFAULT; else { struct omapfb_update_window *u = &p.update_window; u->out_x = u->x; u->out_y = u->y; u->out_width = u->width; u->out_height = u->height; memset(u->reserved, 0, sizeof(u->reserved)); r = omapfb_update_win(fbi, u); } break; case OMAPFB_UPDATE_WINDOW: if (copy_from_user(&p.update_window, (void __user *)arg, sizeof(p.update_window))) r = -EFAULT; else r = omapfb_update_win(fbi, &p.update_window); break; case OMAPFB_SETUP_PLANE: if (copy_from_user(&p.plane_info, (void __user *)arg, sizeof(p.plane_info))) r = -EFAULT; else r = omapfb_setup_plane(fbi, &p.plane_info); break; case OMAPFB_QUERY_PLANE: if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0) break; if (copy_to_user((void __user *)arg, &p.plane_info, sizeof(p.plane_info))) r = -EFAULT; break; case OMAPFB_SETUP_MEM: if (copy_from_user(&p.mem_info, (void __user *)arg, sizeof(p.mem_info))) r = -EFAULT; else r = omapfb_setup_mem(fbi, &p.mem_info); break; case OMAPFB_QUERY_MEM: if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0) break; if (copy_to_user((void __user *)arg, &p.mem_info, sizeof(p.mem_info))) r = -EFAULT; break; case OMAPFB_SET_COLOR_KEY: if (copy_from_user(&p.color_key, (void __user *)arg, sizeof(p.color_key))) r = -EFAULT; else r = omapfb_set_color_key(fbdev, &p.color_key); break; case OMAPFB_GET_COLOR_KEY: if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0) break; if (copy_to_user((void __user *)arg, &p.color_key, sizeof(p.color_key))) r = -EFAULT; break; case OMAPFB_GET_CAPS: omapfb_get_caps(fbdev, plane->idx, &p.caps); if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps))) r = -EFAULT; break; case OMAPFB_LCD_TEST: { int test_num; if (get_user(test_num, (int __user *)arg)) { r = -EFAULT; break; } if (!fbdev->panel->run_test) { r = -EINVAL; break; } r = fbdev->panel->run_test(fbdev->panel, test_num); break; } case OMAPFB_CTRL_TEST: { int test_num; if (get_user(test_num, (int __user *)arg)) { r = -EFAULT; break; } if (!fbdev->ctrl->run_test) { r = -EINVAL; break; } r = fbdev->ctrl->run_test(test_num); break; } default: r = -EINVAL; } return r; } static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) { struct omapfb_plane_struct *plane = info->par; struct omapfb_device *fbdev = plane->fbdev; int r; omapfb_rqueue_lock(fbdev); r = fbdev->ctrl->mmap(info, vma); omapfb_rqueue_unlock(fbdev); return r; } /* * Callback table for the frame buffer framework. Some of these pointers * will be changed according to the current setting of fb_info->accel_flags. */ static struct fb_ops omapfb_ops = { .owner = THIS_MODULE, .fb_open = omapfb_open, .fb_release = omapfb_release, .fb_setcolreg = omapfb_setcolreg, .fb_setcmap = omapfb_setcmap, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, .fb_blank = omapfb_blank, .fb_ioctl = omapfb_ioctl, .fb_check_var = omapfb_check_var, .fb_set_par = omapfb_set_par, .fb_rotate = omapfb_rotate, .fb_pan_display = omapfb_pan_display, }; /* * --------------------------------------------------------------------------- * Sysfs interface * --------------------------------------------------------------------------- */ /* omapfbX sysfs entries */ static ssize_t omapfb_show_caps_num(struct device *dev, struct device_attribute *attr, char *buf) { struct omapfb_device *fbdev = dev_get_drvdata(dev); int plane; size_t size; struct omapfb_caps caps; plane = 0; size = 0; while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { omapfb_get_caps(fbdev, plane, &caps); size += snprintf(&buf[size], PAGE_SIZE - size, "plane#%d %#010x %#010x %#010x\n", plane, caps.ctrl, caps.plane_color, caps.wnd_color); plane++; } return size; } static ssize_t omapfb_show_caps_text(struct device *dev, struct device_attribute *attr, char *buf) { struct omapfb_device *fbdev = dev_get_drvdata(dev); int i; struct omapfb_caps caps; int plane; size_t size; plane = 0; size = 0; while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { omapfb_get_caps(fbdev, plane, &caps); size += snprintf(&buf[size], PAGE_SIZE - size, "plane#%d:\n", plane); for (i = 0; i < ARRAY_SIZE(ctrl_caps) && size < PAGE_SIZE; i++) { if (ctrl_caps[i].flag & caps.ctrl) size += snprintf(&buf[size], PAGE_SIZE - size, " %s\n", ctrl_caps[i].name); } size += snprintf(&buf[size], PAGE_SIZE - size, " plane colors:\n"); for (i = 0; i < ARRAY_SIZE(color_caps) && size < PAGE_SIZE; i++) { if (color_caps[i].flag & caps.plane_color) size += snprintf(&buf[size], PAGE_SIZE - size, " %s\n", color_caps[i].name); } size += snprintf(&buf[size], PAGE_SIZE - size, " window colors:\n"); for (i = 0; i < ARRAY_SIZE(color_caps) && size < PAGE_SIZE; i++) { if (color_caps[i].flag & caps.wnd_color) size += snprintf(&buf[size], PAGE_SIZE - size, " %s\n", color_caps[i].name); } plane++; } return size; } static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL); static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL); /* panel sysfs entries */ static ssize_t omapfb_show_panel_name(struct device *dev, struct device_attribute *attr, char *buf) { struct omapfb_device *fbdev = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name); } static ssize_t omapfb_show_bklight_level(struct device *dev, struct device_attribute *attr, char *buf) { struct omapfb_device *fbdev = dev_get_drvdata(dev); int r; if (fbdev->panel->get_bklight_level) { r = snprintf(buf, PAGE_SIZE, "%d\n", fbdev->panel->get_bklight_level(fbdev->panel)); } else r = -ENODEV; return r; } static ssize_t omapfb_store_bklight_level(struct device *dev, struct device_attribute *attr, const char *buf, size_t size) { struct omapfb_device *fbdev = dev_get_drvdata(dev); int r; if (fbdev->panel->set_bklight_level) { unsigned int level; if (sscanf(buf, "%10d", &level) == 1) { r = fbdev->panel->set_bklight_level(fbdev->panel, level); } else r = -EINVAL; } else r = -ENODEV; return r ? r : size; } static ssize_t omapfb_show_bklight_max(struct device *dev, struct device_attribute *attr, char *buf) { struct omapfb_device *fbdev = dev_get_drvdata(dev); int r; if (fbdev->panel->get_bklight_level) { r = snprintf(buf, PAGE_SIZE, "%d\n", fbdev->panel->get_bklight_max(fbdev->panel)); } else r = -ENODEV; return r; } static struct device_attribute dev_attr_panel_name = __ATTR(name, 0444, omapfb_show_panel_name, NULL); static DEVICE_ATTR(backlight_level, 0664, omapfb_show_bklight_level, omapfb_store_bklight_level); static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL); static struct attribute *panel_attrs[] = { &dev_attr_panel_name.attr, &dev_attr_backlight_level.attr, &dev_attr_backlight_max.attr, NULL, }; static struct attribute_group panel_attr_grp = { .name = "panel", .attrs = panel_attrs, }; /* ctrl sysfs entries */ static ssize_t omapfb_show_ctrl_name(struct device *dev, struct device_attribute *attr, char *buf) { struct omapfb_device *fbdev = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name); } static struct device_attribute dev_attr_ctrl_name = __ATTR(name, 0444, omapfb_show_ctrl_name, NULL); static struct attribute *ctrl_attrs[] = { &dev_attr_ctrl_name.attr, NULL, }; static struct attribute_group ctrl_attr_grp = { .name = "ctrl", .attrs = ctrl_attrs, }; static int omapfb_register_sysfs(struct omapfb_device *fbdev) { int r; if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num))) goto fail0; if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text))) goto fail1; if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp))) goto fail2; if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp))) goto fail3; return 0; fail3: sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); fail2: device_remove_file(fbdev->dev, &dev_attr_caps_text); fail1: device_remove_file(fbdev->dev, &dev_attr_caps_num); fail0: dev_err(fbdev->dev, "unable to register sysfs interface\n"); return r; } static void omapfb_unregister_sysfs(struct omapfb_device *fbdev) { sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp); sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); device_remove_file(fbdev->dev, &dev_attr_caps_num); device_remove_file(fbdev->dev, &dev_attr_caps_text); } /* * --------------------------------------------------------------------------- * LDM callbacks * --------------------------------------------------------------------------- */ /* Initialize system fb_info object and set the default video mode. * The frame buffer memory already allocated by lcddma_init */ static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info) { struct fb_var_screeninfo *var = &info->var; struct fb_fix_screeninfo *fix = &info->fix; int r = 0; info->fbops = &omapfb_ops; info->flags = FBINFO_FLAG_DEFAULT; strncpy(fix->id, MODULE_NAME, sizeof(fix->id)); info->pseudo_palette = fbdev->pseudo_palette; var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; var->xres = def_vxres; var->yres = def_vyres; var->xres_virtual = def_vxres; var->yres_virtual = def_vyres; var->rotate = def_rotate; var->bits_per_pixel = fbdev->panel->bpp; set_fb_var(info, var); set_fb_fix(info, 1); r = fb_alloc_cmap(&info->cmap, 16, 0); if (r != 0) dev_err(fbdev->dev, "unable to allocate color map memory\n"); return r; } /* Release the fb_info object */ static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) { fb_dealloc_cmap(&fbi->cmap); } static void planes_cleanup(struct omapfb_device *fbdev) { int i; for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { if (fbdev->fb_info[i] == NULL) break; fbinfo_cleanup(fbdev, fbdev->fb_info[i]); framebuffer_release(fbdev->fb_info[i]); } } static int planes_init(struct omapfb_device *fbdev) { struct fb_info *fbi; int i; int r; for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { struct omapfb_plane_struct *plane; fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct), fbdev->dev); if (fbi == NULL) { dev_err(fbdev->dev, "unable to allocate memory for plane info\n"); planes_cleanup(fbdev); return -ENOMEM; } plane = fbi->par; plane->idx = i; plane->fbdev = fbdev; plane->info.mirror = def_mirror; fbdev->fb_info[i] = fbi; if ((r = fbinfo_init(fbdev, fbi)) < 0) { framebuffer_release(fbi); planes_cleanup(fbdev); return r; } plane->info.out_width = fbi->var.xres; plane->info.out_height = fbi->var.yres; } return 0; } /* * Free driver resources. Can be called to rollback an aborted initialization * sequence. */ static void omapfb_free_resources(struct omapfb_device *fbdev, int state) { int i; switch (state) { case OMAPFB_ACTIVE: for (i = 0; i < fbdev->mem_desc.region_cnt; i++) unregister_framebuffer(fbdev->fb_info[i]); case 7: omapfb_unregister_sysfs(fbdev); case 6: fbdev->panel->disable(fbdev->panel); case 5: omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED); case 4: planes_cleanup(fbdev); case 3: ctrl_cleanup(fbdev); case 2: fbdev->panel->cleanup(fbdev->panel); case 1: dev_set_drvdata(fbdev->dev, NULL); kfree(fbdev); case 0: /* nothing to free */ break; default: BUG(); } } static int omapfb_find_ctrl(struct omapfb_device *fbdev) { struct omapfb_platform_data *conf; char name[17]; int i; conf = fbdev->dev->platform_data; fbdev->ctrl = NULL; strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1); name[sizeof(name) - 1] = '\0'; if (strcmp(name, "internal") == 0) { fbdev->ctrl = fbdev->int_ctrl; return 0; } for (i = 0; i < ARRAY_SIZE(ctrls); i++) { dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name); if (strcmp(ctrls[i]->name, name) == 0) { fbdev->ctrl = ctrls[i]; break; } } if (fbdev->ctrl == NULL) { dev_dbg(fbdev->dev, "ctrl %s not supported\n", name); return -1; } return 0; } static void check_required_callbacks(struct omapfb_device *fbdev) { #define _C(x) (fbdev->ctrl->x != NULL) #define _P(x) (fbdev->panel->x != NULL) BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL); BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) && _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) && _P(init) && _P(cleanup) && _P(enable) && _P(disable) && _P(get_caps))); #undef _P #undef _C } /* * Called by LDM binding to probe and attach a new device. * Initialization sequence: * 1. allocate system omapfb_device structure * 2. select controller type according to platform configuration * init LCD panel * 3. init LCD controller and LCD DMA * 4. init system fb_info structure for all planes * 5. setup video mode for first plane and enable it * 6. enable LCD panel * 7. register sysfs attributes * OMAPFB_ACTIVE: register system fb_info structure for all planes */ static int omapfb_do_probe(struct platform_device *pdev, struct lcd_panel *panel) { struct omapfb_device *fbdev = NULL; int init_state; unsigned long phz, hhz, vhz; unsigned long vram; int i; int r = 0; init_state = 0; if (pdev->num_resources != 0) { dev_err(&pdev->dev, "probed for an unknown device\n"); r = -ENODEV; goto cleanup; } if (pdev->dev.platform_data == NULL) { dev_err(&pdev->dev, "missing platform data\n"); r = -ENOENT; goto cleanup; } fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL); if (fbdev == NULL) { dev_err(&pdev->dev, "unable to allocate memory for device info\n"); r = -ENOMEM; goto cleanup; } init_state++; fbdev->dev = &pdev->dev; fbdev->panel = panel; fbdev->dssdev = &omapdss_device; platform_set_drvdata(pdev, fbdev); mutex_init(&fbdev->rqueue_mutex); fbdev->int_ctrl = &omap1_int_ctrl; #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL fbdev->ext_if = &omap1_ext_if; #endif if (omapfb_find_ctrl(fbdev) < 0) { dev_err(fbdev->dev, "LCD controller not found, board not supported\n"); r = -ENODEV; goto cleanup; } r = fbdev->panel->init(fbdev->panel, fbdev); if (r) goto cleanup; pr_info("omapfb: configured for panel %s\n", fbdev->panel->name); def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; init_state++; r = ctrl_init(fbdev); if (r) goto cleanup; if (fbdev->ctrl->mmap != NULL) omapfb_ops.fb_mmap = omapfb_mmap; init_state++; check_required_callbacks(fbdev); r = planes_init(fbdev); if (r) goto cleanup; init_state++; #ifdef CONFIG_FB_OMAP_DMA_TUNE /* Set DMA priority for EMIFF access to highest */ omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); #endif r = ctrl_change_mode(fbdev->fb_info[0]); if (r) { dev_err(fbdev->dev, "mode setting failed\n"); goto cleanup; } /* GFX plane is enabled by default */ r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); if (r) goto cleanup; omapfb_set_update_mode(fbdev, manual_update ? OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); init_state++; r = fbdev->panel->enable(fbdev->panel); if (r) goto cleanup; init_state++; r = omapfb_register_sysfs(fbdev); if (r) goto cleanup; init_state++; vram = 0; for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { r = register_framebuffer(fbdev->fb_info[i]); if (r != 0) { dev_err(fbdev->dev, "registering framebuffer %d failed\n", i); goto cleanup; } vram += fbdev->mem_desc.region[i].size; } fbdev->state = OMAPFB_ACTIVE; panel = fbdev->panel; phz = panel->pixel_clock * 1000; hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); omapfb_dev = fbdev; pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n", vram, fbdev->mem_desc.region_cnt); pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " "vfreq %lu.%lu Hz\n", phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); return 0; cleanup: omapfb_free_resources(fbdev, init_state); return r; } static int omapfb_probe(struct platform_device *pdev) { int r; BUG_ON(fbdev_pdev != NULL); r = platform_device_register(&omapdss_device); if (r) { dev_err(&pdev->dev, "can't register omapdss device\n"); return r; } /* Delay actual initialization until the LCD is registered */ fbdev_pdev = pdev; if (fbdev_panel != NULL) omapfb_do_probe(fbdev_pdev, fbdev_panel); return 0; } void omapfb_register_panel(struct lcd_panel *panel) { BUG_ON(fbdev_panel != NULL); fbdev_panel = panel; if (fbdev_pdev != NULL) omapfb_do_probe(fbdev_pdev, fbdev_panel); } /* Called when the device is being detached from the driver */ static int omapfb_remove(struct platform_device *pdev) { struct omapfb_device *fbdev = platform_get_drvdata(pdev); enum omapfb_state saved_state = fbdev->state; /* FIXME: wait till completion of pending events */ fbdev->state = OMAPFB_DISABLED; omapfb_free_resources(fbdev, saved_state); platform_device_unregister(&omapdss_device); fbdev->dssdev = NULL; return 0; } /* PM suspend */ static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) { struct omapfb_device *fbdev = platform_get_drvdata(pdev); if (fbdev != NULL) omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]); return 0; } /* PM resume */ static int omapfb_resume(struct platform_device *pdev) { struct omapfb_device *fbdev = platform_get_drvdata(pdev); if (fbdev != NULL) omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]); return 0; } static struct platform_driver omapfb_driver = { .probe = omapfb_probe, .remove = omapfb_remove, .suspend = omapfb_suspend, .resume = omapfb_resume, .driver = { .name = MODULE_NAME, .owner = THIS_MODULE, }, }; #ifndef MODULE /* Process kernel command line parameters */ static int __init omapfb_setup(char *options) { char *this_opt = NULL; int r = 0; pr_debug("omapfb: options %s\n", options); if (!options || !*options) return 0; while (!r && (this_opt = strsep(&options, ",")) != NULL) { if (!strncmp(this_opt, "accel", 5)) def_accel = 1; else if (!strncmp(this_opt, "vram:", 5)) { char *suffix; unsigned long vram; vram = (simple_strtoul(this_opt + 5, &suffix, 0)); switch (suffix[0]) { case '\0': break; case 'm': case 'M': vram *= 1024; /* Fall through */ case 'k': case 'K': vram *= 1024; break; default: pr_debug("omapfb: invalid vram suffix %c\n", suffix[0]); r = -1; } def_vram[def_vram_cnt++] = vram; } else if (!strncmp(this_opt, "vxres:", 6)) def_vxres = simple_strtoul(this_opt + 6, NULL, 0); else if (!strncmp(this_opt, "vyres:", 6)) def_vyres = simple_strtoul(this_opt + 6, NULL, 0); else if (!strncmp(this_opt, "rotate:", 7)) def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); else if (!strncmp(this_opt, "mirror:", 7)) def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); else if (!strncmp(this_opt, "manual_update", 13)) manual_update = 1; else { pr_debug("omapfb: invalid option\n"); r = -1; } } return r; } #endif /* Register both the driver and the device */ static int __init omapfb_init(void) { #ifndef MODULE char *option; if (fb_get_options("omapfb", &option)) return -ENODEV; omapfb_setup(option); #endif /* Register the driver with LDM */ if (platform_driver_register(&omapfb_driver)) { pr_debug("failed to register omapfb driver\n"); return -ENODEV; } return 0; } static void __exit omapfb_cleanup(void) { platform_driver_unregister(&omapfb_driver); } module_param_named(accel, def_accel, uint, 0664); module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); module_param_named(vxres, def_vxres, long, 0664); module_param_named(vyres, def_vyres, long, 0664); module_param_named(rotate, def_rotate, uint, 0664); module_param_named(mirror, def_mirror, uint, 0664); module_param_named(manual_update, manual_update, bool, 0664); module_init(omapfb_init); module_exit(omapfb_cleanup); MODULE_DESCRIPTION("TI OMAP framebuffer driver"); MODULE_AUTHOR("Imre Deak "); MODULE_LICENSE("GPL");