static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) { struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omapfb2_mem_region *rg; int r, i; size_t size; if (mi->type > OMAPFB_MEMTYPE_MAX) return -EINVAL; size = PAGE_ALIGN(mi->size); rg = &ofbi->region; for (i = 0; i < ofbi->num_overlays; i++) { if (ofbi->overlays[i]->info.enabled) return -EBUSY; } if (rg->size != size || rg->type != mi->type) { r = omapfb_realloc_fbmem(fbi, size, mi->type); if (r) { dev_err(fbdev->dev, "realloc fbmem failed\n"); return r; } } return 0; }
static ssize_t store_size(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fb_info *fbi = dev_get_drvdata(dev); struct omapfb_info *ofbi = FB2OFB(fbi); unsigned long size; int r; int i; size = PAGE_ALIGN(simple_strtoul(buf, NULL, 0)); if (!lock_fb_info(fbi)) return -ENODEV; for (i = 0; i < ofbi->num_overlays; i++) { if (ofbi->overlays[i]->info.enabled) { r = -EBUSY; goto out; } } if (size != ofbi->region.size) { r = omapfb_realloc_fbmem(fbi, size, ofbi->region.type); if (r) { dev_err(dev, "realloc fbmem failed\n"); goto out; } } r = count; out: unlock_fb_info(fbi); return r; }
static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) { struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omap_dss_device *display = fb2display(fbi); struct omapfb2_mem_region *rg; int r = 0, i; size_t size; if (mi->type != OMAPFB_MEMTYPE_SDRAM) return -EINVAL; size = PAGE_ALIGN(mi->size); if (display && display->driver->sync) display->driver->sync(display); rg = ofbi->region; down_write_nested(&rg->lock, rg->id); atomic_inc(&rg->lock_count); if (rg->size == size && rg->type == mi->type) goto out; if (atomic_read(&rg->map_count)) { r = -EBUSY; goto out; } for (i = 0; i < fbdev->num_fbs; i++) { struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]); int j; if (ofbi2->region != rg) continue; for (j = 0; j < ofbi2->num_overlays; j++) { struct omap_overlay *ovl; ovl = ofbi2->overlays[j]; if (ovl->is_enabled(ovl)) { r = -EBUSY; goto out; } } } r = omapfb_realloc_fbmem(fbi, size, mi->type); if (r) { dev_err(fbdev->dev, "realloc fbmem failed\n"); goto out; } out: atomic_dec(&rg->lock_count); up_write(&rg->lock); return r; }
static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) { struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omapfb2_mem_region *rg; int r = 0, i; size_t size; if (mi->type > OMAPFB_MEMTYPE_MAX) return -EINVAL; size = PAGE_ALIGN(mi->size); rg = ofbi->region; down_write_nested(&rg->lock, rg->id); atomic_inc(&rg->lock_count); if (atomic_read(&rg->map_count)) { r = -EBUSY; goto out; } for (i = 0; i < fbdev->num_fbs; i++) { struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]); int j; if (ofbi2->region != rg) continue; for (j = 0; j < ofbi2->num_overlays; j++) { if (ofbi2->overlays[j]->info.enabled) { r = -EBUSY; goto out; } } } if (rg->size != size || rg->type != mi->type) { r = omapfb_realloc_fbmem(fbi, size, mi->type); if (r) { dev_err(fbdev->dev, "realloc fbmem failed\n"); goto out; } } out: atomic_dec(&rg->lock_count); up_write(&rg->lock); return r; }
static ssize_t store_size(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fb_info *fbi = dev_get_drvdata(dev); struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omap_dss_device *display = fb2display(fbi); struct omapfb2_mem_region *rg; unsigned long size; int r; int i; r = kstrtoul(buf, 0, &size); if (r) return r; size = PAGE_ALIGN(size); if (!lock_fb_info(fbi)) return -ENODEV; if (display && display->driver->sync) display->driver->sync(display); rg = ofbi->region; down_write_nested(&rg->lock, rg->id); atomic_inc(&rg->lock_count); if (atomic_read(&rg->map_count)) { r = -EBUSY; goto out; } for (i = 0; i < fbdev->num_fbs; i++) { struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]); int j; if (ofbi2->region != rg) continue; for (j = 0; j < ofbi2->num_overlays; j++) { struct omap_overlay *ovl; ovl = ofbi2->overlays[j]; if (ovl->is_enabled(ovl)) { r = -EBUSY; goto out; } } } if (size != ofbi->region->size) { r = omapfb_realloc_fbmem(fbi, size, ofbi->region->type); if (r) { dev_err(dev, "realloc fbmem failed\n"); goto out; } } r = count; out: atomic_dec(&rg->lock_count); up_write(&rg->lock); unlock_fb_info(fbi); return r; }
static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) { struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omapfb2_mem_region *rg; struct omap_display *display = fb2display(fbi); int r, i; size_t size; if (mi->type > OMAPFB_MEMTYPE_MAX) return -EINVAL; size = PAGE_ALIGN(mi->size); rg = &ofbi->region; omapfb_lock(fbdev); for (i = 0; i < ofbi->num_overlays; i++) { if (ofbi->overlays[i]->info.enabled) { r = -EBUSY; goto out; } } if (rg->size != size || rg->type != mi->type) { struct fb_var_screeninfo new_var; unsigned long old_size = rg->size; if (display->sync) display->sync(display); r = omapfb_realloc_fbmem(fbdev, ofbi->id, size); if (r) goto out; if (old_size != size) { if (size) { memcpy(&new_var, &fbi->var, sizeof(new_var)); r = check_fb_var(fbi, &new_var); if (r < 0) goto out; memcpy(&fbi->var, &new_var, sizeof(fbi->var)); set_fb_fix(fbi); } else { /* * Set these explicitly to indicate that the * plane memory is dealloce'd, the other * screen parameters in var / fix are invalid. */ fbi->fix.smem_start = 0; fbi->fix.smem_len = 0; } } } r = 0; out: omapfb_unlock(fbdev); return r; }