fbdev/core/fbsysfs.c

17 static int activate(struct fb_info *fb_info, struct fb_var_screeninfo *var)
23 	lock_fb_info(fb_info);
24 	err = fb_set_var(fb_info, var);
26 		fbcon_update_vcs(fb_info, var->activate & FB_ACTIVATE_ALL);
27 	unlock_fb_info(fb_info);
59 	struct fb_info *fb_info = dev_get_drvdata(device);
69 	list_for_each_entry(modelist, &fb_info->modelist, list) {
74 			var = fb_info->var;
76 			if ((err = activate(fb_info, &var)))
78 			fb_info->mode = mode;
88 	struct fb_info *fb_info = dev_get_drvdata(device);
90 	if (!fb_info->mode)
93 	return mode_string(buf, 0, fb_info->mode);
100 	struct fb_info *fb_info = dev_get_drvdata(device);
108 	lock_fb_info(fb_info);
110 	list_splice(&fb_info->modelist, &old_list);
112 				 &fb_info->modelist);
113 	if (fb_new_modelist(fb_info)) {
114 		fb_destroy_modelist(&fb_info->modelist);
115 		list_splice(&old_list, &fb_info->modelist);
119 	unlock_fb_info(fb_info);
128 	struct fb_info *fb_info = dev_get_drvdata(device);
134 	list_for_each_entry(modelist, &fb_info->modelist, list) {
144 	struct fb_info *fb_info = dev_get_drvdata(device);
149 	var = fb_info->var;
151 	if ((err = activate(fb_info, &var)))
159 	struct fb_info *fb_info = dev_get_drvdata(device);
160 	return sysfs_emit(buf, "%d\n", fb_info->var.bits_per_pixel);
167 	struct fb_info *fb_info = dev_get_drvdata(device);
172 	var = fb_info->var;
175 	if ((err = activate(fb_info, &var)))
185 	struct fb_info *fb_info = dev_get_drvdata(device);
187 	return sysfs_emit(buf, "%d\n", fb_info->var.rotate);
194 	struct fb_info *fb_info = dev_get_drvdata(device);
199 	var = fb_info->var;
206 	if ((err = activate(fb_info, &var)))
214 	struct fb_info *fb_info = dev_get_drvdata(device);
215 	return sysfs_emit(buf, "%d,%d\n", fb_info->var.xres_virtual,
216 			fb_info->var.yres_virtual);
222 	struct fb_info *fb_info = dev_get_drvdata(device);
223 	return sysfs_emit(buf, "%d\n", fb_info->fix.line_length);
230 	struct fb_info *fb_info = dev_get_drvdata(device);
236 	err = fb_blank(fb_info, arg);
238 	fbcon_fb_blanked(fb_info, arg);
248 //	struct fb_info *fb_info = dev_get_drvdata(device);
256 //	struct fb_info *fb_info = dev_get_drvdata(device);
263 //	struct fb_info *fb_info = dev_get_drvdata(device);
271 //	struct fb_info *fb_info = dev_get_drvdata(device);
278 //	struct fb_info *fb_info = dev_get_drvdata(device);
286 	struct fb_info *fb_info = dev_get_drvdata(device);
291 	var = fb_info->var;
299 	err = fb_pan_display(fb_info, &var);
310 	struct fb_info *fb_info = dev_get_drvdata(device);
311 	return sysfs_emit(buf, "%d,%d\n", fb_info->var.xoffset,
312 			fb_info->var.yoffset);
318 	struct fb_info *fb_info = dev_get_drvdata(device);
320 	return sysfs_emit(buf, "%s\n", fb_info->fix.id);
327 	struct fb_info *fb_info = dev_get_drvdata(device);
334 	lock_fb_info(fb_info);
336 	fb_set_suspend(fb_info, (int)state);
338 	unlock_fb_info(fb_info);
347 	struct fb_info *fb_info = dev_get_drvdata(device);
348 	return sysfs_emit(buf, "%d\n", fb_info->state);
356 	struct fb_info *fb_info = dev_get_drvdata(device);
363 	if (!fb_info || !fb_info->bl_dev)
385 	mutex_lock(&fb_info->bl_curve_mutex);
387 		fb_info->bl_curve[i] = tmp_curve[i];
388 	mutex_unlock(&fb_info->bl_curve_mutex);
396 	struct fb_info *fb_info = dev_get_drvdata(device);
403 	if (!fb_info || !fb_info->bl_dev)
406 	mutex_lock(&fb_info->bl_curve_mutex);
409 				fb_info->bl_curve + i);
410 	mutex_unlock(&fb_info->bl_curve_mutex);
437 static int fb_init_device(struct fb_info *fb_info)
441 	dev_set_drvdata(fb_info->dev, fb_info);
443 	fb_info->class_flag |= FB_SYSFS_FLAG_ATTR;
446 		error = device_create_file(fb_info->dev, &device_attrs[i]);
454 			device_remove_file(fb_info->dev, &device_attrs[i]);
455 		fb_info->class_flag &= ~FB_SYSFS_FLAG_ATTR;
461 static void fb_cleanup_device(struct fb_info *fb_info)
465 	if (fb_info->class_flag & FB_SYSFS_FLAG_ATTR) {
467 			device_remove_file(fb_info->dev, &device_attrs[i]);
469 		fb_info->class_flag &= ~FB_SYSFS_FLAG_ATTR;
473 int fb_device_create(struct fb_info *fb_info)
475 	int node = fb_info->node;
479 	fb_info->dev = device_create(fb_class, fb_info->device, devt, NULL, "fb%d", node);
480 	if (IS_ERR(fb_info->dev)) {
482 		ret = PTR_ERR(fb_info->dev);
484 		fb_info->dev = NULL;
486 		fb_init_device(fb_info);
492 void fb_device_destroy(struct fb_info *fb_info)
494 	dev_t devt = MKDEV(FB_MAJOR, fb_info->node);
496 	if (!fb_info->dev)
499 	fb_cleanup_device(fb_info);
501 	fb_info->dev = NULL;