1 // SPDX-License-Identifier: GPL-2.0-or-later
4  * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com>
8  * simple-framebuffer probing
9  * Try to convert "screen_info" into a "simple-framebuffer" compatible mode.
26 /* try parsing screen_info into a simple-framebuffer mode struct */
34 	type = si->orig_video_isVGA;  in sysfb_parse_mode()
40 		if (si->lfb_depth == f->bits_per_pixel &&  in sysfb_parse_mode()
41 		    si->red_size == f->red.length &&  in sysfb_parse_mode()
42 		    si->red_pos == f->red.offset &&  in sysfb_parse_mode()
43 		    si->green_size == f->green.length &&  in sysfb_parse_mode()
44 		    si->green_pos == f->green.offset &&  in sysfb_parse_mode()
45 		    si->blue_size == f->blue.length &&  in sysfb_parse_mode()
46 		    si->blue_pos == f->blue.offset &&  in sysfb_parse_mode()
47 		    si->rsvd_size == f->transp.length &&  in sysfb_parse_mode()
48 		    si->rsvd_pos == f->transp.offset) {  in sysfb_parse_mode()
49 			mode->format = f->name;  in sysfb_parse_mode()
50 			mode->width = si->lfb_width;  in sysfb_parse_mode()
51 			mode->height = si->lfb_height;  in sysfb_parse_mode()
52 			mode->stride = si->lfb_linelength;  in sysfb_parse_mode()
74 	base = si->lfb_base;  in sysfb_create_simplefb()
75 	if (si->capabilities & VIDEO_CAPABILITY_64BIT_BASE)  in sysfb_create_simplefb()
76 		base |= (u64)si->ext_lfb_base << 32;  in sysfb_create_simplefb()
79 		return -EINVAL;  in sysfb_create_simplefb()
85 	 * need, that is, the part where the framebuffer is located. But verify  in sysfb_create_simplefb()
90 	size = si->lfb_size;  in sysfb_create_simplefb()
91 	if (si->orig_video_isVGA == VIDEO_TYPE_VLFB)  in sysfb_create_simplefb()
93 	length = mode->height * mode->stride;  in sysfb_create_simplefb()
96 		return -EINVAL;  in sysfb_create_simplefb()
100 	/* setup IORESOURCE_MEM as framebuffer memory */  in sysfb_create_simplefb()
105 	res.end = res.start + length - 1;  in sysfb_create_simplefb()
107 		return -EINVAL;  in sysfb_create_simplefb()
109 	pd = platform_device_alloc("simple-framebuffer", 0);  in sysfb_create_simplefb()
111 		return -ENOMEM;  in sysfb_create_simplefb()