1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
4 */
5/*
6 * driver for VIA VT1632 DVI Transmitter
7 */
8
9#include <linux/slab.h>
10#include "via_aux.h"
11
12
13static const char *name = "VT1632 DVI Transmitter";
14
15
16static void probe(struct via_aux_bus *bus, u8 addr)
17{
18 struct via_aux_drv drv = {
19 .bus = bus,
20 .addr = addr,
21 .name = name};
22 /* check vendor id and device id */
23 const u8 id[] = {0x06, 0x11, 0x92, 0x31}, len = ARRAY_SIZE(id);
24 u8 tmp[ARRAY_SIZE(id)];
25
26 if (!via_aux_read(drv: &drv, start: 0x00, buf: tmp, len) || memcmp(p: id, q: tmp, size: len))
27 return;
28
29 printk(KERN_INFO "viafb: Found %s at address 0x%x\n", name, addr);
30 via_aux_add(drv: &drv);
31}
32
33void via_aux_vt1632_probe(struct via_aux_bus *bus)
34{
35 u8 i;
36
37 for (i = 0x08; i <= 0x0F; i++)
38 probe(bus, addr: i);
39}
40

source code of linux/drivers/video/fbdev/via/via_aux_vt1632.c