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 VT1631 LVDS Transmitter
7 */
8
9 #include <linux/slab.h>
10 #include "via_aux.h"
11
12
13 static const char *name = "VT1631 LVDS Transmitter";
14
15
via_aux_vt1631_probe(struct via_aux_bus * bus)16 void via_aux_vt1631_probe(struct via_aux_bus *bus)
17 {
18 struct via_aux_drv drv = {
19 .bus = bus,
20 .addr = 0x38,
21 .name = name};
22 /* check vendor id and device id */
23 const u8 id[] = {0x06, 0x11, 0x91, 0x31}, len = ARRAY_SIZE(id);
24 u8 tmp[ARRAY_SIZE(id)];
25
26 if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len))
27 return;
28
29 printk(KERN_INFO "viafb: Found %s\n", name);
30 via_aux_add(&drv);
31 }
32