1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun /*
6*4882a593Smuzhiyun * driver for VIA VT1631 LVDS Transmitter
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/slab.h>
10*4882a593Smuzhiyun #include "via_aux.h"
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun static const char *name = "VT1631 LVDS Transmitter";
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun
via_aux_vt1631_probe(struct via_aux_bus * bus)16*4882a593Smuzhiyun void via_aux_vt1631_probe(struct via_aux_bus *bus)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun struct via_aux_drv drv = {
19*4882a593Smuzhiyun .bus = bus,
20*4882a593Smuzhiyun .addr = 0x38,
21*4882a593Smuzhiyun .name = name};
22*4882a593Smuzhiyun /* check vendor id and device id */
23*4882a593Smuzhiyun const u8 id[] = {0x06, 0x11, 0x91, 0x31}, len = ARRAY_SIZE(id);
24*4882a593Smuzhiyun u8 tmp[ARRAY_SIZE(id)];
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len))
27*4882a593Smuzhiyun return;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun printk(KERN_INFO "viafb: Found %s\n", name);
30*4882a593Smuzhiyun via_aux_add(&drv);
31*4882a593Smuzhiyun }
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