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 Silicon Image SiI 164 PanelLink 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 = "SiI 164 PanelLink Transmitter";
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun
probe(struct via_aux_bus * bus,u8 addr)16*4882a593Smuzhiyun static void probe(struct via_aux_bus *bus, u8 addr)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun struct via_aux_drv drv = {
19*4882a593Smuzhiyun .bus = bus,
20*4882a593Smuzhiyun .addr = addr,
21*4882a593Smuzhiyun .name = name};
22*4882a593Smuzhiyun /* check vendor id and device id */
23*4882a593Smuzhiyun const u8 id[] = {0x01, 0x00, 0x06, 0x00}, 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 at address 0x%x\n", name, addr);
30*4882a593Smuzhiyun via_aux_add(&drv);
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
via_aux_sii164_probe(struct via_aux_bus * bus)33*4882a593Smuzhiyun void via_aux_sii164_probe(struct via_aux_bus *bus)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun u8 i;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun for (i = 0x38; i <= 0x3F; i++)
38*4882a593Smuzhiyun probe(bus, i);
39*4882a593Smuzhiyun }
40