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e7589271 FTS |
1 | /* |
2 | * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License as published by the Free Software Foundation; | |
7 | * either version 2, or (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even | |
11 | * the implied warranty of MERCHANTABILITY or FITNESS FOR | |
12 | * A PARTICULAR PURPOSE.See the GNU General Public License | |
13 | * for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., | |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | /* | |
21 | * driver for Chrontel CH7301 DVI Transmitter | |
22 | */ | |
23 | ||
24 | #include <linux/slab.h> | |
25 | #include "via_aux.h" | |
26 | ||
27 | ||
28 | static const char *name = "CH7301 DVI Transmitter"; | |
29 | ||
30 | ||
31 | static void probe(struct via_aux_bus *bus, u8 addr) | |
32 | { | |
33 | struct via_aux_drv drv = { | |
34 | .bus = bus, | |
35 | .addr = addr, | |
36 | .name = name}; | |
37 | u8 tmp; | |
38 | ||
39 | if (!via_aux_read(&drv, 0x4B, &tmp, 1) || tmp != 0x17) | |
40 | return; | |
41 | ||
42 | printk(KERN_INFO "viafb: Found %s at address 0x%x\n", name, addr); | |
43 | via_aux_add(&drv); | |
44 | } | |
45 | ||
46 | void via_aux_ch7301_probe(struct via_aux_bus *bus) | |
47 | { | |
48 | probe(bus, 0x75); | |
49 | probe(bus, 0x76); | |
50 | } |