| Florian Tobias Schandinat | e7589271 | 2011-07-30 01:25:29 +0000 | [diff] [blame] | 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 VIA VT1632 DVI Transmitter |
| 22 | */ |
| 23 | |
| 24 | #include <linux/slab.h> |
| 25 | #include "via_aux.h" |
| 26 | |
| 27 | |
| 28 | static const char *name = "VT1632 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 | /* check vendor id and device id */ |
| 38 | const u8 id[] = {0x06, 0x11, 0x92, 0x31}, len = ARRAY_SIZE(id); |
| 39 | u8 tmp[len]; |
| 40 | |
| 41 | if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len)) |
| 42 | return; |
| 43 | |
| 44 | printk(KERN_INFO "viafb: Found %s at address 0x%x\n", name, addr); |
| 45 | via_aux_add(&drv); |
| 46 | } |
| 47 | |
| 48 | void via_aux_vt1632_probe(struct via_aux_bus *bus) |
| 49 | { |
| 50 | u8 i; |
| 51 | |
| 52 | for (i = 0x08; i <= 0x0F; i++) |
| 53 | probe(bus, i); |
| 54 | } |