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 } 51