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 Silicon Image SiI 164 PanelLink Transmitter 22 */ 23 24 #include <linux/slab.h> 25 #include "via_aux.h" 26 27 28 static const char *name = "SiI 164 PanelLink 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[] = {0x01, 0x00, 0x06, 0x00}, 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_sii164_probe(struct via_aux_bus *bus) 49 { 50 u8 i; 51 52 for (i = 0x38; i <= 0x3F; i++) 53 probe(bus, i); 54 } 55