1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> 4 */ 5 /* 6 * driver for Chrontel CH7301 DVI Transmitter 7 */ 8 9 #include <linux/slab.h> 10 #include "via_aux.h" 11 12 13 static const char *name = "CH7301 DVI Transmitter"; 14 15 16 static void probe(struct via_aux_bus *bus, u8 addr) 17 { 18 struct via_aux_drv drv = { 19 .bus = bus, 20 .addr = addr, 21 .name = name}; 22 u8 tmp; 23 24 if (!via_aux_read(&drv, 0x4B, &tmp, 1) || tmp != 0x17) 25 return; 26 27 printk(KERN_INFO "viafb: Found %s at address 0x%x\n", name, addr); 28 via_aux_add(&drv); 29 } 30 31 void via_aux_ch7301_probe(struct via_aux_bus *bus) 32 { 33 probe(bus, 0x75); 34 probe(bus, 0x76); 35 } 36