162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci/* 662306a36Sopenharmony_ci * driver for VIA VT1632 DVI Transmitter 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#include <linux/slab.h> 1062306a36Sopenharmony_ci#include "via_aux.h" 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_cistatic const char *name = "VT1632 DVI Transmitter"; 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_cistatic void probe(struct via_aux_bus *bus, u8 addr) 1762306a36Sopenharmony_ci{ 1862306a36Sopenharmony_ci struct via_aux_drv drv = { 1962306a36Sopenharmony_ci .bus = bus, 2062306a36Sopenharmony_ci .addr = addr, 2162306a36Sopenharmony_ci .name = name}; 2262306a36Sopenharmony_ci /* check vendor id and device id */ 2362306a36Sopenharmony_ci const u8 id[] = {0x06, 0x11, 0x92, 0x31}, len = ARRAY_SIZE(id); 2462306a36Sopenharmony_ci u8 tmp[ARRAY_SIZE(id)]; 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len)) 2762306a36Sopenharmony_ci return; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci printk(KERN_INFO "viafb: Found %s at address 0x%x\n", name, addr); 3062306a36Sopenharmony_ci via_aux_add(&drv); 3162306a36Sopenharmony_ci} 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_civoid via_aux_vt1632_probe(struct via_aux_bus *bus) 3462306a36Sopenharmony_ci{ 3562306a36Sopenharmony_ci u8 i; 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci for (i = 0x08; i <= 0x0F; i++) 3862306a36Sopenharmony_ci probe(bus, i); 3962306a36Sopenharmony_ci} 40