linux/linux-5.4.31/drivers/video/fbdev/via/via_aux_vt1636.c

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2024-01-30 10:43:28 +00:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
*/
/*
* driver for VIA VT1636 LVDS Transmitter
*/
#include <linux/slab.h>
#include "via_aux.h"
static const char *name = "VT1636 LVDS Transmitter";
void via_aux_vt1636_probe(struct via_aux_bus *bus)
{
struct via_aux_drv drv = {
.bus = bus,
.addr = 0x40,
.name = name};
/* check vendor id and device id */
const u8 id[] = {0x06, 0x11, 0x45, 0x33}, len = ARRAY_SIZE(id);
u8 tmp[ARRAY_SIZE(id)];
if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len))
return;
printk(KERN_INFO "viafb: Found %s\n", name);
via_aux_add(&drv);
}