linux/linux-5.4.31/drivers/video/fbdev/via/via_aux_sii164.c

40 lines
834 B
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
*/
/*
* driver for Silicon Image SiI 164 PanelLink Transmitter
*/
#include <linux/slab.h>
#include "via_aux.h"
static const char *name = "SiI 164 PanelLink Transmitter";
static void probe(struct via_aux_bus *bus, u8 addr)
{
struct via_aux_drv drv = {
.bus = bus,
.addr = addr,
.name = name};
/* check vendor id and device id */
const u8 id[] = {0x01, 0x00, 0x06, 0x00}, 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 at address 0x%x\n", name, addr);
via_aux_add(&drv);
}
void via_aux_sii164_probe(struct via_aux_bus *bus)
{
u8 i;
for (i = 0x38; i <= 0x3F; i++)
probe(bus, i);
}