LXR linux/drivers/video/fbdev/via/via_aux

   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
  13static const char *name = "CH7301 DVI Transmitter";
  14
  15
  16static 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
  31void via_aux_ch7301_probe(struct via_aux_bus *bus)
  32{
  33        probe(bus, 0x75);
  34        probe(bus, 0x76);
  35}
  36