Blame view

kernel/linux-rt-4.4.41/drivers/video/fbdev/via/via_aux_sii164.c 1.47 KB
5113f6f70   김현기   kernel add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
  /*
   * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public
   * License as published by the Free Software Foundation;
   * either version 2, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
   * the implied warranty of MERCHANTABILITY or FITNESS FOR
   * A PARTICULAR PURPOSE.See the GNU General Public License
   * for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc.,
   * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   */
  /*
   * 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[len];
  
  	if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len))
  		return;
  
  	printk(KERN_INFO "viafb: Found %s at address 0x%x
  ", 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);
  }