blob: 4a0a55cdac3db56dbe2a94e6caa01af69d3fc449 [file] [log] [blame]
Florian Tobias Schandinate75892712011-07-30 01:25:29 +00001/*
2 * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License as published by the Free Software Foundation;
7 * either version 2, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
11 * the implied warranty of MERCHANTABILITY or FITNESS FOR
12 * A PARTICULAR PURPOSE.See the GNU General Public License
13 * for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20/*
21 * infrastructure for devices connected via I2C
22 */
23
24#include <linux/slab.h>
25#include "via_aux.h"
26
27
28struct via_aux_bus *via_aux_probe(struct i2c_adapter *adap)
29{
30 struct via_aux_bus *bus;
31
32 if (!adap)
33 return NULL;
34
35 bus = kmalloc(sizeof(*bus), GFP_KERNEL);
36 if (!bus)
37 return NULL;
38
39 bus->adap = adap;
40 INIT_LIST_HEAD(&bus->drivers);
41
42 via_aux_edid_probe(bus);
43 via_aux_vt1636_probe(bus);
44 via_aux_vt1632_probe(bus);
45 via_aux_vt1631_probe(bus);
46 via_aux_vt1625_probe(bus);
47 via_aux_vt1622_probe(bus);
48 via_aux_vt1621_probe(bus);
49 via_aux_sii164_probe(bus);
50 via_aux_ch7301_probe(bus);
51
52 return bus;
53}
54
55void via_aux_free(struct via_aux_bus *bus)
56{
57 struct via_aux_drv *pos, *n;
58
59 if (!bus)
60 return;
61
62 list_for_each_entry_safe(pos, n, &bus->drivers, chain) {
Florian Tobias Schandinat5dc5f612012-01-12 12:52:37 +000063 if (pos->cleanup)
64 pos->cleanup(pos);
65
Florian Tobias Schandinate75892712011-07-30 01:25:29 +000066 list_del(&pos->chain);
Florian Tobias Schandinat5dc5f612012-01-12 12:52:37 +000067 kfree(pos->data);
Florian Tobias Schandinate75892712011-07-30 01:25:29 +000068 kfree(pos);
69 }
70
71 kfree(bus);
72}
Florian Tobias Schandinat5dc5f612012-01-12 12:52:37 +000073
74const struct fb_videomode *via_aux_get_preferred_mode(struct via_aux_bus *bus)
75{
76 struct via_aux_drv *pos;
77 const struct fb_videomode *mode = NULL;
78
79 if (!bus)
80 return NULL;
81
82 list_for_each_entry(pos, &bus->drivers, chain) {
83 if (pos->get_preferred_mode)
84 mode = pos->get_preferred_mode(pos);
85 }
86
87 return mode;
88}