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e7589271 FTS |
1 | /* |
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 | ||
28 | struct 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 | ||
55 | void 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) { | |
5dc5f618 FTS |
63 | if (pos->cleanup) |
64 | pos->cleanup(pos); | |
65 | ||
e7589271 | 66 | list_del(&pos->chain); |
5dc5f618 | 67 | kfree(pos->data); |
e7589271 FTS |
68 | kfree(pos); |
69 | } | |
70 | ||
71 | kfree(bus); | |
72 | } | |
5dc5f618 FTS |
73 | |
74 | const 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 | } |