diff options
Diffstat (limited to 'firmware/drivers/audio')
-rw-r--r-- | firmware/drivers/audio/rocker_codec.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/firmware/drivers/audio/rocker_codec.c b/firmware/drivers/audio/rocker_codec.c new file mode 100644 index 0000000000..23541a4ddb --- /dev/null +++ b/firmware/drivers/audio/rocker_codec.c | |||
@@ -0,0 +1,77 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * | ||
11 | * Copyright (c) 2018 Marcin Bukat | ||
12 | * | ||
13 | * This program is free software; you can redistribute it and/or | ||
14 | * modify it under the terms of the GNU General Public License | ||
15 | * as published by the Free Software Foundation; either version 2 | ||
16 | * of the License, or (at your option) any later version. | ||
17 | * | ||
18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
19 | * KIND, either express or implied. | ||
20 | * | ||
21 | ****************************************************************************/ | ||
22 | |||
23 | #include "config.h" | ||
24 | #include "audio.h" | ||
25 | #include "audiohw.h" | ||
26 | #include "system.h" | ||
27 | #include "panic.h" | ||
28 | #include "alsa-controls.h" | ||
29 | |||
30 | static int fd_hw; | ||
31 | |||
32 | static void hw_open(void) | ||
33 | { | ||
34 | fd_hw = open("/dev/snd/controlC0", O_RDWR); | ||
35 | if(fd_hw < 0) | ||
36 | panicf("Cannot open '/dev/snd/controlC0'"); | ||
37 | } | ||
38 | |||
39 | static void hw_close(void) | ||
40 | { | ||
41 | close(fd_hw); | ||
42 | } | ||
43 | |||
44 | void audiohw_preinit(void) | ||
45 | { | ||
46 | long int hp = 2; | ||
47 | |||
48 | alsa_controls_init(); | ||
49 | hw_open(); | ||
50 | |||
51 | /* Output port switch set to Headphones */ | ||
52 | alsa_controls_set_ints("Output Port Switch", 1, &hp); | ||
53 | } | ||
54 | |||
55 | void audiohw_postinit(void) | ||
56 | { | ||
57 | } | ||
58 | |||
59 | void audiohw_close(void) | ||
60 | { | ||
61 | hw_close(); | ||
62 | alsa_controls_close(); | ||
63 | } | ||
64 | |||
65 | void audiohw_set_frequency(int fsel) | ||
66 | { | ||
67 | (void)fsel; | ||
68 | } | ||
69 | |||
70 | void audiohw_set_volume(int vol_l, int vol_r) | ||
71 | { | ||
72 | long int vol_l_hw = -vol_l/5; | ||
73 | long int vol_r_hw = -vol_r/5; | ||
74 | |||
75 | alsa_controls_set_ints("Left Playback Volume", 1, &vol_l_hw); | ||
76 | alsa_controls_set_ints("Right Playback Volume", 1, &vol_r_hw); | ||
77 | } | ||