diff options
Diffstat (limited to 'firmware/target/hosted/ibasso/dx50/audiohw-dx50.c')
-rw-r--r-- | firmware/target/hosted/ibasso/dx50/audiohw-dx50.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/firmware/target/hosted/ibasso/dx50/audiohw-dx50.c b/firmware/target/hosted/ibasso/dx50/audiohw-dx50.c new file mode 100644 index 0000000000..5e61348c8d --- /dev/null +++ b/firmware/target/hosted/ibasso/dx50/audiohw-dx50.c | |||
@@ -0,0 +1,68 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___ | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * | ||
9 | * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50 | ||
10 | * Copyright (C) 2014 by Mario Basister: iBasso DX90 port | ||
11 | * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features | ||
12 | * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | |||
25 | #include "config.h" | ||
26 | #include "debug.h" | ||
27 | |||
28 | #include "debug-ibasso.h" | ||
29 | #include "sysfs-ibasso.h" | ||
30 | |||
31 | |||
32 | extern void set_software_volume(void); | ||
33 | |||
34 | |||
35 | void audiohw_set_volume(int volume) | ||
36 | { | ||
37 | set_software_volume(); | ||
38 | |||
39 | /* | ||
40 | See codec-dx50.h. | ||
41 | -128db -> -1 (adjusted to 0, mute) | ||
42 | -127dB to 0dB -> 1 to 255 in steps of 2 | ||
43 | volume is in centibels (tenth-decibels). | ||
44 | */ | ||
45 | int volume_adjusted = (volume / 10) * 2 + 255; | ||
46 | |||
47 | DEBUGF("DEBUG %s: volume: %d, volume_adjusted: %d.", __func__, volume, volume_adjusted); | ||
48 | |||
49 | if(volume_adjusted > 255) | ||
50 | { | ||
51 | DEBUGF("DEBUG %s: Adjusting volume from %d to 255.", __func__, volume); | ||
52 | volume_adjusted = 255; | ||
53 | } | ||
54 | if(volume_adjusted < 0) | ||
55 | { | ||
56 | DEBUGF("DEBUG %s: Adjusting volume from %d to 0.", __func__, volume); | ||
57 | volume_adjusted = 0; | ||
58 | } | ||
59 | |||
60 | /* | ||
61 | /dev/codec_volume | ||
62 | 0 ... 255 | ||
63 | */ | ||
64 | if(! sysfs_set_int(SYSFS_DX50_CODEC_VOLUME, volume_adjusted)) | ||
65 | { | ||
66 | DEBUGF("ERROR %s: Can not set volume.", __func__); | ||
67 | } | ||
68 | } | ||