| Stefan Hajnoczi | 16dc104 | 2011-11-23 08:20:42 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Line6 Pod HD |
| 3 | * |
| 4 | * Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License as |
| 8 | * published by the Free Software Foundation, version 2. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <sound/core.h> |
| 13 | #include <sound/pcm.h> |
| 14 | |
| 15 | #include "audio.h" |
| 16 | #include "driver.h" |
| 17 | #include "pcm.h" |
| 18 | #include "podhd.h" |
| 19 | |
| 20 | #define PODHD_BYTES_PER_FRAME 6 /* 24bit audio (stereo) */ |
| 21 | |
| 22 | static struct snd_ratden podhd_ratden = { |
| 23 | .num_min = 48000, |
| 24 | .num_max = 48000, |
| 25 | .num_step = 1, |
| 26 | .den = 1, |
| 27 | }; |
| 28 | |
| 29 | static struct line6_pcm_properties podhd_pcm_properties = { |
| 30 | .snd_line6_playback_hw = { |
| 31 | .info = (SNDRV_PCM_INFO_MMAP | |
| 32 | SNDRV_PCM_INFO_INTERLEAVED | |
| 33 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 34 | SNDRV_PCM_INFO_MMAP_VALID | |
| 35 | SNDRV_PCM_INFO_PAUSE | |
| 36 | #ifdef CONFIG_PM |
| 37 | SNDRV_PCM_INFO_RESUME | |
| 38 | #endif |
| 39 | SNDRV_PCM_INFO_SYNC_START), |
| 40 | .formats = SNDRV_PCM_FMTBIT_S24_3LE, |
| 41 | .rates = SNDRV_PCM_RATE_48000, |
| 42 | .rate_min = 48000, |
| 43 | .rate_max = 48000, |
| 44 | .channels_min = 2, |
| 45 | .channels_max = 2, |
| 46 | .buffer_bytes_max = 60000, |
| 47 | .period_bytes_min = 64, |
| 48 | .period_bytes_max = 8192, |
| 49 | .periods_min = 1, |
| 50 | .periods_max = 1024}, |
| 51 | .snd_line6_capture_hw = { |
| 52 | .info = (SNDRV_PCM_INFO_MMAP | |
| 53 | SNDRV_PCM_INFO_INTERLEAVED | |
| 54 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 55 | SNDRV_PCM_INFO_MMAP_VALID | |
| 56 | #ifdef CONFIG_PM |
| 57 | SNDRV_PCM_INFO_RESUME | |
| 58 | #endif |
| 59 | SNDRV_PCM_INFO_SYNC_START), |
| 60 | .formats = SNDRV_PCM_FMTBIT_S24_3LE, |
| 61 | .rates = SNDRV_PCM_RATE_48000, |
| 62 | .rate_min = 48000, |
| 63 | .rate_max = 48000, |
| 64 | .channels_min = 2, |
| 65 | .channels_max = 2, |
| 66 | .buffer_bytes_max = 60000, |
| 67 | .period_bytes_min = 64, |
| 68 | .period_bytes_max = 8192, |
| 69 | .periods_min = 1, |
| 70 | .periods_max = 1024}, |
| 71 | .snd_line6_rates = { |
| 72 | .nrats = 1, |
| 73 | .rats = &podhd_ratden}, |
| 74 | .bytes_per_frame = PODHD_BYTES_PER_FRAME |
| 75 | }; |
| 76 | |
| 77 | /* |
| 78 | POD HD destructor. |
| 79 | */ |
| 80 | static void podhd_destruct(struct usb_interface *interface) |
| 81 | { |
| 82 | struct usb_line6_podhd *podhd = usb_get_intfdata(interface); |
| 83 | struct usb_line6 *line6; |
| 84 | |
| 85 | if (podhd == NULL) |
| 86 | return; |
| 87 | line6 = &podhd->line6; |
| 88 | if (line6 == NULL) |
| 89 | return; |
| 90 | line6_cleanup_audio(line6); |
| 91 | } |
| 92 | |
| 93 | /* |
| 94 | Try to init POD HD device. |
| 95 | */ |
| 96 | static int podhd_try_init(struct usb_interface *interface, |
| 97 | struct usb_line6_podhd *podhd) |
| 98 | { |
| 99 | int err; |
| 100 | struct usb_line6 *line6 = &podhd->line6; |
| 101 | |
| 102 | if ((interface == NULL) || (podhd == NULL)) |
| 103 | return -ENODEV; |
| 104 | |
| 105 | /* initialize audio system: */ |
| 106 | err = line6_init_audio(line6); |
| 107 | if (err < 0) |
| 108 | return err; |
| 109 | |
| 110 | /* initialize MIDI subsystem: */ |
| 111 | err = line6_init_midi(line6); |
| 112 | if (err < 0) |
| 113 | return err; |
| 114 | |
| 115 | /* initialize PCM subsystem: */ |
| 116 | err = line6_init_pcm(line6, &podhd_pcm_properties); |
| 117 | if (err < 0) |
| 118 | return err; |
| 119 | |
| 120 | /* register USB audio system: */ |
| 121 | err = line6_register_audio(line6); |
| 122 | return err; |
| 123 | } |
| 124 | |
| 125 | /* |
| 126 | Init POD HD device (and clean up in case of failure). |
| 127 | */ |
| 128 | int line6_podhd_init(struct usb_interface *interface, |
| 129 | struct usb_line6_podhd *podhd) |
| 130 | { |
| 131 | int err = podhd_try_init(interface, podhd); |
| 132 | |
| 133 | if (err < 0) |
| 134 | podhd_destruct(interface); |
| 135 | |
| 136 | return err; |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | POD HD device disconnected. |
| 141 | */ |
| 142 | void line6_podhd_disconnect(struct usb_interface *interface) |
| 143 | { |
| 144 | struct usb_line6_podhd *podhd; |
| 145 | |
| 146 | if (interface == NULL) |
| 147 | return; |
| 148 | podhd = usb_get_intfdata(interface); |
| 149 | |
| 150 | if (podhd != NULL) { |
| 151 | struct snd_line6_pcm *line6pcm = podhd->line6.line6pcm; |
| 152 | |
| 153 | if (line6pcm != NULL) |
| 154 | line6_pcm_disconnect(line6pcm); |
| 155 | } |
| 156 | |
| 157 | podhd_destruct(interface); |
| 158 | } |