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staging: line6: add Pod HD300 support
The Pod HD device family uses new MIDI SysEx messages and therefore cannot reuse the existing Pod code. Instead of hardcoding Pod HD MIDI messages into the driver, leave MIDI up to userspace. This driver simply presents MIDI and pcm ALSA devices. This device is similar to the Pod except that it has 48 kHz audio and does not respond to Pod SysEx messages. Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Stefan Hajnoczi
authored and
Greg Kroah-Hartman
committed
Nov 27, 2011
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -12,4 +12,5 @@ line6usb-y := \ | |
| playback.o \ | ||
| pod.o \ | ||
| toneport.o \ | ||
| variax.o | ||
| variax.o \ | ||
| podhd.o | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| /* | ||
| * Line6 Pod HD | ||
| * | ||
| * Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com> | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License as | ||
| * published by the Free Software Foundation, version 2. | ||
| * | ||
| */ | ||
|
|
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| #include <sound/core.h> | ||
| #include <sound/pcm.h> | ||
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| #include "audio.h" | ||
| #include "driver.h" | ||
| #include "pcm.h" | ||
| #include "podhd.h" | ||
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| #define PODHD_BYTES_PER_FRAME 6 /* 24bit audio (stereo) */ | ||
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| static struct snd_ratden podhd_ratden = { | ||
| .num_min = 48000, | ||
| .num_max = 48000, | ||
| .num_step = 1, | ||
| .den = 1, | ||
| }; | ||
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| static struct line6_pcm_properties podhd_pcm_properties = { | ||
| .snd_line6_playback_hw = { | ||
| .info = (SNDRV_PCM_INFO_MMAP | | ||
| SNDRV_PCM_INFO_INTERLEAVED | | ||
| SNDRV_PCM_INFO_BLOCK_TRANSFER | | ||
| SNDRV_PCM_INFO_MMAP_VALID | | ||
| SNDRV_PCM_INFO_PAUSE | | ||
| #ifdef CONFIG_PM | ||
| SNDRV_PCM_INFO_RESUME | | ||
| #endif | ||
| SNDRV_PCM_INFO_SYNC_START), | ||
| .formats = SNDRV_PCM_FMTBIT_S24_3LE, | ||
| .rates = SNDRV_PCM_RATE_48000, | ||
| .rate_min = 48000, | ||
| .rate_max = 48000, | ||
| .channels_min = 2, | ||
| .channels_max = 2, | ||
| .buffer_bytes_max = 60000, | ||
| .period_bytes_min = 64, | ||
| .period_bytes_max = 8192, | ||
| .periods_min = 1, | ||
| .periods_max = 1024}, | ||
| .snd_line6_capture_hw = { | ||
| .info = (SNDRV_PCM_INFO_MMAP | | ||
| SNDRV_PCM_INFO_INTERLEAVED | | ||
| SNDRV_PCM_INFO_BLOCK_TRANSFER | | ||
| SNDRV_PCM_INFO_MMAP_VALID | | ||
| #ifdef CONFIG_PM | ||
| SNDRV_PCM_INFO_RESUME | | ||
| #endif | ||
| SNDRV_PCM_INFO_SYNC_START), | ||
| .formats = SNDRV_PCM_FMTBIT_S24_3LE, | ||
| .rates = SNDRV_PCM_RATE_48000, | ||
| .rate_min = 48000, | ||
| .rate_max = 48000, | ||
| .channels_min = 2, | ||
| .channels_max = 2, | ||
| .buffer_bytes_max = 60000, | ||
| .period_bytes_min = 64, | ||
| .period_bytes_max = 8192, | ||
| .periods_min = 1, | ||
| .periods_max = 1024}, | ||
| .snd_line6_rates = { | ||
| .nrats = 1, | ||
| .rats = &podhd_ratden}, | ||
| .bytes_per_frame = PODHD_BYTES_PER_FRAME | ||
| }; | ||
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|
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| /* | ||
| POD HD destructor. | ||
| */ | ||
| static void podhd_destruct(struct usb_interface *interface) | ||
| { | ||
| struct usb_line6_podhd *podhd = usb_get_intfdata(interface); | ||
| struct usb_line6 *line6; | ||
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| if (podhd == NULL) | ||
| return; | ||
| line6 = &podhd->line6; | ||
| if (line6 == NULL) | ||
| return; | ||
| line6_cleanup_audio(line6); | ||
| } | ||
|
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| /* | ||
| Try to init POD HD device. | ||
| */ | ||
| static int podhd_try_init(struct usb_interface *interface, | ||
| struct usb_line6_podhd *podhd) | ||
| { | ||
| int err; | ||
| struct usb_line6 *line6 = &podhd->line6; | ||
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| if ((interface == NULL) || (podhd == NULL)) | ||
| return -ENODEV; | ||
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| /* initialize audio system: */ | ||
| err = line6_init_audio(line6); | ||
| if (err < 0) | ||
| return err; | ||
|
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| /* initialize MIDI subsystem: */ | ||
| err = line6_init_midi(line6); | ||
| if (err < 0) | ||
| return err; | ||
|
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| /* initialize PCM subsystem: */ | ||
| err = line6_init_pcm(line6, &podhd_pcm_properties); | ||
| if (err < 0) | ||
| return err; | ||
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| /* register USB audio system: */ | ||
| err = line6_register_audio(line6); | ||
| return err; | ||
| } | ||
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| /* | ||
| Init POD HD device (and clean up in case of failure). | ||
| */ | ||
| int line6_podhd_init(struct usb_interface *interface, | ||
| struct usb_line6_podhd *podhd) | ||
| { | ||
| int err = podhd_try_init(interface, podhd); | ||
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| if (err < 0) | ||
| podhd_destruct(interface); | ||
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| return err; | ||
| } | ||
|
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| /* | ||
| POD HD device disconnected. | ||
| */ | ||
| void line6_podhd_disconnect(struct usb_interface *interface) | ||
| { | ||
| struct usb_line6_podhd *podhd; | ||
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| if (interface == NULL) | ||
| return; | ||
| podhd = usb_get_intfdata(interface); | ||
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| if (podhd != NULL) { | ||
| struct snd_line6_pcm *line6pcm = podhd->line6.line6pcm; | ||
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| if (line6pcm != NULL) | ||
| line6_pcm_disconnect(line6pcm); | ||
| } | ||
|
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| podhd_destruct(interface); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| /* | ||
| * Line6 Pod HD | ||
| * | ||
| * Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com> | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License as | ||
| * published by the Free Software Foundation, version 2. | ||
| * | ||
| */ | ||
|
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| #ifndef PODHD_H | ||
| #define PODHD_H | ||
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| #include <linux/usb.h> | ||
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| #include "driver.h" | ||
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| struct usb_line6_podhd { | ||
| /** | ||
| Generic Line6 USB data. | ||
| */ | ||
| struct usb_line6 line6; | ||
| }; | ||
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| extern void line6_podhd_disconnect(struct usb_interface *interface); | ||
| extern int line6_podhd_init(struct usb_interface *interface, | ||
| struct usb_line6_podhd *podhd); | ||
|
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| #endif /* PODHD_H */ |
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