diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/sound/usb/6fire/pcm.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/sound/usb/6fire/pcm.h')
| -rw-r--r-- | kernel/sound/usb/6fire/pcm.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/kernel/sound/usb/6fire/pcm.h b/kernel/sound/usb/6fire/pcm.h new file mode 100644 index 000000000..f5779d618 --- /dev/null +++ b/kernel/sound/usb/6fire/pcm.h @@ -0,0 +1,75 @@ +/* + * Linux driver for TerraTec DMX 6Fire USB + * + * Author: Torsten Schenk <torsten.schenk@zoho.com> + * Created: Jan 01, 2011 + * Copyright: (C) Torsten Schenk + * + * 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; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef USB6FIRE_PCM_H +#define USB6FIRE_PCM_H + +#include <sound/pcm.h> +#include <linux/mutex.h> + +#include "common.h" + +enum /* settings for pcm */ +{ + /* maximum of EP_W_MAX_PACKET_SIZE[] (see firmware.c) */ + PCM_N_URBS = 16, PCM_N_PACKETS_PER_URB = 8, PCM_MAX_PACKET_SIZE = 604 +}; + +struct pcm_urb { + struct sfire_chip *chip; + + /* BEGIN DO NOT SEPARATE */ + struct urb instance; + struct usb_iso_packet_descriptor packets[PCM_N_PACKETS_PER_URB]; + /* END DO NOT SEPARATE */ + u8 *buffer; + + struct pcm_urb *peer; +}; + +struct pcm_substream { + spinlock_t lock; + struct snd_pcm_substream *instance; + + bool active; + + snd_pcm_uframes_t dma_off; /* current position in alsa dma_area */ + snd_pcm_uframes_t period_off; /* current position in current period */ +}; + +struct pcm_runtime { + struct sfire_chip *chip; + struct snd_pcm *instance; + + struct pcm_substream playback; + struct pcm_substream capture; + bool panic; /* if set driver won't do anymore pcm on device */ + + struct pcm_urb in_urbs[PCM_N_URBS]; + struct pcm_urb out_urbs[PCM_N_URBS]; + int in_packet_size; + int out_packet_size; + int in_n_analog; /* number of analog channels soundcard sends */ + int out_n_analog; /* number of analog channels soundcard receives */ + + struct mutex stream_mutex; + u8 stream_state; /* one of STREAM_XXX (pcm.c) */ + u8 rate; /* one of PCM_RATE_XXX */ + wait_queue_head_t stream_wait_queue; + bool stream_wait_cond; +}; + +int usb6fire_pcm_init(struct sfire_chip *chip); +void usb6fire_pcm_abort(struct sfire_chip *chip); +void usb6fire_pcm_destroy(struct sfire_chip *chip); +#endif /* USB6FIRE_PCM_H */ |