diff options
Diffstat (limited to 'drivers/media/pci/ivtv/ivtv-alsa.h')
| -rw-r--r-- | drivers/media/pci/ivtv/ivtv-alsa.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-alsa.h b/drivers/media/pci/ivtv/ivtv-alsa.h new file mode 100644 index 000000000..eae646223 --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-alsa.h @@ -0,0 +1,70 @@ +/* + * ALSA interface to ivtv PCM capture streams + * + * Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net> + * Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.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; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +struct snd_card; + +struct snd_ivtv_card { + struct v4l2_device *v4l2_dev; + struct snd_card *sc; + unsigned int capture_transfer_done; + unsigned int hwptr_done_capture; + struct snd_pcm_substream *capture_pcm_substream; + spinlock_t slock; +}; + +extern int ivtv_alsa_debug; + +/* + * File operations that manipulate the encoder or video or audio subdevices + * need to be serialized. Use the same lock we use for v4l2 file ops. + */ +static inline void snd_ivtv_lock(struct snd_ivtv_card *itvsc) +{ + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + mutex_lock(&itv->serialize_lock); +} + +static inline void snd_ivtv_unlock(struct snd_ivtv_card *itvsc) +{ + struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); + mutex_unlock(&itv->serialize_lock); +} + +#define IVTV_ALSA_DBGFLG_WARN (1 << 0) +#define IVTV_ALSA_DBGFLG_INFO (1 << 1) + +#define IVTV_ALSA_DEBUG(x, type, fmt, args...) \ + do { \ + if ((x) & ivtv_alsa_debug) \ + pr_info("%s-alsa: " type ": " fmt, \ + v4l2_dev->name , ## args); \ + } while (0) + +#define IVTV_ALSA_DEBUG_WARN(fmt, args...) \ + IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_WARN, "warning", fmt , ## args) + +#define IVTV_ALSA_DEBUG_INFO(fmt, args...) \ + IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_INFO, "info", fmt , ## args) + +#define IVTV_ALSA_ERR(fmt, args...) \ + pr_err("%s-alsa: " fmt, v4l2_dev->name , ## args) + +#define IVTV_ALSA_WARN(fmt, args...) \ + pr_warn("%s-alsa: " fmt, v4l2_dev->name , ## args) + +#define IVTV_ALSA_INFO(fmt, args...) \ + pr_info("%s-alsa: " fmt, v4l2_dev->name , ## args) |