projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 269c11fb AW |
1 | /* |
| 2 | * ALSA interface to ivtv PCM capture streams | |
| 3 | * | |
| 4 | * Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net> | |
| 5 | * Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 269c11fb AW |
16 | */ |
| 17 | ||
| 18 | struct snd_card; | |
| 19 | ||
| 20 | struct snd_ivtv_card { | |
| 21 | struct v4l2_device *v4l2_dev; | |
| 22 | struct snd_card *sc; | |
| 23 | unsigned int capture_transfer_done; | |
| 24 | unsigned int hwptr_done_capture; | |
| 25 | struct snd_pcm_substream *capture_pcm_substream; | |
| 26 | spinlock_t slock; | |
| 27 | }; | |
| 28 | ||
| 29 | extern int ivtv_alsa_debug; | |
| 30 | ||
| 31 | /* | |
| 32 | * File operations that manipulate the encoder or video or audio subdevices | |
| 33 | * need to be serialized. Use the same lock we use for v4l2 file ops. | |
| 34 | */ | |
| 35 | static inline void snd_ivtv_lock(struct snd_ivtv_card *itvsc) | |
| 36 | { | |
| 37 | struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); | |
| 38 | mutex_lock(&itv->serialize_lock); | |
| 39 | } | |
| 40 | ||
| 41 | static inline void snd_ivtv_unlock(struct snd_ivtv_card *itvsc) | |
| 42 | { | |
| 43 | struct ivtv *itv = to_ivtv(itvsc->v4l2_dev); | |
| 44 | mutex_unlock(&itv->serialize_lock); | |
| 45 | } | |
| 46 | ||
| 47 | #define IVTV_ALSA_DBGFLG_WARN (1 << 0) | |
| 48 | #define IVTV_ALSA_DBGFLG_INFO (1 << 1) | |
| 49 | ||
| 50 | #define IVTV_ALSA_DEBUG(x, type, fmt, args...) \ | |
| 51 | do { \ | |
| 52 | if ((x) & ivtv_alsa_debug) \ | |
| 53 | pr_info("%s-alsa: " type ": " fmt, \ | |
| 54 | v4l2_dev->name , ## args); \ | |
| 55 | } while (0) | |
| 56 | ||
| 57 | #define IVTV_ALSA_DEBUG_WARN(fmt, args...) \ | |
| 58 | IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_WARN, "warning", fmt , ## args) | |
| 59 | ||
| 60 | #define IVTV_ALSA_DEBUG_INFO(fmt, args...) \ | |
| 61 | IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_INFO, "info", fmt , ## args) | |
| 62 | ||
| 63 | #define IVTV_ALSA_ERR(fmt, args...) \ | |
| 64 | pr_err("%s-alsa: " fmt, v4l2_dev->name , ## args) | |
| 65 | ||
| 66 | #define IVTV_ALSA_WARN(fmt, args...) \ | |
| 67 | pr_warn("%s-alsa: " fmt, v4l2_dev->name , ## args) | |
| 68 | ||
| 69 | #define IVTV_ALSA_INFO(fmt, args...) \ | |
| 70 | pr_info("%s-alsa: " fmt, v4l2_dev->name , ## args) |