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9722c8f9 AW |
1 | /* |
2 | * ALSA interface to cx18 PCM capture streams | |
3 | * | |
6afdeaf8 | 4 | * Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net> |
9722c8f9 AW |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | * 02111-1307 USA | |
20 | */ | |
21 | ||
22 | struct snd_card; | |
23 | ||
24 | struct snd_cx18_card { | |
25 | struct v4l2_device *v4l2_dev; | |
26 | struct snd_card *sc; | |
9972de90 DH |
27 | unsigned int capture_transfer_done; |
28 | unsigned int hwptr_done_capture; | |
29 | struct snd_pcm_substream *capture_pcm_substream; | |
30 | spinlock_t slock; | |
9722c8f9 AW |
31 | }; |
32 | ||
33 | extern int cx18_alsa_debug; | |
34 | ||
83695009 AW |
35 | /* |
36 | * File operations that manipulate the encoder or video or audio subdevices | |
37 | * need to be serialized. Use the same lock we use for v4l2 file ops. | |
38 | */ | |
39 | static inline void snd_cx18_lock(struct snd_cx18_card *cxsc) | |
40 | { | |
41 | struct cx18 *cx = to_cx18(cxsc->v4l2_dev); | |
42 | mutex_lock(&cx->serialize_lock); | |
43 | } | |
44 | ||
45 | static inline void snd_cx18_unlock(struct snd_cx18_card *cxsc) | |
46 | { | |
47 | struct cx18 *cx = to_cx18(cxsc->v4l2_dev); | |
48 | mutex_unlock(&cx->serialize_lock); | |
49 | } | |
50 | ||
9722c8f9 AW |
51 | #define CX18_ALSA_DBGFLG_WARN (1 << 0) |
52 | #define CX18_ALSA_DBGFLG_WARN (1 << 0) | |
53 | #define CX18_ALSA_DBGFLG_INFO (1 << 1) | |
54 | ||
55 | #define CX18_ALSA_DEBUG(x, type, fmt, args...) \ | |
56 | do { \ | |
57 | if ((x) & cx18_alsa_debug) \ | |
58 | printk(KERN_INFO "%s-alsa: " type ": " fmt, \ | |
59 | v4l2_dev->name , ## args); \ | |
60 | } while (0) | |
61 | ||
62 | #define CX18_ALSA_DEBUG_WARN(fmt, args...) \ | |
63 | CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_WARN, "warning", fmt , ## args) | |
64 | ||
65 | #define CX18_ALSA_DEBUG_INFO(fmt, args...) \ | |
66 | CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_INFO, "info", fmt , ## args) | |
67 | ||
68 | #define CX18_ALSA_ERR(fmt, args...) \ | |
69 | printk(KERN_ERR "%s-alsa: " fmt, v4l2_dev->name , ## args) | |
70 | ||
71 | #define CX18_ALSA_WARN(fmt, args...) \ | |
72 | printk(KERN_WARNING "%s-alsa: " fmt, v4l2_dev->name , ## args) | |
73 | ||
74 | #define CX18_ALSA_INFO(fmt, args...) \ | |
75 | printk(KERN_INFO "%s-alsa: " fmt, v4l2_dev->name , ## args) |