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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/media/pci/cx18/cx18-alsa.h | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/pci/cx18/cx18-alsa.h')
| -rw-r--r-- | drivers/media/pci/cx18/cx18-alsa.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/media/pci/cx18/cx18-alsa.h b/drivers/media/pci/cx18/cx18-alsa.h new file mode 100644 index 000000000..6d8685fe3 --- /dev/null +++ b/drivers/media/pci/cx18/cx18-alsa.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * ALSA interface to cx18 PCM capture streams + * + * Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net> + */ + +struct snd_card; + +struct snd_cx18_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 cx18_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_cx18_lock(struct snd_cx18_card *cxsc) +{ + struct cx18 *cx = to_cx18(cxsc->v4l2_dev); + mutex_lock(&cx->serialize_lock); +} + +static inline void snd_cx18_unlock(struct snd_cx18_card *cxsc) +{ + struct cx18 *cx = to_cx18(cxsc->v4l2_dev); + mutex_unlock(&cx->serialize_lock); +} + +#define CX18_ALSA_DBGFLG_WARN (1 << 0) +#define CX18_ALSA_DBGFLG_INFO (1 << 1) + +#define CX18_ALSA_DEBUG(x, type, fmt, args...) \ + do { \ + if ((x) & cx18_alsa_debug) \ + printk(KERN_INFO "%s-alsa: " type ": " fmt, \ + v4l2_dev->name , ## args); \ + } while (0) + +#define CX18_ALSA_DEBUG_WARN(fmt, args...) \ + CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_WARN, "warning", fmt , ## args) + +#define CX18_ALSA_DEBUG_INFO(fmt, args...) \ + CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_INFO, "info", fmt , ## args) + +#define CX18_ALSA_ERR(fmt, args...) \ + printk(KERN_ERR "%s-alsa: " fmt, v4l2_dev->name , ## args) + +#define CX18_ALSA_WARN(fmt, args...) \ + printk(KERN_WARNING "%s-alsa: " fmt, v4l2_dev->name , ## args) + +#define CX18_ALSA_INFO(fmt, args...) \ + printk(KERN_INFO "%s-alsa: " fmt, v4l2_dev->name , ## args) |