diff options
| author | Christian Pointner <equinox@helsinki.at> | 2024-05-10 18:26:46 (GMT) |
|---|---|---|
| committer | Christian Pointner <equinox@helsinki.at> | 2024-05-10 18:26:46 (GMT) |
| commit | 627f7d488817e308d6f3a92fd9a877723ac7ae1d (patch) | |
| tree | 554a3c53c90b20da5bd0da0c8da67a9b169bd10f /snd-alpx/alpx_streams.h | |
import snd-alpx V3.4.3
Diffstat (limited to 'snd-alpx/alpx_streams.h')
| -rw-r--r-- | snd-alpx/alpx_streams.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/snd-alpx/alpx_streams.h b/snd-alpx/alpx_streams.h new file mode 100644 index 0000000..bb33554 --- /dev/null +++ b/snd-alpx/alpx_streams.h @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* +* Support for Digigram AlpX PCI-e boards +* +* Copyright (c) 2024 Digigram Digital (info@digigram.com) +*/ +#ifndef _ALPX_STREAMS_EDF_H +#define _ALPX_STREAMS_EDF_H + +#include <sound/pcm.h> + +/* Structures */ + +enum alpx_pipe_status { + ALPX_PIPE_STATUS_IDLE = 0, + ALPX_PIPE_STATUS_RUNNING, + ALPX_PIPE_STATUS_STOPPING, + ALPX_PIPE_STATUS_STOPPED, +}; + +struct alpx_pipe { + u32 period_qty_on_start; /* 2^64-1 periods @ 192kHZ = 2M years ! , u32 => 0.2year , enough to debug*/ + struct snd_pcm_substream *substream; + + enum alpx_pipe_status status; + bool configured; + bool xdma_write; +}; + + +/* Pipe */ + +int alpx_pipe_init(struct alpx_pipe *pipe, bool xdma_write); + +/* Playback */ +extern const struct snd_pcm_ops alpx_playback_ops; + +int alpx_playback_open(struct snd_pcm_substream *substream); +int alpx_playback_close(struct snd_pcm_substream *substream); +int alpx_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params); +int alpx_playback_hw_free(struct snd_pcm_substream *substream); +int alpx_playback_prepare(struct snd_pcm_substream *substream); +int alpx_playback_trigger(struct snd_pcm_substream *substream, + int command); +snd_pcm_uframes_t alpx_playback_pointer(struct snd_pcm_substream *substream); + +/* Capture */ + +extern const struct snd_pcm_ops alpx_capture_ops; + + +int alpx_capture_open(struct snd_pcm_substream *substream); +int alpx_capture_close(struct snd_pcm_substream *substream); +int alpx_capture_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params); +int alpx_capture_hw_free(struct snd_pcm_substream *substream); +int alpx_capture_prepare(struct snd_pcm_substream *substream); +int alpx_capture_trigger(struct snd_pcm_substream *substream, + int command); + +#endif |