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