1 files changed, 29 insertions, 0 deletions
diff --git a/sound/usb/pcm.h b/sound/usb/pcm.h
new file mode 100644
index 000000000..c096021ad
--- /dev/null
+++ b/sound/usb/pcm.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __USBAUDIO_PCM_H
+#define __USBAUDIO_PCM_H
+
+void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream);
+int snd_usb_pcm_suspend(struct snd_usb_stream *as);
+int snd_usb_pcm_resume(struct snd_usb_stream *as);
+
+bool snd_usb_pcm_has_fixed_rate(struct snd_usb_substream *as);
+
+int snd_usb_init_pitch(struct snd_usb_audio *chip,
+		       const struct audioformat *fmt);
+void snd_usb_preallocate_buffer(struct snd_usb_substream *subs);
+
+int snd_usb_audioformat_set_sync_ep(struct snd_usb_audio *chip,
+				    struct audioformat *fmt);
+
+const struct audioformat *
+snd_usb_find_format(struct list_head *fmt_list_head, snd_pcm_format_t format,
+		    unsigned int rate, unsigned int channels, bool strict_match,
+		    struct snd_usb_substream *subs);
+const struct audioformat *
+snd_usb_find_substream_format(struct snd_usb_substream *subs,
+			      const struct snd_pcm_hw_params *params);
+
+int snd_usb_hw_params(struct snd_usb_substream *subs,
+		      struct snd_pcm_hw_params *hw_params);
+int snd_usb_hw_free(struct snd_usb_substream *subs);
+#endif /* __USBAUDIO_PCM_H */