Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) // This file is provided under a dual BSD/GPLv2 license.  When using or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) // redistributing this file, you may do so under either license.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) // Copyright(c) 2019 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) // Authors: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /* Intel-specific SOF IPC code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <sound/pcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <sound/sof/stream.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "../ops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "../sof-priv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct intel_stream {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	size_t posn_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* Mailbox-based Intel IPC implementation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) void intel_ipc_msg_data(struct snd_sof_dev *sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 			struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 			void *p, size_t sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	if (!substream || !sdev->stream_box.size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		struct intel_stream *stream = substream->runtime->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		/* The stream might already be closed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		if (stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 			sof_mailbox_read(sdev, stream->posn_offset, p, sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) EXPORT_SYMBOL_NS(intel_ipc_msg_data, SND_SOC_SOF_INTEL_HIFI_EP_IPC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int intel_ipc_pcm_params(struct snd_sof_dev *sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			 struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 			 const struct sof_ipc_pcm_params_reply *reply)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	struct intel_stream *stream = substream->runtime->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	size_t posn_offset = reply->posn_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	/* check if offset is overflow or it is not aligned */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	if (posn_offset > sdev->stream_box.size ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	    posn_offset % sizeof(struct sof_ipc_stream_posn) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	stream->posn_offset = sdev->stream_box.offset + posn_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	dev_dbg(sdev->dev, "pcm: stream dir %d, posn mailbox offset is %zu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		substream->stream, stream->posn_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) EXPORT_SYMBOL_NS(intel_ipc_pcm_params, SND_SOC_SOF_INTEL_HIFI_EP_IPC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int intel_pcm_open(struct snd_sof_dev *sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 		   struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	struct intel_stream *stream = kmalloc(sizeof(*stream), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	if (!stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	/* binding pcm substream to hda stream */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	substream->runtime->private_data = stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) EXPORT_SYMBOL_NS(intel_pcm_open, SND_SOC_SOF_INTEL_HIFI_EP_IPC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) int intel_pcm_close(struct snd_sof_dev *sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 		    struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 	struct intel_stream *stream = substream->runtime->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 	substream->runtime->private_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 	kfree(stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) EXPORT_SYMBOL_NS(intel_pcm_close, SND_SOC_SOF_INTEL_HIFI_EP_IPC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) MODULE_LICENSE("Dual BSD/GPL");