1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2//
3// This file is provided under a dual BSD/GPLv2 license.  When using or
4// redistributing this file, you may do so under either license.
5//
6// Copyright(c) 2019-2021 Intel Corporation. All rights reserved.
7//
8// Author: Cezary Rojewski <cezary.rojewski@intel.com>
9// Converted to SOF client:
10//  Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
11//  Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
12//
13
14#include <linux/module.h>
15#include <sound/hdaudio_ext.h>
16#include <sound/soc.h>
17#include "../sof-priv.h"
18#include "../sof-client-probes.h"
19#include "../sof-client.h"
20#include "hda.h"
21
22static inline struct hdac_ext_stream *
23hda_compr_get_stream(struct snd_compr_stream *cstream)
24{
25	return cstream->runtime->private_data;
26}
27
28static int hda_probes_compr_startup(struct sof_client_dev *cdev,
29				    struct snd_compr_stream *cstream,
30				    struct snd_soc_dai *dai, u32 *stream_id)
31{
32	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
33	struct hdac_ext_stream *hext_stream;
34
35	hext_stream = hda_dsp_stream_get(sdev, cstream->direction, 0);
36	if (!hext_stream)
37		return -EBUSY;
38
39	hdac_stream(hext_stream)->curr_pos = 0;
40	hdac_stream(hext_stream)->cstream = cstream;
41	cstream->runtime->private_data = hext_stream;
42
43	*stream_id = hdac_stream(hext_stream)->stream_tag;
44
45	return 0;
46}
47
48static int hda_probes_compr_shutdown(struct sof_client_dev *cdev,
49				     struct snd_compr_stream *cstream,
50				     struct snd_soc_dai *dai)
51{
52	struct hdac_ext_stream *hext_stream = hda_compr_get_stream(cstream);
53	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
54	int ret;
55
56	ret = hda_dsp_stream_put(sdev, cstream->direction,
57				 hdac_stream(hext_stream)->stream_tag);
58	if (ret < 0) {
59		dev_dbg(sdev->dev, "stream put failed: %d\n", ret);
60		return ret;
61	}
62
63	hdac_stream(hext_stream)->cstream = NULL;
64	cstream->runtime->private_data = NULL;
65
66	return 0;
67}
68
69static int hda_probes_compr_set_params(struct sof_client_dev *cdev,
70				       struct snd_compr_stream *cstream,
71				       struct snd_compr_params *params,
72				       struct snd_soc_dai *dai)
73{
74	struct hdac_ext_stream *hext_stream = hda_compr_get_stream(cstream);
75	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
76	struct hdac_stream *hstream = hdac_stream(hext_stream);
77	struct snd_dma_buffer *dmab;
78	u32 bits, rate;
79	int bps, ret;
80
81	dmab = cstream->runtime->dma_buffer_p;
82	/* compr params do not store bit depth, default to S32_LE */
83	bps = snd_pcm_format_physical_width(SNDRV_PCM_FORMAT_S32_LE);
84	if (bps < 0)
85		return bps;
86	bits = hda_dsp_get_bits(sdev, bps);
87	rate = hda_dsp_get_mult_div(sdev, params->codec.sample_rate);
88
89	hstream->format_val = rate | bits | (params->codec.ch_out - 1);
90	hstream->bufsize = cstream->runtime->buffer_size;
91	hstream->period_bytes = cstream->runtime->fragment_size;
92	hstream->no_period_wakeup = 0;
93
94	ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, NULL);
95	if (ret < 0) {
96		dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);
97		return ret;
98	}
99
100	return 0;
101}
102
103static int hda_probes_compr_trigger(struct sof_client_dev *cdev,
104				    struct snd_compr_stream *cstream,
105				    int cmd, struct snd_soc_dai *dai)
106{
107	struct hdac_ext_stream *hext_stream = hda_compr_get_stream(cstream);
108	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
109
110	return hda_dsp_stream_trigger(sdev, hext_stream, cmd);
111}
112
113static int hda_probes_compr_pointer(struct sof_client_dev *cdev,
114				    struct snd_compr_stream *cstream,
115				    struct snd_compr_tstamp *tstamp,
116				    struct snd_soc_dai *dai)
117{
118	struct hdac_ext_stream *hext_stream = hda_compr_get_stream(cstream);
119	struct snd_soc_pcm_stream *pstream;
120
121	pstream = &dai->driver->capture;
122	tstamp->copied_total = hdac_stream(hext_stream)->curr_pos;
123	tstamp->sampling_rate = snd_pcm_rate_bit_to_rate(pstream->rates);
124
125	return 0;
126}
127
128/* SOF client implementation */
129static const struct sof_probes_host_ops hda_probes_ops = {
130	.startup = hda_probes_compr_startup,
131	.shutdown = hda_probes_compr_shutdown,
132	.set_params = hda_probes_compr_set_params,
133	.trigger = hda_probes_compr_trigger,
134	.pointer = hda_probes_compr_pointer,
135};
136
137int hda_probes_register(struct snd_sof_dev *sdev)
138{
139	return sof_client_dev_register(sdev, "hda-probes", 0, &hda_probes_ops,
140				       sizeof(hda_probes_ops));
141}
142
143void hda_probes_unregister(struct snd_sof_dev *sdev)
144{
145	sof_client_dev_unregister(sdev, "hda-probes", 0);
146}
147
148MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT);
149