xref: /openbmc/linux/sound/soc/sof/intel/hda-probes.c (revision 7cffcade)
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 
22 static inline struct hdac_ext_stream *
23 hda_compr_get_stream(struct snd_compr_stream *cstream)
24 {
25 	return cstream->runtime->private_data;
26 }
27 
28 static 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 
48 static 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 
69 static 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 
103 static 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 
113 static 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 */
129 static 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 
137 int 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 
143 void hda_probes_unregister(struct snd_sof_dev *sdev)
144 {
145 	sof_client_dev_unregister(sdev, "hda-probes", 0);
146 }
147 
148 MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT);
149