probes.c (dab8d000e25c3e91154efca287434a4f78ab65d2) probes.c (700462f55493c6831ad71b209eaebe310dcf11fd)
1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4//
5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7//
8
1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4//
5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7//
8
9#include <sound/compress_driver.h>
10#include <sound/hdaudio_ext.h>
11#include <sound/hdaudio.h>
12#include <sound/soc.h>
9#include "avs.h"
10#include "messages.h"
11
13#include "avs.h"
14#include "messages.h"
15
12__maybe_unused
13static int avs_dsp_init_probe(struct avs_dev *adev, union avs_connector_node_id node_id,
14 size_t buffer_size)
16static int avs_dsp_init_probe(struct avs_dev *adev, union avs_connector_node_id node_id,
17 size_t buffer_size)
15
16{
17 struct avs_probe_cfg cfg = {{0}};
18 struct avs_module_entry mentry;
19 u16 dummy;
20
21 avs_get_module_entry(adev, &AVS_PROBE_MOD_UUID, &mentry);
22
23 /*

--- 5 unchanged lines hidden (view full) ---

29 cfg.base.is_pages = mentry.segments[2].flags.length;
30 cfg.gtw_cfg.node_id = node_id;
31 cfg.gtw_cfg.dma_buffer_size = buffer_size;
32
33 return avs_dsp_init_module(adev, mentry.module_id, INVALID_PIPELINE_ID, 0, 0, &cfg,
34 sizeof(cfg), &dummy);
35}
36
18{
19 struct avs_probe_cfg cfg = {{0}};
20 struct avs_module_entry mentry;
21 u16 dummy;
22
23 avs_get_module_entry(adev, &AVS_PROBE_MOD_UUID, &mentry);
24
25 /*

--- 5 unchanged lines hidden (view full) ---

31 cfg.base.is_pages = mentry.segments[2].flags.length;
32 cfg.gtw_cfg.node_id = node_id;
33 cfg.gtw_cfg.dma_buffer_size = buffer_size;
34
35 return avs_dsp_init_module(adev, mentry.module_id, INVALID_PIPELINE_ID, 0, 0, &cfg,
36 sizeof(cfg), &dummy);
37}
38
37__maybe_unused
38static void avs_dsp_delete_probe(struct avs_dev *adev)
39{
40 struct avs_module_entry mentry;
41
42 avs_get_module_entry(adev, &AVS_PROBE_MOD_UUID, &mentry);
43
44 /* There is only ever one probe module instance. */
45 avs_dsp_delete_module(adev, mentry.module_id, 0, INVALID_PIPELINE_ID, 0);
46}
39static void avs_dsp_delete_probe(struct avs_dev *adev)
40{
41 struct avs_module_entry mentry;
42
43 avs_get_module_entry(adev, &AVS_PROBE_MOD_UUID, &mentry);
44
45 /* There is only ever one probe module instance. */
46 avs_dsp_delete_module(adev, mentry.module_id, 0, INVALID_PIPELINE_ID, 0);
47}
48
49static inline struct hdac_ext_stream *avs_compr_get_host_stream(struct snd_compr_stream *cstream)
50{
51 return cstream->runtime->private_data;
52}
53
54static int avs_probe_compr_open(struct snd_compr_stream *cstream, struct snd_soc_dai *dai)
55{
56 struct avs_dev *adev = to_avs_dev(dai->dev);
57 struct hdac_bus *bus = &adev->base.core;
58 struct hdac_ext_stream *host_stream;
59
60 if (adev->extractor) {
61 dev_err(dai->dev, "Cannot open more than one extractor stream\n");
62 return -EEXIST;
63 }
64
65 host_stream = snd_hdac_ext_cstream_assign(bus, cstream);
66 if (!host_stream) {
67 dev_err(dai->dev, "Failed to assign HDAudio stream for extraction\n");
68 return -EBUSY;
69 }
70
71 adev->extractor = host_stream;
72 hdac_stream(host_stream)->curr_pos = 0;
73 cstream->runtime->private_data = host_stream;
74
75 return 0;
76}
77
78static int avs_probe_compr_free(struct snd_compr_stream *cstream, struct snd_soc_dai *dai)
79{
80 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
81 struct avs_dev *adev = to_avs_dev(dai->dev);
82 struct avs_probe_point_desc *desc;
83 /* Extractor node identifier. */
84 unsigned int vindex = INVALID_NODE_ID.vindex;
85 size_t num_desc;
86 int i, ret;
87
88 /* Disconnect all probe points. */
89 ret = avs_ipc_probe_get_points(adev, &desc, &num_desc);
90 if (ret) {
91 dev_err(dai->dev, "get probe points failed: %d\n", ret);
92 ret = AVS_IPC_RET(ret);
93 goto exit;
94 }
95
96 for (i = 0; i < num_desc; i++)
97 if (desc[i].node_id.vindex == vindex)
98 avs_ipc_probe_disconnect_points(adev, &desc[i].id, 1);
99 kfree(desc);
100
101exit:
102 if (adev->num_probe_streams) {
103 adev->num_probe_streams--;
104 if (!adev->num_probe_streams) {
105 avs_dsp_delete_probe(adev);
106 avs_dsp_enable_d0ix(adev);
107 }
108 }
109
110 snd_hdac_stream_cleanup(hdac_stream(host_stream));
111 hdac_stream(host_stream)->prepared = 0;
112 snd_hdac_ext_stream_release(host_stream, HDAC_EXT_STREAM_TYPE_HOST);
113
114 snd_compr_free_pages(cstream);
115 adev->extractor = NULL;
116
117 return ret;
118}
119
120static int avs_probe_compr_set_params(struct snd_compr_stream *cstream,
121 struct snd_compr_params *params, struct snd_soc_dai *dai)
122{
123 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
124 struct snd_compr_runtime *rtd = cstream->runtime;
125 struct avs_dev *adev = to_avs_dev(dai->dev);
126 /* compr params do not store bit depth, default to S32_LE. */
127 snd_pcm_format_t format = SNDRV_PCM_FORMAT_S32_LE;
128 unsigned int format_val;
129 int bps, ret;
130
131 hdac_stream(host_stream)->bufsize = 0;
132 hdac_stream(host_stream)->period_bytes = 0;
133 hdac_stream(host_stream)->format_val = 0;
134 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
135 cstream->dma_buffer.dev.dev = adev->dev;
136
137 ret = snd_compr_malloc_pages(cstream, rtd->buffer_size);
138 if (ret < 0)
139 return ret;
140 bps = snd_pcm_format_physical_width(format);
141 if (bps < 0)
142 return bps;
143 format_val = snd_hdac_calc_stream_format(params->codec.sample_rate, params->codec.ch_out,
144 format, bps, 0);
145 ret = snd_hdac_stream_set_params(hdac_stream(host_stream), format_val);
146 if (ret < 0)
147 return ret;
148 ret = snd_hdac_stream_setup(hdac_stream(host_stream));
149 if (ret < 0)
150 return ret;
151
152 hdac_stream(host_stream)->prepared = 1;
153
154 if (!adev->num_probe_streams) {
155 union avs_connector_node_id node_id;
156
157 /* D0ix not allowed during probing. */
158 ret = avs_dsp_disable_d0ix(adev);
159 if (ret)
160 return ret;
161
162 node_id.vindex = hdac_stream(host_stream)->stream_tag - 1;
163 node_id.dma_type = AVS_DMA_HDA_HOST_INPUT;
164
165 ret = avs_dsp_init_probe(adev, node_id, rtd->dma_bytes);
166 if (ret < 0) {
167 dev_err(dai->dev, "probe init failed: %d\n", ret);
168 avs_dsp_enable_d0ix(adev);
169 return ret;
170 }
171 }
172
173 adev->num_probe_streams++;
174 return 0;
175}
176
177static int avs_probe_compr_trigger(struct snd_compr_stream *cstream, int cmd,
178 struct snd_soc_dai *dai)
179{
180 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
181 struct avs_dev *adev = to_avs_dev(dai->dev);
182 struct hdac_bus *bus = &adev->base.core;
183 unsigned long cookie;
184
185 if (!hdac_stream(host_stream)->prepared)
186 return -EPIPE;
187
188 switch (cmd) {
189 case SNDRV_PCM_TRIGGER_START:
190 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
191 case SNDRV_PCM_TRIGGER_RESUME:
192 spin_lock_irqsave(&bus->reg_lock, cookie);
193 snd_hdac_stream_start(hdac_stream(host_stream), true);
194 spin_unlock_irqrestore(&bus->reg_lock, cookie);
195 break;
196
197 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
198 case SNDRV_PCM_TRIGGER_SUSPEND:
199 case SNDRV_PCM_TRIGGER_STOP:
200 spin_lock_irqsave(&bus->reg_lock, cookie);
201 snd_hdac_stream_stop(hdac_stream(host_stream));
202 spin_unlock_irqrestore(&bus->reg_lock, cookie);
203 break;
204
205 default:
206 return -EINVAL;
207 }
208
209 return 0;
210}
211
212static int avs_probe_compr_pointer(struct snd_compr_stream *cstream,
213 struct snd_compr_tstamp *tstamp, struct snd_soc_dai *dai)
214{
215 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
216 struct snd_soc_pcm_stream *pstream;
217
218 pstream = &dai->driver->capture;
219 tstamp->copied_total = hdac_stream(host_stream)->curr_pos;
220 tstamp->sampling_rate = snd_pcm_rate_bit_to_rate(pstream->rates);
221
222 return 0;
223}
224
225static int avs_probe_compr_copy(struct snd_soc_component *comp, struct snd_compr_stream *cstream,
226 char __user *buf, size_t count)
227{
228 struct snd_compr_runtime *rtd = cstream->runtime;
229 unsigned int offset, n;
230 void *ptr;
231 int ret;
232
233 if (count > rtd->buffer_size)
234 count = rtd->buffer_size;
235
236 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset);
237 ptr = rtd->dma_area + offset;
238 n = rtd->buffer_size - offset;
239
240 if (count < n) {
241 ret = copy_to_user(buf, ptr, count);
242 } else {
243 ret = copy_to_user(buf, ptr, n);
244 ret += copy_to_user(buf + n, rtd->dma_area, count - n);
245 }
246
247 if (ret)
248 return count - ret;
249 return count;
250}
251
252__maybe_unused
253static const struct snd_soc_cdai_ops avs_probe_dai_ops = {
254 .startup = avs_probe_compr_open,
255 .shutdown = avs_probe_compr_free,
256 .set_params = avs_probe_compr_set_params,
257 .trigger = avs_probe_compr_trigger,
258 .pointer = avs_probe_compr_pointer,
259};
260
261__maybe_unused
262static const struct snd_compress_ops avs_probe_compress_ops = {
263 .copy = avs_probe_compr_copy,
264};