1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
|
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// Copyright 2021 NXP
//
// Author: Daniel Baluta <daniel.baluta@nxp.com>
#include <sound/soc.h>
#include <sound/sof.h>
#include <sound/compress_driver.h>
#include "sof-audio.h"
#include "sof-priv.h"
#include "sof-utils.h"
static void sof_set_transferred_bytes(struct snd_compr_tstamp *tstamp,
u64 host_pos, u64 buffer_size)
{
u64 prev_pos;
unsigned int copied;
div64_u64_rem(tstamp->copied_total, buffer_size, &prev_pos);
if (host_pos < prev_pos)
copied = (buffer_size - prev_pos) + host_pos;
else
copied = host_pos - prev_pos;
tstamp->copied_total += copied;
}
static void snd_sof_compr_fragment_elapsed_work(struct work_struct *work)
{
struct snd_sof_pcm_stream *sps =
container_of(work, struct snd_sof_pcm_stream,
period_elapsed_work);
snd_compr_fragment_elapsed(sps->cstream);
}
void snd_sof_compr_init_elapsed_work(struct work_struct *work)
{
INIT_WORK(work, snd_sof_compr_fragment_elapsed_work);
}
/*
* sof compr fragment elapse, this could be called in irq thread context
*/
void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream)
{
struct snd_soc_pcm_runtime *rtd;
struct snd_compr_runtime *crtd;
struct snd_soc_component *component;
struct snd_compr_tstamp *tstamp;
struct snd_sof_pcm *spcm;
if (!cstream)
return;
rtd = cstream->private_data;
crtd = cstream->runtime;
tstamp = crtd->private_data;
component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm) {
dev_err(component->dev,
"fragment elapsed called for unknown stream!\n");
return;
}
sof_set_transferred_bytes(tstamp, spcm->stream[cstream->direction].posn.host_posn,
crtd->buffer_size);
/* use the same workqueue-based solution as for PCM, cf. snd_sof_pcm_elapsed */
schedule_work(&spcm->stream[cstream->direction].period_elapsed_work);
}
static int create_page_table(struct snd_soc_component *component,
struct snd_compr_stream *cstream,
unsigned char *dma_area, size_t size)
{
struct snd_dma_buffer *dmab = cstream->runtime->dma_buffer_p;
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
int dir = cstream->direction;
struct snd_sof_pcm *spcm;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
return snd_sof_create_page_table(component->dev, dmab,
spcm->stream[dir].page_table.area, size);
}
static int sof_compr_open(struct snd_soc_component *component,
struct snd_compr_stream *cstream)
{
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
struct snd_compr_runtime *crtd = cstream->runtime;
struct snd_compr_tstamp *tstamp;
struct snd_sof_pcm *spcm;
int dir;
tstamp = kzalloc(sizeof(*tstamp), GFP_KERNEL);
if (!tstamp)
return -ENOMEM;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm) {
kfree(tstamp);
return -EINVAL;
}
dir = cstream->direction;
if (spcm->stream[dir].cstream) {
kfree(tstamp);
return -EBUSY;
}
spcm->stream[dir].cstream = cstream;
spcm->stream[dir].posn.host_posn = 0;
spcm->stream[dir].posn.dai_posn = 0;
spcm->prepared[dir] = false;
crtd->private_data = tstamp;
return 0;
}
static int sof_compr_free(struct snd_soc_component *component,
struct snd_compr_stream *cstream)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_compr_tstamp *tstamp = cstream->runtime->private_data;
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
struct sof_ipc_stream stream;
struct sof_ipc_reply reply;
struct snd_sof_pcm *spcm;
int ret = 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
stream.hdr.size = sizeof(stream);
stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE;
stream.comp_id = spcm->stream[cstream->direction].comp_id;
if (spcm->prepared[cstream->direction]) {
ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd,
&stream, sizeof(stream),
&reply, sizeof(reply));
if (!ret)
spcm->prepared[cstream->direction] = false;
}
cancel_work_sync(&spcm->stream[cstream->direction].period_elapsed_work);
spcm->stream[cstream->direction].cstream = NULL;
kfree(tstamp);
return ret;
}
static int sof_compr_set_params(struct snd_soc_component *component,
struct snd_compr_stream *cstream, struct snd_compr_params *params)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
struct snd_compr_runtime *crtd = cstream->runtime;
struct sof_ipc_pcm_params_reply ipc_params_reply;
struct snd_compr_tstamp *tstamp;
struct sof_ipc_pcm_params pcm;
struct snd_sof_pcm *spcm;
int ret;
tstamp = crtd->private_data;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
cstream->dma_buffer.dev.dev = sdev->dev;
ret = snd_compr_malloc_pages(cstream, crtd->buffer_size);
if (ret < 0)
return ret;
ret = create_page_table(component, cstream, crtd->dma_area, crtd->dma_bytes);
if (ret < 0)
return ret;
memset(&pcm, 0, sizeof(pcm));
pcm.params.buffer.pages = PFN_UP(crtd->dma_bytes);
pcm.hdr.size = sizeof(pcm);
pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS;
pcm.comp_id = spcm->stream[cstream->direction].comp_id;
pcm.params.hdr.size = sizeof(pcm.params);
pcm.params.buffer.phy_addr = spcm->stream[cstream->direction].page_table.addr;
pcm.params.buffer.size = crtd->dma_bytes;
pcm.params.direction = cstream->direction;
pcm.params.channels = params->codec.ch_out;
pcm.params.rate = params->codec.sample_rate;
pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED;
pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE;
pcm.params.sample_container_bytes =
snd_pcm_format_physical_width(SNDRV_PCM_FORMAT_S32) >> 3;
pcm.params.host_period_bytes = params->buffer.fragment_size;
ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm),
&ipc_params_reply, sizeof(ipc_params_reply));
if (ret < 0) {
dev_err(component->dev, "error ipc failed\n");
return ret;
}
tstamp->byte_offset = sdev->stream_box.offset + ipc_params_reply.posn_offset;
tstamp->sampling_rate = params->codec.sample_rate;
spcm->prepared[cstream->direction] = true;
return 0;
}
static int sof_compr_get_params(struct snd_soc_component *component,
struct snd_compr_stream *cstream, struct snd_codec *params)
{
/* TODO: we don't query the supported codecs for now, if the
* application asks for an unsupported codec the set_params() will fail.
*/
return 0;
}
static int sof_compr_trigger(struct snd_soc_component *component,
struct snd_compr_stream *cstream, int cmd)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
struct sof_ipc_stream stream;
struct sof_ipc_reply reply;
struct snd_sof_pcm *spcm;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
stream.hdr.size = sizeof(stream);
stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG;
stream.comp_id = spcm->stream[cstream->direction].comp_id;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
break;
case SNDRV_PCM_TRIGGER_STOP:
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE;
break;
default:
dev_err(component->dev, "error: unhandled trigger cmd %d\n", cmd);
break;
}
return sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd,
&stream, sizeof(stream),
&reply, sizeof(reply));
}
static int sof_compr_copy(struct snd_soc_component *component,
struct snd_compr_stream *cstream,
char __user *buf, size_t count)
{
struct snd_compr_runtime *rtd = cstream->runtime;
unsigned int offset, n;
void *ptr;
int ret;
if (count > rtd->buffer_size)
count = rtd->buffer_size;
div_u64_rem(rtd->total_bytes_available, rtd->buffer_size, &offset);
ptr = rtd->dma_area + offset;
n = rtd->buffer_size - offset;
if (count < n) {
ret = copy_from_user(ptr, buf, count);
} else {
ret = copy_from_user(ptr, buf, n);
ret += copy_from_user(rtd->dma_area, buf + n, count - n);
}
return count - ret;
}
static int sof_compr_pointer(struct snd_soc_component *component,
struct snd_compr_stream *cstream,
struct snd_compr_tstamp *tstamp)
{
struct snd_compr_tstamp *pstamp = cstream->runtime->private_data;
tstamp->sampling_rate = pstamp->sampling_rate;
tstamp->copied_total = pstamp->copied_total;
return 0;
}
struct snd_compress_ops sof_compressed_ops = {
.open = sof_compr_open,
.free = sof_compr_free,
.set_params = sof_compr_set_params,
.get_params = sof_compr_get_params,
.trigger = sof_compr_trigger,
.pointer = sof_compr_pointer,
.copy = sof_compr_copy,
};
EXPORT_SYMBOL(sof_compressed_ops);
|
