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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2//
3// Copyright 2021 NXP
4//
5// Author: Daniel Baluta <[email protected]>
6
7#include <sound/soc.h>
8#include <sound/sof.h>
9#include <sound/compress_driver.h>
10#include "sof-audio.h"
11#include "sof-priv.h"
12#include "sof-utils.h"
13#include "ops.h"
14
15static void sof_set_transferred_bytes(struct sof_compr_stream *sstream,
16 u64 host_pos, u64 buffer_size)
17{
18 u64 prev_pos;
19 unsigned int copied;
20
21 div64_u64_rem(sstream->copied_total, buffer_size, &prev_pos);
22
23 if (host_pos < prev_pos)
24 copied = (buffer_size - prev_pos) + host_pos;
25 else
26 copied = host_pos - prev_pos;
27
28 sstream->copied_total += copied;
29}
30
31static void snd_sof_compr_fragment_elapsed_work(struct work_struct *work)
32{
33 struct snd_sof_pcm_stream *sps =
34 container_of(work, struct snd_sof_pcm_stream,
35 period_elapsed_work);
36
37 snd_compr_fragment_elapsed(sps->cstream);
38}
39
40void snd_sof_compr_init_elapsed_work(struct work_struct *work)
41{
42 INIT_WORK(work, snd_sof_compr_fragment_elapsed_work);
43}
44
45/*
46 * sof compr fragment elapse, this could be called in irq thread context
47 */
48void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream)
49{
50 struct snd_soc_pcm_runtime *rtd;
51 struct snd_compr_runtime *crtd;
52 struct snd_soc_component *component;
53 struct sof_compr_stream *sstream;
54 struct snd_sof_pcm *spcm;
55
56 if (!cstream)
57 return;
58
59 rtd = cstream->private_data;
60 crtd = cstream->runtime;
61 sstream = crtd->private_data;
62 component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
63
64 spcm = snd_sof_find_spcm_dai(component, rtd);
65 if (!spcm) {
66 dev_err(component->dev,
67 "fragment elapsed called for unknown stream!\n");
68 return;
69 }
70
71 sof_set_transferred_bytes(sstream, spcm->stream[cstream->direction].posn.host_posn,
72 crtd->buffer_size);
73
74 /* use the same workqueue-based solution as for PCM, cf. snd_sof_pcm_elapsed */
75 schedule_work(&spcm->stream[cstream->direction].period_elapsed_work);
76}
77
78static int create_page_table(struct snd_soc_component *component,
79 struct snd_compr_stream *cstream,
80 unsigned char *dma_area, size_t size)
81{
82 struct snd_dma_buffer *dmab = cstream->runtime->dma_buffer_p;
83 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
84 int dir = cstream->direction;
85 struct snd_sof_pcm *spcm;
86
87 spcm = snd_sof_find_spcm_dai(component, rtd);
88 if (!spcm)
89 return -EINVAL;
90
91 return snd_sof_create_page_table(component->dev, dmab,
92 spcm->stream[dir].page_table.area, size);
93}
94
95static int sof_compr_open(struct snd_soc_component *component,
96 struct snd_compr_stream *cstream)
97{
98 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
99 struct snd_compr_runtime *crtd = cstream->runtime;
100 struct sof_compr_stream *sstream;
101 struct snd_sof_pcm *spcm;
102 int dir;
103
104 sstream = kzalloc_obj(*sstream);
105 if (!sstream)
106 return -ENOMEM;
107
108 spcm = snd_sof_find_spcm_dai(component, rtd);
109 if (!spcm) {
110 kfree(sstream);
111 return -EINVAL;
112 }
113
114 dir = cstream->direction;
115
116 if (spcm->stream[dir].cstream) {
117 kfree(sstream);
118 return -EBUSY;
119 }
120
121 spcm->stream[dir].cstream = cstream;
122 spcm->stream[dir].posn.host_posn = 0;
123 spcm->stream[dir].posn.dai_posn = 0;
124 spcm->prepared[dir] = false;
125
126 crtd->private_data = sstream;
127
128 return 0;
129}
130
131static int sof_compr_free(struct snd_soc_component *component,
132 struct snd_compr_stream *cstream)
133{
134 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
135 struct sof_compr_stream *sstream = cstream->runtime->private_data;
136 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
137 struct sof_ipc_stream stream;
138 struct snd_sof_pcm *spcm;
139 int ret = 0;
140
141 spcm = snd_sof_find_spcm_dai(component, rtd);
142 if (!spcm)
143 return -EINVAL;
144
145 stream.hdr.size = sizeof(stream);
146 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE;
147 stream.comp_id = spcm->stream[cstream->direction].comp_id;
148
149 if (spcm->prepared[cstream->direction]) {
150 ret = sof_ipc_tx_message_no_reply(sdev->ipc, &stream, sizeof(stream));
151 if (!ret)
152 spcm->prepared[cstream->direction] = false;
153 }
154
155 cancel_work_sync(&spcm->stream[cstream->direction].period_elapsed_work);
156 spcm->stream[cstream->direction].cstream = NULL;
157 kfree(sstream);
158
159 return ret;
160}
161
162static int sof_compr_set_params(struct snd_soc_component *component,
163 struct snd_compr_stream *cstream, struct snd_compr_params *params)
164{
165 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
166 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
167 struct snd_compr_runtime *crtd = cstream->runtime;
168 struct sof_ipc_pcm_params_reply ipc_params_reply;
169 struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
170 struct sof_ipc_fw_version *v = &ready->version;
171 struct sof_compr_stream *sstream;
172 struct sof_ipc_pcm_params *pcm;
173 struct snd_sof_pcm *spcm;
174 size_t ext_data_size;
175 int ret;
176
177 if (v->abi_version < SOF_ABI_VER(3, 22, 0)) {
178 dev_err(component->dev,
179 "Compress params not supported with FW ABI version %d:%d:%d\n",
180 SOF_ABI_VERSION_MAJOR(v->abi_version),
181 SOF_ABI_VERSION_MINOR(v->abi_version),
182 SOF_ABI_VERSION_PATCH(v->abi_version));
183 return -EINVAL;
184 }
185
186 sstream = crtd->private_data;
187
188 spcm = snd_sof_find_spcm_dai(component, rtd);
189
190 if (!spcm)
191 return -EINVAL;
192
193 ext_data_size = sizeof(params->codec);
194
195 if (sizeof(*pcm) + ext_data_size > sdev->ipc->max_payload_size)
196 return -EINVAL;
197
198 /*
199 * Make sure that the DSP is booted up, which might not be the
200 * case if the on-demand DSP boot is used
201 */
202 ret = snd_sof_boot_dsp_firmware(sdev);
203 if (ret)
204 return ret;
205
206 pcm = kzalloc(sizeof(*pcm) + ext_data_size, GFP_KERNEL);
207 if (!pcm)
208 return -ENOMEM;
209
210 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
211 cstream->dma_buffer.dev.dev = sdev->dev;
212 ret = snd_compr_malloc_pages(cstream, crtd->buffer_size);
213 if (ret < 0)
214 goto out;
215
216 ret = create_page_table(component, cstream, crtd->dma_area, crtd->dma_bytes);
217 if (ret < 0)
218 goto out;
219
220 pcm->params.buffer.pages = PFN_UP(crtd->dma_bytes);
221 pcm->hdr.size = sizeof(*pcm) + ext_data_size;
222 pcm->hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS;
223
224 pcm->comp_id = spcm->stream[cstream->direction].comp_id;
225 pcm->params.hdr.size = sizeof(pcm->params) + ext_data_size;
226 pcm->params.buffer.phy_addr = spcm->stream[cstream->direction].page_table.addr;
227 pcm->params.buffer.size = crtd->dma_bytes;
228 pcm->params.direction = cstream->direction;
229 pcm->params.channels = params->codec.ch_out;
230 pcm->params.rate = params->codec.sample_rate;
231 pcm->params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED;
232 pcm->params.frame_fmt = SOF_IPC_FRAME_S32_LE;
233 pcm->params.sample_container_bytes =
234 snd_pcm_format_physical_width(SNDRV_PCM_FORMAT_S32) >> 3;
235 pcm->params.host_period_bytes = params->buffer.fragment_size;
236 pcm->params.ext_data_length = ext_data_size;
237
238 memcpy((u8 *)pcm->params.ext_data, &params->codec, ext_data_size);
239
240 ret = sof_ipc_tx_message(sdev->ipc, pcm, sizeof(*pcm) + ext_data_size,
241 &ipc_params_reply, sizeof(ipc_params_reply));
242 if (ret < 0) {
243 dev_err(component->dev, "error ipc failed\n");
244 goto out;
245 }
246
247 ret = snd_sof_set_stream_data_offset(sdev, &spcm->stream[cstream->direction],
248 ipc_params_reply.posn_offset);
249 if (ret < 0) {
250 dev_err(component->dev, "Invalid stream data offset for Compr %u\n",
251 le32_to_cpu(spcm->pcm.pcm_id));
252 goto out;
253 }
254
255 sstream->sampling_rate = params->codec.sample_rate;
256 sstream->channels = params->codec.ch_out;
257 sstream->sample_container_bytes = pcm->params.sample_container_bytes;
258 sstream->codec_params = params->codec;
259
260 spcm->prepared[cstream->direction] = true;
261
262out:
263 kfree(pcm);
264
265 return ret;
266}
267
268static int sof_compr_get_params(struct snd_soc_component *component,
269 struct snd_compr_stream *cstream, struct snd_codec *params)
270{
271 struct sof_compr_stream *sstream = cstream->runtime->private_data;
272
273 *params = sstream->codec_params;
274
275 return 0;
276}
277
278static int sof_compr_trigger(struct snd_soc_component *component,
279 struct snd_compr_stream *cstream, int cmd)
280{
281 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
282 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
283 struct sof_ipc_stream stream;
284 struct snd_sof_pcm *spcm;
285
286 spcm = snd_sof_find_spcm_dai(component, rtd);
287 if (!spcm)
288 return -EINVAL;
289
290 stream.hdr.size = sizeof(stream);
291 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG;
292 stream.comp_id = spcm->stream[cstream->direction].comp_id;
293
294 switch (cmd) {
295 case SNDRV_PCM_TRIGGER_START:
296 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
297 break;
298 case SNDRV_PCM_TRIGGER_STOP:
299 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP;
300 break;
301 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
302 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE;
303 break;
304 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
305 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE;
306 break;
307 default:
308 dev_err(component->dev, "error: unhandled trigger cmd %d\n", cmd);
309 break;
310 }
311
312 return sof_ipc_tx_message_no_reply(sdev->ipc, &stream, sizeof(stream));
313}
314
315static int sof_compr_copy_playback(struct snd_compr_runtime *rtd,
316 char __user *buf, size_t count)
317{
318 void *ptr;
319 unsigned int offset, n;
320 int ret;
321
322 div_u64_rem(rtd->total_bytes_available, rtd->buffer_size, &offset);
323 ptr = rtd->dma_area + offset;
324 n = rtd->buffer_size - offset;
325
326 if (count < n) {
327 ret = copy_from_user(ptr, buf, count);
328 } else {
329 ret = copy_from_user(ptr, buf, n);
330 ret += copy_from_user(rtd->dma_area, buf + n, count - n);
331 }
332
333 return count - ret;
334}
335
336static int sof_compr_copy_capture(struct snd_compr_runtime *rtd,
337 char __user *buf, size_t count)
338{
339 void *ptr;
340 unsigned int offset, n;
341 int ret;
342
343 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset);
344 ptr = rtd->dma_area + offset;
345 n = rtd->buffer_size - offset;
346
347 if (count < n) {
348 ret = copy_to_user(buf, ptr, count);
349 } else {
350 ret = copy_to_user(buf, ptr, n);
351 ret += copy_to_user(buf + n, rtd->dma_area, count - n);
352 }
353
354 return count - ret;
355}
356
357static int sof_compr_copy(struct snd_soc_component *component,
358 struct snd_compr_stream *cstream,
359 char __user *buf, size_t count)
360{
361 struct snd_compr_runtime *rtd = cstream->runtime;
362
363 if (count > rtd->buffer_size)
364 count = rtd->buffer_size;
365
366 if (cstream->direction == SND_COMPRESS_PLAYBACK)
367 return sof_compr_copy_playback(rtd, buf, count);
368 else
369 return sof_compr_copy_capture(rtd, buf, count);
370}
371
372static int sof_compr_pointer(struct snd_soc_component *component,
373 struct snd_compr_stream *cstream,
374 struct snd_compr_tstamp64 *tstamp)
375{
376 struct snd_sof_pcm *spcm;
377 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
378 struct sof_compr_stream *sstream = cstream->runtime->private_data;
379
380 spcm = snd_sof_find_spcm_dai(component, rtd);
381 if (!spcm)
382 return -EINVAL;
383
384 if (!sstream->channels || !sstream->sample_container_bytes)
385 return -EBUSY;
386
387 tstamp->sampling_rate = sstream->sampling_rate;
388 tstamp->copied_total = sstream->copied_total;
389 tstamp->pcm_io_frames = div_u64(spcm->stream[cstream->direction].posn.dai_posn,
390 sstream->channels * sstream->sample_container_bytes);
391
392 return 0;
393}
394
395struct snd_compress_ops sof_compressed_ops = {
396 .open = sof_compr_open,
397 .free = sof_compr_free,
398 .set_params = sof_compr_set_params,
399 .get_params = sof_compr_get_params,
400 .trigger = sof_compr_trigger,
401 .pointer = sof_compr_pointer,
402 .copy = sof_compr_copy,
403};
404EXPORT_SYMBOL(sof_compressed_ops);