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Diffstat (limited to 'sound/soc/mid-x86/sst_platform.c')
-rw-r--r--sound/soc/mid-x86/sst_platform.c474
1 files changed, 474 insertions, 0 deletions
diff --git a/sound/soc/mid-x86/sst_platform.c b/sound/soc/mid-x86/sst_platform.c
new file mode 100644
index 000000000000..ee2c22475a76
--- /dev/null
+++ b/sound/soc/mid-x86/sst_platform.c
@@ -0,0 +1,474 @@
1/*
2 * sst_platform.c - Intel MID Platform driver
3 *
4 * Copyright (C) 2010 Intel Corp
5 * Author: Vinod Koul <vinod.koul@intel.com>
6 * Author: Harsha Priya <priya.harsha@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 *
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
23 *
24 *
25 */
26#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27
28#include <linux/slab.h>
29#include <linux/io.h>
30#include <sound/core.h>
31#include <sound/pcm.h>
32#include <sound/pcm_params.h>
33#include <sound/soc.h>
34#include "../../../drivers/staging/intel_sst/intel_sst_ioctl.h"
35#include "../../../drivers/staging/intel_sst/intel_sst.h"
36#include "sst_platform.h"
37
38static struct snd_pcm_hardware sst_platform_pcm_hw = {
39 .info = (SNDRV_PCM_INFO_INTERLEAVED |
40 SNDRV_PCM_INFO_DOUBLE |
41 SNDRV_PCM_INFO_PAUSE |
42 SNDRV_PCM_INFO_RESUME |
43 SNDRV_PCM_INFO_MMAP|
44 SNDRV_PCM_INFO_MMAP_VALID |
45 SNDRV_PCM_INFO_BLOCK_TRANSFER |
46 SNDRV_PCM_INFO_SYNC_START),
47 .formats = (SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_U16 |
48 SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_U24 |
49 SNDRV_PCM_FMTBIT_S32 | SNDRV_PCM_FMTBIT_U32),
50 .rates = (SNDRV_PCM_RATE_8000|
51 SNDRV_PCM_RATE_44100 |
52 SNDRV_PCM_RATE_48000),
53 .rate_min = SST_MIN_RATE,
54 .rate_max = SST_MAX_RATE,
55 .channels_min = SST_MIN_CHANNEL,
56 .channels_max = SST_MAX_CHANNEL,
57 .buffer_bytes_max = SST_MAX_BUFFER,
58 .period_bytes_min = SST_MIN_PERIOD_BYTES,
59 .period_bytes_max = SST_MAX_PERIOD_BYTES,
60 .periods_min = SST_MIN_PERIODS,
61 .periods_max = SST_MAX_PERIODS,
62 .fifo_size = SST_FIFO_SIZE,
63};
64
65/* MFLD - MSIC */
66struct snd_soc_dai_driver sst_platform_dai[] = {
67{
68 .name = "Headset-cpu-dai",
69 .id = 0,
70 .playback = {
71 .channels_min = SST_STEREO,
72 .channels_max = SST_STEREO,
73 .rates = SNDRV_PCM_RATE_48000,
74 .formats = SNDRV_PCM_FMTBIT_S24_LE,
75 },
76 .capture = {
77 .channels_min = 1,
78 .channels_max = 5,
79 .rates = SNDRV_PCM_RATE_48000,
80 .formats = SNDRV_PCM_FMTBIT_S24_LE,
81 },
82},
83{
84 .name = "Speaker-cpu-dai",
85 .id = 1,
86 .playback = {
87 .channels_min = SST_MONO,
88 .channels_max = SST_STEREO,
89 .rates = SNDRV_PCM_RATE_48000,
90 .formats = SNDRV_PCM_FMTBIT_S24_LE,
91 },
92},
93{
94 .name = "Vibra1-cpu-dai",
95 .id = 2,
96 .playback = {
97 .channels_min = SST_MONO,
98 .channels_max = SST_MONO,
99 .rates = SNDRV_PCM_RATE_48000,
100 .formats = SNDRV_PCM_FMTBIT_S24_LE,
101 },
102},
103{
104 .name = "Vibra2-cpu-dai",
105 .id = 3,
106 .playback = {
107 .channels_min = SST_MONO,
108 .channels_max = SST_STEREO,
109 .rates = SNDRV_PCM_RATE_48000,
110 .formats = SNDRV_PCM_FMTBIT_S24_LE,
111 },
112},
113};
114
115/* helper functions */
116static inline void sst_set_stream_status(struct sst_runtime_stream *stream,
117 int state)
118{
119 spin_lock(&stream->status_lock);
120 stream->stream_status = state;
121 spin_unlock(&stream->status_lock);
122}
123
124static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
125{
126 int state;
127
128 spin_lock(&stream->status_lock);
129 state = stream->stream_status;
130 spin_unlock(&stream->status_lock);
131 return state;
132}
133
134static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
135 struct snd_sst_stream_params *param)
136{
137
138 param->uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
139 param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
140 param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
141 param->uc.pcm_params.reserved = 0;
142 param->uc.pcm_params.sfreq = substream->runtime->rate;
143 param->uc.pcm_params.ring_buffer_size =
144 snd_pcm_lib_buffer_bytes(substream);
145 param->uc.pcm_params.period_count = substream->runtime->period_size;
146 param->uc.pcm_params.ring_buffer_addr =
147 virt_to_phys(substream->dma_buffer.area);
148 pr_debug("period_cnt = %d\n", param->uc.pcm_params.period_count);
149 pr_debug("sfreq= %d, wd_sz = %d\n",
150 param->uc.pcm_params.sfreq, param->uc.pcm_params.pcm_wd_sz);
151}
152
153static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
154{
155 struct sst_runtime_stream *stream =
156 substream->runtime->private_data;
157 struct snd_sst_stream_params param = {{{0,},},};
158 struct snd_sst_params str_params = {0};
159 int ret_val;
160
161 /* set codec params and inform SST driver the same */
162 sst_fill_pcm_params(substream, &param);
163 substream->runtime->dma_area = substream->dma_buffer.area;
164 str_params.sparams = param;
165 str_params.codec = param.uc.pcm_params.codec;
166 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
167 str_params.ops = STREAM_OPS_PLAYBACK;
168 str_params.device_type = substream->pcm->device + 1;
169 pr_debug("Playbck stream,Device %d\n",
170 substream->pcm->device);
171 } else {
172 str_params.ops = STREAM_OPS_CAPTURE;
173 str_params.device_type = SND_SST_DEVICE_CAPTURE;
174 pr_debug("Capture stream,Device %d\n",
175 substream->pcm->device);
176 }
177 ret_val = stream->sstdrv_ops->pcm_control->open(&str_params);
178 pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val);
179 if (ret_val < 0)
180 return ret_val;
181
182 stream->stream_info.str_id = ret_val;
183 pr_debug("str id : %d\n", stream->stream_info.str_id);
184 return ret_val;
185}
186
187static void sst_period_elapsed(void *mad_substream)
188{
189 struct snd_pcm_substream *substream = mad_substream;
190 struct sst_runtime_stream *stream;
191 int status;
192
193 if (!substream || !substream->runtime)
194 return;
195 stream = substream->runtime->private_data;
196 if (!stream)
197 return;
198 status = sst_get_stream_status(stream);
199 if (status != SST_PLATFORM_RUNNING)
200 return;
201 snd_pcm_period_elapsed(substream);
202}
203
204static int sst_platform_init_stream(struct snd_pcm_substream *substream)
205{
206 struct sst_runtime_stream *stream =
207 substream->runtime->private_data;
208 int ret_val;
209
210 pr_debug("setting buffer ptr param\n");
211 sst_set_stream_status(stream, SST_PLATFORM_INIT);
212 stream->stream_info.period_elapsed = sst_period_elapsed;
213 stream->stream_info.mad_substream = substream;
214 stream->stream_info.buffer_ptr = 0;
215 stream->stream_info.sfreq = substream->runtime->rate;
216 ret_val = stream->sstdrv_ops->pcm_control->device_control(
217 SST_SND_STREAM_INIT, &stream->stream_info);
218 if (ret_val)
219 pr_err("control_set ret error %d\n", ret_val);
220 return ret_val;
221
222}
223/* end -- helper functions */
224
225static int sst_platform_open(struct snd_pcm_substream *substream)
226{
227 struct snd_pcm_runtime *runtime;
228 struct sst_runtime_stream *stream;
229 int ret_val = 0;
230
231 pr_debug("sst_platform_open called\n");
232 runtime = substream->runtime;
233 runtime->hw = sst_platform_pcm_hw;
234 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
235 if (!stream)
236 return -ENOMEM;
237 spin_lock_init(&stream->status_lock);
238 stream->stream_info.str_id = 0;
239 sst_set_stream_status(stream, SST_PLATFORM_INIT);
240 stream->stream_info.mad_substream = substream;
241 /* allocate memory for SST API set */
242 stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops),
243 GFP_KERNEL);
244 if (!stream->sstdrv_ops) {
245 pr_err("sst: mem allocation for ops fail\n");
246 kfree(stream);
247 return -ENOMEM;
248 }
249 stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID;
250 /* registering with SST driver to get access to SST APIs to use */
251 ret_val = register_sst_card(stream->sstdrv_ops);
252 if (ret_val) {
253 pr_err("sst: sst card registration failed\n");
254 return ret_val;
255 }
256 runtime->private_data = stream;
257 return snd_pcm_hw_constraint_integer(runtime,
258 SNDRV_PCM_HW_PARAM_PERIODS);
259}
260
261static int sst_platform_close(struct snd_pcm_substream *substream)
262{
263 struct sst_runtime_stream *stream;
264 int ret_val = 0, str_id;
265
266 pr_debug("sst_platform_close called\n");
267 stream = substream->runtime->private_data;
268 str_id = stream->stream_info.str_id;
269 if (str_id)
270 ret_val = stream->sstdrv_ops->pcm_control->close(str_id);
271 kfree(stream->sstdrv_ops);
272 kfree(stream);
273 return ret_val;
274}
275
276static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
277{
278 struct sst_runtime_stream *stream;
279 int ret_val = 0, str_id;
280
281 pr_debug("sst_platform_pcm_prepare called\n");
282 stream = substream->runtime->private_data;
283 str_id = stream->stream_info.str_id;
284 if (stream->stream_info.str_id) {
285 ret_val = stream->sstdrv_ops->pcm_control->device_control(
286 SST_SND_DROP, &str_id);
287 return ret_val;
288 }
289
290 ret_val = sst_platform_alloc_stream(substream);
291 if (ret_val < 0)
292 return ret_val;
293 snprintf(substream->pcm->id, sizeof(substream->pcm->id),
294 "%d", stream->stream_info.str_id);
295
296 ret_val = sst_platform_init_stream(substream);
297 if (ret_val)
298 return ret_val;
299 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
300 return ret_val;
301}
302
303static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
304 int cmd)
305{
306 int ret_val = 0, str_id;
307 struct sst_runtime_stream *stream;
308 int str_cmd, status;
309
310 pr_debug("sst_platform_pcm_trigger called\n");
311 stream = substream->runtime->private_data;
312 str_id = stream->stream_info.str_id;
313 switch (cmd) {
314 case SNDRV_PCM_TRIGGER_START:
315 pr_debug("sst: Trigger Start\n");
316 str_cmd = SST_SND_START;
317 status = SST_PLATFORM_RUNNING;
318 stream->stream_info.mad_substream = substream;
319 break;
320 case SNDRV_PCM_TRIGGER_STOP:
321 pr_debug("sst: in stop\n");
322 str_cmd = SST_SND_DROP;
323 status = SST_PLATFORM_DROPPED;
324 break;
325 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
326 pr_debug("sst: in pause\n");
327 str_cmd = SST_SND_PAUSE;
328 status = SST_PLATFORM_PAUSED;
329 break;
330 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
331 pr_debug("sst: in pause release\n");
332 str_cmd = SST_SND_RESUME;
333 status = SST_PLATFORM_RUNNING;
334 break;
335 default:
336 return -EINVAL;
337 }
338 ret_val = stream->sstdrv_ops->pcm_control->device_control(str_cmd,
339 &str_id);
340 if (!ret_val)
341 sst_set_stream_status(stream, status);
342
343 return ret_val;
344}
345
346
347static snd_pcm_uframes_t sst_platform_pcm_pointer
348 (struct snd_pcm_substream *substream)
349{
350 struct sst_runtime_stream *stream;
351 int ret_val, status;
352 struct pcm_stream_info *str_info;
353
354 stream = substream->runtime->private_data;
355 status = sst_get_stream_status(stream);
356 if (status == SST_PLATFORM_INIT)
357 return 0;
358 str_info = &stream->stream_info;
359 ret_val = stream->sstdrv_ops->pcm_control->device_control(
360 SST_SND_BUFFER_POINTER, str_info);
361 if (ret_val) {
362 pr_err("sst: error code = %d\n", ret_val);
363 return ret_val;
364 }
365 return stream->stream_info.buffer_ptr;
366}
367
368static int sst_platform_pcm_hw_params(struct snd_pcm_substream *substream,
369 struct snd_pcm_hw_params *params)
370{
371 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
372 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
373
374 return 0;
375}
376
377static struct snd_pcm_ops sst_platform_ops = {
378 .open = sst_platform_open,
379 .close = sst_platform_close,
380 .ioctl = snd_pcm_lib_ioctl,
381 .prepare = sst_platform_pcm_prepare,
382 .trigger = sst_platform_pcm_trigger,
383 .pointer = sst_platform_pcm_pointer,
384 .hw_params = sst_platform_pcm_hw_params,
385};
386
387static void sst_pcm_free(struct snd_pcm *pcm)
388{
389 pr_debug("sst_pcm_free called\n");
390 snd_pcm_lib_preallocate_free_for_all(pcm);
391}
392
393int sst_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
394 struct snd_pcm *pcm)
395{
396 int retval = 0;
397
398 pr_debug("sst_pcm_new called\n");
399 if (dai->driver->playback.channels_min ||
400 dai->driver->capture.channels_min) {
401 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
402 SNDRV_DMA_TYPE_CONTINUOUS,
403 snd_dma_continuous_data(GFP_KERNEL),
404 SST_MIN_BUFFER, SST_MAX_BUFFER);
405 if (retval) {
406 pr_err("dma buffer allocationf fail\n");
407 return retval;
408 }
409 }
410 return retval;
411}
412struct snd_soc_platform_driver sst_soc_platform_drv = {
413 .ops = &sst_platform_ops,
414 .pcm_new = sst_pcm_new,
415 .pcm_free = sst_pcm_free,
416};
417
418static int sst_platform_probe(struct platform_device *pdev)
419{
420 int ret;
421
422 pr_debug("sst_platform_probe called\n");
423 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
424 if (ret) {
425 pr_err("registering soc platform failed\n");
426 return ret;
427 }
428
429 ret = snd_soc_register_dais(&pdev->dev,
430 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
431 if (ret) {
432 pr_err("registering cpu dais failed\n");
433 snd_soc_unregister_platform(&pdev->dev);
434 }
435 return ret;
436}
437
438static int sst_platform_remove(struct platform_device *pdev)
439{
440
441 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sst_platform_dai));
442 snd_soc_unregister_platform(&pdev->dev);
443 pr_debug("sst_platform_remove sucess\n");
444 return 0;
445}
446
447static struct platform_driver sst_platform_driver = {
448 .driver = {
449 .name = "sst-platform",
450 .owner = THIS_MODULE,
451 },
452 .probe = sst_platform_probe,
453 .remove = sst_platform_remove,
454};
455
456static int __init sst_soc_platform_init(void)
457{
458 pr_debug("sst_soc_platform_init called\n");
459 return platform_driver_register(&sst_platform_driver);
460}
461module_init(sst_soc_platform_init);
462
463static void __exit sst_soc_platform_exit(void)
464{
465 platform_driver_unregister(&sst_platform_driver);
466 pr_debug("sst_soc_platform_exit sucess\n");
467}
468module_exit(sst_soc_platform_exit);
469
470MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
471MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
472MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
473MODULE_LICENSE("GPL v2");
474MODULE_ALIAS("platform:sst-platform");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 23:34:45 -0500