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-rw-r--r--sound/soc/mid-x86/sst_platform.c484
-rw-r--r--sound/soc/mid-x86/sst_platform.h63
2 files changed, 547 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..189d546fbf94
--- /dev/null
+++ b/sound/soc/mid-x86/sst_platform.c
@@ -0,0 +1,484 @@
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},
77{
78 .name = "Speaker-cpu-dai",
79 .id = 1,
80 .playback = {
81 .channels_min = SST_MONO,
82 .channels_max = SST_STEREO,
83 .rates = SNDRV_PCM_RATE_48000,
84 .formats = SNDRV_PCM_FMTBIT_S24_LE,
85 },
86},
87{
88 .name = "Vibra1-cpu-dai",
89 .id = 2,
90 .playback = {
91 .channels_min = SST_MONO,
92 .channels_max = SST_MONO,
93 .rates = SNDRV_PCM_RATE_48000,
94 .formats = SNDRV_PCM_FMTBIT_S24_LE,
95 },
96},
97{
98 .name = "Vibra2-cpu-dai",
99 .id = 3,
100 .playback = {
101 .channels_min = SST_MONO,
102 .channels_max = SST_STEREO,
103 .rates = SNDRV_PCM_RATE_48000,
104 .formats = SNDRV_PCM_FMTBIT_S24_LE,
105 },
106},
107};
108/* helper functions */
109static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
110{
111 struct sst_runtime_stream *stream =
112 substream->runtime->private_data;
113 struct snd_sst_stream_params param = {{{0,},},};
114 struct snd_sst_params str_params = {0};
115 int ret_val;
116
117 /* set codec params and inform SST driver the same */
118
119 param.uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
120 param.uc.pcm_params.num_chan = (u8) substream->runtime->channels;
121 param.uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
122 param.uc.pcm_params.reserved = 0;
123 param.uc.pcm_params.sfreq = substream->runtime->rate;
124 param.uc.pcm_params.ring_buffer_size =
125 snd_pcm_lib_buffer_bytes(substream);
126 param.uc.pcm_params.period_count = substream->runtime->period_size;
127 param.uc.pcm_params.ring_buffer_addr =
128 virt_to_phys(substream->dma_buffer.area);
129 substream->runtime->dma_area = substream->dma_buffer.area;
130
131 pr_debug("period_cnt = %d\n", param.uc.pcm_params.period_count);
132 pr_debug("sfreq= %d, wd_sz = %d\n",
133 param.uc.pcm_params.sfreq, param.uc.pcm_params.pcm_wd_sz);
134
135 str_params.sparams = param;
136 str_params.codec = SST_CODEC_TYPE_PCM;
137
138 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
139 str_params.ops = STREAM_OPS_PLAYBACK;
140 str_params.device_type = substream->pcm->device + 1;
141 pr_debug("Playbck stream,Device %d\n",
142 substream->pcm->device);
143 } else {
144 str_params.ops = STREAM_OPS_CAPTURE;
145 str_params.device_type = SND_SST_DEVICE_CAPTURE;
146 pr_debug("Capture stream,Device %d\n",
147 substream->pcm->device);
148 }
149 ret_val = stream->sstdrv_ops->control_set(SST_SND_ALLOC, &str_params);
150 pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val);
151 if (ret_val < 0)
152 return ret_val;
153
154 stream->stream_info.str_id = ret_val;
155 pr_debug("str id : %d\n", stream->stream_info.str_id);
156
157 return ret_val;
158}
159
160
161static void sst_period_elapsed(void *mad_substream)
162{
163 struct snd_pcm_substream *substream = mad_substream;
164 struct sst_runtime_stream *stream;
165
166 if (!substream || !substream->runtime)
167 return;
168 stream = substream->runtime->private_data;
169 if (!stream)
170 return;
171
172 spin_lock(&stream->status_lock);
173 if (stream->stream_status != SST_PLATFORM_RUNNING) {
174 spin_unlock(&stream->status_lock);
175 return;
176 }
177 spin_unlock(&stream->status_lock);
178 snd_pcm_period_elapsed(substream);
179 return;
180}
181
182static int sst_platform_init_stream(struct snd_pcm_substream *substream)
183{
184 struct sst_runtime_stream *stream =
185 substream->runtime->private_data;
186 int ret_val;
187
188 pr_debug("setting buffer ptr param\n");
189 spin_lock(&stream->status_lock);
190 stream->stream_status = SST_PLATFORM_INIT;
191 spin_unlock(&stream->status_lock);
192 stream->stream_info.period_elapsed = sst_period_elapsed;
193 stream->stream_info.mad_substream = substream;
194 stream->stream_info.buffer_ptr = 0;
195 stream->stream_info.sfreq = substream->runtime->rate;
196 ret_val = stream->sstdrv_ops->control_set(SST_SND_STREAM_INIT,
197 &stream->stream_info);
198 if (ret_val)
199 pr_err("control_set ret error %d\n", ret_val);
200 return ret_val;
201
202}
203/* end -- helper functions */
204
205static int sst_platform_open(struct snd_pcm_substream *substream)
206{
207 struct snd_pcm_runtime *runtime;
208 struct sst_runtime_stream *stream;
209 int ret_val = 0;
210
211 pr_debug("sst_platform_open called\n");
212
213 runtime = substream->runtime;
214 runtime->hw = sst_platform_pcm_hw;
215
216 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
217 if (!stream)
218 return -ENOMEM;
219
220 spin_lock_init(&stream->status_lock);
221 stream->stream_info.str_id = 0;
222
223 spin_lock(&stream->status_lock);
224 stream->stream_status = SST_PLATFORM_INIT;
225 spin_unlock(&stream->status_lock);
226
227 stream->stream_info.mad_substream = substream;
228 /* allocate memory for SST API set */
229 stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops),
230 GFP_KERNEL);
231 if (!stream->sstdrv_ops) {
232 pr_err("sst: mem allocation for ops fail\n");
233 kfree(stream);
234 return -ENOMEM;
235 }
236 stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID;
237
238 /* registering with SST driver to get access to SST APIs to use */
239 ret_val = register_sst_card(stream->sstdrv_ops);
240 if (ret_val) {
241 pr_err("sst: sst card registration failed\n");
242 return ret_val;
243 }
244 runtime->private_data = stream;
245 return snd_pcm_hw_constraint_integer(runtime,
246 SNDRV_PCM_HW_PARAM_PERIODS);
247}
248
249static int sst_platform_close(struct snd_pcm_substream *substream)
250{
251 struct sst_runtime_stream *stream;
252 int ret_val = 0, str_id;
253
254 pr_debug("sst_platform_close called\n");
255
256 stream = substream->runtime->private_data;
257 str_id = stream->stream_info.str_id;
258
259 if (str_id)
260 ret_val = stream->sstdrv_ops->control_set(
261 SST_SND_FREE, &str_id);
262
263 kfree(stream->sstdrv_ops);
264 kfree(stream);
265 return ret_val;
266}
267
268static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
269{
270 struct sst_runtime_stream *stream;
271 int ret_val = 0, str_id;
272
273 pr_debug("sst_platform_pcm_prepare called\n");
274
275 stream = substream->runtime->private_data;
276 str_id = stream->stream_info.str_id;
277 if (stream->stream_info.str_id) {
278 ret_val = stream->sstdrv_ops->control_set(
279 SST_SND_DROP, &str_id);
280 return ret_val;
281 }
282
283 ret_val = sst_platform_alloc_stream(substream);
284 if (ret_val < 0)
285 return ret_val;
286 snprintf(substream->pcm->id, sizeof(substream->pcm->id),
287 "%d", stream->stream_info.str_id);
288
289 ret_val = sst_platform_init_stream(substream);
290 if (ret_val)
291 return ret_val;
292 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
293 return ret_val;
294}
295
296static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
297 int cmd)
298{
299 int ret_val = 0, str_id;
300 struct sst_runtime_stream *stream;
301
302 pr_debug("sst_platform_pcm_trigger called\n");
303
304 stream = substream->runtime->private_data;
305
306 str_id = stream->stream_info.str_id;
307
308 switch (cmd) {
309 case SNDRV_PCM_TRIGGER_START:
310 pr_debug("sst: Trigger Start\n");
311 ret_val = stream->sstdrv_ops->control_set(
312 SST_SND_START, &str_id);
313 if (ret_val)
314 break;
315 spin_lock(&stream->status_lock);
316 stream->stream_status = SST_PLATFORM_RUNNING;
317 spin_unlock(&stream->status_lock);
318 stream->stream_info.mad_substream = substream;
319 break;
320 case SNDRV_PCM_TRIGGER_STOP:
321 pr_debug("sst: in stop\n");
322 ret_val = stream->sstdrv_ops->control_set(
323 SST_SND_DROP, &str_id);
324 if (ret_val)
325 break;
326 spin_lock(&stream->status_lock);
327 stream->stream_status = SST_PLATFORM_DROPPED;
328 spin_unlock(&stream->status_lock);
329 break;
330 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
331 pr_debug("sst: in pause\n");
332 ret_val = stream->sstdrv_ops->control_set(
333 SST_SND_PAUSE, &str_id);
334 if (ret_val)
335 break;
336 spin_lock(&stream->status_lock);
337 stream->stream_status = SST_PLATFORM_PAUSED;
338 spin_unlock(&stream->status_lock);
339 break;
340 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
341 pr_debug("sst: in pause release\n");
342 ret_val = stream->sstdrv_ops->control_set(
343 SST_SND_RESUME, &str_id);
344 if (ret_val)
345 break;
346 spin_lock(&stream->status_lock);
347 stream->stream_status = SST_PLATFORM_RUNNING;
348 spin_unlock(&stream->status_lock);
349 break;
350 default:
351 ret_val = -EINVAL;
352 }
353 return ret_val;
354}
355
356
357static snd_pcm_uframes_t sst_platform_pcm_pointer
358 (struct snd_pcm_substream *substream)
359{
360 struct sst_runtime_stream *stream;
361 int ret_val;
362 struct pcm_stream_info *str_info;
363
364
365 stream = substream->runtime->private_data;
366 spin_lock(&stream->status_lock);
367 if (stream->stream_status == SST_PLATFORM_INIT) {
368 spin_unlock(&stream->status_lock);
369 return 0;
370 }
371 spin_unlock(&stream->status_lock);
372
373 str_info = &stream->stream_info;
374 ret_val = stream->sstdrv_ops->control_set(
375 SST_SND_BUFFER_POINTER, str_info);
376 if (ret_val) {
377 pr_err("sst: error code = %d\n", ret_val);
378 return ret_val;
379 }
380
381 return stream->stream_info.buffer_ptr;
382}
383
384
385static struct snd_pcm_ops sst_platform_ops = {
386 .open = sst_platform_open,
387 .close = sst_platform_close,
388 .ioctl = snd_pcm_lib_ioctl,
389 .prepare = sst_platform_pcm_prepare,
390 .trigger = sst_platform_pcm_trigger,
391 .pointer = sst_platform_pcm_pointer,
392};
393
394static void sst_pcm_free(struct snd_pcm *pcm)
395{
396 pr_debug("sst_pcm_free called\n");
397 snd_pcm_lib_preallocate_free_for_all(pcm);
398}
399
400int sst_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
401 struct snd_pcm *pcm)
402{
403 int retval = 0;
404
405 pr_debug("sst_pcm_new called\n");
406
407 if (dai->driver->playback.channels_min ||
408 dai->driver->capture.channels_min) {
409 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
410 SNDRV_DMA_TYPE_CONTINUOUS,
411 snd_dma_continuous_data(GFP_KERNEL),
412 SST_MIN_BUFFER, SST_MAX_BUFFER);
413 if (retval) {
414 pr_err("dma buffer allocationf fail\n");
415 return retval;
416 }
417 }
418
419 return retval;
420}
421struct snd_soc_platform_driver sst_soc_platform_drv = {
422 .ops = &sst_platform_ops,
423 .pcm_new = sst_pcm_new,
424 .pcm_free = sst_pcm_free,
425};
426
427static int sst_platform_probe(struct platform_device *pdev)
428{
429 int ret;
430
431 pr_debug("sst_platform_probe called\n");
432 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
433 if (ret) {
434 pr_err("registering soc platform failed\n");
435 return ret;
436 }
437 ret = snd_soc_register_dais(&pdev->dev,
438 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
439 if (ret) {
440 pr_err("registering cpu dais failed\n");
441 snd_soc_unregister_platform(&pdev->dev);
442 }
443 return ret;
444}
445
446static int sst_platform_remove(struct platform_device *pdev)
447{
448
449 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sst_platform_dai));
450
451 snd_soc_unregister_platform(&pdev->dev);
452 pr_debug("sst_platform_remove sucess\n");
453
454 return 0;
455}
456
457static struct platform_driver sst_platform_driver = {
458 .driver = {
459 .name = "sst-platform",
460 .owner = THIS_MODULE,
461 },
462 .probe = sst_platform_probe,
463 .remove = sst_platform_remove,
464};
465
466static int __init sst_soc_platform_init(void)
467{
468 pr_debug("sst_soc_platform_init called\n");
469 return platform_driver_register(&sst_platform_driver);
470}
471module_init(sst_soc_platform_init);
472
473static void __exit sst_soc_platform_exit(void)
474{
475 platform_driver_unregister(&sst_platform_driver);
476 pr_debug("sst_soc_platform_exit sucess\n");
477}
478module_exit(sst_soc_platform_exit);
479
480MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
481MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
482MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
483MODULE_LICENSE("GPL v2");
484MODULE_ALIAS("platfrom: sst-platform");
diff --git a/sound/soc/mid-x86/sst_platform.h b/sound/soc/mid-x86/sst_platform.h
new file mode 100644
index 000000000000..df370286694f
--- /dev/null
+++ b/sound/soc/mid-x86/sst_platform.h
@@ -0,0 +1,63 @@
1/*
2 * sst_platform.h - Intel MID Platform driver header file
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
27#ifndef __SST_PLATFORMDRV_H__
28#define __SST_PLATFORMDRV_H__
29
30#define SST_MONO 1
31#define SST_STEREO 2
32#define SST_MAX_CAP 5
33
34#define SST_MIN_RATE 8000
35#define SST_MAX_RATE 48000
36#define SST_MIN_CHANNEL 1
37#define SST_MAX_CHANNEL 5
38#define SST_MAX_BUFFER (800*1024)
39#define SST_MIN_BUFFER (800*1024)
40#define SST_MIN_PERIOD_BYTES 32
41#define SST_MAX_PERIOD_BYTES SST_MAX_BUFFER
42#define SST_MIN_PERIODS 2
43#define SST_MAX_PERIODS (1024*2)
44#define SST_FIFO_SIZE 0
45#define SST_CARD_NAMES "intel_mid_card"
46#define MSIC_VENDOR_ID 3
47
48struct sst_runtime_stream {
49 int stream_status;
50 struct pcm_stream_info stream_info;
51 struct intel_sst_card_ops *sstdrv_ops;
52 spinlock_t status_lock;
53};
54
55enum sst_drv_status {
56 SST_PLATFORM_INIT = 1,
57 SST_PLATFORM_STARTED,
58 SST_PLATFORM_RUNNING,
59 SST_PLATFORM_PAUSED,
60 SST_PLATFORM_DROPPED,
61};
62
63#endif
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