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authorGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
committerGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
commitc71c03bda1e86c9d5198c5d83f712e695c4f2a1e (patch)
treeecb166cb3e2b7e2adb3b5e292245fefd23381ac8 /sound/soc/mid-x86/sst_platform.c
parentea53c912f8a86a8567697115b6a0d8152beee5c8 (diff)
parent6a00f206debf8a5c8899055726ad127dbeeed098 (diff)
Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp
Conflicts: litmus/sched_cedf.c
Diffstat (limited to 'sound/soc/mid-x86/sst_platform.c')
-rw-r--r--sound/soc/mid-x86/sst_platform.c486
1 files changed, 486 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..5a946b4115a2
--- /dev/null
+++ b/sound/soc/mid-x86/sst_platform.c
@@ -0,0 +1,486 @@
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 unsigned long flags;
120 spin_lock_irqsave(&stream->status_lock, flags);
121 stream->stream_status = state;
122 spin_unlock_irqrestore(&stream->status_lock, flags);
123}
124
125static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
126{
127 int state;
128 unsigned long flags;
129
130 spin_lock_irqsave(&stream->status_lock, flags);
131 state = stream->stream_status;
132 spin_unlock_irqrestore(&stream->status_lock, flags);
133 return state;
134}
135
136static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
137 struct snd_sst_stream_params *param)
138{
139
140 param->uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
141 param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
142 param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
143 param->uc.pcm_params.reserved = 0;
144 param->uc.pcm_params.sfreq = substream->runtime->rate;
145 param->uc.pcm_params.ring_buffer_size =
146 snd_pcm_lib_buffer_bytes(substream);
147 param->uc.pcm_params.period_count = substream->runtime->period_size;
148 param->uc.pcm_params.ring_buffer_addr =
149 virt_to_phys(substream->dma_buffer.area);
150 pr_debug("period_cnt = %d\n", param->uc.pcm_params.period_count);
151 pr_debug("sfreq= %d, wd_sz = %d\n",
152 param->uc.pcm_params.sfreq, param->uc.pcm_params.pcm_wd_sz);
153}
154
155static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
156{
157 struct sst_runtime_stream *stream =
158 substream->runtime->private_data;
159 struct snd_sst_stream_params param = {{{0,},},};
160 struct snd_sst_params str_params = {0};
161 int ret_val;
162
163 /* set codec params and inform SST driver the same */
164 sst_fill_pcm_params(substream, &param);
165 substream->runtime->dma_area = substream->dma_buffer.area;
166 str_params.sparams = param;
167 str_params.codec = param.uc.pcm_params.codec;
168 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
169 str_params.ops = STREAM_OPS_PLAYBACK;
170 str_params.device_type = substream->pcm->device + 1;
171 pr_debug("Playbck stream,Device %d\n",
172 substream->pcm->device);
173 } else {
174 str_params.ops = STREAM_OPS_CAPTURE;
175 str_params.device_type = SND_SST_DEVICE_CAPTURE;
176 pr_debug("Capture stream,Device %d\n",
177 substream->pcm->device);
178 }
179 ret_val = stream->sstdrv_ops->pcm_control->open(&str_params);
180 pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val);
181 if (ret_val < 0)
182 return ret_val;
183
184 stream->stream_info.str_id = ret_val;
185 pr_debug("str id : %d\n", stream->stream_info.str_id);
186 return ret_val;
187}
188
189static void sst_period_elapsed(void *mad_substream)
190{
191 struct snd_pcm_substream *substream = mad_substream;
192 struct sst_runtime_stream *stream;
193 int status;
194
195 if (!substream || !substream->runtime)
196 return;
197 stream = substream->runtime->private_data;
198 if (!stream)
199 return;
200 status = sst_get_stream_status(stream);
201 if (status != SST_PLATFORM_RUNNING)
202 return;
203 snd_pcm_period_elapsed(substream);
204}
205
206static int sst_platform_init_stream(struct snd_pcm_substream *substream)
207{
208 struct sst_runtime_stream *stream =
209 substream->runtime->private_data;
210 int ret_val;
211
212 pr_debug("setting buffer ptr param\n");
213 sst_set_stream_status(stream, SST_PLATFORM_INIT);
214 stream->stream_info.period_elapsed = sst_period_elapsed;
215 stream->stream_info.mad_substream = substream;
216 stream->stream_info.buffer_ptr = 0;
217 stream->stream_info.sfreq = substream->runtime->rate;
218 ret_val = stream->sstdrv_ops->pcm_control->device_control(
219 SST_SND_STREAM_INIT, &stream->stream_info);
220 if (ret_val)
221 pr_err("control_set ret error %d\n", ret_val);
222 return ret_val;
223
224}
225/* end -- helper functions */
226
227static int sst_platform_open(struct snd_pcm_substream *substream)
228{
229 struct snd_pcm_runtime *runtime;
230 struct sst_runtime_stream *stream;
231 int ret_val = 0;
232
233 pr_debug("sst_platform_open called\n");
234 runtime = substream->runtime;
235 runtime->hw = sst_platform_pcm_hw;
236 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
237 if (!stream)
238 return -ENOMEM;
239 spin_lock_init(&stream->status_lock);
240 stream->stream_info.str_id = 0;
241 sst_set_stream_status(stream, SST_PLATFORM_INIT);
242 stream->stream_info.mad_substream = substream;
243 /* allocate memory for SST API set */
244 stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops),
245 GFP_KERNEL);
246 if (!stream->sstdrv_ops) {
247 pr_err("sst: mem allocation for ops fail\n");
248 kfree(stream);
249 return -ENOMEM;
250 }
251 stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID;
252 stream->sstdrv_ops->module_name = SST_CARD_NAMES;
253 /* registering with SST driver to get access to SST APIs to use */
254 ret_val = register_sst_card(stream->sstdrv_ops);
255 if (ret_val) {
256 pr_err("sst: sst card registration failed\n");
257 kfree(stream->sstdrv_ops);
258 kfree(stream);
259 return ret_val;
260 }
261 runtime->private_data = stream;
262 return snd_pcm_hw_constraint_integer(runtime,
263 SNDRV_PCM_HW_PARAM_PERIODS);
264}
265
266static int sst_platform_close(struct snd_pcm_substream *substream)
267{
268 struct sst_runtime_stream *stream;
269 int ret_val = 0, str_id;
270
271 pr_debug("sst_platform_close called\n");
272 stream = substream->runtime->private_data;
273 str_id = stream->stream_info.str_id;
274 if (str_id)
275 ret_val = stream->sstdrv_ops->pcm_control->close(str_id);
276 unregister_sst_card(stream->sstdrv_ops);
277 kfree(stream->sstdrv_ops);
278 kfree(stream);
279 return ret_val;
280}
281
282static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
283{
284 struct sst_runtime_stream *stream;
285 int ret_val = 0, str_id;
286
287 pr_debug("sst_platform_pcm_prepare called\n");
288 stream = substream->runtime->private_data;
289 str_id = stream->stream_info.str_id;
290 if (stream->stream_info.str_id) {
291 ret_val = stream->sstdrv_ops->pcm_control->device_control(
292 SST_SND_DROP, &str_id);
293 return ret_val;
294 }
295
296 ret_val = sst_platform_alloc_stream(substream);
297 if (ret_val < 0)
298 return ret_val;
299 snprintf(substream->pcm->id, sizeof(substream->pcm->id),
300 "%d", stream->stream_info.str_id);
301
302 ret_val = sst_platform_init_stream(substream);
303 if (ret_val)
304 return ret_val;
305 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
306 return ret_val;
307}
308
309static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
310 int cmd)
311{
312 int ret_val = 0, str_id;
313 struct sst_runtime_stream *stream;
314 int str_cmd, status;
315
316 pr_debug("sst_platform_pcm_trigger called\n");
317 stream = substream->runtime->private_data;
318 str_id = stream->stream_info.str_id;
319 switch (cmd) {
320 case SNDRV_PCM_TRIGGER_START:
321 pr_debug("sst: Trigger Start\n");
322 str_cmd = SST_SND_START;
323 status = SST_PLATFORM_RUNNING;
324 stream->stream_info.mad_substream = substream;
325 break;
326 case SNDRV_PCM_TRIGGER_STOP:
327 pr_debug("sst: in stop\n");
328 str_cmd = SST_SND_DROP;
329 status = SST_PLATFORM_DROPPED;
330 break;
331 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
332 pr_debug("sst: in pause\n");
333 str_cmd = SST_SND_PAUSE;
334 status = SST_PLATFORM_PAUSED;
335 break;
336 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
337 pr_debug("sst: in pause release\n");
338 str_cmd = SST_SND_RESUME;
339 status = SST_PLATFORM_RUNNING;
340 break;
341 default:
342 return -EINVAL;
343 }
344 ret_val = stream->sstdrv_ops->pcm_control->device_control(str_cmd,
345 &str_id);
346 if (!ret_val)
347 sst_set_stream_status(stream, status);
348
349 return ret_val;
350}
351
352
353static snd_pcm_uframes_t sst_platform_pcm_pointer
354 (struct snd_pcm_substream *substream)
355{
356 struct sst_runtime_stream *stream;
357 int ret_val, status;
358 struct pcm_stream_info *str_info;
359
360 stream = substream->runtime->private_data;
361 status = sst_get_stream_status(stream);
362 if (status == SST_PLATFORM_INIT)
363 return 0;
364 str_info = &stream->stream_info;
365 ret_val = stream->sstdrv_ops->pcm_control->device_control(
366 SST_SND_BUFFER_POINTER, str_info);
367 if (ret_val) {
368 pr_err("sst: error code = %d\n", ret_val);
369 return ret_val;
370 }
371 return stream->stream_info.buffer_ptr;
372}
373
374static int sst_platform_pcm_hw_params(struct snd_pcm_substream *substream,
375 struct snd_pcm_hw_params *params)
376{
377 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
378 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
379
380 return 0;
381}
382
383static int sst_platform_pcm_hw_free(struct snd_pcm_substream *substream)
384{
385 return snd_pcm_lib_free_pages(substream);
386}
387
388static struct snd_pcm_ops sst_platform_ops = {
389 .open = sst_platform_open,
390 .close = sst_platform_close,
391 .ioctl = snd_pcm_lib_ioctl,
392 .prepare = sst_platform_pcm_prepare,
393 .trigger = sst_platform_pcm_trigger,
394 .pointer = sst_platform_pcm_pointer,
395 .hw_params = sst_platform_pcm_hw_params,
396 .hw_free = sst_platform_pcm_hw_free,
397};
398
399static void sst_pcm_free(struct snd_pcm *pcm)
400{
401 pr_debug("sst_pcm_free called\n");
402 snd_pcm_lib_preallocate_free_for_all(pcm);
403}
404
405int sst_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
406 struct snd_pcm *pcm)
407{
408 int retval = 0;
409
410 pr_debug("sst_pcm_new called\n");
411 if (dai->driver->playback.channels_min ||
412 dai->driver->capture.channels_min) {
413 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
414 SNDRV_DMA_TYPE_CONTINUOUS,
415 snd_dma_continuous_data(GFP_KERNEL),
416 SST_MIN_BUFFER, SST_MAX_BUFFER);
417 if (retval) {
418 pr_err("dma buffer allocationf fail\n");
419 return retval;
420 }
421 }
422 return retval;
423}
424struct snd_soc_platform_driver sst_soc_platform_drv = {
425 .ops = &sst_platform_ops,
426 .pcm_new = sst_pcm_new,
427 .pcm_free = sst_pcm_free,
428};
429
430static int sst_platform_probe(struct platform_device *pdev)
431{
432 int ret;
433
434 pr_debug("sst_platform_probe called\n");
435 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
436 if (ret) {
437 pr_err("registering soc platform failed\n");
438 return ret;
439 }
440
441 ret = snd_soc_register_dais(&pdev->dev,
442 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
443 if (ret) {
444 pr_err("registering cpu dais failed\n");
445 snd_soc_unregister_platform(&pdev->dev);
446 }
447 return ret;
448}
449
450static int sst_platform_remove(struct platform_device *pdev)
451{
452
453 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sst_platform_dai));
454 snd_soc_unregister_platform(&pdev->dev);
455 pr_debug("sst_platform_remove success\n");
456 return 0;
457}
458
459static struct platform_driver sst_platform_driver = {
460 .driver = {
461 .name = "sst-platform",
462 .owner = THIS_MODULE,
463 },
464 .probe = sst_platform_probe,
465 .remove = sst_platform_remove,
466};
467
468static int __init sst_soc_platform_init(void)
469{
470 pr_debug("sst_soc_platform_init called\n");
471 return platform_driver_register(&sst_platform_driver);
472}
473module_init(sst_soc_platform_init);
474
475static void __exit sst_soc_platform_exit(void)
476{
477 platform_driver_unregister(&sst_platform_driver);
478 pr_debug("sst_soc_platform_exit success\n");
479}
480module_exit(sst_soc_platform_exit);
481
482MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
483MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
484MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
485MODULE_LICENSE("GPL v2");
486MODULE_ALIAS("platform:sst-platform");
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-08 06:10:27 -0400