ASoC: Merge branch 'for-2.6.39' into for-2.6.40
[linux-2.6/btrfs-unstable.git] / sound / soc / mid-x86 / sst_platform.c
blob9765fb81a5e3b755a2b9c0c4bf519aca9985dd8f
1 /*
2 * sst_platform.c - Intel MID Platform driver
4 * Copyright (C) 2010 Intel Corp
5 * Author: Vinod Koul <vinod.koul@intel.com>
6 * Author: Harsha Priya <priya.harsha@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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.
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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"
38 static 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,
65 /* MFLD - MSIC */
66 struct snd_soc_dai_driver sst_platform_dai[] = {
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,
76 .capture = {
77 .channels_min = 1,
78 .channels_max = 5,
79 .rates = SNDRV_PCM_RATE_48000,
80 .formats = SNDRV_PCM_FMTBIT_S24_LE,
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,
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,
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,
115 /* helper functions */
116 static inline void sst_set_stream_status(struct sst_runtime_stream *stream,
117 int state)
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);
125 static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
127 int state;
128 unsigned long flags;
130 spin_lock_irqsave(&stream->status_lock, flags);
131 state = stream->stream_status;
132 spin_unlock_irqrestore(&stream->status_lock, flags);
133 return state;
136 static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
137 struct snd_sst_stream_params *param)
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);
155 static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
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;
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);
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;
184 stream->stream_info.str_id = ret_val;
185 pr_debug("str id : %d\n", stream->stream_info.str_id);
186 return ret_val;
189 static void sst_period_elapsed(void *mad_substream)
191 struct snd_pcm_substream *substream = mad_substream;
192 struct sst_runtime_stream *stream;
193 int status;
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);
206 static int sst_platform_init_stream(struct snd_pcm_substream *substream)
208 struct sst_runtime_stream *stream =
209 substream->runtime->private_data;
210 int ret_val;
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;
225 /* end -- helper functions */
227 static int sst_platform_open(struct snd_pcm_substream *substream)
229 struct snd_pcm_runtime *runtime;
230 struct sst_runtime_stream *stream;
231 int ret_val = 0;
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;
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;
261 runtime->private_data = stream;
262 return snd_pcm_hw_constraint_integer(runtime,
263 SNDRV_PCM_HW_PARAM_PERIODS);
266 static int sst_platform_close(struct snd_pcm_substream *substream)
268 struct sst_runtime_stream *stream;
269 int ret_val = 0, str_id;
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;
282 static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
284 struct sst_runtime_stream *stream;
285 int ret_val = 0, str_id;
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;
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);
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;
309 static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
310 int cmd)
312 int ret_val = 0, str_id;
313 struct sst_runtime_stream *stream;
314 int str_cmd, status;
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;
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);
349 return ret_val;
353 static snd_pcm_uframes_t sst_platform_pcm_pointer
354 (struct snd_pcm_substream *substream)
356 struct sst_runtime_stream *stream;
357 int ret_val, status;
358 struct pcm_stream_info *str_info;
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;
371 return stream->stream_info.buffer_ptr;
374 static int sst_platform_pcm_hw_params(struct snd_pcm_substream *substream,
375 struct snd_pcm_hw_params *params)
377 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
378 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
380 return 0;
383 static struct snd_pcm_ops sst_platform_ops = {
384 .open = sst_platform_open,
385 .close = sst_platform_close,
386 .ioctl = snd_pcm_lib_ioctl,
387 .prepare = sst_platform_pcm_prepare,
388 .trigger = sst_platform_pcm_trigger,
389 .pointer = sst_platform_pcm_pointer,
390 .hw_params = sst_platform_pcm_hw_params,
393 static void sst_pcm_free(struct snd_pcm *pcm)
395 pr_debug("sst_pcm_free called\n");
396 snd_pcm_lib_preallocate_free_for_all(pcm);
399 int sst_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
400 struct snd_pcm *pcm)
402 int retval = 0;
404 pr_debug("sst_pcm_new called\n");
405 if (dai->driver->playback.channels_min ||
406 dai->driver->capture.channels_min) {
407 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
408 SNDRV_DMA_TYPE_CONTINUOUS,
409 snd_dma_continuous_data(GFP_KERNEL),
410 SST_MIN_BUFFER, SST_MAX_BUFFER);
411 if (retval) {
412 pr_err("dma buffer allocationf fail\n");
413 return retval;
416 return retval;
418 struct snd_soc_platform_driver sst_soc_platform_drv = {
419 .ops = &sst_platform_ops,
420 .pcm_new = sst_pcm_new,
421 .pcm_free = sst_pcm_free,
424 static int sst_platform_probe(struct platform_device *pdev)
426 int ret;
428 pr_debug("sst_platform_probe called\n");
429 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
430 if (ret) {
431 pr_err("registering soc platform failed\n");
432 return ret;
435 ret = snd_soc_register_dais(&pdev->dev,
436 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
437 if (ret) {
438 pr_err("registering cpu dais failed\n");
439 snd_soc_unregister_platform(&pdev->dev);
441 return ret;
444 static int sst_platform_remove(struct platform_device *pdev)
447 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sst_platform_dai));
448 snd_soc_unregister_platform(&pdev->dev);
449 pr_debug("sst_platform_remove success\n");
450 return 0;
453 static struct platform_driver sst_platform_driver = {
454 .driver = {
455 .name = "sst-platform",
456 .owner = THIS_MODULE,
458 .probe = sst_platform_probe,
459 .remove = sst_platform_remove,
462 static int __init sst_soc_platform_init(void)
464 pr_debug("sst_soc_platform_init called\n");
465 return platform_driver_register(&sst_platform_driver);
467 module_init(sst_soc_platform_init);
469 static void __exit sst_soc_platform_exit(void)
471 platform_driver_unregister(&sst_platform_driver);
472 pr_debug("sst_soc_platform_exit success\n");
474 module_exit(sst_soc_platform_exit);
476 MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
477 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
478 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
479 MODULE_LICENSE("GPL v2");
480 MODULE_ALIAS("platform:sst-platform");