Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/sound/soc/davinci/davinci-evm.c

  1 /*
  2  * ASoC driver for TI DAVINCI EVM platform
  3  *
  4  * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
  5  * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.com>
  6  *
  7  * This program is free software; you can redistribute it and/or modify
  8  * it under the terms of the GNU General Public License version 2 as
  9  * published by the Free Software Foundation.
 10  */
 11 
 12 #include <linux/module.h>
 13 #include <linux/moduleparam.h>
 14 #include <linux/timer.h>
 15 #include <linux/interrupt.h>
 16 #include <linux/platform_device.h>
 17 #include <linux/platform_data/edma.h>
 18 #include <linux/i2c.h>
 19 #include <linux/of_platform.h>
 20 #include <linux/clk.h>
 21 #include <sound/core.h>
 22 #include <sound/pcm.h>
 23 #include <sound/soc.h>
 24 
 25 #include <asm/dma.h>
 26 #include <asm/mach-types.h>
 27 
 28 #include <linux/edma.h>
 29 
 30 #include "davinci-pcm.h"
 31 #include "davinci-i2s.h"
 32 
 33 struct snd_soc_card_drvdata_davinci {
 34         struct clk *mclk;
 35         unsigned sysclk;
 36 };
 37 
 38 static int evm_startup(struct snd_pcm_substream *substream)
 39 {
 40         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 41         struct snd_soc_card *soc_card = rtd->card;
 42         struct snd_soc_card_drvdata_davinci *drvdata =
 43                 snd_soc_card_get_drvdata(soc_card);
 44 
 45         if (drvdata->mclk)
 46                 return clk_prepare_enable(drvdata->mclk);
 47 
 48         return 0;
 49 }
 50 
 51 static void evm_shutdown(struct snd_pcm_substream *substream)
 52 {
 53         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 54         struct snd_soc_card *soc_card = rtd->card;
 55         struct snd_soc_card_drvdata_davinci *drvdata =
 56                 snd_soc_card_get_drvdata(soc_card);
 57 
 58         if (drvdata->mclk)
 59                 clk_disable_unprepare(drvdata->mclk);
 60 }
 61 
 62 static int evm_hw_params(struct snd_pcm_substream *substream,
 63                          struct snd_pcm_hw_params *params)
 64 {
 65         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 66         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 67         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 68         struct snd_soc_card *soc_card = rtd->card;
 69         int ret = 0;
 70         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
 71                            snd_soc_card_get_drvdata(soc_card))->sysclk;
 72 
 73         /* set the codec system clock */
 74         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
 75         if (ret < 0)
 76                 return ret;
 77 
 78         /* set the CPU system clock */
 79         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
 80         if (ret < 0)
 81                 return ret;
 82 
 83         return 0;
 84 }
 85 
 86 static struct snd_soc_ops evm_ops = {
 87         .startup = evm_startup,
 88         .shutdown = evm_shutdown,
 89         .hw_params = evm_hw_params,
 90 };
 91 
 92 /* davinci-evm machine dapm widgets */
 93 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
 94         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 95         SND_SOC_DAPM_LINE("Line Out", NULL),
 96         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 97         SND_SOC_DAPM_LINE("Line In", NULL),
 98 };
 99 
100 /* davinci-evm machine audio_mapnections to the codec pins */
101 static const struct snd_soc_dapm_route audio_map[] = {
102         /* Headphone connected to HPLOUT, HPROUT */
103         {"Headphone Jack", NULL, "HPLOUT"},
104         {"Headphone Jack", NULL, "HPROUT"},
105 
106         /* Line Out connected to LLOUT, RLOUT */
107         {"Line Out", NULL, "LLOUT"},
108         {"Line Out", NULL, "RLOUT"},
109 
110         /* Mic connected to (MIC3L | MIC3R) */
111         {"MIC3L", NULL, "Mic Bias"},
112         {"MIC3R", NULL, "Mic Bias"},
113         {"Mic Bias", NULL, "Mic Jack"},
114 
115         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
116         {"LINE1L", NULL, "Line In"},
117         {"LINE2L", NULL, "Line In"},
118         {"LINE1R", NULL, "Line In"},
119         {"LINE2R", NULL, "Line In"},
120 };
121 
122 /* Logic for a aic3x as connected on a davinci-evm */
123 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
124 {
125         struct snd_soc_card *card = rtd->card;
126         struct snd_soc_codec *codec = rtd->codec;
127         struct device_node *np = card->dev->of_node;
128         int ret;
129 
130         /* Add davinci-evm specific widgets */
131         snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
132                                   ARRAY_SIZE(aic3x_dapm_widgets));
133 
134         if (np) {
135                 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
136                 if (ret)
137                         return ret;
138         } else {
139                 /* Set up davinci-evm specific audio path audio_map */
140                 snd_soc_dapm_add_routes(&card->dapm, audio_map,
141                                         ARRAY_SIZE(audio_map));
142         }
143 
144         /* not connected */
145         snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT");
146         snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM");
147         snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM");
148 
149         return 0;
150 }
151 
152 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
153 static struct snd_soc_dai_link dm6446_evm_dai = {
154         .name = "TLV320AIC3X",
155         .stream_name = "AIC3X",
156         .cpu_dai_name = "davinci-mcbsp",
157         .codec_dai_name = "tlv320aic3x-hifi",
158         .codec_name = "tlv320aic3x-codec.1-001b",
159         .platform_name = "davinci-mcbsp",
160         .init = evm_aic3x_init,
161         .ops = &evm_ops,
162         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
163                    SND_SOC_DAIFMT_IB_NF,
164 };
165 
166 static struct snd_soc_dai_link dm355_evm_dai = {
167         .name = "TLV320AIC3X",
168         .stream_name = "AIC3X",
169         .cpu_dai_name = "davinci-mcbsp.1",
170         .codec_dai_name = "tlv320aic3x-hifi",
171         .codec_name = "tlv320aic3x-codec.1-001b",
172         .platform_name = "davinci-mcbsp.1",
173         .init = evm_aic3x_init,
174         .ops = &evm_ops,
175         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
176                    SND_SOC_DAIFMT_IB_NF,
177 };
178 
179 static struct snd_soc_dai_link dm365_evm_dai = {
180 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
181         .name = "TLV320AIC3X",
182         .stream_name = "AIC3X",
183         .cpu_dai_name = "davinci-mcbsp",
184         .codec_dai_name = "tlv320aic3x-hifi",
185         .codec_name = "tlv320aic3x-codec.1-0018",
186         .platform_name = "davinci-mcbsp",
187         .init = evm_aic3x_init,
188         .ops = &evm_ops,
189         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
190                    SND_SOC_DAIFMT_IB_NF,
191 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
192         .name = "Voice Codec - CQ93VC",
193         .stream_name = "CQ93",
194         .cpu_dai_name = "davinci-vcif",
195         .codec_dai_name = "cq93vc-hifi",
196         .codec_name = "cq93vc-codec",
197         .platform_name = "davinci-vcif",
198 #endif
199 };
200 
201 static struct snd_soc_dai_link dm6467_evm_dai[] = {
202         {
203                 .name = "TLV320AIC3X",
204                 .stream_name = "AIC3X",
205                 .cpu_dai_name= "davinci-mcasp.0",
206                 .codec_dai_name = "tlv320aic3x-hifi",
207                 .platform_name = "davinci-mcasp.0",
208                 .codec_name = "tlv320aic3x-codec.0-001a",
209                 .init = evm_aic3x_init,
210                 .ops = &evm_ops,
211                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
212                            SND_SOC_DAIFMT_IB_NF,
213         },
214         {
215                 .name = "McASP",
216                 .stream_name = "spdif",
217                 .cpu_dai_name= "davinci-mcasp.1",
218                 .codec_dai_name = "dit-hifi",
219                 .codec_name = "spdif_dit",
220                 .platform_name = "davinci-mcasp.1",
221                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
222                            SND_SOC_DAIFMT_IB_NF,
223         },
224 };
225 
226 static struct snd_soc_dai_link da830_evm_dai = {
227         .name = "TLV320AIC3X",
228         .stream_name = "AIC3X",
229         .cpu_dai_name = "davinci-mcasp.1",
230         .codec_dai_name = "tlv320aic3x-hifi",
231         .codec_name = "tlv320aic3x-codec.1-0018",
232         .platform_name = "davinci-mcasp.1",
233         .init = evm_aic3x_init,
234         .ops = &evm_ops,
235         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
236                    SND_SOC_DAIFMT_IB_NF,
237 };
238 
239 static struct snd_soc_dai_link da850_evm_dai = {
240         .name = "TLV320AIC3X",
241         .stream_name = "AIC3X",
242         .cpu_dai_name= "davinci-mcasp.0",
243         .codec_dai_name = "tlv320aic3x-hifi",
244         .codec_name = "tlv320aic3x-codec.1-0018",
245         .platform_name = "davinci-mcasp.0",
246         .init = evm_aic3x_init,
247         .ops = &evm_ops,
248         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
249                    SND_SOC_DAIFMT_IB_NF,
250 };
251 
252 /* davinci dm6446 evm audio machine driver */
253 /*
254  * ASP0 in DM6446 EVM is clocked by U55, as configured by
255  * board-dm644x-evm.c using GPIOs from U18.  There are six
256  * options; here we "know" we use a 48 KHz sample rate.
257  */
258 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
259         .sysclk = 12288000,
260 };
261 
262 static struct snd_soc_card dm6446_snd_soc_card_evm = {
263         .name = "DaVinci DM6446 EVM",
264         .owner = THIS_MODULE,
265         .dai_link = &dm6446_evm_dai,
266         .num_links = 1,
267         .drvdata = &dm6446_snd_soc_card_drvdata,
268 };
269 
270 /* davinci dm355 evm audio machine driver */
271 /* ASP1 on DM355 EVM is clocked by an external oscillator */
272 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
273         .sysclk = 27000000,
274 };
275 
276 static struct snd_soc_card dm355_snd_soc_card_evm = {
277         .name = "DaVinci DM355 EVM",
278         .owner = THIS_MODULE,
279         .dai_link = &dm355_evm_dai,
280         .num_links = 1,
281         .drvdata = &dm355_snd_soc_card_drvdata,
282 };
283 
284 /* davinci dm365 evm audio machine driver */
285 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
286         .sysclk = 27000000,
287 };
288 
289 static struct snd_soc_card dm365_snd_soc_card_evm = {
290         .name = "DaVinci DM365 EVM",
291         .owner = THIS_MODULE,
292         .dai_link = &dm365_evm_dai,
293         .num_links = 1,
294         .drvdata = &dm365_snd_soc_card_drvdata,
295 };
296 
297 /* davinci dm6467 evm audio machine driver */
298 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
299         .sysclk = 27000000,
300 };
301 
302 static struct snd_soc_card dm6467_snd_soc_card_evm = {
303         .name = "DaVinci DM6467 EVM",
304         .owner = THIS_MODULE,
305         .dai_link = dm6467_evm_dai,
306         .num_links = ARRAY_SIZE(dm6467_evm_dai),
307         .drvdata = &dm6467_snd_soc_card_drvdata,
308 };
309 
310 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
311         .sysclk = 24576000,
312 };
313 
314 static struct snd_soc_card da830_snd_soc_card = {
315         .name = "DA830/OMAP-L137 EVM",
316         .owner = THIS_MODULE,
317         .dai_link = &da830_evm_dai,
318         .num_links = 1,
319         .drvdata = &da830_snd_soc_card_drvdata,
320 };
321 
322 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
323         .sysclk = 24576000,
324 };
325 
326 static struct snd_soc_card da850_snd_soc_card = {
327         .name = "DA850/OMAP-L138 EVM",
328         .owner = THIS_MODULE,
329         .dai_link = &da850_evm_dai,
330         .num_links = 1,
331         .drvdata = &da850_snd_soc_card_drvdata,
332 };
333 
334 #if defined(CONFIG_OF)
335 
336 /*
337  * The struct is used as place holder. It will be completely
338  * filled with data from dt node.
339  */
340 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
341         .name           = "TLV320AIC3X",
342         .stream_name    = "AIC3X",
343         .codec_dai_name = "tlv320aic3x-hifi",
344         .ops            = &evm_ops,
345         .init           = evm_aic3x_init,
346         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
347                    SND_SOC_DAIFMT_IB_NF,
348 };
349 
350 static const struct of_device_id davinci_evm_dt_ids[] = {
351         {
352                 .compatible = "ti,da830-evm-audio",
353                 .data = (void *) &evm_dai_tlv320aic3x,
354         },
355         { /* sentinel */ }
356 };
357 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
358 
359 /* davinci evm audio machine driver */
360 static struct snd_soc_card evm_soc_card = {
361         .owner = THIS_MODULE,
362         .num_links = 1,
363 };
364 
365 static int davinci_evm_probe(struct platform_device *pdev)
366 {
367         struct device_node *np = pdev->dev.of_node;
368         const struct of_device_id *match =
369                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
370         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
371         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
372         struct clk *mclk;
373         int ret = 0;
374 
375         evm_soc_card.dai_link = dai;
376 
377         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
378         if (!dai->codec_of_node)
379                 return -EINVAL;
380 
381         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
382         if (!dai->cpu_of_node)
383                 return -EINVAL;
384 
385         dai->platform_of_node = dai->cpu_of_node;
386 
387         evm_soc_card.dev = &pdev->dev;
388         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
389         if (ret)
390                 return ret;
391 
392         mclk = devm_clk_get(&pdev->dev, "mclk");
393         if (PTR_ERR(mclk) == -EPROBE_DEFER) {
394                 return -EPROBE_DEFER;
395         } else if (IS_ERR(mclk)) {
396                 dev_dbg(&pdev->dev, "mclk not found.\n");
397                 mclk = NULL;
398         }
399 
400         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
401         if (!drvdata)
402                 return -ENOMEM;
403 
404         drvdata->mclk = mclk;
405 
406         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
407 
408         if (ret < 0) {
409                 if (!drvdata->mclk) {
410                         dev_err(&pdev->dev,
411                                 "No clock or clock rate defined.\n");
412                         return -EINVAL;
413                 }
414                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
415         } else if (drvdata->mclk) {
416                 unsigned int requestd_rate = drvdata->sysclk;
417                 clk_set_rate(drvdata->mclk, drvdata->sysclk);
418                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
419                 if (drvdata->sysclk != requestd_rate)
420                         dev_warn(&pdev->dev,
421                                  "Could not get requested rate %u using %u.\n",
422                                  requestd_rate, drvdata->sysclk);
423         }
424 
425         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
426         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
427 
428         if (ret)
429                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
430 
431         return ret;
432 }
433 
434 static int davinci_evm_remove(struct platform_device *pdev)
435 {
436         struct snd_soc_card *card = platform_get_drvdata(pdev);
437 
438         snd_soc_unregister_card(card);
439 
440         return 0;
441 }
442 
443 static struct platform_driver davinci_evm_driver = {
444         .probe          = davinci_evm_probe,
445         .remove         = davinci_evm_remove,
446         .driver         = {
447                 .name   = "davinci_evm",
448                 .owner  = THIS_MODULE,
449                 .pm     = &snd_soc_pm_ops,
450                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
451         },
452 };
453 #endif
454 
455 static struct platform_device *evm_snd_device;
456 
457 static int __init evm_init(void)
458 {
459         struct snd_soc_card *evm_snd_dev_data;
460         int index;
461         int ret;
462 
463         /*
464          * If dtb is there, the devices will be created dynamically.
465          * Only register platfrom driver structure.
466          */
467 #if defined(CONFIG_OF)
468         if (of_have_populated_dt())
469                 return platform_driver_register(&davinci_evm_driver);
470 #endif
471 
472         if (machine_is_davinci_evm()) {
473                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
474                 index = 0;
475         } else if (machine_is_davinci_dm355_evm()) {
476                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
477                 index = 1;
478         } else if (machine_is_davinci_dm365_evm()) {
479                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
480                 index = 0;
481         } else if (machine_is_davinci_dm6467_evm()) {
482                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
483                 index = 0;
484         } else if (machine_is_davinci_da830_evm()) {
485                 evm_snd_dev_data = &da830_snd_soc_card;
486                 index = 1;
487         } else if (machine_is_davinci_da850_evm()) {
488                 evm_snd_dev_data = &da850_snd_soc_card;
489                 index = 0;
490         } else
491                 return -EINVAL;
492 
493         evm_snd_device = platform_device_alloc("soc-audio", index);
494         if (!evm_snd_device)
495                 return -ENOMEM;
496 
497         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
498         ret = platform_device_add(evm_snd_device);
499         if (ret)
500                 platform_device_put(evm_snd_device);
501 
502         return ret;
503 }
504 
505 static void __exit evm_exit(void)
506 {
507 #if defined(CONFIG_OF)
508         if (of_have_populated_dt()) {
509                 platform_driver_unregister(&davinci_evm_driver);
510                 return;
511         }
512 #endif
513 
514         platform_device_unregister(evm_snd_device);
515 }
516 
517 module_init(evm_init);
518 module_exit(evm_exit);
519 
520 MODULE_AUTHOR("Vladimir Barinov");
521 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
522 MODULE_LICENSE("GPL");
523 

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