Version:  2.0.40 2.2.26 2.4.37 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 3.19 4.0

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

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