xref: /openbmc/linux/sound/soc/fsl/fsl-asoc-card.c (revision 6774def6)
1 /*
2  * Freescale Generic ASoC Sound Card driver with ASRC
3  *
4  * Copyright (C) 2014 Freescale Semiconductor, Inc.
5  *
6  * Author: Nicolin Chen <nicoleotsuka@gmail.com>
7  *
8  * This file is licensed under the terms of the GNU General Public License
9  * version 2. This program is licensed "as is" without any warranty of any
10  * kind, whether express or implied.
11  */
12 
13 #include <linux/clk.h>
14 #include <linux/i2c.h>
15 #include <linux/module.h>
16 #include <linux/of_platform.h>
17 #include <sound/pcm_params.h>
18 #include <sound/soc.h>
19 
20 #include "fsl_esai.h"
21 #include "fsl_sai.h"
22 #include "imx-audmux.h"
23 
24 #include "../codecs/sgtl5000.h"
25 #include "../codecs/wm8962.h"
26 
27 #define RX 0
28 #define TX 1
29 
30 /* Default DAI format without Master and Slave flag */
31 #define DAI_FMT_BASE (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF)
32 
33 /**
34  * CODEC private data
35  *
36  * @mclk_freq: Clock rate of MCLK
37  * @mclk_id: MCLK (or main clock) id for set_sysclk()
38  * @fll_id: FLL (or secordary clock) id for set_sysclk()
39  * @pll_id: PLL id for set_pll()
40  */
41 struct codec_priv {
42 	unsigned long mclk_freq;
43 	u32 mclk_id;
44 	u32 fll_id;
45 	u32 pll_id;
46 };
47 
48 /**
49  * CPU private data
50  *
51  * @sysclk_freq[2]: SYSCLK rates for set_sysclk()
52  * @sysclk_dir[2]: SYSCLK directions for set_sysclk()
53  * @sysclk_id[2]: SYSCLK ids for set_sysclk()
54  *
55  * Note: [1] for tx and [0] for rx
56  */
57 struct cpu_priv {
58 	unsigned long sysclk_freq[2];
59 	u32 sysclk_dir[2];
60 	u32 sysclk_id[2];
61 };
62 
63 /**
64  * Freescale Generic ASOC card private data
65  *
66  * @dai_link[3]: DAI link structure including normal one and DPCM link
67  * @pdev: platform device pointer
68  * @codec_priv: CODEC private data
69  * @cpu_priv: CPU private data
70  * @card: ASoC card structure
71  * @sample_rate: Current sample rate
72  * @sample_format: Current sample format
73  * @asrc_rate: ASRC sample rate used by Back-Ends
74  * @asrc_format: ASRC sample format used by Back-Ends
75  * @dai_fmt: DAI format between CPU and CODEC
76  * @name: Card name
77  */
78 
79 struct fsl_asoc_card_priv {
80 	struct snd_soc_dai_link dai_link[3];
81 	struct platform_device *pdev;
82 	struct codec_priv codec_priv;
83 	struct cpu_priv cpu_priv;
84 	struct snd_soc_card card;
85 	u32 sample_rate;
86 	u32 sample_format;
87 	u32 asrc_rate;
88 	u32 asrc_format;
89 	u32 dai_fmt;
90 	char name[32];
91 };
92 
93 /**
94  * This dapm route map exsits for DPCM link only.
95  * The other routes shall go through Device Tree.
96  */
97 static const struct snd_soc_dapm_route audio_map[] = {
98 	{"CPU-Playback",  NULL, "ASRC-Playback"},
99 	{"Playback",  NULL, "CPU-Playback"},
100 	{"ASRC-Capture",  NULL, "CPU-Capture"},
101 	{"CPU-Capture",  NULL, "Capture"},
102 };
103 
104 /* Add all possible widgets into here without being redundant */
105 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
106 	SND_SOC_DAPM_LINE("Line Out Jack", NULL),
107 	SND_SOC_DAPM_LINE("Line In Jack", NULL),
108 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
109 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
110 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
111 	SND_SOC_DAPM_MIC("AMIC", NULL),
112 	SND_SOC_DAPM_MIC("DMIC", NULL),
113 };
114 
115 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
116 				   struct snd_pcm_hw_params *params)
117 {
118 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
119 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
120 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
121 	struct cpu_priv *cpu_priv = &priv->cpu_priv;
122 	struct device *dev = rtd->card->dev;
123 	int ret;
124 
125 	priv->sample_rate = params_rate(params);
126 	priv->sample_format = params_format(params);
127 
128 	if (priv->card.set_bias_level)
129 		return 0;
130 
131 	/* Specific configurations of DAIs starts from here */
132 	ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, cpu_priv->sysclk_id[tx],
133 				     cpu_priv->sysclk_freq[tx],
134 				     cpu_priv->sysclk_dir[tx]);
135 	if (ret) {
136 		dev_err(dev, "failed to set sysclk for cpu dai\n");
137 		return ret;
138 	}
139 
140 	return 0;
141 }
142 
143 static struct snd_soc_ops fsl_asoc_card_ops = {
144 	.hw_params = fsl_asoc_card_hw_params,
145 };
146 
147 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
148 			      struct snd_pcm_hw_params *params)
149 {
150 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
151 	struct snd_interval *rate;
152 	struct snd_mask *mask;
153 
154 	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
155 	rate->max = rate->min = priv->asrc_rate;
156 
157 	mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
158 	snd_mask_none(mask);
159 	snd_mask_set(mask, priv->asrc_format);
160 
161 	return 0;
162 }
163 
164 static struct snd_soc_dai_link fsl_asoc_card_dai[] = {
165 	/* Default ASoC DAI Link*/
166 	{
167 		.name = "HiFi",
168 		.stream_name = "HiFi",
169 		.ops = &fsl_asoc_card_ops,
170 	},
171 	/* DPCM Link between Front-End and Back-End (Optional) */
172 	{
173 		.name = "HiFi-ASRC-FE",
174 		.stream_name = "HiFi-ASRC-FE",
175 		.codec_name = "snd-soc-dummy",
176 		.codec_dai_name = "snd-soc-dummy-dai",
177 		.dpcm_playback = 1,
178 		.dpcm_capture = 1,
179 		.dynamic = 1,
180 	},
181 	{
182 		.name = "HiFi-ASRC-BE",
183 		.stream_name = "HiFi-ASRC-BE",
184 		.platform_name = "snd-soc-dummy",
185 		.be_hw_params_fixup = be_hw_params_fixup,
186 		.ops = &fsl_asoc_card_ops,
187 		.dpcm_playback = 1,
188 		.dpcm_capture = 1,
189 		.no_pcm = 1,
190 	},
191 };
192 
193 static int fsl_asoc_card_set_bias_level(struct snd_soc_card *card,
194 					struct snd_soc_dapm_context *dapm,
195 					enum snd_soc_bias_level level)
196 {
197 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
198 	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
199 	struct codec_priv *codec_priv = &priv->codec_priv;
200 	struct device *dev = card->dev;
201 	unsigned int pll_out;
202 	int ret;
203 
204 	if (dapm->dev != codec_dai->dev)
205 		return 0;
206 
207 	switch (level) {
208 	case SND_SOC_BIAS_PREPARE:
209 		if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
210 			break;
211 
212 		if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
213 			pll_out = priv->sample_rate * 384;
214 		else
215 			pll_out = priv->sample_rate * 256;
216 
217 		ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id,
218 					  codec_priv->mclk_id,
219 					  codec_priv->mclk_freq, pll_out);
220 		if (ret) {
221 			dev_err(dev, "failed to start FLL: %d\n", ret);
222 			return ret;
223 		}
224 
225 		ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->fll_id,
226 					     pll_out, SND_SOC_CLOCK_IN);
227 		if (ret) {
228 			dev_err(dev, "failed to set SYSCLK: %d\n", ret);
229 			return ret;
230 		}
231 		break;
232 
233 	case SND_SOC_BIAS_STANDBY:
234 		if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
235 			break;
236 
237 		ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
238 					     codec_priv->mclk_freq,
239 					     SND_SOC_CLOCK_IN);
240 		if (ret) {
241 			dev_err(dev, "failed to switch away from FLL: %d\n", ret);
242 			return ret;
243 		}
244 
245 		ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 0, 0, 0);
246 		if (ret) {
247 			dev_err(dev, "failed to stop FLL: %d\n", ret);
248 			return ret;
249 		}
250 		break;
251 
252 	default:
253 		break;
254 	}
255 
256 	return 0;
257 }
258 
259 static int fsl_asoc_card_audmux_init(struct device_node *np,
260 				     struct fsl_asoc_card_priv *priv)
261 {
262 	struct device *dev = &priv->pdev->dev;
263 	u32 int_ptcr = 0, ext_ptcr = 0;
264 	int int_port, ext_port;
265 	int ret;
266 
267 	ret = of_property_read_u32(np, "mux-int-port", &int_port);
268 	if (ret) {
269 		dev_err(dev, "mux-int-port missing or invalid\n");
270 		return ret;
271 	}
272 	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
273 	if (ret) {
274 		dev_err(dev, "mux-ext-port missing or invalid\n");
275 		return ret;
276 	}
277 
278 	/*
279 	 * The port numbering in the hardware manual starts at 1, while
280 	 * the AUDMUX API expects it starts at 0.
281 	 */
282 	int_port--;
283 	ext_port--;
284 
285 	/*
286 	 * Use asynchronous mode (6 wires) for all cases.
287 	 * If only 4 wires are needed, just set SSI into
288 	 * synchronous mode and enable 4 PADs in IOMUX.
289 	 */
290 	switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
291 	case SND_SOC_DAIFMT_CBM_CFM:
292 		int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
293 			   IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
294 			   IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
295 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
296 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
297 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
298 			   IMX_AUDMUX_V2_PTCR_TFSDIR |
299 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
300 		break;
301 	case SND_SOC_DAIFMT_CBM_CFS:
302 		int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
303 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
304 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
305 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
306 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
307 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
308 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
309 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
310 		break;
311 	case SND_SOC_DAIFMT_CBS_CFM:
312 		int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
313 			   IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
314 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
315 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
316 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
317 			   IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
318 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
319 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
320 		break;
321 	case SND_SOC_DAIFMT_CBS_CFS:
322 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
323 			   IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
324 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
325 			   IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
326 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
327 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
328 			   IMX_AUDMUX_V2_PTCR_TFSDIR |
329 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
330 		break;
331 	default:
332 		return -EINVAL;
333 	}
334 
335 	/* Asynchronous mode can not be set along with RCLKDIR */
336 	ret = imx_audmux_v2_configure_port(int_port, 0,
337 					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
338 	if (ret) {
339 		dev_err(dev, "audmux internal port setup failed\n");
340 		return ret;
341 	}
342 
343 	ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
344 					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
345 	if (ret) {
346 		dev_err(dev, "audmux internal port setup failed\n");
347 		return ret;
348 	}
349 
350 	ret = imx_audmux_v2_configure_port(ext_port, 0,
351 					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
352 	if (ret) {
353 		dev_err(dev, "audmux external port setup failed\n");
354 		return ret;
355 	}
356 
357 	ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
358 					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
359 	if (ret) {
360 		dev_err(dev, "audmux external port setup failed\n");
361 		return ret;
362 	}
363 
364 	return 0;
365 }
366 
367 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
368 {
369 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
370 	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
371 	struct codec_priv *codec_priv = &priv->codec_priv;
372 	struct device *dev = card->dev;
373 	int ret;
374 
375 	ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
376 				     codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
377 	if (ret) {
378 		dev_err(dev, "failed to set sysclk in %s\n", __func__);
379 		return ret;
380 	}
381 
382 	return 0;
383 }
384 
385 static int fsl_asoc_card_probe(struct platform_device *pdev)
386 {
387 	struct device_node *cpu_np, *codec_np, *asrc_np;
388 	struct device_node *np = pdev->dev.of_node;
389 	struct platform_device *asrc_pdev = NULL;
390 	struct platform_device *cpu_pdev;
391 	struct fsl_asoc_card_priv *priv;
392 	struct i2c_client *codec_dev;
393 	struct clk *codec_clk;
394 	u32 width;
395 	int ret;
396 
397 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
398 	if (!priv)
399 		return -ENOMEM;
400 
401 	cpu_np = of_parse_phandle(np, "audio-cpu", 0);
402 	/* Give a chance to old DT binding */
403 	if (!cpu_np)
404 		cpu_np = of_parse_phandle(np, "ssi-controller", 0);
405 	codec_np = of_parse_phandle(np, "audio-codec", 0);
406 	if (!cpu_np || !codec_np) {
407 		dev_err(&pdev->dev, "phandle missing or invalid\n");
408 		ret = -EINVAL;
409 		goto fail;
410 	}
411 
412 	cpu_pdev = of_find_device_by_node(cpu_np);
413 	if (!cpu_pdev) {
414 		dev_err(&pdev->dev, "failed to find CPU DAI device\n");
415 		ret = -EINVAL;
416 		goto fail;
417 	}
418 
419 	codec_dev = of_find_i2c_device_by_node(codec_np);
420 	if (!codec_dev) {
421 		dev_err(&pdev->dev, "failed to find codec platform device\n");
422 		ret = -EINVAL;
423 		goto fail;
424 	}
425 
426 	asrc_np = of_parse_phandle(np, "audio-asrc", 0);
427 	if (asrc_np)
428 		asrc_pdev = of_find_device_by_node(asrc_np);
429 
430 	/* Get the MCLK rate only, and leave it controlled by CODEC drivers */
431 	codec_clk = clk_get(&codec_dev->dev, NULL);
432 	if (!IS_ERR(codec_clk)) {
433 		priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
434 		clk_put(codec_clk);
435 	}
436 
437 	/* Default sample rate and format, will be updated in hw_params() */
438 	priv->sample_rate = 44100;
439 	priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
440 
441 	/* Assign a default DAI format, and allow each card to overwrite it */
442 	priv->dai_fmt = DAI_FMT_BASE;
443 
444 	/* Diversify the card configurations */
445 	if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
446 		priv->card.set_bias_level = NULL;
447 		priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
448 		priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
449 		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
450 		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
451 		priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
452 	} else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
453 		priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
454 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
455 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
456 		priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
457 		priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
458 		priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
459 		priv->codec_priv.pll_id = WM8962_FLL;
460 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
461 	} else {
462 		dev_err(&pdev->dev, "unknown Device Tree compatible\n");
463 		return -EINVAL;
464 	}
465 
466 	/* Common settings for corresponding Freescale CPU DAI driver */
467 	if (strstr(cpu_np->name, "ssi")) {
468 		/* Only SSI needs to configure AUDMUX */
469 		ret = fsl_asoc_card_audmux_init(np, priv);
470 		if (ret) {
471 			dev_err(&pdev->dev, "failed to init audmux\n");
472 			goto asrc_fail;
473 		}
474 	} else if (strstr(cpu_np->name, "esai")) {
475 		priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
476 		priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
477 	} else if (strstr(cpu_np->name, "sai")) {
478 		priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
479 		priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
480 	}
481 
482 	sprintf(priv->name, "%s-audio", codec_dev->name);
483 
484 	/* Initialize sound card */
485 	priv->pdev = pdev;
486 	priv->card.dev = &pdev->dev;
487 	priv->card.name = priv->name;
488 	priv->card.dai_link = priv->dai_link;
489 	priv->card.dapm_routes = audio_map;
490 	priv->card.late_probe = fsl_asoc_card_late_probe;
491 	priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
492 	priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
493 	priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
494 
495 	memcpy(priv->dai_link, fsl_asoc_card_dai,
496 	       sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
497 
498 	/* Normal DAI Link */
499 	priv->dai_link[0].cpu_of_node = cpu_np;
500 	priv->dai_link[0].codec_of_node = codec_np;
501 	priv->dai_link[0].codec_dai_name = codec_dev->name;
502 	priv->dai_link[0].platform_of_node = cpu_np;
503 	priv->dai_link[0].dai_fmt = priv->dai_fmt;
504 	priv->card.num_links = 1;
505 
506 	if (asrc_pdev) {
507 		/* DPCM DAI Links only if ASRC exsits */
508 		priv->dai_link[1].cpu_of_node = asrc_np;
509 		priv->dai_link[1].platform_of_node = asrc_np;
510 		priv->dai_link[2].codec_dai_name = codec_dev->name;
511 		priv->dai_link[2].codec_of_node = codec_np;
512 		priv->dai_link[2].cpu_of_node = cpu_np;
513 		priv->dai_link[2].dai_fmt = priv->dai_fmt;
514 		priv->card.num_links = 3;
515 
516 		ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
517 					   &priv->asrc_rate);
518 		if (ret) {
519 			dev_err(&pdev->dev, "failed to get output rate\n");
520 			ret = -EINVAL;
521 			goto asrc_fail;
522 		}
523 
524 		ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
525 		if (ret) {
526 			dev_err(&pdev->dev, "failed to get output rate\n");
527 			ret = -EINVAL;
528 			goto asrc_fail;
529 		}
530 
531 		if (width == 24)
532 			priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
533 		else
534 			priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
535 	}
536 
537 	/* Finish card registering */
538 	platform_set_drvdata(pdev, priv);
539 	snd_soc_card_set_drvdata(&priv->card, priv);
540 
541 	ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
542 	if (ret)
543 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
544 
545 asrc_fail:
546 	of_node_put(asrc_np);
547 fail:
548 	of_node_put(codec_np);
549 	of_node_put(cpu_np);
550 
551 	return ret;
552 }
553 
554 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
555 	{ .compatible = "fsl,imx-audio-cs42888", },
556 	{ .compatible = "fsl,imx-audio-sgtl5000", },
557 	{ .compatible = "fsl,imx-audio-wm8962", },
558 	{}
559 };
560 
561 static struct platform_driver fsl_asoc_card_driver = {
562 	.probe = fsl_asoc_card_probe,
563 	.driver = {
564 		.name = "fsl-asoc-card",
565 		.pm = &snd_soc_pm_ops,
566 		.of_match_table = fsl_asoc_card_dt_ids,
567 	},
568 };
569 module_platform_driver(fsl_asoc_card_driver);
570 
571 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
572 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
573 MODULE_ALIAS("platform:fsl-asoc-card");
574 MODULE_LICENSE("GPL");
575