xref: /linux/sound/soc/fsl/fsl-asoc-card.c (revision 680e6ffa15103ab610c0fc1241d2f98c801b13e2)
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Freescale Generic ASoC Sound Card driver with ASRC
4 //
5 // Copyright (C) 2014 Freescale Semiconductor, Inc.
6 //
7 // Author: Nicolin Chen <nicoleotsuka@gmail.com>
8 
9 #include <linux/clk.h>
10 #include <linux/i2c.h>
11 #include <linux/module.h>
12 #include <linux/of_platform.h>
13 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
14 #include <sound/ac97_codec.h>
15 #endif
16 #include <sound/pcm_params.h>
17 #include <sound/soc.h>
18 
19 #include "fsl_esai.h"
20 #include "fsl_sai.h"
21 #include "imx-audmux.h"
22 
23 #include "../codecs/sgtl5000.h"
24 #include "../codecs/wm8962.h"
25 #include "../codecs/wm8960.h"
26 
27 #define CS427x_SYSCLK_MCLK 0
28 
29 #define RX 0
30 #define TX 1
31 
32 /* Default DAI format without Master and Slave flag */
33 #define DAI_FMT_BASE (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF)
34 
35 /**
36  * CODEC private data
37  *
38  * @mclk_freq: Clock rate of MCLK
39  * @mclk_id: MCLK (or main clock) id for set_sysclk()
40  * @fll_id: FLL (or secordary clock) id for set_sysclk()
41  * @pll_id: PLL id for set_pll()
42  */
43 struct codec_priv {
44 	unsigned long mclk_freq;
45 	u32 mclk_id;
46 	u32 fll_id;
47 	u32 pll_id;
48 };
49 
50 /**
51  * CPU private data
52  *
53  * @sysclk_freq[2]: SYSCLK rates for set_sysclk()
54  * @sysclk_dir[2]: SYSCLK directions for set_sysclk()
55  * @sysclk_id[2]: SYSCLK ids for set_sysclk()
56  * @slot_width: Slot width of each frame
57  *
58  * Note: [1] for tx and [0] for rx
59  */
60 struct cpu_priv {
61 	unsigned long sysclk_freq[2];
62 	u32 sysclk_dir[2];
63 	u32 sysclk_id[2];
64 	u32 slot_width;
65 };
66 
67 /**
68  * Freescale Generic ASOC card private data
69  *
70  * @dai_link[3]: DAI link structure including normal one and DPCM link
71  * @pdev: platform device pointer
72  * @codec_priv: CODEC private data
73  * @cpu_priv: CPU private data
74  * @card: ASoC card structure
75  * @sample_rate: Current sample rate
76  * @sample_format: Current sample format
77  * @asrc_rate: ASRC sample rate used by Back-Ends
78  * @asrc_format: ASRC sample format used by Back-Ends
79  * @dai_fmt: DAI format between CPU and CODEC
80  * @name: Card name
81  */
82 
83 struct fsl_asoc_card_priv {
84 	struct snd_soc_dai_link dai_link[3];
85 	struct platform_device *pdev;
86 	struct codec_priv codec_priv;
87 	struct cpu_priv cpu_priv;
88 	struct snd_soc_card card;
89 	u32 sample_rate;
90 	snd_pcm_format_t sample_format;
91 	u32 asrc_rate;
92 	snd_pcm_format_t asrc_format;
93 	u32 dai_fmt;
94 	char name[32];
95 };
96 
97 /**
98  * This dapm route map exsits for DPCM link only.
99  * The other routes shall go through Device Tree.
100  *
101  * Note: keep all ASRC routes in the second half
102  *	 to drop them easily for non-ASRC cases.
103  */
104 static const struct snd_soc_dapm_route audio_map[] = {
105 	/* 1st half -- Normal DAPM routes */
106 	{"Playback",  NULL, "CPU-Playback"},
107 	{"CPU-Capture",  NULL, "Capture"},
108 	/* 2nd half -- ASRC DAPM routes */
109 	{"CPU-Playback",  NULL, "ASRC-Playback"},
110 	{"ASRC-Capture",  NULL, "CPU-Capture"},
111 };
112 
113 static const struct snd_soc_dapm_route audio_map_ac97[] = {
114 	/* 1st half -- Normal DAPM routes */
115 	{"Playback",  NULL, "AC97 Playback"},
116 	{"AC97 Capture",  NULL, "Capture"},
117 	/* 2nd half -- ASRC DAPM routes */
118 	{"AC97 Playback",  NULL, "ASRC-Playback"},
119 	{"ASRC-Capture",  NULL, "AC97 Capture"},
120 };
121 
122 /* Add all possible widgets into here without being redundant */
123 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
124 	SND_SOC_DAPM_LINE("Line Out Jack", NULL),
125 	SND_SOC_DAPM_LINE("Line In Jack", NULL),
126 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
127 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
128 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
129 	SND_SOC_DAPM_MIC("AMIC", NULL),
130 	SND_SOC_DAPM_MIC("DMIC", NULL),
131 };
132 
133 static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
134 {
135 	return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
136 }
137 
138 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
139 				   struct snd_pcm_hw_params *params)
140 {
141 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
142 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
143 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
144 	struct cpu_priv *cpu_priv = &priv->cpu_priv;
145 	struct device *dev = rtd->card->dev;
146 	int ret;
147 
148 	priv->sample_rate = params_rate(params);
149 	priv->sample_format = params_format(params);
150 
151 	/*
152 	 * If codec-dai is DAI Master and all configurations are already in the
153 	 * set_bias_level(), bypass the remaining settings in hw_params().
154 	 * Note: (dai_fmt & CBM_CFM) includes CBM_CFM and CBM_CFS.
155 	 */
156 	if ((priv->card.set_bias_level &&
157 	     priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) ||
158 	    fsl_asoc_card_is_ac97(priv))
159 		return 0;
160 
161 	/* Specific configurations of DAIs starts from here */
162 	ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, cpu_priv->sysclk_id[tx],
163 				     cpu_priv->sysclk_freq[tx],
164 				     cpu_priv->sysclk_dir[tx]);
165 	if (ret && ret != -ENOTSUPP) {
166 		dev_err(dev, "failed to set sysclk for cpu dai\n");
167 		return ret;
168 	}
169 
170 	if (cpu_priv->slot_width) {
171 		ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2,
172 					       cpu_priv->slot_width);
173 		if (ret && ret != -ENOTSUPP) {
174 			dev_err(dev, "failed to set TDM slot for cpu dai\n");
175 			return ret;
176 		}
177 	}
178 
179 	return 0;
180 }
181 
182 static const struct snd_soc_ops fsl_asoc_card_ops = {
183 	.hw_params = fsl_asoc_card_hw_params,
184 };
185 
186 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
187 			      struct snd_pcm_hw_params *params)
188 {
189 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
190 	struct snd_interval *rate;
191 	struct snd_mask *mask;
192 
193 	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
194 	rate->max = rate->min = priv->asrc_rate;
195 
196 	mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
197 	snd_mask_none(mask);
198 	snd_mask_set_format(mask, priv->asrc_format);
199 
200 	return 0;
201 }
202 
203 static struct snd_soc_dai_link fsl_asoc_card_dai[] = {
204 	/* Default ASoC DAI Link*/
205 	{
206 		.name = "HiFi",
207 		.stream_name = "HiFi",
208 		.ops = &fsl_asoc_card_ops,
209 	},
210 	/* DPCM Link between Front-End and Back-End (Optional) */
211 	{
212 		.name = "HiFi-ASRC-FE",
213 		.stream_name = "HiFi-ASRC-FE",
214 		.codec_name = "snd-soc-dummy",
215 		.codec_dai_name = "snd-soc-dummy-dai",
216 		.dpcm_playback = 1,
217 		.dpcm_capture = 1,
218 		.dynamic = 1,
219 	},
220 	{
221 		.name = "HiFi-ASRC-BE",
222 		.stream_name = "HiFi-ASRC-BE",
223 		.platform_name = "snd-soc-dummy",
224 		.be_hw_params_fixup = be_hw_params_fixup,
225 		.ops = &fsl_asoc_card_ops,
226 		.dpcm_playback = 1,
227 		.dpcm_capture = 1,
228 		.no_pcm = 1,
229 	},
230 };
231 
232 static int fsl_asoc_card_set_bias_level(struct snd_soc_card *card,
233 					struct snd_soc_dapm_context *dapm,
234 					enum snd_soc_bias_level level)
235 {
236 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
237 	struct snd_soc_pcm_runtime *rtd;
238 	struct snd_soc_dai *codec_dai;
239 	struct codec_priv *codec_priv = &priv->codec_priv;
240 	struct device *dev = card->dev;
241 	unsigned int pll_out;
242 	int ret;
243 
244 	rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
245 	codec_dai = rtd->codec_dai;
246 	if (dapm->dev != codec_dai->dev)
247 		return 0;
248 
249 	switch (level) {
250 	case SND_SOC_BIAS_PREPARE:
251 		if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
252 			break;
253 
254 		if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
255 			pll_out = priv->sample_rate * 384;
256 		else
257 			pll_out = priv->sample_rate * 256;
258 
259 		ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id,
260 					  codec_priv->mclk_id,
261 					  codec_priv->mclk_freq, pll_out);
262 		if (ret) {
263 			dev_err(dev, "failed to start FLL: %d\n", ret);
264 			return ret;
265 		}
266 
267 		ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->fll_id,
268 					     pll_out, SND_SOC_CLOCK_IN);
269 		if (ret && ret != -ENOTSUPP) {
270 			dev_err(dev, "failed to set SYSCLK: %d\n", ret);
271 			return ret;
272 		}
273 		break;
274 
275 	case SND_SOC_BIAS_STANDBY:
276 		if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
277 			break;
278 
279 		ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
280 					     codec_priv->mclk_freq,
281 					     SND_SOC_CLOCK_IN);
282 		if (ret && ret != -ENOTSUPP) {
283 			dev_err(dev, "failed to switch away from FLL: %d\n", ret);
284 			return ret;
285 		}
286 
287 		ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 0, 0, 0);
288 		if (ret) {
289 			dev_err(dev, "failed to stop FLL: %d\n", ret);
290 			return ret;
291 		}
292 		break;
293 
294 	default:
295 		break;
296 	}
297 
298 	return 0;
299 }
300 
301 static int fsl_asoc_card_audmux_init(struct device_node *np,
302 				     struct fsl_asoc_card_priv *priv)
303 {
304 	struct device *dev = &priv->pdev->dev;
305 	u32 int_ptcr = 0, ext_ptcr = 0;
306 	int int_port, ext_port;
307 	int ret;
308 
309 	ret = of_property_read_u32(np, "mux-int-port", &int_port);
310 	if (ret) {
311 		dev_err(dev, "mux-int-port missing or invalid\n");
312 		return ret;
313 	}
314 	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
315 	if (ret) {
316 		dev_err(dev, "mux-ext-port missing or invalid\n");
317 		return ret;
318 	}
319 
320 	/*
321 	 * The port numbering in the hardware manual starts at 1, while
322 	 * the AUDMUX API expects it starts at 0.
323 	 */
324 	int_port--;
325 	ext_port--;
326 
327 	/*
328 	 * Use asynchronous mode (6 wires) for all cases except AC97.
329 	 * If only 4 wires are needed, just set SSI into
330 	 * synchronous mode and enable 4 PADs in IOMUX.
331 	 */
332 	switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
333 	case SND_SOC_DAIFMT_CBM_CFM:
334 		int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
335 			   IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
336 			   IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
337 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
338 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
339 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
340 			   IMX_AUDMUX_V2_PTCR_TFSDIR |
341 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
342 		break;
343 	case SND_SOC_DAIFMT_CBM_CFS:
344 		int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
345 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
346 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
347 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
348 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
349 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
350 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
351 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
352 		break;
353 	case SND_SOC_DAIFMT_CBS_CFM:
354 		int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
355 			   IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
356 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
357 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
358 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
359 			   IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
360 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
361 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
362 		break;
363 	case SND_SOC_DAIFMT_CBS_CFS:
364 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
365 			   IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
366 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
367 			   IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
368 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
369 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
370 			   IMX_AUDMUX_V2_PTCR_TFSDIR |
371 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
372 		break;
373 	default:
374 		if (!fsl_asoc_card_is_ac97(priv))
375 			return -EINVAL;
376 	}
377 
378 	if (fsl_asoc_card_is_ac97(priv)) {
379 		int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
380 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
381 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
382 		ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
383 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
384 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
385 	}
386 
387 	/* Asynchronous mode can not be set along with RCLKDIR */
388 	if (!fsl_asoc_card_is_ac97(priv)) {
389 		unsigned int pdcr =
390 				IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
391 
392 		ret = imx_audmux_v2_configure_port(int_port, 0,
393 						   pdcr);
394 		if (ret) {
395 			dev_err(dev, "audmux internal port setup failed\n");
396 			return ret;
397 		}
398 	}
399 
400 	ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
401 					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
402 	if (ret) {
403 		dev_err(dev, "audmux internal port setup failed\n");
404 		return ret;
405 	}
406 
407 	if (!fsl_asoc_card_is_ac97(priv)) {
408 		unsigned int pdcr =
409 				IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
410 
411 		ret = imx_audmux_v2_configure_port(ext_port, 0,
412 						   pdcr);
413 		if (ret) {
414 			dev_err(dev, "audmux external port setup failed\n");
415 			return ret;
416 		}
417 	}
418 
419 	ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
420 					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
421 	if (ret) {
422 		dev_err(dev, "audmux external port setup failed\n");
423 		return ret;
424 	}
425 
426 	return 0;
427 }
428 
429 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
430 {
431 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
432 	struct snd_soc_pcm_runtime *rtd = list_first_entry(
433 			&card->rtd_list, struct snd_soc_pcm_runtime, list);
434 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
435 	struct codec_priv *codec_priv = &priv->codec_priv;
436 	struct device *dev = card->dev;
437 	int ret;
438 
439 	if (fsl_asoc_card_is_ac97(priv)) {
440 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
441 		struct snd_soc_component *component = rtd->codec_dai->component;
442 		struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
443 
444 		/*
445 		 * Use slots 3/4 for S/PDIF so SSI won't try to enable
446 		 * other slots and send some samples there
447 		 * due to SLOTREQ bits for S/PDIF received from codec
448 		 */
449 		snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
450 				     AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
451 #endif
452 
453 		return 0;
454 	}
455 
456 	ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
457 				     codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
458 	if (ret && ret != -ENOTSUPP) {
459 		dev_err(dev, "failed to set sysclk in %s\n", __func__);
460 		return ret;
461 	}
462 
463 	return 0;
464 }
465 
466 static int fsl_asoc_card_probe(struct platform_device *pdev)
467 {
468 	struct device_node *cpu_np, *codec_np, *asrc_np;
469 	struct device_node *np = pdev->dev.of_node;
470 	struct platform_device *asrc_pdev = NULL;
471 	struct platform_device *cpu_pdev;
472 	struct fsl_asoc_card_priv *priv;
473 	struct i2c_client *codec_dev;
474 	const char *codec_dai_name;
475 	u32 width;
476 	int ret;
477 
478 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
479 	if (!priv)
480 		return -ENOMEM;
481 
482 	cpu_np = of_parse_phandle(np, "audio-cpu", 0);
483 	/* Give a chance to old DT binding */
484 	if (!cpu_np)
485 		cpu_np = of_parse_phandle(np, "ssi-controller", 0);
486 	if (!cpu_np) {
487 		dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
488 		ret = -EINVAL;
489 		goto fail;
490 	}
491 
492 	cpu_pdev = of_find_device_by_node(cpu_np);
493 	if (!cpu_pdev) {
494 		dev_err(&pdev->dev, "failed to find CPU DAI device\n");
495 		ret = -EINVAL;
496 		goto fail;
497 	}
498 
499 	codec_np = of_parse_phandle(np, "audio-codec", 0);
500 	if (codec_np)
501 		codec_dev = of_find_i2c_device_by_node(codec_np);
502 	else
503 		codec_dev = NULL;
504 
505 	asrc_np = of_parse_phandle(np, "audio-asrc", 0);
506 	if (asrc_np)
507 		asrc_pdev = of_find_device_by_node(asrc_np);
508 
509 	/* Get the MCLK rate only, and leave it controlled by CODEC drivers */
510 	if (codec_dev) {
511 		struct clk *codec_clk = clk_get(&codec_dev->dev, NULL);
512 
513 		if (!IS_ERR(codec_clk)) {
514 			priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
515 			clk_put(codec_clk);
516 		}
517 	}
518 
519 	/* Default sample rate and format, will be updated in hw_params() */
520 	priv->sample_rate = 44100;
521 	priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
522 
523 	/* Assign a default DAI format, and allow each card to overwrite it */
524 	priv->dai_fmt = DAI_FMT_BASE;
525 
526 	/* Diversify the card configurations */
527 	if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
528 		codec_dai_name = "cs42888";
529 		priv->card.set_bias_level = NULL;
530 		priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
531 		priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
532 		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
533 		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
534 		priv->cpu_priv.slot_width = 32;
535 		priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
536 	} else if (of_device_is_compatible(np, "fsl,imx-audio-cs427x")) {
537 		codec_dai_name = "cs4271-hifi";
538 		priv->codec_priv.mclk_id = CS427x_SYSCLK_MCLK;
539 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
540 	} else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
541 		codec_dai_name = "sgtl5000";
542 		priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
543 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
544 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
545 		codec_dai_name = "wm8962";
546 		priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
547 		priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
548 		priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
549 		priv->codec_priv.pll_id = WM8962_FLL;
550 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
551 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
552 		codec_dai_name = "wm8960-hifi";
553 		priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
554 		priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
555 		priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
556 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
557 	} else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
558 		codec_dai_name = "ac97-hifi";
559 		priv->card.set_bias_level = NULL;
560 		priv->dai_fmt = SND_SOC_DAIFMT_AC97;
561 	} else {
562 		dev_err(&pdev->dev, "unknown Device Tree compatible\n");
563 		ret = -EINVAL;
564 		goto asrc_fail;
565 	}
566 
567 	if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
568 		dev_err(&pdev->dev, "failed to find codec device\n");
569 		ret = -EINVAL;
570 		goto asrc_fail;
571 	}
572 
573 	/* Common settings for corresponding Freescale CPU DAI driver */
574 	if (of_node_name_eq(cpu_np, "ssi")) {
575 		/* Only SSI needs to configure AUDMUX */
576 		ret = fsl_asoc_card_audmux_init(np, priv);
577 		if (ret) {
578 			dev_err(&pdev->dev, "failed to init audmux\n");
579 			goto asrc_fail;
580 		}
581 	} else if (of_node_name_eq(cpu_np, "esai")) {
582 		priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
583 		priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
584 	} else if (of_node_name_eq(cpu_np, "sai")) {
585 		priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
586 		priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
587 	}
588 
589 	snprintf(priv->name, sizeof(priv->name), "%s-audio",
590 		 fsl_asoc_card_is_ac97(priv) ? "ac97" :
591 		 codec_dev->name);
592 
593 	/* Initialize sound card */
594 	priv->pdev = pdev;
595 	priv->card.dev = &pdev->dev;
596 	priv->card.name = priv->name;
597 	priv->card.dai_link = priv->dai_link;
598 	priv->card.dapm_routes = fsl_asoc_card_is_ac97(priv) ?
599 				 audio_map_ac97 : audio_map;
600 	priv->card.late_probe = fsl_asoc_card_late_probe;
601 	priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
602 	priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
603 	priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
604 
605 	/* Drop the second half of DAPM routes -- ASRC */
606 	if (!asrc_pdev)
607 		priv->card.num_dapm_routes /= 2;
608 
609 	memcpy(priv->dai_link, fsl_asoc_card_dai,
610 	       sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
611 
612 	ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
613 	if (ret) {
614 		dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
615 		goto asrc_fail;
616 	}
617 
618 	/* Normal DAI Link */
619 	priv->dai_link[0].cpu_of_node = cpu_np;
620 	priv->dai_link[0].codec_dai_name = codec_dai_name;
621 
622 	if (!fsl_asoc_card_is_ac97(priv))
623 		priv->dai_link[0].codec_of_node = codec_np;
624 	else {
625 		u32 idx;
626 
627 		ret = of_property_read_u32(cpu_np, "cell-index", &idx);
628 		if (ret) {
629 			dev_err(&pdev->dev,
630 				"cannot get CPU index property\n");
631 			goto asrc_fail;
632 		}
633 
634 		priv->dai_link[0].codec_name =
635 				devm_kasprintf(&pdev->dev, GFP_KERNEL,
636 					       "ac97-codec.%u",
637 					       (unsigned int)idx);
638 		if (!priv->dai_link[0].codec_name) {
639 			ret = -ENOMEM;
640 			goto asrc_fail;
641 		}
642 	}
643 
644 	priv->dai_link[0].platform_of_node = cpu_np;
645 	priv->dai_link[0].dai_fmt = priv->dai_fmt;
646 	priv->card.num_links = 1;
647 
648 	if (asrc_pdev) {
649 		/* DPCM DAI Links only if ASRC exsits */
650 		priv->dai_link[1].cpu_of_node = asrc_np;
651 		priv->dai_link[1].platform_of_node = asrc_np;
652 		priv->dai_link[2].codec_dai_name = codec_dai_name;
653 		priv->dai_link[2].codec_of_node = codec_np;
654 		priv->dai_link[2].codec_name =
655 				priv->dai_link[0].codec_name;
656 		priv->dai_link[2].cpu_of_node = cpu_np;
657 		priv->dai_link[2].dai_fmt = priv->dai_fmt;
658 		priv->card.num_links = 3;
659 
660 		ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
661 					   &priv->asrc_rate);
662 		if (ret) {
663 			dev_err(&pdev->dev, "failed to get output rate\n");
664 			ret = -EINVAL;
665 			goto asrc_fail;
666 		}
667 
668 		ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
669 		if (ret) {
670 			dev_err(&pdev->dev, "failed to get output rate\n");
671 			ret = -EINVAL;
672 			goto asrc_fail;
673 		}
674 
675 		if (width == 24)
676 			priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
677 		else
678 			priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
679 	}
680 
681 	/* Finish card registering */
682 	platform_set_drvdata(pdev, priv);
683 	snd_soc_card_set_drvdata(&priv->card, priv);
684 
685 	ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
686 	if (ret && ret != -EPROBE_DEFER)
687 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
688 
689 asrc_fail:
690 	of_node_put(asrc_np);
691 	of_node_put(codec_np);
692 	put_device(&cpu_pdev->dev);
693 fail:
694 	of_node_put(cpu_np);
695 
696 	return ret;
697 }
698 
699 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
700 	{ .compatible = "fsl,imx-audio-ac97", },
701 	{ .compatible = "fsl,imx-audio-cs42888", },
702 	{ .compatible = "fsl,imx-audio-cs427x", },
703 	{ .compatible = "fsl,imx-audio-sgtl5000", },
704 	{ .compatible = "fsl,imx-audio-wm8962", },
705 	{ .compatible = "fsl,imx-audio-wm8960", },
706 	{}
707 };
708 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
709 
710 static struct platform_driver fsl_asoc_card_driver = {
711 	.probe = fsl_asoc_card_probe,
712 	.driver = {
713 		.name = "fsl-asoc-card",
714 		.pm = &snd_soc_pm_ops,
715 		.of_match_table = fsl_asoc_card_dt_ids,
716 	},
717 };
718 module_platform_driver(fsl_asoc_card_driver);
719 
720 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
721 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
722 MODULE_ALIAS("platform:fsl-asoc-card");
723 MODULE_LICENSE("GPL");
724