xref: /openbmc/linux/sound/soc/fsl/fsl-asoc-card.c (revision 29bc9e7c)
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 #include <sound/jack.h>
19 #include <sound/simple_card_utils.h>
20 
21 #include "fsl_esai.h"
22 #include "fsl_sai.h"
23 #include "imx-audmux.h"
24 
25 #include "../codecs/sgtl5000.h"
26 #include "../codecs/wm8962.h"
27 #include "../codecs/wm8960.h"
28 #include "../codecs/wm8994.h"
29 #include "../codecs/tlv320aic31xx.h"
30 #include "../codecs/nau8822.h"
31 
32 #define DRIVER_NAME "fsl-asoc-card"
33 
34 #define CS427x_SYSCLK_MCLK 0
35 
36 #define RX 0
37 #define TX 1
38 
39 /* Default DAI format without Master and Slave flag */
40 #define DAI_FMT_BASE (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF)
41 
42 /**
43  * struct codec_priv - CODEC private data
44  * @mclk: Main clock of the CODEC
45  * @mclk_freq: Clock rate of MCLK
46  * @free_freq: Clock rate of MCLK for hw_free()
47  * @mclk_id: MCLK (or main clock) id for set_sysclk()
48  * @fll_id: FLL (or secordary clock) id for set_sysclk()
49  * @pll_id: PLL id for set_pll()
50  */
51 struct codec_priv {
52 	struct clk *mclk;
53 	unsigned long mclk_freq;
54 	unsigned long free_freq;
55 	u32 mclk_id;
56 	int fll_id;
57 	int pll_id;
58 };
59 
60 /**
61  * struct cpu_priv - CPU private data
62  * @sysclk_freq: SYSCLK rates for set_sysclk()
63  * @sysclk_dir: SYSCLK directions for set_sysclk()
64  * @sysclk_id: SYSCLK ids for set_sysclk()
65  * @slot_width: Slot width of each frame
66  * @slot_num: Number of slots of each frame
67  *
68  * Note: [1] for tx and [0] for rx
69  */
70 struct cpu_priv {
71 	unsigned long sysclk_freq[2];
72 	u32 sysclk_dir[2];
73 	u32 sysclk_id[2];
74 	u32 slot_width;
75 	u32 slot_num;
76 };
77 
78 /**
79  * struct fsl_asoc_card_priv - Freescale Generic ASOC card private data
80  * @dai_link: DAI link structure including normal one and DPCM link
81  * @hp_jack: Headphone Jack structure
82  * @mic_jack: Microphone Jack structure
83  * @pdev: platform device pointer
84  * @codec_priv: CODEC private data
85  * @cpu_priv: CPU private data
86  * @card: ASoC card structure
87  * @streams: Mask of current active streams
88  * @sample_rate: Current sample rate
89  * @sample_format: Current sample format
90  * @asrc_rate: ASRC sample rate used by Back-Ends
91  * @asrc_format: ASRC sample format used by Back-Ends
92  * @dai_fmt: DAI format between CPU and CODEC
93  * @name: Card name
94  */
95 
96 struct fsl_asoc_card_priv {
97 	struct snd_soc_dai_link dai_link[3];
98 	struct asoc_simple_jack hp_jack;
99 	struct asoc_simple_jack mic_jack;
100 	struct platform_device *pdev;
101 	struct codec_priv codec_priv;
102 	struct cpu_priv cpu_priv;
103 	struct snd_soc_card card;
104 	u8 streams;
105 	u32 sample_rate;
106 	snd_pcm_format_t sample_format;
107 	u32 asrc_rate;
108 	snd_pcm_format_t asrc_format;
109 	u32 dai_fmt;
110 	char name[32];
111 };
112 
113 /*
114  * This dapm route map exists for DPCM link only.
115  * The other routes shall go through Device Tree.
116  *
117  * Note: keep all ASRC routes in the second half
118  *	 to drop them easily for non-ASRC cases.
119  */
120 static const struct snd_soc_dapm_route audio_map[] = {
121 	/* 1st half -- Normal DAPM routes */
122 	{"Playback",  NULL, "CPU-Playback"},
123 	{"CPU-Capture",  NULL, "Capture"},
124 	/* 2nd half -- ASRC DAPM routes */
125 	{"CPU-Playback",  NULL, "ASRC-Playback"},
126 	{"ASRC-Capture",  NULL, "CPU-Capture"},
127 };
128 
129 static const struct snd_soc_dapm_route audio_map_ac97[] = {
130 	/* 1st half -- Normal DAPM routes */
131 	{"AC97 Playback",  NULL, "CPU AC97 Playback"},
132 	{"CPU AC97 Capture",  NULL, "AC97 Capture"},
133 	/* 2nd half -- ASRC DAPM routes */
134 	{"CPU AC97 Playback",  NULL, "ASRC-Playback"},
135 	{"ASRC-Capture",  NULL, "CPU AC97 Capture"},
136 };
137 
138 static const struct snd_soc_dapm_route audio_map_tx[] = {
139 	/* 1st half -- Normal DAPM routes */
140 	{"Playback",  NULL, "CPU-Playback"},
141 	/* 2nd half -- ASRC DAPM routes */
142 	{"CPU-Playback",  NULL, "ASRC-Playback"},
143 };
144 
145 static const struct snd_soc_dapm_route audio_map_rx[] = {
146 	/* 1st half -- Normal DAPM routes */
147 	{"CPU-Capture",  NULL, "Capture"},
148 	/* 2nd half -- ASRC DAPM routes */
149 	{"ASRC-Capture",  NULL, "CPU-Capture"},
150 };
151 
152 /* Add all possible widgets into here without being redundant */
153 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
154 	SND_SOC_DAPM_LINE("Line Out Jack", NULL),
155 	SND_SOC_DAPM_LINE("Line In Jack", NULL),
156 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
157 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
158 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
159 	SND_SOC_DAPM_MIC("AMIC", NULL),
160 	SND_SOC_DAPM_MIC("DMIC", NULL),
161 };
162 
fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv * priv)163 static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
164 {
165 	return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
166 }
167 
fsl_asoc_card_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)168 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
169 				   struct snd_pcm_hw_params *params)
170 {
171 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
172 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
173 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
174 	struct codec_priv *codec_priv = &priv->codec_priv;
175 	struct cpu_priv *cpu_priv = &priv->cpu_priv;
176 	struct device *dev = rtd->card->dev;
177 	unsigned int pll_out;
178 	int ret;
179 
180 	priv->sample_rate = params_rate(params);
181 	priv->sample_format = params_format(params);
182 	priv->streams |= BIT(substream->stream);
183 
184 	if (fsl_asoc_card_is_ac97(priv))
185 		return 0;
186 
187 	/* Specific configurations of DAIs starts from here */
188 	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), cpu_priv->sysclk_id[tx],
189 				     cpu_priv->sysclk_freq[tx],
190 				     cpu_priv->sysclk_dir[tx]);
191 	if (ret && ret != -ENOTSUPP) {
192 		dev_err(dev, "failed to set sysclk for cpu dai\n");
193 		goto fail;
194 	}
195 
196 	if (cpu_priv->slot_width) {
197 		if (!cpu_priv->slot_num)
198 			cpu_priv->slot_num = 2;
199 
200 		ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3,
201 					       cpu_priv->slot_num,
202 					       cpu_priv->slot_width);
203 		if (ret && ret != -ENOTSUPP) {
204 			dev_err(dev, "failed to set TDM slot for cpu dai\n");
205 			goto fail;
206 		}
207 	}
208 
209 	/* Specific configuration for PLL */
210 	if (codec_priv->pll_id >= 0 && codec_priv->fll_id >= 0) {
211 		if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
212 			pll_out = priv->sample_rate * 384;
213 		else
214 			pll_out = priv->sample_rate * 256;
215 
216 		ret = snd_soc_dai_set_pll(asoc_rtd_to_codec(rtd, 0),
217 					  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 			goto fail;
223 		}
224 
225 		ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0),
226 					     codec_priv->fll_id,
227 					     pll_out, SND_SOC_CLOCK_IN);
228 
229 		if (ret && ret != -ENOTSUPP) {
230 			dev_err(dev, "failed to set SYSCLK: %d\n", ret);
231 			goto fail;
232 		}
233 	}
234 
235 	return 0;
236 
237 fail:
238 	priv->streams &= ~BIT(substream->stream);
239 	return ret;
240 }
241 
fsl_asoc_card_hw_free(struct snd_pcm_substream * substream)242 static int fsl_asoc_card_hw_free(struct snd_pcm_substream *substream)
243 {
244 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
245 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
246 	struct codec_priv *codec_priv = &priv->codec_priv;
247 	struct device *dev = rtd->card->dev;
248 	int ret;
249 
250 	priv->streams &= ~BIT(substream->stream);
251 
252 	if (!priv->streams && codec_priv->pll_id >= 0 && codec_priv->fll_id >= 0) {
253 		/* Force freq to be free_freq to avoid error message in codec */
254 		ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0),
255 					     codec_priv->mclk_id,
256 					     codec_priv->free_freq,
257 					     SND_SOC_CLOCK_IN);
258 		if (ret) {
259 			dev_err(dev, "failed to switch away from FLL: %d\n", ret);
260 			return ret;
261 		}
262 
263 		ret = snd_soc_dai_set_pll(asoc_rtd_to_codec(rtd, 0),
264 					  codec_priv->pll_id, 0, 0, 0);
265 		if (ret && ret != -ENOTSUPP) {
266 			dev_err(dev, "failed to stop FLL: %d\n", ret);
267 			return ret;
268 		}
269 	}
270 
271 	return 0;
272 }
273 
274 static const struct snd_soc_ops fsl_asoc_card_ops = {
275 	.hw_params = fsl_asoc_card_hw_params,
276 	.hw_free = fsl_asoc_card_hw_free,
277 };
278 
be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)279 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
280 			      struct snd_pcm_hw_params *params)
281 {
282 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
283 	struct snd_interval *rate;
284 	struct snd_mask *mask;
285 
286 	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
287 	rate->max = rate->min = priv->asrc_rate;
288 
289 	mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
290 	snd_mask_none(mask);
291 	snd_mask_set_format(mask, priv->asrc_format);
292 
293 	return 0;
294 }
295 
296 SND_SOC_DAILINK_DEFS(hifi,
297 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
298 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
299 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
300 
301 SND_SOC_DAILINK_DEFS(hifi_fe,
302 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
303 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
304 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
305 
306 SND_SOC_DAILINK_DEFS(hifi_be,
307 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
308 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
309 	DAILINK_COMP_ARRAY(COMP_DUMMY()));
310 
311 static const struct snd_soc_dai_link fsl_asoc_card_dai[] = {
312 	/* Default ASoC DAI Link*/
313 	{
314 		.name = "HiFi",
315 		.stream_name = "HiFi",
316 		.ops = &fsl_asoc_card_ops,
317 		SND_SOC_DAILINK_REG(hifi),
318 	},
319 	/* DPCM Link between Front-End and Back-End (Optional) */
320 	{
321 		.name = "HiFi-ASRC-FE",
322 		.stream_name = "HiFi-ASRC-FE",
323 		.dpcm_playback = 1,
324 		.dpcm_capture = 1,
325 		.dynamic = 1,
326 		SND_SOC_DAILINK_REG(hifi_fe),
327 	},
328 	{
329 		.name = "HiFi-ASRC-BE",
330 		.stream_name = "HiFi-ASRC-BE",
331 		.be_hw_params_fixup = be_hw_params_fixup,
332 		.ops = &fsl_asoc_card_ops,
333 		.dpcm_playback = 1,
334 		.dpcm_capture = 1,
335 		.no_pcm = 1,
336 		SND_SOC_DAILINK_REG(hifi_be),
337 	},
338 };
339 
fsl_asoc_card_audmux_init(struct device_node * np,struct fsl_asoc_card_priv * priv)340 static int fsl_asoc_card_audmux_init(struct device_node *np,
341 				     struct fsl_asoc_card_priv *priv)
342 {
343 	struct device *dev = &priv->pdev->dev;
344 	u32 int_ptcr = 0, ext_ptcr = 0;
345 	int int_port, ext_port;
346 	int ret;
347 
348 	ret = of_property_read_u32(np, "mux-int-port", &int_port);
349 	if (ret) {
350 		dev_err(dev, "mux-int-port missing or invalid\n");
351 		return ret;
352 	}
353 	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
354 	if (ret) {
355 		dev_err(dev, "mux-ext-port missing or invalid\n");
356 		return ret;
357 	}
358 
359 	/*
360 	 * The port numbering in the hardware manual starts at 1, while
361 	 * the AUDMUX API expects it starts at 0.
362 	 */
363 	int_port--;
364 	ext_port--;
365 
366 	/*
367 	 * Use asynchronous mode (6 wires) for all cases except AC97.
368 	 * If only 4 wires are needed, just set SSI into
369 	 * synchronous mode and enable 4 PADs in IOMUX.
370 	 */
371 	switch (priv->dai_fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
372 	case SND_SOC_DAIFMT_CBP_CFP:
373 		int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
374 			   IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
375 			   IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
376 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
377 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
378 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
379 			   IMX_AUDMUX_V2_PTCR_TFSDIR |
380 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
381 		break;
382 	case SND_SOC_DAIFMT_CBP_CFC:
383 		int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
384 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
385 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
386 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
387 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
388 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
389 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
390 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
391 		break;
392 	case SND_SOC_DAIFMT_CBC_CFP:
393 		int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
394 			   IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
395 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
396 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
397 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
398 			   IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
399 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
400 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
401 		break;
402 	case SND_SOC_DAIFMT_CBC_CFC:
403 		ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
404 			   IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
405 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
406 			   IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
407 			   IMX_AUDMUX_V2_PTCR_RFSDIR |
408 			   IMX_AUDMUX_V2_PTCR_RCLKDIR |
409 			   IMX_AUDMUX_V2_PTCR_TFSDIR |
410 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
411 		break;
412 	default:
413 		if (!fsl_asoc_card_is_ac97(priv))
414 			return -EINVAL;
415 	}
416 
417 	if (fsl_asoc_card_is_ac97(priv)) {
418 		int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
419 			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
420 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
421 		ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
422 			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
423 			   IMX_AUDMUX_V2_PTCR_TFSDIR;
424 	}
425 
426 	/* Asynchronous mode can not be set along with RCLKDIR */
427 	if (!fsl_asoc_card_is_ac97(priv)) {
428 		unsigned int pdcr =
429 				IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
430 
431 		ret = imx_audmux_v2_configure_port(int_port, 0,
432 						   pdcr);
433 		if (ret) {
434 			dev_err(dev, "audmux internal port setup failed\n");
435 			return ret;
436 		}
437 	}
438 
439 	ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
440 					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
441 	if (ret) {
442 		dev_err(dev, "audmux internal port setup failed\n");
443 		return ret;
444 	}
445 
446 	if (!fsl_asoc_card_is_ac97(priv)) {
447 		unsigned int pdcr =
448 				IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
449 
450 		ret = imx_audmux_v2_configure_port(ext_port, 0,
451 						   pdcr);
452 		if (ret) {
453 			dev_err(dev, "audmux external port setup failed\n");
454 			return ret;
455 		}
456 	}
457 
458 	ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
459 					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
460 	if (ret) {
461 		dev_err(dev, "audmux external port setup failed\n");
462 		return ret;
463 	}
464 
465 	return 0;
466 }
467 
hp_jack_event(struct notifier_block * nb,unsigned long event,void * data)468 static int hp_jack_event(struct notifier_block *nb, unsigned long event,
469 			 void *data)
470 {
471 	struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
472 	struct snd_soc_dapm_context *dapm = &jack->card->dapm;
473 
474 	if (event & SND_JACK_HEADPHONE)
475 		/* Disable speaker if headphone is plugged in */
476 		return snd_soc_dapm_disable_pin(dapm, "Ext Spk");
477 	else
478 		return snd_soc_dapm_enable_pin(dapm, "Ext Spk");
479 }
480 
481 static struct notifier_block hp_jack_nb = {
482 	.notifier_call = hp_jack_event,
483 };
484 
mic_jack_event(struct notifier_block * nb,unsigned long event,void * data)485 static int mic_jack_event(struct notifier_block *nb, unsigned long event,
486 			  void *data)
487 {
488 	struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
489 	struct snd_soc_dapm_context *dapm = &jack->card->dapm;
490 
491 	if (event & SND_JACK_MICROPHONE)
492 		/* Disable dmic if microphone is plugged in */
493 		return snd_soc_dapm_disable_pin(dapm, "DMIC");
494 	else
495 		return snd_soc_dapm_enable_pin(dapm, "DMIC");
496 }
497 
498 static struct notifier_block mic_jack_nb = {
499 	.notifier_call = mic_jack_event,
500 };
501 
fsl_asoc_card_late_probe(struct snd_soc_card * card)502 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
503 {
504 	struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
505 	struct snd_soc_pcm_runtime *rtd = list_first_entry(
506 			&card->rtd_list, struct snd_soc_pcm_runtime, list);
507 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
508 	struct codec_priv *codec_priv = &priv->codec_priv;
509 	struct device *dev = card->dev;
510 	int ret;
511 
512 	if (fsl_asoc_card_is_ac97(priv)) {
513 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
514 		struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
515 		struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
516 
517 		/*
518 		 * Use slots 3/4 for S/PDIF so SSI won't try to enable
519 		 * other slots and send some samples there
520 		 * due to SLOTREQ bits for S/PDIF received from codec
521 		 */
522 		snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
523 				     AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
524 #endif
525 
526 		return 0;
527 	}
528 
529 	ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
530 				     codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
531 	if (ret && ret != -ENOTSUPP) {
532 		dev_err(dev, "failed to set sysclk in %s\n", __func__);
533 		return ret;
534 	}
535 
536 	if (!IS_ERR_OR_NULL(codec_priv->mclk))
537 		clk_prepare_enable(codec_priv->mclk);
538 
539 	return 0;
540 }
541 
fsl_asoc_card_probe(struct platform_device * pdev)542 static int fsl_asoc_card_probe(struct platform_device *pdev)
543 {
544 	struct device_node *cpu_np, *codec_np, *asrc_np;
545 	struct device_node *np = pdev->dev.of_node;
546 	struct platform_device *asrc_pdev = NULL;
547 	struct device_node *bitclkprovider = NULL;
548 	struct device_node *frameprovider = NULL;
549 	struct platform_device *cpu_pdev;
550 	struct fsl_asoc_card_priv *priv;
551 	struct device *codec_dev = NULL;
552 	const char *codec_dai_name;
553 	const char *codec_dev_name;
554 	u32 asrc_fmt = 0;
555 	u32 width;
556 	int ret;
557 
558 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
559 	if (!priv)
560 		return -ENOMEM;
561 
562 	priv->pdev = pdev;
563 
564 	cpu_np = of_parse_phandle(np, "audio-cpu", 0);
565 	/* Give a chance to old DT binding */
566 	if (!cpu_np)
567 		cpu_np = of_parse_phandle(np, "ssi-controller", 0);
568 	if (!cpu_np) {
569 		dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
570 		ret = -EINVAL;
571 		goto fail;
572 	}
573 
574 	cpu_pdev = of_find_device_by_node(cpu_np);
575 	if (!cpu_pdev) {
576 		dev_err(&pdev->dev, "failed to find CPU DAI device\n");
577 		ret = -EINVAL;
578 		goto fail;
579 	}
580 
581 	codec_np = of_parse_phandle(np, "audio-codec", 0);
582 	if (codec_np) {
583 		struct platform_device *codec_pdev;
584 		struct i2c_client *codec_i2c;
585 
586 		codec_i2c = of_find_i2c_device_by_node(codec_np);
587 		if (codec_i2c) {
588 			codec_dev = &codec_i2c->dev;
589 			codec_dev_name = codec_i2c->name;
590 		}
591 		if (!codec_dev) {
592 			codec_pdev = of_find_device_by_node(codec_np);
593 			if (codec_pdev) {
594 				codec_dev = &codec_pdev->dev;
595 				codec_dev_name = codec_pdev->name;
596 			}
597 		}
598 	}
599 
600 	asrc_np = of_parse_phandle(np, "audio-asrc", 0);
601 	if (asrc_np)
602 		asrc_pdev = of_find_device_by_node(asrc_np);
603 
604 	/* Get the MCLK rate only, and leave it controlled by CODEC drivers */
605 	if (codec_dev) {
606 		struct clk *codec_clk = clk_get(codec_dev, NULL);
607 
608 		if (!IS_ERR(codec_clk)) {
609 			priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
610 			clk_put(codec_clk);
611 		}
612 	}
613 
614 	/* Default sample rate and format, will be updated in hw_params() */
615 	priv->sample_rate = 44100;
616 	priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
617 
618 	/* Assign a default DAI format, and allow each card to overwrite it */
619 	priv->dai_fmt = DAI_FMT_BASE;
620 
621 	memcpy(priv->dai_link, fsl_asoc_card_dai,
622 	       sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
623 
624 	priv->card.dapm_routes = audio_map;
625 	priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
626 	priv->card.driver_name = DRIVER_NAME;
627 
628 	priv->codec_priv.fll_id = -1;
629 	priv->codec_priv.pll_id = -1;
630 
631 	/* Diversify the card configurations */
632 	if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
633 		codec_dai_name = "cs42888";
634 		priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
635 		priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
636 		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
637 		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
638 		priv->cpu_priv.slot_width = 32;
639 		priv->dai_fmt |= SND_SOC_DAIFMT_CBC_CFC;
640 	} else if (of_device_is_compatible(np, "fsl,imx-audio-cs427x")) {
641 		codec_dai_name = "cs4271-hifi";
642 		priv->codec_priv.mclk_id = CS427x_SYSCLK_MCLK;
643 		priv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
644 	} else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
645 		codec_dai_name = "sgtl5000";
646 		priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
647 		priv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
648 	} else if (of_device_is_compatible(np, "fsl,imx-audio-tlv320aic32x4")) {
649 		codec_dai_name = "tlv320aic32x4-hifi";
650 		priv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
651 	} else if (of_device_is_compatible(np, "fsl,imx-audio-tlv320aic31xx")) {
652 		codec_dai_name = "tlv320dac31xx-hifi";
653 		priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
654 		priv->dai_link[1].dpcm_capture = 0;
655 		priv->dai_link[2].dpcm_capture = 0;
656 		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
657 		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
658 		priv->card.dapm_routes = audio_map_tx;
659 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
660 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
661 		codec_dai_name = "wm8962";
662 		priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
663 		priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
664 		priv->codec_priv.pll_id = WM8962_FLL;
665 		priv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
666 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
667 		codec_dai_name = "wm8960-hifi";
668 		priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
669 		priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
670 		priv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
671 	} else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
672 		codec_dai_name = "ac97-hifi";
673 		priv->dai_fmt = SND_SOC_DAIFMT_AC97;
674 		priv->card.dapm_routes = audio_map_ac97;
675 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_ac97);
676 	} else if (of_device_is_compatible(np, "fsl,imx-audio-mqs")) {
677 		codec_dai_name = "fsl-mqs-dai";
678 		priv->dai_fmt = SND_SOC_DAIFMT_LEFT_J |
679 				SND_SOC_DAIFMT_CBC_CFC |
680 				SND_SOC_DAIFMT_NB_NF;
681 		priv->dai_link[1].dpcm_capture = 0;
682 		priv->dai_link[2].dpcm_capture = 0;
683 		priv->card.dapm_routes = audio_map_tx;
684 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
685 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8524")) {
686 		codec_dai_name = "wm8524-hifi";
687 		priv->dai_fmt |= SND_SOC_DAIFMT_CBC_CFC;
688 		priv->dai_link[1].dpcm_capture = 0;
689 		priv->dai_link[2].dpcm_capture = 0;
690 		priv->cpu_priv.slot_width = 32;
691 		priv->card.dapm_routes = audio_map_tx;
692 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
693 	} else if (of_device_is_compatible(np, "fsl,imx-audio-si476x")) {
694 		codec_dai_name = "si476x-codec";
695 		priv->dai_fmt |= SND_SOC_DAIFMT_CBC_CFC;
696 		priv->card.dapm_routes = audio_map_rx;
697 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_rx);
698 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8958")) {
699 		codec_dai_name = "wm8994-aif1";
700 		priv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
701 		priv->codec_priv.mclk_id = WM8994_FLL_SRC_MCLK1;
702 		priv->codec_priv.fll_id = WM8994_SYSCLK_FLL1;
703 		priv->codec_priv.pll_id = WM8994_FLL1;
704 		priv->codec_priv.free_freq = priv->codec_priv.mclk_freq;
705 		priv->card.dapm_routes = NULL;
706 		priv->card.num_dapm_routes = 0;
707 	} else if (of_device_is_compatible(np, "fsl,imx-audio-nau8822")) {
708 		codec_dai_name = "nau8822-hifi";
709 		priv->codec_priv.mclk_id = NAU8822_CLK_MCLK;
710 		priv->codec_priv.fll_id = NAU8822_CLK_PLL;
711 		priv->codec_priv.pll_id = NAU8822_CLK_PLL;
712 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
713 		if (codec_dev)
714 			priv->codec_priv.mclk = devm_clk_get(codec_dev, NULL);
715 	} else {
716 		dev_err(&pdev->dev, "unknown Device Tree compatible\n");
717 		ret = -EINVAL;
718 		goto asrc_fail;
719 	}
720 
721 	/*
722 	 * Allow setting mclk-id from the device-tree node. Otherwise, the
723 	 * default value for each card configuration is used.
724 	 */
725 	of_property_read_u32(np, "mclk-id", &priv->codec_priv.mclk_id);
726 
727 	/* Format info from DT is optional. */
728 	snd_soc_daifmt_parse_clock_provider_as_phandle(np, NULL, &bitclkprovider, &frameprovider);
729 	if (bitclkprovider || frameprovider) {
730 		unsigned int daifmt = snd_soc_daifmt_parse_format(np, NULL);
731 
732 		if (codec_np == bitclkprovider)
733 			daifmt |= (codec_np == frameprovider) ?
734 				SND_SOC_DAIFMT_CBP_CFP : SND_SOC_DAIFMT_CBP_CFC;
735 		else
736 			daifmt |= (codec_np == frameprovider) ?
737 				SND_SOC_DAIFMT_CBC_CFP : SND_SOC_DAIFMT_CBC_CFC;
738 
739 		/* Override dai_fmt with value from DT */
740 		priv->dai_fmt = daifmt;
741 	}
742 
743 	/* Change direction according to format */
744 	if (priv->dai_fmt & SND_SOC_DAIFMT_CBP_CFP) {
745 		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_IN;
746 		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_IN;
747 	}
748 
749 	of_node_put(bitclkprovider);
750 	of_node_put(frameprovider);
751 
752 	if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
753 		dev_dbg(&pdev->dev, "failed to find codec device\n");
754 		ret = -EPROBE_DEFER;
755 		goto asrc_fail;
756 	}
757 
758 	/* Common settings for corresponding Freescale CPU DAI driver */
759 	if (of_node_name_eq(cpu_np, "ssi")) {
760 		/* Only SSI needs to configure AUDMUX */
761 		ret = fsl_asoc_card_audmux_init(np, priv);
762 		if (ret) {
763 			dev_err(&pdev->dev, "failed to init audmux\n");
764 			goto asrc_fail;
765 		}
766 	} else if (of_node_name_eq(cpu_np, "esai")) {
767 		struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal");
768 
769 		if (!IS_ERR(esai_clk)) {
770 			priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk);
771 			priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk);
772 			clk_put(esai_clk);
773 		} else if (PTR_ERR(esai_clk) == -EPROBE_DEFER) {
774 			ret = -EPROBE_DEFER;
775 			goto asrc_fail;
776 		}
777 
778 		priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
779 		priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
780 	} else if (of_node_name_eq(cpu_np, "sai")) {
781 		priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
782 		priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
783 	}
784 
785 	/* Initialize sound card */
786 	priv->card.dev = &pdev->dev;
787 	priv->card.owner = THIS_MODULE;
788 	ret = snd_soc_of_parse_card_name(&priv->card, "model");
789 	if (ret) {
790 		snprintf(priv->name, sizeof(priv->name), "%s-audio",
791 			 fsl_asoc_card_is_ac97(priv) ? "ac97" : codec_dev_name);
792 		priv->card.name = priv->name;
793 	}
794 	priv->card.dai_link = priv->dai_link;
795 	priv->card.late_probe = fsl_asoc_card_late_probe;
796 	priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
797 	priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
798 
799 	/* Drop the second half of DAPM routes -- ASRC */
800 	if (!asrc_pdev)
801 		priv->card.num_dapm_routes /= 2;
802 
803 	if (of_property_read_bool(np, "audio-routing")) {
804 		ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
805 		if (ret) {
806 			dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
807 			goto asrc_fail;
808 		}
809 	}
810 
811 	/* Normal DAI Link */
812 	priv->dai_link[0].cpus->of_node = cpu_np;
813 	priv->dai_link[0].codecs->dai_name = codec_dai_name;
814 
815 	if (!fsl_asoc_card_is_ac97(priv))
816 		priv->dai_link[0].codecs->of_node = codec_np;
817 	else {
818 		u32 idx;
819 
820 		ret = of_property_read_u32(cpu_np, "cell-index", &idx);
821 		if (ret) {
822 			dev_err(&pdev->dev,
823 				"cannot get CPU index property\n");
824 			goto asrc_fail;
825 		}
826 
827 		priv->dai_link[0].codecs->name =
828 				devm_kasprintf(&pdev->dev, GFP_KERNEL,
829 					       "ac97-codec.%u",
830 					       (unsigned int)idx);
831 		if (!priv->dai_link[0].codecs->name) {
832 			ret = -ENOMEM;
833 			goto asrc_fail;
834 		}
835 	}
836 
837 	priv->dai_link[0].platforms->of_node = cpu_np;
838 	priv->dai_link[0].dai_fmt = priv->dai_fmt;
839 	priv->card.num_links = 1;
840 
841 	if (asrc_pdev) {
842 		/* DPCM DAI Links only if ASRC exists */
843 		priv->dai_link[1].cpus->of_node = asrc_np;
844 		priv->dai_link[1].platforms->of_node = asrc_np;
845 		priv->dai_link[2].codecs->dai_name = codec_dai_name;
846 		priv->dai_link[2].codecs->of_node = codec_np;
847 		priv->dai_link[2].codecs->name =
848 				priv->dai_link[0].codecs->name;
849 		priv->dai_link[2].cpus->of_node = cpu_np;
850 		priv->dai_link[2].dai_fmt = priv->dai_fmt;
851 		priv->card.num_links = 3;
852 
853 		ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
854 					   &priv->asrc_rate);
855 		if (ret) {
856 			dev_err(&pdev->dev, "failed to get output rate\n");
857 			ret = -EINVAL;
858 			goto asrc_fail;
859 		}
860 
861 		ret = of_property_read_u32(asrc_np, "fsl,asrc-format", &asrc_fmt);
862 		priv->asrc_format = (__force snd_pcm_format_t)asrc_fmt;
863 		if (ret) {
864 			/* Fallback to old binding; translate to asrc_format */
865 			ret = of_property_read_u32(asrc_np, "fsl,asrc-width",
866 						   &width);
867 			if (ret) {
868 				dev_err(&pdev->dev,
869 					"failed to decide output format\n");
870 				goto asrc_fail;
871 			}
872 
873 			if (width == 24)
874 				priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
875 			else
876 				priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
877 		}
878 	}
879 
880 	/* Finish card registering */
881 	platform_set_drvdata(pdev, priv);
882 	snd_soc_card_set_drvdata(&priv->card, priv);
883 
884 	ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
885 	if (ret) {
886 		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
887 		goto asrc_fail;
888 	}
889 
890 	/*
891 	 * Properties "hp-det-gpio" and "mic-det-gpio" are optional, and
892 	 * asoc_simple_init_jack uses these properties for creating
893 	 * Headphone Jack and Microphone Jack.
894 	 *
895 	 * The notifier is initialized in snd_soc_card_jack_new(), then
896 	 * snd_soc_jack_notifier_register can be called.
897 	 */
898 	if (of_property_read_bool(np, "hp-det-gpio")) {
899 		ret = asoc_simple_init_jack(&priv->card, &priv->hp_jack,
900 					    1, NULL, "Headphone Jack");
901 		if (ret)
902 			goto asrc_fail;
903 
904 		snd_soc_jack_notifier_register(&priv->hp_jack.jack, &hp_jack_nb);
905 	}
906 
907 	if (of_property_read_bool(np, "mic-det-gpio")) {
908 		ret = asoc_simple_init_jack(&priv->card, &priv->mic_jack,
909 					    0, NULL, "Mic Jack");
910 		if (ret)
911 			goto asrc_fail;
912 
913 		snd_soc_jack_notifier_register(&priv->mic_jack.jack, &mic_jack_nb);
914 	}
915 
916 asrc_fail:
917 	of_node_put(asrc_np);
918 	of_node_put(codec_np);
919 	put_device(&cpu_pdev->dev);
920 fail:
921 	of_node_put(cpu_np);
922 
923 	return ret;
924 }
925 
926 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
927 	{ .compatible = "fsl,imx-audio-ac97", },
928 	{ .compatible = "fsl,imx-audio-cs42888", },
929 	{ .compatible = "fsl,imx-audio-cs427x", },
930 	{ .compatible = "fsl,imx-audio-tlv320aic32x4", },
931 	{ .compatible = "fsl,imx-audio-tlv320aic31xx", },
932 	{ .compatible = "fsl,imx-audio-sgtl5000", },
933 	{ .compatible = "fsl,imx-audio-wm8962", },
934 	{ .compatible = "fsl,imx-audio-wm8960", },
935 	{ .compatible = "fsl,imx-audio-mqs", },
936 	{ .compatible = "fsl,imx-audio-wm8524", },
937 	{ .compatible = "fsl,imx-audio-si476x", },
938 	{ .compatible = "fsl,imx-audio-wm8958", },
939 	{ .compatible = "fsl,imx-audio-nau8822", },
940 	{}
941 };
942 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
943 
944 static struct platform_driver fsl_asoc_card_driver = {
945 	.probe = fsl_asoc_card_probe,
946 	.driver = {
947 		.name = DRIVER_NAME,
948 		.pm = &snd_soc_pm_ops,
949 		.of_match_table = fsl_asoc_card_dt_ids,
950 	},
951 };
952 module_platform_driver(fsl_asoc_card_driver);
953 
954 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
955 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
956 MODULE_ALIAS("platform:" DRIVER_NAME);
957 MODULE_LICENSE("GPL");
958