1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Bells audio support
4 //
5 // Copyright 2012 Wolfson Microelectronics
6 
7 #include <sound/soc.h>
8 #include <sound/soc-dapm.h>
9 #include <sound/jack.h>
10 #include <linux/gpio.h>
11 #include <linux/module.h>
12 
13 #include "../codecs/wm5102.h"
14 #include "../codecs/wm9081.h"
15 
16 /* BCLK2 is fixed at this currently */
17 #define BCLK2_RATE (64 * 8000)
18 
19 /*
20  * Expect a 24.576MHz crystal if one is fitted (the driver will function
21  * if this is not fitted).
22  */
23 #define MCLK_RATE 24576000
24 
25 #define SYS_AUDIO_RATE 44100
26 #define SYS_MCLK_RATE  (SYS_AUDIO_RATE * 512)
27 
28 #define DAI_AP_DSP    0
29 #define DAI_DSP_CODEC 1
30 #define DAI_CODEC_CP  2
31 #define DAI_CODEC_SUB 3
32 
33 struct bells_drvdata {
34 	int sysclk_rate;
35 	int asyncclk_rate;
36 };
37 
38 static struct bells_drvdata wm2200_drvdata = {
39 	.sysclk_rate = 22579200,
40 };
41 
42 static struct bells_drvdata wm5102_drvdata = {
43 	.sysclk_rate = 45158400,
44 	.asyncclk_rate = 49152000,
45 };
46 
47 static struct bells_drvdata wm5110_drvdata = {
48 	.sysclk_rate = 135475200,
49 	.asyncclk_rate = 147456000,
50 };
51 
bells_set_bias_level(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)52 static int bells_set_bias_level(struct snd_soc_card *card,
53 				struct snd_soc_dapm_context *dapm,
54 				enum snd_soc_bias_level level)
55 {
56 	struct snd_soc_pcm_runtime *rtd;
57 	struct snd_soc_dai *codec_dai;
58 	struct snd_soc_component *component;
59 	struct bells_drvdata *bells = card->drvdata;
60 	int ret;
61 
62 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_DSP_CODEC]);
63 	codec_dai = asoc_rtd_to_codec(rtd, 0);
64 	component = codec_dai->component;
65 
66 	if (dapm->dev != codec_dai->dev)
67 		return 0;
68 
69 	switch (level) {
70 	case SND_SOC_BIAS_PREPARE:
71 		if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
72 			break;
73 
74 		ret = snd_soc_component_set_pll(component, WM5102_FLL1,
75 					    ARIZONA_FLL_SRC_MCLK1,
76 					    MCLK_RATE,
77 					    bells->sysclk_rate);
78 		if (ret < 0)
79 			pr_err("Failed to start FLL: %d\n", ret);
80 
81 		if (bells->asyncclk_rate) {
82 			ret = snd_soc_component_set_pll(component, WM5102_FLL2,
83 						    ARIZONA_FLL_SRC_AIF2BCLK,
84 						    BCLK2_RATE,
85 						    bells->asyncclk_rate);
86 			if (ret < 0)
87 				pr_err("Failed to start FLL: %d\n", ret);
88 		}
89 		break;
90 
91 	default:
92 		break;
93 	}
94 
95 	return 0;
96 }
97 
bells_set_bias_level_post(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)98 static int bells_set_bias_level_post(struct snd_soc_card *card,
99 				     struct snd_soc_dapm_context *dapm,
100 				     enum snd_soc_bias_level level)
101 {
102 	struct snd_soc_pcm_runtime *rtd;
103 	struct snd_soc_dai *codec_dai;
104 	struct snd_soc_component *component;
105 	struct bells_drvdata *bells = card->drvdata;
106 	int ret;
107 
108 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_DSP_CODEC]);
109 	codec_dai = asoc_rtd_to_codec(rtd, 0);
110 	component = codec_dai->component;
111 
112 	if (dapm->dev != codec_dai->dev)
113 		return 0;
114 
115 	switch (level) {
116 	case SND_SOC_BIAS_STANDBY:
117 		ret = snd_soc_component_set_pll(component, WM5102_FLL1, 0, 0, 0);
118 		if (ret < 0) {
119 			pr_err("Failed to stop FLL: %d\n", ret);
120 			return ret;
121 		}
122 
123 		if (bells->asyncclk_rate) {
124 			ret = snd_soc_component_set_pll(component, WM5102_FLL2,
125 						    0, 0, 0);
126 			if (ret < 0) {
127 				pr_err("Failed to stop FLL: %d\n", ret);
128 				return ret;
129 			}
130 		}
131 		break;
132 
133 	default:
134 		break;
135 	}
136 
137 	dapm->bias_level = level;
138 
139 	return 0;
140 }
141 
bells_late_probe(struct snd_soc_card * card)142 static int bells_late_probe(struct snd_soc_card *card)
143 {
144 	struct bells_drvdata *bells = card->drvdata;
145 	struct snd_soc_pcm_runtime *rtd;
146 	struct snd_soc_component *wm0010;
147 	struct snd_soc_component *component;
148 	struct snd_soc_dai *aif1_dai;
149 	struct snd_soc_dai *aif2_dai;
150 	struct snd_soc_dai *aif3_dai;
151 	struct snd_soc_dai *wm9081_dai;
152 	int ret;
153 
154 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_AP_DSP]);
155 	wm0010 = asoc_rtd_to_codec(rtd, 0)->component;
156 
157 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_DSP_CODEC]);
158 	component = asoc_rtd_to_codec(rtd, 0)->component;
159 	aif1_dai = asoc_rtd_to_codec(rtd, 0);
160 
161 	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
162 				       ARIZONA_CLK_SRC_FLL1,
163 				       bells->sysclk_rate,
164 				       SND_SOC_CLOCK_IN);
165 	if (ret != 0) {
166 		dev_err(component->dev, "Failed to set SYSCLK: %d\n", ret);
167 		return ret;
168 	}
169 
170 	ret = snd_soc_component_set_sysclk(wm0010, 0, 0, SYS_MCLK_RATE, 0);
171 	if (ret != 0) {
172 		dev_err(wm0010->dev, "Failed to set WM0010 clock: %d\n", ret);
173 		return ret;
174 	}
175 
176 	ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
177 	if (ret != 0)
178 		dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
179 
180 	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_OPCLK, 0,
181 				       SYS_MCLK_RATE, SND_SOC_CLOCK_OUT);
182 	if (ret != 0)
183 		dev_err(component->dev, "Failed to set OPCLK: %d\n", ret);
184 
185 	if (card->num_rtd == DAI_CODEC_CP)
186 		return 0;
187 
188 	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_ASYNCCLK,
189 				       ARIZONA_CLK_SRC_FLL2,
190 				       bells->asyncclk_rate,
191 				       SND_SOC_CLOCK_IN);
192 	if (ret != 0) {
193 		dev_err(component->dev, "Failed to set ASYNCCLK: %d\n", ret);
194 		return ret;
195 	}
196 
197 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_CODEC_CP]);
198 	aif2_dai = asoc_rtd_to_cpu(rtd, 0);
199 
200 	ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
201 	if (ret != 0) {
202 		dev_err(aif2_dai->dev, "Failed to set AIF2 clock: %d\n", ret);
203 		return ret;
204 	}
205 
206 	if (card->num_rtd == DAI_CODEC_SUB)
207 		return 0;
208 
209 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_CODEC_SUB]);
210 	aif3_dai = asoc_rtd_to_cpu(rtd, 0);
211 	wm9081_dai = asoc_rtd_to_codec(rtd, 0);
212 
213 	ret = snd_soc_dai_set_sysclk(aif3_dai, ARIZONA_CLK_SYSCLK, 0, 0);
214 	if (ret != 0) {
215 		dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
216 		return ret;
217 	}
218 
219 	ret = snd_soc_component_set_sysclk(wm9081_dai->component, WM9081_SYSCLK_MCLK,
220 				       0, SYS_MCLK_RATE, 0);
221 	if (ret != 0) {
222 		dev_err(wm9081_dai->dev, "Failed to set MCLK: %d\n", ret);
223 		return ret;
224 	}
225 
226 	return 0;
227 }
228 
229 static const struct snd_soc_pcm_stream baseband_params = {
230 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
231 	.rate_min = 8000,
232 	.rate_max = 8000,
233 	.channels_min = 2,
234 	.channels_max = 2,
235 };
236 
237 static const struct snd_soc_pcm_stream sub_params = {
238 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
239 	.rate_min = SYS_AUDIO_RATE,
240 	.rate_max = SYS_AUDIO_RATE,
241 	.channels_min = 2,
242 	.channels_max = 2,
243 };
244 
245 SND_SOC_DAILINK_DEFS(wm2200_cpu_dsp,
246 	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
247 	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
248 	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
249 
250 SND_SOC_DAILINK_DEFS(wm2200_dsp_codec,
251 	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
252 	DAILINK_COMP_ARRAY(COMP_CODEC("wm2200.1-003a", "wm2200")));
253 
254 static struct snd_soc_dai_link bells_dai_wm2200[] = {
255 	{
256 		.name = "CPU-DSP",
257 		.stream_name = "CPU-DSP",
258 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
259 				| SND_SOC_DAIFMT_CBM_CFM,
260 		SND_SOC_DAILINK_REG(wm2200_cpu_dsp),
261 	},
262 	{
263 		.name = "DSP-CODEC",
264 		.stream_name = "DSP-CODEC",
265 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
266 				| SND_SOC_DAIFMT_CBM_CFM,
267 		.params = &sub_params,
268 		.ignore_suspend = 1,
269 		SND_SOC_DAILINK_REG(wm2200_dsp_codec),
270 	},
271 };
272 
273 SND_SOC_DAILINK_DEFS(wm5102_cpu_dsp,
274 	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
275 	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
276 	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
277 
278 SND_SOC_DAILINK_DEFS(wm5102_dsp_codec,
279 	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
280 	DAILINK_COMP_ARRAY(COMP_CODEC("wm5102-codec", "wm5102-aif1")));
281 
282 SND_SOC_DAILINK_DEFS(wm5102_baseband,
283 	DAILINK_COMP_ARRAY(COMP_CPU("wm5102-aif2")),
284 	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
285 
286 SND_SOC_DAILINK_DEFS(wm5102_sub,
287 	DAILINK_COMP_ARRAY(COMP_CPU("wm5102-aif3")),
288 	DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));
289 
290 static struct snd_soc_dai_link bells_dai_wm5102[] = {
291 	{
292 		.name = "CPU-DSP",
293 		.stream_name = "CPU-DSP",
294 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
295 				| SND_SOC_DAIFMT_CBM_CFM,
296 		SND_SOC_DAILINK_REG(wm5102_cpu_dsp),
297 	},
298 	{
299 		.name = "DSP-CODEC",
300 		.stream_name = "DSP-CODEC",
301 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
302 				| SND_SOC_DAIFMT_CBM_CFM,
303 		.params = &sub_params,
304 		.ignore_suspend = 1,
305 		SND_SOC_DAILINK_REG(wm5102_dsp_codec),
306 	},
307 	{
308 		.name = "Baseband",
309 		.stream_name = "Baseband",
310 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
311 				| SND_SOC_DAIFMT_CBM_CFM,
312 		.ignore_suspend = 1,
313 		.params = &baseband_params,
314 		SND_SOC_DAILINK_REG(wm5102_baseband),
315 	},
316 	{
317 		.name = "Sub",
318 		.stream_name = "Sub",
319 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
320 				| SND_SOC_DAIFMT_CBS_CFS,
321 		.ignore_suspend = 1,
322 		.params = &sub_params,
323 		SND_SOC_DAILINK_REG(wm5102_sub),
324 	},
325 };
326 
327 SND_SOC_DAILINK_DEFS(wm5110_cpu_dsp,
328 	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
329 	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
330 	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
331 
332 SND_SOC_DAILINK_DEFS(wm5110_dsp_codec,
333 	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
334 	DAILINK_COMP_ARRAY(COMP_CODEC("wm5110-codec", "wm5110-aif1")));
335 
336 SND_SOC_DAILINK_DEFS(wm5110_baseband,
337 	DAILINK_COMP_ARRAY(COMP_CPU("wm5110-aif2")),
338 	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
339 
340 
341 SND_SOC_DAILINK_DEFS(wm5110_sub,
342 	DAILINK_COMP_ARRAY(COMP_CPU("wm5110-aif3")),
343 	DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));
344 
345 static struct snd_soc_dai_link bells_dai_wm5110[] = {
346 	{
347 		.name = "CPU-DSP",
348 		.stream_name = "CPU-DSP",
349 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
350 				| SND_SOC_DAIFMT_CBM_CFM,
351 		SND_SOC_DAILINK_REG(wm5110_cpu_dsp),
352 	},
353 	{
354 		.name = "DSP-CODEC",
355 		.stream_name = "DSP-CODEC",
356 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
357 				| SND_SOC_DAIFMT_CBM_CFM,
358 		.params = &sub_params,
359 		.ignore_suspend = 1,
360 		SND_SOC_DAILINK_REG(wm5110_dsp_codec),
361 	},
362 	{
363 		.name = "Baseband",
364 		.stream_name = "Baseband",
365 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
366 				| SND_SOC_DAIFMT_CBM_CFM,
367 		.ignore_suspend = 1,
368 		.params = &baseband_params,
369 		SND_SOC_DAILINK_REG(wm5110_baseband),
370 	},
371 	{
372 		.name = "Sub",
373 		.stream_name = "Sub",
374 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
375 				| SND_SOC_DAIFMT_CBS_CFS,
376 		.ignore_suspend = 1,
377 		.params = &sub_params,
378 		SND_SOC_DAILINK_REG(wm5110_sub),
379 	},
380 };
381 
382 static struct snd_soc_codec_conf bells_codec_conf[] = {
383 	{
384 		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
385 		.name_prefix = "Sub",
386 	},
387 };
388 
389 static const struct snd_soc_dapm_widget bells_widgets[] = {
390 	SND_SOC_DAPM_MIC("DMIC", NULL),
391 };
392 
393 static const struct snd_soc_dapm_route bells_routes[] = {
394 	{ "Sub CLK_SYS", NULL, "OPCLK" },
395 	{ "CLKIN", NULL, "OPCLK" },
396 
397 	{ "DMIC", NULL, "MICBIAS2" },
398 	{ "IN2L", NULL, "DMIC" },
399 	{ "IN2R", NULL, "DMIC" },
400 };
401 
402 static struct snd_soc_card bells_cards[] = {
403 	{
404 		.name = "Bells WM2200",
405 		.owner = THIS_MODULE,
406 		.dai_link = bells_dai_wm2200,
407 		.num_links = ARRAY_SIZE(bells_dai_wm2200),
408 		.codec_conf = bells_codec_conf,
409 		.num_configs = ARRAY_SIZE(bells_codec_conf),
410 
411 		.late_probe = bells_late_probe,
412 
413 		.dapm_widgets = bells_widgets,
414 		.num_dapm_widgets = ARRAY_SIZE(bells_widgets),
415 		.dapm_routes = bells_routes,
416 		.num_dapm_routes = ARRAY_SIZE(bells_routes),
417 
418 		.set_bias_level = bells_set_bias_level,
419 		.set_bias_level_post = bells_set_bias_level_post,
420 
421 		.drvdata = &wm2200_drvdata,
422 	},
423 	{
424 		.name = "Bells WM5102",
425 		.owner = THIS_MODULE,
426 		.dai_link = bells_dai_wm5102,
427 		.num_links = ARRAY_SIZE(bells_dai_wm5102),
428 		.codec_conf = bells_codec_conf,
429 		.num_configs = ARRAY_SIZE(bells_codec_conf),
430 
431 		.late_probe = bells_late_probe,
432 
433 		.dapm_widgets = bells_widgets,
434 		.num_dapm_widgets = ARRAY_SIZE(bells_widgets),
435 		.dapm_routes = bells_routes,
436 		.num_dapm_routes = ARRAY_SIZE(bells_routes),
437 
438 		.set_bias_level = bells_set_bias_level,
439 		.set_bias_level_post = bells_set_bias_level_post,
440 
441 		.drvdata = &wm5102_drvdata,
442 	},
443 	{
444 		.name = "Bells WM5110",
445 		.owner = THIS_MODULE,
446 		.dai_link = bells_dai_wm5110,
447 		.num_links = ARRAY_SIZE(bells_dai_wm5110),
448 		.codec_conf = bells_codec_conf,
449 		.num_configs = ARRAY_SIZE(bells_codec_conf),
450 
451 		.late_probe = bells_late_probe,
452 
453 		.dapm_widgets = bells_widgets,
454 		.num_dapm_widgets = ARRAY_SIZE(bells_widgets),
455 		.dapm_routes = bells_routes,
456 		.num_dapm_routes = ARRAY_SIZE(bells_routes),
457 
458 		.set_bias_level = bells_set_bias_level,
459 		.set_bias_level_post = bells_set_bias_level_post,
460 
461 		.drvdata = &wm5110_drvdata,
462 	},
463 };
464 
bells_probe(struct platform_device * pdev)465 static int bells_probe(struct platform_device *pdev)
466 {
467 	int ret;
468 
469 	bells_cards[pdev->id].dev = &pdev->dev;
470 
471 	ret = devm_snd_soc_register_card(&pdev->dev, &bells_cards[pdev->id]);
472 	if (ret)
473 		dev_err(&pdev->dev,
474 			"snd_soc_register_card(%s) failed: %d\n",
475 			bells_cards[pdev->id].name, ret);
476 
477 	return ret;
478 }
479 
480 static struct platform_driver bells_driver = {
481 	.driver = {
482 		.name = "bells",
483 		.pm = &snd_soc_pm_ops,
484 	},
485 	.probe = bells_probe,
486 };
487 
488 module_platform_driver(bells_driver);
489 
490 MODULE_DESCRIPTION("Bells audio support");
491 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
492 MODULE_LICENSE("GPL");
493 MODULE_ALIAS("platform:bells");
494