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1 /*
2  * Bells audio support
3  *
4  * Copyright 2012 Wolfson Microelectronics
5  *
6  * This program is free software; you can redistribute  it and/or modify it
7  * under  the terms of  the GNU General  Public License as published by the
8  * Free Software Foundation;  either version 2 of the  License, or (at your
9  * option) any later version.
10  */
11 
12 #include <sound/soc.h>
13 #include <sound/soc-dapm.h>
14 #include <sound/jack.h>
15 #include <linux/gpio.h>
16 #include <linux/module.h>
17 
18 #include "../codecs/wm5102.h"
19 #include "../codecs/wm9081.h"
20 
21 /* BCLK2 is fixed at this currently */
22 #define BCLK2_RATE (64 * 8000)
23 
24 /*
25  * Expect a 24.576MHz crystal if one is fitted (the driver will function
26  * if this is not fitted).
27  */
28 #define MCLK_RATE 24576000
29 
30 #define SYS_AUDIO_RATE 44100
31 #define SYS_MCLK_RATE  (SYS_AUDIO_RATE * 512)
32 
33 #define DAI_AP_DSP    0
34 #define DAI_DSP_CODEC 1
35 #define DAI_CODEC_CP  2
36 #define DAI_CODEC_SUB 3
37 
38 struct bells_drvdata {
39 	int sysclk_rate;
40 	int asyncclk_rate;
41 };
42 
43 static struct bells_drvdata wm2200_drvdata = {
44 	.sysclk_rate = 22579200,
45 };
46 
47 static struct bells_drvdata wm5102_drvdata = {
48 	.sysclk_rate = 45158400,
49 	.asyncclk_rate = 49152000,
50 };
51 
52 static struct bells_drvdata wm5110_drvdata = {
53 	.sysclk_rate = 135475200,
54 	.asyncclk_rate = 147456000,
55 };
56 
bells_set_bias_level(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)57 static int bells_set_bias_level(struct snd_soc_card *card,
58 				struct snd_soc_dapm_context *dapm,
59 				enum snd_soc_bias_level level)
60 {
61 	struct snd_soc_dai *codec_dai = card->rtd[DAI_DSP_CODEC].codec_dai;
62 	struct snd_soc_codec *codec = codec_dai->codec;
63 	struct bells_drvdata *bells = card->drvdata;
64 	int ret;
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_codec_set_pll(codec, 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_codec_set_pll(codec, 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_dai *codec_dai = card->rtd[DAI_DSP_CODEC].codec_dai;
103 	struct snd_soc_codec *codec = codec_dai->codec;
104 	struct bells_drvdata *bells = card->drvdata;
105 	int ret;
106 
107 	if (dapm->dev != codec_dai->dev)
108 		return 0;
109 
110 	switch (level) {
111 	case SND_SOC_BIAS_STANDBY:
112 		ret = snd_soc_codec_set_pll(codec, WM5102_FLL1, 0, 0, 0);
113 		if (ret < 0) {
114 			pr_err("Failed to stop FLL: %d\n", ret);
115 			return ret;
116 		}
117 
118 		if (bells->asyncclk_rate) {
119 			ret = snd_soc_codec_set_pll(codec, WM5102_FLL2,
120 						    0, 0, 0);
121 			if (ret < 0) {
122 				pr_err("Failed to stop FLL: %d\n", ret);
123 				return ret;
124 			}
125 		}
126 		break;
127 
128 	default:
129 		break;
130 	}
131 
132 	dapm->bias_level = level;
133 
134 	return 0;
135 }
136 
bells_late_probe(struct snd_soc_card * card)137 static int bells_late_probe(struct snd_soc_card *card)
138 {
139 	struct bells_drvdata *bells = card->drvdata;
140 	struct snd_soc_codec *wm0010 = card->rtd[DAI_AP_DSP].codec;
141 	struct snd_soc_codec *codec = card->rtd[DAI_DSP_CODEC].codec;
142 	struct snd_soc_dai *aif1_dai = card->rtd[DAI_DSP_CODEC].codec_dai;
143 	struct snd_soc_dai *aif2_dai;
144 	struct snd_soc_dai *aif3_dai;
145 	struct snd_soc_dai *wm9081_dai;
146 	int ret;
147 
148 	ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_SYSCLK,
149 				       ARIZONA_CLK_SRC_FLL1,
150 				       bells->sysclk_rate,
151 				       SND_SOC_CLOCK_IN);
152 	if (ret != 0) {
153 		dev_err(codec->dev, "Failed to set SYSCLK: %d\n", ret);
154 		return ret;
155 	}
156 
157 	ret = snd_soc_codec_set_sysclk(wm0010, 0, 0, SYS_MCLK_RATE, 0);
158 	if (ret != 0) {
159 		dev_err(wm0010->dev, "Failed to set WM0010 clock: %d\n", ret);
160 		return ret;
161 	}
162 
163 	ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
164 	if (ret != 0)
165 		dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
166 
167 	ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_OPCLK, 0,
168 				       SYS_MCLK_RATE, SND_SOC_CLOCK_OUT);
169 	if (ret != 0)
170 		dev_err(codec->dev, "Failed to set OPCLK: %d\n", ret);
171 
172 	if (card->num_rtd == DAI_CODEC_CP)
173 		return 0;
174 
175 	ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_ASYNCCLK,
176 				       ARIZONA_CLK_SRC_FLL2,
177 				       bells->asyncclk_rate,
178 				       SND_SOC_CLOCK_IN);
179 	if (ret != 0) {
180 		dev_err(codec->dev, "Failed to set ASYNCCLK: %d\n", ret);
181 		return ret;
182 	}
183 
184 	aif2_dai = card->rtd[DAI_CODEC_CP].cpu_dai;
185 
186 	ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
187 	if (ret != 0) {
188 		dev_err(aif2_dai->dev, "Failed to set AIF2 clock: %d\n", ret);
189 		return ret;
190 	}
191 
192 	if (card->num_rtd == DAI_CODEC_SUB)
193 		return 0;
194 
195 	aif3_dai = card->rtd[DAI_CODEC_SUB].cpu_dai;
196 	wm9081_dai = card->rtd[DAI_CODEC_SUB].codec_dai;
197 
198 	ret = snd_soc_dai_set_sysclk(aif3_dai, ARIZONA_CLK_SYSCLK, 0, 0);
199 	if (ret != 0) {
200 		dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
201 		return ret;
202 	}
203 
204 	ret = snd_soc_codec_set_sysclk(wm9081_dai->codec, WM9081_SYSCLK_MCLK,
205 				       0, SYS_MCLK_RATE, 0);
206 	if (ret != 0) {
207 		dev_err(wm9081_dai->dev, "Failed to set MCLK: %d\n", ret);
208 		return ret;
209 	}
210 
211 	return 0;
212 }
213 
214 static const struct snd_soc_pcm_stream baseband_params = {
215 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
216 	.rate_min = 8000,
217 	.rate_max = 8000,
218 	.channels_min = 2,
219 	.channels_max = 2,
220 };
221 
222 static const struct snd_soc_pcm_stream sub_params = {
223 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
224 	.rate_min = SYS_AUDIO_RATE,
225 	.rate_max = SYS_AUDIO_RATE,
226 	.channels_min = 2,
227 	.channels_max = 2,
228 };
229 
230 static struct snd_soc_dai_link bells_dai_wm2200[] = {
231 	{
232 		.name = "CPU-DSP",
233 		.stream_name = "CPU-DSP",
234 		.cpu_dai_name = "samsung-i2s.0",
235 		.codec_dai_name = "wm0010-sdi1",
236 		.platform_name = "samsung-i2s.0",
237 		.codec_name = "spi0.0",
238 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
239 				| SND_SOC_DAIFMT_CBM_CFM,
240 	},
241 	{
242 		.name = "DSP-CODEC",
243 		.stream_name = "DSP-CODEC",
244 		.cpu_dai_name = "wm0010-sdi2",
245 		.codec_dai_name = "wm2200",
246 		.codec_name = "wm2200.1-003a",
247 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
248 				| SND_SOC_DAIFMT_CBM_CFM,
249 		.params = &sub_params,
250 		.ignore_suspend = 1,
251 	},
252 };
253 
254 static struct snd_soc_dai_link bells_dai_wm5102[] = {
255 	{
256 		.name = "CPU-DSP",
257 		.stream_name = "CPU-DSP",
258 		.cpu_dai_name = "samsung-i2s.0",
259 		.codec_dai_name = "wm0010-sdi1",
260 		.platform_name = "samsung-i2s.0",
261 		.codec_name = "spi0.0",
262 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
263 				| SND_SOC_DAIFMT_CBM_CFM,
264 	},
265 	{
266 		.name = "DSP-CODEC",
267 		.stream_name = "DSP-CODEC",
268 		.cpu_dai_name = "wm0010-sdi2",
269 		.codec_dai_name = "wm5102-aif1",
270 		.codec_name = "wm5102-codec",
271 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
272 				| SND_SOC_DAIFMT_CBM_CFM,
273 		.params = &sub_params,
274 		.ignore_suspend = 1,
275 	},
276 	{
277 		.name = "Baseband",
278 		.stream_name = "Baseband",
279 		.cpu_dai_name = "wm5102-aif2",
280 		.codec_dai_name = "wm1250-ev1",
281 		.codec_name = "wm1250-ev1.1-0027",
282 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
283 				| SND_SOC_DAIFMT_CBM_CFM,
284 		.ignore_suspend = 1,
285 		.params = &baseband_params,
286 	},
287 	{
288 		.name = "Sub",
289 		.stream_name = "Sub",
290 		.cpu_dai_name = "wm5102-aif3",
291 		.codec_dai_name = "wm9081-hifi",
292 		.codec_name = "wm9081.1-006c",
293 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
294 				| SND_SOC_DAIFMT_CBS_CFS,
295 		.ignore_suspend = 1,
296 		.params = &sub_params,
297 	},
298 };
299 
300 static struct snd_soc_dai_link bells_dai_wm5110[] = {
301 	{
302 		.name = "CPU-DSP",
303 		.stream_name = "CPU-DSP",
304 		.cpu_dai_name = "samsung-i2s.0",
305 		.codec_dai_name = "wm0010-sdi1",
306 		.platform_name = "samsung-i2s.0",
307 		.codec_name = "spi0.0",
308 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
309 				| SND_SOC_DAIFMT_CBM_CFM,
310 	},
311 	{
312 		.name = "DSP-CODEC",
313 		.stream_name = "DSP-CODEC",
314 		.cpu_dai_name = "wm0010-sdi2",
315 		.codec_dai_name = "wm5110-aif1",
316 		.codec_name = "wm5110-codec",
317 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
318 				| SND_SOC_DAIFMT_CBM_CFM,
319 		.params = &sub_params,
320 		.ignore_suspend = 1,
321 	},
322 	{
323 		.name = "Baseband",
324 		.stream_name = "Baseband",
325 		.cpu_dai_name = "wm5110-aif2",
326 		.codec_dai_name = "wm1250-ev1",
327 		.codec_name = "wm1250-ev1.1-0027",
328 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
329 				| SND_SOC_DAIFMT_CBM_CFM,
330 		.ignore_suspend = 1,
331 		.params = &baseband_params,
332 	},
333 	{
334 		.name = "Sub",
335 		.stream_name = "Sub",
336 		.cpu_dai_name = "wm5110-aif3",
337 		.codec_dai_name = "wm9081-hifi",
338 		.codec_name = "wm9081.1-006c",
339 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
340 				| SND_SOC_DAIFMT_CBS_CFS,
341 		.ignore_suspend = 1,
342 		.params = &sub_params,
343 	},
344 };
345 
346 static struct snd_soc_codec_conf bells_codec_conf[] = {
347 	{
348 		.dev_name = "wm9081.1-006c",
349 		.name_prefix = "Sub",
350 	},
351 };
352 
353 static struct snd_soc_dapm_route bells_routes[] = {
354 	{ "Sub CLK_SYS", NULL, "OPCLK" },
355 };
356 
357 static struct snd_soc_card bells_cards[] = {
358 	{
359 		.name = "Bells WM2200",
360 		.owner = THIS_MODULE,
361 		.dai_link = bells_dai_wm2200,
362 		.num_links = ARRAY_SIZE(bells_dai_wm2200),
363 		.codec_conf = bells_codec_conf,
364 		.num_configs = ARRAY_SIZE(bells_codec_conf),
365 
366 		.late_probe = bells_late_probe,
367 
368 		.dapm_routes = bells_routes,
369 		.num_dapm_routes = ARRAY_SIZE(bells_routes),
370 
371 		.set_bias_level = bells_set_bias_level,
372 		.set_bias_level_post = bells_set_bias_level_post,
373 
374 		.drvdata = &wm2200_drvdata,
375 	},
376 	{
377 		.name = "Bells WM5102",
378 		.owner = THIS_MODULE,
379 		.dai_link = bells_dai_wm5102,
380 		.num_links = ARRAY_SIZE(bells_dai_wm5102),
381 		.codec_conf = bells_codec_conf,
382 		.num_configs = ARRAY_SIZE(bells_codec_conf),
383 
384 		.late_probe = bells_late_probe,
385 
386 		.dapm_routes = bells_routes,
387 		.num_dapm_routes = ARRAY_SIZE(bells_routes),
388 
389 		.set_bias_level = bells_set_bias_level,
390 		.set_bias_level_post = bells_set_bias_level_post,
391 
392 		.drvdata = &wm5102_drvdata,
393 	},
394 	{
395 		.name = "Bells WM5110",
396 		.owner = THIS_MODULE,
397 		.dai_link = bells_dai_wm5110,
398 		.num_links = ARRAY_SIZE(bells_dai_wm5110),
399 		.codec_conf = bells_codec_conf,
400 		.num_configs = ARRAY_SIZE(bells_codec_conf),
401 
402 		.late_probe = bells_late_probe,
403 
404 		.dapm_routes = bells_routes,
405 		.num_dapm_routes = ARRAY_SIZE(bells_routes),
406 
407 		.set_bias_level = bells_set_bias_level,
408 		.set_bias_level_post = bells_set_bias_level_post,
409 
410 		.drvdata = &wm5110_drvdata,
411 	},
412 };
413 
414 
bells_probe(struct platform_device * pdev)415 static int bells_probe(struct platform_device *pdev)
416 {
417 	int ret;
418 
419 	bells_cards[pdev->id].dev = &pdev->dev;
420 
421 	ret = snd_soc_register_card(&bells_cards[pdev->id]);
422 	if (ret) {
423 		dev_err(&pdev->dev,
424 			"snd_soc_register_card(%s) failed: %d\n",
425 			bells_cards[pdev->id].name, ret);
426 		return ret;
427 	}
428 
429 	return 0;
430 }
431 
bells_remove(struct platform_device * pdev)432 static int bells_remove(struct platform_device *pdev)
433 {
434 	snd_soc_unregister_card(&bells_cards[pdev->id]);
435 
436 	return 0;
437 }
438 
439 static struct platform_driver bells_driver = {
440 	.driver = {
441 		.name = "bells",
442 		.owner = THIS_MODULE,
443 		.pm = &snd_soc_pm_ops,
444 	},
445 	.probe = bells_probe,
446 	.remove = bells_remove,
447 };
448 
449 module_platform_driver(bells_driver);
450 
451 MODULE_DESCRIPTION("Bells audio support");
452 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
453 MODULE_LICENSE("GPL");
454 MODULE_ALIAS("platform:bells");
455