1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Speyside audio support
4 //
5 // Copyright 2011 Wolfson Microelectronics
6
7 #include <sound/soc.h>
8 #include <sound/soc-dapm.h>
9 #include <sound/jack.h>
10 #include <linux/gpio/machine.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/module.h>
13
14 #include "../codecs/wm8996.h"
15 #include "../codecs/wm9081.h"
16
17 #define MCLK_AUDIO_RATE (512 * 48000)
18
speyside_set_bias_level(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)19 static int speyside_set_bias_level(struct snd_soc_card *card,
20 struct snd_soc_dapm_context *dapm,
21 enum snd_soc_bias_level level)
22 {
23 struct snd_soc_pcm_runtime *rtd;
24 struct snd_soc_dai *codec_dai;
25 int ret;
26
27 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
28 codec_dai = snd_soc_rtd_to_codec(rtd, 0);
29
30 if (dapm->dev != codec_dai->dev)
31 return 0;
32
33 switch (level) {
34 case SND_SOC_BIAS_STANDBY:
35 ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
36 32768, SND_SOC_CLOCK_IN);
37 if (ret < 0)
38 return ret;
39
40 ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
41 0, 0, 0);
42 if (ret < 0) {
43 pr_err("Failed to stop FLL\n");
44 return ret;
45 }
46 break;
47
48 default:
49 break;
50 }
51
52 return 0;
53 }
54
speyside_set_bias_level_post(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)55 static int speyside_set_bias_level_post(struct snd_soc_card *card,
56 struct snd_soc_dapm_context *dapm,
57 enum snd_soc_bias_level level)
58 {
59 struct snd_soc_pcm_runtime *rtd;
60 struct snd_soc_dai *codec_dai;
61 int ret;
62
63 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
64 codec_dai = snd_soc_rtd_to_codec(rtd, 0);
65
66 if (dapm->dev != codec_dai->dev)
67 return 0;
68
69 switch (level) {
70 case SND_SOC_BIAS_PREPARE:
71 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
72 ret = snd_soc_dai_set_pll(codec_dai, 0,
73 WM8996_FLL_MCLK2,
74 32768, MCLK_AUDIO_RATE);
75 if (ret < 0) {
76 pr_err("Failed to start FLL\n");
77 return ret;
78 }
79
80 ret = snd_soc_dai_set_sysclk(codec_dai,
81 WM8996_SYSCLK_FLL,
82 MCLK_AUDIO_RATE,
83 SND_SOC_CLOCK_IN);
84 if (ret < 0)
85 return ret;
86 }
87 break;
88
89 default:
90 break;
91 }
92
93 card->dapm.bias_level = level;
94
95 return 0;
96 }
97
98 static struct snd_soc_jack speyside_headset;
99
100 /* Headset jack detection DAPM pins */
101 static struct snd_soc_jack_pin speyside_headset_pins[] = {
102 {
103 .pin = "Headset Mic",
104 .mask = SND_JACK_MICROPHONE,
105 },
106 };
107
108 static struct gpio_desc *speyside_hpsel_gpio;
109 /* Default the headphone selection to active high */
110 static int speyside_jack_polarity;
111
speyside_get_micbias(struct snd_soc_dapm_widget * source,struct snd_soc_dapm_widget * sink)112 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
113 struct snd_soc_dapm_widget *sink)
114 {
115 if (speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB1") == 0))
116 return 1;
117 if (!speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB2") == 0))
118 return 1;
119
120 return 0;
121 }
122
speyside_set_polarity(struct snd_soc_component * component,int polarity)123 static void speyside_set_polarity(struct snd_soc_component *component,
124 int polarity)
125 {
126 speyside_jack_polarity = !polarity;
127 gpiod_direction_output(speyside_hpsel_gpio, speyside_jack_polarity);
128
129 /* Re-run DAPM to make sure we're using the correct mic bias */
130 snd_soc_dapm_sync(snd_soc_component_get_dapm(component));
131 }
132
speyside_wm0010_init(struct snd_soc_pcm_runtime * rtd)133 static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
134 {
135 struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
136 int ret;
137
138 ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
139 if (ret < 0)
140 return ret;
141
142 return 0;
143 }
144
speyside_wm8996_init(struct snd_soc_pcm_runtime * rtd)145 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
146 {
147 struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
148 struct snd_soc_component *component = dai->component;
149 enum gpiod_flags flags;
150 int ret;
151
152 ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
153 if (ret < 0)
154 return ret;
155
156 if (speyside_jack_polarity)
157 flags = GPIOD_OUT_HIGH;
158 else
159 flags = GPIOD_OUT_LOW;
160 speyside_hpsel_gpio = devm_gpiod_get(rtd->card->dev,
161 "hp-sel",
162 flags);
163 if (IS_ERR(speyside_hpsel_gpio))
164 return PTR_ERR(speyside_hpsel_gpio);
165
166 ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
167 SND_JACK_LINEOUT | SND_JACK_HEADSET |
168 SND_JACK_BTN_0,
169 &speyside_headset,
170 speyside_headset_pins,
171 ARRAY_SIZE(speyside_headset_pins));
172 if (ret)
173 return ret;
174
175 wm8996_detect(component, &speyside_headset, speyside_set_polarity);
176
177 return 0;
178 }
179
speyside_late_probe(struct snd_soc_card * card)180 static int speyside_late_probe(struct snd_soc_card *card)
181 {
182 snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
183 snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
184 snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
185 snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
186 snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
187 snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
188 snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
189
190 return 0;
191 }
192
193 static const struct snd_soc_pcm_stream dsp_codec_params = {
194 .formats = SNDRV_PCM_FMTBIT_S32_LE,
195 .rate_min = 48000,
196 .rate_max = 48000,
197 .channels_min = 2,
198 .channels_max = 2,
199 };
200
201 SND_SOC_DAILINK_DEFS(cpu_dsp,
202 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
203 DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
204 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
205
206 SND_SOC_DAILINK_DEFS(dsp_codec,
207 DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
208 DAILINK_COMP_ARRAY(COMP_CODEC("wm8996.1-001a", "wm8996-aif1")));
209
210 SND_SOC_DAILINK_DEFS(baseband,
211 DAILINK_COMP_ARRAY(COMP_CPU("wm8996-aif2")),
212 DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
213
214 static struct snd_soc_dai_link speyside_dai[] = {
215 {
216 .name = "CPU-DSP",
217 .stream_name = "CPU-DSP",
218 .init = speyside_wm0010_init,
219 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
220 | SND_SOC_DAIFMT_CBP_CFP,
221 SND_SOC_DAILINK_REG(cpu_dsp),
222 },
223 {
224 .name = "DSP-CODEC",
225 .stream_name = "DSP-CODEC",
226 .init = speyside_wm8996_init,
227 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
228 | SND_SOC_DAIFMT_CBP_CFP,
229 .c2c_params = &dsp_codec_params,
230 .num_c2c_params = 1,
231 .ignore_suspend = 1,
232 SND_SOC_DAILINK_REG(dsp_codec),
233 },
234 {
235 .name = "Baseband",
236 .stream_name = "Baseband",
237 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
238 | SND_SOC_DAIFMT_CBP_CFP,
239 .ignore_suspend = 1,
240 SND_SOC_DAILINK_REG(baseband),
241 },
242 };
243
speyside_wm9081_init(struct snd_soc_component * component)244 static int speyside_wm9081_init(struct snd_soc_component *component)
245 {
246 /* At any time the WM9081 is active it will have this clock */
247 return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
248 MCLK_AUDIO_RATE, 0);
249 }
250
251 static struct snd_soc_aux_dev speyside_aux_dev[] = {
252 {
253 .dlc = COMP_AUX("wm9081.1-006c"),
254 .init = speyside_wm9081_init,
255 },
256 };
257
258 static struct snd_soc_codec_conf speyside_codec_conf[] = {
259 {
260 .dlc = COMP_CODEC_CONF("wm9081.1-006c"),
261 .name_prefix = "Sub",
262 },
263 };
264
265 static const struct snd_kcontrol_new controls[] = {
266 SOC_DAPM_PIN_SWITCH("Main Speaker"),
267 SOC_DAPM_PIN_SWITCH("Main DMIC"),
268 SOC_DAPM_PIN_SWITCH("Main AMIC"),
269 SOC_DAPM_PIN_SWITCH("WM1250 Input"),
270 SOC_DAPM_PIN_SWITCH("WM1250 Output"),
271 SOC_DAPM_PIN_SWITCH("Headphone"),
272 };
273
274 static const struct snd_soc_dapm_widget widgets[] = {
275 SND_SOC_DAPM_HP("Headphone", NULL),
276 SND_SOC_DAPM_MIC("Headset Mic", NULL),
277
278 SND_SOC_DAPM_SPK("Main Speaker", NULL),
279
280 SND_SOC_DAPM_MIC("Main AMIC", NULL),
281 SND_SOC_DAPM_MIC("Main DMIC", NULL),
282 };
283
284 static const struct snd_soc_dapm_route audio_paths[] = {
285 { "IN1RN", NULL, "MICB1" },
286 { "IN1RP", NULL, "MICB1" },
287 { "IN1RN", NULL, "MICB2" },
288 { "IN1RP", NULL, "MICB2" },
289 { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
290 { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
291
292 { "IN1LP", NULL, "MICB2" },
293 { "IN1RN", NULL, "MICB1" },
294 { "MICB2", NULL, "Main AMIC" },
295
296 { "DMIC1DAT", NULL, "MICB1" },
297 { "DMIC2DAT", NULL, "MICB1" },
298 { "MICB1", NULL, "Main DMIC" },
299
300 { "Headphone", NULL, "HPOUT1L" },
301 { "Headphone", NULL, "HPOUT1R" },
302
303 { "Sub IN1", NULL, "HPOUT2L" },
304 { "Sub IN2", NULL, "HPOUT2R" },
305
306 { "Main Speaker", NULL, "Sub SPKN" },
307 { "Main Speaker", NULL, "Sub SPKP" },
308 { "Main Speaker", NULL, "SPKDAT" },
309 };
310
311 static struct snd_soc_card speyside = {
312 .name = "Speyside",
313 .owner = THIS_MODULE,
314 .dai_link = speyside_dai,
315 .num_links = ARRAY_SIZE(speyside_dai),
316 .aux_dev = speyside_aux_dev,
317 .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
318 .codec_conf = speyside_codec_conf,
319 .num_configs = ARRAY_SIZE(speyside_codec_conf),
320
321 .set_bias_level = speyside_set_bias_level,
322 .set_bias_level_post = speyside_set_bias_level_post,
323
324 .controls = controls,
325 .num_controls = ARRAY_SIZE(controls),
326 .dapm_widgets = widgets,
327 .num_dapm_widgets = ARRAY_SIZE(widgets),
328 .dapm_routes = audio_paths,
329 .num_dapm_routes = ARRAY_SIZE(audio_paths),
330 .fully_routed = true,
331
332 .late_probe = speyside_late_probe,
333 };
334
335 static struct gpiod_lookup_table wm8996_gpiod_table = {
336 /* Hardcoded device name in board file mach-crag6410.c */
337 .dev_id = "speyside",
338 .table = {
339 /*
340 * This line was hardcoded to 214 in the global GPIO
341 * number space, S3C GPIO macros seems top set the
342 * wm8996 codec GPIO start offset to 212, so this will
343 * be GPIO 214 - 212 = 2 on the wm8996.
344 */
345 GPIO_LOOKUP("wm8996", 2, "hp-sel", GPIO_ACTIVE_HIGH),
346 { },
347 },
348 };
349
speyside_gpiod_table_action(void * data)350 static void speyside_gpiod_table_action(void *data)
351 {
352 gpiod_remove_lookup_table(&wm8996_gpiod_table);
353 }
354
speyside_probe(struct platform_device * pdev)355 static int speyside_probe(struct platform_device *pdev)
356 {
357 struct snd_soc_card *card = &speyside;
358 int ret;
359
360 card->dev = &pdev->dev;
361
362 gpiod_add_lookup_table(&wm8996_gpiod_table);
363 ret = devm_add_action_or_reset(&pdev->dev, speyside_gpiod_table_action,
364 NULL);
365 if (ret)
366 return ret;
367
368 ret = devm_snd_soc_register_card(&pdev->dev, card);
369 if (ret)
370 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
371
372 return ret;
373 }
374
375 static struct platform_driver speyside_driver = {
376 .driver = {
377 .name = "speyside",
378 .pm = &snd_soc_pm_ops,
379 },
380 .probe = speyside_probe,
381 };
382
383 module_platform_driver(speyside_driver);
384
385 MODULE_DESCRIPTION("Speyside audio support");
386 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
387 MODULE_LICENSE("GPL");
388 MODULE_ALIAS("platform:speyside");
389