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