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Linux/sound/soc/samsung/speyside.c

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  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.h>
 11 #include <linux/module.h>
 12 
 13 #include "../codecs/wm8996.h"
 14 #include "../codecs/wm9081.h"
 15 
 16 #define WM8996_HPSEL_GPIO 214
 17 #define MCLK_AUDIO_RATE (512 * 48000)
 18 
 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].name);
 28         codec_dai = rtd->codec_dai;
 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 
 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].name);
 64         codec_dai = rtd->codec_dai;
 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 /* Default the headphone selection to active high */
109 static int speyside_jack_polarity;
110 
111 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
112                                 struct snd_soc_dapm_widget *sink)
113 {
114         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
115                 return 1;
116         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
117                 return 1;
118 
119         return 0;
120 }
121 
122 static void speyside_set_polarity(struct snd_soc_component *component,
123                                   int polarity)
124 {
125         speyside_jack_polarity = !polarity;
126         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
127 
128         /* Re-run DAPM to make sure we're using the correct mic bias */
129         snd_soc_dapm_sync(snd_soc_component_get_dapm(component));
130 }
131 
132 static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
133 {
134         struct snd_soc_dai *dai = rtd->codec_dai;
135         int ret;
136 
137         ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
138         if (ret < 0)
139                 return ret;
140 
141         return 0;
142 }
143 
144 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
145 {
146         struct snd_soc_dai *dai = rtd->codec_dai;
147         struct snd_soc_component *component = dai->component;
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         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
155         if (ret != 0)
156                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
157         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
158 
159         ret = snd_soc_card_jack_new(rtd->card, "Headset", SND_JACK_LINEOUT |
160                                     SND_JACK_HEADSET | SND_JACK_BTN_0,
161                                     &speyside_headset, speyside_headset_pins,
162                                     ARRAY_SIZE(speyside_headset_pins));
163         if (ret)
164                 return ret;
165 
166         wm8996_detect(component, &speyside_headset, speyside_set_polarity);
167 
168         return 0;
169 }
170 
171 static int speyside_late_probe(struct snd_soc_card *card)
172 {
173         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
174         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
175         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
176         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
177         snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
178         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
179         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
180 
181         return 0;
182 }
183 
184 static const struct snd_soc_pcm_stream dsp_codec_params = {
185         .formats = SNDRV_PCM_FMTBIT_S32_LE,
186         .rate_min = 48000,
187         .rate_max = 48000,
188         .channels_min = 2,
189         .channels_max = 2,
190 };
191 
192 SND_SOC_DAILINK_DEFS(cpu_dsp,
193         DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
194         DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
195         DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
196 
197 SND_SOC_DAILINK_DEFS(dsp_codec,
198         DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
199         DAILINK_COMP_ARRAY(COMP_CODEC("wm8996.1-001a", "wm8996-aif1")));
200 
201 SND_SOC_DAILINK_DEFS(baseband,
202         DAILINK_COMP_ARRAY(COMP_CPU("wm8996-aif2")),
203         DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
204 
205 static struct snd_soc_dai_link speyside_dai[] = {
206         {
207                 .name = "CPU-DSP",
208                 .stream_name = "CPU-DSP",
209                 .init = speyside_wm0010_init,
210                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
211                                 | SND_SOC_DAIFMT_CBM_CFM,
212                 SND_SOC_DAILINK_REG(cpu_dsp),
213         },
214         {
215                 .name = "DSP-CODEC",
216                 .stream_name = "DSP-CODEC",
217                 .init = speyside_wm8996_init,
218                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
219                                 | SND_SOC_DAIFMT_CBM_CFM,
220                 .params = &dsp_codec_params,
221                 .ignore_suspend = 1,
222                 SND_SOC_DAILINK_REG(dsp_codec),
223         },
224         {
225                 .name = "Baseband",
226                 .stream_name = "Baseband",
227                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
228                                 | SND_SOC_DAIFMT_CBM_CFM,
229                 .ignore_suspend = 1,
230                 SND_SOC_DAILINK_REG(baseband),
231         },
232 };
233 
234 static int speyside_wm9081_init(struct snd_soc_component *component)
235 {
236         /* At any time the WM9081 is active it will have this clock */
237         return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
238                                         MCLK_AUDIO_RATE, 0);
239 }
240 
241 static struct snd_soc_aux_dev speyside_aux_dev[] = {
242         {
243                 .name = "wm9081",
244                 .codec_name = "wm9081.1-006c",
245                 .init = speyside_wm9081_init,
246         },
247 };
248 
249 static struct snd_soc_codec_conf speyside_codec_conf[] = {
250         {
251                 .dev_name = "wm9081.1-006c",
252                 .name_prefix = "Sub",
253         },
254 };
255 
256 static const struct snd_kcontrol_new controls[] = {
257         SOC_DAPM_PIN_SWITCH("Main Speaker"),
258         SOC_DAPM_PIN_SWITCH("Main DMIC"),
259         SOC_DAPM_PIN_SWITCH("Main AMIC"),
260         SOC_DAPM_PIN_SWITCH("WM1250 Input"),
261         SOC_DAPM_PIN_SWITCH("WM1250 Output"),
262         SOC_DAPM_PIN_SWITCH("Headphone"),
263 };
264 
265 static struct snd_soc_dapm_widget widgets[] = {
266         SND_SOC_DAPM_HP("Headphone", NULL),
267         SND_SOC_DAPM_MIC("Headset Mic", NULL),
268 
269         SND_SOC_DAPM_SPK("Main Speaker", NULL),
270 
271         SND_SOC_DAPM_MIC("Main AMIC", NULL),
272         SND_SOC_DAPM_MIC("Main DMIC", NULL),
273 };
274 
275 static struct snd_soc_dapm_route audio_paths[] = {
276         { "IN1RN", NULL, "MICB1" },
277         { "IN1RP", NULL, "MICB1" },
278         { "IN1RN", NULL, "MICB2" },
279         { "IN1RP", NULL, "MICB2" },
280         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
281         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
282 
283         { "IN1LP", NULL, "MICB2" },
284         { "IN1RN", NULL, "MICB1" },
285         { "MICB2", NULL, "Main AMIC" },
286 
287         { "DMIC1DAT", NULL, "MICB1" },
288         { "DMIC2DAT", NULL, "MICB1" },
289         { "MICB1", NULL, "Main DMIC" },
290 
291         { "Headphone", NULL, "HPOUT1L" },
292         { "Headphone", NULL, "HPOUT1R" },
293 
294         { "Sub IN1", NULL, "HPOUT2L" },
295         { "Sub IN2", NULL, "HPOUT2R" },
296 
297         { "Main Speaker", NULL, "Sub SPKN" },
298         { "Main Speaker", NULL, "Sub SPKP" },
299         { "Main Speaker", NULL, "SPKDAT" },
300 };
301 
302 static struct snd_soc_card speyside = {
303         .name = "Speyside",
304         .owner = THIS_MODULE,
305         .dai_link = speyside_dai,
306         .num_links = ARRAY_SIZE(speyside_dai),
307         .aux_dev = speyside_aux_dev,
308         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
309         .codec_conf = speyside_codec_conf,
310         .num_configs = ARRAY_SIZE(speyside_codec_conf),
311 
312         .set_bias_level = speyside_set_bias_level,
313         .set_bias_level_post = speyside_set_bias_level_post,
314 
315         .controls = controls,
316         .num_controls = ARRAY_SIZE(controls),
317         .dapm_widgets = widgets,
318         .num_dapm_widgets = ARRAY_SIZE(widgets),
319         .dapm_routes = audio_paths,
320         .num_dapm_routes = ARRAY_SIZE(audio_paths),
321         .fully_routed = true,
322 
323         .late_probe = speyside_late_probe,
324 };
325 
326 static int speyside_probe(struct platform_device *pdev)
327 {
328         struct snd_soc_card *card = &speyside;
329         int ret;
330 
331         card->dev = &pdev->dev;
332 
333         ret = devm_snd_soc_register_card(&pdev->dev, card);
334         if (ret)
335                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
336                         ret);
337 
338         return ret;
339 }
340 
341 static struct platform_driver speyside_driver = {
342         .driver = {
343                 .name = "speyside",
344                 .pm = &snd_soc_pm_ops,
345         },
346         .probe = speyside_probe,
347 };
348 
349 module_platform_driver(speyside_driver);
350 
351 MODULE_DESCRIPTION("Speyside audio support");
352 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
353 MODULE_LICENSE("GPL");
354 MODULE_ALIAS("platform:speyside");
355 

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