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Linux/sound/soc/samsung/speyside.c

  1 /*
  2  * Speyside audio support
  3  *
  4  * Copyright 2011 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/wm8996.h"
 19 #include "../codecs/wm9081.h"
 20 
 21 #define WM8996_HPSEL_GPIO 214
 22 #define MCLK_AUDIO_RATE (512 * 48000)
 23 
 24 static int speyside_set_bias_level(struct snd_soc_card *card,
 25                                    struct snd_soc_dapm_context *dapm,
 26                                    enum snd_soc_bias_level level)
 27 {
 28         struct snd_soc_pcm_runtime *rtd;
 29         struct snd_soc_dai *codec_dai;
 30         int ret;
 31 
 32         rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
 33         codec_dai = rtd->codec_dai;
 34 
 35         if (dapm->dev != codec_dai->dev)
 36                 return 0;
 37 
 38         switch (level) {
 39         case SND_SOC_BIAS_STANDBY:
 40                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
 41                                              32768, SND_SOC_CLOCK_IN);
 42                 if (ret < 0)
 43                         return ret;
 44 
 45                 ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
 46                                           0, 0, 0);
 47                 if (ret < 0) {
 48                         pr_err("Failed to stop FLL\n");
 49                         return ret;
 50                 }
 51                 break;
 52 
 53         default:
 54                 break;
 55         }
 56 
 57         return 0;
 58 }
 59 
 60 static int speyside_set_bias_level_post(struct snd_soc_card *card,
 61                                         struct snd_soc_dapm_context *dapm,
 62                                         enum snd_soc_bias_level level)
 63 {
 64         struct snd_soc_pcm_runtime *rtd;
 65         struct snd_soc_dai *codec_dai;
 66         int ret;
 67 
 68         rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
 69         codec_dai = rtd->codec_dai;
 70 
 71         if (dapm->dev != codec_dai->dev)
 72                 return 0;
 73 
 74         switch (level) {
 75         case SND_SOC_BIAS_PREPARE:
 76                 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
 77                         ret = snd_soc_dai_set_pll(codec_dai, 0,
 78                                                   WM8996_FLL_MCLK2,
 79                                                   32768, MCLK_AUDIO_RATE);
 80                         if (ret < 0) {
 81                                 pr_err("Failed to start FLL\n");
 82                                 return ret;
 83                         }
 84 
 85                         ret = snd_soc_dai_set_sysclk(codec_dai,
 86                                                      WM8996_SYSCLK_FLL,
 87                                                      MCLK_AUDIO_RATE,
 88                                                      SND_SOC_CLOCK_IN);
 89                         if (ret < 0)
 90                                 return ret;
 91                 }
 92                 break;
 93 
 94         default:
 95                 break;
 96         }
 97 
 98         card->dapm.bias_level = level;
 99 
100         return 0;
101 }
102 
103 static struct snd_soc_jack speyside_headset;
104 
105 /* Headset jack detection DAPM pins */
106 static struct snd_soc_jack_pin speyside_headset_pins[] = {
107         {
108                 .pin = "Headset Mic",
109                 .mask = SND_JACK_MICROPHONE,
110         },
111 };
112 
113 /* Default the headphone selection to active high */
114 static int speyside_jack_polarity;
115 
116 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
117                                 struct snd_soc_dapm_widget *sink)
118 {
119         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
120                 return 1;
121         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
122                 return 1;
123 
124         return 0;
125 }
126 
127 static void speyside_set_polarity(struct snd_soc_codec *codec,
128                                   int polarity)
129 {
130         speyside_jack_polarity = !polarity;
131         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
132 
133         /* Re-run DAPM to make sure we're using the correct mic bias */
134         snd_soc_dapm_sync(snd_soc_codec_get_dapm(codec));
135 }
136 
137 static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
138 {
139         struct snd_soc_dai *dai = rtd->codec_dai;
140         int ret;
141 
142         ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
143         if (ret < 0)
144                 return ret;
145 
146         return 0;
147 }
148 
149 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
150 {
151         struct snd_soc_dai *dai = rtd->codec_dai;
152         struct snd_soc_codec *codec = rtd->codec;
153         int ret;
154 
155         ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
156         if (ret < 0)
157                 return ret;
158 
159         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
160         if (ret != 0)
161                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
162         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
163 
164         ret = snd_soc_card_jack_new(rtd->card, "Headset", SND_JACK_LINEOUT |
165                                     SND_JACK_HEADSET | SND_JACK_BTN_0,
166                                     &speyside_headset, speyside_headset_pins,
167                                     ARRAY_SIZE(speyside_headset_pins));
168         if (ret)
169                 return ret;
170 
171         wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
172 
173         return 0;
174 }
175 
176 static int speyside_late_probe(struct snd_soc_card *card)
177 {
178         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
179         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
180         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
181         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
182         snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
183         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
184         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
185 
186         return 0;
187 }
188 
189 static const struct snd_soc_pcm_stream dsp_codec_params = {
190         .formats = SNDRV_PCM_FMTBIT_S32_LE,
191         .rate_min = 48000,
192         .rate_max = 48000,
193         .channels_min = 2,
194         .channels_max = 2,
195 };
196 
197 static struct snd_soc_dai_link speyside_dai[] = {
198         {
199                 .name = "CPU-DSP",
200                 .stream_name = "CPU-DSP",
201                 .cpu_dai_name = "samsung-i2s.0",
202                 .codec_dai_name = "wm0010-sdi1",
203                 .platform_name = "samsung-i2s.0",
204                 .codec_name = "spi0.0",
205                 .init = speyside_wm0010_init,
206                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
207                                 | SND_SOC_DAIFMT_CBM_CFM,
208         },
209         {
210                 .name = "DSP-CODEC",
211                 .stream_name = "DSP-CODEC",
212                 .cpu_dai_name = "wm0010-sdi2",
213                 .codec_dai_name = "wm8996-aif1",
214                 .codec_name = "wm8996.1-001a",
215                 .init = speyside_wm8996_init,
216                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
217                                 | SND_SOC_DAIFMT_CBM_CFM,
218                 .params = &dsp_codec_params,
219                 .ignore_suspend = 1,
220         },
221         {
222                 .name = "Baseband",
223                 .stream_name = "Baseband",
224                 .cpu_dai_name = "wm8996-aif2",
225                 .codec_dai_name = "wm1250-ev1",
226                 .codec_name = "wm1250-ev1.1-0027",
227                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
228                                 | SND_SOC_DAIFMT_CBM_CFM,
229                 .ignore_suspend = 1,
230         },
231 };
232 
233 static int speyside_wm9081_init(struct snd_soc_component *component)
234 {
235         struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
236 
237         /* At any time the WM9081 is active it will have this clock */
238         return snd_soc_codec_set_sysclk(codec, WM9081_SYSCLK_MCLK, 0,
239                                         MCLK_AUDIO_RATE, 0);
240 }
241 
242 static struct snd_soc_aux_dev speyside_aux_dev[] = {
243         {
244                 .name = "wm9081",
245                 .codec_name = "wm9081.1-006c",
246                 .init = speyside_wm9081_init,
247         },
248 };
249 
250 static struct snd_soc_codec_conf speyside_codec_conf[] = {
251         {
252                 .dev_name = "wm9081.1-006c",
253                 .name_prefix = "Sub",
254         },
255 };
256 
257 static const struct snd_kcontrol_new controls[] = {
258         SOC_DAPM_PIN_SWITCH("Main Speaker"),
259         SOC_DAPM_PIN_SWITCH("Main DMIC"),
260         SOC_DAPM_PIN_SWITCH("Main AMIC"),
261         SOC_DAPM_PIN_SWITCH("WM1250 Input"),
262         SOC_DAPM_PIN_SWITCH("WM1250 Output"),
263         SOC_DAPM_PIN_SWITCH("Headphone"),
264 };
265 
266 static struct snd_soc_dapm_widget widgets[] = {
267         SND_SOC_DAPM_HP("Headphone", NULL),
268         SND_SOC_DAPM_MIC("Headset Mic", NULL),
269 
270         SND_SOC_DAPM_SPK("Main Speaker", NULL),
271 
272         SND_SOC_DAPM_MIC("Main AMIC", NULL),
273         SND_SOC_DAPM_MIC("Main DMIC", NULL),
274 };
275 
276 static struct snd_soc_dapm_route audio_paths[] = {
277         { "IN1RN", NULL, "MICB1" },
278         { "IN1RP", NULL, "MICB1" },
279         { "IN1RN", NULL, "MICB2" },
280         { "IN1RP", NULL, "MICB2" },
281         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
282         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
283 
284         { "IN1LP", NULL, "MICB2" },
285         { "IN1RN", NULL, "MICB1" },
286         { "MICB2", NULL, "Main AMIC" },
287 
288         { "DMIC1DAT", NULL, "MICB1" },
289         { "DMIC2DAT", NULL, "MICB1" },
290         { "MICB1", NULL, "Main DMIC" },
291 
292         { "Headphone", NULL, "HPOUT1L" },
293         { "Headphone", NULL, "HPOUT1R" },
294 
295         { "Sub IN1", NULL, "HPOUT2L" },
296         { "Sub IN2", NULL, "HPOUT2R" },
297 
298         { "Main Speaker", NULL, "Sub SPKN" },
299         { "Main Speaker", NULL, "Sub SPKP" },
300         { "Main Speaker", NULL, "SPKDAT" },
301 };
302 
303 static struct snd_soc_card speyside = {
304         .name = "Speyside",
305         .owner = THIS_MODULE,
306         .dai_link = speyside_dai,
307         .num_links = ARRAY_SIZE(speyside_dai),
308         .aux_dev = speyside_aux_dev,
309         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
310         .codec_conf = speyside_codec_conf,
311         .num_configs = ARRAY_SIZE(speyside_codec_conf),
312 
313         .set_bias_level = speyside_set_bias_level,
314         .set_bias_level_post = speyside_set_bias_level_post,
315 
316         .controls = controls,
317         .num_controls = ARRAY_SIZE(controls),
318         .dapm_widgets = widgets,
319         .num_dapm_widgets = ARRAY_SIZE(widgets),
320         .dapm_routes = audio_paths,
321         .num_dapm_routes = ARRAY_SIZE(audio_paths),
322         .fully_routed = true,
323 
324         .late_probe = speyside_late_probe,
325 };
326 
327 static int speyside_probe(struct platform_device *pdev)
328 {
329         struct snd_soc_card *card = &speyside;
330         int ret;
331 
332         card->dev = &pdev->dev;
333 
334         ret = devm_snd_soc_register_card(&pdev->dev, card);
335         if (ret)
336                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
337                         ret);
338 
339         return ret;
340 }
341 
342 static struct platform_driver speyside_driver = {
343         .driver = {
344                 .name = "speyside",
345                 .pm = &snd_soc_pm_ops,
346         },
347         .probe = speyside_probe,
348 };
349 
350 module_platform_driver(speyside_driver);
351 
352 MODULE_DESCRIPTION("Speyside audio support");
353 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
354 MODULE_LICENSE("GPL");
355 MODULE_ALIAS("platform:speyside");
356 

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