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

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