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[0].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[0].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_wm8996_init(struct snd_soc_pcm_runtime *rtd) 130 { 131 struct snd_soc_dai *dai = rtd->codec_dai; 132 struct snd_soc_codec *codec = rtd->codec; 133 int ret; 134 135 ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0); 136 if (ret < 0) 137 return ret; 138 139 ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL"); 140 if (ret != 0) 141 pr_err("Failed to request HP_SEL GPIO: %d\n", ret); 142 gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity); 143 144 ret = snd_soc_jack_new(codec, "Headset", 145 SND_JACK_LINEOUT | SND_JACK_HEADSET | 146 SND_JACK_BTN_0, 147 &speyside_headset); 148 if (ret) 149 return ret; 150 151 ret = snd_soc_jack_add_pins(&speyside_headset, 152 ARRAY_SIZE(speyside_headset_pins), 153 speyside_headset_pins); 154 if (ret) 155 return ret; 156 157 wm8996_detect(codec, &speyside_headset, speyside_set_polarity); 158 159 return 0; 160 } 161 162 static int speyside_late_probe(struct snd_soc_card *card) 163 { 164 snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone"); 165 snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic"); 166 snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC"); 167 snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC"); 168 snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker"); 169 snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output"); 170 snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input"); 171 172 return 0; 173 } 174 175 static struct snd_soc_dai_link speyside_dai[] = { 176 { 177 .name = "CPU", 178 .stream_name = "CPU", 179 .cpu_dai_name = "samsung-i2s.0", 180 .codec_dai_name = "wm8996-aif1", 181 .platform_name = "samsung-audio", 182 .codec_name = "wm8996.1-001a", 183 .init = speyside_wm8996_init, 184 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 185 | SND_SOC_DAIFMT_CBM_CFM, 186 }, 187 { 188 .name = "Baseband", 189 .stream_name = "Baseband", 190 .cpu_dai_name = "wm8996-aif2", 191 .codec_dai_name = "wm1250-ev1", 192 .codec_name = "wm1250-ev1.1-0027", 193 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 194 | SND_SOC_DAIFMT_CBM_CFM, 195 .ignore_suspend = 1, 196 }, 197 }; 198 199 static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm) 200 { 201 /* At any time the WM9081 is active it will have this clock */ 202 return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0, 203 MCLK_AUDIO_RATE, 0); 204 } 205 206 static struct snd_soc_aux_dev speyside_aux_dev[] = { 207 { 208 .name = "wm9081", 209 .codec_name = "wm9081.1-006c", 210 .init = speyside_wm9081_init, 211 }, 212 }; 213 214 static struct snd_soc_codec_conf speyside_codec_conf[] = { 215 { 216 .dev_name = "wm9081.1-006c", 217 .name_prefix = "Sub", 218 }, 219 }; 220 221 static const struct snd_kcontrol_new controls[] = { 222 SOC_DAPM_PIN_SWITCH("Main Speaker"), 223 SOC_DAPM_PIN_SWITCH("Main DMIC"), 224 SOC_DAPM_PIN_SWITCH("Main AMIC"), 225 SOC_DAPM_PIN_SWITCH("WM1250 Input"), 226 SOC_DAPM_PIN_SWITCH("WM1250 Output"), 227 SOC_DAPM_PIN_SWITCH("Headphone"), 228 }; 229 230 static struct snd_soc_dapm_widget widgets[] = { 231 SND_SOC_DAPM_HP("Headphone", NULL), 232 SND_SOC_DAPM_MIC("Headset Mic", NULL), 233 234 SND_SOC_DAPM_SPK("Main Speaker", NULL), 235 236 SND_SOC_DAPM_MIC("Main AMIC", NULL), 237 SND_SOC_DAPM_MIC("Main DMIC", NULL), 238 }; 239 240 static struct snd_soc_dapm_route audio_paths[] = { 241 { "IN1RN", NULL, "MICB1" }, 242 { "IN1RP", NULL, "MICB1" }, 243 { "IN1RN", NULL, "MICB2" }, 244 { "IN1RP", NULL, "MICB2" }, 245 { "MICB1", NULL, "Headset Mic", speyside_get_micbias }, 246 { "MICB2", NULL, "Headset Mic", speyside_get_micbias }, 247 248 { "IN1LP", NULL, "MICB2" }, 249 { "IN1RN", NULL, "MICB1" }, 250 { "MICB2", NULL, "Main AMIC" }, 251 252 { "DMIC1DAT", NULL, "MICB1" }, 253 { "DMIC2DAT", NULL, "MICB1" }, 254 { "MICB1", NULL, "Main DMIC" }, 255 256 { "Headphone", NULL, "HPOUT1L" }, 257 { "Headphone", NULL, "HPOUT1R" }, 258 259 { "Sub IN1", NULL, "HPOUT2L" }, 260 { "Sub IN2", NULL, "HPOUT2R" }, 261 262 { "Main Speaker", NULL, "Sub SPKN" }, 263 { "Main Speaker", NULL, "Sub SPKP" }, 264 { "Main Speaker", NULL, "SPKDAT" }, 265 }; 266 267 static struct snd_soc_card speyside = { 268 .name = "Speyside", 269 .owner = THIS_MODULE, 270 .dai_link = speyside_dai, 271 .num_links = ARRAY_SIZE(speyside_dai), 272 .aux_dev = speyside_aux_dev, 273 .num_aux_devs = ARRAY_SIZE(speyside_aux_dev), 274 .codec_conf = speyside_codec_conf, 275 .num_configs = ARRAY_SIZE(speyside_codec_conf), 276 277 .set_bias_level = speyside_set_bias_level, 278 .set_bias_level_post = speyside_set_bias_level_post, 279 280 .controls = controls, 281 .num_controls = ARRAY_SIZE(controls), 282 .dapm_widgets = widgets, 283 .num_dapm_widgets = ARRAY_SIZE(widgets), 284 .dapm_routes = audio_paths, 285 .num_dapm_routes = ARRAY_SIZE(audio_paths), 286 .fully_routed = true, 287 288 .late_probe = speyside_late_probe, 289 }; 290 291 static __devinit int speyside_probe(struct platform_device *pdev) 292 { 293 struct snd_soc_card *card = &speyside; 294 int ret; 295 296 card->dev = &pdev->dev; 297 298 ret = snd_soc_register_card(card); 299 if (ret) { 300 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", 301 ret); 302 return ret; 303 } 304 305 return 0; 306 } 307 308 static int __devexit speyside_remove(struct platform_device *pdev) 309 { 310 struct snd_soc_card *card = platform_get_drvdata(pdev); 311 312 snd_soc_unregister_card(card); 313 314 return 0; 315 } 316 317 static struct platform_driver speyside_driver = { 318 .driver = { 319 .name = "speyside", 320 .owner = THIS_MODULE, 321 .pm = &snd_soc_pm_ops, 322 }, 323 .probe = speyside_probe, 324 .remove = __devexit_p(speyside_remove), 325 }; 326 327 module_platform_driver(speyside_driver); 328 329 MODULE_DESCRIPTION("Speyside audio support"); 330 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 331 MODULE_LICENSE("GPL"); 332 MODULE_ALIAS("platform:speyside"); 333