Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Littlemill 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/wm8994.h" |
| 19 | |
| 20 | static int sample_rate = 44100; |
| 21 | |
| 22 | static int littlemill_set_bias_level(struct snd_soc_card *card, |
| 23 | struct snd_soc_dapm_context *dapm, |
| 24 | enum snd_soc_bias_level level) |
| 25 | { |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 26 | struct snd_soc_pcm_runtime *rtd; |
| 27 | struct snd_soc_dai *aif1_dai; |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 28 | int ret; |
| 29 | |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 30 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| 31 | aif1_dai = rtd->codec_dai; |
| 32 | |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 33 | if (dapm->dev != aif1_dai->dev) |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 34 | return 0; |
| 35 | |
| 36 | switch (level) { |
| 37 | case SND_SOC_BIAS_PREPARE: |
| 38 | /* |
| 39 | * If we've not already clocked things via hw_params() |
| 40 | * then do so now, otherwise these are noops. |
| 41 | */ |
| 42 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 43 | ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 44 | WM8994_FLL_SRC_MCLK2, 32768, |
| 45 | sample_rate * 512); |
| 46 | if (ret < 0) { |
| 47 | pr_err("Failed to start FLL: %d\n", ret); |
| 48 | return ret; |
| 49 | } |
| 50 | |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 51 | ret = snd_soc_dai_set_sysclk(aif1_dai, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 52 | WM8994_SYSCLK_FLL1, |
| 53 | sample_rate * 512, |
| 54 | SND_SOC_CLOCK_IN); |
| 55 | if (ret < 0) { |
| 56 | pr_err("Failed to set SYSCLK: %d\n", ret); |
| 57 | return ret; |
| 58 | } |
| 59 | } |
| 60 | break; |
| 61 | |
| 62 | default: |
| 63 | break; |
| 64 | } |
| 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | |
| 69 | static int littlemill_set_bias_level_post(struct snd_soc_card *card, |
| 70 | struct snd_soc_dapm_context *dapm, |
| 71 | enum snd_soc_bias_level level) |
| 72 | { |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 73 | struct snd_soc_pcm_runtime *rtd; |
| 74 | struct snd_soc_dai *aif1_dai; |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 75 | int ret; |
| 76 | |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 77 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| 78 | aif1_dai = rtd->codec_dai; |
| 79 | |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 80 | if (dapm->dev != aif1_dai->dev) |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 81 | return 0; |
| 82 | |
| 83 | switch (level) { |
| 84 | case SND_SOC_BIAS_STANDBY: |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 85 | ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, |
| 86 | 32768, SND_SOC_CLOCK_IN); |
| 87 | if (ret < 0) { |
| 88 | pr_err("Failed to switch away from FLL1: %d\n", ret); |
| 89 | return ret; |
| 90 | } |
| 91 | |
| 92 | ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, |
| 93 | 0, 0, 0); |
| 94 | if (ret < 0) { |
| 95 | pr_err("Failed to stop FLL1: %d\n", ret); |
| 96 | return ret; |
| 97 | } |
| 98 | break; |
| 99 | |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 100 | default: |
| 101 | break; |
| 102 | } |
| 103 | |
| 104 | dapm->bias_level = level; |
| 105 | |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | static int littlemill_hw_params(struct snd_pcm_substream *substream, |
| 110 | struct snd_pcm_hw_params *params) |
| 111 | { |
| 112 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 113 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 114 | int ret; |
| 115 | |
| 116 | sample_rate = params_rate(params); |
| 117 | |
| 118 | ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, |
| 119 | WM8994_FLL_SRC_MCLK2, 32768, |
| 120 | sample_rate * 512); |
| 121 | if (ret < 0) { |
| 122 | pr_err("Failed to start FLL: %d\n", ret); |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | ret = snd_soc_dai_set_sysclk(codec_dai, |
| 127 | WM8994_SYSCLK_FLL1, |
| 128 | sample_rate * 512, |
| 129 | SND_SOC_CLOCK_IN); |
| 130 | if (ret < 0) { |
| 131 | pr_err("Failed to set SYSCLK: %d\n", ret); |
| 132 | return ret; |
| 133 | } |
| 134 | |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | static struct snd_soc_ops littlemill_ops = { |
| 139 | .hw_params = littlemill_hw_params, |
| 140 | }; |
| 141 | |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 142 | static const struct snd_soc_pcm_stream baseband_params = { |
| 143 | .formats = SNDRV_PCM_FMTBIT_S32_LE, |
| 144 | .rate_min = 8000, |
| 145 | .rate_max = 8000, |
| 146 | .channels_min = 2, |
| 147 | .channels_max = 2, |
| 148 | }; |
| 149 | |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 150 | static struct snd_soc_dai_link littlemill_dai[] = { |
| 151 | { |
| 152 | .name = "CPU", |
| 153 | .stream_name = "CPU", |
| 154 | .cpu_dai_name = "samsung-i2s.0", |
| 155 | .codec_dai_name = "wm8994-aif1", |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 156 | .platform_name = "samsung-i2s.0", |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 157 | .codec_name = "wm8994-codec", |
| 158 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
| 159 | | SND_SOC_DAIFMT_CBM_CFM, |
| 160 | .ops = &littlemill_ops, |
| 161 | }, |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 162 | { |
| 163 | .name = "Baseband", |
| 164 | .stream_name = "Baseband", |
| 165 | .cpu_dai_name = "wm8994-aif2", |
| 166 | .codec_dai_name = "wm1250-ev1", |
| 167 | .codec_name = "wm1250-ev1.1-0027", |
| 168 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
| 169 | | SND_SOC_DAIFMT_CBM_CFM, |
| 170 | .ignore_suspend = 1, |
| 171 | .params = &baseband_params, |
| 172 | }, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 173 | }; |
| 174 | |
Mark Brown | 68a02db | 2012-05-12 12:35:44 +0100 | [diff] [blame] | 175 | static int bbclk_ev(struct snd_soc_dapm_widget *w, |
| 176 | struct snd_kcontrol *kcontrol, int event) |
| 177 | { |
| 178 | struct snd_soc_card *card = w->dapm->card; |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 179 | struct snd_soc_pcm_runtime *rtd; |
| 180 | struct snd_soc_dai *aif2_dai; |
Mark Brown | 68a02db | 2012-05-12 12:35:44 +0100 | [diff] [blame] | 181 | int ret; |
| 182 | |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 183 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name); |
| 184 | aif2_dai = rtd->cpu_dai; |
| 185 | |
Mark Brown | 68a02db | 2012-05-12 12:35:44 +0100 | [diff] [blame] | 186 | switch (event) { |
| 187 | case SND_SOC_DAPM_PRE_PMU: |
| 188 | ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2, |
| 189 | WM8994_FLL_SRC_BCLK, 64 * 8000, |
| 190 | 8000 * 256); |
| 191 | if (ret < 0) { |
| 192 | pr_err("Failed to start FLL: %d\n", ret); |
| 193 | return ret; |
| 194 | } |
| 195 | |
| 196 | ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2, |
| 197 | 8000 * 256, |
| 198 | SND_SOC_CLOCK_IN); |
| 199 | if (ret < 0) { |
| 200 | pr_err("Failed to set SYSCLK: %d\n", ret); |
| 201 | return ret; |
| 202 | } |
| 203 | break; |
| 204 | case SND_SOC_DAPM_POST_PMD: |
| 205 | ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2, |
| 206 | 32768, SND_SOC_CLOCK_IN); |
| 207 | if (ret < 0) { |
| 208 | pr_err("Failed to switch away from FLL2: %d\n", ret); |
| 209 | return ret; |
| 210 | } |
| 211 | |
| 212 | ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2, |
| 213 | 0, 0, 0); |
| 214 | if (ret < 0) { |
| 215 | pr_err("Failed to stop FLL2: %d\n", ret); |
| 216 | return ret; |
| 217 | } |
| 218 | break; |
| 219 | default: |
| 220 | return -EINVAL; |
| 221 | } |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | |
Mark Brown | 31a2239 | 2012-07-18 19:16:06 +0100 | [diff] [blame] | 226 | static const struct snd_kcontrol_new controls[] = { |
| 227 | SOC_DAPM_PIN_SWITCH("WM1250 Input"), |
| 228 | SOC_DAPM_PIN_SWITCH("WM1250 Output"), |
| 229 | }; |
| 230 | |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 231 | static struct snd_soc_dapm_widget widgets[] = { |
| 232 | SND_SOC_DAPM_HP("Headphone", NULL), |
Mark Brown | 8f10316 | 2011-12-02 17:36:06 +0000 | [diff] [blame] | 233 | |
| 234 | SND_SOC_DAPM_MIC("AMIC", NULL), |
| 235 | SND_SOC_DAPM_MIC("DMIC", NULL), |
Mark Brown | 68a02db | 2012-05-12 12:35:44 +0100 | [diff] [blame] | 236 | |
| 237 | SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0, |
| 238 | bbclk_ev, |
| 239 | SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 240 | }; |
| 241 | |
| 242 | static struct snd_soc_dapm_route audio_paths[] = { |
| 243 | { "Headphone", NULL, "HPOUT1L" }, |
| 244 | { "Headphone", NULL, "HPOUT1R" }, |
Mark Brown | 8f10316 | 2011-12-02 17:36:06 +0000 | [diff] [blame] | 245 | |
| 246 | { "AMIC", NULL, "MICBIAS1" }, /* Default for AMICBIAS jumper */ |
| 247 | { "IN1LN", NULL, "AMIC" }, |
| 248 | |
| 249 | { "DMIC", NULL, "MICBIAS2" }, /* Default for DMICBIAS jumper */ |
| 250 | { "DMIC1DAT", NULL, "DMIC" }, |
| 251 | { "DMIC2DAT", NULL, "DMIC" }, |
Mark Brown | 68a02db | 2012-05-12 12:35:44 +0100 | [diff] [blame] | 252 | |
| 253 | { "AIF2CLK", NULL, "Baseband Clock" }, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 254 | }; |
| 255 | |
Mark Brown | f2e2026 | 2011-12-02 15:55:52 +0000 | [diff] [blame] | 256 | static struct snd_soc_jack littlemill_headset; |
| 257 | |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 258 | static int littlemill_late_probe(struct snd_soc_card *card) |
| 259 | { |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 260 | struct snd_soc_pcm_runtime *rtd; |
| 261 | struct snd_soc_codec *codec; |
| 262 | struct snd_soc_dai *aif1_dai; |
| 263 | struct snd_soc_dai *aif2_dai; |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 264 | int ret; |
| 265 | |
Mengdong Lin | 5015920 | 2015-11-18 02:34:01 -0500 | [diff] [blame^] | 266 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| 267 | codec = rtd->codec; |
| 268 | aif1_dai = rtd->codec_dai; |
| 269 | |
| 270 | rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name); |
| 271 | aif2_dai = rtd->cpu_dai; |
| 272 | |
Mark Brown | 0cbe4b3 | 2012-04-18 18:20:05 +0100 | [diff] [blame] | 273 | ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, |
| 274 | 32768, SND_SOC_CLOCK_IN); |
| 275 | if (ret < 0) |
| 276 | return ret; |
| 277 | |
| 278 | ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 279 | 32768, SND_SOC_CLOCK_IN); |
| 280 | if (ret < 0) |
| 281 | return ret; |
| 282 | |
Lars-Peter Clausen | 39ec510 | 2015-03-04 10:33:34 +0100 | [diff] [blame] | 283 | ret = snd_soc_card_jack_new(card, "Headset", |
| 284 | SND_JACK_HEADSET | SND_JACK_MECHANICAL | |
| 285 | SND_JACK_BTN_0 | SND_JACK_BTN_1 | |
| 286 | SND_JACK_BTN_2 | SND_JACK_BTN_3 | |
| 287 | SND_JACK_BTN_4 | SND_JACK_BTN_5, |
| 288 | &littlemill_headset, NULL, 0); |
Mark Brown | f2e2026 | 2011-12-02 15:55:52 +0000 | [diff] [blame] | 289 | if (ret) |
| 290 | return ret; |
| 291 | |
| 292 | /* This will check device compatibility itself */ |
Mark Brown | 98869f6 | 2012-12-03 16:14:37 +0900 | [diff] [blame] | 293 | wm8958_mic_detect(codec, &littlemill_headset, NULL, NULL, NULL, NULL); |
Mark Brown | f2e2026 | 2011-12-02 15:55:52 +0000 | [diff] [blame] | 294 | |
Mark Brown | 654a28c | 2012-02-03 13:15:18 +0000 | [diff] [blame] | 295 | /* As will this */ |
| 296 | wm8994_mic_detect(codec, &littlemill_headset, 1); |
| 297 | |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | static struct snd_soc_card littlemill = { |
| 302 | .name = "Littlemill", |
Axel Lin | 095d79d | 2011-12-22 10:53:15 +0800 | [diff] [blame] | 303 | .owner = THIS_MODULE, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 304 | .dai_link = littlemill_dai, |
| 305 | .num_links = ARRAY_SIZE(littlemill_dai), |
| 306 | |
| 307 | .set_bias_level = littlemill_set_bias_level, |
| 308 | .set_bias_level_post = littlemill_set_bias_level_post, |
| 309 | |
Mark Brown | 31a2239 | 2012-07-18 19:16:06 +0100 | [diff] [blame] | 310 | .controls = controls, |
| 311 | .num_controls = ARRAY_SIZE(controls), |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 312 | .dapm_widgets = widgets, |
| 313 | .num_dapm_widgets = ARRAY_SIZE(widgets), |
| 314 | .dapm_routes = audio_paths, |
| 315 | .num_dapm_routes = ARRAY_SIZE(audio_paths), |
| 316 | |
| 317 | .late_probe = littlemill_late_probe, |
| 318 | }; |
| 319 | |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 320 | static int littlemill_probe(struct platform_device *pdev) |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 321 | { |
| 322 | struct snd_soc_card *card = &littlemill; |
| 323 | int ret; |
| 324 | |
| 325 | card->dev = &pdev->dev; |
| 326 | |
Tushar Behera | c583883 | 2014-05-21 08:52:17 +0530 | [diff] [blame] | 327 | ret = devm_snd_soc_register_card(&pdev->dev, card); |
| 328 | if (ret) |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 329 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
| 330 | ret); |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 331 | |
Tushar Behera | c583883 | 2014-05-21 08:52:17 +0530 | [diff] [blame] | 332 | return ret; |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | static struct platform_driver littlemill_driver = { |
| 336 | .driver = { |
| 337 | .name = "littlemill", |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 338 | .pm = &snd_soc_pm_ops, |
| 339 | }, |
| 340 | .probe = littlemill_probe, |
Mark Brown | 0a590b1 | 2011-11-28 22:05:41 +0000 | [diff] [blame] | 341 | }; |
| 342 | |
| 343 | module_platform_driver(littlemill_driver); |
| 344 | |
| 345 | MODULE_DESCRIPTION("Littlemill audio support"); |
| 346 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| 347 | MODULE_LICENSE("GPL"); |
| 348 | MODULE_ALIAS("platform:littlemill"); |