1 /* 2 * cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms 3 * Cherrytrail and Braswell, with RT5672 codec. 4 * 5 * Copyright (C) 2014 Intel Corp 6 * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com> 7 * Mengdong Lin <mengdong.lin@intel.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; version 2 of the License. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 */ 18 19 #include <linux/module.h> 20 #include <linux/platform_device.h> 21 #include <linux/slab.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/jack.h> 26 #include "../../codecs/rt5670.h" 27 #include "../atom/sst-atom-controls.h" 28 29 /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */ 30 #define CHT_PLAT_CLK_3_HZ 19200000 31 #define CHT_CODEC_DAI "rt5670-aif1" 32 33 static struct snd_soc_jack cht_bsw_headset; 34 35 /* Headset jack detection DAPM pins */ 36 static struct snd_soc_jack_pin cht_bsw_headset_pins[] = { 37 { 38 .pin = "Headset Mic", 39 .mask = SND_JACK_MICROPHONE, 40 }, 41 { 42 .pin = "Headphone", 43 .mask = SND_JACK_HEADPHONE, 44 }, 45 }; 46 47 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) 48 { 49 struct snd_soc_pcm_runtime *rtd; 50 51 list_for_each_entry(rtd, &card->rtd_list, list) { 52 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, 53 strlen(CHT_CODEC_DAI))) 54 return rtd->codec_dai; 55 } 56 return NULL; 57 } 58 59 static int platform_clock_control(struct snd_soc_dapm_widget *w, 60 struct snd_kcontrol *k, int event) 61 { 62 struct snd_soc_dapm_context *dapm = w->dapm; 63 struct snd_soc_card *card = dapm->card; 64 struct snd_soc_dai *codec_dai; 65 int ret; 66 67 codec_dai = cht_get_codec_dai(card); 68 if (!codec_dai) { 69 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); 70 return -EIO; 71 } 72 73 if (SND_SOC_DAPM_EVENT_ON(event)) { 74 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ 75 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, 76 CHT_PLAT_CLK_3_HZ, 48000 * 512); 77 if (ret < 0) { 78 dev_err(card->dev, "can't set codec pll: %d\n", ret); 79 return ret; 80 } 81 82 /* set codec sysclk source to PLL */ 83 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 84 48000 * 512, SND_SOC_CLOCK_IN); 85 if (ret < 0) { 86 dev_err(card->dev, "can't set codec sysclk: %d\n", ret); 87 return ret; 88 } 89 } else { 90 /* Set codec sysclk source to its internal clock because codec 91 * PLL will be off when idle and MCLK will also be off by ACPI 92 * when codec is runtime suspended. Codec needs clock for jack 93 * detection and button press. 94 */ 95 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK, 96 48000 * 512, SND_SOC_CLOCK_IN); 97 } 98 return 0; 99 } 100 101 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = { 102 SND_SOC_DAPM_HP("Headphone", NULL), 103 SND_SOC_DAPM_MIC("Headset Mic", NULL), 104 SND_SOC_DAPM_MIC("Int Mic", NULL), 105 SND_SOC_DAPM_SPK("Ext Spk", NULL), 106 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 107 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 108 SND_SOC_DAPM_POST_PMD), 109 }; 110 111 static const struct snd_soc_dapm_route cht_audio_map[] = { 112 {"IN1P", NULL, "Headset Mic"}, 113 {"IN1N", NULL, "Headset Mic"}, 114 {"DMIC L1", NULL, "Int Mic"}, 115 {"DMIC R1", NULL, "Int Mic"}, 116 {"Headphone", NULL, "HPOL"}, 117 {"Headphone", NULL, "HPOR"}, 118 {"Ext Spk", NULL, "SPOLP"}, 119 {"Ext Spk", NULL, "SPOLN"}, 120 {"Ext Spk", NULL, "SPORP"}, 121 {"Ext Spk", NULL, "SPORN"}, 122 {"AIF1 Playback", NULL, "ssp2 Tx"}, 123 {"ssp2 Tx", NULL, "codec_out0"}, 124 {"ssp2 Tx", NULL, "codec_out1"}, 125 {"codec_in0", NULL, "ssp2 Rx"}, 126 {"codec_in1", NULL, "ssp2 Rx"}, 127 {"ssp2 Rx", NULL, "AIF1 Capture"}, 128 {"Headphone", NULL, "Platform Clock"}, 129 {"Headset Mic", NULL, "Platform Clock"}, 130 {"Int Mic", NULL, "Platform Clock"}, 131 {"Ext Spk", NULL, "Platform Clock"}, 132 }; 133 134 static const struct snd_kcontrol_new cht_mc_controls[] = { 135 SOC_DAPM_PIN_SWITCH("Headphone"), 136 SOC_DAPM_PIN_SWITCH("Headset Mic"), 137 SOC_DAPM_PIN_SWITCH("Int Mic"), 138 SOC_DAPM_PIN_SWITCH("Ext Spk"), 139 }; 140 141 static int cht_aif1_hw_params(struct snd_pcm_substream *substream, 142 struct snd_pcm_hw_params *params) 143 { 144 struct snd_soc_pcm_runtime *rtd = substream->private_data; 145 struct snd_soc_dai *codec_dai = rtd->codec_dai; 146 int ret; 147 148 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ 149 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, 150 CHT_PLAT_CLK_3_HZ, params_rate(params) * 512); 151 if (ret < 0) { 152 dev_err(rtd->dev, "can't set codec pll: %d\n", ret); 153 return ret; 154 } 155 156 /* set codec sysclk source to PLL */ 157 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 158 params_rate(params) * 512, 159 SND_SOC_CLOCK_IN); 160 if (ret < 0) { 161 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret); 162 return ret; 163 } 164 return 0; 165 } 166 167 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime) 168 { 169 int ret; 170 struct snd_soc_dai *codec_dai = runtime->codec_dai; 171 struct snd_soc_codec *codec = codec_dai->codec; 172 173 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ 174 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); 175 if (ret < 0) { 176 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret); 177 return ret; 178 } 179 180 /* Select codec ASRC clock source to track I2S1 clock, because codec 181 * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot 182 * be supported by RT5672. Otherwise, ASRC will be disabled and cause 183 * noise. 184 */ 185 rt5670_sel_asrc_clk_src(codec, 186 RT5670_DA_STEREO_FILTER 187 | RT5670_DA_MONO_L_FILTER 188 | RT5670_DA_MONO_R_FILTER 189 | RT5670_AD_STEREO_FILTER 190 | RT5670_AD_MONO_L_FILTER 191 | RT5670_AD_MONO_R_FILTER, 192 RT5670_CLK_SEL_I2S1_ASRC); 193 194 ret = snd_soc_card_jack_new(runtime->card, "Headset", 195 SND_JACK_HEADSET | SND_JACK_BTN_0 | 196 SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset, 197 cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins)); 198 if (ret) 199 return ret; 200 201 rt5670_set_jack_detect(codec, &cht_bsw_headset); 202 return 0; 203 } 204 205 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd, 206 struct snd_pcm_hw_params *params) 207 { 208 struct snd_interval *rate = hw_param_interval(params, 209 SNDRV_PCM_HW_PARAM_RATE); 210 struct snd_interval *channels = hw_param_interval(params, 211 SNDRV_PCM_HW_PARAM_CHANNELS); 212 213 /* The DSP will covert the FE rate to 48k, stereo, 24bits */ 214 rate->min = rate->max = 48000; 215 channels->min = channels->max = 2; 216 217 /* set SSP2 to 24-bit */ 218 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); 219 return 0; 220 } 221 222 static int cht_aif1_startup(struct snd_pcm_substream *substream) 223 { 224 return snd_pcm_hw_constraint_single(substream->runtime, 225 SNDRV_PCM_HW_PARAM_RATE, 48000); 226 } 227 228 static struct snd_soc_ops cht_aif1_ops = { 229 .startup = cht_aif1_startup, 230 }; 231 232 static struct snd_soc_ops cht_be_ssp2_ops = { 233 .hw_params = cht_aif1_hw_params, 234 }; 235 236 static struct snd_soc_dai_link cht_dailink[] = { 237 /* Front End DAI links */ 238 [MERR_DPCM_AUDIO] = { 239 .name = "Audio Port", 240 .stream_name = "Audio", 241 .cpu_dai_name = "media-cpu-dai", 242 .codec_dai_name = "snd-soc-dummy-dai", 243 .codec_name = "snd-soc-dummy", 244 .platform_name = "sst-mfld-platform", 245 .nonatomic = true, 246 .dynamic = 1, 247 .dpcm_playback = 1, 248 .dpcm_capture = 1, 249 .ops = &cht_aif1_ops, 250 }, 251 [MERR_DPCM_DEEP_BUFFER] = { 252 .name = "Deep-Buffer Audio Port", 253 .stream_name = "Deep-Buffer Audio", 254 .cpu_dai_name = "deepbuffer-cpu-dai", 255 .codec_dai_name = "snd-soc-dummy-dai", 256 .codec_name = "snd-soc-dummy", 257 .platform_name = "sst-mfld-platform", 258 .nonatomic = true, 259 .dynamic = 1, 260 .dpcm_playback = 1, 261 .ops = &cht_aif1_ops, 262 }, 263 [MERR_DPCM_COMPR] = { 264 .name = "Compressed Port", 265 .stream_name = "Compress", 266 .cpu_dai_name = "compress-cpu-dai", 267 .codec_dai_name = "snd-soc-dummy-dai", 268 .codec_name = "snd-soc-dummy", 269 .platform_name = "sst-mfld-platform", 270 }, 271 272 /* Back End DAI links */ 273 { 274 /* SSP2 - Codec */ 275 .name = "SSP2-Codec", 276 .be_id = 1, 277 .cpu_dai_name = "ssp2-port", 278 .platform_name = "sst-mfld-platform", 279 .no_pcm = 1, 280 .nonatomic = true, 281 .codec_dai_name = "rt5670-aif1", 282 .codec_name = "i2c-10EC5670:00", 283 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF 284 | SND_SOC_DAIFMT_CBS_CFS, 285 .init = cht_codec_init, 286 .be_hw_params_fixup = cht_codec_fixup, 287 .dpcm_playback = 1, 288 .dpcm_capture = 1, 289 .ops = &cht_be_ssp2_ops, 290 }, 291 }; 292 293 static int cht_suspend_pre(struct snd_soc_card *card) 294 { 295 struct snd_soc_codec *codec; 296 297 list_for_each_entry(codec, &card->codec_dev_list, card_list) { 298 if (!strcmp(codec->component.name, "i2c-10EC5670:00")) { 299 dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n"); 300 rt5670_jack_suspend(codec); 301 break; 302 } 303 } 304 return 0; 305 } 306 307 static int cht_resume_post(struct snd_soc_card *card) 308 { 309 struct snd_soc_codec *codec; 310 311 list_for_each_entry(codec, &card->codec_dev_list, card_list) { 312 if (!strcmp(codec->component.name, "i2c-10EC5670:00")) { 313 dev_dbg(codec->dev, "enabling jack detect for resume.\n"); 314 rt5670_jack_resume(codec); 315 break; 316 } 317 } 318 319 return 0; 320 } 321 322 /* SoC card */ 323 static struct snd_soc_card snd_soc_card_cht = { 324 .name = "cherrytrailcraudio", 325 .owner = THIS_MODULE, 326 .dai_link = cht_dailink, 327 .num_links = ARRAY_SIZE(cht_dailink), 328 .dapm_widgets = cht_dapm_widgets, 329 .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets), 330 .dapm_routes = cht_audio_map, 331 .num_dapm_routes = ARRAY_SIZE(cht_audio_map), 332 .controls = cht_mc_controls, 333 .num_controls = ARRAY_SIZE(cht_mc_controls), 334 .suspend_pre = cht_suspend_pre, 335 .resume_post = cht_resume_post, 336 }; 337 338 static int snd_cht_mc_probe(struct platform_device *pdev) 339 { 340 int ret_val = 0; 341 342 /* register the soc card */ 343 snd_soc_card_cht.dev = &pdev->dev; 344 ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht); 345 if (ret_val) { 346 dev_err(&pdev->dev, 347 "snd_soc_register_card failed %d\n", ret_val); 348 return ret_val; 349 } 350 platform_set_drvdata(pdev, &snd_soc_card_cht); 351 return ret_val; 352 } 353 354 static struct platform_driver snd_cht_mc_driver = { 355 .driver = { 356 .name = "cht-bsw-rt5672", 357 }, 358 .probe = snd_cht_mc_probe, 359 }; 360 361 module_platform_driver(snd_cht_mc_driver); 362 363 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); 364 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin"); 365 MODULE_LICENSE("GPL v2"); 366 MODULE_ALIAS("platform:cht-bsw-rt5672"); 367