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 #include "../common/sst-acpi.h" 29 30 /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */ 31 #define CHT_PLAT_CLK_3_HZ 19200000 32 #define CHT_CODEC_DAI "rt5670-aif1" 33 34 static struct snd_soc_jack cht_bsw_headset; 35 static char cht_bsw_codec_name[16]; 36 37 /* Headset jack detection DAPM pins */ 38 static struct snd_soc_jack_pin cht_bsw_headset_pins[] = { 39 { 40 .pin = "Headset Mic", 41 .mask = SND_JACK_MICROPHONE, 42 }, 43 { 44 .pin = "Headphone", 45 .mask = SND_JACK_HEADPHONE, 46 }, 47 }; 48 49 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) 50 { 51 struct snd_soc_pcm_runtime *rtd; 52 53 list_for_each_entry(rtd, &card->rtd_list, list) { 54 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, 55 strlen(CHT_CODEC_DAI))) 56 return rtd->codec_dai; 57 } 58 return NULL; 59 } 60 61 static int platform_clock_control(struct snd_soc_dapm_widget *w, 62 struct snd_kcontrol *k, int event) 63 { 64 struct snd_soc_dapm_context *dapm = w->dapm; 65 struct snd_soc_card *card = dapm->card; 66 struct snd_soc_dai *codec_dai; 67 int ret; 68 69 codec_dai = cht_get_codec_dai(card); 70 if (!codec_dai) { 71 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); 72 return -EIO; 73 } 74 75 if (SND_SOC_DAPM_EVENT_ON(event)) { 76 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ 77 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, 78 CHT_PLAT_CLK_3_HZ, 48000 * 512); 79 if (ret < 0) { 80 dev_err(card->dev, "can't set codec pll: %d\n", ret); 81 return ret; 82 } 83 84 /* set codec sysclk source to PLL */ 85 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 86 48000 * 512, SND_SOC_CLOCK_IN); 87 if (ret < 0) { 88 dev_err(card->dev, "can't set codec sysclk: %d\n", ret); 89 return ret; 90 } 91 } else { 92 /* Set codec sysclk source to its internal clock because codec 93 * PLL will be off when idle and MCLK will also be off by ACPI 94 * when codec is runtime suspended. Codec needs clock for jack 95 * detection and button press. 96 */ 97 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK, 98 48000 * 512, SND_SOC_CLOCK_IN); 99 } 100 return 0; 101 } 102 103 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = { 104 SND_SOC_DAPM_HP("Headphone", NULL), 105 SND_SOC_DAPM_MIC("Headset Mic", NULL), 106 SND_SOC_DAPM_MIC("Int Mic", NULL), 107 SND_SOC_DAPM_SPK("Ext Spk", NULL), 108 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 109 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 110 SND_SOC_DAPM_POST_PMD), 111 }; 112 113 static const struct snd_soc_dapm_route cht_audio_map[] = { 114 {"IN1P", NULL, "Headset Mic"}, 115 {"IN1N", NULL, "Headset Mic"}, 116 {"DMIC L1", NULL, "Int Mic"}, 117 {"DMIC R1", NULL, "Int Mic"}, 118 {"Headphone", NULL, "HPOL"}, 119 {"Headphone", NULL, "HPOR"}, 120 {"Ext Spk", NULL, "SPOLP"}, 121 {"Ext Spk", NULL, "SPOLN"}, 122 {"Ext Spk", NULL, "SPORP"}, 123 {"Ext Spk", NULL, "SPORN"}, 124 {"AIF1 Playback", NULL, "ssp2 Tx"}, 125 {"ssp2 Tx", NULL, "codec_out0"}, 126 {"ssp2 Tx", NULL, "codec_out1"}, 127 {"codec_in0", NULL, "ssp2 Rx"}, 128 {"codec_in1", NULL, "ssp2 Rx"}, 129 {"ssp2 Rx", NULL, "AIF1 Capture"}, 130 {"Headphone", NULL, "Platform Clock"}, 131 {"Headset Mic", NULL, "Platform Clock"}, 132 {"Int Mic", NULL, "Platform Clock"}, 133 {"Ext Spk", NULL, "Platform Clock"}, 134 }; 135 136 static const struct snd_kcontrol_new cht_mc_controls[] = { 137 SOC_DAPM_PIN_SWITCH("Headphone"), 138 SOC_DAPM_PIN_SWITCH("Headset Mic"), 139 SOC_DAPM_PIN_SWITCH("Int Mic"), 140 SOC_DAPM_PIN_SWITCH("Ext Spk"), 141 }; 142 143 static int cht_aif1_hw_params(struct snd_pcm_substream *substream, 144 struct snd_pcm_hw_params *params) 145 { 146 struct snd_soc_pcm_runtime *rtd = substream->private_data; 147 struct snd_soc_dai *codec_dai = rtd->codec_dai; 148 int ret; 149 150 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ 151 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, 152 CHT_PLAT_CLK_3_HZ, params_rate(params) * 512); 153 if (ret < 0) { 154 dev_err(rtd->dev, "can't set codec pll: %d\n", ret); 155 return ret; 156 } 157 158 /* set codec sysclk source to PLL */ 159 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 160 params_rate(params) * 512, 161 SND_SOC_CLOCK_IN); 162 if (ret < 0) { 163 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret); 164 return ret; 165 } 166 return 0; 167 } 168 169 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime) 170 { 171 int ret; 172 struct snd_soc_dai *codec_dai = runtime->codec_dai; 173 struct snd_soc_codec *codec = codec_dai->codec; 174 175 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ 176 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); 177 if (ret < 0) { 178 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret); 179 return ret; 180 } 181 182 /* Select codec ASRC clock source to track I2S1 clock, because codec 183 * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot 184 * be supported by RT5672. Otherwise, ASRC will be disabled and cause 185 * noise. 186 */ 187 rt5670_sel_asrc_clk_src(codec, 188 RT5670_DA_STEREO_FILTER 189 | RT5670_DA_MONO_L_FILTER 190 | RT5670_DA_MONO_R_FILTER 191 | RT5670_AD_STEREO_FILTER 192 | RT5670_AD_MONO_L_FILTER 193 | RT5670_AD_MONO_R_FILTER, 194 RT5670_CLK_SEL_I2S1_ASRC); 195 196 ret = snd_soc_card_jack_new(runtime->card, "Headset", 197 SND_JACK_HEADSET | SND_JACK_BTN_0 | 198 SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset, 199 cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins)); 200 if (ret) 201 return ret; 202 203 rt5670_set_jack_detect(codec, &cht_bsw_headset); 204 return 0; 205 } 206 207 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd, 208 struct snd_pcm_hw_params *params) 209 { 210 struct snd_interval *rate = hw_param_interval(params, 211 SNDRV_PCM_HW_PARAM_RATE); 212 struct snd_interval *channels = hw_param_interval(params, 213 SNDRV_PCM_HW_PARAM_CHANNELS); 214 215 /* The DSP will covert the FE rate to 48k, stereo, 24bits */ 216 rate->min = rate->max = 48000; 217 channels->min = channels->max = 2; 218 219 /* set SSP2 to 24-bit */ 220 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); 221 return 0; 222 } 223 224 static int cht_aif1_startup(struct snd_pcm_substream *substream) 225 { 226 return snd_pcm_hw_constraint_single(substream->runtime, 227 SNDRV_PCM_HW_PARAM_RATE, 48000); 228 } 229 230 static const struct snd_soc_ops cht_aif1_ops = { 231 .startup = cht_aif1_startup, 232 }; 233 234 static const struct snd_soc_ops cht_be_ssp2_ops = { 235 .hw_params = cht_aif1_hw_params, 236 }; 237 238 static struct snd_soc_dai_link cht_dailink[] = { 239 /* Front End DAI links */ 240 [MERR_DPCM_AUDIO] = { 241 .name = "Audio Port", 242 .stream_name = "Audio", 243 .cpu_dai_name = "media-cpu-dai", 244 .codec_dai_name = "snd-soc-dummy-dai", 245 .codec_name = "snd-soc-dummy", 246 .platform_name = "sst-mfld-platform", 247 .nonatomic = true, 248 .dynamic = 1, 249 .dpcm_playback = 1, 250 .dpcm_capture = 1, 251 .ops = &cht_aif1_ops, 252 }, 253 [MERR_DPCM_DEEP_BUFFER] = { 254 .name = "Deep-Buffer Audio Port", 255 .stream_name = "Deep-Buffer Audio", 256 .cpu_dai_name = "deepbuffer-cpu-dai", 257 .codec_dai_name = "snd-soc-dummy-dai", 258 .codec_name = "snd-soc-dummy", 259 .platform_name = "sst-mfld-platform", 260 .nonatomic = true, 261 .dynamic = 1, 262 .dpcm_playback = 1, 263 .ops = &cht_aif1_ops, 264 }, 265 [MERR_DPCM_COMPR] = { 266 .name = "Compressed Port", 267 .stream_name = "Compress", 268 .cpu_dai_name = "compress-cpu-dai", 269 .codec_dai_name = "snd-soc-dummy-dai", 270 .codec_name = "snd-soc-dummy", 271 .platform_name = "sst-mfld-platform", 272 }, 273 274 /* Back End DAI links */ 275 { 276 /* SSP2 - Codec */ 277 .name = "SSP2-Codec", 278 .id = 1, 279 .cpu_dai_name = "ssp2-port", 280 .platform_name = "sst-mfld-platform", 281 .no_pcm = 1, 282 .nonatomic = true, 283 .codec_dai_name = "rt5670-aif1", 284 .codec_name = "i2c-10EC5670:00", 285 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF 286 | SND_SOC_DAIFMT_CBS_CFS, 287 .init = cht_codec_init, 288 .be_hw_params_fixup = cht_codec_fixup, 289 .dpcm_playback = 1, 290 .dpcm_capture = 1, 291 .ops = &cht_be_ssp2_ops, 292 }, 293 }; 294 295 static int cht_suspend_pre(struct snd_soc_card *card) 296 { 297 struct snd_soc_component *component; 298 299 list_for_each_entry(component, &card->component_dev_list, card_list) { 300 if (!strcmp(component->name, "i2c-10EC5670:00")) { 301 struct snd_soc_codec *codec = snd_soc_component_to_codec(component); 302 303 dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n"); 304 rt5670_jack_suspend(codec); 305 break; 306 } 307 } 308 return 0; 309 } 310 311 static int cht_resume_post(struct snd_soc_card *card) 312 { 313 struct snd_soc_component *component; 314 315 list_for_each_entry(component, &card->component_dev_list, card_list) { 316 if (!strcmp(component->name, "i2c-10EC5670:00")) { 317 struct snd_soc_codec *codec = snd_soc_component_to_codec(component); 318 319 dev_dbg(codec->dev, "enabling jack detect for resume.\n"); 320 rt5670_jack_resume(codec); 321 break; 322 } 323 } 324 325 return 0; 326 } 327 328 /* SoC card */ 329 static struct snd_soc_card snd_soc_card_cht = { 330 .name = "cherrytrailcraudio", 331 .owner = THIS_MODULE, 332 .dai_link = cht_dailink, 333 .num_links = ARRAY_SIZE(cht_dailink), 334 .dapm_widgets = cht_dapm_widgets, 335 .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets), 336 .dapm_routes = cht_audio_map, 337 .num_dapm_routes = ARRAY_SIZE(cht_audio_map), 338 .controls = cht_mc_controls, 339 .num_controls = ARRAY_SIZE(cht_mc_controls), 340 .suspend_pre = cht_suspend_pre, 341 .resume_post = cht_resume_post, 342 }; 343 344 #define RT5672_I2C_DEFAULT "i2c-10EC5670:00" 345 346 static int snd_cht_mc_probe(struct platform_device *pdev) 347 { 348 int ret_val = 0; 349 struct sst_acpi_mach *mach = pdev->dev.platform_data; 350 const char *i2c_name; 351 int i; 352 353 strcpy(cht_bsw_codec_name, RT5672_I2C_DEFAULT); 354 355 /* fixup codec name based on HID */ 356 if (mach) { 357 i2c_name = sst_acpi_find_name_from_hid(mach->id); 358 if (i2c_name) { 359 snprintf(cht_bsw_codec_name, sizeof(cht_bsw_codec_name), 360 "i2c-%s", i2c_name); 361 for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) { 362 if (!strcmp(cht_dailink[i].codec_name, 363 RT5672_I2C_DEFAULT)) { 364 cht_dailink[i].codec_name = 365 cht_bsw_codec_name; 366 break; 367 } 368 } 369 } 370 } 371 372 /* register the soc card */ 373 snd_soc_card_cht.dev = &pdev->dev; 374 ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht); 375 if (ret_val) { 376 dev_err(&pdev->dev, 377 "snd_soc_register_card failed %d\n", ret_val); 378 return ret_val; 379 } 380 platform_set_drvdata(pdev, &snd_soc_card_cht); 381 return ret_val; 382 } 383 384 static struct platform_driver snd_cht_mc_driver = { 385 .driver = { 386 .name = "cht-bsw-rt5672", 387 }, 388 .probe = snd_cht_mc_probe, 389 }; 390 391 module_platform_driver(snd_cht_mc_driver); 392 393 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); 394 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin"); 395 MODULE_LICENSE("GPL v2"); 396 MODULE_ALIAS("platform:cht-bsw-rt5672"); 397