1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ASoC machine driver for Intel Broadwell platforms with RT5650 codec 4 * 5 * Copyright 2019, The Chromium OS Authors. All rights reserved. 6 */ 7 8 #include <linux/delay.h> 9 #include <linux/gpio/consumer.h> 10 #include <linux/module.h> 11 #include <linux/platform_device.h> 12 #include <sound/core.h> 13 #include <sound/jack.h> 14 #include <sound/pcm.h> 15 #include <sound/pcm_params.h> 16 #include <sound/soc.h> 17 #include <sound/soc-acpi.h> 18 19 #include "../../codecs/rt5645.h" 20 21 struct bdw_rt5650_priv { 22 struct gpio_desc *gpio_hp_en; 23 struct snd_soc_component *component; 24 }; 25 26 static const struct snd_soc_dapm_widget bdw_rt5650_widgets[] = { 27 SND_SOC_DAPM_HP("Headphone", NULL), 28 SND_SOC_DAPM_SPK("Speaker", NULL), 29 SND_SOC_DAPM_MIC("Headset Mic", NULL), 30 SND_SOC_DAPM_MIC("DMIC Pair1", NULL), 31 SND_SOC_DAPM_MIC("DMIC Pair2", NULL), 32 }; 33 34 static const struct snd_soc_dapm_route bdw_rt5650_map[] = { 35 /* Speakers */ 36 {"Speaker", NULL, "SPOL"}, 37 {"Speaker", NULL, "SPOR"}, 38 39 /* Headset jack connectors */ 40 {"Headphone", NULL, "HPOL"}, 41 {"Headphone", NULL, "HPOR"}, 42 {"IN1P", NULL, "Headset Mic"}, 43 {"IN1N", NULL, "Headset Mic"}, 44 45 /* Digital MICs 46 * DMIC Pair1 are the two DMICs connected on the DMICN1 connector. 47 * DMIC Pair2 are the two DMICs connected on the DMICN2 connector. 48 * Facing the camera, DMIC Pair1 are on the left side, DMIC Pair2 49 * are on the right side. 50 */ 51 {"DMIC L1", NULL, "DMIC Pair1"}, 52 {"DMIC R1", NULL, "DMIC Pair1"}, 53 {"DMIC L2", NULL, "DMIC Pair2"}, 54 {"DMIC R2", NULL, "DMIC Pair2"}, 55 56 /* CODEC BE connections */ 57 {"SSP0 CODEC IN", NULL, "AIF1 Capture"}, 58 {"AIF1 Playback", NULL, "SSP0 CODEC OUT"}, 59 }; 60 61 static const struct snd_kcontrol_new bdw_rt5650_controls[] = { 62 SOC_DAPM_PIN_SWITCH("Speaker"), 63 SOC_DAPM_PIN_SWITCH("Headphone"), 64 SOC_DAPM_PIN_SWITCH("Headset Mic"), 65 SOC_DAPM_PIN_SWITCH("DMIC Pair1"), 66 SOC_DAPM_PIN_SWITCH("DMIC Pair2"), 67 }; 68 69 70 static struct snd_soc_jack headphone_jack; 71 static struct snd_soc_jack mic_jack; 72 73 static struct snd_soc_jack_pin headphone_jack_pin = { 74 .pin = "Headphone", 75 .mask = SND_JACK_HEADPHONE, 76 }; 77 78 static struct snd_soc_jack_pin mic_jack_pin = { 79 .pin = "Headset Mic", 80 .mask = SND_JACK_MICROPHONE, 81 }; 82 83 static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd, 84 struct snd_pcm_hw_params *params) 85 { 86 struct snd_interval *rate = hw_param_interval(params, 87 SNDRV_PCM_HW_PARAM_RATE); 88 struct snd_interval *chan = hw_param_interval(params, 89 SNDRV_PCM_HW_PARAM_CHANNELS); 90 91 /* The ADSP will convert the FE rate to 48k, max 4-channels */ 92 rate->min = rate->max = 48000; 93 chan->min = 2; 94 chan->max = 4; 95 96 /* set SSP0 to 24 bit */ 97 snd_mask_set_format(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), 98 SNDRV_PCM_FORMAT_S24_LE); 99 100 return 0; 101 } 102 103 static int bdw_rt5650_hw_params(struct snd_pcm_substream *substream, 104 struct snd_pcm_hw_params *params) 105 { 106 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 107 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 108 int ret; 109 110 /* Workaround: set codec PLL to 19.2MHz that PLL source is 111 * from MCLK(24MHz) to conform 2.4MHz DMIC clock. 112 */ 113 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK, 114 24000000, 19200000); 115 if (ret < 0) { 116 dev_err(rtd->dev, "can't set codec pll: %d\n", ret); 117 return ret; 118 } 119 120 /* The actual MCLK freq is 24MHz. The codec is told that MCLK is 121 * 24.576MHz to satisfy the requirement of rl6231_get_clk_info. 122 * ASRC is enabled on AD and DA filters to ensure good audio quality. 123 */ 124 ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1, 24576000, 125 SND_SOC_CLOCK_IN); 126 if (ret < 0) { 127 dev_err(rtd->dev, "can't set codec sysclk configuration\n"); 128 return ret; 129 } 130 131 return ret; 132 } 133 134 static struct snd_soc_ops bdw_rt5650_ops = { 135 .hw_params = bdw_rt5650_hw_params, 136 }; 137 138 static const unsigned int channels[] = { 139 2, 4, 140 }; 141 142 static const struct snd_pcm_hw_constraint_list constraints_channels = { 143 .count = ARRAY_SIZE(channels), 144 .list = channels, 145 .mask = 0, 146 }; 147 148 static int bdw_rt5650_fe_startup(struct snd_pcm_substream *substream) 149 { 150 struct snd_pcm_runtime *runtime = substream->runtime; 151 152 /* Board supports stereo and quad configurations for capture */ 153 if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) 154 return 0; 155 156 runtime->hw.channels_max = 4; 157 return snd_pcm_hw_constraint_list(runtime, 0, 158 SNDRV_PCM_HW_PARAM_CHANNELS, 159 &constraints_channels); 160 } 161 162 static const struct snd_soc_ops bdw_rt5650_fe_ops = { 163 .startup = bdw_rt5650_fe_startup, 164 }; 165 166 static int bdw_rt5650_init(struct snd_soc_pcm_runtime *rtd) 167 { 168 struct bdw_rt5650_priv *bdw_rt5650 = 169 snd_soc_card_get_drvdata(rtd->card); 170 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 171 struct snd_soc_component *component = codec_dai->component; 172 int ret; 173 174 /* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1. 175 * The ASRC clock source is clk_i2s1_asrc. 176 */ 177 rt5645_sel_asrc_clk_src(component, 178 RT5645_DA_STEREO_FILTER | 179 RT5645_DA_MONO_L_FILTER | 180 RT5645_DA_MONO_R_FILTER | 181 RT5645_AD_STEREO_FILTER | 182 RT5645_AD_MONO_L_FILTER | 183 RT5645_AD_MONO_R_FILTER, 184 RT5645_CLK_SEL_I2S1_ASRC); 185 186 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ 187 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); 188 189 if (ret < 0) { 190 dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret); 191 return ret; 192 } 193 194 /* Create and initialize headphone jack */ 195 if (snd_soc_card_jack_new_pins(rtd->card, "Headphone Jack", 196 SND_JACK_HEADPHONE, &headphone_jack, 197 &headphone_jack_pin, 1)) { 198 dev_err(component->dev, "Can't create headphone jack\n"); 199 } 200 201 /* Create and initialize mic jack */ 202 if (snd_soc_card_jack_new_pins(rtd->card, "Mic Jack", 203 SND_JACK_MICROPHONE, &mic_jack, &mic_jack_pin, 1)) { 204 dev_err(component->dev, "Can't create mic jack\n"); 205 } 206 207 rt5645_set_jack_detect(component, &headphone_jack, &mic_jack, NULL); 208 209 bdw_rt5650->component = component; 210 211 return 0; 212 } 213 214 /* broadwell digital audio interface glue - connects codec <--> CPU */ 215 SND_SOC_DAILINK_DEF(dummy, 216 DAILINK_COMP_ARRAY(COMP_DUMMY())); 217 218 SND_SOC_DAILINK_DEF(fe, 219 DAILINK_COMP_ARRAY(COMP_CPU("System Pin"))); 220 221 SND_SOC_DAILINK_DEF(platform, 222 DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio"))); 223 224 SND_SOC_DAILINK_DEF(be, 225 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5650:00", "rt5645-aif1"))); 226 227 SND_SOC_DAILINK_DEF(ssp0_port, 228 DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port"))); 229 230 static struct snd_soc_dai_link bdw_rt5650_dais[] = { 231 /* Front End DAI links */ 232 { 233 .name = "System PCM", 234 .stream_name = "System Playback", 235 .nonatomic = 1, 236 .dynamic = 1, 237 .ops = &bdw_rt5650_fe_ops, 238 .trigger = { 239 SND_SOC_DPCM_TRIGGER_POST, 240 SND_SOC_DPCM_TRIGGER_POST 241 }, 242 .dpcm_playback = 1, 243 .dpcm_capture = 1, 244 SND_SOC_DAILINK_REG(fe, dummy, platform), 245 }, 246 247 /* Back End DAI links */ 248 { 249 /* SSP0 - Codec */ 250 .name = "Codec", 251 .id = 0, 252 .nonatomic = 1, 253 .no_pcm = 1, 254 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | 255 SND_SOC_DAIFMT_CBC_CFC, 256 .ignore_pmdown_time = 1, 257 .be_hw_params_fixup = broadwell_ssp0_fixup, 258 .ops = &bdw_rt5650_ops, 259 .dpcm_playback = 1, 260 .dpcm_capture = 1, 261 .init = bdw_rt5650_init, 262 SND_SOC_DAILINK_REG(ssp0_port, be, platform), 263 }, 264 }; 265 266 /* use space before codec name to simplify card ID, and simplify driver name */ 267 #define SOF_CARD_NAME "bdw rt5650" /* card name will be 'sof-bdw rt5650' */ 268 #define SOF_DRIVER_NAME "SOF" 269 270 #define CARD_NAME "bdw-rt5650" 271 #define DRIVER_NAME NULL /* card name will be used for driver name */ 272 273 /* ASoC machine driver for Broadwell DSP + RT5650 */ 274 static struct snd_soc_card bdw_rt5650_card = { 275 .name = CARD_NAME, 276 .driver_name = DRIVER_NAME, 277 .owner = THIS_MODULE, 278 .dai_link = bdw_rt5650_dais, 279 .num_links = ARRAY_SIZE(bdw_rt5650_dais), 280 .dapm_widgets = bdw_rt5650_widgets, 281 .num_dapm_widgets = ARRAY_SIZE(bdw_rt5650_widgets), 282 .dapm_routes = bdw_rt5650_map, 283 .num_dapm_routes = ARRAY_SIZE(bdw_rt5650_map), 284 .controls = bdw_rt5650_controls, 285 .num_controls = ARRAY_SIZE(bdw_rt5650_controls), 286 .fully_routed = true, 287 }; 288 289 static int bdw_rt5650_probe(struct platform_device *pdev) 290 { 291 struct bdw_rt5650_priv *bdw_rt5650; 292 struct snd_soc_acpi_mach *mach; 293 int ret; 294 295 bdw_rt5650_card.dev = &pdev->dev; 296 297 /* Allocate driver private struct */ 298 bdw_rt5650 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5650_priv), 299 GFP_KERNEL); 300 if (!bdw_rt5650) 301 return -ENOMEM; 302 303 /* override platform name, if required */ 304 mach = pdev->dev.platform_data; 305 ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt5650_card, 306 mach->mach_params.platform); 307 308 if (ret) 309 return ret; 310 311 /* set card and driver name */ 312 if (snd_soc_acpi_sof_parent(&pdev->dev)) { 313 bdw_rt5650_card.name = SOF_CARD_NAME; 314 bdw_rt5650_card.driver_name = SOF_DRIVER_NAME; 315 } else { 316 bdw_rt5650_card.name = CARD_NAME; 317 bdw_rt5650_card.driver_name = DRIVER_NAME; 318 } 319 320 snd_soc_card_set_drvdata(&bdw_rt5650_card, bdw_rt5650); 321 322 return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5650_card); 323 } 324 325 static struct platform_driver bdw_rt5650_audio = { 326 .probe = bdw_rt5650_probe, 327 .driver = { 328 .name = "bdw-rt5650", 329 .pm = &snd_soc_pm_ops, 330 }, 331 }; 332 333 module_platform_driver(bdw_rt5650_audio) 334 335 /* Module information */ 336 MODULE_AUTHOR("Ben Zhang <benzh@chromium.org>"); 337 MODULE_DESCRIPTION("Intel Broadwell RT5650 machine driver"); 338 MODULE_LICENSE("GPL v2"); 339 MODULE_ALIAS("platform:bdw-rt5650"); 340