1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright (c) 2020, The Linux Foundation. All rights reserved. 4 // 5 // sc7180.c -- ALSA SoC Machine driver for SC7180 6 7 #include <dt-bindings/sound/sc7180-lpass.h> 8 #include <linux/gpio.h> 9 #include <linux/gpio/consumer.h> 10 #include <linux/module.h> 11 #include <linux/of_device.h> 12 #include <linux/platform_device.h> 13 #include <sound/core.h> 14 #include <sound/jack.h> 15 #include <sound/pcm.h> 16 #include <sound/soc.h> 17 #include <uapi/linux/input-event-codes.h> 18 19 #include "../codecs/rt5682.h" 20 #include "../codecs/rt5682s.h" 21 #include "common.h" 22 #include "lpass.h" 23 24 #define DEFAULT_MCLK_RATE 19200000 25 #define RT5682_PLL1_FREQ (48000 * 512) 26 27 #define DRIVER_NAME "SC7180" 28 29 struct sc7180_snd_data { 30 struct snd_soc_card card; 31 u32 pri_mi2s_clk_count; 32 struct snd_soc_jack hs_jack; 33 struct snd_soc_jack hdmi_jack; 34 struct gpio_desc *dmic_sel; 35 int dmic_switch; 36 }; 37 38 static void sc7180_jack_free(struct snd_jack *jack) 39 { 40 struct snd_soc_component *component = jack->private_data; 41 42 snd_soc_component_set_jack(component, NULL, NULL); 43 } 44 45 static int sc7180_headset_init(struct snd_soc_pcm_runtime *rtd) 46 { 47 struct snd_soc_card *card = rtd->card; 48 struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card); 49 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 50 struct snd_soc_component *component = codec_dai->component; 51 struct snd_jack *jack; 52 int rval; 53 54 rval = snd_soc_card_jack_new( 55 card, "Headset Jack", 56 SND_JACK_HEADSET | 57 SND_JACK_HEADPHONE | 58 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 59 SND_JACK_BTN_2 | SND_JACK_BTN_3, 60 &pdata->hs_jack); 61 62 if (rval < 0) { 63 dev_err(card->dev, "Unable to add Headset Jack\n"); 64 return rval; 65 } 66 67 jack = pdata->hs_jack.jack; 68 69 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 70 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); 71 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); 72 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); 73 74 jack->private_data = component; 75 jack->private_free = sc7180_jack_free; 76 77 return snd_soc_component_set_jack(component, &pdata->hs_jack, NULL); 78 } 79 80 static int sc7180_hdmi_init(struct snd_soc_pcm_runtime *rtd) 81 { 82 struct snd_soc_card *card = rtd->card; 83 struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card); 84 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 85 struct snd_soc_component *component = codec_dai->component; 86 struct snd_jack *jack; 87 int rval; 88 89 rval = snd_soc_card_jack_new( 90 card, "HDMI Jack", 91 SND_JACK_LINEOUT, 92 &pdata->hdmi_jack); 93 94 if (rval < 0) { 95 dev_err(card->dev, "Unable to add HDMI Jack\n"); 96 return rval; 97 } 98 99 jack = pdata->hdmi_jack.jack; 100 jack->private_data = component; 101 jack->private_free = sc7180_jack_free; 102 103 return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL); 104 } 105 106 static int sc7180_init(struct snd_soc_pcm_runtime *rtd) 107 { 108 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 109 110 switch (cpu_dai->id) { 111 case MI2S_PRIMARY: 112 return sc7180_headset_init(rtd); 113 case MI2S_SECONDARY: 114 return 0; 115 case LPASS_DP_RX: 116 return sc7180_hdmi_init(rtd); 117 default: 118 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, 119 cpu_dai->id); 120 return -EINVAL; 121 } 122 return 0; 123 } 124 125 static int sc7180_snd_startup(struct snd_pcm_substream *substream) 126 { 127 struct snd_soc_pcm_runtime *rtd = substream->private_data; 128 struct snd_soc_card *card = rtd->card; 129 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); 130 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 131 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 132 int pll_id, pll_source, pll_in, pll_out, clk_id, ret; 133 134 if (!strcmp(codec_dai->name, "rt5682-aif1")) { 135 pll_source = RT5682_PLL1_S_MCLK; 136 pll_id = 0; 137 clk_id = RT5682_SCLK_S_PLL1; 138 pll_out = RT5682_PLL1_FREQ; 139 pll_in = DEFAULT_MCLK_RATE; 140 } else if (!strcmp(codec_dai->name, "rt5682s-aif1")) { 141 pll_source = RT5682S_PLL_S_MCLK; 142 pll_id = RT5682S_PLL2; 143 clk_id = RT5682S_SCLK_S_PLL2; 144 pll_out = RT5682_PLL1_FREQ; 145 pll_in = DEFAULT_MCLK_RATE; 146 } 147 148 switch (cpu_dai->id) { 149 case MI2S_PRIMARY: 150 if (++data->pri_mi2s_clk_count == 1) { 151 snd_soc_dai_set_sysclk(cpu_dai, 152 LPASS_MCLK0, 153 DEFAULT_MCLK_RATE, 154 SNDRV_PCM_STREAM_PLAYBACK); 155 } 156 157 snd_soc_dai_set_fmt(codec_dai, 158 SND_SOC_DAIFMT_CBS_CFS | 159 SND_SOC_DAIFMT_NB_NF | 160 SND_SOC_DAIFMT_I2S); 161 162 /* Configure PLL1 for codec */ 163 ret = snd_soc_dai_set_pll(codec_dai, pll_id, pll_source, 164 pll_in, pll_out); 165 if (ret) { 166 dev_err(rtd->dev, "can't set codec pll: %d\n", ret); 167 return ret; 168 } 169 170 /* Configure sysclk for codec */ 171 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, pll_out, 172 SND_SOC_CLOCK_IN); 173 if (ret) 174 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", 175 ret); 176 177 break; 178 case MI2S_SECONDARY: 179 break; 180 case LPASS_DP_RX: 181 break; 182 default: 183 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, 184 cpu_dai->id); 185 return -EINVAL; 186 } 187 return 0; 188 } 189 190 static int dmic_get(struct snd_kcontrol *kcontrol, 191 struct snd_ctl_elem_value *ucontrol) 192 { 193 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); 194 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card); 195 196 ucontrol->value.integer.value[0] = data->dmic_switch; 197 return 0; 198 } 199 200 static int dmic_set(struct snd_kcontrol *kcontrol, 201 struct snd_ctl_elem_value *ucontrol) 202 { 203 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); 204 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card); 205 206 data->dmic_switch = ucontrol->value.integer.value[0]; 207 gpiod_set_value(data->dmic_sel, data->dmic_switch); 208 return 0; 209 } 210 211 static void sc7180_snd_shutdown(struct snd_pcm_substream *substream) 212 { 213 struct snd_soc_pcm_runtime *rtd = substream->private_data; 214 struct snd_soc_card *card = rtd->card; 215 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); 216 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 217 218 switch (cpu_dai->id) { 219 case MI2S_PRIMARY: 220 if (--data->pri_mi2s_clk_count == 0) { 221 snd_soc_dai_set_sysclk(cpu_dai, 222 LPASS_MCLK0, 223 0, 224 SNDRV_PCM_STREAM_PLAYBACK); 225 } 226 break; 227 case MI2S_SECONDARY: 228 break; 229 case LPASS_DP_RX: 230 break; 231 default: 232 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, 233 cpu_dai->id); 234 break; 235 } 236 } 237 238 static int sc7180_adau7002_init(struct snd_soc_pcm_runtime *rtd) 239 { 240 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 241 242 switch (cpu_dai->id) { 243 case MI2S_PRIMARY: 244 return 0; 245 case MI2S_SECONDARY: 246 return 0; 247 case LPASS_DP_RX: 248 return sc7180_hdmi_init(rtd); 249 default: 250 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, 251 cpu_dai->id); 252 return -EINVAL; 253 } 254 return 0; 255 } 256 257 static int sc7180_adau7002_snd_startup(struct snd_pcm_substream *substream) 258 { 259 struct snd_soc_pcm_runtime *rtd = substream->private_data; 260 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 261 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 262 struct snd_pcm_runtime *runtime = substream->runtime; 263 264 switch (cpu_dai->id) { 265 case MI2S_PRIMARY: 266 snd_soc_dai_set_fmt(codec_dai, 267 SND_SOC_DAIFMT_CBS_CFS | 268 SND_SOC_DAIFMT_NB_NF | 269 SND_SOC_DAIFMT_I2S); 270 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; 271 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 32); 272 273 break; 274 case MI2S_SECONDARY: 275 break; 276 case LPASS_DP_RX: 277 break; 278 default: 279 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, 280 cpu_dai->id); 281 return -EINVAL; 282 } 283 return 0; 284 } 285 286 static const struct snd_soc_ops sc7180_ops = { 287 .startup = sc7180_snd_startup, 288 .shutdown = sc7180_snd_shutdown, 289 }; 290 291 static const struct snd_soc_ops sc7180_adau7002_ops = { 292 .startup = sc7180_adau7002_snd_startup, 293 }; 294 295 static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = { 296 SND_SOC_DAPM_HP("Headphone Jack", NULL), 297 SND_SOC_DAPM_MIC("Headset Mic", NULL), 298 }; 299 300 static const struct snd_soc_dapm_widget sc7180_adau7002_snd_widgets[] = { 301 SND_SOC_DAPM_MIC("DMIC", NULL), 302 }; 303 304 static const char * const dmic_mux_text[] = { 305 "Front Mic", 306 "Rear Mic", 307 }; 308 309 static SOC_ENUM_SINGLE_DECL(sc7180_dmic_enum, 310 SND_SOC_NOPM, 0, dmic_mux_text); 311 312 static const struct snd_kcontrol_new sc7180_dmic_mux_control = 313 SOC_DAPM_ENUM_EXT("DMIC Select Mux", sc7180_dmic_enum, 314 dmic_get, dmic_set); 315 316 static const struct snd_soc_dapm_widget sc7180_snd_dual_mic_widgets[] = { 317 SND_SOC_DAPM_HP("Headphone Jack", NULL), 318 SND_SOC_DAPM_MIC("Headset Mic", NULL), 319 SND_SOC_DAPM_MIC("DMIC", NULL), 320 SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0, &sc7180_dmic_mux_control), 321 }; 322 323 static const struct snd_soc_dapm_route sc7180_snd_dual_mic_audio_route[] = { 324 {"Dmic Mux", "Front Mic", "DMIC"}, 325 {"Dmic Mux", "Rear Mic", "DMIC"}, 326 }; 327 328 static int sc7180_snd_platform_probe(struct platform_device *pdev) 329 { 330 struct snd_soc_card *card; 331 struct sc7180_snd_data *data; 332 struct device *dev = &pdev->dev; 333 struct snd_soc_dai_link *link; 334 int ret; 335 int i; 336 bool no_headphone = false; 337 338 /* Allocate the private data */ 339 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 340 if (!data) 341 return -ENOMEM; 342 343 card = &data->card; 344 snd_soc_card_set_drvdata(card, data); 345 346 card->owner = THIS_MODULE; 347 card->driver_name = DRIVER_NAME; 348 card->dev = dev; 349 card->dapm_widgets = sc7180_snd_widgets; 350 card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets); 351 352 if (of_property_read_bool(dev->of_node, "dmic-gpios")) { 353 card->dapm_widgets = sc7180_snd_dual_mic_widgets, 354 card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_dual_mic_widgets), 355 card->dapm_routes = sc7180_snd_dual_mic_audio_route, 356 card->num_dapm_routes = ARRAY_SIZE(sc7180_snd_dual_mic_audio_route), 357 data->dmic_sel = devm_gpiod_get(&pdev->dev, "dmic", GPIOD_OUT_LOW); 358 if (IS_ERR(data->dmic_sel)) { 359 dev_err(&pdev->dev, "DMIC gpio failed err=%ld\n", PTR_ERR(data->dmic_sel)); 360 return PTR_ERR(data->dmic_sel); 361 } 362 } 363 364 if (of_device_is_compatible(dev->of_node, "google,sc7180-coachz")) { 365 no_headphone = true; 366 card->dapm_widgets = sc7180_adau7002_snd_widgets; 367 card->num_dapm_widgets = ARRAY_SIZE(sc7180_adau7002_snd_widgets); 368 } 369 370 ret = qcom_snd_parse_of(card); 371 if (ret) 372 return ret; 373 374 for_each_card_prelinks(card, i, link) { 375 if (no_headphone) { 376 link->ops = &sc7180_adau7002_ops; 377 link->init = sc7180_adau7002_init; 378 } else { 379 link->ops = &sc7180_ops; 380 link->init = sc7180_init; 381 } 382 } 383 384 return devm_snd_soc_register_card(dev, card); 385 } 386 387 static const struct of_device_id sc7180_snd_device_id[] = { 388 {.compatible = "google,sc7180-trogdor"}, 389 {.compatible = "google,sc7180-coachz"}, 390 {}, 391 }; 392 MODULE_DEVICE_TABLE(of, sc7180_snd_device_id); 393 394 static struct platform_driver sc7180_snd_driver = { 395 .probe = sc7180_snd_platform_probe, 396 .driver = { 397 .name = "msm-snd-sc7180", 398 .of_match_table = sc7180_snd_device_id, 399 .pm = &snd_soc_pm_ops, 400 }, 401 }; 402 module_platform_driver(sc7180_snd_driver); 403 404 MODULE_DESCRIPTION("sc7180 ASoC Machine Driver"); 405 MODULE_LICENSE("GPL v2"); 406