1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * mt2701-cs42448.c -- MT2701 CS42448 ALSA SoC machine driver 4 * 5 * Copyright (c) 2016 MediaTek Inc. 6 * Author: Ir Lian <ir.lian@mediatek.com> 7 * Garlic Tseng <garlic.tseng@mediatek.com> 8 */ 9 10 #include <linux/module.h> 11 #include <sound/soc.h> 12 #include <linux/delay.h> 13 #include <linux/gpio.h> 14 #include <linux/pinctrl/consumer.h> 15 #include <linux/of_gpio.h> 16 17 #include "mt2701-afe-common.h" 18 19 struct mt2701_cs42448_private { 20 int i2s1_in_mux; 21 int i2s1_in_mux_gpio_sel_1; 22 int i2s1_in_mux_gpio_sel_2; 23 }; 24 25 static const char * const i2sin_mux_switch_text[] = { 26 "ADC_SDOUT2", 27 "ADC_SDOUT3", 28 "I2S_IN_1", 29 "I2S_IN_2", 30 }; 31 32 static const struct soc_enum i2sin_mux_enum = 33 SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text); 34 35 static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol, 36 struct snd_ctl_elem_value *ucontrol) 37 { 38 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); 39 struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card); 40 41 ucontrol->value.integer.value[0] = priv->i2s1_in_mux; 42 return 0; 43 } 44 45 static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol, 46 struct snd_ctl_elem_value *ucontrol) 47 { 48 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); 49 struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card); 50 51 if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux) 52 return 0; 53 54 switch (ucontrol->value.integer.value[0]) { 55 case 0: 56 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0); 57 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0); 58 break; 59 case 1: 60 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1); 61 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0); 62 break; 63 case 2: 64 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0); 65 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1); 66 break; 67 case 3: 68 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1); 69 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1); 70 break; 71 default: 72 dev_warn(card->dev, "%s invalid setting\n", __func__); 73 } 74 75 priv->i2s1_in_mux = ucontrol->value.integer.value[0]; 76 return 0; 77 } 78 79 static const struct snd_soc_dapm_widget 80 mt2701_cs42448_asoc_card_dapm_widgets[] = { 81 SND_SOC_DAPM_LINE("Line Out Jack", NULL), 82 SND_SOC_DAPM_MIC("AMIC", NULL), 83 SND_SOC_DAPM_LINE("Tuner In", NULL), 84 SND_SOC_DAPM_LINE("Satellite Tuner In", NULL), 85 SND_SOC_DAPM_LINE("AUX In", NULL), 86 }; 87 88 static const struct snd_kcontrol_new mt2701_cs42448_controls[] = { 89 SOC_DAPM_PIN_SWITCH("Line Out Jack"), 90 SOC_DAPM_PIN_SWITCH("AMIC"), 91 SOC_DAPM_PIN_SWITCH("Tuner In"), 92 SOC_DAPM_PIN_SWITCH("Satellite Tuner In"), 93 SOC_DAPM_PIN_SWITCH("AUX In"), 94 SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum, 95 mt2701_cs42448_i2sin1_mux_get, 96 mt2701_cs42448_i2sin1_mux_set), 97 }; 98 99 static const unsigned int mt2701_cs42448_sampling_rates[] = {48000}; 100 101 static const struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = { 102 .count = ARRAY_SIZE(mt2701_cs42448_sampling_rates), 103 .list = mt2701_cs42448_sampling_rates, 104 .mask = 0, 105 }; 106 107 static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream) 108 { 109 int err; 110 111 err = snd_pcm_hw_constraint_list(substream->runtime, 0, 112 SNDRV_PCM_HW_PARAM_RATE, 113 &mt2701_cs42448_constraints_rates); 114 if (err < 0) { 115 dev_err(substream->pcm->card->dev, 116 "%s snd_pcm_hw_constraint_list failed: 0x%x\n", 117 __func__, err); 118 return err; 119 } 120 return 0; 121 } 122 123 static const struct snd_soc_ops mt2701_cs42448_48k_fe_ops = { 124 .startup = mt2701_cs42448_fe_ops_startup, 125 }; 126 127 static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream, 128 struct snd_pcm_hw_params *params) 129 { 130 struct snd_soc_pcm_runtime *rtd = substream->private_data; 131 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 132 struct snd_soc_dai *codec_dai = rtd->codec_dai; 133 unsigned int mclk_rate; 134 unsigned int rate = params_rate(params); 135 unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4; 136 unsigned int div_bck_over_lrck = 64; 137 138 mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck; 139 140 /* mt2701 mclk */ 141 snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT); 142 143 /* codec mclk */ 144 snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN); 145 146 return 0; 147 } 148 149 static struct snd_soc_ops mt2701_cs42448_be_ops = { 150 .hw_params = mt2701_cs42448_be_ops_hw_params 151 }; 152 153 enum { 154 DAI_LINK_FE_MULTI_CH_OUT, 155 DAI_LINK_FE_PCM0_IN, 156 DAI_LINK_FE_PCM1_IN, 157 DAI_LINK_FE_BT_OUT, 158 DAI_LINK_FE_BT_IN, 159 DAI_LINK_BE_I2S0, 160 DAI_LINK_BE_I2S1, 161 DAI_LINK_BE_I2S2, 162 DAI_LINK_BE_I2S3, 163 DAI_LINK_BE_MRG_BT, 164 }; 165 166 static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = { 167 /* FE */ 168 [DAI_LINK_FE_MULTI_CH_OUT] = { 169 .name = "mt2701-cs42448-multi-ch-out", 170 .stream_name = "mt2701-cs42448-multi-ch-out", 171 .cpu_dai_name = "PCM_multi", 172 .codec_name = "snd-soc-dummy", 173 .codec_dai_name = "snd-soc-dummy-dai", 174 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 175 SND_SOC_DPCM_TRIGGER_POST}, 176 .ops = &mt2701_cs42448_48k_fe_ops, 177 .dynamic = 1, 178 .dpcm_playback = 1, 179 }, 180 [DAI_LINK_FE_PCM0_IN] = { 181 .name = "mt2701-cs42448-pcm0", 182 .stream_name = "mt2701-cs42448-pcm0-data-UL", 183 .cpu_dai_name = "PCM0", 184 .codec_name = "snd-soc-dummy", 185 .codec_dai_name = "snd-soc-dummy-dai", 186 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 187 SND_SOC_DPCM_TRIGGER_POST}, 188 .ops = &mt2701_cs42448_48k_fe_ops, 189 .dynamic = 1, 190 .dpcm_capture = 1, 191 }, 192 [DAI_LINK_FE_PCM1_IN] = { 193 .name = "mt2701-cs42448-pcm1-data-UL", 194 .stream_name = "mt2701-cs42448-pcm1-data-UL", 195 .cpu_dai_name = "PCM1", 196 .codec_name = "snd-soc-dummy", 197 .codec_dai_name = "snd-soc-dummy-dai", 198 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 199 SND_SOC_DPCM_TRIGGER_POST}, 200 .ops = &mt2701_cs42448_48k_fe_ops, 201 .dynamic = 1, 202 .dpcm_capture = 1, 203 }, 204 [DAI_LINK_FE_BT_OUT] = { 205 .name = "mt2701-cs42448-pcm-BT-out", 206 .stream_name = "mt2701-cs42448-pcm-BT", 207 .cpu_dai_name = "PCM_BT_DL", 208 .codec_name = "snd-soc-dummy", 209 .codec_dai_name = "snd-soc-dummy-dai", 210 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 211 SND_SOC_DPCM_TRIGGER_POST}, 212 .dynamic = 1, 213 .dpcm_playback = 1, 214 }, 215 [DAI_LINK_FE_BT_IN] = { 216 .name = "mt2701-cs42448-pcm-BT-in", 217 .stream_name = "mt2701-cs42448-pcm-BT", 218 .cpu_dai_name = "PCM_BT_UL", 219 .codec_name = "snd-soc-dummy", 220 .codec_dai_name = "snd-soc-dummy-dai", 221 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 222 SND_SOC_DPCM_TRIGGER_POST}, 223 .dynamic = 1, 224 .dpcm_capture = 1, 225 }, 226 /* BE */ 227 [DAI_LINK_BE_I2S0] = { 228 .name = "mt2701-cs42448-I2S0", 229 .cpu_dai_name = "I2S0", 230 .no_pcm = 1, 231 .codec_dai_name = "cs42448", 232 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 233 | SND_SOC_DAIFMT_GATED, 234 .ops = &mt2701_cs42448_be_ops, 235 .dpcm_playback = 1, 236 .dpcm_capture = 1, 237 }, 238 [DAI_LINK_BE_I2S1] = { 239 .name = "mt2701-cs42448-I2S1", 240 .cpu_dai_name = "I2S1", 241 .no_pcm = 1, 242 .codec_dai_name = "cs42448", 243 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 244 | SND_SOC_DAIFMT_GATED, 245 .ops = &mt2701_cs42448_be_ops, 246 .dpcm_playback = 1, 247 .dpcm_capture = 1, 248 }, 249 [DAI_LINK_BE_I2S2] = { 250 .name = "mt2701-cs42448-I2S2", 251 .cpu_dai_name = "I2S2", 252 .no_pcm = 1, 253 .codec_dai_name = "cs42448", 254 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 255 | SND_SOC_DAIFMT_GATED, 256 .ops = &mt2701_cs42448_be_ops, 257 .dpcm_playback = 1, 258 .dpcm_capture = 1, 259 }, 260 [DAI_LINK_BE_I2S3] = { 261 .name = "mt2701-cs42448-I2S3", 262 .cpu_dai_name = "I2S3", 263 .no_pcm = 1, 264 .codec_dai_name = "cs42448", 265 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 266 | SND_SOC_DAIFMT_GATED, 267 .ops = &mt2701_cs42448_be_ops, 268 .dpcm_playback = 1, 269 .dpcm_capture = 1, 270 }, 271 [DAI_LINK_BE_MRG_BT] = { 272 .name = "mt2701-cs42448-MRG-BT", 273 .cpu_dai_name = "MRG BT", 274 .no_pcm = 1, 275 .codec_dai_name = "bt-sco-pcm-wb", 276 .dpcm_playback = 1, 277 .dpcm_capture = 1, 278 }, 279 }; 280 281 static struct snd_soc_card mt2701_cs42448_soc_card = { 282 .name = "mt2701-cs42448", 283 .owner = THIS_MODULE, 284 .dai_link = mt2701_cs42448_dai_links, 285 .num_links = ARRAY_SIZE(mt2701_cs42448_dai_links), 286 .controls = mt2701_cs42448_controls, 287 .num_controls = ARRAY_SIZE(mt2701_cs42448_controls), 288 .dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets, 289 .num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets), 290 }; 291 292 static int mt2701_cs42448_machine_probe(struct platform_device *pdev) 293 { 294 struct snd_soc_card *card = &mt2701_cs42448_soc_card; 295 int ret; 296 int i; 297 struct device_node *platform_node, *codec_node, *codec_node_bt_mrg; 298 struct mt2701_cs42448_private *priv = 299 devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private), 300 GFP_KERNEL); 301 struct device *dev = &pdev->dev; 302 303 if (!priv) 304 return -ENOMEM; 305 306 platform_node = of_parse_phandle(pdev->dev.of_node, 307 "mediatek,platform", 0); 308 if (!platform_node) { 309 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 310 return -EINVAL; 311 } 312 for (i = 0; i < card->num_links; i++) { 313 if (mt2701_cs42448_dai_links[i].platform_name) 314 continue; 315 mt2701_cs42448_dai_links[i].platform_of_node = platform_node; 316 } 317 318 card->dev = dev; 319 320 codec_node = of_parse_phandle(pdev->dev.of_node, 321 "mediatek,audio-codec", 0); 322 if (!codec_node) { 323 dev_err(&pdev->dev, 324 "Property 'audio-codec' missing or invalid\n"); 325 return -EINVAL; 326 } 327 for (i = 0; i < card->num_links; i++) { 328 if (mt2701_cs42448_dai_links[i].codec_name) 329 continue; 330 mt2701_cs42448_dai_links[i].codec_of_node = codec_node; 331 } 332 333 codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node, 334 "mediatek,audio-codec-bt-mrg", 0); 335 if (!codec_node_bt_mrg) { 336 dev_err(&pdev->dev, 337 "Property 'audio-codec-bt-mrg' missing or invalid\n"); 338 return -EINVAL; 339 } 340 mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codec_of_node 341 = codec_node_bt_mrg; 342 343 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 344 if (ret) { 345 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); 346 return ret; 347 } 348 349 priv->i2s1_in_mux_gpio_sel_1 = 350 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0); 351 if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) { 352 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1, 353 "i2s1_in_mux_gpio_sel_1"); 354 if (ret) 355 dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n", 356 __func__, ret); 357 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0); 358 } 359 360 priv->i2s1_in_mux_gpio_sel_2 = 361 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0); 362 if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) { 363 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2, 364 "i2s1_in_mux_gpio_sel_2"); 365 if (ret) 366 dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n", 367 __func__, ret); 368 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0); 369 } 370 snd_soc_card_set_drvdata(card, priv); 371 372 ret = devm_snd_soc_register_card(&pdev->dev, card); 373 374 if (ret) 375 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 376 __func__, ret); 377 return ret; 378 } 379 380 #ifdef CONFIG_OF 381 static const struct of_device_id mt2701_cs42448_machine_dt_match[] = { 382 {.compatible = "mediatek,mt2701-cs42448-machine",}, 383 {} 384 }; 385 #endif 386 387 static struct platform_driver mt2701_cs42448_machine = { 388 .driver = { 389 .name = "mt2701-cs42448", 390 #ifdef CONFIG_OF 391 .of_match_table = mt2701_cs42448_machine_dt_match, 392 #endif 393 }, 394 .probe = mt2701_cs42448_machine_probe, 395 }; 396 397 module_platform_driver(mt2701_cs42448_machine); 398 399 /* Module information */ 400 MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver"); 401 MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>"); 402 MODULE_LICENSE("GPL v2"); 403 MODULE_ALIAS("mt2701 cs42448 soc card"); 404