1 /* 2 * mt2701-cs42448.c -- MT2701 CS42448 ALSA SoC machine driver 3 * 4 * Copyright (c) 2016 MediaTek Inc. 5 * Author: Ir Lian <ir.lian@mediatek.com> 6 * Garlic Tseng <garlic.tseng@mediatek.com> 7 * 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 version 2 and 11 * only version 2 as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19 #include <linux/module.h> 20 #include <sound/soc.h> 21 #include <linux/delay.h> 22 #include <linux/gpio.h> 23 #include <linux/pinctrl/consumer.h> 24 #include <linux/of_gpio.h> 25 26 #include "mt2701-afe-common.h" 27 28 struct mt2701_cs42448_private { 29 int i2s1_in_mux; 30 int i2s1_in_mux_gpio_sel_1; 31 int i2s1_in_mux_gpio_sel_2; 32 }; 33 34 static const char * const i2sin_mux_switch_text[] = { 35 "ADC_SDOUT2", 36 "ADC_SDOUT3", 37 "I2S_IN_1", 38 "I2S_IN_2", 39 }; 40 41 static const struct soc_enum i2sin_mux_enum = 42 SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text); 43 44 static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol, 45 struct snd_ctl_elem_value *ucontrol) 46 { 47 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); 48 struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card); 49 50 ucontrol->value.integer.value[0] = priv->i2s1_in_mux; 51 return 0; 52 } 53 54 static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol, 55 struct snd_ctl_elem_value *ucontrol) 56 { 57 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); 58 struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card); 59 60 if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux) 61 return 0; 62 63 switch (ucontrol->value.integer.value[0]) { 64 case 0: 65 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0); 66 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0); 67 break; 68 case 1: 69 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1); 70 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0); 71 break; 72 case 2: 73 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0); 74 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1); 75 break; 76 case 3: 77 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1); 78 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1); 79 break; 80 default: 81 dev_warn(card->dev, "%s invalid setting\n", __func__); 82 } 83 84 priv->i2s1_in_mux = ucontrol->value.integer.value[0]; 85 return 0; 86 } 87 88 static const struct snd_soc_dapm_widget 89 mt2701_cs42448_asoc_card_dapm_widgets[] = { 90 SND_SOC_DAPM_LINE("Line Out Jack", NULL), 91 SND_SOC_DAPM_MIC("AMIC", NULL), 92 SND_SOC_DAPM_LINE("Tuner In", NULL), 93 SND_SOC_DAPM_LINE("Satellite Tuner In", NULL), 94 SND_SOC_DAPM_LINE("AUX In", NULL), 95 }; 96 97 static const struct snd_kcontrol_new mt2701_cs42448_controls[] = { 98 SOC_DAPM_PIN_SWITCH("Line Out Jack"), 99 SOC_DAPM_PIN_SWITCH("AMIC"), 100 SOC_DAPM_PIN_SWITCH("Tuner In"), 101 SOC_DAPM_PIN_SWITCH("Satellite Tuner In"), 102 SOC_DAPM_PIN_SWITCH("AUX In"), 103 SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum, 104 mt2701_cs42448_i2sin1_mux_get, 105 mt2701_cs42448_i2sin1_mux_set), 106 }; 107 108 static const unsigned int mt2701_cs42448_sampling_rates[] = {48000}; 109 110 static struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = { 111 .count = ARRAY_SIZE(mt2701_cs42448_sampling_rates), 112 .list = mt2701_cs42448_sampling_rates, 113 .mask = 0, 114 }; 115 116 static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream) 117 { 118 int err; 119 120 err = snd_pcm_hw_constraint_list(substream->runtime, 0, 121 SNDRV_PCM_HW_PARAM_RATE, 122 &mt2701_cs42448_constraints_rates); 123 if (err < 0) { 124 dev_err(substream->pcm->card->dev, 125 "%s snd_pcm_hw_constraint_list failed: 0x%x\n", 126 __func__, err); 127 return err; 128 } 129 return 0; 130 } 131 132 static struct snd_soc_ops mt2701_cs42448_48k_fe_ops = { 133 .startup = mt2701_cs42448_fe_ops_startup, 134 }; 135 136 static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream, 137 struct snd_pcm_hw_params *params) 138 { 139 struct snd_soc_pcm_runtime *rtd = substream->private_data; 140 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 141 struct snd_soc_dai *codec_dai = rtd->codec_dai; 142 unsigned int mclk_rate; 143 unsigned int rate = params_rate(params); 144 unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4; 145 unsigned int div_bck_over_lrck = 64; 146 147 mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck; 148 149 /* mt2701 mclk */ 150 snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT); 151 152 /* codec mclk */ 153 snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN); 154 155 return 0; 156 } 157 158 static struct snd_soc_ops mt2701_cs42448_be_ops = { 159 .hw_params = mt2701_cs42448_be_ops_hw_params 160 }; 161 162 enum { 163 DAI_LINK_FE_MULTI_CH_OUT, 164 DAI_LINK_FE_PCM0_IN, 165 DAI_LINK_FE_PCM1_IN, 166 DAI_LINK_FE_BT_OUT, 167 DAI_LINK_FE_BT_IN, 168 DAI_LINK_BE_I2S0, 169 DAI_LINK_BE_I2S1, 170 DAI_LINK_BE_I2S2, 171 DAI_LINK_BE_I2S3, 172 DAI_LINK_BE_MRG_BT, 173 }; 174 175 static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = { 176 /* FE */ 177 [DAI_LINK_FE_MULTI_CH_OUT] = { 178 .name = "mt2701-cs42448-multi-ch-out", 179 .stream_name = "mt2701-cs42448-multi-ch-out", 180 .cpu_dai_name = "PCM_multi", 181 .codec_name = "snd-soc-dummy", 182 .codec_dai_name = "snd-soc-dummy-dai", 183 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 184 SND_SOC_DPCM_TRIGGER_POST}, 185 .ops = &mt2701_cs42448_48k_fe_ops, 186 .dynamic = 1, 187 .dpcm_playback = 1, 188 }, 189 [DAI_LINK_FE_PCM0_IN] = { 190 .name = "mt2701-cs42448-pcm0", 191 .stream_name = "mt2701-cs42448-pcm0-data-UL", 192 .cpu_dai_name = "PCM0", 193 .codec_name = "snd-soc-dummy", 194 .codec_dai_name = "snd-soc-dummy-dai", 195 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 196 SND_SOC_DPCM_TRIGGER_POST}, 197 .ops = &mt2701_cs42448_48k_fe_ops, 198 .dynamic = 1, 199 .dpcm_capture = 1, 200 }, 201 [DAI_LINK_FE_PCM1_IN] = { 202 .name = "mt2701-cs42448-pcm1-data-UL", 203 .stream_name = "mt2701-cs42448-pcm1-data-UL", 204 .cpu_dai_name = "PCM1", 205 .codec_name = "snd-soc-dummy", 206 .codec_dai_name = "snd-soc-dummy-dai", 207 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 208 SND_SOC_DPCM_TRIGGER_POST}, 209 .ops = &mt2701_cs42448_48k_fe_ops, 210 .dynamic = 1, 211 .dpcm_capture = 1, 212 }, 213 [DAI_LINK_FE_BT_OUT] = { 214 .name = "mt2701-cs42448-pcm-BT-out", 215 .stream_name = "mt2701-cs42448-pcm-BT", 216 .cpu_dai_name = "PCM_BT_DL", 217 .codec_name = "snd-soc-dummy", 218 .codec_dai_name = "snd-soc-dummy-dai", 219 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 220 SND_SOC_DPCM_TRIGGER_POST}, 221 .dynamic = 1, 222 .dpcm_playback = 1, 223 }, 224 [DAI_LINK_FE_BT_IN] = { 225 .name = "mt2701-cs42448-pcm-BT-in", 226 .stream_name = "mt2701-cs42448-pcm-BT", 227 .cpu_dai_name = "PCM_BT_UL", 228 .codec_name = "snd-soc-dummy", 229 .codec_dai_name = "snd-soc-dummy-dai", 230 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 231 SND_SOC_DPCM_TRIGGER_POST}, 232 .dynamic = 1, 233 .dpcm_capture = 1, 234 }, 235 /* BE */ 236 [DAI_LINK_BE_I2S0] = { 237 .name = "mt2701-cs42448-I2S0", 238 .cpu_dai_name = "I2S0", 239 .no_pcm = 1, 240 .codec_dai_name = "cs42448", 241 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 242 | SND_SOC_DAIFMT_GATED, 243 .ops = &mt2701_cs42448_be_ops, 244 .dpcm_playback = 1, 245 .dpcm_capture = 1, 246 }, 247 [DAI_LINK_BE_I2S1] = { 248 .name = "mt2701-cs42448-I2S1", 249 .cpu_dai_name = "I2S1", 250 .no_pcm = 1, 251 .codec_dai_name = "cs42448", 252 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 253 | SND_SOC_DAIFMT_GATED, 254 .ops = &mt2701_cs42448_be_ops, 255 .dpcm_playback = 1, 256 .dpcm_capture = 1, 257 }, 258 [DAI_LINK_BE_I2S2] = { 259 .name = "mt2701-cs42448-I2S2", 260 .cpu_dai_name = "I2S2", 261 .no_pcm = 1, 262 .codec_dai_name = "cs42448", 263 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 264 | SND_SOC_DAIFMT_GATED, 265 .ops = &mt2701_cs42448_be_ops, 266 .dpcm_playback = 1, 267 .dpcm_capture = 1, 268 }, 269 [DAI_LINK_BE_I2S3] = { 270 .name = "mt2701-cs42448-I2S3", 271 .cpu_dai_name = "I2S3", 272 .no_pcm = 1, 273 .codec_dai_name = "cs42448", 274 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 275 | SND_SOC_DAIFMT_GATED, 276 .ops = &mt2701_cs42448_be_ops, 277 .dpcm_playback = 1, 278 .dpcm_capture = 1, 279 }, 280 [DAI_LINK_BE_MRG_BT] = { 281 .name = "mt2701-cs42448-MRG-BT", 282 .cpu_dai_name = "MRG BT", 283 .no_pcm = 1, 284 .codec_dai_name = "bt-sco-pcm-wb", 285 .dpcm_playback = 1, 286 .dpcm_capture = 1, 287 }, 288 }; 289 290 static struct snd_soc_card mt2701_cs42448_soc_card = { 291 .name = "mt2701-cs42448", 292 .owner = THIS_MODULE, 293 .dai_link = mt2701_cs42448_dai_links, 294 .num_links = ARRAY_SIZE(mt2701_cs42448_dai_links), 295 .controls = mt2701_cs42448_controls, 296 .num_controls = ARRAY_SIZE(mt2701_cs42448_controls), 297 .dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets, 298 .num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets), 299 }; 300 301 static int mt2701_cs42448_machine_probe(struct platform_device *pdev) 302 { 303 struct snd_soc_card *card = &mt2701_cs42448_soc_card; 304 int ret; 305 int i; 306 struct device_node *platform_node, *codec_node, *codec_node_bt_mrg; 307 struct mt2701_cs42448_private *priv = 308 devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private), 309 GFP_KERNEL); 310 struct device *dev = &pdev->dev; 311 312 if (!priv) 313 return -ENOMEM; 314 315 platform_node = of_parse_phandle(pdev->dev.of_node, 316 "mediatek,platform", 0); 317 if (!platform_node) { 318 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 319 return -EINVAL; 320 } 321 for (i = 0; i < card->num_links; i++) { 322 if (mt2701_cs42448_dai_links[i].platform_name) 323 continue; 324 mt2701_cs42448_dai_links[i].platform_of_node = platform_node; 325 } 326 327 card->dev = dev; 328 329 codec_node = of_parse_phandle(pdev->dev.of_node, 330 "mediatek,audio-codec", 0); 331 if (!codec_node) { 332 dev_err(&pdev->dev, 333 "Property 'audio-codec' missing or invalid\n"); 334 return -EINVAL; 335 } 336 for (i = 0; i < card->num_links; i++) { 337 if (mt2701_cs42448_dai_links[i].codec_name) 338 continue; 339 mt2701_cs42448_dai_links[i].codec_of_node = codec_node; 340 } 341 342 codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node, 343 "mediatek,audio-codec-bt-mrg", 0); 344 if (!codec_node_bt_mrg) { 345 dev_err(&pdev->dev, 346 "Property 'audio-codec-bt-mrg' missing or invalid\n"); 347 return -EINVAL; 348 } 349 mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codec_of_node 350 = codec_node_bt_mrg; 351 352 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 353 if (ret) { 354 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); 355 return ret; 356 } 357 358 priv->i2s1_in_mux_gpio_sel_1 = 359 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0); 360 if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) { 361 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1, 362 "i2s1_in_mux_gpio_sel_1"); 363 if (ret) 364 dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n", 365 __func__, ret); 366 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0); 367 } 368 369 priv->i2s1_in_mux_gpio_sel_2 = 370 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0); 371 if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) { 372 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2, 373 "i2s1_in_mux_gpio_sel_2"); 374 if (ret) 375 dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n", 376 __func__, ret); 377 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0); 378 } 379 snd_soc_card_set_drvdata(card, priv); 380 381 ret = devm_snd_soc_register_card(&pdev->dev, card); 382 383 if (ret) 384 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 385 __func__, ret); 386 return ret; 387 } 388 389 #ifdef CONFIG_OF 390 static const struct of_device_id mt2701_cs42448_machine_dt_match[] = { 391 {.compatible = "mediatek,mt2701-cs42448-machine",}, 392 {} 393 }; 394 #endif 395 396 static struct platform_driver mt2701_cs42448_machine = { 397 .driver = { 398 .name = "mt2701-cs42448", 399 #ifdef CONFIG_OF 400 .of_match_table = mt2701_cs42448_machine_dt_match, 401 #endif 402 }, 403 .probe = mt2701_cs42448_machine_probe, 404 }; 405 406 module_platform_driver(mt2701_cs42448_machine); 407 408 /* Module information */ 409 MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver"); 410 MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>"); 411 MODULE_LICENSE("GPL v2"); 412 MODULE_ALIAS("mt2701 cs42448 soc card"); 413