1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Freescale Generic ASoC Sound Card driver with ASRC 4 // 5 // Copyright (C) 2014 Freescale Semiconductor, Inc. 6 // 7 // Author: Nicolin Chen <nicoleotsuka@gmail.com> 8 9 #include <linux/clk.h> 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/of_platform.h> 13 #if IS_ENABLED(CONFIG_SND_AC97_CODEC) 14 #include <sound/ac97_codec.h> 15 #endif 16 #include <sound/pcm_params.h> 17 #include <sound/soc.h> 18 19 #include "fsl_esai.h" 20 #include "fsl_sai.h" 21 #include "imx-audmux.h" 22 23 #include "../codecs/sgtl5000.h" 24 #include "../codecs/wm8962.h" 25 #include "../codecs/wm8960.h" 26 27 #define CS427x_SYSCLK_MCLK 0 28 29 #define RX 0 30 #define TX 1 31 32 /* Default DAI format without Master and Slave flag */ 33 #define DAI_FMT_BASE (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF) 34 35 /** 36 * CODEC private data 37 * 38 * @mclk_freq: Clock rate of MCLK 39 * @mclk_id: MCLK (or main clock) id for set_sysclk() 40 * @fll_id: FLL (or secordary clock) id for set_sysclk() 41 * @pll_id: PLL id for set_pll() 42 */ 43 struct codec_priv { 44 unsigned long mclk_freq; 45 u32 mclk_id; 46 u32 fll_id; 47 u32 pll_id; 48 }; 49 50 /** 51 * CPU private data 52 * 53 * @sysclk_freq[2]: SYSCLK rates for set_sysclk() 54 * @sysclk_dir[2]: SYSCLK directions for set_sysclk() 55 * @sysclk_id[2]: SYSCLK ids for set_sysclk() 56 * @slot_width: Slot width of each frame 57 * 58 * Note: [1] for tx and [0] for rx 59 */ 60 struct cpu_priv { 61 unsigned long sysclk_freq[2]; 62 u32 sysclk_dir[2]; 63 u32 sysclk_id[2]; 64 u32 slot_width; 65 }; 66 67 /** 68 * Freescale Generic ASOC card private data 69 * 70 * @dai_link[3]: DAI link structure including normal one and DPCM link 71 * @pdev: platform device pointer 72 * @codec_priv: CODEC private data 73 * @cpu_priv: CPU private data 74 * @card: ASoC card structure 75 * @sample_rate: Current sample rate 76 * @sample_format: Current sample format 77 * @asrc_rate: ASRC sample rate used by Back-Ends 78 * @asrc_format: ASRC sample format used by Back-Ends 79 * @dai_fmt: DAI format between CPU and CODEC 80 * @name: Card name 81 */ 82 83 struct fsl_asoc_card_priv { 84 struct snd_soc_dai_link dai_link[3]; 85 struct platform_device *pdev; 86 struct codec_priv codec_priv; 87 struct cpu_priv cpu_priv; 88 struct snd_soc_card card; 89 u32 sample_rate; 90 snd_pcm_format_t sample_format; 91 u32 asrc_rate; 92 snd_pcm_format_t asrc_format; 93 u32 dai_fmt; 94 char name[32]; 95 }; 96 97 /** 98 * This dapm route map exsits for DPCM link only. 99 * The other routes shall go through Device Tree. 100 * 101 * Note: keep all ASRC routes in the second half 102 * to drop them easily for non-ASRC cases. 103 */ 104 static const struct snd_soc_dapm_route audio_map[] = { 105 /* 1st half -- Normal DAPM routes */ 106 {"Playback", NULL, "CPU-Playback"}, 107 {"CPU-Capture", NULL, "Capture"}, 108 /* 2nd half -- ASRC DAPM routes */ 109 {"CPU-Playback", NULL, "ASRC-Playback"}, 110 {"ASRC-Capture", NULL, "CPU-Capture"}, 111 }; 112 113 static const struct snd_soc_dapm_route audio_map_ac97[] = { 114 /* 1st half -- Normal DAPM routes */ 115 {"Playback", NULL, "AC97 Playback"}, 116 {"AC97 Capture", NULL, "Capture"}, 117 /* 2nd half -- ASRC DAPM routes */ 118 {"AC97 Playback", NULL, "ASRC-Playback"}, 119 {"ASRC-Capture", NULL, "AC97 Capture"}, 120 }; 121 122 /* Add all possible widgets into here without being redundant */ 123 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = { 124 SND_SOC_DAPM_LINE("Line Out Jack", NULL), 125 SND_SOC_DAPM_LINE("Line In Jack", NULL), 126 SND_SOC_DAPM_HP("Headphone Jack", NULL), 127 SND_SOC_DAPM_SPK("Ext Spk", NULL), 128 SND_SOC_DAPM_MIC("Mic Jack", NULL), 129 SND_SOC_DAPM_MIC("AMIC", NULL), 130 SND_SOC_DAPM_MIC("DMIC", NULL), 131 }; 132 133 static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv) 134 { 135 return priv->dai_fmt == SND_SOC_DAIFMT_AC97; 136 } 137 138 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream, 139 struct snd_pcm_hw_params *params) 140 { 141 struct snd_soc_pcm_runtime *rtd = substream->private_data; 142 struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); 143 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 144 struct cpu_priv *cpu_priv = &priv->cpu_priv; 145 struct device *dev = rtd->card->dev; 146 int ret; 147 148 priv->sample_rate = params_rate(params); 149 priv->sample_format = params_format(params); 150 151 /* 152 * If codec-dai is DAI Master and all configurations are already in the 153 * set_bias_level(), bypass the remaining settings in hw_params(). 154 * Note: (dai_fmt & CBM_CFM) includes CBM_CFM and CBM_CFS. 155 */ 156 if ((priv->card.set_bias_level && 157 priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) || 158 fsl_asoc_card_is_ac97(priv)) 159 return 0; 160 161 /* Specific configurations of DAIs starts from here */ 162 ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, cpu_priv->sysclk_id[tx], 163 cpu_priv->sysclk_freq[tx], 164 cpu_priv->sysclk_dir[tx]); 165 if (ret && ret != -ENOTSUPP) { 166 dev_err(dev, "failed to set sysclk for cpu dai\n"); 167 return ret; 168 } 169 170 if (cpu_priv->slot_width) { 171 ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 172 cpu_priv->slot_width); 173 if (ret && ret != -ENOTSUPP) { 174 dev_err(dev, "failed to set TDM slot for cpu dai\n"); 175 return ret; 176 } 177 } 178 179 return 0; 180 } 181 182 static const struct snd_soc_ops fsl_asoc_card_ops = { 183 .hw_params = fsl_asoc_card_hw_params, 184 }; 185 186 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 187 struct snd_pcm_hw_params *params) 188 { 189 struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); 190 struct snd_interval *rate; 191 struct snd_mask *mask; 192 193 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 194 rate->max = rate->min = priv->asrc_rate; 195 196 mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 197 snd_mask_none(mask); 198 snd_mask_set_format(mask, priv->asrc_format); 199 200 return 0; 201 } 202 203 static struct snd_soc_dai_link fsl_asoc_card_dai[] = { 204 /* Default ASoC DAI Link*/ 205 { 206 .name = "HiFi", 207 .stream_name = "HiFi", 208 .ops = &fsl_asoc_card_ops, 209 }, 210 /* DPCM Link between Front-End and Back-End (Optional) */ 211 { 212 .name = "HiFi-ASRC-FE", 213 .stream_name = "HiFi-ASRC-FE", 214 .codec_name = "snd-soc-dummy", 215 .codec_dai_name = "snd-soc-dummy-dai", 216 .dpcm_playback = 1, 217 .dpcm_capture = 1, 218 .dynamic = 1, 219 }, 220 { 221 .name = "HiFi-ASRC-BE", 222 .stream_name = "HiFi-ASRC-BE", 223 .platform_name = "snd-soc-dummy", 224 .be_hw_params_fixup = be_hw_params_fixup, 225 .ops = &fsl_asoc_card_ops, 226 .dpcm_playback = 1, 227 .dpcm_capture = 1, 228 .no_pcm = 1, 229 }, 230 }; 231 232 static int fsl_asoc_card_set_bias_level(struct snd_soc_card *card, 233 struct snd_soc_dapm_context *dapm, 234 enum snd_soc_bias_level level) 235 { 236 struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card); 237 struct snd_soc_pcm_runtime *rtd; 238 struct snd_soc_dai *codec_dai; 239 struct codec_priv *codec_priv = &priv->codec_priv; 240 struct device *dev = card->dev; 241 unsigned int pll_out; 242 int ret; 243 244 rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); 245 codec_dai = rtd->codec_dai; 246 if (dapm->dev != codec_dai->dev) 247 return 0; 248 249 switch (level) { 250 case SND_SOC_BIAS_PREPARE: 251 if (dapm->bias_level != SND_SOC_BIAS_STANDBY) 252 break; 253 254 if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE) 255 pll_out = priv->sample_rate * 384; 256 else 257 pll_out = priv->sample_rate * 256; 258 259 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 260 codec_priv->mclk_id, 261 codec_priv->mclk_freq, pll_out); 262 if (ret) { 263 dev_err(dev, "failed to start FLL: %d\n", ret); 264 return ret; 265 } 266 267 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->fll_id, 268 pll_out, SND_SOC_CLOCK_IN); 269 if (ret && ret != -ENOTSUPP) { 270 dev_err(dev, "failed to set SYSCLK: %d\n", ret); 271 return ret; 272 } 273 break; 274 275 case SND_SOC_BIAS_STANDBY: 276 if (dapm->bias_level != SND_SOC_BIAS_PREPARE) 277 break; 278 279 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id, 280 codec_priv->mclk_freq, 281 SND_SOC_CLOCK_IN); 282 if (ret && ret != -ENOTSUPP) { 283 dev_err(dev, "failed to switch away from FLL: %d\n", ret); 284 return ret; 285 } 286 287 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 0, 0, 0); 288 if (ret) { 289 dev_err(dev, "failed to stop FLL: %d\n", ret); 290 return ret; 291 } 292 break; 293 294 default: 295 break; 296 } 297 298 return 0; 299 } 300 301 static int fsl_asoc_card_audmux_init(struct device_node *np, 302 struct fsl_asoc_card_priv *priv) 303 { 304 struct device *dev = &priv->pdev->dev; 305 u32 int_ptcr = 0, ext_ptcr = 0; 306 int int_port, ext_port; 307 int ret; 308 309 ret = of_property_read_u32(np, "mux-int-port", &int_port); 310 if (ret) { 311 dev_err(dev, "mux-int-port missing or invalid\n"); 312 return ret; 313 } 314 ret = of_property_read_u32(np, "mux-ext-port", &ext_port); 315 if (ret) { 316 dev_err(dev, "mux-ext-port missing or invalid\n"); 317 return ret; 318 } 319 320 /* 321 * The port numbering in the hardware manual starts at 1, while 322 * the AUDMUX API expects it starts at 0. 323 */ 324 int_port--; 325 ext_port--; 326 327 /* 328 * Use asynchronous mode (6 wires) for all cases except AC97. 329 * If only 4 wires are needed, just set SSI into 330 * synchronous mode and enable 4 PADs in IOMUX. 331 */ 332 switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { 333 case SND_SOC_DAIFMT_CBM_CFM: 334 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) | 335 IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) | 336 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 337 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | 338 IMX_AUDMUX_V2_PTCR_RFSDIR | 339 IMX_AUDMUX_V2_PTCR_RCLKDIR | 340 IMX_AUDMUX_V2_PTCR_TFSDIR | 341 IMX_AUDMUX_V2_PTCR_TCLKDIR; 342 break; 343 case SND_SOC_DAIFMT_CBM_CFS: 344 int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) | 345 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | 346 IMX_AUDMUX_V2_PTCR_RCLKDIR | 347 IMX_AUDMUX_V2_PTCR_TCLKDIR; 348 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) | 349 IMX_AUDMUX_V2_PTCR_TFSEL(int_port) | 350 IMX_AUDMUX_V2_PTCR_RFSDIR | 351 IMX_AUDMUX_V2_PTCR_TFSDIR; 352 break; 353 case SND_SOC_DAIFMT_CBS_CFM: 354 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) | 355 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 356 IMX_AUDMUX_V2_PTCR_RFSDIR | 357 IMX_AUDMUX_V2_PTCR_TFSDIR; 358 ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) | 359 IMX_AUDMUX_V2_PTCR_TCSEL(int_port) | 360 IMX_AUDMUX_V2_PTCR_RCLKDIR | 361 IMX_AUDMUX_V2_PTCR_TCLKDIR; 362 break; 363 case SND_SOC_DAIFMT_CBS_CFS: 364 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) | 365 IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) | 366 IMX_AUDMUX_V2_PTCR_TFSEL(int_port) | 367 IMX_AUDMUX_V2_PTCR_TCSEL(int_port) | 368 IMX_AUDMUX_V2_PTCR_RFSDIR | 369 IMX_AUDMUX_V2_PTCR_RCLKDIR | 370 IMX_AUDMUX_V2_PTCR_TFSDIR | 371 IMX_AUDMUX_V2_PTCR_TCLKDIR; 372 break; 373 default: 374 if (!fsl_asoc_card_is_ac97(priv)) 375 return -EINVAL; 376 } 377 378 if (fsl_asoc_card_is_ac97(priv)) { 379 int_ptcr = IMX_AUDMUX_V2_PTCR_SYN | 380 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | 381 IMX_AUDMUX_V2_PTCR_TCLKDIR; 382 ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN | 383 IMX_AUDMUX_V2_PTCR_TFSEL(int_port) | 384 IMX_AUDMUX_V2_PTCR_TFSDIR; 385 } 386 387 /* Asynchronous mode can not be set along with RCLKDIR */ 388 if (!fsl_asoc_card_is_ac97(priv)) { 389 unsigned int pdcr = 390 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port); 391 392 ret = imx_audmux_v2_configure_port(int_port, 0, 393 pdcr); 394 if (ret) { 395 dev_err(dev, "audmux internal port setup failed\n"); 396 return ret; 397 } 398 } 399 400 ret = imx_audmux_v2_configure_port(int_port, int_ptcr, 401 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); 402 if (ret) { 403 dev_err(dev, "audmux internal port setup failed\n"); 404 return ret; 405 } 406 407 if (!fsl_asoc_card_is_ac97(priv)) { 408 unsigned int pdcr = 409 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port); 410 411 ret = imx_audmux_v2_configure_port(ext_port, 0, 412 pdcr); 413 if (ret) { 414 dev_err(dev, "audmux external port setup failed\n"); 415 return ret; 416 } 417 } 418 419 ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr, 420 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); 421 if (ret) { 422 dev_err(dev, "audmux external port setup failed\n"); 423 return ret; 424 } 425 426 return 0; 427 } 428 429 static int fsl_asoc_card_late_probe(struct snd_soc_card *card) 430 { 431 struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card); 432 struct snd_soc_pcm_runtime *rtd = list_first_entry( 433 &card->rtd_list, struct snd_soc_pcm_runtime, list); 434 struct snd_soc_dai *codec_dai = rtd->codec_dai; 435 struct codec_priv *codec_priv = &priv->codec_priv; 436 struct device *dev = card->dev; 437 int ret; 438 439 if (fsl_asoc_card_is_ac97(priv)) { 440 #if IS_ENABLED(CONFIG_SND_AC97_CODEC) 441 struct snd_soc_component *component = rtd->codec_dai->component; 442 struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component); 443 444 /* 445 * Use slots 3/4 for S/PDIF so SSI won't try to enable 446 * other slots and send some samples there 447 * due to SLOTREQ bits for S/PDIF received from codec 448 */ 449 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, 450 AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4); 451 #endif 452 453 return 0; 454 } 455 456 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id, 457 codec_priv->mclk_freq, SND_SOC_CLOCK_IN); 458 if (ret && ret != -ENOTSUPP) { 459 dev_err(dev, "failed to set sysclk in %s\n", __func__); 460 return ret; 461 } 462 463 return 0; 464 } 465 466 static int fsl_asoc_card_probe(struct platform_device *pdev) 467 { 468 struct device_node *cpu_np, *codec_np, *asrc_np; 469 struct device_node *np = pdev->dev.of_node; 470 struct platform_device *asrc_pdev = NULL; 471 struct platform_device *cpu_pdev; 472 struct fsl_asoc_card_priv *priv; 473 struct i2c_client *codec_dev; 474 const char *codec_dai_name; 475 u32 width; 476 int ret; 477 478 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 479 if (!priv) 480 return -ENOMEM; 481 482 cpu_np = of_parse_phandle(np, "audio-cpu", 0); 483 /* Give a chance to old DT binding */ 484 if (!cpu_np) 485 cpu_np = of_parse_phandle(np, "ssi-controller", 0); 486 if (!cpu_np) { 487 dev_err(&pdev->dev, "CPU phandle missing or invalid\n"); 488 ret = -EINVAL; 489 goto fail; 490 } 491 492 cpu_pdev = of_find_device_by_node(cpu_np); 493 if (!cpu_pdev) { 494 dev_err(&pdev->dev, "failed to find CPU DAI device\n"); 495 ret = -EINVAL; 496 goto fail; 497 } 498 499 codec_np = of_parse_phandle(np, "audio-codec", 0); 500 if (codec_np) 501 codec_dev = of_find_i2c_device_by_node(codec_np); 502 else 503 codec_dev = NULL; 504 505 asrc_np = of_parse_phandle(np, "audio-asrc", 0); 506 if (asrc_np) 507 asrc_pdev = of_find_device_by_node(asrc_np); 508 509 /* Get the MCLK rate only, and leave it controlled by CODEC drivers */ 510 if (codec_dev) { 511 struct clk *codec_clk = clk_get(&codec_dev->dev, NULL); 512 513 if (!IS_ERR(codec_clk)) { 514 priv->codec_priv.mclk_freq = clk_get_rate(codec_clk); 515 clk_put(codec_clk); 516 } 517 } 518 519 /* Default sample rate and format, will be updated in hw_params() */ 520 priv->sample_rate = 44100; 521 priv->sample_format = SNDRV_PCM_FORMAT_S16_LE; 522 523 /* Assign a default DAI format, and allow each card to overwrite it */ 524 priv->dai_fmt = DAI_FMT_BASE; 525 526 /* Diversify the card configurations */ 527 if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) { 528 codec_dai_name = "cs42888"; 529 priv->card.set_bias_level = NULL; 530 priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq; 531 priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq; 532 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT; 533 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT; 534 priv->cpu_priv.slot_width = 32; 535 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; 536 } else if (of_device_is_compatible(np, "fsl,imx-audio-cs427x")) { 537 codec_dai_name = "cs4271-hifi"; 538 priv->codec_priv.mclk_id = CS427x_SYSCLK_MCLK; 539 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; 540 } else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) { 541 codec_dai_name = "sgtl5000"; 542 priv->codec_priv.mclk_id = SGTL5000_SYSCLK; 543 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; 544 } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) { 545 codec_dai_name = "wm8962"; 546 priv->card.set_bias_level = fsl_asoc_card_set_bias_level; 547 priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK; 548 priv->codec_priv.fll_id = WM8962_SYSCLK_FLL; 549 priv->codec_priv.pll_id = WM8962_FLL; 550 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; 551 } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) { 552 codec_dai_name = "wm8960-hifi"; 553 priv->card.set_bias_level = fsl_asoc_card_set_bias_level; 554 priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO; 555 priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO; 556 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; 557 } else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) { 558 codec_dai_name = "ac97-hifi"; 559 priv->card.set_bias_level = NULL; 560 priv->dai_fmt = SND_SOC_DAIFMT_AC97; 561 } else { 562 dev_err(&pdev->dev, "unknown Device Tree compatible\n"); 563 ret = -EINVAL; 564 goto asrc_fail; 565 } 566 567 if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) { 568 dev_err(&pdev->dev, "failed to find codec device\n"); 569 ret = -EINVAL; 570 goto asrc_fail; 571 } 572 573 /* Common settings for corresponding Freescale CPU DAI driver */ 574 if (of_node_name_eq(cpu_np, "ssi")) { 575 /* Only SSI needs to configure AUDMUX */ 576 ret = fsl_asoc_card_audmux_init(np, priv); 577 if (ret) { 578 dev_err(&pdev->dev, "failed to init audmux\n"); 579 goto asrc_fail; 580 } 581 } else if (of_node_name_eq(cpu_np, "esai")) { 582 priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL; 583 priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL; 584 } else if (of_node_name_eq(cpu_np, "sai")) { 585 priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1; 586 priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1; 587 } 588 589 snprintf(priv->name, sizeof(priv->name), "%s-audio", 590 fsl_asoc_card_is_ac97(priv) ? "ac97" : 591 codec_dev->name); 592 593 /* Initialize sound card */ 594 priv->pdev = pdev; 595 priv->card.dev = &pdev->dev; 596 priv->card.name = priv->name; 597 priv->card.dai_link = priv->dai_link; 598 priv->card.dapm_routes = fsl_asoc_card_is_ac97(priv) ? 599 audio_map_ac97 : audio_map; 600 priv->card.late_probe = fsl_asoc_card_late_probe; 601 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map); 602 priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets; 603 priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets); 604 605 /* Drop the second half of DAPM routes -- ASRC */ 606 if (!asrc_pdev) 607 priv->card.num_dapm_routes /= 2; 608 609 memcpy(priv->dai_link, fsl_asoc_card_dai, 610 sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link)); 611 612 ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing"); 613 if (ret) { 614 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); 615 goto asrc_fail; 616 } 617 618 /* Normal DAI Link */ 619 priv->dai_link[0].cpu_of_node = cpu_np; 620 priv->dai_link[0].codec_dai_name = codec_dai_name; 621 622 if (!fsl_asoc_card_is_ac97(priv)) 623 priv->dai_link[0].codec_of_node = codec_np; 624 else { 625 u32 idx; 626 627 ret = of_property_read_u32(cpu_np, "cell-index", &idx); 628 if (ret) { 629 dev_err(&pdev->dev, 630 "cannot get CPU index property\n"); 631 goto asrc_fail; 632 } 633 634 priv->dai_link[0].codec_name = 635 devm_kasprintf(&pdev->dev, GFP_KERNEL, 636 "ac97-codec.%u", 637 (unsigned int)idx); 638 if (!priv->dai_link[0].codec_name) { 639 ret = -ENOMEM; 640 goto asrc_fail; 641 } 642 } 643 644 priv->dai_link[0].platform_of_node = cpu_np; 645 priv->dai_link[0].dai_fmt = priv->dai_fmt; 646 priv->card.num_links = 1; 647 648 if (asrc_pdev) { 649 /* DPCM DAI Links only if ASRC exsits */ 650 priv->dai_link[1].cpu_of_node = asrc_np; 651 priv->dai_link[1].platform_of_node = asrc_np; 652 priv->dai_link[2].codec_dai_name = codec_dai_name; 653 priv->dai_link[2].codec_of_node = codec_np; 654 priv->dai_link[2].codec_name = 655 priv->dai_link[0].codec_name; 656 priv->dai_link[2].cpu_of_node = cpu_np; 657 priv->dai_link[2].dai_fmt = priv->dai_fmt; 658 priv->card.num_links = 3; 659 660 ret = of_property_read_u32(asrc_np, "fsl,asrc-rate", 661 &priv->asrc_rate); 662 if (ret) { 663 dev_err(&pdev->dev, "failed to get output rate\n"); 664 ret = -EINVAL; 665 goto asrc_fail; 666 } 667 668 ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width); 669 if (ret) { 670 dev_err(&pdev->dev, "failed to get output rate\n"); 671 ret = -EINVAL; 672 goto asrc_fail; 673 } 674 675 if (width == 24) 676 priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE; 677 else 678 priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE; 679 } 680 681 /* Finish card registering */ 682 platform_set_drvdata(pdev, priv); 683 snd_soc_card_set_drvdata(&priv->card, priv); 684 685 ret = devm_snd_soc_register_card(&pdev->dev, &priv->card); 686 if (ret && ret != -EPROBE_DEFER) 687 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 688 689 asrc_fail: 690 of_node_put(asrc_np); 691 of_node_put(codec_np); 692 put_device(&cpu_pdev->dev); 693 fail: 694 of_node_put(cpu_np); 695 696 return ret; 697 } 698 699 static const struct of_device_id fsl_asoc_card_dt_ids[] = { 700 { .compatible = "fsl,imx-audio-ac97", }, 701 { .compatible = "fsl,imx-audio-cs42888", }, 702 { .compatible = "fsl,imx-audio-cs427x", }, 703 { .compatible = "fsl,imx-audio-sgtl5000", }, 704 { .compatible = "fsl,imx-audio-wm8962", }, 705 { .compatible = "fsl,imx-audio-wm8960", }, 706 {} 707 }; 708 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids); 709 710 static struct platform_driver fsl_asoc_card_driver = { 711 .probe = fsl_asoc_card_probe, 712 .driver = { 713 .name = "fsl-asoc-card", 714 .pm = &snd_soc_pm_ops, 715 .of_match_table = fsl_asoc_card_dt_ids, 716 }, 717 }; 718 module_platform_driver(fsl_asoc_card_driver); 719 720 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC"); 721 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>"); 722 MODULE_ALIAS("platform:fsl-asoc-card"); 723 MODULE_LICENSE("GPL"); 724