Meng Wang | 43bbb87 | 2018-12-10 12:32:05 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #include <linux/init.h> |
| 7 | #include <linux/module.h> |
| 8 | #include <linux/of.h> |
| 9 | #include <linux/bitops.h> |
| 10 | #include <linux/slimbus/slimbus.h> |
| 11 | #include <sound/soc.h> |
| 12 | #include <sound/pcm.h> |
| 13 | #include <sound/pcm_params.h> |
Laxminath Kasam | 605b42f | 2017-08-01 22:02:15 +0530 | [diff] [blame] | 14 | #include "msm-slim-dma.h" |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 15 | |
| 16 | #define SLIM_DEV_NAME "msm-dai-slim" |
| 17 | |
| 18 | #define SLIM_DAI_RATES (SNDRV_PCM_RATE_48000 | \ |
| 19 | SNDRV_PCM_RATE_8000 | \ |
| 20 | SNDRV_PCM_RATE_16000 | \ |
| 21 | SNDRV_PCM_RATE_96000 | \ |
| 22 | SNDRV_PCM_RATE_192000 | \ |
| 23 | SNDRV_PCM_RATE_384000) |
| 24 | |
| 25 | #define SLIM_DAI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ |
| 26 | SNDRV_PCM_FMTBIT_S24_LE | \ |
| 27 | SNDRV_PCM_FMTBIT_S32_LE) |
| 28 | |
| 29 | #define DAI_STATE_INITIALIZED (0x01 << 0) |
| 30 | #define DAI_STATE_PREPARED (0x01 << 1) |
| 31 | #define DAI_STATE_RUNNING (0x01 << 2) |
| 32 | |
| 33 | #define SET_DAI_STATE(status, state) \ |
| 34 | (status |= state) |
| 35 | |
| 36 | #define CLR_DAI_STATE(status, state) \ |
| 37 | (status = status & (~state)) |
| 38 | |
| 39 | enum { |
| 40 | MSM_DAI_SLIM0 = 0, |
| 41 | NUM_SLIM_DAIS, |
| 42 | }; |
| 43 | |
| 44 | struct msm_slim_dai_data { |
| 45 | unsigned int dai_id; |
| 46 | u16 *chan_h; |
| 47 | u16 *sh_ch; |
| 48 | u16 grph; |
| 49 | u32 rate; |
| 50 | u16 bits; |
| 51 | u16 ch_cnt; |
| 52 | u8 status; |
| 53 | struct snd_soc_dai_driver *dai_drv; |
| 54 | struct msm_slim_dma_data dma_data; |
| 55 | struct slim_port_cfg port_cfg; |
| 56 | }; |
| 57 | |
| 58 | struct msm_dai_slim_drv_data { |
| 59 | struct slim_device *sdev; |
| 60 | u16 num_dais; |
| 61 | struct msm_slim_dai_data slim_dai_data[NUM_SLIM_DAIS]; |
| 62 | }; |
| 63 | |
| 64 | struct msm_slim_dai_data *msm_slim_get_dai_data( |
| 65 | struct msm_dai_slim_drv_data *drv_data, |
| 66 | struct snd_soc_dai *dai) |
| 67 | { |
| 68 | struct msm_slim_dai_data *dai_data_t; |
| 69 | int i; |
| 70 | |
| 71 | for (i = 0; i < drv_data->num_dais; i++) { |
| 72 | dai_data_t = &drv_data->slim_dai_data[i]; |
| 73 | if (dai_data_t->dai_id == dai->id) |
| 74 | return dai_data_t; |
| 75 | } |
| 76 | |
| 77 | dev_err(dai->dev, |
| 78 | "%s: no dai data found for dai_id %d\n", |
| 79 | __func__, dai->id); |
| 80 | return NULL; |
| 81 | } |
| 82 | |
| 83 | static int msm_dai_slim_ch_ctl(struct msm_slim_dma_data *dma_data, |
| 84 | struct snd_soc_dai *dai, bool enable) |
| 85 | { |
| 86 | struct slim_device *sdev; |
| 87 | struct msm_dai_slim_drv_data *drv_data; |
| 88 | struct msm_slim_dai_data *dai_data; |
| 89 | int rc, rc1, i; |
| 90 | |
| 91 | if (!dma_data || !dma_data->sdev) { |
| 92 | pr_err("%s: Invalid %s\n", __func__, |
| 93 | (!dma_data) ? "dma_data" : "slim_device"); |
| 94 | return -EINVAL; |
| 95 | } |
| 96 | |
| 97 | sdev = dma_data->sdev; |
| 98 | drv_data = dev_get_drvdata(&sdev->dev); |
| 99 | dai_data = msm_slim_get_dai_data(drv_data, dai); |
| 100 | |
| 101 | if (!dai_data) { |
| 102 | dev_err(dai->dev, |
| 103 | "%s: Invalid dai_data for dai_id %d\n", |
| 104 | __func__, dai->id); |
| 105 | return -EINVAL; |
| 106 | } |
| 107 | |
| 108 | dev_dbg(&sdev->dev, |
| 109 | "%s: enable = %s, rate = %u\n", __func__, |
| 110 | enable ? "true" : "false", |
| 111 | dai_data->rate); |
| 112 | |
| 113 | if (enable) { |
| 114 | if (!(dai_data->status & DAI_STATE_PREPARED)) { |
| 115 | dev_err(&sdev->dev, |
| 116 | "%s: dai id (%d) has invalid state 0x%x\n", |
| 117 | __func__, dai->id, dai_data->status); |
| 118 | return -EINVAL; |
| 119 | } |
| 120 | |
| 121 | rc = slim_alloc_mgrports(sdev, |
| 122 | SLIM_REQ_DEFAULT, dai_data->ch_cnt, |
| 123 | &(dma_data->ph), |
| 124 | sizeof(dma_data->ph)); |
| 125 | if (rc < 0) { |
| 126 | dev_err(&sdev->dev, |
| 127 | "%s:alloc mgrport failed rc %d\n", |
| 128 | __func__, rc); |
| 129 | goto done; |
| 130 | } |
| 131 | |
| 132 | rc = slim_config_mgrports(sdev, &(dma_data->ph), |
| 133 | dai_data->ch_cnt, |
| 134 | &(dai_data->port_cfg)); |
| 135 | if (rc < 0) { |
| 136 | dev_err(&sdev->dev, |
| 137 | "%s: config mgrport failed rc %d\n", |
| 138 | __func__, rc); |
| 139 | goto err_done; |
| 140 | } |
| 141 | |
| 142 | for (i = 0; i < dai_data->ch_cnt; i++) { |
| 143 | rc = slim_connect_sink(sdev, |
| 144 | &dma_data->ph, 1, |
| 145 | dai_data->chan_h[i]); |
| 146 | if (rc < 0) { |
| 147 | dev_err(&sdev->dev, |
| 148 | "%s: slim_connect_sink failed, ch = %d, err = %d\n", |
| 149 | __func__, i, rc); |
| 150 | goto err_done; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | rc = slim_control_ch(sdev, |
| 155 | dai_data->grph, |
| 156 | SLIM_CH_ACTIVATE, true); |
| 157 | if (rc < 0) { |
| 158 | dev_err(&sdev->dev, |
| 159 | "%s: slim activate ch failed, err = %d\n", |
| 160 | __func__, rc); |
| 161 | goto err_done; |
| 162 | } |
| 163 | /* Mark dai status as running */ |
| 164 | SET_DAI_STATE(dai_data->status, DAI_STATE_RUNNING); |
| 165 | } else { |
| 166 | if (!(dai_data->status & DAI_STATE_RUNNING)) { |
| 167 | dev_err(&sdev->dev, |
| 168 | "%s: dai id (%d) has invalid state 0x%x\n", |
| 169 | __func__, dai->id, dai_data->status); |
| 170 | return -EINVAL; |
| 171 | } |
| 172 | |
| 173 | rc = slim_control_ch(sdev, |
| 174 | dai_data->grph, |
| 175 | SLIM_CH_REMOVE, true); |
| 176 | if (rc < 0) { |
| 177 | dev_err(&sdev->dev, |
| 178 | "%s: slim activate ch failed, err = %d\n", |
| 179 | __func__, rc); |
| 180 | goto done; |
| 181 | } |
| 182 | |
| 183 | rc = slim_dealloc_mgrports(sdev, |
| 184 | &dma_data->ph, 1); |
| 185 | if (rc < 0) { |
| 186 | dev_err(&sdev->dev, |
| 187 | "%s: dealloc mgrport failed, err = %d\n", |
| 188 | __func__, rc); |
| 189 | goto done; |
| 190 | } |
| 191 | /* clear running state for dai*/ |
| 192 | CLR_DAI_STATE(dai_data->status, DAI_STATE_RUNNING); |
| 193 | } |
| 194 | |
| 195 | return rc; |
| 196 | |
| 197 | err_done: |
| 198 | rc1 = slim_dealloc_mgrports(sdev, |
| 199 | &dma_data->ph, 1); |
| 200 | if (rc1 < 0) |
| 201 | dev_err(&sdev->dev, |
| 202 | "%s: dealloc mgrport failed, err = %d\n", |
| 203 | __func__, rc1); |
| 204 | done: |
| 205 | return rc; |
| 206 | } |
| 207 | |
| 208 | static int msm_dai_slim_hw_params( |
| 209 | struct snd_pcm_substream *substream, |
| 210 | struct snd_pcm_hw_params *params, |
| 211 | struct snd_soc_dai *dai) |
| 212 | { |
| 213 | struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| 214 | struct msm_slim_dai_data *dai_data; |
| 215 | int rc = 0; |
| 216 | |
| 217 | dai_data = msm_slim_get_dai_data(drv_data, dai); |
| 218 | if (!dai_data) { |
| 219 | dev_err(dai->dev, |
| 220 | "%s: Invalid dai_data for dai_id %d\n", |
| 221 | __func__, dai->id); |
| 222 | rc = -EINVAL; |
| 223 | goto done; |
| 224 | } |
| 225 | |
| 226 | if (!dai_data->ch_cnt || dai_data->ch_cnt != params_channels(params)) { |
| 227 | dev_err(dai->dev, "%s: invalid ch_cnt %d %d\n", |
| 228 | __func__, dai_data->ch_cnt, params_channels(params)); |
| 229 | rc = -EINVAL; |
| 230 | goto done; |
| 231 | } |
| 232 | |
| 233 | dai_data->rate = params_rate(params); |
| 234 | dai_data->port_cfg.port_opts = SLIM_OPT_NONE; |
| 235 | if (dai_data->rate >= SNDRV_PCM_RATE_48000) |
| 236 | dai_data->port_cfg.watermark = 16; |
| 237 | else |
| 238 | dai_data->port_cfg.watermark = 8; |
| 239 | |
| 240 | switch (params_format(params)) { |
| 241 | case SNDRV_PCM_FORMAT_S16_LE: |
| 242 | dai_data->bits = 16; |
| 243 | break; |
| 244 | case SNDRV_PCM_FORMAT_S24_LE: |
| 245 | dai_data->bits = 24; |
| 246 | break; |
| 247 | case SNDRV_PCM_FORMAT_S32_LE: |
| 248 | dai_data->bits = 32; |
| 249 | break; |
| 250 | default: |
| 251 | dev_err(dai->dev, "%s: invalid format %d\n", __func__, |
| 252 | params_format(params)); |
| 253 | rc = -EINVAL; |
| 254 | goto done; |
| 255 | } |
| 256 | |
| 257 | dev_dbg(dai->dev, "%s: ch_cnt=%u rate=%u, bit_width = %u\n", |
| 258 | __func__, dai_data->ch_cnt, dai_data->rate, |
| 259 | dai_data->bits); |
| 260 | done: |
| 261 | return rc; |
| 262 | } |
| 263 | |
| 264 | static int msm_dai_slim_set_channel_map(struct snd_soc_dai *dai, |
| 265 | unsigned int tx_num, unsigned int *tx_slot, |
| 266 | unsigned int rx_num, unsigned int *rx_slot) |
| 267 | { |
| 268 | struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| 269 | struct msm_slim_dai_data *dai_data; |
| 270 | struct snd_soc_dai_driver *dai_drv; |
| 271 | u8 i = 0; |
| 272 | |
| 273 | dev_dbg(dai->dev, |
| 274 | "%s: tx_num=%u, rx_num=%u\n", |
| 275 | __func__, tx_num, rx_num); |
| 276 | |
| 277 | dai_data = msm_slim_get_dai_data(drv_data, dai); |
| 278 | if (!dai_data) { |
| 279 | dev_err(dai->dev, |
| 280 | "%s: Invalid dai_data for dai_id %d\n", |
| 281 | __func__, dai->id); |
| 282 | return -EINVAL; |
| 283 | } |
| 284 | |
| 285 | dai_drv = dai_data->dai_drv; |
| 286 | |
| 287 | if (tx_num > dai_drv->capture.channels_max) { |
| 288 | dev_err(dai->dev, "%s: tx_num %u max out master port cnt\n", |
| 289 | __func__, tx_num); |
| 290 | return -EINVAL; |
| 291 | } |
| 292 | |
| 293 | for (i = 0; i < tx_num; i++) |
| 294 | dai_data->sh_ch[i] = tx_slot[i]; |
| 295 | |
| 296 | dai_data->ch_cnt = tx_num; |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | static int msm_dai_slim_prepare(struct snd_pcm_substream *substream, |
| 301 | struct snd_soc_dai *dai) |
| 302 | { |
| 303 | struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| 304 | struct msm_slim_dma_data *dma_data; |
| 305 | struct msm_slim_dai_data *dai_data = NULL; |
| 306 | struct slim_ch prop; |
| 307 | int rc; |
| 308 | u8 i, j; |
| 309 | |
| 310 | dai_data = msm_slim_get_dai_data(drv_data, dai); |
| 311 | if (!dai_data) { |
| 312 | dev_err(dai->dev, |
| 313 | "%s: Invalid dai_data for dai %d\n", |
| 314 | __func__, dai->id); |
| 315 | return -EINVAL; |
| 316 | } |
| 317 | |
| 318 | if (!(dai_data->status & DAI_STATE_INITIALIZED)) { |
| 319 | dev_err(dai->dev, |
| 320 | "%s: dai id (%d) has invalid state 0x%x\n", |
| 321 | __func__, dai->id, dai_data->status); |
| 322 | return -EINVAL; |
| 323 | } |
| 324 | |
| 325 | if (dai_data->status & DAI_STATE_PREPARED) { |
| 326 | dev_dbg(dai->dev, |
| 327 | "%s: dai id (%d) has already prepared.\n", |
| 328 | __func__, dai->id); |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | dma_data = &dai_data->dma_data; |
| 333 | snd_soc_dai_set_dma_data(dai, substream, dma_data); |
| 334 | |
| 335 | for (i = 0; i < dai_data->ch_cnt; i++) { |
| 336 | rc = slim_query_ch(drv_data->sdev, dai_data->sh_ch[i], |
| 337 | &dai_data->chan_h[i]); |
| 338 | if (rc) { |
| 339 | dev_err(dai->dev, "%s:query chan handle failed rc %d\n", |
| 340 | __func__, rc); |
| 341 | goto error_chan_query; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | prop.prot = SLIM_AUTO_ISO; |
| 346 | prop.baser = SLIM_RATE_4000HZ; |
| 347 | prop.dataf = SLIM_CH_DATAF_NOT_DEFINED; |
| 348 | prop.auxf = SLIM_CH_AUXF_NOT_APPLICABLE; |
| 349 | prop.ratem = (dai_data->rate/4000); |
| 350 | prop.sampleszbits = dai_data->bits; |
| 351 | |
| 352 | rc = slim_define_ch(drv_data->sdev, &prop, dai_data->chan_h, |
| 353 | dai_data->ch_cnt, true, &dai_data->grph); |
| 354 | |
| 355 | if (rc) { |
| 356 | dev_err(dai->dev, "%s:define chan failed rc %d\n", |
| 357 | __func__, rc); |
| 358 | goto error_define_chan; |
| 359 | } |
| 360 | |
| 361 | /* Mark stream status as prepared */ |
| 362 | SET_DAI_STATE(dai_data->status, DAI_STATE_PREPARED); |
| 363 | |
| 364 | return rc; |
| 365 | |
| 366 | error_define_chan: |
| 367 | error_chan_query: |
| 368 | for (j = 0; j < i; j++) |
| 369 | slim_dealloc_ch(drv_data->sdev, dai_data->chan_h[j]); |
| 370 | return rc; |
| 371 | } |
| 372 | |
| 373 | static void msm_dai_slim_shutdown(struct snd_pcm_substream *stream, |
| 374 | struct snd_soc_dai *dai) |
| 375 | { |
| 376 | struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| 377 | struct msm_slim_dma_data *dma_data = NULL; |
| 378 | struct msm_slim_dai_data *dai_data; |
| 379 | int i, rc = 0; |
| 380 | |
| 381 | dai_data = msm_slim_get_dai_data(drv_data, dai); |
| 382 | dma_data = snd_soc_dai_get_dma_data(dai, stream); |
| 383 | if (!dma_data || !dai_data) { |
| 384 | dev_err(dai->dev, |
| 385 | "%s: Invalid %s\n", __func__, |
| 386 | (!dma_data) ? "dma_data" : "dai_data"); |
| 387 | return; |
| 388 | } |
| 389 | |
| 390 | if ((!(dai_data->status & DAI_STATE_PREPARED)) || |
| 391 | dai_data->status & DAI_STATE_RUNNING) { |
| 392 | dev_err(dai->dev, |
| 393 | "%s: dai id (%d) has invalid state 0x%x\n", |
| 394 | __func__, dai->id, dai_data->status); |
| 395 | return; |
| 396 | } |
| 397 | |
| 398 | for (i = 0; i < dai_data->ch_cnt; i++) { |
| 399 | rc = slim_dealloc_ch(drv_data->sdev, dai_data->chan_h[i]); |
| 400 | if (rc) { |
| 401 | dev_err(dai->dev, |
| 402 | "%s: dealloc_ch failed, err = %d\n", |
| 403 | __func__, rc); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | snd_soc_dai_set_dma_data(dai, stream, NULL); |
| 408 | /* clear prepared state for the dai */ |
| 409 | CLR_DAI_STATE(dai_data->status, DAI_STATE_PREPARED); |
| 410 | } |
| 411 | |
| 412 | static const struct snd_soc_component_driver msm_dai_slim_component = { |
| 413 | .name = "msm-dai-slim-cmpnt", |
| 414 | }; |
| 415 | |
| 416 | static struct snd_soc_dai_ops msm_dai_slim_ops = { |
| 417 | .prepare = msm_dai_slim_prepare, |
| 418 | .hw_params = msm_dai_slim_hw_params, |
| 419 | .shutdown = msm_dai_slim_shutdown, |
| 420 | .set_channel_map = msm_dai_slim_set_channel_map, |
| 421 | }; |
| 422 | |
| 423 | static struct snd_soc_dai_driver msm_slim_dais[] = { |
| 424 | { |
| 425 | /* |
| 426 | * The first dai name should be same as device name |
| 427 | * to support registering single and multile dais. |
| 428 | */ |
| 429 | .name = SLIM_DEV_NAME, |
| 430 | .id = MSM_DAI_SLIM0, |
| 431 | .capture = { |
| 432 | .rates = SLIM_DAI_RATES, |
| 433 | .formats = SLIM_DAI_FORMATS, |
| 434 | .channels_min = 1, |
| 435 | /* |
| 436 | * max channels allowed is |
| 437 | * dependent on platform and |
| 438 | * will be updated before this |
| 439 | * dai driver is registered. |
| 440 | */ |
| 441 | .channels_max = 1, |
| 442 | .rate_min = 8000, |
| 443 | .rate_max = 384000, |
| 444 | .stream_name = "SLIM_DAI0 Capture", |
| 445 | }, |
| 446 | .ops = &msm_dai_slim_ops, |
| 447 | }, |
| 448 | /* |
| 449 | * If multiple dais are needed, |
| 450 | * add dais here and update the |
| 451 | * dai_id enum. |
| 452 | */ |
| 453 | }; |
| 454 | |
| 455 | static void msm_dai_slim_remove_dai_data( |
| 456 | struct device *dev, |
| 457 | struct msm_dai_slim_drv_data *drv_data) |
| 458 | { |
| 459 | int i; |
| 460 | struct msm_slim_dai_data *dai_data_t; |
| 461 | |
| 462 | for (i = 0; i < drv_data->num_dais; i++) { |
| 463 | dai_data_t = &drv_data->slim_dai_data[i]; |
| 464 | |
| 465 | kfree(dai_data_t->chan_h); |
| 466 | dai_data_t->chan_h = NULL; |
| 467 | kfree(dai_data_t->sh_ch); |
| 468 | dai_data_t->sh_ch = NULL; |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | static int msm_dai_slim_populate_dai_data(struct device *dev, |
| 473 | struct msm_dai_slim_drv_data *drv_data) |
| 474 | { |
| 475 | struct snd_soc_dai_driver *dai_drv; |
| 476 | struct msm_slim_dai_data *dai_data_t; |
| 477 | u8 num_ch; |
| 478 | int i, j, rc; |
| 479 | |
| 480 | for (i = 0; i < drv_data->num_dais; i++) { |
| 481 | num_ch = 0; |
| 482 | dai_drv = &msm_slim_dais[i]; |
| 483 | num_ch += dai_drv->capture.channels_max; |
| 484 | num_ch += dai_drv->playback.channels_max; |
| 485 | |
| 486 | dai_data_t = &drv_data->slim_dai_data[i]; |
| 487 | dai_data_t->dai_drv = dai_drv; |
| 488 | dai_data_t->dai_id = dai_drv->id; |
| 489 | dai_data_t->dma_data.sdev = drv_data->sdev; |
| 490 | dai_data_t->dma_data.dai_channel_ctl = |
| 491 | msm_dai_slim_ch_ctl; |
| 492 | SET_DAI_STATE(dai_data_t->status, |
| 493 | DAI_STATE_INITIALIZED); |
| 494 | |
| 495 | dai_data_t->chan_h = devm_kzalloc(dev, |
| 496 | sizeof(u16) * num_ch, |
| 497 | GFP_KERNEL); |
| 498 | if (!dai_data_t->chan_h) { |
| 499 | dev_err(dev, |
| 500 | "%s: DAI ID %d, Failed to alloc channel handles\n", |
| 501 | __func__, i); |
| 502 | rc = -ENOMEM; |
| 503 | goto err_mem_alloc; |
| 504 | } |
| 505 | |
| 506 | dai_data_t->sh_ch = devm_kzalloc(dev, |
| 507 | sizeof(u16) * num_ch, |
| 508 | GFP_KERNEL); |
| 509 | if (!dai_data_t->sh_ch) { |
| 510 | dev_err(dev, |
| 511 | "%s: DAI ID %d, Failed to alloc sh_ch\n", |
| 512 | __func__, i); |
| 513 | rc = -ENOMEM; |
| 514 | goto err_mem_alloc; |
| 515 | } |
| 516 | } |
| 517 | return 0; |
| 518 | |
| 519 | err_mem_alloc: |
| 520 | for (j = 0; j < i; j++) { |
| 521 | dai_data_t = &drv_data->slim_dai_data[i]; |
| 522 | |
| 523 | devm_kfree(dev, dai_data_t->chan_h); |
| 524 | dai_data_t->chan_h = NULL; |
| 525 | |
| 526 | devm_kfree(dev, dai_data_t->sh_ch); |
| 527 | dai_data_t->sh_ch = NULL; |
| 528 | } |
| 529 | return rc; |
| 530 | } |
| 531 | |
| 532 | static int msm_dai_slim_dev_probe(struct slim_device *sdev) |
| 533 | { |
| 534 | int rc, i; |
| 535 | u8 max_channels; |
| 536 | u32 apps_ch_pipes; |
| 537 | struct msm_dai_slim_drv_data *drv_data; |
| 538 | struct device *dev = &sdev->dev; |
| 539 | struct snd_soc_dai_driver *dai_drv; |
| 540 | |
| 541 | if (!dev->of_node || |
| 542 | !dev->of_node->parent) { |
| 543 | dev_err(dev, |
| 544 | "%s: Invalid %s\n", __func__, |
| 545 | (!dev->of_node) ? "of_node" : "parent_of_node"); |
| 546 | return -EINVAL; |
| 547 | } |
| 548 | |
| 549 | rc = of_property_read_u32(dev->of_node->parent, |
| 550 | "qcom,apps-ch-pipes", |
| 551 | &apps_ch_pipes); |
| 552 | if (rc) { |
| 553 | dev_err(dev, |
| 554 | "%s: Failed to lookup property %s in node %s, err = %d\n", |
| 555 | __func__, "qcom,apps-ch-pipes", |
| 556 | dev->of_node->parent->full_name, rc); |
| 557 | goto err_ret; |
| 558 | } |
| 559 | |
| 560 | max_channels = hweight_long(apps_ch_pipes); |
| 561 | if (max_channels <= 0) { |
| 562 | dev_err(dev, |
| 563 | "%s: Invalid apps owned ports %d\n", |
| 564 | __func__, max_channels); |
| 565 | goto err_ret; |
| 566 | } |
| 567 | |
| 568 | dev_dbg(dev, "%s: max channels = %u\n", |
| 569 | __func__, max_channels); |
| 570 | |
| 571 | for (i = 0; i < ARRAY_SIZE(msm_slim_dais); i++) { |
| 572 | dai_drv = &msm_slim_dais[i]; |
| 573 | dai_drv->capture.channels_max = max_channels; |
| 574 | dai_drv->playback.channels_max = max_channels; |
| 575 | } |
| 576 | |
| 577 | drv_data = devm_kzalloc(dev, sizeof(*drv_data), |
| 578 | GFP_KERNEL); |
| 579 | if (!drv_data) { |
| 580 | rc = -ENOMEM; |
| 581 | goto err_ret; |
| 582 | } |
| 583 | |
| 584 | drv_data->sdev = sdev; |
| 585 | drv_data->num_dais = NUM_SLIM_DAIS; |
| 586 | |
| 587 | rc = msm_dai_slim_populate_dai_data(dev, drv_data); |
| 588 | if (rc) { |
| 589 | dev_err(dev, |
| 590 | "%s: failed to setup dai_data, err = %d\n", |
| 591 | __func__, rc); |
| 592 | goto err_populate_dai; |
| 593 | } |
| 594 | |
| 595 | rc = snd_soc_register_component(&sdev->dev, &msm_dai_slim_component, |
| 596 | msm_slim_dais, NUM_SLIM_DAIS); |
| 597 | if (rc < 0) { |
| 598 | dev_err(dev, "%s: failed to register DAI, err = %d\n", |
| 599 | __func__, rc); |
| 600 | goto err_reg_comp; |
| 601 | } |
| 602 | |
| 603 | dev_set_drvdata(dev, drv_data); |
| 604 | return rc; |
| 605 | |
| 606 | err_reg_comp: |
| 607 | msm_dai_slim_remove_dai_data(dev, drv_data); |
| 608 | |
| 609 | err_populate_dai: |
| 610 | devm_kfree(dev, drv_data); |
| 611 | |
| 612 | err_ret: |
| 613 | return rc; |
| 614 | } |
| 615 | |
| 616 | static int msm_dai_slim_dev_remove(struct slim_device *sdev) |
| 617 | { |
| 618 | snd_soc_unregister_component(&sdev->dev); |
| 619 | return 0; |
| 620 | } |
| 621 | |
| 622 | static const struct slim_device_id msm_dai_slim_dt_match[] = { |
| 623 | {SLIM_DEV_NAME, 0 }, |
| 624 | {} |
| 625 | }; |
| 626 | |
| 627 | static struct slim_driver msm_dai_slim_driver = { |
| 628 | .driver = { |
| 629 | .name = SLIM_DEV_NAME, |
| 630 | .owner = THIS_MODULE, |
| 631 | }, |
| 632 | .probe = msm_dai_slim_dev_probe, |
| 633 | .remove = msm_dai_slim_dev_remove, |
| 634 | .id_table = msm_dai_slim_dt_match, |
| 635 | }; |
| 636 | |
Laxminath Kasam | 8b1366a | 2017-10-05 01:44:16 +0530 | [diff] [blame] | 637 | int __init msm_dai_slim_init(void) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 638 | { |
| 639 | int rc; |
| 640 | |
| 641 | rc = slim_driver_register(&msm_dai_slim_driver); |
| 642 | if (rc) |
| 643 | pr_err("%s: failed to register with slimbus driver rc = %d", |
| 644 | __func__, rc); |
| 645 | return rc; |
| 646 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 647 | |
Asish Bhattacharya | 5faacb3 | 2017-12-04 17:23:15 +0530 | [diff] [blame] | 648 | void msm_dai_slim_exit(void) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 649 | { |
Laxminath Kasam | 8b1366a | 2017-10-05 01:44:16 +0530 | [diff] [blame] | 650 | slim_driver_unregister(&msm_dai_slim_driver); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 651 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 652 | |
| 653 | /* Module information */ |
| 654 | MODULE_DESCRIPTION("Slimbus apps-owned channel handling driver"); |
| 655 | MODULE_LICENSE("GPL v2"); |