Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) STMicroelectronics SA 2015 |
| 3 | * Authors: Arnaud Pouliquen <arnaud.pouliquen@st.com> |
| 4 | * for STMicroelectronics. |
| 5 | * License terms: GNU General Public License (GPL), version 2 |
| 6 | */ |
| 7 | |
| 8 | #include <linux/clk.h> |
| 9 | #include <linux/delay.h> |
| 10 | #include <linux/io.h> |
| 11 | |
| 12 | #include <sound/soc.h> |
| 13 | |
| 14 | #include "uniperif.h" |
| 15 | |
| 16 | /* |
| 17 | * Note: snd_pcm_hardware is linked to DMA controller but is declared here to |
| 18 | * integrate unireader capability in term of rate and supported channels |
| 19 | */ |
kbuild test robot | f2da454 | 2015-07-17 07:44:09 +0800 | [diff] [blame] | 20 | static const struct snd_pcm_hardware uni_reader_pcm_hw = { |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 21 | .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 22 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP | |
| 23 | SNDRV_PCM_INFO_MMAP_VALID, |
| 24 | .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE, |
| 25 | |
| 26 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 27 | .rate_min = 8000, |
| 28 | .rate_max = 96000, |
| 29 | |
| 30 | .channels_min = 2, |
| 31 | .channels_max = 8, |
| 32 | |
| 33 | .periods_min = 2, |
| 34 | .periods_max = 48, |
| 35 | |
| 36 | .period_bytes_min = 128, |
| 37 | .period_bytes_max = 64 * PAGE_SIZE, |
| 38 | .buffer_bytes_max = 256 * PAGE_SIZE |
| 39 | }; |
| 40 | |
| 41 | /* |
| 42 | * uni_reader_irq_handler |
| 43 | * In case of error audio stream is stopped; stop action is protected via PCM |
| 44 | * stream lock to avoid race condition with trigger callback. |
| 45 | */ |
| 46 | static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id) |
| 47 | { |
| 48 | irqreturn_t ret = IRQ_NONE; |
| 49 | struct uniperif *reader = dev_id; |
| 50 | unsigned int status; |
| 51 | |
| 52 | if (reader->state == UNIPERIF_STATE_STOPPED) { |
| 53 | /* Unexpected IRQ: do nothing */ |
| 54 | dev_warn(reader->dev, "unexpected IRQ "); |
| 55 | return IRQ_HANDLED; |
| 56 | } |
| 57 | |
| 58 | /* Get interrupt status & clear them immediately */ |
| 59 | status = GET_UNIPERIF_ITS(reader); |
| 60 | SET_UNIPERIF_ITS_BCLR(reader, status); |
| 61 | |
| 62 | /* Check for fifo overflow error */ |
| 63 | if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(reader))) { |
| 64 | dev_err(reader->dev, "FIFO error detected"); |
| 65 | |
| 66 | snd_pcm_stream_lock(reader->substream); |
| 67 | snd_pcm_stop(reader->substream, SNDRV_PCM_STATE_XRUN); |
| 68 | snd_pcm_stream_unlock(reader->substream); |
| 69 | |
| 70 | return IRQ_HANDLED; |
| 71 | } |
| 72 | |
| 73 | return ret; |
| 74 | } |
| 75 | |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 76 | static int uni_reader_prepare_pcm(struct snd_pcm_runtime *runtime, |
| 77 | struct uniperif *reader) |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 78 | { |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 79 | int slot_width; |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 80 | |
| 81 | /* Force slot width to 32 in I2S mode */ |
| 82 | if ((reader->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) |
| 83 | == SND_SOC_DAIFMT_I2S) { |
| 84 | slot_width = 32; |
| 85 | } else { |
| 86 | switch (runtime->format) { |
| 87 | case SNDRV_PCM_FORMAT_S16_LE: |
| 88 | slot_width = 16; |
| 89 | break; |
| 90 | default: |
| 91 | slot_width = 32; |
| 92 | break; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /* Number of bits per subframe (i.e one channel sample) on input. */ |
| 97 | switch (slot_width) { |
| 98 | case 32: |
| 99 | SET_UNIPERIF_I2S_FMT_NBIT_32(reader); |
| 100 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(reader); |
| 101 | break; |
| 102 | case 16: |
| 103 | SET_UNIPERIF_I2S_FMT_NBIT_16(reader); |
| 104 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(reader); |
| 105 | break; |
| 106 | default: |
| 107 | dev_err(reader->dev, "subframe format not supported"); |
| 108 | return -EINVAL; |
| 109 | } |
| 110 | |
| 111 | /* Configure data memory format */ |
| 112 | switch (runtime->format) { |
| 113 | case SNDRV_PCM_FORMAT_S16_LE: |
| 114 | /* One data word contains two samples */ |
| 115 | SET_UNIPERIF_CONFIG_MEM_FMT_16_16(reader); |
| 116 | break; |
| 117 | |
| 118 | case SNDRV_PCM_FORMAT_S32_LE: |
| 119 | /* |
| 120 | * Actually "16 bits/0 bits" means "32/28/24/20/18/16 bits |
| 121 | * on the MSB then zeros (if less than 32 bytes)"... |
| 122 | */ |
| 123 | SET_UNIPERIF_CONFIG_MEM_FMT_16_0(reader); |
| 124 | break; |
| 125 | |
| 126 | default: |
| 127 | dev_err(reader->dev, "format not supported"); |
| 128 | return -EINVAL; |
| 129 | } |
| 130 | |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 131 | /* Number of channels must be even */ |
| 132 | if ((runtime->channels % 2) || (runtime->channels < 2) || |
| 133 | (runtime->channels > 10)) { |
| 134 | dev_err(reader->dev, "%s: invalid nb of channels", __func__); |
| 135 | return -EINVAL; |
| 136 | } |
| 137 | |
| 138 | SET_UNIPERIF_I2S_FMT_NUM_CH(reader, runtime->channels / 2); |
| 139 | SET_UNIPERIF_I2S_FMT_ORDER_MSB(reader); |
| 140 | |
| 141 | return 0; |
| 142 | } |
| 143 | |
| 144 | static int uni_reader_prepare_tdm(struct snd_pcm_runtime *runtime, |
| 145 | struct uniperif *reader) |
| 146 | { |
| 147 | int frame_size; /* user tdm frame size in bytes */ |
| 148 | /* default unip TDM_WORD_POS_X_Y */ |
| 149 | unsigned int word_pos[4] = { |
| 150 | 0x04060002, 0x0C0E080A, 0x14161012, 0x1C1E181A}; |
| 151 | |
| 152 | frame_size = sti_uniperiph_get_user_frame_size(runtime); |
| 153 | |
| 154 | /* fix 16/0 format */ |
| 155 | SET_UNIPERIF_CONFIG_MEM_FMT_16_0(reader); |
| 156 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(reader); |
| 157 | |
| 158 | /* number of words inserted on the TDM line */ |
| 159 | SET_UNIPERIF_I2S_FMT_NUM_CH(reader, frame_size / 4 / 2); |
| 160 | |
| 161 | SET_UNIPERIF_I2S_FMT_ORDER_MSB(reader); |
| 162 | SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader); |
| 163 | SET_UNIPERIF_TDM_ENABLE_TDM_ENABLE(reader); |
| 164 | |
| 165 | /* |
| 166 | * set the timeslots allocation for words in FIFO |
| 167 | * |
| 168 | * HW bug: (LSB word < MSB word) => this config is not possible |
| 169 | * So if we want (LSB word < MSB) word, then it shall be |
| 170 | * handled by user |
| 171 | */ |
| 172 | sti_uniperiph_get_tdm_word_pos(reader, word_pos); |
| 173 | SET_UNIPERIF_TDM_WORD_POS(reader, 1_2, word_pos[WORD_1_2]); |
| 174 | SET_UNIPERIF_TDM_WORD_POS(reader, 3_4, word_pos[WORD_3_4]); |
| 175 | SET_UNIPERIF_TDM_WORD_POS(reader, 5_6, word_pos[WORD_5_6]); |
| 176 | SET_UNIPERIF_TDM_WORD_POS(reader, 7_8, word_pos[WORD_7_8]); |
| 177 | |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | static int uni_reader_prepare(struct snd_pcm_substream *substream, |
| 182 | struct snd_soc_dai *dai) |
| 183 | { |
| 184 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 185 | struct uniperif *reader = priv->dai_data.uni; |
| 186 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 187 | int transfer_size, trigger_limit, ret; |
| 188 | int count = 10; |
| 189 | |
| 190 | /* The reader should be stopped */ |
| 191 | if (reader->state != UNIPERIF_STATE_STOPPED) { |
| 192 | dev_err(reader->dev, "%s: invalid reader state %d", __func__, |
| 193 | reader->state); |
| 194 | return -EINVAL; |
| 195 | } |
| 196 | |
| 197 | /* Calculate transfer size (in fifo cells and bytes) for frame count */ |
| 198 | if (reader->info->type == SND_ST_UNIPERIF_TYPE_TDM) { |
| 199 | /* transfer size = unip frame size (in 32 bits FIFO cell) */ |
| 200 | transfer_size = |
| 201 | sti_uniperiph_get_user_frame_size(runtime) / 4; |
| 202 | } else { |
| 203 | transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES; |
| 204 | } |
| 205 | |
| 206 | /* Calculate number of empty cells available before asserting DREQ */ |
| 207 | if (reader->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) |
| 208 | trigger_limit = UNIPERIF_FIFO_SIZE - transfer_size; |
| 209 | else |
| 210 | /* |
| 211 | * Since SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0 |
| 212 | * FDMA_TRIGGER_LIMIT also controls when the state switches |
| 213 | * from OFF or STANDBY to AUDIO DATA. |
| 214 | */ |
| 215 | trigger_limit = transfer_size; |
| 216 | |
| 217 | /* Trigger limit must be an even number */ |
| 218 | if ((!trigger_limit % 2) || |
| 219 | (trigger_limit != 1 && transfer_size % 2) || |
| 220 | (trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(reader))) { |
| 221 | dev_err(reader->dev, "invalid trigger limit %d", trigger_limit); |
| 222 | return -EINVAL; |
| 223 | } |
| 224 | |
| 225 | SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(reader, trigger_limit); |
| 226 | |
| 227 | if (UNIPERIF_TYPE_IS_TDM(reader)) |
| 228 | ret = uni_reader_prepare_tdm(runtime, reader); |
| 229 | else |
| 230 | ret = uni_reader_prepare_pcm(runtime, reader); |
| 231 | if (ret) |
| 232 | return ret; |
| 233 | |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 234 | switch (reader->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 235 | case SND_SOC_DAIFMT_I2S: |
| 236 | SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader); |
| 237 | SET_UNIPERIF_I2S_FMT_PADDING_I2S_MODE(reader); |
| 238 | break; |
| 239 | case SND_SOC_DAIFMT_LEFT_J: |
| 240 | SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader); |
| 241 | SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(reader); |
| 242 | break; |
| 243 | case SND_SOC_DAIFMT_RIGHT_J: |
| 244 | SET_UNIPERIF_I2S_FMT_ALIGN_RIGHT(reader); |
| 245 | SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(reader); |
| 246 | break; |
| 247 | default: |
| 248 | dev_err(reader->dev, "format not supported"); |
| 249 | return -EINVAL; |
| 250 | } |
| 251 | |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 252 | /* Data clocking (changing) on the rising/falling edge */ |
| 253 | switch (reader->daifmt & SND_SOC_DAIFMT_INV_MASK) { |
| 254 | case SND_SOC_DAIFMT_NB_NF: |
| 255 | SET_UNIPERIF_I2S_FMT_LR_POL_LOW(reader); |
| 256 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(reader); |
| 257 | break; |
| 258 | case SND_SOC_DAIFMT_NB_IF: |
| 259 | SET_UNIPERIF_I2S_FMT_LR_POL_HIG(reader); |
| 260 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(reader); |
| 261 | break; |
| 262 | case SND_SOC_DAIFMT_IB_NF: |
| 263 | SET_UNIPERIF_I2S_FMT_LR_POL_LOW(reader); |
| 264 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(reader); |
| 265 | break; |
| 266 | case SND_SOC_DAIFMT_IB_IF: |
| 267 | SET_UNIPERIF_I2S_FMT_LR_POL_HIG(reader); |
| 268 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(reader); |
| 269 | break; |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 270 | } |
| 271 | |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 272 | /* Clear any pending interrupts */ |
| 273 | SET_UNIPERIF_ITS_BCLR(reader, GET_UNIPERIF_ITS(reader)); |
| 274 | |
| 275 | SET_UNIPERIF_I2S_FMT_NO_OF_SAMPLES_TO_READ(reader, 0); |
| 276 | |
| 277 | /* Set the interrupt mask */ |
| 278 | SET_UNIPERIF_ITM_BSET_DMA_ERROR(reader); |
| 279 | SET_UNIPERIF_ITM_BSET_FIFO_ERROR(reader); |
| 280 | SET_UNIPERIF_ITM_BSET_MEM_BLK_READ(reader); |
| 281 | |
| 282 | /* Enable underflow recovery interrupts */ |
| 283 | if (reader->info->underflow_enabled) { |
| 284 | SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(reader); |
| 285 | SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(reader); |
| 286 | } |
| 287 | |
| 288 | /* Reset uniperipheral reader */ |
| 289 | SET_UNIPERIF_SOFT_RST_SOFT_RST(reader); |
| 290 | |
| 291 | while (GET_UNIPERIF_SOFT_RST_SOFT_RST(reader)) { |
| 292 | udelay(5); |
| 293 | count--; |
| 294 | } |
| 295 | if (!count) { |
| 296 | dev_err(reader->dev, "Failed to reset uniperif"); |
| 297 | return -EIO; |
| 298 | } |
| 299 | |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | static int uni_reader_start(struct uniperif *reader) |
| 304 | { |
| 305 | /* The reader should be stopped */ |
| 306 | if (reader->state != UNIPERIF_STATE_STOPPED) { |
| 307 | dev_err(reader->dev, "%s: invalid reader state", __func__); |
| 308 | return -EINVAL; |
| 309 | } |
| 310 | |
| 311 | /* Enable reader interrupts (and clear possible stalled ones) */ |
| 312 | SET_UNIPERIF_ITS_BCLR_FIFO_ERROR(reader); |
| 313 | SET_UNIPERIF_ITM_BSET_FIFO_ERROR(reader); |
| 314 | |
| 315 | /* Launch the reader */ |
| 316 | SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(reader); |
| 317 | |
| 318 | /* Update state to started */ |
| 319 | reader->state = UNIPERIF_STATE_STARTED; |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | static int uni_reader_stop(struct uniperif *reader) |
| 324 | { |
| 325 | /* The reader should not be in stopped state */ |
| 326 | if (reader->state == UNIPERIF_STATE_STOPPED) { |
| 327 | dev_err(reader->dev, "%s: invalid reader state", __func__); |
| 328 | return -EINVAL; |
| 329 | } |
| 330 | |
| 331 | /* Turn the reader off */ |
| 332 | SET_UNIPERIF_CTRL_OPERATION_OFF(reader); |
| 333 | |
| 334 | /* Disable interrupts */ |
| 335 | SET_UNIPERIF_ITM_BCLR(reader, GET_UNIPERIF_ITM(reader)); |
| 336 | |
| 337 | /* Update state to stopped and return */ |
| 338 | reader->state = UNIPERIF_STATE_STOPPED; |
| 339 | |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | static int uni_reader_trigger(struct snd_pcm_substream *substream, |
| 344 | int cmd, struct snd_soc_dai *dai) |
| 345 | { |
| 346 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 347 | struct uniperif *reader = priv->dai_data.uni; |
| 348 | |
| 349 | switch (cmd) { |
| 350 | case SNDRV_PCM_TRIGGER_START: |
| 351 | return uni_reader_start(reader); |
| 352 | case SNDRV_PCM_TRIGGER_STOP: |
| 353 | return uni_reader_stop(reader); |
| 354 | default: |
| 355 | return -EINVAL; |
| 356 | } |
| 357 | } |
| 358 | |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 359 | static int uni_reader_startup(struct snd_pcm_substream *substream, |
| 360 | struct snd_soc_dai *dai) |
| 361 | { |
| 362 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 363 | struct uniperif *reader = priv->dai_data.uni; |
| 364 | int ret; |
| 365 | |
| 366 | if (!UNIPERIF_TYPE_IS_TDM(reader)) |
| 367 | return 0; |
| 368 | |
| 369 | /* refine hw constraint in tdm mode */ |
| 370 | ret = snd_pcm_hw_rule_add(substream->runtime, 0, |
| 371 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 372 | sti_uniperiph_fix_tdm_chan, |
| 373 | reader, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 374 | -1); |
| 375 | if (ret < 0) |
| 376 | return ret; |
| 377 | |
| 378 | return snd_pcm_hw_rule_add(substream->runtime, 0, |
| 379 | SNDRV_PCM_HW_PARAM_FORMAT, |
| 380 | sti_uniperiph_fix_tdm_format, |
| 381 | reader, SNDRV_PCM_HW_PARAM_FORMAT, |
| 382 | -1); |
| 383 | } |
| 384 | |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 385 | static void uni_reader_shutdown(struct snd_pcm_substream *substream, |
| 386 | struct snd_soc_dai *dai) |
| 387 | { |
| 388 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 389 | struct uniperif *reader = priv->dai_data.uni; |
| 390 | |
| 391 | if (reader->state != UNIPERIF_STATE_STOPPED) { |
| 392 | /* Stop the reader */ |
| 393 | uni_reader_stop(reader); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | static int uni_reader_parse_dt(struct platform_device *pdev, |
| 398 | struct uniperif *reader) |
| 399 | { |
| 400 | struct uniperif_info *info; |
| 401 | struct device_node *node = pdev->dev.of_node; |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 402 | const char *mode; |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 403 | |
| 404 | /* Allocate memory for the info structure */ |
| 405 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
| 406 | if (!info) |
| 407 | return -ENOMEM; |
| 408 | |
Moise Gergaud | f9f5197 | 2015-11-19 14:54:08 +0100 | [diff] [blame] | 409 | if (of_property_read_u32(node, "st,version", &reader->ver) || |
Arnaud Pouliquen | 3a0e27d | 2015-09-10 09:45:55 +0200 | [diff] [blame] | 410 | reader->ver == SND_ST_UNIPERIF_VERSION_UNKNOWN) { |
| 411 | dev_err(&pdev->dev, "Unknown uniperipheral version "); |
| 412 | return -EINVAL; |
| 413 | } |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 414 | |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 415 | /* Read the device mode property */ |
| 416 | if (of_property_read_string(node, "st,mode", &mode)) { |
| 417 | dev_err(&pdev->dev, "uniperipheral mode not defined"); |
| 418 | return -EINVAL; |
| 419 | } |
| 420 | |
| 421 | if (strcasecmp(mode, "tdm") == 0) |
| 422 | info->type = SND_ST_UNIPERIF_TYPE_TDM; |
| 423 | else |
| 424 | info->type = SND_ST_UNIPERIF_TYPE_PCM; |
| 425 | |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 426 | /* Save the info structure */ |
| 427 | reader->info = info; |
| 428 | |
| 429 | return 0; |
| 430 | } |
| 431 | |
kbuild test robot | f2da454 | 2015-07-17 07:44:09 +0800 | [diff] [blame] | 432 | static const struct snd_soc_dai_ops uni_reader_dai_ops = { |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 433 | .startup = uni_reader_startup, |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 434 | .shutdown = uni_reader_shutdown, |
| 435 | .prepare = uni_reader_prepare, |
| 436 | .trigger = uni_reader_trigger, |
| 437 | .hw_params = sti_uniperiph_dai_hw_params, |
| 438 | .set_fmt = sti_uniperiph_dai_set_fmt, |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 439 | .set_tdm_slot = sti_uniperiph_set_tdm_slot |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 440 | }; |
| 441 | |
| 442 | int uni_reader_init(struct platform_device *pdev, |
| 443 | struct uniperif *reader) |
| 444 | { |
| 445 | int ret = 0; |
| 446 | |
| 447 | reader->dev = &pdev->dev; |
| 448 | reader->state = UNIPERIF_STATE_STOPPED; |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 449 | reader->dai_ops = &uni_reader_dai_ops; |
| 450 | |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 451 | ret = uni_reader_parse_dt(pdev, reader); |
| 452 | if (ret < 0) { |
| 453 | dev_err(reader->dev, "Failed to parse DeviceTree"); |
| 454 | return ret; |
| 455 | } |
| 456 | |
Moise Gergaud | 82d4eb9 | 2016-04-07 11:25:36 +0200 | [diff] [blame] | 457 | if (UNIPERIF_TYPE_IS_TDM(reader)) |
| 458 | reader->hw = &uni_tdm_hw; |
| 459 | else |
| 460 | reader->hw = &uni_reader_pcm_hw; |
| 461 | |
Arnaud Pouliquen | c3a0003 | 2015-07-16 11:36:03 +0200 | [diff] [blame] | 462 | ret = devm_request_irq(&pdev->dev, reader->irq, |
| 463 | uni_reader_irq_handler, IRQF_SHARED, |
| 464 | dev_name(&pdev->dev), reader); |
| 465 | if (ret < 0) { |
| 466 | dev_err(&pdev->dev, "Failed to request IRQ"); |
| 467 | return -EBUSY; |
| 468 | } |
| 469 | |
| 470 | return 0; |
| 471 | } |
| 472 | EXPORT_SYMBOL_GPL(uni_reader_init); |