Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +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 | #include <linux/mfd/syscon.h> |
| 12 | |
| 13 | #include <sound/asoundef.h> |
| 14 | #include <sound/soc.h> |
| 15 | |
| 16 | #include "uniperif.h" |
| 17 | |
| 18 | /* |
| 19 | * Some hardware-related definitions |
| 20 | */ |
| 21 | |
| 22 | /* sys config registers definitions */ |
| 23 | #define SYS_CFG_AUDIO_GLUE 0xA4 |
| 24 | #define SYS_CFG_AUDI0_GLUE_PCM_CLKX 8 |
| 25 | |
| 26 | /* |
| 27 | * Driver specific types. |
| 28 | */ |
| 29 | #define UNIPERIF_PLAYER_TYPE_IS_HDMI(p) \ |
| 30 | ((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_HDMI) |
| 31 | #define UNIPERIF_PLAYER_TYPE_IS_PCM(p) \ |
| 32 | ((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_PCM) |
| 33 | #define UNIPERIF_PLAYER_TYPE_IS_SPDIF(p) \ |
| 34 | ((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF) |
| 35 | #define UNIPERIF_PLAYER_TYPE_IS_IEC958(p) \ |
| 36 | (UNIPERIF_PLAYER_TYPE_IS_HDMI(p) || \ |
| 37 | UNIPERIF_PLAYER_TYPE_IS_SPDIF(p)) |
| 38 | |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 39 | #define UNIPERIF_PLAYER_CLK_ADJ_MIN -999999 |
| 40 | #define UNIPERIF_PLAYER_CLK_ADJ_MAX 1000000 |
| 41 | |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 42 | /* |
| 43 | * Note: snd_pcm_hardware is linked to DMA controller but is declared here to |
| 44 | * integrate DAI_CPU capability in term of rate and supported channels |
| 45 | */ |
kbuild test robot | f2da454 | 2015-07-17 07:44:09 +0800 | [diff] [blame] | 46 | static const struct snd_pcm_hardware uni_player_pcm_hw = { |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 47 | .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 48 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP | |
| 49 | SNDRV_PCM_INFO_MMAP_VALID, |
| 50 | .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE, |
| 51 | |
| 52 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 53 | .rate_min = 8000, |
| 54 | .rate_max = 192000, |
| 55 | |
| 56 | .channels_min = 2, |
| 57 | .channels_max = 8, |
| 58 | |
| 59 | .periods_min = 2, |
| 60 | .periods_max = 48, |
| 61 | |
| 62 | .period_bytes_min = 128, |
| 63 | .period_bytes_max = 64 * PAGE_SIZE, |
| 64 | .buffer_bytes_max = 256 * PAGE_SIZE |
| 65 | }; |
| 66 | |
| 67 | static inline int reset_player(struct uniperif *player) |
| 68 | { |
| 69 | int count = 10; |
| 70 | |
| 71 | if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) { |
| 72 | while (GET_UNIPERIF_SOFT_RST_SOFT_RST(player) && count) { |
| 73 | udelay(5); |
| 74 | count--; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | if (!count) { |
| 79 | dev_err(player->dev, "Failed to reset uniperif"); |
| 80 | return -EIO; |
| 81 | } |
| 82 | |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | /* |
| 87 | * uni_player_irq_handler |
| 88 | * In case of error audio stream is stopped; stop action is protected via PCM |
| 89 | * stream lock to avoid race condition with trigger callback. |
| 90 | */ |
| 91 | static irqreturn_t uni_player_irq_handler(int irq, void *dev_id) |
| 92 | { |
| 93 | irqreturn_t ret = IRQ_NONE; |
| 94 | struct uniperif *player = dev_id; |
| 95 | unsigned int status; |
| 96 | unsigned int tmp; |
| 97 | |
| 98 | if (player->state == UNIPERIF_STATE_STOPPED) { |
| 99 | /* Unexpected IRQ: do nothing */ |
| 100 | return IRQ_NONE; |
| 101 | } |
| 102 | |
| 103 | /* Get interrupt status & clear them immediately */ |
| 104 | status = GET_UNIPERIF_ITS(player); |
| 105 | SET_UNIPERIF_ITS_BCLR(player, status); |
| 106 | |
| 107 | /* Check for fifo error (underrun) */ |
| 108 | if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(player))) { |
| 109 | dev_err(player->dev, "FIFO underflow error detected"); |
| 110 | |
| 111 | /* Interrupt is just for information when underflow recovery */ |
| 112 | if (player->info->underflow_enabled) { |
| 113 | /* Update state to underflow */ |
| 114 | player->state = UNIPERIF_STATE_UNDERFLOW; |
| 115 | |
| 116 | } else { |
| 117 | /* Disable interrupt so doesn't continually fire */ |
| 118 | SET_UNIPERIF_ITM_BCLR_FIFO_ERROR(player); |
| 119 | |
| 120 | /* Stop the player */ |
| 121 | snd_pcm_stream_lock(player->substream); |
| 122 | snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN); |
| 123 | snd_pcm_stream_unlock(player->substream); |
| 124 | } |
| 125 | |
| 126 | ret = IRQ_HANDLED; |
| 127 | } |
| 128 | |
| 129 | /* Check for dma error (overrun) */ |
| 130 | if (unlikely(status & UNIPERIF_ITS_DMA_ERROR_MASK(player))) { |
| 131 | dev_err(player->dev, "DMA error detected"); |
| 132 | |
| 133 | /* Disable interrupt so doesn't continually fire */ |
| 134 | SET_UNIPERIF_ITM_BCLR_DMA_ERROR(player); |
| 135 | |
| 136 | /* Stop the player */ |
| 137 | snd_pcm_stream_lock(player->substream); |
| 138 | snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN); |
| 139 | snd_pcm_stream_unlock(player->substream); |
| 140 | |
| 141 | ret = IRQ_HANDLED; |
| 142 | } |
| 143 | |
| 144 | /* Check for underflow recovery done */ |
| 145 | if (unlikely(status & UNIPERIF_ITM_UNDERFLOW_REC_DONE_MASK(player))) { |
| 146 | if (!player->info->underflow_enabled) { |
| 147 | dev_err(player->dev, "unexpected Underflow recovering"); |
| 148 | return -EPERM; |
| 149 | } |
| 150 | /* Read the underflow recovery duration */ |
| 151 | tmp = GET_UNIPERIF_STATUS_1_UNDERFLOW_DURATION(player); |
| 152 | |
| 153 | /* Clear the underflow recovery duration */ |
| 154 | SET_UNIPERIF_BIT_CONTROL_CLR_UNDERFLOW_DURATION(player); |
| 155 | |
| 156 | /* Update state to started */ |
| 157 | player->state = UNIPERIF_STATE_STARTED; |
| 158 | |
| 159 | ret = IRQ_HANDLED; |
| 160 | } |
| 161 | |
| 162 | /* Check if underflow recovery failed */ |
| 163 | if (unlikely(status & |
| 164 | UNIPERIF_ITM_UNDERFLOW_REC_FAILED_MASK(player))) { |
| 165 | dev_err(player->dev, "Underflow recovery failed"); |
| 166 | |
| 167 | /* Stop the player */ |
| 168 | snd_pcm_stream_lock(player->substream); |
| 169 | snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN); |
| 170 | snd_pcm_stream_unlock(player->substream); |
| 171 | |
| 172 | ret = IRQ_HANDLED; |
| 173 | } |
| 174 | |
| 175 | return ret; |
| 176 | } |
| 177 | |
kbuild test robot | f2da454 | 2015-07-17 07:44:09 +0800 | [diff] [blame] | 178 | static int uni_player_clk_set_rate(struct uniperif *player, unsigned long rate) |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 179 | { |
| 180 | int rate_adjusted, rate_achieved, delta, ret; |
| 181 | int adjustment = player->clk_adj; |
| 182 | |
| 183 | /* |
| 184 | * a |
| 185 | * F = f + --------- * f = f + d |
| 186 | * 1000000 |
| 187 | * |
| 188 | * a |
| 189 | * d = --------- * f |
| 190 | * 1000000 |
| 191 | * |
| 192 | * where: |
| 193 | * f - nominal rate |
| 194 | * a - adjustment in ppm (parts per milion) |
| 195 | * F - rate to be set in synthesizer |
| 196 | * d - delta (difference) between f and F |
| 197 | */ |
| 198 | if (adjustment < 0) { |
| 199 | /* div64_64 operates on unsigned values... */ |
| 200 | delta = -1; |
| 201 | adjustment = -adjustment; |
| 202 | } else { |
| 203 | delta = 1; |
| 204 | } |
| 205 | /* 500000 ppm is 0.5, which is used to round up values */ |
| 206 | delta *= (int)div64_u64((uint64_t)rate * |
| 207 | (uint64_t)adjustment + 500000, 1000000); |
| 208 | rate_adjusted = rate + delta; |
| 209 | |
| 210 | /* Adjusted rate should never be == 0 */ |
| 211 | if (!rate_adjusted) |
| 212 | return -EINVAL; |
| 213 | |
| 214 | ret = clk_set_rate(player->clk, rate_adjusted); |
| 215 | if (ret < 0) |
| 216 | return ret; |
| 217 | |
| 218 | rate_achieved = clk_get_rate(player->clk); |
| 219 | if (!rate_achieved) |
| 220 | /* If value is 0 means that clock or parent not valid */ |
| 221 | return -EINVAL; |
| 222 | |
| 223 | /* |
| 224 | * Using ALSA's adjustment control, we can modify the rate to be up |
| 225 | * to twice as much as requested, but no more |
| 226 | */ |
| 227 | delta = rate_achieved - rate; |
| 228 | if (delta < 0) { |
| 229 | /* div64_64 operates on unsigned values... */ |
| 230 | delta = -delta; |
| 231 | adjustment = -1; |
| 232 | } else { |
| 233 | adjustment = 1; |
| 234 | } |
| 235 | /* Frequency/2 is added to round up result */ |
| 236 | adjustment *= (int)div64_u64((uint64_t)delta * 1000000 + rate / 2, |
| 237 | rate); |
| 238 | player->clk_adj = adjustment; |
| 239 | return 0; |
| 240 | } |
| 241 | |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 242 | static void uni_player_set_channel_status(struct uniperif *player, |
| 243 | struct snd_pcm_runtime *runtime) |
| 244 | { |
| 245 | int n; |
| 246 | unsigned int status; |
| 247 | |
| 248 | /* |
| 249 | * Some AVRs and TVs require the channel status to contain a correct |
| 250 | * sampling frequency. If no sample rate is already specified, then |
| 251 | * set one. |
| 252 | */ |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 253 | mutex_lock(&player->ctrl_lock); |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 254 | if (runtime && (player->stream_settings.iec958.status[3] |
| 255 | == IEC958_AES3_CON_FS_NOTID)) { |
| 256 | switch (runtime->rate) { |
| 257 | case 22050: |
| 258 | player->stream_settings.iec958.status[3] = |
| 259 | IEC958_AES3_CON_FS_22050; |
| 260 | break; |
| 261 | case 44100: |
| 262 | player->stream_settings.iec958.status[3] = |
| 263 | IEC958_AES3_CON_FS_44100; |
| 264 | break; |
| 265 | case 88200: |
| 266 | player->stream_settings.iec958.status[3] = |
| 267 | IEC958_AES3_CON_FS_88200; |
| 268 | break; |
| 269 | case 176400: |
| 270 | player->stream_settings.iec958.status[3] = |
| 271 | IEC958_AES3_CON_FS_176400; |
| 272 | break; |
| 273 | case 24000: |
| 274 | player->stream_settings.iec958.status[3] = |
| 275 | IEC958_AES3_CON_FS_24000; |
| 276 | break; |
| 277 | case 48000: |
| 278 | player->stream_settings.iec958.status[3] = |
| 279 | IEC958_AES3_CON_FS_48000; |
| 280 | break; |
| 281 | case 96000: |
| 282 | player->stream_settings.iec958.status[3] = |
| 283 | IEC958_AES3_CON_FS_96000; |
| 284 | break; |
| 285 | case 192000: |
| 286 | player->stream_settings.iec958.status[3] = |
| 287 | IEC958_AES3_CON_FS_192000; |
| 288 | break; |
| 289 | case 32000: |
| 290 | player->stream_settings.iec958.status[3] = |
| 291 | IEC958_AES3_CON_FS_32000; |
| 292 | break; |
| 293 | default: |
| 294 | /* Mark as sampling frequency not indicated */ |
| 295 | player->stream_settings.iec958.status[3] = |
| 296 | IEC958_AES3_CON_FS_NOTID; |
| 297 | break; |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | /* Audio mode: |
| 302 | * Use audio mode status to select PCM or encoded mode |
| 303 | */ |
| 304 | if (player->stream_settings.iec958.status[0] & IEC958_AES0_NONAUDIO) |
| 305 | player->stream_settings.encoding_mode = |
| 306 | UNIPERIF_IEC958_ENCODING_MODE_ENCODED; |
| 307 | else |
| 308 | player->stream_settings.encoding_mode = |
| 309 | UNIPERIF_IEC958_ENCODING_MODE_PCM; |
| 310 | |
| 311 | if (player->stream_settings.encoding_mode == |
| 312 | UNIPERIF_IEC958_ENCODING_MODE_PCM) |
| 313 | /* Clear user validity bits */ |
| 314 | SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0); |
| 315 | else |
| 316 | /* Set user validity bits */ |
| 317 | SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 1); |
| 318 | |
| 319 | /* Program the new channel status */ |
| 320 | for (n = 0; n < 6; ++n) { |
| 321 | status = |
| 322 | player->stream_settings.iec958.status[0 + (n * 4)] & 0xf; |
| 323 | status |= |
| 324 | player->stream_settings.iec958.status[1 + (n * 4)] << 8; |
| 325 | status |= |
| 326 | player->stream_settings.iec958.status[2 + (n * 4)] << 16; |
| 327 | status |= |
| 328 | player->stream_settings.iec958.status[3 + (n * 4)] << 24; |
| 329 | SET_UNIPERIF_CHANNEL_STA_REGN(player, n, status); |
| 330 | } |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 331 | mutex_unlock(&player->ctrl_lock); |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 332 | |
| 333 | /* Update the channel status */ |
| 334 | if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) |
| 335 | SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player); |
| 336 | else |
| 337 | SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player); |
| 338 | } |
| 339 | |
| 340 | static int uni_player_prepare_iec958(struct uniperif *player, |
| 341 | struct snd_pcm_runtime *runtime) |
| 342 | { |
| 343 | int clk_div; |
| 344 | |
| 345 | clk_div = player->mclk / runtime->rate; |
| 346 | |
| 347 | /* Oversampling must be multiple of 128 as iec958 frame is 32-bits */ |
| 348 | if ((clk_div % 128) || (clk_div <= 0)) { |
| 349 | dev_err(player->dev, "%s: invalid clk_div %d", |
| 350 | __func__, clk_div); |
| 351 | return -EINVAL; |
| 352 | } |
| 353 | |
| 354 | switch (runtime->format) { |
| 355 | case SNDRV_PCM_FORMAT_S16_LE: |
| 356 | /* 16/16 memory format */ |
| 357 | SET_UNIPERIF_CONFIG_MEM_FMT_16_16(player); |
| 358 | /* 16-bits per sub-frame */ |
| 359 | SET_UNIPERIF_I2S_FMT_NBIT_32(player); |
| 360 | /* Set 16-bit sample precision */ |
| 361 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player); |
| 362 | break; |
| 363 | case SNDRV_PCM_FORMAT_S32_LE: |
| 364 | /* 16/0 memory format */ |
| 365 | SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player); |
| 366 | /* 32-bits per sub-frame */ |
| 367 | SET_UNIPERIF_I2S_FMT_NBIT_32(player); |
| 368 | /* Set 24-bit sample precision */ |
| 369 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_24(player); |
| 370 | break; |
| 371 | default: |
| 372 | dev_err(player->dev, "format not supported"); |
| 373 | return -EINVAL; |
| 374 | } |
| 375 | |
| 376 | /* Set parity to be calculated by the hardware */ |
| 377 | SET_UNIPERIF_CONFIG_PARITY_CNTR_BY_HW(player); |
| 378 | |
| 379 | /* Set channel status bits to be inserted by the hardware */ |
| 380 | SET_UNIPERIF_CONFIG_CHANNEL_STA_CNTR_BY_HW(player); |
| 381 | |
| 382 | /* Set user data bits to be inserted by the hardware */ |
| 383 | SET_UNIPERIF_CONFIG_USER_DAT_CNTR_BY_HW(player); |
| 384 | |
| 385 | /* Set validity bits to be inserted by the hardware */ |
| 386 | SET_UNIPERIF_CONFIG_VALIDITY_DAT_CNTR_BY_HW(player); |
| 387 | |
| 388 | /* Set full software control to disabled */ |
| 389 | SET_UNIPERIF_CONFIG_SPDIF_SW_CTRL_DISABLE(player); |
| 390 | |
| 391 | SET_UNIPERIF_CTRL_ZERO_STUFF_HW(player); |
| 392 | |
| 393 | /* Update the channel status */ |
| 394 | uni_player_set_channel_status(player, runtime); |
| 395 | |
| 396 | /* Clear the user validity user bits */ |
| 397 | SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0); |
| 398 | |
| 399 | /* Disable one-bit audio mode */ |
| 400 | SET_UNIPERIF_CONFIG_ONE_BIT_AUD_DISABLE(player); |
| 401 | |
| 402 | /* Enable consecutive frames repetition of Z preamble (not for HBRA) */ |
| 403 | SET_UNIPERIF_CONFIG_REPEAT_CHL_STS_ENABLE(player); |
| 404 | |
| 405 | /* Change to SUF0_SUBF1 and left/right channels swap! */ |
| 406 | SET_UNIPERIF_CONFIG_SUBFRAME_SEL_SUBF1_SUBF0(player); |
| 407 | |
| 408 | /* Set data output as MSB first */ |
| 409 | SET_UNIPERIF_I2S_FMT_ORDER_MSB(player); |
| 410 | |
| 411 | if (player->stream_settings.encoding_mode == |
| 412 | UNIPERIF_IEC958_ENCODING_MODE_ENCODED) |
| 413 | SET_UNIPERIF_CTRL_EXIT_STBY_ON_EOBLOCK_ON(player); |
| 414 | else |
| 415 | SET_UNIPERIF_CTRL_EXIT_STBY_ON_EOBLOCK_OFF(player); |
| 416 | |
| 417 | SET_UNIPERIF_I2S_FMT_NUM_CH(player, runtime->channels / 2); |
| 418 | |
| 419 | /* Set rounding to off */ |
| 420 | SET_UNIPERIF_CTRL_ROUNDING_OFF(player); |
| 421 | |
| 422 | /* Set clock divisor */ |
| 423 | SET_UNIPERIF_CTRL_DIVIDER(player, clk_div / 128); |
| 424 | |
| 425 | /* Set the spdif latency to not wait before starting player */ |
| 426 | SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player); |
| 427 | |
| 428 | /* |
| 429 | * Ensure iec958 formatting is off. It will be enabled in function |
| 430 | * uni_player_start() at the same time as the operation |
| 431 | * mode is set to work around a silicon issue. |
| 432 | */ |
| 433 | if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) |
| 434 | SET_UNIPERIF_CTRL_SPDIF_FMT_OFF(player); |
| 435 | else |
| 436 | SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player); |
| 437 | |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | static int uni_player_prepare_pcm(struct uniperif *player, |
| 442 | struct snd_pcm_runtime *runtime) |
| 443 | { |
| 444 | int output_frame_size, slot_width, clk_div; |
| 445 | |
| 446 | /* Force slot width to 32 in I2S mode (HW constraint) */ |
| 447 | if ((player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) == |
| 448 | SND_SOC_DAIFMT_I2S) { |
| 449 | slot_width = 32; |
| 450 | } else { |
| 451 | switch (runtime->format) { |
| 452 | case SNDRV_PCM_FORMAT_S16_LE: |
| 453 | slot_width = 16; |
| 454 | break; |
| 455 | default: |
| 456 | slot_width = 32; |
| 457 | break; |
| 458 | } |
| 459 | } |
| 460 | output_frame_size = slot_width * runtime->channels; |
| 461 | |
| 462 | clk_div = player->mclk / runtime->rate; |
| 463 | /* |
| 464 | * For 32 bits subframe clk_div must be a multiple of 128, |
| 465 | * for 16 bits must be a multiple of 64 |
| 466 | */ |
| 467 | if ((slot_width == 32) && (clk_div % 128)) { |
| 468 | dev_err(player->dev, "%s: invalid clk_div", __func__); |
| 469 | return -EINVAL; |
| 470 | } |
| 471 | |
| 472 | if ((slot_width == 16) && (clk_div % 64)) { |
| 473 | dev_err(player->dev, "%s: invalid clk_div", __func__); |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | |
| 477 | /* |
| 478 | * Number of bits per subframe (which is one channel sample) |
| 479 | * on output - Transfer 16 or 32 bits from FIFO |
| 480 | */ |
| 481 | switch (slot_width) { |
| 482 | case 32: |
| 483 | SET_UNIPERIF_I2S_FMT_NBIT_32(player); |
| 484 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(player); |
| 485 | break; |
| 486 | case 16: |
| 487 | SET_UNIPERIF_I2S_FMT_NBIT_16(player); |
| 488 | SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player); |
| 489 | break; |
| 490 | default: |
| 491 | dev_err(player->dev, "subframe format not supported"); |
| 492 | return -EINVAL; |
| 493 | } |
| 494 | |
| 495 | /* Configure data memory format */ |
| 496 | switch (runtime->format) { |
| 497 | case SNDRV_PCM_FORMAT_S16_LE: |
| 498 | /* One data word contains two samples */ |
| 499 | SET_UNIPERIF_CONFIG_MEM_FMT_16_16(player); |
| 500 | break; |
| 501 | |
| 502 | case SNDRV_PCM_FORMAT_S32_LE: |
| 503 | /* |
| 504 | * Actually "16 bits/0 bits" means "32/28/24/20/18/16 bits |
| 505 | * on the left than zeros (if less than 32 bytes)"... ;-) |
| 506 | */ |
| 507 | SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player); |
| 508 | break; |
| 509 | |
| 510 | default: |
| 511 | dev_err(player->dev, "format not supported"); |
| 512 | return -EINVAL; |
| 513 | } |
| 514 | |
| 515 | /* Set rounding to off */ |
| 516 | SET_UNIPERIF_CTRL_ROUNDING_OFF(player); |
| 517 | |
| 518 | /* Set clock divisor */ |
| 519 | SET_UNIPERIF_CTRL_DIVIDER(player, clk_div / (2 * output_frame_size)); |
| 520 | |
| 521 | /* Number of channelsmust be even*/ |
| 522 | if ((runtime->channels % 2) || (runtime->channels < 2) || |
| 523 | (runtime->channels > 10)) { |
| 524 | dev_err(player->dev, "%s: invalid nb of channels", __func__); |
| 525 | return -EINVAL; |
| 526 | } |
| 527 | |
| 528 | SET_UNIPERIF_I2S_FMT_NUM_CH(player, runtime->channels / 2); |
| 529 | |
| 530 | /* Set 1-bit audio format to disabled */ |
| 531 | SET_UNIPERIF_CONFIG_ONE_BIT_AUD_DISABLE(player); |
| 532 | |
| 533 | SET_UNIPERIF_I2S_FMT_ORDER_MSB(player); |
| 534 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player); |
| 535 | |
| 536 | /* No iec958 formatting as outputting to DAC */ |
| 537 | SET_UNIPERIF_CTRL_SPDIF_FMT_OFF(player); |
| 538 | |
| 539 | return 0; |
| 540 | } |
| 541 | |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 542 | /* |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 543 | * ALSA uniperipheral iec958 controls |
| 544 | */ |
| 545 | static int uni_player_ctl_iec958_info(struct snd_kcontrol *kcontrol, |
| 546 | struct snd_ctl_elem_info *uinfo) |
| 547 | { |
| 548 | uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; |
| 549 | uinfo->count = 1; |
| 550 | |
| 551 | return 0; |
| 552 | } |
| 553 | |
| 554 | static int uni_player_ctl_iec958_get(struct snd_kcontrol *kcontrol, |
| 555 | struct snd_ctl_elem_value *ucontrol) |
| 556 | { |
| 557 | struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); |
| 558 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 559 | struct uniperif *player = priv->dai_data.uni; |
| 560 | struct snd_aes_iec958 *iec958 = &player->stream_settings.iec958; |
| 561 | |
| 562 | mutex_lock(&player->ctrl_lock); |
| 563 | ucontrol->value.iec958.status[0] = iec958->status[0]; |
| 564 | ucontrol->value.iec958.status[1] = iec958->status[1]; |
| 565 | ucontrol->value.iec958.status[2] = iec958->status[2]; |
| 566 | ucontrol->value.iec958.status[3] = iec958->status[3]; |
| 567 | mutex_unlock(&player->ctrl_lock); |
| 568 | return 0; |
| 569 | } |
| 570 | |
| 571 | static int uni_player_ctl_iec958_put(struct snd_kcontrol *kcontrol, |
| 572 | struct snd_ctl_elem_value *ucontrol) |
| 573 | { |
| 574 | struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); |
| 575 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 576 | struct uniperif *player = priv->dai_data.uni; |
| 577 | struct snd_aes_iec958 *iec958 = &player->stream_settings.iec958; |
| 578 | |
| 579 | mutex_lock(&player->ctrl_lock); |
| 580 | iec958->status[0] = ucontrol->value.iec958.status[0]; |
| 581 | iec958->status[1] = ucontrol->value.iec958.status[1]; |
| 582 | iec958->status[2] = ucontrol->value.iec958.status[2]; |
| 583 | iec958->status[3] = ucontrol->value.iec958.status[3]; |
| 584 | mutex_unlock(&player->ctrl_lock); |
| 585 | |
| 586 | uni_player_set_channel_status(player, NULL); |
| 587 | |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | static struct snd_kcontrol_new uni_player_iec958_ctl = { |
| 592 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, |
| 593 | .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), |
| 594 | .info = uni_player_ctl_iec958_info, |
| 595 | .get = uni_player_ctl_iec958_get, |
| 596 | .put = uni_player_ctl_iec958_put, |
| 597 | }; |
| 598 | |
| 599 | /* |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 600 | * uniperif rate adjustement control |
| 601 | */ |
| 602 | static int snd_sti_clk_adjustment_info(struct snd_kcontrol *kcontrol, |
| 603 | struct snd_ctl_elem_info *uinfo) |
| 604 | { |
| 605 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 606 | uinfo->count = 1; |
| 607 | uinfo->value.integer.min = UNIPERIF_PLAYER_CLK_ADJ_MIN; |
| 608 | uinfo->value.integer.max = UNIPERIF_PLAYER_CLK_ADJ_MAX; |
| 609 | uinfo->value.integer.step = 1; |
| 610 | |
| 611 | return 0; |
| 612 | } |
| 613 | |
| 614 | static int snd_sti_clk_adjustment_get(struct snd_kcontrol *kcontrol, |
| 615 | struct snd_ctl_elem_value *ucontrol) |
| 616 | { |
| 617 | struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); |
| 618 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 619 | struct uniperif *player = priv->dai_data.uni; |
| 620 | |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 621 | mutex_lock(&player->ctrl_lock); |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 622 | ucontrol->value.integer.value[0] = player->clk_adj; |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 623 | mutex_unlock(&player->ctrl_lock); |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 624 | |
| 625 | return 0; |
| 626 | } |
| 627 | |
| 628 | static int snd_sti_clk_adjustment_put(struct snd_kcontrol *kcontrol, |
| 629 | struct snd_ctl_elem_value *ucontrol) |
| 630 | { |
| 631 | struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); |
| 632 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 633 | struct uniperif *player = priv->dai_data.uni; |
| 634 | int ret = 0; |
| 635 | |
| 636 | if ((ucontrol->value.integer.value[0] < UNIPERIF_PLAYER_CLK_ADJ_MIN) || |
| 637 | (ucontrol->value.integer.value[0] > UNIPERIF_PLAYER_CLK_ADJ_MAX)) |
| 638 | return -EINVAL; |
| 639 | |
| 640 | mutex_lock(&player->ctrl_lock); |
| 641 | player->clk_adj = ucontrol->value.integer.value[0]; |
| 642 | |
| 643 | if (player->mclk) |
| 644 | ret = uni_player_clk_set_rate(player, player->mclk); |
| 645 | mutex_unlock(&player->ctrl_lock); |
| 646 | |
| 647 | return ret; |
| 648 | } |
| 649 | |
| 650 | static struct snd_kcontrol_new uni_player_clk_adj_ctl = { |
| 651 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, |
| 652 | .name = "PCM Playback Oversampling Freq. Adjustment", |
| 653 | .info = snd_sti_clk_adjustment_info, |
| 654 | .get = snd_sti_clk_adjustment_get, |
| 655 | .put = snd_sti_clk_adjustment_put, |
| 656 | }; |
| 657 | |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 658 | static struct snd_kcontrol_new *snd_sti_pcm_ctl[] = { |
| 659 | &uni_player_clk_adj_ctl, |
| 660 | }; |
| 661 | |
| 662 | static struct snd_kcontrol_new *snd_sti_iec_ctl[] = { |
| 663 | &uni_player_iec958_ctl, |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 664 | &uni_player_clk_adj_ctl, |
| 665 | }; |
| 666 | |
| 667 | static int uni_player_startup(struct snd_pcm_substream *substream, |
| 668 | struct snd_soc_dai *dai) |
| 669 | { |
| 670 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 671 | struct uniperif *player = priv->dai_data.uni; |
| 672 | |
| 673 | player->clk_adj = 0; |
| 674 | |
| 675 | return 0; |
| 676 | } |
| 677 | |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 678 | static int uni_player_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 679 | unsigned int freq, int dir) |
| 680 | { |
| 681 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 682 | struct uniperif *player = priv->dai_data.uni; |
Arnaud Pouliquen | ed6c75f | 2015-07-16 11:36:02 +0200 | [diff] [blame] | 683 | int ret; |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 684 | |
| 685 | if (dir == SND_SOC_CLOCK_IN) |
| 686 | return 0; |
| 687 | |
| 688 | if (clk_id != 0) |
| 689 | return -EINVAL; |
| 690 | |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 691 | mutex_lock(&player->ctrl_lock); |
| 692 | ret = uni_player_clk_set_rate(player, freq); |
Arnaud Pouliquen | ed6c75f | 2015-07-16 11:36:02 +0200 | [diff] [blame] | 693 | if (!ret) |
| 694 | player->mclk = freq; |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 695 | mutex_unlock(&player->ctrl_lock); |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 696 | |
Arnaud Pouliquen | ed6c75f | 2015-07-16 11:36:02 +0200 | [diff] [blame] | 697 | return ret; |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | static int uni_player_prepare(struct snd_pcm_substream *substream, |
| 701 | struct snd_soc_dai *dai) |
| 702 | { |
| 703 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 704 | struct uniperif *player = priv->dai_data.uni; |
| 705 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 706 | int transfer_size, trigger_limit; |
| 707 | int ret; |
| 708 | |
| 709 | /* The player should be stopped */ |
| 710 | if (player->state != UNIPERIF_STATE_STOPPED) { |
| 711 | dev_err(player->dev, "%s: invalid player state %d", __func__, |
| 712 | player->state); |
| 713 | return -EINVAL; |
| 714 | } |
| 715 | |
| 716 | /* Calculate transfer size (in fifo cells and bytes) for frame count */ |
| 717 | transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES; |
| 718 | |
| 719 | /* Calculate number of empty cells available before asserting DREQ */ |
| 720 | if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) { |
| 721 | trigger_limit = UNIPERIF_FIFO_SIZE - transfer_size; |
| 722 | } else { |
| 723 | /* |
| 724 | * Since SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0 |
| 725 | * FDMA_TRIGGER_LIMIT also controls when the state switches |
| 726 | * from OFF or STANDBY to AUDIO DATA. |
| 727 | */ |
| 728 | trigger_limit = transfer_size; |
| 729 | } |
| 730 | |
| 731 | /* Trigger limit must be an even number */ |
| 732 | if ((!trigger_limit % 2) || (trigger_limit != 1 && transfer_size % 2) || |
| 733 | (trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(player))) { |
| 734 | dev_err(player->dev, "invalid trigger limit %d", trigger_limit); |
| 735 | return -EINVAL; |
| 736 | } |
| 737 | |
| 738 | SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(player, trigger_limit); |
| 739 | |
| 740 | /* Uniperipheral setup depends on player type */ |
| 741 | switch (player->info->player_type) { |
| 742 | case SND_ST_UNIPERIF_PLAYER_TYPE_HDMI: |
| 743 | ret = uni_player_prepare_iec958(player, runtime); |
| 744 | break; |
| 745 | case SND_ST_UNIPERIF_PLAYER_TYPE_PCM: |
| 746 | ret = uni_player_prepare_pcm(player, runtime); |
| 747 | break; |
| 748 | case SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF: |
| 749 | ret = uni_player_prepare_iec958(player, runtime); |
| 750 | break; |
| 751 | default: |
| 752 | dev_err(player->dev, "invalid player type"); |
| 753 | return -EINVAL; |
| 754 | } |
| 755 | |
| 756 | if (ret) |
| 757 | return ret; |
| 758 | |
| 759 | switch (player->daifmt & SND_SOC_DAIFMT_INV_MASK) { |
| 760 | case SND_SOC_DAIFMT_NB_NF: |
| 761 | SET_UNIPERIF_I2S_FMT_LR_POL_LOW(player); |
| 762 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(player); |
| 763 | break; |
| 764 | case SND_SOC_DAIFMT_NB_IF: |
| 765 | SET_UNIPERIF_I2S_FMT_LR_POL_HIG(player); |
| 766 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(player); |
| 767 | break; |
| 768 | case SND_SOC_DAIFMT_IB_NF: |
| 769 | SET_UNIPERIF_I2S_FMT_LR_POL_LOW(player); |
| 770 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player); |
| 771 | break; |
| 772 | case SND_SOC_DAIFMT_IB_IF: |
| 773 | SET_UNIPERIF_I2S_FMT_LR_POL_HIG(player); |
| 774 | SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player); |
Arnaud Pouliquen | ed6c75f | 2015-07-16 11:36:02 +0200 | [diff] [blame] | 775 | break; |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | switch (player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 779 | case SND_SOC_DAIFMT_I2S: |
| 780 | SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player); |
| 781 | SET_UNIPERIF_I2S_FMT_PADDING_I2S_MODE(player); |
| 782 | break; |
| 783 | case SND_SOC_DAIFMT_LEFT_J: |
| 784 | SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player); |
| 785 | SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player); |
| 786 | break; |
| 787 | case SND_SOC_DAIFMT_RIGHT_J: |
| 788 | SET_UNIPERIF_I2S_FMT_ALIGN_RIGHT(player); |
| 789 | SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player); |
| 790 | break; |
| 791 | default: |
| 792 | dev_err(player->dev, "format not supported"); |
| 793 | return -EINVAL; |
| 794 | } |
| 795 | |
| 796 | SET_UNIPERIF_I2S_FMT_NO_OF_SAMPLES_TO_READ(player, 0); |
| 797 | |
| 798 | /* Reset uniperipheral player */ |
| 799 | SET_UNIPERIF_SOFT_RST_SOFT_RST(player); |
| 800 | |
| 801 | return reset_player(player); |
| 802 | } |
| 803 | |
| 804 | static int uni_player_start(struct uniperif *player) |
| 805 | { |
| 806 | int ret; |
| 807 | |
| 808 | /* The player should be stopped */ |
| 809 | if (player->state != UNIPERIF_STATE_STOPPED) { |
| 810 | dev_err(player->dev, "%s: invalid player state", __func__); |
| 811 | return -EINVAL; |
| 812 | } |
| 813 | |
| 814 | ret = clk_prepare_enable(player->clk); |
| 815 | if (ret) { |
| 816 | dev_err(player->dev, "%s: Failed to enable clock", __func__); |
| 817 | return ret; |
| 818 | } |
| 819 | |
| 820 | /* Clear any pending interrupts */ |
| 821 | SET_UNIPERIF_ITS_BCLR(player, GET_UNIPERIF_ITS(player)); |
| 822 | |
| 823 | /* Set the interrupt mask */ |
| 824 | SET_UNIPERIF_ITM_BSET_DMA_ERROR(player); |
| 825 | SET_UNIPERIF_ITM_BSET_FIFO_ERROR(player); |
| 826 | |
| 827 | /* Enable underflow recovery interrupts */ |
| 828 | if (player->info->underflow_enabled) { |
| 829 | SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(player); |
| 830 | SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(player); |
| 831 | } |
| 832 | |
| 833 | /* Reset uniperipheral player */ |
| 834 | SET_UNIPERIF_SOFT_RST_SOFT_RST(player); |
| 835 | |
| 836 | ret = reset_player(player); |
| 837 | if (ret < 0) |
| 838 | return ret; |
| 839 | |
| 840 | /* |
| 841 | * Does not use IEC61937 features of the uniperipheral hardware. |
| 842 | * Instead it performs IEC61937 in software and inserts it directly |
| 843 | * into the audio data stream. As such, when encoded mode is selected, |
| 844 | * linear pcm mode is still used, but with the differences of the |
| 845 | * channel status bits set for encoded mode and the validity bits set. |
| 846 | */ |
| 847 | SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(player); |
| 848 | |
| 849 | /* |
| 850 | * If iec958 formatting is required for hdmi or spdif, then it must be |
| 851 | * enabled after the operation mode is set. If set prior to this, it |
| 852 | * will not take affect and hang the player. |
| 853 | */ |
| 854 | if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) |
| 855 | if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) |
| 856 | SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player); |
| 857 | |
| 858 | /* Force channel status update (no update if clk disable) */ |
| 859 | if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) |
| 860 | SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player); |
| 861 | else |
| 862 | SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player); |
| 863 | |
| 864 | /* Update state to started */ |
| 865 | player->state = UNIPERIF_STATE_STARTED; |
| 866 | |
| 867 | return 0; |
| 868 | } |
| 869 | |
| 870 | static int uni_player_stop(struct uniperif *player) |
| 871 | { |
| 872 | int ret; |
| 873 | |
| 874 | /* The player should not be in stopped state */ |
| 875 | if (player->state == UNIPERIF_STATE_STOPPED) { |
| 876 | dev_err(player->dev, "%s: invalid player state", __func__); |
| 877 | return -EINVAL; |
| 878 | } |
| 879 | |
| 880 | /* Turn the player off */ |
| 881 | SET_UNIPERIF_CTRL_OPERATION_OFF(player); |
| 882 | |
| 883 | /* Soft reset the player */ |
| 884 | SET_UNIPERIF_SOFT_RST_SOFT_RST(player); |
| 885 | |
| 886 | ret = reset_player(player); |
| 887 | if (ret < 0) |
| 888 | return ret; |
| 889 | |
| 890 | /* Disable interrupts */ |
| 891 | SET_UNIPERIF_ITM_BCLR(player, GET_UNIPERIF_ITM(player)); |
| 892 | |
| 893 | /* Disable clock */ |
| 894 | clk_disable_unprepare(player->clk); |
| 895 | |
| 896 | /* Update state to stopped and return */ |
| 897 | player->state = UNIPERIF_STATE_STOPPED; |
| 898 | |
| 899 | return 0; |
| 900 | } |
| 901 | |
| 902 | int uni_player_resume(struct uniperif *player) |
| 903 | { |
| 904 | int ret; |
| 905 | |
| 906 | /* Select the frequency synthesizer clock */ |
| 907 | if (player->clk_sel) { |
| 908 | ret = regmap_field_write(player->clk_sel, 1); |
| 909 | if (ret) { |
| 910 | dev_err(player->dev, |
| 911 | "%s: Failed to select freq synth clock", |
| 912 | __func__); |
| 913 | return ret; |
| 914 | } |
| 915 | } |
| 916 | |
| 917 | SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player); |
| 918 | SET_UNIPERIF_CTRL_ROUNDING_OFF(player); |
| 919 | SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player); |
| 920 | SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player); |
| 921 | |
| 922 | return 0; |
| 923 | } |
| 924 | EXPORT_SYMBOL_GPL(uni_player_resume); |
| 925 | |
| 926 | static int uni_player_trigger(struct snd_pcm_substream *substream, |
| 927 | int cmd, struct snd_soc_dai *dai) |
| 928 | { |
| 929 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 930 | struct uniperif *player = priv->dai_data.uni; |
| 931 | |
| 932 | switch (cmd) { |
| 933 | case SNDRV_PCM_TRIGGER_START: |
| 934 | return uni_player_start(player); |
| 935 | case SNDRV_PCM_TRIGGER_STOP: |
| 936 | return uni_player_stop(player); |
| 937 | case SNDRV_PCM_TRIGGER_RESUME: |
| 938 | return uni_player_resume(player); |
| 939 | default: |
| 940 | return -EINVAL; |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | static void uni_player_shutdown(struct snd_pcm_substream *substream, |
| 945 | struct snd_soc_dai *dai) |
| 946 | { |
| 947 | struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai); |
| 948 | struct uniperif *player = priv->dai_data.uni; |
| 949 | |
| 950 | if (player->state != UNIPERIF_STATE_STOPPED) |
| 951 | /* Stop the player */ |
| 952 | uni_player_stop(player); |
| 953 | } |
| 954 | |
| 955 | static int uni_player_parse_dt_clk_glue(struct platform_device *pdev, |
| 956 | struct uniperif *player) |
| 957 | { |
| 958 | int bit_offset; |
| 959 | struct device_node *node = pdev->dev.of_node; |
| 960 | struct regmap *regmap; |
| 961 | |
| 962 | bit_offset = SYS_CFG_AUDI0_GLUE_PCM_CLKX + player->info->id; |
| 963 | |
| 964 | regmap = syscon_regmap_lookup_by_phandle(node, "st,syscfg"); |
| 965 | |
| 966 | if (regmap) { |
| 967 | struct reg_field regfield = |
| 968 | REG_FIELD(SYS_CFG_AUDIO_GLUE, bit_offset, bit_offset); |
| 969 | |
| 970 | player->clk_sel = regmap_field_alloc(regmap, regfield); |
| 971 | } else { |
| 972 | dev_err(&pdev->dev, "sti-audio-clk-glue syscf not found\n"); |
| 973 | return -EINVAL; |
| 974 | } |
| 975 | |
| 976 | return 0; |
| 977 | } |
| 978 | |
| 979 | static int uni_player_parse_dt(struct platform_device *pdev, |
| 980 | struct uniperif *player) |
| 981 | { |
| 982 | struct uniperif_info *info; |
| 983 | struct device *dev = &pdev->dev; |
| 984 | struct device_node *pnode = pdev->dev.of_node; |
| 985 | const char *mode; |
| 986 | |
| 987 | /* Allocate memory for the info structure */ |
| 988 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); |
| 989 | if (!info) |
| 990 | return -ENOMEM; |
| 991 | |
| 992 | of_property_read_u32(pnode, "version", &player->ver); |
| 993 | if (player->ver == SND_ST_UNIPERIF_VERSION_UNKNOWN) { |
| 994 | dev_err(dev, "Unknown uniperipheral version "); |
| 995 | return -EINVAL; |
| 996 | } |
| 997 | /* Underflow recovery is only supported on later ip revisions */ |
| 998 | if (player->ver >= SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) |
| 999 | info->underflow_enabled = 1; |
| 1000 | |
| 1001 | of_property_read_u32(pnode, "uniperiph-id", &info->id); |
| 1002 | |
| 1003 | /* Read the device mode property */ |
| 1004 | of_property_read_string(pnode, "mode", &mode); |
| 1005 | |
| 1006 | if (strcasecmp(mode, "hdmi") == 0) |
| 1007 | info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_HDMI; |
| 1008 | else if (strcasecmp(mode, "pcm") == 0) |
| 1009 | info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_PCM; |
| 1010 | else if (strcasecmp(mode, "spdif") == 0) |
| 1011 | info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF; |
| 1012 | else |
| 1013 | info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_NONE; |
| 1014 | |
| 1015 | /* Save the info structure */ |
| 1016 | player->info = info; |
| 1017 | |
| 1018 | /* Get the PCM_CLK_SEL bit from audio-glue-ctrl SoC register */ |
| 1019 | if (uni_player_parse_dt_clk_glue(pdev, player)) |
| 1020 | return -EINVAL; |
| 1021 | |
| 1022 | return 0; |
| 1023 | } |
| 1024 | |
Lars-Peter Clausen | 85cf604e | 2015-07-27 10:56:27 +0200 | [diff] [blame] | 1025 | static const struct snd_soc_dai_ops uni_player_dai_ops = { |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 1026 | .startup = uni_player_startup, |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 1027 | .shutdown = uni_player_shutdown, |
| 1028 | .prepare = uni_player_prepare, |
| 1029 | .trigger = uni_player_trigger, |
| 1030 | .hw_params = sti_uniperiph_dai_hw_params, |
| 1031 | .set_fmt = sti_uniperiph_dai_set_fmt, |
| 1032 | .set_sysclk = uni_player_set_sysclk |
| 1033 | }; |
| 1034 | |
| 1035 | int uni_player_init(struct platform_device *pdev, |
| 1036 | struct uniperif *player) |
| 1037 | { |
| 1038 | int ret = 0; |
| 1039 | |
| 1040 | player->dev = &pdev->dev; |
| 1041 | player->state = UNIPERIF_STATE_STOPPED; |
| 1042 | player->hw = &uni_player_pcm_hw; |
| 1043 | player->dai_ops = &uni_player_dai_ops; |
| 1044 | |
| 1045 | ret = uni_player_parse_dt(pdev, player); |
| 1046 | |
| 1047 | if (ret < 0) { |
| 1048 | dev_err(player->dev, "Failed to parse DeviceTree"); |
| 1049 | return ret; |
| 1050 | } |
| 1051 | |
| 1052 | /* Get uniperif resource */ |
| 1053 | player->clk = of_clk_get(pdev->dev.of_node, 0); |
| 1054 | if (IS_ERR(player->clk)) |
Arnaud Pouliquen | ed6c75f | 2015-07-16 11:36:02 +0200 | [diff] [blame] | 1055 | ret = PTR_ERR(player->clk); |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 1056 | |
| 1057 | /* Select the frequency synthesizer clock */ |
| 1058 | if (player->clk_sel) { |
| 1059 | ret = regmap_field_write(player->clk_sel, 1); |
| 1060 | if (ret) { |
| 1061 | dev_err(player->dev, |
| 1062 | "%s: Failed to select freq synth clock", |
| 1063 | __func__); |
| 1064 | return ret; |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | ret = devm_request_irq(&pdev->dev, player->irq, |
| 1069 | uni_player_irq_handler, IRQF_SHARED, |
| 1070 | dev_name(&pdev->dev), player); |
| 1071 | if (ret < 0) |
| 1072 | return ret; |
| 1073 | |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 1074 | mutex_init(&player->ctrl_lock); |
| 1075 | |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 1076 | /* Ensure that disabled by default */ |
| 1077 | SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player); |
| 1078 | SET_UNIPERIF_CTRL_ROUNDING_OFF(player); |
| 1079 | SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player); |
| 1080 | SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player); |
| 1081 | |
| 1082 | if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) { |
| 1083 | /* Set default iec958 status bits */ |
| 1084 | |
| 1085 | /* Consumer, PCM, copyright, 2ch, mode 0 */ |
| 1086 | player->stream_settings.iec958.status[0] = 0x00; |
| 1087 | /* Broadcast reception category */ |
| 1088 | player->stream_settings.iec958.status[1] = |
| 1089 | IEC958_AES1_CON_GENERAL; |
| 1090 | /* Do not take into account source or channel number */ |
| 1091 | player->stream_settings.iec958.status[2] = |
| 1092 | IEC958_AES2_CON_SOURCE_UNSPEC; |
| 1093 | /* Sampling frequency not indicated */ |
| 1094 | player->stream_settings.iec958.status[3] = |
| 1095 | IEC958_AES3_CON_FS_NOTID; |
| 1096 | /* Max sample word 24-bit, sample word length not indicated */ |
| 1097 | player->stream_settings.iec958.status[4] = |
| 1098 | IEC958_AES4_CON_MAX_WORDLEN_24 | |
| 1099 | IEC958_AES4_CON_WORDLEN_24_20; |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 1100 | |
Arnaud Pouliquen | 36cc093 | 2015-07-16 11:36:07 +0200 | [diff] [blame] | 1101 | player->num_ctrls = ARRAY_SIZE(snd_sti_iec_ctl); |
| 1102 | player->snd_ctrls = snd_sti_iec_ctl[0]; |
| 1103 | } else { |
| 1104 | player->num_ctrls = ARRAY_SIZE(snd_sti_pcm_ctl); |
| 1105 | player->snd_ctrls = snd_sti_pcm_ctl[0]; |
| 1106 | } |
Arnaud Pouliquen | fa05079 | 2015-07-16 11:36:06 +0200 | [diff] [blame] | 1107 | |
Arnaud Pouliquen | 76c2145 | 2015-06-22 16:31:07 +0200 | [diff] [blame] | 1108 | return 0; |
| 1109 | } |
| 1110 | EXPORT_SYMBOL_GPL(uni_player_init); |