| 1 | /* |
| 2 | * kirkwood-i2s.c |
| 3 | * |
| 4 | * (c) 2010 Arnaud Patard <apatard@mandriva.com> |
| 5 | * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License as published by the |
| 9 | * Free Software Foundation; either version 2 of the License, or (at your |
| 10 | * option) any later version. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/mbus.h> |
| 19 | #include <linux/delay.h> |
| 20 | #include <linux/clk.h> |
| 21 | #include <sound/pcm.h> |
| 22 | #include <sound/pcm_params.h> |
| 23 | #include <sound/soc.h> |
| 24 | #include <linux/platform_data/asoc-kirkwood.h> |
| 25 | #include <linux/of.h> |
| 26 | |
| 27 | #include "kirkwood.h" |
| 28 | |
| 29 | #define DRV_NAME "mvebu-audio" |
| 30 | |
| 31 | #define KIRKWOOD_I2S_FORMATS \ |
| 32 | (SNDRV_PCM_FMTBIT_S16_LE | \ |
| 33 | SNDRV_PCM_FMTBIT_S24_LE | \ |
| 34 | SNDRV_PCM_FMTBIT_S32_LE) |
| 35 | |
| 36 | #define KIRKWOOD_SPDIF_FORMATS \ |
| 37 | (SNDRV_PCM_FMTBIT_S16_LE | \ |
| 38 | SNDRV_PCM_FMTBIT_S24_LE) |
| 39 | |
| 40 | static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai, |
| 41 | unsigned int fmt) |
| 42 | { |
| 43 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai); |
| 44 | unsigned long mask; |
| 45 | unsigned long value; |
| 46 | |
| 47 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 48 | case SND_SOC_DAIFMT_RIGHT_J: |
| 49 | mask = KIRKWOOD_I2S_CTL_RJ; |
| 50 | break; |
| 51 | case SND_SOC_DAIFMT_LEFT_J: |
| 52 | mask = KIRKWOOD_I2S_CTL_LJ; |
| 53 | break; |
| 54 | case SND_SOC_DAIFMT_I2S: |
| 55 | mask = KIRKWOOD_I2S_CTL_I2S; |
| 56 | break; |
| 57 | default: |
| 58 | return -EINVAL; |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | * Set same format for playback and record |
| 63 | * This avoids some troubles. |
| 64 | */ |
| 65 | value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL); |
| 66 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; |
| 67 | value |= mask; |
| 68 | writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL); |
| 69 | |
| 70 | value = readl(priv->io+KIRKWOOD_I2S_RECCTL); |
| 71 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; |
| 72 | value |= mask; |
| 73 | writel(value, priv->io+KIRKWOOD_I2S_RECCTL); |
| 74 | |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate) |
| 79 | { |
| 80 | unsigned long value; |
| 81 | |
| 82 | value = KIRKWOOD_DCO_CTL_OFFSET_0; |
| 83 | switch (rate) { |
| 84 | default: |
| 85 | case 44100: |
| 86 | value |= KIRKWOOD_DCO_CTL_FREQ_11; |
| 87 | break; |
| 88 | case 48000: |
| 89 | value |= KIRKWOOD_DCO_CTL_FREQ_12; |
| 90 | break; |
| 91 | case 96000: |
| 92 | value |= KIRKWOOD_DCO_CTL_FREQ_24; |
| 93 | break; |
| 94 | } |
| 95 | writel(value, io + KIRKWOOD_DCO_CTL); |
| 96 | |
| 97 | /* wait for dco locked */ |
| 98 | do { |
| 99 | cpu_relax(); |
| 100 | value = readl(io + KIRKWOOD_DCO_SPCR_STATUS); |
| 101 | value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK; |
| 102 | } while (value == 0); |
| 103 | } |
| 104 | |
| 105 | static void kirkwood_set_rate(struct snd_soc_dai *dai, |
| 106 | struct kirkwood_dma_data *priv, unsigned long rate) |
| 107 | { |
| 108 | uint32_t clks_ctrl; |
| 109 | |
| 110 | if (IS_ERR(priv->extclk)) { |
| 111 | /* use internal dco for the supported rates |
| 112 | * defined in kirkwood_i2s_dai */ |
| 113 | dev_dbg(dai->dev, "%s: dco set rate = %lu\n", |
| 114 | __func__, rate); |
| 115 | kirkwood_set_dco(priv->io, rate); |
| 116 | |
| 117 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO; |
| 118 | } else { |
| 119 | /* use the external clock for the other rates |
| 120 | * defined in kirkwood_i2s_dai_extclk */ |
| 121 | dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n", |
| 122 | __func__, rate, 256 * rate); |
| 123 | clk_set_rate(priv->extclk, 256 * rate); |
| 124 | |
| 125 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK; |
| 126 | } |
| 127 | writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL); |
| 128 | } |
| 129 | |
| 130 | static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, |
| 131 | struct snd_soc_dai *dai) |
| 132 | { |
| 133 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
| 134 | |
| 135 | snd_soc_dai_set_dma_data(dai, substream, priv); |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, |
| 140 | struct snd_pcm_hw_params *params, |
| 141 | struct snd_soc_dai *dai) |
| 142 | { |
| 143 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
| 144 | uint32_t ctl_play, ctl_rec; |
| 145 | unsigned int i2s_reg; |
| 146 | unsigned long i2s_value; |
| 147 | |
| 148 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 149 | i2s_reg = KIRKWOOD_I2S_PLAYCTL; |
| 150 | } else { |
| 151 | i2s_reg = KIRKWOOD_I2S_RECCTL; |
| 152 | } |
| 153 | |
| 154 | kirkwood_set_rate(dai, priv, params_rate(params)); |
| 155 | |
| 156 | i2s_value = readl(priv->io+i2s_reg); |
| 157 | i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; |
| 158 | |
| 159 | /* |
| 160 | * Size settings in play/rec i2s control regs and play/rec control |
| 161 | * regs must be the same. |
| 162 | */ |
| 163 | switch (params_format(params)) { |
| 164 | case SNDRV_PCM_FORMAT_S16_LE: |
| 165 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; |
| 166 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C | |
| 167 | KIRKWOOD_PLAYCTL_I2S_EN | |
| 168 | KIRKWOOD_PLAYCTL_SPDIF_EN; |
| 169 | ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C | |
| 170 | KIRKWOOD_RECCTL_I2S_EN | |
| 171 | KIRKWOOD_RECCTL_SPDIF_EN; |
| 172 | break; |
| 173 | /* |
| 174 | * doesn't work... S20_3LE != kirkwood 20bit format ? |
| 175 | * |
| 176 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 177 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; |
| 178 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 | |
| 179 | KIRKWOOD_PLAYCTL_I2S_EN; |
| 180 | ctl_rec = KIRKWOOD_RECCTL_SIZE_20 | |
| 181 | KIRKWOOD_RECCTL_I2S_EN; |
| 182 | break; |
| 183 | */ |
| 184 | case SNDRV_PCM_FORMAT_S24_LE: |
| 185 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; |
| 186 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 | |
| 187 | KIRKWOOD_PLAYCTL_I2S_EN | |
| 188 | KIRKWOOD_PLAYCTL_SPDIF_EN; |
| 189 | ctl_rec = KIRKWOOD_RECCTL_SIZE_24 | |
| 190 | KIRKWOOD_RECCTL_I2S_EN | |
| 191 | KIRKWOOD_RECCTL_SPDIF_EN; |
| 192 | break; |
| 193 | case SNDRV_PCM_FORMAT_S32_LE: |
| 194 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; |
| 195 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 | |
| 196 | KIRKWOOD_PLAYCTL_I2S_EN; |
| 197 | ctl_rec = KIRKWOOD_RECCTL_SIZE_32 | |
| 198 | KIRKWOOD_RECCTL_I2S_EN; |
| 199 | break; |
| 200 | default: |
| 201 | return -EINVAL; |
| 202 | } |
| 203 | |
| 204 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 205 | if (params_channels(params) == 1) |
| 206 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH; |
| 207 | else |
| 208 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF; |
| 209 | |
| 210 | priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK | |
| 211 | KIRKWOOD_PLAYCTL_ENABLE_MASK | |
| 212 | KIRKWOOD_PLAYCTL_SIZE_MASK); |
| 213 | priv->ctl_play |= ctl_play; |
| 214 | } else { |
| 215 | priv->ctl_rec &= ~(KIRKWOOD_RECCTL_ENABLE_MASK | |
| 216 | KIRKWOOD_RECCTL_SIZE_MASK); |
| 217 | priv->ctl_rec |= ctl_rec; |
| 218 | } |
| 219 | |
| 220 | writel(i2s_value, priv->io+i2s_reg); |
| 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | static unsigned kirkwood_i2s_play_mute(unsigned ctl) |
| 226 | { |
| 227 | if (!(ctl & KIRKWOOD_PLAYCTL_I2S_EN)) |
| 228 | ctl |= KIRKWOOD_PLAYCTL_I2S_MUTE; |
| 229 | if (!(ctl & KIRKWOOD_PLAYCTL_SPDIF_EN)) |
| 230 | ctl |= KIRKWOOD_PLAYCTL_SPDIF_MUTE; |
| 231 | return ctl; |
| 232 | } |
| 233 | |
| 234 | static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, |
| 235 | int cmd, struct snd_soc_dai *dai) |
| 236 | { |
| 237 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 238 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
| 239 | uint32_t ctl, value; |
| 240 | |
| 241 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); |
| 242 | if ((ctl & KIRKWOOD_PLAYCTL_ENABLE_MASK) == 0) { |
| 243 | unsigned timeout = 5000; |
| 244 | /* |
| 245 | * The Armada510 spec says that if we enter pause mode, the |
| 246 | * busy bit must be read back as clear _twice_. Make sure |
| 247 | * we respect that otherwise we get DMA underruns. |
| 248 | */ |
| 249 | do { |
| 250 | value = ctl; |
| 251 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); |
| 252 | if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)) |
| 253 | break; |
| 254 | udelay(1); |
| 255 | } while (timeout--); |
| 256 | |
| 257 | if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY) |
| 258 | dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n", |
| 259 | ctl); |
| 260 | } |
| 261 | |
| 262 | switch (cmd) { |
| 263 | case SNDRV_PCM_TRIGGER_START: |
| 264 | /* configure */ |
| 265 | ctl = priv->ctl_play; |
| 266 | if (dai->id == 0) |
| 267 | ctl &= ~KIRKWOOD_PLAYCTL_SPDIF_EN; /* i2s */ |
| 268 | else |
| 269 | ctl &= ~KIRKWOOD_PLAYCTL_I2S_EN; /* spdif */ |
| 270 | ctl = kirkwood_i2s_play_mute(ctl); |
| 271 | value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK; |
| 272 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
| 273 | |
| 274 | /* enable interrupts */ |
| 275 | if (!runtime->no_period_wakeup) { |
| 276 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
| 277 | value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; |
| 278 | writel(value, priv->io + KIRKWOOD_INT_MASK); |
| 279 | } |
| 280 | |
| 281 | /* enable playback */ |
| 282 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
| 283 | break; |
| 284 | |
| 285 | case SNDRV_PCM_TRIGGER_STOP: |
| 286 | /* stop audio, disable interrupts */ |
| 287 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE | |
| 288 | KIRKWOOD_PLAYCTL_SPDIF_MUTE; |
| 289 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
| 290 | |
| 291 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
| 292 | value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; |
| 293 | writel(value, priv->io + KIRKWOOD_INT_MASK); |
| 294 | |
| 295 | /* disable all playbacks */ |
| 296 | ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK; |
| 297 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
| 298 | break; |
| 299 | |
| 300 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 301 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 302 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE | |
| 303 | KIRKWOOD_PLAYCTL_SPDIF_MUTE; |
| 304 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
| 305 | break; |
| 306 | |
| 307 | case SNDRV_PCM_TRIGGER_RESUME: |
| 308 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 309 | ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE | |
| 310 | KIRKWOOD_PLAYCTL_SPDIF_MUTE); |
| 311 | ctl = kirkwood_i2s_play_mute(ctl); |
| 312 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
| 313 | break; |
| 314 | |
| 315 | default: |
| 316 | return -EINVAL; |
| 317 | } |
| 318 | |
| 319 | return 0; |
| 320 | } |
| 321 | |
| 322 | static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, |
| 323 | int cmd, struct snd_soc_dai *dai) |
| 324 | { |
| 325 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
| 326 | uint32_t ctl, value; |
| 327 | |
| 328 | value = readl(priv->io + KIRKWOOD_RECCTL); |
| 329 | |
| 330 | switch (cmd) { |
| 331 | case SNDRV_PCM_TRIGGER_START: |
| 332 | /* configure */ |
| 333 | ctl = priv->ctl_rec; |
| 334 | if (dai->id == 0) |
| 335 | ctl &= ~KIRKWOOD_RECCTL_SPDIF_EN; /* i2s */ |
| 336 | else |
| 337 | ctl &= ~KIRKWOOD_RECCTL_I2S_EN; /* spdif */ |
| 338 | |
| 339 | value = ctl & ~KIRKWOOD_RECCTL_ENABLE_MASK; |
| 340 | writel(value, priv->io + KIRKWOOD_RECCTL); |
| 341 | |
| 342 | /* enable interrupts */ |
| 343 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
| 344 | value |= KIRKWOOD_INT_CAUSE_REC_BYTES; |
| 345 | writel(value, priv->io + KIRKWOOD_INT_MASK); |
| 346 | |
| 347 | /* enable record */ |
| 348 | writel(ctl, priv->io + KIRKWOOD_RECCTL); |
| 349 | break; |
| 350 | |
| 351 | case SNDRV_PCM_TRIGGER_STOP: |
| 352 | /* stop audio, disable interrupts */ |
| 353 | value = readl(priv->io + KIRKWOOD_RECCTL); |
| 354 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
| 355 | writel(value, priv->io + KIRKWOOD_RECCTL); |
| 356 | |
| 357 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
| 358 | value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; |
| 359 | writel(value, priv->io + KIRKWOOD_INT_MASK); |
| 360 | |
| 361 | /* disable all records */ |
| 362 | value = readl(priv->io + KIRKWOOD_RECCTL); |
| 363 | value &= ~KIRKWOOD_RECCTL_ENABLE_MASK; |
| 364 | writel(value, priv->io + KIRKWOOD_RECCTL); |
| 365 | break; |
| 366 | |
| 367 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 368 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 369 | value = readl(priv->io + KIRKWOOD_RECCTL); |
| 370 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
| 371 | writel(value, priv->io + KIRKWOOD_RECCTL); |
| 372 | break; |
| 373 | |
| 374 | case SNDRV_PCM_TRIGGER_RESUME: |
| 375 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 376 | value = readl(priv->io + KIRKWOOD_RECCTL); |
| 377 | value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); |
| 378 | writel(value, priv->io + KIRKWOOD_RECCTL); |
| 379 | break; |
| 380 | |
| 381 | default: |
| 382 | return -EINVAL; |
| 383 | } |
| 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, |
| 389 | struct snd_soc_dai *dai) |
| 390 | { |
| 391 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 392 | return kirkwood_i2s_play_trigger(substream, cmd, dai); |
| 393 | else |
| 394 | return kirkwood_i2s_rec_trigger(substream, cmd, dai); |
| 395 | |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | static int kirkwood_i2s_init(struct kirkwood_dma_data *priv) |
| 400 | { |
| 401 | unsigned long value; |
| 402 | unsigned int reg_data; |
| 403 | |
| 404 | /* put system in a "safe" state : */ |
| 405 | /* disable audio interrupts */ |
| 406 | writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); |
| 407 | writel(0, priv->io + KIRKWOOD_INT_MASK); |
| 408 | |
| 409 | reg_data = readl(priv->io + 0x1200); |
| 410 | reg_data &= (~(0x333FF8)); |
| 411 | reg_data |= 0x111D18; |
| 412 | writel(reg_data, priv->io + 0x1200); |
| 413 | |
| 414 | msleep(500); |
| 415 | |
| 416 | reg_data = readl(priv->io + 0x1200); |
| 417 | reg_data &= (~(0x333FF8)); |
| 418 | reg_data |= 0x111D18; |
| 419 | writel(reg_data, priv->io + 0x1200); |
| 420 | |
| 421 | /* disable playback/record */ |
| 422 | value = readl(priv->io + KIRKWOOD_PLAYCTL); |
| 423 | value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK; |
| 424 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
| 425 | |
| 426 | value = readl(priv->io + KIRKWOOD_RECCTL); |
| 427 | value &= ~KIRKWOOD_RECCTL_ENABLE_MASK; |
| 428 | writel(value, priv->io + KIRKWOOD_RECCTL); |
| 429 | |
| 430 | return 0; |
| 431 | |
| 432 | } |
| 433 | |
| 434 | static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { |
| 435 | .startup = kirkwood_i2s_startup, |
| 436 | .trigger = kirkwood_i2s_trigger, |
| 437 | .hw_params = kirkwood_i2s_hw_params, |
| 438 | .set_fmt = kirkwood_i2s_set_fmt, |
| 439 | }; |
| 440 | |
| 441 | static struct snd_soc_dai_driver kirkwood_i2s_dai[2] = { |
| 442 | { |
| 443 | .name = "i2s", |
| 444 | .id = 0, |
| 445 | .playback = { |
| 446 | .channels_min = 1, |
| 447 | .channels_max = 2, |
| 448 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
| 449 | SNDRV_PCM_RATE_96000, |
| 450 | .formats = KIRKWOOD_I2S_FORMATS, |
| 451 | }, |
| 452 | .capture = { |
| 453 | .channels_min = 1, |
| 454 | .channels_max = 2, |
| 455 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
| 456 | SNDRV_PCM_RATE_96000, |
| 457 | .formats = KIRKWOOD_I2S_FORMATS, |
| 458 | }, |
| 459 | .ops = &kirkwood_i2s_dai_ops, |
| 460 | }, |
| 461 | { |
| 462 | .name = "spdif", |
| 463 | .id = 1, |
| 464 | .playback = { |
| 465 | .channels_min = 1, |
| 466 | .channels_max = 2, |
| 467 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
| 468 | SNDRV_PCM_RATE_96000, |
| 469 | .formats = KIRKWOOD_SPDIF_FORMATS, |
| 470 | }, |
| 471 | .capture = { |
| 472 | .channels_min = 1, |
| 473 | .channels_max = 2, |
| 474 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
| 475 | SNDRV_PCM_RATE_96000, |
| 476 | .formats = KIRKWOOD_SPDIF_FORMATS, |
| 477 | }, |
| 478 | .ops = &kirkwood_i2s_dai_ops, |
| 479 | }, |
| 480 | }; |
| 481 | |
| 482 | static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk[2] = { |
| 483 | { |
| 484 | .name = "i2s", |
| 485 | .id = 0, |
| 486 | .playback = { |
| 487 | .channels_min = 1, |
| 488 | .channels_max = 2, |
| 489 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 490 | .rate_min = 5512, |
| 491 | .rate_max = 192000, |
| 492 | .formats = KIRKWOOD_I2S_FORMATS, |
| 493 | }, |
| 494 | .capture = { |
| 495 | .channels_min = 1, |
| 496 | .channels_max = 2, |
| 497 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 498 | .rate_min = 5512, |
| 499 | .rate_max = 192000, |
| 500 | .formats = KIRKWOOD_I2S_FORMATS, |
| 501 | }, |
| 502 | .ops = &kirkwood_i2s_dai_ops, |
| 503 | }, |
| 504 | { |
| 505 | .name = "spdif", |
| 506 | .id = 1, |
| 507 | .playback = { |
| 508 | .channels_min = 1, |
| 509 | .channels_max = 2, |
| 510 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 511 | .rate_min = 5512, |
| 512 | .rate_max = 192000, |
| 513 | .formats = KIRKWOOD_SPDIF_FORMATS, |
| 514 | }, |
| 515 | .capture = { |
| 516 | .channels_min = 1, |
| 517 | .channels_max = 2, |
| 518 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 519 | .rate_min = 5512, |
| 520 | .rate_max = 192000, |
| 521 | .formats = KIRKWOOD_SPDIF_FORMATS, |
| 522 | }, |
| 523 | .ops = &kirkwood_i2s_dai_ops, |
| 524 | }, |
| 525 | }; |
| 526 | |
| 527 | static const struct snd_soc_component_driver kirkwood_i2s_component = { |
| 528 | .name = DRV_NAME, |
| 529 | }; |
| 530 | |
| 531 | static int kirkwood_i2s_dev_probe(struct platform_device *pdev) |
| 532 | { |
| 533 | struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data; |
| 534 | struct snd_soc_dai_driver *soc_dai = kirkwood_i2s_dai; |
| 535 | struct kirkwood_dma_data *priv; |
| 536 | struct resource *mem; |
| 537 | struct device_node *np = pdev->dev.of_node; |
| 538 | int err; |
| 539 | |
| 540 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
| 541 | if (!priv) { |
| 542 | dev_err(&pdev->dev, "allocation failed\n"); |
| 543 | return -ENOMEM; |
| 544 | } |
| 545 | dev_set_drvdata(&pdev->dev, priv); |
| 546 | |
| 547 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 548 | priv->io = devm_ioremap_resource(&pdev->dev, mem); |
| 549 | if (IS_ERR(priv->io)) |
| 550 | return PTR_ERR(priv->io); |
| 551 | |
| 552 | priv->irq = platform_get_irq(pdev, 0); |
| 553 | if (priv->irq <= 0) { |
| 554 | dev_err(&pdev->dev, "platform_get_irq failed\n"); |
| 555 | return -ENXIO; |
| 556 | } |
| 557 | |
| 558 | if (np) { |
| 559 | priv->burst = 128; /* might be 32 or 128 */ |
| 560 | } else if (data) { |
| 561 | priv->burst = data->burst; |
| 562 | } else { |
| 563 | dev_err(&pdev->dev, "no DT nor platform data ?!\n"); |
| 564 | return -EINVAL; |
| 565 | } |
| 566 | |
| 567 | priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL); |
| 568 | if (IS_ERR(priv->clk)) { |
| 569 | dev_err(&pdev->dev, "no clock\n"); |
| 570 | return PTR_ERR(priv->clk); |
| 571 | } |
| 572 | |
| 573 | err = clk_prepare_enable(priv->clk); |
| 574 | if (err < 0) |
| 575 | return err; |
| 576 | |
| 577 | priv->extclk = devm_clk_get(&pdev->dev, "extclk"); |
| 578 | if (IS_ERR(priv->extclk)) { |
| 579 | if (PTR_ERR(priv->extclk) == -EPROBE_DEFER) |
| 580 | return -EPROBE_DEFER; |
| 581 | } else { |
| 582 | if (clk_is_match(priv->extclk, priv->clk)) { |
| 583 | devm_clk_put(&pdev->dev, priv->extclk); |
| 584 | priv->extclk = ERR_PTR(-EINVAL); |
| 585 | } else { |
| 586 | dev_info(&pdev->dev, "found external clock\n"); |
| 587 | clk_prepare_enable(priv->extclk); |
| 588 | soc_dai = kirkwood_i2s_dai_extclk; |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | /* Some sensible defaults - this reflects the powerup values */ |
| 593 | priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24; |
| 594 | priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24; |
| 595 | |
| 596 | /* Select the burst size */ |
| 597 | if (priv->burst == 32) { |
| 598 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32; |
| 599 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32; |
| 600 | } else { |
| 601 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128; |
| 602 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128; |
| 603 | } |
| 604 | |
| 605 | err = snd_soc_register_component(&pdev->dev, &kirkwood_i2s_component, |
| 606 | soc_dai, 2); |
| 607 | if (err) { |
| 608 | dev_err(&pdev->dev, "snd_soc_register_component failed\n"); |
| 609 | goto err_component; |
| 610 | } |
| 611 | |
| 612 | err = snd_soc_register_platform(&pdev->dev, &kirkwood_soc_platform); |
| 613 | if (err) { |
| 614 | dev_err(&pdev->dev, "snd_soc_register_platform failed\n"); |
| 615 | goto err_platform; |
| 616 | } |
| 617 | |
| 618 | kirkwood_i2s_init(priv); |
| 619 | |
| 620 | return 0; |
| 621 | err_platform: |
| 622 | snd_soc_unregister_component(&pdev->dev); |
| 623 | err_component: |
| 624 | if (!IS_ERR(priv->extclk)) |
| 625 | clk_disable_unprepare(priv->extclk); |
| 626 | clk_disable_unprepare(priv->clk); |
| 627 | |
| 628 | return err; |
| 629 | } |
| 630 | |
| 631 | static int kirkwood_i2s_dev_remove(struct platform_device *pdev) |
| 632 | { |
| 633 | struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); |
| 634 | |
| 635 | snd_soc_unregister_platform(&pdev->dev); |
| 636 | snd_soc_unregister_component(&pdev->dev); |
| 637 | |
| 638 | if (!IS_ERR(priv->extclk)) |
| 639 | clk_disable_unprepare(priv->extclk); |
| 640 | clk_disable_unprepare(priv->clk); |
| 641 | |
| 642 | return 0; |
| 643 | } |
| 644 | |
| 645 | #ifdef CONFIG_OF |
| 646 | static const struct of_device_id mvebu_audio_of_match[] = { |
| 647 | { .compatible = "marvell,kirkwood-audio" }, |
| 648 | { .compatible = "marvell,dove-audio" }, |
| 649 | { .compatible = "marvell,armada370-audio" }, |
| 650 | { } |
| 651 | }; |
| 652 | MODULE_DEVICE_TABLE(of, mvebu_audio_of_match); |
| 653 | #endif |
| 654 | |
| 655 | static struct platform_driver kirkwood_i2s_driver = { |
| 656 | .probe = kirkwood_i2s_dev_probe, |
| 657 | .remove = kirkwood_i2s_dev_remove, |
| 658 | .driver = { |
| 659 | .name = DRV_NAME, |
| 660 | .of_match_table = of_match_ptr(mvebu_audio_of_match), |
| 661 | }, |
| 662 | }; |
| 663 | |
| 664 | module_platform_driver(kirkwood_i2s_driver); |
| 665 | |
| 666 | /* Module information */ |
| 667 | MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); |
| 668 | MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); |
| 669 | MODULE_LICENSE("GPL"); |
| 670 | MODULE_ALIAS("platform:mvebu-audio"); |