Ola Lilja | 3592b7f | 2012-05-08 15:57:18 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) ST-Ericsson SA 2012 |
| 3 | * |
| 4 | * Author: Ola Lilja <ola.o.lilja@stericsson.com>, |
| 5 | * Roger Nilsson <roger.xr.nilsson@stericsson.com> |
| 6 | * for ST-Ericsson. |
| 7 | * |
| 8 | * License terms: |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as published |
| 12 | * by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/bitops.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/clk.h> |
| 20 | #include <linux/regulator/consumer.h> |
| 21 | #include <linux/mfd/dbx500-prcmu.h> |
| 22 | |
| 23 | #include <mach/hardware.h> |
| 24 | #include <mach/board-mop500-msp.h> |
| 25 | |
| 26 | #include <sound/soc.h> |
| 27 | #include <sound/soc-dai.h> |
| 28 | |
| 29 | #include "ux500_msp_i2s.h" |
| 30 | #include "ux500_msp_dai.h" |
| 31 | |
| 32 | static int setup_pcm_multichan(struct snd_soc_dai *dai, |
| 33 | struct ux500_msp_config *msp_config) |
| 34 | { |
| 35 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 36 | struct msp_multichannel_config *multi = |
| 37 | &msp_config->multichannel_config; |
| 38 | |
| 39 | if (drvdata->slots > 1) { |
| 40 | msp_config->multichannel_configured = 1; |
| 41 | |
| 42 | multi->tx_multichannel_enable = true; |
| 43 | multi->rx_multichannel_enable = true; |
| 44 | multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED; |
| 45 | |
| 46 | multi->tx_channel_0_enable = drvdata->tx_mask; |
| 47 | multi->tx_channel_1_enable = 0; |
| 48 | multi->tx_channel_2_enable = 0; |
| 49 | multi->tx_channel_3_enable = 0; |
| 50 | |
| 51 | multi->rx_channel_0_enable = drvdata->rx_mask; |
| 52 | multi->rx_channel_1_enable = 0; |
| 53 | multi->rx_channel_2_enable = 0; |
| 54 | multi->rx_channel_3_enable = 0; |
| 55 | |
| 56 | dev_dbg(dai->dev, |
| 57 | "%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n", |
| 58 | __func__, drvdata->slots, multi->tx_channel_0_enable, |
| 59 | multi->rx_channel_0_enable); |
| 60 | } |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate, |
| 66 | struct msp_protdesc *prot_desc) |
| 67 | { |
| 68 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 69 | |
| 70 | switch (drvdata->slots) { |
| 71 | case 1: |
| 72 | switch (rate) { |
| 73 | case 8000: |
| 74 | prot_desc->frame_period = |
| 75 | FRAME_PER_SINGLE_SLOT_8_KHZ; |
| 76 | break; |
| 77 | |
| 78 | case 16000: |
| 79 | prot_desc->frame_period = |
| 80 | FRAME_PER_SINGLE_SLOT_16_KHZ; |
| 81 | break; |
| 82 | |
| 83 | case 44100: |
| 84 | prot_desc->frame_period = |
| 85 | FRAME_PER_SINGLE_SLOT_44_1_KHZ; |
| 86 | break; |
| 87 | |
| 88 | case 48000: |
| 89 | prot_desc->frame_period = |
| 90 | FRAME_PER_SINGLE_SLOT_48_KHZ; |
| 91 | break; |
| 92 | |
| 93 | default: |
| 94 | dev_err(dai->dev, |
| 95 | "%s: Error: Unsupported sample-rate (freq = %d)!\n", |
| 96 | __func__, rate); |
| 97 | return -EINVAL; |
| 98 | } |
| 99 | break; |
| 100 | |
| 101 | case 2: |
| 102 | prot_desc->frame_period = FRAME_PER_2_SLOTS; |
| 103 | break; |
| 104 | |
| 105 | case 8: |
| 106 | prot_desc->frame_period = FRAME_PER_8_SLOTS; |
| 107 | break; |
| 108 | |
| 109 | case 16: |
| 110 | prot_desc->frame_period = FRAME_PER_16_SLOTS; |
| 111 | break; |
| 112 | default: |
| 113 | dev_err(dai->dev, |
| 114 | "%s: Error: Unsupported slot-count (slots = %d)!\n", |
| 115 | __func__, drvdata->slots); |
| 116 | return -EINVAL; |
| 117 | } |
| 118 | |
| 119 | prot_desc->clocks_per_frame = |
| 120 | prot_desc->frame_period+1; |
| 121 | |
| 122 | dev_dbg(dai->dev, "%s: Clocks per frame: %u\n", |
| 123 | __func__, |
| 124 | prot_desc->clocks_per_frame); |
| 125 | |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate, |
| 130 | struct msp_protdesc *prot_desc) |
| 131 | { |
| 132 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 133 | |
| 134 | u32 frame_length = MSP_FRAME_LEN_1; |
| 135 | prot_desc->frame_width = 0; |
| 136 | |
| 137 | switch (drvdata->slots) { |
| 138 | case 1: |
| 139 | frame_length = MSP_FRAME_LEN_1; |
| 140 | break; |
| 141 | |
| 142 | case 2: |
| 143 | frame_length = MSP_FRAME_LEN_2; |
| 144 | break; |
| 145 | |
| 146 | case 8: |
| 147 | frame_length = MSP_FRAME_LEN_8; |
| 148 | break; |
| 149 | |
| 150 | case 16: |
| 151 | frame_length = MSP_FRAME_LEN_16; |
| 152 | break; |
| 153 | default: |
| 154 | dev_err(dai->dev, |
| 155 | "%s: Error: Unsupported slot-count (slots = %d)!\n", |
| 156 | __func__, drvdata->slots); |
| 157 | return -EINVAL; |
| 158 | } |
| 159 | |
| 160 | prot_desc->tx_frame_len_1 = frame_length; |
| 161 | prot_desc->rx_frame_len_1 = frame_length; |
| 162 | prot_desc->tx_frame_len_2 = frame_length; |
| 163 | prot_desc->rx_frame_len_2 = frame_length; |
| 164 | |
| 165 | prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16; |
| 166 | prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16; |
| 167 | prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16; |
| 168 | prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16; |
| 169 | |
| 170 | return setup_frameper(dai, rate, prot_desc); |
| 171 | } |
| 172 | |
| 173 | static int setup_clocking(struct snd_soc_dai *dai, |
| 174 | unsigned int fmt, |
| 175 | struct ux500_msp_config *msp_config) |
| 176 | { |
| 177 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 178 | case SND_SOC_DAIFMT_NB_NF: |
| 179 | break; |
| 180 | |
| 181 | case SND_SOC_DAIFMT_NB_IF: |
| 182 | msp_config->tx_fsync_pol ^= 1 << TFSPOL_SHIFT; |
| 183 | msp_config->rx_fsync_pol ^= 1 << RFSPOL_SHIFT; |
| 184 | |
| 185 | break; |
| 186 | |
| 187 | default: |
| 188 | dev_err(dai->dev, |
| 189 | "%s: Error: Unsopported inversion (fmt = 0x%x)!\n", |
| 190 | __func__, fmt); |
| 191 | |
| 192 | return -EINVAL; |
| 193 | } |
| 194 | |
| 195 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 196 | case SND_SOC_DAIFMT_CBM_CFM: |
| 197 | dev_dbg(dai->dev, "%s: Codec is master.\n", __func__); |
| 198 | |
| 199 | msp_config->iodelay = 0x20; |
| 200 | msp_config->rx_fsync_sel = 0; |
| 201 | msp_config->tx_fsync_sel = 1 << TFSSEL_SHIFT; |
| 202 | msp_config->tx_clk_sel = 0; |
| 203 | msp_config->rx_clk_sel = 0; |
| 204 | msp_config->srg_clk_sel = 0x2 << SCKSEL_SHIFT; |
| 205 | |
| 206 | break; |
| 207 | |
| 208 | case SND_SOC_DAIFMT_CBS_CFS: |
| 209 | dev_dbg(dai->dev, "%s: Codec is slave.\n", __func__); |
| 210 | |
| 211 | msp_config->tx_clk_sel = TX_CLK_SEL_SRG; |
| 212 | msp_config->tx_fsync_sel = TX_SYNC_SRG_PROG; |
| 213 | msp_config->rx_clk_sel = RX_CLK_SEL_SRG; |
| 214 | msp_config->rx_fsync_sel = RX_SYNC_SRG; |
| 215 | msp_config->srg_clk_sel = 1 << SCKSEL_SHIFT; |
| 216 | |
| 217 | break; |
| 218 | |
| 219 | default: |
| 220 | dev_err(dai->dev, "%s: Error: Unsopported master (fmt = 0x%x)!\n", |
| 221 | __func__, fmt); |
| 222 | |
| 223 | return -EINVAL; |
| 224 | } |
| 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static int setup_pcm_protdesc(struct snd_soc_dai *dai, |
| 230 | unsigned int fmt, |
| 231 | struct msp_protdesc *prot_desc) |
| 232 | { |
| 233 | prot_desc->rx_phase_mode = MSP_SINGLE_PHASE; |
| 234 | prot_desc->tx_phase_mode = MSP_SINGLE_PHASE; |
| 235 | prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE; |
| 236 | prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE; |
| 237 | prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST; |
| 238 | prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST; |
| 239 | prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_HI); |
| 240 | prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_HI << RFSPOL_SHIFT; |
| 241 | |
| 242 | if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A) { |
| 243 | dev_dbg(dai->dev, "%s: DSP_A.\n", __func__); |
| 244 | prot_desc->rx_clk_pol = MSP_RISING_EDGE; |
| 245 | prot_desc->tx_clk_pol = MSP_FALLING_EDGE; |
| 246 | |
| 247 | prot_desc->rx_data_delay = MSP_DELAY_1; |
| 248 | prot_desc->tx_data_delay = MSP_DELAY_1; |
| 249 | } else { |
| 250 | dev_dbg(dai->dev, "%s: DSP_B.\n", __func__); |
| 251 | prot_desc->rx_clk_pol = MSP_FALLING_EDGE; |
| 252 | prot_desc->tx_clk_pol = MSP_RISING_EDGE; |
| 253 | |
| 254 | prot_desc->rx_data_delay = MSP_DELAY_0; |
| 255 | prot_desc->tx_data_delay = MSP_DELAY_0; |
| 256 | } |
| 257 | |
| 258 | prot_desc->rx_half_word_swap = MSP_SWAP_NONE; |
| 259 | prot_desc->tx_half_word_swap = MSP_SWAP_NONE; |
| 260 | prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR; |
| 261 | prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR; |
| 262 | prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE; |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | static int setup_i2s_protdesc(struct msp_protdesc *prot_desc) |
| 268 | { |
| 269 | prot_desc->rx_phase_mode = MSP_DUAL_PHASE; |
| 270 | prot_desc->tx_phase_mode = MSP_DUAL_PHASE; |
| 271 | prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC; |
| 272 | prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC; |
| 273 | prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST; |
| 274 | prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST; |
| 275 | prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_LO); |
| 276 | prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_LO << RFSPOL_SHIFT; |
| 277 | |
| 278 | prot_desc->rx_frame_len_1 = MSP_FRAME_LEN_1; |
| 279 | prot_desc->rx_frame_len_2 = MSP_FRAME_LEN_1; |
| 280 | prot_desc->tx_frame_len_1 = MSP_FRAME_LEN_1; |
| 281 | prot_desc->tx_frame_len_2 = MSP_FRAME_LEN_1; |
| 282 | prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16; |
| 283 | prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16; |
| 284 | prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16; |
| 285 | prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16; |
| 286 | |
| 287 | prot_desc->rx_clk_pol = MSP_RISING_EDGE; |
| 288 | prot_desc->tx_clk_pol = MSP_FALLING_EDGE; |
| 289 | |
| 290 | prot_desc->rx_data_delay = MSP_DELAY_0; |
| 291 | prot_desc->tx_data_delay = MSP_DELAY_0; |
| 292 | |
| 293 | prot_desc->tx_half_word_swap = MSP_SWAP_NONE; |
| 294 | prot_desc->rx_half_word_swap = MSP_SWAP_NONE; |
| 295 | prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR; |
| 296 | prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR; |
| 297 | prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE; |
| 298 | |
| 299 | return 0; |
| 300 | } |
| 301 | |
| 302 | static int setup_msp_config(struct snd_pcm_substream *substream, |
| 303 | struct snd_soc_dai *dai, |
| 304 | struct ux500_msp_config *msp_config) |
| 305 | { |
| 306 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 307 | struct msp_protdesc *prot_desc = &msp_config->protdesc; |
| 308 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 309 | unsigned int fmt = drvdata->fmt; |
| 310 | int ret; |
| 311 | |
| 312 | memset(msp_config, 0, sizeof(*msp_config)); |
| 313 | |
| 314 | msp_config->f_inputclk = drvdata->master_clk; |
| 315 | |
| 316 | msp_config->tx_fifo_config = TX_FIFO_ENABLE; |
| 317 | msp_config->rx_fifo_config = RX_FIFO_ENABLE; |
| 318 | msp_config->def_elem_len = 1; |
| 319 | msp_config->direction = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 320 | MSP_DIR_TX : MSP_DIR_RX; |
| 321 | msp_config->data_size = MSP_DATA_BITS_32; |
| 322 | msp_config->frame_freq = runtime->rate; |
| 323 | |
| 324 | dev_dbg(dai->dev, "%s: f_inputclk = %u, frame_freq = %u.\n", |
| 325 | __func__, msp_config->f_inputclk, msp_config->frame_freq); |
| 326 | /* To avoid division by zero */ |
| 327 | prot_desc->clocks_per_frame = 1; |
| 328 | |
| 329 | dev_dbg(dai->dev, "%s: rate: %u, channels: %d.\n", __func__, |
| 330 | runtime->rate, runtime->channels); |
| 331 | switch (fmt & |
| 332 | (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_MASTER_MASK)) { |
| 333 | case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS: |
| 334 | dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__); |
| 335 | |
| 336 | msp_config->default_protdesc = 1; |
| 337 | msp_config->protocol = MSP_I2S_PROTOCOL; |
| 338 | break; |
| 339 | |
| 340 | case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM: |
| 341 | dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__); |
| 342 | |
| 343 | msp_config->data_size = MSP_DATA_BITS_16; |
| 344 | msp_config->protocol = MSP_I2S_PROTOCOL; |
| 345 | |
| 346 | ret = setup_i2s_protdesc(prot_desc); |
| 347 | if (ret < 0) |
| 348 | return ret; |
| 349 | |
| 350 | break; |
| 351 | |
| 352 | case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS: |
| 353 | case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM: |
| 354 | case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS: |
| 355 | case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM: |
| 356 | dev_dbg(dai->dev, "%s: PCM format.\n", __func__); |
| 357 | |
| 358 | msp_config->data_size = MSP_DATA_BITS_16; |
| 359 | msp_config->protocol = MSP_PCM_PROTOCOL; |
| 360 | |
| 361 | ret = setup_pcm_protdesc(dai, fmt, prot_desc); |
| 362 | if (ret < 0) |
| 363 | return ret; |
| 364 | |
| 365 | ret = setup_pcm_multichan(dai, msp_config); |
| 366 | if (ret < 0) |
| 367 | return ret; |
| 368 | |
| 369 | ret = setup_pcm_framing(dai, runtime->rate, prot_desc); |
| 370 | if (ret < 0) |
| 371 | return ret; |
| 372 | |
| 373 | break; |
| 374 | |
| 375 | default: |
| 376 | dev_err(dai->dev, "%s: Error: Unsopported format (%d)!\n", |
| 377 | __func__, fmt); |
| 378 | return -EINVAL; |
| 379 | } |
| 380 | |
| 381 | return setup_clocking(dai, fmt, msp_config); |
| 382 | } |
| 383 | |
| 384 | static int ux500_msp_dai_startup(struct snd_pcm_substream *substream, |
| 385 | struct snd_soc_dai *dai) |
| 386 | { |
| 387 | int ret = 0; |
| 388 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 389 | |
| 390 | dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id, |
| 391 | snd_pcm_stream_str(substream)); |
| 392 | |
| 393 | /* Enable regulator */ |
| 394 | ret = regulator_enable(drvdata->reg_vape); |
| 395 | if (ret != 0) { |
| 396 | dev_err(drvdata->msp->dev, |
| 397 | "%s: Failed to enable regulator!\n", __func__); |
| 398 | return ret; |
| 399 | } |
| 400 | |
| 401 | /* Enable clock */ |
| 402 | dev_dbg(dai->dev, "%s: Enabling MSP-clock.\n", __func__); |
| 403 | clk_enable(drvdata->clk); |
| 404 | |
| 405 | return 0; |
| 406 | } |
| 407 | |
| 408 | static void ux500_msp_dai_shutdown(struct snd_pcm_substream *substream, |
| 409 | struct snd_soc_dai *dai) |
| 410 | { |
| 411 | int ret; |
| 412 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 413 | bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); |
| 414 | |
| 415 | dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id, |
| 416 | snd_pcm_stream_str(substream)); |
| 417 | |
| 418 | if (drvdata->vape_opp_constraint == 1) { |
| 419 | prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP, |
| 420 | "ux500_msp_i2s", 50); |
| 421 | drvdata->vape_opp_constraint = 0; |
| 422 | } |
| 423 | |
| 424 | if (ux500_msp_i2s_close(drvdata->msp, |
| 425 | is_playback ? MSP_DIR_TX : MSP_DIR_RX)) { |
| 426 | dev_err(dai->dev, |
| 427 | "%s: Error: MSP %d (%s): Unable to close i2s.\n", |
| 428 | __func__, dai->id, snd_pcm_stream_str(substream)); |
| 429 | } |
| 430 | |
| 431 | /* Disable clock */ |
| 432 | clk_disable(drvdata->clk); |
| 433 | |
| 434 | /* Disable regulator */ |
| 435 | ret = regulator_disable(drvdata->reg_vape); |
| 436 | if (ret < 0) |
| 437 | dev_err(dai->dev, |
| 438 | "%s: ERROR: Failed to disable regulator (%d)!\n", |
| 439 | __func__, ret); |
| 440 | } |
| 441 | |
| 442 | static int ux500_msp_dai_prepare(struct snd_pcm_substream *substream, |
| 443 | struct snd_soc_dai *dai) |
| 444 | { |
| 445 | int ret = 0; |
| 446 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 447 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 448 | struct ux500_msp_config msp_config; |
| 449 | |
| 450 | dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (rate = %d).\n", __func__, |
| 451 | dai->id, snd_pcm_stream_str(substream), runtime->rate); |
| 452 | |
| 453 | setup_msp_config(substream, dai, &msp_config); |
| 454 | |
| 455 | ret = ux500_msp_i2s_open(drvdata->msp, &msp_config); |
| 456 | if (ret < 0) { |
| 457 | dev_err(dai->dev, "%s: Error: msp_setup failed (ret = %d)!\n", |
| 458 | __func__, ret); |
| 459 | return ret; |
| 460 | } |
| 461 | |
| 462 | /* Set OPP-level */ |
| 463 | if ((drvdata->fmt & SND_SOC_DAIFMT_MASTER_MASK) && |
| 464 | (drvdata->msp->f_bitclk > 19200000)) { |
| 465 | /* If the bit-clock is higher than 19.2MHz, Vape should be |
| 466 | * run in 100% OPP. Only when bit-clock is used (MSP master) */ |
| 467 | prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP, |
| 468 | "ux500-msp-i2s", 100); |
| 469 | drvdata->vape_opp_constraint = 1; |
| 470 | } else { |
| 471 | prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP, |
| 472 | "ux500-msp-i2s", 50); |
| 473 | drvdata->vape_opp_constraint = 0; |
| 474 | } |
| 475 | |
| 476 | return ret; |
| 477 | } |
| 478 | |
| 479 | static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream, |
| 480 | struct snd_pcm_hw_params *params, |
| 481 | struct snd_soc_dai *dai) |
| 482 | { |
| 483 | unsigned int mask, slots_active; |
| 484 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 485 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 486 | |
| 487 | dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", |
| 488 | __func__, dai->id, snd_pcm_stream_str(substream)); |
| 489 | |
| 490 | switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 491 | case SND_SOC_DAIFMT_I2S: |
| 492 | snd_pcm_hw_constraint_minmax(runtime, |
| 493 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 494 | 1, 2); |
| 495 | break; |
| 496 | |
| 497 | case SND_SOC_DAIFMT_DSP_B: |
| 498 | case SND_SOC_DAIFMT_DSP_A: |
| 499 | mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 500 | drvdata->tx_mask : |
| 501 | drvdata->rx_mask; |
| 502 | |
| 503 | slots_active = hweight32(mask); |
| 504 | dev_dbg(dai->dev, "TDM-slots active: %d", slots_active); |
| 505 | |
| 506 | snd_pcm_hw_constraint_minmax(runtime, |
| 507 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 508 | slots_active, slots_active); |
| 509 | break; |
| 510 | |
| 511 | default: |
| 512 | dev_err(dai->dev, |
| 513 | "%s: Error: Unsupported protocol (fmt = 0x%x)!\n", |
| 514 | __func__, drvdata->fmt); |
| 515 | return -EINVAL; |
| 516 | } |
| 517 | |
| 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai, |
| 522 | unsigned int fmt) |
| 523 | { |
| 524 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 525 | |
| 526 | dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id); |
| 527 | |
| 528 | switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK | |
| 529 | SND_SOC_DAIFMT_MASTER_MASK)) { |
| 530 | case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS: |
| 531 | case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM: |
| 532 | case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS: |
| 533 | case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM: |
| 534 | case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS: |
| 535 | case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM: |
| 536 | break; |
| 537 | |
| 538 | default: |
| 539 | dev_err(dai->dev, |
| 540 | "%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n", |
| 541 | __func__, drvdata->fmt); |
| 542 | return -EINVAL; |
| 543 | } |
| 544 | |
| 545 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 546 | case SND_SOC_DAIFMT_NB_NF: |
| 547 | case SND_SOC_DAIFMT_NB_IF: |
| 548 | case SND_SOC_DAIFMT_IB_IF: |
| 549 | break; |
| 550 | |
| 551 | default: |
| 552 | dev_err(dai->dev, |
| 553 | "%s: Error: Unsupported inversion (fmt = 0x%x)!\n", |
| 554 | __func__, drvdata->fmt); |
| 555 | return -EINVAL; |
| 556 | } |
| 557 | |
| 558 | drvdata->fmt = fmt; |
| 559 | return 0; |
| 560 | } |
| 561 | |
| 562 | static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai, |
| 563 | unsigned int tx_mask, |
| 564 | unsigned int rx_mask, |
| 565 | int slots, int slot_width) |
| 566 | { |
| 567 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 568 | unsigned int cap; |
| 569 | |
| 570 | switch (slots) { |
| 571 | case 1: |
| 572 | cap = 0x01; |
| 573 | break; |
| 574 | case 2: |
| 575 | cap = 0x03; |
| 576 | break; |
| 577 | case 8: |
| 578 | cap = 0xFF; |
| 579 | break; |
| 580 | case 16: |
| 581 | cap = 0xFFFF; |
| 582 | break; |
| 583 | default: |
| 584 | dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n", |
| 585 | __func__, slots); |
| 586 | return -EINVAL; |
| 587 | } |
| 588 | drvdata->slots = slots; |
| 589 | |
| 590 | if (!(slot_width == 16)) { |
| 591 | dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n", |
| 592 | __func__, slot_width); |
| 593 | return -EINVAL; |
| 594 | } |
| 595 | drvdata->slot_width = slot_width; |
| 596 | |
| 597 | drvdata->tx_mask = tx_mask & cap; |
| 598 | drvdata->rx_mask = rx_mask & cap; |
| 599 | |
| 600 | return 0; |
| 601 | } |
| 602 | |
| 603 | static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai, |
| 604 | int clk_id, unsigned int freq, int dir) |
| 605 | { |
| 606 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 607 | |
| 608 | dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n", |
| 609 | __func__, dai->id, clk_id, freq); |
| 610 | |
| 611 | switch (clk_id) { |
| 612 | case UX500_MSP_MASTER_CLOCK: |
| 613 | drvdata->master_clk = freq; |
| 614 | break; |
| 615 | |
| 616 | default: |
| 617 | dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n", |
| 618 | __func__, dai->id, clk_id); |
| 619 | return -EINVAL; |
| 620 | } |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream, |
| 626 | int cmd, struct snd_soc_dai *dai) |
| 627 | { |
| 628 | int ret = 0; |
| 629 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 630 | |
| 631 | dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n", |
| 632 | __func__, dai->id, snd_pcm_stream_str(substream), |
| 633 | (int)drvdata->msp->id, cmd); |
| 634 | |
| 635 | ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream); |
| 636 | |
| 637 | return ret; |
| 638 | } |
| 639 | |
| 640 | static int ux500_msp_dai_probe(struct snd_soc_dai *dai) |
| 641 | { |
| 642 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev); |
| 643 | |
| 644 | drvdata->playback_dma_data.dma_cfg = drvdata->msp->dma_cfg_tx; |
| 645 | drvdata->capture_dma_data.dma_cfg = drvdata->msp->dma_cfg_rx; |
| 646 | |
| 647 | dai->playback_dma_data = &drvdata->playback_dma_data; |
| 648 | dai->capture_dma_data = &drvdata->capture_dma_data; |
| 649 | |
| 650 | drvdata->playback_dma_data.data_size = drvdata->slot_width; |
| 651 | drvdata->capture_dma_data.data_size = drvdata->slot_width; |
| 652 | |
| 653 | return 0; |
| 654 | } |
| 655 | |
| 656 | static struct snd_soc_dai_ops ux500_msp_dai_ops[] = { |
| 657 | { |
| 658 | .set_sysclk = ux500_msp_dai_set_dai_sysclk, |
| 659 | .set_fmt = ux500_msp_dai_set_dai_fmt, |
| 660 | .set_tdm_slot = ux500_msp_dai_set_tdm_slot, |
| 661 | .startup = ux500_msp_dai_startup, |
| 662 | .shutdown = ux500_msp_dai_shutdown, |
| 663 | .prepare = ux500_msp_dai_prepare, |
| 664 | .trigger = ux500_msp_dai_trigger, |
| 665 | .hw_params = ux500_msp_dai_hw_params, |
| 666 | } |
| 667 | }; |
| 668 | |
| 669 | static struct snd_soc_dai_driver ux500_msp_dai_drv[UX500_NBR_OF_DAI] = { |
| 670 | { |
| 671 | .name = "ux500-msp-i2s.0", |
| 672 | .probe = ux500_msp_dai_probe, |
| 673 | .id = 0, |
| 674 | .suspend = NULL, |
| 675 | .resume = NULL, |
| 676 | .playback = { |
| 677 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 678 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 679 | .rates = UX500_I2S_RATES, |
| 680 | .formats = UX500_I2S_FORMATS, |
| 681 | }, |
| 682 | .capture = { |
| 683 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 684 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 685 | .rates = UX500_I2S_RATES, |
| 686 | .formats = UX500_I2S_FORMATS, |
| 687 | }, |
| 688 | .ops = ux500_msp_dai_ops, |
| 689 | }, |
| 690 | { |
| 691 | .name = "ux500-msp-i2s.1", |
| 692 | .probe = ux500_msp_dai_probe, |
| 693 | .id = 1, |
| 694 | .suspend = NULL, |
| 695 | .resume = NULL, |
| 696 | .playback = { |
| 697 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 698 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 699 | .rates = UX500_I2S_RATES, |
| 700 | .formats = UX500_I2S_FORMATS, |
| 701 | }, |
| 702 | .capture = { |
| 703 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 704 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 705 | .rates = UX500_I2S_RATES, |
| 706 | .formats = UX500_I2S_FORMATS, |
| 707 | }, |
| 708 | .ops = ux500_msp_dai_ops, |
| 709 | }, |
| 710 | { |
| 711 | .name = "ux500-msp-i2s.2", |
| 712 | .id = 2, |
| 713 | .probe = ux500_msp_dai_probe, |
| 714 | .suspend = NULL, |
| 715 | .resume = NULL, |
| 716 | .playback = { |
| 717 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 718 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 719 | .rates = UX500_I2S_RATES, |
| 720 | .formats = UX500_I2S_FORMATS, |
| 721 | }, |
| 722 | .capture = { |
| 723 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 724 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 725 | .rates = UX500_I2S_RATES, |
| 726 | .formats = UX500_I2S_FORMATS, |
| 727 | }, |
| 728 | .ops = ux500_msp_dai_ops, |
| 729 | }, |
| 730 | { |
| 731 | .name = "ux500-msp-i2s.3", |
| 732 | .probe = ux500_msp_dai_probe, |
| 733 | .id = 3, |
| 734 | .suspend = NULL, |
| 735 | .resume = NULL, |
| 736 | .playback = { |
| 737 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 738 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 739 | .rates = UX500_I2S_RATES, |
| 740 | .formats = UX500_I2S_FORMATS, |
| 741 | }, |
| 742 | .capture = { |
| 743 | .channels_min = UX500_MSP_MIN_CHANNELS, |
| 744 | .channels_max = UX500_MSP_MAX_CHANNELS, |
| 745 | .rates = UX500_I2S_RATES, |
| 746 | .formats = UX500_I2S_FORMATS, |
| 747 | }, |
| 748 | .ops = ux500_msp_dai_ops, |
| 749 | }, |
| 750 | }; |
| 751 | |
| 752 | static int __devinit ux500_msp_drv_probe(struct platform_device *pdev) |
| 753 | { |
| 754 | struct ux500_msp_i2s_drvdata *drvdata; |
| 755 | int ret = 0; |
| 756 | |
| 757 | dev_dbg(&pdev->dev, "%s: Enter (pdev->name = %s).\n", __func__, |
| 758 | pdev->name); |
| 759 | |
| 760 | drvdata = devm_kzalloc(&pdev->dev, |
| 761 | sizeof(struct ux500_msp_i2s_drvdata), |
| 762 | GFP_KERNEL); |
| 763 | drvdata->fmt = 0; |
| 764 | drvdata->slots = 1; |
| 765 | drvdata->tx_mask = 0x01; |
| 766 | drvdata->rx_mask = 0x01; |
| 767 | drvdata->slot_width = 16; |
| 768 | drvdata->master_clk = MSP_INPUT_FREQ_APB; |
| 769 | |
| 770 | drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape"); |
| 771 | if (IS_ERR(drvdata->reg_vape)) { |
| 772 | ret = (int)PTR_ERR(drvdata->reg_vape); |
| 773 | dev_err(&pdev->dev, |
| 774 | "%s: ERROR: Failed to get Vape supply (%d)!\n", |
| 775 | __func__, ret); |
| 776 | return ret; |
| 777 | } |
| 778 | prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50); |
| 779 | |
| 780 | drvdata->clk = clk_get(&pdev->dev, NULL); |
| 781 | if (IS_ERR(drvdata->clk)) { |
| 782 | ret = (int)PTR_ERR(drvdata->clk); |
| 783 | dev_err(&pdev->dev, "%s: ERROR: clk_get failed (%d)!\n", |
| 784 | __func__, ret); |
| 785 | goto err_clk; |
| 786 | } |
| 787 | |
| 788 | ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp, |
| 789 | pdev->dev.platform_data); |
| 790 | if (!drvdata->msp) { |
| 791 | dev_err(&pdev->dev, |
| 792 | "%s: ERROR: Failed to init MSP-struct (%d)!", |
| 793 | __func__, ret); |
| 794 | goto err_init_msp; |
| 795 | } |
| 796 | dev_set_drvdata(&pdev->dev, drvdata); |
| 797 | |
| 798 | ret = snd_soc_register_dai(&pdev->dev, |
| 799 | &ux500_msp_dai_drv[drvdata->msp->id]); |
| 800 | if (ret < 0) { |
| 801 | dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n", |
| 802 | __func__, drvdata->msp->id); |
| 803 | goto err_init_msp; |
| 804 | } |
| 805 | |
| 806 | return 0; |
| 807 | |
| 808 | err_init_msp: |
| 809 | clk_put(drvdata->clk); |
| 810 | |
| 811 | err_clk: |
| 812 | devm_regulator_put(drvdata->reg_vape); |
| 813 | |
| 814 | return ret; |
| 815 | } |
| 816 | |
| 817 | static int __devexit ux500_msp_drv_remove(struct platform_device *pdev) |
| 818 | { |
| 819 | struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev); |
| 820 | |
| 821 | snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(ux500_msp_dai_drv)); |
| 822 | |
| 823 | devm_regulator_put(drvdata->reg_vape); |
| 824 | prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s"); |
| 825 | |
| 826 | clk_put(drvdata->clk); |
| 827 | |
| 828 | ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp); |
| 829 | |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | static struct platform_driver msp_i2s_driver = { |
| 834 | .driver = { |
| 835 | .name = "ux500-msp-i2s", |
| 836 | .owner = THIS_MODULE, |
| 837 | }, |
| 838 | .probe = ux500_msp_drv_probe, |
| 839 | .remove = ux500_msp_drv_remove, |
| 840 | }; |
| 841 | module_platform_driver(msp_i2s_driver); |
| 842 | |
Ola Lilja | 85f2439 | 2012-06-13 10:09:51 +0200 | [diff] [blame^] | 843 | MODULE_LICENSE("GPL v2"); |