sound/soc/codecs/wm_adsp.c

   1 /*
   2  * wm_adsp.c  --  Wolfson ADSP support
   3  *
   4  * Copyright 2012 Wolfson Microelectronics plc
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/init.h>
  16 #include <linux/delay.h>
  17 #include <linux/firmware.h>
  18 #include <linux/list.h>
  19 #include <linux/pm.h>
  20 #include <linux/pm_runtime.h>
  21 #include <linux/regmap.h>
  22 #include <linux/regulator/consumer.h>
  23 #include <linux/slab.h>
  24 #include <linux/vmalloc.h>
  25 #include <linux/workqueue.h>
  26 #include <linux/debugfs.h>
  27 #include <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/pcm_params.h>
  30 #include <sound/soc.h>
  31 #include <sound/jack.h>
  32 #include <sound/initval.h>
  33 #include <sound/tlv.h>
  34
  35 #include "wm_adsp.h"
  36
  37 #define adsp_crit(_dsp, fmt, ...) \
  38         dev_crit(_dsp->dev, "DSP%d: " fmt, _dsp->num, ##__VA_ARGS__)
  39 #define adsp_err(_dsp, fmt, ...) \
  40         dev_err(_dsp->dev, "DSP%d: " fmt, _dsp->num, ##__VA_ARGS__)
  41 #define adsp_warn(_dsp, fmt, ...) \
  42         dev_warn(_dsp->dev, "DSP%d: " fmt, _dsp->num, ##__VA_ARGS__)
  43 #define adsp_info(_dsp, fmt, ...) \
  44         dev_info(_dsp->dev, "DSP%d: " fmt, _dsp->num, ##__VA_ARGS__)
  45 #define adsp_dbg(_dsp, fmt, ...) \
  46         dev_dbg(_dsp->dev, "DSP%d: " fmt, _dsp->num, ##__VA_ARGS__)
  47
  48 #define ADSP1_CONTROL_1                   0x00
  49 #define ADSP1_CONTROL_2                   0x02
  50 #define ADSP1_CONTROL_3                   0x03
  51 #define ADSP1_CONTROL_4                   0x04
  52 #define ADSP1_CONTROL_5                   0x06
  53 #define ADSP1_CONTROL_6                   0x07
  54 #define ADSP1_CONTROL_7                   0x08
  55 #define ADSP1_CONTROL_8                   0x09
  56 #define ADSP1_CONTROL_9                   0x0A
  57 #define ADSP1_CONTROL_10                  0x0B
  58 #define ADSP1_CONTROL_11                  0x0C
  59 #define ADSP1_CONTROL_12                  0x0D
  60 #define ADSP1_CONTROL_13                  0x0F
  61 #define ADSP1_CONTROL_14                  0x10
  62 #define ADSP1_CONTROL_15                  0x11
  63 #define ADSP1_CONTROL_16                  0x12
  64 #define ADSP1_CONTROL_17                  0x13
  65 #define ADSP1_CONTROL_18                  0x14
  66 #define ADSP1_CONTROL_19                  0x16
  67 #define ADSP1_CONTROL_20                  0x17
  68 #define ADSP1_CONTROL_21                  0x18
  69 #define ADSP1_CONTROL_22                  0x1A
  70 #define ADSP1_CONTROL_23                  0x1B
  71 #define ADSP1_CONTROL_24                  0x1C
  72 #define ADSP1_CONTROL_25                  0x1E
  73 #define ADSP1_CONTROL_26                  0x20
  74 #define ADSP1_CONTROL_27                  0x21
  75 #define ADSP1_CONTROL_28                  0x22
  76 #define ADSP1_CONTROL_29                  0x23
  77 #define ADSP1_CONTROL_30                  0x24
  78 #define ADSP1_CONTROL_31                  0x26
  79
  80 /*
  81  * ADSP1 Control 19
  82  */
  83 #define ADSP1_WDMA_BUFFER_LENGTH_MASK     0x00FF  /* DSP1_WDMA_BUFFER_LENGTH - [7:0] */
  84 #define ADSP1_WDMA_BUFFER_LENGTH_SHIFT         0  /* DSP1_WDMA_BUFFER_LENGTH - [7:0] */
  85 #define ADSP1_WDMA_BUFFER_LENGTH_WIDTH         8  /* DSP1_WDMA_BUFFER_LENGTH - [7:0] */
  86
  87
  88 /*
  89  * ADSP1 Control 30
  90  */
  91 #define ADSP1_DBG_CLK_ENA                 0x0008  /* DSP1_DBG_CLK_ENA */
  92 #define ADSP1_DBG_CLK_ENA_MASK            0x0008  /* DSP1_DBG_CLK_ENA */
  93 #define ADSP1_DBG_CLK_ENA_SHIFT                3  /* DSP1_DBG_CLK_ENA */
  94 #define ADSP1_DBG_CLK_ENA_WIDTH                1  /* DSP1_DBG_CLK_ENA */
  95 #define ADSP1_SYS_ENA                     0x0004  /* DSP1_SYS_ENA */
  96 #define ADSP1_SYS_ENA_MASK                0x0004  /* DSP1_SYS_ENA */
  97 #define ADSP1_SYS_ENA_SHIFT                    2  /* DSP1_SYS_ENA */
  98 #define ADSP1_SYS_ENA_WIDTH                    1  /* DSP1_SYS_ENA */
  99 #define ADSP1_CORE_ENA                    0x0002  /* DSP1_CORE_ENA */
 100 #define ADSP1_CORE_ENA_MASK               0x0002  /* DSP1_CORE_ENA */
 101 #define ADSP1_CORE_ENA_SHIFT                   1  /* DSP1_CORE_ENA */
 102 #define ADSP1_CORE_ENA_WIDTH                   1  /* DSP1_CORE_ENA */
 103 #define ADSP1_START                       0x0001  /* DSP1_START */
 104 #define ADSP1_START_MASK                  0x0001  /* DSP1_START */
 105 #define ADSP1_START_SHIFT                      0  /* DSP1_START */
 106 #define ADSP1_START_WIDTH                      1  /* DSP1_START */
 107
 108 /*
 109  * ADSP1 Control 31
 110  */
 111 #define ADSP1_CLK_SEL_MASK                0x0007  /* CLK_SEL_ENA */
 112 #define ADSP1_CLK_SEL_SHIFT                    0  /* CLK_SEL_ENA */
 113 #define ADSP1_CLK_SEL_WIDTH                    3  /* CLK_SEL_ENA */
 114
 115 #define ADSP2_CONTROL        0x0
 116 #define ADSP2_CLOCKING       0x1
 117 #define ADSP2_STATUS1        0x4
 118 #define ADSP2_WDMA_CONFIG_1 0x30
 119 #define ADSP2_WDMA_CONFIG_2 0x31
 120 #define ADSP2_RDMA_CONFIG_1 0x34
 121
 122 #define ADSP2_SCRATCH0        0x40
 123 #define ADSP2_SCRATCH1        0x41
 124 #define ADSP2_SCRATCH2        0x42
 125 #define ADSP2_SCRATCH3        0x43
 126
 127 /*
 128  * ADSP2 Control
 129  */
 130
 131 #define ADSP2_MEM_ENA                     0x0010  /* DSP1_MEM_ENA */
 132 #define ADSP2_MEM_ENA_MASK                0x0010  /* DSP1_MEM_ENA */
 133 #define ADSP2_MEM_ENA_SHIFT                    4  /* DSP1_MEM_ENA */
 134 #define ADSP2_MEM_ENA_WIDTH                    1  /* DSP1_MEM_ENA */
 135 #define ADSP2_SYS_ENA                     0x0004  /* DSP1_SYS_ENA */
 136 #define ADSP2_SYS_ENA_MASK                0x0004  /* DSP1_SYS_ENA */
 137 #define ADSP2_SYS_ENA_SHIFT                    2  /* DSP1_SYS_ENA */
 138 #define ADSP2_SYS_ENA_WIDTH                    1  /* DSP1_SYS_ENA */
 139 #define ADSP2_CORE_ENA                    0x0002  /* DSP1_CORE_ENA */
 140 #define ADSP2_CORE_ENA_MASK               0x0002  /* DSP1_CORE_ENA */
 141 #define ADSP2_CORE_ENA_SHIFT                   1  /* DSP1_CORE_ENA */
 142 #define ADSP2_CORE_ENA_WIDTH                   1  /* DSP1_CORE_ENA */
 143 #define ADSP2_START                       0x0001  /* DSP1_START */
 144 #define ADSP2_START_MASK                  0x0001  /* DSP1_START */
 145 #define ADSP2_START_SHIFT                      0  /* DSP1_START */
 146 #define ADSP2_START_WIDTH                      1  /* DSP1_START */
 147
 148 /*
 149  * ADSP2 clocking
 150  */
 151 #define ADSP2_CLK_SEL_MASK                0x0007  /* CLK_SEL_ENA */
 152 #define ADSP2_CLK_SEL_SHIFT                    0  /* CLK_SEL_ENA */
 153 #define ADSP2_CLK_SEL_WIDTH                    3  /* CLK_SEL_ENA */
 154
 155 /*
 156  * ADSP2 Status 1
 157  */
 158 #define ADSP2_RAM_RDY                     0x0001
 159 #define ADSP2_RAM_RDY_MASK                0x0001
 160 #define ADSP2_RAM_RDY_SHIFT                    0
 161 #define ADSP2_RAM_RDY_WIDTH                    1
 162
 163 struct wm_adsp_buf {
 164         struct list_head list;
 165         void *buf;
 166 };
 167
 168 static struct wm_adsp_buf *wm_adsp_buf_alloc(const void *src, size_t len,
 169                                              struct list_head *list)
 170 {
 171         struct wm_adsp_buf *buf = kzalloc(sizeof(*buf), GFP_KERNEL);
 172
 173         if (buf == NULL)
 174                 return NULL;
 175
 176         buf->buf = vmalloc(len);
 177         if (!buf->buf) {
 178                 vfree(buf);
 179                 return NULL;
 180         }
 181         memcpy(buf->buf, src, len);
 182
 183         if (list)
 184                 list_add_tail(&buf->list, list);
 185
 186         return buf;
 187 }
 188
 189 static void wm_adsp_buf_free(struct list_head *list)
 190 {
 191         while (!list_empty(list)) {
 192                 struct wm_adsp_buf *buf = list_first_entry(list,
 193                                                            struct wm_adsp_buf,
 194                                                            list);
 195                 list_del(&buf->list);
 196                 vfree(buf->buf);
 197                 kfree(buf);
 198         }
 199 }
 200
 201 #define WM_ADSP_FW_MBC_VSS  0
 202 #define WM_ADSP_FW_HIFI     1
 203 #define WM_ADSP_FW_TX       2
 204 #define WM_ADSP_FW_TX_SPK   3
 205 #define WM_ADSP_FW_RX       4
 206 #define WM_ADSP_FW_RX_ANC   5
 207 #define WM_ADSP_FW_CTRL     6
 208 #define WM_ADSP_FW_ASR      7
 209 #define WM_ADSP_FW_TRACE    8
 210 #define WM_ADSP_FW_SPK_PROT 9
 211 #define WM_ADSP_FW_MISC     10
 212
 213 #define WM_ADSP_NUM_FW      11
 214
 215 static const char *wm_adsp_fw_text[WM_ADSP_NUM_FW] = {
 216         [WM_ADSP_FW_MBC_VSS] =  "MBC/VSS",
 217         [WM_ADSP_FW_HIFI] =     "MasterHiFi",
 218         [WM_ADSP_FW_TX] =       "Tx",
 219         [WM_ADSP_FW_TX_SPK] =   "Tx Speaker",
 220         [WM_ADSP_FW_RX] =       "Rx",
 221         [WM_ADSP_FW_RX_ANC] =   "Rx ANC",
 222         [WM_ADSP_FW_CTRL] =     "Voice Ctrl",
 223         [WM_ADSP_FW_ASR] =      "ASR Assist",
 224         [WM_ADSP_FW_TRACE] =    "Dbg Trace",
 225         [WM_ADSP_FW_SPK_PROT] = "Protection",
 226         [WM_ADSP_FW_MISC] =     "Misc",
 227 };
 228
 229 struct wm_adsp_system_config_xm_hdr {
 230         __be32 sys_enable;
 231         __be32 fw_id;
 232         __be32 fw_rev;
 233         __be32 boot_status;
 234         __be32 watchdog;
 235         __be32 dma_buffer_size;
 236         __be32 rdma[6];
 237         __be32 wdma[8];
 238         __be32 build_job_name[3];
 239         __be32 build_job_number;
 240 };
 241
 242 struct wm_adsp_alg_xm_struct {
 243         __be32 magic;
 244         __be32 smoothing;
 245         __be32 threshold;
 246         __be32 host_buf_ptr;
 247         __be32 start_seq;
 248         __be32 high_water_mark;
 249         __be32 low_water_mark;
 250         __be64 smoothed_power;
 251 };
 252
 253 struct wm_adsp_buffer {
 254         __be32 X_buf_base;              /* XM base addr of first X area */
 255         __be32 X_buf_size;              /* Size of 1st X area in words */
 256         __be32 X_buf_base2;             /* XM base addr of 2nd X area */
 257         __be32 X_buf_brk;               /* Total X size in words */
 258         __be32 Y_buf_base;              /* YM base addr of Y area */
 259         __be32 wrap;                    /* Total size X and Y in words */
 260         __be32 high_water_mark;         /* Point at which IRQ is asserted */
 261         __be32 irq_count;               /* bits 1-31 count IRQ assertions */
 262         __be32 irq_ack;                 /* acked IRQ count, bit 0 enables IRQ */
 263         __be32 next_write_index;        /* word index of next write */
 264         __be32 next_read_index;         /* word index of next read */
 265         __be32 error;                   /* error if any */
 266         __be32 oldest_block_index;      /* word index of oldest surviving */
 267         __be32 requested_rewind;        /* how many blocks rewind was done */
 268         __be32 reserved_space;          /* internal */
 269         __be32 min_free;                /* min free space since stream start */
 270         __be32 blocks_written[2];       /* total blocks written (64 bit) */
 271         __be32 words_written[2];        /* total words written (64 bit) */
 272 };
 273
 274 struct wm_adsp_compr_buf {
 275         struct wm_adsp *dsp;
 276
 277         struct wm_adsp_buffer_region *regions;
 278         u32 host_buf_ptr;
 279
 280         u32 error;
 281         u32 irq_count;
 282         int read_index;
 283         int avail;
 284 };
 285
 286 struct wm_adsp_compr {
 287         struct wm_adsp *dsp;
 288         struct wm_adsp_compr_buf *buf;
 289
 290         struct snd_compr_stream *stream;
 291         struct snd_compressed_buffer size;
 292
 293         u32 *raw_buf;
 294         unsigned int copied_total;
 295
 296         unsigned int sample_rate;
 297 };
 298
 299 #define WM_ADSP_DATA_WORD_SIZE         3
 300
 301 #define WM_ADSP_MIN_FRAGMENTS          1
 302 #define WM_ADSP_MAX_FRAGMENTS          256
 303 #define WM_ADSP_MIN_FRAGMENT_SIZE      (64 * WM_ADSP_DATA_WORD_SIZE)
 304 #define WM_ADSP_MAX_FRAGMENT_SIZE      (4096 * WM_ADSP_DATA_WORD_SIZE)
 305
 306 #define WM_ADSP_ALG_XM_STRUCT_MAGIC    0x49aec7
 307
 308 #define HOST_BUFFER_FIELD(field) \
 309         (offsetof(struct wm_adsp_buffer, field) / sizeof(__be32))
 310
 311 #define ALG_XM_FIELD(field) \
 312         (offsetof(struct wm_adsp_alg_xm_struct, field) / sizeof(__be32))
 313
 314 static int wm_adsp_buffer_init(struct wm_adsp *dsp);
 315 static int wm_adsp_buffer_free(struct wm_adsp *dsp);
 316
 317 struct wm_adsp_buffer_region {
 318         unsigned int offset;
 319         unsigned int cumulative_size;
 320         unsigned int mem_type;
 321         unsigned int base_addr;
 322 };
 323
 324 struct wm_adsp_buffer_region_def {
 325         unsigned int mem_type;
 326         unsigned int base_offset;
 327         unsigned int size_offset;
 328 };
 329
 330 static const struct wm_adsp_buffer_region_def default_regions[] = {
 331         {
 332                 .mem_type = WMFW_ADSP2_XM,
 333                 .base_offset = HOST_BUFFER_FIELD(X_buf_base),
 334                 .size_offset = HOST_BUFFER_FIELD(X_buf_size),
 335         },
 336         {
 337                 .mem_type = WMFW_ADSP2_XM,
 338                 .base_offset = HOST_BUFFER_FIELD(X_buf_base2),
 339                 .size_offset = HOST_BUFFER_FIELD(X_buf_brk),
 340         },
 341         {
 342                 .mem_type = WMFW_ADSP2_YM,
 343                 .base_offset = HOST_BUFFER_FIELD(Y_buf_base),
 344                 .size_offset = HOST_BUFFER_FIELD(wrap),
 345         },
 346 };
 347
 348 struct wm_adsp_fw_caps {
 349         u32 id;
 350         struct snd_codec_desc desc;
 351         int num_regions;
 352         const struct wm_adsp_buffer_region_def *region_defs;
 353 };
 354
 355 static const struct wm_adsp_fw_caps ctrl_caps[] = {
 356         {
 357                 .id = SND_AUDIOCODEC_BESPOKE,
 358                 .desc = {
 359                         .max_ch = 1,
 360                         .sample_rates = { 16000 },
 361                         .num_sample_rates = 1,
 362                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 363                 },
 364                 .num_regions = ARRAY_SIZE(default_regions),
 365                 .region_defs = default_regions,
 366         },
 367 };
 368
 369 static const struct wm_adsp_fw_caps trace_caps[] = {
 370         {
 371                 .id = SND_AUDIOCODEC_BESPOKE,
 372                 .desc = {
 373                         .max_ch = 8,
 374                         .sample_rates = {
 375                                 4000, 8000, 11025, 12000, 16000, 22050,
 376                                 24000, 32000, 44100, 48000, 64000, 88200,
 377                                 96000, 176400, 192000
 378                         },
 379                         .num_sample_rates = 15,
 380                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 381                 },
 382                 .num_regions = ARRAY_SIZE(default_regions),
 383                 .region_defs = default_regions,
 384         },
 385 };
 386
 387 static const struct {
 388         const char *file;
 389         int compr_direction;
 390         int num_caps;
 391         const struct wm_adsp_fw_caps *caps;
 392 } wm_adsp_fw[WM_ADSP_NUM_FW] = {
 393         [WM_ADSP_FW_MBC_VSS] =  { .file = "mbc-vss" },
 394         [WM_ADSP_FW_HIFI] =     { .file = "hifi" },
 395         [WM_ADSP_FW_TX] =       { .file = "tx" },
 396         [WM_ADSP_FW_TX_SPK] =   { .file = "tx-spk" },
 397         [WM_ADSP_FW_RX] =       { .file = "rx" },
 398         [WM_ADSP_FW_RX_ANC] =   { .file = "rx-anc" },
 399         [WM_ADSP_FW_CTRL] =     {
 400                 .file = "ctrl",
 401                 .compr_direction = SND_COMPRESS_CAPTURE,
 402                 .num_caps = ARRAY_SIZE(ctrl_caps),
 403                 .caps = ctrl_caps,
 404         },
 405         [WM_ADSP_FW_ASR] =      { .file = "asr" },
 406         [WM_ADSP_FW_TRACE] =    {
 407                 .file = "trace",
 408                 .compr_direction = SND_COMPRESS_CAPTURE,
 409                 .num_caps = ARRAY_SIZE(trace_caps),
 410                 .caps = trace_caps,
 411         },
 412         [WM_ADSP_FW_SPK_PROT] = { .file = "spk-prot" },
 413         [WM_ADSP_FW_MISC] =     { .file = "misc" },
 414 };
 415
 416 struct wm_coeff_ctl_ops {
 417         int (*xget)(struct snd_kcontrol *kcontrol,
 418                     struct snd_ctl_elem_value *ucontrol);
 419         int (*xput)(struct snd_kcontrol *kcontrol,
 420                     struct snd_ctl_elem_value *ucontrol);
 421         int (*xinfo)(struct snd_kcontrol *kcontrol,
 422                      struct snd_ctl_elem_info *uinfo);
 423 };
 424
 425 struct wm_coeff_ctl {
 426         const char *name;
 427         const char *fw_name;
 428         struct wm_adsp_alg_region alg_region;
 429         struct wm_coeff_ctl_ops ops;
 430         struct wm_adsp *dsp;
 431         unsigned int enabled:1;
 432         struct list_head list;
 433         void *cache;
 434         unsigned int offset;
 435         size_t len;
 436         unsigned int set:1;
 437         struct snd_kcontrol *kcontrol;
 438         unsigned int flags;
 439 };
 440
 441 #ifdef CONFIG_DEBUG_FS
 442 static void wm_adsp_debugfs_save_wmfwname(struct wm_adsp *dsp, const char *s)
 443 {
 444         char *tmp = kasprintf(GFP_KERNEL, "%s\n", s);
 445
 446         kfree(dsp->wmfw_file_name);
 447         dsp->wmfw_file_name = tmp;
 448 }
 449
 450 static void wm_adsp_debugfs_save_binname(struct wm_adsp *dsp, const char *s)
 451 {
 452         char *tmp = kasprintf(GFP_KERNEL, "%s\n", s);
 453
 454         kfree(dsp->bin_file_name);
 455         dsp->bin_file_name = tmp;
 456 }
 457
 458 static void wm_adsp_debugfs_clear(struct wm_adsp *dsp)
 459 {
 460         kfree(dsp->wmfw_file_name);
 461         kfree(dsp->bin_file_name);
 462         dsp->wmfw_file_name = NULL;
 463         dsp->bin_file_name = NULL;
 464 }
 465
 466 static ssize_t wm_adsp_debugfs_wmfw_read(struct file *file,
 467                                          char __user *user_buf,
 468                                          size_t count, loff_t *ppos)
 469 {
 470         struct wm_adsp *dsp = file->private_data;
 471         ssize_t ret;
 472
 473         mutex_lock(&dsp->pwr_lock);
 474
 475         if (!dsp->wmfw_file_name || !dsp->running)
 476                 ret = 0;
 477         else
 478                 ret = simple_read_from_buffer(user_buf, count, ppos,
 479                                               dsp->wmfw_file_name,
 480                                               strlen(dsp->wmfw_file_name));
 481
 482         mutex_unlock(&dsp->pwr_lock);
 483         return ret;
 484 }
 485
 486 static ssize_t wm_adsp_debugfs_bin_read(struct file *file,
 487                                         char __user *user_buf,
 488                                         size_t count, loff_t *ppos)
 489 {
 490         struct wm_adsp *dsp = file->private_data;
 491         ssize_t ret;
 492
 493         mutex_lock(&dsp->pwr_lock);
 494
 495         if (!dsp->bin_file_name || !dsp->running)
 496                 ret = 0;
 497         else
 498                 ret = simple_read_from_buffer(user_buf, count, ppos,
 499                                               dsp->bin_file_name,
 500                                               strlen(dsp->bin_file_name));
 501
 502         mutex_unlock(&dsp->pwr_lock);
 503         return ret;
 504 }
 505
 506 static const struct {
 507         const char *name;
 508         const struct file_operations fops;
 509 } wm_adsp_debugfs_fops[] = {
 510         {
 511                 .name = "wmfw_file_name",
 512                 .fops = {
 513                         .open = simple_open,
 514                         .read = wm_adsp_debugfs_wmfw_read,
 515                 },
 516         },
 517         {
 518                 .name = "bin_file_name",
 519                 .fops = {
 520                         .open = simple_open,
 521                         .read = wm_adsp_debugfs_bin_read,
 522                 },
 523         },
 524 };
 525
 526 static void wm_adsp2_init_debugfs(struct wm_adsp *dsp,
 527                                   struct snd_soc_codec *codec)
 528 {
 529         struct dentry *root = NULL;
 530         char *root_name;
 531         int i;
 532
 533         if (!codec->component.debugfs_root) {
 534                 adsp_err(dsp, "No codec debugfs root\n");
 535                 goto err;
 536         }
 537
 538         root_name = kmalloc(PAGE_SIZE, GFP_KERNEL);
 539         if (!root_name)
 540                 goto err;
 541
 542         snprintf(root_name, PAGE_SIZE, "dsp%d", dsp->num);
 543         root = debugfs_create_dir(root_name, codec->component.debugfs_root);
 544         kfree(root_name);
 545
 546         if (!root)
 547                 goto err;
 548
 549         if (!debugfs_create_bool("running", S_IRUGO, root, &dsp->running))
 550                 goto err;
 551
 552         if (!debugfs_create_x32("fw_id", S_IRUGO, root, &dsp->fw_id))
 553                 goto err;
 554
 555         if (!debugfs_create_x32("fw_version", S_IRUGO, root,
 556                                 &dsp->fw_id_version))
 557                 goto err;
 558
 559         for (i = 0; i < ARRAY_SIZE(wm_adsp_debugfs_fops); ++i) {
 560                 if (!debugfs_create_file(wm_adsp_debugfs_fops[i].name,
 561                                          S_IRUGO, root, dsp,
 562                                          &wm_adsp_debugfs_fops[i].fops))
 563                         goto err;
 564         }
 565
 566         dsp->debugfs_root = root;
 567         return;
 568
 569 err:
 570         debugfs_remove_recursive(root);
 571         adsp_err(dsp, "Failed to create debugfs\n");
 572 }
 573
 574 static void wm_adsp2_cleanup_debugfs(struct wm_adsp *dsp)
 575 {
 576         wm_adsp_debugfs_clear(dsp);
 577         debugfs_remove_recursive(dsp->debugfs_root);
 578 }
 579 #else
 580 static inline void wm_adsp2_init_debugfs(struct wm_adsp *dsp,
 581                                          struct snd_soc_codec *codec)
 582 {
 583 }
 584
 585 static inline void wm_adsp2_cleanup_debugfs(struct wm_adsp *dsp)
 586 {
 587 }
 588
 589 static inline void wm_adsp_debugfs_save_wmfwname(struct wm_adsp *dsp,
 590                                                  const char *s)
 591 {
 592 }
 593
 594 static inline void wm_adsp_debugfs_save_binname(struct wm_adsp *dsp,
 595                                                 const char *s)
 596 {
 597 }
 598
 599 static inline void wm_adsp_debugfs_clear(struct wm_adsp *dsp)
 600 {
 601 }
 602 #endif
 603
 604 static int wm_adsp_fw_get(struct snd_kcontrol *kcontrol,
 605                           struct snd_ctl_elem_value *ucontrol)
 606 {
 607         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 608         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 609         struct wm_adsp *dsp = snd_soc_codec_get_drvdata(codec);
 610
 611         ucontrol->value.integer.value[0] = dsp[e->shift_l].fw;
 612
 613         return 0;
 614 }
 615
 616 static int wm_adsp_fw_put(struct snd_kcontrol *kcontrol,
 617                           struct snd_ctl_elem_value *ucontrol)
 618 {
 619         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 620         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 621         struct wm_adsp *dsp = snd_soc_codec_get_drvdata(codec);
 622         int ret = 0;
 623
 624         if (ucontrol->value.integer.value[0] == dsp[e->shift_l].fw)
 625                 return 0;
 626
 627         if (ucontrol->value.integer.value[0] >= WM_ADSP_NUM_FW)
 628                 return -EINVAL;
 629
 630         mutex_lock(&dsp[e->shift_l].pwr_lock);
 631
 632         if (dsp[e->shift_l].running || dsp[e->shift_l].compr)
 633                 ret = -EBUSY;
 634         else
 635                 dsp[e->shift_l].fw = ucontrol->value.integer.value[0];
 636
 637         mutex_unlock(&dsp[e->shift_l].pwr_lock);
 638
 639         return ret;
 640 }
 641
 642 static const struct soc_enum wm_adsp_fw_enum[] = {
 643         SOC_ENUM_SINGLE(0, 0, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 644         SOC_ENUM_SINGLE(0, 1, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 645         SOC_ENUM_SINGLE(0, 2, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 646         SOC_ENUM_SINGLE(0, 3, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 647 };
 648
 649 const struct snd_kcontrol_new wm_adsp_fw_controls[] = {
 650         SOC_ENUM_EXT("DSP1 Firmware", wm_adsp_fw_enum[0],
 651                      wm_adsp_fw_get, wm_adsp_fw_put),
 652         SOC_ENUM_EXT("DSP2 Firmware", wm_adsp_fw_enum[1],
 653                      wm_adsp_fw_get, wm_adsp_fw_put),
 654         SOC_ENUM_EXT("DSP3 Firmware", wm_adsp_fw_enum[2],
 655                      wm_adsp_fw_get, wm_adsp_fw_put),
 656         SOC_ENUM_EXT("DSP4 Firmware", wm_adsp_fw_enum[3],
 657                      wm_adsp_fw_get, wm_adsp_fw_put),
 658 };
 659 EXPORT_SYMBOL_GPL(wm_adsp_fw_controls);
 660
 661 static struct wm_adsp_region const *wm_adsp_find_region(struct wm_adsp *dsp,
 662                                                         int type)
 663 {
 664         int i;
 665
 666         for (i = 0; i < dsp->num_mems; i++)
 667                 if (dsp->mem[i].type == type)
 668                         return &dsp->mem[i];
 669
 670         return NULL;
 671 }
 672
 673 static unsigned int wm_adsp_region_to_reg(struct wm_adsp_region const *mem,
 674                                           unsigned int offset)
 675 {
 676         if (WARN_ON(!mem))
 677                 return offset;
 678         switch (mem->type) {
 679         case WMFW_ADSP1_PM:
 680                 return mem->base + (offset * 3);
 681         case WMFW_ADSP1_DM:
 682                 return mem->base + (offset * 2);
 683         case WMFW_ADSP2_XM:
 684                 return mem->base + (offset * 2);
 685         case WMFW_ADSP2_YM:
 686                 return mem->base + (offset * 2);
 687         case WMFW_ADSP1_ZM:
 688                 return mem->base + (offset * 2);
 689         default:
 690                 WARN(1, "Unknown memory region type");
 691                 return offset;
 692         }
 693 }
 694
 695 static void wm_adsp2_show_fw_status(struct wm_adsp *dsp)
 696 {
 697         u16 scratch[4];
 698         int ret;
 699
 700         ret = regmap_raw_read(dsp->regmap, dsp->base + ADSP2_SCRATCH0,
 701                                 scratch, sizeof(scratch));
 702         if (ret) {
 703                 adsp_err(dsp, "Failed to read SCRATCH regs: %d\n", ret);
 704                 return;
 705         }
 706
 707         adsp_dbg(dsp, "FW SCRATCH 0:0x%x 1:0x%x 2:0x%x 3:0x%x\n",
 708                  be16_to_cpu(scratch[0]),
 709                  be16_to_cpu(scratch[1]),
 710                  be16_to_cpu(scratch[2]),
 711                  be16_to_cpu(scratch[3]));
 712 }
 713
 714 static int wm_coeff_info(struct snd_kcontrol *kctl,
 715                          struct snd_ctl_elem_info *uinfo)
 716 {
 717         struct wm_coeff_ctl *ctl = (struct wm_coeff_ctl *)kctl->private_value;
 718
 719         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 720         uinfo->count = ctl->len;
 721         return 0;
 722 }
 723
 724 static int wm_coeff_write_control(struct wm_coeff_ctl *ctl,
 725                                   const void *buf, size_t len)
 726 {
 727         struct wm_adsp_alg_region *alg_region = &ctl->alg_region;
 728         const struct wm_adsp_region *mem;
 729         struct wm_adsp *dsp = ctl->dsp;
 730         void *scratch;
 731         int ret;
 732         unsigned int reg;
 733
 734         mem = wm_adsp_find_region(dsp, alg_region->type);
 735         if (!mem) {
 736                 adsp_err(dsp, "No base for region %x\n",
 737                          alg_region->type);
 738                 return -EINVAL;
 739         }
 740
 741         reg = ctl->alg_region.base + ctl->offset;
 742         reg = wm_adsp_region_to_reg(mem, reg);
 743
 744         scratch = kmemdup(buf, ctl->len, GFP_KERNEL | GFP_DMA);
 745         if (!scratch)
 746                 return -ENOMEM;
 747
 748         ret = regmap_raw_write(dsp->regmap, reg, scratch,
 749                                ctl->len);
 750         if (ret) {
 751                 adsp_err(dsp, "Failed to write %zu bytes to %x: %d\n",
 752                          ctl->len, reg, ret);
 753                 kfree(scratch);
 754                 return ret;
 755         }
 756         adsp_dbg(dsp, "Wrote %zu bytes to %x\n", ctl->len, reg);
 757
 758         kfree(scratch);
 759
 760         return 0;
 761 }
 762
 763 static int wm_coeff_put(struct snd_kcontrol *kctl,
 764                         struct snd_ctl_elem_value *ucontrol)
 765 {
 766         struct wm_coeff_ctl *ctl = (struct wm_coeff_ctl *)kctl->private_value;
 767         char *p = ucontrol->value.bytes.data;
 768         int ret = 0;
 769
 770         mutex_lock(&ctl->dsp->pwr_lock);
 771
 772         memcpy(ctl->cache, p, ctl->len);
 773
 774         ctl->set = 1;
 775         if (ctl->enabled)
 776                 ret = wm_coeff_write_control(ctl, p, ctl->len);
 777
 778         mutex_unlock(&ctl->dsp->pwr_lock);
 779
 780         return ret;
 781 }
 782
 783 static int wm_coeff_read_control(struct wm_coeff_ctl *ctl,
 784                                  void *buf, size_t len)
 785 {
 786         struct wm_adsp_alg_region *alg_region = &ctl->alg_region;
 787         const struct wm_adsp_region *mem;
 788         struct wm_adsp *dsp = ctl->dsp;
 789         void *scratch;
 790         int ret;
 791         unsigned int reg;
 792
 793         mem = wm_adsp_find_region(dsp, alg_region->type);
 794         if (!mem) {
 795                 adsp_err(dsp, "No base for region %x\n",
 796                          alg_region->type);
 797                 return -EINVAL;
 798         }
 799
 800         reg = ctl->alg_region.base + ctl->offset;
 801         reg = wm_adsp_region_to_reg(mem, reg);
 802
 803         scratch = kmalloc(ctl->len, GFP_KERNEL | GFP_DMA);
 804         if (!scratch)
 805                 return -ENOMEM;
 806
 807         ret = regmap_raw_read(dsp->regmap, reg, scratch, ctl->len);
 808         if (ret) {
 809                 adsp_err(dsp, "Failed to read %zu bytes from %x: %d\n",
 810                          ctl->len, reg, ret);
 811                 kfree(scratch);
 812                 return ret;
 813         }
 814         adsp_dbg(dsp, "Read %zu bytes from %x\n", ctl->len, reg);
 815
 816         memcpy(buf, scratch, ctl->len);
 817         kfree(scratch);
 818
 819         return 0;
 820 }
 821
 822 static int wm_coeff_get(struct snd_kcontrol *kctl,
 823                         struct snd_ctl_elem_value *ucontrol)
 824 {
 825         struct wm_coeff_ctl *ctl = (struct wm_coeff_ctl *)kctl->private_value;
 826         char *p = ucontrol->value.bytes.data;
 827         int ret = 0;
 828
 829         mutex_lock(&ctl->dsp->pwr_lock);
 830
 831         if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) {
 832                 if (ctl->enabled)
 833                         ret = wm_coeff_read_control(ctl, p, ctl->len);
 834                 else
 835                         ret = -EPERM;
 836         } else {
 837                 if (!ctl->flags && ctl->enabled)
 838                         ret = wm_coeff_read_control(ctl, ctl->cache, ctl->len);
 839
 840                 memcpy(p, ctl->cache, ctl->len);
 841         }
 842
 843         mutex_unlock(&ctl->dsp->pwr_lock);
 844
 845         return ret;
 846 }
 847
 848 struct wmfw_ctl_work {
 849         struct wm_adsp *dsp;
 850         struct wm_coeff_ctl *ctl;
 851         struct work_struct work;
 852 };
 853
 854 static int wmfw_add_ctl(struct wm_adsp *dsp, struct wm_coeff_ctl *ctl)
 855 {
 856         struct snd_kcontrol_new *kcontrol;
 857         int ret;
 858
 859         if (!ctl || !ctl->name)
 860                 return -EINVAL;
 861
 862         kcontrol = kzalloc(sizeof(*kcontrol), GFP_KERNEL);
 863         if (!kcontrol)
 864                 return -ENOMEM;
 865         kcontrol->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 866
 867         kcontrol->name = ctl->name;
 868         kcontrol->info = wm_coeff_info;
 869         kcontrol->get = wm_coeff_get;
 870         kcontrol->put = wm_coeff_put;
 871         kcontrol->private_value = (unsigned long)ctl;
 872
 873         if (ctl->flags) {
 874                 if (ctl->flags & WMFW_CTL_FLAG_WRITEABLE)
 875                         kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_WRITE;
 876                 if (ctl->flags & WMFW_CTL_FLAG_READABLE)
 877                         kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_READ;
 878                 if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
 879                         kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_VOLATILE;
 880         }
 881
 882         ret = snd_soc_add_card_controls(dsp->card,
 883                                         kcontrol, 1);
 884         if (ret < 0)
 885                 goto err_kcontrol;
 886
 887         kfree(kcontrol);
 888
 889         ctl->kcontrol = snd_soc_card_get_kcontrol(dsp->card,
 890                                                   ctl->name);
 891
 892         return 0;
 893
 894 err_kcontrol:
 895         kfree(kcontrol);
 896         return ret;
 897 }
 898
 899 static int wm_coeff_init_control_caches(struct wm_adsp *dsp)
 900 {
 901         struct wm_coeff_ctl *ctl;
 902         int ret;
 903
 904         list_for_each_entry(ctl, &dsp->ctl_list, list) {
 905                 if (!ctl->enabled || ctl->set)
 906                         continue;
 907                 if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
 908                         continue;
 909
 910                 ret = wm_coeff_read_control(ctl,
 911                                             ctl->cache,
 912                                             ctl->len);
 913                 if (ret < 0)
 914                         return ret;
 915         }
 916
 917         return 0;
 918 }
 919
 920 static int wm_coeff_sync_controls(struct wm_adsp *dsp)
 921 {
 922         struct wm_coeff_ctl *ctl;
 923         int ret;
 924
 925         list_for_each_entry(ctl, &dsp->ctl_list, list) {
 926                 if (!ctl->enabled)
 927                         continue;
 928                 if (ctl->set && !(ctl->flags & WMFW_CTL_FLAG_VOLATILE)) {
 929                         ret = wm_coeff_write_control(ctl,
 930                                                      ctl->cache,
 931                                                      ctl->len);
 932                         if (ret < 0)
 933                                 return ret;
 934                 }
 935         }
 936
 937         return 0;
 938 }
 939
 940 static void wm_adsp_ctl_work(struct work_struct *work)
 941 {
 942         struct wmfw_ctl_work *ctl_work = container_of(work,
 943                                                       struct wmfw_ctl_work,
 944                                                       work);
 945
 946         wmfw_add_ctl(ctl_work->dsp, ctl_work->ctl);
 947         kfree(ctl_work);
 948 }
 949
 950 static int wm_adsp_create_control(struct wm_adsp *dsp,
 951                                   const struct wm_adsp_alg_region *alg_region,
 952                                   unsigned int offset, unsigned int len,
 953                                   const char *subname, unsigned int subname_len,
 954                                   unsigned int flags)
 955 {
 956         struct wm_coeff_ctl *ctl;
 957         struct wmfw_ctl_work *ctl_work;
 958         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 959         char *region_name;
 960         int ret;
 961
 962         if (flags & WMFW_CTL_FLAG_SYS)
 963                 return 0;
 964
 965         switch (alg_region->type) {
 966         case WMFW_ADSP1_PM:
 967                 region_name = "PM";
 968                 break;
 969         case WMFW_ADSP1_DM:
 970                 region_name = "DM";
 971                 break;
 972         case WMFW_ADSP2_XM:
 973                 region_name = "XM";
 974                 break;
 975         case WMFW_ADSP2_YM:
 976                 region_name = "YM";
 977                 break;
 978         case WMFW_ADSP1_ZM:
 979                 region_name = "ZM";
 980                 break;
 981         default:
 982                 adsp_err(dsp, "Unknown region type: %d\n", alg_region->type);
 983                 return -EINVAL;
 984         }
 985
 986         switch (dsp->fw_ver) {
 987         case 0:
 988         case 1:
 989                 snprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "DSP%d %s %x",
 990                          dsp->num, region_name, alg_region->alg);
 991                 break;
 992         default:
 993                 ret = snprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN,
 994                                 "DSP%d%c %.12s %x", dsp->num, *region_name,
 995                                 wm_adsp_fw_text[dsp->fw], alg_region->alg);
 996
 997                 /* Truncate the subname from the start if it is too long */
 998                 if (subname) {
 999                         int avail = SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret - 2;
1000                         int skip = 0;
1001
1002                         if (subname_len > avail)
1003                                 skip = subname_len - avail;
1004
1005                         snprintf(name + ret,
1006                                  SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret, " %.*s",
1007                                  subname_len - skip, subname + skip);
1008                 }
1009                 break;
1010         }
1011
1012         list_for_each_entry(ctl, &dsp->ctl_list, list) {
1013                 if (!strcmp(ctl->name, name)) {
1014                         if (!ctl->enabled)
1015                                 ctl->enabled = 1;
1016                         return 0;
1017                 }
1018         }
1019
1020         ctl = kzalloc(sizeof(*ctl), GFP_KERNEL);
1021         if (!ctl)
1022                 return -ENOMEM;
1023         ctl->fw_name = wm_adsp_fw_text[dsp->fw];
1024         ctl->alg_region = *alg_region;
1025         ctl->name = kmemdup(name, strlen(name) + 1, GFP_KERNEL);
1026         if (!ctl->name) {
1027                 ret = -ENOMEM;
1028                 goto err_ctl;
1029         }
1030         ctl->enabled = 1;
1031         ctl->set = 0;
1032         ctl->ops.xget = wm_coeff_get;
1033         ctl->ops.xput = wm_coeff_put;
1034         ctl->dsp = dsp;
1035
1036         ctl->flags = flags;
1037         ctl->offset = offset;
1038         if (len > 512) {
1039                 adsp_warn(dsp, "Truncating control %s from %d\n",
1040                           ctl->name, len);
1041                 len = 512;
1042         }
1043         ctl->len = len;
1044         ctl->cache = kzalloc(ctl->len, GFP_KERNEL);
1045         if (!ctl->cache) {
1046                 ret = -ENOMEM;
1047                 goto err_ctl_name;
1048         }
1049
1050         list_add(&ctl->list, &dsp->ctl_list);
1051
1052         ctl_work = kzalloc(sizeof(*ctl_work), GFP_KERNEL);
1053         if (!ctl_work) {
1054                 ret = -ENOMEM;
1055                 goto err_ctl_cache;
1056         }
1057
1058         ctl_work->dsp = dsp;
1059         ctl_work->ctl = ctl;
1060         INIT_WORK(&ctl_work->work, wm_adsp_ctl_work);
1061         schedule_work(&ctl_work->work);
1062
1063         return 0;
1064
1065 err_ctl_cache:
1066         kfree(ctl->cache);
1067 err_ctl_name:
1068         kfree(ctl->name);
1069 err_ctl:
1070         kfree(ctl);
1071
1072         return ret;
1073 }
1074
1075 struct wm_coeff_parsed_alg {
1076         int id;
1077         const u8 *name;
1078         int name_len;
1079         int ncoeff;
1080 };
1081
1082 struct wm_coeff_parsed_coeff {
1083         int offset;
1084         int mem_type;
1085         const u8 *name;
1086         int name_len;
1087         int ctl_type;
1088         int flags;
1089         int len;
1090 };
1091
1092 static int wm_coeff_parse_string(int bytes, const u8 **pos, const u8 **str)
1093 {
1094         int length;
1095
1096         switch (bytes) {
1097         case 1:
1098                 length = **pos;
1099                 break;
1100         case 2:
1101                 length = le16_to_cpu(*((__le16 *)*pos));
1102                 break;
1103         default:
1104                 return 0;
1105         }
1106
1107         if (str)
1108                 *str = *pos + bytes;
1109
1110         *pos += ((length + bytes) + 3) & ~0x03;
1111
1112         return length;
1113 }
1114
1115 static int wm_coeff_parse_int(int bytes, const u8 **pos)
1116 {
1117         int val = 0;
1118
1119         switch (bytes) {
1120         case 2:
1121                 val = le16_to_cpu(*((__le16 *)*pos));
1122                 break;
1123         case 4:
1124                 val = le32_to_cpu(*((__le32 *)*pos));
1125                 break;
1126         default:
1127                 break;
1128         }
1129
1130         *pos += bytes;
1131
1132         return val;
1133 }
1134
1135 static inline void wm_coeff_parse_alg(struct wm_adsp *dsp, const u8 **data,
1136                                       struct wm_coeff_parsed_alg *blk)
1137 {
1138         const struct wmfw_adsp_alg_data *raw;
1139
1140         switch (dsp->fw_ver) {
1141         case 0:
1142         case 1:
1143                 raw = (const struct wmfw_adsp_alg_data *)*data;
1144                 *data = raw->data;
1145
1146                 blk->id = le32_to_cpu(raw->id);
1147                 blk->name = raw->name;
1148                 blk->name_len = strlen(raw->name);
1149                 blk->ncoeff = le32_to_cpu(raw->ncoeff);
1150                 break;
1151         default:
1152                 blk->id = wm_coeff_parse_int(sizeof(raw->id), data);
1153                 blk->name_len = wm_coeff_parse_string(sizeof(u8), data,
1154                                                       &blk->name);
1155                 wm_coeff_parse_string(sizeof(u16), data, NULL);
1156                 blk->ncoeff = wm_coeff_parse_int(sizeof(raw->ncoeff), data);
1157                 break;
1158         }
1159
1160         adsp_dbg(dsp, "Algorithm ID: %#x\n", blk->id);
1161         adsp_dbg(dsp, "Algorithm name: %.*s\n", blk->name_len, blk->name);
1162         adsp_dbg(dsp, "# of coefficient descriptors: %#x\n", blk->ncoeff);
1163 }
1164
1165 static inline void wm_coeff_parse_coeff(struct wm_adsp *dsp, const u8 **data,
1166                                         struct wm_coeff_parsed_coeff *blk)
1167 {
1168         const struct wmfw_adsp_coeff_data *raw;
1169         const u8 *tmp;
1170         int length;
1171
1172         switch (dsp->fw_ver) {
1173         case 0:
1174         case 1:
1175                 raw = (const struct wmfw_adsp_coeff_data *)*data;
1176                 *data = *data + sizeof(raw->hdr) + le32_to_cpu(raw->hdr.size);
1177
1178                 blk->offset = le16_to_cpu(raw->hdr.offset);
1179                 blk->mem_type = le16_to_cpu(raw->hdr.type);
1180                 blk->name = raw->name;
1181                 blk->name_len = strlen(raw->name);
1182                 blk->ctl_type = le16_to_cpu(raw->ctl_type);
1183                 blk->flags = le16_to_cpu(raw->flags);
1184                 blk->len = le32_to_cpu(raw->len);
1185                 break;
1186         default:
1187                 tmp = *data;
1188                 blk->offset = wm_coeff_parse_int(sizeof(raw->hdr.offset), &tmp);
1189                 blk->mem_type = wm_coeff_parse_int(sizeof(raw->hdr.type), &tmp);
1190                 length = wm_coeff_parse_int(sizeof(raw->hdr.size), &tmp);
1191                 blk->name_len = wm_coeff_parse_string(sizeof(u8), &tmp,
1192                                                       &blk->name);
1193                 wm_coeff_parse_string(sizeof(u8), &tmp, NULL);
1194                 wm_coeff_parse_string(sizeof(u16), &tmp, NULL);
1195                 blk->ctl_type = wm_coeff_parse_int(sizeof(raw->ctl_type), &tmp);
1196                 blk->flags = wm_coeff_parse_int(sizeof(raw->flags), &tmp);
1197                 blk->len = wm_coeff_parse_int(sizeof(raw->len), &tmp);
1198
1199                 *data = *data + sizeof(raw->hdr) + length;
1200                 break;
1201         }
1202
1203         adsp_dbg(dsp, "\tCoefficient type: %#x\n", blk->mem_type);
1204         adsp_dbg(dsp, "\tCoefficient offset: %#x\n", blk->offset);
1205         adsp_dbg(dsp, "\tCoefficient name: %.*s\n", blk->name_len, blk->name);
1206         adsp_dbg(dsp, "\tCoefficient flags: %#x\n", blk->flags);
1207         adsp_dbg(dsp, "\tALSA control type: %#x\n", blk->ctl_type);
1208         adsp_dbg(dsp, "\tALSA control len: %#x\n", blk->len);
1209 }
1210
1211 static int wm_adsp_parse_coeff(struct wm_adsp *dsp,
1212                                const struct wmfw_region *region)
1213 {
1214         struct wm_adsp_alg_region alg_region = {};
1215         struct wm_coeff_parsed_alg alg_blk;
1216         struct wm_coeff_parsed_coeff coeff_blk;
1217         const u8 *data = region->data;
1218         int i, ret;
1219
1220         wm_coeff_parse_alg(dsp, &data, &alg_blk);
1221         for (i = 0; i < alg_blk.ncoeff; i++) {
1222                 wm_coeff_parse_coeff(dsp, &data, &coeff_blk);
1223
1224                 switch (coeff_blk.ctl_type) {
1225                 case SNDRV_CTL_ELEM_TYPE_BYTES:
1226                         break;
1227                 default:
1228                         adsp_err(dsp, "Unknown control type: %d\n",
1229                                  coeff_blk.ctl_type);
1230                         return -EINVAL;
1231                 }
1232
1233                 alg_region.type = coeff_blk.mem_type;
1234                 alg_region.alg = alg_blk.id;
1235
1236                 ret = wm_adsp_create_control(dsp, &alg_region,
1237                                              coeff_blk.offset,
1238                                              coeff_blk.len,
1239                                              coeff_blk.name,
1240                                              coeff_blk.name_len,
1241                                              coeff_blk.flags);
1242                 if (ret < 0)
1243                         adsp_err(dsp, "Failed to create control: %.*s, %d\n",
1244                                  coeff_blk.name_len, coeff_blk.name, ret);
1245         }
1246
1247         return 0;
1248 }
1249
1250 static int wm_adsp_load(struct wm_adsp *dsp)
1251 {
1252         LIST_HEAD(buf_list);
1253         const struct firmware *firmware;
1254         struct regmap *regmap = dsp->regmap;
1255         unsigned int pos = 0;
1256         const struct wmfw_header *header;
1257         const struct wmfw_adsp1_sizes *adsp1_sizes;
1258         const struct wmfw_adsp2_sizes *adsp2_sizes;
1259         const struct wmfw_footer *footer;
1260         const struct wmfw_region *region;
1261         const struct wm_adsp_region *mem;
1262         const char *region_name;
1263         char *file, *text;
1264         struct wm_adsp_buf *buf;
1265         unsigned int reg;
1266         int regions = 0;
1267         int ret, offset, type, sizes;
1268
1269         file = kzalloc(PAGE_SIZE, GFP_KERNEL);
1270         if (file == NULL)
1271                 return -ENOMEM;
1272
1273         snprintf(file, PAGE_SIZE, "%s-dsp%d-%s.wmfw", dsp->part, dsp->num,
1274                  wm_adsp_fw[dsp->fw].file);
1275         file[PAGE_SIZE - 1] = '\0';
1276
1277         ret = request_firmware(&firmware, file, dsp->dev);
1278         if (ret != 0) {
1279                 adsp_err(dsp, "Failed to request '%s'\n", file);
1280                 goto out;
1281         }
1282         ret = -EINVAL;
1283
1284         pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);
1285         if (pos >= firmware->size) {
1286                 adsp_err(dsp, "%s: file too short, %zu bytes\n",
1287                          file, firmware->size);
1288                 goto out_fw;
1289         }
1290
1291         header = (void *)&firmware->data[0];
1292
1293         if (memcmp(&header->magic[0], "WMFW", 4) != 0) {
1294                 adsp_err(dsp, "%s: invalid magic\n", file);
1295                 goto out_fw;
1296         }
1297
1298         switch (header->ver) {
1299         case 0:
1300                 adsp_warn(dsp, "%s: Depreciated file format %d\n",
1301                           file, header->ver);
1302                 break;
1303         case 1:
1304         case 2:
1305                 break;
1306         default:
1307                 adsp_err(dsp, "%s: unknown file format %d\n",
1308                          file, header->ver);
1309                 goto out_fw;
1310         }
1311
1312         adsp_info(dsp, "Firmware version: %d\n", header->ver);
1313         dsp->fw_ver = header->ver;
1314
1315         if (header->core != dsp->type) {
1316                 adsp_err(dsp, "%s: invalid core %d != %d\n",
1317                          file, header->core, dsp->type);
1318                 goto out_fw;
1319         }
1320
1321         switch (dsp->type) {
1322         case WMFW_ADSP1:
1323                 pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);
1324                 adsp1_sizes = (void *)&(header[1]);
1325                 footer = (void *)&(adsp1_sizes[1]);
1326                 sizes = sizeof(*adsp1_sizes);
1327
1328                 adsp_dbg(dsp, "%s: %d DM, %d PM, %d ZM\n",
1329                          file, le32_to_cpu(adsp1_sizes->dm),
1330                          le32_to_cpu(adsp1_sizes->pm),
1331                          le32_to_cpu(adsp1_sizes->zm));
1332                 break;
1333
1334         case WMFW_ADSP2:
1335                 pos = sizeof(*header) + sizeof(*adsp2_sizes) + sizeof(*footer);
1336                 adsp2_sizes = (void *)&(header[1]);
1337                 footer = (void *)&(adsp2_sizes[1]);
1338                 sizes = sizeof(*adsp2_sizes);
1339
1340                 adsp_dbg(dsp, "%s: %d XM, %d YM %d PM, %d ZM\n",
1341                          file, le32_to_cpu(adsp2_sizes->xm),
1342                          le32_to_cpu(adsp2_sizes->ym),
1343                          le32_to_cpu(adsp2_sizes->pm),
1344                          le32_to_cpu(adsp2_sizes->zm));
1345                 break;
1346
1347         default:
1348                 WARN(1, "Unknown DSP type");
1349                 goto out_fw;
1350         }
1351
1352         if (le32_to_cpu(header->len) != sizeof(*header) +
1353             sizes + sizeof(*footer)) {
1354                 adsp_err(dsp, "%s: unexpected header length %d\n",
1355                          file, le32_to_cpu(header->len));
1356                 goto out_fw;
1357         }
1358
1359         adsp_dbg(dsp, "%s: timestamp %llu\n", file,
1360                  le64_to_cpu(footer->timestamp));
1361
1362         while (pos < firmware->size &&
1363                pos - firmware->size > sizeof(*region)) {
1364                 region = (void *)&(firmware->data[pos]);
1365                 region_name = "Unknown";
1366                 reg = 0;
1367                 text = NULL;
1368                 offset = le32_to_cpu(region->offset) & 0xffffff;
1369                 type = be32_to_cpu(region->type) & 0xff;
1370                 mem = wm_adsp_find_region(dsp, type);
1371
1372                 switch (type) {
1373                 case WMFW_NAME_TEXT:
1374                         region_name = "Firmware name";
1375                         text = kzalloc(le32_to_cpu(region->len) + 1,
1376                                        GFP_KERNEL);
1377                         break;
1378                 case WMFW_ALGORITHM_DATA:
1379                         region_name = "Algorithm";
1380                         ret = wm_adsp_parse_coeff(dsp, region);
1381                         if (ret != 0)
1382                                 goto out_fw;
1383                         break;
1384                 case WMFW_INFO_TEXT:
1385                         region_name = "Information";
1386                         text = kzalloc(le32_to_cpu(region->len) + 1,
1387                                        GFP_KERNEL);
1388                         break;
1389                 case WMFW_ABSOLUTE:
1390                         region_name = "Absolute";
1391                         reg = offset;
1392                         break;
1393                 case WMFW_ADSP1_PM:
1394                         region_name = "PM";
1395                         reg = wm_adsp_region_to_reg(mem, offset);
1396                         break;
1397                 case WMFW_ADSP1_DM:
1398                         region_name = "DM";
1399                         reg = wm_adsp_region_to_reg(mem, offset);
1400                         break;
1401                 case WMFW_ADSP2_XM:
1402                         region_name = "XM";
1403                         reg = wm_adsp_region_to_reg(mem, offset);
1404                         break;
1405                 case WMFW_ADSP2_YM:
1406                         region_name = "YM";
1407                         reg = wm_adsp_region_to_reg(mem, offset);
1408                         break;
1409                 case WMFW_ADSP1_ZM:
1410                         region_name = "ZM";
1411                         reg = wm_adsp_region_to_reg(mem, offset);
1412                         break;
1413                 default:
1414                         adsp_warn(dsp,
1415                                   "%s.%d: Unknown region type %x at %d(%x)\n",
1416                                   file, regions, type, pos, pos);
1417                         break;
1418                 }
1419
1420                 adsp_dbg(dsp, "%s.%d: %d bytes at %d in %s\n", file,
1421                          regions, le32_to_cpu(region->len), offset,
1422                          region_name);
1423
1424                 if (text) {
1425                         memcpy(text, region->data, le32_to_cpu(region->len));
1426                         adsp_info(dsp, "%s: %s\n", file, text);
1427                         kfree(text);
1428                 }
1429
1430                 if (reg) {
1431                         buf = wm_adsp_buf_alloc(region->data,
1432                                                 le32_to_cpu(region->len),
1433                                                 &buf_list);
1434                         if (!buf) {
1435                                 adsp_err(dsp, "Out of memory\n");
1436                                 ret = -ENOMEM;
1437                                 goto out_fw;
1438                         }
1439
1440                         ret = regmap_raw_write_async(regmap, reg, buf->buf,
1441                                                      le32_to_cpu(region->len));
1442                         if (ret != 0) {
1443                                 adsp_err(dsp,
1444                                         "%s.%d: Failed to write %d bytes at %d in %s: %d\n",
1445                                         file, regions,
1446                                         le32_to_cpu(region->len), offset,
1447                                         region_name, ret);
1448                                 goto out_fw;
1449                         }
1450                 }
1451
1452                 pos += le32_to_cpu(region->len) + sizeof(*region);
1453                 regions++;
1454         }
1455
1456         ret = regmap_async_complete(regmap);
1457         if (ret != 0) {
1458                 adsp_err(dsp, "Failed to complete async write: %d\n", ret);
1459                 goto out_fw;
1460         }
1461
1462         if (pos > firmware->size)
1463                 adsp_warn(dsp, "%s.%d: %zu bytes at end of file\n",
1464                           file, regions, pos - firmware->size);
1465
1466         wm_adsp_debugfs_save_wmfwname(dsp, file);
1467
1468 out_fw:
1469         regmap_async_complete(regmap);
1470         wm_adsp_buf_free(&buf_list);
1471         release_firmware(firmware);
1472 out:
1473         kfree(file);
1474
1475         return ret;
1476 }
1477
1478 static void wm_adsp_ctl_fixup_base(struct wm_adsp *dsp,
1479                                   const struct wm_adsp_alg_region *alg_region)
1480 {
1481         struct wm_coeff_ctl *ctl;
1482
1483         list_for_each_entry(ctl, &dsp->ctl_list, list) {
1484                 if (ctl->fw_name == wm_adsp_fw_text[dsp->fw] &&
1485                     alg_region->alg == ctl->alg_region.alg &&
1486                     alg_region->type == ctl->alg_region.type) {
1487                         ctl->alg_region.base = alg_region->base;
1488                 }
1489         }
1490 }
1491
1492 static void *wm_adsp_read_algs(struct wm_adsp *dsp, size_t n_algs,
1493                                unsigned int pos, unsigned int len)
1494 {
1495         void *alg;
1496         int ret;
1497         __be32 val;
1498
1499         if (n_algs == 0) {
1500                 adsp_err(dsp, "No algorithms\n");
1501                 return ERR_PTR(-EINVAL);
1502         }
1503
1504         if (n_algs > 1024) {
1505                 adsp_err(dsp, "Algorithm count %zx excessive\n", n_algs);
1506                 return ERR_PTR(-EINVAL);
1507         }
1508
1509         /* Read the terminator first to validate the length */
1510         ret = regmap_raw_read(dsp->regmap, pos + len, &val, sizeof(val));
1511         if (ret != 0) {
1512                 adsp_err(dsp, "Failed to read algorithm list end: %d\n",
1513                         ret);
1514                 return ERR_PTR(ret);
1515         }
1516
1517         if (be32_to_cpu(val) != 0xbedead)
1518                 adsp_warn(dsp, "Algorithm list end %x 0x%x != 0xbeadead\n",
1519                           pos + len, be32_to_cpu(val));
1520
1521         alg = kzalloc(len * 2, GFP_KERNEL | GFP_DMA);
1522         if (!alg)
1523                 return ERR_PTR(-ENOMEM);
1524
1525         ret = regmap_raw_read(dsp->regmap, pos, alg, len * 2);
1526         if (ret != 0) {
1527                 adsp_err(dsp, "Failed to read algorithm list: %d\n",
1528                         ret);
1529                 kfree(alg);
1530                 return ERR_PTR(ret);
1531         }
1532
1533         return alg;
1534 }
1535
1536 static struct wm_adsp_alg_region *
1537         wm_adsp_find_alg_region(struct wm_adsp *dsp, int type, unsigned int id)
1538 {
1539         struct wm_adsp_alg_region *alg_region;
1540
1541         list_for_each_entry(alg_region, &dsp->alg_regions, list) {
1542                 if (id == alg_region->alg && type == alg_region->type)
1543                         return alg_region;
1544         }
1545
1546         return NULL;
1547 }
1548
1549 static struct wm_adsp_alg_region *wm_adsp_create_region(struct wm_adsp *dsp,
1550                                                         int type, __be32 id,
1551                                                         __be32 base)
1552 {
1553         struct wm_adsp_alg_region *alg_region;
1554
1555         alg_region = kzalloc(sizeof(*alg_region), GFP_KERNEL);
1556         if (!alg_region)
1557                 return ERR_PTR(-ENOMEM);
1558
1559         alg_region->type = type;
1560         alg_region->alg = be32_to_cpu(id);
1561         alg_region->base = be32_to_cpu(base);
1562
1563         list_add_tail(&alg_region->list, &dsp->alg_regions);
1564
1565         if (dsp->fw_ver > 0)
1566                 wm_adsp_ctl_fixup_base(dsp, alg_region);
1567
1568         return alg_region;
1569 }
1570
1571 static int wm_adsp1_setup_algs(struct wm_adsp *dsp)
1572 {
1573         struct wmfw_adsp1_id_hdr adsp1_id;
1574         struct wmfw_adsp1_alg_hdr *adsp1_alg;
1575         struct wm_adsp_alg_region *alg_region;
1576         const struct wm_adsp_region *mem;
1577         unsigned int pos, len;
1578         size_t n_algs;
1579         int i, ret;
1580
1581         mem = wm_adsp_find_region(dsp, WMFW_ADSP1_DM);
1582         if (WARN_ON(!mem))
1583                 return -EINVAL;
1584
1585         ret = regmap_raw_read(dsp->regmap, mem->base, &adsp1_id,
1586                               sizeof(adsp1_id));
1587         if (ret != 0) {
1588                 adsp_err(dsp, "Failed to read algorithm info: %d\n",
1589                          ret);
1590                 return ret;
1591         }
1592
1593         n_algs = be32_to_cpu(adsp1_id.n_algs);
1594         dsp->fw_id = be32_to_cpu(adsp1_id.fw.id);
1595         adsp_info(dsp, "Firmware: %x v%d.%d.%d, %zu algorithms\n",
1596                   dsp->fw_id,
1597                   (be32_to_cpu(adsp1_id.fw.ver) & 0xff0000) >> 16,
1598                   (be32_to_cpu(adsp1_id.fw.ver) & 0xff00) >> 8,
1599                   be32_to_cpu(adsp1_id.fw.ver) & 0xff,
1600                   n_algs);
1601
1602         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_ZM,
1603                                            adsp1_id.fw.id, adsp1_id.zm);
1604         if (IS_ERR(alg_region))
1605                 return PTR_ERR(alg_region);
1606
1607         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_DM,
1608                                            adsp1_id.fw.id, adsp1_id.dm);
1609         if (IS_ERR(alg_region))
1610                 return PTR_ERR(alg_region);
1611
1612         pos = sizeof(adsp1_id) / 2;
1613         len = (sizeof(*adsp1_alg) * n_algs) / 2;
1614
1615         adsp1_alg = wm_adsp_read_algs(dsp, n_algs, mem->base + pos, len);
1616         if (IS_ERR(adsp1_alg))
1617                 return PTR_ERR(adsp1_alg);
1618
1619         for (i = 0; i < n_algs; i++) {
1620                 adsp_info(dsp, "%d: ID %x v%d.%d.%d DM@%x ZM@%x\n",
1621                           i, be32_to_cpu(adsp1_alg[i].alg.id),
1622                           (be32_to_cpu(adsp1_alg[i].alg.ver) & 0xff0000) >> 16,
1623                           (be32_to_cpu(adsp1_alg[i].alg.ver) & 0xff00) >> 8,
1624                           be32_to_cpu(adsp1_alg[i].alg.ver) & 0xff,
1625                           be32_to_cpu(adsp1_alg[i].dm),
1626                           be32_to_cpu(adsp1_alg[i].zm));
1627
1628                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_DM,
1629                                                    adsp1_alg[i].alg.id,
1630                                                    adsp1_alg[i].dm);
1631                 if (IS_ERR(alg_region)) {
1632                         ret = PTR_ERR(alg_region);
1633                         goto out;
1634                 }
1635                 if (dsp->fw_ver == 0) {
1636                         if (i + 1 < n_algs) {
1637                                 len = be32_to_cpu(adsp1_alg[i + 1].dm);
1638                                 len -= be32_to_cpu(adsp1_alg[i].dm);
1639                                 len *= 4;
1640                                 wm_adsp_create_control(dsp, alg_region, 0,
1641                                                        len, NULL, 0, 0);
1642                         } else {
1643                                 adsp_warn(dsp, "Missing length info for region DM with ID %x\n",
1644                                           be32_to_cpu(adsp1_alg[i].alg.id));
1645                         }
1646                 }
1647
1648                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_ZM,
1649                                                    adsp1_alg[i].alg.id,
1650                                                    adsp1_alg[i].zm);
1651                 if (IS_ERR(alg_region)) {
1652                         ret = PTR_ERR(alg_region);
1653                         goto out;
1654                 }
1655                 if (dsp->fw_ver == 0) {
1656                         if (i + 1 < n_algs) {
1657                                 len = be32_to_cpu(adsp1_alg[i + 1].zm);
1658                                 len -= be32_to_cpu(adsp1_alg[i].zm);
1659                                 len *= 4;
1660                                 wm_adsp_create_control(dsp, alg_region, 0,
1661                                                        len, NULL, 0, 0);
1662                         } else {
1663                                 adsp_warn(dsp, "Missing length info for region ZM with ID %x\n",
1664                                           be32_to_cpu(adsp1_alg[i].alg.id));
1665                         }
1666                 }
1667         }
1668
1669 out:
1670         kfree(adsp1_alg);
1671         return ret;
1672 }
1673
1674 static int wm_adsp2_setup_algs(struct wm_adsp *dsp)
1675 {
1676         struct wmfw_adsp2_id_hdr adsp2_id;
1677         struct wmfw_adsp2_alg_hdr *adsp2_alg;
1678         struct wm_adsp_alg_region *alg_region;
1679         const struct wm_adsp_region *mem;
1680         unsigned int pos, len;
1681         size_t n_algs;
1682         int i, ret;
1683
1684         mem = wm_adsp_find_region(dsp, WMFW_ADSP2_XM);
1685         if (WARN_ON(!mem))
1686                 return -EINVAL;
1687
1688         ret = regmap_raw_read(dsp->regmap, mem->base, &adsp2_id,
1689                               sizeof(adsp2_id));
1690         if (ret != 0) {
1691                 adsp_err(dsp, "Failed to read algorithm info: %d\n",
1692                          ret);
1693                 return ret;
1694         }
1695
1696         n_algs = be32_to_cpu(adsp2_id.n_algs);
1697         dsp->fw_id = be32_to_cpu(adsp2_id.fw.id);
1698         dsp->fw_id_version = be32_to_cpu(adsp2_id.fw.ver);
1699         adsp_info(dsp, "Firmware: %x v%d.%d.%d, %zu algorithms\n",
1700                   dsp->fw_id,
1701                   (dsp->fw_id_version & 0xff0000) >> 16,
1702                   (dsp->fw_id_version & 0xff00) >> 8,
1703                   dsp->fw_id_version & 0xff,
1704                   n_algs);
1705
1706         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_XM,
1707                                            adsp2_id.fw.id, adsp2_id.xm);
1708         if (IS_ERR(alg_region))
1709                 return PTR_ERR(alg_region);
1710
1711         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_YM,
1712                                            adsp2_id.fw.id, adsp2_id.ym);
1713         if (IS_ERR(alg_region))
1714                 return PTR_ERR(alg_region);
1715
1716         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_ZM,
1717                                            adsp2_id.fw.id, adsp2_id.zm);
1718         if (IS_ERR(alg_region))
1719                 return PTR_ERR(alg_region);
1720
1721         pos = sizeof(adsp2_id) / 2;
1722         len = (sizeof(*adsp2_alg) * n_algs) / 2;
1723
1724         adsp2_alg = wm_adsp_read_algs(dsp, n_algs, mem->base + pos, len);
1725         if (IS_ERR(adsp2_alg))
1726                 return PTR_ERR(adsp2_alg);
1727
1728         for (i = 0; i < n_algs; i++) {
1729                 adsp_info(dsp,
1730                           "%d: ID %x v%d.%d.%d XM@%x YM@%x ZM@%x\n",
1731                           i, be32_to_cpu(adsp2_alg[i].alg.id),
1732                           (be32_to_cpu(adsp2_alg[i].alg.ver) & 0xff0000) >> 16,
1733                           (be32_to_cpu(adsp2_alg[i].alg.ver) & 0xff00) >> 8,
1734                           be32_to_cpu(adsp2_alg[i].alg.ver) & 0xff,
1735                           be32_to_cpu(adsp2_alg[i].xm),
1736                           be32_to_cpu(adsp2_alg[i].ym),
1737                           be32_to_cpu(adsp2_alg[i].zm));
1738
1739                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_XM,
1740                                                    adsp2_alg[i].alg.id,
1741                                                    adsp2_alg[i].xm);
1742                 if (IS_ERR(alg_region)) {
1743                         ret = PTR_ERR(alg_region);
1744                         goto out;
1745                 }
1746                 if (dsp->fw_ver == 0) {
1747                         if (i + 1 < n_algs) {
1748                                 len = be32_to_cpu(adsp2_alg[i + 1].xm);
1749                                 len -= be32_to_cpu(adsp2_alg[i].xm);
1750                                 len *= 4;
1751                                 wm_adsp_create_control(dsp, alg_region, 0,
1752                                                        len, NULL, 0, 0);
1753                         } else {
1754                                 adsp_warn(dsp, "Missing length info for region XM with ID %x\n",
1755                                           be32_to_cpu(adsp2_alg[i].alg.id));
1756                         }
1757                 }
1758
1759                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_YM,
1760                                                    adsp2_alg[i].alg.id,
1761                                                    adsp2_alg[i].ym);
1762                 if (IS_ERR(alg_region)) {
1763                         ret = PTR_ERR(alg_region);
1764                         goto out;
1765                 }
1766                 if (dsp->fw_ver == 0) {
1767                         if (i + 1 < n_algs) {
1768                                 len = be32_to_cpu(adsp2_alg[i + 1].ym);
1769                                 len -= be32_to_cpu(adsp2_alg[i].ym);
1770                                 len *= 4;
1771                                 wm_adsp_create_control(dsp, alg_region, 0,
1772                                                        len, NULL, 0, 0);
1773                         } else {
1774                                 adsp_warn(dsp, "Missing length info for region YM with ID %x\n",
1775                                           be32_to_cpu(adsp2_alg[i].alg.id));
1776                         }
1777                 }
1778
1779                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_ZM,
1780                                                    adsp2_alg[i].alg.id,
1781                                                    adsp2_alg[i].zm);
1782                 if (IS_ERR(alg_region)) {
1783                         ret = PTR_ERR(alg_region);
1784                         goto out;
1785                 }
1786                 if (dsp->fw_ver == 0) {
1787                         if (i + 1 < n_algs) {
1788                                 len = be32_to_cpu(adsp2_alg[i + 1].zm);
1789                                 len -= be32_to_cpu(adsp2_alg[i].zm);
1790                                 len *= 4;
1791                                 wm_adsp_create_control(dsp, alg_region, 0,
1792                                                        len, NULL, 0, 0);
1793                         } else {
1794                                 adsp_warn(dsp, "Missing length info for region ZM with ID %x\n",
1795                                           be32_to_cpu(adsp2_alg[i].alg.id));
1796                         }
1797                 }
1798         }
1799
1800 out:
1801         kfree(adsp2_alg);
1802         return ret;
1803 }
1804
1805 static int wm_adsp_load_coeff(struct wm_adsp *dsp)
1806 {
1807         LIST_HEAD(buf_list);
1808         struct regmap *regmap = dsp->regmap;
1809         struct wmfw_coeff_hdr *hdr;
1810         struct wmfw_coeff_item *blk;
1811         const struct firmware *firmware;
1812         const struct wm_adsp_region *mem;
1813         struct wm_adsp_alg_region *alg_region;
1814         const char *region_name;
1815         int ret, pos, blocks, type, offset, reg;
1816         char *file;
1817         struct wm_adsp_buf *buf;
1818
1819         file = kzalloc(PAGE_SIZE, GFP_KERNEL);
1820         if (file == NULL)
1821                 return -ENOMEM;
1822
1823         snprintf(file, PAGE_SIZE, "%s-dsp%d-%s.bin", dsp->part, dsp->num,
1824                  wm_adsp_fw[dsp->fw].file);
1825         file[PAGE_SIZE - 1] = '\0';
1826
1827         ret = request_firmware(&firmware, file, dsp->dev);
1828         if (ret != 0) {
1829                 adsp_warn(dsp, "Failed to request '%s'\n", file);
1830                 ret = 0;
1831                 goto out;
1832         }
1833         ret = -EINVAL;
1834
1835         if (sizeof(*hdr) >= firmware->size) {
1836                 adsp_err(dsp, "%s: file too short, %zu bytes\n",
1837                         file, firmware->size);
1838                 goto out_fw;
1839         }
1840
1841         hdr = (void *)&firmware->data[0];
1842         if (memcmp(hdr->magic, "WMDR", 4) != 0) {
1843                 adsp_err(dsp, "%s: invalid magic\n", file);
1844                 goto out_fw;
1845         }
1846
1847         switch (be32_to_cpu(hdr->rev) & 0xff) {
1848         case 1:
1849                 break;
1850         default:
1851                 adsp_err(dsp, "%s: Unsupported coefficient file format %d\n",
1852                          file, be32_to_cpu(hdr->rev) & 0xff);
1853                 ret = -EINVAL;
1854                 goto out_fw;
1855         }
1856
1857         adsp_dbg(dsp, "%s: v%d.%d.%d\n", file,
1858                 (le32_to_cpu(hdr->ver) >> 16) & 0xff,
1859                 (le32_to_cpu(hdr->ver) >>  8) & 0xff,
1860                 le32_to_cpu(hdr->ver) & 0xff);
1861
1862         pos = le32_to_cpu(hdr->len);
1863
1864         blocks = 0;
1865         while (pos < firmware->size &&
1866                pos - firmware->size > sizeof(*blk)) {
1867                 blk = (void *)(&firmware->data[pos]);
1868
1869                 type = le16_to_cpu(blk->type);
1870                 offset = le16_to_cpu(blk->offset);
1871
1872                 adsp_dbg(dsp, "%s.%d: %x v%d.%d.%d\n",
1873                          file, blocks, le32_to_cpu(blk->id),
1874                          (le32_to_cpu(blk->ver) >> 16) & 0xff,
1875                          (le32_to_cpu(blk->ver) >>  8) & 0xff,
1876                          le32_to_cpu(blk->ver) & 0xff);
1877                 adsp_dbg(dsp, "%s.%d: %d bytes at 0x%x in %x\n",
1878                          file, blocks, le32_to_cpu(blk->len), offset, type);
1879
1880                 reg = 0;
1881                 region_name = "Unknown";
1882                 switch (type) {
1883                 case (WMFW_NAME_TEXT << 8):
1884                 case (WMFW_INFO_TEXT << 8):
1885                         break;
1886                 case (WMFW_ABSOLUTE << 8):
1887                         /*
1888                          * Old files may use this for global
1889                          * coefficients.
1890                          */
1891                         if (le32_to_cpu(blk->id) == dsp->fw_id &&
1892                             offset == 0) {
1893                                 region_name = "global coefficients";
1894                                 mem = wm_adsp_find_region(dsp, type);
1895                                 if (!mem) {
1896                                         adsp_err(dsp, "No ZM\n");
1897                                         break;
1898                                 }
1899                                 reg = wm_adsp_region_to_reg(mem, 0);
1900
1901                         } else {
1902                                 region_name = "register";
1903                                 reg = offset;
1904                         }
1905                         break;
1906
1907                 case WMFW_ADSP1_DM:
1908                 case WMFW_ADSP1_ZM:
1909                 case WMFW_ADSP2_XM:
1910                 case WMFW_ADSP2_YM:
1911                         adsp_dbg(dsp, "%s.%d: %d bytes in %x for %x\n",
1912                                  file, blocks, le32_to_cpu(blk->len),
1913                                  type, le32_to_cpu(blk->id));
1914
1915                         mem = wm_adsp_find_region(dsp, type);
1916                         if (!mem) {
1917                                 adsp_err(dsp, "No base for region %x\n", type);
1918                                 break;
1919                         }
1920
1921                         alg_region = wm_adsp_find_alg_region(dsp, type,
1922                                                 le32_to_cpu(blk->id));
1923                         if (alg_region) {
1924                                 reg = alg_region->base;
1925                                 reg = wm_adsp_region_to_reg(mem, reg);
1926                                 reg += offset;
1927                         } else {
1928                                 adsp_err(dsp, "No %x for algorithm %x\n",
1929                                          type, le32_to_cpu(blk->id));
1930                         }
1931                         break;
1932
1933                 default:
1934                         adsp_err(dsp, "%s.%d: Unknown region type %x at %d\n",
1935                                  file, blocks, type, pos);
1936                         break;
1937                 }
1938
1939                 if (reg) {
1940                         buf = wm_adsp_buf_alloc(blk->data,
1941                                                 le32_to_cpu(blk->len),
1942                                                 &buf_list);
1943                         if (!buf) {
1944                                 adsp_err(dsp, "Out of memory\n");
1945                                 ret = -ENOMEM;
1946                                 goto out_fw;
1947                         }
1948
1949                         adsp_dbg(dsp, "%s.%d: Writing %d bytes at %x\n",
1950                                  file, blocks, le32_to_cpu(blk->len),
1951                                  reg);
1952                         ret = regmap_raw_write_async(regmap, reg, buf->buf,
1953                                                      le32_to_cpu(blk->len));
1954                         if (ret != 0) {
1955                                 adsp_err(dsp,
1956                                         "%s.%d: Failed to write to %x in %s: %d\n",
1957                                         file, blocks, reg, region_name, ret);
1958                         }
1959                 }
1960
1961                 pos += (le32_to_cpu(blk->len) + sizeof(*blk) + 3) & ~0x03;
1962                 blocks++;
1963         }
1964
1965         ret = regmap_async_complete(regmap);
1966         if (ret != 0)
1967                 adsp_err(dsp, "Failed to complete async write: %d\n", ret);
1968
1969         if (pos > firmware->size)
1970                 adsp_warn(dsp, "%s.%d: %zu bytes at end of file\n",
1971                           file, blocks, pos - firmware->size);
1972
1973         wm_adsp_debugfs_save_binname(dsp, file);
1974
1975 out_fw:
1976         regmap_async_complete(regmap);
1977         release_firmware(firmware);
1978         wm_adsp_buf_free(&buf_list);
1979 out:
1980         kfree(file);
1981         return ret;
1982 }
1983
1984 int wm_adsp1_init(struct wm_adsp *dsp)
1985 {
1986         INIT_LIST_HEAD(&dsp->alg_regions);
1987
1988         mutex_init(&dsp->pwr_lock);
1989
1990         return 0;
1991 }
1992 EXPORT_SYMBOL_GPL(wm_adsp1_init);
1993
1994 int wm_adsp1_event(struct snd_soc_dapm_widget *w,
1995                    struct snd_kcontrol *kcontrol,
1996                    int event)
1997 {
1998         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
1999         struct wm_adsp *dsps = snd_soc_codec_get_drvdata(codec);
2000         struct wm_adsp *dsp = &dsps[w->shift];
2001         struct wm_adsp_alg_region *alg_region;
2002         struct wm_coeff_ctl *ctl;
2003         int ret;
2004         unsigned int val;
2005
2006         dsp->card = codec->component.card;
2007
2008         mutex_lock(&dsp->pwr_lock);
2009
2010         switch (event) {
2011         case SND_SOC_DAPM_POST_PMU:
2012                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2013                                    ADSP1_SYS_ENA, ADSP1_SYS_ENA);
2014
2015                 /*
2016                  * For simplicity set the DSP clock rate to be the
2017                  * SYSCLK rate rather than making it configurable.
2018                  */
2019                 if (dsp->sysclk_reg) {
2020                         ret = regmap_read(dsp->regmap, dsp->sysclk_reg, &val);
2021                         if (ret != 0) {
2022                                 adsp_err(dsp, "Failed to read SYSCLK state: %d\n",
2023                                 ret);
2024                                 goto err_mutex;
2025                         }
2026
2027                         val = (val & dsp->sysclk_mask)
2028                                 >> dsp->sysclk_shift;
2029
2030                         ret = regmap_update_bits(dsp->regmap,
2031                                                  dsp->base + ADSP1_CONTROL_31,
2032                                                  ADSP1_CLK_SEL_MASK, val);
2033                         if (ret != 0) {
2034                                 adsp_err(dsp, "Failed to set clock rate: %d\n",
2035                                          ret);
2036                                 goto err_mutex;
2037                         }
2038                 }
2039
2040                 ret = wm_adsp_load(dsp);
2041                 if (ret != 0)
2042                         goto err_ena;
2043
2044                 ret = wm_adsp1_setup_algs(dsp);
2045                 if (ret != 0)
2046                         goto err_ena;
2047
2048                 ret = wm_adsp_load_coeff(dsp);
2049                 if (ret != 0)
2050                         goto err_ena;
2051
2052                 /* Initialize caches for enabled and unset controls */
2053                 ret = wm_coeff_init_control_caches(dsp);
2054                 if (ret != 0)
2055                         goto err_ena;
2056
2057                 /* Sync set controls */
2058                 ret = wm_coeff_sync_controls(dsp);
2059                 if (ret != 0)
2060                         goto err_ena;
2061
2062                 /* Start the core running */
2063                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2064                                    ADSP1_CORE_ENA | ADSP1_START,
2065                                    ADSP1_CORE_ENA | ADSP1_START);
2066                 break;
2067
2068         case SND_SOC_DAPM_PRE_PMD:
2069                 /* Halt the core */
2070                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2071                                    ADSP1_CORE_ENA | ADSP1_START, 0);
2072
2073                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_19,
2074                                    ADSP1_WDMA_BUFFER_LENGTH_MASK, 0);
2075
2076                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2077                                    ADSP1_SYS_ENA, 0);
2078
2079                 list_for_each_entry(ctl, &dsp->ctl_list, list)
2080                         ctl->enabled = 0;
2081
2082                 while (!list_empty(&dsp->alg_regions)) {
2083                         alg_region = list_first_entry(&dsp->alg_regions,
2084                                                       struct wm_adsp_alg_region,
2085                                                       list);
2086                         list_del(&alg_region->list);
2087                         kfree(alg_region);
2088                 }
2089                 break;
2090
2091         default:
2092                 break;
2093         }
2094
2095         mutex_unlock(&dsp->pwr_lock);
2096
2097         return 0;
2098
2099 err_ena:
2100         regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2101                            ADSP1_SYS_ENA, 0);
2102 err_mutex:
2103         mutex_unlock(&dsp->pwr_lock);
2104
2105         return ret;
2106 }
2107 EXPORT_SYMBOL_GPL(wm_adsp1_event);
2108
2109 static int wm_adsp2_ena(struct wm_adsp *dsp)
2110 {
2111         unsigned int val;
2112         int ret, count;
2113
2114         ret = regmap_update_bits_async(dsp->regmap, dsp->base + ADSP2_CONTROL,
2115                                        ADSP2_SYS_ENA, ADSP2_SYS_ENA);
2116         if (ret != 0)
2117                 return ret;
2118
2119         /* Wait for the RAM to start, should be near instantaneous */
2120         for (count = 0; count < 10; ++count) {
2121                 ret = regmap_read(dsp->regmap, dsp->base + ADSP2_STATUS1,
2122                                   &val);
2123                 if (ret != 0)
2124                         return ret;
2125
2126                 if (val & ADSP2_RAM_RDY)
2127                         break;
2128
2129                 msleep(1);
2130         }
2131
2132         if (!(val & ADSP2_RAM_RDY)) {
2133                 adsp_err(dsp, "Failed to start DSP RAM\n");
2134                 return -EBUSY;
2135         }
2136
2137         adsp_dbg(dsp, "RAM ready after %d polls\n", count);
2138
2139         return 0;
2140 }
2141
2142 static void wm_adsp2_boot_work(struct work_struct *work)
2143 {
2144         struct wm_adsp *dsp = container_of(work,
2145                                            struct wm_adsp,
2146                                            boot_work);
2147         int ret;
2148
2149         mutex_lock(&dsp->pwr_lock);
2150
2151         ret = wm_adsp2_ena(dsp);
2152         if (ret != 0)
2153                 goto err_mutex;
2154
2155         ret = wm_adsp_load(dsp);
2156         if (ret != 0)
2157                 goto err_ena;
2158
2159         ret = wm_adsp2_setup_algs(dsp);
2160         if (ret != 0)
2161                 goto err_ena;
2162
2163         ret = wm_adsp_load_coeff(dsp);
2164         if (ret != 0)
2165                 goto err_ena;
2166
2167         /* Initialize caches for enabled and unset controls */
2168         ret = wm_coeff_init_control_caches(dsp);
2169         if (ret != 0)
2170                 goto err_ena;
2171
2172         /* Sync set controls */
2173         ret = wm_coeff_sync_controls(dsp);
2174         if (ret != 0)
2175                 goto err_ena;
2176
2177         dsp->running = true;
2178
2179         mutex_unlock(&dsp->pwr_lock);
2180
2181         return;
2182
2183 err_ena:
2184         regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2185                            ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0);
2186 err_mutex:
2187         mutex_unlock(&dsp->pwr_lock);
2188 }
2189
2190 static void wm_adsp2_set_dspclk(struct wm_adsp *dsp, unsigned int freq)
2191 {
2192         int ret;
2193
2194         ret = regmap_update_bits_async(dsp->regmap,
2195                                        dsp->base + ADSP2_CLOCKING,
2196                                        ADSP2_CLK_SEL_MASK,
2197                                        freq << ADSP2_CLK_SEL_SHIFT);
2198         if (ret != 0)
2199                 adsp_err(dsp, "Failed to set clock rate: %d\n", ret);
2200 }
2201
2202 int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
2203                          struct snd_kcontrol *kcontrol, int event,
2204                          unsigned int freq)
2205 {
2206         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
2207         struct wm_adsp *dsps = snd_soc_codec_get_drvdata(codec);
2208         struct wm_adsp *dsp = &dsps[w->shift];
2209
2210         dsp->card = codec->component.card;
2211
2212         switch (event) {
2213         case SND_SOC_DAPM_PRE_PMU:
2214                 wm_adsp2_set_dspclk(dsp, freq);
2215                 queue_work(system_unbound_wq, &dsp->boot_work);
2216                 break;
2217         default:
2218                 break;
2219         }
2220
2221         return 0;
2222 }
2223 EXPORT_SYMBOL_GPL(wm_adsp2_early_event);
2224
2225 int wm_adsp2_event(struct snd_soc_dapm_widget *w,
2226                    struct snd_kcontrol *kcontrol, int event)
2227 {
2228         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
2229         struct wm_adsp *dsps = snd_soc_codec_get_drvdata(codec);
2230         struct wm_adsp *dsp = &dsps[w->shift];
2231         struct wm_adsp_alg_region *alg_region;
2232         struct wm_coeff_ctl *ctl;
2233         int ret;
2234
2235         switch (event) {
2236         case SND_SOC_DAPM_POST_PMU:
2237                 flush_work(&dsp->boot_work);
2238
2239                 if (!dsp->running)
2240                         return -EIO;
2241
2242                 ret = regmap_update_bits(dsp->regmap,
2243                                          dsp->base + ADSP2_CONTROL,
2244                                          ADSP2_CORE_ENA | ADSP2_START,
2245                                          ADSP2_CORE_ENA | ADSP2_START);
2246                 if (ret != 0)
2247                         goto err;
2248
2249                 if (wm_adsp_fw[dsp->fw].num_caps != 0)
2250                         ret = wm_adsp_buffer_init(dsp);
2251
2252                 break;
2253
2254         case SND_SOC_DAPM_PRE_PMD:
2255                 /* Log firmware state, it can be useful for analysis */
2256                 wm_adsp2_show_fw_status(dsp);
2257
2258                 mutex_lock(&dsp->pwr_lock);
2259
2260                 wm_adsp_debugfs_clear(dsp);
2261
2262                 dsp->fw_id = 0;
2263                 dsp->fw_id_version = 0;
2264                 dsp->running = false;
2265
2266                 regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2267                                    ADSP2_SYS_ENA | ADSP2_CORE_ENA |
2268                                    ADSP2_START, 0);
2269
2270                 /* Make sure DMAs are quiesced */
2271                 regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_1, 0);
2272                 regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_2, 0);
2273                 regmap_write(dsp->regmap, dsp->base + ADSP2_RDMA_CONFIG_1, 0);
2274
2275                 list_for_each_entry(ctl, &dsp->ctl_list, list)
2276                         ctl->enabled = 0;
2277
2278                 while (!list_empty(&dsp->alg_regions)) {
2279                         alg_region = list_first_entry(&dsp->alg_regions,
2280                                                       struct wm_adsp_alg_region,
2281                                                       list);
2282                         list_del(&alg_region->list);
2283                         kfree(alg_region);
2284                 }
2285
2286                 if (wm_adsp_fw[dsp->fw].num_caps != 0)
2287                         wm_adsp_buffer_free(dsp);
2288
2289                 mutex_unlock(&dsp->pwr_lock);
2290
2291                 adsp_dbg(dsp, "Shutdown complete\n");
2292                 break;
2293
2294         default:
2295                 break;
2296         }
2297
2298         return 0;
2299 err:
2300         regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2301                            ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0);
2302         return ret;
2303 }
2304 EXPORT_SYMBOL_GPL(wm_adsp2_event);
2305
2306 int wm_adsp2_codec_probe(struct wm_adsp *dsp, struct snd_soc_codec *codec)
2307 {
2308         wm_adsp2_init_debugfs(dsp, codec);
2309
2310         return snd_soc_add_codec_controls(codec,
2311                                           &wm_adsp_fw_controls[dsp->num - 1],
2312                                           1);
2313 }
2314 EXPORT_SYMBOL_GPL(wm_adsp2_codec_probe);
2315
2316 int wm_adsp2_codec_remove(struct wm_adsp *dsp, struct snd_soc_codec *codec)
2317 {
2318         wm_adsp2_cleanup_debugfs(dsp);
2319
2320         return 0;
2321 }
2322 EXPORT_SYMBOL_GPL(wm_adsp2_codec_remove);
2323
2324 int wm_adsp2_init(struct wm_adsp *dsp)
2325 {
2326         int ret;
2327
2328         /*
2329          * Disable the DSP memory by default when in reset for a small
2330          * power saving.
2331          */
2332         ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2333                                  ADSP2_MEM_ENA, 0);
2334         if (ret != 0) {
2335                 adsp_err(dsp, "Failed to clear memory retention: %d\n", ret);
2336                 return ret;
2337         }
2338
2339         INIT_LIST_HEAD(&dsp->alg_regions);
2340         INIT_LIST_HEAD(&dsp->ctl_list);
2341         INIT_WORK(&dsp->boot_work, wm_adsp2_boot_work);
2342
2343         mutex_init(&dsp->pwr_lock);
2344
2345         return 0;
2346 }
2347 EXPORT_SYMBOL_GPL(wm_adsp2_init);
2348
2349 int wm_adsp_compr_open(struct wm_adsp *dsp, struct snd_compr_stream *stream)
2350 {
2351         struct wm_adsp_compr *compr;
2352         int ret = 0;
2353
2354         mutex_lock(&dsp->pwr_lock);
2355
2356         if (wm_adsp_fw[dsp->fw].num_caps == 0) {
2357                 adsp_err(dsp, "Firmware does not support compressed API\n");
2358                 ret = -ENXIO;
2359                 goto out;
2360         }
2361
2362         if (wm_adsp_fw[dsp->fw].compr_direction != stream->direction) {
2363                 adsp_err(dsp, "Firmware does not support stream direction\n");
2364                 ret = -EINVAL;
2365                 goto out;
2366         }
2367
2368         if (dsp->compr) {
2369                 /* It is expect this limitation will be removed in future */
2370                 adsp_err(dsp, "Only a single stream supported per DSP\n");
2371                 ret = -EBUSY;
2372                 goto out;
2373         }
2374
2375         compr = kzalloc(sizeof(*compr), GFP_KERNEL);
2376         if (!compr) {
2377                 ret = -ENOMEM;
2378                 goto out;
2379         }
2380
2381         compr->dsp = dsp;
2382         compr->stream = stream;
2383
2384         dsp->compr = compr;
2385
2386         stream->runtime->private_data = compr;
2387
2388 out:
2389         mutex_unlock(&dsp->pwr_lock);
2390
2391         return ret;
2392 }
2393 EXPORT_SYMBOL_GPL(wm_adsp_compr_open);
2394
2395 int wm_adsp_compr_free(struct snd_compr_stream *stream)
2396 {
2397         struct wm_adsp_compr *compr = stream->runtime->private_data;
2398         struct wm_adsp *dsp = compr->dsp;
2399
2400         mutex_lock(&dsp->pwr_lock);
2401
2402         dsp->compr = NULL;
2403
2404         kfree(compr->raw_buf);
2405         kfree(compr);
2406
2407         mutex_unlock(&dsp->pwr_lock);
2408
2409         return 0;
2410 }
2411 EXPORT_SYMBOL_GPL(wm_adsp_compr_free);
2412
2413 static int wm_adsp_compr_check_params(struct snd_compr_stream *stream,
2414                                       struct snd_compr_params *params)
2415 {
2416         struct wm_adsp_compr *compr = stream->runtime->private_data;
2417         struct wm_adsp *dsp = compr->dsp;
2418         const struct wm_adsp_fw_caps *caps;
2419         const struct snd_codec_desc *desc;
2420         int i, j;
2421
2422         if (params->buffer.fragment_size < WM_ADSP_MIN_FRAGMENT_SIZE ||
2423             params->buffer.fragment_size > WM_ADSP_MAX_FRAGMENT_SIZE ||
2424             params->buffer.fragments < WM_ADSP_MIN_FRAGMENTS ||
2425             params->buffer.fragments > WM_ADSP_MAX_FRAGMENTS ||
2426             params->buffer.fragment_size % WM_ADSP_DATA_WORD_SIZE) {
2427                 adsp_err(dsp, "Invalid buffer fragsize=%d fragments=%d\n",
2428                          params->buffer.fragment_size,
2429                          params->buffer.fragments);
2430
2431                 return -EINVAL;
2432         }
2433
2434         for (i = 0; i < wm_adsp_fw[dsp->fw].num_caps; i++) {
2435                 caps = &wm_adsp_fw[dsp->fw].caps[i];
2436                 desc = &caps->desc;
2437
2438                 if (caps->id != params->codec.id)
2439                         continue;
2440
2441                 if (stream->direction == SND_COMPRESS_PLAYBACK) {
2442                         if (desc->max_ch < params->codec.ch_out)
2443                                 continue;
2444                 } else {
2445                         if (desc->max_ch < params->codec.ch_in)
2446                                 continue;
2447                 }
2448
2449                 if (!(desc->formats & (1 << params->codec.format)))
2450                         continue;
2451
2452                 for (j = 0; j < desc->num_sample_rates; ++j)
2453                         if (desc->sample_rates[j] == params->codec.sample_rate)
2454                                 return 0;
2455         }
2456
2457         adsp_err(dsp, "Invalid params id=%u ch=%u,%u rate=%u fmt=%u\n",
2458                  params->codec.id, params->codec.ch_in, params->codec.ch_out,
2459                  params->codec.sample_rate, params->codec.format);
2460         return -EINVAL;
2461 }
2462
2463 static inline unsigned int wm_adsp_compr_frag_words(struct wm_adsp_compr *compr)
2464 {
2465         return compr->size.fragment_size / WM_ADSP_DATA_WORD_SIZE;
2466 }
2467
2468 int wm_adsp_compr_set_params(struct snd_compr_stream *stream,
2469                              struct snd_compr_params *params)
2470 {
2471         struct wm_adsp_compr *compr = stream->runtime->private_data;
2472         unsigned int size;
2473         int ret;
2474
2475         ret = wm_adsp_compr_check_params(stream, params);
2476         if (ret)
2477                 return ret;
2478
2479         compr->size = params->buffer;
2480
2481         adsp_dbg(compr->dsp, "fragment_size=%d fragments=%d\n",
2482                  compr->size.fragment_size, compr->size.fragments);
2483
2484         size = wm_adsp_compr_frag_words(compr) * sizeof(*compr->raw_buf);
2485         compr->raw_buf = kmalloc(size, GFP_DMA | GFP_KERNEL);
2486         if (!compr->raw_buf)
2487                 return -ENOMEM;
2488
2489         compr->sample_rate = params->codec.sample_rate;
2490
2491         return 0;
2492 }
2493 EXPORT_SYMBOL_GPL(wm_adsp_compr_set_params);
2494
2495 int wm_adsp_compr_get_caps(struct snd_compr_stream *stream,
2496                            struct snd_compr_caps *caps)
2497 {
2498         struct wm_adsp_compr *compr = stream->runtime->private_data;
2499         int fw = compr->dsp->fw;
2500         int i;
2501
2502         if (wm_adsp_fw[fw].caps) {
2503                 for (i = 0; i < wm_adsp_fw[fw].num_caps; i++)
2504                         caps->codecs[i] = wm_adsp_fw[fw].caps[i].id;
2505
2506                 caps->num_codecs = i;
2507                 caps->direction = wm_adsp_fw[fw].compr_direction;
2508
2509                 caps->min_fragment_size = WM_ADSP_MIN_FRAGMENT_SIZE;
2510                 caps->max_fragment_size = WM_ADSP_MAX_FRAGMENT_SIZE;
2511                 caps->min_fragments = WM_ADSP_MIN_FRAGMENTS;
2512                 caps->max_fragments = WM_ADSP_MAX_FRAGMENTS;
2513         }
2514
2515         return 0;
2516 }
2517 EXPORT_SYMBOL_GPL(wm_adsp_compr_get_caps);
2518
2519 static int wm_adsp_read_data_block(struct wm_adsp *dsp, int mem_type,
2520                                    unsigned int mem_addr,
2521                                    unsigned int num_words, u32 *data)
2522 {
2523         struct wm_adsp_region const *mem = wm_adsp_find_region(dsp, mem_type);
2524         unsigned int i, reg;
2525         int ret;
2526
2527         if (!mem)
2528                 return -EINVAL;
2529
2530         reg = wm_adsp_region_to_reg(mem, mem_addr);
2531
2532         ret = regmap_raw_read(dsp->regmap, reg, data,
2533                               sizeof(*data) * num_words);
2534         if (ret < 0)
2535                 return ret;
2536
2537         for (i = 0; i < num_words; ++i)
2538                 data[i] = be32_to_cpu(data[i]) & 0x00ffffffu;
2539
2540         return 0;
2541 }
2542
2543 static inline int wm_adsp_read_data_word(struct wm_adsp *dsp, int mem_type,
2544                                          unsigned int mem_addr, u32 *data)
2545 {
2546         return wm_adsp_read_data_block(dsp, mem_type, mem_addr, 1, data);
2547 }
2548
2549 static int wm_adsp_write_data_word(struct wm_adsp *dsp, int mem_type,
2550                                    unsigned int mem_addr, u32 data)
2551 {
2552         struct wm_adsp_region const *mem = wm_adsp_find_region(dsp, mem_type);
2553         unsigned int reg;
2554
2555         if (!mem)
2556                 return -EINVAL;
2557
2558         reg = wm_adsp_region_to_reg(mem, mem_addr);
2559
2560         data = cpu_to_be32(data & 0x00ffffffu);
2561
2562         return regmap_raw_write(dsp->regmap, reg, &data, sizeof(data));
2563 }
2564
2565 static inline int wm_adsp_buffer_read(struct wm_adsp_compr_buf *buf,
2566                                       unsigned int field_offset, u32 *data)
2567 {
2568         return wm_adsp_read_data_word(buf->dsp, WMFW_ADSP2_XM,
2569                                       buf->host_buf_ptr + field_offset, data);
2570 }
2571
2572 static inline int wm_adsp_buffer_write(struct wm_adsp_compr_buf *buf,
2573                                        unsigned int field_offset, u32 data)
2574 {
2575         return wm_adsp_write_data_word(buf->dsp, WMFW_ADSP2_XM,
2576                                        buf->host_buf_ptr + field_offset, data);
2577 }
2578
2579 static int wm_adsp_buffer_locate(struct wm_adsp_compr_buf *buf)
2580 {
2581         struct wm_adsp_alg_region *alg_region;
2582         struct wm_adsp *dsp = buf->dsp;
2583         u32 xmalg, addr, magic;
2584         int i, ret;
2585
2586         alg_region = wm_adsp_find_alg_region(dsp, WMFW_ADSP2_XM, dsp->fw_id);
2587         xmalg = sizeof(struct wm_adsp_system_config_xm_hdr) / sizeof(__be32);
2588
2589         addr = alg_region->base + xmalg + ALG_XM_FIELD(magic);
2590         ret = wm_adsp_read_data_word(dsp, WMFW_ADSP2_XM, addr, &magic);
2591         if (ret < 0)
2592                 return ret;
2593
2594         if (magic != WM_ADSP_ALG_XM_STRUCT_MAGIC)
2595                 return -EINVAL;
2596
2597         addr = alg_region->base + xmalg + ALG_XM_FIELD(host_buf_ptr);
2598         for (i = 0; i < 5; ++i) {
2599                 ret = wm_adsp_read_data_word(dsp, WMFW_ADSP2_XM, addr,
2600                                              &buf->host_buf_ptr);
2601                 if (ret < 0)
2602                         return ret;
2603
2604                 if (buf->host_buf_ptr)
2605                         break;
2606
2607                 usleep_range(1000, 2000);
2608         }
2609
2610         if (!buf->host_buf_ptr)
2611                 return -EIO;
2612
2613         adsp_dbg(dsp, "host_buf_ptr=%x\n", buf->host_buf_ptr);
2614
2615         return 0;
2616 }
2617
2618 static int wm_adsp_buffer_populate(struct wm_adsp_compr_buf *buf)
2619 {
2620         const struct wm_adsp_fw_caps *caps = wm_adsp_fw[buf->dsp->fw].caps;
2621         struct wm_adsp_buffer_region *region;
2622         u32 offset = 0;
2623         int i, ret;
2624
2625         for (i = 0; i < caps->num_regions; ++i) {
2626                 region = &buf->regions[i];
2627
2628                 region->offset = offset;
2629                 region->mem_type = caps->region_defs[i].mem_type;
2630
2631                 ret = wm_adsp_buffer_read(buf, caps->region_defs[i].base_offset,
2632                                           &region->base_addr);
2633                 if (ret < 0)
2634                         return ret;
2635
2636                 ret = wm_adsp_buffer_read(buf, caps->region_defs[i].size_offset,
2637                                           &offset);
2638                 if (ret < 0)
2639                         return ret;
2640
2641                 region->cumulative_size = offset;
2642
2643                 adsp_dbg(buf->dsp,
2644                          "region=%d type=%d base=%04x off=%04x size=%04x\n",
2645                          i, region->mem_type, region->base_addr,
2646                          region->offset, region->cumulative_size);
2647         }
2648
2649         return 0;
2650 }
2651
2652 static int wm_adsp_buffer_init(struct wm_adsp *dsp)
2653 {
2654         struct wm_adsp_compr_buf *buf;
2655         int ret;
2656
2657         buf = kzalloc(sizeof(*buf), GFP_KERNEL);
2658         if (!buf)
2659                 return -ENOMEM;
2660
2661         buf->dsp = dsp;
2662         buf->read_index = -1;
2663         buf->irq_count = 0xFFFFFFFF;
2664
2665         ret = wm_adsp_buffer_locate(buf);
2666         if (ret < 0) {
2667                 adsp_err(dsp, "Failed to acquire host buffer: %d\n", ret);
2668                 goto err_buffer;
2669         }
2670
2671         buf->regions = kcalloc(wm_adsp_fw[dsp->fw].caps->num_regions,
2672                                sizeof(*buf->regions), GFP_KERNEL);
2673         if (!buf->regions) {
2674                 ret = -ENOMEM;
2675                 goto err_buffer;
2676         }
2677
2678         ret = wm_adsp_buffer_populate(buf);
2679         if (ret < 0) {
2680                 adsp_err(dsp, "Failed to populate host buffer: %d\n", ret);
2681                 goto err_regions;
2682         }
2683
2684         dsp->buffer = buf;
2685
2686         return 0;
2687
2688 err_regions:
2689         kfree(buf->regions);
2690 err_buffer:
2691         kfree(buf);
2692         return ret;
2693 }
2694
2695 static int wm_adsp_buffer_free(struct wm_adsp *dsp)
2696 {
2697         if (dsp->buffer) {
2698                 kfree(dsp->buffer->regions);
2699                 kfree(dsp->buffer);
2700
2701                 dsp->buffer = NULL;
2702         }
2703
2704         return 0;
2705 }
2706
2707 static inline int wm_adsp_compr_attached(struct wm_adsp_compr *compr)
2708 {
2709         return compr->buf != NULL;
2710 }
2711
2712 static int wm_adsp_compr_attach(struct wm_adsp_compr *compr)
2713 {
2714         /*
2715          * Note this will be more complex once each DSP can support multiple
2716          * streams
2717          */
2718         if (!compr->dsp->buffer)
2719                 return -EINVAL;
2720
2721         compr->buf = compr->dsp->buffer;
2722
2723         return 0;
2724 }
2725
2726 int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd)
2727 {
2728         struct wm_adsp_compr *compr = stream->runtime->private_data;
2729         struct wm_adsp *dsp = compr->dsp;
2730         int ret = 0;
2731
2732         adsp_dbg(dsp, "Trigger: %d\n", cmd);
2733
2734         mutex_lock(&dsp->pwr_lock);
2735
2736         switch (cmd) {
2737         case SNDRV_PCM_TRIGGER_START:
2738                 if (wm_adsp_compr_attached(compr))
2739                         break;
2740
2741                 ret = wm_adsp_compr_attach(compr);
2742                 if (ret < 0) {
2743                         adsp_err(dsp, "Failed to link buffer and stream: %d\n",
2744                                  ret);
2745                         break;
2746                 }
2747
2748                 /* Trigger the IRQ at one fragment of data */
2749                 ret = wm_adsp_buffer_write(compr->buf,
2750                                            HOST_BUFFER_FIELD(high_water_mark),
2751                                            wm_adsp_compr_frag_words(compr));
2752                 if (ret < 0) {
2753                         adsp_err(dsp, "Failed to set high water mark: %d\n",
2754                                  ret);
2755                         break;
2756                 }
2757                 break;
2758         case SNDRV_PCM_TRIGGER_STOP:
2759                 break;
2760         default:
2761                 ret = -EINVAL;
2762                 break;
2763         }
2764
2765         mutex_unlock(&dsp->pwr_lock);
2766
2767         return ret;
2768 }
2769 EXPORT_SYMBOL_GPL(wm_adsp_compr_trigger);
2770
2771 static inline int wm_adsp_buffer_size(struct wm_adsp_compr_buf *buf)
2772 {
2773         int last_region = wm_adsp_fw[buf->dsp->fw].caps->num_regions - 1;
2774
2775         return buf->regions[last_region].cumulative_size;
2776 }
2777
2778 static int wm_adsp_buffer_update_avail(struct wm_adsp_compr_buf *buf)
2779 {
2780         u32 next_read_index, next_write_index;
2781         int write_index, read_index, avail;
2782         int ret;
2783
2784         /* Only sync read index if we haven't already read a valid index */
2785         if (buf->read_index < 0) {
2786                 ret = wm_adsp_buffer_read(buf,
2787                                 HOST_BUFFER_FIELD(next_read_index),
2788                                 &next_read_index);
2789                 if (ret < 0)
2790                         return ret;
2791
2792                 read_index = sign_extend32(next_read_index, 23);
2793
2794                 if (read_index < 0) {
2795                         adsp_dbg(buf->dsp, "Avail check on unstarted stream\n");
2796                         return 0;
2797                 }
2798
2799                 buf->read_index = read_index;
2800         }
2801
2802         ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(next_write_index),
2803                         &next_write_index);
2804         if (ret < 0)
2805                 return ret;
2806
2807         write_index = sign_extend32(next_write_index, 23);
2808
2809         avail = write_index - buf->read_index;
2810         if (avail < 0)
2811                 avail += wm_adsp_buffer_size(buf);
2812
2813         adsp_dbg(buf->dsp, "readindex=0x%x, writeindex=0x%x, avail=%d\n",
2814                  buf->read_index, write_index, avail);
2815
2816         buf->avail = avail;
2817
2818         return 0;
2819 }
2820
2821 int wm_adsp_compr_handle_irq(struct wm_adsp *dsp)
2822 {
2823         struct wm_adsp_compr_buf *buf = dsp->buffer;
2824         struct wm_adsp_compr *compr = dsp->compr;
2825         int ret = 0;
2826
2827         mutex_lock(&dsp->pwr_lock);
2828
2829         if (!buf) {
2830                 ret = -ENODEV;
2831                 goto out;
2832         }
2833
2834         adsp_dbg(dsp, "Handling buffer IRQ\n");
2835
2836         ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(error), &buf->error);
2837         if (ret < 0) {
2838                 adsp_err(dsp, "Failed to check buffer error: %d\n", ret);
2839                 goto out;
2840         }
2841         if (buf->error != 0) {
2842                 adsp_err(dsp, "Buffer error occurred: %d\n", buf->error);
2843                 ret = -EIO;
2844                 goto out;
2845         }
2846
2847         ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(irq_count),
2848                                   &buf->irq_count);
2849         if (ret < 0) {
2850                 adsp_err(dsp, "Failed to get irq_count: %d\n", ret);
2851                 goto out;
2852         }
2853
2854         ret = wm_adsp_buffer_update_avail(buf);
2855         if (ret < 0) {
2856                 adsp_err(dsp, "Error reading avail: %d\n", ret);
2857                 goto out;
2858         }
2859
2860         if (compr->stream)
2861                 snd_compr_fragment_elapsed(compr->stream);
2862
2863 out:
2864         mutex_unlock(&dsp->pwr_lock);
2865
2866         return ret;
2867 }
2868 EXPORT_SYMBOL_GPL(wm_adsp_compr_handle_irq);
2869
2870 static int wm_adsp_buffer_reenable_irq(struct wm_adsp_compr_buf *buf)
2871 {
2872         if (buf->irq_count & 0x01)
2873                 return 0;
2874
2875         adsp_dbg(buf->dsp, "Enable IRQ(0x%x) for next fragment\n",
2876                  buf->irq_count);
2877
2878         buf->irq_count |= 0x01;
2879
2880         return wm_adsp_buffer_write(buf, HOST_BUFFER_FIELD(irq_ack),
2881                                     buf->irq_count);
2882 }
2883
2884 int wm_adsp_compr_pointer(struct snd_compr_stream *stream,
2885                           struct snd_compr_tstamp *tstamp)
2886 {
2887         struct wm_adsp_compr *compr = stream->runtime->private_data;
2888         struct wm_adsp_compr_buf *buf = compr->buf;
2889         struct wm_adsp *dsp = compr->dsp;
2890         int ret = 0;
2891
2892         adsp_dbg(dsp, "Pointer request\n");
2893
2894         mutex_lock(&dsp->pwr_lock);
2895
2896         if (!compr->buf) {
2897                 ret = -ENXIO;
2898                 goto out;
2899         }
2900
2901         if (compr->buf->error) {
2902                 ret = -EIO;
2903                 goto out;
2904         }
2905
2906         if (buf->avail < wm_adsp_compr_frag_words(compr)) {
2907                 ret = wm_adsp_buffer_update_avail(buf);
2908                 if (ret < 0) {
2909                         adsp_err(dsp, "Error reading avail: %d\n", ret);
2910                         goto out;
2911                 }
2912
2913                 /*
2914                  * If we really have less than 1 fragment available tell the
2915                  * DSP to inform us once a whole fragment is available.
2916                  */
2917                 if (buf->avail < wm_adsp_compr_frag_words(compr)) {
2918                         ret = wm_adsp_buffer_reenable_irq(buf);
2919                         if (ret < 0) {
2920                                 adsp_err(dsp,
2921                                          "Failed to re-enable buffer IRQ: %d\n",
2922                                          ret);
2923                                 goto out;
2924                         }
2925                 }
2926         }
2927
2928         tstamp->copied_total = compr->copied_total;
2929         tstamp->copied_total += buf->avail * WM_ADSP_DATA_WORD_SIZE;
2930         tstamp->sampling_rate = compr->sample_rate;
2931
2932 out:
2933         mutex_unlock(&dsp->pwr_lock);
2934
2935         return ret;
2936 }
2937 EXPORT_SYMBOL_GPL(wm_adsp_compr_pointer);
2938
2939 static int wm_adsp_buffer_capture_block(struct wm_adsp_compr *compr, int target)
2940 {
2941         struct wm_adsp_compr_buf *buf = compr->buf;
2942         u8 *pack_in = (u8 *)compr->raw_buf;
2943         u8 *pack_out = (u8 *)compr->raw_buf;
2944         unsigned int adsp_addr;
2945         int mem_type, nwords, max_read;
2946         int i, j, ret;
2947
2948         /* Calculate read parameters */
2949         for (i = 0; i < wm_adsp_fw[buf->dsp->fw].caps->num_regions; ++i)
2950                 if (buf->read_index < buf->regions[i].cumulative_size)
2951                         break;
2952
2953         if (i == wm_adsp_fw[buf->dsp->fw].caps->num_regions)
2954                 return -EINVAL;
2955
2956         mem_type = buf->regions[i].mem_type;
2957         adsp_addr = buf->regions[i].base_addr +
2958                     (buf->read_index - buf->regions[i].offset);
2959
2960         max_read = wm_adsp_compr_frag_words(compr);
2961         nwords = buf->regions[i].cumulative_size - buf->read_index;
2962
2963         if (nwords > target)
2964                 nwords = target;
2965         if (nwords > buf->avail)
2966                 nwords = buf->avail;
2967         if (nwords > max_read)
2968                 nwords = max_read;
2969         if (!nwords)
2970                 return 0;
2971
2972         /* Read data from DSP */
2973         ret = wm_adsp_read_data_block(buf->dsp, mem_type, adsp_addr,
2974                                       nwords, compr->raw_buf);
2975         if (ret < 0)
2976                 return ret;
2977
2978         /* Remove the padding bytes from the data read from the DSP */
2979         for (i = 0; i < nwords; i++) {
2980                 for (j = 0; j < WM_ADSP_DATA_WORD_SIZE; j++)
2981                         *pack_out++ = *pack_in++;
2982
2983                 pack_in += sizeof(*(compr->raw_buf)) - WM_ADSP_DATA_WORD_SIZE;
2984         }
2985
2986         /* update read index to account for words read */
2987         buf->read_index += nwords;
2988         if (buf->read_index == wm_adsp_buffer_size(buf))
2989                 buf->read_index = 0;
2990
2991         ret = wm_adsp_buffer_write(buf, HOST_BUFFER_FIELD(next_read_index),
2992                                    buf->read_index);
2993         if (ret < 0)
2994                 return ret;
2995
2996         /* update avail to account for words read */
2997         buf->avail -= nwords;
2998
2999         return nwords;
3000 }
3001
3002 static int wm_adsp_compr_read(struct wm_adsp_compr *compr,
3003                               char __user *buf, size_t count)
3004 {
3005         struct wm_adsp *dsp = compr->dsp;
3006         int ntotal = 0;
3007         int nwords, nbytes;
3008
3009         adsp_dbg(dsp, "Requested read of %zu bytes\n", count);
3010
3011         if (!compr->buf)
3012                 return -ENXIO;
3013
3014         if (compr->buf->error)
3015                 return -EIO;
3016
3017         count /= WM_ADSP_DATA_WORD_SIZE;
3018
3019         do {
3020                 nwords = wm_adsp_buffer_capture_block(compr, count);
3021                 if (nwords < 0) {
3022                         adsp_err(dsp, "Failed to capture block: %d\n", nwords);
3023                         return nwords;
3024                 }
3025
3026                 nbytes = nwords * WM_ADSP_DATA_WORD_SIZE;
3027
3028                 adsp_dbg(dsp, "Read %d bytes\n", nbytes);
3029
3030                 if (copy_to_user(buf + ntotal, compr->raw_buf, nbytes)) {
3031                         adsp_err(dsp, "Failed to copy data to user: %d, %d\n",
3032                                  ntotal, nbytes);
3033                         return -EFAULT;
3034                 }
3035
3036                 count -= nwords;
3037                 ntotal += nbytes;
3038         } while (nwords > 0 && count > 0);
3039
3040         compr->copied_total += ntotal;
3041
3042         return ntotal;
3043 }
3044
3045 int wm_adsp_compr_copy(struct snd_compr_stream *stream, char __user *buf,
3046                        size_t count)
3047 {
3048         struct wm_adsp_compr *compr = stream->runtime->private_data;
3049         struct wm_adsp *dsp = compr->dsp;
3050         int ret;
3051
3052         mutex_lock(&dsp->pwr_lock);
3053
3054         if (stream->direction == SND_COMPRESS_CAPTURE)
3055                 ret = wm_adsp_compr_read(compr, buf, count);
3056         else
3057                 ret = -ENOTSUPP;
3058
3059         mutex_unlock(&dsp->pwr_lock);
3060
3061         return ret;
3062 }
3063 EXPORT_SYMBOL_GPL(wm_adsp_compr_copy);
3064
3065 MODULE_LICENSE("GPL v2");