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.enumerated.item[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.enumerated.item[0] == dsp[e->shift_l].fw)
 625                 return 0;
 626
 627         if (ucontrol->value.enumerated.item[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.enumerated.item[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, len, GFP_KERNEL | GFP_DMA);
 745         if (!scratch)
 746                 return -ENOMEM;
 747
 748         ret = regmap_raw_write(dsp->regmap, reg, scratch,
 749                                len);
 750         if (ret) {
 751                 adsp_err(dsp, "Failed to write %zu bytes to %x: %d\n",
 752                          len, reg, ret);
 753                 kfree(scratch);
 754                 return ret;
 755         }
 756         adsp_dbg(dsp, "Wrote %zu bytes to %x\n", 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(len, GFP_KERNEL | GFP_DMA);
 804         if (!scratch)
 805                 return -ENOMEM;
 806
 807         ret = regmap_raw_read(dsp->regmap, reg, scratch, len);
 808         if (ret) {
 809                 adsp_err(dsp, "Failed to read %zu bytes from %x: %d\n",
 810                          len, reg, ret);
 811                 kfree(scratch);
 812                 return ret;
 813         }
 814         adsp_dbg(dsp, "Read %zu bytes from %x\n", len, reg);
 815
 816         memcpy(buf, scratch, 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         } else {
 881                 kcontrol->access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
 882                 kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_VOLATILE;
 883         }
 884
 885         ret = snd_soc_add_card_controls(dsp->card, kcontrol, 1);
 886         if (ret < 0)
 887                 goto err_kcontrol;
 888
 889         kfree(kcontrol);
 890
 891         ctl->kcontrol = snd_soc_card_get_kcontrol(dsp->card, ctl->name);
 892
 893         return 0;
 894
 895 err_kcontrol:
 896         kfree(kcontrol);
 897         return ret;
 898 }
 899
 900 static int wm_coeff_init_control_caches(struct wm_adsp *dsp)
 901 {
 902         struct wm_coeff_ctl *ctl;
 903         int ret;
 904
 905         list_for_each_entry(ctl, &dsp->ctl_list, list) {
 906                 if (!ctl->enabled || ctl->set)
 907                         continue;
 908                 if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
 909                         continue;
 910
 911                 ret = wm_coeff_read_control(ctl, ctl->cache, ctl->len);
 912                 if (ret < 0)
 913                         return ret;
 914         }
 915
 916         return 0;
 917 }
 918
 919 static int wm_coeff_sync_controls(struct wm_adsp *dsp)
 920 {
 921         struct wm_coeff_ctl *ctl;
 922         int ret;
 923
 924         list_for_each_entry(ctl, &dsp->ctl_list, list) {
 925                 if (!ctl->enabled)
 926                         continue;
 927                 if (ctl->set && !(ctl->flags & WMFW_CTL_FLAG_VOLATILE)) {
 928                         ret = wm_coeff_write_control(ctl, ctl->cache, ctl->len);
 929                         if (ret < 0)
 930                                 return ret;
 931                 }
 932         }
 933
 934         return 0;
 935 }
 936
 937 static void wm_adsp_ctl_work(struct work_struct *work)
 938 {
 939         struct wmfw_ctl_work *ctl_work = container_of(work,
 940                                                       struct wmfw_ctl_work,
 941                                                       work);
 942
 943         wmfw_add_ctl(ctl_work->dsp, ctl_work->ctl);
 944         kfree(ctl_work);
 945 }
 946
 947 static int wm_adsp_create_control(struct wm_adsp *dsp,
 948                                   const struct wm_adsp_alg_region *alg_region,
 949                                   unsigned int offset, unsigned int len,
 950                                   const char *subname, unsigned int subname_len,
 951                                   unsigned int flags)
 952 {
 953         struct wm_coeff_ctl *ctl;
 954         struct wmfw_ctl_work *ctl_work;
 955         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 956         char *region_name;
 957         int ret;
 958
 959         if (flags & WMFW_CTL_FLAG_SYS)
 960                 return 0;
 961
 962         switch (alg_region->type) {
 963         case WMFW_ADSP1_PM:
 964                 region_name = "PM";
 965                 break;
 966         case WMFW_ADSP1_DM:
 967                 region_name = "DM";
 968                 break;
 969         case WMFW_ADSP2_XM:
 970                 region_name = "XM";
 971                 break;
 972         case WMFW_ADSP2_YM:
 973                 region_name = "YM";
 974                 break;
 975         case WMFW_ADSP1_ZM:
 976                 region_name = "ZM";
 977                 break;
 978         default:
 979                 adsp_err(dsp, "Unknown region type: %d\n", alg_region->type);
 980                 return -EINVAL;
 981         }
 982
 983         switch (dsp->fw_ver) {
 984         case 0:
 985         case 1:
 986                 snprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "DSP%d %s %x",
 987                          dsp->num, region_name, alg_region->alg);
 988                 break;
 989         default:
 990                 ret = snprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN,
 991                                 "DSP%d%c %.12s %x", dsp->num, *region_name,
 992                                 wm_adsp_fw_text[dsp->fw], alg_region->alg);
 993
 994                 /* Truncate the subname from the start if it is too long */
 995                 if (subname) {
 996                         int avail = SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret - 2;
 997                         int skip = 0;
 998
 999                         if (subname_len > avail)
1000                                 skip = subname_len - avail;
1001
1002                         snprintf(name + ret,
1003                                  SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret, " %.*s",
1004                                  subname_len - skip, subname + skip);
1005                 }
1006                 break;
1007         }
1008
1009         list_for_each_entry(ctl, &dsp->ctl_list, list) {
1010                 if (!strcmp(ctl->name, name)) {
1011                         if (!ctl->enabled)
1012                                 ctl->enabled = 1;
1013                         return 0;
1014                 }
1015         }
1016
1017         ctl = kzalloc(sizeof(*ctl), GFP_KERNEL);
1018         if (!ctl)
1019                 return -ENOMEM;
1020         ctl->fw_name = wm_adsp_fw_text[dsp->fw];
1021         ctl->alg_region = *alg_region;
1022         ctl->name = kmemdup(name, strlen(name) + 1, GFP_KERNEL);
1023         if (!ctl->name) {
1024                 ret = -ENOMEM;
1025                 goto err_ctl;
1026         }
1027         ctl->enabled = 1;
1028         ctl->set = 0;
1029         ctl->ops.xget = wm_coeff_get;
1030         ctl->ops.xput = wm_coeff_put;
1031         ctl->dsp = dsp;
1032
1033         ctl->flags = flags;
1034         ctl->offset = offset;
1035         if (len > 512) {
1036                 adsp_warn(dsp, "Truncating control %s from %d\n",
1037                           ctl->name, len);
1038                 len = 512;
1039         }
1040         ctl->len = len;
1041         ctl->cache = kzalloc(ctl->len, GFP_KERNEL);
1042         if (!ctl->cache) {
1043                 ret = -ENOMEM;
1044                 goto err_ctl_name;
1045         }
1046
1047         list_add(&ctl->list, &dsp->ctl_list);
1048
1049         ctl_work = kzalloc(sizeof(*ctl_work), GFP_KERNEL);
1050         if (!ctl_work) {
1051                 ret = -ENOMEM;
1052                 goto err_ctl_cache;
1053         }
1054
1055         ctl_work->dsp = dsp;
1056         ctl_work->ctl = ctl;
1057         INIT_WORK(&ctl_work->work, wm_adsp_ctl_work);
1058         schedule_work(&ctl_work->work);
1059
1060         return 0;
1061
1062 err_ctl_cache:
1063         kfree(ctl->cache);
1064 err_ctl_name:
1065         kfree(ctl->name);
1066 err_ctl:
1067         kfree(ctl);
1068
1069         return ret;
1070 }
1071
1072 struct wm_coeff_parsed_alg {
1073         int id;
1074         const u8 *name;
1075         int name_len;
1076         int ncoeff;
1077 };
1078
1079 struct wm_coeff_parsed_coeff {
1080         int offset;
1081         int mem_type;
1082         const u8 *name;
1083         int name_len;
1084         int ctl_type;
1085         int flags;
1086         int len;
1087 };
1088
1089 static int wm_coeff_parse_string(int bytes, const u8 **pos, const u8 **str)
1090 {
1091         int length;
1092
1093         switch (bytes) {
1094         case 1:
1095                 length = **pos;
1096                 break;
1097         case 2:
1098                 length = le16_to_cpu(*((__le16 *)*pos));
1099                 break;
1100         default:
1101                 return 0;
1102         }
1103
1104         if (str)
1105                 *str = *pos + bytes;
1106
1107         *pos += ((length + bytes) + 3) & ~0x03;
1108
1109         return length;
1110 }
1111
1112 static int wm_coeff_parse_int(int bytes, const u8 **pos)
1113 {
1114         int val = 0;
1115
1116         switch (bytes) {
1117         case 2:
1118                 val = le16_to_cpu(*((__le16 *)*pos));
1119                 break;
1120         case 4:
1121                 val = le32_to_cpu(*((__le32 *)*pos));
1122                 break;
1123         default:
1124                 break;
1125         }
1126
1127         *pos += bytes;
1128
1129         return val;
1130 }
1131
1132 static inline void wm_coeff_parse_alg(struct wm_adsp *dsp, const u8 **data,
1133                                       struct wm_coeff_parsed_alg *blk)
1134 {
1135         const struct wmfw_adsp_alg_data *raw;
1136
1137         switch (dsp->fw_ver) {
1138         case 0:
1139         case 1:
1140                 raw = (const struct wmfw_adsp_alg_data *)*data;
1141                 *data = raw->data;
1142
1143                 blk->id = le32_to_cpu(raw->id);
1144                 blk->name = raw->name;
1145                 blk->name_len = strlen(raw->name);
1146                 blk->ncoeff = le32_to_cpu(raw->ncoeff);
1147                 break;
1148         default:
1149                 blk->id = wm_coeff_parse_int(sizeof(raw->id), data);
1150                 blk->name_len = wm_coeff_parse_string(sizeof(u8), data,
1151                                                       &blk->name);
1152                 wm_coeff_parse_string(sizeof(u16), data, NULL);
1153                 blk->ncoeff = wm_coeff_parse_int(sizeof(raw->ncoeff), data);
1154                 break;
1155         }
1156
1157         adsp_dbg(dsp, "Algorithm ID: %#x\n", blk->id);
1158         adsp_dbg(dsp, "Algorithm name: %.*s\n", blk->name_len, blk->name);
1159         adsp_dbg(dsp, "# of coefficient descriptors: %#x\n", blk->ncoeff);
1160 }
1161
1162 static inline void wm_coeff_parse_coeff(struct wm_adsp *dsp, const u8 **data,
1163                                         struct wm_coeff_parsed_coeff *blk)
1164 {
1165         const struct wmfw_adsp_coeff_data *raw;
1166         const u8 *tmp;
1167         int length;
1168
1169         switch (dsp->fw_ver) {
1170         case 0:
1171         case 1:
1172                 raw = (const struct wmfw_adsp_coeff_data *)*data;
1173                 *data = *data + sizeof(raw->hdr) + le32_to_cpu(raw->hdr.size);
1174
1175                 blk->offset = le16_to_cpu(raw->hdr.offset);
1176                 blk->mem_type = le16_to_cpu(raw->hdr.type);
1177                 blk->name = raw->name;
1178                 blk->name_len = strlen(raw->name);
1179                 blk->ctl_type = le16_to_cpu(raw->ctl_type);
1180                 blk->flags = le16_to_cpu(raw->flags);
1181                 blk->len = le32_to_cpu(raw->len);
1182                 break;
1183         default:
1184                 tmp = *data;
1185                 blk->offset = wm_coeff_parse_int(sizeof(raw->hdr.offset), &tmp);
1186                 blk->mem_type = wm_coeff_parse_int(sizeof(raw->hdr.type), &tmp);
1187                 length = wm_coeff_parse_int(sizeof(raw->hdr.size), &tmp);
1188                 blk->name_len = wm_coeff_parse_string(sizeof(u8), &tmp,
1189                                                       &blk->name);
1190                 wm_coeff_parse_string(sizeof(u8), &tmp, NULL);
1191                 wm_coeff_parse_string(sizeof(u16), &tmp, NULL);
1192                 blk->ctl_type = wm_coeff_parse_int(sizeof(raw->ctl_type), &tmp);
1193                 blk->flags = wm_coeff_parse_int(sizeof(raw->flags), &tmp);
1194                 blk->len = wm_coeff_parse_int(sizeof(raw->len), &tmp);
1195
1196                 *data = *data + sizeof(raw->hdr) + length;
1197                 break;
1198         }
1199
1200         adsp_dbg(dsp, "\tCoefficient type: %#x\n", blk->mem_type);
1201         adsp_dbg(dsp, "\tCoefficient offset: %#x\n", blk->offset);
1202         adsp_dbg(dsp, "\tCoefficient name: %.*s\n", blk->name_len, blk->name);
1203         adsp_dbg(dsp, "\tCoefficient flags: %#x\n", blk->flags);
1204         adsp_dbg(dsp, "\tALSA control type: %#x\n", blk->ctl_type);
1205         adsp_dbg(dsp, "\tALSA control len: %#x\n", blk->len);
1206 }
1207
1208 static int wm_adsp_parse_coeff(struct wm_adsp *dsp,
1209                                const struct wmfw_region *region)
1210 {
1211         struct wm_adsp_alg_region alg_region = {};
1212         struct wm_coeff_parsed_alg alg_blk;
1213         struct wm_coeff_parsed_coeff coeff_blk;
1214         const u8 *data = region->data;
1215         int i, ret;
1216
1217         wm_coeff_parse_alg(dsp, &data, &alg_blk);
1218         for (i = 0; i < alg_blk.ncoeff; i++) {
1219                 wm_coeff_parse_coeff(dsp, &data, &coeff_blk);
1220
1221                 switch (coeff_blk.ctl_type) {
1222                 case SNDRV_CTL_ELEM_TYPE_BYTES:
1223                         break;
1224                 default:
1225                         adsp_err(dsp, "Unknown control type: %d\n",
1226                                  coeff_blk.ctl_type);
1227                         return -EINVAL;
1228                 }
1229
1230                 alg_region.type = coeff_blk.mem_type;
1231                 alg_region.alg = alg_blk.id;
1232
1233                 ret = wm_adsp_create_control(dsp, &alg_region,
1234                                              coeff_blk.offset,
1235                                              coeff_blk.len,
1236                                              coeff_blk.name,
1237                                              coeff_blk.name_len,
1238                                              coeff_blk.flags);
1239                 if (ret < 0)
1240                         adsp_err(dsp, "Failed to create control: %.*s, %d\n",
1241                                  coeff_blk.name_len, coeff_blk.name, ret);
1242         }
1243
1244         return 0;
1245 }
1246
1247 static int wm_adsp_load(struct wm_adsp *dsp)
1248 {
1249         LIST_HEAD(buf_list);
1250         const struct firmware *firmware;
1251         struct regmap *regmap = dsp->regmap;
1252         unsigned int pos = 0;
1253         const struct wmfw_header *header;
1254         const struct wmfw_adsp1_sizes *adsp1_sizes;
1255         const struct wmfw_adsp2_sizes *adsp2_sizes;
1256         const struct wmfw_footer *footer;
1257         const struct wmfw_region *region;
1258         const struct wm_adsp_region *mem;
1259         const char *region_name;
1260         char *file, *text;
1261         struct wm_adsp_buf *buf;
1262         unsigned int reg;
1263         int regions = 0;
1264         int ret, offset, type, sizes;
1265
1266         file = kzalloc(PAGE_SIZE, GFP_KERNEL);
1267         if (file == NULL)
1268                 return -ENOMEM;
1269
1270         snprintf(file, PAGE_SIZE, "%s-dsp%d-%s.wmfw", dsp->part, dsp->num,
1271                  wm_adsp_fw[dsp->fw].file);
1272         file[PAGE_SIZE - 1] = '\0';
1273
1274         ret = request_firmware(&firmware, file, dsp->dev);
1275         if (ret != 0) {
1276                 adsp_err(dsp, "Failed to request '%s'\n", file);
1277                 goto out;
1278         }
1279         ret = -EINVAL;
1280
1281         pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);
1282         if (pos >= firmware->size) {
1283                 adsp_err(dsp, "%s: file too short, %zu bytes\n",
1284                          file, firmware->size);
1285                 goto out_fw;
1286         }
1287
1288         header = (void *)&firmware->data[0];
1289
1290         if (memcmp(&header->magic[0], "WMFW", 4) != 0) {
1291                 adsp_err(dsp, "%s: invalid magic\n", file);
1292                 goto out_fw;
1293         }
1294
1295         switch (header->ver) {
1296         case 0:
1297                 adsp_warn(dsp, "%s: Depreciated file format %d\n",
1298                           file, header->ver);
1299                 break;
1300         case 1:
1301         case 2:
1302                 break;
1303         default:
1304                 adsp_err(dsp, "%s: unknown file format %d\n",
1305                          file, header->ver);
1306                 goto out_fw;
1307         }
1308
1309         adsp_info(dsp, "Firmware version: %d\n", header->ver);
1310         dsp->fw_ver = header->ver;
1311
1312         if (header->core != dsp->type) {
1313                 adsp_err(dsp, "%s: invalid core %d != %d\n",
1314                          file, header->core, dsp->type);
1315                 goto out_fw;
1316         }
1317
1318         switch (dsp->type) {
1319         case WMFW_ADSP1:
1320                 pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);
1321                 adsp1_sizes = (void *)&(header[1]);
1322                 footer = (void *)&(adsp1_sizes[1]);
1323                 sizes = sizeof(*adsp1_sizes);
1324
1325                 adsp_dbg(dsp, "%s: %d DM, %d PM, %d ZM\n",
1326                          file, le32_to_cpu(adsp1_sizes->dm),
1327                          le32_to_cpu(adsp1_sizes->pm),
1328                          le32_to_cpu(adsp1_sizes->zm));
1329                 break;
1330
1331         case WMFW_ADSP2:
1332                 pos = sizeof(*header) + sizeof(*adsp2_sizes) + sizeof(*footer);
1333                 adsp2_sizes = (void *)&(header[1]);
1334                 footer = (void *)&(adsp2_sizes[1]);
1335                 sizes = sizeof(*adsp2_sizes);
1336
1337                 adsp_dbg(dsp, "%s: %d XM, %d YM %d PM, %d ZM\n",
1338                          file, le32_to_cpu(adsp2_sizes->xm),
1339                          le32_to_cpu(adsp2_sizes->ym),
1340                          le32_to_cpu(adsp2_sizes->pm),
1341                          le32_to_cpu(adsp2_sizes->zm));
1342                 break;
1343
1344         default:
1345                 WARN(1, "Unknown DSP type");
1346                 goto out_fw;
1347         }
1348
1349         if (le32_to_cpu(header->len) != sizeof(*header) +
1350             sizes + sizeof(*footer)) {
1351                 adsp_err(dsp, "%s: unexpected header length %d\n",
1352                          file, le32_to_cpu(header->len));
1353                 goto out_fw;
1354         }
1355
1356         adsp_dbg(dsp, "%s: timestamp %llu\n", file,
1357                  le64_to_cpu(footer->timestamp));
1358
1359         while (pos < firmware->size &&
1360                pos - firmware->size > sizeof(*region)) {
1361                 region = (void *)&(firmware->data[pos]);
1362                 region_name = "Unknown";
1363                 reg = 0;
1364                 text = NULL;
1365                 offset = le32_to_cpu(region->offset) & 0xffffff;
1366                 type = be32_to_cpu(region->type) & 0xff;
1367                 mem = wm_adsp_find_region(dsp, type);
1368
1369                 switch (type) {
1370                 case WMFW_NAME_TEXT:
1371                         region_name = "Firmware name";
1372                         text = kzalloc(le32_to_cpu(region->len) + 1,
1373                                        GFP_KERNEL);
1374                         break;
1375                 case WMFW_ALGORITHM_DATA:
1376                         region_name = "Algorithm";
1377                         ret = wm_adsp_parse_coeff(dsp, region);
1378                         if (ret != 0)
1379                                 goto out_fw;
1380                         break;
1381                 case WMFW_INFO_TEXT:
1382                         region_name = "Information";
1383                         text = kzalloc(le32_to_cpu(region->len) + 1,
1384                                        GFP_KERNEL);
1385                         break;
1386                 case WMFW_ABSOLUTE:
1387                         region_name = "Absolute";
1388                         reg = offset;
1389                         break;
1390                 case WMFW_ADSP1_PM:
1391                         region_name = "PM";
1392                         reg = wm_adsp_region_to_reg(mem, offset);
1393                         break;
1394                 case WMFW_ADSP1_DM:
1395                         region_name = "DM";
1396                         reg = wm_adsp_region_to_reg(mem, offset);
1397                         break;
1398                 case WMFW_ADSP2_XM:
1399                         region_name = "XM";
1400                         reg = wm_adsp_region_to_reg(mem, offset);
1401                         break;
1402                 case WMFW_ADSP2_YM:
1403                         region_name = "YM";
1404                         reg = wm_adsp_region_to_reg(mem, offset);
1405                         break;
1406                 case WMFW_ADSP1_ZM:
1407                         region_name = "ZM";
1408                         reg = wm_adsp_region_to_reg(mem, offset);
1409                         break;
1410                 default:
1411                         adsp_warn(dsp,
1412                                   "%s.%d: Unknown region type %x at %d(%x)\n",
1413                                   file, regions, type, pos, pos);
1414                         break;
1415                 }
1416
1417                 adsp_dbg(dsp, "%s.%d: %d bytes at %d in %s\n", file,
1418                          regions, le32_to_cpu(region->len), offset,
1419                          region_name);
1420
1421                 if (text) {
1422                         memcpy(text, region->data, le32_to_cpu(region->len));
1423                         adsp_info(dsp, "%s: %s\n", file, text);
1424                         kfree(text);
1425                 }
1426
1427                 if (reg) {
1428                         buf = wm_adsp_buf_alloc(region->data,
1429                                                 le32_to_cpu(region->len),
1430                                                 &buf_list);
1431                         if (!buf) {
1432                                 adsp_err(dsp, "Out of memory\n");
1433                                 ret = -ENOMEM;
1434                                 goto out_fw;
1435                         }
1436
1437                         ret = regmap_raw_write_async(regmap, reg, buf->buf,
1438                                                      le32_to_cpu(region->len));
1439                         if (ret != 0) {
1440                                 adsp_err(dsp,
1441                                         "%s.%d: Failed to write %d bytes at %d in %s: %d\n",
1442                                         file, regions,
1443                                         le32_to_cpu(region->len), offset,
1444                                         region_name, ret);
1445                                 goto out_fw;
1446                         }
1447                 }
1448
1449                 pos += le32_to_cpu(region->len) + sizeof(*region);
1450                 regions++;
1451         }
1452
1453         ret = regmap_async_complete(regmap);
1454         if (ret != 0) {
1455                 adsp_err(dsp, "Failed to complete async write: %d\n", ret);
1456                 goto out_fw;
1457         }
1458
1459         if (pos > firmware->size)
1460                 adsp_warn(dsp, "%s.%d: %zu bytes at end of file\n",
1461                           file, regions, pos - firmware->size);
1462
1463         wm_adsp_debugfs_save_wmfwname(dsp, file);
1464
1465 out_fw:
1466         regmap_async_complete(regmap);
1467         wm_adsp_buf_free(&buf_list);
1468         release_firmware(firmware);
1469 out:
1470         kfree(file);
1471
1472         return ret;
1473 }
1474
1475 static void wm_adsp_ctl_fixup_base(struct wm_adsp *dsp,
1476                                   const struct wm_adsp_alg_region *alg_region)
1477 {
1478         struct wm_coeff_ctl *ctl;
1479
1480         list_for_each_entry(ctl, &dsp->ctl_list, list) {
1481                 if (ctl->fw_name == wm_adsp_fw_text[dsp->fw] &&
1482                     alg_region->alg == ctl->alg_region.alg &&
1483                     alg_region->type == ctl->alg_region.type) {
1484                         ctl->alg_region.base = alg_region->base;
1485                 }
1486         }
1487 }
1488
1489 static void *wm_adsp_read_algs(struct wm_adsp *dsp, size_t n_algs,
1490                                unsigned int pos, unsigned int len)
1491 {
1492         void *alg;
1493         int ret;
1494         __be32 val;
1495
1496         if (n_algs == 0) {
1497                 adsp_err(dsp, "No algorithms\n");
1498                 return ERR_PTR(-EINVAL);
1499         }
1500
1501         if (n_algs > 1024) {
1502                 adsp_err(dsp, "Algorithm count %zx excessive\n", n_algs);
1503                 return ERR_PTR(-EINVAL);
1504         }
1505
1506         /* Read the terminator first to validate the length */
1507         ret = regmap_raw_read(dsp->regmap, pos + len, &val, sizeof(val));
1508         if (ret != 0) {
1509                 adsp_err(dsp, "Failed to read algorithm list end: %d\n",
1510                         ret);
1511                 return ERR_PTR(ret);
1512         }
1513
1514         if (be32_to_cpu(val) != 0xbedead)
1515                 adsp_warn(dsp, "Algorithm list end %x 0x%x != 0xbeadead\n",
1516                           pos + len, be32_to_cpu(val));
1517
1518         alg = kzalloc(len * 2, GFP_KERNEL | GFP_DMA);
1519         if (!alg)
1520                 return ERR_PTR(-ENOMEM);
1521
1522         ret = regmap_raw_read(dsp->regmap, pos, alg, len * 2);
1523         if (ret != 0) {
1524                 adsp_err(dsp, "Failed to read algorithm list: %d\n", ret);
1525                 kfree(alg);
1526                 return ERR_PTR(ret);
1527         }
1528
1529         return alg;
1530 }
1531
1532 static struct wm_adsp_alg_region *
1533         wm_adsp_find_alg_region(struct wm_adsp *dsp, int type, unsigned int id)
1534 {
1535         struct wm_adsp_alg_region *alg_region;
1536
1537         list_for_each_entry(alg_region, &dsp->alg_regions, list) {
1538                 if (id == alg_region->alg && type == alg_region->type)
1539                         return alg_region;
1540         }
1541
1542         return NULL;
1543 }
1544
1545 static struct wm_adsp_alg_region *wm_adsp_create_region(struct wm_adsp *dsp,
1546                                                         int type, __be32 id,
1547                                                         __be32 base)
1548 {
1549         struct wm_adsp_alg_region *alg_region;
1550
1551         alg_region = kzalloc(sizeof(*alg_region), GFP_KERNEL);
1552         if (!alg_region)
1553                 return ERR_PTR(-ENOMEM);
1554
1555         alg_region->type = type;
1556         alg_region->alg = be32_to_cpu(id);
1557         alg_region->base = be32_to_cpu(base);
1558
1559         list_add_tail(&alg_region->list, &dsp->alg_regions);
1560
1561         if (dsp->fw_ver > 0)
1562                 wm_adsp_ctl_fixup_base(dsp, alg_region);
1563
1564         return alg_region;
1565 }
1566
1567 static int wm_adsp1_setup_algs(struct wm_adsp *dsp)
1568 {
1569         struct wmfw_adsp1_id_hdr adsp1_id;
1570         struct wmfw_adsp1_alg_hdr *adsp1_alg;
1571         struct wm_adsp_alg_region *alg_region;
1572         const struct wm_adsp_region *mem;
1573         unsigned int pos, len;
1574         size_t n_algs;
1575         int i, ret;
1576
1577         mem = wm_adsp_find_region(dsp, WMFW_ADSP1_DM);
1578         if (WARN_ON(!mem))
1579                 return -EINVAL;
1580
1581         ret = regmap_raw_read(dsp->regmap, mem->base, &adsp1_id,
1582                               sizeof(adsp1_id));
1583         if (ret != 0) {
1584                 adsp_err(dsp, "Failed to read algorithm info: %d\n",
1585                          ret);
1586                 return ret;
1587         }
1588
1589         n_algs = be32_to_cpu(adsp1_id.n_algs);
1590         dsp->fw_id = be32_to_cpu(adsp1_id.fw.id);
1591         adsp_info(dsp, "Firmware: %x v%d.%d.%d, %zu algorithms\n",
1592                   dsp->fw_id,
1593                   (be32_to_cpu(adsp1_id.fw.ver) & 0xff0000) >> 16,
1594                   (be32_to_cpu(adsp1_id.fw.ver) & 0xff00) >> 8,
1595                   be32_to_cpu(adsp1_id.fw.ver) & 0xff,
1596                   n_algs);
1597
1598         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_ZM,
1599                                            adsp1_id.fw.id, adsp1_id.zm);
1600         if (IS_ERR(alg_region))
1601                 return PTR_ERR(alg_region);
1602
1603         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_DM,
1604                                            adsp1_id.fw.id, adsp1_id.dm);
1605         if (IS_ERR(alg_region))
1606                 return PTR_ERR(alg_region);
1607
1608         pos = sizeof(adsp1_id) / 2;
1609         len = (sizeof(*adsp1_alg) * n_algs) / 2;
1610
1611         adsp1_alg = wm_adsp_read_algs(dsp, n_algs, mem->base + pos, len);
1612         if (IS_ERR(adsp1_alg))
1613                 return PTR_ERR(adsp1_alg);
1614
1615         for (i = 0; i < n_algs; i++) {
1616                 adsp_info(dsp, "%d: ID %x v%d.%d.%d DM@%x ZM@%x\n",
1617                           i, be32_to_cpu(adsp1_alg[i].alg.id),
1618                           (be32_to_cpu(adsp1_alg[i].alg.ver) & 0xff0000) >> 16,
1619                           (be32_to_cpu(adsp1_alg[i].alg.ver) & 0xff00) >> 8,
1620                           be32_to_cpu(adsp1_alg[i].alg.ver) & 0xff,
1621                           be32_to_cpu(adsp1_alg[i].dm),
1622                           be32_to_cpu(adsp1_alg[i].zm));
1623
1624                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_DM,
1625                                                    adsp1_alg[i].alg.id,
1626                                                    adsp1_alg[i].dm);
1627                 if (IS_ERR(alg_region)) {
1628                         ret = PTR_ERR(alg_region);
1629                         goto out;
1630                 }
1631                 if (dsp->fw_ver == 0) {
1632                         if (i + 1 < n_algs) {
1633                                 len = be32_to_cpu(adsp1_alg[i + 1].dm);
1634                                 len -= be32_to_cpu(adsp1_alg[i].dm);
1635                                 len *= 4;
1636                                 wm_adsp_create_control(dsp, alg_region, 0,
1637                                                        len, NULL, 0, 0);
1638                         } else {
1639                                 adsp_warn(dsp, "Missing length info for region DM with ID %x\n",
1640                                           be32_to_cpu(adsp1_alg[i].alg.id));
1641                         }
1642                 }
1643
1644                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP1_ZM,
1645                                                    adsp1_alg[i].alg.id,
1646                                                    adsp1_alg[i].zm);
1647                 if (IS_ERR(alg_region)) {
1648                         ret = PTR_ERR(alg_region);
1649                         goto out;
1650                 }
1651                 if (dsp->fw_ver == 0) {
1652                         if (i + 1 < n_algs) {
1653                                 len = be32_to_cpu(adsp1_alg[i + 1].zm);
1654                                 len -= be32_to_cpu(adsp1_alg[i].zm);
1655                                 len *= 4;
1656                                 wm_adsp_create_control(dsp, alg_region, 0,
1657                                                        len, NULL, 0, 0);
1658                         } else {
1659                                 adsp_warn(dsp, "Missing length info for region ZM with ID %x\n",
1660                                           be32_to_cpu(adsp1_alg[i].alg.id));
1661                         }
1662                 }
1663         }
1664
1665 out:
1666         kfree(adsp1_alg);
1667         return ret;
1668 }
1669
1670 static int wm_adsp2_setup_algs(struct wm_adsp *dsp)
1671 {
1672         struct wmfw_adsp2_id_hdr adsp2_id;
1673         struct wmfw_adsp2_alg_hdr *adsp2_alg;
1674         struct wm_adsp_alg_region *alg_region;
1675         const struct wm_adsp_region *mem;
1676         unsigned int pos, len;
1677         size_t n_algs;
1678         int i, ret;
1679
1680         mem = wm_adsp_find_region(dsp, WMFW_ADSP2_XM);
1681         if (WARN_ON(!mem))
1682                 return -EINVAL;
1683
1684         ret = regmap_raw_read(dsp->regmap, mem->base, &adsp2_id,
1685                               sizeof(adsp2_id));
1686         if (ret != 0) {
1687                 adsp_err(dsp, "Failed to read algorithm info: %d\n",
1688                          ret);
1689                 return ret;
1690         }
1691
1692         n_algs = be32_to_cpu(adsp2_id.n_algs);
1693         dsp->fw_id = be32_to_cpu(adsp2_id.fw.id);
1694         dsp->fw_id_version = be32_to_cpu(adsp2_id.fw.ver);
1695         adsp_info(dsp, "Firmware: %x v%d.%d.%d, %zu algorithms\n",
1696                   dsp->fw_id,
1697                   (dsp->fw_id_version & 0xff0000) >> 16,
1698                   (dsp->fw_id_version & 0xff00) >> 8,
1699                   dsp->fw_id_version & 0xff,
1700                   n_algs);
1701
1702         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_XM,
1703                                            adsp2_id.fw.id, adsp2_id.xm);
1704         if (IS_ERR(alg_region))
1705                 return PTR_ERR(alg_region);
1706
1707         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_YM,
1708                                            adsp2_id.fw.id, adsp2_id.ym);
1709         if (IS_ERR(alg_region))
1710                 return PTR_ERR(alg_region);
1711
1712         alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_ZM,
1713                                            adsp2_id.fw.id, adsp2_id.zm);
1714         if (IS_ERR(alg_region))
1715                 return PTR_ERR(alg_region);
1716
1717         pos = sizeof(adsp2_id) / 2;
1718         len = (sizeof(*adsp2_alg) * n_algs) / 2;
1719
1720         adsp2_alg = wm_adsp_read_algs(dsp, n_algs, mem->base + pos, len);
1721         if (IS_ERR(adsp2_alg))
1722                 return PTR_ERR(adsp2_alg);
1723
1724         for (i = 0; i < n_algs; i++) {
1725                 adsp_info(dsp,
1726                           "%d: ID %x v%d.%d.%d XM@%x YM@%x ZM@%x\n",
1727                           i, be32_to_cpu(adsp2_alg[i].alg.id),
1728                           (be32_to_cpu(adsp2_alg[i].alg.ver) & 0xff0000) >> 16,
1729                           (be32_to_cpu(adsp2_alg[i].alg.ver) & 0xff00) >> 8,
1730                           be32_to_cpu(adsp2_alg[i].alg.ver) & 0xff,
1731                           be32_to_cpu(adsp2_alg[i].xm),
1732                           be32_to_cpu(adsp2_alg[i].ym),
1733                           be32_to_cpu(adsp2_alg[i].zm));
1734
1735                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_XM,
1736                                                    adsp2_alg[i].alg.id,
1737                                                    adsp2_alg[i].xm);
1738                 if (IS_ERR(alg_region)) {
1739                         ret = PTR_ERR(alg_region);
1740                         goto out;
1741                 }
1742                 if (dsp->fw_ver == 0) {
1743                         if (i + 1 < n_algs) {
1744                                 len = be32_to_cpu(adsp2_alg[i + 1].xm);
1745                                 len -= be32_to_cpu(adsp2_alg[i].xm);
1746                                 len *= 4;
1747                                 wm_adsp_create_control(dsp, alg_region, 0,
1748                                                        len, NULL, 0, 0);
1749                         } else {
1750                                 adsp_warn(dsp, "Missing length info for region XM with ID %x\n",
1751                                           be32_to_cpu(adsp2_alg[i].alg.id));
1752                         }
1753                 }
1754
1755                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_YM,
1756                                                    adsp2_alg[i].alg.id,
1757                                                    adsp2_alg[i].ym);
1758                 if (IS_ERR(alg_region)) {
1759                         ret = PTR_ERR(alg_region);
1760                         goto out;
1761                 }
1762                 if (dsp->fw_ver == 0) {
1763                         if (i + 1 < n_algs) {
1764                                 len = be32_to_cpu(adsp2_alg[i + 1].ym);
1765                                 len -= be32_to_cpu(adsp2_alg[i].ym);
1766                                 len *= 4;
1767                                 wm_adsp_create_control(dsp, alg_region, 0,
1768                                                        len, NULL, 0, 0);
1769                         } else {
1770                                 adsp_warn(dsp, "Missing length info for region YM with ID %x\n",
1771                                           be32_to_cpu(adsp2_alg[i].alg.id));
1772                         }
1773                 }
1774
1775                 alg_region = wm_adsp_create_region(dsp, WMFW_ADSP2_ZM,
1776                                                    adsp2_alg[i].alg.id,
1777                                                    adsp2_alg[i].zm);
1778                 if (IS_ERR(alg_region)) {
1779                         ret = PTR_ERR(alg_region);
1780                         goto out;
1781                 }
1782                 if (dsp->fw_ver == 0) {
1783                         if (i + 1 < n_algs) {
1784                                 len = be32_to_cpu(adsp2_alg[i + 1].zm);
1785                                 len -= be32_to_cpu(adsp2_alg[i].zm);
1786                                 len *= 4;
1787                                 wm_adsp_create_control(dsp, alg_region, 0,
1788                                                        len, NULL, 0, 0);
1789                         } else {
1790                                 adsp_warn(dsp, "Missing length info for region ZM with ID %x\n",
1791                                           be32_to_cpu(adsp2_alg[i].alg.id));
1792                         }
1793                 }
1794         }
1795
1796 out:
1797         kfree(adsp2_alg);
1798         return ret;
1799 }
1800
1801 static int wm_adsp_load_coeff(struct wm_adsp *dsp)
1802 {
1803         LIST_HEAD(buf_list);
1804         struct regmap *regmap = dsp->regmap;
1805         struct wmfw_coeff_hdr *hdr;
1806         struct wmfw_coeff_item *blk;
1807         const struct firmware *firmware;
1808         const struct wm_adsp_region *mem;
1809         struct wm_adsp_alg_region *alg_region;
1810         const char *region_name;
1811         int ret, pos, blocks, type, offset, reg;
1812         char *file;
1813         struct wm_adsp_buf *buf;
1814
1815         file = kzalloc(PAGE_SIZE, GFP_KERNEL);
1816         if (file == NULL)
1817                 return -ENOMEM;
1818
1819         snprintf(file, PAGE_SIZE, "%s-dsp%d-%s.bin", dsp->part, dsp->num,
1820                  wm_adsp_fw[dsp->fw].file);
1821         file[PAGE_SIZE - 1] = '\0';
1822
1823         ret = request_firmware(&firmware, file, dsp->dev);
1824         if (ret != 0) {
1825                 adsp_warn(dsp, "Failed to request '%s'\n", file);
1826                 ret = 0;
1827                 goto out;
1828         }
1829         ret = -EINVAL;
1830
1831         if (sizeof(*hdr) >= firmware->size) {
1832                 adsp_err(dsp, "%s: file too short, %zu bytes\n",
1833                         file, firmware->size);
1834                 goto out_fw;
1835         }
1836
1837         hdr = (void *)&firmware->data[0];
1838         if (memcmp(hdr->magic, "WMDR", 4) != 0) {
1839                 adsp_err(dsp, "%s: invalid magic\n", file);
1840                 goto out_fw;
1841         }
1842
1843         switch (be32_to_cpu(hdr->rev) & 0xff) {
1844         case 1:
1845                 break;
1846         default:
1847                 adsp_err(dsp, "%s: Unsupported coefficient file format %d\n",
1848                          file, be32_to_cpu(hdr->rev) & 0xff);
1849                 ret = -EINVAL;
1850                 goto out_fw;
1851         }
1852
1853         adsp_dbg(dsp, "%s: v%d.%d.%d\n", file,
1854                 (le32_to_cpu(hdr->ver) >> 16) & 0xff,
1855                 (le32_to_cpu(hdr->ver) >>  8) & 0xff,
1856                 le32_to_cpu(hdr->ver) & 0xff);
1857
1858         pos = le32_to_cpu(hdr->len);
1859
1860         blocks = 0;
1861         while (pos < firmware->size &&
1862                pos - firmware->size > sizeof(*blk)) {
1863                 blk = (void *)(&firmware->data[pos]);
1864
1865                 type = le16_to_cpu(blk->type);
1866                 offset = le16_to_cpu(blk->offset);
1867
1868                 adsp_dbg(dsp, "%s.%d: %x v%d.%d.%d\n",
1869                          file, blocks, le32_to_cpu(blk->id),
1870                          (le32_to_cpu(blk->ver) >> 16) & 0xff,
1871                          (le32_to_cpu(blk->ver) >>  8) & 0xff,
1872                          le32_to_cpu(blk->ver) & 0xff);
1873                 adsp_dbg(dsp, "%s.%d: %d bytes at 0x%x in %x\n",
1874                          file, blocks, le32_to_cpu(blk->len), offset, type);
1875
1876                 reg = 0;
1877                 region_name = "Unknown";
1878                 switch (type) {
1879                 case (WMFW_NAME_TEXT << 8):
1880                 case (WMFW_INFO_TEXT << 8):
1881                         break;
1882                 case (WMFW_ABSOLUTE << 8):
1883                         /*
1884                          * Old files may use this for global
1885                          * coefficients.
1886                          */
1887                         if (le32_to_cpu(blk->id) == dsp->fw_id &&
1888                             offset == 0) {
1889                                 region_name = "global coefficients";
1890                                 mem = wm_adsp_find_region(dsp, type);
1891                                 if (!mem) {
1892                                         adsp_err(dsp, "No ZM\n");
1893                                         break;
1894                                 }
1895                                 reg = wm_adsp_region_to_reg(mem, 0);
1896
1897                         } else {
1898                                 region_name = "register";
1899                                 reg = offset;
1900                         }
1901                         break;
1902
1903                 case WMFW_ADSP1_DM:
1904                 case WMFW_ADSP1_ZM:
1905                 case WMFW_ADSP2_XM:
1906                 case WMFW_ADSP2_YM:
1907                         adsp_dbg(dsp, "%s.%d: %d bytes in %x for %x\n",
1908                                  file, blocks, le32_to_cpu(blk->len),
1909                                  type, le32_to_cpu(blk->id));
1910
1911                         mem = wm_adsp_find_region(dsp, type);
1912                         if (!mem) {
1913                                 adsp_err(dsp, "No base for region %x\n", type);
1914                                 break;
1915                         }
1916
1917                         alg_region = wm_adsp_find_alg_region(dsp, type,
1918                                                 le32_to_cpu(blk->id));
1919                         if (alg_region) {
1920                                 reg = alg_region->base;
1921                                 reg = wm_adsp_region_to_reg(mem, reg);
1922                                 reg += offset;
1923                         } else {
1924                                 adsp_err(dsp, "No %x for algorithm %x\n",
1925                                          type, le32_to_cpu(blk->id));
1926                         }
1927                         break;
1928
1929                 default:
1930                         adsp_err(dsp, "%s.%d: Unknown region type %x at %d\n",
1931                                  file, blocks, type, pos);
1932                         break;
1933                 }
1934
1935                 if (reg) {
1936                         buf = wm_adsp_buf_alloc(blk->data,
1937                                                 le32_to_cpu(blk->len),
1938                                                 &buf_list);
1939                         if (!buf) {
1940                                 adsp_err(dsp, "Out of memory\n");
1941                                 ret = -ENOMEM;
1942                                 goto out_fw;
1943                         }
1944
1945                         adsp_dbg(dsp, "%s.%d: Writing %d bytes at %x\n",
1946                                  file, blocks, le32_to_cpu(blk->len),
1947                                  reg);
1948                         ret = regmap_raw_write_async(regmap, reg, buf->buf,
1949                                                      le32_to_cpu(blk->len));
1950                         if (ret != 0) {
1951                                 adsp_err(dsp,
1952                                         "%s.%d: Failed to write to %x in %s: %d\n",
1953                                         file, blocks, reg, region_name, ret);
1954                         }
1955                 }
1956
1957                 pos += (le32_to_cpu(blk->len) + sizeof(*blk) + 3) & ~0x03;
1958                 blocks++;
1959         }
1960
1961         ret = regmap_async_complete(regmap);
1962         if (ret != 0)
1963                 adsp_err(dsp, "Failed to complete async write: %d\n", ret);
1964
1965         if (pos > firmware->size)
1966                 adsp_warn(dsp, "%s.%d: %zu bytes at end of file\n",
1967                           file, blocks, pos - firmware->size);
1968
1969         wm_adsp_debugfs_save_binname(dsp, file);
1970
1971 out_fw:
1972         regmap_async_complete(regmap);
1973         release_firmware(firmware);
1974         wm_adsp_buf_free(&buf_list);
1975 out:
1976         kfree(file);
1977         return ret;
1978 }
1979
1980 int wm_adsp1_init(struct wm_adsp *dsp)
1981 {
1982         INIT_LIST_HEAD(&dsp->alg_regions);
1983
1984         mutex_init(&dsp->pwr_lock);
1985
1986         return 0;
1987 }
1988 EXPORT_SYMBOL_GPL(wm_adsp1_init);
1989
1990 int wm_adsp1_event(struct snd_soc_dapm_widget *w,
1991                    struct snd_kcontrol *kcontrol,
1992                    int event)
1993 {
1994         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
1995         struct wm_adsp *dsps = snd_soc_codec_get_drvdata(codec);
1996         struct wm_adsp *dsp = &dsps[w->shift];
1997         struct wm_adsp_alg_region *alg_region;
1998         struct wm_coeff_ctl *ctl;
1999         int ret;
2000         unsigned int val;
2001
2002         dsp->card = codec->component.card;
2003
2004         mutex_lock(&dsp->pwr_lock);
2005
2006         switch (event) {
2007         case SND_SOC_DAPM_POST_PMU:
2008                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2009                                    ADSP1_SYS_ENA, ADSP1_SYS_ENA);
2010
2011                 /*
2012                  * For simplicity set the DSP clock rate to be the
2013                  * SYSCLK rate rather than making it configurable.
2014                  */
2015                 if (dsp->sysclk_reg) {
2016                         ret = regmap_read(dsp->regmap, dsp->sysclk_reg, &val);
2017                         if (ret != 0) {
2018                                 adsp_err(dsp, "Failed to read SYSCLK state: %d\n",
2019                                 ret);
2020                                 goto err_mutex;
2021                         }
2022
2023                         val = (val & dsp->sysclk_mask) >> dsp->sysclk_shift;
2024
2025                         ret = regmap_update_bits(dsp->regmap,
2026                                                  dsp->base + ADSP1_CONTROL_31,
2027                                                  ADSP1_CLK_SEL_MASK, val);
2028                         if (ret != 0) {
2029                                 adsp_err(dsp, "Failed to set clock rate: %d\n",
2030                                          ret);
2031                                 goto err_mutex;
2032                         }
2033                 }
2034
2035                 ret = wm_adsp_load(dsp);
2036                 if (ret != 0)
2037                         goto err_ena;
2038
2039                 ret = wm_adsp1_setup_algs(dsp);
2040                 if (ret != 0)
2041                         goto err_ena;
2042
2043                 ret = wm_adsp_load_coeff(dsp);
2044                 if (ret != 0)
2045                         goto err_ena;
2046
2047                 /* Initialize caches for enabled and unset controls */
2048                 ret = wm_coeff_init_control_caches(dsp);
2049                 if (ret != 0)
2050                         goto err_ena;
2051
2052                 /* Sync set controls */
2053                 ret = wm_coeff_sync_controls(dsp);
2054                 if (ret != 0)
2055                         goto err_ena;
2056
2057                 /* Start the core running */
2058                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2059                                    ADSP1_CORE_ENA | ADSP1_START,
2060                                    ADSP1_CORE_ENA | ADSP1_START);
2061                 break;
2062
2063         case SND_SOC_DAPM_PRE_PMD:
2064                 /* Halt the core */
2065                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2066                                    ADSP1_CORE_ENA | ADSP1_START, 0);
2067
2068                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_19,
2069                                    ADSP1_WDMA_BUFFER_LENGTH_MASK, 0);
2070
2071                 regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2072                                    ADSP1_SYS_ENA, 0);
2073
2074                 list_for_each_entry(ctl, &dsp->ctl_list, list)
2075                         ctl->enabled = 0;
2076
2077                 while (!list_empty(&dsp->alg_regions)) {
2078                         alg_region = list_first_entry(&dsp->alg_regions,
2079                                                       struct wm_adsp_alg_region,
2080                                                       list);
2081                         list_del(&alg_region->list);
2082                         kfree(alg_region);
2083                 }
2084                 break;
2085
2086         default:
2087                 break;
2088         }
2089
2090         mutex_unlock(&dsp->pwr_lock);
2091
2092         return 0;
2093
2094 err_ena:
2095         regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30,
2096                            ADSP1_SYS_ENA, 0);
2097 err_mutex:
2098         mutex_unlock(&dsp->pwr_lock);
2099
2100         return ret;
2101 }
2102 EXPORT_SYMBOL_GPL(wm_adsp1_event);
2103
2104 static int wm_adsp2_ena(struct wm_adsp *dsp)
2105 {
2106         unsigned int val;
2107         int ret, count;
2108
2109         ret = regmap_update_bits_async(dsp->regmap, dsp->base + ADSP2_CONTROL,
2110                                        ADSP2_SYS_ENA, ADSP2_SYS_ENA);
2111         if (ret != 0)
2112                 return ret;
2113
2114         /* Wait for the RAM to start, should be near instantaneous */
2115         for (count = 0; count < 10; ++count) {
2116                 ret = regmap_read(dsp->regmap, dsp->base + ADSP2_STATUS1, &val);
2117                 if (ret != 0)
2118                         return ret;
2119
2120                 if (val & ADSP2_RAM_RDY)
2121                         break;
2122
2123                 msleep(1);
2124         }
2125
2126         if (!(val & ADSP2_RAM_RDY)) {
2127                 adsp_err(dsp, "Failed to start DSP RAM\n");
2128                 return -EBUSY;
2129         }
2130
2131         adsp_dbg(dsp, "RAM ready after %d polls\n", count);
2132
2133         return 0;
2134 }
2135
2136 static void wm_adsp2_boot_work(struct work_struct *work)
2137 {
2138         struct wm_adsp *dsp = container_of(work,
2139                                            struct wm_adsp,
2140                                            boot_work);
2141         int ret;
2142
2143         mutex_lock(&dsp->pwr_lock);
2144
2145         ret = wm_adsp2_ena(dsp);
2146         if (ret != 0)
2147                 goto err_mutex;
2148
2149         ret = wm_adsp_load(dsp);
2150         if (ret != 0)
2151                 goto err_ena;
2152
2153         ret = wm_adsp2_setup_algs(dsp);
2154         if (ret != 0)
2155                 goto err_ena;
2156
2157         ret = wm_adsp_load_coeff(dsp);
2158         if (ret != 0)
2159                 goto err_ena;
2160
2161         /* Initialize caches for enabled and unset controls */
2162         ret = wm_coeff_init_control_caches(dsp);
2163         if (ret != 0)
2164                 goto err_ena;
2165
2166         /* Sync set controls */
2167         ret = wm_coeff_sync_controls(dsp);
2168         if (ret != 0)
2169                 goto err_ena;
2170
2171         dsp->running = true;
2172
2173         mutex_unlock(&dsp->pwr_lock);
2174
2175         return;
2176
2177 err_ena:
2178         regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2179                            ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0);
2180 err_mutex:
2181         mutex_unlock(&dsp->pwr_lock);
2182 }
2183
2184 static void wm_adsp2_set_dspclk(struct wm_adsp *dsp, unsigned int freq)
2185 {
2186         int ret;
2187
2188         ret = regmap_update_bits_async(dsp->regmap,
2189                                        dsp->base + ADSP2_CLOCKING,
2190                                        ADSP2_CLK_SEL_MASK,
2191                                        freq << ADSP2_CLK_SEL_SHIFT);
2192         if (ret != 0)
2193                 adsp_err(dsp, "Failed to set clock rate: %d\n", ret);
2194 }
2195
2196 int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
2197                          struct snd_kcontrol *kcontrol, int event,
2198                          unsigned int freq)
2199 {
2200         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
2201         struct wm_adsp *dsps = snd_soc_codec_get_drvdata(codec);
2202         struct wm_adsp *dsp = &dsps[w->shift];
2203
2204         dsp->card = codec->component.card;
2205
2206         switch (event) {
2207         case SND_SOC_DAPM_PRE_PMU:
2208                 wm_adsp2_set_dspclk(dsp, freq);
2209                 queue_work(system_unbound_wq, &dsp->boot_work);
2210                 break;
2211         default:
2212                 break;
2213         }
2214
2215         return 0;
2216 }
2217 EXPORT_SYMBOL_GPL(wm_adsp2_early_event);
2218
2219 int wm_adsp2_event(struct snd_soc_dapm_widget *w,
2220                    struct snd_kcontrol *kcontrol, int event)
2221 {
2222         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
2223         struct wm_adsp *dsps = snd_soc_codec_get_drvdata(codec);
2224         struct wm_adsp *dsp = &dsps[w->shift];
2225         struct wm_adsp_alg_region *alg_region;
2226         struct wm_coeff_ctl *ctl;
2227         int ret;
2228
2229         switch (event) {
2230         case SND_SOC_DAPM_POST_PMU:
2231                 flush_work(&dsp->boot_work);
2232
2233                 if (!dsp->running)
2234                         return -EIO;
2235
2236                 ret = regmap_update_bits(dsp->regmap,
2237                                          dsp->base + ADSP2_CONTROL,
2238                                          ADSP2_CORE_ENA | ADSP2_START,
2239                                          ADSP2_CORE_ENA | ADSP2_START);
2240                 if (ret != 0)
2241                         goto err;
2242
2243                 if (wm_adsp_fw[dsp->fw].num_caps != 0)
2244                         ret = wm_adsp_buffer_init(dsp);
2245
2246                 break;
2247
2248         case SND_SOC_DAPM_PRE_PMD:
2249                 /* Log firmware state, it can be useful for analysis */
2250                 wm_adsp2_show_fw_status(dsp);
2251
2252                 mutex_lock(&dsp->pwr_lock);
2253
2254                 wm_adsp_debugfs_clear(dsp);
2255
2256                 dsp->fw_id = 0;
2257                 dsp->fw_id_version = 0;
2258                 dsp->running = false;
2259
2260                 regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2261                                    ADSP2_SYS_ENA | ADSP2_CORE_ENA |
2262                                    ADSP2_START, 0);
2263
2264                 /* Make sure DMAs are quiesced */
2265                 regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_1, 0);
2266                 regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_2, 0);
2267                 regmap_write(dsp->regmap, dsp->base + ADSP2_RDMA_CONFIG_1, 0);
2268
2269                 list_for_each_entry(ctl, &dsp->ctl_list, list)
2270                         ctl->enabled = 0;
2271
2272                 while (!list_empty(&dsp->alg_regions)) {
2273                         alg_region = list_first_entry(&dsp->alg_regions,
2274                                                       struct wm_adsp_alg_region,
2275                                                       list);
2276                         list_del(&alg_region->list);
2277                         kfree(alg_region);
2278                 }
2279
2280                 if (wm_adsp_fw[dsp->fw].num_caps != 0)
2281                         wm_adsp_buffer_free(dsp);
2282
2283                 mutex_unlock(&dsp->pwr_lock);
2284
2285                 adsp_dbg(dsp, "Shutdown complete\n");
2286                 break;
2287
2288         default:
2289                 break;
2290         }
2291
2292         return 0;
2293 err:
2294         regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2295                            ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0);
2296         return ret;
2297 }
2298 EXPORT_SYMBOL_GPL(wm_adsp2_event);
2299
2300 int wm_adsp2_codec_probe(struct wm_adsp *dsp, struct snd_soc_codec *codec)
2301 {
2302         wm_adsp2_init_debugfs(dsp, codec);
2303
2304         return snd_soc_add_codec_controls(codec,
2305                                           &wm_adsp_fw_controls[dsp->num - 1],
2306                                           1);
2307 }
2308 EXPORT_SYMBOL_GPL(wm_adsp2_codec_probe);
2309
2310 int wm_adsp2_codec_remove(struct wm_adsp *dsp, struct snd_soc_codec *codec)
2311 {
2312         wm_adsp2_cleanup_debugfs(dsp);
2313
2314         return 0;
2315 }
2316 EXPORT_SYMBOL_GPL(wm_adsp2_codec_remove);
2317
2318 int wm_adsp2_init(struct wm_adsp *dsp)
2319 {
2320         int ret;
2321
2322         /*
2323          * Disable the DSP memory by default when in reset for a small
2324          * power saving.
2325          */
2326         ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
2327                                  ADSP2_MEM_ENA, 0);
2328         if (ret != 0) {
2329                 adsp_err(dsp, "Failed to clear memory retention: %d\n", ret);
2330                 return ret;
2331         }
2332
2333         INIT_LIST_HEAD(&dsp->alg_regions);
2334         INIT_LIST_HEAD(&dsp->ctl_list);
2335         INIT_WORK(&dsp->boot_work, wm_adsp2_boot_work);
2336
2337         mutex_init(&dsp->pwr_lock);
2338
2339         return 0;
2340 }
2341 EXPORT_SYMBOL_GPL(wm_adsp2_init);
2342
2343 int wm_adsp_compr_open(struct wm_adsp *dsp, struct snd_compr_stream *stream)
2344 {
2345         struct wm_adsp_compr *compr;
2346         int ret = 0;
2347
2348         mutex_lock(&dsp->pwr_lock);
2349
2350         if (wm_adsp_fw[dsp->fw].num_caps == 0) {
2351                 adsp_err(dsp, "Firmware does not support compressed API\n");
2352                 ret = -ENXIO;
2353                 goto out;
2354         }
2355
2356         if (wm_adsp_fw[dsp->fw].compr_direction != stream->direction) {
2357                 adsp_err(dsp, "Firmware does not support stream direction\n");
2358                 ret = -EINVAL;
2359                 goto out;
2360         }
2361
2362         if (dsp->compr) {
2363                 /* It is expect this limitation will be removed in future */
2364                 adsp_err(dsp, "Only a single stream supported per DSP\n");
2365                 ret = -EBUSY;
2366                 goto out;
2367         }
2368
2369         compr = kzalloc(sizeof(*compr), GFP_KERNEL);
2370         if (!compr) {
2371                 ret = -ENOMEM;
2372                 goto out;
2373         }
2374
2375         compr->dsp = dsp;
2376         compr->stream = stream;
2377
2378         dsp->compr = compr;
2379
2380         stream->runtime->private_data = compr;
2381
2382 out:
2383         mutex_unlock(&dsp->pwr_lock);
2384
2385         return ret;
2386 }
2387 EXPORT_SYMBOL_GPL(wm_adsp_compr_open);
2388
2389 int wm_adsp_compr_free(struct snd_compr_stream *stream)
2390 {
2391         struct wm_adsp_compr *compr = stream->runtime->private_data;
2392         struct wm_adsp *dsp = compr->dsp;
2393
2394         mutex_lock(&dsp->pwr_lock);
2395
2396         dsp->compr = NULL;
2397
2398         kfree(compr->raw_buf);
2399         kfree(compr);
2400
2401         mutex_unlock(&dsp->pwr_lock);
2402
2403         return 0;
2404 }
2405 EXPORT_SYMBOL_GPL(wm_adsp_compr_free);
2406
2407 static int wm_adsp_compr_check_params(struct snd_compr_stream *stream,
2408                                       struct snd_compr_params *params)
2409 {
2410         struct wm_adsp_compr *compr = stream->runtime->private_data;
2411         struct wm_adsp *dsp = compr->dsp;
2412         const struct wm_adsp_fw_caps *caps;
2413         const struct snd_codec_desc *desc;
2414         int i, j;
2415
2416         if (params->buffer.fragment_size < WM_ADSP_MIN_FRAGMENT_SIZE ||
2417             params->buffer.fragment_size > WM_ADSP_MAX_FRAGMENT_SIZE ||
2418             params->buffer.fragments < WM_ADSP_MIN_FRAGMENTS ||
2419             params->buffer.fragments > WM_ADSP_MAX_FRAGMENTS ||
2420             params->buffer.fragment_size % WM_ADSP_DATA_WORD_SIZE) {
2421                 adsp_err(dsp, "Invalid buffer fragsize=%d fragments=%d\n",
2422                          params->buffer.fragment_size,
2423                          params->buffer.fragments);
2424
2425                 return -EINVAL;
2426         }
2427
2428         for (i = 0; i < wm_adsp_fw[dsp->fw].num_caps; i++) {
2429                 caps = &wm_adsp_fw[dsp->fw].caps[i];
2430                 desc = &caps->desc;
2431
2432                 if (caps->id != params->codec.id)
2433                         continue;
2434
2435                 if (stream->direction == SND_COMPRESS_PLAYBACK) {
2436                         if (desc->max_ch < params->codec.ch_out)
2437                                 continue;
2438                 } else {
2439                         if (desc->max_ch < params->codec.ch_in)
2440                                 continue;
2441                 }
2442
2443                 if (!(desc->formats & (1 << params->codec.format)))
2444                         continue;
2445
2446                 for (j = 0; j < desc->num_sample_rates; ++j)
2447                         if (desc->sample_rates[j] == params->codec.sample_rate)
2448                                 return 0;
2449         }
2450
2451         adsp_err(dsp, "Invalid params id=%u ch=%u,%u rate=%u fmt=%u\n",
2452                  params->codec.id, params->codec.ch_in, params->codec.ch_out,
2453                  params->codec.sample_rate, params->codec.format);
2454         return -EINVAL;
2455 }
2456
2457 static inline unsigned int wm_adsp_compr_frag_words(struct wm_adsp_compr *compr)
2458 {
2459         return compr->size.fragment_size / WM_ADSP_DATA_WORD_SIZE;
2460 }
2461
2462 int wm_adsp_compr_set_params(struct snd_compr_stream *stream,
2463                              struct snd_compr_params *params)
2464 {
2465         struct wm_adsp_compr *compr = stream->runtime->private_data;
2466         unsigned int size;
2467         int ret;
2468
2469         ret = wm_adsp_compr_check_params(stream, params);
2470         if (ret)
2471                 return ret;
2472
2473         compr->size = params->buffer;
2474
2475         adsp_dbg(compr->dsp, "fragment_size=%d fragments=%d\n",
2476                  compr->size.fragment_size, compr->size.fragments);
2477
2478         size = wm_adsp_compr_frag_words(compr) * sizeof(*compr->raw_buf);
2479         compr->raw_buf = kmalloc(size, GFP_DMA | GFP_KERNEL);
2480         if (!compr->raw_buf)
2481                 return -ENOMEM;
2482
2483         compr->sample_rate = params->codec.sample_rate;
2484
2485         return 0;
2486 }
2487 EXPORT_SYMBOL_GPL(wm_adsp_compr_set_params);
2488
2489 int wm_adsp_compr_get_caps(struct snd_compr_stream *stream,
2490                            struct snd_compr_caps *caps)
2491 {
2492         struct wm_adsp_compr *compr = stream->runtime->private_data;
2493         int fw = compr->dsp->fw;
2494         int i;
2495
2496         if (wm_adsp_fw[fw].caps) {
2497                 for (i = 0; i < wm_adsp_fw[fw].num_caps; i++)
2498                         caps->codecs[i] = wm_adsp_fw[fw].caps[i].id;
2499
2500                 caps->num_codecs = i;
2501                 caps->direction = wm_adsp_fw[fw].compr_direction;
2502
2503                 caps->min_fragment_size = WM_ADSP_MIN_FRAGMENT_SIZE;
2504                 caps->max_fragment_size = WM_ADSP_MAX_FRAGMENT_SIZE;
2505                 caps->min_fragments = WM_ADSP_MIN_FRAGMENTS;
2506                 caps->max_fragments = WM_ADSP_MAX_FRAGMENTS;
2507         }
2508
2509         return 0;
2510 }
2511 EXPORT_SYMBOL_GPL(wm_adsp_compr_get_caps);
2512
2513 static int wm_adsp_read_data_block(struct wm_adsp *dsp, int mem_type,
2514                                    unsigned int mem_addr,
2515                                    unsigned int num_words, u32 *data)
2516 {
2517         struct wm_adsp_region const *mem = wm_adsp_find_region(dsp, mem_type);
2518         unsigned int i, reg;
2519         int ret;
2520
2521         if (!mem)
2522                 return -EINVAL;
2523
2524         reg = wm_adsp_region_to_reg(mem, mem_addr);
2525
2526         ret = regmap_raw_read(dsp->regmap, reg, data,
2527                               sizeof(*data) * num_words);
2528         if (ret < 0)
2529                 return ret;
2530
2531         for (i = 0; i < num_words; ++i)
2532                 data[i] = be32_to_cpu(data[i]) & 0x00ffffffu;
2533
2534         return 0;
2535 }
2536
2537 static inline int wm_adsp_read_data_word(struct wm_adsp *dsp, int mem_type,
2538                                          unsigned int mem_addr, u32 *data)
2539 {
2540         return wm_adsp_read_data_block(dsp, mem_type, mem_addr, 1, data);
2541 }
2542
2543 static int wm_adsp_write_data_word(struct wm_adsp *dsp, int mem_type,
2544                                    unsigned int mem_addr, u32 data)
2545 {
2546         struct wm_adsp_region const *mem = wm_adsp_find_region(dsp, mem_type);
2547         unsigned int reg;
2548
2549         if (!mem)
2550                 return -EINVAL;
2551
2552         reg = wm_adsp_region_to_reg(mem, mem_addr);
2553
2554         data = cpu_to_be32(data & 0x00ffffffu);
2555
2556         return regmap_raw_write(dsp->regmap, reg, &data, sizeof(data));
2557 }
2558
2559 static inline int wm_adsp_buffer_read(struct wm_adsp_compr_buf *buf,
2560                                       unsigned int field_offset, u32 *data)
2561 {
2562         return wm_adsp_read_data_word(buf->dsp, WMFW_ADSP2_XM,
2563                                       buf->host_buf_ptr + field_offset, data);
2564 }
2565
2566 static inline int wm_adsp_buffer_write(struct wm_adsp_compr_buf *buf,
2567                                        unsigned int field_offset, u32 data)
2568 {
2569         return wm_adsp_write_data_word(buf->dsp, WMFW_ADSP2_XM,
2570                                        buf->host_buf_ptr + field_offset, data);
2571 }
2572
2573 static int wm_adsp_buffer_locate(struct wm_adsp_compr_buf *buf)
2574 {
2575         struct wm_adsp_alg_region *alg_region;
2576         struct wm_adsp *dsp = buf->dsp;
2577         u32 xmalg, addr, magic;
2578         int i, ret;
2579
2580         alg_region = wm_adsp_find_alg_region(dsp, WMFW_ADSP2_XM, dsp->fw_id);
2581         xmalg = sizeof(struct wm_adsp_system_config_xm_hdr) / sizeof(__be32);
2582
2583         addr = alg_region->base + xmalg + ALG_XM_FIELD(magic);
2584         ret = wm_adsp_read_data_word(dsp, WMFW_ADSP2_XM, addr, &magic);
2585         if (ret < 0)
2586                 return ret;
2587
2588         if (magic != WM_ADSP_ALG_XM_STRUCT_MAGIC)
2589                 return -EINVAL;
2590
2591         addr = alg_region->base + xmalg + ALG_XM_FIELD(host_buf_ptr);
2592         for (i = 0; i < 5; ++i) {
2593                 ret = wm_adsp_read_data_word(dsp, WMFW_ADSP2_XM, addr,
2594                                              &buf->host_buf_ptr);
2595                 if (ret < 0)
2596                         return ret;
2597
2598                 if (buf->host_buf_ptr)
2599                         break;
2600
2601                 usleep_range(1000, 2000);
2602         }
2603
2604         if (!buf->host_buf_ptr)
2605                 return -EIO;
2606
2607         adsp_dbg(dsp, "host_buf_ptr=%x\n", buf->host_buf_ptr);
2608
2609         return 0;
2610 }
2611
2612 static int wm_adsp_buffer_populate(struct wm_adsp_compr_buf *buf)
2613 {
2614         const struct wm_adsp_fw_caps *caps = wm_adsp_fw[buf->dsp->fw].caps;
2615         struct wm_adsp_buffer_region *region;
2616         u32 offset = 0;
2617         int i, ret;
2618
2619         for (i = 0; i < caps->num_regions; ++i) {
2620                 region = &buf->regions[i];
2621
2622                 region->offset = offset;
2623                 region->mem_type = caps->region_defs[i].mem_type;
2624
2625                 ret = wm_adsp_buffer_read(buf, caps->region_defs[i].base_offset,
2626                                           &region->base_addr);
2627                 if (ret < 0)
2628                         return ret;
2629
2630                 ret = wm_adsp_buffer_read(buf, caps->region_defs[i].size_offset,
2631                                           &offset);
2632                 if (ret < 0)
2633                         return ret;
2634
2635                 region->cumulative_size = offset;
2636
2637                 adsp_dbg(buf->dsp,
2638                          "region=%d type=%d base=%04x off=%04x size=%04x\n",
2639                          i, region->mem_type, region->base_addr,
2640                          region->offset, region->cumulative_size);
2641         }
2642
2643         return 0;
2644 }
2645
2646 static int wm_adsp_buffer_init(struct wm_adsp *dsp)
2647 {
2648         struct wm_adsp_compr_buf *buf;
2649         int ret;
2650
2651         buf = kzalloc(sizeof(*buf), GFP_KERNEL);
2652         if (!buf)
2653                 return -ENOMEM;
2654
2655         buf->dsp = dsp;
2656         buf->read_index = -1;
2657         buf->irq_count = 0xFFFFFFFF;
2658
2659         ret = wm_adsp_buffer_locate(buf);
2660         if (ret < 0) {
2661                 adsp_err(dsp, "Failed to acquire host buffer: %d\n", ret);
2662                 goto err_buffer;
2663         }
2664
2665         buf->regions = kcalloc(wm_adsp_fw[dsp->fw].caps->num_regions,
2666                                sizeof(*buf->regions), GFP_KERNEL);
2667         if (!buf->regions) {
2668                 ret = -ENOMEM;
2669                 goto err_buffer;
2670         }
2671
2672         ret = wm_adsp_buffer_populate(buf);
2673         if (ret < 0) {
2674                 adsp_err(dsp, "Failed to populate host buffer: %d\n", ret);
2675                 goto err_regions;
2676         }
2677
2678         dsp->buffer = buf;
2679
2680         return 0;
2681
2682 err_regions:
2683         kfree(buf->regions);
2684 err_buffer:
2685         kfree(buf);
2686         return ret;
2687 }
2688
2689 static int wm_adsp_buffer_free(struct wm_adsp *dsp)
2690 {
2691         if (dsp->buffer) {
2692                 kfree(dsp->buffer->regions);
2693                 kfree(dsp->buffer);
2694
2695                 dsp->buffer = NULL;
2696         }
2697
2698         return 0;
2699 }
2700
2701 static inline int wm_adsp_compr_attached(struct wm_adsp_compr *compr)
2702 {
2703         return compr->buf != NULL;
2704 }
2705
2706 static int wm_adsp_compr_attach(struct wm_adsp_compr *compr)
2707 {
2708         /*
2709          * Note this will be more complex once each DSP can support multiple
2710          * streams
2711          */
2712         if (!compr->dsp->buffer)
2713                 return -EINVAL;
2714
2715         compr->buf = compr->dsp->buffer;
2716
2717         return 0;
2718 }
2719
2720 int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd)
2721 {
2722         struct wm_adsp_compr *compr = stream->runtime->private_data;
2723         struct wm_adsp *dsp = compr->dsp;
2724         int ret = 0;
2725
2726         adsp_dbg(dsp, "Trigger: %d\n", cmd);
2727
2728         mutex_lock(&dsp->pwr_lock);
2729
2730         switch (cmd) {
2731         case SNDRV_PCM_TRIGGER_START:
2732                 if (wm_adsp_compr_attached(compr))
2733                         break;
2734
2735                 ret = wm_adsp_compr_attach(compr);
2736                 if (ret < 0) {
2737                         adsp_err(dsp, "Failed to link buffer and stream: %d\n",
2738                                  ret);
2739                         break;
2740                 }
2741
2742                 /* Trigger the IRQ at one fragment of data */
2743                 ret = wm_adsp_buffer_write(compr->buf,
2744                                            HOST_BUFFER_FIELD(high_water_mark),
2745                                            wm_adsp_compr_frag_words(compr));
2746                 if (ret < 0) {
2747                         adsp_err(dsp, "Failed to set high water mark: %d\n",
2748                                  ret);
2749                         break;
2750                 }
2751                 break;
2752         case SNDRV_PCM_TRIGGER_STOP:
2753                 break;
2754         default:
2755                 ret = -EINVAL;
2756                 break;
2757         }
2758
2759         mutex_unlock(&dsp->pwr_lock);
2760
2761         return ret;
2762 }
2763 EXPORT_SYMBOL_GPL(wm_adsp_compr_trigger);
2764
2765 static inline int wm_adsp_buffer_size(struct wm_adsp_compr_buf *buf)
2766 {
2767         int last_region = wm_adsp_fw[buf->dsp->fw].caps->num_regions - 1;
2768
2769         return buf->regions[last_region].cumulative_size;
2770 }
2771
2772 static int wm_adsp_buffer_update_avail(struct wm_adsp_compr_buf *buf)
2773 {
2774         u32 next_read_index, next_write_index;
2775         int write_index, read_index, avail;
2776         int ret;
2777
2778         /* Only sync read index if we haven't already read a valid index */
2779         if (buf->read_index < 0) {
2780                 ret = wm_adsp_buffer_read(buf,
2781                                 HOST_BUFFER_FIELD(next_read_index),
2782                                 &next_read_index);
2783                 if (ret < 0)
2784                         return ret;
2785
2786                 read_index = sign_extend32(next_read_index, 23);
2787
2788                 if (read_index < 0) {
2789                         adsp_dbg(buf->dsp, "Avail check on unstarted stream\n");
2790                         return 0;
2791                 }
2792
2793                 buf->read_index = read_index;
2794         }
2795
2796         ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(next_write_index),
2797                         &next_write_index);
2798         if (ret < 0)
2799                 return ret;
2800
2801         write_index = sign_extend32(next_write_index, 23);
2802
2803         avail = write_index - buf->read_index;
2804         if (avail < 0)
2805                 avail += wm_adsp_buffer_size(buf);
2806
2807         adsp_dbg(buf->dsp, "readindex=0x%x, writeindex=0x%x, avail=%d\n",
2808                  buf->read_index, write_index, avail);
2809
2810         buf->avail = avail;
2811
2812         return 0;
2813 }
2814
2815 int wm_adsp_compr_handle_irq(struct wm_adsp *dsp)
2816 {
2817         struct wm_adsp_compr_buf *buf = dsp->buffer;
2818         struct wm_adsp_compr *compr = dsp->compr;
2819         int ret = 0;
2820
2821         mutex_lock(&dsp->pwr_lock);
2822
2823         if (!buf) {
2824                 ret = -ENODEV;
2825                 goto out;
2826         }
2827
2828         adsp_dbg(dsp, "Handling buffer IRQ\n");
2829
2830         ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(error), &buf->error);
2831         if (ret < 0) {
2832                 adsp_err(dsp, "Failed to check buffer error: %d\n", ret);
2833                 goto out;
2834         }
2835         if (buf->error != 0) {
2836                 adsp_err(dsp, "Buffer error occurred: %d\n", buf->error);
2837                 ret = -EIO;
2838                 goto out;
2839         }
2840
2841         ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(irq_count),
2842                                   &buf->irq_count);
2843         if (ret < 0) {
2844                 adsp_err(dsp, "Failed to get irq_count: %d\n", ret);
2845                 goto out;
2846         }
2847
2848         ret = wm_adsp_buffer_update_avail(buf);
2849         if (ret < 0) {
2850                 adsp_err(dsp, "Error reading avail: %d\n", ret);
2851                 goto out;
2852         }
2853
2854         if (compr && compr->stream)
2855                 snd_compr_fragment_elapsed(compr->stream);
2856
2857 out:
2858         mutex_unlock(&dsp->pwr_lock);
2859
2860         return ret;
2861 }
2862 EXPORT_SYMBOL_GPL(wm_adsp_compr_handle_irq);
2863
2864 static int wm_adsp_buffer_reenable_irq(struct wm_adsp_compr_buf *buf)
2865 {
2866         if (buf->irq_count & 0x01)
2867                 return 0;
2868
2869         adsp_dbg(buf->dsp, "Enable IRQ(0x%x) for next fragment\n",
2870                  buf->irq_count);
2871
2872         buf->irq_count |= 0x01;
2873
2874         return wm_adsp_buffer_write(buf, HOST_BUFFER_FIELD(irq_ack),
2875                                     buf->irq_count);
2876 }
2877
2878 int wm_adsp_compr_pointer(struct snd_compr_stream *stream,
2879                           struct snd_compr_tstamp *tstamp)
2880 {
2881         struct wm_adsp_compr *compr = stream->runtime->private_data;
2882         struct wm_adsp_compr_buf *buf = compr->buf;
2883         struct wm_adsp *dsp = compr->dsp;
2884         int ret = 0;
2885
2886         adsp_dbg(dsp, "Pointer request\n");
2887
2888         mutex_lock(&dsp->pwr_lock);
2889
2890         if (!compr->buf) {
2891                 ret = -ENXIO;
2892                 goto out;
2893         }
2894
2895         if (compr->buf->error) {
2896                 ret = -EIO;
2897                 goto out;
2898         }
2899
2900         if (buf->avail < wm_adsp_compr_frag_words(compr)) {
2901                 ret = wm_adsp_buffer_update_avail(buf);
2902                 if (ret < 0) {
2903                         adsp_err(dsp, "Error reading avail: %d\n", ret);
2904                         goto out;
2905                 }
2906
2907                 /*
2908                  * If we really have less than 1 fragment available tell the
2909                  * DSP to inform us once a whole fragment is available.
2910                  */
2911                 if (buf->avail < wm_adsp_compr_frag_words(compr)) {
2912                         ret = wm_adsp_buffer_reenable_irq(buf);
2913                         if (ret < 0) {
2914                                 adsp_err(dsp,
2915                                          "Failed to re-enable buffer IRQ: %d\n",
2916                                          ret);
2917                                 goto out;
2918                         }
2919                 }
2920         }
2921
2922         tstamp->copied_total = compr->copied_total;
2923         tstamp->copied_total += buf->avail * WM_ADSP_DATA_WORD_SIZE;
2924         tstamp->sampling_rate = compr->sample_rate;
2925
2926 out:
2927         mutex_unlock(&dsp->pwr_lock);
2928
2929         return ret;
2930 }
2931 EXPORT_SYMBOL_GPL(wm_adsp_compr_pointer);
2932
2933 static int wm_adsp_buffer_capture_block(struct wm_adsp_compr *compr, int target)
2934 {
2935         struct wm_adsp_compr_buf *buf = compr->buf;
2936         u8 *pack_in = (u8 *)compr->raw_buf;
2937         u8 *pack_out = (u8 *)compr->raw_buf;
2938         unsigned int adsp_addr;
2939         int mem_type, nwords, max_read;
2940         int i, j, ret;
2941
2942         /* Calculate read parameters */
2943         for (i = 0; i < wm_adsp_fw[buf->dsp->fw].caps->num_regions; ++i)
2944                 if (buf->read_index < buf->regions[i].cumulative_size)
2945                         break;
2946
2947         if (i == wm_adsp_fw[buf->dsp->fw].caps->num_regions)
2948                 return -EINVAL;
2949
2950         mem_type = buf->regions[i].mem_type;
2951         adsp_addr = buf->regions[i].base_addr +
2952                     (buf->read_index - buf->regions[i].offset);
2953
2954         max_read = wm_adsp_compr_frag_words(compr);
2955         nwords = buf->regions[i].cumulative_size - buf->read_index;
2956
2957         if (nwords > target)
2958                 nwords = target;
2959         if (nwords > buf->avail)
2960                 nwords = buf->avail;
2961         if (nwords > max_read)
2962                 nwords = max_read;
2963         if (!nwords)
2964                 return 0;
2965
2966         /* Read data from DSP */
2967         ret = wm_adsp_read_data_block(buf->dsp, mem_type, adsp_addr,
2968                                       nwords, compr->raw_buf);
2969         if (ret < 0)
2970                 return ret;
2971
2972         /* Remove the padding bytes from the data read from the DSP */
2973         for (i = 0; i < nwords; i++) {
2974                 for (j = 0; j < WM_ADSP_DATA_WORD_SIZE; j++)
2975                         *pack_out++ = *pack_in++;
2976
2977                 pack_in += sizeof(*(compr->raw_buf)) - WM_ADSP_DATA_WORD_SIZE;
2978         }
2979
2980         /* update read index to account for words read */
2981         buf->read_index += nwords;
2982         if (buf->read_index == wm_adsp_buffer_size(buf))
2983                 buf->read_index = 0;
2984
2985         ret = wm_adsp_buffer_write(buf, HOST_BUFFER_FIELD(next_read_index),
2986                                    buf->read_index);
2987         if (ret < 0)
2988                 return ret;
2989
2990         /* update avail to account for words read */
2991         buf->avail -= nwords;
2992
2993         return nwords;
2994 }
2995
2996 static int wm_adsp_compr_read(struct wm_adsp_compr *compr,
2997                               char __user *buf, size_t count)
2998 {
2999         struct wm_adsp *dsp = compr->dsp;
3000         int ntotal = 0;
3001         int nwords, nbytes;
3002
3003         adsp_dbg(dsp, "Requested read of %zu bytes\n", count);
3004
3005         if (!compr->buf)
3006                 return -ENXIO;
3007
3008         if (compr->buf->error)
3009                 return -EIO;
3010
3011         count /= WM_ADSP_DATA_WORD_SIZE;
3012
3013         do {
3014                 nwords = wm_adsp_buffer_capture_block(compr, count);
3015                 if (nwords < 0) {
3016                         adsp_err(dsp, "Failed to capture block: %d\n", nwords);
3017                         return nwords;
3018                 }
3019
3020                 nbytes = nwords * WM_ADSP_DATA_WORD_SIZE;
3021
3022                 adsp_dbg(dsp, "Read %d bytes\n", nbytes);
3023
3024                 if (copy_to_user(buf + ntotal, compr->raw_buf, nbytes)) {
3025                         adsp_err(dsp, "Failed to copy data to user: %d, %d\n",
3026                                  ntotal, nbytes);
3027                         return -EFAULT;
3028                 }
3029
3030                 count -= nwords;
3031                 ntotal += nbytes;
3032         } while (nwords > 0 && count > 0);
3033
3034         compr->copied_total += ntotal;
3035
3036         return ntotal;
3037 }
3038
3039 int wm_adsp_compr_copy(struct snd_compr_stream *stream, char __user *buf,
3040                        size_t count)
3041 {
3042         struct wm_adsp_compr *compr = stream->runtime->private_data;
3043         struct wm_adsp *dsp = compr->dsp;
3044         int ret;
3045
3046         mutex_lock(&dsp->pwr_lock);
3047
3048         if (stream->direction == SND_COMPRESS_CAPTURE)
3049                 ret = wm_adsp_compr_read(compr, buf, count);
3050         else
3051                 ret = -ENOTSUPP;
3052
3053         mutex_unlock(&dsp->pwr_lock);
3054
3055         return ret;
3056 }
3057 EXPORT_SYMBOL_GPL(wm_adsp_compr_copy);
3058
3059 MODULE_LICENSE("GPL v2");