include/sound/hdaudio.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * HD-audio core stuff
   4  */
   5
   6 #ifndef __SOUND_HDAUDIO_H
   7 #define __SOUND_HDAUDIO_H
   8
   9 #include <linux/device.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/io.h>
  12 #include <linux/pm_runtime.h>
  13 #include <linux/timecounter.h>
  14 #include <sound/core.h>
  15 #include <sound/pcm.h>
  16 #include <sound/memalloc.h>
  17 #include <sound/hda_verbs.h>
  18 #include <drm/i915_component.h>
  19
  20 /* codec node id */
  21 typedef u16 hda_nid_t;
  22
  23 struct hdac_bus;
  24 struct hdac_stream;
  25 struct hdac_device;
  26 struct hdac_driver;
  27 struct hdac_widget_tree;
  28 struct hda_device_id;
  29
  30 /*
  31  * exported bus type
  32  */
  33 extern struct bus_type snd_hda_bus_type;
  34
  35 /*
  36  * generic arrays
  37  */
  38 struct snd_array {
  39         unsigned int used;
  40         unsigned int alloced;
  41         unsigned int elem_size;
  42         unsigned int alloc_align;
  43         void *list;
  44 };
  45
  46 /*
  47  * HD-audio codec base device
  48  */
  49 struct hdac_device {
  50         struct device dev;
  51         int type;
  52         struct hdac_bus *bus;
  53         unsigned int addr;              /* codec address */
  54         struct list_head list;          /* list point for bus codec_list */
  55
  56         hda_nid_t afg;                  /* AFG node id */
  57         hda_nid_t mfg;                  /* MFG node id */
  58
  59         /* ids */
  60         unsigned int vendor_id;
  61         unsigned int subsystem_id;
  62         unsigned int revision_id;
  63         unsigned int afg_function_id;
  64         unsigned int mfg_function_id;
  65         unsigned int afg_unsol:1;
  66         unsigned int mfg_unsol:1;
  67
  68         unsigned int power_caps;        /* FG power caps */
  69
  70         const char *vendor_name;        /* codec vendor name */
  71         const char *chip_name;          /* codec chip name */
  72
  73         /* verb exec op override */
  74         int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
  75                          unsigned int flags, unsigned int *res);
  76
  77         /* widgets */
  78         unsigned int num_nodes;
  79         hda_nid_t start_nid, end_nid;
  80
  81         /* misc flags */
  82         atomic_t in_pm;         /* suspend/resume being performed */
  83
  84         /* sysfs */
  85         struct mutex widget_lock;
  86         struct hdac_widget_tree *widgets;
  87
  88         /* regmap */
  89         struct regmap *regmap;
  90         struct mutex regmap_lock;
  91         struct snd_array vendor_verbs;
  92         bool lazy_cache:1;      /* don't wake up for writes */
  93         bool caps_overwriting:1; /* caps overwrite being in process */
  94         bool cache_coef:1;      /* cache COEF read/write too */
  95 };
  96
  97 /* device/driver type used for matching */
  98 enum {
  99         HDA_DEV_CORE,
 100         HDA_DEV_LEGACY,
 101         HDA_DEV_ASOC,
 102 };
 103
 104 enum {
 105         SND_SKL_PCI_BIND_AUTO,  /* automatic selection based on pci class */
 106         SND_SKL_PCI_BIND_LEGACY,/* bind only with legacy driver */
 107         SND_SKL_PCI_BIND_ASOC   /* bind only with ASoC driver */
 108 };
 109
 110 /* direction */
 111 enum {
 112         HDA_INPUT, HDA_OUTPUT
 113 };
 114
 115 #define dev_to_hdac_dev(_dev)   container_of(_dev, struct hdac_device, dev)
 116
 117 int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
 118                          const char *name, unsigned int addr);
 119 void snd_hdac_device_exit(struct hdac_device *dev);
 120 int snd_hdac_device_register(struct hdac_device *codec);
 121 void snd_hdac_device_unregister(struct hdac_device *codec);
 122 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name);
 123 int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size);
 124
 125 int snd_hdac_refresh_widgets(struct hdac_device *codec);
 126
 127 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
 128                   unsigned int verb, unsigned int parm, unsigned int *res);
 129 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
 130                         unsigned int *res);
 131 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
 132                                 int parm);
 133 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
 134                            unsigned int parm, unsigned int val);
 135 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
 136                              hda_nid_t *conn_list, int max_conns);
 137 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
 138                            hda_nid_t *start_id);
 139 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
 140                                          unsigned int channels,
 141                                          snd_pcm_format_t format,
 142                                          unsigned int maxbps,
 143                                          unsigned short spdif_ctls);
 144 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
 145                                 u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
 146 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
 147                                   unsigned int format);
 148
 149 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
 150                         int flags, unsigned int verb, unsigned int parm);
 151 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
 152                         int flags, unsigned int verb, unsigned int parm);
 153 bool snd_hdac_check_power_state(struct hdac_device *hdac,
 154                 hda_nid_t nid, unsigned int target_state);
 155 unsigned int snd_hdac_sync_power_state(struct hdac_device *hdac,
 156                       hda_nid_t nid, unsigned int target_state);
 157 /**
 158  * snd_hdac_read_parm - read a codec parameter
 159  * @codec: the codec object
 160  * @nid: NID to read a parameter
 161  * @parm: parameter to read
 162  *
 163  * Returns -1 for error.  If you need to distinguish the error more
 164  * strictly, use _snd_hdac_read_parm() directly.
 165  */
 166 static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
 167                                      int parm)
 168 {
 169         unsigned int val;
 170
 171         return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
 172 }
 173
 174 #ifdef CONFIG_PM
 175 int snd_hdac_power_up(struct hdac_device *codec);
 176 int snd_hdac_power_down(struct hdac_device *codec);
 177 int snd_hdac_power_up_pm(struct hdac_device *codec);
 178 int snd_hdac_power_down_pm(struct hdac_device *codec);
 179 int snd_hdac_keep_power_up(struct hdac_device *codec);
 180
 181 /* call this at entering into suspend/resume callbacks in codec driver */
 182 static inline void snd_hdac_enter_pm(struct hdac_device *codec)
 183 {
 184         atomic_inc(&codec->in_pm);
 185 }
 186
 187 /* call this at leaving from suspend/resume callbacks in codec driver */
 188 static inline void snd_hdac_leave_pm(struct hdac_device *codec)
 189 {
 190         atomic_dec(&codec->in_pm);
 191 }
 192
 193 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec)
 194 {
 195         return atomic_read(&codec->in_pm);
 196 }
 197
 198 static inline bool snd_hdac_is_power_on(struct hdac_device *codec)
 199 {
 200         return !pm_runtime_suspended(&codec->dev);
 201 }
 202 #else
 203 static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
 204 static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
 205 static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
 206 static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
 207 static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; }
 208 static inline void snd_hdac_enter_pm(struct hdac_device *codec) {}
 209 static inline void snd_hdac_leave_pm(struct hdac_device *codec) {}
 210 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) { return false; }
 211 static inline bool snd_hdac_is_power_on(struct hdac_device *codec) { return true; }
 212 #endif
 213
 214 /*
 215  * HD-audio codec base driver
 216  */
 217 struct hdac_driver {
 218         struct device_driver driver;
 219         int type;
 220         const struct hda_device_id *id_table;
 221         int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
 222         void (*unsol_event)(struct hdac_device *dev, unsigned int event);
 223
 224         /* fields used by ext bus APIs */
 225         int (*probe)(struct hdac_device *dev);
 226         int (*remove)(struct hdac_device *dev);
 227         void (*shutdown)(struct hdac_device *dev);
 228 };
 229
 230 #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
 231
 232 const struct hda_device_id *
 233 hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);
 234
 235 /*
 236  * Bus verb operators
 237  */
 238 struct hdac_bus_ops {
 239         /* send a single command */
 240         int (*command)(struct hdac_bus *bus, unsigned int cmd);
 241         /* get a response from the last command */
 242         int (*get_response)(struct hdac_bus *bus, unsigned int addr,
 243                             unsigned int *res);
 244         /* notify of codec link power-up/down */
 245         void (*link_power)(struct hdac_device *hdev, bool enable);
 246 };
 247
 248 /*
 249  * ops used for ASoC HDA codec drivers
 250  */
 251 struct hdac_ext_bus_ops {
 252         int (*hdev_attach)(struct hdac_device *hdev);
 253         int (*hdev_detach)(struct hdac_device *hdev);
 254 };
 255
 256 #define HDA_UNSOL_QUEUE_SIZE    64
 257 #define HDA_MAX_CODECS          8       /* limit by controller side */
 258
 259 /*
 260  * CORB/RIRB
 261  *
 262  * Each CORB entry is 4byte, RIRB is 8byte
 263  */
 264 struct hdac_rb {
 265         __le32 *buf;            /* virtual address of CORB/RIRB buffer */
 266         dma_addr_t addr;        /* physical address of CORB/RIRB buffer */
 267         unsigned short rp, wp;  /* RIRB read/write pointers */
 268         int cmds[HDA_MAX_CODECS];       /* number of pending requests */
 269         u32 res[HDA_MAX_CODECS];        /* last read value */
 270 };
 271
 272 /*
 273  * HD-audio bus base driver
 274  *
 275  * @ppcap: pp capabilities pointer
 276  * @spbcap: SPIB capabilities pointer
 277  * @mlcap: MultiLink capabilities pointer
 278  * @gtscap: gts capabilities pointer
 279  * @drsmcap: dma resume capabilities pointer
 280  * @num_streams: streams supported
 281  * @idx: HDA link index
 282  * @hlink_list: link list of HDA links
 283  * @lock: lock for link and display power mgmt
 284  * @cmd_dma_state: state of cmd DMAs: CORB and RIRB
 285  */
 286 struct hdac_bus {
 287         struct device *dev;
 288         const struct hdac_bus_ops *ops;
 289         const struct hdac_ext_bus_ops *ext_ops;
 290
 291         /* h/w resources */
 292         unsigned long addr;
 293         void __iomem *remap_addr;
 294         int irq;
 295
 296         void __iomem *ppcap;
 297         void __iomem *spbcap;
 298         void __iomem *mlcap;
 299         void __iomem *gtscap;
 300         void __iomem *drsmcap;
 301
 302         /* codec linked list */
 303         struct list_head codec_list;
 304         unsigned int num_codecs;
 305
 306         /* link caddr -> codec */
 307         struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
 308
 309         /* unsolicited event queue */
 310         u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
 311         unsigned int unsol_rp, unsol_wp;
 312         struct work_struct unsol_work;
 313
 314         /* bit flags of detected codecs */
 315         unsigned long codec_mask;
 316
 317         /* bit flags of powered codecs */
 318         unsigned long codec_powered;
 319
 320         /* CORB/RIRB */
 321         struct hdac_rb corb;
 322         struct hdac_rb rirb;
 323         unsigned int last_cmd[HDA_MAX_CODECS];  /* last sent command */
 324         wait_queue_head_t rirb_wq;
 325
 326         /* CORB/RIRB and position buffers */
 327         struct snd_dma_buffer rb;
 328         struct snd_dma_buffer posbuf;
 329         int dma_type;                   /* SNDRV_DMA_TYPE_XXX for CORB/RIRB */
 330
 331         /* hdac_stream linked list */
 332         struct list_head stream_list;
 333
 334         /* operation state */
 335         bool chip_init:1;               /* h/w initialized */
 336
 337         /* behavior flags */
 338         bool aligned_mmio:1;            /* aligned MMIO access */
 339         bool sync_write:1;              /* sync after verb write */
 340         bool use_posbuf:1;              /* use position buffer */
 341         bool snoop:1;                   /* enable snooping */
 342         bool align_bdle_4k:1;           /* BDLE align 4K boundary */
 343         bool reverse_assign:1;          /* assign devices in reverse order */
 344         bool corbrp_self_clear:1;       /* CORBRP clears itself after reset */
 345         bool polling_mode:1;
 346         bool needs_damn_long_delay:1;
 347
 348         int poll_count;
 349
 350         int bdl_pos_adj;                /* BDL position adjustment */
 351
 352         /* delay time in us for dma stop */
 353         unsigned int dma_stop_delay;
 354
 355         /* locks */
 356         spinlock_t reg_lock;
 357         struct mutex cmd_mutex;
 358         struct mutex lock;
 359
 360         /* DRM component interface */
 361         struct drm_audio_component *audio_component;
 362         long display_power_status;
 363         unsigned long display_power_active;
 364
 365         /* parameters required for enhanced capabilities */
 366         int num_streams;
 367         int idx;
 368
 369         /* link management */
 370         struct list_head hlink_list;
 371         bool cmd_dma_state;
 372
 373         /* factor used to derive STRIPE control value */
 374         unsigned int sdo_limit;
 375 };
 376
 377 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
 378                       const struct hdac_bus_ops *ops);
 379 void snd_hdac_bus_exit(struct hdac_bus *bus);
 380 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
 381                                     unsigned int cmd, unsigned int *res);
 382
 383 void snd_hdac_codec_link_up(struct hdac_device *codec);
 384 void snd_hdac_codec_link_down(struct hdac_device *codec);
 385
 386 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
 387 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
 388                               unsigned int *res);
 389 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus);
 390
 391 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
 392 void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
 393 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
 394 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
 395 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
 396 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
 397 int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset);
 398 void snd_hdac_bus_link_power(struct hdac_device *hdev, bool enable);
 399
 400 void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
 401 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
 402                                     void (*ack)(struct hdac_bus *,
 403                                                 struct hdac_stream *));
 404
 405 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus);
 406 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);
 407
 408 #ifdef CONFIG_SND_HDA_ALIGNED_MMIO
 409 unsigned int snd_hdac_aligned_read(void __iomem *addr, unsigned int mask);
 410 void snd_hdac_aligned_write(unsigned int val, void __iomem *addr,
 411                             unsigned int mask);
 412 #define snd_hdac_aligned_mmio(bus)      (bus)->aligned_mmio
 413 #else
 414 #define snd_hdac_aligned_mmio(bus)      false
 415 #define snd_hdac_aligned_read(addr, mask)       0
 416 #define snd_hdac_aligned_write(val, addr, mask) do {} while (0)
 417 #endif
 418
 419 static inline void snd_hdac_reg_writeb(struct hdac_bus *bus, void __iomem *addr,
 420                                        u8 val)
 421 {
 422         if (snd_hdac_aligned_mmio(bus))
 423                 snd_hdac_aligned_write(val, addr, 0xff);
 424         else
 425                 writeb(val, addr);
 426 }
 427
 428 static inline void snd_hdac_reg_writew(struct hdac_bus *bus, void __iomem *addr,
 429                                        u16 val)
 430 {
 431         if (snd_hdac_aligned_mmio(bus))
 432                 snd_hdac_aligned_write(val, addr, 0xffff);
 433         else
 434                 writew(val, addr);
 435 }
 436
 437 static inline u8 snd_hdac_reg_readb(struct hdac_bus *bus, void __iomem *addr)
 438 {
 439         return snd_hdac_aligned_mmio(bus) ?
 440                 snd_hdac_aligned_read(addr, 0xff) : readb(addr);
 441 }
 442
 443 static inline u16 snd_hdac_reg_readw(struct hdac_bus *bus, void __iomem *addr)
 444 {
 445         return snd_hdac_aligned_mmio(bus) ?
 446                 snd_hdac_aligned_read(addr, 0xffff) : readw(addr);
 447 }
 448
 449 #define snd_hdac_reg_writel(bus, addr, val)     writel(val, addr)
 450 #define snd_hdac_reg_readl(bus, addr)   readl(addr)
 451
 452 /*
 453  * macros for easy use
 454  */
 455 #define _snd_hdac_chip_writeb(chip, reg, value) \
 456         snd_hdac_reg_writeb(chip, (chip)->remap_addr + (reg), value)
 457 #define _snd_hdac_chip_readb(chip, reg) \
 458         snd_hdac_reg_readb(chip, (chip)->remap_addr + (reg))
 459 #define _snd_hdac_chip_writew(chip, reg, value) \
 460         snd_hdac_reg_writew(chip, (chip)->remap_addr + (reg), value)
 461 #define _snd_hdac_chip_readw(chip, reg) \
 462         snd_hdac_reg_readw(chip, (chip)->remap_addr + (reg))
 463 #define _snd_hdac_chip_writel(chip, reg, value) \
 464         snd_hdac_reg_writel(chip, (chip)->remap_addr + (reg), value)
 465 #define _snd_hdac_chip_readl(chip, reg) \
 466         snd_hdac_reg_readl(chip, (chip)->remap_addr + (reg))
 467
 468 /* read/write a register, pass without AZX_REG_ prefix */
 469 #define snd_hdac_chip_writel(chip, reg, value) \
 470         _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value)
 471 #define snd_hdac_chip_writew(chip, reg, value) \
 472         _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value)
 473 #define snd_hdac_chip_writeb(chip, reg, value) \
 474         _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value)
 475 #define snd_hdac_chip_readl(chip, reg) \
 476         _snd_hdac_chip_readl(chip, AZX_REG_ ## reg)
 477 #define snd_hdac_chip_readw(chip, reg) \
 478         _snd_hdac_chip_readw(chip, AZX_REG_ ## reg)
 479 #define snd_hdac_chip_readb(chip, reg) \
 480         _snd_hdac_chip_readb(chip, AZX_REG_ ## reg)
 481
 482 /* update a register, pass without AZX_REG_ prefix */
 483 #define snd_hdac_chip_updatel(chip, reg, mask, val) \
 484         snd_hdac_chip_writel(chip, reg, \
 485                              (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val))
 486 #define snd_hdac_chip_updatew(chip, reg, mask, val) \
 487         snd_hdac_chip_writew(chip, reg, \
 488                              (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val))
 489 #define snd_hdac_chip_updateb(chip, reg, mask, val) \
 490         snd_hdac_chip_writeb(chip, reg, \
 491                              (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val))
 492
 493 /*
 494  * HD-audio stream
 495  */
 496 struct hdac_stream {
 497         struct hdac_bus *bus;
 498         struct snd_dma_buffer bdl; /* BDL buffer */
 499         __le32 *posbuf;         /* position buffer pointer */
 500         int direction;          /* playback / capture (SNDRV_PCM_STREAM_*) */
 501
 502         unsigned int bufsize;   /* size of the play buffer in bytes */
 503         unsigned int period_bytes; /* size of the period in bytes */
 504         unsigned int frags;     /* number for period in the play buffer */
 505         unsigned int fifo_size; /* FIFO size */
 506
 507         void __iomem *sd_addr;  /* stream descriptor pointer */
 508
 509         u32 sd_int_sta_mask;    /* stream int status mask */
 510
 511         /* pcm support */
 512         struct snd_pcm_substream *substream;    /* assigned substream,
 513                                                  * set in PCM open
 514                                                  */
 515         struct snd_compr_stream *cstream;
 516         unsigned int format_val;        /* format value to be set in the
 517                                          * controller and the codec
 518                                          */
 519         unsigned char stream_tag;       /* assigned stream */
 520         unsigned char index;            /* stream index */
 521         int assigned_key;               /* last device# key assigned to */
 522
 523         bool opened:1;
 524         bool running:1;
 525         bool prepared:1;
 526         bool no_period_wakeup:1;
 527         bool locked:1;
 528         bool stripe:1;                  /* apply stripe control */
 529
 530         u64 curr_pos;
 531         /* timestamp */
 532         unsigned long start_wallclk;    /* start + minimum wallclk */
 533         unsigned long period_wallclk;   /* wallclk for period */
 534         struct timecounter  tc;
 535         struct cyclecounter cc;
 536         int delay_negative_threshold;
 537
 538         struct list_head list;
 539 #ifdef CONFIG_SND_HDA_DSP_LOADER
 540         /* DSP access mutex */
 541         struct mutex dsp_mutex;
 542 #endif
 543 };
 544
 545 void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
 546                           int idx, int direction, int tag);
 547 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
 548                                            struct snd_pcm_substream *substream);
 549 void snd_hdac_stream_release(struct hdac_stream *azx_dev);
 550 struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
 551                                         int dir, int stream_tag);
 552
 553 int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
 554 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
 555 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
 556 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
 557                                 unsigned int format_val);
 558 void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start);
 559 void snd_hdac_stream_clear(struct hdac_stream *azx_dev);
 560 void snd_hdac_stream_stop(struct hdac_stream *azx_dev);
 561 void snd_hdac_stream_reset(struct hdac_stream *azx_dev);
 562 void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
 563                                   unsigned int streams, unsigned int reg);
 564 void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
 565                           unsigned int streams);
 566 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
 567                                       unsigned int streams);
 568 int snd_hdac_get_stream_stripe_ctl(struct hdac_bus *bus,
 569                                 struct snd_pcm_substream *substream);
 570
 571 /*
 572  * macros for easy use
 573  */
 574 /* read/write a register, pass without AZX_REG_ prefix */
 575 #define snd_hdac_stream_writel(dev, reg, value) \
 576         snd_hdac_reg_writel((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
 577 #define snd_hdac_stream_writew(dev, reg, value) \
 578         snd_hdac_reg_writew((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
 579 #define snd_hdac_stream_writeb(dev, reg, value) \
 580         snd_hdac_reg_writeb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
 581 #define snd_hdac_stream_readl(dev, reg) \
 582         snd_hdac_reg_readl((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
 583 #define snd_hdac_stream_readw(dev, reg) \
 584         snd_hdac_reg_readw((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
 585 #define snd_hdac_stream_readb(dev, reg) \
 586         snd_hdac_reg_readb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
 587
 588 /* update a register, pass without AZX_REG_ prefix */
 589 #define snd_hdac_stream_updatel(dev, reg, mask, val) \
 590         snd_hdac_stream_writel(dev, reg, \
 591                                (snd_hdac_stream_readl(dev, reg) & \
 592                                 ~(mask)) | (val))
 593 #define snd_hdac_stream_updatew(dev, reg, mask, val) \
 594         snd_hdac_stream_writew(dev, reg, \
 595                                (snd_hdac_stream_readw(dev, reg) & \
 596                                 ~(mask)) | (val))
 597 #define snd_hdac_stream_updateb(dev, reg, mask, val) \
 598         snd_hdac_stream_writeb(dev, reg, \
 599                                (snd_hdac_stream_readb(dev, reg) & \
 600                                 ~(mask)) | (val))
 601
 602 #ifdef CONFIG_SND_HDA_DSP_LOADER
 603 /* DSP lock helpers */
 604 #define snd_hdac_dsp_lock_init(dev)     mutex_init(&(dev)->dsp_mutex)
 605 #define snd_hdac_dsp_lock(dev)          mutex_lock(&(dev)->dsp_mutex)
 606 #define snd_hdac_dsp_unlock(dev)        mutex_unlock(&(dev)->dsp_mutex)
 607 #define snd_hdac_stream_is_locked(dev)  ((dev)->locked)
 608 /* DSP loader helpers */
 609 int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
 610                          unsigned int byte_size, struct snd_dma_buffer *bufp);
 611 void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
 612 void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
 613                           struct snd_dma_buffer *dmab);
 614 #else /* CONFIG_SND_HDA_DSP_LOADER */
 615 #define snd_hdac_dsp_lock_init(dev)     do {} while (0)
 616 #define snd_hdac_dsp_lock(dev)          do {} while (0)
 617 #define snd_hdac_dsp_unlock(dev)        do {} while (0)
 618 #define snd_hdac_stream_is_locked(dev)  0
 619
 620 static inline int
 621 snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
 622                      unsigned int byte_size, struct snd_dma_buffer *bufp)
 623 {
 624         return 0;
 625 }
 626
 627 static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
 628 {
 629 }
 630
 631 static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
 632                                         struct snd_dma_buffer *dmab)
 633 {
 634 }
 635 #endif /* CONFIG_SND_HDA_DSP_LOADER */
 636
 637
 638 /*
 639  * generic array helpers
 640  */
 641 void *snd_array_new(struct snd_array *array);
 642 void snd_array_free(struct snd_array *array);
 643 static inline void snd_array_init(struct snd_array *array, unsigned int size,
 644                                   unsigned int align)
 645 {
 646         array->elem_size = size;
 647         array->alloc_align = align;
 648 }
 649
 650 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
 651 {
 652         return array->list + idx * array->elem_size;
 653 }
 654
 655 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
 656 {
 657         return (unsigned long)(ptr - array->list) / array->elem_size;
 658 }
 659
 660 /* a helper macro to iterate for each snd_array element */
 661 #define snd_array_for_each(array, idx, ptr) \
 662         for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \
 663              (ptr) = snd_array_elem(array, ++(idx)))
 664
 665 #endif /* __SOUND_HDAUDIO_H */