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