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