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 }; 245 246 /* 247 * ops used for ASoC HDA codec drivers 248 */ 249 struct hdac_ext_bus_ops { 250 int (*hdev_attach)(struct hdac_device *hdev); 251 int (*hdev_detach)(struct hdac_device *hdev); 252 }; 253 254 #define HDA_UNSOL_QUEUE_SIZE 64 255 #define HDA_MAX_CODECS 8 /* limit by controller side */ 256 257 /* 258 * CORB/RIRB 259 * 260 * Each CORB entry is 4byte, RIRB is 8byte 261 */ 262 struct hdac_rb { 263 __le32 *buf; /* virtual address of CORB/RIRB buffer */ 264 dma_addr_t addr; /* physical address of CORB/RIRB buffer */ 265 unsigned short rp, wp; /* RIRB read/write pointers */ 266 int cmds[HDA_MAX_CODECS]; /* number of pending requests */ 267 u32 res[HDA_MAX_CODECS]; /* last read value */ 268 }; 269 270 /* 271 * HD-audio bus base driver 272 * 273 * @ppcap: pp capabilities pointer 274 * @spbcap: SPIB capabilities pointer 275 * @mlcap: MultiLink capabilities pointer 276 * @gtscap: gts capabilities pointer 277 * @drsmcap: dma resume capabilities pointer 278 * @num_streams: streams supported 279 * @idx: HDA link index 280 * @hlink_list: link list of HDA links 281 * @lock: lock for link and display power mgmt 282 * @cmd_dma_state: state of cmd DMAs: CORB and RIRB 283 */ 284 struct hdac_bus { 285 struct device *dev; 286 const struct hdac_bus_ops *ops; 287 const struct hdac_ext_bus_ops *ext_ops; 288 289 /* h/w resources */ 290 unsigned long addr; 291 void __iomem *remap_addr; 292 int irq; 293 294 void __iomem *ppcap; 295 void __iomem *spbcap; 296 void __iomem *mlcap; 297 void __iomem *gtscap; 298 void __iomem *drsmcap; 299 300 /* codec linked list */ 301 struct list_head codec_list; 302 unsigned int num_codecs; 303 304 /* link caddr -> codec */ 305 struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1]; 306 307 /* unsolicited event queue */ 308 u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */ 309 unsigned int unsol_rp, unsol_wp; 310 struct work_struct unsol_work; 311 312 /* bit flags of detected codecs */ 313 unsigned long codec_mask; 314 315 /* bit flags of powered codecs */ 316 unsigned long codec_powered; 317 318 /* CORB/RIRB */ 319 struct hdac_rb corb; 320 struct hdac_rb rirb; 321 unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */ 322 wait_queue_head_t rirb_wq; 323 324 /* CORB/RIRB and position buffers */ 325 struct snd_dma_buffer rb; 326 struct snd_dma_buffer posbuf; 327 int dma_type; /* SNDRV_DMA_TYPE_XXX for CORB/RIRB */ 328 329 /* hdac_stream linked list */ 330 struct list_head stream_list; 331 332 /* operation state */ 333 bool chip_init:1; /* h/w initialized */ 334 335 /* behavior flags */ 336 bool aligned_mmio:1; /* aligned MMIO access */ 337 bool sync_write:1; /* sync after verb write */ 338 bool use_posbuf:1; /* use position buffer */ 339 bool snoop:1; /* enable snooping */ 340 bool align_bdle_4k:1; /* BDLE align 4K boundary */ 341 bool reverse_assign:1; /* assign devices in reverse order */ 342 bool corbrp_self_clear:1; /* CORBRP clears itself after reset */ 343 bool polling_mode:1; 344 bool needs_damn_long_delay:1; 345 346 int poll_count; 347 348 int bdl_pos_adj; /* BDL position adjustment */ 349 350 /* locks */ 351 spinlock_t reg_lock; 352 struct mutex cmd_mutex; 353 struct mutex lock; 354 355 /* DRM component interface */ 356 struct drm_audio_component *audio_component; 357 long display_power_status; 358 unsigned long display_power_active; 359 360 /* parameters required for enhanced capabilities */ 361 int num_streams; 362 int idx; 363 364 /* link management */ 365 struct list_head hlink_list; 366 bool cmd_dma_state; 367 368 /* factor used to derive STRIPE control value */ 369 unsigned int sdo_limit; 370 }; 371 372 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, 373 const struct hdac_bus_ops *ops); 374 void snd_hdac_bus_exit(struct hdac_bus *bus); 375 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr, 376 unsigned int cmd, unsigned int *res); 377 378 static inline void snd_hdac_codec_link_up(struct hdac_device *codec) 379 { 380 set_bit(codec->addr, &codec->bus->codec_powered); 381 } 382 383 static inline void snd_hdac_codec_link_down(struct hdac_device *codec) 384 { 385 clear_bit(codec->addr, &codec->bus->codec_powered); 386 } 387 388 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val); 389 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr, 390 unsigned int *res); 391 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus); 392 393 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset); 394 void snd_hdac_bus_stop_chip(struct hdac_bus *bus); 395 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus); 396 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus); 397 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus); 398 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus); 399 int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset); 400 401 void snd_hdac_bus_update_rirb(struct hdac_bus *bus); 402 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status, 403 void (*ack)(struct hdac_bus *, 404 struct hdac_stream *)); 405 406 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus); 407 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus); 408 409 #ifdef CONFIG_SND_HDA_ALIGNED_MMIO 410 unsigned int snd_hdac_aligned_read(void __iomem *addr, unsigned int mask); 411 void snd_hdac_aligned_write(unsigned int val, void __iomem *addr, 412 unsigned int mask); 413 #define snd_hdac_aligned_mmio(bus) (bus)->aligned_mmio 414 #else 415 #define snd_hdac_aligned_mmio(bus) false 416 #define snd_hdac_aligned_read(addr, mask) 0 417 #define snd_hdac_aligned_write(val, addr, mask) do {} while (0) 418 #endif 419 420 static inline void snd_hdac_reg_writeb(struct hdac_bus *bus, void __iomem *addr, 421 u8 val) 422 { 423 if (snd_hdac_aligned_mmio(bus)) 424 snd_hdac_aligned_write(val, addr, 0xff); 425 else 426 writeb(val, addr); 427 } 428 429 static inline void snd_hdac_reg_writew(struct hdac_bus *bus, void __iomem *addr, 430 u16 val) 431 { 432 if (snd_hdac_aligned_mmio(bus)) 433 snd_hdac_aligned_write(val, addr, 0xffff); 434 else 435 writew(val, addr); 436 } 437 438 static inline u8 snd_hdac_reg_readb(struct hdac_bus *bus, void __iomem *addr) 439 { 440 return snd_hdac_aligned_mmio(bus) ? 441 snd_hdac_aligned_read(addr, 0xff) : readb(addr); 442 } 443 444 static inline u16 snd_hdac_reg_readw(struct hdac_bus *bus, void __iomem *addr) 445 { 446 return snd_hdac_aligned_mmio(bus) ? 447 snd_hdac_aligned_read(addr, 0xffff) : readw(addr); 448 } 449 450 #define snd_hdac_reg_writel(bus, addr, val) writel(val, addr) 451 #define snd_hdac_reg_readl(bus, addr) readl(addr) 452 453 /* 454 * macros for easy use 455 */ 456 #define _snd_hdac_chip_writeb(chip, reg, value) \ 457 snd_hdac_reg_writeb(chip, (chip)->remap_addr + (reg), value) 458 #define _snd_hdac_chip_readb(chip, reg) \ 459 snd_hdac_reg_readb(chip, (chip)->remap_addr + (reg)) 460 #define _snd_hdac_chip_writew(chip, reg, value) \ 461 snd_hdac_reg_writew(chip, (chip)->remap_addr + (reg), value) 462 #define _snd_hdac_chip_readw(chip, reg) \ 463 snd_hdac_reg_readw(chip, (chip)->remap_addr + (reg)) 464 #define _snd_hdac_chip_writel(chip, reg, value) \ 465 snd_hdac_reg_writel(chip, (chip)->remap_addr + (reg), value) 466 #define _snd_hdac_chip_readl(chip, reg) \ 467 snd_hdac_reg_readl(chip, (chip)->remap_addr + (reg)) 468 469 /* read/write a register, pass without AZX_REG_ prefix */ 470 #define snd_hdac_chip_writel(chip, reg, value) \ 471 _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value) 472 #define snd_hdac_chip_writew(chip, reg, value) \ 473 _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value) 474 #define snd_hdac_chip_writeb(chip, reg, value) \ 475 _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value) 476 #define snd_hdac_chip_readl(chip, reg) \ 477 _snd_hdac_chip_readl(chip, AZX_REG_ ## reg) 478 #define snd_hdac_chip_readw(chip, reg) \ 479 _snd_hdac_chip_readw(chip, AZX_REG_ ## reg) 480 #define snd_hdac_chip_readb(chip, reg) \ 481 _snd_hdac_chip_readb(chip, AZX_REG_ ## reg) 482 483 /* update a register, pass without AZX_REG_ prefix */ 484 #define snd_hdac_chip_updatel(chip, reg, mask, val) \ 485 snd_hdac_chip_writel(chip, reg, \ 486 (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val)) 487 #define snd_hdac_chip_updatew(chip, reg, mask, val) \ 488 snd_hdac_chip_writew(chip, reg, \ 489 (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val)) 490 #define snd_hdac_chip_updateb(chip, reg, mask, val) \ 491 snd_hdac_chip_writeb(chip, reg, \ 492 (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val)) 493 494 /* 495 * HD-audio stream 496 */ 497 struct hdac_stream { 498 struct hdac_bus *bus; 499 struct snd_dma_buffer bdl; /* BDL buffer */ 500 __le32 *posbuf; /* position buffer pointer */ 501 int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */ 502 503 unsigned int bufsize; /* size of the play buffer in bytes */ 504 unsigned int period_bytes; /* size of the period in bytes */ 505 unsigned int frags; /* number for period in the play buffer */ 506 unsigned int fifo_size; /* FIFO size */ 507 508 void __iomem *sd_addr; /* stream descriptor pointer */ 509 510 u32 sd_int_sta_mask; /* stream int status mask */ 511 512 /* pcm support */ 513 struct snd_pcm_substream *substream; /* assigned substream, 514 * set in PCM open 515 */ 516 struct snd_compr_stream *cstream; 517 unsigned int format_val; /* format value to be set in the 518 * controller and the codec 519 */ 520 unsigned char stream_tag; /* assigned stream */ 521 unsigned char index; /* stream index */ 522 int assigned_key; /* last device# key assigned to */ 523 524 bool opened:1; 525 bool running:1; 526 bool prepared:1; 527 bool no_period_wakeup:1; 528 bool locked:1; 529 bool stripe:1; /* apply stripe control */ 530 531 u64 curr_pos; 532 /* timestamp */ 533 unsigned long start_wallclk; /* start + minimum wallclk */ 534 unsigned long period_wallclk; /* wallclk for period */ 535 struct timecounter tc; 536 struct cyclecounter cc; 537 int delay_negative_threshold; 538 539 struct list_head list; 540 #ifdef CONFIG_SND_HDA_DSP_LOADER 541 /* DSP access mutex */ 542 struct mutex dsp_mutex; 543 #endif 544 }; 545 546 void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev, 547 int idx, int direction, int tag); 548 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus, 549 struct snd_pcm_substream *substream); 550 void snd_hdac_stream_release(struct hdac_stream *azx_dev); 551 struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus, 552 int dir, int stream_tag); 553 554 int snd_hdac_stream_setup(struct hdac_stream *azx_dev); 555 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); 556 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev); 557 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev, 558 unsigned int format_val); 559 void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start); 560 void snd_hdac_stream_clear(struct hdac_stream *azx_dev); 561 void snd_hdac_stream_stop(struct hdac_stream *azx_dev); 562 void snd_hdac_stream_reset(struct hdac_stream *azx_dev); 563 void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set, 564 unsigned int streams, unsigned int reg); 565 void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, 566 unsigned int streams); 567 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, 568 unsigned int streams); 569 int snd_hdac_get_stream_stripe_ctl(struct hdac_bus *bus, 570 struct snd_pcm_substream *substream); 571 572 /* 573 * macros for easy use 574 */ 575 /* read/write a register, pass without AZX_REG_ prefix */ 576 #define snd_hdac_stream_writel(dev, reg, value) \ 577 snd_hdac_reg_writel((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value) 578 #define snd_hdac_stream_writew(dev, reg, value) \ 579 snd_hdac_reg_writew((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value) 580 #define snd_hdac_stream_writeb(dev, reg, value) \ 581 snd_hdac_reg_writeb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value) 582 #define snd_hdac_stream_readl(dev, reg) \ 583 snd_hdac_reg_readl((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg) 584 #define snd_hdac_stream_readw(dev, reg) \ 585 snd_hdac_reg_readw((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg) 586 #define snd_hdac_stream_readb(dev, reg) \ 587 snd_hdac_reg_readb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg) 588 589 /* update a register, pass without AZX_REG_ prefix */ 590 #define snd_hdac_stream_updatel(dev, reg, mask, val) \ 591 snd_hdac_stream_writel(dev, reg, \ 592 (snd_hdac_stream_readl(dev, reg) & \ 593 ~(mask)) | (val)) 594 #define snd_hdac_stream_updatew(dev, reg, mask, val) \ 595 snd_hdac_stream_writew(dev, reg, \ 596 (snd_hdac_stream_readw(dev, reg) & \ 597 ~(mask)) | (val)) 598 #define snd_hdac_stream_updateb(dev, reg, mask, val) \ 599 snd_hdac_stream_writeb(dev, reg, \ 600 (snd_hdac_stream_readb(dev, reg) & \ 601 ~(mask)) | (val)) 602 603 #ifdef CONFIG_SND_HDA_DSP_LOADER 604 /* DSP lock helpers */ 605 #define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) 606 #define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) 607 #define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) 608 #define snd_hdac_stream_is_locked(dev) ((dev)->locked) 609 /* DSP loader helpers */ 610 int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, 611 unsigned int byte_size, struct snd_dma_buffer *bufp); 612 void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start); 613 void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, 614 struct snd_dma_buffer *dmab); 615 #else /* CONFIG_SND_HDA_DSP_LOADER */ 616 #define snd_hdac_dsp_lock_init(dev) do {} while (0) 617 #define snd_hdac_dsp_lock(dev) do {} while (0) 618 #define snd_hdac_dsp_unlock(dev) do {} while (0) 619 #define snd_hdac_stream_is_locked(dev) 0 620 621 static inline int 622 snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, 623 unsigned int byte_size, struct snd_dma_buffer *bufp) 624 { 625 return 0; 626 } 627 628 static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start) 629 { 630 } 631 632 static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, 633 struct snd_dma_buffer *dmab) 634 { 635 } 636 #endif /* CONFIG_SND_HDA_DSP_LOADER */ 637 638 639 /* 640 * generic array helpers 641 */ 642 void *snd_array_new(struct snd_array *array); 643 void snd_array_free(struct snd_array *array); 644 static inline void snd_array_init(struct snd_array *array, unsigned int size, 645 unsigned int align) 646 { 647 array->elem_size = size; 648 array->alloc_align = align; 649 } 650 651 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx) 652 { 653 return array->list + idx * array->elem_size; 654 } 655 656 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr) 657 { 658 return (unsigned long)(ptr - array->list) / array->elem_size; 659 } 660 661 /* a helper macro to iterate for each snd_array element */ 662 #define snd_array_for_each(array, idx, ptr) \ 663 for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \ 664 (ptr) = snd_array_elem(array, ++(idx))) 665 666 #endif /* __SOUND_HDAUDIO_H */ 667