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/memalloc.h> 15 #include <sound/hda_verbs.h> 16 #include <drm/i915_component.h> 17 18 /* codec node id */ 19 typedef u16 hda_nid_t; 20 21 struct hdac_bus; 22 struct hdac_stream; 23 struct hdac_device; 24 struct hdac_driver; 25 struct hdac_widget_tree; 26 struct hda_device_id; 27 28 /* 29 * exported bus type 30 */ 31 extern struct bus_type snd_hda_bus_type; 32 33 /* 34 * generic arrays 35 */ 36 struct snd_array { 37 unsigned int used; 38 unsigned int alloced; 39 unsigned int elem_size; 40 unsigned int alloc_align; 41 void *list; 42 }; 43 44 /* 45 * HD-audio codec base device 46 */ 47 struct hdac_device { 48 struct device dev; 49 int type; 50 struct hdac_bus *bus; 51 unsigned int addr; /* codec address */ 52 struct list_head list; /* list point for bus codec_list */ 53 54 hda_nid_t afg; /* AFG node id */ 55 hda_nid_t mfg; /* MFG node id */ 56 57 /* ids */ 58 unsigned int vendor_id; 59 unsigned int subsystem_id; 60 unsigned int revision_id; 61 unsigned int afg_function_id; 62 unsigned int mfg_function_id; 63 unsigned int afg_unsol:1; 64 unsigned int mfg_unsol:1; 65 66 unsigned int power_caps; /* FG power caps */ 67 68 const char *vendor_name; /* codec vendor name */ 69 const char *chip_name; /* codec chip name */ 70 71 /* verb exec op override */ 72 int (*exec_verb)(struct hdac_device *dev, unsigned int cmd, 73 unsigned int flags, unsigned int *res); 74 75 /* widgets */ 76 unsigned int num_nodes; 77 hda_nid_t start_nid, end_nid; 78 79 /* misc flags */ 80 atomic_t in_pm; /* suspend/resume being performed */ 81 bool link_power_control:1; 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 /* direction */ 102 enum { 103 HDA_INPUT, HDA_OUTPUT 104 }; 105 106 #define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev) 107 108 int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus, 109 const char *name, unsigned int addr); 110 void snd_hdac_device_exit(struct hdac_device *dev); 111 int snd_hdac_device_register(struct hdac_device *codec); 112 void snd_hdac_device_unregister(struct hdac_device *codec); 113 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name); 114 int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size); 115 116 int snd_hdac_refresh_widgets(struct hdac_device *codec, bool sysfs); 117 118 unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, 119 unsigned int verb, unsigned int parm); 120 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, 121 unsigned int flags, unsigned int *res); 122 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, 123 unsigned int verb, unsigned int parm, unsigned int *res); 124 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, 125 unsigned int *res); 126 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, 127 int parm); 128 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, 129 unsigned int parm, unsigned int val); 130 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, 131 hda_nid_t *conn_list, int max_conns); 132 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, 133 hda_nid_t *start_id); 134 unsigned int snd_hdac_calc_stream_format(unsigned int rate, 135 unsigned int channels, 136 unsigned int format, 137 unsigned int maxbps, 138 unsigned short spdif_ctls); 139 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 140 u32 *ratesp, u64 *formatsp, unsigned int *bpsp); 141 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 142 unsigned int format); 143 144 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 145 int flags, unsigned int verb, unsigned int parm); 146 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 147 int flags, unsigned int verb, unsigned int parm); 148 bool snd_hdac_check_power_state(struct hdac_device *hdac, 149 hda_nid_t nid, unsigned int target_state); 150 unsigned int snd_hdac_sync_power_state(struct hdac_device *hdac, 151 hda_nid_t nid, unsigned int target_state); 152 /** 153 * snd_hdac_read_parm - read a codec parameter 154 * @codec: the codec object 155 * @nid: NID to read a parameter 156 * @parm: parameter to read 157 * 158 * Returns -1 for error. If you need to distinguish the error more 159 * strictly, use _snd_hdac_read_parm() directly. 160 */ 161 static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, 162 int parm) 163 { 164 unsigned int val; 165 166 return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val; 167 } 168 169 #ifdef CONFIG_PM 170 int snd_hdac_power_up(struct hdac_device *codec); 171 int snd_hdac_power_down(struct hdac_device *codec); 172 int snd_hdac_power_up_pm(struct hdac_device *codec); 173 int snd_hdac_power_down_pm(struct hdac_device *codec); 174 int snd_hdac_keep_power_up(struct hdac_device *codec); 175 176 /* call this at entering into suspend/resume callbacks in codec driver */ 177 static inline void snd_hdac_enter_pm(struct hdac_device *codec) 178 { 179 atomic_inc(&codec->in_pm); 180 } 181 182 /* call this at leaving from suspend/resume callbacks in codec driver */ 183 static inline void snd_hdac_leave_pm(struct hdac_device *codec) 184 { 185 atomic_dec(&codec->in_pm); 186 } 187 188 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) 189 { 190 return atomic_read(&codec->in_pm); 191 } 192 193 static inline bool snd_hdac_is_power_on(struct hdac_device *codec) 194 { 195 return !pm_runtime_suspended(&codec->dev); 196 } 197 #else 198 static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; } 199 static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; } 200 static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; } 201 static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; } 202 static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; } 203 static inline void snd_hdac_enter_pm(struct hdac_device *codec) {} 204 static inline void snd_hdac_leave_pm(struct hdac_device *codec) {} 205 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) { return 0; } 206 static inline bool snd_hdac_is_power_on(struct hdac_device *codec) { return 1; } 207 #endif 208 209 /* 210 * HD-audio codec base driver 211 */ 212 struct hdac_driver { 213 struct device_driver driver; 214 int type; 215 const struct hda_device_id *id_table; 216 int (*match)(struct hdac_device *dev, struct hdac_driver *drv); 217 void (*unsol_event)(struct hdac_device *dev, unsigned int event); 218 219 /* fields used by ext bus APIs */ 220 int (*probe)(struct hdac_device *dev); 221 int (*remove)(struct hdac_device *dev); 222 void (*shutdown)(struct hdac_device *dev); 223 }; 224 225 #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver) 226 227 const struct hda_device_id * 228 hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv); 229 230 /* 231 * Bus verb operators 232 */ 233 struct hdac_bus_ops { 234 /* send a single command */ 235 int (*command)(struct hdac_bus *bus, unsigned int cmd); 236 /* get a response from the last command */ 237 int (*get_response)(struct hdac_bus *bus, unsigned int addr, 238 unsigned int *res); 239 /* control the link power */ 240 int (*link_power)(struct hdac_bus *bus, bool enable); 241 }; 242 243 /* 244 * ops used for ASoC HDA codec drivers 245 */ 246 struct hdac_ext_bus_ops { 247 int (*hdev_attach)(struct hdac_device *hdev); 248 int (*hdev_detach)(struct hdac_device *hdev); 249 }; 250 251 /* 252 * Lowlevel I/O operators 253 */ 254 struct hdac_io_ops { 255 /* mapped register accesses */ 256 void (*reg_writel)(u32 value, u32 __iomem *addr); 257 u32 (*reg_readl)(u32 __iomem *addr); 258 void (*reg_writew)(u16 value, u16 __iomem *addr); 259 u16 (*reg_readw)(u16 __iomem *addr); 260 void (*reg_writeb)(u8 value, u8 __iomem *addr); 261 u8 (*reg_readb)(u8 __iomem *addr); 262 /* Allocation ops */ 263 int (*dma_alloc_pages)(struct hdac_bus *bus, int type, size_t size, 264 struct snd_dma_buffer *buf); 265 void (*dma_free_pages)(struct hdac_bus *bus, 266 struct snd_dma_buffer *buf); 267 }; 268 269 #define HDA_UNSOL_QUEUE_SIZE 64 270 #define HDA_MAX_CODECS 8 /* limit by controller side */ 271 272 /* 273 * CORB/RIRB 274 * 275 * Each CORB entry is 4byte, RIRB is 8byte 276 */ 277 struct hdac_rb { 278 __le32 *buf; /* virtual address of CORB/RIRB buffer */ 279 dma_addr_t addr; /* physical address of CORB/RIRB buffer */ 280 unsigned short rp, wp; /* RIRB read/write pointers */ 281 int cmds[HDA_MAX_CODECS]; /* number of pending requests */ 282 u32 res[HDA_MAX_CODECS]; /* last read value */ 283 }; 284 285 /* 286 * HD-audio bus base driver 287 * 288 * @ppcap: pp capabilities pointer 289 * @spbcap: SPIB capabilities pointer 290 * @mlcap: MultiLink capabilities pointer 291 * @gtscap: gts capabilities pointer 292 * @drsmcap: dma resume capabilities pointer 293 * @num_streams: streams supported 294 * @idx: HDA link index 295 * @hlink_list: link list of HDA links 296 * @lock: lock for link mgmt 297 * @cmd_dma_state: state of cmd DMAs: CORB and RIRB 298 */ 299 struct hdac_bus { 300 struct device *dev; 301 const struct hdac_bus_ops *ops; 302 const struct hdac_io_ops *io_ops; 303 const struct hdac_ext_bus_ops *ext_ops; 304 305 /* h/w resources */ 306 unsigned long addr; 307 void __iomem *remap_addr; 308 int irq; 309 310 void __iomem *ppcap; 311 void __iomem *spbcap; 312 void __iomem *mlcap; 313 void __iomem *gtscap; 314 void __iomem *drsmcap; 315 316 /* codec linked list */ 317 struct list_head codec_list; 318 unsigned int num_codecs; 319 320 /* link caddr -> codec */ 321 struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1]; 322 323 /* unsolicited event queue */ 324 u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */ 325 unsigned int unsol_rp, unsol_wp; 326 struct work_struct unsol_work; 327 328 /* bit flags of detected codecs */ 329 unsigned long codec_mask; 330 331 /* bit flags of powered codecs */ 332 unsigned long codec_powered; 333 334 /* CORB/RIRB */ 335 struct hdac_rb corb; 336 struct hdac_rb rirb; 337 unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */ 338 339 /* CORB/RIRB and position buffers */ 340 struct snd_dma_buffer rb; 341 struct snd_dma_buffer posbuf; 342 343 /* hdac_stream linked list */ 344 struct list_head stream_list; 345 346 /* operation state */ 347 bool chip_init:1; /* h/w initialized */ 348 349 /* behavior flags */ 350 bool sync_write:1; /* sync after verb write */ 351 bool use_posbuf:1; /* use position buffer */ 352 bool snoop:1; /* enable snooping */ 353 bool align_bdle_4k:1; /* BDLE align 4K boundary */ 354 bool reverse_assign:1; /* assign devices in reverse order */ 355 bool corbrp_self_clear:1; /* CORBRP clears itself after reset */ 356 357 int bdl_pos_adj; /* BDL position adjustment */ 358 359 /* locks */ 360 spinlock_t reg_lock; 361 struct mutex cmd_mutex; 362 363 /* i915 component interface */ 364 struct i915_audio_component *audio_component; 365 int i915_power_refcount; 366 367 /* parameters required for enhanced capabilities */ 368 int num_streams; 369 int idx; 370 371 struct list_head hlink_list; 372 373 struct mutex lock; 374 bool cmd_dma_state; 375 376 }; 377 378 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, 379 const struct hdac_bus_ops *ops, 380 const struct hdac_io_ops *io_ops); 381 void snd_hdac_bus_exit(struct hdac_bus *bus); 382 int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr, 383 unsigned int cmd, unsigned int *res); 384 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr, 385 unsigned int cmd, unsigned int *res); 386 void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex); 387 388 int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec); 389 void snd_hdac_bus_remove_device(struct hdac_bus *bus, 390 struct hdac_device *codec); 391 392 static inline void snd_hdac_codec_link_up(struct hdac_device *codec) 393 { 394 set_bit(codec->addr, &codec->bus->codec_powered); 395 } 396 397 static inline void snd_hdac_codec_link_down(struct hdac_device *codec) 398 { 399 clear_bit(codec->addr, &codec->bus->codec_powered); 400 } 401 402 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val); 403 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr, 404 unsigned int *res); 405 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus); 406 int snd_hdac_link_power(struct hdac_device *codec, bool enable); 407 408 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset); 409 void snd_hdac_bus_stop_chip(struct hdac_bus *bus); 410 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus); 411 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus); 412 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus); 413 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus); 414 415 void snd_hdac_bus_update_rirb(struct hdac_bus *bus); 416 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status, 417 void (*ack)(struct hdac_bus *, 418 struct hdac_stream *)); 419 420 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus); 421 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus); 422 423 /* 424 * macros for easy use 425 */ 426 #define _snd_hdac_chip_writeb(chip, reg, value) \ 427 ((chip)->io_ops->reg_writeb(value, (chip)->remap_addr + (reg))) 428 #define _snd_hdac_chip_readb(chip, reg) \ 429 ((chip)->io_ops->reg_readb((chip)->remap_addr + (reg))) 430 #define _snd_hdac_chip_writew(chip, reg, value) \ 431 ((chip)->io_ops->reg_writew(value, (chip)->remap_addr + (reg))) 432 #define _snd_hdac_chip_readw(chip, reg) \ 433 ((chip)->io_ops->reg_readw((chip)->remap_addr + (reg))) 434 #define _snd_hdac_chip_writel(chip, reg, value) \ 435 ((chip)->io_ops->reg_writel(value, (chip)->remap_addr + (reg))) 436 #define _snd_hdac_chip_readl(chip, reg) \ 437 ((chip)->io_ops->reg_readl((chip)->remap_addr + (reg))) 438 439 /* read/write a register, pass without AZX_REG_ prefix */ 440 #define snd_hdac_chip_writel(chip, reg, value) \ 441 _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value) 442 #define snd_hdac_chip_writew(chip, reg, value) \ 443 _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value) 444 #define snd_hdac_chip_writeb(chip, reg, value) \ 445 _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value) 446 #define snd_hdac_chip_readl(chip, reg) \ 447 _snd_hdac_chip_readl(chip, AZX_REG_ ## reg) 448 #define snd_hdac_chip_readw(chip, reg) \ 449 _snd_hdac_chip_readw(chip, AZX_REG_ ## reg) 450 #define snd_hdac_chip_readb(chip, reg) \ 451 _snd_hdac_chip_readb(chip, AZX_REG_ ## reg) 452 453 /* update a register, pass without AZX_REG_ prefix */ 454 #define snd_hdac_chip_updatel(chip, reg, mask, val) \ 455 snd_hdac_chip_writel(chip, reg, \ 456 (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val)) 457 #define snd_hdac_chip_updatew(chip, reg, mask, val) \ 458 snd_hdac_chip_writew(chip, reg, \ 459 (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val)) 460 #define snd_hdac_chip_updateb(chip, reg, mask, val) \ 461 snd_hdac_chip_writeb(chip, reg, \ 462 (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val)) 463 464 /* 465 * HD-audio stream 466 */ 467 struct hdac_stream { 468 struct hdac_bus *bus; 469 struct snd_dma_buffer bdl; /* BDL buffer */ 470 __le32 *posbuf; /* position buffer pointer */ 471 int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */ 472 473 unsigned int bufsize; /* size of the play buffer in bytes */ 474 unsigned int period_bytes; /* size of the period in bytes */ 475 unsigned int frags; /* number for period in the play buffer */ 476 unsigned int fifo_size; /* FIFO size */ 477 478 void __iomem *sd_addr; /* stream descriptor pointer */ 479 480 u32 sd_int_sta_mask; /* stream int status mask */ 481 482 /* pcm support */ 483 struct snd_pcm_substream *substream; /* assigned substream, 484 * set in PCM open 485 */ 486 unsigned int format_val; /* format value to be set in the 487 * controller and the codec 488 */ 489 unsigned char stream_tag; /* assigned stream */ 490 unsigned char index; /* stream index */ 491 int assigned_key; /* last device# key assigned to */ 492 493 bool opened:1; 494 bool running:1; 495 bool prepared:1; 496 bool no_period_wakeup:1; 497 bool locked:1; 498 499 /* timestamp */ 500 unsigned long start_wallclk; /* start + minimum wallclk */ 501 unsigned long period_wallclk; /* wallclk for period */ 502 struct timecounter tc; 503 struct cyclecounter cc; 504 int delay_negative_threshold; 505 506 struct list_head list; 507 #ifdef CONFIG_SND_HDA_DSP_LOADER 508 /* DSP access mutex */ 509 struct mutex dsp_mutex; 510 #endif 511 }; 512 513 void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev, 514 int idx, int direction, int tag); 515 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus, 516 struct snd_pcm_substream *substream); 517 void snd_hdac_stream_release(struct hdac_stream *azx_dev); 518 struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus, 519 int dir, int stream_tag); 520 521 int snd_hdac_stream_setup(struct hdac_stream *azx_dev); 522 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); 523 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev); 524 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev, 525 unsigned int format_val); 526 void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start); 527 void snd_hdac_stream_clear(struct hdac_stream *azx_dev); 528 void snd_hdac_stream_stop(struct hdac_stream *azx_dev); 529 void snd_hdac_stream_reset(struct hdac_stream *azx_dev); 530 void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set, 531 unsigned int streams, unsigned int reg); 532 void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, 533 unsigned int streams); 534 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, 535 unsigned int streams); 536 /* 537 * macros for easy use 538 */ 539 #define _snd_hdac_stream_write(type, dev, reg, value) \ 540 ((dev)->bus->io_ops->reg_write ## type(value, (dev)->sd_addr + (reg))) 541 #define _snd_hdac_stream_read(type, dev, reg) \ 542 ((dev)->bus->io_ops->reg_read ## type((dev)->sd_addr + (reg))) 543 544 /* read/write a register, pass without AZX_REG_ prefix */ 545 #define snd_hdac_stream_writel(dev, reg, value) \ 546 _snd_hdac_stream_write(l, dev, AZX_REG_ ## reg, value) 547 #define snd_hdac_stream_writew(dev, reg, value) \ 548 _snd_hdac_stream_write(w, dev, AZX_REG_ ## reg, value) 549 #define snd_hdac_stream_writeb(dev, reg, value) \ 550 _snd_hdac_stream_write(b, dev, AZX_REG_ ## reg, value) 551 #define snd_hdac_stream_readl(dev, reg) \ 552 _snd_hdac_stream_read(l, dev, AZX_REG_ ## reg) 553 #define snd_hdac_stream_readw(dev, reg) \ 554 _snd_hdac_stream_read(w, dev, AZX_REG_ ## reg) 555 #define snd_hdac_stream_readb(dev, reg) \ 556 _snd_hdac_stream_read(b, dev, AZX_REG_ ## reg) 557 558 /* update a register, pass without AZX_REG_ prefix */ 559 #define snd_hdac_stream_updatel(dev, reg, mask, val) \ 560 snd_hdac_stream_writel(dev, reg, \ 561 (snd_hdac_stream_readl(dev, reg) & \ 562 ~(mask)) | (val)) 563 #define snd_hdac_stream_updatew(dev, reg, mask, val) \ 564 snd_hdac_stream_writew(dev, reg, \ 565 (snd_hdac_stream_readw(dev, reg) & \ 566 ~(mask)) | (val)) 567 #define snd_hdac_stream_updateb(dev, reg, mask, val) \ 568 snd_hdac_stream_writeb(dev, reg, \ 569 (snd_hdac_stream_readb(dev, reg) & \ 570 ~(mask)) | (val)) 571 572 #ifdef CONFIG_SND_HDA_DSP_LOADER 573 /* DSP lock helpers */ 574 #define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) 575 #define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) 576 #define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) 577 #define snd_hdac_stream_is_locked(dev) ((dev)->locked) 578 /* DSP loader helpers */ 579 int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, 580 unsigned int byte_size, struct snd_dma_buffer *bufp); 581 void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start); 582 void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, 583 struct snd_dma_buffer *dmab); 584 #else /* CONFIG_SND_HDA_DSP_LOADER */ 585 #define snd_hdac_dsp_lock_init(dev) do {} while (0) 586 #define snd_hdac_dsp_lock(dev) do {} while (0) 587 #define snd_hdac_dsp_unlock(dev) do {} while (0) 588 #define snd_hdac_stream_is_locked(dev) 0 589 590 static inline int 591 snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, 592 unsigned int byte_size, struct snd_dma_buffer *bufp) 593 { 594 return 0; 595 } 596 597 static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start) 598 { 599 } 600 601 static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, 602 struct snd_dma_buffer *dmab) 603 { 604 } 605 #endif /* CONFIG_SND_HDA_DSP_LOADER */ 606 607 608 /* 609 * generic array helpers 610 */ 611 void *snd_array_new(struct snd_array *array); 612 void snd_array_free(struct snd_array *array); 613 static inline void snd_array_init(struct snd_array *array, unsigned int size, 614 unsigned int align) 615 { 616 array->elem_size = size; 617 array->alloc_align = align; 618 } 619 620 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx) 621 { 622 return array->list + idx * array->elem_size; 623 } 624 625 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr) 626 { 627 return (unsigned long)(ptr - array->list) / array->elem_size; 628 } 629 630 /* a helper macro to iterate for each snd_array element */ 631 #define snd_array_for_each(array, idx, ptr) \ 632 for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \ 633 (ptr) = snd_array_elem(array, ++(idx))) 634 635 #endif /* __SOUND_HDAUDIO_H */ 636