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