1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ 2 /* Copyright(c) 2015-17 Intel Corporation. */ 3 4 #ifndef __SDW_INTEL_H 5 #define __SDW_INTEL_H 6 7 #include <linux/irqreturn.h> 8 #include <linux/soundwire/sdw.h> 9 10 /********************************************************************* 11 * cAVS and ACE1.x definitions 12 *********************************************************************/ 13 14 #define SDW_SHIM_BASE 0x2C000 15 #define SDW_ALH_BASE 0x2C800 16 #define SDW_SHIM_BASE_ACE 0x38000 17 #define SDW_ALH_BASE_ACE 0x24000 18 #define SDW_LINK_BASE 0x30000 19 #define SDW_LINK_SIZE 0x10000 20 21 /* Intel SHIM Registers Definition */ 22 /* LCAP */ 23 #define SDW_SHIM_LCAP 0x0 24 #define SDW_SHIM_LCAP_LCOUNT_MASK GENMASK(2, 0) 25 26 /* LCTL */ 27 #define SDW_SHIM_LCTL 0x4 28 29 #define SDW_SHIM_LCTL_SPA BIT(0) 30 #define SDW_SHIM_LCTL_SPA_MASK GENMASK(3, 0) 31 #define SDW_SHIM_LCTL_CPA BIT(8) 32 #define SDW_SHIM_LCTL_CPA_MASK GENMASK(11, 8) 33 34 /* SYNC */ 35 #define SDW_SHIM_SYNC 0xC 36 37 #define SDW_SHIM_SYNC_SYNCPRD_VAL_24 (24000 / SDW_CADENCE_GSYNC_KHZ - 1) 38 #define SDW_SHIM_SYNC_SYNCPRD_VAL_38_4 (38400 / SDW_CADENCE_GSYNC_KHZ - 1) 39 #define SDW_SHIM_SYNC_SYNCPRD GENMASK(14, 0) 40 #define SDW_SHIM_SYNC_SYNCCPU BIT(15) 41 #define SDW_SHIM_SYNC_CMDSYNC_MASK GENMASK(19, 16) 42 #define SDW_SHIM_SYNC_CMDSYNC BIT(16) 43 #define SDW_SHIM_SYNC_SYNCGO BIT(24) 44 45 /* Control stream capabililities and channel mask */ 46 #define SDW_SHIM_CTLSCAP(x) (0x010 + 0x60 * (x)) 47 #define SDW_SHIM_CTLS0CM(x) (0x012 + 0x60 * (x)) 48 #define SDW_SHIM_CTLS1CM(x) (0x014 + 0x60 * (x)) 49 #define SDW_SHIM_CTLS2CM(x) (0x016 + 0x60 * (x)) 50 #define SDW_SHIM_CTLS3CM(x) (0x018 + 0x60 * (x)) 51 52 /* PCM Stream capabilities */ 53 #define SDW_SHIM_PCMSCAP(x) (0x020 + 0x60 * (x)) 54 55 #define SDW_SHIM_PCMSCAP_ISS GENMASK(3, 0) 56 #define SDW_SHIM_PCMSCAP_OSS GENMASK(7, 4) 57 #define SDW_SHIM_PCMSCAP_BSS GENMASK(12, 8) 58 59 /* PCM Stream Channel Map */ 60 #define SDW_SHIM_PCMSYCHM(x, y) (0x022 + (0x60 * (x)) + (0x2 * (y))) 61 62 /* PCM Stream Channel Count */ 63 #define SDW_SHIM_PCMSYCHC(x, y) (0x042 + (0x60 * (x)) + (0x2 * (y))) 64 65 #define SDW_SHIM_PCMSYCM_LCHN GENMASK(3, 0) 66 #define SDW_SHIM_PCMSYCM_HCHN GENMASK(7, 4) 67 #define SDW_SHIM_PCMSYCM_STREAM GENMASK(13, 8) 68 #define SDW_SHIM_PCMSYCM_DIR BIT(15) 69 70 /* IO control */ 71 #define SDW_SHIM_IOCTL(x) (0x06C + 0x60 * (x)) 72 73 #define SDW_SHIM_IOCTL_MIF BIT(0) 74 #define SDW_SHIM_IOCTL_CO BIT(1) 75 #define SDW_SHIM_IOCTL_COE BIT(2) 76 #define SDW_SHIM_IOCTL_DO BIT(3) 77 #define SDW_SHIM_IOCTL_DOE BIT(4) 78 #define SDW_SHIM_IOCTL_BKE BIT(5) 79 #define SDW_SHIM_IOCTL_WPDD BIT(6) 80 #define SDW_SHIM_IOCTL_CIBD BIT(8) 81 #define SDW_SHIM_IOCTL_DIBD BIT(9) 82 83 /* Wake Enable*/ 84 #define SDW_SHIM_WAKEEN 0x190 85 86 #define SDW_SHIM_WAKEEN_ENABLE BIT(0) 87 88 /* Wake Status */ 89 #define SDW_SHIM_WAKESTS 0x192 90 91 #define SDW_SHIM_WAKESTS_STATUS BIT(0) 92 93 /* AC Timing control */ 94 #define SDW_SHIM_CTMCTL(x) (0x06E + 0x60 * (x)) 95 96 #define SDW_SHIM_CTMCTL_DACTQE BIT(0) 97 #define SDW_SHIM_CTMCTL_DODS BIT(1) 98 #define SDW_SHIM_CTMCTL_DOAIS GENMASK(4, 3) 99 100 /* Intel ALH Register definitions */ 101 #define SDW_ALH_STRMZCFG(x) (0x000 + (0x4 * (x))) 102 #define SDW_ALH_NUM_STREAMS 64 103 104 #define SDW_ALH_STRMZCFG_DMAT_VAL 0x3 105 #define SDW_ALH_STRMZCFG_DMAT GENMASK(7, 0) 106 #define SDW_ALH_STRMZCFG_CHN GENMASK(19, 16) 107 108 /********************************************************************* 109 * ACE2.x definitions for SHIM registers - only accessible when the 110 * HDAudio extended link LCTL.SPA/CPA = 1. 111 *********************************************************************/ 112 /* x variable is link index */ 113 #define SDW_SHIM2_GENERIC_BASE(x) (0x00030000 + 0x8000 * (x)) 114 #define SDW_IP_BASE(x) (0x00030100 + 0x8000 * (x)) 115 #define SDW_SHIM2_VS_BASE(x) (0x00036000 + 0x8000 * (x)) 116 117 /* SHIM2 Generic Registers */ 118 /* Read-only capabilities */ 119 #define SDW_SHIM2_LECAP 0x00 120 #define SDW_SHIM2_LECAP_HDS BIT(0) /* unset -> Host mode */ 121 #define SDW_SHIM2_LECAP_MLC GENMASK(3, 1) /* Number of Lanes */ 122 123 /* PCM Stream capabilities */ 124 #define SDW_SHIM2_PCMSCAP 0x10 125 #define SDW_SHIM2_PCMSCAP_ISS GENMASK(3, 0) /* Input-only streams */ 126 #define SDW_SHIM2_PCMSCAP_OSS GENMASK(7, 4) /* Output-only streams */ 127 #define SDW_SHIM2_PCMSCAP_BSS GENMASK(12, 8) /* Bidirectional streams */ 128 129 /* Read-only PCM Stream Channel Count, y variable is stream */ 130 #define SDW_SHIM2_PCMSYCHC(y) (0x14 + (0x4 * (y))) 131 #define SDW_SHIM2_PCMSYCHC_CS GENMASK(3, 0) /* Channels Supported */ 132 133 /* PCM Stream Channel Map */ 134 #define SDW_SHIM2_PCMSYCHM(y) (0x16 + (0x4 * (y))) 135 #define SDW_SHIM2_PCMSYCHM_LCHAN GENMASK(3, 0) /* Lowest channel used by the FIFO port */ 136 #define SDW_SHIM2_PCMSYCHM_HCHAN GENMASK(7, 4) /* Lowest channel used by the FIFO port */ 137 #define SDW_SHIM2_PCMSYCHM_STRM GENMASK(13, 8) /* HDaudio stream tag */ 138 #define SDW_SHIM2_PCMSYCHM_DIR BIT(15) /* HDaudio stream direction */ 139 140 /* SHIM2 vendor-specific registers */ 141 #define SDW_SHIM2_INTEL_VS_LVSCTL 0x04 142 #define SDW_SHIM2_INTEL_VS_LVSCTL_FCG BIT(26) 143 #define SDW_SHIM2_INTEL_VS_LVSCTL_MLCS GENMASK(29, 27) 144 #define SDW_SHIM2_INTEL_VS_LVSCTL_DCGD BIT(30) 145 #define SDW_SHIM2_INTEL_VS_LVSCTL_ICGD BIT(31) 146 147 #define SDW_SHIM2_MLCS_XTAL_CLK 0x0 148 #define SDW_SHIM2_MLCS_CARDINAL_CLK 0x1 149 #define SDW_SHIM2_MLCS_AUDIO_PLL_CLK 0x2 150 #define SDW_SHIM2_MLCS_MCLK_INPUT_CLK 0x3 151 #define SDW_SHIM2_MLCS_WOV_RING_OSC_CLK 0x4 152 153 #define SDW_SHIM2_INTEL_VS_WAKEEN 0x08 154 #define SDW_SHIM2_INTEL_VS_WAKEEN_PWE BIT(0) 155 156 #define SDW_SHIM2_INTEL_VS_WAKESTS 0x0A 157 #define SDW_SHIM2_INTEL_VS_WAKEEN_PWS BIT(0) 158 159 #define SDW_SHIM2_INTEL_VS_IOCTL 0x0C 160 #define SDW_SHIM2_INTEL_VS_IOCTL_MIF BIT(0) 161 #define SDW_SHIM2_INTEL_VS_IOCTL_CO BIT(1) 162 #define SDW_SHIM2_INTEL_VS_IOCTL_COE BIT(2) 163 #define SDW_SHIM2_INTEL_VS_IOCTL_DO BIT(3) 164 #define SDW_SHIM2_INTEL_VS_IOCTL_DOE BIT(4) 165 #define SDW_SHIM2_INTEL_VS_IOCTL_BKE BIT(5) 166 #define SDW_SHIM2_INTEL_VS_IOCTL_WPDD BIT(6) 167 #define SDW_SHIM2_INTEL_VS_IOCTL_ODC BIT(7) 168 #define SDW_SHIM2_INTEL_VS_IOCTL_CIBD BIT(8) 169 #define SDW_SHIM2_INTEL_VS_IOCTL_DIBD BIT(9) 170 #define SDW_SHIM2_INTEL_VS_IOCTL_HAMIFD BIT(10) 171 172 #define SDW_SHIM2_INTEL_VS_ACTMCTL 0x0E 173 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DACTQE BIT(0) 174 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DODS BIT(1) 175 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DODSE BIT(2) 176 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS GENMASK(4, 3) 177 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DOAISE BIT(5) 178 179 /** 180 * struct sdw_intel_stream_params_data: configuration passed during 181 * the @params_stream callback, e.g. for interaction with DSP 182 * firmware. 183 */ 184 struct sdw_intel_stream_params_data { 185 struct snd_pcm_substream *substream; 186 struct snd_soc_dai *dai; 187 struct snd_pcm_hw_params *hw_params; 188 int link_id; 189 int alh_stream_id; 190 }; 191 192 /** 193 * struct sdw_intel_stream_free_data: configuration passed during 194 * the @free_stream callback, e.g. for interaction with DSP 195 * firmware. 196 */ 197 struct sdw_intel_stream_free_data { 198 struct snd_pcm_substream *substream; 199 struct snd_soc_dai *dai; 200 int link_id; 201 }; 202 203 /** 204 * struct sdw_intel_ops: Intel audio driver callback ops 205 * 206 */ 207 struct sdw_intel_ops { 208 int (*params_stream)(struct device *dev, 209 struct sdw_intel_stream_params_data *params_data); 210 int (*free_stream)(struct device *dev, 211 struct sdw_intel_stream_free_data *free_data); 212 int (*trigger)(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai); 213 }; 214 215 /** 216 * struct sdw_intel_acpi_info - Soundwire Intel information found in ACPI tables 217 * @handle: ACPI controller handle 218 * @count: link count found with "sdw-master-count" property 219 * @link_mask: bit-wise mask listing links enabled by BIOS menu 220 * 221 * this structure could be expanded to e.g. provide all the _ADR 222 * information in case the link_mask is not sufficient to identify 223 * platform capabilities. 224 */ 225 struct sdw_intel_acpi_info { 226 acpi_handle handle; 227 int count; 228 u32 link_mask; 229 }; 230 231 struct sdw_intel_link_dev; 232 233 /* Intel clock-stop/pm_runtime quirk definitions */ 234 235 /* 236 * Force the clock to remain on during pm_runtime suspend. This might 237 * be needed if Slave devices do not have an alternate clock source or 238 * if the latency requirements are very strict. 239 */ 240 #define SDW_INTEL_CLK_STOP_NOT_ALLOWED BIT(0) 241 242 /* 243 * Stop the bus during pm_runtime suspend. If set, a complete bus 244 * reset and re-enumeration will be performed when the bus 245 * restarts. This mode shall not be used if Slave devices can generate 246 * in-band wakes. 247 */ 248 #define SDW_INTEL_CLK_STOP_TEARDOWN BIT(1) 249 250 /* 251 * Stop the bus during pm_suspend if Slaves are not wake capable 252 * (e.g. speaker amplifiers). The clock-stop mode is typically 253 * slightly higher power than when the IP is completely powered-off. 254 */ 255 #define SDW_INTEL_CLK_STOP_WAKE_CAPABLE_ONLY BIT(2) 256 257 /* 258 * Require a bus reset (and complete re-enumeration) when exiting 259 * clock stop modes. This may be needed if the controller power was 260 * turned off and all context lost. This quirk shall not be used if a 261 * Slave device needs to remain enumerated and keep its context, 262 * e.g. to provide the reasons for the wake, report acoustic events or 263 * pass a history buffer. 264 */ 265 #define SDW_INTEL_CLK_STOP_BUS_RESET BIT(3) 266 267 struct sdw_intel_slave_id { 268 int link_id; 269 struct sdw_slave_id id; 270 }; 271 272 struct hdac_bus; 273 274 /** 275 * struct sdw_intel_ctx - context allocated by the controller 276 * driver probe 277 * @count: link count 278 * @mmio_base: mmio base of SoundWire registers, only used to check 279 * hardware capabilities after all power dependencies are settled. 280 * @link_mask: bit-wise mask listing SoundWire links reported by the 281 * Controller 282 * @num_slaves: total number of devices exposed across all enabled links 283 * @handle: ACPI parent handle 284 * @ldev: information for each link (controller-specific and kept 285 * opaque here) 286 * @ids: array of slave_id, representing Slaves exposed across all enabled 287 * links 288 * @link_list: list to handle interrupts across all links 289 * @shim_lock: mutex to handle concurrent rmw access to shared SHIM registers. 290 * @shim_mask: flags to track initialization of SHIM shared registers 291 * @shim_base: sdw shim base. 292 * @alh_base: sdw alh base. 293 */ 294 struct sdw_intel_ctx { 295 int count; 296 void __iomem *mmio_base; 297 u32 link_mask; 298 int num_slaves; 299 acpi_handle handle; 300 struct sdw_intel_link_dev **ldev; 301 struct sdw_intel_slave_id *ids; 302 struct list_head link_list; 303 struct mutex shim_lock; /* lock for access to shared SHIM registers */ 304 u32 shim_mask; 305 u32 shim_base; 306 u32 alh_base; 307 }; 308 309 /** 310 * struct sdw_intel_res - Soundwire Intel global resource structure, 311 * typically populated by the DSP driver 312 * 313 * @hw_ops: abstraction for platform ops 314 * @count: link count 315 * @mmio_base: mmio base of SoundWire registers 316 * @irq: interrupt number 317 * @handle: ACPI parent handle 318 * @parent: parent device 319 * @ops: callback ops 320 * @dev: device implementing hwparams and free callbacks 321 * @link_mask: bit-wise mask listing links selected by the DSP driver 322 * This mask may be a subset of the one reported by the controller since 323 * machine-specific quirks are handled in the DSP driver. 324 * @clock_stop_quirks: mask array of possible behaviors requested by the 325 * DSP driver. The quirks are common for all links for now. 326 * @shim_base: sdw shim base. 327 * @alh_base: sdw alh base. 328 * @ext: extended HDaudio link support 329 * @hbus: hdac_bus pointer, needed for power management 330 * @eml_lock: mutex protecting shared registers in the HDaudio multi-link 331 * space 332 */ 333 struct sdw_intel_res { 334 const struct sdw_intel_hw_ops *hw_ops; 335 int count; 336 void __iomem *mmio_base; 337 int irq; 338 acpi_handle handle; 339 struct device *parent; 340 const struct sdw_intel_ops *ops; 341 struct device *dev; 342 u32 link_mask; 343 u32 clock_stop_quirks; 344 u32 shim_base; 345 u32 alh_base; 346 bool ext; 347 struct hdac_bus *hbus; 348 struct mutex *eml_lock; 349 }; 350 351 /* 352 * On Intel platforms, the SoundWire IP has dependencies on power 353 * rails shared with the DSP, and the initialization steps are split 354 * in three. First an ACPI scan to check what the firmware describes 355 * in DSDT tables, then an allocation step (with no hardware 356 * configuration but with all the relevant devices created) and last 357 * the actual hardware configuration. The final stage is a global 358 * interrupt enable which is controlled by the DSP driver. Splitting 359 * these phases helps simplify the boot flow and make early decisions 360 * on e.g. which machine driver to select (I2S mode, HDaudio or 361 * SoundWire). 362 */ 363 int sdw_intel_acpi_scan(acpi_handle *parent_handle, 364 struct sdw_intel_acpi_info *info); 365 366 void sdw_intel_process_wakeen_event(struct sdw_intel_ctx *ctx); 367 368 struct sdw_intel_ctx * 369 sdw_intel_probe(struct sdw_intel_res *res); 370 371 int sdw_intel_startup(struct sdw_intel_ctx *ctx); 372 373 void sdw_intel_exit(struct sdw_intel_ctx *ctx); 374 375 irqreturn_t sdw_intel_thread(int irq, void *dev_id); 376 377 #define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1) 378 379 struct sdw_intel; 380 381 /* struct intel_sdw_hw_ops - SoundWire ops for Intel platforms. 382 * @debugfs_init: initialize all debugfs capabilities 383 * @debugfs_exit: close and cleanup debugfs capabilities 384 * @register_dai: read all PDI information and register DAIs 385 * @check_clock_stop: throw error message if clock is not stopped. 386 * @start_bus: normal start 387 * @start_bus_after_reset: start after reset 388 * @start_bus_after_clock_stop: start after mode0 clock stop 389 * @stop_bus: stop all bus 390 * @link_power_up: power-up using chip-specific helpers 391 * @link_power_down: power-down with chip-specific helpers 392 * @shim_check_wake: check if a wake was received 393 * @shim_wake: enable/disable in-band wake management 394 * @pre_bank_switch: helper for bus management 395 * @post_bank_switch: helper for bus management 396 * @sync_arm: helper for multi-link synchronization 397 * @sync_go_unlocked: helper for multi-link synchronization - 398 * shim_lock is assumed to be locked at higher level 399 * @sync_go: helper for multi-link synchronization 400 * @sync_check_cmdsync_unlocked: helper for multi-link synchronization 401 * and bank switch - shim_lock is assumed to be locked at higher level 402 * @program_sdi: helper for codec command/control based on dev_num 403 */ 404 struct sdw_intel_hw_ops { 405 void (*debugfs_init)(struct sdw_intel *sdw); 406 void (*debugfs_exit)(struct sdw_intel *sdw); 407 408 int (*register_dai)(struct sdw_intel *sdw); 409 410 void (*check_clock_stop)(struct sdw_intel *sdw); 411 int (*start_bus)(struct sdw_intel *sdw); 412 int (*start_bus_after_reset)(struct sdw_intel *sdw); 413 int (*start_bus_after_clock_stop)(struct sdw_intel *sdw); 414 int (*stop_bus)(struct sdw_intel *sdw, bool clock_stop); 415 416 int (*link_power_up)(struct sdw_intel *sdw); 417 int (*link_power_down)(struct sdw_intel *sdw); 418 419 int (*shim_check_wake)(struct sdw_intel *sdw); 420 void (*shim_wake)(struct sdw_intel *sdw, bool wake_enable); 421 422 int (*pre_bank_switch)(struct sdw_intel *sdw); 423 int (*post_bank_switch)(struct sdw_intel *sdw); 424 425 void (*sync_arm)(struct sdw_intel *sdw); 426 int (*sync_go_unlocked)(struct sdw_intel *sdw); 427 int (*sync_go)(struct sdw_intel *sdw); 428 bool (*sync_check_cmdsync_unlocked)(struct sdw_intel *sdw); 429 430 void (*program_sdi)(struct sdw_intel *sdw, int dev_num); 431 }; 432 433 extern const struct sdw_intel_hw_ops sdw_intel_cnl_hw_ops; 434 extern const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops; 435 436 #endif 437