1 /* 2 * Common SPI Interface: Controller-specific definitions 3 * 4 * (C) Copyright 2001 5 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com. 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #ifndef _SPI_H_ 11 #define _SPI_H_ 12 13 /* SPI mode flags */ 14 #define SPI_CPHA BIT(0) /* clock phase */ 15 #define SPI_CPOL BIT(1) /* clock polarity */ 16 #define SPI_MODE_0 (0|0) /* (original MicroWire) */ 17 #define SPI_MODE_1 (0|SPI_CPHA) 18 #define SPI_MODE_2 (SPI_CPOL|0) 19 #define SPI_MODE_3 (SPI_CPOL|SPI_CPHA) 20 #define SPI_CS_HIGH BIT(2) /* CS active high */ 21 #define SPI_LSB_FIRST BIT(3) /* per-word bits-on-wire */ 22 #define SPI_3WIRE BIT(4) /* SI/SO signals shared */ 23 #define SPI_LOOP BIT(5) /* loopback mode */ 24 #define SPI_SLAVE BIT(6) /* slave mode */ 25 #define SPI_PREAMBLE BIT(7) /* Skip preamble bytes */ 26 #define SPI_TX_BYTE BIT(8) /* transmit with 1 wire byte */ 27 #define SPI_TX_DUAL BIT(9) /* transmit with 2 wires */ 28 #define SPI_TX_QUAD BIT(10) /* transmit with 4 wires */ 29 #define SPI_RX_SLOW BIT(11) /* receive with 1 wire slow */ 30 #define SPI_RX_FAST BIT(12) /* receive with 1 wire fast */ 31 #define SPI_RX_DUAL BIT(13) /* receive with 2 wires */ 32 #define SPI_RX_QUAD BIT(14) /* receive with 4 wires */ 33 34 /* SPI bus connection options - see enum spi_dual_flash */ 35 #define SPI_CONN_DUAL_SHARED (1 << 0) 36 #define SPI_CONN_DUAL_SEPARATED (1 << 1) 37 38 /* Header byte that marks the start of the message */ 39 #define SPI_PREAMBLE_END_BYTE 0xec 40 41 #define SPI_DEFAULT_WORDLEN 8 42 43 #ifdef CONFIG_DM_SPI 44 /* TODO(sjg@chromium.org): Remove this and use max_hz from struct spi_slave */ 45 struct dm_spi_bus { 46 uint max_hz; 47 }; 48 49 /** 50 * struct dm_spi_platdata - platform data for all SPI slaves 51 * 52 * This describes a SPI slave, a child device of the SPI bus. To obtain this 53 * struct from a spi_slave, use dev_get_parent_platdata(dev) or 54 * dev_get_parent_platdata(slave->dev). 55 * 56 * This data is immuatable. Each time the device is probed, @max_hz and @mode 57 * will be copied to struct spi_slave. 58 * 59 * @cs: Chip select number (0..n-1) 60 * @max_hz: Maximum bus speed that this slave can tolerate 61 * @mode: SPI mode to use for this device (see SPI mode flags) 62 */ 63 struct dm_spi_slave_platdata { 64 unsigned int cs; 65 uint max_hz; 66 uint mode; 67 }; 68 69 #endif /* CONFIG_DM_SPI */ 70 71 /** 72 * struct spi_slave - Representation of a SPI slave 73 * 74 * For driver model this is the per-child data used by the SPI bus. It can 75 * be accessed using dev_get_parent_priv() on the slave device. The SPI uclass 76 * sets uip per_child_auto_alloc_size to sizeof(struct spi_slave), and the 77 * driver should not override it. Two platform data fields (max_hz and mode) 78 * are copied into this structure to provide an initial value. This allows 79 * them to be changed, since we should never change platform data in drivers. 80 * 81 * If not using driver model, drivers are expected to extend this with 82 * controller-specific data. 83 * 84 * @dev: SPI slave device 85 * @max_hz: Maximum speed for this slave 86 * @speed: Current bus speed. This is 0 until the bus is first 87 * claimed. 88 * @bus: ID of the bus that the slave is attached to. For 89 * driver model this is the sequence number of the SPI 90 * bus (bus->seq) so does not need to be stored 91 * @cs: ID of the chip select connected to the slave. 92 * @mode: SPI mode to use for this slave (see SPI mode flags) 93 * @wordlen: Size of SPI word in number of bits 94 * @max_write_size: If non-zero, the maximum number of bytes which can 95 * be written at once, excluding command bytes. 96 * @memory_map: Address of read-only SPI flash access. 97 * @option: Varies SPI bus options - separate, shared bus. 98 * @flags: Indication of SPI flags. 99 */ 100 struct spi_slave { 101 #ifdef CONFIG_DM_SPI 102 struct udevice *dev; /* struct spi_slave is dev->parentdata */ 103 uint max_hz; 104 uint speed; 105 #else 106 unsigned int bus; 107 unsigned int cs; 108 #endif 109 uint mode; 110 unsigned int wordlen; 111 unsigned int max_write_size; 112 void *memory_map; 113 u8 option; 114 115 u8 flags; 116 #define SPI_XFER_BEGIN BIT(0) /* Assert CS before transfer */ 117 #define SPI_XFER_END BIT(1) /* Deassert CS after transfer */ 118 #define SPI_XFER_ONCE (SPI_XFER_BEGIN | SPI_XFER_END) 119 #define SPI_XFER_MMAP BIT(2) /* Memory Mapped start */ 120 #define SPI_XFER_MMAP_END BIT(3) /* Memory Mapped End */ 121 #define SPI_XFER_U_PAGE BIT(4) 122 }; 123 124 /** 125 * Initialization, must be called once on start up. 126 * 127 * TODO: I don't think we really need this. 128 */ 129 void spi_init(void); 130 131 /** 132 * spi_do_alloc_slave - Allocate a new SPI slave (internal) 133 * 134 * Allocate and zero all fields in the spi slave, and set the bus/chip 135 * select. Use the helper macro spi_alloc_slave() to call this. 136 * 137 * @offset: Offset of struct spi_slave within slave structure. 138 * @size: Size of slave structure. 139 * @bus: Bus ID of the slave chip. 140 * @cs: Chip select ID of the slave chip on the specified bus. 141 */ 142 void *spi_do_alloc_slave(int offset, int size, unsigned int bus, 143 unsigned int cs); 144 145 /** 146 * spi_alloc_slave - Allocate a new SPI slave 147 * 148 * Allocate and zero all fields in the spi slave, and set the bus/chip 149 * select. 150 * 151 * @_struct: Name of structure to allocate (e.g. struct tegra_spi). 152 * This structure must contain a member 'struct spi_slave *slave'. 153 * @bus: Bus ID of the slave chip. 154 * @cs: Chip select ID of the slave chip on the specified bus. 155 */ 156 #define spi_alloc_slave(_struct, bus, cs) \ 157 spi_do_alloc_slave(offsetof(_struct, slave), \ 158 sizeof(_struct), bus, cs) 159 160 /** 161 * spi_alloc_slave_base - Allocate a new SPI slave with no private data 162 * 163 * Allocate and zero all fields in the spi slave, and set the bus/chip 164 * select. 165 * 166 * @bus: Bus ID of the slave chip. 167 * @cs: Chip select ID of the slave chip on the specified bus. 168 */ 169 #define spi_alloc_slave_base(bus, cs) \ 170 spi_do_alloc_slave(0, sizeof(struct spi_slave), bus, cs) 171 172 /** 173 * Set up communications parameters for a SPI slave. 174 * 175 * This must be called once for each slave. Note that this function 176 * usually doesn't touch any actual hardware, it only initializes the 177 * contents of spi_slave so that the hardware can be easily 178 * initialized later. 179 * 180 * @bus: Bus ID of the slave chip. 181 * @cs: Chip select ID of the slave chip on the specified bus. 182 * @max_hz: Maximum SCK rate in Hz. 183 * @mode: Clock polarity, clock phase and other parameters. 184 * 185 * Returns: A spi_slave reference that can be used in subsequent SPI 186 * calls, or NULL if one or more of the parameters are not supported. 187 */ 188 struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, 189 unsigned int max_hz, unsigned int mode); 190 191 /** 192 * Free any memory associated with a SPI slave. 193 * 194 * @slave: The SPI slave 195 */ 196 void spi_free_slave(struct spi_slave *slave); 197 198 /** 199 * Claim the bus and prepare it for communication with a given slave. 200 * 201 * This must be called before doing any transfers with a SPI slave. It 202 * will enable and initialize any SPI hardware as necessary, and make 203 * sure that the SCK line is in the correct idle state. It is not 204 * allowed to claim the same bus for several slaves without releasing 205 * the bus in between. 206 * 207 * @slave: The SPI slave 208 * 209 * Returns: 0 if the bus was claimed successfully, or a negative value 210 * if it wasn't. 211 */ 212 int spi_claim_bus(struct spi_slave *slave); 213 214 /** 215 * Release the SPI bus 216 * 217 * This must be called once for every call to spi_claim_bus() after 218 * all transfers have finished. It may disable any SPI hardware as 219 * appropriate. 220 * 221 * @slave: The SPI slave 222 */ 223 void spi_release_bus(struct spi_slave *slave); 224 225 /** 226 * Set the word length for SPI transactions 227 * 228 * Set the word length (number of bits per word) for SPI transactions. 229 * 230 * @slave: The SPI slave 231 * @wordlen: The number of bits in a word 232 * 233 * Returns: 0 on success, -1 on failure. 234 */ 235 int spi_set_wordlen(struct spi_slave *slave, unsigned int wordlen); 236 237 /** 238 * SPI transfer 239 * 240 * This writes "bitlen" bits out the SPI MOSI port and simultaneously clocks 241 * "bitlen" bits in the SPI MISO port. That's just the way SPI works. 242 * 243 * The source of the outgoing bits is the "dout" parameter and the 244 * destination of the input bits is the "din" parameter. Note that "dout" 245 * and "din" can point to the same memory location, in which case the 246 * input data overwrites the output data (since both are buffered by 247 * temporary variables, this is OK). 248 * 249 * spi_xfer() interface: 250 * @slave: The SPI slave which will be sending/receiving the data. 251 * @bitlen: How many bits to write and read. 252 * @dout: Pointer to a string of bits to send out. The bits are 253 * held in a byte array and are sent MSB first. 254 * @din: Pointer to a string of bits that will be filled in. 255 * @flags: A bitwise combination of SPI_XFER_* flags. 256 * 257 * Returns: 0 on success, not 0 on failure 258 */ 259 int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, 260 void *din, unsigned long flags); 261 262 /* Copy memory mapped data */ 263 void spi_flash_copy_mmap(void *data, void *offset, size_t len); 264 265 /** 266 * Determine if a SPI chipselect is valid. 267 * This function is provided by the board if the low-level SPI driver 268 * needs it to determine if a given chipselect is actually valid. 269 * 270 * Returns: 1 if bus:cs identifies a valid chip on this board, 0 271 * otherwise. 272 */ 273 int spi_cs_is_valid(unsigned int bus, unsigned int cs); 274 275 #ifndef CONFIG_DM_SPI 276 /** 277 * Activate a SPI chipselect. 278 * This function is provided by the board code when using a driver 279 * that can't control its chipselects automatically (e.g. 280 * common/soft_spi.c). When called, it should activate the chip select 281 * to the device identified by "slave". 282 */ 283 void spi_cs_activate(struct spi_slave *slave); 284 285 /** 286 * Deactivate a SPI chipselect. 287 * This function is provided by the board code when using a driver 288 * that can't control its chipselects automatically (e.g. 289 * common/soft_spi.c). When called, it should deactivate the chip 290 * select to the device identified by "slave". 291 */ 292 void spi_cs_deactivate(struct spi_slave *slave); 293 294 /** 295 * Set transfer speed. 296 * This sets a new speed to be applied for next spi_xfer(). 297 * @slave: The SPI slave 298 * @hz: The transfer speed 299 */ 300 void spi_set_speed(struct spi_slave *slave, uint hz); 301 #endif 302 303 /** 304 * Write 8 bits, then read 8 bits. 305 * @slave: The SPI slave we're communicating with 306 * @byte: Byte to be written 307 * 308 * Returns: The value that was read, or a negative value on error. 309 * 310 * TODO: This function probably shouldn't be inlined. 311 */ 312 static inline int spi_w8r8(struct spi_slave *slave, unsigned char byte) 313 { 314 unsigned char dout[2]; 315 unsigned char din[2]; 316 int ret; 317 318 dout[0] = byte; 319 dout[1] = 0; 320 321 ret = spi_xfer(slave, 16, dout, din, SPI_XFER_BEGIN | SPI_XFER_END); 322 return ret < 0 ? ret : din[1]; 323 } 324 325 /** 326 * Set up a SPI slave for a particular device tree node 327 * 328 * This calls spi_setup_slave() with the correct bus number. Call 329 * spi_free_slave() to free it later. 330 * 331 * @param blob: Device tree blob 332 * @param slave_node: Slave node to use 333 * @param spi_node: SPI peripheral node to use 334 * @return pointer to new spi_slave structure 335 */ 336 struct spi_slave *spi_setup_slave_fdt(const void *blob, int slave_node, 337 int spi_node); 338 339 /** 340 * spi_base_setup_slave_fdt() - helper function to set up a SPI slace 341 * 342 * This decodes SPI properties from the slave node to determine the 343 * chip select and SPI parameters. 344 * 345 * @blob: Device tree blob 346 * @busnum: Bus number to use 347 * @node: Device tree node for the SPI bus 348 */ 349 struct spi_slave *spi_base_setup_slave_fdt(const void *blob, int busnum, 350 int node); 351 352 #ifdef CONFIG_DM_SPI 353 354 /** 355 * struct spi_cs_info - Information about a bus chip select 356 * 357 * @dev: Connected device, or NULL if none 358 */ 359 struct spi_cs_info { 360 struct udevice *dev; 361 }; 362 363 /** 364 * struct struct dm_spi_ops - Driver model SPI operations 365 * 366 * The uclass interface is implemented by all SPI devices which use 367 * driver model. 368 */ 369 struct dm_spi_ops { 370 /** 371 * Claim the bus and prepare it for communication. 372 * 373 * The device provided is the slave device. It's parent controller 374 * will be used to provide the communication. 375 * 376 * This must be called before doing any transfers with a SPI slave. It 377 * will enable and initialize any SPI hardware as necessary, and make 378 * sure that the SCK line is in the correct idle state. It is not 379 * allowed to claim the same bus for several slaves without releasing 380 * the bus in between. 381 * 382 * @dev: The SPI slave 383 * 384 * Returns: 0 if the bus was claimed successfully, or a negative value 385 * if it wasn't. 386 */ 387 int (*claim_bus)(struct udevice *dev); 388 389 /** 390 * Release the SPI bus 391 * 392 * This must be called once for every call to spi_claim_bus() after 393 * all transfers have finished. It may disable any SPI hardware as 394 * appropriate. 395 * 396 * @dev: The SPI slave 397 */ 398 int (*release_bus)(struct udevice *dev); 399 400 /** 401 * Set the word length for SPI transactions 402 * 403 * Set the word length (number of bits per word) for SPI transactions. 404 * 405 * @bus: The SPI slave 406 * @wordlen: The number of bits in a word 407 * 408 * Returns: 0 on success, -ve on failure. 409 */ 410 int (*set_wordlen)(struct udevice *dev, unsigned int wordlen); 411 412 /** 413 * SPI transfer 414 * 415 * This writes "bitlen" bits out the SPI MOSI port and simultaneously 416 * clocks "bitlen" bits in the SPI MISO port. That's just the way SPI 417 * works. 418 * 419 * The source of the outgoing bits is the "dout" parameter and the 420 * destination of the input bits is the "din" parameter. Note that 421 * "dout" and "din" can point to the same memory location, in which 422 * case the input data overwrites the output data (since both are 423 * buffered by temporary variables, this is OK). 424 * 425 * spi_xfer() interface: 426 * @dev: The slave device to communicate with 427 * @bitlen: How many bits to write and read. 428 * @dout: Pointer to a string of bits to send out. The bits are 429 * held in a byte array and are sent MSB first. 430 * @din: Pointer to a string of bits that will be filled in. 431 * @flags: A bitwise combination of SPI_XFER_* flags. 432 * 433 * Returns: 0 on success, not -1 on failure 434 */ 435 int (*xfer)(struct udevice *dev, unsigned int bitlen, const void *dout, 436 void *din, unsigned long flags); 437 438 /** 439 * Set transfer speed. 440 * This sets a new speed to be applied for next spi_xfer(). 441 * @bus: The SPI bus 442 * @hz: The transfer speed 443 * @return 0 if OK, -ve on error 444 */ 445 int (*set_speed)(struct udevice *bus, uint hz); 446 447 /** 448 * Set the SPI mode/flags 449 * 450 * It is unclear if we want to set speed and mode together instead 451 * of separately. 452 * 453 * @bus: The SPI bus 454 * @mode: Requested SPI mode (SPI_... flags) 455 * @return 0 if OK, -ve on error 456 */ 457 int (*set_mode)(struct udevice *bus, uint mode); 458 459 /** 460 * Get information on a chip select 461 * 462 * This is only called when the SPI uclass does not know about a 463 * chip select, i.e. it has no attached device. It gives the driver 464 * a chance to allow activity on that chip select even so. 465 * 466 * @bus: The SPI bus 467 * @cs: The chip select (0..n-1) 468 * @info: Returns information about the chip select, if valid. 469 * On entry info->dev is NULL 470 * @return 0 if OK (and @info is set up), -ENODEV if the chip select 471 * is invalid, other -ve value on error 472 */ 473 int (*cs_info)(struct udevice *bus, uint cs, struct spi_cs_info *info); 474 }; 475 476 struct dm_spi_emul_ops { 477 /** 478 * SPI transfer 479 * 480 * This writes "bitlen" bits out the SPI MOSI port and simultaneously 481 * clocks "bitlen" bits in the SPI MISO port. That's just the way SPI 482 * works. Here the device is a slave. 483 * 484 * The source of the outgoing bits is the "dout" parameter and the 485 * destination of the input bits is the "din" parameter. Note that 486 * "dout" and "din" can point to the same memory location, in which 487 * case the input data overwrites the output data (since both are 488 * buffered by temporary variables, this is OK). 489 * 490 * spi_xfer() interface: 491 * @slave: The SPI slave which will be sending/receiving the data. 492 * @bitlen: How many bits to write and read. 493 * @dout: Pointer to a string of bits sent to the device. The 494 * bits are held in a byte array and are sent MSB first. 495 * @din: Pointer to a string of bits that will be sent back to 496 * the master. 497 * @flags: A bitwise combination of SPI_XFER_* flags. 498 * 499 * Returns: 0 on success, not -1 on failure 500 */ 501 int (*xfer)(struct udevice *slave, unsigned int bitlen, 502 const void *dout, void *din, unsigned long flags); 503 }; 504 505 /** 506 * spi_find_bus_and_cs() - Find bus and slave devices by number 507 * 508 * Given a bus number and chip select, this finds the corresponding bus 509 * device and slave device. Neither device is activated by this function, 510 * although they may have been activated previously. 511 * 512 * @busnum: SPI bus number 513 * @cs: Chip select to look for 514 * @busp: Returns bus device 515 * @devp: Return slave device 516 * @return 0 if found, -ENODEV on error 517 */ 518 int spi_find_bus_and_cs(int busnum, int cs, struct udevice **busp, 519 struct udevice **devp); 520 521 /** 522 * spi_get_bus_and_cs() - Find and activate bus and slave devices by number 523 * 524 * Given a bus number and chip select, this finds the corresponding bus 525 * device and slave device. 526 * 527 * If no such slave exists, and drv_name is not NULL, then a new slave device 528 * is automatically bound on this chip select. 529 * 530 * Ths new slave device is probed ready for use with the given speed and mode. 531 * 532 * @busnum: SPI bus number 533 * @cs: Chip select to look for 534 * @speed: SPI speed to use for this slave 535 * @mode: SPI mode to use for this slave 536 * @drv_name: Name of driver to attach to this chip select 537 * @dev_name: Name of the new device thus created 538 * @busp: Returns bus device 539 * @devp: Return slave device 540 * @return 0 if found, -ve on error 541 */ 542 int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, 543 const char *drv_name, const char *dev_name, 544 struct udevice **busp, struct spi_slave **devp); 545 546 /** 547 * spi_chip_select() - Get the chip select for a slave 548 * 549 * @return the chip select this slave is attached to 550 */ 551 int spi_chip_select(struct udevice *slave); 552 553 /** 554 * spi_find_chip_select() - Find the slave attached to chip select 555 * 556 * @bus: SPI bus to search 557 * @cs: Chip select to look for 558 * @devp: Returns the slave device if found 559 * @return 0 if found, -ENODEV on error 560 */ 561 int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp); 562 563 /** 564 * spi_slave_ofdata_to_platdata() - decode standard SPI platform data 565 * 566 * This decodes the speed and mode for a slave from a device tree node 567 * 568 * @blob: Device tree blob 569 * @node: Node offset to read from 570 * @plat: Place to put the decoded information 571 */ 572 int spi_slave_ofdata_to_platdata(const void *blob, int node, 573 struct dm_spi_slave_platdata *plat); 574 575 /** 576 * spi_cs_info() - Check information on a chip select 577 * 578 * This checks a particular chip select on a bus to see if it has a device 579 * attached, or is even valid. 580 * 581 * @bus: The SPI bus 582 * @cs: The chip select (0..n-1) 583 * @info: Returns information about the chip select, if valid 584 * @return 0 if OK (and @info is set up), -ENODEV if the chip select 585 * is invalid, other -ve value on error 586 */ 587 int spi_cs_info(struct udevice *bus, uint cs, struct spi_cs_info *info); 588 589 struct sandbox_state; 590 591 /** 592 * sandbox_spi_get_emul() - get an emulator for a SPI slave 593 * 594 * This provides a way to attach an emulated SPI device to a particular SPI 595 * slave, so that xfer() operations on the slave will be handled by the 596 * emulator. If a emulator already exists on that chip select it is returned. 597 * Otherwise one is created. 598 * 599 * @state: Sandbox state 600 * @bus: SPI bus requesting the emulator 601 * @slave: SPI slave device requesting the emulator 602 * @emuip: Returns pointer to emulator 603 * @return 0 if OK, -ve on error 604 */ 605 int sandbox_spi_get_emul(struct sandbox_state *state, 606 struct udevice *bus, struct udevice *slave, 607 struct udevice **emulp); 608 609 /** 610 * Claim the bus and prepare it for communication with a given slave. 611 * 612 * This must be called before doing any transfers with a SPI slave. It 613 * will enable and initialize any SPI hardware as necessary, and make 614 * sure that the SCK line is in the correct idle state. It is not 615 * allowed to claim the same bus for several slaves without releasing 616 * the bus in between. 617 * 618 * @dev: The SPI slave device 619 * 620 * Returns: 0 if the bus was claimed successfully, or a negative value 621 * if it wasn't. 622 */ 623 int dm_spi_claim_bus(struct udevice *dev); 624 625 /** 626 * Release the SPI bus 627 * 628 * This must be called once for every call to dm_spi_claim_bus() after 629 * all transfers have finished. It may disable any SPI hardware as 630 * appropriate. 631 * 632 * @slave: The SPI slave device 633 */ 634 void dm_spi_release_bus(struct udevice *dev); 635 636 /** 637 * SPI transfer 638 * 639 * This writes "bitlen" bits out the SPI MOSI port and simultaneously clocks 640 * "bitlen" bits in the SPI MISO port. That's just the way SPI works. 641 * 642 * The source of the outgoing bits is the "dout" parameter and the 643 * destination of the input bits is the "din" parameter. Note that "dout" 644 * and "din" can point to the same memory location, in which case the 645 * input data overwrites the output data (since both are buffered by 646 * temporary variables, this is OK). 647 * 648 * dm_spi_xfer() interface: 649 * @dev: The SPI slave device which will be sending/receiving the data. 650 * @bitlen: How many bits to write and read. 651 * @dout: Pointer to a string of bits to send out. The bits are 652 * held in a byte array and are sent MSB first. 653 * @din: Pointer to a string of bits that will be filled in. 654 * @flags: A bitwise combination of SPI_XFER_* flags. 655 * 656 * Returns: 0 on success, not 0 on failure 657 */ 658 int dm_spi_xfer(struct udevice *dev, unsigned int bitlen, 659 const void *dout, void *din, unsigned long flags); 660 661 /* Access the operations for a SPI device */ 662 #define spi_get_ops(dev) ((struct dm_spi_ops *)(dev)->driver->ops) 663 #define spi_emul_get_ops(dev) ((struct dm_spi_emul_ops *)(dev)->driver->ops) 664 #endif /* CONFIG_DM_SPI */ 665 666 #endif /* _SPI_H_ */ 667