1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2014 Freescale Semiconductor, Inc.
4 * Synced from Linux v4.19
7 #ifndef __LINUX_MTD_SPI_NOR_H
8 #define __LINUX_MTD_SPI_NOR_H
10 #include <linux/bitops.h>
11 #include <linux/mtd/cfi.h>
12 #include <linux/mtd/mtd.h>
17 * The first byte returned from the flash after sending opcode SPINOR_OP_RDID.
18 * Sometimes these are the same as CFI IDs, but sometimes they aren't.
20 #define SNOR_MFR_ATMEL CFI_MFR_ATMEL
21 #define SNOR_MFR_GIGADEVICE 0xc8
22 #define SNOR_MFR_INTEL CFI_MFR_INTEL
23 #define SNOR_MFR_ST CFI_MFR_ST /* ST Micro <--> Micron */
24 #define SNOR_MFR_MICRON CFI_MFR_MICRON /* ST Micro <--> Micron */
25 #define SNOR_MFR_ISSI CFI_MFR_PMC
26 #define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX
27 #define SNOR_MFR_SPANSION CFI_MFR_AMD
28 #define SNOR_MFR_SST CFI_MFR_SST
29 #define SNOR_MFR_WINBOND 0xef /* Also used by some Spansion */
32 * Note on opcode nomenclature: some opcodes have a format like
33 * SPINOR_OP_FUNCTION{4,}_x_y_z. The numbers x, y, and z stand for the number
34 * of I/O lines used for the opcode, address, and data (respectively). The
35 * FUNCTION has an optional suffix of '4', to represent an opcode which
36 * requires a 4-byte (32-bit) address.
40 #define SPINOR_OP_WREN 0x06 /* Write enable */
41 #define SPINOR_OP_RDSR 0x05 /* Read status register */
42 #define SPINOR_OP_WRSR 0x01 /* Write status register 1 byte */
43 #define SPINOR_OP_RDSR2 0x3f /* Read status register 2 */
44 #define SPINOR_OP_WRSR2 0x3e /* Write status register 2 */
45 #define SPINOR_OP_READ 0x03 /* Read data bytes (low frequency) */
46 #define SPINOR_OP_READ_FAST 0x0b /* Read data bytes (high frequency) */
47 #define SPINOR_OP_READ_1_1_2 0x3b /* Read data bytes (Dual Output SPI) */
48 #define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */
49 #define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad Output SPI) */
50 #define SPINOR_OP_READ_1_4_4 0xeb /* Read data bytes (Quad I/O SPI) */
51 #define SPINOR_OP_READ_1_1_8 0x8b /* Read data bytes (Octal Output SPI) */
52 #define SPINOR_OP_READ_1_8_8 0xcb /* Read data bytes (Octal I/O SPI) */
53 #define SPINOR_OP_PP 0x02 /* Page program (up to 256 bytes) */
54 #define SPINOR_OP_PP_1_1_4 0x32 /* Quad page program */
55 #define SPINOR_OP_PP_1_4_4 0x38 /* Quad page program */
56 #define SPINOR_OP_PP_1_1_8 0x82 /* Octal page program */
57 #define SPINOR_OP_PP_1_8_8 0xc2 /* Octal page program */
58 #define SPINOR_OP_BE_4K 0x20 /* Erase 4KiB block */
59 #define SPINOR_OP_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */
60 #define SPINOR_OP_BE_32K 0x52 /* Erase 32KiB block */
61 #define SPINOR_OP_CHIP_ERASE 0xc7 /* Erase whole flash chip */
62 #define SPINOR_OP_SE 0xd8 /* Sector erase (usually 64KiB) */
63 #define SPINOR_OP_RDID 0x9f /* Read JEDEC ID */
64 #define SPINOR_OP_RDSFDP 0x5a /* Read SFDP */
65 #define SPINOR_OP_RDCR 0x35 /* Read configuration register */
66 #define SPINOR_OP_RDFSR 0x70 /* Read flag status register */
67 #define SPINOR_OP_CLFSR 0x50 /* Clear flag status register */
68 #define SPINOR_OP_RDEAR 0xc8 /* Read Extended Address Register */
69 #define SPINOR_OP_WREAR 0xc5 /* Write Extended Address Register */
70 #define SPINOR_OP_SRSTEN 0x66 /* Software Reset Enable */
71 #define SPINOR_OP_SRST 0x99 /* Software Reset */
73 /* 4-byte address opcodes - used on Spansion and some Macronix flashes. */
74 #define SPINOR_OP_READ_4B 0x13 /* Read data bytes (low frequency) */
75 #define SPINOR_OP_READ_FAST_4B 0x0c /* Read data bytes (high frequency) */
76 #define SPINOR_OP_READ_1_1_2_4B 0x3c /* Read data bytes (Dual Output SPI) */
77 #define SPINOR_OP_READ_1_2_2_4B 0xbc /* Read data bytes (Dual I/O SPI) */
78 #define SPINOR_OP_READ_1_1_4_4B 0x6c /* Read data bytes (Quad Output SPI) */
79 #define SPINOR_OP_READ_1_4_4_4B 0xec /* Read data bytes (Quad I/O SPI) */
80 #define SPINOR_OP_READ_1_1_8_4B 0x7c /* Read data bytes (Octal Output SPI) */
81 #define SPINOR_OP_READ_1_8_8_4B 0xcc /* Read data bytes (Octal I/O SPI) */
82 #define SPINOR_OP_PP_4B 0x12 /* Page program (up to 256 bytes) */
83 #define SPINOR_OP_PP_1_1_4_4B 0x34 /* Quad page program */
84 #define SPINOR_OP_PP_1_4_4_4B 0x3e /* Quad page program */
85 #define SPINOR_OP_PP_1_1_8_4B 0x84 /* Octal page program */
86 #define SPINOR_OP_PP_1_8_8_4B 0x8e /* Octal page program */
87 #define SPINOR_OP_BE_4K_4B 0x21 /* Erase 4KiB block */
88 #define SPINOR_OP_BE_32K_4B 0x5c /* Erase 32KiB block */
89 #define SPINOR_OP_SE_4B 0xdc /* Sector erase (usually 64KiB) */
91 /* Double Transfer Rate opcodes - defined in JEDEC JESD216B. */
92 #define SPINOR_OP_READ_1_1_1_DTR 0x0d
93 #define SPINOR_OP_READ_1_2_2_DTR 0xbd
94 #define SPINOR_OP_READ_1_4_4_DTR 0xed
96 #define SPINOR_OP_READ_1_1_1_DTR_4B 0x0e
97 #define SPINOR_OP_READ_1_2_2_DTR_4B 0xbe
98 #define SPINOR_OP_READ_1_4_4_DTR_4B 0xee
100 /* Used for SST flashes only. */
101 #define SPINOR_OP_BP 0x02 /* Byte program */
102 #define SPINOR_OP_WRDI 0x04 /* Write disable */
103 #define SPINOR_OP_AAI_WP 0xad /* Auto address increment word program */
105 /* Used for SST26* flashes only. */
106 #define SPINOR_OP_READ_BPR 0x72 /* Read block protection register */
107 #define SPINOR_OP_WRITE_BPR 0x42 /* Write block protection register */
109 /* Used for S3AN flashes only */
110 #define SPINOR_OP_XSE 0x50 /* Sector erase */
111 #define SPINOR_OP_XPP 0x82 /* Page program */
112 #define SPINOR_OP_XRDSR 0xd7 /* Read status register */
114 #define XSR_PAGESIZE BIT(0) /* Page size in Po2 or Linear */
115 #define XSR_RDY BIT(7) /* Ready */
117 /* Used for Macronix and Winbond flashes. */
118 #define SPINOR_OP_EN4B 0xb7 /* Enter 4-byte mode */
119 #define SPINOR_OP_EX4B 0xe9 /* Exit 4-byte mode */
121 /* Used for Spansion flashes only. */
122 #define SPINOR_OP_BRWR 0x17 /* Bank register write */
123 #define SPINOR_OP_BRRD 0x16 /* Bank register read */
124 #define SPINOR_OP_CLSR 0x30 /* Clear status register 1 */
126 /* Used for Micron flashes only. */
127 #define SPINOR_OP_RD_EVCR 0x65 /* Read EVCR register */
128 #define SPINOR_OP_WD_EVCR 0x61 /* Write EVCR register */
130 /* Status Register bits. */
131 #define SR_WIP BIT(0) /* Write in progress */
132 #define SR_WEL BIT(1) /* Write enable latch */
133 /* meaning of other SR_* bits may differ between vendors */
134 #define SR_BP0 BIT(2) /* Block protect 0 */
135 #define SR_BP1 BIT(3) /* Block protect 1 */
136 #define SR_BP2 BIT(4) /* Block protect 2 */
137 #define SR_TB BIT(5) /* Top/Bottom protect */
138 #define SR_SRWD BIT(7) /* SR write protect */
139 /* Spansion/Cypress specific status bits */
140 #define SR_E_ERR BIT(5)
141 #define SR_P_ERR BIT(6)
143 #define SR_QUAD_EN_MX BIT(6) /* Macronix Quad I/O */
145 /* Enhanced Volatile Configuration Register bits */
146 #define EVCR_QUAD_EN_MICRON BIT(7) /* Micron Quad I/O */
148 /* Flag Status Register bits */
149 #define FSR_READY BIT(7) /* Device status, 0 = Busy, 1 = Ready */
150 #define FSR_E_ERR BIT(5) /* Erase operation status */
151 #define FSR_P_ERR BIT(4) /* Program operation status */
152 #define FSR_PT_ERR BIT(1) /* Protection error bit */
154 /* Configuration Register bits. */
155 #define CR_QUAD_EN_SPAN BIT(1) /* Spansion Quad I/O */
157 /* Status Register 2 bits. */
158 #define SR2_QUAD_EN_BIT7 BIT(7)
160 /* Supported SPI protocols */
161 #define SNOR_PROTO_INST_MASK GENMASK(23, 16)
162 #define SNOR_PROTO_INST_SHIFT 16
163 #define SNOR_PROTO_INST(_nbits) \
164 ((((unsigned long)(_nbits)) << SNOR_PROTO_INST_SHIFT) & \
165 SNOR_PROTO_INST_MASK)
167 #define SNOR_PROTO_ADDR_MASK GENMASK(15, 8)
168 #define SNOR_PROTO_ADDR_SHIFT 8
169 #define SNOR_PROTO_ADDR(_nbits) \
170 ((((unsigned long)(_nbits)) << SNOR_PROTO_ADDR_SHIFT) & \
171 SNOR_PROTO_ADDR_MASK)
173 #define SNOR_PROTO_DATA_MASK GENMASK(7, 0)
174 #define SNOR_PROTO_DATA_SHIFT 0
175 #define SNOR_PROTO_DATA(_nbits) \
176 ((((unsigned long)(_nbits)) << SNOR_PROTO_DATA_SHIFT) & \
177 SNOR_PROTO_DATA_MASK)
179 #define SNOR_PROTO_IS_DTR BIT(24) /* Double Transfer Rate */
181 #define SNOR_PROTO_STR(_inst_nbits, _addr_nbits, _data_nbits) \
182 (SNOR_PROTO_INST(_inst_nbits) | \
183 SNOR_PROTO_ADDR(_addr_nbits) | \
184 SNOR_PROTO_DATA(_data_nbits))
185 #define SNOR_PROTO_DTR(_inst_nbits, _addr_nbits, _data_nbits) \
186 (SNOR_PROTO_IS_DTR | \
187 SNOR_PROTO_STR(_inst_nbits, _addr_nbits, _data_nbits))
189 enum spi_nor_protocol {
190 SNOR_PROTO_1_1_1 = SNOR_PROTO_STR(1, 1, 1),
191 SNOR_PROTO_1_1_2 = SNOR_PROTO_STR(1, 1, 2),
192 SNOR_PROTO_1_1_4 = SNOR_PROTO_STR(1, 1, 4),
193 SNOR_PROTO_1_1_8 = SNOR_PROTO_STR(1, 1, 8),
194 SNOR_PROTO_1_2_2 = SNOR_PROTO_STR(1, 2, 2),
195 SNOR_PROTO_1_4_4 = SNOR_PROTO_STR(1, 4, 4),
196 SNOR_PROTO_1_8_8 = SNOR_PROTO_STR(1, 8, 8),
197 SNOR_PROTO_2_2_2 = SNOR_PROTO_STR(2, 2, 2),
198 SNOR_PROTO_4_4_4 = SNOR_PROTO_STR(4, 4, 4),
199 SNOR_PROTO_8_8_8 = SNOR_PROTO_STR(8, 8, 8),
201 SNOR_PROTO_1_1_1_DTR = SNOR_PROTO_DTR(1, 1, 1),
202 SNOR_PROTO_1_2_2_DTR = SNOR_PROTO_DTR(1, 2, 2),
203 SNOR_PROTO_1_4_4_DTR = SNOR_PROTO_DTR(1, 4, 4),
204 SNOR_PROTO_1_8_8_DTR = SNOR_PROTO_DTR(1, 8, 8),
205 SNOR_PROTO_8_8_8_DTR = SNOR_PROTO_DTR(8, 8, 8),
208 static inline bool spi_nor_protocol_is_dtr(enum spi_nor_protocol proto)
210 return !!(proto & SNOR_PROTO_IS_DTR);
213 static inline u8 spi_nor_get_protocol_inst_nbits(enum spi_nor_protocol proto)
215 return ((unsigned long)(proto & SNOR_PROTO_INST_MASK)) >>
216 SNOR_PROTO_INST_SHIFT;
219 static inline u8 spi_nor_get_protocol_addr_nbits(enum spi_nor_protocol proto)
221 return ((unsigned long)(proto & SNOR_PROTO_ADDR_MASK)) >>
222 SNOR_PROTO_ADDR_SHIFT;
225 static inline u8 spi_nor_get_protocol_data_nbits(enum spi_nor_protocol proto)
227 return ((unsigned long)(proto & SNOR_PROTO_DATA_MASK)) >>
228 SNOR_PROTO_DATA_SHIFT;
231 static inline u8 spi_nor_get_protocol_width(enum spi_nor_protocol proto)
233 return spi_nor_get_protocol_data_nbits(proto);
236 #define SPI_NOR_MAX_CMD_SIZE 8
238 SPI_NOR_OPS_READ = 0,
245 enum spi_nor_option_flags {
246 SNOR_F_USE_FSR = BIT(0),
247 SNOR_F_HAS_SR_TB = BIT(1),
248 SNOR_F_NO_OP_CHIP_ERASE = BIT(2),
249 SNOR_F_S3AN_ADDR_DEFAULT = BIT(3),
250 SNOR_F_READY_XSR_RDY = BIT(4),
251 SNOR_F_USE_CLSR = BIT(5),
252 SNOR_F_BROKEN_RESET = BIT(6),
253 SNOR_F_SOFT_RESET = BIT(7),
259 * struct spi_nor_hwcaps - Structure for describing the hardware capabilies
260 * supported by the SPI controller (bus master).
261 * @mask: the bitmask listing all the supported hw capabilies
263 struct spi_nor_hwcaps {
268 *(Fast) Read capabilities.
269 * MUST be ordered by priority: the higher bit position, the higher priority.
270 * As a matter of performances, it is relevant to use Octo SPI protocols first,
271 * then Quad SPI protocols before Dual SPI protocols, Fast Read and lastly
274 #define SNOR_HWCAPS_READ_MASK GENMASK(15, 0)
275 #define SNOR_HWCAPS_READ BIT(0)
276 #define SNOR_HWCAPS_READ_FAST BIT(1)
277 #define SNOR_HWCAPS_READ_1_1_1_DTR BIT(2)
279 #define SNOR_HWCAPS_READ_DUAL GENMASK(6, 3)
280 #define SNOR_HWCAPS_READ_1_1_2 BIT(3)
281 #define SNOR_HWCAPS_READ_1_2_2 BIT(4)
282 #define SNOR_HWCAPS_READ_2_2_2 BIT(5)
283 #define SNOR_HWCAPS_READ_1_2_2_DTR BIT(6)
285 #define SNOR_HWCAPS_READ_QUAD GENMASK(10, 7)
286 #define SNOR_HWCAPS_READ_1_1_4 BIT(7)
287 #define SNOR_HWCAPS_READ_1_4_4 BIT(8)
288 #define SNOR_HWCAPS_READ_4_4_4 BIT(9)
289 #define SNOR_HWCAPS_READ_1_4_4_DTR BIT(10)
291 #define SNOR_HWCPAS_READ_OCTO GENMASK(15, 11)
292 #define SNOR_HWCAPS_READ_1_1_8 BIT(11)
293 #define SNOR_HWCAPS_READ_1_8_8 BIT(12)
294 #define SNOR_HWCAPS_READ_8_8_8 BIT(13)
295 #define SNOR_HWCAPS_READ_1_8_8_DTR BIT(14)
296 #define SNOR_HWCAPS_READ_8_8_8_DTR BIT(15)
299 * Page Program capabilities.
300 * MUST be ordered by priority: the higher bit position, the higher priority.
301 * Like (Fast) Read capabilities, Octo/Quad SPI protocols are preferred to the
302 * legacy SPI 1-1-1 protocol.
303 * Note that Dual Page Programs are not supported because there is no existing
304 * JEDEC/SFDP standard to define them. Also at this moment no SPI flash memory
305 * implements such commands.
307 #define SNOR_HWCAPS_PP_MASK GENMASK(23, 16)
308 #define SNOR_HWCAPS_PP BIT(16)
310 #define SNOR_HWCAPS_PP_QUAD GENMASK(19, 17)
311 #define SNOR_HWCAPS_PP_1_1_4 BIT(17)
312 #define SNOR_HWCAPS_PP_1_4_4 BIT(18)
313 #define SNOR_HWCAPS_PP_4_4_4 BIT(19)
315 #define SNOR_HWCAPS_PP_OCTO GENMASK(23, 20)
316 #define SNOR_HWCAPS_PP_1_1_8 BIT(20)
317 #define SNOR_HWCAPS_PP_1_8_8 BIT(21)
318 #define SNOR_HWCAPS_PP_8_8_8 BIT(22)
319 #define SNOR_HWCAPS_PP_8_8_8_DTR BIT(23)
321 #define SNOR_HWCAPS_X_X_X (SNOR_HWCAPS_READ_2_2_2 | \
322 SNOR_HWCAPS_READ_4_4_4 | \
323 SNOR_HWCAPS_READ_8_8_8 | \
324 SNOR_HWCAPS_PP_4_4_4 | \
325 SNOR_HWCAPS_PP_8_8_8)
327 #define SNOR_HWCAPS_X_X_X_DTR (SNOR_HWCAPS_READ_8_8_8_DTR | \
328 SNOR_HWCAPS_PP_8_8_8_DTR)
330 #define SNOR_HWCAPS_DTR (SNOR_HWCAPS_READ_1_1_1_DTR | \
331 SNOR_HWCAPS_READ_1_2_2_DTR | \
332 SNOR_HWCAPS_READ_1_4_4_DTR | \
333 SNOR_HWCAPS_READ_1_8_8_DTR)
335 #define SNOR_HWCAPS_ALL (SNOR_HWCAPS_READ_MASK | \
338 struct spi_nor_read_command {
342 enum spi_nor_protocol proto;
345 struct spi_nor_pp_command {
347 enum spi_nor_protocol proto;
350 enum spi_nor_read_command_index {
353 SNOR_CMD_READ_1_1_1_DTR,
359 SNOR_CMD_READ_1_2_2_DTR,
365 SNOR_CMD_READ_1_4_4_DTR,
371 SNOR_CMD_READ_1_8_8_DTR,
372 SNOR_CMD_READ_8_8_8_DTR,
377 enum spi_nor_pp_command_index {
389 SNOR_CMD_PP_8_8_8_DTR,
394 struct spi_nor_flash_parameter {
400 struct spi_nor_hwcaps hwcaps;
401 struct spi_nor_read_command reads[SNOR_CMD_READ_MAX];
402 struct spi_nor_pp_command page_programs[SNOR_CMD_PP_MAX];
404 int (*quad_enable)(struct spi_nor *nor);
408 * enum spi_nor_cmd_ext - describes the command opcode extension in DTR mode
409 * @SPI_MEM_NOR_NONE: no extension. This is the default, and is used in Legacy
411 * @SPI_MEM_NOR_REPEAT: the extension is same as the opcode
412 * @SPI_MEM_NOR_INVERT: the extension is the bitwise inverse of the opcode
413 * @SPI_MEM_NOR_HEX: the extension is any hex value. The command and opcode
414 * combine to form a 16-bit opcode.
416 enum spi_nor_cmd_ext {
417 SPI_NOR_EXT_NONE = 0,
424 * struct flash_info - Forward declaration of a structure used internally by
430 * TODO: Remove, once all users of spi_flash interface are moved to MTD
433 * Defined below (keep this text to enable searching for spi_flash decl)
437 #define spi_flash spi_nor
441 * struct spi_nor - Structure for defining a the SPI NOR layer
442 * @mtd: point to a mtd_info structure
443 * @lock: the lock for the read/write/erase/lock/unlock operations
444 * @dev: point to a spi device, or a spi nor controller device.
445 * @info: spi-nor part JDEC MFR id and other info
446 * @manufacturer_sfdp: manufacturer specific SFDP table
447 * @page_size: the page size of the SPI NOR
448 * @addr_width: number of address bytes
449 * @erase_opcode: the opcode for erasing a sector
450 * @read_opcode: the read opcode
451 * @read_dummy: the dummy needed by the read operation
452 * @program_opcode: the program opcode
453 * @rdsr_dummy dummy cycles needed for Read Status Register command.
454 * @rdsr_addr_nbytes: dummy address bytes needed for Read Status Register
456 * @bank_read_cmd: Bank read cmd
457 * @bank_write_cmd: Bank write cmd
458 * @bank_curr: Current flash bank
459 * @sst_write_second: used by the SST write operation
460 * @flags: flag options for the current SPI-NOR (SNOR_F_*)
461 * @read_proto: the SPI protocol for read operations
462 * @write_proto: the SPI protocol for write operations
463 * @reg_proto the SPI protocol for read_reg/write_reg/erase operations
464 * @cmd_buf: used by the write_reg
465 * @cmd_ext_type: the command opcode extension for DTR mode.
466 * @fixups: flash-specific fixup hooks.
467 * @prepare: [OPTIONAL] do some preparations for the
468 * read/write/erase/lock/unlock operations
469 * @unprepare: [OPTIONAL] do some post work after the
470 * read/write/erase/lock/unlock operations
471 * @read_reg: [DRIVER-SPECIFIC] read out the register
472 * @write_reg: [DRIVER-SPECIFIC] write data to the register
473 * @read: [DRIVER-SPECIFIC] read data from the SPI NOR
474 * @write: [DRIVER-SPECIFIC] write data to the SPI NOR
475 * @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR
476 * at the offset @offs; if not provided by the driver,
477 * spi-nor will send the erase opcode via write_reg()
478 * @flash_lock: [FLASH-SPECIFIC] lock a region of the SPI NOR
479 * @flash_unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR
480 * @flash_is_locked: [FLASH-SPECIFIC] check if a region of the SPI NOR is
482 * @quad_enable: [FLASH-SPECIFIC] enables SPI NOR quad mode
483 * @octal_dtr_enable: [FLASH-SPECIFIC] enables SPI NOR octal DTR mode.
484 * @priv: the private data
489 struct spi_slave *spi;
490 const struct flash_info *info;
491 u8 *manufacturer_sfdp;
500 #ifdef CONFIG_SPI_FLASH_BAR
505 enum spi_nor_protocol read_proto;
506 enum spi_nor_protocol write_proto;
507 enum spi_nor_protocol reg_proto;
508 bool sst_write_second;
510 u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE];
511 enum spi_nor_cmd_ext cmd_ext_type;
512 struct spi_nor_fixups *fixups;
514 int (*setup)(struct spi_nor *nor, const struct flash_info *info,
515 const struct spi_nor_flash_parameter *params);
516 int (*prepare)(struct spi_nor *nor, enum spi_nor_ops ops);
517 void (*unprepare)(struct spi_nor *nor, enum spi_nor_ops ops);
518 int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
519 int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
521 ssize_t (*read)(struct spi_nor *nor, loff_t from,
522 size_t len, u_char *read_buf);
523 ssize_t (*write)(struct spi_nor *nor, loff_t to,
524 size_t len, const u_char *write_buf);
525 int (*erase)(struct spi_nor *nor, loff_t offs);
527 int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
528 int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
529 int (*flash_is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len);
530 int (*quad_enable)(struct spi_nor *nor);
531 int (*octal_dtr_enable)(struct spi_nor *nor);
534 /* Compatibility for spi_flash, remove once sf layer is merged with mtd */
542 static inline void spi_nor_set_flash_node(struct spi_nor *nor,
543 const struct device_node *np)
545 mtd_set_of_node(&nor->mtd, np);
548 static inline const struct
549 device_node *spi_nor_get_flash_node(struct spi_nor *nor)
551 return mtd_get_of_node(&nor->mtd);
553 #endif /* __UBOOT__ */
556 * spi_nor_scan() - scan the SPI NOR
557 * @nor: the spi_nor structure
559 * The drivers can use this function to scan the SPI NOR.
560 * In the scanning, it will try to get all the necessary information to
561 * fill the mtd_info{} and the spi_nor{}.
563 * Return: 0 for success, others for failure.
565 int spi_nor_scan(struct spi_nor *nor);
567 #if CONFIG_IS_ENABLED(SPI_FLASH_TINY)
568 static inline int spi_nor_remove(struct spi_nor *nor)
574 * spi_nor_remove() - perform cleanup before booting to the next stage
575 * @nor: the spi_nor structure
577 * Return: 0 for success, -errno for failure.
579 int spi_nor_remove(struct spi_nor *nor);