Lines Matching +full:half +full:- +full:bit
1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/mtd/spi-nor.h>
14 #define SFDP_PARAM_HEADER_ID(p) (((p)->id_msb << 8) | (p)->id_lsb)
16 (((p)->parameter_table_pointer[2] << 16) | \
17 ((p)->parameter_table_pointer[1] << 8) | \
18 ((p)->parameter_table_pointer[0] << 0))
19 #define SFDP_PARAM_HEADER_PARAM_LEN(p) ((p)->length * 4)
23 #define SFDP_4BAIT_ID 0xff84 /* 4-byte Address Instruction Table */
31 * Register Map Offsets for Multi-Chip
41 u8 nph; /* 0-base number of parameter headers */
50 /* The Fast Read x-y-z hardware capability in params->hwcaps.mask. */
54 * The <supported_bit> bit in <supported_dword> BFPT DWORD tells us
55 * whether the Fast Read x-y-z command is supported.
61 * The half-word at offset <setting_shift> in <setting_dword> BFPT DWORD
63 * states to be used by Fast Read x-y-z command.
68 /* The SPI protocol for this Fast Read x-y-z command. */
74 * The half-word at offset <shift> in DWORD <dword> encodes the
124 #define SMPT_DESC_TYPE_MAP BIT(1)
125 #define SMPT_DESC_END BIT(0)
134 * The <supported_bit> bit in DWORD1 of the 4BAIT tells us whether
135 * the associated 4-byte address op code is supported.
141 * spi_nor_read_raw() - raw read of serial flash memory. read_opcode,
147 * @buf: buffer where the data is copied into (dma-safe memory)
149 * Return: 0 on success, -errno otherwise.
160 return -EIO; in spi_nor_read_raw()
164 len -= ret; in spi_nor_read_raw()
170 * spi_nor_read_sfdp() - read Serial Flash Discoverable Parameters.
174 * @buf: buffer where the SFDP data are copied into (dma-safe memory)
178 * followed by a 3-byte address and 8 dummy clock cycles.
180 * Return: 0 on success, -errno otherwise.
188 read_opcode = nor->read_opcode; in spi_nor_read_sfdp()
189 addr_nbytes = nor->addr_nbytes; in spi_nor_read_sfdp()
190 read_dummy = nor->read_dummy; in spi_nor_read_sfdp()
192 nor->read_opcode = SPINOR_OP_RDSFDP; in spi_nor_read_sfdp()
193 nor->addr_nbytes = 3; in spi_nor_read_sfdp()
194 nor->read_dummy = 8; in spi_nor_read_sfdp()
198 nor->read_opcode = read_opcode; in spi_nor_read_sfdp()
199 nor->addr_nbytes = addr_nbytes; in spi_nor_read_sfdp()
200 nor->read_dummy = read_dummy; in spi_nor_read_sfdp()
206 * spi_nor_read_sfdp_dma_unsafe() - read Serial Flash Discoverable Parameters.
213 * guaranteed to be dma-safe.
215 * Return: -ENOMEM if kmalloc() fails, the return code of spi_nor_read_sfdp()
226 return -ENOMEM; in spi_nor_read_sfdp_dma_unsafe()
237 u16 half, in spi_nor_set_read_settings_from_bfpt() argument
240 read->num_mode_clocks = (half >> 5) & 0x07; in spi_nor_set_read_settings_from_bfpt()
241 read->num_wait_states = (half >> 0) & 0x1f; in spi_nor_set_read_settings_from_bfpt()
242 read->opcode = (half >> 8) & 0xff; in spi_nor_set_read_settings_from_bfpt()
243 read->proto = proto; in spi_nor_set_read_settings_from_bfpt()
247 /* Fast Read 1-1-2 */
250 SFDP_DWORD(1), BIT(16), /* Supported bit */
255 /* Fast Read 1-2-2 */
258 SFDP_DWORD(1), BIT(20), /* Supported bit */
263 /* Fast Read 2-2-2 */
266 SFDP_DWORD(5), BIT(0), /* Supported bit */
271 /* Fast Read 1-1-4 */
274 SFDP_DWORD(1), BIT(22), /* Supported bit */
279 /* Fast Read 1-4-4 */
282 SFDP_DWORD(1), BIT(21), /* Supported bit */
287 /* Fast Read 4-4-4 */
290 SFDP_DWORD(5), BIT(4), /* Supported bit */
311 * spi_nor_set_erase_settings_from_bfpt() - set erase type settings from BFPT
327 erase->idx = i; in spi_nor_set_erase_settings_from_bfpt()
332 * spi_nor_map_cmp_erase_type() - compare the map's erase types by size
333 * @l: member in the left half of the map's erase_type array
334 * @r: member in the right half of the map's erase_type array
340 * Return: the result of @l->size - @r->size
346 return left->size - right->size; in spi_nor_map_cmp_erase_type()
350 * spi_nor_sort_erase_mask() - sort erase mask
356 * BIT(0) in the sorted erase mask.
362 struct spi_nor_erase_type *erase_type = map->erase_type; in spi_nor_sort_erase_mask()
371 if (erase_type[i].size && erase_mask & BIT(erase_type[i].idx)) in spi_nor_sort_erase_mask()
372 sorted_erase_mask |= BIT(i); in spi_nor_sort_erase_mask()
378 * spi_nor_regions_sort_erase_types() - sort erase types in each region
391 struct spi_nor_erase_region *region = map->regions; in spi_nor_regions_sort_erase_types()
395 region_erase_mask = region->offset & SNOR_ERASE_TYPE_MASK; in spi_nor_regions_sort_erase_types()
401 region->offset = (region->offset & ~SNOR_ERASE_TYPE_MASK) | in spi_nor_regions_sort_erase_types()
409 * spi_nor_parse_bfpt() - read and parse the Basic Flash Parameter Table.
428 * executed to set the Quad Enable (QE) bit in some internal register of the
429 * Quad SPI memory. Indeed the QE bit, when it exists, must be set before
430 * sending any Quad SPI command to the memory. Actually, setting the QE bit
434 * Return: 0 on success, -errno otherwise.
439 struct spi_nor_flash_parameter *params = nor->params; in spi_nor_parse_bfpt()
440 struct spi_nor_erase_map *map = ¶ms->erase_map; in spi_nor_parse_bfpt()
441 struct spi_nor_erase_type *erase_type = map->erase_type; in spi_nor_parse_bfpt()
447 u16 half; in spi_nor_parse_bfpt() local
452 if (bfpt_header->length < BFPT_DWORD_MAX_JESD216) in spi_nor_parse_bfpt()
453 return -EINVAL; in spi_nor_parse_bfpt()
457 bfpt_header->length * sizeof(u32)); in spi_nor_parse_bfpt()
471 params->addr_nbytes = 3; in spi_nor_parse_bfpt()
472 params->addr_mode_nbytes = 3; in spi_nor_parse_bfpt()
476 params->addr_nbytes = 4; in spi_nor_parse_bfpt()
477 params->addr_mode_nbytes = 4; in spi_nor_parse_bfpt()
486 if (val & BIT(31)) { in spi_nor_parse_bfpt()
487 val &= ~BIT(31); in spi_nor_parse_bfpt()
490 * Prevent overflows on params->size. Anyway, a NOR of 2^64 in spi_nor_parse_bfpt()
495 return -EINVAL; in spi_nor_parse_bfpt()
497 params->size = 1ULL << val; in spi_nor_parse_bfpt()
499 params->size = val + 1; in spi_nor_parse_bfpt()
501 params->size >>= 3; /* Convert to bytes. */ in spi_nor_parse_bfpt()
508 if (!(bfpt.dwords[rd->supported_dword] & rd->supported_bit)) { in spi_nor_parse_bfpt()
509 params->hwcaps.mask &= ~rd->hwcaps; in spi_nor_parse_bfpt()
513 params->hwcaps.mask |= rd->hwcaps; in spi_nor_parse_bfpt()
514 cmd = spi_nor_hwcaps_read2cmd(rd->hwcaps); in spi_nor_parse_bfpt()
515 read = ¶ms->reads[cmd]; in spi_nor_parse_bfpt()
516 half = bfpt.dwords[rd->settings_dword] >> rd->settings_shift; in spi_nor_parse_bfpt()
517 spi_nor_set_read_settings_from_bfpt(read, half, rd->proto); in spi_nor_parse_bfpt()
525 memset(¶ms->erase_map, 0, sizeof(params->erase_map)); in spi_nor_parse_bfpt()
531 half = bfpt.dwords[er->dword] >> er->shift; in spi_nor_parse_bfpt()
532 erasesize = half & 0xff; in spi_nor_parse_bfpt()
539 opcode = (half >> 8) & 0xff; in spi_nor_parse_bfpt()
540 erase_mask |= BIT(i); in spi_nor_parse_bfpt()
544 spi_nor_init_uniform_erase_map(map, erase_mask, params->size); in spi_nor_parse_bfpt()
557 map->uniform_erase_type = map->uniform_region.offset & in spi_nor_parse_bfpt()
561 if (bfpt_header->length == BFPT_DWORD_MAX_JESD216) in spi_nor_parse_bfpt()
568 params->page_size = 1U << val; in spi_nor_parse_bfpt()
573 params->quad_enable = NULL; in spi_nor_parse_bfpt()
579 * side-effect of clearing Status Register 2. in spi_nor_parse_bfpt()
586 nor->flags |= SNOR_F_HAS_16BIT_SR | SNOR_F_NO_READ_CR; in spi_nor_parse_bfpt()
587 params->quad_enable = spi_nor_sr2_bit1_quad_enable; in spi_nor_parse_bfpt()
591 nor->flags &= ~SNOR_F_HAS_16BIT_SR; in spi_nor_parse_bfpt()
592 params->quad_enable = spi_nor_sr1_bit6_quad_enable; in spi_nor_parse_bfpt()
596 nor->flags &= ~SNOR_F_HAS_16BIT_SR; in spi_nor_parse_bfpt()
597 params->quad_enable = spi_nor_sr2_bit7_quad_enable; in spi_nor_parse_bfpt()
605 * assumption of a 16-bit Write Status (01h) command. in spi_nor_parse_bfpt()
607 nor->flags |= SNOR_F_HAS_16BIT_SR; in spi_nor_parse_bfpt()
609 params->quad_enable = spi_nor_sr2_bit1_quad_enable; in spi_nor_parse_bfpt()
613 dev_dbg(nor->dev, "BFPT QER reserved value used\n"); in spi_nor_parse_bfpt()
619 params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_brwr; in spi_nor_parse_bfpt()
621 params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_wren_en4b_ex4b; in spi_nor_parse_bfpt()
623 params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_en4b_ex4b; in spi_nor_parse_bfpt()
625 dev_dbg(nor->dev, "BFPT: 4-Byte Address Mode method is not recognized or not implemented\n"); in spi_nor_parse_bfpt()
629 nor->flags |= SNOR_F_SOFT_RESET; in spi_nor_parse_bfpt()
632 if (bfpt_header->length == BFPT_DWORD_MAX_JESD216B) in spi_nor_parse_bfpt()
635 /* Parse 1-1-8 read instruction */ in spi_nor_parse_bfpt()
642 params->hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8; in spi_nor_parse_bfpt()
643 spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ_1_1_8], in spi_nor_parse_bfpt()
648 /* Parse 1-8-8 read instruction */ in spi_nor_parse_bfpt()
655 params->hwcaps.mask |= SNOR_HWCAPS_READ_1_8_8; in spi_nor_parse_bfpt()
656 spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ_1_8_8], in spi_nor_parse_bfpt()
661 /* 8D-8D-8D command extension. */ in spi_nor_parse_bfpt()
664 nor->cmd_ext_type = SPI_NOR_EXT_REPEAT; in spi_nor_parse_bfpt()
668 nor->cmd_ext_type = SPI_NOR_EXT_INVERT; in spi_nor_parse_bfpt()
672 dev_dbg(nor->dev, "Reserved command extension used\n"); in spi_nor_parse_bfpt()
676 dev_dbg(nor->dev, "16-bit opcodes not supported\n"); in spi_nor_parse_bfpt()
677 return -EOPNOTSUPP; in spi_nor_parse_bfpt()
684 * spi_nor_smpt_addr_nbytes() - return the number of address bytes used in the
700 return nor->params->addr_mode_nbytes; in spi_nor_smpt_addr_nbytes()
705 * spi_nor_smpt_read_dummy() - return the configuration detection command read
717 return nor->read_dummy; in spi_nor_smpt_read_dummy()
722 * spi_nor_get_map_in_use() - get the configuration map in use
727 * Return: pointer to the map in use, ERR_PTR(-errno) otherwise.
740 /* Use a kmalloc'ed bounce buffer to guarantee it is DMA-able. */ in spi_nor_get_map_in_use()
743 return ERR_PTR(-ENOMEM); in spi_nor_get_map_in_use()
745 addr_nbytes = nor->addr_nbytes; in spi_nor_get_map_in_use()
746 read_dummy = nor->read_dummy; in spi_nor_get_map_in_use()
747 read_opcode = nor->read_opcode; in spi_nor_get_map_in_use()
756 nor->addr_nbytes = spi_nor_smpt_addr_nbytes(nor, smpt[i]); in spi_nor_get_map_in_use()
757 nor->read_dummy = spi_nor_smpt_read_dummy(nor, smpt[i]); in spi_nor_get_map_in_use()
758 nor->read_opcode = SMPT_CMD_OPCODE(smpt[i]); in spi_nor_get_map_in_use()
781 ret = ERR_PTR(-EINVAL); in spi_nor_get_map_in_use()
803 nor->addr_nbytes = addr_nbytes; in spi_nor_get_map_in_use()
804 nor->read_dummy = read_dummy; in spi_nor_get_map_in_use()
805 nor->read_opcode = read_opcode; in spi_nor_get_map_in_use()
811 region->offset |= SNOR_LAST_REGION; in spi_nor_region_mark_end()
816 region->offset |= SNOR_OVERLAID_REGION; in spi_nor_region_mark_overlay()
820 * spi_nor_region_check_overlay() - set overlay bit when the region is overlaid
833 if (!(erase[i].size && erase_type & BIT(erase[i].idx))) in spi_nor_region_check_overlay()
835 if (region->size & erase[i].size_mask) { in spi_nor_region_check_overlay()
843 * spi_nor_init_non_uniform_erase_map() - initialize the non-uniform erase map
847 * Return: 0 on success, -errno otherwise.
852 struct spi_nor_erase_map *map = &nor->params->erase_map; in spi_nor_init_non_uniform_erase_map()
853 struct spi_nor_erase_type *erase = map->erase_type; in spi_nor_init_non_uniform_erase_map()
866 region = devm_kcalloc(nor->dev, region_count, sizeof(*region), in spi_nor_init_non_uniform_erase_map()
869 return -ENOMEM; in spi_nor_init_non_uniform_erase_map()
870 map->regions = region; in spi_nor_init_non_uniform_erase_map()
899 spi_nor_region_mark_end(®ion[i - 1]); in spi_nor_init_non_uniform_erase_map()
901 save_uniform_erase_type = map->uniform_erase_type; in spi_nor_init_non_uniform_erase_map()
902 map->uniform_erase_type = spi_nor_sort_erase_mask(map, in spi_nor_init_non_uniform_erase_map()
910 map->uniform_erase_type = save_uniform_erase_type; in spi_nor_init_non_uniform_erase_map()
911 return -EINVAL; in spi_nor_init_non_uniform_erase_map()
920 if (!(regions_erase_type & BIT(erase[i].idx))) in spi_nor_init_non_uniform_erase_map()
927 * spi_nor_parse_smpt() - parse Sector Map Parameter Table
935 * Return: 0 on success, -errno otherwise.
947 len = smpt_header->length * sizeof(*smpt); in spi_nor_parse_smpt()
950 return -ENOMEM; in spi_nor_parse_smpt()
958 le32_to_cpu_array(smpt, smpt_header->length); in spi_nor_parse_smpt()
960 sector_map = spi_nor_get_map_in_use(nor, smpt, smpt_header->length); in spi_nor_parse_smpt()
970 spi_nor_regions_sort_erase_types(&nor->params->erase_map); in spi_nor_parse_smpt()
978 * spi_nor_parse_4bait() - parse the 4-Byte Address Instruction Table
981 * the 4-Byte Address Instruction Table length and version.
983 * Return: 0 on success, -errno otherwise.
989 { SNOR_HWCAPS_READ, BIT(0) }, in spi_nor_parse_4bait()
990 { SNOR_HWCAPS_READ_FAST, BIT(1) }, in spi_nor_parse_4bait()
991 { SNOR_HWCAPS_READ_1_1_2, BIT(2) }, in spi_nor_parse_4bait()
992 { SNOR_HWCAPS_READ_1_2_2, BIT(3) }, in spi_nor_parse_4bait()
993 { SNOR_HWCAPS_READ_1_1_4, BIT(4) }, in spi_nor_parse_4bait()
994 { SNOR_HWCAPS_READ_1_4_4, BIT(5) }, in spi_nor_parse_4bait()
995 { SNOR_HWCAPS_READ_1_1_1_DTR, BIT(13) }, in spi_nor_parse_4bait()
996 { SNOR_HWCAPS_READ_1_2_2_DTR, BIT(14) }, in spi_nor_parse_4bait()
997 { SNOR_HWCAPS_READ_1_4_4_DTR, BIT(15) }, in spi_nor_parse_4bait()
998 { SNOR_HWCAPS_READ_1_1_8, BIT(20) }, in spi_nor_parse_4bait()
999 { SNOR_HWCAPS_READ_1_8_8, BIT(21) }, in spi_nor_parse_4bait()
1002 { SNOR_HWCAPS_PP, BIT(6) }, in spi_nor_parse_4bait()
1003 { SNOR_HWCAPS_PP_1_1_4, BIT(7) }, in spi_nor_parse_4bait()
1004 { SNOR_HWCAPS_PP_1_4_4, BIT(8) }, in spi_nor_parse_4bait()
1007 { 0u /* not used */, BIT(9) }, in spi_nor_parse_4bait()
1008 { 0u /* not used */, BIT(10) }, in spi_nor_parse_4bait()
1009 { 0u /* not used */, BIT(11) }, in spi_nor_parse_4bait()
1010 { 0u /* not used */, BIT(12) }, in spi_nor_parse_4bait()
1012 struct spi_nor_flash_parameter *params = nor->params; in spi_nor_parse_4bait()
1013 struct spi_nor_pp_command *params_pp = params->page_programs; in spi_nor_parse_4bait()
1014 struct spi_nor_erase_map *map = ¶ms->erase_map; in spi_nor_parse_4bait()
1015 struct spi_nor_erase_type *erase_type = map->erase_type; in spi_nor_parse_4bait()
1021 if (param_header->major != SFDP_JESD216_MAJOR || in spi_nor_parse_4bait()
1022 param_header->length < SFDP_4BAIT_DWORD_MAX) in spi_nor_parse_4bait()
1023 return -EINVAL; in spi_nor_parse_4bait()
1025 /* Read the 4-byte Address Instruction Table. */ in spi_nor_parse_4bait()
1028 /* Use a kmalloc'ed bounce buffer to guarantee it is DMA-able. */ in spi_nor_parse_4bait()
1031 return -ENOMEM; in spi_nor_parse_4bait()
1042 * Compute the subset of (Fast) Read commands for which the 4-byte in spi_nor_parse_4bait()
1050 discard_hwcaps |= read->hwcaps; in spi_nor_parse_4bait()
1051 if ((params->hwcaps.mask & read->hwcaps) && in spi_nor_parse_4bait()
1052 (dwords[SFDP_DWORD(1)] & read->supported_bit)) in spi_nor_parse_4bait()
1053 read_hwcaps |= read->hwcaps; in spi_nor_parse_4bait()
1057 * Compute the subset of Page Program commands for which the 4-byte in spi_nor_parse_4bait()
1067 * Bypass the params->hwcaps.mask and consider 4BAIT the biggest in spi_nor_parse_4bait()
1070 discard_hwcaps |= program->hwcaps; in spi_nor_parse_4bait()
1071 if (dwords[SFDP_DWORD(1)] & program->supported_bit) in spi_nor_parse_4bait()
1072 pp_hwcaps |= program->hwcaps; in spi_nor_parse_4bait()
1076 * Compute the subset of Sector Erase commands for which the 4-byte in spi_nor_parse_4bait()
1083 if (dwords[SFDP_DWORD(1)] & erase->supported_bit) in spi_nor_parse_4bait()
1084 erase_mask |= BIT(i); in spi_nor_parse_4bait()
1091 * We need at least one 4-byte op code per read, program and erase in spi_nor_parse_4bait()
1093 * nor->addr_nbytes value. in spi_nor_parse_4bait()
1099 * Discard all operations from the 4-byte instruction set which are in spi_nor_parse_4bait()
1102 params->hwcaps.mask &= ~discard_hwcaps; in spi_nor_parse_4bait()
1103 params->hwcaps.mask |= (read_hwcaps | pp_hwcaps); in spi_nor_parse_4bait()
1105 /* Use the 4-byte address instruction set. */ in spi_nor_parse_4bait()
1107 struct spi_nor_read_command *read_cmd = ¶ms->reads[i]; in spi_nor_parse_4bait()
1109 read_cmd->opcode = spi_nor_convert_3to4_read(read_cmd->opcode); in spi_nor_parse_4bait()
1133 if (erase_mask & BIT(i)) in spi_nor_parse_4bait()
1147 params->addr_nbytes = 4; in spi_nor_parse_4bait()
1148 nor->flags |= SNOR_F_4B_OPCODES | SNOR_F_HAS_4BAIT; in spi_nor_parse_4bait()
1156 #define PROFILE1_DWORD1_RDSR_ADDR_BYTES BIT(29)
1157 #define PROFILE1_DWORD1_RDSR_DUMMY BIT(28)
1165 * spi_nor_parse_profile1() - parse the xSPI Profile 1.0 table
1170 * Return: 0 on success, -errno otherwise.
1180 len = profile1_header->length * sizeof(*dwords); in spi_nor_parse_profile1()
1183 return -ENOMEM; in spi_nor_parse_profile1()
1190 le32_to_cpu_array(dwords, profile1_header->length); in spi_nor_parse_profile1()
1192 /* Get 8D-8D-8D fast read opcode and dummy cycles. */ in spi_nor_parse_profile1()
1197 nor->params->rdsr_dummy = 8; in spi_nor_parse_profile1()
1199 nor->params->rdsr_dummy = 4; in spi_nor_parse_profile1()
1202 nor->params->rdsr_addr_nbytes = 4; in spi_nor_parse_profile1()
1204 nor->params->rdsr_addr_nbytes = 0; in spi_nor_parse_profile1()
1226 dev_dbg(nor->dev, in spi_nor_parse_profile1()
1233 nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR; in spi_nor_parse_profile1()
1234 spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR], in spi_nor_parse_profile1()
1240 * the params->hwcaps.mask here. in spi_nor_parse_profile1()
1242 nor->params->hwcaps.mask |= SNOR_HWCAPS_PP_8_8_8_DTR; in spi_nor_parse_profile1()
1249 #define SCCR_DWORD22_OCTAL_DTR_EN_VOLATILE BIT(31)
1252 * spi_nor_parse_sccr() - Parse the Status, Control and Configuration Register
1258 * Return: 0 on success, -errno otherwise.
1263 struct spi_nor_flash_parameter *params = nor->params; in spi_nor_parse_sccr()
1268 len = sccr_header->length * sizeof(*dwords); in spi_nor_parse_sccr()
1271 return -ENOMEM; in spi_nor_parse_sccr()
1278 le32_to_cpu_array(dwords, sccr_header->length); in spi_nor_parse_sccr()
1281 if (!params->vreg_offset) { in spi_nor_parse_sccr()
1282 params->vreg_offset = devm_kmalloc(nor->dev, sizeof(*dwords), in spi_nor_parse_sccr()
1284 if (!params->vreg_offset) { in spi_nor_parse_sccr()
1285 ret = -ENOMEM; in spi_nor_parse_sccr()
1289 params->vreg_offset[0] = dwords[SFDP_DWORD(1)]; in spi_nor_parse_sccr()
1290 params->n_dice = 1; in spi_nor_parse_sccr()
1294 nor->flags |= SNOR_F_IO_MODE_EN_VOLATILE; in spi_nor_parse_sccr()
1302 * spi_nor_parse_sccr_mc() - Parse the Status, Control and Configuration
1303 * Register Map Offsets for Multi-Chip SPI Memory
1309 * Return: 0 on success, -errno otherwise.
1314 struct spi_nor_flash_parameter *params = nor->params; in spi_nor_parse_sccr_mc()
1320 len = sccr_mc_header->length * sizeof(*dwords); in spi_nor_parse_sccr_mc()
1323 return -ENOMEM; in spi_nor_parse_sccr_mc()
1330 le32_to_cpu_array(dwords, sccr_mc_header->length); in spi_nor_parse_sccr_mc()
1333 * Pair of DOWRDs (volatile and non-volatile register offsets) per in spi_nor_parse_sccr_mc()
1336 n_dice = 1 + sccr_mc_header->length / 2; in spi_nor_parse_sccr_mc()
1339 params->vreg_offset = in spi_nor_parse_sccr_mc()
1340 devm_krealloc(nor->dev, params->vreg_offset, in spi_nor_parse_sccr_mc()
1343 if (!params->vreg_offset) { in spi_nor_parse_sccr_mc()
1344 ret = -ENOMEM; in spi_nor_parse_sccr_mc()
1349 params->vreg_offset[i] = dwords[SFDP_DWORD(i) * 2]; in spi_nor_parse_sccr_mc()
1351 params->n_dice = n_dice; in spi_nor_parse_sccr_mc()
1359 * spi_nor_post_sfdp_fixups() - Updates the flash's parameters and settings
1371 if (nor->manufacturer && nor->manufacturer->fixups && in spi_nor_post_sfdp_fixups()
1372 nor->manufacturer->fixups->post_sfdp) { in spi_nor_post_sfdp_fixups()
1373 ret = nor->manufacturer->fixups->post_sfdp(nor); in spi_nor_post_sfdp_fixups()
1378 if (nor->info->fixups && nor->info->fixups->post_sfdp) in spi_nor_post_sfdp_fixups()
1379 return nor->info->fixups->post_sfdp(nor); in spi_nor_post_sfdp_fixups()
1385 * spi_nor_check_sfdp_signature() - check for a valid SFDP signature
1391 * Return: 0 on success, -errno otherwise.
1406 return -EINVAL; in spi_nor_check_sfdp_signature()
1412 * spi_nor_parse_sfdp() - parse the Serial Flash Discoverable Parameters.
1417 * (Q)SPI memory manufacturers. Those hard-coded tables allow us to learn at
1421 * Return: 0 on success, -errno otherwise.
1428 struct device *dev = nor->dev; in spi_nor_parse_sfdp()
1442 return -EINVAL; in spi_nor_parse_sfdp()
1450 bfpt_header->major != SFDP_JESD216_MAJOR) in spi_nor_parse_sfdp()
1451 return -EINVAL; in spi_nor_parse_sfdp()
1472 return -ENOMEM; in spi_nor_parse_sfdp()
1505 err = -ENOMEM; in spi_nor_parse_sfdp()
1515 sfdp->num_dwords = DIV_ROUND_UP(sfdp_size, sizeof(*sfdp->dwords)); in spi_nor_parse_sfdp()
1516 sfdp->dwords = devm_kcalloc(dev, sfdp->num_dwords, in spi_nor_parse_sfdp()
1517 sizeof(*sfdp->dwords), GFP_KERNEL); in spi_nor_parse_sfdp()
1518 if (!sfdp->dwords) { in spi_nor_parse_sfdp()
1519 err = -ENOMEM; in spi_nor_parse_sfdp()
1524 err = spi_nor_read_sfdp(nor, 0, sfdp_size, sfdp->dwords); in spi_nor_parse_sfdp()
1527 devm_kfree(dev, sfdp->dwords); in spi_nor_parse_sfdp()
1532 nor->sfdp = sfdp; in spi_nor_parse_sfdp()
1542 param_header->major == SFDP_JESD216_MAJOR && in spi_nor_parse_sfdp()
1543 (param_header->minor > bfpt_header->minor || in spi_nor_parse_sfdp()
1544 (param_header->minor == bfpt_header->minor && in spi_nor_parse_sfdp()
1545 param_header->length > bfpt_header->length))) in spi_nor_parse_sfdp()