8 #include <linux/mtd/spi-nor.h>
144  * @nor:	pointer to a 'struct spi_nor'
151 static int spi_nor_read_raw(struct spi_nor *nor, u32 addr, size_t len, u8 *buf)  in spi_nor_read_raw()  argument
156 		ret = spi_nor_read_data(nor, addr, len, buf);  in spi_nor_read_raw()
171  * @nor:	pointer to a 'struct spi_nor'
182 static int spi_nor_read_sfdp(struct spi_nor *nor, u32 addr,  in spi_nor_read_sfdp()  argument
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()
196 	ret = spi_nor_read_raw(nor, addr, len, buf);  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()
207  * @nor:	pointer to a 'struct spi_nor'
218 static int spi_nor_read_sfdp_dma_unsafe(struct spi_nor *nor, u32 addr,  in spi_nor_read_sfdp_dma_unsafe()  argument
228 	ret = spi_nor_read_sfdp(nor, addr, len, dma_safe_buf);  in spi_nor_read_sfdp_dma_unsafe()
312  * @erase:	pointer to a structure that describes a SPI NOR erase type
351  * @map:	the erase map of the SPI NOR
379  * @map:	the erase map of the SPI NOR
410  * @nor:		pointer to a 'struct spi_nor'
436 static int spi_nor_parse_bfpt(struct spi_nor *nor,  in spi_nor_parse_bfpt()  argument
439 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_bfpt()
459 	err = spi_nor_read_sfdp_dma_unsafe(nor,  addr, len, &bfpt);  in spi_nor_parse_bfpt()
489 		 * Prevent overflows on params->size. Anyway, a NOR of 2^64  in spi_nor_parse_bfpt()
561 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
585 		nor->flags |= SNOR_F_HAS_16BIT_SR | SNOR_F_NO_READ_CR;  in spi_nor_parse_bfpt()
590 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
595 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
606 		nor->flags |= SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
612 		dev_dbg(nor->dev, "BFPT QER reserved value used\n");  in spi_nor_parse_bfpt()
624 		dev_dbg(nor->dev, "BFPT: 4-Byte Address Mode method is not recognized or not implemented\n");  in spi_nor_parse_bfpt()
628 		nor->flags |= SNOR_F_SOFT_RESET;  in spi_nor_parse_bfpt()
632 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
637 		nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;  in spi_nor_parse_bfpt()
641 		nor->cmd_ext_type = SPI_NOR_EXT_INVERT;  in spi_nor_parse_bfpt()
645 		dev_dbg(nor->dev, "Reserved command extension used\n");  in spi_nor_parse_bfpt()
649 		dev_dbg(nor->dev, "16-bit opcodes not supported\n");  in spi_nor_parse_bfpt()
653 	return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
659  * @nor:	pointer to a 'struct spi_nor'
662 static u8 spi_nor_smpt_addr_nbytes(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_addr_nbytes()  argument
673 		return nor->params->addr_mode_nbytes;  in spi_nor_smpt_addr_nbytes()
680  * @nor:	pointer to a 'struct spi_nor'
685 static u8 spi_nor_smpt_read_dummy(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_read_dummy()  argument
690 		return nor->read_dummy;  in spi_nor_smpt_read_dummy()
696  * @nor:	pointer to a 'struct spi_nor'
702 static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const u32 *smpt,  in spi_nor_get_map_in_use()  argument
718 	addr_nbytes = nor->addr_nbytes;  in spi_nor_get_map_in_use()
719 	read_dummy = nor->read_dummy;  in spi_nor_get_map_in_use()
720 	read_opcode = nor->read_opcode;  in spi_nor_get_map_in_use()
729 		nor->addr_nbytes = spi_nor_smpt_addr_nbytes(nor, smpt[i]);  in spi_nor_get_map_in_use()
730 		nor->read_dummy = spi_nor_smpt_read_dummy(nor, smpt[i]);  in spi_nor_get_map_in_use()
731 		nor->read_opcode = SMPT_CMD_OPCODE(smpt[i]);  in spi_nor_get_map_in_use()
734 		err = spi_nor_read_raw(nor, addr, 1, buf);  in spi_nor_get_map_in_use()
776 	nor->addr_nbytes = addr_nbytes;  in spi_nor_get_map_in_use()
777 	nor->read_dummy = read_dummy;  in spi_nor_get_map_in_use()
778 	nor->read_opcode = read_opcode;  in spi_nor_get_map_in_use()
794  * @region:	pointer to a structure that describes a SPI NOR erase region
795  * @erase:	pointer to a structure that describes a SPI NOR erase type
817  * @nor:	pointer to a 'struct spi_nor'
822 static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,  in spi_nor_init_non_uniform_erase_map()  argument
825 	struct spi_nor_erase_map *map = &nor->params->erase_map;  in spi_nor_init_non_uniform_erase_map()
839 	region = devm_kcalloc(nor->dev, region_count, sizeof(*region),  in spi_nor_init_non_uniform_erase_map()
901  * @nor:		pointer to a 'struct spi_nor'
910 static int spi_nor_parse_smpt(struct spi_nor *nor,  in spi_nor_parse_smpt()  argument
926 	ret = spi_nor_read_sfdp(nor, addr, len, smpt);  in spi_nor_parse_smpt()
933 	sector_map = spi_nor_get_map_in_use(nor, smpt, smpt_header->length);  in spi_nor_parse_smpt()
939 	ret = spi_nor_init_non_uniform_erase_map(nor, sector_map);  in spi_nor_parse_smpt()
943 	spi_nor_regions_sort_erase_types(&nor->params->erase_map);  in spi_nor_parse_smpt()
952  * @nor:		pointer to a 'struct spi_nor'.
958 static int spi_nor_parse_4bait(struct spi_nor *nor,  in spi_nor_parse_4bait()  argument
983 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_4bait()
1005 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_4bait()
1064 	 * nor->addr_nbytes value.  in spi_nor_parse_4bait()
1119 	nor->flags |= SNOR_F_4B_OPCODES | SNOR_F_HAS_4BAIT;  in spi_nor_parse_4bait()
1137  * @nor:		pointer to a 'struct spi_nor'
1143 static int spi_nor_parse_profile1(struct spi_nor *nor,  in spi_nor_parse_profile1()  argument
1157 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_profile1()
1168 		nor->params->rdsr_dummy = 8;  in spi_nor_parse_profile1()
1170 		nor->params->rdsr_dummy = 4;  in spi_nor_parse_profile1()
1173 		nor->params->rdsr_addr_nbytes = 4;  in spi_nor_parse_profile1()
1175 		nor->params->rdsr_addr_nbytes = 0;  in spi_nor_parse_profile1()
1197 		dev_dbg(nor->dev,  in spi_nor_parse_profile1()
1204 	nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;  in spi_nor_parse_profile1()
1205 	spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],  in spi_nor_parse_profile1()
1213 	nor->params->hwcaps.mask |= SNOR_HWCAPS_PP_8_8_8_DTR;  in spi_nor_parse_profile1()
1225  * @nor:		pointer to a 'struct spi_nor'
1231 static int spi_nor_parse_sccr(struct spi_nor *nor,  in spi_nor_parse_sccr()  argument
1234 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_sccr()
1245 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_sccr()
1253 		params->vreg_offset = devm_kmalloc(nor->dev, sizeof(*dwords),  in spi_nor_parse_sccr()
1265 		nor->flags |= SNOR_F_IO_MODE_EN_VOLATILE;  in spi_nor_parse_sccr()
1276  * @nor:		pointer to a 'struct spi_nor'
1282 static int spi_nor_parse_sccr_mc(struct spi_nor *nor,  in spi_nor_parse_sccr_mc()  argument
1285 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_sccr_mc()
1297 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_sccr_mc()
1311 			devm_krealloc(nor->dev, params->vreg_offset,  in spi_nor_parse_sccr_mc()
1333  * @nor:	pointer to a 'struct spi_nor'
1338 static int spi_nor_post_sfdp_fixups(struct spi_nor *nor)  in spi_nor_post_sfdp_fixups()  argument
1342 	if (nor->manufacturer && nor->manufacturer->fixups &&  in spi_nor_post_sfdp_fixups()
1343 	    nor->manufacturer->fixups->post_sfdp) {  in spi_nor_post_sfdp_fixups()
1344 		ret = nor->manufacturer->fixups->post_sfdp(nor);  in spi_nor_post_sfdp_fixups()
1349 	if (nor->info->fixups && nor->info->fixups->post_sfdp)  in spi_nor_post_sfdp_fixups()
1350 		return nor->info->fixups->post_sfdp(nor);  in spi_nor_post_sfdp_fixups()
1357  * @nor:	pointer to a 'struct spi_nor'
1364 int spi_nor_check_sfdp_signature(struct spi_nor *nor)  in spi_nor_check_sfdp_signature()  argument
1370 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(signature),  in spi_nor_check_sfdp_signature()
1384  * @nor:		pointer to a 'struct spi_nor'
1394 int spi_nor_parse_sfdp(struct spi_nor *nor)  in spi_nor_parse_sfdp()  argument
1399 	struct device *dev = nor->dev;  in spi_nor_parse_sfdp()
1406 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(header), &header);  in spi_nor_parse_sfdp()
1445 		err = spi_nor_read_sfdp(nor, sizeof(header),  in spi_nor_parse_sfdp()
1495 	err = spi_nor_read_sfdp(nor, 0, sfdp_size, sfdp->dwords);  in spi_nor_parse_sfdp()
1503 	nor->sfdp = sfdp;  in spi_nor_parse_sfdp()
1520 	err = spi_nor_parse_bfpt(nor, bfpt_header);  in spi_nor_parse_sfdp()
1530 			err = spi_nor_parse_smpt(nor, param_header);  in spi_nor_parse_sfdp()
1534 			err = spi_nor_parse_4bait(nor, param_header);  in spi_nor_parse_sfdp()
1538 			err = spi_nor_parse_profile1(nor, param_header);  in spi_nor_parse_sfdp()
1542 			err = spi_nor_parse_sccr(nor, param_header);  in spi_nor_parse_sfdp()
1546 			err = spi_nor_parse_sccr_mc(nor, param_header);  in spi_nor_parse_sfdp()
1566 	err = spi_nor_post_sfdp_fixups(nor);  in spi_nor_parse_sfdp()