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
406  * @nor:		pointer to a 'struct spi_nor'
432 static int spi_nor_parse_bfpt(struct spi_nor *nor,  in spi_nor_parse_bfpt()  argument
435 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_bfpt()
456 	err = spi_nor_read_sfdp_dma_unsafe(nor,  addr, len, &bfpt);  in spi_nor_parse_bfpt()
486 		 * Prevent overflows on params->size. Anyway, a NOR of 2^64  in spi_nor_parse_bfpt()
556 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
580 		nor->flags |= SNOR_F_HAS_16BIT_SR | SNOR_F_NO_READ_CR;  in spi_nor_parse_bfpt()
585 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
590 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
601 		nor->flags |= SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
607 		dev_dbg(nor->dev, "BFPT QER reserved value used\n");  in spi_nor_parse_bfpt()
619 		dev_dbg(nor->dev, "BFPT: 4-Byte Address Mode method is not recognized or not implemented\n");  in spi_nor_parse_bfpt()
623 		nor->flags |= SNOR_F_SOFT_RESET;  in spi_nor_parse_bfpt()
627 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
658 		nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;  in spi_nor_parse_bfpt()
662 		nor->cmd_ext_type = SPI_NOR_EXT_INVERT;  in spi_nor_parse_bfpt()
666 		dev_dbg(nor->dev, "Reserved command extension used\n");  in spi_nor_parse_bfpt()
670 		dev_dbg(nor->dev, "16-bit opcodes not supported\n");  in spi_nor_parse_bfpt()
674 	return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
680  * @nor:	pointer to a 'struct spi_nor'
683 static u8 spi_nor_smpt_addr_nbytes(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_addr_nbytes()  argument
694 		return nor->params->addr_mode_nbytes;  in spi_nor_smpt_addr_nbytes()
701  * @nor:	pointer to a 'struct spi_nor'
706 static u8 spi_nor_smpt_read_dummy(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_read_dummy()  argument
711 		return nor->read_dummy;  in spi_nor_smpt_read_dummy()
717  * @nor:	pointer to a 'struct spi_nor'
723 static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const u32 *smpt,  in spi_nor_get_map_in_use()  argument
739 	addr_nbytes = nor->addr_nbytes;  in spi_nor_get_map_in_use()
740 	read_dummy = nor->read_dummy;  in spi_nor_get_map_in_use()
741 	read_opcode = nor->read_opcode;  in spi_nor_get_map_in_use()
750 		nor->addr_nbytes = spi_nor_smpt_addr_nbytes(nor, smpt[i]);  in spi_nor_get_map_in_use()
751 		nor->read_dummy = spi_nor_smpt_read_dummy(nor, smpt[i]);  in spi_nor_get_map_in_use()
752 		nor->read_opcode = SMPT_CMD_OPCODE(smpt[i]);  in spi_nor_get_map_in_use()
755 		err = spi_nor_read_raw(nor, addr, 1, buf);  in spi_nor_get_map_in_use()
797 	nor->addr_nbytes = addr_nbytes;  in spi_nor_get_map_in_use()
798 	nor->read_dummy = read_dummy;  in spi_nor_get_map_in_use()
799 	nor->read_opcode = read_opcode;  in spi_nor_get_map_in_use()
805  * @region:	pointer to a structure that describes a SPI NOR erase region
806  * @erase:	pointer to a structure that describes a SPI NOR erase type
828  * @nor:	pointer to a 'struct spi_nor'
833 static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,  in spi_nor_init_non_uniform_erase_map()  argument
836 	struct spi_nor_erase_map *map = &nor->params->erase_map;  in spi_nor_init_non_uniform_erase_map()
850 	region = devm_kcalloc(nor->dev, region_count, sizeof(*region),  in spi_nor_init_non_uniform_erase_map()
913  * @nor:		pointer to a 'struct spi_nor'
922 static int spi_nor_parse_smpt(struct spi_nor *nor,  in spi_nor_parse_smpt()  argument
938 	ret = spi_nor_read_sfdp(nor, addr, len, smpt);  in spi_nor_parse_smpt()
945 	sector_map = spi_nor_get_map_in_use(nor, smpt, smpt_header->length);  in spi_nor_parse_smpt()
951 	ret = spi_nor_init_non_uniform_erase_map(nor, sector_map);  in spi_nor_parse_smpt()
955 	spi_nor_regions_sort_erase_types(&nor->params->erase_map);  in spi_nor_parse_smpt()
964  * @nor:		pointer to a 'struct spi_nor'.
970 static int spi_nor_parse_4bait(struct spi_nor *nor,  in spi_nor_parse_4bait()  argument
997 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_4bait()
1019 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_4bait()
1078 	 * nor->addr_nbytes value.  in spi_nor_parse_4bait()
1133 	nor->flags |= SNOR_F_4B_OPCODES | SNOR_F_HAS_4BAIT;  in spi_nor_parse_4bait()
1151  * @nor:		pointer to a 'struct spi_nor'
1157 static int spi_nor_parse_profile1(struct spi_nor *nor,  in spi_nor_parse_profile1()  argument
1171 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_profile1()
1182 		nor->params->rdsr_dummy = 8;  in spi_nor_parse_profile1()
1184 		nor->params->rdsr_dummy = 4;  in spi_nor_parse_profile1()
1187 		nor->params->rdsr_addr_nbytes = 4;  in spi_nor_parse_profile1()
1189 		nor->params->rdsr_addr_nbytes = 0;  in spi_nor_parse_profile1()
1211 		dev_dbg(nor->dev,  in spi_nor_parse_profile1()
1218 	nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;  in spi_nor_parse_profile1()
1219 	spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],  in spi_nor_parse_profile1()
1227 	nor->params->hwcaps.mask |= SNOR_HWCAPS_PP_8_8_8_DTR;  in spi_nor_parse_profile1()
1239  * @nor:		pointer to a 'struct spi_nor'
1245 static int spi_nor_parse_sccr(struct spi_nor *nor,  in spi_nor_parse_sccr()  argument
1248 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_sccr()
1259 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_sccr()
1267 		params->vreg_offset = devm_kmalloc(nor->dev, sizeof(*dwords),  in spi_nor_parse_sccr()
1279 		nor->flags |= SNOR_F_IO_MODE_EN_VOLATILE;  in spi_nor_parse_sccr()
1290  * @nor:		pointer to a 'struct spi_nor'
1296 static int spi_nor_parse_sccr_mc(struct spi_nor *nor,  in spi_nor_parse_sccr_mc()  argument
1299 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_sccr_mc()
1311 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_sccr_mc()
1325 			devm_krealloc(nor->dev, params->vreg_offset,  in spi_nor_parse_sccr_mc()
1347  * @nor:	pointer to a 'struct spi_nor'
1352 static int spi_nor_post_sfdp_fixups(struct spi_nor *nor)  in spi_nor_post_sfdp_fixups()  argument
1356 	if (nor->manufacturer && nor->manufacturer->fixups &&  in spi_nor_post_sfdp_fixups()
1357 	    nor->manufacturer->fixups->post_sfdp) {  in spi_nor_post_sfdp_fixups()
1358 		ret = nor->manufacturer->fixups->post_sfdp(nor);  in spi_nor_post_sfdp_fixups()
1363 	if (nor->info->fixups && nor->info->fixups->post_sfdp)  in spi_nor_post_sfdp_fixups()
1364 		return nor->info->fixups->post_sfdp(nor);  in spi_nor_post_sfdp_fixups()
1371  * @nor:	pointer to a 'struct spi_nor'
1378 int spi_nor_check_sfdp_signature(struct spi_nor *nor)  in spi_nor_check_sfdp_signature()  argument
1384 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(signature),  in spi_nor_check_sfdp_signature()
1398  * @nor:		pointer to a 'struct spi_nor'
1408 int spi_nor_parse_sfdp(struct spi_nor *nor)  in spi_nor_parse_sfdp()  argument
1413 	struct device *dev = nor->dev;  in spi_nor_parse_sfdp()
1420 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(header), &header);  in spi_nor_parse_sfdp()
1459 		err = spi_nor_read_sfdp(nor, sizeof(header),  in spi_nor_parse_sfdp()
1509 	err = spi_nor_read_sfdp(nor, 0, sfdp_size, sfdp->dwords);  in spi_nor_parse_sfdp()
1517 	nor->sfdp = sfdp;  in spi_nor_parse_sfdp()
1534 	err = spi_nor_parse_bfpt(nor, bfpt_header);  in spi_nor_parse_sfdp()
1544 			err = spi_nor_parse_smpt(nor, param_header);  in spi_nor_parse_sfdp()
1548 			err = spi_nor_parse_4bait(nor, param_header);  in spi_nor_parse_sfdp()
1552 			err = spi_nor_parse_profile1(nor, param_header);  in spi_nor_parse_sfdp()
1556 			err = spi_nor_parse_sccr(nor, param_header);  in spi_nor_parse_sfdp()
1560 			err = spi_nor_parse_sccr_mc(nor, param_header);  in spi_nor_parse_sfdp()
1580 	err = spi_nor_post_sfdp_fixups(nor);  in spi_nor_parse_sfdp()