10 #include <linux/mtd/spi-nor.h>
140  * @nor:	pointer to a 'struct spi_nor'
147 static int spi_nor_read_raw(struct spi_nor *nor, u32 addr, size_t len, u8 *buf)  in spi_nor_read_raw()  argument
152 		ret = spi_nor_read_data(nor, addr, len, buf);  in spi_nor_read_raw()
167  * @nor:	pointer to a 'struct spi_nor'
178 static int spi_nor_read_sfdp(struct spi_nor *nor, u32 addr,  in spi_nor_read_sfdp()  argument
184 	read_opcode = nor->read_opcode;  in spi_nor_read_sfdp()
185 	addr_width = nor->addr_width;  in spi_nor_read_sfdp()
186 	read_dummy = nor->read_dummy;  in spi_nor_read_sfdp()
188 	nor->read_opcode = SPINOR_OP_RDSFDP;  in spi_nor_read_sfdp()
189 	nor->addr_width = 3;  in spi_nor_read_sfdp()
190 	nor->read_dummy = 8;  in spi_nor_read_sfdp()
192 	ret = spi_nor_read_raw(nor, addr, len, buf);  in spi_nor_read_sfdp()
194 	nor->read_opcode = read_opcode;  in spi_nor_read_sfdp()
195 	nor->addr_width = addr_width;  in spi_nor_read_sfdp()
196 	nor->read_dummy = read_dummy;  in spi_nor_read_sfdp()
203  * @nor:	pointer to a 'struct spi_nor'
214 static int spi_nor_read_sfdp_dma_unsafe(struct spi_nor *nor, u32 addr,  in spi_nor_read_sfdp_dma_unsafe()  argument
224 	ret = spi_nor_read_sfdp(nor, addr, len, dma_safe_buf);  in spi_nor_read_sfdp_dma_unsafe()
308  * @erase:	pointer to a structure that describes a SPI NOR erase type
347  * @map:	the erase map of the SPI NOR
375  * @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()
454 	err = spi_nor_read_sfdp_dma_unsafe(nor,  addr, len, &bfpt);  in spi_nor_parse_bfpt()
465 		nor->addr_width = 3;  in spi_nor_parse_bfpt()
469 		nor->addr_width = 4;  in spi_nor_parse_bfpt()
482 		 * Prevent overflows on params->size. Anyway, a NOR of 2^64  in spi_nor_parse_bfpt()
554 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
578 		nor->flags |= SNOR_F_HAS_16BIT_SR | SNOR_F_NO_READ_CR;  in spi_nor_parse_bfpt()
583 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
588 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
599 		nor->flags |= SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
605 		dev_dbg(nor->dev, "BFPT QER reserved value used\n");  in spi_nor_parse_bfpt()
611 		nor->flags |= SNOR_F_SOFT_RESET;  in spi_nor_parse_bfpt()
615 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
620 		nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;  in spi_nor_parse_bfpt()
624 		nor->cmd_ext_type = SPI_NOR_EXT_INVERT;  in spi_nor_parse_bfpt()
628 		dev_dbg(nor->dev, "Reserved command extension used\n");  in spi_nor_parse_bfpt()
632 		dev_dbg(nor->dev, "16-bit opcodes not supported\n");  in spi_nor_parse_bfpt()
636 	return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
642  * @nor:	pointer to a 'struct spi_nor'
645 static u8 spi_nor_smpt_addr_width(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_addr_width()  argument
656 		return nor->addr_width;  in spi_nor_smpt_addr_width()
663  * @nor:	pointer to a 'struct spi_nor'
668 static u8 spi_nor_smpt_read_dummy(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_read_dummy()  argument
673 		return nor->read_dummy;  in spi_nor_smpt_read_dummy()
679  * @nor:	pointer to a 'struct spi_nor'
685 static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const u32 *smpt,  in spi_nor_get_map_in_use()  argument
701 	addr_width = nor->addr_width;  in spi_nor_get_map_in_use()
702 	read_dummy = nor->read_dummy;  in spi_nor_get_map_in_use()
703 	read_opcode = nor->read_opcode;  in spi_nor_get_map_in_use()
712 		nor->addr_width = spi_nor_smpt_addr_width(nor, smpt[i]);  in spi_nor_get_map_in_use()
713 		nor->read_dummy = spi_nor_smpt_read_dummy(nor, smpt[i]);  in spi_nor_get_map_in_use()
714 		nor->read_opcode = SMPT_CMD_OPCODE(smpt[i]);  in spi_nor_get_map_in_use()
717 		err = spi_nor_read_raw(nor, addr, 1, buf);  in spi_nor_get_map_in_use()
759 	nor->addr_width = addr_width;  in spi_nor_get_map_in_use()
760 	nor->read_dummy = read_dummy;  in spi_nor_get_map_in_use()
761 	nor->read_opcode = read_opcode;  in spi_nor_get_map_in_use()
777  * @region:	pointer to a structure that describes a SPI NOR erase region
778  * @erase:	pointer to a structure that describes a SPI NOR erase type
800  * @nor:	pointer to a 'struct spi_nor'
805 static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,  in spi_nor_init_non_uniform_erase_map()  argument
808 	struct spi_nor_erase_map *map = &nor->params->erase_map;  in spi_nor_init_non_uniform_erase_map()
822 	region = devm_kcalloc(nor->dev, region_count, sizeof(*region),  in spi_nor_init_non_uniform_erase_map()
884  * @nor:		pointer to a 'struct spi_nor'
893 static int spi_nor_parse_smpt(struct spi_nor *nor,  in spi_nor_parse_smpt()  argument
909 	ret = spi_nor_read_sfdp(nor, addr, len, smpt);  in spi_nor_parse_smpt()
916 	sector_map = spi_nor_get_map_in_use(nor, smpt, smpt_header->length);  in spi_nor_parse_smpt()
922 	ret = spi_nor_init_non_uniform_erase_map(nor, sector_map);  in spi_nor_parse_smpt()
926 	spi_nor_regions_sort_erase_types(&nor->params->erase_map);  in spi_nor_parse_smpt()
935  * @nor:		pointer to a 'struct spi_nor'.
941 static int spi_nor_parse_4bait(struct spi_nor *nor,  in spi_nor_parse_4bait()  argument
966 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_4bait()
988 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_4bait()
1047 	 * nor->addr_width value.  in spi_nor_parse_4bait()
1101 	nor->addr_width = 4;  in spi_nor_parse_4bait()
1102 	nor->flags |= SNOR_F_4B_OPCODES | SNOR_F_HAS_4BAIT;  in spi_nor_parse_4bait()
1120  * @nor:		pointer to a 'struct spi_nor'
1126 static int spi_nor_parse_profile1(struct spi_nor *nor,  in spi_nor_parse_profile1()  argument
1140 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_profile1()
1151 		nor->params->rdsr_dummy = 8;  in spi_nor_parse_profile1()
1153 		nor->params->rdsr_dummy = 4;  in spi_nor_parse_profile1()
1156 		nor->params->rdsr_addr_nbytes = 4;  in spi_nor_parse_profile1()
1158 		nor->params->rdsr_addr_nbytes = 0;  in spi_nor_parse_profile1()
1177 		dev_dbg(nor->dev,  in spi_nor_parse_profile1()
1184 	spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],  in spi_nor_parse_profile1()
1198  * @nor:		pointer to a 'struct spi_nor'
1204 static int spi_nor_parse_sccr(struct spi_nor *nor,  in spi_nor_parse_sccr()  argument
1217 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_sccr()
1224 		nor->flags |= SNOR_F_IO_MODE_EN_VOLATILE;  in spi_nor_parse_sccr()
1233  * @nor:		pointer to a 'struct spi_nor'
1243 int spi_nor_parse_sfdp(struct spi_nor *nor)  in spi_nor_parse_sfdp()  argument
1248 	struct device *dev = nor->dev;  in spi_nor_parse_sfdp()
1255 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(header), &header);  in spi_nor_parse_sfdp()
1294 		err = spi_nor_read_sfdp(nor, sizeof(header),  in spi_nor_parse_sfdp()
1344 	err = spi_nor_read_sfdp(nor, 0, sfdp_size, sfdp->dwords);  in spi_nor_parse_sfdp()
1352 	nor->sfdp = sfdp;  in spi_nor_parse_sfdp()
1369 	err = spi_nor_parse_bfpt(nor, bfpt_header);  in spi_nor_parse_sfdp()
1379 			err = spi_nor_parse_smpt(nor, param_header);  in spi_nor_parse_sfdp()
1383 			err = spi_nor_parse_4bait(nor, param_header);  in spi_nor_parse_sfdp()
1387 			err = spi_nor_parse_profile1(nor, param_header);  in spi_nor_parse_sfdp()
1391 			err = spi_nor_parse_sccr(nor, param_header);  in spi_nor_parse_sfdp()