9 #include <linux/mtd/spi-nor.h>
133  * @nor:	pointer to a 'struct spi_nor'
140 static int spi_nor_read_raw(struct spi_nor *nor, u32 addr, size_t len, u8 *buf)  in spi_nor_read_raw()  argument
145 		ret = spi_nor_read_data(nor, addr, len, buf);  in spi_nor_read_raw()
160  * @nor:	pointer to a 'struct spi_nor'
171 static int spi_nor_read_sfdp(struct spi_nor *nor, u32 addr,  in spi_nor_read_sfdp()  argument
177 	read_opcode = nor->read_opcode;  in spi_nor_read_sfdp()
178 	addr_width = nor->addr_width;  in spi_nor_read_sfdp()
179 	read_dummy = nor->read_dummy;  in spi_nor_read_sfdp()
181 	nor->read_opcode = SPINOR_OP_RDSFDP;  in spi_nor_read_sfdp()
182 	nor->addr_width = 3;  in spi_nor_read_sfdp()
183 	nor->read_dummy = 8;  in spi_nor_read_sfdp()
185 	ret = spi_nor_read_raw(nor, addr, len, buf);  in spi_nor_read_sfdp()
187 	nor->read_opcode = read_opcode;  in spi_nor_read_sfdp()
188 	nor->addr_width = addr_width;  in spi_nor_read_sfdp()
189 	nor->read_dummy = read_dummy;  in spi_nor_read_sfdp()
196  * @nor:	pointer to a 'struct spi_nor'
207 static int spi_nor_read_sfdp_dma_unsafe(struct spi_nor *nor, u32 addr,  in spi_nor_read_sfdp_dma_unsafe()  argument
217 	ret = spi_nor_read_sfdp(nor, addr, len, dma_safe_buf);  in spi_nor_read_sfdp_dma_unsafe()
301  * @erase:	pointer to a structure that describes a SPI NOR erase type
340  * @map:	the erase map of the SPI NOR
368  * @map:	the erase map of the SPI NOR
399  * @nor:		pointer to a 'struct spi_nor'
427 static int spi_nor_parse_bfpt(struct spi_nor *nor,  in spi_nor_parse_bfpt()  argument
449 	err = spi_nor_read_sfdp_dma_unsafe(nor,  addr, len, &bfpt);  in spi_nor_parse_bfpt()
460 		nor->addr_width = 3;  in spi_nor_parse_bfpt()
464 		nor->addr_width = 4;  in spi_nor_parse_bfpt()
477 		 * Prevent overflows on params->size. Anyway, a NOR of 2^64  in spi_nor_parse_bfpt()
549 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt,  in spi_nor_parse_bfpt()
574 		nor->flags |= SNOR_F_HAS_16BIT_SR | SNOR_F_NO_READ_CR;  in spi_nor_parse_bfpt()
579 		nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in spi_nor_parse_bfpt()
584 		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()
601 		dev_dbg(nor->dev, "BFPT QER reserved value used\n");  in spi_nor_parse_bfpt()
607 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt,  in spi_nor_parse_bfpt()
610 	return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt, params);  in spi_nor_parse_bfpt()
616  * @nor:	pointer to a 'struct spi_nor'
619 static u8 spi_nor_smpt_addr_width(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_addr_width()  argument
630 		return nor->addr_width;  in spi_nor_smpt_addr_width()
637  * @nor:	pointer to a 'struct spi_nor'
642 static u8 spi_nor_smpt_read_dummy(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_read_dummy()  argument
647 		return nor->read_dummy;  in spi_nor_smpt_read_dummy()
653  * @nor:	pointer to a 'struct spi_nor'
659 static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const u32 *smpt,  in spi_nor_get_map_in_use()  argument
675 	addr_width = nor->addr_width;  in spi_nor_get_map_in_use()
676 	read_dummy = nor->read_dummy;  in spi_nor_get_map_in_use()
677 	read_opcode = nor->read_opcode;  in spi_nor_get_map_in_use()
686 		nor->addr_width = spi_nor_smpt_addr_width(nor, smpt[i]);  in spi_nor_get_map_in_use()
687 		nor->read_dummy = spi_nor_smpt_read_dummy(nor, smpt[i]);  in spi_nor_get_map_in_use()
688 		nor->read_opcode = SMPT_CMD_OPCODE(smpt[i]);  in spi_nor_get_map_in_use()
691 		err = spi_nor_read_raw(nor, addr, 1, buf);  in spi_nor_get_map_in_use()
733 	nor->addr_width = addr_width;  in spi_nor_get_map_in_use()
734 	nor->read_dummy = read_dummy;  in spi_nor_get_map_in_use()
735 	nor->read_opcode = read_opcode;  in spi_nor_get_map_in_use()
751  * @region:	pointer to a structure that describes a SPI NOR erase region
752  * @erase:	pointer to a structure that describes a SPI NOR erase type
774  * @nor:	pointer to a 'struct spi_nor'
782 spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,  in spi_nor_init_non_uniform_erase_map()  argument
800 	region = devm_kcalloc(nor->dev, region_count, sizeof(*region),  in spi_nor_init_non_uniform_erase_map()
863  * @nor:		pointer to a 'struct spi_nor'
874 static int spi_nor_parse_smpt(struct spi_nor *nor,  in spi_nor_parse_smpt()  argument
891 	ret = spi_nor_read_sfdp(nor, addr, len, smpt);  in spi_nor_parse_smpt()
898 	sector_map = spi_nor_get_map_in_use(nor, smpt, smpt_header->length);  in spi_nor_parse_smpt()
904 	ret = spi_nor_init_non_uniform_erase_map(nor, params, sector_map);  in spi_nor_parse_smpt()
917  * @nor:		pointer to a 'struct spi_nor'.
924 static int spi_nor_parse_4bait(struct spi_nor *nor,  in spi_nor_parse_4bait()  argument
971 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_4bait()
1030 	 * nor->addr_width value.  in spi_nor_parse_4bait()
1077 	nor->addr_width = 4;  in spi_nor_parse_4bait()
1078 	nor->flags |= SNOR_F_4B_OPCODES | SNOR_F_HAS_4BAIT;  in spi_nor_parse_4bait()
1088  * @nor:		pointer to a 'struct spi_nor'
1100 int spi_nor_parse_sfdp(struct spi_nor *nor,  in spi_nor_parse_sfdp()  argument
1106 	struct device *dev = nor->dev;  in spi_nor_parse_sfdp()
1111 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(header), &header);  in spi_nor_parse_sfdp()
1147 		err = spi_nor_read_sfdp(nor, sizeof(header),  in spi_nor_parse_sfdp()
1170 	err = spi_nor_parse_bfpt(nor, bfpt_header, params);  in spi_nor_parse_sfdp()
1180 			err = spi_nor_parse_smpt(nor, param_header, params);  in spi_nor_parse_sfdp()
1184 			err = spi_nor_parse_4bait(nor, param_header, params);  in spi_nor_parse_sfdp()