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_nbytes = nor->addr_nbytes;  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_nbytes = 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_nbytes = addr_nbytes;  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()
484 		 * 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()
613 		nor->flags |= SNOR_F_SOFT_RESET;  in spi_nor_parse_bfpt()
617 		return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
622 		nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;  in spi_nor_parse_bfpt()
626 		nor->cmd_ext_type = SPI_NOR_EXT_INVERT;  in spi_nor_parse_bfpt()
630 		dev_dbg(nor->dev, "Reserved command extension used\n");  in spi_nor_parse_bfpt()
634 		dev_dbg(nor->dev, "16-bit opcodes not supported\n");  in spi_nor_parse_bfpt()
638 	return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);  in spi_nor_parse_bfpt()
644  * @nor:	pointer to a 'struct spi_nor'
647 static u8 spi_nor_smpt_addr_nbytes(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_addr_nbytes()  argument
658 		return nor->params->addr_mode_nbytes;  in spi_nor_smpt_addr_nbytes()
665  * @nor:	pointer to a 'struct spi_nor'
670 static u8 spi_nor_smpt_read_dummy(const struct spi_nor *nor, const u32 settings)  in spi_nor_smpt_read_dummy()  argument
675 		return nor->read_dummy;  in spi_nor_smpt_read_dummy()
681  * @nor:	pointer to a 'struct spi_nor'
687 static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const u32 *smpt,  in spi_nor_get_map_in_use()  argument
703 	addr_nbytes = nor->addr_nbytes;  in spi_nor_get_map_in_use()
704 	read_dummy = nor->read_dummy;  in spi_nor_get_map_in_use()
705 	read_opcode = nor->read_opcode;  in spi_nor_get_map_in_use()
714 		nor->addr_nbytes = spi_nor_smpt_addr_nbytes(nor, smpt[i]);  in spi_nor_get_map_in_use()
715 		nor->read_dummy = spi_nor_smpt_read_dummy(nor, smpt[i]);  in spi_nor_get_map_in_use()
716 		nor->read_opcode = SMPT_CMD_OPCODE(smpt[i]);  in spi_nor_get_map_in_use()
719 		err = spi_nor_read_raw(nor, addr, 1, buf);  in spi_nor_get_map_in_use()
761 	nor->addr_nbytes = addr_nbytes;  in spi_nor_get_map_in_use()
762 	nor->read_dummy = read_dummy;  in spi_nor_get_map_in_use()
763 	nor->read_opcode = read_opcode;  in spi_nor_get_map_in_use()
779  * @region:	pointer to a structure that describes a SPI NOR erase region
780  * @erase:	pointer to a structure that describes a SPI NOR erase type
802  * @nor:	pointer to a 'struct spi_nor'
807 static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,  in spi_nor_init_non_uniform_erase_map()  argument
810 	struct spi_nor_erase_map *map = &nor->params->erase_map;  in spi_nor_init_non_uniform_erase_map()
824 	region = devm_kcalloc(nor->dev, region_count, sizeof(*region),  in spi_nor_init_non_uniform_erase_map()
886  * @nor:		pointer to a 'struct spi_nor'
895 static int spi_nor_parse_smpt(struct spi_nor *nor,  in spi_nor_parse_smpt()  argument
911 	ret = spi_nor_read_sfdp(nor, addr, len, smpt);  in spi_nor_parse_smpt()
918 	sector_map = spi_nor_get_map_in_use(nor, smpt, smpt_header->length);  in spi_nor_parse_smpt()
924 	ret = spi_nor_init_non_uniform_erase_map(nor, sector_map);  in spi_nor_parse_smpt()
928 	spi_nor_regions_sort_erase_types(&nor->params->erase_map);  in spi_nor_parse_smpt()
937  * @nor:		pointer to a 'struct spi_nor'.
943 static int spi_nor_parse_4bait(struct spi_nor *nor,  in spi_nor_parse_4bait()  argument
968 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_parse_4bait()
990 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_4bait()
1049 	 * nor->addr_nbytes value.  in spi_nor_parse_4bait()
1104 	nor->flags |= SNOR_F_4B_OPCODES | SNOR_F_HAS_4BAIT;  in spi_nor_parse_4bait()
1122  * @nor:		pointer to a 'struct spi_nor'
1128 static int spi_nor_parse_profile1(struct spi_nor *nor,  in spi_nor_parse_profile1()  argument
1142 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_profile1()
1153 		nor->params->rdsr_dummy = 8;  in spi_nor_parse_profile1()
1155 		nor->params->rdsr_dummy = 4;  in spi_nor_parse_profile1()
1158 		nor->params->rdsr_addr_nbytes = 4;  in spi_nor_parse_profile1()
1160 		nor->params->rdsr_addr_nbytes = 0;  in spi_nor_parse_profile1()
1179 		dev_dbg(nor->dev,  in spi_nor_parse_profile1()
1186 	spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],  in spi_nor_parse_profile1()
1200  * @nor:		pointer to a 'struct spi_nor'
1206 static int spi_nor_parse_sccr(struct spi_nor *nor,  in spi_nor_parse_sccr()  argument
1219 	ret = spi_nor_read_sfdp(nor, addr, len, dwords);  in spi_nor_parse_sccr()
1226 		nor->flags |= SNOR_F_IO_MODE_EN_VOLATILE;  in spi_nor_parse_sccr()
1237  * @nor:	pointer to a 'struct spi_nor'
1242 static void spi_nor_post_sfdp_fixups(struct spi_nor *nor)  in spi_nor_post_sfdp_fixups()  argument
1244 	if (nor->manufacturer && nor->manufacturer->fixups &&  in spi_nor_post_sfdp_fixups()
1245 	    nor->manufacturer->fixups->post_sfdp)  in spi_nor_post_sfdp_fixups()
1246 		nor->manufacturer->fixups->post_sfdp(nor);  in spi_nor_post_sfdp_fixups()
1248 	if (nor->info->fixups && nor->info->fixups->post_sfdp)  in spi_nor_post_sfdp_fixups()
1249 		nor->info->fixups->post_sfdp(nor);  in spi_nor_post_sfdp_fixups()
1254  * @nor:		pointer to a 'struct spi_nor'
1264 int spi_nor_parse_sfdp(struct spi_nor *nor)  in spi_nor_parse_sfdp()  argument
1269 	struct device *dev = nor->dev;  in spi_nor_parse_sfdp()
1276 	err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(header), &header);  in spi_nor_parse_sfdp()
1315 		err = spi_nor_read_sfdp(nor, sizeof(header),  in spi_nor_parse_sfdp()
1365 	err = spi_nor_read_sfdp(nor, 0, sfdp_size, sfdp->dwords);  in spi_nor_parse_sfdp()
1373 	nor->sfdp = sfdp;  in spi_nor_parse_sfdp()
1390 	err = spi_nor_parse_bfpt(nor, bfpt_header);  in spi_nor_parse_sfdp()
1400 			err = spi_nor_parse_smpt(nor, param_header);  in spi_nor_parse_sfdp()
1404 			err = spi_nor_parse_4bait(nor, param_header);  in spi_nor_parse_sfdp()
1408 			err = spi_nor_parse_profile1(nor, param_header);  in spi_nor_parse_sfdp()
1412 			err = spi_nor_parse_sccr(nor, param_header);  in spi_nor_parse_sfdp()
1432 	spi_nor_post_sfdp_fixups(nor);  in spi_nor_parse_sfdp()