10 #include <linux/mtd/spi-nor.h>
47 /* Cypress SPI NOR flash operations. */
77  * @nor:	pointer to 'struct spi_nor'.
79 static void spansion_nor_clear_sr(struct spi_nor *nor)  in spansion_nor_clear_sr()  argument
81 	const struct spansion_nor_params *priv_params = nor->params->priv;  in spansion_nor_clear_sr()
84 	if (nor->spimem) {  in spansion_nor_clear_sr()
87 		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);  in spansion_nor_clear_sr()
89 		ret = spi_mem_exec_op(nor->spimem, &op);  in spansion_nor_clear_sr()
91 		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,  in spansion_nor_clear_sr()
96 		dev_dbg(nor->dev, "error %d clearing SR\n", ret);  in spansion_nor_clear_sr()
99 static int cypress_nor_sr_ready_and_clear_reg(struct spi_nor *nor, u64 addr)  in cypress_nor_sr_ready_and_clear_reg()  argument
101 	struct spi_nor_flash_parameter *params = nor->params;  in cypress_nor_sr_ready_and_clear_reg()
104 					  0, nor->bouncebuf);  in cypress_nor_sr_ready_and_clear_reg()
107 	if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {  in cypress_nor_sr_ready_and_clear_reg()
112 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_sr_ready_and_clear_reg()
116 	if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {  in cypress_nor_sr_ready_and_clear_reg()
117 		if (nor->bouncebuf[0] & SR_E_ERR)  in cypress_nor_sr_ready_and_clear_reg()
118 			dev_err(nor->dev, "Erase Error occurred\n");  in cypress_nor_sr_ready_and_clear_reg()
120 			dev_err(nor->dev, "Programming Error occurred\n");  in cypress_nor_sr_ready_and_clear_reg()
122 		spansion_nor_clear_sr(nor);  in cypress_nor_sr_ready_and_clear_reg()
124 		ret = spi_nor_write_disable(nor);  in cypress_nor_sr_ready_and_clear_reg()
131 	return !(nor->bouncebuf[0] & SR_WIP);  in cypress_nor_sr_ready_and_clear_reg()
137  * @nor:	pointer to 'struct spi_nor'.
141 static int cypress_nor_sr_ready_and_clear(struct spi_nor *nor)  in cypress_nor_sr_ready_and_clear()  argument
143 	struct spi_nor_flash_parameter *params = nor->params;  in cypress_nor_sr_ready_and_clear()
150 		ret = cypress_nor_sr_ready_and_clear_reg(nor, addr);  in cypress_nor_sr_ready_and_clear()
160 static int cypress_nor_set_memlat(struct spi_nor *nor, u64 addr)  in cypress_nor_set_memlat()  argument
163 	u8 *buf = nor->bouncebuf;  in cypress_nor_set_memlat()
165 	u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;  in cypress_nor_set_memlat()
170 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_set_memlat()
181 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in cypress_nor_set_memlat()
185 	nor->read_dummy = 24;  in cypress_nor_set_memlat()
190 static int cypress_nor_set_octal_dtr_bits(struct spi_nor *nor, u64 addr)  in cypress_nor_set_octal_dtr_bits()  argument
193 	u8 *buf = nor->bouncebuf;  in cypress_nor_set_octal_dtr_bits()
198 		CYPRESS_NOR_WR_ANY_REG_OP(nor->params->addr_mode_nbytes,  in cypress_nor_set_octal_dtr_bits()
201 	return spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in cypress_nor_set_octal_dtr_bits()
204 static int cypress_nor_octal_dtr_en(struct spi_nor *nor)  in cypress_nor_octal_dtr_en()  argument
206 	const struct spi_nor_flash_parameter *params = nor->params;  in cypress_nor_octal_dtr_en()
207 	u8 *buf = nor->bouncebuf;  in cypress_nor_octal_dtr_en()
213 		ret = cypress_nor_set_memlat(nor, addr);  in cypress_nor_octal_dtr_en()
218 		ret = cypress_nor_set_octal_dtr_bits(nor, addr);  in cypress_nor_octal_dtr_en()
224 	ret = spi_nor_read_id(nor, nor->addr_nbytes, 3, buf,  in cypress_nor_octal_dtr_en()
227 		dev_dbg(nor->dev, "error %d reading JEDEC ID after enabling 8D-8D-8D mode\n", ret);  in cypress_nor_octal_dtr_en()
231 	if (memcmp(buf, nor->info->id, nor->info->id_len))  in cypress_nor_octal_dtr_en()
237 static int cypress_nor_set_single_spi_bits(struct spi_nor *nor, u64 addr)  in cypress_nor_set_single_spi_bits()  argument
240 	u8 *buf = nor->bouncebuf;  in cypress_nor_set_single_spi_bits()
250 		CYPRESS_NOR_WR_ANY_REG_OP(nor->addr_nbytes, addr, 2, buf);  in cypress_nor_set_single_spi_bits()
251 	return spi_nor_write_any_volatile_reg(nor, &op, SNOR_PROTO_8_8_8_DTR);  in cypress_nor_set_single_spi_bits()
254 static int cypress_nor_octal_dtr_dis(struct spi_nor *nor)  in cypress_nor_octal_dtr_dis()  argument
256 	const struct spi_nor_flash_parameter *params = nor->params;  in cypress_nor_octal_dtr_dis()
257 	u8 *buf = nor->bouncebuf;  in cypress_nor_octal_dtr_dis()
263 		ret = cypress_nor_set_single_spi_bits(nor, addr);  in cypress_nor_octal_dtr_dis()
269 	ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1);  in cypress_nor_octal_dtr_dis()
271 		dev_dbg(nor->dev, "error %d reading JEDEC ID after disabling 8D-8D-8D mode\n", ret);  in cypress_nor_octal_dtr_dis()
275 	if (memcmp(buf, nor->info->id, nor->info->id_len))  in cypress_nor_octal_dtr_dis()
281 static int cypress_nor_quad_enable_volatile_reg(struct spi_nor *nor, u64 addr)  in cypress_nor_quad_enable_volatile_reg()  argument
284 	u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;  in cypress_nor_quad_enable_volatile_reg()
290 					  nor->bouncebuf);  in cypress_nor_quad_enable_volatile_reg()
292 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_quad_enable_volatile_reg()
296 	if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR1_QUAD_EN)  in cypress_nor_quad_enable_volatile_reg()
300 	nor->bouncebuf[0] |= SPINOR_REG_CYPRESS_CFR1_QUAD_EN;  in cypress_nor_quad_enable_volatile_reg()
303 					  nor->bouncebuf);  in cypress_nor_quad_enable_volatile_reg()
304 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in cypress_nor_quad_enable_volatile_reg()
308 	cfr1v_written = nor->bouncebuf[0];  in cypress_nor_quad_enable_volatile_reg()
313 					  nor->bouncebuf);  in cypress_nor_quad_enable_volatile_reg()
314 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_quad_enable_volatile_reg()
318 	if (nor->bouncebuf[0] != cfr1v_written) {  in cypress_nor_quad_enable_volatile_reg()
319 		dev_err(nor->dev, "CFR1: Read back test failed\n");  in cypress_nor_quad_enable_volatile_reg()
329  * @nor:	pointer to a 'struct spi_nor'
340 static int cypress_nor_quad_enable_volatile(struct spi_nor *nor)  in cypress_nor_quad_enable_volatile()  argument
342 	struct spi_nor_flash_parameter *params = nor->params;  in cypress_nor_quad_enable_volatile()
349 		ret = cypress_nor_quad_enable_volatile_reg(nor, addr);  in cypress_nor_quad_enable_volatile()
361  * @nor:		pointer to a 'struct spi_nor'
370 static int cypress_nor_determine_addr_mode_by_sr1(struct spi_nor *nor,  in cypress_nor_determine_addr_mode_by_sr1()  argument
375 					  nor->bouncebuf);  in cypress_nor_determine_addr_mode_by_sr1()
379 	ret = spi_nor_read_sr(nor, &nor->bouncebuf[1]);  in cypress_nor_determine_addr_mode_by_sr1()
383 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_determine_addr_mode_by_sr1()
387 	is3byte = (nor->bouncebuf[0] == nor->bouncebuf[1]);  in cypress_nor_determine_addr_mode_by_sr1()
391 					  nor->bouncebuf);  in cypress_nor_determine_addr_mode_by_sr1()
392 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_determine_addr_mode_by_sr1()
396 	is4byte = (nor->bouncebuf[0] == nor->bouncebuf[1]);  in cypress_nor_determine_addr_mode_by_sr1()
411  * @nor:		pointer to a 'struct spi_nor'
419 static int cypress_nor_set_addr_mode_nbytes(struct spi_nor *nor)  in cypress_nor_set_addr_mode_nbytes()  argument
429 	ret = spi_nor_write_enable(nor);  in cypress_nor_set_addr_mode_nbytes()
432 	ret = cypress_nor_determine_addr_mode_by_sr1(nor, &addr_mode);  in cypress_nor_set_addr_mode_nbytes()
434 		ret = spi_nor_set_4byte_addr_mode(nor, true);  in cypress_nor_set_addr_mode_nbytes()
437 		return spi_nor_write_disable(nor);  in cypress_nor_set_addr_mode_nbytes()
439 	ret = spi_nor_write_disable(nor);  in cypress_nor_set_addr_mode_nbytes()
449 					  0, nor->bouncebuf);  in cypress_nor_set_addr_mode_nbytes()
450 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_set_addr_mode_nbytes()
454 	if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR2_ADRBYT) {  in cypress_nor_set_addr_mode_nbytes()
456 			return spi_nor_set_4byte_addr_mode(nor, true);  in cypress_nor_set_addr_mode_nbytes()
459 			return spi_nor_set_4byte_addr_mode(nor, true);  in cypress_nor_set_addr_mode_nbytes()
462 	nor->params->addr_nbytes = addr_mode;  in cypress_nor_set_addr_mode_nbytes()
463 	nor->params->addr_mode_nbytes = addr_mode;  in cypress_nor_set_addr_mode_nbytes()
470  * @nor:	pointer to a 'struct spi_nor'
478 static int cypress_nor_get_page_size(struct spi_nor *nor)  in cypress_nor_get_page_size()  argument
481 		CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes,  in cypress_nor_get_page_size()
482 					  0, 0, nor->bouncebuf);  in cypress_nor_get_page_size()
483 	struct spi_nor_flash_parameter *params = nor->params;  in cypress_nor_get_page_size()
495 		ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_get_page_size()
499 		if (!(nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR3_PGSZ))  in cypress_nor_get_page_size()
508 static void cypress_nor_ecc_init(struct spi_nor *nor)  in cypress_nor_ecc_init()  argument
515 	nor->params->writesize = 16;  in cypress_nor_ecc_init()
516 	nor->flags |= SNOR_F_ECC;  in cypress_nor_ecc_init()
520 s25fs256t_post_bfpt_fixup(struct spi_nor *nor,  in s25fs256t_post_bfpt_fixup()  argument
527 	ret = cypress_nor_set_addr_mode_nbytes(nor);  in s25fs256t_post_bfpt_fixup()
533 		CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes,  in s25fs256t_post_bfpt_fixup()
535 					  nor->bouncebuf);  in s25fs256t_post_bfpt_fixup()
536 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in s25fs256t_post_bfpt_fixup()
541 	if (nor->bouncebuf[0])  in s25fs256t_post_bfpt_fixup()
547 static int s25fs256t_post_sfdp_fixup(struct spi_nor *nor)  in s25fs256t_post_sfdp_fixup()  argument
549 	struct spi_nor_flash_parameter *params = nor->params;  in s25fs256t_post_sfdp_fixup()
556 	params->vreg_offset = devm_kmalloc(nor->dev, sizeof(u32), GFP_KERNEL);  in s25fs256t_post_sfdp_fixup()
569 	return cypress_nor_get_page_size(nor);  in s25fs256t_post_sfdp_fixup()
572 static int s25fs256t_late_init(struct spi_nor *nor)  in s25fs256t_late_init()  argument
574 	cypress_nor_ecc_init(nor);  in s25fs256t_late_init()
586 s25hx_t_post_bfpt_fixup(struct spi_nor *nor,  in s25hx_t_post_bfpt_fixup()  argument
592 	ret = cypress_nor_set_addr_mode_nbytes(nor);  in s25hx_t_post_bfpt_fixup()
597 	nor->params->quad_enable = cypress_nor_quad_enable_volatile;  in s25hx_t_post_bfpt_fixup()
602 static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor)  in s25hx_t_post_sfdp_fixup()  argument
604 	struct spi_nor_flash_parameter *params = nor->params;  in s25hx_t_post_sfdp_fixup()
609 		dev_err(nor->dev, "%s failed. The volatile register offset could not be retrieved from SFDP.\n",  in s25hx_t_post_sfdp_fixup()
635 	return cypress_nor_get_page_size(nor);  in s25hx_t_post_sfdp_fixup()
638 static int s25hx_t_late_init(struct spi_nor *nor)  in s25hx_t_late_init()  argument
640 	struct spi_nor_flash_parameter *params = nor->params;  in s25hx_t_late_init()
645 	cypress_nor_ecc_init(nor);  in s25hx_t_late_init()
658  * @nor:		pointer to a 'struct spi_nor'
666 static int cypress_nor_set_octal_dtr(struct spi_nor *nor, bool enable)  in cypress_nor_set_octal_dtr()  argument
668 	return enable ? cypress_nor_octal_dtr_en(nor) :  in cypress_nor_set_octal_dtr()
669 			cypress_nor_octal_dtr_dis(nor);  in cypress_nor_set_octal_dtr()
672 static int s28hx_t_post_sfdp_fixup(struct spi_nor *nor)  in s28hx_t_post_sfdp_fixup()  argument
674 	struct spi_nor_flash_parameter *params = nor->params;  in s28hx_t_post_sfdp_fixup()
677 		dev_err(nor->dev, "%s failed. The volatile register offset could not be retrieved from SFDP.\n",  in s28hx_t_post_sfdp_fixup()
711 	return cypress_nor_get_page_size(nor);  in s28hx_t_post_sfdp_fixup()
714 static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor,  in s28hx_t_post_bfpt_fixup()  argument
718 	return cypress_nor_set_addr_mode_nbytes(nor);  in s28hx_t_post_bfpt_fixup()
721 static int s28hx_t_late_init(struct spi_nor *nor)  in s28hx_t_late_init()  argument
723 	struct spi_nor_flash_parameter *params = nor->params;  in s28hx_t_late_init()
727 	cypress_nor_ecc_init(nor);  in s28hx_t_late_init()
739 s25fs_s_nor_post_bfpt_fixups(struct spi_nor *nor,  in s25fs_s_nor_post_bfpt_fixups()  argument
749 	nor->params->page_size = 256;  in s25fs_s_nor_post_bfpt_fixups()
913  * @nor:	pointer to 'struct spi_nor'.
917 static int spansion_nor_sr_ready_and_clear(struct spi_nor *nor)  in spansion_nor_sr_ready_and_clear()  argument
921 	ret = spi_nor_read_sr(nor, nor->bouncebuf);  in spansion_nor_sr_ready_and_clear()
925 	if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {  in spansion_nor_sr_ready_and_clear()
926 		if (nor->bouncebuf[0] & SR_E_ERR)  in spansion_nor_sr_ready_and_clear()
927 			dev_err(nor->dev, "Erase Error occurred\n");  in spansion_nor_sr_ready_and_clear()
929 			dev_err(nor->dev, "Programming Error occurred\n");  in spansion_nor_sr_ready_and_clear()
931 		spansion_nor_clear_sr(nor);  in spansion_nor_sr_ready_and_clear()
939 		ret = spi_nor_write_disable(nor);  in spansion_nor_sr_ready_and_clear()
946 	return !(nor->bouncebuf[0] & SR_WIP);  in spansion_nor_sr_ready_and_clear()
949 static int spansion_nor_late_init(struct spi_nor *nor)  in spansion_nor_late_init()  argument
951 	struct spi_nor_flash_parameter *params = nor->params;  in spansion_nor_late_init()
953 	u8 mfr_flags = nor->info->mfr_flags;  in spansion_nor_late_init()
956 		nor->flags |= SNOR_F_4B_OPCODES;  in spansion_nor_late_init()
958 		nor->erase_opcode = SPINOR_OP_SE;  in spansion_nor_late_init()
959 		nor->mtd.erasesize = nor->info->sector_size;  in spansion_nor_late_init()
963 		priv_params = devm_kmalloc(nor->dev, sizeof(*priv_params),  in spansion_nor_late_init()