7 #include <linux/mtd/spi-nor.h>
31 /* Micron ST SPI NOR flash operations. */
50 static int micron_st_nor_octal_dtr_en(struct spi_nor *nor)  in micron_st_nor_octal_dtr_en()  argument
53 	u8 *buf = nor->bouncebuf;  in micron_st_nor_octal_dtr_en()
55 	u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;  in micron_st_nor_octal_dtr_en()
62 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in micron_st_nor_octal_dtr_en()
70 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in micron_st_nor_octal_dtr_en()
75 	ret = spi_nor_read_id(nor, 0, 8, buf, SNOR_PROTO_8_8_8_DTR);  in micron_st_nor_octal_dtr_en()
77 		dev_dbg(nor->dev, "error %d reading JEDEC ID after enabling 8D-8D-8D mode\n", ret);  in micron_st_nor_octal_dtr_en()
81 	if (memcmp(buf, nor->info->id, nor->info->id_len))  in micron_st_nor_octal_dtr_en()
87 static int micron_st_nor_octal_dtr_dis(struct spi_nor *nor)  in micron_st_nor_octal_dtr_dis()  argument
90 	u8 *buf = nor->bouncebuf;  in micron_st_nor_octal_dtr_dis()
104 		MICRON_ST_NOR_WR_ANY_REG_OP(nor->addr_nbytes,  in micron_st_nor_octal_dtr_dis()
106 	ret = spi_nor_write_any_volatile_reg(nor, &op, SNOR_PROTO_8_8_8_DTR);  in micron_st_nor_octal_dtr_dis()
111 	ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1);  in micron_st_nor_octal_dtr_dis()
113 		dev_dbg(nor->dev, "error %d reading JEDEC ID after disabling 8D-8D-8D mode\n", ret);  in micron_st_nor_octal_dtr_dis()
117 	if (memcmp(buf, nor->info->id, nor->info->id_len))  in micron_st_nor_octal_dtr_dis()
123 static int micron_st_nor_set_octal_dtr(struct spi_nor *nor, bool enable)  in micron_st_nor_set_octal_dtr()  argument
125 	return enable ? micron_st_nor_octal_dtr_en(nor) :  in micron_st_nor_set_octal_dtr()
126 			micron_st_nor_octal_dtr_dis(nor);  in micron_st_nor_set_octal_dtr()
129 static void mt35xu512aba_default_init(struct spi_nor *nor)  in mt35xu512aba_default_init()  argument
131 	nor->params->set_octal_dtr = micron_st_nor_set_octal_dtr;  in mt35xu512aba_default_init()
134 static int mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)  in mt35xu512aba_post_sfdp_fixup()  argument
137 	nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;  in mt35xu512aba_post_sfdp_fixup()
138 	spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],  in mt35xu512aba_post_sfdp_fixup()
142 	nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;  in mt35xu512aba_post_sfdp_fixup()
143 	nor->params->rdsr_dummy = 8;  in mt35xu512aba_post_sfdp_fixup()
144 	nor->params->rdsr_addr_nbytes = 0;  in mt35xu512aba_post_sfdp_fixup()
151 	nor->params->quad_enable = NULL;  in mt35xu512aba_post_sfdp_fixup()
308  * @nor:	pointer to 'struct spi_nor'
315 static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr)  in micron_st_nor_read_fsr()  argument
319 	if (nor->spimem) {  in micron_st_nor_read_fsr()
322 		if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {  in micron_st_nor_read_fsr()
323 			op.addr.nbytes = nor->params->rdsr_addr_nbytes;  in micron_st_nor_read_fsr()
324 			op.dummy.nbytes = nor->params->rdsr_dummy;  in micron_st_nor_read_fsr()
332 		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);  in micron_st_nor_read_fsr()
334 		ret = spi_mem_exec_op(nor->spimem, &op);  in micron_st_nor_read_fsr()
336 		ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_RDFSR, fsr,  in micron_st_nor_read_fsr()
341 		dev_dbg(nor->dev, "error %d reading FSR\n", ret);  in micron_st_nor_read_fsr()
348  * @nor:	pointer to 'struct spi_nor'.
350 static void micron_st_nor_clear_fsr(struct spi_nor *nor)  in micron_st_nor_clear_fsr()  argument
354 	if (nor->spimem) {  in micron_st_nor_clear_fsr()
357 		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);  in micron_st_nor_clear_fsr()
359 		ret = spi_mem_exec_op(nor->spimem, &op);  in micron_st_nor_clear_fsr()
361 		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLFSR,  in micron_st_nor_clear_fsr()
366 		dev_dbg(nor->dev, "error %d clearing FSR\n", ret);  in micron_st_nor_clear_fsr()
373  * @nor:	pointer to 'struct spi_nor'.
377 static int micron_st_nor_ready(struct spi_nor *nor)  in micron_st_nor_ready()  argument
381 	sr_ready = spi_nor_sr_ready(nor);  in micron_st_nor_ready()
385 	ret = micron_st_nor_read_fsr(nor, nor->bouncebuf);  in micron_st_nor_ready()
397 	if (nor->bouncebuf[0] & (FSR_E_ERR | FSR_P_ERR)) {  in micron_st_nor_ready()
398 		if (nor->bouncebuf[0] & FSR_E_ERR)  in micron_st_nor_ready()
399 			dev_err(nor->dev, "Erase operation failed.\n");  in micron_st_nor_ready()
401 			dev_err(nor->dev, "Program operation failed.\n");  in micron_st_nor_ready()
403 		if (nor->bouncebuf[0] & FSR_PT_ERR)  in micron_st_nor_ready()
404 			dev_err(nor->dev,  in micron_st_nor_ready()
407 		micron_st_nor_clear_fsr(nor);  in micron_st_nor_ready()
415 		ret = spi_nor_write_disable(nor);  in micron_st_nor_ready()
422 	return sr_ready && !!(nor->bouncebuf[0] & FSR_READY);  in micron_st_nor_ready()
425 static void micron_st_nor_default_init(struct spi_nor *nor)  in micron_st_nor_default_init()  argument
427 	nor->flags |= SNOR_F_HAS_LOCK;  in micron_st_nor_default_init()
428 	nor->flags &= ~SNOR_F_HAS_16BIT_SR;  in micron_st_nor_default_init()
429 	nor->params->quad_enable = NULL;  in micron_st_nor_default_init()
432 static int micron_st_nor_late_init(struct spi_nor *nor)  in micron_st_nor_late_init()  argument
434 	struct spi_nor_flash_parameter *params = nor->params;  in micron_st_nor_late_init()
436 	if (nor->info->mfr_flags & USE_FSR)  in micron_st_nor_late_init()