462 строки
14 KiB
C
462 строки
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2005, Intec Automation Inc.
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* Copyright (C) 2014, Freescale Semiconductor, Inc.
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*/
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#include <linux/mtd/spi-nor.h>
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#include "core.h"
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/* flash_info mfr_flag. Used to read proprietary FSR register. */
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#define USE_FSR BIT(0)
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#define SPINOR_OP_RDFSR 0x70 /* Read flag status register */
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#define SPINOR_OP_CLFSR 0x50 /* Clear flag status register */
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#define SPINOR_OP_MT_DTR_RD 0xfd /* Fast Read opcode in DTR mode */
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#define SPINOR_OP_MT_RD_ANY_REG 0x85 /* Read volatile register */
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#define SPINOR_OP_MT_WR_ANY_REG 0x81 /* Write volatile register */
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#define SPINOR_REG_MT_CFR0V 0x00 /* For setting octal DTR mode */
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#define SPINOR_REG_MT_CFR1V 0x01 /* For setting dummy cycles */
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#define SPINOR_REG_MT_CFR1V_DEF 0x1f /* Default dummy cycles */
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#define SPINOR_MT_OCT_DTR 0xe7 /* Enable Octal DTR. */
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#define SPINOR_MT_EXSPI 0xff /* Enable Extended SPI (default) */
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/* Flag Status Register bits */
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#define FSR_READY BIT(7) /* Device status, 0 = Busy, 1 = Ready */
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#define FSR_E_ERR BIT(5) /* Erase operation status */
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#define FSR_P_ERR BIT(4) /* Program operation status */
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#define FSR_PT_ERR BIT(1) /* Protection error bit */
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static int micron_st_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
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{
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struct spi_mem_op op;
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u8 *buf = nor->bouncebuf;
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int ret;
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if (enable) {
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/* Use 20 dummy cycles for memory array reads. */
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ret = spi_nor_write_enable(nor);
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if (ret)
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return ret;
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*buf = 20;
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op = (struct spi_mem_op)
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SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_MT_WR_ANY_REG, 1),
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SPI_MEM_OP_ADDR(3, SPINOR_REG_MT_CFR1V, 1),
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SPI_MEM_OP_NO_DUMMY,
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SPI_MEM_OP_DATA_OUT(1, buf, 1));
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ret = spi_mem_exec_op(nor->spimem, &op);
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if (ret)
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return ret;
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ret = spi_nor_wait_till_ready(nor);
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if (ret)
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return ret;
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}
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ret = spi_nor_write_enable(nor);
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if (ret)
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return ret;
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if (enable) {
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buf[0] = SPINOR_MT_OCT_DTR;
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} else {
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/*
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* The register is 1-byte wide, but 1-byte transactions are not
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* allowed in 8D-8D-8D mode. The next register is the dummy
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* cycle configuration register. Since the transaction needs to
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* be at least 2 bytes wide, set the next register to its
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* default value. This also makes sense because the value was
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* changed when enabling 8D-8D-8D mode, it should be reset when
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* disabling.
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*/
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buf[0] = SPINOR_MT_EXSPI;
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buf[1] = SPINOR_REG_MT_CFR1V_DEF;
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}
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op = (struct spi_mem_op)
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SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_MT_WR_ANY_REG, 1),
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SPI_MEM_OP_ADDR(enable ? 3 : 4,
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SPINOR_REG_MT_CFR0V, 1),
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SPI_MEM_OP_NO_DUMMY,
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SPI_MEM_OP_DATA_OUT(enable ? 1 : 2, buf, 1));
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if (!enable)
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spi_nor_spimem_setup_op(nor, &op, SNOR_PROTO_8_8_8_DTR);
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ret = spi_mem_exec_op(nor->spimem, &op);
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if (ret)
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return ret;
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/* Read flash ID to make sure the switch was successful. */
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op = (struct spi_mem_op)
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SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 1),
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SPI_MEM_OP_NO_ADDR,
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SPI_MEM_OP_DUMMY(enable ? 8 : 0, 1),
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SPI_MEM_OP_DATA_IN(round_up(nor->info->id_len, 2),
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buf, 1));
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if (enable)
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spi_nor_spimem_setup_op(nor, &op, SNOR_PROTO_8_8_8_DTR);
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ret = spi_mem_exec_op(nor->spimem, &op);
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if (ret)
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return ret;
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if (memcmp(buf, nor->info->id, nor->info->id_len))
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return -EINVAL;
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return 0;
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}
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static void mt35xu512aba_default_init(struct spi_nor *nor)
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{
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nor->params->octal_dtr_enable = micron_st_nor_octal_dtr_enable;
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}
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static void mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)
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{
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/* Set the Fast Read settings. */
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nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;
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spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],
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0, 20, SPINOR_OP_MT_DTR_RD,
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SNOR_PROTO_8_8_8_DTR);
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nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;
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nor->params->rdsr_dummy = 8;
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nor->params->rdsr_addr_nbytes = 0;
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/*
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* The BFPT quad enable field is set to a reserved value so the quad
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* enable function is ignored by spi_nor_parse_bfpt(). Make sure we
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* disable it.
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*/
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nor->params->quad_enable = NULL;
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}
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static const struct spi_nor_fixups mt35xu512aba_fixups = {
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.default_init = mt35xu512aba_default_init,
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.post_sfdp = mt35xu512aba_post_sfdp_fixup,
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};
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static const struct flash_info micron_nor_parts[] = {
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{ "mt35xu512aba", INFO(0x2c5b1a, 0, 128 * 1024, 512)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_OCTAL_READ |
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SPI_NOR_OCTAL_DTR_READ | SPI_NOR_OCTAL_DTR_PP)
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FIXUP_FLAGS(SPI_NOR_4B_OPCODES | SPI_NOR_IO_MODE_EN_VOLATILE)
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MFR_FLAGS(USE_FSR)
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.fixups = &mt35xu512aba_fixups
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},
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{ "mt35xu02g", INFO(0x2c5b1c, 0, 128 * 1024, 2048)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_OCTAL_READ)
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FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
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MFR_FLAGS(USE_FSR)
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},
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};
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static const struct flash_info st_nor_parts[] = {
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{ "n25q016a", INFO(0x20bb15, 0, 64 * 1024, 32)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
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{ "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64)
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NO_SFDP_FLAGS(SPI_NOR_QUAD_READ) },
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{ "n25q032a", INFO(0x20bb16, 0, 64 * 1024, 64)
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NO_SFDP_FLAGS(SPI_NOR_QUAD_READ) },
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{ "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
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{ "n25q064a", INFO(0x20bb17, 0, 64 * 1024, 128)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
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{ "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256)
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FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
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SPI_NOR_BP3_SR_BIT6)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256)
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FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
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SPI_NOR_BP3_SR_BIT6)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "mt25ql256a", INFO6(0x20ba19, 0x104400, 64 * 1024, 512)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
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FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
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SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "mt25qu256a", INFO6(0x20bb19, 0x104400, 64 * 1024, 512)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
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FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q256ax1", INFO(0x20bb19, 0, 64 * 1024, 512)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "mt25ql512a", INFO6(0x20ba20, 0x104400, 64 * 1024, 1024)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
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FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024)
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FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
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SPI_NOR_BP3_SR_BIT6)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "mt25qu512a", INFO6(0x20bb20, 0x104400, 64 * 1024, 1024)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
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FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024)
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FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
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SPI_NOR_BP3_SR_BIT6)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048)
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FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
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SPI_NOR_BP3_SR_BIT6 | NO_CHIP_ERASE)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "n25q00a", INFO(0x20bb21, 0, 64 * 1024, 2048)
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FLAGS(NO_CHIP_ERASE)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "mt25ql02g", INFO(0x20ba22, 0, 64 * 1024, 4096)
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FLAGS(NO_CHIP_ERASE)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "mt25qu02g", INFO(0x20bb22, 0, 64 * 1024, 4096)
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FLAGS(NO_CHIP_ERASE)
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NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
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SPI_NOR_QUAD_READ)
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MFR_FLAGS(USE_FSR)
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},
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{ "m25p05", INFO(0x202010, 0, 32 * 1024, 2) },
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{ "m25p10", INFO(0x202011, 0, 32 * 1024, 4) },
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{ "m25p20", INFO(0x202012, 0, 64 * 1024, 4) },
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{ "m25p40", INFO(0x202013, 0, 64 * 1024, 8) },
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{ "m25p80", INFO(0x202014, 0, 64 * 1024, 16) },
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{ "m25p16", INFO(0x202015, 0, 64 * 1024, 32) },
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{ "m25p32", INFO(0x202016, 0, 64 * 1024, 64) },
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{ "m25p64", INFO(0x202017, 0, 64 * 1024, 128) },
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{ "m25p128", INFO(0x202018, 0, 256 * 1024, 64) },
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{ "m25p05-nonjedec", INFO(0, 0, 32 * 1024, 2) },
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{ "m25p10-nonjedec", INFO(0, 0, 32 * 1024, 4) },
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{ "m25p20-nonjedec", INFO(0, 0, 64 * 1024, 4) },
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{ "m25p40-nonjedec", INFO(0, 0, 64 * 1024, 8) },
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{ "m25p80-nonjedec", INFO(0, 0, 64 * 1024, 16) },
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{ "m25p16-nonjedec", INFO(0, 0, 64 * 1024, 32) },
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{ "m25p32-nonjedec", INFO(0, 0, 64 * 1024, 64) },
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{ "m25p64-nonjedec", INFO(0, 0, 64 * 1024, 128) },
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{ "m25p128-nonjedec", INFO(0, 0, 256 * 1024, 64) },
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{ "m45pe10", INFO(0x204011, 0, 64 * 1024, 2) },
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{ "m45pe80", INFO(0x204014, 0, 64 * 1024, 16) },
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{ "m45pe16", INFO(0x204015, 0, 64 * 1024, 32) },
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{ "m25pe20", INFO(0x208012, 0, 64 * 1024, 4) },
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{ "m25pe80", INFO(0x208014, 0, 64 * 1024, 16) },
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{ "m25pe16", INFO(0x208015, 0, 64 * 1024, 32)
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NO_SFDP_FLAGS(SECT_4K) },
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{ "m25px16", INFO(0x207115, 0, 64 * 1024, 32)
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NO_SFDP_FLAGS(SECT_4K) },
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{ "m25px32", INFO(0x207116, 0, 64 * 1024, 64)
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NO_SFDP_FLAGS(SECT_4K) },
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{ "m25px32-s0", INFO(0x207316, 0, 64 * 1024, 64)
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NO_SFDP_FLAGS(SECT_4K) },
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{ "m25px32-s1", INFO(0x206316, 0, 64 * 1024, 64)
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NO_SFDP_FLAGS(SECT_4K) },
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{ "m25px64", INFO(0x207117, 0, 64 * 1024, 128) },
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{ "m25px80", INFO(0x207114, 0, 64 * 1024, 16) },
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};
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/**
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* micron_st_nor_set_4byte_addr_mode() - Set 4-byte address mode for ST and
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* Micron flashes.
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* @nor: pointer to 'struct spi_nor'.
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* @enable: true to enter the 4-byte address mode, false to exit the 4-byte
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* address mode.
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*
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* Return: 0 on success, -errno otherwise.
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*/
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static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
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{
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int ret;
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ret = spi_nor_write_enable(nor);
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if (ret)
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return ret;
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ret = spi_nor_set_4byte_addr_mode(nor, enable);
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if (ret)
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return ret;
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return spi_nor_write_disable(nor);
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}
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/**
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* micron_st_nor_read_fsr() - Read the Flag Status Register.
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* @nor: pointer to 'struct spi_nor'
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* @fsr: pointer to a DMA-able buffer where the value of the
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* Flag Status Register will be written. Should be at least 2
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* bytes.
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*
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* Return: 0 on success, -errno otherwise.
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*/
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static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
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{
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int ret;
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if (nor->spimem) {
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struct spi_mem_op op =
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SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDFSR, 0),
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SPI_MEM_OP_NO_ADDR,
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SPI_MEM_OP_NO_DUMMY,
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SPI_MEM_OP_DATA_IN(1, fsr, 0));
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if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {
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op.addr.nbytes = nor->params->rdsr_addr_nbytes;
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op.dummy.nbytes = nor->params->rdsr_dummy;
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/*
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* We don't want to read only one byte in DTR mode. So,
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* read 2 and then discard the second byte.
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*/
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op.data.nbytes = 2;
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}
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spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
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ret = spi_mem_exec_op(nor->spimem, &op);
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} else {
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ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_RDFSR, fsr,
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1);
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}
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if (ret)
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dev_dbg(nor->dev, "error %d reading FSR\n", ret);
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return ret;
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}
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/**
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* micron_st_nor_clear_fsr() - Clear the Flag Status Register.
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* @nor: pointer to 'struct spi_nor'.
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*/
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static void micron_st_nor_clear_fsr(struct spi_nor *nor)
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{
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int ret;
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if (nor->spimem) {
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struct spi_mem_op op =
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SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLFSR, 0),
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SPI_MEM_OP_NO_ADDR,
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SPI_MEM_OP_NO_DUMMY,
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SPI_MEM_OP_NO_DATA);
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spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
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ret = spi_mem_exec_op(nor->spimem, &op);
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} else {
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ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLFSR,
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NULL, 0);
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}
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if (ret)
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dev_dbg(nor->dev, "error %d clearing FSR\n", ret);
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}
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/**
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* micron_st_nor_ready() - Query the Status Register as well as the Flag Status
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* Register to see if the flash is ready for new commands. If there are any
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* errors in the FSR clear them.
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* @nor: pointer to 'struct spi_nor'.
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*
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* Return: 1 if ready, 0 if not ready, -errno on errors.
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*/
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static int micron_st_nor_ready(struct spi_nor *nor)
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{
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int sr_ready, ret;
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sr_ready = spi_nor_sr_ready(nor);
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if (sr_ready < 0)
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return sr_ready;
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ret = micron_st_nor_read_fsr(nor, nor->bouncebuf);
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if (ret)
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return ret;
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if (nor->bouncebuf[0] & (FSR_E_ERR | FSR_P_ERR)) {
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if (nor->bouncebuf[0] & FSR_E_ERR)
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dev_err(nor->dev, "Erase operation failed.\n");
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else
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dev_err(nor->dev, "Program operation failed.\n");
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if (nor->bouncebuf[0] & FSR_PT_ERR)
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dev_err(nor->dev,
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"Attempted to modify a protected sector.\n");
|
|
|
|
micron_st_nor_clear_fsr(nor);
|
|
|
|
/*
|
|
* WEL bit remains set to one when an erase or page program
|
|
* error occurs. Issue a Write Disable command to protect
|
|
* against inadvertent writes that can possibly corrupt the
|
|
* contents of the memory.
|
|
*/
|
|
ret = spi_nor_write_disable(nor);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
return sr_ready && !!(nor->bouncebuf[0] & FSR_READY);
|
|
}
|
|
|
|
static void micron_st_nor_default_init(struct spi_nor *nor)
|
|
{
|
|
nor->flags |= SNOR_F_HAS_LOCK;
|
|
nor->flags &= ~SNOR_F_HAS_16BIT_SR;
|
|
nor->params->quad_enable = NULL;
|
|
nor->params->set_4byte_addr_mode = micron_st_nor_set_4byte_addr_mode;
|
|
}
|
|
|
|
static void micron_st_nor_late_init(struct spi_nor *nor)
|
|
{
|
|
if (nor->info->mfr_flags & USE_FSR)
|
|
nor->params->ready = micron_st_nor_ready;
|
|
}
|
|
|
|
static const struct spi_nor_fixups micron_st_nor_fixups = {
|
|
.default_init = micron_st_nor_default_init,
|
|
.late_init = micron_st_nor_late_init,
|
|
};
|
|
|
|
const struct spi_nor_manufacturer spi_nor_micron = {
|
|
.name = "micron",
|
|
.parts = micron_nor_parts,
|
|
.nparts = ARRAY_SIZE(micron_nor_parts),
|
|
.fixups = µn_st_nor_fixups,
|
|
};
|
|
|
|
const struct spi_nor_manufacturer spi_nor_st = {
|
|
.name = "st",
|
|
.parts = st_nor_parts,
|
|
.nparts = ARRAY_SIZE(st_nor_parts),
|
|
.fixups = µn_st_nor_fixups,
|
|
};
|