// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2005, Intec Automation Inc. * Copyright (C) 2014, Freescale Semiconductor, Inc. */ #include <linux/mtd/spi-nor.h> #include "core.h" /* flash_info mfr_flag. Used to read proprietary FSR register. */ #define USE_FSR … #define SPINOR_OP_MT_DIE_ERASE … #define SPINOR_OP_RDFSR … #define SPINOR_OP_CLFSR … #define SPINOR_OP_MT_DTR_RD … #define SPINOR_OP_MT_RD_ANY_REG … #define SPINOR_OP_MT_WR_ANY_REG … #define SPINOR_REG_MT_CFR0V … #define SPINOR_REG_MT_CFR1V … #define SPINOR_REG_MT_CFR1V_DEF … #define SPINOR_MT_OCT_DTR … #define SPINOR_MT_EXSPI … /* Flag Status Register bits */ #define FSR_READY … #define FSR_E_ERR … #define FSR_P_ERR … #define FSR_PT_ERR … /* Micron ST SPI NOR flash operations. */ #define MICRON_ST_NOR_WR_ANY_REG_OP(naddr, addr, ndata, buf) … #define MICRON_ST_RDFSR_OP(buf) … #define MICRON_ST_CLFSR_OP … static int micron_st_nor_octal_dtr_en(struct spi_nor *nor) { … } static int micron_st_nor_octal_dtr_dis(struct spi_nor *nor) { … } static int micron_st_nor_set_octal_dtr(struct spi_nor *nor, bool enable) { … } static void mt35xu512aba_default_init(struct spi_nor *nor) { … } static int mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor) { … } static const struct spi_nor_fixups mt35xu512aba_fixups = …; static const struct flash_info micron_nor_parts[] = …; static int mt25qu512a_post_bfpt_fixup(struct spi_nor *nor, const struct sfdp_parameter_header *bfpt_header, const struct sfdp_bfpt *bfpt) { … } static struct spi_nor_fixups mt25qu512a_fixups = …; static int st_nor_four_die_late_init(struct spi_nor *nor) { … } static int st_nor_two_die_late_init(struct spi_nor *nor) { … } static struct spi_nor_fixups n25q00_fixups = …; static struct spi_nor_fixups mt25q01_fixups = …; static struct spi_nor_fixups mt25q02_fixups = …; static const struct flash_info st_nor_parts[] = …; /** * micron_st_nor_read_fsr() - Read the Flag Status Register. * @nor: pointer to 'struct spi_nor' * @fsr: pointer to a DMA-able buffer where the value of the * Flag Status Register will be written. Should be at least 2 * bytes. * * Return: 0 on success, -errno otherwise. */ static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr) { … } /** * micron_st_nor_clear_fsr() - Clear the Flag Status Register. * @nor: pointer to 'struct spi_nor'. */ static void micron_st_nor_clear_fsr(struct spi_nor *nor) { … } /** * micron_st_nor_ready() - Query the Status Register as well as the Flag Status * Register to see if the flash is ready for new commands. If there are any * errors in the FSR clear them. * @nor: pointer to 'struct spi_nor'. * * Return: 1 if ready, 0 if not ready, -errno on errors. */ static int micron_st_nor_ready(struct spi_nor *nor) { … } static void micron_st_nor_default_init(struct spi_nor *nor) { … } static int micron_st_nor_late_init(struct spi_nor *nor) { … } static const struct spi_nor_fixups micron_st_nor_fixups = …; const struct spi_nor_manufacturer spi_nor_micron = …; const struct spi_nor_manufacturer spi_nor_st = …;
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