// SPDX-License-Identifier: GPL-2.0 /* * Copyright 2017 ATMEL * Copyright 2017 Free Electrons * * Author: Boris Brezillon <[email protected]> * * Derived from the atmel_nand.c driver which contained the following * copyrights: * * Copyright 2003 Rick Bronson * * Derived from drivers/mtd/nand/autcpu12.c (removed in v3.8) * Copyright 2001 Thomas Gleixner ([email protected]) * * Derived from drivers/mtd/spia.c (removed in v3.8) * Copyright 2000 Steven J. Hill ([email protected]) * * * Add Hardware ECC support for AT91SAM9260 / AT91SAM9263 * Richard Genoud ([email protected]), Adeneo Copyright 2007 * * Derived from Das U-Boot source code * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c) * Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas * * Add Programmable Multibit ECC support for various AT91 SoC * Copyright 2012 ATMEL, Hong Xu * * Add Nand Flash Controller support for SAMA5 SoC * Copyright 2013 ATMEL, Josh Wu ([email protected]) * * A few words about the naming convention in this file. This convention * applies to structure and function names. * * Prefixes: * * - atmel_nand_: all generic structures/functions * - atmel_smc_nand_: all structures/functions specific to the SMC interface * (at91sam9 and avr32 SoCs) * - atmel_hsmc_nand_: all structures/functions specific to the HSMC interface * (sama5 SoCs and later) * - atmel_nfc_: all structures/functions used to manipulate the NFC sub-block * that is available in the HSMC block * - <soc>_nand_: all SoC specific structures/functions */ #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/genalloc.h> #include <linux/gpio/consumer.h> #include <linux/interrupt.h> #include <linux/mfd/syscon.h> #include <linux/mfd/syscon/atmel-matrix.h> #include <linux/mfd/syscon/atmel-smc.h> #include <linux/module.h> #include <linux/mtd/rawnand.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/iopoll.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <soc/at91/atmel-sfr.h> #include "pmecc.h" #define ATMEL_HSMC_NFC_CFG … #define ATMEL_HSMC_NFC_CFG_SPARESIZE(x) … #define ATMEL_HSMC_NFC_CFG_SPARESIZE_MASK … #define ATMEL_HSMC_NFC_CFG_DTO(cyc, mul) … #define ATMEL_HSMC_NFC_CFG_DTO_MAX … #define ATMEL_HSMC_NFC_CFG_RBEDGE … #define ATMEL_HSMC_NFC_CFG_FALLING_EDGE … #define ATMEL_HSMC_NFC_CFG_RSPARE … #define ATMEL_HSMC_NFC_CFG_WSPARE … #define ATMEL_HSMC_NFC_CFG_PAGESIZE_MASK … #define ATMEL_HSMC_NFC_CFG_PAGESIZE(x) … #define ATMEL_HSMC_NFC_CTRL … #define ATMEL_HSMC_NFC_CTRL_EN … #define ATMEL_HSMC_NFC_CTRL_DIS … #define ATMEL_HSMC_NFC_SR … #define ATMEL_HSMC_NFC_IER … #define ATMEL_HSMC_NFC_IDR … #define ATMEL_HSMC_NFC_IMR … #define ATMEL_HSMC_NFC_SR_ENABLED … #define ATMEL_HSMC_NFC_SR_RB_RISE … #define ATMEL_HSMC_NFC_SR_RB_FALL … #define ATMEL_HSMC_NFC_SR_BUSY … #define ATMEL_HSMC_NFC_SR_WR … #define ATMEL_HSMC_NFC_SR_CSID … #define ATMEL_HSMC_NFC_SR_XFRDONE … #define ATMEL_HSMC_NFC_SR_CMDDONE … #define ATMEL_HSMC_NFC_SR_DTOE … #define ATMEL_HSMC_NFC_SR_UNDEF … #define ATMEL_HSMC_NFC_SR_AWB … #define ATMEL_HSMC_NFC_SR_NFCASE … #define ATMEL_HSMC_NFC_SR_ERRORS … #define ATMEL_HSMC_NFC_SR_RBEDGE(x) … #define ATMEL_HSMC_NFC_ADDR … #define ATMEL_HSMC_NFC_BANK … #define ATMEL_NFC_MAX_RB_ID … #define ATMEL_NFC_SRAM_SIZE … #define ATMEL_NFC_CMD(pos, cmd) … #define ATMEL_NFC_VCMD2 … #define ATMEL_NFC_ACYCLE(naddrs) … #define ATMEL_NFC_CSID(cs) … #define ATMEL_NFC_DATAEN … #define ATMEL_NFC_NFCWR … #define ATMEL_NFC_MAX_ADDR_CYCLES … #define ATMEL_NAND_ALE_OFFSET … #define ATMEL_NAND_CLE_OFFSET … #define DEFAULT_TIMEOUT_MS … #define MIN_DMA_LEN … static bool atmel_nand_avoid_dma __read_mostly; MODULE_PARM_DESC(…) …; module_param_named(avoiddma, atmel_nand_avoid_dma, bool, 0400); enum atmel_nand_rb_type { … }; struct atmel_nand_rb { … }; struct atmel_nand_cs { … }; struct atmel_nand { … }; static inline struct atmel_nand *to_atmel_nand(struct nand_chip *chip) { … } enum atmel_nfc_data_xfer { … }; struct atmel_nfc_op { … }; struct atmel_nand_controller; struct atmel_nand_controller_caps; struct atmel_nand_controller_ops { … }; struct atmel_nand_controller_caps { … }; struct atmel_nand_controller { … }; static inline struct atmel_nand_controller * to_nand_controller(struct nand_controller *ctl) { … } struct atmel_smc_nand_ebi_csa_cfg { … }; struct atmel_smc_nand_controller { … }; static inline struct atmel_smc_nand_controller * to_smc_nand_controller(struct nand_controller *ctl) { … } struct atmel_hsmc_nand_controller { … }; static inline struct atmel_hsmc_nand_controller * to_hsmc_nand_controller(struct nand_controller *ctl) { … } static bool atmel_nfc_op_done(struct atmel_nfc_op *op, u32 status) { … } static irqreturn_t atmel_nfc_interrupt(int irq, void *data) { … } static int atmel_nfc_wait(struct atmel_hsmc_nand_controller *nc, bool poll, unsigned int timeout_ms) { … } static void atmel_nand_dma_transfer_finished(void *data) { … } static int atmel_nand_dma_transfer(struct atmel_nand_controller *nc, void *buf, dma_addr_t dev_dma, size_t len, enum dma_data_direction dir) { … } static int atmel_nfc_exec_op(struct atmel_hsmc_nand_controller *nc, bool poll) { … } static void atmel_nand_data_in(struct atmel_nand *nand, void *buf, unsigned int len, bool force_8bit) { … } static void atmel_nand_data_out(struct atmel_nand *nand, const void *buf, unsigned int len, bool force_8bit) { … } static int atmel_nand_waitrdy(struct atmel_nand *nand, unsigned int timeout_ms) { … } static int atmel_hsmc_nand_waitrdy(struct atmel_nand *nand, unsigned int timeout_ms) { … } static void atmel_nand_select_target(struct atmel_nand *nand, unsigned int cs) { … } static void atmel_hsmc_nand_select_target(struct atmel_nand *nand, unsigned int cs) { … } static int atmel_smc_nand_exec_instr(struct atmel_nand *nand, const struct nand_op_instr *instr) { … } static int atmel_smc_nand_exec_op(struct atmel_nand *nand, const struct nand_operation *op, bool check_only) { … } static int atmel_hsmc_exec_cmd_addr(struct nand_chip *chip, const struct nand_subop *subop) { … } static int atmel_hsmc_exec_rw(struct nand_chip *chip, const struct nand_subop *subop) { … } static int atmel_hsmc_exec_waitrdy(struct nand_chip *chip, const struct nand_subop *subop) { … } static const struct nand_op_parser atmel_hsmc_op_parser = …; static int atmel_hsmc_nand_exec_op(struct atmel_nand *nand, const struct nand_operation *op, bool check_only) { … } static void atmel_nfc_copy_to_sram(struct nand_chip *chip, const u8 *buf, bool oob_required) { … } static void atmel_nfc_copy_from_sram(struct nand_chip *chip, u8 *buf, bool oob_required) { … } static void atmel_nfc_set_op_addr(struct nand_chip *chip, int page, int column) { … } static int atmel_nand_pmecc_enable(struct nand_chip *chip, int op, bool raw) { … } static void atmel_nand_pmecc_disable(struct nand_chip *chip, bool raw) { … } static int atmel_nand_pmecc_generate_eccbytes(struct nand_chip *chip, bool raw) { … } static int atmel_nand_pmecc_correct_data(struct nand_chip *chip, void *buf, bool raw) { … } static int atmel_nand_pmecc_write_pg(struct nand_chip *chip, const u8 *buf, bool oob_required, int page, bool raw) { … } static int atmel_nand_pmecc_write_page(struct nand_chip *chip, const u8 *buf, int oob_required, int page) { … } static int atmel_nand_pmecc_write_page_raw(struct nand_chip *chip, const u8 *buf, int oob_required, int page) { … } static int atmel_nand_pmecc_read_pg(struct nand_chip *chip, u8 *buf, bool oob_required, int page, bool raw) { … } static int atmel_nand_pmecc_read_page(struct nand_chip *chip, u8 *buf, int oob_required, int page) { … } static int atmel_nand_pmecc_read_page_raw(struct nand_chip *chip, u8 *buf, int oob_required, int page) { … } static int atmel_hsmc_nand_pmecc_write_pg(struct nand_chip *chip, const u8 *buf, bool oob_required, int page, bool raw) { … } static int atmel_hsmc_nand_pmecc_write_page(struct nand_chip *chip, const u8 *buf, int oob_required, int page) { … } static int atmel_hsmc_nand_pmecc_write_page_raw(struct nand_chip *chip, const u8 *buf, int oob_required, int page) { … } static int atmel_hsmc_nand_pmecc_read_pg(struct nand_chip *chip, u8 *buf, bool oob_required, int page, bool raw) { … } static int atmel_hsmc_nand_pmecc_read_page(struct nand_chip *chip, u8 *buf, int oob_required, int page) { … } static int atmel_hsmc_nand_pmecc_read_page_raw(struct nand_chip *chip, u8 *buf, int oob_required, int page) { … } static int atmel_nand_pmecc_init(struct nand_chip *chip) { … } static int atmel_nand_ecc_init(struct nand_chip *chip) { … } static int atmel_hsmc_nand_ecc_init(struct nand_chip *chip) { … } static int atmel_smc_nand_prepare_smcconf(struct atmel_nand *nand, const struct nand_interface_config *conf, struct atmel_smc_cs_conf *smcconf) { … } static int atmel_smc_nand_setup_interface(struct atmel_nand *nand, int csline, const struct nand_interface_config *conf) { … } static int atmel_hsmc_nand_setup_interface(struct atmel_nand *nand, int csline, const struct nand_interface_config *conf) { … } static int atmel_nand_setup_interface(struct nand_chip *chip, int csline, const struct nand_interface_config *conf) { … } static int atmel_nand_exec_op(struct nand_chip *chip, const struct nand_operation *op, bool check_only) { … } static void atmel_nand_init(struct atmel_nand_controller *nc, struct atmel_nand *nand) { … } static void atmel_smc_nand_init(struct atmel_nand_controller *nc, struct atmel_nand *nand) { … } static int atmel_nand_controller_remove_nand(struct atmel_nand *nand) { … } static struct atmel_nand *atmel_nand_create(struct atmel_nand_controller *nc, struct device_node *np, int reg_cells) { … } static int atmel_nand_controller_add_nand(struct atmel_nand_controller *nc, struct atmel_nand *nand) { … } static int atmel_nand_controller_remove_nands(struct atmel_nand_controller *nc) { … } static int atmel_nand_controller_legacy_add_nands(struct atmel_nand_controller *nc) { … } static int atmel_nand_controller_add_nands(struct atmel_nand_controller *nc) { … } static void atmel_nand_controller_cleanup(struct atmel_nand_controller *nc) { … } static const struct atmel_smc_nand_ebi_csa_cfg at91sam9260_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg at91sam9261_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg at91sam9263_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg at91sam9rl_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg at91sam9g45_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg at91sam9n12_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg at91sam9x5_ebi_csa = …; static const struct atmel_smc_nand_ebi_csa_cfg sam9x60_ebi_csa = …; static const struct of_device_id __maybe_unused atmel_ebi_csa_regmap_of_ids[] = …; static int atmel_nand_attach_chip(struct nand_chip *chip) { … } static const struct nand_controller_ops atmel_nand_controller_ops = …; static int atmel_nand_controller_init(struct atmel_nand_controller *nc, struct platform_device *pdev, const struct atmel_nand_controller_caps *caps) { … } static int atmel_smc_nand_controller_init(struct atmel_smc_nand_controller *nc) { … } static int atmel_hsmc_nand_controller_legacy_init(struct atmel_hsmc_nand_controller *nc) { … } static int atmel_hsmc_nand_controller_init(struct atmel_hsmc_nand_controller *nc) { … } static int atmel_hsmc_nand_controller_remove(struct atmel_nand_controller *nc) { … } static int atmel_hsmc_nand_controller_probe(struct platform_device *pdev, const struct atmel_nand_controller_caps *caps) { … } static const struct atmel_nand_controller_ops atmel_hsmc_nc_ops = …; static const struct atmel_nand_controller_caps atmel_sama5_nc_caps = …; /* Only used to parse old bindings. */ static const struct atmel_nand_controller_caps atmel_sama5_nand_caps = …; static int atmel_smc_nand_controller_probe(struct platform_device *pdev, const struct atmel_nand_controller_caps *caps) { … } static int atmel_smc_nand_controller_remove(struct atmel_nand_controller *nc) { … } /* * The SMC reg layout of at91rm9200 is completely different which prevents us * from re-using atmel_smc_nand_setup_interface() for the * ->setup_interface() hook. * At this point, there's no support for the at91rm9200 SMC IP, so we leave * ->setup_interface() unassigned. */ static const struct atmel_nand_controller_ops at91rm9200_nc_ops = …; static const struct atmel_nand_controller_caps atmel_rm9200_nc_caps = …; static const struct atmel_nand_controller_ops atmel_smc_nc_ops = …; static const struct atmel_nand_controller_caps atmel_sam9260_nc_caps = …; static const struct atmel_nand_controller_caps atmel_sam9261_nc_caps = …; static const struct atmel_nand_controller_caps atmel_sam9g45_nc_caps = …; static const struct atmel_nand_controller_caps microchip_sam9x60_nc_caps = …; /* Only used to parse old bindings. */ static const struct atmel_nand_controller_caps atmel_rm9200_nand_caps = …; static const struct atmel_nand_controller_caps atmel_sam9261_nand_caps = …; static const struct atmel_nand_controller_caps atmel_sam9g45_nand_caps = …; static const struct of_device_id atmel_nand_controller_of_ids[] = …; MODULE_DEVICE_TABLE(of, atmel_nand_controller_of_ids); static int atmel_nand_controller_probe(struct platform_device *pdev) { … } static void atmel_nand_controller_remove(struct platform_device *pdev) { … } static __maybe_unused int atmel_nand_controller_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(atmel_nand_controller_pm_ops, NULL, atmel_nand_controller_resume); static struct platform_driver atmel_nand_controller_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
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