diff options
| -rw-r--r-- | drivers/mtd/nand/raw/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/mtd/nand/raw/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mtd/nand/raw/nuc900_nand.c | 304 |
3 files changed, 0 insertions, 313 deletions
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig index 9cff36a91864..e59de3f60cf6 100644 --- a/drivers/mtd/nand/raw/Kconfig +++ b/drivers/mtd/nand/raw/Kconfig @@ -351,14 +351,6 @@ config MTD_NAND_SOCRATES help Enables support for NAND Flash chips wired onto Socrates board. -config MTD_NAND_NUC900 - tristate "Nuvoton NUC9xx/w90p910 NAND controller" - depends on ARCH_W90X900 || COMPILE_TEST - depends on HAS_IOMEM - help - This enables the driver for the NAND Flash on evaluation board based - on w90p910 / NUC9xx. - source "drivers/mtd/nand/raw/ingenic/Kconfig" config MTD_NAND_FSMC diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile index 9b43fbff9742..a98721988e61 100644 --- a/drivers/mtd/nand/raw/Makefile +++ b/drivers/mtd/nand/raw/Makefile @@ -41,7 +41,6 @@ obj-$(CONFIG_MTD_NAND_SH_FLCTL) += sh_flctl.o obj-$(CONFIG_MTD_NAND_MXC) += mxc_nand.o obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o -obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o obj-$(CONFIG_MTD_NAND_VF610_NFC) += vf610_nfc.o obj-$(CONFIG_MTD_NAND_RICOH) += r852.o diff --git a/drivers/mtd/nand/raw/nuc900_nand.c b/drivers/mtd/nand/raw/nuc900_nand.c deleted file mode 100644 index 13bf7b2894d3..000000000000 --- a/drivers/mtd/nand/raw/nuc900_nand.c +++ /dev/null @@ -1,304 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright © 2009 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - */ - -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/platform_device.h> -#include <linux/delay.h> -#include <linux/clk.h> -#include <linux/err.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/rawnand.h> -#include <linux/mtd/partitions.h> - -#define REG_FMICSR 0x00 -#define REG_SMCSR 0xa0 -#define REG_SMISR 0xac -#define REG_SMCMD 0xb0 -#define REG_SMADDR 0xb4 -#define REG_SMDATA 0xb8 - -#define RESET_FMI 0x01 -#define NAND_EN 0x08 -#define READYBUSY (0x01 << 18) - -#define SWRST 0x01 -#define PSIZE (0x01 << 3) -#define DMARWEN (0x03 << 1) -#define BUSWID (0x01 << 4) -#define ECC4EN (0x01 << 5) -#define WP (0x01 << 24) -#define NANDCS (0x01 << 25) -#define ENDADDR (0x01 << 31) - -#define read_data_reg(dev) \ - __raw_readl((dev)->reg + REG_SMDATA) - -#define write_data_reg(dev, val) \ - __raw_writel((val), (dev)->reg + REG_SMDATA) - -#define write_cmd_reg(dev, val) \ - __raw_writel((val), (dev)->reg + REG_SMCMD) - -#define write_addr_reg(dev, val) \ - __raw_writel((val), (dev)->reg + REG_SMADDR) - -struct nuc900_nand { - struct nand_chip chip; - void __iomem *reg; - struct clk *clk; - spinlock_t lock; -}; - -static inline struct nuc900_nand *mtd_to_nuc900(struct mtd_info *mtd) -{ - return container_of(mtd_to_nand(mtd), struct nuc900_nand, chip); -} - -static const struct mtd_partition partitions[] = { - { - .name = "NAND FS 0", - .offset = 0, - .size = 8 * 1024 * 1024 - }, - { - .name = "NAND FS 1", - .offset = MTDPART_OFS_APPEND, - .size = MTDPART_SIZ_FULL - } -}; - -static unsigned char nuc900_nand_read_byte(struct nand_chip *chip) -{ - unsigned char ret; - struct nuc900_nand *nand = mtd_to_nuc900(nand_to_mtd(chip)); - - ret = (unsigned char)read_data_reg(nand); - - return ret; -} - -static void nuc900_nand_read_buf(struct nand_chip *chip, - unsigned char *buf, int len) -{ - int i; - struct nuc900_nand *nand = mtd_to_nuc900(nand_to_mtd(chip)); - - for (i = 0; i < len; i++) - buf[i] = (unsigned char)read_data_reg(nand); -} - -static void nuc900_nand_write_buf(struct nand_chip *chip, - const unsigned char *buf, int len) -{ - int i; - struct nuc900_nand *nand = mtd_to_nuc900(nand_to_mtd(chip)); - - for (i = 0; i < len; i++) - write_data_reg(nand, buf[i]); -} - -static int nuc900_check_rb(struct nuc900_nand *nand) -{ - unsigned int val; - spin_lock(&nand->lock); - val = __raw_readl(nand->reg + REG_SMISR); - val &= READYBUSY; - spin_unlock(&nand->lock); - - return val; -} - -static int nuc900_nand_devready(struct nand_chip *chip) -{ - struct nuc900_nand *nand = mtd_to_nuc900(nand_to_mtd(chip)); - int ready; - - ready = (nuc900_check_rb(nand)) ? 1 : 0; - return ready; -} - -static void nuc900_nand_command_lp(struct nand_chip *chip, - unsigned int command, - int column, int page_addr) -{ - struct mtd_info *mtd = nand_to_mtd(chip); - struct nuc900_nand *nand = mtd_to_nuc900(mtd); - - if (command == NAND_CMD_READOOB) { - column += mtd->writesize; - command = NAND_CMD_READ0; - } - - write_cmd_reg(nand, command & 0xff); - - if (column != -1 || page_addr != -1) { - - if (column != -1) { - if (chip->options & NAND_BUSWIDTH_16 && - !nand_opcode_8bits(command)) - column >>= 1; - write_addr_reg(nand, column); - write_addr_reg(nand, column >> 8 | ENDADDR); - } - if (page_addr != -1) { - write_addr_reg(nand, page_addr); - - if (chip->options & NAND_ROW_ADDR_3) { - write_addr_reg(nand, page_addr >> 8); - write_addr_reg(nand, page_addr >> 16 | ENDADDR); - } else { - write_addr_reg(nand, page_addr >> 8 | ENDADDR); - } - } - } - - switch (command) { - case NAND_CMD_CACHEDPROG: - case NAND_CMD_PAGEPROG: - case NAND_CMD_ERASE1: - case NAND_CMD_ERASE2: - case NAND_CMD_SEQIN: - case NAND_CMD_RNDIN: - case NAND_CMD_STATUS: - return; - - case NAND_CMD_RESET: - if (chip->legacy.dev_ready) - break; - udelay(chip->legacy.chip_delay); - - write_cmd_reg(nand, NAND_CMD_STATUS); - write_cmd_reg(nand, command); - - while (!nuc900_check_rb(nand)) - ; - - return; - - case NAND_CMD_RNDOUT: - write_cmd_reg(nand, NAND_CMD_RNDOUTSTART); - return; - - case NAND_CMD_READ0: - write_cmd_reg(nand, NAND_CMD_READSTART); - /* fall through */ - - default: - - if (!chip->legacy.dev_ready) { - udelay(chip->legacy.chip_delay); - return; - } - } - - /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ - ndelay(100); - - while (!chip->legacy.dev_ready(chip)) - ; -} - - -static void nuc900_nand_enable(struct nuc900_nand *nand) -{ - unsigned int val; - spin_lock(&nand->lock); - __raw_writel(RESET_FMI, (nand->reg + REG_FMICSR)); - - val = __raw_readl(nand->reg + REG_FMICSR); - - if (!(val & NAND_EN)) - __raw_writel(val | NAND_EN, nand->reg + REG_FMICSR); - - val = __raw_readl(nand->reg + REG_SMCSR); - - val &= ~(SWRST|PSIZE|DMARWEN|BUSWID|ECC4EN|NANDCS); - val |= WP; - - __raw_writel(val, nand->reg + REG_SMCSR); - - spin_unlock(&nand->lock); -} - -static int nuc900_nand_probe(struct platform_device *pdev) -{ - struct nuc900_nand *nuc900_nand; - struct nand_chip *chip; - struct mtd_info *mtd; - struct resource *res; - - nuc900_nand = devm_kzalloc(&pdev->dev, sizeof(struct nuc900_nand), - GFP_KERNEL); - if (!nuc900_nand) - return -ENOMEM; - chip = &(nuc900_nand->chip); - mtd = nand_to_mtd(chip); - - mtd->dev.parent = &pdev->dev; - spin_lock_init(&nuc900_nand->lock); - - nuc900_nand->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(nuc900_nand->clk)) - return -ENOENT; - clk_enable(nuc900_nand->clk); - - chip->legacy.cmdfunc = nuc900_nand_command_lp; - chip->legacy.dev_ready = nuc900_nand_devready; - chip->legacy.read_byte = nuc900_nand_read_byte; - chip->legacy.write_buf = nuc900_nand_write_buf; - chip->legacy.read_buf = nuc900_nand_read_buf; - chip->legacy.chip_delay = 50; - chip->options = 0; - chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - nuc900_nand->reg = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(nuc900_nand->reg)) - return PTR_ERR(nuc900_nand->reg); - - nuc900_nand_enable(nuc900_nand); - - if (nand_scan(chip, 1)) - return -ENXIO; - - mtd_device_register(mtd, partitions, ARRAY_SIZE(partitions)); - - platform_set_drvdata(pdev, nuc900_nand); - - return 0; -} - -static int nuc900_nand_remove(struct platform_device *pdev) -{ - struct nuc900_nand *nuc900_nand = platform_get_drvdata(pdev); - - nand_release(&nuc900_nand->chip); - clk_disable(nuc900_nand->clk); - - return 0; -} - -static struct platform_driver nuc900_nand_driver = { - .probe = nuc900_nand_probe, - .remove = nuc900_nand_remove, - .driver = { - .name = "nuc900-fmi", - }, -}; - -module_platform_driver(nuc900_nand_driver); - -MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>"); -MODULE_DESCRIPTION("w90p910/NUC9xx nand driver!"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:nuc900-fmi"); |