From d4f4c0aa8e36f69e46360b3d3569dc15d6099894 Mon Sep 17 00:00:00 2001 From: Håvard Skinnemoen Date: Fri, 6 Jun 2008 18:04:52 +0200 Subject: [MTD] [NAND] rename at91_nand -> atmel_nand: file names and Kconfig MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The AT91 NAND driver needs just a few tiny modifications to work on AVR32 as well. Rename it atmel_nand to reflect this. Also move the ECC register definitions into drivers/mtd/nand since they are only useful to the atmel_nand driver, and get rid of the useless filename at the top of each file. Signed-off-by: Håvard Skinnemoen Signed-off-by: David Woodhouse --- drivers/mtd/nand/atmel_nand.c | 590 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 590 insertions(+) create mode 100644 drivers/mtd/nand/atmel_nand.c (limited to 'drivers/mtd/nand/atmel_nand.c') diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c new file mode 100644 index 000000000000..51b703155db6 --- /dev/null +++ b/drivers/mtd/nand/atmel_nand.c @@ -0,0 +1,590 @@ +/* + * Copyright (C) 2003 Rick Bronson + * + * Derived from drivers/mtd/nand/autcpu12.c + * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) + * + * Derived from drivers/mtd/spia.c + * Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com) + * + * + * Add Hardware ECC support for AT91SAM9260 / AT91SAM9263 + * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright (C) 2007 + * + * Derived from Das U-Boot source code + * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c) + * (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +#ifdef CONFIG_MTD_NAND_ATMEL_ECC_HW +#define hard_ecc 1 +#else +#define hard_ecc 0 +#endif + +#ifdef CONFIG_MTD_NAND_ATMEL_ECC_NONE +#define no_ecc 1 +#else +#define no_ecc 0 +#endif + +/* Register access macros */ +#define ecc_readl(add, reg) \ + __raw_readl(add + AT91_ECC_##reg) +#define ecc_writel(add, reg, value) \ + __raw_writel((value), add + AT91_ECC_##reg) + +#include "atmel_nand_ecc.h" /* Hardware ECC registers */ + +/* oob layout for large page size + * bad block info is on bytes 0 and 1 + * the bytes have to be consecutives to avoid + * several NAND_CMD_RNDOUT during read + */ +static struct nand_ecclayout at91_oobinfo_large = { + .eccbytes = 4, + .eccpos = {60, 61, 62, 63}, + .oobfree = { + {2, 58} + }, +}; + +/* oob layout for small page size + * bad block info is on bytes 4 and 5 + * the bytes have to be consecutives to avoid + * several NAND_CMD_RNDOUT during read + */ +static struct nand_ecclayout at91_oobinfo_small = { + .eccbytes = 4, + .eccpos = {0, 1, 2, 3}, + .oobfree = { + {6, 10} + }, +}; + +struct at91_nand_host { + struct nand_chip nand_chip; + struct mtd_info mtd; + void __iomem *io_base; + struct at91_nand_data *board; + struct device *dev; + void __iomem *ecc; +}; + +/* + * Enable NAND. + */ +static void at91_nand_enable(struct at91_nand_host *host) +{ + if (host->board->enable_pin) + gpio_set_value(host->board->enable_pin, 0); +} + +/* + * Disable NAND. + */ +static void at91_nand_disable(struct at91_nand_host *host) +{ + if (host->board->enable_pin) + gpio_set_value(host->board->enable_pin, 1); +} + +/* + * Hardware specific access to control-lines + */ +static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *nand_chip = mtd->priv; + struct at91_nand_host *host = nand_chip->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + if (ctrl & NAND_NCE) + at91_nand_enable(host); + else + at91_nand_disable(host); + } + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + writeb(cmd, host->io_base + (1 << host->board->cle)); + else + writeb(cmd, host->io_base + (1 << host->board->ale)); +} + +/* + * Read the Device Ready pin. + */ +static int at91_nand_device_ready(struct mtd_info *mtd) +{ + struct nand_chip *nand_chip = mtd->priv; + struct at91_nand_host *host = nand_chip->priv; + + return gpio_get_value(host->board->rdy_pin); +} + +/* + * write oob for small pages + */ +static int at91_nand_write_oob_512(struct mtd_info *mtd, + struct nand_chip *chip, int page) +{ + int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad; + int eccsize = chip->ecc.size, length = mtd->oobsize; + int len, pos, status = 0; + const uint8_t *bufpoi = chip->oob_poi; + + pos = eccsize + chunk; + + chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page); + len = min_t(int, length, chunk); + chip->write_buf(mtd, bufpoi, len); + bufpoi += len; + length -= len; + if (length > 0) + chip->write_buf(mtd, bufpoi, length); + + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + status = chip->waitfunc(mtd, chip); + + return status & NAND_STATUS_FAIL ? -EIO : 0; + +} + +/* + * read oob for small pages + */ +static int at91_nand_read_oob_512(struct mtd_info *mtd, + struct nand_chip *chip, int page, int sndcmd) +{ + if (sndcmd) { + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); + sndcmd = 0; + } + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + return sndcmd; +} + +/* + * Calculate HW ECC + * + * function called after a write + * + * mtd: MTD block structure + * dat: raw data (unused) + * ecc_code: buffer for ECC + */ +static int at91_nand_calculate(struct mtd_info *mtd, + const u_char *dat, unsigned char *ecc_code) +{ + struct nand_chip *nand_chip = mtd->priv; + struct at91_nand_host *host = nand_chip->priv; + uint32_t *eccpos = nand_chip->ecc.layout->eccpos; + unsigned int ecc_value; + + /* get the first 2 ECC bytes */ + ecc_value = ecc_readl(host->ecc, PR); + + ecc_code[eccpos[0]] = ecc_value & 0xFF; + ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF; + + /* get the last 2 ECC bytes */ + ecc_value = ecc_readl(host->ecc, NPR) & AT91_ECC_NPARITY; + + ecc_code[eccpos[2]] = ecc_value & 0xFF; + ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF; + + return 0; +} + +/* + * HW ECC read page function + * + * mtd: mtd info structure + * chip: nand chip info structure + * buf: buffer to store read data + */ +static int at91_nand_read_page(struct mtd_info *mtd, + struct nand_chip *chip, uint8_t *buf) +{ + int eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + uint32_t *eccpos = chip->ecc.layout->eccpos; + uint8_t *p = buf; + uint8_t *oob = chip->oob_poi; + uint8_t *ecc_pos; + int stat; + + /* read the page */ + chip->read_buf(mtd, p, eccsize); + + /* move to ECC position if needed */ + if (eccpos[0] != 0) { + /* This only works on large pages + * because the ECC controller waits for + * NAND_CMD_RNDOUTSTART after the + * NAND_CMD_RNDOUT. + * anyway, for small pages, the eccpos[0] == 0 + */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, + mtd->writesize + eccpos[0], -1); + } + + /* the ECC controller needs to read the ECC just after the data */ + ecc_pos = oob + eccpos[0]; + chip->read_buf(mtd, ecc_pos, eccbytes); + + /* check if there's an error */ + stat = chip->ecc.correct(mtd, p, oob, NULL); + + if (stat < 0) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; + + /* get back to oob start (end of page) */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1); + + /* read the oob */ + chip->read_buf(mtd, oob, mtd->oobsize); + + return 0; +} + +/* + * HW ECC Correction + * + * function called after a read + * + * mtd: MTD block structure + * dat: raw data read from the chip + * read_ecc: ECC from the chip (unused) + * isnull: unused + * + * Detect and correct a 1 bit error for a page + */ +static int at91_nand_correct(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *isnull) +{ + struct nand_chip *nand_chip = mtd->priv; + struct at91_nand_host *host = nand_chip->priv; + unsigned int ecc_status; + unsigned int ecc_word, ecc_bit; + + /* get the status from the Status Register */ + ecc_status = ecc_readl(host->ecc, SR); + + /* if there's no error */ + if (likely(!(ecc_status & AT91_ECC_RECERR))) + return 0; + + /* get error bit offset (4 bits) */ + ecc_bit = ecc_readl(host->ecc, PR) & AT91_ECC_BITADDR; + /* get word address (12 bits) */ + ecc_word = ecc_readl(host->ecc, PR) & AT91_ECC_WORDADDR; + ecc_word >>= 4; + + /* if there are multiple errors */ + if (ecc_status & AT91_ECC_MULERR) { + /* check if it is a freshly erased block + * (filled with 0xff) */ + if ((ecc_bit == AT91_ECC_BITADDR) + && (ecc_word == (AT91_ECC_WORDADDR >> 4))) { + /* the block has just been erased, return OK */ + return 0; + } + /* it doesn't seems to be a freshly + * erased block. + * We can't correct so many errors */ + dev_dbg(host->dev, "at91_nand : multiple errors detected." + " Unable to correct.\n"); + return -EIO; + } + + /* if there's a single bit error : we can correct it */ + if (ecc_status & AT91_ECC_ECCERR) { + /* there's nothing much to do here. + * the bit error is on the ECC itself. + */ + dev_dbg(host->dev, "at91_nand : one bit error on ECC code." + " Nothing to correct\n"); + return 0; + } + + dev_dbg(host->dev, "at91_nand : one bit error on data." + " (word offset in the page :" + " 0x%x bit offset : 0x%x)\n", + ecc_word, ecc_bit); + /* correct the error */ + if (nand_chip->options & NAND_BUSWIDTH_16) { + /* 16 bits words */ + ((unsigned short *) dat)[ecc_word] ^= (1 << ecc_bit); + } else { + /* 8 bits words */ + dat[ecc_word] ^= (1 << ecc_bit); + } + dev_dbg(host->dev, "at91_nand : error corrected\n"); + return 1; +} + +/* + * Enable HW ECC : unsused + */ +static void at91_nand_hwctl(struct mtd_info *mtd, int mode) { ; } + +#ifdef CONFIG_MTD_PARTITIONS +static const char *part_probes[] = { "cmdlinepart", NULL }; +#endif + +/* + * Probe for the NAND device. + */ +static int __init at91_nand_probe(struct platform_device *pdev) +{ + struct at91_nand_host *host; + struct mtd_info *mtd; + struct nand_chip *nand_chip; + struct resource *regs; + struct resource *mem; + int res; + +#ifdef CONFIG_MTD_PARTITIONS + struct mtd_partition *partitions = NULL; + int num_partitions = 0; +#endif + + /* Allocate memory for the device structure (and zero it) */ + host = kzalloc(sizeof(struct at91_nand_host), GFP_KERNEL); + if (!host) { + printk(KERN_ERR "at91_nand: failed to allocate device structure.\n"); + return -ENOMEM; + } + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + printk(KERN_ERR "at91_nand: can't get I/O resource mem\n"); + return -ENXIO; + } + + host->io_base = ioremap(mem->start, mem->end - mem->start + 1); + if (host->io_base == NULL) { + printk(KERN_ERR "at91_nand: ioremap failed\n"); + kfree(host); + return -EIO; + } + + mtd = &host->mtd; + nand_chip = &host->nand_chip; + host->board = pdev->dev.platform_data; + host->dev = &pdev->dev; + + nand_chip->priv = host; /* link the private data structures */ + mtd->priv = nand_chip; + mtd->owner = THIS_MODULE; + + /* Set address of NAND IO lines */ + nand_chip->IO_ADDR_R = host->io_base; + nand_chip->IO_ADDR_W = host->io_base; + nand_chip->cmd_ctrl = at91_nand_cmd_ctrl; + + if (host->board->rdy_pin) + nand_chip->dev_ready = at91_nand_device_ready; + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!regs && hard_ecc) { + printk(KERN_ERR "at91_nand: can't get I/O resource " + "regs\nFalling back on software ECC\n"); + } + + nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */ + if (no_ecc) + nand_chip->ecc.mode = NAND_ECC_NONE; + if (hard_ecc && regs) { + host->ecc = ioremap(regs->start, regs->end - regs->start + 1); + if (host->ecc == NULL) { + printk(KERN_ERR "at91_nand: ioremap failed\n"); + res = -EIO; + goto err_ecc_ioremap; + } + nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME; + nand_chip->ecc.calculate = at91_nand_calculate; + nand_chip->ecc.correct = at91_nand_correct; + nand_chip->ecc.hwctl = at91_nand_hwctl; + nand_chip->ecc.read_page = at91_nand_read_page; + nand_chip->ecc.bytes = 4; + nand_chip->ecc.prepad = 0; + nand_chip->ecc.postpad = 0; + } + + nand_chip->chip_delay = 20; /* 20us command delay time */ + + if (host->board->bus_width_16) /* 16-bit bus width */ + nand_chip->options |= NAND_BUSWIDTH_16; + + platform_set_drvdata(pdev, host); + at91_nand_enable(host); + + if (host->board->det_pin) { + if (gpio_get_value(host->board->det_pin)) { + printk ("No SmartMedia card inserted.\n"); + res = ENXIO; + goto out; + } + } + + /* first scan to find the device and get the page size */ + if (nand_scan_ident(mtd, 1)) { + res = -ENXIO; + goto out; + } + + if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) { + /* ECC is calculated for the whole page (1 step) */ + nand_chip->ecc.size = mtd->writesize; + + /* set ECC page size and oob layout */ + switch (mtd->writesize) { + case 512: + nand_chip->ecc.layout = &at91_oobinfo_small; + nand_chip->ecc.read_oob = at91_nand_read_oob_512; + nand_chip->ecc.write_oob = at91_nand_write_oob_512; + ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_528); + break; + case 1024: + nand_chip->ecc.layout = &at91_oobinfo_large; + ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_1056); + break; + case 2048: + nand_chip->ecc.layout = &at91_oobinfo_large; + ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_2112); + break; + case 4096: + nand_chip->ecc.layout = &at91_oobinfo_large; + ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_4224); + break; + default: + /* page size not handled by HW ECC */ + /* switching back to soft ECC */ + nand_chip->ecc.mode = NAND_ECC_SOFT; + nand_chip->ecc.calculate = NULL; + nand_chip->ecc.correct = NULL; + nand_chip->ecc.hwctl = NULL; + nand_chip->ecc.read_page = NULL; + nand_chip->ecc.postpad = 0; + nand_chip->ecc.prepad = 0; + nand_chip->ecc.bytes = 0; + break; + } + } + + /* second phase scan */ + if (nand_scan_tail(mtd)) { + res = -ENXIO; + goto out; + } + +#ifdef CONFIG_MTD_PARTITIONS +#ifdef CONFIG_MTD_CMDLINE_PARTS + mtd->name = "at91_nand"; + num_partitions = parse_mtd_partitions(mtd, part_probes, + &partitions, 0); +#endif + if (num_partitions <= 0 && host->board->partition_info) + partitions = host->board->partition_info(mtd->size, + &num_partitions); + + if ((!partitions) || (num_partitions == 0)) { + printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n"); + res = ENXIO; + goto release; + } + + res = add_mtd_partitions(mtd, partitions, num_partitions); +#else + res = add_mtd_device(mtd); +#endif + + if (!res) + return res; + +#ifdef CONFIG_MTD_PARTITIONS +release: +#endif + nand_release(mtd); + +out: + iounmap(host->ecc); + +err_ecc_ioremap: + at91_nand_disable(host); + platform_set_drvdata(pdev, NULL); + iounmap(host->io_base); + kfree(host); + return res; +} + +/* + * Remove a NAND device. + */ +static int __devexit at91_nand_remove(struct platform_device *pdev) +{ + struct at91_nand_host *host = platform_get_drvdata(pdev); + struct mtd_info *mtd = &host->mtd; + + nand_release(mtd); + + at91_nand_disable(host); + + iounmap(host->io_base); + iounmap(host->ecc); + kfree(host); + + return 0; +} + +static struct platform_driver at91_nand_driver = { + .probe = at91_nand_probe, + .remove = at91_nand_remove, + .driver = { + .name = "at91_nand", + .owner = THIS_MODULE, + }, +}; + +static int __init at91_nand_init(void) +{ + return platform_driver_register(&at91_nand_driver); +} + + +static void __exit at91_nand_exit(void) +{ + platform_driver_unregister(&at91_nand_driver); +} + + +module_init(at91_nand_init); +module_exit(at91_nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Rick Bronson"); +MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91 / AVR32"); +MODULE_ALIAS("platform:at91_nand"); -- cgit v1.2.3 From 3c3796cc32b6e53653a5eb868dc959b8c2779db9 Mon Sep 17 00:00:00 2001 From: Håvard Skinnemoen Date: Fri, 6 Jun 2008 18:04:53 +0200 Subject: [MTD] [NAND] rename at91_nand -> atmel_nand: internal symbols MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is basically s/at91_nand/atmel_nand/g with some manual inspection. Signed-off-by: Håvard Skinnemoen Signed-off-by: David Woodhouse --- arch/arm/mach-at91/at91cap9_devices.c | 8 +- arch/arm/mach-at91/at91rm9200_devices.c | 8 +- arch/arm/mach-at91/at91sam9260_devices.c | 8 +- arch/arm/mach-at91/at91sam9261_devices.c | 12 +-- arch/arm/mach-at91/at91sam9263_devices.c | 8 +- arch/arm/mach-at91/at91sam9rl_devices.c | 12 +-- arch/arm/mach-at91/board-cam60.c | 2 +- arch/arm/mach-at91/board-cap9adk.c | 2 +- arch/arm/mach-at91/board-dk.c | 2 +- arch/arm/mach-at91/board-kb9202.c | 2 +- arch/arm/mach-at91/board-sam9-l9260.c | 2 +- arch/arm/mach-at91/board-sam9260ek.c | 2 +- arch/arm/mach-at91/board-sam9261ek.c | 2 +- arch/arm/mach-at91/board-sam9263ek.c | 2 +- arch/arm/mach-at91/board-sam9rlek.c | 2 +- arch/arm/mach-at91/board-yl-9200.c | 2 +- drivers/mtd/nand/atmel_nand.c | 152 +++++++++++++++---------------- drivers/mtd/nand/atmel_nand_ecc.h | 34 +++---- include/asm-arm/arch-at91/board.h | 4 +- 19 files changed, 133 insertions(+), 133 deletions(-) (limited to 'drivers/mtd/nand/atmel_nand.c') diff --git a/arch/arm/mach-at91/at91cap9_devices.c b/arch/arm/mach-at91/at91cap9_devices.c index be526746e01e..fe5148e9f0cc 100644 --- a/arch/arm/mach-at91/at91cap9_devices.c +++ b/arch/arm/mach-at91/at91cap9_devices.c @@ -278,7 +278,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} * -------------------------------------------------------------------- */ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) -static struct at91_nand_data nand_data; +static struct atmel_nand_data nand_data; #define NAND_BASE AT91_CHIPSELECT_3 @@ -296,7 +296,7 @@ static struct resource nand_resources[] = { }; static struct platform_device at91cap9_nand_device = { - .name = "at91_nand", + .name = "atmel_nand", .id = -1, .dev = { .platform_data = &nand_data, @@ -305,7 +305,7 @@ static struct platform_device at91cap9_nand_device = { .num_resources = ARRAY_SIZE(nand_resources), }; -void __init at91_add_device_nand(struct at91_nand_data *data) +void __init at91_add_device_nand(struct atmel_nand_data *data) { unsigned long csa, mode; @@ -346,7 +346,7 @@ void __init at91_add_device_nand(struct at91_nand_data *data) platform_device_register(&at91cap9_nand_device); } #else -void __init at91_add_device_nand(struct at91_nand_data *data) {} +void __init at91_add_device_nand(struct atmel_nand_data *data) {} #endif diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c index de19bee83f75..8ced9bc82099 100644 --- a/arch/arm/mach-at91/at91rm9200_devices.c +++ b/arch/arm/mach-at91/at91rm9200_devices.c @@ -369,7 +369,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} * -------------------------------------------------------------------- */ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) -static struct at91_nand_data nand_data; +static struct atmel_nand_data nand_data; #define NAND_BASE AT91_CHIPSELECT_3 @@ -382,7 +382,7 @@ static struct resource nand_resources[] = { }; static struct platform_device at91rm9200_nand_device = { - .name = "at91_nand", + .name = "atmel_nand", .id = -1, .dev = { .platform_data = &nand_data, @@ -391,7 +391,7 @@ static struct platform_device at91rm9200_nand_device = { .num_resources = ARRAY_SIZE(nand_resources), }; -void __init at91_add_device_nand(struct at91_nand_data *data) +void __init at91_add_device_nand(struct atmel_nand_data *data) { unsigned int csa; @@ -429,7 +429,7 @@ void __init at91_add_device_nand(struct at91_nand_data *data) platform_device_register(&at91rm9200_nand_device); } #else -void __init at91_add_device_nand(struct at91_nand_data *data) {} +void __init at91_add_device_nand(struct atmel_nand_data *data) {} #endif diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index 393a32aefce5..3aa62b1151b8 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -283,7 +283,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} * -------------------------------------------------------------------- */ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) -static struct at91_nand_data nand_data; +static struct atmel_nand_data nand_data; #define NAND_BASE AT91_CHIPSELECT_3 @@ -301,7 +301,7 @@ static struct resource nand_resources[] = { }; static struct platform_device at91sam9260_nand_device = { - .name = "at91_nand", + .name = "atmel_nand", .id = -1, .dev = { .platform_data = &nand_data, @@ -310,7 +310,7 @@ static struct platform_device at91sam9260_nand_device = { .num_resources = ARRAY_SIZE(nand_resources), }; -void __init at91_add_device_nand(struct at91_nand_data *data) +void __init at91_add_device_nand(struct atmel_nand_data *data) { unsigned long csa, mode; @@ -351,7 +351,7 @@ void __init at91_add_device_nand(struct at91_nand_data *data) platform_device_register(&at91sam9260_nand_device); } #else -void __init at91_add_device_nand(struct at91_nand_data *data) {} +void __init at91_add_device_nand(struct atmel_nand_data *data) {} #endif diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c index 728bb8f39441..6b9e423ec474 100644 --- a/arch/arm/mach-at91/at91sam9261_devices.c +++ b/arch/arm/mach-at91/at91sam9261_devices.c @@ -199,7 +199,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} * -------------------------------------------------------------------- */ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) -static struct at91_nand_data nand_data; +static struct atmel_nand_data nand_data; #define NAND_BASE AT91_CHIPSELECT_3 @@ -211,8 +211,8 @@ static struct resource nand_resources[] = { } }; -static struct platform_device at91_nand_device = { - .name = "at91_nand", +static struct platform_device atmel_nand_device = { + .name = "atmel_nand", .id = -1, .dev = { .platform_data = &nand_data, @@ -221,7 +221,7 @@ static struct platform_device at91_nand_device = { .num_resources = ARRAY_SIZE(nand_resources), }; -void __init at91_add_device_nand(struct at91_nand_data *data) +void __init at91_add_device_nand(struct atmel_nand_data *data) { unsigned long csa, mode; @@ -262,11 +262,11 @@ void __init at91_add_device_nand(struct at91_nand_data *data) at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */ nand_data = *data; - platform_device_register(&at91_nand_device); + platform_device_register(&atmel_nand_device); } #else -void __init at91_add_device_nand(struct at91_nand_data *data) {} +void __init at91_add_device_nand(struct atmel_nand_data *data) {} #endif diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c index 719667e25c98..f1dfbfe094a2 100644 --- a/arch/arm/mach-at91/at91sam9263_devices.c +++ b/arch/arm/mach-at91/at91sam9263_devices.c @@ -353,7 +353,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} * -------------------------------------------------------------------- */ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) -static struct at91_nand_data nand_data; +static struct atmel_nand_data nand_data; #define NAND_BASE AT91_CHIPSELECT_3 @@ -371,7 +371,7 @@ static struct resource nand_resources[] = { }; static struct platform_device at91sam9263_nand_device = { - .name = "at91_nand", + .name = "atmel_nand", .id = -1, .dev = { .platform_data = &nand_data, @@ -380,7 +380,7 @@ static struct platform_device at91sam9263_nand_device = { .num_resources = ARRAY_SIZE(nand_resources), }; -void __init at91_add_device_nand(struct at91_nand_data *data) +void __init at91_add_device_nand(struct atmel_nand_data *data) { unsigned long csa, mode; @@ -421,7 +421,7 @@ void __init at91_add_device_nand(struct at91_nand_data *data) platform_device_register(&at91sam9263_nand_device); } #else -void __init at91_add_device_nand(struct at91_nand_data *data) {} +void __init at91_add_device_nand(struct atmel_nand_data *data) {} #endif diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c index 054689804e77..b21f33393269 100644 --- a/arch/arm/mach-at91/at91sam9rl_devices.c +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -100,7 +100,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} * -------------------------------------------------------------------- */ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) -static struct at91_nand_data nand_data; +static struct atmel_nand_data nand_data; #define NAND_BASE AT91_CHIPSELECT_3 @@ -117,8 +117,8 @@ static struct resource nand_resources[] = { } }; -static struct platform_device at91_nand_device = { - .name = "at91_nand", +static struct platform_device atmel_nand_device = { + .name = "atmel_nand", .id = -1, .dev = { .platform_data = &nand_data, @@ -127,7 +127,7 @@ static struct platform_device at91_nand_device = { .num_resources = ARRAY_SIZE(nand_resources), }; -void __init at91_add_device_nand(struct at91_nand_data *data) +void __init at91_add_device_nand(struct atmel_nand_data *data) { unsigned long csa; @@ -164,11 +164,11 @@ void __init at91_add_device_nand(struct at91_nand_data *data) at91_set_A_periph(AT91_PIN_PB5, 0); /* NANDWE */ nand_data = *data; - platform_device_register(&at91_nand_device); + platform_device_register(&atmel_nand_device); } #else -void __init at91_add_device_nand(struct at91_nand_data *data) {} +void __init at91_add_device_nand(struct atmel_nand_data *data) {} #endif diff --git a/arch/arm/mach-at91/board-cam60.c b/arch/arm/mach-at91/board-cam60.c index b22a1a004055..af2c33aff1a8 100644 --- a/arch/arm/mach-at91/board-cam60.c +++ b/arch/arm/mach-at91/board-cam60.c @@ -142,7 +142,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return cam60_nand_partition; } -static struct at91_nand_data __initdata cam60_nand_data = { +static struct atmel_nand_data __initdata cam60_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not there diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c index e5512d1ff217..7144e1a89a2a 100644 --- a/arch/arm/mach-at91/board-cap9adk.c +++ b/arch/arm/mach-at91/board-cap9adk.c @@ -175,7 +175,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return cap9adk_nand_partitions; } -static struct at91_nand_data __initdata cap9adk_nand_data = { +static struct atmel_nand_data __initdata cap9adk_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected diff --git a/arch/arm/mach-at91/board-dk.c b/arch/arm/mach-at91/board-dk.c index c1a813c7169b..ffecacb71f89 100644 --- a/arch/arm/mach-at91/board-dk.c +++ b/arch/arm/mach-at91/board-dk.c @@ -150,7 +150,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return dk_nand_partition; } -static struct at91_nand_data __initdata dk_nand_data = { +static struct atmel_nand_data __initdata dk_nand_data = { .ale = 22, .cle = 21, .det_pin = AT91_PIN_PB1, diff --git a/arch/arm/mach-at91/board-kb9202.c b/arch/arm/mach-at91/board-kb9202.c index 4b39b9cda75b..153450f168f2 100644 --- a/arch/arm/mach-at91/board-kb9202.c +++ b/arch/arm/mach-at91/board-kb9202.c @@ -102,7 +102,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return kb9202_nand_partition; } -static struct at91_nand_data __initdata kb9202_nand_data = { +static struct atmel_nand_data __initdata kb9202_nand_data = { .ale = 22, .cle = 21, // .det_pin = ... not there diff --git a/arch/arm/mach-at91/board-sam9-l9260.c b/arch/arm/mach-at91/board-sam9-l9260.c index 8f76af5e219a..57a6221943ed 100644 --- a/arch/arm/mach-at91/board-sam9-l9260.c +++ b/arch/arm/mach-at91/board-sam9-l9260.c @@ -141,7 +141,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return ek_nand_partition; } -static struct at91_nand_data __initdata ek_nand_data = { +static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c index 4d1d9c777084..6a680795c3c8 100644 --- a/arch/arm/mach-at91/board-sam9260ek.c +++ b/arch/arm/mach-at91/board-sam9260ek.c @@ -178,7 +178,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return ek_nand_partition; } -static struct at91_nand_data __initdata ek_nand_data = { +static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c index 08382c0df221..43dfbd0d543a 100644 --- a/arch/arm/mach-at91/board-sam9261ek.c +++ b/arch/arm/mach-at91/board-sam9261ek.c @@ -183,7 +183,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return ek_nand_partition; } -static struct at91_nand_data __initdata ek_nand_data = { +static struct atmel_nand_data __initdata ek_nand_data = { .ale = 22, .cle = 21, // .det_pin = ... not connected diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c index b4cd5d0ed597..6605a0980117 100644 --- a/arch/arm/mach-at91/board-sam9263ek.c +++ b/arch/arm/mach-at91/board-sam9263ek.c @@ -187,7 +187,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return ek_nand_partition; } -static struct at91_nand_data __initdata ek_nand_data = { +static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c index ffc0597aee8d..35e69e51f376 100644 --- a/arch/arm/mach-at91/board-sam9rlek.c +++ b/arch/arm/mach-at91/board-sam9rlek.c @@ -88,7 +88,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return ek_nand_partition; } -static struct at91_nand_data __initdata ek_nand_data = { +static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected diff --git a/arch/arm/mach-at91/board-yl-9200.c b/arch/arm/mach-at91/board-yl-9200.c index b5717108991d..e642b3a8bd10 100755 --- a/arch/arm/mach-at91/board-yl-9200.c +++ b/arch/arm/mach-at91/board-yl-9200.c @@ -251,7 +251,7 @@ static struct mtd_partition * __init nand_partitions(int size, int *num_partitio return yl_9200_nand_partition; } -static struct at91_nand_data __initdata yl_9200_nand_data = { +static struct atmel_nand_data __initdata yl_9200_nand_data = { .ale= 6, .cle= 7, /*.det_pin = AT91_PIN_PCxx,*/ /*we don't have a det pin because NandFlash is fixed to board*/ diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 51b703155db6..675a82ca77f5 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -48,9 +48,9 @@ /* Register access macros */ #define ecc_readl(add, reg) \ - __raw_readl(add + AT91_ECC_##reg) + __raw_readl(add + ATMEL_ECC_##reg) #define ecc_writel(add, reg, value) \ - __raw_writel((value), add + AT91_ECC_##reg) + __raw_writel((value), add + ATMEL_ECC_##reg) #include "atmel_nand_ecc.h" /* Hardware ECC registers */ @@ -59,7 +59,7 @@ * the bytes have to be consecutives to avoid * several NAND_CMD_RNDOUT during read */ -static struct nand_ecclayout at91_oobinfo_large = { +static struct nand_ecclayout atmel_oobinfo_large = { .eccbytes = 4, .eccpos = {60, 61, 62, 63}, .oobfree = { @@ -72,7 +72,7 @@ static struct nand_ecclayout at91_oobinfo_large = { * the bytes have to be consecutives to avoid * several NAND_CMD_RNDOUT during read */ -static struct nand_ecclayout at91_oobinfo_small = { +static struct nand_ecclayout atmel_oobinfo_small = { .eccbytes = 4, .eccpos = {0, 1, 2, 3}, .oobfree = { @@ -80,11 +80,11 @@ static struct nand_ecclayout at91_oobinfo_small = { }, }; -struct at91_nand_host { +struct atmel_nand_host { struct nand_chip nand_chip; struct mtd_info mtd; void __iomem *io_base; - struct at91_nand_data *board; + struct atmel_nand_data *board; struct device *dev; void __iomem *ecc; }; @@ -92,7 +92,7 @@ struct at91_nand_host { /* * Enable NAND. */ -static void at91_nand_enable(struct at91_nand_host *host) +static void atmel_nand_enable(struct atmel_nand_host *host) { if (host->board->enable_pin) gpio_set_value(host->board->enable_pin, 0); @@ -101,7 +101,7 @@ static void at91_nand_enable(struct at91_nand_host *host) /* * Disable NAND. */ -static void at91_nand_disable(struct at91_nand_host *host) +static void atmel_nand_disable(struct atmel_nand_host *host) { if (host->board->enable_pin) gpio_set_value(host->board->enable_pin, 1); @@ -110,16 +110,16 @@ static void at91_nand_disable(struct at91_nand_host *host) /* * Hardware specific access to control-lines */ -static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) +static void atmel_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) { struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; + struct atmel_nand_host *host = nand_chip->priv; if (ctrl & NAND_CTRL_CHANGE) { if (ctrl & NAND_NCE) - at91_nand_enable(host); + atmel_nand_enable(host); else - at91_nand_disable(host); + atmel_nand_disable(host); } if (cmd == NAND_CMD_NONE) return; @@ -133,10 +133,10 @@ static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) /* * Read the Device Ready pin. */ -static int at91_nand_device_ready(struct mtd_info *mtd) +static int atmel_nand_device_ready(struct mtd_info *mtd) { struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; + struct atmel_nand_host *host = nand_chip->priv; return gpio_get_value(host->board->rdy_pin); } @@ -144,7 +144,7 @@ static int at91_nand_device_ready(struct mtd_info *mtd) /* * write oob for small pages */ -static int at91_nand_write_oob_512(struct mtd_info *mtd, +static int atmel_nand_write_oob_512(struct mtd_info *mtd, struct nand_chip *chip, int page) { int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad; @@ -172,7 +172,7 @@ static int at91_nand_write_oob_512(struct mtd_info *mtd, /* * read oob for small pages */ -static int at91_nand_read_oob_512(struct mtd_info *mtd, +static int atmel_nand_read_oob_512(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd) { if (sndcmd) { @@ -192,11 +192,11 @@ static int at91_nand_read_oob_512(struct mtd_info *mtd, * dat: raw data (unused) * ecc_code: buffer for ECC */ -static int at91_nand_calculate(struct mtd_info *mtd, +static int atmel_nand_calculate(struct mtd_info *mtd, const u_char *dat, unsigned char *ecc_code) { struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; + struct atmel_nand_host *host = nand_chip->priv; uint32_t *eccpos = nand_chip->ecc.layout->eccpos; unsigned int ecc_value; @@ -207,7 +207,7 @@ static int at91_nand_calculate(struct mtd_info *mtd, ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF; /* get the last 2 ECC bytes */ - ecc_value = ecc_readl(host->ecc, NPR) & AT91_ECC_NPARITY; + ecc_value = ecc_readl(host->ecc, NPR) & ATMEL_ECC_NPARITY; ecc_code[eccpos[2]] = ecc_value & 0xFF; ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF; @@ -222,7 +222,7 @@ static int at91_nand_calculate(struct mtd_info *mtd, * chip: nand chip info structure * buf: buffer to store read data */ -static int at91_nand_read_page(struct mtd_info *mtd, +static int atmel_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf) { int eccsize = chip->ecc.size; @@ -281,11 +281,11 @@ static int at91_nand_read_page(struct mtd_info *mtd, * * Detect and correct a 1 bit error for a page */ -static int at91_nand_correct(struct mtd_info *mtd, u_char *dat, +static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *isnull) { struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; + struct atmel_nand_host *host = nand_chip->priv; unsigned int ecc_status; unsigned int ecc_word, ecc_bit; @@ -293,43 +293,43 @@ static int at91_nand_correct(struct mtd_info *mtd, u_char *dat, ecc_status = ecc_readl(host->ecc, SR); /* if there's no error */ - if (likely(!(ecc_status & AT91_ECC_RECERR))) + if (likely(!(ecc_status & ATMEL_ECC_RECERR))) return 0; /* get error bit offset (4 bits) */ - ecc_bit = ecc_readl(host->ecc, PR) & AT91_ECC_BITADDR; + ecc_bit = ecc_readl(host->ecc, PR) & ATMEL_ECC_BITADDR; /* get word address (12 bits) */ - ecc_word = ecc_readl(host->ecc, PR) & AT91_ECC_WORDADDR; + ecc_word = ecc_readl(host->ecc, PR) & ATMEL_ECC_WORDADDR; ecc_word >>= 4; /* if there are multiple errors */ - if (ecc_status & AT91_ECC_MULERR) { + if (ecc_status & ATMEL_ECC_MULERR) { /* check if it is a freshly erased block * (filled with 0xff) */ - if ((ecc_bit == AT91_ECC_BITADDR) - && (ecc_word == (AT91_ECC_WORDADDR >> 4))) { + if ((ecc_bit == ATMEL_ECC_BITADDR) + && (ecc_word == (ATMEL_ECC_WORDADDR >> 4))) { /* the block has just been erased, return OK */ return 0; } /* it doesn't seems to be a freshly * erased block. * We can't correct so many errors */ - dev_dbg(host->dev, "at91_nand : multiple errors detected." + dev_dbg(host->dev, "atmel_nand : multiple errors detected." " Unable to correct.\n"); return -EIO; } /* if there's a single bit error : we can correct it */ - if (ecc_status & AT91_ECC_ECCERR) { + if (ecc_status & ATMEL_ECC_ECCERR) { /* there's nothing much to do here. * the bit error is on the ECC itself. */ - dev_dbg(host->dev, "at91_nand : one bit error on ECC code." + dev_dbg(host->dev, "atmel_nand : one bit error on ECC code." " Nothing to correct\n"); return 0; } - dev_dbg(host->dev, "at91_nand : one bit error on data." + dev_dbg(host->dev, "atmel_nand : one bit error on data." " (word offset in the page :" " 0x%x bit offset : 0x%x)\n", ecc_word, ecc_bit); @@ -341,14 +341,14 @@ static int at91_nand_correct(struct mtd_info *mtd, u_char *dat, /* 8 bits words */ dat[ecc_word] ^= (1 << ecc_bit); } - dev_dbg(host->dev, "at91_nand : error corrected\n"); + dev_dbg(host->dev, "atmel_nand : error corrected\n"); return 1; } /* * Enable HW ECC : unsused */ -static void at91_nand_hwctl(struct mtd_info *mtd, int mode) { ; } +static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) { ; } #ifdef CONFIG_MTD_PARTITIONS static const char *part_probes[] = { "cmdlinepart", NULL }; @@ -357,9 +357,9 @@ static const char *part_probes[] = { "cmdlinepart", NULL }; /* * Probe for the NAND device. */ -static int __init at91_nand_probe(struct platform_device *pdev) +static int __init atmel_nand_probe(struct platform_device *pdev) { - struct at91_nand_host *host; + struct atmel_nand_host *host; struct mtd_info *mtd; struct nand_chip *nand_chip; struct resource *regs; @@ -372,21 +372,21 @@ static int __init at91_nand_probe(struct platform_device *pdev) #endif /* Allocate memory for the device structure (and zero it) */ - host = kzalloc(sizeof(struct at91_nand_host), GFP_KERNEL); + host = kzalloc(sizeof(struct atmel_nand_host), GFP_KERNEL); if (!host) { - printk(KERN_ERR "at91_nand: failed to allocate device structure.\n"); + printk(KERN_ERR "atmel_nand: failed to allocate device structure.\n"); return -ENOMEM; } mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) { - printk(KERN_ERR "at91_nand: can't get I/O resource mem\n"); + printk(KERN_ERR "atmel_nand: can't get I/O resource mem\n"); return -ENXIO; } host->io_base = ioremap(mem->start, mem->end - mem->start + 1); if (host->io_base == NULL) { - printk(KERN_ERR "at91_nand: ioremap failed\n"); + printk(KERN_ERR "atmel_nand: ioremap failed\n"); kfree(host); return -EIO; } @@ -403,14 +403,14 @@ static int __init at91_nand_probe(struct platform_device *pdev) /* Set address of NAND IO lines */ nand_chip->IO_ADDR_R = host->io_base; nand_chip->IO_ADDR_W = host->io_base; - nand_chip->cmd_ctrl = at91_nand_cmd_ctrl; + nand_chip->cmd_ctrl = atmel_nand_cmd_ctrl; if (host->board->rdy_pin) - nand_chip->dev_ready = at91_nand_device_ready; + nand_chip->dev_ready = atmel_nand_device_ready; regs = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (!regs && hard_ecc) { - printk(KERN_ERR "at91_nand: can't get I/O resource " + printk(KERN_ERR "atmel_nand: can't get I/O resource " "regs\nFalling back on software ECC\n"); } @@ -420,15 +420,15 @@ static int __init at91_nand_probe(struct platform_device *pdev) if (hard_ecc && regs) { host->ecc = ioremap(regs->start, regs->end - regs->start + 1); if (host->ecc == NULL) { - printk(KERN_ERR "at91_nand: ioremap failed\n"); + printk(KERN_ERR "atmel_nand: ioremap failed\n"); res = -EIO; goto err_ecc_ioremap; } nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME; - nand_chip->ecc.calculate = at91_nand_calculate; - nand_chip->ecc.correct = at91_nand_correct; - nand_chip->ecc.hwctl = at91_nand_hwctl; - nand_chip->ecc.read_page = at91_nand_read_page; + nand_chip->ecc.calculate = atmel_nand_calculate; + nand_chip->ecc.correct = atmel_nand_correct; + nand_chip->ecc.hwctl = atmel_nand_hwctl; + nand_chip->ecc.read_page = atmel_nand_read_page; nand_chip->ecc.bytes = 4; nand_chip->ecc.prepad = 0; nand_chip->ecc.postpad = 0; @@ -440,7 +440,7 @@ static int __init at91_nand_probe(struct platform_device *pdev) nand_chip->options |= NAND_BUSWIDTH_16; platform_set_drvdata(pdev, host); - at91_nand_enable(host); + atmel_nand_enable(host); if (host->board->det_pin) { if (gpio_get_value(host->board->det_pin)) { @@ -463,22 +463,22 @@ static int __init at91_nand_probe(struct platform_device *pdev) /* set ECC page size and oob layout */ switch (mtd->writesize) { case 512: - nand_chip->ecc.layout = &at91_oobinfo_small; - nand_chip->ecc.read_oob = at91_nand_read_oob_512; - nand_chip->ecc.write_oob = at91_nand_write_oob_512; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_528); + nand_chip->ecc.layout = &atmel_oobinfo_small; + nand_chip->ecc.read_oob = atmel_nand_read_oob_512; + nand_chip->ecc.write_oob = atmel_nand_write_oob_512; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_528); break; case 1024: - nand_chip->ecc.layout = &at91_oobinfo_large; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_1056); + nand_chip->ecc.layout = &atmel_oobinfo_large; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_1056); break; case 2048: - nand_chip->ecc.layout = &at91_oobinfo_large; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_2112); + nand_chip->ecc.layout = &atmel_oobinfo_large; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_2112); break; case 4096: - nand_chip->ecc.layout = &at91_oobinfo_large; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_4224); + nand_chip->ecc.layout = &atmel_oobinfo_large; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_4224); break; default: /* page size not handled by HW ECC */ @@ -503,7 +503,7 @@ static int __init at91_nand_probe(struct platform_device *pdev) #ifdef CONFIG_MTD_PARTITIONS #ifdef CONFIG_MTD_CMDLINE_PARTS - mtd->name = "at91_nand"; + mtd->name = "atmel_nand"; num_partitions = parse_mtd_partitions(mtd, part_probes, &partitions, 0); #endif @@ -512,7 +512,7 @@ static int __init at91_nand_probe(struct platform_device *pdev) &num_partitions); if ((!partitions) || (num_partitions == 0)) { - printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n"); + printk(KERN_ERR "atmel_nand: No parititions defined, or unsupported device.\n"); res = ENXIO; goto release; } @@ -534,7 +534,7 @@ out: iounmap(host->ecc); err_ecc_ioremap: - at91_nand_disable(host); + atmel_nand_disable(host); platform_set_drvdata(pdev, NULL); iounmap(host->io_base); kfree(host); @@ -544,14 +544,14 @@ err_ecc_ioremap: /* * Remove a NAND device. */ -static int __devexit at91_nand_remove(struct platform_device *pdev) +static int __devexit atmel_nand_remove(struct platform_device *pdev) { - struct at91_nand_host *host = platform_get_drvdata(pdev); + struct atmel_nand_host *host = platform_get_drvdata(pdev); struct mtd_info *mtd = &host->mtd; nand_release(mtd); - at91_nand_disable(host); + atmel_nand_disable(host); iounmap(host->io_base); iounmap(host->ecc); @@ -560,31 +560,31 @@ static int __devexit at91_nand_remove(struct platform_device *pdev) return 0; } -static struct platform_driver at91_nand_driver = { - .probe = at91_nand_probe, - .remove = at91_nand_remove, +static struct platform_driver atmel_nand_driver = { + .probe = atmel_nand_probe, + .remove = atmel_nand_remove, .driver = { - .name = "at91_nand", + .name = "atmel_nand", .owner = THIS_MODULE, }, }; -static int __init at91_nand_init(void) +static int __init atmel_nand_init(void) { - return platform_driver_register(&at91_nand_driver); + return platform_driver_register(&atmel_nand_driver); } -static void __exit at91_nand_exit(void) +static void __exit atmel_nand_exit(void) { - platform_driver_unregister(&at91_nand_driver); + platform_driver_unregister(&atmel_nand_driver); } -module_init(at91_nand_init); -module_exit(at91_nand_exit); +module_init(atmel_nand_init); +module_exit(atmel_nand_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Rick Bronson"); MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91 / AVR32"); -MODULE_ALIAS("platform:at91_nand"); +MODULE_ALIAS("platform:atmel_nand"); diff --git a/drivers/mtd/nand/atmel_nand_ecc.h b/drivers/mtd/nand/atmel_nand_ecc.h index 170db869aacf..1ee7f993db1c 100644 --- a/drivers/mtd/nand/atmel_nand_ecc.h +++ b/drivers/mtd/nand/atmel_nand_ecc.h @@ -11,26 +11,26 @@ #ifndef ATMEL_NAND_ECC_H #define ATMEL_NAND_ECC_H -#define AT91_ECC_CR 0x00 /* Control register */ -#define AT91_ECC_RST (1 << 0) /* Reset parity */ +#define ATMEL_ECC_CR 0x00 /* Control register */ +#define ATMEL_ECC_RST (1 << 0) /* Reset parity */ -#define AT91_ECC_MR 0x04 /* Mode register */ -#define AT91_ECC_PAGESIZE (3 << 0) /* Page Size */ -#define AT91_ECC_PAGESIZE_528 (0) -#define AT91_ECC_PAGESIZE_1056 (1) -#define AT91_ECC_PAGESIZE_2112 (2) -#define AT91_ECC_PAGESIZE_4224 (3) +#define ATMEL_ECC_MR 0x04 /* Mode register */ +#define ATMEL_ECC_PAGESIZE (3 << 0) /* Page Size */ +#define ATMEL_ECC_PAGESIZE_528 (0) +#define ATMEL_ECC_PAGESIZE_1056 (1) +#define ATMEL_ECC_PAGESIZE_2112 (2) +#define ATMEL_ECC_PAGESIZE_4224 (3) -#define AT91_ECC_SR 0x08 /* Status register */ -#define AT91_ECC_RECERR (1 << 0) /* Recoverable Error */ -#define AT91_ECC_ECCERR (1 << 1) /* ECC Single Bit Error */ -#define AT91_ECC_MULERR (1 << 2) /* Multiple Errors */ +#define ATMEL_ECC_SR 0x08 /* Status register */ +#define ATMEL_ECC_RECERR (1 << 0) /* Recoverable Error */ +#define ATMEL_ECC_ECCERR (1 << 1) /* ECC Single Bit Error */ +#define ATMEL_ECC_MULERR (1 << 2) /* Multiple Errors */ -#define AT91_ECC_PR 0x0c /* Parity register */ -#define AT91_ECC_BITADDR (0xf << 0) /* Bit Error Address */ -#define AT91_ECC_WORDADDR (0xfff << 4) /* Word Error Address */ +#define ATMEL_ECC_PR 0x0c /* Parity register */ +#define ATMEL_ECC_BITADDR (0xf << 0) /* Bit Error Address */ +#define ATMEL_ECC_WORDADDR (0xfff << 4) /* Word Error Address */ -#define AT91_ECC_NPR 0x10 /* NParity register */ -#define AT91_ECC_NPARITY (0xffff << 0) /* NParity */ +#define ATMEL_ECC_NPR 0x10 /* NParity register */ +#define ATMEL_ECC_NPARITY (0xffff << 0) /* NParity */ #endif diff --git a/include/asm-arm/arch-at91/board.h b/include/asm-arm/arch-at91/board.h index dc189f01c5b3..6296922a6843 100644 --- a/include/asm-arm/arch-at91/board.h +++ b/include/asm-arm/arch-at91/board.h @@ -85,7 +85,7 @@ struct at91_usbh_data { extern void __init at91_add_device_usbh(struct at91_usbh_data *data); /* NAND / SmartMedia */ -struct at91_nand_data { +struct atmel_nand_data { u8 enable_pin; /* chip enable */ u8 det_pin; /* card detect */ u8 rdy_pin; /* ready/busy */ @@ -94,7 +94,7 @@ struct at91_nand_data { u8 bus_width_16; /* buswidth is 16 bit */ struct mtd_partition* (*partition_info)(int, int*); }; -extern void __init at91_add_device_nand(struct at91_nand_data *data); +extern void __init at91_add_device_nand(struct atmel_nand_data *data); /* I2C*/ extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices); -- cgit v1.2.3 From cc0c72e173db70a3a864994b05ebbe59b79b888f Mon Sep 17 00:00:00 2001 From: Håvard Skinnemoen Date: Fri, 6 Jun 2008 18:04:54 +0200 Subject: [MTD] [NAND] atmel_nand: Clean up and fix probe() error path MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This fixes several bugs in the atmel_nand_probe() error path, including at least one memory leak. Signed-off-by: Håvard Skinnemoen Signed-off-by: David Woodhouse --- drivers/mtd/nand/atmel_nand.c | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) (limited to 'drivers/mtd/nand/atmel_nand.c') diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 675a82ca77f5..325ce29f53fc 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -371,6 +371,12 @@ static int __init atmel_nand_probe(struct platform_device *pdev) int num_partitions = 0; #endif + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + printk(KERN_ERR "atmel_nand: can't get I/O resource mem\n"); + return -ENXIO; + } + /* Allocate memory for the device structure (and zero it) */ host = kzalloc(sizeof(struct atmel_nand_host), GFP_KERNEL); if (!host) { @@ -378,17 +384,11 @@ static int __init atmel_nand_probe(struct platform_device *pdev) return -ENOMEM; } - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!mem) { - printk(KERN_ERR "atmel_nand: can't get I/O resource mem\n"); - return -ENXIO; - } - host->io_base = ioremap(mem->start, mem->end - mem->start + 1); if (host->io_base == NULL) { printk(KERN_ERR "atmel_nand: ioremap failed\n"); - kfree(host); - return -EIO; + res = -EIO; + goto err_nand_ioremap; } mtd = &host->mtd; @@ -446,14 +446,14 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (gpio_get_value(host->board->det_pin)) { printk ("No SmartMedia card inserted.\n"); res = ENXIO; - goto out; + goto err_no_card; } } /* first scan to find the device and get the page size */ if (nand_scan_ident(mtd, 1)) { res = -ENXIO; - goto out; + goto err_scan_ident; } if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) { @@ -498,7 +498,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) /* second phase scan */ if (nand_scan_tail(mtd)) { res = -ENXIO; - goto out; + goto err_scan_tail; } #ifdef CONFIG_MTD_PARTITIONS @@ -514,7 +514,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if ((!partitions) || (num_partitions == 0)) { printk(KERN_ERR "atmel_nand: No parititions defined, or unsupported device.\n"); res = ENXIO; - goto release; + goto err_no_partitions; } res = add_mtd_partitions(mtd, partitions, num_partitions); @@ -526,17 +526,19 @@ static int __init atmel_nand_probe(struct platform_device *pdev) return res; #ifdef CONFIG_MTD_PARTITIONS -release: +err_no_partitions: #endif nand_release(mtd); - -out: - iounmap(host->ecc); - -err_ecc_ioremap: +err_scan_tail: +err_scan_ident: +err_no_card: atmel_nand_disable(host); platform_set_drvdata(pdev, NULL); + if (host->ecc) + iounmap(host->ecc); +err_ecc_ioremap: iounmap(host->io_base); +err_nand_ioremap: kfree(host); return res; } @@ -553,8 +555,9 @@ static int __devexit atmel_nand_remove(struct platform_device *pdev) atmel_nand_disable(host); + if (host->ecc) + iounmap(host->ecc); iounmap(host->io_base); - iounmap(host->ecc); kfree(host); return 0; -- cgit v1.2.3 From 90574d0a4d4b73308ae54a2a57a4f3f1fa98e984 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 7 Jun 2008 08:49:00 +0100 Subject: [MTD] [NAND] Fix checkpatch warnings which showed up when atmel_nand.c moved Some of them, at least. Signed-off-by: David Woodhouse --- drivers/mtd/nand/atmel_nand.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/nand/atmel_nand.c') diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 325ce29f53fc..50700ab5a57a 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -29,8 +29,8 @@ #include #include -#include -#include +#include +#include #include @@ -444,7 +444,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (host->board->det_pin) { if (gpio_get_value(host->board->det_pin)) { - printk ("No SmartMedia card inserted.\n"); + printk("No SmartMedia card inserted.\n"); res = ENXIO; goto err_no_card; } -- cgit v1.2.3 From 23a346ca4a5a6f50f81062456af955155f68e313 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Thu, 3 Jul 2008 23:40:16 -0700 Subject: [MTD] [NAND] atmel_nand speedup via {read,write}s{b,w}() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This uses __raw_{read,write}s{b,w}() primitives to access data on NAND chips for more efficient I/O. On an arm926 with memory clocked at 100 MHz, this reduced the elapsed time for a 64 MiB read by 16%. ("dd" /dev/mtd0 to /dev/null, with an 8-bit NAND using hardware ECC and 128KiB blocksize.) Also some minor section tweaks: - Use platform_driver_probe() so no pointer to probe() lingers after that code has been removed at run-time. - Use __exit and __exit_p so the remove() code will normally be removed by the linker. Since these buffer read/write calls are new, this increases the runtime code footprint (by 88 bytes on my build, after the section tweaks). [haavard.skinnemoen@atmel.com: rebase onto atmel_nand rename] Signed-off-by: David Brownell Signed-off-by: Håvard Skinnemoen Acked-by: Andrew Victor Signed-off-by: Andrew Morton Signed-off-by: David Woodhouse --- drivers/mtd/nand/atmel_nand.c | 46 ++++++++++++++++++++++++++++++++++++++----- 1 file changed, 41 insertions(+), 5 deletions(-) (limited to 'drivers/mtd/nand/atmel_nand.c') diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 50700ab5a57a..4814fc9b237b 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -141,6 +141,37 @@ static int atmel_nand_device_ready(struct mtd_info *mtd) return gpio_get_value(host->board->rdy_pin); } +/* + * Minimal-overhead PIO for data access. + */ +static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_readsb(nand_chip->IO_ADDR_R, buf, len); +} + +static void atmel_read_buf16(struct mtd_info *mtd, u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_readsw(nand_chip->IO_ADDR_R, buf, len / 2); +} + +static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_writesb(nand_chip->IO_ADDR_W, buf, len); +} + +static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_writesw(nand_chip->IO_ADDR_W, buf, len / 2); +} + /* * write oob for small pages */ @@ -436,8 +467,14 @@ static int __init atmel_nand_probe(struct platform_device *pdev) nand_chip->chip_delay = 20; /* 20us command delay time */ - if (host->board->bus_width_16) /* 16-bit bus width */ + if (host->board->bus_width_16) { /* 16-bit bus width */ nand_chip->options |= NAND_BUSWIDTH_16; + nand_chip->read_buf = atmel_read_buf16; + nand_chip->write_buf = atmel_write_buf16; + } else { + nand_chip->read_buf = atmel_read_buf; + nand_chip->write_buf = atmel_write_buf; + } platform_set_drvdata(pdev, host); atmel_nand_enable(host); @@ -546,7 +583,7 @@ err_nand_ioremap: /* * Remove a NAND device. */ -static int __devexit atmel_nand_remove(struct platform_device *pdev) +static int __exit atmel_nand_remove(struct platform_device *pdev) { struct atmel_nand_host *host = platform_get_drvdata(pdev); struct mtd_info *mtd = &host->mtd; @@ -564,8 +601,7 @@ static int __devexit atmel_nand_remove(struct platform_device *pdev) } static struct platform_driver atmel_nand_driver = { - .probe = atmel_nand_probe, - .remove = atmel_nand_remove, + .remove = __exit_p(atmel_nand_remove), .driver = { .name = "atmel_nand", .owner = THIS_MODULE, @@ -574,7 +610,7 @@ static struct platform_driver atmel_nand_driver = { static int __init atmel_nand_init(void) { - return platform_driver_register(&atmel_nand_driver); + return platform_driver_probe(&atmel_nand_driver, atmel_nand_probe); } -- cgit v1.2.3 From d6248fddf717041f25781050e6392cc76525272d Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Thu, 3 Jul 2008 23:40:18 -0700 Subject: [MTD] [NAND] atmel_nand: Work around AT32AP7000 ECC erratum MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The ALE signal isn't correctly wired up to the ECC controller on the AP7000, so it starts calculating ECC during the address cycles. Work around this by resetting the ECC controller between the address and data cycles. Signed-off-by: Håvard Skinnemoen Acked-by: Andrew Victor Signed-off-by: Andrew Morton Signed-off-by: David Woodhouse --- drivers/mtd/nand/atmel_nand.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand/atmel_nand.c') diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 4814fc9b237b..99aec46e2145 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -33,6 +33,7 @@ #include #include +#include #ifdef CONFIG_MTD_NAND_ATMEL_ECC_HW #define hard_ecc 1 @@ -264,6 +265,19 @@ static int atmel_nand_read_page(struct mtd_info *mtd, uint8_t *ecc_pos; int stat; + /* + * Errata: ALE is incorrectly wired up to the ECC controller + * on the AP7000, so it will include the address cycles in the + * ECC calculation. + * + * Workaround: Reset the parity registers before reading the + * actual data. + */ + if (cpu_is_at32ap7000()) { + struct atmel_nand_host *host = chip->priv; + ecc_writel(host->ecc, CR, ATMEL_ECC_RST); + } + /* read the page */ chip->read_buf(mtd, p, eccsize); @@ -377,9 +391,16 @@ static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, } /* - * Enable HW ECC : unsused + * Enable HW ECC : unused on most chips */ -static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) { ; } +static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) +{ + if (cpu_is_at32ap7000()) { + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + ecc_writel(host->ecc, CR, ATMEL_ECC_RST); + } +} #ifdef CONFIG_MTD_PARTITIONS static const char *part_probes[] = { "cmdlinepart", NULL }; -- cgit v1.2.3