aboutsummaryrefslogtreecommitdiffstats
path: root/meta/packages/linux/linux-cmx270-2.6.17/mtd_fixes-r0.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta/packages/linux/linux-cmx270-2.6.17/mtd_fixes-r0.patch')
-rw-r--r--meta/packages/linux/linux-cmx270-2.6.17/mtd_fixes-r0.patch599
1 files changed, 0 insertions, 599 deletions
diff --git a/meta/packages/linux/linux-cmx270-2.6.17/mtd_fixes-r0.patch b/meta/packages/linux/linux-cmx270-2.6.17/mtd_fixes-r0.patch
deleted file mode 100644
index d77e9d8fbd..0000000000
--- a/meta/packages/linux/linux-cmx270-2.6.17/mtd_fixes-r0.patch
+++ /dev/null
@@ -1,599 +0,0 @@
-Index: linux-2.6.17/drivers/mtd/nand/cm-x270.c
-===================================================================
---- linux-2.6.17.orig/drivers/mtd/nand/cm-x270.c 2006-07-18 15:40:10.000000000 +0100
-+++ linux-2.6.17/drivers/mtd/nand/cm-x270.c 2006-07-19 15:35:18.000000000 +0100
-@@ -1,7 +1,13 @@
- /*
-- * drivers/mtd/nand/cm-x270.c
-+ * linux/drivers/mtd/nand/cmx270-nand.c
-+ *
-+ * Copyright (C) 2006 Compulab, Ltd.
-+ * Mike Rapoport <mike@compulab.co.il>
-+ *
-+ * Derived from drivers/mtd/nand/h1910.c
-+ * Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
-+ * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
- *
-- * Copyright (c) 2006, 8D Technologies inc.
- *
- * 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
-@@ -9,397 +15,269 @@
- *
- * Overview:
- * This is a device driver for the NAND flash device found on the
-- * cm-x270 compulab SBC.
-- *
-- * Changelog:
-- * - April 2006, Raphael Assenat <raph@8d.com>:
-- * Creation of the driver.
-+ * CM-X270 board.
- */
-
--#include <linux/delay.h>
-+#include <linux/slab.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/nand.h>
- #include <linux/mtd/partitions.h>
--#include <asm/hardware.h>
-+
- #include <asm/io.h>
-+#include <asm/irq.h>
-+
-+#include <asm/arch/hardware.h>
- #include <asm/arch/pxa-regs.h>
--#include <asm/arch/cm-x270.h>
-
-+#define GPIO_NAND_CS (11)
-+#define GPIO_NAND_RB (89)
-
--static struct mtd_info *cmx270_mtd = NULL;
--static void *cmx270_nand_io_base;
--#define OFFSET_BASE 0
--#define OFFSET_CLE 4
--#define OFFSET_ALE 8
--
--#define DEFAULT_NUM_PARTITIONS 1
--static int nr_partitions;
--static struct mtd_partition cmx270_default_partition_info[] = {
-- {
-- .name = "rootfs",
-- .offset = 0,
-- .size = MTDPART_SIZ_FULL,
-- },
--};
-+/* This macro needed to ensure in-order operation of GPIO and local
-+ * bus. Without both asm command and dummy uncached read there're
-+ * states when NAND access is broken. I've looked for such macro(s) in
-+ * include/asm-arm but found nothing approptiate.
-+ * dmac_clean_range is close, but is makes cache invalidation
-+ * unnecessary here and it cannot be used in module
-+ */
-+#define DRAIN_WB() \
-+ do { \
-+ unsigned char dummy; \
-+ asm volatile ("mcr p15, 0, r0, c7, c10, 4":::"r0"); \
-+ dummy=*((unsigned char*)UNCACHED_ADDR); \
-+ } while(0)
-
--static void cmx270_nand_hwcontrol(struct mtd_info *mtd, int cmd)
--{
-- udelay(1);
-- switch(cmd)
-+/* MTD structure for CM-X270 board */
-+static struct mtd_info *cmx270_nand_mtd;
-+
-+/* remaped IO address of the device */
-+static void __iomem *cmx270_nand_io;
-+
-+/*
-+ * Define static partitions for flash device
-+ */
-+static struct mtd_partition partition_info[] = {
- {
-- case NAND_CTL_SETNCE:
-- GPCR(CM_X270_GPIO_NAND_CS) = GPIO_bit(CM_X270_GPIO_NAND_CS);
-- break;
-- case NAND_CTL_CLRNCE:
-- GPSR(CM_X270_GPIO_NAND_CS) = GPIO_bit(CM_X270_GPIO_NAND_CS);
-- break;
-+ .name = "cmx270-0",
-+ .offset = 0,
-+ .size = MTDPART_SIZ_FULL
- }
-- udelay(1);
--}
--
--static int cmx270_nand_device_ready(struct mtd_info *mtd)
--{
-- /* I was getting ecc errors on reads, but adding this delay
-- made the problem disappear. There is probably a timing
-- issue somewhere. */
-- //ndelay (500);
-- udelay (25);
-+};
-+#define NUM_PARTITIONS (ARRAY_SIZE(partition_info))
-
-- return GPLR(CM_X270_GPIO_NAND_RB) & GPIO_bit(CM_X270_GPIO_NAND_RB);
--}
-+const char *part_probes[] = { "cmdlinepart", NULL };
-
--static u_char cmx270_nand_read_byte(struct mtd_info *mtd)
-+static u_char cmx270_read_byte(struct mtd_info *mtd)
- {
- struct nand_chip *this = mtd->priv;
--// unsigned long raw = readl(this->IO_ADDR_R);
-- unsigned char res = ( readl(this->IO_ADDR_R) >> 16 ) & 0xff;
-- return res;
--}
-
--static void cmx270_nand_write_byte(struct mtd_info *mtd, u_char byte)
--{
-- struct nand_chip *this = mtd->priv;
-- writel( (byte<<16), this->IO_ADDR_W );
-- udelay(1);
-+ return (readl(this->IO_ADDR_R) >> 16);
- }
-
--static void cmx270_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
-+static void cmx270_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
- {
- int i;
- struct nand_chip *this = mtd->priv;
-
- for (i=0; i<len; i++)
-- writel((buf[i]<<16), this->IO_ADDR_W);
-- udelay(1);
-+ writel((*buf++ << 16), this->IO_ADDR_W);
- }
-
--static void cmx270_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
-+static void cmx270_read_buf(struct mtd_info *mtd, u_char *buf, int len)
- {
- int i;
- struct nand_chip *this = mtd->priv;
-
- for (i=0; i<len; i++)
-- buf[i] = (readl(this->IO_ADDR_R) >> 16 ) & 0xff;
-- udelay(1);
-+ *buf++ = readl(this->IO_ADDR_R) >> 16;
- }
-
--static int cmx270_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
-+static int cmx270_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
- {
- int i;
- struct nand_chip *this = mtd->priv;
-
- for (i=0; i<len; i++)
-- if (buf[i] != ((readl(this->IO_ADDR_R) >> 16) & 0xff))
-+ if (buf[i] != (u_char)(readl(this->IO_ADDR_R) >> 16))
- return -EFAULT;
-- udelay(1);
-
- return 0;
- }
-
--static void cmx270_nand_write_ALE(struct mtd_info *mtd, const u_char byte)
-+static inline void nand_cs_on(void)
- {
-- struct nand_chip *this = mtd->priv;
-- writel( byte << 16 , this->IO_ADDR_W + OFFSET_ALE);
-- udelay(1);
-+ GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
- }
-
--static void cmx270_nand_write_CLE(struct mtd_info *mtd, const u_char byte)
-+static void nand_cs_off(void)
- {
-- struct nand_chip *this = mtd->priv;
-- writel( byte << 16 , this->IO_ADDR_W + OFFSET_CLE);
-- udelay(1);
-+ DRAIN_WB();
-+
-+ GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
- }
-
--/* Same as nand_core:nand_command() but with different memory
-- * addresses for writing to ALE and CLE and without 16 bit support.
-+/*
-+ * hardware specific access to control-lines
- */
--static void cmx270_nand_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
-+static void cmx270_hwcontrol(struct mtd_info *mtd, int cmd)
- {
-- register struct nand_chip *this = mtd->priv;
-+ struct nand_chip* this = (struct nand_chip *) (mtd->priv);
-+ unsigned int nandaddr = (unsigned int)this->IO_ADDR_R;
-
--// printk("cmd: 0x%02x col: 0x%x page_addr: 0x%x\n",
--// command, column, page_addr);
--
-- if (command == NAND_CMD_SEQIN) {
-- int readcmd;
--
-- if (column >= mtd->oobblock) {
-- /* OOB area */
-- column -= mtd->oobblock;
-- readcmd = NAND_CMD_READOOB;
-- } else if (column < 256) {
-- /* First 256 bytes --> READ0 */
-- readcmd = NAND_CMD_READ0;
-- } else {
-- column -= 256;
-- readcmd = NAND_CMD_READ1;
-- }
-- cmx270_nand_write_CLE(mtd, readcmd);
-- }
-- cmx270_nand_write_CLE(mtd, command);
-+ DRAIN_WB();
-
-- if (column != -1 || page_addr != -1) {
--
-- /* Serially input address */
-- if (column != -1) {
-- cmx270_nand_write_ALE(mtd, column);
-- }
-- if (page_addr != -1) {
-- cmx270_nand_write_ALE(mtd, (unsigned char) (page_addr & 0xff));
-- cmx270_nand_write_ALE(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
-- /* One more address cycle for devices > 32MiB */
-- if (this->chipsize > (32 << 20))
-- cmx270_nand_write_ALE(mtd, (unsigned char) ((page_addr >> 16) & 0x0f));
-- }
-- }
-+ switch(cmd) {
-
-- /*
-- * program and erase have their own busy handlers
-- * status and sequential in needs no delay
-- */
-- switch (command) {
--
-- case NAND_CMD_PAGEPROG:
-- case NAND_CMD_ERASE1:
-- case NAND_CMD_ERASE2:
-- case NAND_CMD_SEQIN:
-- case NAND_CMD_STATUS:
-- return;
--
-- case NAND_CMD_RESET:
-- if (this->dev_ready)
-- break;
-- udelay(this->chip_delay);
-- cmx270_nand_write_CLE(mtd, NAND_CMD_STATUS);
-- while ( !(this->read_byte(mtd) & 0x40));
-- return;
--
-- /* This applies to read commands */
-- default:
-- /*
-- * If we don't have access to the busy pin, we apply the given
-- * command delay
-- */
-- if (!this->dev_ready) {
-- udelay(this->chip_delay);
-- return;
-- }
-- }
--
-- /* Apply this short delay always to ensure that we do wait tWB in
-- * any case on any machine. */
-- ndelay (100);
-- /* wait until command is processed */
-- while (!this->dev_ready(mtd));
-- ndelay (100);
-+ case NAND_CTL_SETCLE:
-+ nandaddr |= (1 << 2);
-+ this->IO_ADDR_R = (void __iomem*)nandaddr;
-+ this->IO_ADDR_W = (void __iomem*)nandaddr;
-+ break;
-+ case NAND_CTL_CLRCLE:
-+ nandaddr &= ~(1 << 2);
-+ this->IO_ADDR_R = (void __iomem*)nandaddr;
-+ this->IO_ADDR_W = (void __iomem*)nandaddr;
-+ break;
-+
-+ case NAND_CTL_SETALE:
-+ nandaddr |= (1 << 3);
-+ this->IO_ADDR_R = (void __iomem*)nandaddr;
-+ this->IO_ADDR_W = (void __iomem*)nandaddr;
-+ break;
-+ case NAND_CTL_CLRALE:
-+ nandaddr &= ~(1 << 3);
-+ this->IO_ADDR_R = (void __iomem*)nandaddr;
-+ this->IO_ADDR_W = (void __iomem*)nandaddr;
-+ break;
-+
-+ case NAND_CTL_SETNCE:
-+ nand_cs_on();
-+ break;
-+ case NAND_CTL_CLRNCE:
-+ nand_cs_off();
-+ break;
-+ }
-+
-+ DRAIN_WB();
- }
-
--/* Same as nand_core:nand_command_lp() but with different memory
-- * addresses for writing to ALE and CLE and without 16 bit support.
-+
-+/*
-+ * read device ready pin
- */
--static void cmx270_nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr)
-+static int cmx270_device_ready(struct mtd_info *mtd)
- {
-- register struct nand_chip *this = mtd->priv;
--
-- /* Emulate NAND_CMD_READOOB */
-- if (command == NAND_CMD_READOOB) {
-- column += mtd->oobblock;
-- command = NAND_CMD_READ0;
--// printk("Read OOB: column: $%x, page: $%x\n", column, page_addr);
-- }
--
-- /* Write out the command to the device. */
-- cmx270_nand_write_CLE(mtd, command);
--
-- if (column != -1 || page_addr != -1) {
--
-- /* Serially input address */
-- if (column != -1) {
-- cmx270_nand_write_ALE(mtd, column & 0xff);
-- cmx270_nand_write_ALE(mtd, column >> 8);
-- if ((column >> 8) > 0xf) {
-- printk("out of range column\n");
-- }
-- }
-- if (page_addr != -1) {
-- cmx270_nand_write_ALE(mtd, (unsigned char) (page_addr & 0xff));
-- cmx270_nand_write_ALE(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
-- /* One more address cycle for devices > 128MiB */
-- if (this->chipsize > (128 << 20)) {
-- cmx270_nand_write_ALE(mtd, (unsigned char) ((page_addr >> 16) & 0xff));
-- }
-- }
-- }
-+ DRAIN_WB();
-
-- udelay(1);
--
-- /*
-- * program and erase have their own busy handlers
-- * status and sequential in needs no delay
-- */
-- 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_STATUS:
-- case NAND_CMD_DEPLETE1:
-- return;
--
-- /*
-- * read error status commands require only a short delay
-- */
-- case NAND_CMD_STATUS_ERROR:
-- case NAND_CMD_STATUS_ERROR0:
-- case NAND_CMD_STATUS_ERROR1:
-- case NAND_CMD_STATUS_ERROR2:
-- case NAND_CMD_STATUS_ERROR3:
-- udelay(this->chip_delay);
-- return;
--
-- case NAND_CMD_RESET:
-- if (this->dev_ready)
-- break;
-- udelay(this->chip_delay);
-- cmx270_nand_write_CLE(mtd, NAND_CMD_STATUS);
-- while ( !(this->read_byte(mtd) & NAND_STATUS_READY));
-- return;
--
-- case NAND_CMD_READ0:
-- /* Write out the start read command */
-- cmx270_nand_write_CLE(mtd, NAND_CMD_READSTART);
-- /* Fall through into ready check */
--
-- /* This applies to read commands */
-- default:
-- /*
-- * If we don't have access to the busy pin, we apply the given
-- * command delay
-- */
-- if (!this->dev_ready) {
-- udelay (this->chip_delay);
-- return;
-- }
-- }
--
-- /* Apply this short delay always to ensure that we do wait tWB in
-- * any case on any machine. */
-- ndelay (100);
-- /* wait until command is processed */
-- while (!this->dev_ready(mtd));
-+ return (GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB));
- }
-
--
--#ifdef CONFIG_MTD_PARTITIONS
--const char *part_probes[] = { "cmdlinepart", NULL };
--#endif
--
--int __init cmx270_nand_init(void)
-+/*
-+ * Main initialization routine
-+ */
-+static int __devinit cmx270_init(void)
- {
- struct nand_chip *this;
-- struct mtd_partition* cmx270_partition_info;
-- int err = 0;
--
-- pxa_gpio_mode(CM_X270_GPIO_NAND_RB);
-+ const char *part_type;
-+ struct mtd_partition *mtd_parts;
-+ int mtd_parts_nb = 0;
-+ int ret;
-
-- GPSR(CM_X270_GPIO_NAND_CS) = GPIO_bit(CM_X270_GPIO_NAND_CS);
-- pxa_gpio_mode(CM_X270_GPIO_NAND_CS | GPIO_OUT);
--
- /* Allocate memory for MTD device structure and private data */
-- cmx270_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
-- GFP_KERNEL);
-- if (!cmx270_mtd) {
-- printk(KERN_WARNING "Unable to allocate cm-x270 NAND mtd device structure.\n");
-- err = -ENOMEM;
-- goto out;
-+ cmx270_nand_mtd = kzalloc(sizeof(struct mtd_info) +
-+ sizeof(struct nand_chip),
-+ GFP_KERNEL);
-+ if (!cmx270_nand_mtd) {
-+ printk("Unable to allocate CM-X270 NAND MTD device structure.\n");
-+ return -ENOMEM;
- }
-
-- /* map physical address */
-- cmx270_nand_io_base = ioremap(CM_X270_NAND_PHYS, 0x100);
-- if (!cmx270_nand_io_base) {
-- err = -EIO;
-- goto out_mtd;
-+ cmx270_nand_io = ioremap(PXA_CS1_PHYS, 12);
-+ if (!cmx270_nand_io) {
-+ printk("Unable to ioremap NAND device\n");
-+ ret = -EINVAL;
-+ goto err1;
- }
-
- /* Get pointer to private data */
-- this = (struct nand_chip *)(&cmx270_mtd[1]);
--
-- /* Initialize structures */
-- memset((char *) cmx270_mtd, 0, sizeof(struct mtd_info));
-- memset((char *) this, 0, sizeof(struct nand_chip));
-+ this = (struct nand_chip *)(&cmx270_nand_mtd[1]);
-
- /* Link the private data with the MTD structure */
-- cmx270_mtd->priv = this;
-+ cmx270_nand_mtd->owner = THIS_MODULE;
-+ cmx270_nand_mtd->priv = this;
-
-- this->IO_ADDR_R = cmx270_nand_io_base;
-- this->IO_ADDR_W = cmx270_nand_io_base;
-- this->read_byte = cmx270_nand_read_byte;
-- this->write_byte = cmx270_nand_write_byte;
-- this->write_buf = cmx270_nand_write_buf;
-- this->read_buf = cmx270_nand_read_buf;
-- this->verify_buf = cmx270_nand_verify_buf;
-- this->hwcontrol = cmx270_nand_hwcontrol;
-- this->dev_ready = cmx270_nand_device_ready;
-- this->cmdfunc = cmx270_nand_command_lp;
-- this->chip_delay = 25;
-+ /* insert callbacks */
-+ this->IO_ADDR_R = cmx270_nand_io;
-+ this->IO_ADDR_W = cmx270_nand_io;
-+ this->hwcontrol = cmx270_hwcontrol;
-+ this->dev_ready = cmx270_device_ready;
-+
-+ /* 15 us command delay time */
-+ this->chip_delay = 20;
- this->eccmode = NAND_ECC_SOFT;
-
-- /* Scan to find existance of the device */
-- if (nand_scan(cmx270_mtd, 1)) {
-- err = -ENXIO;
-- goto out_ior;
-+ /* read/write functions */
-+ this->read_byte = cmx270_read_byte;
-+ this->read_buf = cmx270_read_buf;
-+ this->write_buf = cmx270_write_buf;
-+ this->verify_buf = cmx270_verify_buf;
-+
-+ /* Scan to find existence of the device */
-+ if (nand_scan (cmx270_nand_mtd, 1)) {
-+ printk(KERN_NOTICE "No NAND device\n");
-+ ret = -ENXIO;
-+ goto err2;
-+ }
-+
-+#ifdef CONFIG_MTD_CMDLINE_PARTS
-+ mtd_parts_nb = parse_mtd_partitions(cmx270_nand_mtd, part_probes,
-+ &mtd_parts, 0);
-+ if (mtd_parts_nb > 0)
-+ part_type = "command line";
-+ else
-+ mtd_parts_nb = 0;
-+#endif
-+ if (!mtd_parts_nb) {
-+ mtd_parts = partition_info;
-+ mtd_parts_nb = NUM_PARTITIONS;
-+ part_type = "static";
- }
-
- /* Register the partitions */
-- cmx270_mtd->name = "cmx270-mtd";
-- nr_partitions = parse_mtd_partitions(cmx270_mtd, part_probes, &cmx270_partition_info, 0);
-- if (nr_partitions <= 0) {
-- nr_partitions = DEFAULT_NUM_PARTITIONS;
-- cmx270_partition_info = cmx270_default_partition_info;
-- }
-+ printk(KERN_NOTICE "Using %s partition definition\n", part_type);
-+ ret = add_mtd_partitions(cmx270_nand_mtd, mtd_parts, mtd_parts_nb);
-+ if (ret)
-+ goto err2;
-+
-+ /* Return happy */
-+ return 0;
-+
-+err2:
-+ iounmap(cmx270_nand_io);
-+err1:
-+ kfree(cmx270_nand_mtd);
-+
-+ return ret;
-
-- add_mtd_partitions(cmx270_mtd, cmx270_partition_info, nr_partitions);
--
-- goto out;
--
--out_ior:
-- iounmap((void*) cmx270_nand_io_base);
--out_mtd:
-- kfree(cmx270_mtd);
--out:
-- return err;
- }
--module_init(cmx270_nand_init);
-+module_init(cmx270_init);
-
--static void __exit cmx270_nand_cleanup(void)
-+/*
-+ * Clean up routine
-+ */
-+static void __devexit cmx270_cleanup(void)
- {
-- nand_release(cmx270_mtd);
-- kfree(cmx270_mtd);
-+ /* Release resources, unregister device */
-+ nand_release(cmx270_nand_mtd);
-+
-+ iounmap(cmx270_nand_io);
-+
-+ /* Free the MTD device structure */
-+ kfree (cmx270_nand_mtd);
- }
-+module_exit(cmx270_cleanup);
-
- MODULE_LICENSE("GPL");
--MODULE_AUTHOR("Raphael Assenat <raph@8d.com>");
--MODULE_DESCRIPTION("NAND flash driver for cm-x270 boards");
--
-+MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
-+MODULE_DESCRIPTION("NAND flash driver for Compulab CM-X270 Module");
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-18 08:47:57 +0000