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path: root/drivers/mtd/nand/sharpsl.c
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Diffstat (limited to 'drivers/mtd/nand/sharpsl.c')
-rw-r--r--drivers/mtd/nand/sharpsl.c146
1 files changed, 66 insertions, 80 deletions
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 1924a4f137c..21743658d15 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -46,7 +46,6 @@ static int sharpsl_phys_base = 0x0C000000;
#define FLCLE (1 << 1)
#define FLCE0 (1 << 0)
-
/*
* MTD structure for SharpSL
*/
@@ -60,50 +59,44 @@ static struct mtd_info *sharpsl_mtd = NULL;
static int nr_partitions;
static struct mtd_partition sharpsl_nand_default_partition_info[] = {
{
- .name = "System Area",
- .offset = 0,
- .size = 7 * 1024 * 1024,
- },
+ .name = "System Area",
+ .offset = 0,
+ .size = 7 * 1024 * 1024,
+ },
{
- .name = "Root Filesystem",
- .offset = 7 * 1024 * 1024,
- .size = 30 * 1024 * 1024,
- },
+ .name = "Root Filesystem",
+ .offset = 7 * 1024 * 1024,
+ .size = 30 * 1024 * 1024,
+ },
{
- .name = "Home Filesystem",
- .offset = MTDPART_OFS_APPEND ,
- .size = MTDPART_SIZ_FULL ,
- },
+ .name = "Home Filesystem",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ },
};
/*
* hardware specific access to control-lines
+ * ctrl:
+ * NAND_CNE: bit 0 -> bit 0 & 4
+ * NAND_CLE: bit 1 -> bit 1
+ * NAND_ALE: bit 2 -> bit 2
+ *
*/
-static void
-sharpsl_nand_hwcontrol(struct mtd_info* mtd, int cmd)
+static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
{
- switch (cmd) {
- case NAND_CTL_SETCLE:
- writeb(readb(FLASHCTL) | FLCLE, FLASHCTL);
- break;
- case NAND_CTL_CLRCLE:
- writeb(readb(FLASHCTL) & ~FLCLE, FLASHCTL);
- break;
-
- case NAND_CTL_SETALE:
- writeb(readb(FLASHCTL) | FLALE, FLASHCTL);
- break;
- case NAND_CTL_CLRALE:
- writeb(readb(FLASHCTL) & ~FLALE, FLASHCTL);
- break;
-
- case NAND_CTL_SETNCE:
- writeb(readb(FLASHCTL) & ~(FLCE0|FLCE1), FLASHCTL);
- break;
- case NAND_CTL_CLRNCE:
- writeb(readb(FLASHCTL) | (FLCE0|FLCE1), FLASHCTL);
- break;
+ struct nand_chip *chip = mtd->priv;
+
+ if (ctrl & NAND_CTRL_CHANGE) {
+ unsigned char bits = ctrl & 0x07;
+
+ bits |= (ctrl & 0x01) << 4;
+ writeb((readb(FLASHCTL) & 0x17) | bits, FLASHCTL);
}
+
+ if (cmd != NAND_CMD_NONE)
+ writeb(cmd, chip->IO_ADDR_W);
}
static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
@@ -122,31 +115,26 @@ static struct nand_bbt_descr sharpsl_akita_bbt = {
.pattern = scan_ff_pattern
};
-static struct nand_oobinfo akita_oobinfo = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout akita_oobinfo = {
.eccbytes = 24,
.eccpos = {
- 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
- 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
- 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
- .oobfree = { {0x08, 0x09} }
+ 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
+ 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
+ 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
+ .oobfree = {{0x08, 0x09}}
};
-static int
-sharpsl_nand_dev_ready(struct mtd_info* mtd)
+static int sharpsl_nand_dev_ready(struct mtd_info *mtd)
{
return !((readb(FLASHCTL) & FLRYBY) == 0);
}
-static void
-sharpsl_nand_enable_hwecc(struct mtd_info* mtd, int mode)
+static void sharpsl_nand_enable_hwecc(struct mtd_info *mtd, int mode)
{
- writeb(0 ,ECCCLRR);
+ writeb(0, ECCCLRR);
}
-static int
-sharpsl_nand_calculate_ecc(struct mtd_info* mtd, const u_char* dat,
- u_char* ecc_code)
+static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, u_char * ecc_code)
{
ecc_code[0] = ~readb(ECCLPUB);
ecc_code[1] = ~readb(ECCLPLB);
@@ -154,47 +142,44 @@ sharpsl_nand_calculate_ecc(struct mtd_info* mtd, const u_char* dat,
return readb(ECCCNTR) != 0;
}
-
#ifdef CONFIG_MTD_PARTITIONS
const char *part_probes[] = { "cmdlinepart", NULL };
#endif
-
/*
* Main initialization routine
*/
-int __init
-sharpsl_nand_init(void)
+static int __init sharpsl_nand_init(void)
{
struct nand_chip *this;
- struct mtd_partition* sharpsl_partition_info;
+ struct mtd_partition *sharpsl_partition_info;
int err = 0;
/* Allocate memory for MTD device structure and private data */
- sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
- GFP_KERNEL);
+ sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
if (!sharpsl_mtd) {
- printk ("Unable to allocate SharpSL NAND MTD device structure.\n");
+ printk("Unable to allocate SharpSL NAND MTD device structure.\n");
return -ENOMEM;
}
/* map physical adress */
sharpsl_io_base = ioremap(sharpsl_phys_base, 0x1000);
- if(!sharpsl_io_base){
+ if (!sharpsl_io_base) {
printk("ioremap to access Sharp SL NAND chip failed\n");
kfree(sharpsl_mtd);
return -EIO;
}
/* Get pointer to private data */
- this = (struct nand_chip *) (&sharpsl_mtd[1]);
+ this = (struct nand_chip *)(&sharpsl_mtd[1]);
/* Initialize structures */
- memset((char *) sharpsl_mtd, 0, sizeof(struct mtd_info));
- memset((char *) this, 0, sizeof(struct nand_chip));
+ memset(sharpsl_mtd, 0, sizeof(struct mtd_info));
+ memset(this, 0, sizeof(struct nand_chip));
/* Link the private data with the MTD structure */
sharpsl_mtd->priv = this;
+ sharpsl_mtd->owner = THIS_MODULE;
/*
* PXA initialize
@@ -205,23 +190,25 @@ sharpsl_nand_init(void)
this->IO_ADDR_R = FLASHIO;
this->IO_ADDR_W = FLASHIO;
/* Set address of hardware control function */
- this->hwcontrol = sharpsl_nand_hwcontrol;
+ this->cmd_ctrl = sharpsl_nand_hwcontrol;
this->dev_ready = sharpsl_nand_dev_ready;
/* 15 us command delay time */
this->chip_delay = 15;
/* set eccmode using hardware ECC */
- this->eccmode = NAND_ECC_HW3_256;
+ this->ecc.mode = NAND_ECC_HW;
+ this->ecc.size = 256;
+ this->ecc.bytes = 3;
this->badblock_pattern = &sharpsl_bbt;
if (machine_is_akita() || machine_is_borzoi()) {
this->badblock_pattern = &sharpsl_akita_bbt;
- this->autooob = &akita_oobinfo;
+ this->ecc.layout = &akita_oobinfo;
}
- this->enable_hwecc = sharpsl_nand_enable_hwecc;
- this->calculate_ecc = sharpsl_nand_calculate_ecc;
- this->correct_data = nand_correct_data;
+ this->ecc.hwctl = sharpsl_nand_enable_hwecc;
+ this->ecc.calculate = sharpsl_nand_calculate_ecc;
+ this->ecc.correct = nand_correct_data;
/* Scan to find existence of the device */
- err=nand_scan(sharpsl_mtd,1);
+ err = nand_scan(sharpsl_mtd, 1);
if (err) {
iounmap(sharpsl_io_base);
kfree(sharpsl_mtd);
@@ -230,24 +217,23 @@ sharpsl_nand_init(void)
/* Register the partitions */
sharpsl_mtd->name = "sharpsl-nand";
- nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes,
- &sharpsl_partition_info, 0);
+ nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, &sharpsl_partition_info, 0);
if (nr_partitions <= 0) {
nr_partitions = DEFAULT_NUM_PARTITIONS;
sharpsl_partition_info = sharpsl_nand_default_partition_info;
if (machine_is_poodle()) {
- sharpsl_partition_info[1].size=30 * 1024 * 1024;
+ sharpsl_partition_info[1].size = 22 * 1024 * 1024;
} else if (machine_is_corgi() || machine_is_shepherd()) {
- sharpsl_partition_info[1].size=25 * 1024 * 1024;
+ sharpsl_partition_info[1].size = 25 * 1024 * 1024;
} else if (machine_is_husky()) {
- sharpsl_partition_info[1].size=53 * 1024 * 1024;
+ sharpsl_partition_info[1].size = 53 * 1024 * 1024;
} else if (machine_is_spitz()) {
- sharpsl_partition_info[1].size=5 * 1024 * 1024;
+ sharpsl_partition_info[1].size = 5 * 1024 * 1024;
} else if (machine_is_akita()) {
- sharpsl_partition_info[1].size=58 * 1024 * 1024;
+ sharpsl_partition_info[1].size = 58 * 1024 * 1024;
} else if (machine_is_borzoi()) {
- sharpsl_partition_info[1].size=32 * 1024 * 1024;
+ sharpsl_partition_info[1].size = 32 * 1024 * 1024;
}
}
@@ -261,15 +247,15 @@ sharpsl_nand_init(void)
/* Return happy */
return 0;
}
+
module_init(sharpsl_nand_init);
/*
* Clean up routine
*/
-#ifdef MODULE
static void __exit sharpsl_nand_cleanup(void)
{
- struct nand_chip *this = (struct nand_chip *) &sharpsl_mtd[1];
+ struct nand_chip *this = (struct nand_chip *)&sharpsl_mtd[1];
/* Release resources, unregister device */
nand_release(sharpsl_mtd);
@@ -279,8 +265,8 @@ static void __exit sharpsl_nand_cleanup(void)
/* Free the MTD device structure */
kfree(sharpsl_mtd);
}
+
module_exit(sharpsl_nand_cleanup);
-#endif
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-08 00:39:24 +0000