summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--README4
-rw-r--r--common/cmd_nand.c15
-rw-r--r--drivers/gpio/pca953x.c112
-rw-r--r--drivers/mtd/nand/atmel_nand.c2
-rw-r--r--drivers/mtd/nand/nand.c2
-rw-r--r--drivers/mtd/nand/nand_base.c29
-rw-r--r--drivers/mtd/nand/nand_util.c63
-rw-r--r--include/linux/mtd/nand.h4
-rw-r--r--include/nand.h2
9 files changed, 184 insertions, 49 deletions
diff --git a/README b/README
index 556bf59c1..8e1a9ff2c 100644
--- a/README
+++ b/README
@@ -746,6 +746,10 @@ The following options need to be configured:
CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO
CONFIG_PCA953X_INFO - enable pca953x info command
+ The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of
+ chip-ngpio pairs that tell the PCA953X driver the number of
+ pins supported by a particular chip.
+
Note that if the GPIO device uses I2C, then the I2C interface
must also be configured. See I2C Support, below.
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index 678364535..7bd37de78 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -574,7 +574,15 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
(u_char *)addr);
else
ret = nand_write_skip_bad(nand, off, &rwsize,
- (u_char *)addr);
+ (u_char *)addr, 0);
+#ifdef CONFIG_CMD_NAND_YAFFS
+ } else if (!strcmp(s, ".yaffs")) {
+ if (read) {
+ printf("Unknown nand command suffix '%s'.\n", s);
+ return 1;
+ }
+ ret = nand_write_skip_bad(nand, off, &rwsize, (u_char *)addr, 1);
+#endif
} else if (!strcmp(s, ".oob")) {
/* out-of-band data */
mtd_oob_ops_t ops = {
@@ -680,6 +688,11 @@ U_BOOT_CMD(
"nand write - addr off|partition size\n"
" read/write 'size' bytes starting at offset 'off'\n"
" to/from memory address 'addr', skipping bad blocks.\n"
+#ifdef CONFIG_CMD_NAND_YAFFS
+ "nand write.yaffs - addr off|partition size\n"
+ " write 'size' bytes starting at offset 'off' with yaffs format\n"
+ " from memory address 'addr', skipping bad blocks.\n"
+#endif
"nand erase[.spread] [clean] [off [size]] - erase 'size' bytes "
"from offset 'off'\n"
" With '.spread', erase enough for given file size, otherwise,\n"
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 6e82bd66a..359fdeea2 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -17,8 +17,8 @@
*/
/*
- * Driver for NXP's 4 and 8 bit I2C gpio expanders (eg pca9537, pca9557, etc)
- * TODO: support additional devices with more than 8-bits GPIO
+ * Driver for NXP's 4, 8 and 16 bit I2C gpio expanders (eg pca9537, pca9557,
+ * pca9539, etc)
*/
#include <common.h>
@@ -38,20 +38,81 @@ enum {
PCA953X_CMD_INVERT,
};
+#ifdef CONFIG_SYS_I2C_PCA953X_WIDTH
+struct pca953x_chip_ngpio {
+ uint8_t chip;
+ uint8_t ngpio;
+};
+
+static struct pca953x_chip_ngpio pca953x_chip_ngpios[] =
+ CONFIG_SYS_I2C_PCA953X_WIDTH;
+
+#define NUM_CHIP_GPIOS (sizeof(pca953x_chip_ngpios) / \
+ sizeof(struct pca953x_chip_ngpio))
+
+/*
+ * Determine the number of GPIO pins supported. If we don't know we assume
+ * 8 pins.
+ */
+static int pca953x_ngpio(uint8_t chip)
+{
+ int i;
+
+ for (i = 0; i < NUM_CHIP_GPIOS; i++)
+ if (pca953x_chip_ngpios[i].chip == chip)
+ return pca953x_chip_ngpios[i].ngpio;
+
+ return 8;
+}
+#else
+static int pca953x_ngpio(uint8_t chip)
+{
+ return 8;
+}
+#endif
+
/*
* Modify masked bits in register
*/
static int pca953x_reg_write(uint8_t chip, uint addr, uint mask, uint data)
{
- uint8_t val;
+ uint8_t valb;
+ uint16_t valw;
- if (i2c_read(chip, addr, 1, &val, 1))
- return -1;
+ if (pca953x_ngpio(chip) <= 8) {
+ if (i2c_read(chip, addr, 1, &valb, 1))
+ return -1;
+
+ valb &= ~mask;
+ valb |= data;
+
+ return i2c_write(chip, addr, 1, &valb, 1);
+ } else {
+ if (i2c_read(chip, addr << 1, 1, (u8*)&valw, 2))
+ return -1;
- val &= ~mask;
- val |= data;
+ valw &= ~mask;
+ valw |= data;
- return i2c_write(chip, addr, 1, &val, 1);
+ return i2c_write(chip, addr << 1, 1, (u8*)&valw, 2);
+ }
+}
+
+static int pca953x_reg_read(uint8_t chip, uint addr, uint *data)
+{
+ uint8_t valb;
+ uint16_t valw;
+
+ if (pca953x_ngpio(chip) <= 8) {
+ if (i2c_read(chip, addr, 1, &valb, 1))
+ return -1;
+ *data = (int)valb;
+ } else {
+ if (i2c_read(chip, addr << 1, 1, (u8*)&valw, 2))
+ return -1;
+ *data = (int)valw;
+ }
+ return 0;
}
/*
@@ -86,9 +147,9 @@ int pca953x_set_dir(uint8_t chip, uint mask, uint data)
*/
int pca953x_get_val(uint8_t chip)
{
- uint8_t val;
+ uint val;
- if (i2c_read(chip, 0, 1, &val, 1))
+ if (pca953x_reg_read(chip, PCA953X_IN, &val) < 0)
return -1;
return (int)val;
@@ -102,37 +163,44 @@ int pca953x_get_val(uint8_t chip)
static int pca953x_info(uint8_t chip)
{
int i;
- uint8_t data;
+ uint data;
+ int nr_gpio = pca953x_ngpio(chip);
+ int msb = nr_gpio - 1;
- printf("pca953x@ 0x%x:\n\n", chip);
- printf("gpio pins: 76543210\n");
- printf("-------------------\n");
+ printf("pca953x@ 0x%x (%d pins):\n\n", chip, nr_gpio);
+ printf("gpio pins: ");
+ for (i = msb; i >= 0; i--)
+ printf("%x", i);
+ printf("\n");
+ for (i = 11 + nr_gpio; i > 0; i--)
+ printf("-");
+ printf("\n");
- if (i2c_read(chip, PCA953X_CONF, 1, &data, 1))
+ if (pca953x_reg_read(chip, PCA953X_CONF, &data) < 0)
return -1;
printf("conf: ");
- for (i = 7; i >= 0; i--)
+ for (i = msb; i >= 0; i--)
printf("%c", data & (1 << i) ? 'i' : 'o');
printf("\n");
- if (i2c_read(chip, PCA953X_POL, 1, &data, 1))
+ if (pca953x_reg_read(chip, PCA953X_POL, &data) < 0)
return -1;
printf("invert: ");
- for (i = 7; i >= 0; i--)
+ for (i = msb; i >= 0; i--)
printf("%c", data & (1 << i) ? '1' : '0');
printf("\n");
- if (i2c_read(chip, PCA953X_IN, 1, &data, 1))
+ if (pca953x_reg_read(chip, PCA953X_IN, &data) < 0)
return -1;
printf("input: ");
- for (i = 7; i >= 0; i--)
+ for (i = msb; i >= 0; i--)
printf("%c", data & (1 << i) ? '1' : '0');
printf("\n");
- if (i2c_read(chip, PCA953X_OUT, 1, &data, 1))
+ if (pca953x_reg_read(chip, PCA953X_OUT, &data) < 0)
return -1;
printf("output: ");
- for (i = 7; i >= 0; i--)
+ for (i = msb; i >= 0; i--)
printf("%c", data & (1 << i) ? '1' : '0');
printf("\n");
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index d5eb54ad8..ab8bbb3ae 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -296,7 +296,7 @@ int board_nand_init(struct nand_chip *nand)
mtd->priv = nand;
/* Detect NAND chips */
- if (nand_scan_ident(mtd, 1)) {
+ if (nand_scan_ident(mtd, 1, NULL)) {
printk(KERN_WARNING "NAND Flash not found !\n");
return -ENXIO;
}
diff --git a/drivers/mtd/nand/nand.c b/drivers/mtd/nand/nand.c
index c0e068ab7..d987f4c85 100644
--- a/drivers/mtd/nand/nand.c
+++ b/drivers/mtd/nand/nand.c
@@ -43,7 +43,7 @@ static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand,
ulong base_addr)
{
int maxchips = CONFIG_SYS_NAND_MAX_CHIPS;
- int __attribute__((unused)) i = 0;
+ static int __attribute__((unused)) i = 0;
if (maxchips < 1)
maxchips = 1;
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 5239c1fcf..3b96b0e2a 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2414,10 +2414,10 @@ static void nand_set_defaults(struct nand_chip *chip, int busw)
*/
static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
struct nand_chip *chip,
- int busw, int *maf_id)
+ int busw, int *maf_id,
+ const struct nand_flash_dev *type)
{
- const struct nand_flash_dev *type = NULL;
- int i, dev_id, maf_idx;
+ int dev_id, maf_idx;
int tmp_id, tmp_manf;
/* Select the device */
@@ -2456,15 +2456,14 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
return ERR_PTR(-ENODEV);
}
- /* Lookup the flash id */
- for (i = 0; nand_flash_ids[i].name != NULL; i++) {
- if (dev_id == nand_flash_ids[i].id) {
- type = &nand_flash_ids[i];
- break;
- }
- }
+ if (!type)
+ type = nand_flash_ids;
+
+ for (; type->name != NULL; type++)
+ if (dev_id == type->id)
+ break;
- if (!type) {
+ if (!type->name) {
/* supress warning if there is no nand */
if (*maf_id != 0x00 && *maf_id != 0xff &&
dev_id != 0x00 && dev_id != 0xff)
@@ -2580,13 +2579,15 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
* nand_scan_ident - [NAND Interface] Scan for the NAND device
* @mtd: MTD device structure
* @maxchips: Number of chips to scan for
+ * @table: Alternative NAND ID table
*
* This is the first phase of the normal nand_scan() function. It
* reads the flash ID and sets up MTD fields accordingly.
*
* The mtd->owner field must be set to the module of the caller.
*/
-int nand_scan_ident(struct mtd_info *mtd, int maxchips)
+int nand_scan_ident(struct mtd_info *mtd, int maxchips,
+ const struct nand_flash_dev *table)
{
int i, busw, nand_maf_id;
struct nand_chip *chip = mtd->priv;
@@ -2598,7 +2599,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips)
nand_set_defaults(chip, busw);
/* Read the flash type */
- type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id);
+ type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, table);
if (IS_ERR(type)) {
#ifndef CONFIG_SYS_NAND_QUIET_TEST
@@ -2869,7 +2870,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
{
int ret;
- ret = nand_scan_ident(mtd, maxchips);
+ ret = nand_scan_ident(mtd, maxchips, NULL);
if (!ret)
ret = nand_scan_tail(mtd);
return ret;
diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c
index 22c741169..8b4f73881 100644
--- a/drivers/mtd/nand/nand_util.c
+++ b/drivers/mtd/nand/nand_util.c
@@ -447,17 +447,34 @@ static int check_skip_len(nand_info_t *nand, loff_t offset, size_t length)
* @param nand NAND device
* @param offset offset in flash
* @param length buffer length
- * @param buf buffer to read from
+ * @param buffer buffer to read from
+ * @param withoob whether write with yaffs format
* @return 0 in case of success
*/
int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
- u_char *buffer)
+ u_char *buffer, int withoob)
{
- int rval;
+ int rval = 0, blocksize;
size_t left_to_write = *length;
u_char *p_buffer = buffer;
int need_skip;
+#ifdef CONFIG_CMD_NAND_YAFFS
+ if (withoob) {
+ int pages;
+ pages = nand->erasesize / nand->writesize;
+ blocksize = (pages * nand->oobsize) + nand->erasesize;
+ if (*length % (nand->writesize + nand->oobsize)) {
+ printf ("Attempt to write incomplete page"
+ " in yaffs mode\n");
+ return -EINVAL;
+ }
+ } else
+#endif
+ {
+ blocksize = nand->erasesize;
+ }
+
/*
* nand_write() handles unaligned, partial page writes.
*
@@ -506,12 +523,44 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
continue;
}
- if (left_to_write < (nand->erasesize - block_offset))
+ if (left_to_write < (blocksize - block_offset))
write_size = left_to_write;
else
- write_size = nand->erasesize - block_offset;
+ write_size = blocksize - block_offset;
+
+#ifdef CONFIG_CMD_NAND_YAFFS
+ if (withoob) {
+ int page, pages;
+ size_t pagesize = nand->writesize;
+ size_t pagesize_oob = pagesize + nand->oobsize;
+ struct mtd_oob_ops ops;
+
+ ops.len = pagesize;
+ ops.ooblen = nand->oobsize;
+ ops.mode = MTD_OOB_AUTO;
+ ops.ooboffs = 0;
+
+ pages = write_size / pagesize_oob;
+ for (page = 0; page < pages; page++) {
+ ops.datbuf = p_buffer;
+ ops.oobbuf = ops.datbuf + pagesize;
+
+ rval = nand->write_oob(nand, offset, &ops);
+ if (!rval)
+ break;
+
+ offset += pagesize;
+ p_buffer += pagesize_oob;
+ }
+ }
+ else
+#endif
+ {
+ rval = nand_write (nand, offset, &write_size, p_buffer);
+ offset += write_size;
+ p_buffer += write_size;
+ }
- rval = nand_write (nand, offset, &write_size, p_buffer);
if (rval != 0) {
printf ("NAND write to offset %llx failed %d\n",
offset, rval);
@@ -520,8 +569,6 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
}
left_to_write -= write_size;
- offset += write_size;
- p_buffer += write_size;
}
return 0;
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 1128f5ae1..d299929ab 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -33,11 +33,13 @@
struct mtd_info;
+struct nand_flash_dev;
/* Scan and identify a NAND device */
extern int nand_scan (struct mtd_info *mtd, int max_chips);
/* Separate phases of nand_scan(), allowing board driver to intervene
* and override command or ECC setup according to flash type */
-extern int nand_scan_ident(struct mtd_info *mtd, int max_chips);
+extern int nand_scan_ident(struct mtd_info *mtd, int max_chips,
+ const struct nand_flash_dev *table);
extern int nand_scan_tail(struct mtd_info *mtd);
/* Free resources held by the NAND device */
diff --git a/include/nand.h b/include/nand.h
index a4524113d..7459bd033 100644
--- a/include/nand.h
+++ b/include/nand.h
@@ -115,7 +115,7 @@ typedef struct nand_erase_options nand_erase_options_t;
int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
u_char *buffer);
int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
- u_char *buffer);
+ u_char *buffer, int withoob);
int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
#define NAND_LOCK_STATUS_TIGHT 0x01
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 09:06:57 +0000