mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-02-17 22:49:02 +00:00
misc: i2c_eeprom: add size query
Add ability to query size of eeprom device and partitions Signed-off-by: Robert Beckett <bob.beckett@collabora.com> Reviewed-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Robert Beckett
Heiko Schocher
parent
1a59cb426d
commit
033e18b47b
2 changed files with 138 additions and 19 deletions
|
|
@ -12,6 +12,11 @@
|
|||
#include <i2c.h>
|
||||
#include <i2c_eeprom.h>
|
||||
|
||||
struct i2c_eeprom_drv_data {
|
||||
u32 size; /* size in bytes */
|
||||
u32 pagewidth; /* pagesize = 2^pagewidth */
|
||||
};
|
||||
|
||||
int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
|
||||
{
|
||||
const struct i2c_eeprom_ops *ops = device_get_ops(dev);
|
||||
|
|
@ -32,6 +37,16 @@ int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size)
|
|||
return ops->write(dev, offset, buf, size);
|
||||
}
|
||||
|
||||
int i2c_eeprom_size(struct udevice *dev)
|
||||
{
|
||||
const struct i2c_eeprom_ops *ops = device_get_ops(dev);
|
||||
|
||||
if (!ops->size)
|
||||
return -ENOSYS;
|
||||
|
||||
return ops->size(dev);
|
||||
}
|
||||
|
||||
static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
|
||||
int size)
|
||||
{
|
||||
|
|
@ -61,25 +76,39 @@ static int i2c_eeprom_std_write(struct udevice *dev, int offset,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int i2c_eeprom_std_size(struct udevice *dev)
|
||||
{
|
||||
struct i2c_eeprom *priv = dev_get_priv(dev);
|
||||
|
||||
return priv->size;
|
||||
}
|
||||
|
||||
static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
|
||||
.read = i2c_eeprom_std_read,
|
||||
.write = i2c_eeprom_std_write,
|
||||
.size = i2c_eeprom_std_size,
|
||||
};
|
||||
|
||||
static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
|
||||
{
|
||||
struct i2c_eeprom *priv = dev_get_priv(dev);
|
||||
u64 data = dev_get_driver_data(dev);
|
||||
struct i2c_eeprom_drv_data *data =
|
||||
(struct i2c_eeprom_drv_data *)dev_get_driver_data(dev);
|
||||
u32 pagesize;
|
||||
u32 size;
|
||||
|
||||
if (dev_read_u32(dev, "pagesize", &pagesize) == 0) {
|
||||
priv->pagesize = pagesize;
|
||||
return 0;
|
||||
} else {
|
||||
/* 6 bit -> page size of up to 2^63 (should be sufficient) */
|
||||
priv->pagewidth = data->pagewidth;
|
||||
priv->pagesize = (1 << priv->pagewidth);
|
||||
}
|
||||
|
||||
/* 6 bit -> page size of up to 2^63 (should be sufficient) */
|
||||
priv->pagewidth = data & 0x3F;
|
||||
priv->pagesize = (1 << priv->pagewidth);
|
||||
if (dev_read_u32(dev, "size", &size) == 0)
|
||||
priv->size = size;
|
||||
else
|
||||
priv->size = data->size;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -120,21 +149,91 @@ static int i2c_eeprom_std_probe(struct udevice *dev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_eeprom_drv_data eeprom_data = {
|
||||
.size = 0,
|
||||
.pagewidth = 0,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data mc24aa02e48_data = {
|
||||
.size = 256,
|
||||
.pagewidth = 3,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c01a_data = {
|
||||
.size = 128,
|
||||
.pagewidth = 3,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c02_data = {
|
||||
.size = 256,
|
||||
.pagewidth = 3,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c04_data = {
|
||||
.size = 512,
|
||||
.pagewidth = 4,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c08_data = {
|
||||
.size = 1024,
|
||||
.pagewidth = 4,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c08a_data = {
|
||||
.size = 1024,
|
||||
.pagewidth = 4,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c16a_data = {
|
||||
.size = 2048,
|
||||
.pagewidth = 4,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24mac402_data = {
|
||||
.size = 256,
|
||||
.pagewidth = 4,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c32_data = {
|
||||
.size = 4096,
|
||||
.pagewidth = 5,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c64_data = {
|
||||
.size = 8192,
|
||||
.pagewidth = 5,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c128_data = {
|
||||
.size = 16384,
|
||||
.pagewidth = 6,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c256_data = {
|
||||
.size = 32768,
|
||||
.pagewidth = 6,
|
||||
};
|
||||
|
||||
static const struct i2c_eeprom_drv_data atmel24c512_data = {
|
||||
.size = 65536,
|
||||
.pagewidth = 6,
|
||||
};
|
||||
|
||||
static const struct udevice_id i2c_eeprom_std_ids[] = {
|
||||
{ .compatible = "i2c-eeprom", .data = 0 },
|
||||
{ .compatible = "microchip,24aa02e48", .data = 3 },
|
||||
{ .compatible = "atmel,24c01a", .data = 3 },
|
||||
{ .compatible = "atmel,24c02", .data = 3 },
|
||||
{ .compatible = "atmel,24c04", .data = 4 },
|
||||
{ .compatible = "atmel,24c08", .data = 4 },
|
||||
{ .compatible = "atmel,24c08a", .data = 4 },
|
||||
{ .compatible = "atmel,24c16a", .data = 4 },
|
||||
{ .compatible = "atmel,24mac402", .data = 4 },
|
||||
{ .compatible = "atmel,24c32", .data = 5 },
|
||||
{ .compatible = "atmel,24c64", .data = 5 },
|
||||
{ .compatible = "atmel,24c128", .data = 6 },
|
||||
{ .compatible = "atmel,24c256", .data = 6 },
|
||||
{ .compatible = "atmel,24c512", .data = 6 },
|
||||
{ .compatible = "i2c-eeprom", (ulong)&eeprom_data },
|
||||
{ .compatible = "microchip,24aa02e48", (ulong)&mc24aa02e48_data },
|
||||
{ .compatible = "atmel,24c01a", (ulong)&atmel24c01a_data },
|
||||
{ .compatible = "atmel,24c02", (ulong)&atmel24c02_data },
|
||||
{ .compatible = "atmel,24c04", (ulong)&atmel24c04_data },
|
||||
{ .compatible = "atmel,24c08", (ulong)&atmel24c08_data },
|
||||
{ .compatible = "atmel,24c08a", (ulong)&atmel24c08a_data },
|
||||
{ .compatible = "atmel,24c16a", (ulong)&atmel24c16a_data },
|
||||
{ .compatible = "atmel,24mac402", (ulong)&atmel24mac402_data },
|
||||
{ .compatible = "atmel,24c32", (ulong)&atmel24c32_data },
|
||||
{ .compatible = "atmel,24c64", (ulong)&atmel24c64_data },
|
||||
{ .compatible = "atmel,24c128", (ulong)&atmel24c128_data },
|
||||
{ .compatible = "atmel,24c256", (ulong)&atmel24c256_data },
|
||||
{ .compatible = "atmel,24c512", (ulong)&atmel24c512_data },
|
||||
{ }
|
||||
};
|
||||
|
||||
|
|
@ -208,9 +307,17 @@ static int i2c_eeprom_partition_write(struct udevice *dev, int offset,
|
|||
size);
|
||||
}
|
||||
|
||||
static int i2c_eeprom_partition_size(struct udevice *dev)
|
||||
{
|
||||
struct i2c_eeprom_partition *priv = dev_get_priv(dev);
|
||||
|
||||
return priv->size;
|
||||
}
|
||||
|
||||
static const struct i2c_eeprom_ops i2c_eeprom_partition_ops = {
|
||||
.read = i2c_eeprom_partition_read,
|
||||
.write = i2c_eeprom_partition_write,
|
||||
.size = i2c_eeprom_partition_size,
|
||||
};
|
||||
|
||||
U_BOOT_DRIVER(i2c_eeprom_partition) = {
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@ struct i2c_eeprom_ops {
|
|||
int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
|
||||
int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
|
||||
int size);
|
||||
int (*size)(struct udevice *dev);
|
||||
};
|
||||
|
||||
struct i2c_eeprom {
|
||||
|
|
@ -17,6 +18,8 @@ struct i2c_eeprom {
|
|||
unsigned long pagesize;
|
||||
/* The EEPROM's page width in bits (pagesize = 2^pagewidth) */
|
||||
unsigned pagewidth;
|
||||
/* The EEPROM's capacity in bytes */
|
||||
unsigned long size;
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
@ -43,4 +46,13 @@ int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size);
|
|||
*/
|
||||
int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
|
||||
|
||||
/*
|
||||
* i2c_eeprom_size() - get size of I2C EEPROM chip
|
||||
*
|
||||
* @dev: Chip to query
|
||||
*
|
||||
* @return +ve size in bytes on success, -ve on failure
|
||||
*/
|
||||
int i2c_eeprom_size(struct udevice *dev);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue