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misc: i2c_eeprom: add size query

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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
2019-10-28 18:29:06 +00:00
committed by Heiko Schocher
parent 1a59cb426d
commit 033e18b47b
2 changed files with 138 additions and 19 deletions
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12
include/i2c_eeprom.h
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@@ -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