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misc: i2c_eeprom: Add fallbacks

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Add some fallback functions for when i2c_eeprom is disabled. This allows
code to reference i2c_eeprom_* functions without needing to check
whether support has been compiled in.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
This commit is contained in:
Sean Anderson 2022-05-05 13:11:38 -04:00 committed by Tom Rini
parent dda3b38920
commit 42f477f0ab
1 changed files with 24 additions and 0 deletions
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24
include/i2c_eeprom.h
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@ -6,6 +6,8 @@
#ifndef __I2C_EEPROM
#define __I2C_EEPROM
struct udevice;
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,
@ -20,6 +22,7 @@ struct i2c_eeprom {
unsigned long size;
};
#if CONFIG_IS_ENABLED(I2C_EEPROM)
/*
* i2c_eeprom_read() - read bytes from an I2C EEPROM chip
*
@ -54,4 +57,25 @@ int i2c_eeprom_write(struct udevice *dev, int offset, const uint8_t *buf,
*/
int i2c_eeprom_size(struct udevice *dev);
#else /* !I2C_EEPROM */
static inline int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf,
int size)
{
return -ENOSYS;
}
static inline int i2c_eeprom_write(struct udevice *dev, int offset,
const uint8_t *buf, int size)
{
return -ENOSYS;
}
static inline int i2c_eeprom_size(struct udevice *dev)
{
return -ENOSYS;
}
#endif /* I2C_EEPROM */
#endif