misc: i2c_eeprom: Add fallbacks
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>
diff --git a/include/i2c_eeprom.h b/include/i2c_eeprom.h
index 90fdb25..32dcb03 100644
--- a/include/i2c_eeprom.h
+++ b/include/i2c_eeprom.h
@@ -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 @@
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_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