Signed-off-by: Jonas Karlman <jo...@kwiboo.se>
---
Changes in v3:
- Add i2c_eeprom_{read,write} functions
Changes in v2: None
drivers/misc/i2c_eeprom.c | 32 ++++++++++++++++++++++++++------
include/i2c_eeprom.h | 24 ++++++++++++++++++++++++
2 files changed, 50 insertions(+), 6 deletions(-)
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c
index c9f4174bad..da6e2b05f7 100644
--- a/drivers/misc/i2c_eeprom.c
+++ b/drivers/misc/i2c_eeprom.c
@@ -10,21 +10,41 @@
#include <i2c.h>
#include <i2c_eeprom.h>
-static int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf,
- int size)
+int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
+{
+ const struct i2c_eeprom_ops *ops = device_get_ops(dev);
+
+ if (!ops->read)
+ return -ENOSYS;
+
+ return ops->read(dev, offset, buf, size);
+}
+
+int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size)
+{
+ const struct i2c_eeprom_ops *ops = device_get_ops(dev);
+
+ if (!ops->write)
+ return -ENOSYS;
+
+ return ops->write(dev, offset, buf, size);
+}
+
+static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
+ int size)
{
return dm_i2c_read(dev, offset, buf, size);
}
-static int i2c_eeprom_write(struct udevice *dev, int offset,
- const uint8_t *buf, int size)
+static int i2c_eeprom_std_write(struct udevice *dev, int offset,
+ const uint8_t *buf, int size)
{
return -ENODEV;
}
struct i2c_eeprom_ops i2c_eeprom_std_ops = {
- .read = i2c_eeprom_read,
- .write = i2c_eeprom_write,
+ .read = i2c_eeprom_std_read,
+ .write = i2c_eeprom_std_write,
};
static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
diff --git a/include/i2c_eeprom.h b/include/i2c_eeprom.h
index 0452892812..bb5c6b118b 100644
--- a/include/i2c_eeprom.h
+++ b/include/i2c_eeprom.h
@@ -20,4 +20,28 @@ struct i2c_eeprom {
unsigned pagewidth;
};
+/*
+ * i2c_eeprom_read() - read bytes from an I2C EEPROM chip
+ *
+ * @dev: Chip to read from
+ * @offset: Offset within chip to start reading
+ * @buf: Place to put data
+ * @size: Number of bytes to read
+ *
+ * @return 0 on success, -ve on failure
+ */
+int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size);
+
+/*
+ * i2c_eeprom_write() - write bytes to an I2C EEPROM chip
+ *
+ * @dev: Chip to write to
+ * @offset: Offset within chip to start writing
+ * @buf: Buffer containing data to write
+ * @size: Number of bytes to write
+ *
+ * @return 0 on success, -ve on failure
+ */
+int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
+
#endif
--
2.11.0
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