Signed-off-by: Jonas Karlman jonas@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