diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/i2c.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h index 6fd73fae4c..d794057f4b 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -124,6 +124,27 @@ int dm_i2c_probe(struct udevice *bus, uint chip_addr, uint chip_flags, struct udevice **devp); /** + * dm_i2c_reg_read() - Read a value from an I2C register + * + * This reads a single value from the given address in an I2C chip + * + * @addr: Address to read from + * @return value read, or -ve on error + */ +int dm_i2c_reg_read(struct udevice *dev, uint offset); + +/** + * dm_i2c_reg_write() - Write a value to an I2C register + * + * This writes a single value to the given address in an I2C chip + * + * @addr: Address to write to + * @val: Value to write (normally a byte) + * @return 0 on success, -ve on error + */ +int dm_i2c_reg_write(struct udevice *dev, uint offset, unsigned int val); + +/** * dm_i2c_set_bus_speed() - set the speed of a bus * * @bus: Bus to adjust |