diff options
Diffstat (limited to 'include/i2c.h')
| -rw-r--r-- | include/i2c.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h index 1384697..dea0644 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -28,6 +28,19 @@ struct i2c_bus { void (*free_req)(struct i2c_request *req); }; +/* + * I2C specific OPAL error codes: + * + * OPAL_I2C_TIMEOUT I2C request timed out + * OPAL_I2C_INVALID_CMD New command given when old not completed yet + * OPAL_I2C_LBUS_PARITY Local bus parity error + * OPAL_I2C_BKEND_OVERRUN Writing/reading into full/empty fifo respectively + * OPAL_I2C_BKEND_ACCESS Writing/reading more data than requested + * OPAL_I2C_ARBT_LOST I2C bus is held by some other master + * OPAL_I2C_NACK_RCVD Slave is not responding back with the ACK + * OPAL_I2C_STOP_ERR Did not able to send the STOP condtion on bus + */ + struct i2c_request { struct list_node link; struct i2c_bus *bus; @@ -37,6 +50,7 @@ struct i2c_request { SMBUS_READ, /* SMBUS protocol read from the device */ SMBUS_WRITE, /* SMBUS protocol write to the device */ } op; + int result; /* OPAL i2c error code */ uint32_t dev_addr; /* Slave device address */ uint32_t offset_bytes; /* Internal device offset */ uint32_t offset; /* Internal device offset */ |