diff options
| -rw-r--r-- | include/i2c.h | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/include/i2c.h b/include/i2c.h index e1ad8d8..4c0e263 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -74,6 +74,49 @@ struct dm_i2c_bus { int speed_hz; }; +/* + * Not all of these flags are implemented in the U-Boot API + */ +enum dm_i2c_msg_flags { + I2C_M_TEN = 0x0010, /* ten-bit chip address */ + I2C_M_RD = 0x0001, /* read data, from slave to master */ + I2C_M_STOP = 0x8000, /* send stop after this message */ + I2C_M_NOSTART = 0x4000, /* no start before this message */ + I2C_M_REV_DIR_ADDR = 0x2000, /* invert polarity of R/W bit */ + I2C_M_IGNORE_NAK = 0x1000, /* continue after NAK */ + I2C_M_NO_RD_ACK = 0x0800, /* skip the Ack bit on reads */ + I2C_M_RECV_LEN = 0x0400, /* length is first received byte */ +}; + +/** + * struct i2c_msg - an I2C message + * + * @addr: Slave address + * @flags: Flags (see enum dm_i2c_msg_flags) + * @len: Length of buffer in bytes, may be 0 for a probe + * @buf: Buffer to send/receive, or NULL if no data + */ +struct i2c_msg { + uint addr; + uint flags; + uint len; + u8 *buf; +}; + +/** + * struct i2c_msg_list - a list of I2C messages + * + * This is called i2c_rdwr_ioctl_data in Linux but the name does not seem + * appropriate in U-Boot. + * + * @msg: Pointer to i2c_msg array + * @nmsgs: Number of elements in the array + */ +struct i2c_msg_list { + struct i2c_msg *msgs; + uint nmsgs; +}; + /** * dm_i2c_read() - read bytes from an I2C chip * @@ -294,49 +337,6 @@ void i2c_reg_write(uint8_t addr, uint8_t reg, uint8_t val); #endif -/* - * Not all of these flags are implemented in the U-Boot API - */ -enum dm_i2c_msg_flags { - I2C_M_TEN = 0x0010, /* ten-bit chip address */ - I2C_M_RD = 0x0001, /* read data, from slave to master */ - I2C_M_STOP = 0x8000, /* send stop after this message */ - I2C_M_NOSTART = 0x4000, /* no start before this message */ - I2C_M_REV_DIR_ADDR = 0x2000, /* invert polarity of R/W bit */ - I2C_M_IGNORE_NAK = 0x1000, /* continue after NAK */ - I2C_M_NO_RD_ACK = 0x0800, /* skip the Ack bit on reads */ - I2C_M_RECV_LEN = 0x0400, /* length is first received byte */ -}; - -/** - * struct i2c_msg - an I2C message - * - * @addr: Slave address - * @flags: Flags (see enum dm_i2c_msg_flags) - * @len: Length of buffer in bytes, may be 0 for a probe - * @buf: Buffer to send/receive, or NULL if no data - */ -struct i2c_msg { - uint addr; - uint flags; - uint len; - u8 *buf; -}; - -/** - * struct i2c_msg_list - a list of I2C messages - * - * This is called i2c_rdwr_ioctl_data in Linux but the name does not seem - * appropriate in U-Boot. - * - * @msg: Pointer to i2c_msg array - * @nmsgs: Number of elements in the array - */ -struct i2c_msg_list { - struct i2c_msg *msgs; - uint nmsgs; -}; - /** * struct dm_i2c_ops - driver operations for I2C uclass * |