amd/amdgpu/amdgpu_eeprom.c

35 /* EEPROM memory addresses are 19-bits long, which can
38  * "Device Type Identifier"--an I2C concept, which for EEPROM devices
39  * is hard-coded as 1010b, indicating that it is an EEPROM
43  * the EEPROM memory address. The format on the wire for EEPROM
52  * which is exactly the EEPROM memory address, or offset,
53  * in order to address up to 8 EEPROM devices on the I2C bus.
55  * For instance, a 2-Mbit I2C EEPROM part, addresses all its bytes,
67  * 2-Mbit EEPROM devices on the same bus, but see one contiguous
79  * That is, for an I2C EEPROM driver everything is controlled by
112 		/* Set the EEPROM address we want to write to/read from.  in __amdgpu_eeprom_xfer()
128 			 * As per the AT24CM02 EEPROM spec, after  in __amdgpu_eeprom_xfer()
139 			/* Reading from the EEPROM has no limitation  in __amdgpu_eeprom_xfer()
140 			 * on the number of bytes read from the EEPROM  in __amdgpu_eeprom_xfer()
156 			/* According to EEPROM specs the length of the  in __amdgpu_eeprom_xfer()
172  * amdgpu_eeprom_xfer -- Read/write from/to an I2C EEPROM device
174  * @eeprom_addr: EEPROM address from which to read/write
177  * @read: True if reading from the EEPROM, false if writing