ixgbe: allow reading of SFF-8472 data over i2c

[karo-tx-linux.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_phy.c

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index f4b2c0d662dd88b05a30c350ab6239254182ec37..d034cc55da3040c50a0fafb128d913495f917f35 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -1203,6 +1203,22 @@ s32 ixgbe_read_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
                                         eeprom_data);
 }
 
+/**
+ *  ixgbe_read_i2c_sff8472_generic - Reads 8 bit word over I2C interface
+ *  @hw: pointer to hardware structure
+ *  @byte_offset: byte offset at address 0xA2
+ *  @eeprom_data: value read
+ *
+ *  Performs byte read operation to SFP module's SFF-8472 data over I2C
+ **/
+s32 ixgbe_read_i2c_sff8472_generic(struct ixgbe_hw *hw, u8 byte_offset,
+                                  u8 *sff8472_data)
+{
+       return hw->phy.ops.read_i2c_byte(hw, byte_offset,
+                                        IXGBE_I2C_EEPROM_DEV_ADDR2,
+                                        sff8472_data);
+}
+
 /**
  *  ixgbe_write_i2c_eeprom_generic - Writes 8 bit EEPROM word over I2C interface
  *  @hw: pointer to hardware structure