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authorAkeem G. Abodunrin <akeem.g.abodunrin@intel.com>2013-01-29 10:15:26 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2013-04-18 16:39:52 -0700
commite00bf607ea0b6663f1cb206a436258d2eabe6fd7 (patch)
treeaa441b83858e74ed20805dcb6d754db8f67497a6
parentf69aa3909eeb8444f9b980f6315696c3b0bb57d5 (diff)
igb: Implement support to power sfp cage and turn on I2C
Based on original patch from Aurélien Guillaume <footplus@gmail.com> This patch adds support to turn on I2C, with sfp cage powered. CC: Aurélien Guillaume <footplus@gmail.com> Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/igb/e1000_82575.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index 12b1d848080..856364a0bbb 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -1420,9 +1420,10 @@ static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
*/
wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
- /* power on the sfp cage if present */
+ /* power on the sfp cage if present and turn on I2C */
ctrl_ext = rd32(E1000_CTRL_EXT);
ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
+ ctrl_ext |= E1000_CTRL_I2C_ENA;
wr32(E1000_CTRL_EXT, ctrl_ext);
ctrl_reg = rd32(E1000_CTRL);