From: Akeem G. Abodunrin Date: Tue, 29 Jan 2013 10:15:26 +0000 (+0000) Subject: igb: Implement support to power sfp cage and turn on I2C X-Git-Tag: firefly_0821_release~3680^2~548^2~98^2~9 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e00bf607ea0b6663f1cb206a436258d2eabe6fd7;p=firefly-linux-kernel-4.4.55.git igb: Implement support to power sfp cage and turn on I2C Based on original patch from Aurélien Guillaume This patch adds support to turn on I2C, with sfp cage powered. CC: Aurélien Guillaume Signed-off-by: Akeem G Abodunrin Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c index 12b1d8480808..856364a0bbb2 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);