diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2016-11-10 17:10:36 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-13 00:56:26 -0500 |
| commit | 5ab1dcd58597c04f6d50980c3d5f3c2518301b31 (patch) | |
| tree | a96707a358bcafd5965b6d0a96a25c643d1f6b7b /drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | |
| parent | e78332b2285d9fe631a093fc8ca2b604c48c33e6 (diff) | |
amd-xgbe: Add I2C support for sideband communication
Add support to initialize and use the I2C controller within the hardware
in order to perform sideband communication, e.g. determine the SFP media
type that is installed.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c index 7ae0abcd1bd5..4bfe5c26058a 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c @@ -710,11 +710,20 @@ static void xgbe_phy_stop(struct xgbe_prv_data *pdata) { /* Power off the PHY */ xgbe_phy_power_off(pdata); + + /* Stop the I2C controller */ + pdata->i2c_if.i2c_stop(pdata); } static int xgbe_phy_start(struct xgbe_prv_data *pdata) { struct xgbe_phy_data *phy_data = pdata->phy_data; + int ret; + + /* Start the I2C controller */ + ret = pdata->i2c_if.i2c_start(pdata); + if (ret) + return ret; /* Start in highest supported mode */ xgbe_phy_set_mode(pdata, phy_data->start_mode); @@ -744,6 +753,7 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata) { struct xgbe_phy_data *phy_data; unsigned int reg; + int ret; /* Check if enabled */ if (!xgbe_phy_port_enabled(pdata)) { @@ -751,6 +761,11 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata) return -ENODEV; } + /* Initialize the I2C controller */ + ret = pdata->i2c_if.i2c_init(pdata); + if (ret) + return ret; + phy_data = devm_kzalloc(pdata->dev, sizeof(*phy_data), GFP_KERNEL); if (!phy_data) return -ENOMEM; |