sfc: Remove unused code for non-autoneg speed/duplex switching

The only multi-speed PHY driver using this is 10Xpress, and it does
not support non-autoneg operation.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 39 insertions, 69 deletions

diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c
index 25fb20adf4b7..231e580acc9a 100644
--- a/drivers/net/sfc/mdio_10g.c
+++ b/drivers/net/sfc/mdio_10g.c
@@ -248,7 +248,7 @@ void efx_mdio_set_mmds_lpower(struct efx_nic *efx,
 int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
 {
         struct ethtool_cmd prev;
-        u32 required;
+        bool xnp;
         int reg;
 
         efx->phy_op->get_settings(efx, &prev);
@@ -265,76 +265,46 @@ int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
                 return -EINVAL;
 
         /* Check that PHY supports these settings */
-        if (ecmd->autoneg) {
-                required = SUPPORTED_Autoneg;
-        } else if (ecmd->duplex) {
-                switch (ecmd->speed) {
-                case SPEED_10:  required = SUPPORTED_10baseT_Full;  break;
-                case SPEED_100: required = SUPPORTED_100baseT_Full; break;
-                default:        return -EINVAL;
-                }
-        } else {
-                switch (ecmd->speed) {
-                case SPEED_10:  required = SUPPORTED_10baseT_Half;  break;
-                case SPEED_100: required = SUPPORTED_100baseT_Half; break;
-                default:        return -EINVAL;
-                }
-        }
-        required |= ecmd->advertising;
-        if (required & ~prev.supported)
+        if (!ecmd->autoneg ||
+            (ecmd->advertising | SUPPORTED_Autoneg) & ~prev.supported)
                 return -EINVAL;
 
-        if (ecmd->autoneg) {
-                bool xnp = (ecmd->advertising & ADVERTISED_10000baseT_Full
-                            || EFX_WORKAROUND_13204(efx));
-
-                /* Set up the base page */
-                reg = ADVERTISE_CSMA;
-                if (ecmd->advertising & ADVERTISED_10baseT_Half)
-                        reg |= ADVERTISE_10HALF;
-                if (ecmd->advertising & ADVERTISED_10baseT_Full)
-                        reg |= ADVERTISE_10FULL;
-                if (ecmd->advertising & ADVERTISED_100baseT_Half)
-                        reg |= ADVERTISE_100HALF;
-                if (ecmd->advertising & ADVERTISED_100baseT_Full)
-                        reg |= ADVERTISE_100FULL;
-                if (xnp)
-                        reg |= ADVERTISE_RESV;
-                else if (ecmd->advertising & (ADVERTISED_1000baseT_Half |
-                                              ADVERTISED_1000baseT_Full))
-                        reg |= ADVERTISE_NPAGE;
-                reg |= mii_advertise_flowctrl(efx->wanted_fc);
-                efx_mdio_write(efx, MDIO_MMD_AN, MDIO_AN_ADVERTISE, reg);
-
-                /* Set up the (extended) next page if necessary */
-                if (efx->phy_op->set_npage_adv)
-                        efx->phy_op->set_npage_adv(efx, ecmd->advertising);
-
-                /* Enable and restart AN */
-                reg = efx_mdio_read(efx, MDIO_MMD_AN, MDIO_CTRL1);
-                reg |= MDIO_AN_CTRL1_ENABLE;
-                if (!(EFX_WORKAROUND_15195(efx) &&
-                      LOOPBACK_MASK(efx) & efx->phy_op->loopbacks))
-                        reg |= MDIO_AN_CTRL1_RESTART;
-                if (xnp)
-                        reg |= MDIO_AN_CTRL1_XNP;
-                else
-                        reg &= ~MDIO_AN_CTRL1_XNP;
-                efx_mdio_write(efx, MDIO_MMD_AN, MDIO_CTRL1, reg);
-        } else {
-                /* Disable AN */
-                efx_mdio_set_flag(efx, MDIO_MMD_AN, MDIO_CTRL1,
-                                  MDIO_AN_CTRL1_ENABLE, false);
-
-                /* Set the basic control bits */
-                reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_CTRL1);
-                reg &= ~(MDIO_CTRL1_SPEEDSEL | MDIO_CTRL1_FULLDPLX);
-                if (ecmd->speed == SPEED_100)
-                        reg |= MDIO_PMA_CTRL1_SPEED100;
-                if (ecmd->duplex)
-                        reg |= MDIO_CTRL1_FULLDPLX;
-                efx_mdio_write(efx, MDIO_MMD_PMAPMD, MDIO_CTRL1, reg);
-        }
+        xnp = (ecmd->advertising & ADVERTISED_10000baseT_Full
+               || EFX_WORKAROUND_13204(efx));
+
+        /* Set up the base page */
+        reg = ADVERTISE_CSMA;
+        if (ecmd->advertising & ADVERTISED_10baseT_Half)
+                reg |= ADVERTISE_10HALF;
+        if (ecmd->advertising & ADVERTISED_10baseT_Full)
+                reg |= ADVERTISE_10FULL;
+        if (ecmd->advertising & ADVERTISED_100baseT_Half)
+                reg |= ADVERTISE_100HALF;
+        if (ecmd->advertising & ADVERTISED_100baseT_Full)
+                reg |= ADVERTISE_100FULL;
+        if (xnp)
+                reg |= ADVERTISE_RESV;
+        else if (ecmd->advertising & (ADVERTISED_1000baseT_Half |
+                                      ADVERTISED_1000baseT_Full))
+                reg |= ADVERTISE_NPAGE;
+        reg |= mii_advertise_flowctrl(efx->wanted_fc);
+        efx_mdio_write(efx, MDIO_MMD_AN, MDIO_AN_ADVERTISE, reg);
+
+        /* Set up the (extended) next page if necessary */
+        if (efx->phy_op->set_npage_adv)
+                efx->phy_op->set_npage_adv(efx, ecmd->advertising);
+
+        /* Enable and restart AN */
+        reg = efx_mdio_read(efx, MDIO_MMD_AN, MDIO_CTRL1);
+        reg |= MDIO_AN_CTRL1_ENABLE;
+        if (!(EFX_WORKAROUND_15195(efx) &&
+              LOOPBACK_MASK(efx) & efx->phy_op->loopbacks))
+                reg |= MDIO_AN_CTRL1_RESTART;
+        if (xnp)
+                reg |= MDIO_AN_CTRL1_XNP;
+        else
+                reg &= ~MDIO_AN_CTRL1_XNP;
+        efx_mdio_write(efx, MDIO_MMD_AN, MDIO_CTRL1, reg);
 
         return 0;
 }