target/linux/generic/backport-6.1/706-v6.6-01-net-phy-at803x-support-qca8081-genphy_c45_pma_read_a.patch

   1 From 8b8bc13d89a7d23d14b0e041c73f037c9db997b1 Mon Sep 17 00:00:00 2001
   2 From: Luo Jie <quic_luoj@quicinc.com>
   3 Date: Sun, 16 Jul 2023 16:49:19 +0800
   4 Subject: [PATCH 1/6] net: phy: at803x: support qca8081
   5  genphy_c45_pma_read_abilities
   6
   7 qca8081 PHY supports to use genphy_c45_pma_read_abilities for
   8 getting the PHY features supported except for the autoneg ability
   9
  10 but autoneg ability exists in MDIO_STAT1 instead of MMD7.1, add it
  11 manually after calling genphy_c45_pma_read_abilities.
  12
  13 Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
  14 Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
  15 Signed-off-by: David S. Miller <davem@davemloft.net>
  16 ---
  17  drivers/net/phy/at803x.c | 28 ++++++++++++++++++----------
  18  1 file changed, 18 insertions(+), 10 deletions(-)
  19
  20 --- a/drivers/net/phy/at803x.c
  21 +++ b/drivers/net/phy/at803x.c
  22 @@ -902,15 +902,6 @@ static int at803x_get_features(struct ph
  23         if (err)
  24                 return err;
  25
  26 -       if (phydev->drv->phy_id == QCA8081_PHY_ID) {
  27 -               err = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_NG_EXTABLE);
  28 -               if (err < 0)
  29 -                       return err;
  30 -
  31 -               linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported,
  32 -                               err & MDIO_PMA_NG_EXTABLE_2_5GBT);
  33 -       }
  34 -
  35         if (phydev->drv->phy_id != ATH8031_PHY_ID)
  36                 return 0;
  37
  38 @@ -1996,6 +1987,23 @@ static int qca808x_cable_test_get_status
  39         return 0;
  40  }
  41
  42 +static int qca808x_get_features(struct phy_device *phydev)
  43 +{
  44 +       int ret;
  45 +
  46 +       ret = genphy_c45_pma_read_abilities(phydev);
  47 +       if (ret)
  48 +               return ret;
  49 +
  50 +       /* The autoneg ability is not existed in bit3 of MMD7.1,
  51 +        * but it is supported by qca808x PHY, so we add it here
  52 +        * manually.
  53 +        */
  54 +       linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);
  55 +
  56 +       return 0;
  57 +}
  58 +
  59  static struct phy_driver at803x_driver[] = {
  60  {
  61         /* Qualcomm Atheros AR8035 */
  62 @@ -2163,7 +2171,7 @@ static struct phy_driver at803x_driver[]
  63         .set_tunable            = at803x_set_tunable,
  64         .set_wol                = at803x_set_wol,
  65         .get_wol                = at803x_get_wol,
  66 -       .get_features           = at803x_get_features,
  67 +       .get_features           = qca808x_get_features,
  68         .config_aneg            = at803x_config_aneg,
  69         .suspend                = genphy_suspend,
  70         .resume                 = genphy_resume,