target/linux/generic/backport-5.15/793-v6.6-net-pcs-lynxi-implement-pcs_disable-op.patch

   1 From e4ccdfb78a47132f2d215658aab8902fc457c4b4 Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Fri, 18 Aug 2023 04:07:46 +0100
   4 Subject: [PATCH 082/125] net: pcs: lynxi: implement pcs_disable op
   5
   6 When switching from 10GBase-R/5GBase-R/USXGMII to one of the interface
   7 modes provided by mtk-pcs-lynxi we need to make sure to always perform
   8 a full configuration of the PHYA.
   9
  10 Implement pcs_disable op which resets the stored interface mode to
  11 PHY_INTERFACE_MODE_NA to trigger a full reconfiguration once the LynxI
  12 PCS driver had previously been deselected in favor of another PCS
  13 driver such as the to-be-added driver for the USXGMII PCS found in
  14 MT7988.
  15
  16 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  17 Link: https://lore.kernel.org/r/f23d1a60d2c9d2fb72e32dcb0eaa5f7e867a3d68.1692327891.git.daniel@makrotopia.org
  18 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  19 ---
  20  drivers/net/pcs/pcs-mtk-lynxi.c | 8 ++++++++
  21  1 file changed, 8 insertions(+)
  22
  23 --- a/drivers/net/pcs/pcs-mtk-lynxi.c
  24 +++ b/drivers/net/pcs/pcs-mtk-lynxi.c
  25 @@ -241,11 +241,19 @@ static void mtk_pcs_lynxi_link_up(struct
  26         }
  27  }
  28
  29 +static void mtk_pcs_lynxi_disable(struct phylink_pcs *pcs)
  30 +{
  31 +       struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs);
  32 +
  33 +       mpcs->interface = PHY_INTERFACE_MODE_NA;
  34 +}
  35 +
  36  static const struct phylink_pcs_ops mtk_pcs_lynxi_ops = {
  37         .pcs_get_state = mtk_pcs_lynxi_get_state,
  38         .pcs_config = mtk_pcs_lynxi_config,
  39         .pcs_an_restart = mtk_pcs_lynxi_restart_an,
  40         .pcs_link_up = mtk_pcs_lynxi_link_up,
  41 +       .pcs_disable = mtk_pcs_lynxi_disable,
  42  };
  43
  44  struct phylink_pcs *mtk_pcs_lynxi_create(struct device *dev,