target/linux/generic/backport-5.15/703-06-v5.18-net-dsa-add-support-for-phylink-mac_select_pcs.patch

   1 From bde018222c6b084ac32933a9f933581dd83da18e Mon Sep 17 00:00:00 2001
   2 From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
   3 Date: Thu, 17 Feb 2022 18:30:35 +0000
   4 Subject: [PATCH] net: dsa: add support for phylink mac_select_pcs()
   5
   6 Add DSA support for the phylink mac_select_pcs() method so DSA drivers
   7 can return provide phylink with the appropriate PCS for the PHY
   8 interface mode.
   9
  10 Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
  11 Signed-off-by: David S. Miller <davem@davemloft.net>
  12 ---
  13  include/net/dsa.h |  3 +++
  14  net/dsa/port.c    | 15 +++++++++++++++
  15  2 files changed, 18 insertions(+)
  16
  17 --- a/include/net/dsa.h
  18 +++ b/include/net/dsa.h
  19 @@ -631,6 +631,9 @@ struct dsa_switch_ops {
  20         void    (*phylink_validate)(struct dsa_switch *ds, int port,
  21                                     unsigned long *supported,
  22                                     struct phylink_link_state *state);
  23 +       struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds,
  24 +                                                     int port,
  25 +                                                     phy_interface_t iface);
  26         int     (*phylink_mac_link_state)(struct dsa_switch *ds, int port,
  27                                           struct phylink_link_state *state);
  28         void    (*phylink_mac_config)(struct dsa_switch *ds, int port,
  29 --- a/net/dsa/port.c
  30 +++ b/net/dsa/port.c
  31 @@ -1028,6 +1028,20 @@ static void dsa_port_phylink_mac_pcs_get
  32         }
  33  }
  34
  35 +static struct phylink_pcs *
  36 +dsa_port_phylink_mac_select_pcs(struct phylink_config *config,
  37 +                               phy_interface_t interface)
  38 +{
  39 +       struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
  40 +       struct dsa_switch *ds = dp->ds;
  41 +       struct phylink_pcs *pcs = NULL;
  42 +
  43 +       if (ds->ops->phylink_mac_select_pcs)
  44 +               pcs = ds->ops->phylink_mac_select_pcs(ds, dp->index, interface);
  45 +
  46 +       return pcs;
  47 +}
  48 +
  49  static void dsa_port_phylink_mac_config(struct phylink_config *config,
  50                                         unsigned int mode,
  51                                         const struct phylink_link_state *state)
  52 @@ -1094,6 +1108,7 @@ static void dsa_port_phylink_mac_link_up
  53
  54  static const struct phylink_mac_ops dsa_port_phylink_mac_ops = {
  55         .validate = dsa_port_phylink_validate,
  56 +       .mac_select_pcs = dsa_port_phylink_mac_select_pcs,
  57         .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state,
  58         .mac_config = dsa_port_phylink_mac_config,
  59         .mac_an_restart = dsa_port_phylink_mac_an_restart,