target/linux/generic/patches-3.18/074-bgmac-register-fixed-PHY-for-ARM-BCM470X-BCM5301X-ch.patch

   1 From c25b23b8a387e7d31f7a74af8e37b61e9e6ebb21 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Fri, 20 Mar 2015 23:14:31 +0100
   4 Subject: [PATCH] bgmac: register fixed PHY for ARM BCM470X / BCM5301X chipsets
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 On ARM SoCs with bgmac Ethernet hardware we don't have any normal PHY.
  10 There is always a switch attached but it's not even controlled over MDIO
  11 like in case of MIPS devices.
  12 We need a fixed PHY to be able to send/receive packets from the switch.
  13
  14 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  15 Signed-off-by: David S. Miller <davem@davemloft.net>
  16 ---
  17  drivers/net/ethernet/broadcom/bgmac.c | 34 ++++++++++++++++++++++++++++++++++
  18  1 file changed, 34 insertions(+)
  19
  20 --- a/drivers/net/ethernet/broadcom/bgmac.c
  21 +++ b/drivers/net/ethernet/broadcom/bgmac.c
  22 @@ -14,6 +14,7 @@
  23  #include <linux/etherdevice.h>
  24  #include <linux/mii.h>
  25  #include <linux/phy.h>
  26 +#include <linux/phy_fixed.h>
  27  #include <linux/interrupt.h>
  28  #include <linux/dma-mapping.h>
  29  #include <bcm47xx_nvram.h>
  30 @@ -1330,13 +1331,46 @@ static void bgmac_adjust_link(struct net
  31         }
  32  }
  33
  34 +static int bgmac_fixed_phy_register(struct bgmac *bgmac)
  35 +{
  36 +       struct fixed_phy_status fphy_status = {
  37 +               .link = 1,
  38 +               .speed = SPEED_1000,
  39 +               .duplex = DUPLEX_FULL,
  40 +       };
  41 +       struct phy_device *phy_dev;
  42 +       int err;
  43 +
  44 +       phy_dev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
  45 +       if (!phy_dev || IS_ERR(phy_dev)) {
  46 +               bgmac_err(bgmac, "Failed to register fixed PHY device\n");
  47 +               return -ENODEV;
  48 +       }
  49 +
  50 +       err = phy_connect_direct(bgmac->net_dev, phy_dev, bgmac_adjust_link,
  51 +                                PHY_INTERFACE_MODE_MII);
  52 +       if (err) {
  53 +               bgmac_err(bgmac, "Connecting PHY failed\n");
  54 +               return err;
  55 +       }
  56 +
  57 +       bgmac->phy_dev = phy_dev;
  58 +
  59 +       return err;
  60 +}
  61 +
  62  static int bgmac_mii_register(struct bgmac *bgmac)
  63  {
  64 +       struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;
  65         struct mii_bus *mii_bus;
  66         struct phy_device *phy_dev;
  67         char bus_id[MII_BUS_ID_SIZE + 3];
  68         int i, err = 0;
  69
  70 +       if (ci->id == BCMA_CHIP_ID_BCM4707 ||
  71 +           ci->id == BCMA_CHIP_ID_BCM53018)
  72 +               return bgmac_fixed_phy_register(bgmac);
  73 +
  74         mii_bus = mdiobus_alloc();
  75         if (!mii_bus)
  76                 return -ENOMEM;