target/linux/generic/patches-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch

   1 --- a/drivers/net/phy/at803x.c
   2 +++ b/drivers/net/phy/at803x.c
   3 @@ -12,12 +12,14 @@
   4   */
   5
   6  #include <linux/phy.h>
   7 +#include <linux/mdio.h>
   8  #include <linux/module.h>
   9  #include <linux/string.h>
  10  #include <linux/netdevice.h>
  11  #include <linux/etherdevice.h>
  12  #include <linux/of_gpio.h>
  13  #include <linux/gpio/consumer.h>
  14 +#include <linux/platform_data/phy-at803x.h>
  15
  16  #define AT803X_INTR_ENABLE                     0x12
  17  #define AT803X_INTR_ENABLE_AUTONEG_ERR         BIT(15)
  18 @@ -45,6 +47,11 @@
  19  #define AT803X_REG_CHIP_CONFIG                 0x1f
  20  #define AT803X_BT_BX_REG_SEL                   0x8000
  21
  22 +#define AT803X_PCS_SMART_EEE_CTRL3                     0x805D
  23 +#define AT803X_SMART_EEE_CTRL3_LPI_TX_DELAY_SEL_MASK   0x3
  24 +#define AT803X_SMART_EEE_CTRL3_LPI_TX_DELAY_SEL_SHIFT  12
  25 +#define AT803X_SMART_EEE_CTRL3_LPI_EN                  BIT(8)
  26 +
  27  #define AT803X_DEBUG_ADDR                      0x1D
  28  #define AT803X_DEBUG_DATA                      0x1E
  29
  30 @@ -72,6 +79,7 @@ MODULE_LICENSE("GPL");
  31  struct at803x_priv {
  32         bool phy_reset:1;
  33         struct gpio_desc *gpiod_reset;
  34 +       int prev_speed;
  35  };
  36
  37  struct at803x_context {
  38 @@ -276,8 +284,16 @@ does_not_require_reset_workaround:
  39         return 0;
  40  }
  41
  42 +static void at803x_disable_smarteee(struct phy_device *phydev)
  43 +{
  44 +       phy_write_mmd(phydev, MDIO_MMD_PCS, AT803X_PCS_SMART_EEE_CTRL3,
  45 +               1 << AT803X_SMART_EEE_CTRL3_LPI_TX_DELAY_SEL_SHIFT);
  46 +       phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
  47 +}
  48 +
  49  static int at803x_config_init(struct phy_device *phydev)
  50  {
  51 +       struct at803x_platform_data *pdata;
  52         int ret;
  53
  54         ret = genphy_config_init(phydev);
  55 @@ -298,6 +314,26 @@ static int at803x_config_init(struct phy
  56                         return ret;
  57         }
  58
  59 +       pdata = dev_get_platdata(&phydev->mdio.dev);
  60 +       if (pdata) {
  61 +               if (pdata->disable_smarteee)
  62 +                       at803x_disable_smarteee(phydev);
  63 +
  64 +               if (pdata->enable_rgmii_rx_delay)
  65 +                       at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0, 0,
  66 +                               AT803X_DEBUG_RX_CLK_DLY_EN);
  67 +               else
  68 +                       at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0,
  69 +                               AT803X_DEBUG_RX_CLK_DLY_EN, 0);
  70 +
  71 +               if (pdata->enable_rgmii_tx_delay)
  72 +                       at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, 0,
  73 +                               AT803X_DEBUG_TX_CLK_DLY_EN);
  74 +               else
  75 +                       at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5,
  76 +                               AT803X_DEBUG_TX_CLK_DLY_EN, 0);
  77 +       }
  78 +
  79         return 0;
  80  }
  81
  82 @@ -335,6 +371,8 @@ static int at803x_config_intr(struct phy
  83  static void at803x_link_change_notify(struct phy_device *phydev)
  84  {
  85         struct at803x_priv *priv = phydev->priv;
  86 +       struct at803x_platform_data *pdata;
  87 +       pdata = dev_get_platdata(&phydev->mdio.dev);
  88
  89         /*
  90          * Conduct a hardware reset for AT8030/2 every time a link loss is
  91 @@ -363,6 +401,24 @@ static void at803x_link_change_notify(st
  92         } else {
  93                 priv->phy_reset = false;
  94         }
  95 +       if (pdata && pdata->fixup_rgmii_tx_delay &&
  96 +           phydev->speed != priv->prev_speed) {
  97 +               switch (phydev->speed) {
  98 +               case SPEED_10:
  99 +               case SPEED_100:
 100 +                       at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, 0,
 101 +                               AT803X_DEBUG_TX_CLK_DLY_EN);
 102 +                       break;
 103 +               case SPEED_1000:
 104 +                       at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5,
 105 +                               AT803X_DEBUG_TX_CLK_DLY_EN, 0);
 106 +                       break;
 107 +               default:
 108 +                       break;
 109 +               }
 110 +
 111 +               priv->prev_speed = phydev->speed;
 112 +       }
 113  }
 114
 115  static int at803x_aneg_done(struct phy_device *phydev)
 116 --- /dev/null
 117 +++ b/include/linux/platform_data/phy-at803x.h
 118 @@ -0,0 +1,11 @@
 119 +#ifndef _PHY_AT803X_PDATA_H
 120 +#define _PHY_AT803X_PDATA_H
 121 +
 122 +struct at803x_platform_data {
 123 +       int disable_smarteee:1;
 124 +       int enable_rgmii_tx_delay:1;
 125 +       int enable_rgmii_rx_delay:1;
 126 +       int fixup_rgmii_tx_delay:1;
 127 +};
 128 +
 129 +#endif /* _PHY_AT803X_PDATA_H */