> +/**
> + * sw_r_phy - read data from PHY register
> + * @sw: The switch instance.
> + * @phy: PHY address to read.
> + * @reg: PHY register to read.
> + * @val: Buffer to store the read data.
> + *
> + * This routine reads data from the PHY register.
> + */
> +static void sw_r_phy(struct ksz_device *sw, u16 phy, u16 reg, u16 *val)
> +{
> + u8 ctrl;
> + u8 restart;
> + u8 link;
> + u8 speed;
> + u8 force;
> + u8 p = phy;
> + u16 data = 0;
> +
> + switch (reg) {
> + case PHY_REG_CTRL:
> + ksz_pread8(sw, p, P_LOCAL_CTRL, &ctrl);
> + ksz_pread8(sw, p, P_NEG_RESTART_CTRL, &restart);
> + ksz_pread8(sw, p, P_SPEED_STATUS, &speed);
> + ksz_pread8(sw, p, P_FORCE_CTRL, &force);
> + if (restart & PORT_PHY_LOOPBACK)
> + data |= PHY_LOOPBACK;
> + if (force & PORT_FORCE_100_MBIT)
> + data |= PHY_SPEED_100MBIT;
> + if (!(force & PORT_AUTO_NEG_DISABLE))
> + data |= PHY_AUTO_NEG_ENABLE;
> + if (restart & PORT_POWER_DOWN)
> + data |= PHY_POWER_DOWN;
> + if (restart & PORT_AUTO_NEG_RESTART)
> + data |= PHY_AUTO_NEG_RESTART;
> + if (force & PORT_FORCE_FULL_DUPLEX)
> + data |= PHY_FULL_DUPLEX;
> + if (speed & PORT_HP_MDIX)
> + data |= PHY_HP_MDIX;
> + if (restart & PORT_FORCE_MDIX)
> + data |= PHY_FORCE_MDIX;
> + if (restart & PORT_AUTO_MDIX_DISABLE)
> + data |= PHY_AUTO_MDIX_DISABLE;
> + if (restart & PORT_TX_DISABLE)
> + data |= PHY_TRANSMIT_DISABLE;
> + if (restart & PORT_LED_OFF)
> + data |= PHY_LED_DISABLE;
> + break;
> + case PHY_REG_STATUS:
> + ksz_pread8(sw, p, P_LINK_STATUS, &link);
> + ksz_pread8(sw, p, P_SPEED_STATUS, &speed);
> + data = PHY_100BTX_FD_CAPABLE |
> + PHY_100BTX_CAPABLE |
> + PHY_10BT_FD_CAPABLE |
> + PHY_10BT_CAPABLE |
> + PHY_AUTO_NEG_CAPABLE;
> + if (link & PORT_AUTO_NEG_COMPLETE)
> + data |= PHY_AUTO_NEG_ACKNOWLEDGE;
> + if (link & PORT_STAT_LINK_GOOD)
> + data |= PHY_LINK_STATUS;
> + break;
> + case PHY_REG_ID_1:
> + data = KSZ8895_ID_HI;
> + break;
> + case PHY_REG_ID_2:
> + data = KSZ8895_ID_LO;
> + break;
According to the datasheet, the PHY has the normal ID registers,
which have the value 0x0022, 0x1450. So it should be possible to have
a standard PHY driver in drivers/net/phy.
In fact, the IDs suggest it is a micrel phy, and 1430, 1435 are
already supported. So it could be you only need minor modifications to
the micrel.c.
Andrew
