+static int rtl8366s_set_green_port(struct rtl8366_smi *smi, int port, int enable)
+{
+ int err;
+ u32 phyData;
+
+ if (port >= RTL8366S_NUM_PORTS)
+ return -EINVAL;
+
+ err = rtl8366s_read_phy_reg(smi, port, 0, RTL8366S_PHY_POWER_SAVING_CTRL_REG, &phyData);
+ if (err)
+ return err;
+
+ if (enable)
+ phyData |= RTL8366S_PHY_POWER_SAVING_MASK;
+ else
+ phyData &= ~RTL8366S_PHY_POWER_SAVING_MASK;
+
+ err = rtl8366s_write_phy_reg(smi, port, 0, RTL8366S_PHY_POWER_SAVING_CTRL_REG, phyData);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int rtl8366s_set_green(struct rtl8366_smi *smi, int enable)
+{
+ int err;
+ unsigned i;
+ u32 data = 0;
+
+ if (!enable) {
+ for (i = 0; i <= RTL8366S_PHY_NO_MAX; i++) {
+ rtl8366s_set_green_port(smi, i, 0);
+ }
+ }
+
+ if (enable)
+ data = (RTL8366S_GREEN_ETHERNET_TX_BIT | RTL8366S_GREEN_ETHERNET_RX_BIT);
+
+ REG_RMW(smi, RTL8366S_GREEN_ETHERNET_CTRL_REG, RTL8366S_GREEN_ETHERNET_CTRL_MASK, data);
+
+ return 0;
+}
+
+static int rtl8366s_setup(struct rtl8366_smi *smi)
+{
+ struct rtl8366_platform_data *pdata;
+ int err;
+ unsigned i;
+#ifdef CONFIG_OF
+ struct device_node *np;
+ unsigned num_initvals;
+ const __be32 *paddr;
+#endif
+
+ pdata = smi->parent->platform_data;
+ if (pdata && pdata->num_initvals && pdata->initvals) {
+ dev_info(smi->parent, "applying initvals\n");
+ for (i = 0; i < pdata->num_initvals; i++)
+ REG_WR(smi, pdata->initvals[i].reg,
+ pdata->initvals[i].val);
+ }
+
+#ifdef CONFIG_OF
+ np = smi->parent->of_node;
+
+ paddr = of_get_property(np, "realtek,initvals", &num_initvals);
+ if (paddr) {
+ dev_info(smi->parent, "applying initvals from DTS\n");
+
+ if (num_initvals < (2 * sizeof(*paddr)))
+ return -EINVAL;
+
+ num_initvals /= sizeof(*paddr);
+
+ for (i = 0; i < num_initvals - 1; i += 2) {
+ u32 reg = be32_to_cpup(paddr + i);
+ u32 val = be32_to_cpup(paddr + i + 1);
+
+ REG_WR(smi, reg, val);
+ }
+ }
+
+ if (of_property_read_bool(np, "realtek,green-ethernet-features")) {
+ dev_info(smi->parent, "activating Green Ethernet features\n");
+
+ err = rtl8366s_set_green(smi, 1);
+ if (err)
+ return err;
+
+ for (i = 0; i <= RTL8366S_PHY_NO_MAX; i++) {
+ err = rtl8366s_set_green_port(smi, i, 1);
+ if (err)
+ return err;
+ }
+ }
+#endif
+
+ /* set maximum packet length to 1536 bytes */
+ REG_RMW(smi, RTL8366S_SGCR, RTL8366S_SGCR_MAX_LENGTH_MASK,
+ RTL8366S_SGCR_MAX_LENGTH_1536);
+
+ /* enable learning for all ports */
+ REG_WR(smi, RTL8366S_SSCR0, 0);
+
+ /* enable auto ageing for all ports */
+ REG_WR(smi, RTL8366S_SSCR1, 0);
+
+ /*
+ * discard VLAN tagged packets if the port is not a member of
+ * the VLAN with which the packets is associated.
+ */
+ REG_WR(smi, RTL8366S_VLAN_MEMBERINGRESS_REG, RTL8366S_PORT_ALL);
+
+ /* don't drop packets whose DA has not been learned */
+ REG_RMW(smi, RTL8366S_SSCR2, RTL8366S_SSCR2_DROP_UNKNOWN_DA, 0);
+
+ return 0;
+}
+