net: stmmac: dwmac-rk: support RK3366 GMAC driver

[firefly-linux-kernel-4.4.55.git] / drivers / net / ethernet / stmicro / stmmac / dwmac-rk.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 0cd3ecff768b3df5a3dbd7bdf2b73e06d81affff..b5669282f0206465a0e6a14e0be7ae753b275f59 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -184,6 +184,118 @@ static const struct rk_gmac_ops rk3288_ops = {
        .set_rmii_speed = rk3288_set_rmii_speed,
 };
 
+#define RK3366_GRF_SOC_CON6    0x0418
+#define RK3366_GRF_SOC_CON7    0x041c
+
+/* RK3366_GRF_SOC_CON6 */
+#define RK3366_GMAC_PHY_INTF_SEL_RGMII (GRF_BIT(9) | GRF_CLR_BIT(10) | \
+                                        GRF_CLR_BIT(11))
+#define RK3366_GMAC_PHY_INTF_SEL_RMII  (GRF_CLR_BIT(9) | GRF_CLR_BIT(10) | \
+                                        GRF_BIT(11))
+#define RK3366_GMAC_FLOW_CTRL          GRF_BIT(8)
+#define RK3366_GMAC_FLOW_CTRL_CLR      GRF_CLR_BIT(8)
+#define RK3366_GMAC_SPEED_10M          GRF_CLR_BIT(7)
+#define RK3366_GMAC_SPEED_100M         GRF_BIT(7)
+#define RK3366_GMAC_RMII_CLK_25M       GRF_BIT(3)
+#define RK3366_GMAC_RMII_CLK_2_5M      GRF_CLR_BIT(3)
+#define RK3366_GMAC_CLK_125M           (GRF_CLR_BIT(4) | GRF_CLR_BIT(5))
+#define RK3366_GMAC_CLK_25M            (GRF_BIT(4) | GRF_BIT(5))
+#define RK3366_GMAC_CLK_2_5M           (GRF_CLR_BIT(4) | GRF_BIT(5))
+#define RK3366_GMAC_RMII_MODE          GRF_BIT(6)
+#define RK3366_GMAC_RMII_MODE_CLR      GRF_CLR_BIT(6)
+
+/* RK3366_GRF_SOC_CON7 */
+#define RK3366_GMAC_TXCLK_DLY_ENABLE   GRF_BIT(7)
+#define RK3366_GMAC_TXCLK_DLY_DISABLE  GRF_CLR_BIT(7)
+#define RK3366_GMAC_RXCLK_DLY_ENABLE   GRF_BIT(15)
+#define RK3366_GMAC_RXCLK_DLY_DISABLE  GRF_CLR_BIT(15)
+#define RK3366_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 8)
+#define RK3366_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
+
+static void rk3366_set_to_rgmii(struct rk_priv_data *bsp_priv,
+                               int tx_delay, int rx_delay)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
+               return;
+       }
+
+       regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                    RK3366_GMAC_PHY_INTF_SEL_RGMII |
+                    RK3366_GMAC_RMII_MODE_CLR);
+       regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON7,
+                    RK3366_GMAC_RXCLK_DLY_ENABLE |
+                    RK3366_GMAC_TXCLK_DLY_ENABLE |
+                    RK3366_GMAC_CLK_RX_DL_CFG(rx_delay) |
+                    RK3366_GMAC_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rk3366_set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
+               return;
+       }
+
+       regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                    RK3366_GMAC_PHY_INTF_SEL_RMII | RK3366_GMAC_RMII_MODE);
+}
+
+static void rk3366_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
+               return;
+       }
+
+       if (speed == 10)
+               regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                            RK3366_GMAC_CLK_2_5M);
+       else if (speed == 100)
+               regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                            RK3366_GMAC_CLK_25M);
+       else if (speed == 1000)
+               regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                            RK3366_GMAC_CLK_125M);
+       else
+               dev_err(dev, "unknown speed value for RGMII! speed=%d", speed);
+}
+
+static void rk3366_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
+               return;
+       }
+
+       if (speed == 10) {
+               regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                            RK3366_GMAC_RMII_CLK_2_5M |
+                            RK3366_GMAC_SPEED_10M);
+       } else if (speed == 100) {
+               regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
+                            RK3366_GMAC_RMII_CLK_25M |
+                            RK3366_GMAC_SPEED_100M);
+       } else {
+               dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
+       }
+}
+
+static const struct rk_gmac_ops rk3366_ops = {
+       .set_to_rgmii = rk3366_set_to_rgmii,
+       .set_to_rmii = rk3366_set_to_rmii,
+       .set_rgmii_speed = rk3366_set_rgmii_speed,
+       .set_rmii_speed = rk3366_set_rmii_speed,
+};
+
 #define RK3368_GRF_SOC_CON15   0x043c
 #define RK3368_GRF_SOC_CON16   0x0440
 
@@ -605,6 +717,7 @@ static int rk_gmac_probe(struct platform_device *pdev)
 
 static const struct of_device_id rk_gmac_dwmac_match[] = {
        { .compatible = "rockchip,rk3288-gmac", .data = &rk3288_ops },
+       { .compatible = "rockchip,rk3366-gmac", .data = &rk3366_ops },
        { .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
        { }
 };