net: stmmac: dwmac-rk: add rk3228-specific data

Add constants and callback functions for the dwmac on rk3228/rk3229 socs.
As can be seen, the base structure is the same, only registers and the
bits in them moved slightly.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
index 93eac7c..cccd945 100644 (file)
--- a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
+++ b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
@@ -3,7 +3,8 @@ Rockchip SoC RK3288 10/100/1000 Ethernet driver(GMAC)
 The device node has following properties.
 
 Required properties:
- - compatible: Can be one of "rockchip,rk3288-gmac", "rockchip,rk3368-gmac"
+ - compatible: Can be one of "rockchip,rk3228-gmac", "rockchip,rk3288-gmac",
+                             "rockchip,rk3368-gmac"
  - reg: addresses and length of the register sets for the device.
  - interrupts: Should contain the GMAC interrupts.
  - interrupt-names: Should contain the interrupt names "macirq".

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 63c2e4f..9210591 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -73,6 +73,122 @@ struct rk_priv_data {
 #define GRF_BIT(nr)    (BIT(nr) | BIT(nr+16))
 #define GRF_CLR_BIT(nr)        (BIT(nr+16))
 
+#define RK3228_GRF_MAC_CON0    0x0900
+#define RK3228_GRF_MAC_CON1    0x0904
+
+/* RK3228_GRF_MAC_CON0 */
+#define RK3228_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 7)
+#define RK3228_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
+
+/* RK3228_GRF_MAC_CON1 */
+#define RK3228_GMAC_PHY_INTF_SEL_RGMII \
+               (GRF_BIT(4) | GRF_CLR_BIT(5) | GRF_CLR_BIT(6))
+#define RK3228_GMAC_PHY_INTF_SEL_RMII  \
+               (GRF_CLR_BIT(4) | GRF_CLR_BIT(5) | GRF_BIT(6))
+#define RK3228_GMAC_FLOW_CTRL          GRF_BIT(3)
+#define RK3228_GMAC_FLOW_CTRL_CLR      GRF_CLR_BIT(3)
+#define RK3228_GMAC_SPEED_10M          GRF_CLR_BIT(2)
+#define RK3228_GMAC_SPEED_100M         GRF_BIT(2)
+#define RK3228_GMAC_RMII_CLK_25M       GRF_BIT(7)
+#define RK3228_GMAC_RMII_CLK_2_5M      GRF_CLR_BIT(7)
+#define RK3228_GMAC_CLK_125M           (GRF_CLR_BIT(8) | GRF_CLR_BIT(9))
+#define RK3228_GMAC_CLK_25M            (GRF_BIT(8) | GRF_BIT(9))
+#define RK3228_GMAC_CLK_2_5M           (GRF_CLR_BIT(8) | GRF_BIT(9))
+#define RK3228_GMAC_RMII_MODE          GRF_BIT(10)
+#define RK3228_GMAC_RMII_MODE_CLR      GRF_CLR_BIT(10)
+#define RK3228_GMAC_TXCLK_DLY_ENABLE   GRF_BIT(0)
+#define RK3228_GMAC_TXCLK_DLY_DISABLE  GRF_CLR_BIT(0)
+#define RK3228_GMAC_RXCLK_DLY_ENABLE   GRF_BIT(1)
+#define RK3228_GMAC_RXCLK_DLY_DISABLE  GRF_CLR_BIT(1)
+
+static void rk3228_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, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                    RK3228_GMAC_PHY_INTF_SEL_RGMII |
+                    RK3228_GMAC_RMII_MODE_CLR |
+                    RK3228_GMAC_RXCLK_DLY_ENABLE |
+                    RK3228_GMAC_TXCLK_DLY_ENABLE);
+
+       regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON0,
+                    RK3228_GMAC_CLK_RX_DL_CFG(rx_delay) |
+                    RK3228_GMAC_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rk3228_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, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                    RK3228_GMAC_PHY_INTF_SEL_RMII |
+                    RK3228_GMAC_RMII_MODE);
+
+       /* set MAC to RMII mode */
+       regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1, GRF_BIT(11));
+}
+
+static void rk3228_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, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       if (speed == 10)
+               regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                            RK3228_GMAC_CLK_2_5M);
+       else if (speed == 100)
+               regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                            RK3228_GMAC_CLK_25M);
+       else if (speed == 1000)
+               regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                            RK3228_GMAC_CLK_125M);
+       else
+               dev_err(dev, "unknown speed value for RGMII! speed=%d", speed);
+}
+
+static void rk3228_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, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       if (speed == 10)
+               regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                            RK3228_GMAC_RMII_CLK_2_5M |
+                            RK3228_GMAC_SPEED_10M);
+       else if (speed == 100)
+               regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
+                            RK3228_GMAC_RMII_CLK_25M |
+                            RK3228_GMAC_SPEED_100M);
+       else
+               dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
+}
+
+static const struct rk_gmac_ops rk3228_ops = {
+       .set_to_rgmii = rk3228_set_to_rgmii,
+       .set_to_rmii = rk3228_set_to_rmii,
+       .set_rgmii_speed = rk3228_set_rgmii_speed,
+       .set_rmii_speed = rk3228_set_rmii_speed,
+};
+
 #define RK3288_GRF_SOC_CON1    0x0248
 #define RK3288_GRF_SOC_CON3    0x0250
 
@@ -642,6 +758,7 @@ static int rk_gmac_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id rk_gmac_dwmac_match[] = {
+       { .compatible = "rockchip,rk3228-gmac", .data = &rk3228_ops },
        { .compatible = "rockchip,rk3288-gmac", .data = &rk3288_ops },
        { .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
        { }