net: macb: add user io config data structure

Different implementation of USER IO register needs different
mapping for bit fields of this register. Add implementation
for this and, since clken is part of USER IO and it needs to
be activated based on per SoC capabilities, add caps in
macb_config where clken specific information needs to be filled.
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>

drivers/net/macb.c

@@ -144,11 +144,20 @@ struct macb_device {
 #endif
 };
 
+struct macb_usrio_cfg {
+	unsigned int		mii;
+	unsigned int		rmii;
+	unsigned int		rgmii;
+	unsigned int		clken;
+};
+
 struct macb_config {
 	unsigned int		dma_burst_length;
 	unsigned int		hw_dma_cap;
+	unsigned int		caps;
 
 	int			(*clk_init)(struct udevice *dev, ulong rate);
+	const struct macb_usrio_cfg	*usrio;
 };
 
 #ifndef CONFIG_DM_ETH
@@ -850,6 +859,7 @@ static int _macb_init(struct macb_device *macb, const char *name)
 {
 #ifdef CONFIG_DM_ETH
 	struct macb_device *macb = dev_get_priv(dev);
+	unsigned int val = 0;
 #endif
 	unsigned long paddr;
 	int ret;
@@ -920,11 +930,17 @@ static int _macb_init(struct macb_device *macb, const char *name)
 		 * to select interface between RMII and MII.
 		 */
 #ifdef CONFIG_DM_ETH
-		if ((macb->phy_interface == PHY_INTERFACE_MODE_RMII) ||
-		    (macb->phy_interface == PHY_INTERFACE_MODE_RGMII))
-			gem_writel(macb, USRIO, GEM_BIT(RGMII));
-		else
-			gem_writel(macb, USRIO, 0);
+		if (macb->phy_interface == PHY_INTERFACE_MODE_RGMII)
+			val = macb->config->usrio->rgmii;
+		else if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
+			val = macb->config->usrio->rmii;
+		else if (macb->phy_interface == PHY_INTERFACE_MODE_MII)
+			val = macb->config->usrio->mii;
+
+		if (macb->config->caps & MACB_CAPS_USRIO_HAS_CLKEN)
+			val |= macb->config->usrio->clken;
+
+		gem_writel(macb, USRIO, val);
 
 		if (macb->phy_interface == PHY_INTERFACE_MODE_SGMII) {
 			unsigned int ncfgr = macb_readl(macb, NCFGR);
@@ -934,7 +950,7 @@ static int _macb_init(struct macb_device *macb, const char *name)
 		}
 #else
 #if defined(CONFIG_RGMII) || defined(CONFIG_RMII)
-		gem_writel(macb, USRIO, GEM_BIT(RGMII));
+		gem_writel(macb, USRIO, macb->config->usrio->rgmii);
 #else
 		gem_writel(macb, USRIO, 0);
 #endif
@@ -945,28 +961,30 @@ static int _macb_init(struct macb_device *macb, const char *name)
 #ifdef CONFIG_AT91FAMILY
 		if (macb->phy_interface == PHY_INTERFACE_MODE_RMII) {
 			macb_writel(macb, USRIO,
-				    MACB_BIT(RMII) | MACB_BIT(CLKEN));
+				    macb->config->usrio->rmii |
+				    macb->config->usrio->clken);
 		} else {
-			macb_writel(macb, USRIO, MACB_BIT(CLKEN));
+			macb_writel(macb, USRIO, macb->config->usrio->clken);
 		}
 #else
 		if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
 			macb_writel(macb, USRIO, 0);
 		else
-			macb_writel(macb, USRIO, MACB_BIT(MII));
+			macb_writel(macb, USRIO, macb->config->usrio->mii);
 #endif
 #else
 #ifdef CONFIG_RMII
 #ifdef CONFIG_AT91FAMILY
-	macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
+	macb_writel(macb, USRIO, macb->config->usrio->rmii |
+		    macb->config->usrio->clken);
 #else
 	macb_writel(macb, USRIO, 0);
 #endif
 #else
 #ifdef CONFIG_AT91FAMILY
-	macb_writel(macb, USRIO, MACB_BIT(CLKEN));
+	macb_writel(macb, USRIO, macb->config->usrio->clken);
 #else
-	macb_writel(macb, USRIO, MACB_BIT(MII));
+	macb_writel(macb, USRIO, macb->config->usrio->mii);
 #endif
 #endif /* CONFIG_RMII */
 #endif
@@ -1307,10 +1325,18 @@ static int macb_enable_clk(struct udevice *dev)
 }
 #endif
 
+static const struct macb_usrio_cfg macb_default_usrio = {
+	.mii = MACB_BIT(MII),
+	.rmii = MACB_BIT(RMII),
+	.rgmii = GEM_BIT(RGMII),
+	.clken = MACB_BIT(CLKEN),
+};
+
 static const struct macb_config default_gem_config = {
 	.dma_burst_length = 16,
 	.hw_dma_cap = HW_DMA_CAP_32B,
 	.clk_init = NULL,
+	.usrio = &macb_default_usrio,
 };
 
 static int macb_eth_probe(struct udevice *dev)
@@ -1408,18 +1434,21 @@ static const struct macb_config microchip_config = {
 	.dma_burst_length = 16,
 	.hw_dma_cap = HW_DMA_CAP_64B,
 	.clk_init = NULL,
+	.usrio = &macb_default_usrio,
 };
 
 static const struct macb_config sama5d4_config = {
 	.dma_burst_length = 4,
 	.hw_dma_cap = HW_DMA_CAP_32B,
 	.clk_init = NULL,
+	.usrio = &macb_default_usrio,
 };
 
 static const struct macb_config sifive_config = {
 	.dma_burst_length = 16,
 	.hw_dma_cap = HW_DMA_CAP_32B,
 	.clk_init = macb_sifive_clk_init,
+	.usrio = &macb_default_usrio,
 };
 
 static const struct udevice_id macb_eth_ids[] = {