[U-Boot] 83xx, uec: adjust enet_interface settings on the fly.

[Heiko Schocher]

If using UCC as Ethernet Controller and type = FAST_ETH, it was
not possible to switch between 10 and 100 MBit interfaces. This
patch adds this for following interfaces:

10_MII
10_RMII
10_RGMII
100_MII
100_RMII
100_RGMII

Signed-off-by: Heiko Schocher <hs at denx.de>
---
 drivers/qe/uec.c |   73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 73 insertions(+), 0 deletions(-)

diff --git a/drivers/qe/uec.c b/drivers/qe/uec.c
index db95ada..9851cc4 100644
--- a/drivers/qe/uec.c
+++ b/drivers/qe/uec.c
@@ -65,6 +65,22 @@ static uec_info_t uec_info[] = {

 #define MAXCONTROLLERS	(8)

+static char *enet_interface_name[] = {
+	"10_MII",
+	"10_RMII",
+	"10_RGMII",
+	"100_MII",
+	"100_RMII",
+	"100_RGMII",
+	"1000_GMII",
+	"1000_RGMII",
+	"1000_RGMII_ID",
+	"1000_RGMII_RXID",
+	"1000_TBI",
+	"1000_RTBI",
+	"1000_SGMII"
+};
+
 static struct eth_device *devlist[MAXCONTROLLERS];

 u16 phy_read (struct uec_mii_info *mii_info, u16 regnum);
@@ -497,6 +513,60 @@ bus_fail:
 	return err;
 }

+static  void adjust_fast_enet_interface(int speed, struct eth_device *dev)
+{
+	uec_private_t	*uec = (uec_private_t *)dev->priv;
+	uec_t		*uec_regs;
+	int		change = 0;
+
+	extern void change_phy_interface_mode(struct eth_device *dev,
+					 enet_interface_e mode);
+	uec_regs = uec->uec_regs;
+
+	switch (speed) {
+	case 100:
+		switch (uec->uec_info->enet_interface) {
+		case ENET_10_MII:
+		case ENET_10_RMII:
+		case ENET_10_RGMII:
+			uec->uec_info->enet_interface += 3;
+			change = 1;
+			break;
+		default:
+			break;
+		}
+		break;
+	case 10:
+		switch (uec->uec_info->enet_interface) {
+		case ENET_100_MII:
+		case ENET_100_RMII:
+		case ENET_100_RGMII:
+			uec->uec_info->enet_interface -= 3;
+			change = 1;
+			break;
+		default:
+			break;
+		}
+		break;
+	default:
+		/* do nothing, not supported yet */
+		printf("%s: speed: %d and mode: %d not supported yet.\n",
+			__func__, speed, uec->uec_info->enet_interface);
+		break;
+	}
+	if (change) {
+		printf ("switching to %s\n",
+			enet_interface_name[uec->uec_info->enet_interface]);
+		/* change phy */
+		change_phy_interface_mode(dev,
+			uec->uec_info->enet_interface);
+		/* change the MAC interface mode */
+		uec_set_mac_if_mode(uec,
+			uec->uec_info->enet_interface);
+
+	}
+}
+
 static void adjust_link(struct eth_device *dev)
 {
 	uec_private_t		*uec = (uec_private_t *)dev->priv;
@@ -547,6 +617,8 @@ static void adjust_link(struct eth_device *dev)
 						dev->name, mii_info->speed);
 					break;
 				}
+			} else if (uec->uec_info->uf_info.eth_type == FAST_ETH) {
+				adjust_fast_enet_interface(mii_info->speed, dev);
 			}

 			printf("%s: Speed %dBT\n", dev->name, mii_info->speed);
@@ -1215,6 +1287,7 @@ static int uec_init(struct eth_device* dev, bd_t *bd)
 		if (err || i <= 0)
 			printf("warning: %s: timeout on PHY link\n", dev->name);

+		adjust_link(dev);
 		uec->the_first_run = 1;
 	}

-- 
1.6.2.5

-- 
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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany