net-next:asix: V2 more fixes for ax88178 phy init sequence

Now works on Samsung Series 5 (chromebook)

Two fixes here:
o use 0x7F mask for phymode
o read phyid *AFTER* phy is powered up (via GPIOs)

Signed-off-by: Allan Chou <allan@asix.com.tw>
Signed-off-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index 8462be589558c74741f72d57cc329d06018c89be..f870ab964e3a1a0350705662fdd01b00befda550 100644 (file)
--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -1248,6 +1248,7 @@ static int ax88178_reset(struct usbnet *dev)
        __le16 eeprom;
        u8 status;
        int gpio0 = 0;
+       u32 phyid;
 
        asix_read_cmd(dev, AX_CMD_READ_GPIOS, 0, 0, 1, &status);
        dbg("GPIO Status: 0x%04x", status);
@@ -1263,12 +1264,13 @@ static int ax88178_reset(struct usbnet *dev)
                data->ledmode = 0;
                gpio0 = 1;
        } else {
-               data->phymode = le16_to_cpu(eeprom) & 7;
+               data->phymode = le16_to_cpu(eeprom) & 0x7F;
                data->ledmode = le16_to_cpu(eeprom) >> 8;
                gpio0 = (le16_to_cpu(eeprom) & 0x80) ? 0 : 1;
        }
        dbg("GPIO0: %d, PhyMode: %d", gpio0, data->phymode);
 
+       /* Power up external GigaPHY through AX88178 GPIO pin */
        asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_1 | AX_GPIO_GPO1EN, 40);
        if ((le16_to_cpu(eeprom) >> 8) != 1) {
                asix_write_gpio(dev, 0x003c, 30);
@@ -1280,6 +1282,13 @@ static int ax88178_reset(struct usbnet *dev)
                asix_write_gpio(dev, AX_GPIO_GPO1EN | AX_GPIO_GPO_1, 30);
        }
 
+       /* Read PHYID register *AFTER* powering up PHY */
+       phyid = asix_get_phyid(dev);
+       dbg("PHYID=0x%08x", phyid);
+
+       /* Set AX88178 to enable MII/GMII/RGMII interface for external PHY */
+       asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0, 0, 0, NULL);
+
        asix_sw_reset(dev, 0);
        msleep(150);
 
@@ -1424,7 +1433,6 @@ static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
 {
        int ret;
        u8 buf[ETH_ALEN];
-       u32 phyid;
        struct asix_data *data = (struct asix_data *)&dev->data;
 
        data->eeprom_len = AX88772_EEPROM_LEN;
@@ -1451,12 +1459,12 @@ static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
        dev->net->netdev_ops = &ax88178_netdev_ops;
        dev->net->ethtool_ops = &ax88178_ethtool_ops;
 
-       phyid = asix_get_phyid(dev);
-       dbg("PHYID=0x%08x", phyid);
+       /* Blink LEDS so users know driver saw dongle */
+       asix_sw_reset(dev, 0);
+       msleep(150);
 
-       ret = ax88178_reset(dev);
-       if (ret < 0)
-               return ret;
+       asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD);
+       msleep(150);
 
        /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
        if (dev->driver_info->flags & FLAG_FRAMING_AX) {