>From a96a1bcaba8afa9d716e88b241ac77d97be068f9 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Thu, 19 Aug 2021 06:58:52 +0200 Subject: [PATCH] net: usb: asix: ax88772: move embedded PHY detection as early as possible Some HW revisions need additional MAC configuration before the embedded PHY can be enabled. If this is not done, we won't be able to get response from the PHY. Signed-off-by: Oleksij Rempel --- drivers/net/usb/asix.h | 1 + drivers/net/usb/asix_devices.c | 41 +++++++++++++++++----------------- 2 files changed, 21 insertions(+), 21 deletions(-) diff --git a/drivers/net/usb/asix.h b/drivers/net/usb/asix.h index e1994a246122..2a1e31defe71 100644 --- a/drivers/net/usb/asix.h +++ b/drivers/net/usb/asix.h @@ -184,6 +184,7 @@ struct asix_common_private { struct phy_device *phydev; u16 phy_addr; char phy_name[20]; + bool embd_phy; }; extern const struct driver_info ax88172a_info; diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index cb01897c7a5d..a74e67a60436 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -354,24 +354,23 @@ static int ax88772_reset(struct usbnet *dev) static int ax88772_hw_reset(struct usbnet *dev, int in_pm) { struct asix_data *data = (struct asix_data *)&dev->data; - int ret, embd_phy; + struct asix_common_private *priv = dev->driver_priv; u16 rx_ctl; + int ret; ret = asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5, in_pm); if (ret < 0) goto out; - embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0); - - ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, + ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, priv->embd_phy, 0, 0, NULL, in_pm); if (ret < 0) { netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret); goto out; } - if (embd_phy) { + if (priv->embd_phy) { ret = asix_sw_reset(dev, AX_SWRESET_IPPD, in_pm); if (ret < 0) goto out; @@ -449,17 +448,16 @@ static int ax88772_hw_reset(struct usbnet *dev, int in_pm) static int ax88772a_hw_reset(struct usbnet *dev, int in_pm) { struct asix_data *data = (struct asix_data *)&dev->data; - int ret, embd_phy; + struct asix_common_private *priv = dev->driver_priv; u16 rx_ctl, phy14h, phy15h, phy16h; u8 chipcode = 0; + int ret; ret = asix_write_gpio(dev, AX_GPIO_RSE, 5, in_pm); if (ret < 0) goto out; - embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0); - - ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy | + ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, priv->embd_phy | AX_PHYSEL_SSEN, 0, 0, NULL, in_pm); if (ret < 0) { netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret); @@ -683,12 +681,6 @@ static int ax88772_init_phy(struct usbnet *dev) struct asix_common_private *priv = dev->driver_priv; int ret; - ret = asix_read_phy_addr(dev, true); - if (ret < 0) - return ret; - - priv->phy_addr = ret; - snprintf(priv->phy_name, sizeof(priv->phy_name), PHY_ID_FMT, priv->mdio->id, priv->phy_addr); @@ -715,6 +707,12 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) struct asix_common_private *priv; int ret, i; + priv = devm_kzalloc(&dev->udev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + dev->driver_priv = priv; + usbnet_get_endpoints(dev, intf); /* Maybe the boot loader passed the MAC address via device tree */ @@ -750,6 +748,13 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->needed_headroom = 4; /* cf asix_tx_fixup() */ dev->net->needed_tailroom = 4; /* cf asix_tx_fixup() */ + ret = asix_read_phy_addr(dev, true); + if (ret < 0) + return ret; + + priv->phy_addr = ret; + priv->embd_phy = ((priv->phy_addr & 0x1f) == 0x10 ? true : false); + asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, 0, 1, &chipcode, 0); chipcode &= AX_CHIPCODE_MASK; @@ -768,12 +773,6 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) dev->rx_urb_size = 2048; } - priv = devm_kzalloc(&dev->udev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - dev->driver_priv = priv; - priv->presvd_phy_bmcr = 0; priv->presvd_phy_advertise = 0; if (chipcode == AX_AX88772_CHIPCODE) { -- 2.30.2