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Date: Tue, 15 Nov 2011 09:12:41 -0800 From: Grant Grundler <grundler@...omium.org> To: davem@...emloft.net Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Allan Chou <allan@...x.com.tw>, Freddy Xin <freddy@...x.com.tw>, Grant Grundler <grundler@...gle.com>, Grant Grundler <grundler@...omium.org> Subject: [PATCH 3/5] net-next:asix: reduce AX88772 init time by about 2 seconds From: Grant Grundler <grundler@...gle.com> ax88772_reset takes about 2 seconds and is called twice. Once from ax88772_bind() directly and again indirectly from usbnet_open(). Reset the USB FW/Phy enough to blink the LEDs when inserted. Signed-off-by: Allan Chou <allan@...x.com.tw> Signed-off-by: Grant Grundler <grundler@...omium.org> --- drivers/net/usb/asix.c | 30 +++++++++++++++++++++++++----- 1 files changed, 25 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c index b4675e8..8462be5 100644 --- a/drivers/net/usb/asix.c +++ b/drivers/net/usb/asix.c @@ -1083,7 +1083,7 @@ static const struct net_device_ops ax88772_netdev_ops = { static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) { - int ret; + int ret, embd_phy; struct asix_data *data = (struct asix_data *)&dev->data; u8 buf[ETH_ALEN]; u32 phyid; @@ -1108,16 +1108,36 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) dev->mii.reg_num_mask = 0x1f; dev->mii.phy_id = asix_get_phy_addr(dev); - phyid = asix_get_phyid(dev); - dbg("PHYID=0x%08x", phyid); - dev->net->netdev_ops = &ax88772_netdev_ops; dev->net->ethtool_ops = &ax88772_ethtool_ops; - ret = ax88772_reset(dev); + embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0); + + /* Reset the PHY to normal operation mode */ + ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL); + if (ret < 0) { + dbg("Select PHY #1 failed: %d", ret); + return ret; + } + + ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL); if (ret < 0) return ret; + msleep(150); + + ret = asix_sw_reset(dev, AX_SWRESET_CLEAR); + if (ret < 0) + return ret; + + msleep(150); + + ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_PRTE); + + /* Read PHYID register *AFTER* the PHY was reset properly */ + phyid = asix_get_phyid(dev); + dbg("PHYID=0x%08x", phyid); + /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */ if (dev->driver_info->flags & FLAG_FRAMING_AX) { /* hard_mtu is still the default - the device does not support -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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