The Asix driver takes the link down during init() and then brings it back up. This commit changes this so that if a link has already been established successfully we simply check that the link is still good.
This reduces the delay between successive network commands.
Signed-off-by: Simon Glass sjg@chromium.org --- drivers/usb/eth/asix.c | 36 +++++++++++++++++++++++------------- include/usb_ether.h | 5 +++-- 2 files changed, 26 insertions(+), 15 deletions(-)
diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c index 9b012e4..18e5457 100644 --- a/drivers/usb/eth/asix.c +++ b/drivers/usb/eth/asix.c @@ -307,20 +307,12 @@ static int mii_nway_restart(struct ueth_data *dev) return r; }
-/* - * Asix callbacks - */ -static int asix_init(struct eth_device *eth, bd_t *bd) +static int full_init(struct eth_device *eth) { + struct ueth_data *dev = (struct ueth_data *)eth->priv; int embd_phy; unsigned char buf[ETH_ALEN]; u16 rx_ctl; - struct ueth_data *dev = (struct ueth_data *)eth->priv; - int timeout = 0; -#define TIMEOUT_RESOLUTION 50 /* ms */ - int link_detected; - - debug("** %s()\n", __func__);
if (asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5) < 0) @@ -395,6 +387,25 @@ static int asix_init(struct eth_device *eth, bd_t *bd)
if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0) goto out_err; + return 0; +out_err: + return -1; +} + +/* + * Asix callbacks + */ +static int asix_init(struct eth_device *eth, bd_t *bd) +{ + struct ueth_data *dev = (struct ueth_data *)eth->priv; + int timeout = 0; +#define TIMEOUT_RESOLUTION 50 /* ms */ + int link_detected; + + debug("** %s()\n", __func__); + + if (!dev->has_been_running && full_init(eth)) + return -1;
do { link_detected = asix_mdio_read(dev, dev->phy_id, MII_BMSR) & @@ -411,12 +422,11 @@ static int asix_init(struct eth_device *eth, bd_t *bd) printf("done.\n"); } else { printf("unable to connect.\n"); - goto out_err; + return -1; }
+ dev->has_been_running = 1; return 0; -out_err: - return -1; }
static int asix_send(struct eth_device *eth, volatile void *packet, int length) diff --git a/include/usb_ether.h b/include/usb_ether.h index a7fb26b..73b085d 100644 --- a/include/usb_ether.h +++ b/include/usb_ether.h @@ -37,8 +37,9 @@
struct ueth_data { /* eth info */ - struct eth_device eth_dev; /* used with eth_register */ - int phy_id; /* mii phy id */ + struct eth_device eth_dev; /* used with eth_register */ + int phy_id; /* mii phy id */ + int has_been_running; /* 1 if we have had a link up */
/* usb info */ struct usb_device *pusb_dev; /* this usb_device */