At present the usb hub emulator always reports its downstream port speed as full speed. Actually it is high speed for sandbox-flash, and low speed for sandbox-keyb. We can determine the device speed by checking its device descriptor bcdUSB field, and do the proper hub port status report based on that.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
drivers/usb/emul/sandbox_hub.c | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/emul/sandbox_hub.c b/drivers/usb/emul/sandbox_hub.c index 8ed7a0f..9a0f47b 100644 --- a/drivers/usb/emul/sandbox_hub.c +++ b/drivers/usb/emul/sandbox_hub.c @@ -121,9 +121,12 @@ struct sandbox_hub_priv { int change[SANDBOX_NUM_PORTS]; };
-static struct udevice *hub_find_device(struct udevice *hub, int port) +static struct udevice *hub_find_device(struct udevice *hub, int port, + enum usb_device_speed *speed) { struct udevice *dev; + struct usb_generic_descriptor **gen_desc; + struct usb_device_descriptor **dev_desc;
for (device_find_first_child(hub, &dev); dev; @@ -131,8 +134,27 @@ static struct udevice *hub_find_device(struct udevice *hub, int port) struct sandbox_hub_platdata *plat;
plat = dev_get_parent_platdata(dev); - if (plat->port == port) + if (plat->port == port) { + gen_desc = plat->plat.desc_list; + gen_desc = usb_emul_find_descriptor(gen_desc, + USB_DT_DEVICE, 0); + dev_desc = (struct usb_device_descriptor **)gen_desc; + + switch (le16_to_cpu((*dev_desc)->bcdUSB)) { + case 0x0100: + *speed = USB_SPEED_LOW; + break; + case 0x0101: + *speed = USB_SPEED_FULL; + break; + case 0x0200: + default: + *speed = USB_SPEED_HIGH; + break; + } + return dev; + } }
return NULL; @@ -146,7 +168,8 @@ static int clrset_post_state(struct udevice *hub, int port, int clear, int set) int ret = 0;
if ((clear | set) & USB_PORT_STAT_POWER) { - struct udevice *dev = hub_find_device(hub, port); + enum usb_device_speed speed; + struct udevice *dev = hub_find_device(hub, port, &speed);
if (dev) { if (set & USB_PORT_STAT_POWER) { @@ -156,6 +179,10 @@ static int clrset_post_state(struct udevice *hub, int port, int clear, int set) if (!ret) { set |= USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE; + if (speed == USB_SPEED_LOW) + set |= USB_PORT_STAT_LOW_SPEED; + else if (speed == USB_SPEED_HIGH) + set |= USB_PORT_STAT_HIGH_SPEED; }
} else if (clear & USB_PORT_STAT_POWER) {