diff options
Diffstat (limited to 'payloads/libpayload/drivers/usb')
| -rw-r--r-- | payloads/libpayload/drivers/usb/usbhub.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/usb/usbhub.c b/payloads/libpayload/drivers/usb/usbhub.c index f75141eae5..340e47ae3d 100644 --- a/payloads/libpayload/drivers/usb/usbhub.c +++ b/payloads/libpayload/drivers/usb/usbhub.c @@ -158,6 +158,21 @@ static const generic_hub_ops_t usb_hub_ops = { .reset_port = generic_hub_resetport, }; +/* Clear CSC if set and enumerate port if it's connected regardless of change + bits. Some broken hubs don't set CSC if already connected during reset. */ +static void +usb_hub_port_initialize(usbdev_t *const dev, const int port) +{ + unsigned short buf[2]; + int ret = get_status(dev, port, DR_PORT, sizeof(buf), buf); + if (ret < 0) + return; + if (buf[1] & PORT_CONNECTION) + clear_feature(dev, port, SEL_C_PORT_CONNECTION, DR_PORT); + if (buf[0] & PORT_CONNECTION) + generic_hub_scanport(dev, port); +} + void usb_hub_init(usbdev_t *const dev) { @@ -172,5 +187,10 @@ usb_hub_init(usbdev_t *const dev) if (dev->speed == SUPER_SPEED) usb_hub_set_hub_depth(dev); - generic_hub_init(dev, desc.bNbrPorts, &usb_hub_ops); + if (generic_hub_init(dev, desc.bNbrPorts, &usb_hub_ops) < 0) + return; + + int port; + for (port = 1; port <= GEN_HUB(dev)->num_ports; ++port) + usb_hub_port_initialize(dev, port); } |