diff options
Diffstat (limited to 'payloads/libpayload/drivers/usb')
| -rw-r--r-- | payloads/libpayload/drivers/usb/ehci_private.h | 1 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/usb/ehci_rh.c | 13 |
2 files changed, 13 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/usb/ehci_private.h b/payloads/libpayload/drivers/usb/ehci_private.h index 6fa5f0344d..8ac15b3093 100644 --- a/payloads/libpayload/drivers/usb/ehci_private.h +++ b/payloads/libpayload/drivers/usb/ehci_private.h @@ -49,6 +49,7 @@ typedef volatile u32 portsc_t; typedef volatile struct { #define HCS_NPORTS_MASK 0xf +#define HCS_PORT_POWER_CONTROL 0x10 u8 caplength; u8 res1; u16 hciversion; diff --git a/payloads/libpayload/drivers/usb/ehci_rh.c b/payloads/libpayload/drivers/usb/ehci_rh.c index dd073a3b99..d84069e613 100644 --- a/payloads/libpayload/drivers/usb/ehci_rh.c +++ b/payloads/libpayload/drivers/usb/ehci_rh.c @@ -137,10 +137,21 @@ ehci_rh_init (usbdev_t *dev) debug("root hub has %x ports\n", RH_INST(dev)->n_ports); + /* If the host controller has port power control, enable power on + * all ports and wait 20ms. + */ + if (EHCI_INST(dev->controller)->capabilities->hcsparams + & HCS_PORT_POWER_CONTROL) { + debug("host controller has port power control, " + "giving power to all ports.\n"); + for (i=0; i < RH_INST(dev)->n_ports; i++) + RH_INST(dev)->ports[i] |= P_PP; + } + mdelay(20); // ehci spec 2.3.9 + RH_INST(dev)->devices = malloc(RH_INST(dev)->n_ports * sizeof(int)); for (i=0; i < RH_INST(dev)->n_ports; i++) { RH_INST(dev)->devices[i] = -1; - RH_INST(dev)->ports[i] |= P_PP; ehci_rh_scanport(dev, i); } |