diff options
Diffstat (limited to 'payloads/libpayload')
| -rw-r--r-- | payloads/libpayload/drivers/usb/ehci_rh.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/payloads/libpayload/drivers/usb/ehci_rh.c b/payloads/libpayload/drivers/usb/ehci_rh.c index 1d41f3f574..dd073a3b99 100644 --- a/payloads/libpayload/drivers/usb/ehci_rh.c +++ b/payloads/libpayload/drivers/usb/ehci_rh.c @@ -53,31 +53,28 @@ ehci_rh_destroy (usbdev_t *dev) static void ehci_rh_hand_over_port (usbdev_t *dev, int port) { - volatile portsc_t *p = &(RH_INST(dev)->ports[port]); - debug("giving up port %x, it's USB1\n", port+1); /* Lowspeed device. Hand over to companion */ - *p |= P_PORT_OWNER; - do {} while (!(*p & P_CONN_STATUS_CHANGE)); + RH_INST(dev)->ports[port] |= P_PORT_OWNER; + do {} while (!(RH_INST(dev)->ports[port] & P_CONN_STATUS_CHANGE)); /* RW/C register, so clear it by writing 1 */ - *p |= P_CONN_STATUS_CHANGE; + RH_INST(dev)->ports[port] |= P_CONN_STATUS_CHANGE; return; } static void ehci_rh_scanport (usbdev_t *dev, int port) { - volatile portsc_t *p = &(RH_INST(dev)->ports[port]); if (RH_INST(dev)->devices[port]!=-1) { debug("Unregister device at port %x\n", port+1); usb_detach_device(dev->controller, RH_INST(dev)->devices[port]); RH_INST(dev)->devices[port]=-1; } /* device connected, handle */ - if (*p & P_CURR_CONN_STATUS) { + if (RH_INST(dev)->ports[port] & P_CURR_CONN_STATUS) { mdelay(100); - if ((*p & P_LINE_STATUS) == P_LINE_STATUS_LOWSPEED) { + if ((RH_INST(dev)->ports[port] & P_LINE_STATUS) == P_LINE_STATUS_LOWSPEED) { ehci_rh_hand_over_port(dev, port); return; } @@ -85,17 +82,17 @@ ehci_rh_scanport (usbdev_t *dev, int port) /* Deassert enable, assert reset. These must change * atomically. */ - *p = (*p & ~P_PORT_ENABLE) | P_PORT_RESET; + RH_INST(dev)->ports[port] = (RH_INST(dev)->ports[port] & ~P_PORT_ENABLE) | P_PORT_RESET; /* Wait a bit while reset is active. */ mdelay(50); /* Deassert reset. */ - *p &= ~P_PORT_RESET; + RH_INST(dev)->ports[port] &= ~P_PORT_RESET; /* Wait for flag change to finish. The controller might take a while */ - while (*p & P_PORT_RESET) ; - if (!(*p & P_PORT_ENABLE)) { + while (RH_INST(dev)->ports[port] & P_PORT_RESET) ; + if (!(RH_INST(dev)->ports[port] & P_PORT_ENABLE)) { ehci_rh_hand_over_port(dev, port); return; } @@ -103,7 +100,7 @@ ehci_rh_scanport (usbdev_t *dev, int port) RH_INST(dev)->devices[port] = usb_attach_device(dev->controller, dev->address, port, 2); } /* RW/C register, so clear it by writing 1 */ - *p |= P_CONN_STATUS_CHANGE; + RH_INST(dev)->ports[port] |= P_CONN_STATUS_CHANGE; } static int @@ -130,8 +127,6 @@ void ehci_rh_init (usbdev_t *dev) { int i; - volatile portsc_t *p; - dev->destroy = ehci_rh_destroy; dev->poll = ehci_rh_poll; @@ -144,9 +139,8 @@ ehci_rh_init (usbdev_t *dev) RH_INST(dev)->devices = malloc(RH_INST(dev)->n_ports * sizeof(int)); for (i=0; i < RH_INST(dev)->n_ports; i++) { - p = &(RH_INST(dev)->ports[i]); RH_INST(dev)->devices[i] = -1; - *p |= P_PP; + RH_INST(dev)->ports[i] |= P_PP; ehci_rh_scanport(dev, i); } |