#include "hub.h"
#include "otg_whitelist.h"
+#if defined(CONFIG_USB_OTG_WHITELIST_FOR_MDM)
+#include "otg_whitelist_for_mdm.h"
+#endif
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
+extern int deny_new_usb;
+
/* Protect struct usb_device->state and ->children members
* Note: Both are also protected by ->dev.sem, except that ->state can
* change to USB_STATE_NOTATTACHED even when the semaphore isn't held. */
}
/* USB 2.0 spec Section 11.24.4.5 */
-static int get_hub_descriptor(struct usb_device *hdev, void *data)
+static int get_hub_descriptor(struct usb_device *hdev,
+ struct usb_hub_descriptor *desc)
{
int i, ret, size;
unsigned dtype;
for (i = 0; i < 3; i++) {
ret = usb_control_msg(hdev, usb_rcvctrlpipe(hdev, 0),
USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
- dtype << 8, 0, data, size,
+ dtype << 8, 0, desc, size,
USB_CTRL_GET_TIMEOUT);
- if (ret >= (USB_DT_HUB_NONVAR_SIZE + 2))
+ if (hub_is_superspeed(hdev)) {
+ if (ret == size)
+ return ret;
+ } else if (ret >= USB_DT_HUB_NONVAR_SIZE + 2) {
+ /* Make sure we have the DeviceRemovable field. */
+ size = USB_DT_HUB_NONVAR_SIZE + desc->bNbrPorts / 8 + 1;
+ if (ret < size)
+ return -EMSGSIZE;
return ret;
+ }
}
return -EINVAL;
}
*/
static void hub_port_logical_disconnect(struct usb_hub *hub, int port1)
{
+#ifdef CONFIG_USB_DEBUG_DETAILED_LOG
+ dev_info(&hub->ports[port1 - 1]->dev, "logical disconnect\n");
+#else
dev_dbg(&hub->ports[port1 - 1]->dev, "logical disconnect\n");
+#endif
hub_port_disable(hub, port1, 1);
/* FIXME let caller ask to power down the port:
portstatus = portchange = 0;
status = hub_port_status(hub, port1, &portstatus, &portchange);
+ if (status)
+ goto abort;
+
if (udev || (portstatus & USB_PORT_STAT_CONNECTION))
dev_dbg(&port_dev->dev, "status %04x change %04x\n",
portstatus, portchange);
/* Scan all ports that need attention */
kick_hub_wq(hub);
-
+ abort:
if (type == HUB_INIT2 || type == HUB_INIT3) {
/* Allow autosuspend if it was suppressed */
disconnected:
}
mutex_init(&hub->status_mutex);
- hub->descriptor = kmalloc(sizeof(*hub->descriptor), GFP_KERNEL);
+ hub->descriptor = kzalloc(sizeof(*hub->descriptor), GFP_KERNEL);
if (!hub->descriptor) {
ret = -ENOMEM;
goto fail;
/* Request the entire hub descriptor.
* hub->descriptor can handle USB_MAXCHILDREN ports,
- * but the hub can/will return fewer bytes here.
+ * but a (non-SS) hub can/will return fewer bytes here.
*/
ret = get_hub_descriptor(hdev, hub->descriptor);
if (ret < 0) {
message = "can't read hub descriptor";
goto fail;
- } else if (hub->descriptor->bNbrPorts > USB_MAXCHILDREN) {
+ }
+
+ maxchild = USB_MAXCHILDREN;
+ if (hub_is_superspeed(hdev))
+ maxchild = min_t(unsigned, maxchild, USB_SS_MAXPORTS);
+
+ if (hub->descriptor->bNbrPorts > maxchild) {
message = "hub has too many ports!";
ret = -ENODEV;
goto fail;
dev_info(&udev->dev, "USB disconnect, device number %d\n",
udev->devnum);
+ /*
+ * Ensure that the pm runtime code knows that the USB device
+ * is in the process of being disconnected.
+ */
+ pm_runtime_barrier(&udev->dev);
+
usb_lock_device(udev);
hub_disconnect_children(udev);
}
return -ENOTSUPP;
}
-
+#if defined(CONFIG_USB_OTG_WHITELIST_FOR_MDM)
+ if (IS_ENABLED(CONFIG_USB_OTG_WHITELIST_FOR_MDM) &&
+ /*hcd->tpl_support &&*/
+ !is_targeted_for_samsung_mdm(udev)) {
+ if (IS_ENABLED(CONFIG_USB_OTG) && (udev->bus->b_hnp_enable
+ || udev->bus->is_b_host)) {
+ err = usb_port_suspend(udev, PMSG_AUTO_SUSPEND);
+ if (err < 0)
+ dev_dbg(&udev->dev, "HNP fail, %d\n", err);
+ }
+ return -ENOTSUPP;
+ }
+#endif
usb_detect_interface_quirks(udev);
return 0;
if (ret < 0)
return ret;
- /* The port state is unknown until the reset completes. */
- if (!(portstatus & USB_PORT_STAT_RESET))
+ /*
+ * The port state is unknown until the reset completes.
+ *
+ * On top of that, some chips may require additional time
+ * to re-establish a connection after the reset is complete,
+ * so also wait for the connection to be re-established.
+ */
+ if (!(portstatus & USB_PORT_STAT_RESET) &&
+ (portstatus & USB_PORT_STAT_CONNECTION))
break;
/* switch to the long delay after two short delay failures */
if (!(portstatus & USB_PORT_STAT_CONNECTION))
return -ENOTCONN;
- /* bomb out completely if the connection bounced. A USB 3.0
- * connection may bounce if multiple warm resets were issued,
+ /* Retry if connect change is set but status is still connected.
+ * A USB 3.0 connection may bounce if multiple warm resets were issued,
* but the device may have successfully re-connected. Ignore it.
*/
if (!hub_is_superspeed(hub->hdev) &&
- (portchange & USB_PORT_STAT_C_CONNECTION))
- return -ENOTCONN;
+ (portchange & USB_PORT_STAT_C_CONNECTION)) {
+ usb_clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_CONNECTION);
+ return -EAGAIN;
+ }
if (!(portstatus & USB_PORT_STAT_ENABLE))
return -EBUSY;
if (!retval) {
udev->lpm_capable = usb_device_supports_lpm(udev);
usb_set_lpm_parameters(udev);
- }
+ } else
+ goto fail;
}
retval = 0;
static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
u16 portchange)
{
- int status, i;
+ int status = -ENODEV;
+ int i;
unsigned unit_load;
struct usb_device *hdev = hub->hdev;
struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
struct usb_port *port_dev = hub->ports[port1 - 1];
struct usb_device *udev = port_dev->child;
static int unreliable_port = -1;
+#ifdef CONFIG_USB_DEBUG_DETAILED_LOG
+ dev_info (&port_dev->dev,
+ "port %d, status %04x, change %04x, %s\n",
+ port1, portstatus, portchange, portspeed(hub, portstatus));
+#endif
/* Disconnect any existing devices under this port */
if (udev) {
goto done;
return;
}
+
+ if (deny_new_usb) {
+ dev_err(&port_dev->dev, "denied insert of USB device on port %d\n", port1);
+ goto done;
+ }
+
if (hub_is_superspeed(hub->hdev))
unit_load = 150;
else
goto loop;
if (udev->quirks & USB_QUIRK_DELAY_INIT)
- msleep(1000);
+ msleep(2000);
/* consecutive bus-powered hubs aren't reliable; they can
* violate the voltage drop budget. if the new child has
usb_put_dev(udev);
if ((status == -ENOTCONN) || (status == -ENOTSUPP))
break;
+
+ /* When halfway through our retry count, power-cycle the port */
+ if (i == (SET_CONFIG_TRIES / 2) - 1) {
+ dev_info(&port_dev->dev, "attempt power cycle\n");
+ usb_hub_set_port_power(hdev, hub, port1, false);
+ msleep(2 * hub_power_on_good_delay(hub));
+ usb_hub_set_port_power(hdev, hub, port1, true);
+ msleep(hub_power_on_good_delay(hub));
+ }
}
if (hub->hdev->parent ||
!hcd->driver->port_handed_over ||
done:
hub_port_disable(hub, port1, 1);
- if (hcd->driver->relinquish_port && !hub->hdev->parent)
- hcd->driver->relinquish_port(hcd, port1);
-
+ if (hcd->driver->relinquish_port && !hub->hdev->parent) {
+ if (status != -ENOTCONN && status != -ENODEV)
+ hcd->driver->relinquish_port(hcd, port1);
+ }
}
/* Handle physical or logical connection change events.
struct usb_interface *intf;
struct usb_hub *hub;
struct device *hub_dev;
+ struct usb_hcd *hcd;
u16 hubstatus;
u16 hubchange;
int i, ret;
hub = container_of(work, struct usb_hub, events);
hdev = hub->hdev;
hub_dev = hub->intfdev;
+ hcd = bus_to_hcd(hdev->bus);
intf = to_usb_interface(hub_dev);
dev_dbg(hub_dev, "state %d ports %d chg %04x evt %04x\n",
/* Lock the device, then check to see if we were
* disconnected while waiting for the lock to succeed. */
usb_lock_device(hdev);
+ hcd->is_in_hub_event = true;
if (unlikely(hub->disconnected))
goto out_hdev_lock;
/* Balance the usb_autopm_get_interface() above */
usb_autopm_put_interface_no_suspend(intf);
out_hdev_lock:
+ hcd->is_in_hub_event = false;
usb_unlock_device(hdev);
/* Balance the stuff in kick_hub_wq() and allow autosuspend */
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / blobdiff