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path: root/drivers/usb/core/hub.h
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Diffstat (limited to 'drivers/usb/core/hub.h')
-rw-r--r--drivers/usb/core/hub.h41
1 files changed, 35 insertions, 6 deletions
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index 33bcb2c6f90a..0a7cdc0ef0a9 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -45,12 +45,13 @@ struct usb_hub {
unsigned long event_bits[1]; /* status change bitmask */
unsigned long change_bits[1]; /* ports with logical connect
status change */
- unsigned long busy_bits[1]; /* ports being reset or
- resumed */
unsigned long removed_bits[1]; /* ports with a "removed"
device present */
unsigned long wakeup_bits[1]; /* ports that have signaled
remote wakeup */
+ unsigned long power_bits[1]; /* ports that are powered */
+ unsigned long child_usage_bits[1]; /* ports powered on for
+ children */
#if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
#error event_bits[] is too short!
#endif
@@ -66,6 +67,7 @@ struct usb_hub {
unsigned limited_power:1;
unsigned quiescing:1;
unsigned disconnected:1;
+ unsigned in_reset:1;
unsigned quirk_check_port_auto_suspend:1;
@@ -81,19 +83,23 @@ struct usb_hub {
* @child: usb device attached to the port
* @dev: generic device interface
* @port_owner: port's owner
+ * @peer: related usb2 and usb3 ports (share the same connector)
* @connect_type: port's connect type
+ * @location: opaque representation of platform connector location
+ * @status_lock: synchronize port_event() vs usb_port_{suspend|resume}
* @portnum: port index num based one
- * @power_is_on: port's power state
- * @did_runtime_put: port has done pm_runtime_put().
+ * @is_superspeed cache super-speed status
*/
struct usb_port {
struct usb_device *child;
struct device dev;
struct usb_dev_state *port_owner;
+ struct usb_port *peer;
enum usb_port_connect_type connect_type;
+ usb_port_location_t location;
+ struct mutex status_lock;
u8 portnum;
- unsigned power_is_on:1;
- unsigned did_runtime_put:1;
+ unsigned int is_superspeed:1;
};
#define to_usb_port(_dev) \
@@ -111,6 +117,29 @@ extern int hub_port_debounce(struct usb_hub *hub, int port1,
extern int usb_clear_port_feature(struct usb_device *hdev,
int port1, int feature);
+static inline bool hub_is_port_power_switchable(struct usb_hub *hub)
+{
+ __le16 hcs;
+
+ if (!hub)
+ return false;
+ hcs = hub->descriptor->wHubCharacteristics;
+ return (le16_to_cpu(hcs) & HUB_CHAR_LPSM) < HUB_CHAR_NO_LPSM;
+}
+
+static inline int hub_is_superspeed(struct usb_device *hdev)
+{
+ return hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS;
+}
+
+static inline unsigned hub_power_on_good_delay(struct usb_hub *hub)
+{
+ unsigned delay = hub->descriptor->bPwrOn2PwrGood * 2;
+
+ /* Wait at least 100 msec for power to become stable */
+ return max(delay, 100U);
+}
+
static inline int hub_port_debounce_be_connected(struct usb_hub *hub,
int port1)
{