Lines Matching full:u2

163 	 * However, there are some that don't, and they set the U1/U2 exit  in usb_device_supports_lpm()
187 * U1/U2, send a PING to the device and receive a PING_RESPONSE.
235 * a transition from either U1 or U2.
354 * U2, it's tHubPort2PortExitLat + U2DevExitLat - U1DevExitLat. I in usb_set_lpm_parameters()
358 * What do we do if the U2 exit latency is less than the U1 exit in usb_set_lpm_parameters()
3927 "U2",
3933 * device-initiated U1 or U2. This lets the device know the exit latencies from
3934 * the time the device initiates a U1 or U2 exit, to the time it will receive a
3964 * U1/U2 when the exit latencies are too high. in usb_req_set_sel()
4019 * Enable or disable device-initiated U1 or U2 transitions.
4035 dev_warn(&udev->dev, "%s: Can't %s non-U1 or U2 state.\n", in usb_set_device_initiated_lpm()
4051 * for either U1 or U2. in usb_set_device_initiated_lpm()
4090 dev_warn(&udev->dev, "%s: Can't set timeout for non-U1 or U2 state.\n", in usb_set_lpm_timeout()
4120 * Don't allow device intiated U1/U2 if the system exit latency + one bus
4161 * Enable the hub-initiated U1/U2 idle timeouts, and enable device-initiated
4162 * U1/U2 entry.
4164 * We will attempt to enable U1 or U2, but there are no guarantees that the
4165 * control transfers to set the hub timeout or enable device-initiated U1/U2
4168 * If the control transfer to enable device-initiated U1/U2 entry fails, then
4169 * hub-initiated U1/U2 will be disabled.
4171 * If we cannot set the parent hub U1/U2 timeout, we attempt to let the xHCI
4173 * take up more slightly more bus bandwidth for unnecessary U1/U2 exit latency.
4183 * U1 or U2, it's probably lying. Assume it doesn't implement that link in usb_enable_link_state()
4201 /* We allow the host controller to set the U1/U2 timeout internally in usb_enable_link_state()
4220 /* If we can't set the parent hub U1/U2 timeout, in usb_enable_link_state()
4235 * Request to enable device initiated U1/U2 failed, in usb_enable_link_state()
4250 * Disable the hub-initiated U1/U2 idle timeouts, and disable device-initiated
4251 * U1/U2 entry.
4253 * If this function returns -EBUSY, the parent hub will still allow U1/U2 entry.
4254 * If zero is returned, the parent will not allow the link to go into U1/U2.
4256 * If zero is returned, device-initiated U1/U2 entry may still be enabled, but
4258 * still disallow device-initiated U1/U2 entry.
4260 * If zero is returned, the xHCI host controller may still think U1/U2 entry is
4262 * (to account for U1/U2 exit latency), but it should be harmless.
4272 dev_warn(&udev->dev, "%s: Can't disable non-U1 or U2 state.\n", in usb_disable_link_state()
4288 * is disabled. Hub will disallows link to enter U1/U2 as well, in usb_disable_link_state()
4302 * Disable hub-initiated and device-initiated U1 and U2 entry.
4358 * Attempt to enable device-initiated and hub-initiated U1 and U2 entry. The
4359 * xHCI host policy may prevent U1 or U2 from being enabled.
4361 * Other callers may have disabled link PM, so U1 and U2 entry will be disabled
4380 * Device must be configured to accept set feature U1/U2 timeout. in usb_enable_lpm()