Messages in this thread Patch in this message | | | From | Roger Quadros <> | Subject | [PATCH v4 11/13] usb: core: hub: Notify OTG fsm when A device sets b_hnp_enable | Date | Mon, 24 Aug 2015 16:21:22 +0300 |
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This is the a_set_b_hnp_enable flag in the OTG state machine diagram and must be set when the A-Host has successfully set the b_hnp_enable feature of the OTG-B-Peripheral attached to it.
When this bit changes we kick our OTG FSM to make note of the change and act accordingly.
Signed-off-by: Roger Quadros <rogerq@ti.com> --- drivers/usb/core/hub.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 431839b..3993168 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2271,6 +2271,9 @@ static int usb_enumerate_device_otg(struct usb_device *udev) "can't set HNP mode: %d\n", err); bus->b_hnp_enable = 0; + } else { + /* notify OTG fsm about a_set_b_hnp_enable */ + usb_otg_kick_fsm(udev->bus->controller); } } } @@ -4238,8 +4241,13 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, */ if (!hdev->parent) { delay = HUB_ROOT_RESET_TIME; - if (port1 == hdev->bus->otg_port) + if (port1 == hdev->bus->otg_port) { hdev->bus->b_hnp_enable = 0; +#ifdef CONFIG_USB_OTG + /* notify OTG fsm about a_set_b_hnp_enable change */ + usb_otg_kick_fsm(hdev->bus->controller); +#endif + } } /* Some low speed devices have problems with the quick delay, so */ -- 2.1.4
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