diff options
| author | Patrick Delaunay | 2019-03-29 15:42:18 +0100 |
|---|---|---|
| committer | Marek Vasut | 2019-04-21 10:26:52 +0200 |
| commit | 2d76160f049c42087011cfa0e6e878aa2ed6b406 (patch) | |
| tree | 804fdf3ca8bb10bbfb20eaf7c1b982c2afd0e310 /drivers | |
| parent | 0fdd0bc621f060fcf60fd4ba48a2a32f338ffeac (diff) | |
usb: dwc2: Add function for session B check
Add a new function to check the session B validity, to be use to check
cable connection.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/dwc2_udc_otg.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index 146f11e7108..b1efad115ec 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -1151,4 +1151,13 @@ U_BOOT_DRIVER(dwc2_udc_otg) = { .platdata_auto_alloc_size = sizeof(struct dwc2_plat_otg_data), .priv_auto_alloc_size = sizeof(struct dwc2_priv_data), }; + +int dwc2_udc_B_session_valid(struct udevice *dev) +{ + struct dwc2_plat_otg_data *platdata = dev_get_platdata(dev); + struct dwc2_usbotg_reg *usbotg_reg = + (struct dwc2_usbotg_reg *)platdata->regs_otg; + + return readl(&usbotg_reg->gotgctl) & B_SESSION_VALID; +} #endif /* CONFIG_IS_ENABLED(DM_USB_GADGET) */ |