diff options
| author | T Karthik Reddy <t.karthik.reddy@xilinx.com> | 2019-10-14 15:52:50 +0300 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@gmail.com> | 2019-11-07 02:24:59 +0300 |
| commit | f69257baa8323ffdc5b4fb6af200f9994a2003bd (patch) | |
| tree | 9200c51327c62f8872cda904545372ef9b4f235d /drivers/usb/gadget | |
| parent | d80effb1847822e521cda17b4c73c83629b035d0 (diff) | |
| download | u-boot-f69257baa8323ffdc5b4fb6af200f9994a2003bd.tar.xz | |
usb: composite: add BOS descriptor support to composite framework
To add usb-3.0 support to peripheral device add BOS & SS capability
descriptors to gadget composite framework.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 61 |
1 files changed, 55 insertions, 6 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index c7e7623747..618a7d5016 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -688,6 +688,57 @@ static void composite_setup_complete(struct usb_ep *ep, struct usb_request *req) req->status, req->actual, req->length); } +static int bos_desc(struct usb_composite_dev *cdev) +{ + struct usb_ext_cap_descriptor *usb_ext; + struct usb_bos_descriptor *bos = cdev->req->buf; + + bos->bLength = USB_DT_BOS_SIZE; + bos->bDescriptorType = USB_DT_BOS; + + bos->wTotalLength = cpu_to_le16(USB_DT_BOS_SIZE); + bos->bNumDeviceCaps = 0; + + /* + * A SuperSpeed device shall include the USB2.0 extension descriptor + * and shall support LPM when operating in USB2.0 HS mode. + */ + usb_ext = cdev->req->buf + le16_to_cpu(bos->wTotalLength); + bos->bNumDeviceCaps++; + le16_add_cpu(&bos->wTotalLength, USB_DT_USB_EXT_CAP_SIZE); + usb_ext->bLength = USB_DT_USB_EXT_CAP_SIZE; + usb_ext->bDescriptorType = USB_DT_DEVICE_CAPABILITY; + usb_ext->bDevCapabilityType = USB_CAP_TYPE_EXT; + usb_ext->bmAttributes = + cpu_to_le32(USB_LPM_SUPPORT | USB_BESL_SUPPORT); + + /* + * The Superspeed USB Capability descriptor shall be implemented + * by all SuperSpeed devices. + */ + if (gadget_is_superspeed(cdev->gadget)) { + struct usb_ss_cap_descriptor *ss_cap; + + ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength); + bos->bNumDeviceCaps++; + le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE); + ss_cap->bLength = USB_DT_USB_SS_CAP_SIZE; + ss_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY; + ss_cap->bDevCapabilityType = USB_SS_CAP_TYPE; + ss_cap->bmAttributes = 0; /* LTM is not supported yet */ + ss_cap->wSpeedSupported = + cpu_to_le16(USB_LOW_SPEED_OPERATION | + USB_FULL_SPEED_OPERATION | + USB_HIGH_SPEED_OPERATION | + USB_5GBPS_OPERATION); + ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION; + ss_cap->bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT; + ss_cap->bU2DevExitLat = + cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT); + } + return le16_to_cpu(bos->wTotalLength); +} + /* * The setup() callback implements all the ep0 functionality that's * not handled lower down, in hardware or the hardware driver(like @@ -776,12 +827,10 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) value = min(w_length, (u16) value); break; case USB_DT_BOS: - /* - * The USB compliance test (USB 2.0 Command Verifier) - * issues this request. We should not run into the - * default path here. But return for now until - * the superspeed support is added. - */ + if (gadget_is_superspeed(cdev->gadget)) + value = bos_desc(cdev); + if (value >= 0) + value = min(w_length, (u16)value); break; default: goto unknown; |