diff options
| author | Hemant Kumar <hemantk@codeaurora.org> | 2017-06-07 18:54:42 -0700 |
|---|---|---|
| committer | Hemant Kumar <hemantk@codeaurora.org> | 2017-06-07 19:04:31 -0700 |
| commit | e5223a9107e5ee250ad67ea4cb68eac7f1365e17 (patch) | |
| tree | d2a25b425455cb3a8ee55f1094fb454096738e8a /drivers/usb/core | |
| parent | eb28d0da158f7bfe2f94b3d1cb003fb7abda0c15 (diff) | |
usb: core: Add support to parse config summary capability descriptors
This descriptor describes the list of functions present in a given
configuration. There should be one such descriptor per configuration
supported by the device. The order in which these descriptors appear
in the BOS descriptor reflects the order of preference of configurations
as desired by the device for optimal functionality. Configuration Summary
descriptors are used by Host software to decide which Configuration to set
to obtain the desired functionality.
Change-Id: I7ec095ce19caa690c0d3dc0fdd3add5ad37a74f3
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/config.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 325cbc9c35d8..b1298f093f13 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -949,6 +949,14 @@ int usb_get_bos_descriptor(struct usb_device *dev) dev->bos->ss_id = (struct usb_ss_container_id_descriptor *)buffer; break; + case USB_CAP_TYPE_CONFIG_SUMMARY: + /* one such desc per configuration */ + if (!dev->bos->num_config_summary_desc) + dev->bos->config_summary = + (struct usb_config_summary_descriptor *)buffer; + + dev->bos->num_config_summary_desc++; + break; default: break; } |