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usb: gadget: Export recommended BESL values

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Currently there's no option for the controller driver to report the
recommended Best Effort Service Latency (BESL) when operating with LPM
support. Add new fields in usb_dcd_config_params to export the
recommended baseline and deep BESL values for the function drivers to
set the proper BESL value in the BOS descriptor.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Thinh Nguyen 2019-08-19 18:35:47 -07:00 committed by Felipe Balbi
parent f1b19006f4
commit 05f0b20b67
1 changed files with 3 additions and 0 deletions
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include/linux/usb/gadget.h
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@ -291,6 +291,9 @@ struct usb_dcd_config_params {
#define USB_DEFAULT_U1_DEV_EXIT_LAT 0x01 /* Less then 1 microsec */
__le16 bU2DevExitLat; /* U2 Device exit Latency */
#define USB_DEFAULT_U2_DEV_EXIT_LAT 0x1F4 /* Less then 500 microsec */
__u8 besl_baseline; /* Recommended baseline BESL (0-15) */
__u8 besl_deep; /* Recommended deep BESL (0-15) */
#define USB_DEFAULT_BESL_UNSPECIFIED 0xFF /* No recommended value */
};