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device/xhci: Add helper method to iterate over xhci_supported_protocl

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There is some boilerplate required to iterate over the USB supported
protocol structs. Encapsulate all the in a method to make the callers
simpler.

BUG=b:154756391
TEST=Built test trembyle.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I401f10d242638b0000ba697573856d765333dca0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43352
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Raul E Rangel 2020-07-10 13:58:48 -06:00 • committed by Felix Held
commit 2c952d6bd9
2 changed files with 47 additions and 2 deletions
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8
src/include/device/xhci.h
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@ -52,6 +52,14 @@ enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context,
void (*callback)(void *context,
const struct xhci_ext_cap *cap));
/**
* Helper method that iterates over only the USB supported capabilities structures in the
* xHCI Extended Capabilities List.
*/
enum cb_err xhci_for_each_supported_usb_cap(
const struct device *device, void *context,
void (*callback)(void *context, const struct xhci_supported_protocol *data));
void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol);
#endif /* __DEVICE_XHCI_H__ */