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usb: xhci: Set up endpoints for the first 2 interfaces

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The xhci driver currently only does the necessary initialization for
endpoints found in the first interface descriptor. Apple USB keyboards
(released 2021) use the second interface descriptor for the HID keyboard
boot protocol. To allow USB drivers to use endpoints from other
interface descriptors the xhci driver needs to ensure these endpoints
are initialized as well.
Use USB_MAX_ACTIVE_INTERFACES to control how many interface descriptors
are considered during endpoint initialisation.
For now define it to 2 as that is sufficient for supporting the Apple
keyboards.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau
2024-04-04 08:25:50 +02:00
committed by Marek Vasut
parent f1820eb4f4
commit 086e461d9e
2 changed files with 25 additions and 12 deletions
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6
include/usb.h
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@@ -49,6 +49,12 @@ extern bool usb_started; /* flag for the started/stopped USB status */
*/
#define USB_TIMEOUT_MS(pipe) (usb_pipebulk(pipe) ? 5000 : 1000)
/*
* The xhcd hcd driver prepares only a limited number interfaces / endpoints.
* Define this limit so that drivers do not exceed it.
*/
#define USB_MAX_ACTIVE_INTERFACES 2
/* device request (setup) */
struct devrequest {
__u8 requesttype;