On 11/13/2015 06:16 PM, Marek Vasut wrote:
On Friday, November 13, 2015 at 09:34:09 PM, Stephen Warren wrote:
From: Stephen Warren <swar...@nvidia.com>
When CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP is enabled, use a
GET_REPORT control transfer to retrieve the initial state of the
keyboard. This matches the technique used to poll the keyboard state.
This is useful since it eliminates the remaining use of interrupt
transfers from the USB keyboard driver, which allows it to work with
USB HCD that don't support interrupt transfers.
Cc: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Stephen Warren <swar...@nvidia.com>
---
Are there any disadvantages to using control transfers over interrupt
transfers? I'm not aware of any, but I assume there must be a reason
that U-Boot typically uses interrupt transfers.
I initially implemented the control EP polling because I had a keyboard
which had issues with interrupt transfers.
Reviewed-by: Marek Vasut <ma...@denx.de>
Did you intend someone else to apply this?
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