From e4b70d80350c1238fa07872d71c19e3ddbf53b76 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 13 Nov 2015 13:34:09 -0700 Subject: [PATCH] usb: kbd: don't use int xfers when polling via ctrl xfers 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 Signed-off-by: Stephen Warren --- common/usb_kbd.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/common/usb_kbd.c b/common/usb_kbd.c index 069fbd2..9617a48 100644 --- a/common/usb_kbd.c +++ b/common/usb_kbd.c @@ -476,6 +476,9 @@ static int usb_kbd_probe_dev(struct usb_device *dev, unsigned int ifnum) USB_KBD_BOOT_REPORT_SIZE, data->new, data->intinterval); if (!data->intq) { +#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) + if (usb_get_report(dev, iface->desc.bInterfaceNumber, + 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE) < 0) { #else if (usb_submit_int_msg(dev, data->intpipe, data->new, data->intpktsize, data->intinterval) < 0) { -- 2.7.4