From ebd3da7dba7d72b0d7a4fa50ffbad61259562447 Mon Sep 17 00:00:00 2001 From: Yunzhi Li Date: Thu, 2 Jul 2015 15:28:11 +0800 Subject: libpayload: usb: dwc2: support split transaction With split transaction, dwc2 host controller can handle full- and low-speed devices on hub in high-speed mode. This commit adds support for split control and interrupt transfers BUG=None TEST=Connect usb keyboard through hub, usb keyboard can work BRANCH=None Change-Id: If7a00db21c8ad4c635f39581382b877603075d1a Signed-off-by: Patrick Georgi Original-Commit-Id: 4fb514b7f7f7e414fa94bfce05420957b1c57019 Original-Change-Id: I07e64064c6182d33905ae4efb13712645de7cf93 Original-Signed-off-by: Yunzhi Li Original-Reviewed-on: https://chromium-review.googlesource.com/283282 Original-Tested-by: Lin Huang Original-Commit-Queue: Lin Huang Original-Reviewed-by: Julius Werner Reviewed-on: http://review.coreboot.org/10956 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- payloads/libpayload/drivers/usb/ehci.c | 24 ------------------------ 1 file changed, 24 deletions(-) (limited to 'payloads/libpayload/drivers/usb/ehci.c') diff --git a/payloads/libpayload/drivers/usb/ehci.c b/payloads/libpayload/drivers/usb/ehci.c index 0aa799d09c..4636e7cc03 100644 --- a/payloads/libpayload/drivers/usb/ehci.c +++ b/payloads/libpayload/drivers/usb/ehci.c @@ -194,30 +194,6 @@ static void ehci_shutdown (hci_t *controller) enum { EHCI_OUT=0, EHCI_IN=1, EHCI_SETUP=2 }; -/* - * returns the address of the closest USB2.0 hub, which is responsible for - * split transactions, along with the number of the used downstream port - */ -static int closest_usb2_hub(const usbdev_t *dev, int *const addr, int *const port) -{ - const usbdev_t *usb1dev; - do { - usb1dev = dev; - if ((dev->hub >= 0) && (dev->hub < 128)) - dev = dev->controller->devices[dev->hub]; - else - dev = NULL; - } while (dev && (dev->speed < 2)); - if (dev) { - *addr = usb1dev->hub; - *port = usb1dev->port; - return 0; - } else { - usb_debug("ehci: Couldn't find closest USB2.0 hub.\n"); - return 1; - } -} - /* returns handled bytes. assumes that the fields it writes are empty on entry */ static int fill_td(qtd_t *td, void* data, int datalen) { -- cgit v1.2.3