137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Barry Wardell
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*
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* Based on code from the Linux Target Image Builder from Freescale
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* available at http://www.bitshrine.org/ and
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* http://www.bitshrine.org/gpp/linux-2.6.16-mx31-usb-2.patch
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* Adapted for Rockbox in January 2007
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* Original file: drivers/usb/gadget/arcotg_udc.c
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*
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* USB Device Controller Driver
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* Driver for ARC OTG USB module in the i.MX31 platform, etc.
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*
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* Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* Based on mpc-udc.h
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* Author: Li Yang (leoli@freescale.com)
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* Jiang Bo (Tanya.jiang@freescale.com)
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "arcotg_udc.h"
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#include "logf.h"
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#include "errno.h"
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static int timeout;
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/* @qh_addr is the aligned virt addr of ep QH addr
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* it is used to set endpointlistaddr Reg */
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/* was static int dr_controller_setup(void *qh_addr) */
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int dr_controller_setup(void)
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{
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#if 0
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struct arc_usb_config *config;
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config = udc_controller->config;
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/* before here, make sure usb_slave_regs has been initialized */
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if (!qh_addr)
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return -EINVAL;
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#endif
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/* Stop and reset the usb controller */
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UDC_USBCMD &= ~USB_CMD_RUN;
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UDC_USBCMD |= USB_CMD_CTRL_RESET;
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/* Wait for reset to complete */
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timeout = 10000000;
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while ((UDC_USBCMD & USB_CMD_CTRL_RESET) &&
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--timeout) {
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continue;
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}
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if (timeout == 0) {
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logf("%s: TIMEOUT", __FUNCTION__);
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return -ETIMEDOUT;
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}
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/* Set the controller as device mode and disable setup lockout */
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UDC_USBMODE |= (USB_MODE_CTRL_MODE_DEVICE | USB_MODE_SETUP_LOCK_OFF);
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/* Clear the setup status */
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UDC_USBSTS = 0;
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#if 0
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UDC_ENDPOINTLISTADDR = (unsigned int)qh_addr & USB_EP_LIST_ADDRESS_MASK;
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VDBG("qh_addr=0x%x epla_reg=0x%8x", qh_addr, UOG_ASYNCLISTADDR);
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#endif
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UDC_PORTSC1 = (UDC_PORTSC1 & ~PORTSCX_PHY_TYPE_SEL) | PORTSCX_PTS_UTMI;
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#if 0
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if (config->set_vbus_power)
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config->set_vbus_power(0);
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#endif
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return 0;
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}
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/* just Enable DR irq reg and Set Dr controller Run */
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/* was static void dr_controller_run(struct arcotg_udc *udc) */
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void dr_controller_run(void)
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{
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/*Enable DR irq reg */
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UDC_USBINTR = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN |
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USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN |
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USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
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#if 0
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/* Clear stopped bit */
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udc->stopped = 0;
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#endif
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/* Set the controller as device mode */
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UDC_USBMODE |= USB_MODE_CTRL_MODE_DEVICE;
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/* Set controller to Run */
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UDC_USBCMD |= USB_CMD_RUN;
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return;
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}
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/* just Enable DR irq reg and Set Dr controller Run */
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/* was static void dr_controller_stop(struct arcotg_udc *udc) */
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void dr_controller_stop(void)
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{
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#if 0
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/* if we're in OTG mode, and the Host is currently using the port,
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* stop now and don't rip the controller out from under the
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* ehci driver
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*/
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if (udc->gadget.is_otg) {
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if (!(UDC_OTGSC & OTGSC_STS_USB_ID)) {
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logf("Leaving early");
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return;
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}
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}
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#endif
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/* disable all INTR */
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UDC_USBINTR = 0;
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#if 0
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/* Set stopped bit */
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udc->stopped = 1;
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#endif
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/* Set controller to Stop */
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UDC_USBCMD &= ~USB_CMD_RUN;
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}
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