7abf2b53a4
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657
135 lines
3.4 KiB
C
135 lines
3.4 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) 2006 by Linus Nielsen Feltzing
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 "config.h"
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#include "cpu.h"
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#include "system.h"
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#include "kernel.h"
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#include "ata.h"
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#include "usb.h"
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#include "usb_core.h"
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#include "usb_drv.h"
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#include "usb-target.h"
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#include "mc13783.h"
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#include "ccm-imx31.h"
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#include "avic-imx31.h"
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#include "power-gigabeat-s.h"
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static int usb_status = USB_EXTRACTED;
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static void enable_transceiver(bool enable)
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{
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if (enable)
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{
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if (GPIO1_DR & (1 << 30))
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{
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imx31_regclr32(&GPIO3_DR, (1 << 16)); /* Reset ISP1504 */
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sleep(HZ/100);
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imx31_regset32(&GPIO3_DR, (1 << 16));
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sleep(HZ/10);
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imx31_regclr32(&GPIO1_DR, (1 << 30)); /* Select ISP1504 */
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}
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}
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else
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{
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imx31_regset32(&GPIO1_DR, (1 << 30)); /* Deselect ISP1504 */
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}
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}
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/* Read the immediate state of the cable from the PMIC */
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bool usb_plugged(void)
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{
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return mc13783_read(MC13783_INTERRUPT_SENSE0) & MC13783_USB4V4S;
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}
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void usb_connect_event(void)
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{
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int status = usb_plugged() ? USB_INSERTED : USB_EXTRACTED;
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usb_status = status;
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/* Notify power that USB charging is potentially available */
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charger_usb_detect_event(status);
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usb_status_event((status == USB_INSERTED) ? USB_POWERED : USB_UNPOWERED);
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}
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int usb_detect(void)
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{
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return usb_status;
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}
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void usb_init_device(void)
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{
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/* Do one-time inits */
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usb_drv_startup();
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/* Initially poll */
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usb_connect_event();
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/* Enable PMIC event */
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mc13783_enable_event(MC13783_USB_EVENT);
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}
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void usb_enable(bool on)
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{
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/* Module clock should be on since since this could be called with
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* OFF initially and writing module registers would hardlock otherwise. */
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ccm_module_clock_gating(CG_USBOTG, CGM_ON_RUN_WAIT);
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enable_transceiver(true);
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if (on)
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{
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usb_core_init();
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}
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else
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{
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usb_core_exit();
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enable_transceiver(false);
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ccm_module_clock_gating(CG_USBOTG, CGM_OFF);
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}
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}
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void usb_attach(void)
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{
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usb_drv_attach();
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}
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static void __attribute__((interrupt("IRQ"))) USB_OTG_HANDLER(void)
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{
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usb_drv_int(); /* Call driver handler */
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}
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void usb_drv_int_enable(bool enable)
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{
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if (enable)
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{
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avic_enable_int(INT_USB_OTG, INT_TYPE_IRQ, INT_PRIO_DEFAULT,
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USB_OTG_HANDLER);
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}
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else
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{
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avic_disable_int(INT_USB_OTG);
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}
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}
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/* Called during the bus reset interrupt when in detect mode */
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void usb_drv_usb_detect_event(void)
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{
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if (usb_drv_powered())
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usb_status_event(USB_INSERTED);
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}
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