8d0126f355
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18091 a1c6a512-1295-4272-9138-f99709370657
104 lines
2.9 KiB
C
104 lines
2.9 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) 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 "clkctl-imx31.h"
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#include "mc13783.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_regmod32(&GPIO3_DR, 0, (1 << 16)); /* Reset ISP1504 */
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sleep(HZ/100);
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imx31_regmod32(&GPIO3_DR, (1 << 16), (1 << 16));
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sleep(HZ/10);
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imx31_regmod32(&GPIO1_DR, 0, (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_regmod32(&GPIO1_DR, (1 << 30), (1 << 30)); /* Deselect ISP1504 */
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}
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}
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void usb_connect_event(void)
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{
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uint32_t status = mc13783_read(MC13783_INTERRUPT_SENSE0);
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usb_status = (status & MC13783_USB4V4S) ? USB_INSERTED : USB_EXTRACTED;
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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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/* 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_init_device(void)
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{
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imx31_clkctl_module_clock_gating(CG_USBOTG, CGM_ON_ALL);
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enable_transceiver(true);
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/* Module will be turned off later after firmware init */
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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_USB4V4_EVENT);
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}
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void usb_enable(bool on)
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{
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if (on)
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{
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imx31_clkctl_module_clock_gating(CG_USBOTG, CGM_ON_ALL);
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enable_transceiver(true);
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usb_core_init();
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}
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else
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{
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/* Module clock should be on since this could be called first */
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imx31_clkctl_module_clock_gating(CG_USBOTG, CGM_ON_ALL);
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enable_transceiver(true);
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usb_core_exit();
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enable_transceiver(false);
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imx31_clkctl_module_clock_gating(CG_USBOTG, CGM_OFF);
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}
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}
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