289 lines
8.0 KiB
C
289 lines
8.0 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) 2002 by Linus Nielsen Feltzing
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*
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* iPod driver based on code from the ipodlinux project - http://ipodlinux.org
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* Adapted for Rockbox in January 2006
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* Original file: podzilla/usb.c
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* Copyright (C) 2005 Adam Johnston
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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 "system.h"
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#include "usb.h"
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#include "button.h"
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#include "ata.h"
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#include "string.h"
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#include "usb_core.h"
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#include "usb_drv.h"
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#if defined(IPOD_4G) || defined(IPOD_COLOR) \
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|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
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/* GPIO D bit 3 is usb detect */
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#define USB_GPIO GPIOD
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#define USB_GPIO_MASK 0x08
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#define USB_GPIO_VAL 0x08
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#elif defined(IPOD_NANO) || defined(IPOD_VIDEO)
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/* GPIO L bit 4 is usb detect */
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#define USB_GPIO GPIOL
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#define USB_GPIO_MASK 0x10
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#define USB_GPIO_VAL 0x10
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#elif defined(SANSA_C200)
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/* GPIO H bit 1 is usb/charger detect */
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#define USB_GPIO GPIOH
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#define USB_GPIO_MASK 0x02
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#define USB_GPIO_VAL 0x02
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#elif defined(SANSA_E200)
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/* GPIO B bit 4 is usb/charger detect */
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#define USB_GPIO GPIOB
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#define USB_GPIO_MASK 0x10
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#define USB_GPIO_VAL 0x10
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#elif defined(IRIVER_H10) || defined(IRIVER_H10_5GB) || defined(MROBE_100)
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/* GPIO L bit 2 is usb detect */
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#define USB_GPIO GPIOL
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#define USB_GPIO_MASK 0x04
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#define USB_GPIO_VAL 0x04
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#elif defined(PHILIPS_SA9200)
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/* GPIO B bit 6 (high) is usb bus power detect */
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#define USB_GPIO GPIOB
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#define USB_GPIO_MASK 0x40
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#define USB_GPIO_VAL 0x40
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#elif defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330)
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/* GPIO E bit 2 is usb detect */
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#define USB_GPIO GPIOE
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#define USB_GPIO_MASK 0x04
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#define USB_GPIO_VAL 0x04
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#elif defined(SAMSUNG_YH820) || defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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/* GPIO D bit 4 is usb detect */
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#define USB_GPIO GPIOD
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#define USB_GPIO_MASK 0x10
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#define USB_GPIO_VAL 0x10
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#elif defined(PBELL_VIBE500)
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/* GPIO L bit 3 is usb detect */
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#define USB_GPIO GPIOL
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#define USB_GPIO_MASK 0x04
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#define USB_GPIO_VAL 0x04
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#elif defined(SANSA_VIEW)
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/* GPIO A bit 7 is usb detect */
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#define USB_GPIO GPIOA
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#define USB_GPIO_MASK 0x80
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#define USB_GPIO_VAL 0x80
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#else
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#error No USB GPIO config specified
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#endif
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#define USB_GPIO_ENABLE GPIO_ENABLE(USB_GPIO)
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#define USB_GPIO_OUTPUT_EN GPIO_OUTPUT_EN(USB_GPIO)
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#define USB_GPIO_INPUT_VAL GPIO_INPUT_VAL(USB_GPIO)
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#define USB_GPIO_INT_EN GPIO_INT_EN(USB_GPIO)
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#define USB_GPIO_INT_LEV GPIO_INT_LEV(USB_GPIO)
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#define USB_GPIO_INT_CLR GPIO_INT_CLR(USB_GPIO)
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#define USB_GPIO_HI_INT_MASK GPIO_HI_INT_MASK(USB_GPIO)
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static void usb_reset_controller(void)
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{
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/* enable usb module */
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outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
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DEV_EN |= DEV_USB0;
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DEV_EN |= DEV_USB1;
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/* reset both USBs */
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DEV_RS |= DEV_USB0;
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DEV_RS &=~DEV_USB0;
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DEV_RS |= DEV_USB1;
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DEV_RS &=~DEV_USB1;
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DEV_INIT2 |= INIT_USB;
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while ((inl(0x70000028) & 0x80) == 0);
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outl(inl(0x70000028) | 0x2, 0x70000028);
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udelay(100000);
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XMB_RAM_CFG |= 0x47A;
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/* disable USB-devices until USB is detected via GPIO */
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#ifndef BOOTLOADER
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/* Disabling USB0 in the bootloader makes the OF not load,
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Also something here breaks usb pin detect in bootloader.
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leave it all enabled untill rockbox main loads */
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DEV_EN &= ~DEV_USB0;
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DEV_EN &= ~DEV_USB1;
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DEV_INIT2 &= ~INIT_USB;
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#endif
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}
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/* Enable raw status pin read only - not interrupt */
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void usb_pin_init(void)
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{
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GPIO_CLEAR_BITWISE(USB_GPIO_OUTPUT_EN, USB_GPIO_MASK);
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GPIO_SET_BITWISE(USB_GPIO_ENABLE, USB_GPIO_MASK);
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#ifdef USB_FIREWIRE_HANDLING
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/* GPIO C bit 1 is firewire detect */
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GPIO_CLEAR_BITWISE(GPIOC_OUTPUT_EN, 0x02);
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GPIO_SET_BITWISE(GPIOC_ENABLE, 0x02);
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#endif
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}
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void usb_init_device(void)
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{
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usb_reset_controller();
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/* Do one-time inits (no dependency on controller) */
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usb_drv_startup();
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usb_pin_init();
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/* These set INT_LEV to the inserted level so it will fire if already
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* inserted at the time they are enabled. */
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#ifdef USB_STATUS_BY_EVENT
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GPIO_CLEAR_BITWISE(USB_GPIO_INT_EN, USB_GPIO_MASK);
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GPIO_WRITE_BITWISE(USB_GPIO_INT_LEV, USB_GPIO_VAL, USB_GPIO_MASK);
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USB_GPIO_INT_CLR = USB_GPIO_MASK;
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GPIO_SET_BITWISE(USB_GPIO_INT_EN, USB_GPIO_MASK);
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CPU_HI_INT_EN = USB_GPIO_HI_INT_MASK;
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#ifdef USB_FIREWIRE_HANDLING
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/* GPIO C bit 1 is firewire detect */
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GPIO_CLEAR_BITWISE(GPIOC_INT_EN, 0x02);
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GPIO_WRITE_BITWISE(GPIOC_INT_LEV, 0x00, 0x02);
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GPIOC_INT_CLR = 0x02;
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GPIO_SET_BITWISE(GPIOC_INT_EN, 0x02);
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CPU_HI_INT_EN = GPIO0_MASK;
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#endif
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CPU_INT_EN = HI_MASK;
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#endif /* USB_STATUS_BY_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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/* if USB is detected, re-enable the USB-devices, otherwise make sure it's disabled */
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DEV_EN |= DEV_USB0;
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DEV_EN |= DEV_USB1;
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DEV_INIT2 |= INIT_USB;
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usb_core_init();
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}
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else {
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usb_core_exit();
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/* Disable USB devices */
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usb_reset_controller();
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}
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}
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void usb_attach(void)
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{
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#if defined(IPOD_VIDEO)
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/* FIXME: Some iPod Video's need this 2nd call of usb_drv_init() to establish
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* an USB connection. */
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usb_drv_init();
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#endif
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}
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bool usb_plugged(void)
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{
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return (USB_GPIO_INPUT_VAL & USB_GPIO_MASK) == USB_GPIO_VAL;
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}
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#ifdef USB_STATUS_BY_EVENT
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/* Cannot always tell power pin from USB pin */
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static int usb_status = USB_EXTRACTED;
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static int usb_timeout_event(struct timeout *tmo)
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{
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usb_status_event(tmo->data == USB_GPIO_VAL ? USB_INSERTED : USB_EXTRACTED);
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return 0;
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}
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void usb_insert_int(void)
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{
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static struct timeout usb_oneshot;
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unsigned long val = USB_GPIO_INPUT_VAL & USB_GPIO_MASK;
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usb_status = (val == USB_GPIO_VAL) ? USB_INSERTED : USB_EXTRACTED;
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GPIO_WRITE_BITWISE(USB_GPIO_INT_LEV, val ^ USB_GPIO_MASK, USB_GPIO_MASK);
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USB_GPIO_INT_CLR = USB_GPIO_MASK;
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timeout_register(&usb_oneshot, usb_timeout_event, HZ/5, val);
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}
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#endif /* USB_STATUS_BY_EVENT */
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void usb_drv_int_enable(bool enable)
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{
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/* enable/disable USB IRQ in CPU */
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if(enable) {
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CPU_INT_EN = USB_MASK;
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}
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else {
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CPU_INT_DIS = USB_MASK;
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}
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}
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/* detect host or charger (INSERTED or EXTRACTED) */
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int usb_detect(void)
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{
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#ifdef USB_STATUS_BY_EVENT
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return usb_status;
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#else
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return usb_plugged() ? USB_INSERTED : USB_EXTRACTED;
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#endif
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}
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#ifdef USB_FIREWIRE_HANDLING
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#ifdef USB_STATUS_BY_EVENT
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static bool firewire_status = false;
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#endif
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bool firewire_detect(void)
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{
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#ifdef USB_STATUS_BY_EVENT
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return firewire_status;
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#else
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/* GPIO C bit 1 is firewire detect */
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/* no charger detection needed for firewire */
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return (GPIOC_INPUT_VAL & 0x02) == 0x00;
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#endif
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}
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#ifdef USB_STATUS_BY_EVENT
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static int firewire_timeout_event(struct timeout *tmo)
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{
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if (tmo->data == 0x00)
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usb_firewire_connect_event();
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return 0;
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}
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void firewire_insert_int(void)
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{
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static struct timeout firewire_oneshot;
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unsigned long val = GPIOC_INPUT_VAL & 0x02;
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firewire_status = val == 0x00;
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GPIO_WRITE_BITWISE(GPIOC_INT_LEV, val ^ 0x02, 0x02);
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GPIOC_INT_CLR = 0x02;
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timeout_register(&firewire_oneshot, firewire_timeout_event, HZ/5, val);
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}
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#endif /* USB_STATUS_BY_EVENT */
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#endif /* USB_FIREWIRE_HANDLING */
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