43eda43c20
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1258 a1c6a512-1295-4272-9138-f99709370657
125 lines
2.9 KiB
C
125 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) 2002 by Linus Nielsen Feltzing
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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 "config.h"
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#include "sh7034.h"
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#include "kernel.h"
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#include "thread.h"
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#include "system.h"
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#include "debug.h"
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#ifndef SIMULATOR
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#define USB_INSERTED 1
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#define USB_EXTRACTED 2
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static char usb_stack[0x100];
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static struct event_queue usb_queue;
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static bool usb_connected;
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static void usb_thread(void)
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{
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int num_acks_to_expect = -1;
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bool waiting_for_ack;
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struct event ev;
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waiting_for_ack = false;
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while(1)
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{
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queue_wait(&usb_queue, &ev);
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switch(ev.id)
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{
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case USB_INSERTED:
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/* Tell all threads that they have to back off the ATA.
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We subtract one for our own thread. */
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num_acks_to_expect = queue_broadcast(SYS_USB_CONNECTED, NULL) - 1;
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waiting_for_ack = true;
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DEBUGF("USB inserted. Waiting for ack from %d threads...\n");
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break;
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case SYS_USB_CONNECTED_ACK:
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if(waiting_for_ack)
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{
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num_acks_to_expect--;
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if(num_acks_to_expect == 0)
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{
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/* This is where we are supposed to be cool and keep
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the Rockbox firmware running while the USB is enabled,
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maybe even play some games and stuff. However, the
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current firmware isn't quite ready for this yet.
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Let's just chicken out and reboot. */
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DEBUGF("All threads have acknowledged. Rebooting...\n");
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system_reboot();
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}
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else
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{
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DEBUGF("usb: got ack, %d to go...\n", num_acks_to_expect);
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}
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}
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}
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}
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}
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static void usb_tick(void)
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{
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bool current_status;
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#ifdef ARCHOS_RECORDER
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current_status = (PCDR & 0x04)?true:false;
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#else
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current_status = (PADR & 0x8000)?false:true;
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#endif
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if(current_status && !usb_connected)
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{
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usb_connected = true;
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queue_post(&usb_queue, USB_INSERTED, NULL);
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}
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}
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void usb_acknowledge(int id)
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{
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queue_post(&usb_queue, id, NULL);
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}
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void usb_init(void)
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{
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int rc;
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usb_connected = false;
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queue_init(&usb_queue);
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create_thread(usb_thread, usb_stack, sizeof(usb_stack));
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rc = tick_add_task(usb_tick);
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}
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#else
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/* Dummy simulator functions */
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void usb_acknowledge(int id)
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{
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id = id;
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}
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void usb_init(void)
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{
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}
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#endif
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