Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/firmware/usb.c
Daniel Stenberg 6b8cf08b6d Magnus Öman's rocking USB logo is now being put to use. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1891 a1c6a512-1295-4272-9138-f99709370657
2002-08-21 17:22:11 +00:00

373 lines
11 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "sh7034.h"
#include "kernel.h"
#include "thread.h"
#include "system.h"
#include "debug.h"
#include "ata.h"
#include "fat.h"
#include "disk.h"
#include "panic.h"
#include "lcd.h"
#include "adc.h"
#include "usb.h"
#include "button.h"
#include "sprintf.h"
extern void dbg_ports(void); /* NASTY! defined in apps/ */
#define USB_REALLY_BRAVE
#ifndef SIMULATOR
/* Messages from usb_tick */
#define USB_INSERTED 1
#define USB_EXTRACTED 2
/* Thread states */
#define EXTRACTING 1
#define EXTRACTED 2
#define INSERTED 3
#define INSERTING 4
/* The ADC tick reads one channel per tick, and we want to check 3 successive
readings on the USB voltage channel. This doesn't apply to the Player, but
debouncing the USB detection port won't hurt us either. */
#define NUM_POLL_READINGS (NUM_ADC_CHANNELS * 3)
static int countdown;
static int usb_state;
static char usb_stack[DEFAULT_STACK_SIZE];
static char usb_thread_name[] = "usb";
static struct event_queue usb_queue;
static bool last_usb_status;
static bool usb_monitor_enabled;
static bool usb_inverted;
static void usb_enable(bool on)
{
if(usb_inverted)
on = !on;
if(on)
PADR &= ~0x400; /* enable USB */
else
PADR |= 0x400;
PAIOR |= 0x400;
}
static void usb_slave_mode(bool on)
{
int rc;
struct partinfo* pinfo;
if(on)
{
DEBUGF("Entering USB slave mode\n");
ata_soft_reset();
ata_init();
ata_enable(false);
usb_enable(true);
}
else
{
DEBUGF("Leaving USB slave mode\n");
/* Let the ISDx00 settle */
sleep(HZ*1);
usb_enable(false);
rc = ata_init();
if(rc)
{
char str[32];
lcd_clear_display();
snprintf(str, 31, "ATA error: %d", rc);
lcd_puts(0, 0, str);
lcd_puts(0, 1, "Press ON to debug");
lcd_update();
while(button_get(true) != BUTTON_ON) {};
dbg_ports();
panicf("ata: %d",rc);
}
pinfo = disk_init();
if (!pinfo)
panicf("disk: NULL");
rc = fat_mount(pinfo[0].start);
if(rc)
panicf("mount: %d",rc);
}
}
static void usb_thread(void)
{
int num_acks_to_expect = -1;
bool waiting_for_ack;
struct event ev;
waiting_for_ack = false;
while(1)
{
queue_wait(&usb_queue, &ev);
switch(ev.id)
{
case USB_INSERTED:
/* Tell all threads that they have to back off the ATA.
We subtract one for our own thread. */
num_acks_to_expect =
queue_broadcast(SYS_USB_CONNECTED, NULL) - 1;
waiting_for_ack = true;
DEBUGF("USB inserted. Waiting for ack from %d threads...\n",
num_acks_to_expect);
break;
case SYS_USB_CONNECTED_ACK:
if(waiting_for_ack)
{
num_acks_to_expect--;
if(num_acks_to_expect == 0)
{
DEBUGF("All threads have acknowledged the connect.\n");
#ifdef USB_REALLY_BRAVE
usb_slave_mode(true);
usb_state = USB_INSERTED;
usb_display_info();
#else
system_reboot();
#endif
}
else
{
DEBUGF("usb: got ack, %d to go...\n",
num_acks_to_expect);
}
}
break;
case USB_EXTRACTED:
if(usb_state == USB_INSERTED)
{
/* Only disable the USB mode if we really have enabled it
some threads might not have acknowledged the
insertion */
usb_slave_mode(false);
}
usb_state = USB_EXTRACTED;
/* Tell all threads that we are back in business */
num_acks_to_expect =
queue_broadcast(SYS_USB_DISCONNECTED, NULL) - 1;
waiting_for_ack = true;
DEBUGF("USB extracted. Waiting for ack from %d threads...\n",
num_acks_to_expect);
break;
case SYS_USB_DISCONNECTED_ACK:
if(waiting_for_ack)
{
num_acks_to_expect--;
if(num_acks_to_expect == 0)
{
DEBUGF("All threads have acknowledged. "
"We're in business.\n");
}
else
{
DEBUGF("usb: got ack, %d to go...\n",
num_acks_to_expect);
}
}
break;
}
}
}
static void usb_tick(void)
{
bool current_status;
if(usb_monitor_enabled)
{
#ifdef ARCHOS_RECORDER
current_status = (adc_read(ADC_USB_POWER) > 500)?true:false;
#else
current_status = (PADR & 0x8000)?false:true;
#endif
/* Only report when the status has changed */
if(current_status != last_usb_status)
{
last_usb_status = current_status;
countdown = NUM_POLL_READINGS;
}
else
{
/* Count down until it gets negative */
if(countdown >= 0)
countdown--;
/* Report to the thread if we have had 3 identical status
readings in a row */
if(countdown == 0)
{
if(current_status)
queue_post(&usb_queue, USB_INSERTED, NULL);
else
queue_post(&usb_queue, USB_EXTRACTED, NULL);
}
}
}
}
void usb_acknowledge(int id)
{
queue_post(&usb_queue, id, NULL);
}
void usb_init(void)
{
usb_state = USB_EXTRACTED;
usb_monitor_enabled = false;
countdown = -1;
/* This is lame. Really lame. We determine the polarity of the USB
enable pin by checking how it is set by the Archos firmware. */
if(PADR & 0x400)
usb_inverted = false;
else
usb_inverted = true;
usb_enable(false);
/* We assume that the USB cable is extracted */
last_usb_status = false;
queue_init(&usb_queue);
create_thread(usb_thread, usb_stack, sizeof(usb_stack), usb_thread_name);
tick_add_task(usb_tick);
}
void usb_wait_for_disconnect(struct event_queue *q)
{
struct event ev;
/* Don't return until we get SYS_USB_DISCONNECTED */
while(1)
{
queue_wait(q, &ev);
if(ev.id == SYS_USB_DISCONNECTED)
{
usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
return;
}
}
}
void usb_start_monitoring(void)
{
usb_monitor_enabled = true;
}
#else
/* Dummy simulator functions */
void usb_acknowledge(int id)
{
id = id;
}
void usb_init(void)
{
}
void usb_start_monitoring(void)
{
}
#endif
#ifdef HAVE_LCD_BITMAP
#define BMPHEIGHT_usb_logo 32
#define BMPWIDTH_usb_logo 100
static unsigned char usb_logo[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x40, 0x20, 0x10, 0x08,
0x04, 0x04, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x81, 0x81, 0x81, 0x81,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0xf1, 0x4f, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0xc0,
0x00, 0x00, 0xe0, 0x1c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x06, 0x81, 0xc0, 0xe0, 0xe0, 0xe0, 0xe0,
0xc0, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc0, 0xe0, 0x70, 0x38, 0x1c, 0x1c,
0x0c, 0x0e, 0x0e, 0x06, 0x06, 0x06, 0x06, 0x06, 0x0f, 0x1f, 0x1f, 0x1f, 0x1f,
0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0xc0, 0xc0, 0x80, 0x80, 0x00, 0x00,
0x00, 0x00, 0xe0, 0x1f, 0x00, 0xf8, 0x06, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x82, 0x7e, 0x00, 0xc0, 0x3e, 0x01,
0x70, 0x4f, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
0x40, 0x40, 0x40, 0x40, 0x40, 0x80, 0x00, 0x07, 0x0f, 0x1f, 0x1f, 0x1f, 0x1f,
0x0f, 0x07, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x07, 0x0f,
0x1f, 0x3f, 0x7b, 0xf3, 0xe3, 0xc3, 0x83, 0x83, 0x83, 0x83, 0xe3, 0xe3, 0xe3,
0xe3, 0xe3, 0xe3, 0x03, 0x03, 0x03, 0x3f, 0x1f, 0x1f, 0x0f, 0x0f, 0x07, 0x02,
0xc0, 0x3e, 0x01, 0xe0, 0x9f, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0xf0, 0x0f, 0x80, 0x78, 0x07, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0c, 0x10, 0x20, 0x40, 0x40, 0x80, 0x80,
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x80, 0x80, 0x81, 0x81, 0x81, 0x81, 0x81, 0x87, 0x87, 0x87,
0x87, 0x87, 0x87, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xf0,
0x0f, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x04, 0x04, 0x04, 0x07, 0x00, 0x00, 0x00, 0x00,
};
#endif
void usb_display_info(void)
{
lcd_stop_scroll();
lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
/* lcd_bitmap() only supports 16 pixels height! */
lcd_bitmap(usb_logo, 6, 16,
BMPWIDTH_usb_logo, 8, false);
lcd_bitmap(usb_logo+BMPWIDTH_usb_logo, 6, 24,
BMPWIDTH_usb_logo, 8, false);
lcd_bitmap(usb_logo+BMPWIDTH_usb_logo*2, 6, 32,
BMPWIDTH_usb_logo, 8, false);
lcd_bitmap(usb_logo+BMPWIDTH_usb_logo*3, 6, 40,
BMPWIDTH_usb_logo, 8, false);
lcd_update();
#else
lcd_puts(0, 0, "[USB Mode]");
#endif
}
Reference in a new issue View git blame Copy permalink