From 4b54302b0713be2995a33cfa30d1615fc206f1eb Mon Sep 17 00:00:00 2001
From: Barry Wardell <rockbox@barrywardell.net>
Date: Wed, 20 Dec 2006 15:28:32 +0000
Subject: Combine USB code for all PortalPlayer targets since they most likely
 all use the same USB hardware. Add register defines for the USB hardware
 addresses, based off the Freescale i.MX31 datasheet. Use usb_init() from the
 iPod code, but modified to use the new register defines rather than oul/inl
 on the hardware addresses.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11823 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/arm/usb-pp.c | 136 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 firmware/target/arm/usb-pp.c

(limited to 'firmware/target/arm/usb-pp.c')

diff --git a/firmware/target/arm/usb-pp.c b/firmware/target/arm/usb-pp.c
new file mode 100644
index 0000000000..f8d0a836ad
--- /dev/null
+++ b/firmware/target/arm/usb-pp.c
@@ -0,0 +1,136 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * iPod driver based on code from the ipodlinux project - http://ipodlinux.org
+ * Adapted for Rockbox in January 2006
+ * Original file: podzilla/usb.c
+ * Copyright (C) 2005 Adam Johnston
+ *
+ * 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 "cpu.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"
+#include "string.h"
+#include "hwcompat.h"
+
+#include "usb-target.h"
+ 
+void usb_init_device(void)
+{
+    int r0;
+    outl(inl(0x70000084) | 0x200, 0x70000084);
+
+    outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
+    DEV_EN |= DEV_USB;
+
+    DEV_RS |= DEV_USB; /* reset usb start */
+    DEV_RS &=~DEV_USB;/* reset usb end */
+
+    DEV_INIT |= INIT_USB;
+    while ((inl(0x70000028) & 0x80) == 0);
+
+    UOG_PORTSC1 |= 0x100;
+    while ((UOG_PORTSC1 & 0x100) != 0);
+
+    UOG_OTGSC |= 0x5F000000;
+    if( (UOG_OTGSC & 0x100) == 0) {
+        UOG_USBMODE &=~ 0x3;
+        UOG_USBMODE |= 0x2;
+        outl(inl(0x70000028) | 0x4000, 0x70000028);
+        outl(inl(0x70000028) | 0x2, 0x70000028);
+    } else {
+        UOG_USBMODE |= 0x2;
+        outl(inl(0x70000028) &~0x4000, 0x70000028);
+        outl(inl(0x70000028) | 0x2, 0x70000028);
+    }
+    UOG_USBCMD |= 0x2;
+    while((UOG_USBCMD & 0x2) != 0);
+    r0 = UOG_PORTSC1;
+
+    /* Note from IPL source (referring to next 5 lines of code: 
+       THIS NEEDS TO BE CHANGED ONCE THERE IS KERNEL USB */
+    outl(inl(0x70000020) | 0x80000000, 0x70000020);
+    DEV_EN |= DEV_USB;
+    while ((inl(0x70000028) & 0x80) == 0);
+    outl(inl(0x70000028) | 0x2, 0x70000028);
+
+    udelay(0x186A0);
+}
+
+void usb_enable(bool on)
+{
+    /* This device specific code will eventually give way to proper USB
+       handling, which should be the same for all PortalPlayer targets. */
+    if (on)
+    {
+#if IPOD_ARCH || defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
+        /* For the H10 and iPod, we can only do one thing with USB mode - reboot
+           into the flash-based disk-mode.  This does not return. */
+       
+        /* The following code is copied from ipodlinux */
+#if defined(IPOD_COLOR) || defined(IPOD_3G) || \
+    defined(IPOD_4G) || defined(IPOD_MINI)
+        unsigned char* storage_ptr = (unsigned char *)0x40017F00;
+#elif defined(IPOD_NANO) || defined(IPOD_VIDEO) || defined(IPOD_MINI2G)
+        unsigned char* storage_ptr = (unsigned char *)0x4001FF00;
+#endif
+
+#if defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
+        if(button_status()==BUTTON_RIGHT)
+#endif
+        {
+            ata_sleepnow(); /* Immediately spindown the disk. */
+            sleep(HZ*2);
+#ifdef IPOD_ARCH
+            memcpy(storage_ptr, "diskmode\0\0hotstuff\0\0\1", 21);
+#endif
+            system_reboot(); /* Reboot */
+        }
+#endif
+    }
+}
+
+bool usb_detect(void)
+{
+    bool current_status;
+
+    /* UOG_ID should have the bit format:
+        [31:24] = 0x0
+        [23:16] = 0x22 (Revision number)
+        [15:14] = 0x3 (Reserved)
+        [13:8]  = 0x3a (NID - 1's compliment of ID)
+        [7:6]   = 0x0 (Reserved)
+        [5:0]   = 0x05 (ID) */
+    if (UOG_ID != 0x22FA05) {
+        return false;
+    }
+    current_status = (UOG_OTGSC & 0x800)?true:false;
+    
+    return current_status;
+}
-- 
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