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Patch #5639 by Ulrich Pegelow, inits the M5636 USBOTG chip on the X5 to reduce the battery consumption.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10208 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2006-07-13 07:40:30 +00:00
parent ac13e52522
commit 5f655c93f9
9 changed files with 172 additions and 1 deletions
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37
firmware/target/coldfire/iaudio/x5/m5636-target.h Executable file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Ulrich Pegelow
*
* 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.
*
****************************************************************************/
#ifndef M5636_TARGET_H
#define M5636_TARGET_H
#define M5636_BASE 0xf0004000L /* Rockbox: 0xf0004000; OF: 0x20004000 */
/* We are currently lacking a datasheet for the M5636. No mnemonics available.
The registers are named according to their respective hexadecimal offsets.
*/
#define M5636_4064 (*(volatile unsigned short *)(M5636_BASE + 0x64L))
#define M5636_4068 (*(volatile unsigned short *)(M5636_BASE + 0x68L))
#define M5636_4078 (*(volatile unsigned short *)(M5636_BASE + 0x78L))
extern void m5636_device_init(void);
/* for debugging purposes only */
extern void m5636_dump_regs(void);
#endif

50
firmware/target/coldfire/iaudio/x5/m5636-x5.c Executable file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Ulrich Pegelow
*
* 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 "system.h"
#include "logf.h"
#include "m5636-target.h"
void m5636_device_init(void)
{
and_l(~0x00004000, &GPIO_INT_EN); /* probably redundant: disable
interrupt; just in case ... */
and_l(~0x00000004, &GPIO1_OUT); /* probably redundant: set GPIO34 low */
or_l( 0x00000004, &GPIO1_ENABLE); /* GPIO34 enable (see above) */
or_l( 0x00000004, &GPIO1_FUNCTION); /* GPIO34 function (see above) */
}
/* for debugging purposes only */
void m5636_dump_regs(void)
{
unsigned short *address;
for (address = (unsigned short *)M5636_BASE;
address < (unsigned short *)(M5636_BASE + 0x100);
address++)
{
logf("m5636 A:%08x D:%04x", address, (unsigned)*address);
}
logf("GPIO_INT_EN %08x", GPIO_INT_EN);
logf("GPIO1_OUT %08x", GPIO1_OUT);
logf("GPIO1_ENABLE %08x", GPIO1_ENABLE);
logf("GPIO1_FUNCTION %08x", GPIO1_FUNCTION);
}