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e200: Better power_off to lock the system down while waiting for PMU to cut power.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13809 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-07-07 03:51:50 +00:00
parent 276ff3bceb
commit 68f975be85
1 changed files with 17 additions and 2 deletions
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17
firmware/target/arm/sandisk/sansa-e200/power-e200.c
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@ -18,6 +18,7 @@
****************************************************************************/
#include <stdbool.h>
#include "system.h"
#include "cpu.h"
#include "i2c-pp.h"
@ -28,11 +29,25 @@ void power_init(void)
void power_off(void)
{
char byte;
/* Disable interrupts on this core */
set_interrupt_status(IRQ_FIQ_DISABLED, IRQ_FIQ_STATUS);
/* Mask them on both cores */
CPU_INT_CLR = -1;
COP_INT_CLR = -1;
/* Send shutdown command to PMU */
byte = i2c_readbyte(0x46, 0x20);
byte &= ~0x1;
pp_i2c_send(0x46, 0x20, byte);
while(1); /* Wait for device to power off */
/* Halt everything and wait for device to power off */
while (1)
{
CPU_CTL = PROC_SLEEP;
COP_CTL = PROC_SLEEP;
}
}
bool charger_inserted(void)