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Enable iPod Nano 2G boosting (without undervolting for now)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24721 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sparmann 2010-02-17 15:54:48 +00:00
parent 48e38b8759
commit 8f33879fed
4 changed files with 66 additions and 27 deletions
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16
firmware/target/arm/s5l8700/ipodnano2g/pmu-nano2g.c
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@ -24,16 +24,15 @@
#include "i2c-s5l8700.h"
static struct mutex pmu_adc_mutex;
int pmu_initialized = 0;
void pmu_read_multiple(int address, int count, unsigned char* buffer)
int pmu_read_multiple(int address, int count, unsigned char* buffer)
{
i2c_read(0xe6, address, count, buffer);
return i2c_read(0xe6, address, count, buffer);
}
void pmu_write_multiple(int address, int count, unsigned char* buffer)
int pmu_write_multiple(int address, int count, unsigned char* buffer)
{
i2c_write(0xe6, address, count, buffer);
return i2c_write(0xe6, address, count, buffer);
}
unsigned char pmu_read(int address)
@ -45,22 +44,19 @@ unsigned char pmu_read(int address)
return tmp;
}
void pmu_write(int address, unsigned char val)
int pmu_write(int address, unsigned char val)
{
pmu_write_multiple(address, 1, &val);
return pmu_write_multiple(address, 1, &val);
}
void pmu_init(void)
{
if (pmu_initialized) return;
mutex_init(&pmu_adc_mutex);
pmu_initialized = 1;
}
int pmu_read_adc(unsigned int adc)
{
int data = 0;
if (!pmu_initialized) pmu_init();
mutex_lock(&pmu_adc_mutex);
pmu_write(0x54, 5 | (adc << 4));
while ((data & 0x80) == 0)