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rk2928:a713:support act8931 dc detection

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This commit is contained in:
张晴
2012-09-26 18:49:00 +08:00
parent 99bb88c41e
commit 5ceae838de
1 changed files with 21 additions and 0 deletions
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21
arch/arm/mach-rk2928/i2c_sram.c
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@@ -349,6 +349,23 @@ void __sramfunc rk30_suspend_voltage_resume(unsigned int vol)
sram_i2c_write(slaveaddr, slavereg, data);
sram_i2c_deinit(); //deinit i2c device
}
int __sramfunc act8931_dc_det(unsigned int vol)
{
uint8 slaveaddr;
uint16 slavereg;
uint8 ret = 0;
int data = 0;
slaveaddr = 0x5b; //slave device addr
slavereg = 0x78; // reg addr
sram_i2c_init(); //init i2c device
ret = sram_i2c_read(slaveaddr,slavereg);
data = (ret & (1<<1) )? 1:0;
sram_i2c_deinit(); //deinit i2c device
return data;
}
#else
void __sramfunc rk30_suspend_voltage_set(unsigned int vol)
{
@@ -357,6 +374,10 @@ void __sramfunc rk30_suspend_voltage_set(unsigned int vol)
void __sramfunc rk30_suspend_voltage_resume(unsigned int vol)
{
}
int __sramfunc act8931_dc_det(unsigned int vol)
{
return -1;
}
#endif