RK 平台下TPS65910 PMU 模拟IO口方法

\kernel\arch\arm\mach-rk2928\board-rk2928-sdk-tps65910.c

static struct regulator_init_data tps65910_ldo5 = {

.constraints = {

.name           = "VAUX33",

.min_uV = 1800000,

.max_uV = 3300000,

.apply_uV = 1,

.always_on      = 0, //由于在头文件中已经赋值，那么在此处需要重新赋值为0

.valid_ops_mask = REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_MODE,

.valid_modes_mask = REGULATOR_MODE_STANDBY | REGULATOR_MODE_NORMAL,

},

.num_consumer_supplies = ARRAY_SIZE(tps65910_ldo5_supply),

.consumer_supplies =  tps65910_ldo5_supply,

};

如下结构体在 #include <linux/regulator/machine.h>文件中,always_on:1; /* regulator never off when system is on */文件中已经赋值，赋的值为1，说明将这个电源不可控制

struct regulation_constraints {

char *name;

/* voltage output range (inclusive) - for voltage control */

int min_uV;

int max_uV;

int uV_offset;

/* current output range (inclusive) - for current control */

int min_uA;

int max_uA;

/* valid regulator operating modes for this machine */

unsigned int valid_modes_mask;

/* valid operations for regulator on this machine */

unsigned int valid_ops_mask;

/* regulator input voltage - only if supply is another regulator */

int input_uV;

/* regulator suspend states for global PMIC STANDBY/HIBERNATE */

struct regulator_state state_disk;

struct regulator_state state_mem;

struct regulator_state state_standby;

suspend_state_t initial_state; /* suspend state to set at init */

/* mode to set on startup */

unsigned int initial_mode;

/* constraint flags */

unsigned always_on:1; /* regulator never off when system is on */这个是系统电压永远打开，在头文件中已经赋值

unsigned boot_on:1; /* bootloader/firmware enabled regulator */

unsigned apply_uV:1; /* apply uV constraint if min == max */

};

#include <linux/mfd/tps65910.h>

#include <linux/regulator/machine.h>

struct regulator *ldo;

注意:每次关或打电LDO时，必须先用regulator_get获取LDO，然后再对LDO进行关闭或打开操作

do

{

ldo = regulator_get(NULL, "vaux33"); //vcc_tp

if (ldo== NULL || IS_ERR(ldo)){

printk("get ~~~~~~~~~~~~~~~~~~~~~!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ldo failed!\n");

   }

       regulator_set_voltage(ldo, 3300000, 3300000); 

regulator_enable(ldo);

printk("%s  _tp=%dmV end\n", __func__, regulator_get_voltage(ldo));

regulator_put(ldo);

msleep(200);

ldo = regulator_get(NULL, "vaux33"); //vcc_tp

if (ldo== NULL || IS_ERR(ldo)){

printk("get ~~~~~~~~~~~~~~~~~~~~~!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ldo failed!\n");

   }

while(regulator_is_enabled(ldo)>0)

{

regulator_disable(ldo);

   printk("get ~~~~~~~~~~~~~~~~~~~~~!!!!!!!!!!!!!!!!!!!! !!!!!!!!!fdsfasdassassssafsfsled!\n");

           }

regulator_put(ldo);     

msleep(200); 

}while(1);

printk("mitech_wangrencai active_low = %d\n", data->active_low);

if (data->active_low)

{

enable_vibra_VAUX33(1);

}

else

{

enable_vibra_VAUX33(0);

}