/*******************************************************
* Function: aat28xx_ldo_set_level
* Description: Set LDO vout level
* Parameter
* num: ldo number and it is 1-based value
* level: voltage level
*******************************************************/
int aat28xx_ldo_enable(struct device *dev, unsigned num, unsigned enable)
{
struct i2c_adapter *adap;
struct i2c_client *client;
struct aat28xx_driver_data *drvdata;
int err = 0;
dprintk("ldo_no[%d], on/off[%d]\n",num, enable);
if (num > 0 && num <= AAT28XX_LDO_NUM) {
if ((adap=dev_get_drvdata(dev)) && (client=i2c_get_adapdata(adap))) {
drvdata = i2c_get_clientdata(client);
if (enable) {
if (drvdata->ldo_ref[num-1]++ == 0) {
dprintk("ref count = 0, call aat28xx_set_ldos\n");
err = aat28xx_set_ldos(client, num, enable);
}
}
else {
if (--drvdata->ldo_ref[num-1] == 0) {
dprintk("ref count = 0, call aat28xx_set_ldos\n");
err = aat28xx_set_ldos(client, num, enable);
}
}
return err;
}
}
return -ENODEV;
}
/*******************************************************
* Function: aat28xx_ldo_set_level
* Description: Set LDO vout level
* Parameter
* num: ldo number and it is 1-based value
* level: voltage level
*******************************************************/
int aat28xx_ldo_enable(struct device *dev, unsigned num, unsigned enable)
{
struct i2c_adapter *adap;
struct i2c_client *client;
struct aat28xx_driver_data *drvdata;
int err = 0;
dprintk("ldo_no[%d], on/off[%d]\n",num, enable);
if (num > 0 && num <= AAT28XX_LDO_NUM) {
if ((adap=dev_get_drvdata(dev)) && (client=i2c_get_adapdata(adap))) {
drvdata = i2c_get_clientdata(client);
//LG_CHANGE [[email protected]] 2011-10-12 , LCD brightness [START]
if (enable) {
// LGE_CHAGNE [[email protected]] 2010-07-12,
// should update the ref count only if success
if (drvdata->ldo_ref[num-1] == 0) {
dprintk("ref count = 0, call aat28xx_set_ldos\n");
err = aat28xx_set_ldos(client, num, enable);
if (!err)
drvdata->ldo_ref[num-1]++;
}
//LG_CHANGE [[email protected]] 2011-10-12 , LCD brightness [END]
}
else {
if (--drvdata->ldo_ref[num-1] == 0) {
dprintk("ref count = 0, call aat28xx_set_ldos\n");
err = aat28xx_set_ldos(client, num, enable);
// LGE_CHAGNE [[email protected]] 2010-07-12,
// should restore the ref count if failure
if (err)
drvdata->ldo_ref[num-1]++;
}
}
return err;
}
}
return -ENODEV;
}