static int max17135_vcom_set_voltage(struct regulator_dev *reg,
int minuV, int uV, unsigned *selector)
{
struct max17135 *max17135 = rdev_get_drvdata(reg);
unsigned int reg_val;
int vcom_read;
if ((uV < vcom_data[max17135->pass_num-1].vcom_min_uV)
|| (uV > vcom_data[max17135->pass_num-1].vcom_max_uV))
return -EINVAL;
max17135_reg_read(REG_MAX17135_DVR, ®_val);
/*
* Only program VCOM if it is not set to the desired value.
* Programming VCOM excessively degrades ability to keep
* DVR register value persistent.
*/
vcom_read = vcom_rs_to_uV(reg_val, max17135->pass_num-1);
if (vcom_read != max17135->vcom_uV) {
reg_val &= ~BITFMASK(DVR);
reg_val |= BITFVAL(DVR, vcom_uV_to_rs(uV,
max17135->pass_num-1));
max17135_reg_write(REG_MAX17135_DVR, reg_val);
reg_val = BITFVAL(CTRL_DVR, true); /* shift to correct bit */
return max17135_reg_write(REG_MAX17135_PRGM_CTRL, reg_val);
}
return 0;
}
static int tps6518x_vcom_set_voltage(struct regulator_dev *reg,
int minuV, int uV)
{
struct tps6518x *tps6518x = rdev_get_drvdata(reg);
unsigned int cur_reg_val; /* current register value to modify */
unsigned int new_reg_val; /* new register value to write */
int retval;
/*
* this will not work on tps65182
*/
if (tps6518x->revID == 65182)
{
//printk("%s %s %d RETURN ERROR 65182! \n",__FILE__,__func__,__LINE__);
return 0;
}
///del,compare for patch:TPS6518x-unable-to-set-VCOM.patch
if ((-uV) < 200000)
{
//printk("%s %s %d too small return uV=%ld\n",__FILE__,__func__,__LINE__,uV);
return 0;
}
//printk(" tps vcom uV=%ld \n",uV);
switch (tps6518x->revID & 15)
{
case 0 : /* TPS65180 */
case 1 : /* TPS65181 */
case 4 : /* TPS65180-rev1 */
tps6518x_reg_read(REG_TPS65180_VCOM_ADJUST,&cur_reg_val);
new_reg_val = to_reg_val(cur_reg_val,
BITFMASK(VCOM_SET),
BITFVAL(VCOM_SET, vcom_uV_to_rs(uV)));
retval = tps6518x_reg_write(REG_TPS65180_VCOM_ADJUST,
new_reg_val);
break;
case 5 : /* TPS65185 */
case 6 : /* TPS65186 */
retval = tps6518x_reg_write(REG_TPS65185_VCOM1,
vcom2_uV_to_rs(uV) & 255);
tps6518x_reg_read( REG_TPS65185_VCOM2,&cur_reg_val);
new_reg_val = to_reg_val(cur_reg_val,
BITFMASK(VCOM2_SET),
BITFVAL(VCOM2_SET, vcom2_uV_to_rs(uV)/256));
retval = tps6518x_reg_write(REG_TPS65185_VCOM2,
new_reg_val);
break;
default :
retval = -1;
}
return retval;
}
static int fp9928_vcom_set_voltage(struct regulator_dev *reg,
int minuV, int uV)
{
u8 reg_val;
if ((uV < vcom_data.vcom_min_uV)
|| (uV > vcom_data.vcom_max_uV)) {
pr_err("Warning : supported VCOM voltage range : -2501mv ~ -302mv\n");
return -EINVAL;
}
reg_val = vcom_uV_to_rs(uV);
fp9928_i2c_device_write(REG_VCOM_SETTING, reg_val);
msleep(10);
fp9928_i2c_device_read(REG_VCOM_SETTING, ®_val);
pr_info("read register raw value : %d\n", reg_val);
pr_info("Set VCOM output voltage to %dmV\n", uV / 1000);
return 0;
}
