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path: root/drivers/mfd/88pm860x-core.c
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Diffstat (limited to 'drivers/mfd/88pm860x-core.c')
-rw-r--r--drivers/mfd/88pm860x-core.c84
1 files changed, 38 insertions, 46 deletions
diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
index 2c65a2c..07933f3 100644
--- a/drivers/mfd/88pm860x-core.c
+++ b/drivers/mfd/88pm860x-core.c
@@ -74,12 +74,12 @@ static struct mfd_cell backlight_devs[] = {
}
static struct resource led_resources[] = {
- PM8606_LED_RESOURCE(PM8606_LED1_RED, RGB2B),
- PM8606_LED_RESOURCE(PM8606_LED1_GREEN, RGB2C),
- PM8606_LED_RESOURCE(PM8606_LED1_BLUE, RGB2D),
- PM8606_LED_RESOURCE(PM8606_LED2_RED, RGB1B),
- PM8606_LED_RESOURCE(PM8606_LED2_GREEN, RGB1C),
- PM8606_LED_RESOURCE(PM8606_LED2_BLUE, RGB1D),
+ PM8606_LED_RESOURCE(PM8606_LED1_RED, RGB1B),
+ PM8606_LED_RESOURCE(PM8606_LED1_GREEN, RGB1C),
+ PM8606_LED_RESOURCE(PM8606_LED1_BLUE, RGB1D),
+ PM8606_LED_RESOURCE(PM8606_LED2_RED, RGB2B),
+ PM8606_LED_RESOURCE(PM8606_LED2_GREEN, RGB2C),
+ PM8606_LED_RESOURCE(PM8606_LED2_BLUE, RGB2D),
};
#define PM8606_LED_DEVS(_i) \
@@ -428,52 +428,44 @@ static int __devinit device_gpadc_init(struct pm860x_chip *chip,
{
struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
: chip->companion;
- int use_gpadc = 0, data, ret;
+ int data;
+ int ret;
/* initialize GPADC without activating it */
- if (pdata && pdata->touch) {
- /* set GPADC MISC1 register */
- data = 0;
- data |= (pdata->touch->gpadc_prebias << 1)
- & PM8607_GPADC_PREBIAS_MASK;
- data |= (pdata->touch->slot_cycle << 3)
- & PM8607_GPADC_SLOT_CYCLE_MASK;
- data |= (pdata->touch->off_scale << 5)
- & PM8607_GPADC_OFF_SCALE_MASK;
- data |= (pdata->touch->sw_cal << 7)
- & PM8607_GPADC_SW_CAL_MASK;
- if (data) {
- ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
- if (ret < 0)
- goto out;
- }
- /* set tsi prebias time */
- if (pdata->touch->tsi_prebias) {
- data = pdata->touch->tsi_prebias;
- ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
- if (ret < 0)
- goto out;
- }
- /* set prebias & prechg time of pen detect */
- data = 0;
- data |= pdata->touch->pen_prebias & PM8607_PD_PREBIAS_MASK;
- data |= (pdata->touch->pen_prechg << 5)
- & PM8607_PD_PRECHG_MASK;
- if (data) {
- ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
- if (ret < 0)
- goto out;
- }
+ if (!pdata || !pdata->touch)
+ return -EINVAL;
- use_gpadc = 1;
+ /* set GPADC MISC1 register */
+ data = 0;
+ data |= (pdata->touch->gpadc_prebias << 1) & PM8607_GPADC_PREBIAS_MASK;
+ data |= (pdata->touch->slot_cycle << 3) & PM8607_GPADC_SLOT_CYCLE_MASK;
+ data |= (pdata->touch->off_scale << 5) & PM8607_GPADC_OFF_SCALE_MASK;
+ data |= (pdata->touch->sw_cal << 7) & PM8607_GPADC_SW_CAL_MASK;
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
+ if (ret < 0)
+ goto out;
}
-
- /* turn on GPADC */
- if (use_gpadc) {
- ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1,
- PM8607_GPADC_EN, PM8607_GPADC_EN);
+ /* set tsi prebias time */
+ if (pdata->touch->tsi_prebias) {
+ data = pdata->touch->tsi_prebias;
+ ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
+ if (ret < 0)
+ goto out;
}
+ /* set prebias & prechg time of pen detect */
+ data = 0;
+ data |= pdata->touch->pen_prebias & PM8607_PD_PREBIAS_MASK;
+ data |= (pdata->touch->pen_prechg << 5) & PM8607_PD_PRECHG_MASK;
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
+ if (ret < 0)
+ goto out;
+ }
+
+ ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1,
+ PM8607_GPADC_EN, PM8607_GPADC_EN);
out:
return ret;
}