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Subject[PATCH 02/13] input: touchscreen: move initialization in 88pm860x
Date
Move the GPADC initialization code from mfd driver to touch driver.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/touchscreen/88pm860x-ts.c | 44 +++++++++++++++++++++-----
drivers/mfd/88pm860x-core.c | 51 -------------------------------
2 files changed, 35 insertions(+), 60 deletions(-)
diff --git a/drivers/input/touchscreen/88pm860x-ts.c b/drivers/input/touchscreen/88pm860x-ts.c
index fe12f61..d2e1451 100644
--- a/drivers/input/touchscreen/88pm860x-ts.c
+++ b/drivers/input/touchscreen/88pm860x-ts.c
@@ -14,6 +14,7 @@
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/input.h>
+#include <linux/mfd/core.h>
#include <linux/mfd/88pm860x.h>

#define MEAS_LEN (8)
@@ -154,11 +155,40 @@ static void pm860x_touch_close(struct input_dev *dev)
pm860x_set_bits(touch->i2c, MEAS_EN3, data, 0);
}

+static void __devinit pm860x_gpadc_init(struct i2c_client *i2c,
+ struct pm860x_touch_pdata *pdata)
+{
+ int data;
+
+ /* set GPADC MISC1 register */
+ data = 0;
+ data |= (pdata->gpadc_prebias << 1) & PM8607_GPADC_PREBIAS_MASK;
+ data |= (pdata->slot_cycle << 3) & PM8607_GPADC_SLOT_CYCLE_MASK;
+ data |= (pdata->off_scale << 5) & PM8607_GPADC_OFF_SCALE_MASK;
+ data |= (pdata->sw_cal << 7) & PM8607_GPADC_SW_CAL_MASK;
+ if (data)
+ pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
+
+ /* set tsi prebias time */
+ if (pdata->tsi_prebias) {
+ data = pdata->tsi_prebias;
+ pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
+ }
+
+ /* set prebias & prechg time of pen detect */
+ data = 0;
+ data |= pdata->pen_prebias & PM8607_PD_PREBIAS_MASK;
+ data |= (pdata->pen_prechg << 5) & PM8607_PD_PRECHG_MASK;
+ if (data)
+ pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
+
+ pm860x_set_bits(i2c, PM8607_GPADC_MISC1,
+ PM8607_GPADC_EN, PM8607_GPADC_EN);
+}
+
static int __devinit pm860x_touch_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
- struct pm860x_platform_data *pm860x_pdata = \
- pdev->dev.parent->platform_data;
struct pm860x_touch_pdata *pdata = NULL;
struct pm860x_touch *touch;
int irq, ret;
@@ -169,13 +199,8 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
return -EINVAL;
}

- if (!pm860x_pdata) {
- dev_err(&pdev->dev, "platform data is missing\n");
- return -EINVAL;
- }
-
- pdata = pm860x_pdata->touch;
- if (!pdata) {
+ pdata = pdev->dev.platform_data;
+ if (pdata == NULL) {
dev_err(&pdev->dev, "touchscreen data is missing\n");
return -EINVAL;
}
@@ -229,6 +254,7 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
goto out_rg;
}

+ pm860x_gpadc_init(touch->i2c, pdata);
platform_set_drvdata(pdev, touch);
INIT_DELAYED_WORK(&touch->poll_work, pm860x_poll_work);
return 0;
diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
index 801aff7..b03cdd3 100644
--- a/drivers/mfd/88pm860x-core.c
+++ b/drivers/mfd/88pm860x-core.c
@@ -362,53 +362,6 @@ static struct irq_chip pm860x_irq_chip = {
.irq_disable = pm860x_irq_disable,
};

-static int __devinit device_gpadc_init(struct pm860x_chip *chip,
- struct pm860x_platform_data *pdata)
-{
- struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
- : chip->companion;
- int data;
- int ret;
-
- /* initialize GPADC without activating it */
-
- if (!pdata || !pdata->touch)
- return -EINVAL;
-
- /* 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;
- }
-
- ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1,
- PM8607_GPADC_EN, PM8607_GPADC_EN);
-out:
- return ret;
-}
-
static int __devinit device_irq_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
@@ -761,10 +714,6 @@ static void __devinit device_8607_init(struct pm860x_chip *chip,
goto out;
}

- ret = device_gpadc_init(chip, pdata);
- if (ret < 0)
- goto out;
-
ret = device_irq_init(chip, pdata);
if (ret < 0)
goto out;
--
1.5.6.5


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