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Date: Fri, 21 Sep 2012 18:06:53 +0800
From: Haojian Zhuang <haojian.zhuang@...il.com>
To: sameo@...ux.intel.com, linux-kernel@...r.kernel.org,
dmitry.torokhov@...il.com
Cc: Haojian Zhuang <haojian.zhuang@...il.com>
Subject: [PATCH v2 3/4] mfd: 88pm860x: move gpadc init into touch
The initilization of GPADC is moved from core driver to touch driver
with DT support.
Signed-off-by: Haojian Zhuang <haojian.zhuang@...il.com>
---
drivers/input/touchscreen/88pm860x-ts.c | 91 +++++++++++++++++++++++++++++--
drivers/mfd/88pm860x-core.c | 51 -----------------
2 files changed, 85 insertions(+), 57 deletions(-)
diff --git a/drivers/input/touchscreen/88pm860x-ts.c b/drivers/input/touchscreen/88pm860x-ts.c
index 4f81e6e..326218d 100644
--- a/drivers/input/touchscreen/88pm860x-ts.c
+++ b/drivers/input/touchscreen/88pm860x-ts.c
@@ -116,9 +116,13 @@ static void pm860x_touch_close(struct input_dev *dev)
#ifdef CONFIG_OF
static int __devinit pm860x_touch_dt_init(struct platform_device *pdev,
+ struct pm860x_chip *chip,
int *res_x)
{
struct device_node *np = pdev->dev.parent->of_node;
+ struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
+ : chip->companion;
+ int data, n, ret;
if (!np)
return -ENODEV;
np = of_find_node_by_name(np, "touch");
@@ -126,11 +130,43 @@ static int __devinit pm860x_touch_dt_init(struct platform_device *pdev,
dev_err(&pdev->dev, "Can't find touch node\n");
return -EINVAL;
}
+ /* set GPADC MISC1 register */
+ data = 0;
+ if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-prebias", &n))
+ data |= (n << 1) & PM8607_GPADC_PREBIAS_MASK;
+ if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-slot-cycle", &n))
+ data |= (n << 3) & PM8607_GPADC_SLOT_CYCLE_MASK;
+ if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-off-scale", &n))
+ data |= (n << 5) & PM8607_GPADC_OFF_SCALE_MASK;
+ if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-sw-cal", &n))
+ data |= (n << 7) & PM8607_GPADC_SW_CAL_MASK;
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
+ if (ret < 0)
+ return -EINVAL;
+ }
+ /* set tsi prebias time */
+ if (!of_property_read_u32(np, "marvell,88pm860x-tsi-prebias", &data)) {
+ ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
+ if (ret < 0)
+ return -EINVAL;
+ }
+ /* set prebias & prechg time of pen detect */
+ data = 0;
+ if (!of_property_read_u32(np, "marvell,88pm860x-pen-prebias", &n))
+ data |= n & PM8607_PD_PREBIAS_MASK;
+ if (!of_property_read_u32(np, "marvell,88pm860x-pen-prechg", &n))
+ data |= n & PM8607_PD_PRECHG_MASK;
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
+ if (ret < 0)
+ return -EINVAL;
+ }
of_property_read_u32(np, "marvell,88pm860x-resistor-X", res_x);
return 0;
}
#else
-#define pm860x_touch_dt_init(x, y) (-1)
+#define pm860x_touch_dt_init(x, y, z) (-1)
#endif
static int __devinit pm860x_touch_probe(struct platform_device *pdev)
@@ -138,7 +174,9 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
struct pm860x_touch_pdata *pdata = pdev->dev.platform_data;
struct pm860x_touch *touch;
- int irq, ret, res_x = 0;
+ struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
+ : chip->companion;
+ int irq, ret, res_x = 0, data = 0;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
@@ -146,14 +184,55 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
return -EINVAL;
}
- if (pm860x_touch_dt_init(pdev, &res_x)) {
- if (pdata)
+ if (pm860x_touch_dt_init(pdev, chip, &res_x)) {
+ if (pdata) {
+ /* 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) {
+ ret = pm860x_reg_write(i2c,
+ PM8607_GPADC_MISC1, data);
+ if (ret < 0)
+ return -EINVAL;
+ }
+ /* set tsi prebias time */
+ if (pdata->tsi_prebias) {
+ data = pdata->tsi_prebias;
+ ret = pm860x_reg_write(i2c,
+ PM8607_TSI_PREBIAS, data);
+ if (ret < 0)
+ return -EINVAL;
+ }
+ /* 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) {
+ ret = pm860x_reg_write(i2c,
+ PM8607_PD_PREBIAS, data);
+ if (ret < 0)
+ return -EINVAL;
+ }
res_x = pdata->res_x;
- else {
+ } else {
dev_err(&pdev->dev, "failed to get platform data\n");
return -EINVAL;
}
}
+ /* enable GPADC */
+ ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1, PM8607_GPADC_EN,
+ PM8607_GPADC_EN);
+ if (ret)
+ return ret;
touch = kzalloc(sizeof(struct pm860x_touch), GFP_KERNEL);
if (touch == NULL)
@@ -174,7 +253,7 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
touch->idev->open = pm860x_touch_open;
touch->idev->close = pm860x_touch_close;
touch->chip = chip;
- touch->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+ touch->i2c = i2c;
touch->irq = irq;
touch->res_x = res_x;
input_set_drvdata(touch->idev, touch);
diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
index a2bc5bf..66acac2 100644
--- a/drivers/mfd/88pm860x-core.c
+++ b/drivers/mfd/88pm860x-core.c
@@ -558,53 +558,6 @@ static struct irq_domain_ops pm860x_irq_domain_ops = {
.xlate = irq_domain_xlate_onetwocell,
};
-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)
{
@@ -1067,10 +1020,6 @@ 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;
--
1.7.9.5
--
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