Get rid of the attb_read_val() platform hook. Instead,
read the ATTB gpio directly from the driver.
Fail if valid ATTB gpio is not provided by patform data.
Signed-off-by: Roger Quadros <rogerq@xxxxxx>
Acked-by: Mugunthan V N <mugunthanvnm@xxxxxx>
---
drivers/input/touchscreen/pixcir_i2c_ts.c | 19 +++++++++++++++++--
include/linux/input/pixcir_ts.h | 1 -
2 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 3370fd9..a783d94 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -91,11 +91,12 @@ static void pixcir_ts_poscheck(struct pixcir_i2c_ts_data *data)
static irqreturn_t pixcir_ts_isr(int irq, void *dev_id)
{
struct pixcir_i2c_ts_data *tsdata = dev_id;
+ const struct pixcir_ts_platform_data *pdata = tsdata->chip;
while (!tsdata->exiting) {
pixcir_ts_poscheck(tsdata);
- if (tsdata->chip->attb_read_val())
+ if (gpio_get_value(pdata->gpio_attb))
break;
msleep(20);
@@ -301,8 +302,10 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
return ERR_PTR(-ENOMEM);
pdata->gpio_attb = of_get_named_gpio(np, "attb-gpio", 0);
- if (!gpio_is_valid(pdata->gpio_attb))
+ if (!gpio_is_valid(pdata->gpio_attb)) {
dev_err(dev, "Failed to get ATTB GPIO\n");
+ return ERR_PTR(-EINVAL);
+ }
if (of_property_read_u32(np, "x-size", &pdata->x_size)) {
dev_err(dev, "Failed to get x-size property\n");
@@ -344,6 +347,11 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
} else if (!pdata) {
dev_err(&client->dev, "platform data not defined\n");
return -EINVAL;
+ } else {
+ if (!gpio_is_valid(pdata->gpio_attb)) {
+ dev_err(dev, "Invalid gpio_attb in pdata\n");
+ return -EINVAL;
+ }
}
tsdata = devm_kzalloc(dev, sizeof(*tsdata), GFP_KERNEL);
@@ -380,6 +388,13 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
input_set_drvdata(input, tsdata);
+ error = devm_gpio_request_one(dev, pdata->gpio_attb,
+ GPIOF_DIR_IN, "pixcir_i2c_attb");
+ if (error) {
+ dev_err(dev, "Failed to request ATTB gpio\n");
+ return error;
+ }
+
error = devm_request_threaded_irq(dev, client->irq, NULL, pixcir_ts_isr,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
client->name, tsdata);
diff --git a/include/linux/input/pixcir_ts.h b/include/linux/input/pixcir_ts.h
index f17c192..88ffdb50 100644
--- a/include/linux/input/pixcir_ts.h
+++ b/include/linux/input/pixcir_ts.h
@@ -44,7 +44,6 @@ enum pixcir_int_mode {
#define PIXCIR_INT_POL_HIGH (1UL << 2)
struct pixcir_ts_platform_data {
- int (*attb_read_val)(void);
unsigned int x_size; /* X axis resolution */
unsigned int y_size; /* Y axis resolution */
int gpio_attb; /* GPIO connected to ATTB line */
--
1.8.3.2
--
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