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-rw-r--r--drivers/input/misc/rotary_encoder.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c
index 3b9f588fc747..4ae07935985e 100644
--- a/drivers/input/misc/rotary_encoder.c
+++ b/drivers/input/misc/rotary_encoder.c
@@ -152,6 +152,13 @@ static int __devinit rotary_encoder_probe(struct platform_device *pdev)
goto exit_unregister_input;
}
+ err = gpio_direction_input(pdata->gpio_a);
+ if (err) {
+ dev_err(&pdev->dev, "unable to set GPIO %d for input\n",
+ pdata->gpio_a);
+ goto exit_unregister_input;
+ }
+
err = gpio_request(pdata->gpio_b, DRV_NAME);
if (err) {
dev_err(&pdev->dev, "unable to request GPIO %d\n",
@@ -159,6 +166,13 @@ static int __devinit rotary_encoder_probe(struct platform_device *pdev)
goto exit_free_gpio_a;
}
+ err = gpio_direction_input(pdata->gpio_b);
+ if (err) {
+ dev_err(&pdev->dev, "unable to set GPIO %d for input\n",
+ pdata->gpio_b);
+ goto exit_free_gpio_a;
+ }
+
/* request the IRQs */
err = request_irq(encoder->irq_a, &rotary_encoder_irq,
IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE,