diff options
Diffstat (limited to 'drivers/input/misc/rotary_encoder.c')
| -rw-r--r-- | drivers/input/misc/rotary_encoder.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c index 3b9f588fc747..1f8e0108962e 100644 --- a/drivers/input/misc/rotary_encoder.c +++ b/drivers/input/misc/rotary_encoder.c @@ -22,6 +22,7 @@ #include <linux/platform_device.h> #include <linux/gpio.h> #include <linux/rotary_encoder.h> +#include <linux/slab.h> #define DRV_NAME "rotary-encoder" @@ -152,6 +153,13 @@ 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 +167,13 @@ 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, |