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Input: rotary-encoder - set gpio direction for each requested gpio

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Even with the correct pin mux settings, you still need to explicitly
set the gpio direction. Call gpio_direction_input() after each
requested gpio.

Signed-off-by: Andrew Clayton <andrew@digital-domain.net>
Signed-off-by: Mark Somerville <mark@scottishclimbs.com>
Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Andrew Clayton 2010-02-10 23:18:05 -08:00 committed by Dmitry Torokhov
parent 8f8be2439c
commit 5deeac99fe
1 changed files with 14 additions and 0 deletions
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14
drivers/input/misc/rotary_encoder.c
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@ -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,