diff options
author | Ben Dooks <ben@simtec.co.uk> | 2009-11-10 21:01:31 -0800 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-11-20 00:52:08 -0800 |
commit | bc8f1eaf68a8aa1d993492f1ad2d74502665f578 (patch) | |
tree | cadf6c3f31ee6ae8dee14ccd66185faf994d51ff /drivers/input/keyboard/gpio_keys.c | |
parent | 111bc59c08c437e433bd5b9cc726adaa912c6e6c (diff) | |
download | linux-bc8f1eaf68a8aa1d993492f1ad2d74502665f578.tar.bz2 |
Input: gpio_keys - seperate individual button setup to make code neater
Move the code that deals with setting up each individual button out into
a new function to reduce the indentation and allow us to common up some
of the error recovery code.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard/gpio_keys.c')
-rw-r--r-- | drivers/input/keyboard/gpio_keys.c | 93 |
1 files changed, 53 insertions, 40 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index b236709a2c01..8941a8ba89bf 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -73,6 +73,57 @@ static irqreturn_t gpio_keys_isr(int irq, void *dev_id) return IRQ_HANDLED; } +static int __devinit gpio_keys_setup_key(struct device *dev, + struct gpio_button_data *bdata, + struct gpio_keys_button *button) +{ + char *desc = button->desc ? button->desc : "gpio_keys"; + int irq, error; + + setup_timer(&bdata->timer, gpio_keys_timer, (unsigned long)bdata); + INIT_WORK(&bdata->work, gpio_keys_report_event); + + error = gpio_request(button->gpio, desc); + if (error < 0) { + dev_err(dev, "failed to request GPIO %d, error %d\n", + button->gpio, error); + goto fail2; + } + + error = gpio_direction_input(button->gpio); + if (error < 0) { + dev_err(dev, "failed to configure" + " direction for GPIO %d, error %d\n", + button->gpio, error); + goto fail3; + } + + irq = gpio_to_irq(button->gpio); + if (irq < 0) { + error = irq; + dev_err(dev, "Unable to get irq number for GPIO %d, error %d\n", + button->gpio, error); + goto fail3; + } + + error = request_irq(irq, gpio_keys_isr, + IRQF_SHARED | + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + desc, bdata); + if (error) { + dev_err(dev, "Unable to claim irq %d; error %d\n", + irq, error); + goto fail3; + } + + return 0; + +fail3: + gpio_free(button->gpio); +fail2: + return error; +} + static int __devinit gpio_keys_probe(struct platform_device *pdev) { struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; @@ -112,52 +163,14 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) for (i = 0; i < pdata->nbuttons; i++) { struct gpio_keys_button *button = &pdata->buttons[i]; struct gpio_button_data *bdata = &ddata->data[i]; - int irq; unsigned int type = button->type ?: EV_KEY; bdata->input = input; bdata->button = button; - setup_timer(&bdata->timer, - gpio_keys_timer, (unsigned long)bdata); - INIT_WORK(&bdata->work, gpio_keys_report_event); - - error = gpio_request(button->gpio, button->desc ?: "gpio_keys"); - if (error < 0) { - dev_err(dev, "failed to request GPIO %d, error %d\n", - button->gpio, error); - goto fail2; - } - error = gpio_direction_input(button->gpio); - if (error < 0) { - dev_err(dev, "failed to configure" - " direction for GPIO %d, error %d\n", - button->gpio, error); - gpio_free(button->gpio); + error = gpio_keys_setup_key(dev, bdata, button); + if (error) goto fail2; - } - - irq = gpio_to_irq(button->gpio); - if (irq < 0) { - error = irq; - dev_err(dev, "Unable to get irq number " - "for GPIO %d, error %d\n", - button->gpio, error); - gpio_free(button->gpio); - goto fail2; - } - - error = request_irq(irq, gpio_keys_isr, - IRQF_SHARED | - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - button->desc ? button->desc : "gpio_keys", - bdata); - if (error) { - dev_err(dev, "Unable to claim irq %d; error %d\n", - irq, error); - gpio_free(button->gpio); - goto fail2; - } if (button->wakeup) wakeup = 1; |