diff options
| author | Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> | 2008-08-08 12:14:34 -0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2008-08-08 12:20:12 -0400 |
| commit | 57ffe9d539e0eb741bb9ca8f2834d210e70ee2e3 (patch) | |
| tree | bd058b8c02fe76a501fbf59085760ebf421f6797 /drivers | |
| parent | 34a7c48c221676ff8322ca4b8ded84eada34cf12 (diff) | |
Input: gpio-keys - optimize interrupt handler
By passing a gpio_button_data structure to the handler instead of the
whole platform_device the search for the right button can go away.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/keyboard/gpio_keys.c | 35 |
1 files changed, 12 insertions, 23 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index be58730e636..e2809d29d99 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -56,29 +56,18 @@ static void gpio_check_button(unsigned long _data) static irqreturn_t gpio_keys_isr(int irq, void *dev_id) { - struct platform_device *pdev = dev_id; - struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; - struct gpio_keys_drvdata *ddata = platform_get_drvdata(pdev); - int i; + struct gpio_button_data *bdata = dev_id; + struct gpio_keys_button *button = bdata->button; - for (i = 0; i < pdata->nbuttons; i++) { - struct gpio_keys_button *button = &pdata->buttons[i]; + BUG_ON(irq != gpio_to_irq(button->gpio)); - if (irq == gpio_to_irq(button->gpio)) { - struct gpio_button_data *bdata = &ddata->data[i]; - - if (button->debounce_interval) - mod_timer(&bdata->timer, - jiffies + - msecs_to_jiffies(button->debounce_interval)); - else - gpio_keys_report_event(button, bdata->input); - - return IRQ_HANDLED; - } - } + if (button->debounce_interval) + mod_timer(&bdata->timer, + jiffies + msecs_to_jiffies(button->debounce_interval)); + else + gpio_keys_report_event(button, bdata->input); - return IRQ_NONE; + return IRQ_HANDLED; } static int __devinit gpio_keys_probe(struct platform_device *pdev) @@ -151,7 +140,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, button->desc ? button->desc : "gpio_keys", - pdev); + bdata); if (error) { pr_err("gpio-keys: Unable to claim irq %d; error %d\n", irq, error); @@ -178,7 +167,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) fail2: while (--i >= 0) { - free_irq(gpio_to_irq(pdata->buttons[i].gpio), pdev); + free_irq(gpio_to_irq(pdata->buttons[i].gpio), &ddata->data[i]); if (pdata->buttons[i].debounce_interval) del_timer_sync(&ddata->data[i].timer); gpio_free(pdata->buttons[i].gpio); @@ -203,7 +192,7 @@ static int __devexit gpio_keys_remove(struct platform_device *pdev) for (i = 0; i < pdata->nbuttons; i++) { int irq = gpio_to_irq(pdata->buttons[i].gpio); - free_irq(irq, pdev); + free_irq(irq, &ddata->data[i]); if (pdata->buttons[i].debounce_interval) del_timer_sync(&ddata->data[i].timer); gpio_free(pdata->buttons[i].gpio); |