diff options
Diffstat (limited to 'drivers/input/keyboard/gpio_keys.c')
| -rw-r--r-- | drivers/input/keyboard/gpio_keys.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index 62bfce468f9..1fdf54bb4f6 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -29,6 +29,7 @@ #include <linux/of_platform.h> #include <linux/of_gpio.h> #include <linux/spinlock.h> +#include <linux/pm_runtime.h> struct gpio_button_data { const struct gpio_keys_button *button; @@ -46,6 +47,8 @@ struct gpio_keys_drvdata { struct input_dev *input; struct mutex disable_lock; unsigned int n_buttons; + bool enabled; + bool enable_after_suspend; int (*enable)(struct device *dev); void (*disable)(struct device *dev); struct gpio_button_data data[0]; @@ -524,6 +527,8 @@ static int gpio_keys_open(struct input_dev *input) { struct gpio_keys_drvdata *ddata = input_get_drvdata(input); + pm_runtime_get_sync(input->dev.parent); + ddata->enabled = true; return ddata->enable ? ddata->enable(input->dev.parent) : 0; } @@ -533,6 +538,8 @@ static void gpio_keys_close(struct input_dev *input) if (ddata->disable) ddata->disable(input->dev.parent); + ddata->enabled = false; + pm_runtime_put(input->dev.parent); } /* @@ -675,6 +682,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) ddata->n_buttons = pdata->nbuttons; ddata->enable = pdata->enable; ddata->disable = pdata->disable; + ddata->enabled = false; mutex_init(&ddata->disable_lock); platform_set_drvdata(pdev, ddata); @@ -691,6 +699,8 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) input->id.product = 0x0001; input->id.version = 0x0100; + pm_runtime_enable(&pdev->dev); + /* Enable auto repeat feature of Linux input subsystem */ if (pdata->rep) __set_bit(EV_REP, input->evbit); @@ -756,6 +766,8 @@ static int __devexit gpio_keys_remove(struct platform_device *pdev) struct input_dev *input = ddata->input; int i; + pm_runtime_disable(&pdev->dev); + sysfs_remove_group(&pdev->dev.kobj, &gpio_keys_attr_group); device_init_wakeup(&pdev->dev, 0); @@ -790,6 +802,10 @@ static int gpio_keys_suspend(struct device *dev) if (bdata->button->wakeup) enable_irq_wake(bdata->irq); } + } else { + ddata->enable_after_suspend = ddata->enabled; + if (ddata->enabled && ddata->disable) + ddata->disable(dev); } return 0; @@ -808,6 +824,11 @@ static int gpio_keys_resume(struct device *dev) if (gpio_is_valid(bdata->button->gpio)) gpio_keys_gpio_report_event(bdata); } + + if (!device_may_wakeup(dev) && ddata->enable_after_suspend + && ddata->enable) + ddata->enable(dev); + input_sync(ddata->input); return 0; |