};
struct gpio_keys_drvdata {
+ const struct gpio_keys_platform_data *pdata;
struct input_dev *input;
struct mutex disable_lock;
- unsigned int n_buttons;
- int (*enable)(struct device *dev);
- void (*disable)(struct device *dev);
struct gpio_button_data data[0];
};
if (!bits)
return -ENOMEM;
- for (i = 0; i < ddata->n_buttons; i++) {
+ for (i = 0; i < ddata->pdata->nbuttons; i++) {
struct gpio_button_data *bdata = &ddata->data[i];
if (bdata->button->type != type)
goto out;
/* First validate */
- for (i = 0; i < ddata->n_buttons; i++) {
+ for (i = 0; i < ddata->pdata->nbuttons; i++) {
struct gpio_button_data *bdata = &ddata->data[i];
if (bdata->button->type != type)
mutex_lock(&ddata->disable_lock);
- for (i = 0; i < ddata->n_buttons; i++) {
+ for (i = 0; i < ddata->pdata->nbuttons; i++) {
struct gpio_button_data *bdata = &ddata->data[i];
if (bdata->button->type != type)
container_of(work, struct gpio_button_data, work);
gpio_keys_gpio_report_event(bdata);
+
+ if (bdata->button->wakeup)
+ pm_relax(bdata->input->dev.parent);
}
static void gpio_keys_gpio_timer(unsigned long _data)
BUG_ON(irq != bdata->irq);
+ if (bdata->button->wakeup)
+ pm_stay_awake(bdata->input->dev.parent);
if (bdata->timer_debounce)
mod_timer(&bdata->timer,
jiffies + msecs_to_jiffies(bdata->timer_debounce));
spin_lock_irqsave(&bdata->lock, flags);
if (!bdata->key_pressed) {
+ if (bdata->button->wakeup)
+ pm_wakeup_event(bdata->input->dev.parent, 0);
+
input_event(input, EV_KEY, button->code, 1);
input_sync(input);
static int gpio_keys_open(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
+ const struct gpio_keys_platform_data *pdata = ddata->pdata;
- return ddata->enable ? ddata->enable(input->dev.parent) : 0;
+ return pdata->enable ? pdata->enable(input->dev.parent) : 0;
}
static void gpio_keys_close(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
+ const struct gpio_keys_platform_data *pdata = ddata->pdata;
- if (ddata->disable)
- ddata->disable(input->dev.parent);
+ if (pdata->disable)
+ pdata->disable(input->dev.parent);
}
/*
* Handlers for alternative sources of platform_data
*/
+
#ifdef CONFIG_OF
/*
* Translate OpenFirmware node properties into platform_data
*/
-static int gpio_keys_get_devtree_pdata(struct device *dev,
- struct gpio_keys_platform_data *pdata)
+static struct gpio_keys_platform_data * __devinit
+gpio_keys_get_devtree_pdata(struct device *dev)
{
struct device_node *node, *pp;
+ struct gpio_keys_platform_data *pdata;
+ struct gpio_keys_button *button;
+ int error;
+ int nbuttons;
int i;
- struct gpio_keys_button *buttons;
- u32 reg;
node = dev->of_node;
- if (node == NULL)
- return -ENODEV;
-
- memset(pdata, 0, sizeof *pdata);
+ if (!node) {
+ error = -ENODEV;
+ goto err_out;
+ }
- pdata->rep = !!of_get_property(node, "autorepeat", NULL);
+ nbuttons = of_get_child_count(node);
+ if (nbuttons == 0) {
+ error = -ENODEV;
+ goto err_out;
+ }
- /* First count the subnodes */
- pp = NULL;
- while ((pp = of_get_next_child(node, pp)))
- pdata->nbuttons++;
+ pdata = kzalloc(sizeof(*pdata) + nbuttons * (sizeof *button),
+ GFP_KERNEL);
+ if (!pdata) {
+ error = -ENOMEM;
+ goto err_out;
+ }
- if (pdata->nbuttons == 0)
- return -ENODEV;
+ pdata->buttons = (struct gpio_keys_button *)(pdata + 1);
+ pdata->nbuttons = nbuttons;
- buttons = kzalloc(pdata->nbuttons * (sizeof *buttons), GFP_KERNEL);
- if (!buttons)
- return -ENOMEM;
+ pdata->rep = !!of_get_property(node, "autorepeat", NULL);
- pp = NULL;
i = 0;
- while ((pp = of_get_next_child(node, pp))) {
+ for_each_child_of_node(node, pp) {
enum of_gpio_flags flags;
if (!of_find_property(pp, "gpios", NULL)) {
dev_warn(dev, "Found button without gpios\n");
continue;
}
- buttons[i].gpio = of_get_gpio_flags(pp, 0, &flags);
- buttons[i].active_low = flags & OF_GPIO_ACTIVE_LOW;
- if (of_property_read_u32(pp, "linux,code", ®)) {
- dev_err(dev, "Button without keycode: 0x%x\n", buttons[i].gpio);
- goto out_fail;
- }
- buttons[i].code = reg;
+ button = &pdata->buttons[i++];
- buttons[i].desc = of_get_property(pp, "label", NULL);
+ button->gpio = of_get_gpio_flags(pp, 0, &flags);
+ button->active_low = flags & OF_GPIO_ACTIVE_LOW;
- if (of_property_read_u32(pp, "linux,input-type", ®) == 0)
- buttons[i].type = reg;
- else
- buttons[i].type = EV_KEY;
+ if (of_property_read_u32(pp, "linux,code", &button->code)) {
+ dev_err(dev, "Button without keycode: 0x%x\n",
+ button->gpio);
+ error = -EINVAL;
+ goto err_free_pdata;
+ }
- buttons[i].wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);
+ button->desc = of_get_property(pp, "label", NULL);
- if (of_property_read_u32(pp, "debounce-interval", ®) == 0)
- buttons[i].debounce_interval = reg;
- else
- buttons[i].debounce_interval = 5;
+ if (of_property_read_u32(pp, "linux,input-type", &button->type))
+ button->type = EV_KEY;
- i++;
+ button->wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);
+
+ if (of_property_read_u32(pp, "debounce-interval",
+ &button->debounce_interval))
+ button->debounce_interval = 5;
}
- pdata->buttons = buttons;
+ if (pdata->nbuttons == 0) {
+ error = -EINVAL;
+ goto err_free_pdata;
+ }
- return 0;
+ return pdata;
-out_fail:
- kfree(buttons);
- return -ENODEV;
+err_free_pdata:
+ kfree(pdata);
+err_out:
+ return ERR_PTR(error);
}
static struct of_device_id gpio_keys_of_match[] = {
#else
-static int gpio_keys_get_devtree_pdata(struct device *dev,
- struct gpio_keys_platform_data *altp)
+static inline struct gpio_keys_platform_data *
+gpio_keys_get_devtree_pdata(struct device *dev)
{
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
}
-#define gpio_keys_of_match NULL
-
#endif
static void gpio_remove_key(struct gpio_button_data *bdata)
static int __devinit gpio_keys_probe(struct platform_device *pdev)
{
- const struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
- struct gpio_keys_drvdata *ddata;
struct device *dev = &pdev->dev;
- struct gpio_keys_platform_data alt_pdata;
+ const struct gpio_keys_platform_data *pdata = dev_get_platdata(dev);
+ struct gpio_keys_drvdata *ddata;
struct input_dev *input;
int i, error;
int wakeup = 0;
if (!pdata) {
- error = gpio_keys_get_devtree_pdata(dev, &alt_pdata);
- if (error)
- return error;
- pdata = &alt_pdata;
+ pdata = gpio_keys_get_devtree_pdata(dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
}
ddata = kzalloc(sizeof(struct gpio_keys_drvdata) +
goto fail1;
}
+ ddata->pdata = pdata;
ddata->input = input;
- ddata->n_buttons = pdata->nbuttons;
- ddata->enable = pdata->enable;
- ddata->disable = pdata->disable;
mutex_init(&ddata->disable_lock);
platform_set_drvdata(pdev, ddata);
fail1:
input_free_device(input);
kfree(ddata);
- /* If we have no platform_data, we allocated buttons dynamically. */
- if (!pdev->dev.platform_data)
- kfree(pdata->buttons);
+ /* If we have no platform data, we allocated pdata dynamically. */
+ if (!dev_get_platdata(&pdev->dev))
+ kfree(pdata);
return error;
}
device_init_wakeup(&pdev->dev, 0);
- for (i = 0; i < ddata->n_buttons; i++)
+ for (i = 0; i < ddata->pdata->nbuttons; i++)
gpio_remove_key(&ddata->data[i]);
input_unregister_device(input);
- /*
- * If we had no platform_data, we allocated buttons dynamically, and
- * must free them here. ddata->data[0].button is the pointer to the
- * beginning of the allocated array.
- */
- if (!pdev->dev.platform_data)
- kfree(ddata->data[0].button);
+ /* If we have no platform data, we allocated pdata dynamically. */
+ if (!dev_get_platdata(&pdev->dev))
+ kfree(ddata->pdata);
kfree(ddata);
int i;
if (device_may_wakeup(dev)) {
- for (i = 0; i < ddata->n_buttons; i++) {
+ for (i = 0; i < ddata->pdata->nbuttons; i++) {
struct gpio_button_data *bdata = &ddata->data[i];
if (bdata->button->wakeup)
enable_irq_wake(bdata->irq);
struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
int i;
- for (i = 0; i < ddata->n_buttons; i++) {
+ for (i = 0; i < ddata->pdata->nbuttons; i++) {
struct gpio_button_data *bdata = &ddata->data[i];
if (bdata->button->wakeup && device_may_wakeup(dev))
disable_irq_wake(bdata->irq);
.name = "gpio-keys",
.owner = THIS_MODULE,
.pm = &gpio_keys_pm_ops,
- .of_match_table = gpio_keys_of_match,
+ .of_match_table = of_match_ptr(gpio_keys_of_match),
}
};
projects / ~andy / linux / blobdiff