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path: root/drivers/input/keyboard/gpio_keys_polled.c
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Diffstat (limited to 'drivers/input/keyboard/gpio_keys_polled.c')
-rw-r--r--drivers/input/keyboard/gpio_keys_polled.c113
1 files changed, 51 insertions, 62 deletions
diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 432d36395f35..90df4df58b07 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -23,10 +23,9 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/gpio_keys.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_gpio.h>
+#include <linux/property.h>
#define DRV_NAME "gpio-keys-polled"
@@ -51,15 +50,14 @@ static void gpio_keys_polled_check_state(struct input_dev *input,
int state;
if (bdata->can_sleep)
- state = !!gpio_get_value_cansleep(button->gpio);
+ state = !!gpiod_get_value_cansleep(button->gpiod);
else
- state = !!gpio_get_value(button->gpio);
+ state = !!gpiod_get_value(button->gpiod);
if (state != bdata->last_state) {
unsigned int type = button->type ?: EV_KEY;
- input_event(input, type, button->code,
- !!(state ^ button->active_low));
+ input_event(input, type, button->code, state);
input_sync(input);
bdata->count = 0;
bdata->last_state = state;
@@ -102,21 +100,15 @@ static void gpio_keys_polled_close(struct input_polled_dev *dev)
pdata->disable(bdev->dev);
}
-#ifdef CONFIG_OF
static struct gpio_keys_platform_data *gpio_keys_polled_get_devtree_pdata(struct device *dev)
{
- struct device_node *node, *pp;
struct gpio_keys_platform_data *pdata;
struct gpio_keys_button *button;
+ struct fwnode_handle *child;
int error;
int nbuttons;
- int i;
-
- node = dev->of_node;
- if (!node)
- return NULL;
- nbuttons = of_get_child_count(node);
+ nbuttons = device_get_child_node_count(dev);
if (nbuttons == 0)
return NULL;
@@ -126,52 +118,44 @@ static struct gpio_keys_platform_data *gpio_keys_polled_get_devtree_pdata(struct
return ERR_PTR(-ENOMEM);
pdata->buttons = (struct gpio_keys_button *)(pdata + 1);
- pdata->nbuttons = nbuttons;
- pdata->rep = !!of_get_property(node, "autorepeat", NULL);
- of_property_read_u32(node, "poll-interval", &pdata->poll_interval);
+ pdata->rep = device_property_present(dev, "autorepeat");
+ device_property_read_u32(dev, "poll-interval", &pdata->poll_interval);
- i = 0;
- for_each_child_of_node(node, pp) {
- int gpio;
- enum of_gpio_flags flags;
+ device_for_each_child_node(dev, child) {
+ struct gpio_desc *desc;
- if (!of_find_property(pp, "gpios", NULL)) {
- pdata->nbuttons--;
- dev_warn(dev, "Found button without gpios\n");
- continue;
- }
-
- gpio = of_get_gpio_flags(pp, 0, &flags);
- if (gpio < 0) {
- error = gpio;
+ desc = devm_get_gpiod_from_child(dev, child);
+ if (IS_ERR(desc)) {
+ error = PTR_ERR(desc);
if (error != -EPROBE_DEFER)
dev_err(dev,
"Failed to get gpio flags, error: %d\n",
error);
+ fwnode_handle_put(child);
return ERR_PTR(error);
}
- button = &pdata->buttons[i++];
-
- button->gpio = gpio;
- button->active_low = flags & OF_GPIO_ACTIVE_LOW;
+ button = &pdata->buttons[pdata->nbuttons++];
+ button->gpiod = desc;
- if (of_property_read_u32(pp, "linux,code", &button->code)) {
- dev_err(dev, "Button without keycode: 0x%x\n",
- button->gpio);
+ if (fwnode_property_read_u32(child, "linux,code", &button->code)) {
+ dev_err(dev, "Button without keycode: %d\n",
+ pdata->nbuttons - 1);
+ fwnode_handle_put(child);
return ERR_PTR(-EINVAL);
}
- button->desc = of_get_property(pp, "label", NULL);
+ fwnode_property_read_string(child, "label", &button->desc);
- if (of_property_read_u32(pp, "linux,input-type", &button->type))
+ if (fwnode_property_read_u32(child, "linux,input-type",
+ &button->type))
button->type = EV_KEY;
- button->wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);
+ button->wakeup = fwnode_property_present(child, "gpio-key,wakeup");
- if (of_property_read_u32(pp, "debounce-interval",
- &button->debounce_interval))
+ if (fwnode_property_read_u32(child, "debounce-interval",
+ &button->debounce_interval))
button->debounce_interval = 5;
}
@@ -187,15 +171,6 @@ static const struct of_device_id gpio_keys_polled_of_match[] = {
};
MODULE_DEVICE_TABLE(of, gpio_keys_polled_of_match);
-#else
-
-static inline struct gpio_keys_platform_data *
-gpio_keys_polled_get_devtree_pdata(struct device *dev)
-{
- return NULL;
-}
-#endif
-
static int gpio_keys_polled_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -259,7 +234,6 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
for (i = 0; i < pdata->nbuttons; i++) {
struct gpio_keys_button *button = &pdata->buttons[i];
struct gpio_keys_button_data *bdata = &bdev->data[i];
- unsigned int gpio = button->gpio;
unsigned int type = button->type ?: EV_KEY;
if (button->wakeup) {
@@ -267,15 +241,31 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
return -EINVAL;
}
- error = devm_gpio_request_one(&pdev->dev, gpio, GPIOF_IN,
- button->desc ? : DRV_NAME);
- if (error) {
- dev_err(dev, "unable to claim gpio %u, err=%d\n",
- gpio, error);
- return error;
+ /*
+ * Legacy GPIO number so request the GPIO here and
+ * convert it to descriptor.
+ */
+ if (!button->gpiod && gpio_is_valid(button->gpio)) {
+ unsigned flags = 0;
+
+ if (button->active_low)
+ flags |= GPIOF_ACTIVE_LOW;
+
+ error = devm_gpio_request_one(&pdev->dev, button->gpio,
+ flags, button->desc ? : DRV_NAME);
+ if (error) {
+ dev_err(dev, "unable to claim gpio %u, err=%d\n",
+ button->gpio, error);
+ return error;
+ }
+
+ button->gpiod = gpio_to_desc(button->gpio);
}
- bdata->can_sleep = gpio_cansleep(gpio);
+ if (IS_ERR(button->gpiod))
+ return PTR_ERR(button->gpiod);
+
+ bdata->can_sleep = gpiod_cansleep(button->gpiod);
bdata->last_state = -1;
bdata->threshold = DIV_ROUND_UP(button->debounce_interval,
pdata->poll_interval);
@@ -307,8 +297,7 @@ static struct platform_driver gpio_keys_polled_driver = {
.probe = gpio_keys_polled_probe,
.driver = {
.name = DRV_NAME,
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(gpio_keys_polled_of_match),
+ .of_match_table = gpio_keys_polled_of_match,
},
};
module_platform_driver(gpio_keys_polled_driver);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-08 23:03:34 +0300