mirror of
https://github.com/hardkernel/linux.git
synced 2026-04-10 23:18:10 +09:00
f9eefeeaa7
Change-Id: I754250669891307b0deab2bdab1bd01512713f79 Signed-off-by: Tao Huang <huangtao@rock-chips.com>
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#include <dt-bindings/gpio/gpio.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/backlight.h>
|
|
#include <linux/err.h>
|
|
#include <linux/pwm.h>
|
|
#include <linux/pwm_backlight.h>
|
|
#include <linux/slab.h>
|
|
|
|
|
|
static struct of_device_id five_v_en_of_match[] = {
|
|
{ .compatible = "5v_en" },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, five_v_en_of_match);
|
|
|
|
|
|
static int five_v_en_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *node = pdev->dev.of_node;
|
|
enum of_gpio_flags flags;
|
|
int gpio;
|
|
int ret;
|
|
int en_value;
|
|
|
|
//printk("func: %s\n", __func__);
|
|
if (!node)
|
|
return -ENODEV;
|
|
|
|
gpio = of_get_named_gpio_flags(node, "5ven,pin", 0, &flags);
|
|
en_value = (flags == GPIO_ACTIVE_HIGH)? 1:0;
|
|
//gpio = of_get_named_gpio(node, "gpios", 0);
|
|
if(!gpio_is_valid(gpio)){
|
|
dev_err(&pdev->dev, "invalid 5v gpio%d\n", gpio);
|
|
}
|
|
|
|
ret = devm_gpio_request(&pdev->dev, gpio, "otg_5v_gpio");
|
|
if (ret) {
|
|
dev_err(&pdev->dev,
|
|
"failed to request GPIO%d for otg_drv\n",
|
|
gpio);
|
|
return -EINVAL;
|
|
}
|
|
gpio_direction_output(gpio, en_value);
|
|
|
|
//printk("func: %s\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
static int five_v_en_remove(struct platform_device *pdev)
|
|
{
|
|
//printk("func: %s\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int five_v_en_suspend(struct device *dev)
|
|
{
|
|
//printk("func: %s\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
static int five_v_en_resume(struct device *dev)
|
|
{
|
|
//printk("func: %s\n", __func__);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops five_v_en_pm_ops = {
|
|
#ifdef CONFIG_PM_SLEEP
|
|
.suspend = five_v_en_suspend,
|
|
.resume = five_v_en_resume,
|
|
.poweroff = five_v_en_suspend,
|
|
.restore = five_v_en_resume,
|
|
#endif
|
|
};
|
|
|
|
static struct platform_driver five_v_en_driver = {
|
|
.driver = {
|
|
.name = "five_v_en",
|
|
.owner = THIS_MODULE,
|
|
.pm = &five_v_en_pm_ops,
|
|
.of_match_table = of_match_ptr(five_v_en_of_match),
|
|
},
|
|
.probe = five_v_en_probe,
|
|
.remove = five_v_en_remove,
|
|
};
|
|
|
|
module_platform_driver(five_v_en_driver);
|
|
|
|
MODULE_DESCRIPTION("5v power for otg and hdmi Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:five_v_en");
|