Initial commit

2022-05-07 01:01:45 +02:00 · 2022-05-07 01:01:45 +02:00 · 169c65d57e
commit 169c65d57e
51358 changed files with 23120455 additions and 0 deletions
--- a/drivers/input/sunxi-gpiokey.c
+++ b/drivers/input/sunxi-gpiokey.c
@ -0,0 +1,195 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/keyboard.h>
+#include <linux/ioport.h>
+#include <linux/timer.h>
+#include <linux/clk.h>
+#include <linux/sys_config.h>
+#include <linux/sys_config.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/power/scenelock.h>
+
+static volatile u32 key_val;
+static struct gpio_config	power_key_io;
+static struct mutex		gk_mutex;
+static struct input_dev *sunxigk_dev;
+static int suspend_flg;
+
+#ifdef CONFIG_PM
+static struct dev_pm_domain keyboard_pm_domain;
+#endif
+
+static irqreturn_t sunxi_isr_gk(int irq, void *dummy)
+{
+
+	mutex_lock(&gk_mutex);
+
+	if (__gpio_get_value(power_key_io.gpio)) {
+		if (suspend_flg) {
+			input_report_key(sunxigk_dev, KEY_POWER, 1);
+			input_sync(sunxigk_dev);
+			suspend_flg = 0;
+		}
+		input_report_key(sunxigk_dev, KEY_POWER, 0);
+		input_sync(sunxigk_dev);
+	} else{
+		input_report_key(sunxigk_dev, KEY_POWER, 1);
+		input_sync(sunxigk_dev);
+		suspend_flg = 0;
+	}
+
+	mutex_unlock(&gk_mutex);
+	return IRQ_HANDLED;
+}
+
+static int sunxi_keyboard_suspend(struct device *dev)
+{
+	mutex_lock(&gk_mutex);
+	suspend_flg = 1;
+	mutex_unlock(&gk_mutex);
+	return 0;
+}
+static int sunxi_keyboard_resume(struct device *dev)
+{
+
+	return 0;
+}
+
+static int sunxigk_script_startup(struct device_node *np)
+{
+	unsigned int gpio = 0;
+
+	gpio = of_get_named_gpio_flags(np, "key_io", 0,
+						(enum of_gpio_flags *)&power_key_io);
+	if (!gpio_is_valid(gpio)) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int  sunxigk_probe(struct platform_device *pdev)
+{
+	int err = 0;
+	int irq_number = 0;
+	struct device_node *sunxigk_np = NULL;
+
+	sunxigk_np = pdev->dev.of_node;
+	if (!sunxigk_np) {
+		printk("leds_blink_np is not found");
+		goto fail1;
+	}
+
+	if (sunxigk_script_startup(sunxigk_np)) {
+		err = -EFAULT;
+		goto fail1;
+	}
+
+	sunxigk_dev = input_allocate_device();
+	if (!sunxigk_dev) {
+		pr_err("sunxigk: not enough memory for input device\n");
+		err = -ENOMEM;
+		goto fail1;
+	}
+
+	sunxigk_dev->name = "sunxi-gpiokey";
+	sunxigk_dev->phys = "sunxikbd/input0";
+	sunxigk_dev->id.bustype = BUS_HOST;
+	sunxigk_dev->id.vendor = 0x0001;
+	sunxigk_dev->id.product = 0x0001;
+	sunxigk_dev->id.version = 0x0100;
+
+#ifdef REPORT_REPEAT_KEY_BY_INPUT_CORE
+	sunxigk_dev->evbit[0] = BIT_MASK(EV_KEY)|BIT_MASK(EV_REP);
+	printk(KERN_DEBUG "REPORT_REPEAT_KEY_BY_INPUT_CORE is defined, support report repeat key value. \n");
+#else
+	sunxigk_dev->evbit[0] = BIT_MASK(EV_KEY);
+#endif
+	set_bit(KEY_POWER, sunxigk_dev->keybit);
+	mutex_init(&gk_mutex);
+
+	irq_number = gpio_to_irq(power_key_io.gpio);
+
+	err = input_register_device(sunxigk_dev);
+	if (err)
+		goto fail2;
+#ifdef CONFIG_PM
+	keyboard_pm_domain.ops.suspend = sunxi_keyboard_suspend;
+	keyboard_pm_domain.ops.resume = sunxi_keyboard_resume;
+	sunxigk_dev->dev.pm_domain = &keyboard_pm_domain;
+#endif
+
+	if (devm_request_irq(&sunxigk_dev->dev, irq_number, sunxi_isr_gk,
+			       IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND, "gk_EINT", NULL)) {
+		err = -EBUSY;
+		pr_err(KERN_DEBUG "request irq failure. \n");
+		goto fail3;
+	}
+
+	enable_wakeup_src(CPUS_GPIO_SRC, power_key_io.gpio);
+	return 0;
+
+fail3:
+	input_unregister_device(sunxigk_dev);
+fail2:
+	input_free_device(sunxigk_dev);
+fail1:
+	printk(KERN_DEBUG "sunxikbd_init failed. \n");
+
+	return err;
+}
+
+static int sunxigk_remove(struct platform_device *dev)
+{
+	disable_wakeup_src(CPUS_GPIO_SRC, power_key_io.gpio);
+
+	devm_free_irq(&sunxigk_dev->dev, gpio_to_irq(power_key_io.gpio), NULL);
+
+	input_unregister_device(sunxigk_dev);
+
+	return 0;
+}
+
+static const struct of_device_id sunxigk_of_match[] = {
+	{.compatible = "allwinner,sunxi-gpio-power-key", .data = NULL},
+	{ /* sentinel */ }
+};
+
+static struct platform_driver sunxigk_driver = {
+	.probe = sunxigk_probe,
+	.remove = sunxigk_remove,
+	.driver = {
+		.name = "sunxi_gpio_power_key",
+		.of_match_table = of_match_ptr(sunxigk_of_match),
+	},
+};
+
+static int __init sunxigk_init(void)
+{
+
+	if (platform_driver_register(&sunxigk_driver)) {
+		pr_err("gpio user platform_driver_register  fail\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static void __exit sunxigk_exit(void)
+{
+	platform_driver_unregister(&sunxigk_driver);
+}
+
+module_init(sunxigk_init);
+module_exit(sunxigk_exit);
+
+MODULE_AUTHOR("lipeifeng");
+MODULE_DESCRIPTION("sunxi gpio power key driver");
+MODULE_LICENSE("GPL");
+
+