z2_plus: Fix home button bug

Author: dmd79

drivers/input/keyboard/gpio_keys.c

@@ -54,6 +54,9 @@ struct gpio_keys_drvdata {
 	struct gpio_button_data data[0];
 };
 
+extern bool reset_gpio(void);
+
+
 static struct device *global_dev;
 static struct syscore_ops gpio_keys_syscore_pm_ops;
 
@@ -332,6 +335,8 @@ static struct attribute_group gpio_keys_attr_group = {
 	.attrs = gpio_keys_attrs,
 };
 
+bool home_button_status;
+
 static void gpio_keys_gpio_report_event(struct gpio_button_data *bdata)
 {
 	const struct gpio_keys_button *button = bdata->button;
@@ -340,7 +345,10 @@ static void gpio_keys_gpio_report_event(struct gpio_button_data *bdata)
 	int state;
 
 	state = (__gpio_get_value(button->gpio) ? 1 : 0) ^ button->active_low;
-
+	pr_info("key gpio value = %d active_low = %d  state=%d home_button_status=%d\n" , (int)__gpio_get_value(button->gpio),button->active_low,state, home_button_status);
+	if (state == 1) {
+		home_button_status = 1;
+	}
 	if (type == EV_ABS) {
 		if (state)
 			input_event(input, type, button->code, button->value);
@@ -350,6 +358,13 @@ static void gpio_keys_gpio_report_event(struct gpio_button_data *bdata)
 	input_sync(input);
 }
 
+void reset_home_button(int i)
+{
+	home_button_status = i;
+	pr_info("key home button reset ok, home_button_status=%d",i);
+}
+
+
 static void gpio_keys_gpio_work_func(struct work_struct *work)
 {
 	struct gpio_button_data *bdata =
@@ -1008,6 +1023,11 @@ static void __exit gpio_keys_exit(void)
 	platform_driver_unregister(&gpio_keys_device_driver);
 }
 
+bool home_button_pressed(void)
+{
+	return home_button_status;
+}
+
 late_initcall(gpio_keys_init);
 module_exit(gpio_keys_exit);
 

drivers/misc/fpc1020_ree.c

@@ -57,6 +57,11 @@ struct fpc1020_data {
 	int screen_on;
 };
 
+extern bool home_button_pressed(void);
+extern void reset_home_button(bool);
+
+bool reset;
+
 static int fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data);
 
 static ssize_t irq_get(struct device* device,
@@ -84,6 +89,7 @@ static ssize_t irq_set(struct device* device,
 		return -ENOENT; 
 	return strnlen(buffer, count);
 }
+
 static DEVICE_ATTR(irq, S_IRUSR | S_IWUSR, irq_get, irq_set);
 
 static ssize_t fp_wl_get(struct device* device,
@@ -111,6 +117,7 @@ static ssize_t fp_wl_set(struct device* device,
 	}
 	return strnlen(buffer, count);
 }
+
 static DEVICE_ATTR(wl, S_IRUSR | S_IWUSR, fp_wl_get, fp_wl_set);
 
 static ssize_t get_wakeup_status(struct device* device,
@@ -143,12 +150,13 @@ static ssize_t set_wakeup_status(struct device* device,
 
 	return strnlen(buffer, count);
 }
+
 static DEVICE_ATTR(wakeup, S_IRUSR | S_IWUSR, get_wakeup_status, set_wakeup_status);
 
 static ssize_t get_key(struct device* device, struct device_attribute* attribute, char* buffer)
 {
 	struct fpc1020_data* fpc1020 = dev_get_drvdata(device);
-	return scnprintf(buffer, PAGE_SIZE, "%i\n", fpc1020->report_key);
+		return scnprintf(buffer, PAGE_SIZE, "%i\n", fpc1020->report_key);
 }
 
 static ssize_t set_key(struct device* device,
@@ -163,13 +171,26 @@ static ssize_t set_key(struct device* device,
 	if (!retval) {
 		if (val == KEY_HOME)
 			val = KEY_NAVI_LONG;  //Convert to U-touch long press keyValue
+		if (val != 0 && home_button_pressed()) val = 0;
+
+		pr_info("home key pressed = %d\n", (int)home_button_pressed());
 		fpc1020->report_key = (int)val;
 		queue_work(fpc1020->fpc1020_wq, &fpc1020->input_report_work);
+
+		if (val == 0) {
+			pr_info("calling home key reset");
+			reset_home_button(0);
+		}
 	} else
 		return -ENOENT;
 	return strnlen(buffer, count);
+}
 
+bool reset_gpio(void)
+{
+	return reset;
 }
+
 static DEVICE_ATTR(key, S_IRUSR | S_IWUSR, get_key, set_key);
 
 static ssize_t get_screen_stat(struct device* device, struct device_attribute* attribute, char* buffer)
@@ -184,6 +205,7 @@ static ssize_t set_screen_stat(struct device* device,
 {
 	return 1;
 }
+
 static DEVICE_ATTR(screen, S_IRUSR | S_IWUSR, get_screen_stat, set_screen_stat);
 
 static struct attribute *attributes[] = {
@@ -194,6 +216,7 @@ static struct attribute *attributes[] = {
 	&dev_attr_screen.attr,
 	NULL
 };
+
 static const struct attribute_group attribute_group = {
 	.attrs = attributes,
 };
@@ -316,7 +339,6 @@ static int fpc1020_manage_sysfs(struct fpc1020_data *fpc1020)
 	return 0;
 }
 
-
 static int fpc1020_alloc_input_dev(struct fpc1020_data *fpc1020)
 {
 	int retval = 0;