waterDataDiscreteRateMining memoryOperation.c 袁明明 commit at 2021-03-31

waterDataDiscreteRateMining/dataSharedMemory/memoryOperation.c

@@ -1044,3 +1044,59 @@ void bfin_special_gpio_free(unsigned gpio)
 		return;
 	}
 
+	unreserve(special_gpio, gpio);
+	unreserve(peri, gpio);
+	set_label(gpio, "free");
+	hard_local_irq_restore(flags);
+}
+EXPORT_SYMBOL(bfin_special_gpio_free);
+#endif
+
+
+int bfin_gpio_irq_request(unsigned gpio, const char *label)
+{
+	unsigned long flags;
+
+	if (check_gpio(gpio) < 0)
+		return -EINVAL;
+
+	flags = hard_local_irq_save();
+
+	if (unlikely(is_reserved(peri, gpio, 1))) {
+		if (system_state == SYSTEM_BOOTING)
+			dump_stack();
+		printk(KERN_ERR
+		       "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
+		       gpio, get_label(gpio));
+		hard_local_irq_restore(flags);
+		return -EBUSY;
+	}
+	if (unlikely(is_reserved(gpio, gpio, 1)))
+		printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved by %s! "
+		       "(Documentation/blackfin/bfin-gpio-notes.txt)\n",
+		       gpio, get_label(gpio));
+
+	reserve(gpio_irq, gpio);
+	set_label(gpio, label);
+
+	hard_local_irq_restore(flags);
+
+	port_setup(gpio, GPIO_USAGE);
+
+	return 0;
+}
+
+void bfin_gpio_irq_free(unsigned gpio)
+{
+	unsigned long flags;
+
+	if (check_gpio(gpio) < 0)
+		return;
+
+	flags = hard_local_irq_save();
+
+	if (unlikely(!is_reserved(gpio_irq, gpio, 0))) {
+		if (system_state == SYSTEM_BOOTING)
+			dump_stack();
+		gpio_error(gpio);
+		hard_local_irq_restore(flags);