--- zzzz-none-000/linux-4.9.279/kernel/resource.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/kernel/resource.c	2023-02-08 11:43:43.000000000 +0000
@@ -23,6 +23,7 @@
 #include <linux/pfn.h>
 #include <linux/mm.h>
 #include <linux/resource_ext.h>
+#include <linux/gpio.h>
 #include <asm/io.h>
 
 
@@ -169,10 +170,41 @@
 	.release	= seq_release,
 };
 
+#if defined(CONFIG_AVM_ENHANCED)
+struct resource gpio_resource = {
+    .name   = "gpio",
+    .start  = 0,
+    .end    = ARCH_NR_GPIOS,
+	.flags	= IORESOURCE_IO
+};
+EXPORT_SYMBOL(gpio_resource);
+/*------------------------------------------------------------------------------------------*\
+\*------------------------------------------------------------------------------------------*/
+static int iogpio_open(struct inode *inode, struct file *file)
+{
+	int res = seq_open(file, &resource_op);
+	if (!res) {
+		struct seq_file *m = file->private_data;
+		m->private = &gpio_resource;
+	}
+	return res;
+}
+
+static struct file_operations proc_gpio_operations = {
+    .open		= iogpio_open,
+    .read		= seq_read,
+    .llseek		= seq_lseek,
+    .release	= seq_release,
+};
+#endif/*--- #if defined(CONFIG_AVM_ENHANCED) ---*/
+
 static int __init ioresources_init(void)
 {
 	proc_create("ioports", 0, NULL, &proc_ioports_operations);
 	proc_create("iomem", 0, NULL, &proc_iomem_operations);
+#if defined(CONFIG_AVM_ENHANCED)
+	proc_create("iogpio", 0, NULL, &proc_gpio_operations);
+#endif/*--- #if defined(CONFIG_AVM_ENHANCED) ---*/
 	return 0;
 }
 __initcall(ioresources_init);