Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (c) 2015, Christoph Hellwig.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (c) 2015, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) static int found(struct resource *res, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static __init int register_e820_pmem(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	struct platform_device *pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	rc = walk_iomem_res_desc(IORES_DESC_PERSISTENT_MEMORY_LEGACY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 				 IORESOURCE_MEM, 0, -1, NULL, found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	if (rc <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	 * See drivers/nvdimm/e820.c for the implementation, this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	 * simply here to trigger the module to load on demand.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	pdev = platform_device_alloc("e820_pmem", -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	return platform_device_add(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) device_initcall(register_e820_pmem);