Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Virtual EISA root driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Acts as a placeholder if we don't have a proper EISA bridge.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * modified for SNI usage by Thomas Bogendoerfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/eisa.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* The default EISA device parent (virtual root device).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * Now use a platform device, since that's the obvious choice. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static struct platform_device eisa_root_dev = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	.name = "eisa",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	.id   = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static struct eisa_root_device eisa_bus_root = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	.dev	       = &eisa_root_dev.dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	.bus_base_addr = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	.res	       = &ioport_resource,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	.slots	       = EISA_MAX_SLOTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	.dma_mask      = 0xffffffff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	.force_probe   = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int __init sni_eisa_root_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	r = platform_device_register(&eisa_root_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	if (!r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	if (eisa_root_register(&eisa_bus_root)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		/* A real bridge may have been registered before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		 * us. So quietly unregister. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		platform_device_unregister(&eisa_root_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }