Merge patch series "riscv: dma-mapping: unify support for cache flushes"
[platform/kernel/linux-starfive.git] / drivers / edac / layerscape_edac.c
1 /*
2  * Freescale Memory Controller kernel module
3  *
4  * Author: York Sun <york.sun@nxp.com>
5  *
6  * Copyright 2016 NXP Semiconductor
7  *
8  * Derived from mpc85xx_edac.c
9  * Author: Dave Jiang <djiang@mvista.com>
10  *
11  * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under
12  * the terms of the GNU General Public License version 2. This program
13  * is licensed "as is" without any warranty of any kind, whether express
14  * or implied.
15  */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include "edac_module.h"
20 #include "fsl_ddr_edac.h"
21
22 static const struct of_device_id fsl_ddr_mc_err_of_match[] = {
23         { .compatible = "fsl,qoriq-memory-controller", },
24         {},
25 };
26 MODULE_DEVICE_TABLE(of, fsl_ddr_mc_err_of_match);
27
28 static struct platform_driver fsl_ddr_mc_err_driver = {
29         .probe = fsl_mc_err_probe,
30         .remove = fsl_mc_err_remove,
31         .driver = {
32                 .name = "fsl_ddr_mc_err",
33                 .of_match_table = fsl_ddr_mc_err_of_match,
34         },
35 };
36
37 static int __init fsl_ddr_mc_init(void)
38 {
39         int res;
40
41         if (ghes_get_devices())
42                 return -EBUSY;
43
44         /* make sure error reporting method is sane */
45         switch (edac_op_state) {
46         case EDAC_OPSTATE_POLL:
47         case EDAC_OPSTATE_INT:
48                 break;
49         default:
50                 edac_op_state = EDAC_OPSTATE_INT;
51                 break;
52         }
53
54         res = platform_driver_register(&fsl_ddr_mc_err_driver);
55         if (res) {
56                 pr_err("MC fails to register\n");
57                 return res;
58         }
59
60         return 0;
61 }
62
63 module_init(fsl_ddr_mc_init);
64
65 static void __exit fsl_ddr_mc_exit(void)
66 {
67         platform_driver_unregister(&fsl_ddr_mc_err_driver);
68 }
69
70 module_exit(fsl_ddr_mc_exit);
71
72 MODULE_LICENSE("GPL");
73 MODULE_AUTHOR("NXP Semiconductor");
74 module_param(edac_op_state, int, 0444);
75 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll, 2=Interrupt");