1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Common CPM GPIO wrapper for the CPM GPIO ports
4 *
5 * Author: Christophe Leroy <christophe.leroy@c-s.fr>
6 *
7 * Copyright 2017 CS Systemes d'Information.
8 *
9 */
10
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/platform_device.h>
14
15#include <asm/cpm.h>
16#ifdef CONFIG_8xx_GPIO
17#include <asm/cpm1.h>
18#endif
19
20static int cpm_gpio_probe(struct platform_device *ofdev)
21{
22	struct device *dev = &ofdev->dev;
23	int (*gp_add)(struct device *dev) = of_device_get_match_data(dev);
24
25	if (!gp_add)
26		return -ENODEV;
27
28	return gp_add(dev);
29}
30
31static const struct of_device_id cpm_gpio_match[] = {
32#ifdef CONFIG_8xx_GPIO
33	{
34		.compatible = "fsl,cpm1-pario-bank-a",
35		.data = cpm1_gpiochip_add16,
36	},
37	{
38		.compatible = "fsl,cpm1-pario-bank-b",
39		.data = cpm1_gpiochip_add32,
40	},
41	{
42		.compatible = "fsl,cpm1-pario-bank-c",
43		.data = cpm1_gpiochip_add16,
44	},
45	{
46		.compatible = "fsl,cpm1-pario-bank-d",
47		.data = cpm1_gpiochip_add16,
48	},
49	/* Port E uses CPM2 layout */
50	{
51		.compatible = "fsl,cpm1-pario-bank-e",
52		.data = cpm2_gpiochip_add32,
53	},
54#endif
55	{
56		.compatible = "fsl,cpm2-pario-bank",
57		.data = cpm2_gpiochip_add32,
58	},
59	{},
60};
61MODULE_DEVICE_TABLE(of, cpm_gpio_match);
62
63static struct platform_driver cpm_gpio_driver = {
64	.probe		= cpm_gpio_probe,
65	.driver		= {
66		.name	= "cpm-gpio",
67		.of_match_table	= cpm_gpio_match,
68	},
69};
70
71static int __init cpm_gpio_init(void)
72{
73	return platform_driver_register(&cpm_gpio_driver);
74}
75arch_initcall(cpm_gpio_init);
76
77MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>");
78MODULE_DESCRIPTION("Driver for CPM GPIO");
79MODULE_LICENSE("GPL");
80MODULE_ALIAS("platform:cpm-gpio");
81