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 | |
20 | static 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 | |
31 | static 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 | }; |
61 | MODULE_DEVICE_TABLE(of, cpm_gpio_match); |
62 | |
63 | static 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 | |
71 | static int __init cpm_gpio_init(void) |
72 | { |
73 | return platform_driver_register(&cpm_gpio_driver); |
74 | } |
75 | arch_initcall(cpm_gpio_init); |
76 | |
77 | MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>" ); |
78 | MODULE_DESCRIPTION("Driver for CPM GPIO" ); |
79 | MODULE_LICENSE("GPL" ); |
80 | MODULE_ALIAS("platform:cpm-gpio" ); |
81 | |