powerpc/sysdev/cpm_gpio.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Common CPM GPIO wrapper for the CPM GPIO ports
0004  *
0005  * Author: Christophe Leroy <christophe.leroy@c-s.fr>
0006  *
0007  * Copyright 2017 CS Systemes d'Information.
0008  *
0009  */
0010
0011 #include <linux/module.h>
0012 #include <linux/of_device.h>
0013
0014 #include <asm/cpm.h>
0015 #ifdef CONFIG_8xx_GPIO
0016 #include <asm/cpm1.h>
0017 #endif
0018
0019 static int cpm_gpio_probe(struct platform_device *ofdev)
0020 {
0021     struct device *dev = &ofdev->dev;
0022     int (*gp_add)(struct device *dev) = of_device_get_match_data(dev);
0023
0024     if (!gp_add)
0025         return -ENODEV;
0026
0027     return gp_add(dev);
0028 }
0029
0030 static const struct of_device_id cpm_gpio_match[] = {
0031 #ifdef CONFIG_8xx_GPIO
0032     {
0033         .compatible = "fsl,cpm1-pario-bank-a",
0034         .data = cpm1_gpiochip_add16,
0035     },
0036     {
0037         .compatible = "fsl,cpm1-pario-bank-b",
0038         .data = cpm1_gpiochip_add32,
0039     },
0040     {
0041         .compatible = "fsl,cpm1-pario-bank-c",
0042         .data = cpm1_gpiochip_add16,
0043     },
0044     {
0045         .compatible = "fsl,cpm1-pario-bank-d",
0046         .data = cpm1_gpiochip_add16,
0047     },
0048     /* Port E uses CPM2 layout */
0049     {
0050         .compatible = "fsl,cpm1-pario-bank-e",
0051         .data = cpm2_gpiochip_add32,
0052     },
0053 #endif
0054     {
0055         .compatible = "fsl,cpm2-pario-bank",
0056         .data = cpm2_gpiochip_add32,
0057     },
0058     {},
0059 };
0060 MODULE_DEVICE_TABLE(of, cpm_gpio_match);
0061
0062 static struct platform_driver cpm_gpio_driver = {
0063     .probe      = cpm_gpio_probe,
0064     .driver     = {
0065         .name   = "cpm-gpio",
0066         .of_match_table = cpm_gpio_match,
0067     },
0068 };
0069
0070 static int __init cpm_gpio_init(void)
0071 {
0072     return platform_driver_register(&cpm_gpio_driver);
0073 }
0074 arch_initcall(cpm_gpio_init);
0075
0076 MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>");
0077 MODULE_DESCRIPTION("Driver for CPM GPIO");
0078 MODULE_LICENSE("GPL");
0079 MODULE_ALIAS("platform:cpm-gpio");