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