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_device.h> 13 14 #include <asm/cpm.h> 15 #ifdef CONFIG_8xx_GPIO 16 #include <asm/cpm1.h> 17 #endif 18 19 static int cpm_gpio_probe(struct platform_device *ofdev) 20 { 21 struct device *dev = &ofdev->dev; 22 int (*gp_add)(struct device *dev) = of_device_get_match_data(dev); 23 24 if (!gp_add) 25 return -ENODEV; 26 27 return gp_add(dev); 28 } 29 30 static const struct of_device_id cpm_gpio_match[] = { 31 #ifdef CONFIG_8xx_GPIO 32 { 33 .compatible = "fsl,cpm1-pario-bank-a", 34 .data = cpm1_gpiochip_add16, 35 }, 36 { 37 .compatible = "fsl,cpm1-pario-bank-b", 38 .data = cpm1_gpiochip_add32, 39 }, 40 { 41 .compatible = "fsl,cpm1-pario-bank-c", 42 .data = cpm1_gpiochip_add16, 43 }, 44 { 45 .compatible = "fsl,cpm1-pario-bank-d", 46 .data = cpm1_gpiochip_add16, 47 }, 48 /* Port E uses CPM2 layout */ 49 { 50 .compatible = "fsl,cpm1-pario-bank-e", 51 .data = cpm2_gpiochip_add32, 52 }, 53 #endif 54 { 55 .compatible = "fsl,cpm2-pario-bank", 56 .data = cpm2_gpiochip_add32, 57 }, 58 {}, 59 }; 60 MODULE_DEVICE_TABLE(of, cpm_gpio_match); 61 62 static struct platform_driver cpm_gpio_driver = { 63 .probe = cpm_gpio_probe, 64 .driver = { 65 .name = "cpm-gpio", 66 .owner = THIS_MODULE, 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