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