projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c095ff93 CL |
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", | |
| c095ff93 CL |
66 | .of_match_table = cpm_gpio_match, |
| 67 | }, | |
| 68 | }; | |
| 69 | ||
| 70 | static int __init cpm_gpio_init(void) | |
| 71 | { | |
| 72 | return platform_driver_register(&cpm_gpio_driver); | |
| 73 | } | |
| 74 | arch_initcall(cpm_gpio_init); | |
| 75 | ||
| 76 | MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>"); | |
| 77 | MODULE_DESCRIPTION("Driver for CPM GPIO"); | |
| 78 | MODULE_LICENSE("GPL"); | |
| 79 | MODULE_ALIAS("platform:cpm-gpio"); |