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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/powerpc/sysdev/cpm_gpio.c
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// SPDX-License-Identifier: GPL-2.0

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/*

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 * Common CPM GPIO wrapper for the CPM GPIO ports

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 *

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 * Author: Christophe Leroy <[email protected]>

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 *

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 * Copyright 2017 CS Systemes d'Information.

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 *

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 */

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#include <linux/module.h>

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#include <linux/of.h>

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#include <linux/platform_device.h>

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#include <asm/cpm.h>

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#ifdef CONFIG_8xx_GPIO

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#include <asm/cpm1.h>

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#endif

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static int cpm_gpio_probe(struct platform_device *ofdev)

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{

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	struct device *dev = &ofdev->dev;

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	int (*gp_add)(struct device *dev) = of_device_get_match_data(dev);

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	if (!gp_add)

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		return -ENODEV;

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	return gp_add(dev);

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}

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static const struct of_device_id cpm_gpio_match[] = {

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#ifdef CONFIG_8xx_GPIO

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	{

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		.compatible = "fsl,cpm1-pario-bank-a",

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		.data = cpm1_gpiochip_add16,

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	},

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	{

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		.compatible = "fsl,cpm1-pario-bank-b",

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		.data = cpm1_gpiochip_add32,

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	},

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	{

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		.compatible = "fsl,cpm1-pario-bank-c",

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		.data = cpm1_gpiochip_add16,

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	},

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	{

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		.compatible = "fsl,cpm1-pario-bank-d",

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		.data = cpm1_gpiochip_add16,

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	},

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	/* Port E uses CPM2 layout */

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	{

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		.compatible = "fsl,cpm1-pario-bank-e",

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		.data = cpm2_gpiochip_add32,

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	},

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#endif

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	{

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		.compatible = "fsl,cpm2-pario-bank",

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		.data = cpm2_gpiochip_add32,

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	},

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	{},

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};

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MODULE_DEVICE_TABLE(of, cpm_gpio_match);

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static struct platform_driver cpm_gpio_driver = {

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	.probe		= cpm_gpio_probe,

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	.driver		= {

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		.name	= "cpm-gpio",

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		.of_match_table	= cpm_gpio_match,

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	},

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};

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static int __init cpm_gpio_init(void)

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{

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	return platform_driver_register(&cpm_gpio_driver);

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}

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arch_initcall(cpm_gpio_init);

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MODULE_AUTHOR("Christophe Leroy <[email protected]>");

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MODULE_DESCRIPTION("Driver for CPM GPIO");

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MODULE_LICENSE("GPL");

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MODULE_ALIAS("platform:cpm-gpio");

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