linux/drivers/gpio/gpio-clps711x.c
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00

89 lines
1.8 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* CLPS711X GPIO driver
*
* Copyright (C) 2012,2013 Alexander Shiyan <shc_work@mail.ru>
*/
#include <linux/err.h>
#include <linux/module.h>
#include <linux/gpio/driver.h>
#include <linux/platform_device.h>
static int clps711x_gpio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
void __iomem *dat, *dir;
struct gpio_chip *gc;
int err, id;
if (!np)
return -ENODEV;
id = of_alias_get_id(np, "gpio");
if ((id < 0) || (id > 4))
return -ENODEV;
gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
if (!gc)
return -ENOMEM;
dat = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(dat))
return PTR_ERR(dat);
dir = devm_platform_ioremap_resource(pdev, 1);
if (IS_ERR(dir))
return PTR_ERR(dir);
switch (id) {
case 3:
/* PORTD is inverted logic for direction register */
err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
NULL, dir, 0);
break;
default:
err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
dir, NULL, 0);
break;
}
if (err)
return err;
switch (id) {
case 4:
/* PORTE is 3 lines only */
gc->ngpio = 3;
break;
default:
break;
}
gc->base = -1;
gc->owner = THIS_MODULE;
platform_set_drvdata(pdev, gc);
return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
}
static const struct of_device_id __maybe_unused clps711x_gpio_ids[] = {
{ .compatible = "cirrus,ep7209-gpio" },
{ }
};
MODULE_DEVICE_TABLE(of, clps711x_gpio_ids);
static struct platform_driver clps711x_gpio_driver = {
.driver = {
.name = "clps711x-gpio",
.of_match_table = of_match_ptr(clps711x_gpio_ids),
},
.probe = clps711x_gpio_probe,
};
module_platform_driver(clps711x_gpio_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
MODULE_DESCRIPTION("CLPS711X GPIO driver");
MODULE_ALIAS("platform:clps711x-gpio");