mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 10:06:43 +07:00
360e64d8bb
Cc: Jean Delvare <jdelvare@suse.de> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
|
|
* Philips UCB1400 GPIO driver
|
|
*
|
|
* Author: Marek Vasut <marek.vasut@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/ucb1400.h>
|
|
|
|
static int ucb1400_gpio_dir_in(struct gpio_chip *gc, unsigned off)
|
|
{
|
|
struct ucb1400_gpio *gpio;
|
|
gpio = container_of(gc, struct ucb1400_gpio, gc);
|
|
ucb1400_gpio_set_direction(gpio->ac97, off, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int ucb1400_gpio_dir_out(struct gpio_chip *gc, unsigned off, int val)
|
|
{
|
|
struct ucb1400_gpio *gpio;
|
|
gpio = container_of(gc, struct ucb1400_gpio, gc);
|
|
ucb1400_gpio_set_direction(gpio->ac97, off, 1);
|
|
ucb1400_gpio_set_value(gpio->ac97, off, val);
|
|
return 0;
|
|
}
|
|
|
|
static int ucb1400_gpio_get(struct gpio_chip *gc, unsigned off)
|
|
{
|
|
struct ucb1400_gpio *gpio;
|
|
gpio = container_of(gc, struct ucb1400_gpio, gc);
|
|
return ucb1400_gpio_get_value(gpio->ac97, off);
|
|
}
|
|
|
|
static void ucb1400_gpio_set(struct gpio_chip *gc, unsigned off, int val)
|
|
{
|
|
struct ucb1400_gpio *gpio;
|
|
gpio = container_of(gc, struct ucb1400_gpio, gc);
|
|
ucb1400_gpio_set_value(gpio->ac97, off, val);
|
|
}
|
|
|
|
static int ucb1400_gpio_probe(struct platform_device *dev)
|
|
{
|
|
struct ucb1400_gpio *ucb = dev->dev.platform_data;
|
|
int err = 0;
|
|
|
|
if (!(ucb && ucb->gpio_offset)) {
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
platform_set_drvdata(dev, ucb);
|
|
|
|
ucb->gc.label = "ucb1400_gpio";
|
|
ucb->gc.base = ucb->gpio_offset;
|
|
ucb->gc.ngpio = 10;
|
|
ucb->gc.owner = THIS_MODULE;
|
|
|
|
ucb->gc.direction_input = ucb1400_gpio_dir_in;
|
|
ucb->gc.direction_output = ucb1400_gpio_dir_out;
|
|
ucb->gc.get = ucb1400_gpio_get;
|
|
ucb->gc.set = ucb1400_gpio_set;
|
|
ucb->gc.can_sleep = 1;
|
|
|
|
err = gpiochip_add(&ucb->gc);
|
|
if (err)
|
|
goto err;
|
|
|
|
if (ucb && ucb->gpio_setup)
|
|
err = ucb->gpio_setup(&dev->dev, ucb->gc.ngpio);
|
|
|
|
err:
|
|
return err;
|
|
|
|
}
|
|
|
|
static int ucb1400_gpio_remove(struct platform_device *dev)
|
|
{
|
|
int err = 0;
|
|
struct ucb1400_gpio *ucb = platform_get_drvdata(dev);
|
|
|
|
if (ucb && ucb->gpio_teardown) {
|
|
err = ucb->gpio_teardown(&dev->dev, ucb->gc.ngpio);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
err = gpiochip_remove(&ucb->gc);
|
|
return err;
|
|
}
|
|
|
|
static struct platform_driver ucb1400_gpio_driver = {
|
|
.probe = ucb1400_gpio_probe,
|
|
.remove = ucb1400_gpio_remove,
|
|
.driver = {
|
|
.name = "ucb1400_gpio"
|
|
},
|
|
};
|
|
|
|
module_platform_driver(ucb1400_gpio_driver);
|
|
|
|
MODULE_DESCRIPTION("Philips UCB1400 GPIO driver");
|
|
MODULE_LICENSE("GPL");
|