Release 4.11 drivers/gpio/gpio-tps6586x.c
/*
* TI TPS6586x GPIO driver
*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
* Author: Laxman dewangan <ldewangan@nvidia.com>
*
* Based on tps6586x.c
* Copyright (c) 2010 CompuLab Ltd.
* Mike Rapoport <mike@compulab.co.il>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mfd/tps6586x.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
/* GPIO control registers */
#define TPS6586X_GPIOSET1 0x5d
#define TPS6586X_GPIOSET2 0x5e
struct tps6586x_gpio {
struct gpio_chip gpio_chip;
struct device *parent;
};
static int tps6586x_gpio_get(struct gpio_chip *gc, unsigned offset)
{
struct tps6586x_gpio *tps6586x_gpio = gpiochip_get_data(gc);
uint8_t val;
int ret;
ret = tps6586x_read(tps6586x_gpio->parent, TPS6586X_GPIOSET2, &val);
if (ret)
return ret;
return !!(val & (1 << offset));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 63 | 98.44% | 1 | 50.00% |
| Linus Walleij | 1 | 1.56% | 1 | 50.00% |
| Total | 64 | 100.00% | 2 | 100.00% |
static void tps6586x_gpio_set(struct gpio_chip *gc, unsigned offset,
int value)
{
struct tps6586x_gpio *tps6586x_gpio = gpiochip_get_data(gc);
tps6586x_update(tps6586x_gpio->parent, TPS6586X_GPIOSET2,
value << offset, 1 << offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 43 | 97.73% | 1 | 50.00% |
| Linus Walleij | 1 | 2.27% | 1 | 50.00% |
| Total | 44 | 100.00% | 2 | 100.00% |
static int tps6586x_gpio_output(struct gpio_chip *gc, unsigned offset,
int value)
{
struct tps6586x_gpio *tps6586x_gpio = gpiochip_get_data(gc);
uint8_t val, mask;
tps6586x_gpio_set(gc, offset, value);
val = 0x1 << (offset * 2);
mask = 0x3 << (offset * 2);
return tps6586x_update(tps6586x_gpio->parent, TPS6586X_GPIOSET1,
val, mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 74 | 98.67% | 1 | 50.00% |
| Linus Walleij | 1 | 1.33% | 1 | 50.00% |
| Total | 75 | 100.00% | 2 | 100.00% |
static int tps6586x_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
{
struct tps6586x_gpio *tps6586x_gpio = gpiochip_get_data(gc);
return tps6586x_irq_get_virq(tps6586x_gpio->parent,
TPS6586X_INT_PLDO_0 + offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 35 | 97.22% | 1 | 50.00% |
| Linus Walleij | 1 | 2.78% | 1 | 50.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
static int tps6586x_gpio_probe(struct platform_device *pdev)
{
struct tps6586x_platform_data *pdata;
struct tps6586x_gpio *tps6586x_gpio;
int ret;
pdata = dev_get_platdata(pdev->dev.parent);
tps6586x_gpio = devm_kzalloc(&pdev->dev,
sizeof(*tps6586x_gpio), GFP_KERNEL);
if (!tps6586x_gpio)
return -ENOMEM;
tps6586x_gpio->parent = pdev->dev.parent;
tps6586x_gpio->gpio_chip.owner = THIS_MODULE;
tps6586x_gpio->gpio_chip.label = pdev->name;
tps6586x_gpio->gpio_chip.parent = &pdev->dev;
tps6586x_gpio->gpio_chip.ngpio = 4;
tps6586x_gpio->gpio_chip.can_sleep = true;
/* FIXME: add handling of GPIOs as dedicated inputs */
tps6586x_gpio->gpio_chip.direction_output = tps6586x_gpio_output;
tps6586x_gpio->gpio_chip.set = tps6586x_gpio_set;
tps6586x_gpio->gpio_chip.get = tps6586x_gpio_get;
tps6586x_gpio->gpio_chip.to_irq = tps6586x_gpio_to_irq;
#ifdef CONFIG_OF_GPIO
tps6586x_gpio->gpio_chip.of_node = pdev->dev.parent->of_node;
#endif
if (pdata && pdata->gpio_base)
tps6586x_gpio->gpio_chip.base = pdata->gpio_base;
else
tps6586x_gpio->gpio_chip.base = -1;
ret = devm_gpiochip_add_data(&pdev->dev, &tps6586x_gpio->gpio_chip,
tps6586x_gpio);
if (ret < 0) {
dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
return ret;
}
platform_set_drvdata(pdev, tps6586x_gpio);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 243 | 98.38% | 3 | 50.00% |
| Linus Walleij | 4 | 1.62% | 3 | 50.00% |
| Total | 247 | 100.00% | 6 | 100.00% |
static struct platform_driver tps6586x_gpio_driver = {
.driver.name = "tps6586x-gpio",
.probe = tps6586x_gpio_probe,
};
static int __init tps6586x_gpio_init(void)
{
return platform_driver_register(&tps6586x_gpio_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
subsys_initcall(tps6586x_gpio_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laxman Dewangan | 542 | 98.37% | 3 | 42.86% |
| Linus Walleij | 8 | 1.45% | 3 | 42.86% |
| Paul Gortmaker | 1 | 0.18% | 1 | 14.29% |
| Total | 551 | 100.00% | 7 | 100.00% |
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