Release 4.7 drivers/gpio/gpio-da9055.c
/*
* GPIO Driver for Dialog DA9055 PMICs.
*
* Copyright(c) 2012 Dialog Semiconductor Ltd.
*
* Author: David Dajun Chen <dchen@diasemi.com>
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/mfd/da9055/core.h>
#include <linux/mfd/da9055/reg.h>
#include <linux/mfd/da9055/pdata.h>
#define DA9055_VDD_IO 0x0
#define DA9055_PUSH_PULL 0x3
#define DA9055_ACT_LOW 0x0
#define DA9055_GPI 0x1
#define DA9055_PORT_MASK 0x3
#define DA9055_PORT_SHIFT(offset) (4 * (offset % 2))
#define DA9055_INPUT DA9055_GPI
#define DA9055_OUTPUT DA9055_PUSH_PULL
#define DA9055_IRQ_GPI0 3
struct da9055_gpio {
struct da9055 *da9055;
struct gpio_chip gp;
};
static int da9055_gpio_get(struct gpio_chip *gc, unsigned offset)
{
struct da9055_gpio *gpio = gpiochip_get_data(gc);
int gpio_direction = 0;
int ret;
/* Get GPIO direction */
ret = da9055_reg_read(gpio->da9055, (offset >> 1) + DA9055_REG_GPIO0_1);
if (ret < 0)
return ret;
gpio_direction = ret & (DA9055_PORT_MASK) << DA9055_PORT_SHIFT(offset);
gpio_direction >>= DA9055_PORT_SHIFT(offset);
switch (gpio_direction) {
case DA9055_INPUT:
ret = da9055_reg_read(gpio->da9055, DA9055_REG_STATUS_B);
if (ret < 0)
return ret;
break;
case DA9055_OUTPUT:
ret = da9055_reg_read(gpio->da9055, DA9055_REG_GPIO_MODE0_2);
if (ret < 0)
return ret;
}
return ret & (1 << offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 140 | 99.29% | 1 | 50.00% |
| linus walleij | linus walleij | 1 | 0.71% | 1 | 50.00% |
| Total | 141 | 100.00% | 2 | 100.00% |
static void da9055_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
{
struct da9055_gpio *gpio = gpiochip_get_data(gc);
da9055_reg_update(gpio->da9055,
DA9055_REG_GPIO_MODE0_2,
1 << offset,
value << offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 43 | 97.73% | 1 | 50.00% |
| linus walleij | linus walleij | 1 | 2.27% | 1 | 50.00% |
| Total | 44 | 100.00% | 2 | 100.00% |
static int da9055_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
{
struct da9055_gpio *gpio = gpiochip_get_data(gc);
unsigned char reg_byte;
reg_byte = (DA9055_ACT_LOW | DA9055_GPI)
<< DA9055_PORT_SHIFT(offset);
return da9055_reg_update(gpio->da9055, (offset >> 1) +
DA9055_REG_GPIO0_1,
DA9055_PORT_MASK <<
DA9055_PORT_SHIFT(offset),
reg_byte);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 65 | 98.48% | 1 | 50.00% |
| linus walleij | linus walleij | 1 | 1.52% | 1 | 50.00% |
| Total | 66 | 100.00% | 2 | 100.00% |
static int da9055_gpio_direction_output(struct gpio_chip *gc,
unsigned offset, int value)
{
struct da9055_gpio *gpio = gpiochip_get_data(gc);
unsigned char reg_byte;
int ret;
reg_byte = (DA9055_VDD_IO | DA9055_PUSH_PULL)
<< DA9055_PORT_SHIFT(offset);
ret = da9055_reg_update(gpio->da9055, (offset >> 1) +
DA9055_REG_GPIO0_1,
DA9055_PORT_MASK <<
DA9055_PORT_SHIFT(offset),
reg_byte);
if (ret < 0)
return ret;
da9055_gpio_set(gc, offset, value);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 93 | 98.94% | 1 | 50.00% |
| linus walleij | linus walleij | 1 | 1.06% | 1 | 50.00% |
| Total | 94 | 100.00% | 2 | 100.00% |
static int da9055_gpio_to_irq(struct gpio_chip *gc, u32 offset)
{
struct da9055_gpio *gpio = gpiochip_get_data(gc);
struct da9055 *da9055 = gpio->da9055;
return regmap_irq_get_virq(da9055->irq_data,
DA9055_IRQ_GPI0 + offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 44 | 97.78% | 1 | 50.00% |
| linus walleij | linus walleij | 1 | 2.22% | 1 | 50.00% |
| Total | 45 | 100.00% | 2 | 100.00% |
static struct gpio_chip reference_gp = {
.label = "da9055-gpio",
.owner = THIS_MODULE,
.get = da9055_gpio_get,
.set = da9055_gpio_set,
.direction_input = da9055_gpio_direction_input,
.direction_output = da9055_gpio_direction_output,
.to_irq = da9055_gpio_to_irq,
.can_sleep = true,
.ngpio = 3,
.base = -1,
};
static int da9055_gpio_probe(struct platform_device *pdev)
{
struct da9055_gpio *gpio;
struct da9055_pdata *pdata;
int ret;
gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
if (!gpio)
return -ENOMEM;
gpio->da9055 = dev_get_drvdata(pdev->dev.parent);
pdata = dev_get_platdata(gpio->da9055->dev);
gpio->gp = reference_gp;
if (pdata && pdata->gpio_base)
gpio->gp.base = pdata->gpio_base;
ret = devm_gpiochip_add_data(&pdev->dev, &gpio->gp, gpio);
if (ret < 0) {
dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
return ret;
}
platform_set_drvdata(pdev, gpio);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 132 | 88.59% | 1 | 16.67% |
| laxman dewangan | laxman dewangan | 8 | 5.37% | 1 | 16.67% |
| jingoo han | jingoo han | 3 | 2.01% | 1 | 16.67% |
| abdoulaye berthe | abdoulaye berthe | 3 | 2.01% | 1 | 16.67% |
| linus walleij | linus walleij | 2 | 1.34% | 1 | 16.67% |
| varka bhadram | varka bhadram | 1 | 0.67% | 1 | 16.67% |
| Total | 149 | 100.00% | 6 | 100.00% |
static struct platform_driver da9055_gpio_driver = {
.probe = da9055_gpio_probe,
.driver = {
.name = "da9055-gpio",
},
};
static int __init da9055_gpio_init(void)
{
return platform_driver_register(&da9055_gpio_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
subsys_initcall(da9055_gpio_init);
static void __exit da9055_gpio_exit(void)
{
platform_driver_unregister(&da9055_gpio_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_exit(da9055_gpio_exit);
MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
MODULE_DESCRIPTION("DA9055 GPIO Device Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:da9055-gpio");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ashish jangam | ashish jangam | 729 | 96.94% | 1 | 14.29% |
| linus walleij | linus walleij | 8 | 1.06% | 2 | 28.57% |
| laxman dewangan | laxman dewangan | 8 | 1.06% | 1 | 14.29% |
| abdoulaye berthe | abdoulaye berthe | 3 | 0.40% | 1 | 14.29% |
| jingoo han | jingoo han | 3 | 0.40% | 1 | 14.29% |
| varka bhadram | varka bhadram | 1 | 0.13% | 1 | 14.29% |
| greg kroah-hartman | greg kroah-hartman | | 0.00% | 0 | 0.00% |
| Total | 752 | 100.00% | 7 | 100.00% |
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