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Release 4.14 drivers/gpio/gpio-tps65912.c

Directory: drivers/gpio
/*
 * GPIO driver for TI TPS65912x PMICs
 *
 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
 *      Andrew F. Davis <afd@ti.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.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 *
 * Based on the Arizona GPIO driver and the previous TPS65912 driver by
 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
 */

#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/platform_device.h>

#include <linux/mfd/tps65912.h>


struct tps65912_gpio {
	
struct gpio_chip gpio_chip;
	
struct tps65912 *tps;
};


static int tps65912_gpio_get_direction(struct gpio_chip *gc, unsigned offset) { struct tps65912_gpio *gpio = gpiochip_get_data(gc); int ret, val; ret = regmap_read(gpio->tps->regmap, TPS65912_GPIO1 + offset, &val); if (ret) return ret; if (val & GPIO_CFG_MASK) return GPIOF_DIR_OUT; else return GPIOF_DIR_IN; }

Contributors

PersonTokensPropCommitsCommitProp
Margarita Olaya Cabrera3958.21%125.00%
Andrew F. Davis2638.81%125.00%
Nicolas Saenz Julienne11.49%125.00%
Linus Walleij11.49%125.00%
Total67100.00%4100.00%


static int tps65912_gpio_direction_input(struct gpio_chip *gc, unsigned offset) { struct tps65912_gpio *gpio = gpiochip_get_data(gc); return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, GPIO_CFG_MASK, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Margarita Olaya Cabrera2661.90%125.00%
Andrew F. Davis1433.33%125.00%
Linus Walleij12.38%125.00%
Nicolas Saenz Julienne12.38%125.00%
Total42100.00%4100.00%


static int tps65912_gpio_direction_output(struct gpio_chip *gc, unsigned offset, int value) { struct tps65912_gpio *gpio = gpiochip_get_data(gc); /* Set the initial value */ regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, GPIO_SET_MASK, value ? GPIO_SET_MASK : 0); return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, GPIO_CFG_MASK, GPIO_CFG_MASK); }

Contributors

PersonTokensPropCommitsCommitProp
Margarita Olaya Cabrera4059.70%125.00%
Andrew F. Davis2537.31%125.00%
Linus Walleij11.49%125.00%
Nicolas Saenz Julienne11.49%125.00%
Total67100.00%4100.00%


static int tps65912_gpio_get(struct gpio_chip *gc, unsigned offset) { struct tps65912_gpio *gpio = gpiochip_get_data(gc); int ret, val; ret = regmap_read(gpio->tps->regmap, TPS65912_GPIO1 + offset, &val); if (ret) return ret; if (val & GPIO_STS_MASK) return 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Andrew F. Davis4669.70%125.00%
Margarita Olaya Cabrera1827.27%125.00%
Linus Walleij11.52%125.00%
Nicolas Saenz Julienne11.52%125.00%
Total66100.00%4100.00%


static void tps65912_gpio_set(struct gpio_chip *gc, unsigned offset, int value) { struct tps65912_gpio *gpio = gpiochip_get_data(gc); regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, GPIO_SET_MASK, value ? GPIO_SET_MASK : 0); }

Contributors

PersonTokensPropCommitsCommitProp
Andrew F. Davis3675.00%133.33%
Margarita Olaya Cabrera816.67%133.33%
Nicolas Saenz Julienne48.33%133.33%
Total48100.00%3100.00%

static const struct gpio_chip template_chip = { .label = "tps65912-gpio", .owner = THIS_MODULE, .get_direction = tps65912_gpio_get_direction, .direction_input = tps65912_gpio_direction_input, .direction_output = tps65912_gpio_direction_output, .get = tps65912_gpio_get, .set = tps65912_gpio_set, .base = -1, .ngpio = 5, .can_sleep = true, };
static int tps65912_gpio_probe(struct platform_device *pdev) { struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent); struct tps65912_gpio *gpio; int ret; gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); if (!gpio) return -ENOMEM; gpio->tps = dev_get_drvdata(pdev->dev.parent); gpio->gpio_chip = template_chip; gpio->gpio_chip.parent = tps->dev; ret = devm_gpiochip_add_data(&pdev->dev, &gpio->gpio_chip, 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

PersonTokensPropCommitsCommitProp
Margarita Olaya Cabrera9769.78%114.29%
Andrew F. Davis2316.55%114.29%
Axel Lin96.47%114.29%
Laxman Dewangan64.32%114.29%
Linus Walleij42.88%342.86%
Total139100.00%7100.00%

static const struct platform_device_id tps65912_gpio_id_table[] = { { "tps65912-gpio", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, tps65912_gpio_id_table); static struct platform_driver tps65912_gpio_driver = { .driver = { .name = "tps65912-gpio", }, .probe = tps65912_gpio_probe, .id_table = tps65912_gpio_id_table, }; module_platform_driver(tps65912_gpio_driver); MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); MODULE_DESCRIPTION("TPS65912 GPIO driver"); MODULE_LICENSE("GPL v2");

Overall Contributors

PersonTokensPropCommitsCommitProp
Margarita Olaya Cabrera33156.48%111.11%
Andrew F. Davis22338.05%111.11%
Axel Lin91.54%111.11%
Linus Walleij81.37%333.33%
Nicolas Saenz Julienne81.37%111.11%
Laxman Dewangan61.02%111.11%
Julia Lawall10.17%111.11%
Total586100.00%9100.00%
Directory: drivers/gpio
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