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d9d87d90cc
The conversion of all GPIO drivers to using the .set_rv() and .set_multiple_rv() callbacks from struct gpio_chip (which - unlike their predecessors - return an integer and allow the controller drivers to indicate failures to users) is now complete and the legacy ones have been removed. Rename the new callbacks back to their original names in one sweeping change. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2015-2023 Texas Instruments Incorporated - https://www.ti.com/
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* Andrew Davis <afd@ti.com>
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*
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* Based on the TPS65912 driver
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*/
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#include <linux/gpio/driver.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/tps65086.h>
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struct tps65086_gpio {
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struct gpio_chip chip;
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struct tps65086 *tps;
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};
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static int tps65086_gpio_get_direction(struct gpio_chip *chip,
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unsigned offset)
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{
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/* This device is output only */
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return GPIO_LINE_DIRECTION_OUT;
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}
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static int tps65086_gpio_direction_input(struct gpio_chip *chip,
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unsigned offset)
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{
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/* This device is output only */
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return -EINVAL;
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}
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static int tps65086_gpio_direction_output(struct gpio_chip *chip,
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unsigned offset, int value)
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{
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struct tps65086_gpio *gpio = gpiochip_get_data(chip);
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/* Set the initial value */
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return regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
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BIT(4 + offset), value ? BIT(4 + offset) : 0);
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}
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static int tps65086_gpio_get(struct gpio_chip *chip, unsigned offset)
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{
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struct tps65086_gpio *gpio = gpiochip_get_data(chip);
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int ret, val;
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ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val);
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if (ret < 0)
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return ret;
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return val & BIT(4 + offset);
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}
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static int tps65086_gpio_set(struct gpio_chip *chip, unsigned int offset,
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int value)
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{
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struct tps65086_gpio *gpio = gpiochip_get_data(chip);
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return regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
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BIT(4 + offset), value ? BIT(4 + offset) : 0);
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}
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static const struct gpio_chip template_chip = {
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.label = "tps65086-gpio",
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.owner = THIS_MODULE,
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.get_direction = tps65086_gpio_get_direction,
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.direction_input = tps65086_gpio_direction_input,
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.direction_output = tps65086_gpio_direction_output,
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.get = tps65086_gpio_get,
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.set = tps65086_gpio_set,
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.base = -1,
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.ngpio = 4,
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.can_sleep = true,
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};
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static int tps65086_gpio_probe(struct platform_device *pdev)
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{
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struct tps65086_gpio *gpio;
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gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
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if (!gpio)
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return -ENOMEM;
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gpio->tps = dev_get_drvdata(pdev->dev.parent);
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gpio->chip = template_chip;
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gpio->chip.parent = gpio->tps->dev;
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return devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
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}
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static const struct platform_device_id tps65086_gpio_id_table[] = {
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{ "tps65086-gpio", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, tps65086_gpio_id_table);
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static struct platform_driver tps65086_gpio_driver = {
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.driver = {
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.name = "tps65086-gpio",
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},
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.probe = tps65086_gpio_probe,
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.id_table = tps65086_gpio_id_table,
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};
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module_platform_driver(tps65086_gpio_driver);
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MODULE_AUTHOR("Andrew Davis <afd@ti.com>");
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MODULE_DESCRIPTION("TPS65086 GPIO driver");
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MODULE_LICENSE("GPL v2");
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