^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Andrew F. Davis <afd@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Based on the TPS65912 driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mfd/tps65086.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) struct tps65086_gpio {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct gpio_chip chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct tps65086 *tps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static int tps65086_gpio_get_direction(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* This device is output only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return GPIO_LINE_DIRECTION_OUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static int tps65086_gpio_direction_input(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* This device is output only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int tps65086_gpio_direction_output(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) unsigned offset, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct tps65086_gpio *gpio = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* Set the initial value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) BIT(4 + offset), value ? BIT(4 + offset) : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static int tps65086_gpio_get(struct gpio_chip *chip, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct tps65086_gpio *gpio = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int ret, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return val & BIT(4 + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static void tps65086_gpio_set(struct gpio_chip *chip, unsigned offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct tps65086_gpio *gpio = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) BIT(4 + offset), value ? BIT(4 + offset) : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static const struct gpio_chip template_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .label = "tps65086-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .get_direction = tps65086_gpio_get_direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .direction_input = tps65086_gpio_direction_input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .direction_output = tps65086_gpio_direction_output,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .get = tps65086_gpio_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .set = tps65086_gpio_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .base = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .ngpio = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .can_sleep = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int tps65086_gpio_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct tps65086_gpio *gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (!gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) platform_set_drvdata(pdev, gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) gpio->tps = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) gpio->chip = template_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) gpio->chip.parent = gpio->tps->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) ret = gpiochip_add_data(&gpio->chip, gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int tps65086_gpio_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct tps65086_gpio *gpio = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) gpiochip_remove(&gpio->chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static const struct platform_device_id tps65086_gpio_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) { "tps65086-gpio", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) MODULE_DEVICE_TABLE(platform, tps65086_gpio_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static struct platform_driver tps65086_gpio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .name = "tps65086-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .probe = tps65086_gpio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .remove = tps65086_gpio_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .id_table = tps65086_gpio_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) module_platform_driver(tps65086_gpio_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) MODULE_DESCRIPTION("TPS65086 GPIO driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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