^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) * GPIO driver for TI TPS65912x PMICs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Andrew F. Davis <afd@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Based on the Arizona GPIO driver and the previous TPS65912 driver by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/tps65912.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct tps65912_gpio {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct gpio_chip gpio_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct tps65912 *tps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int tps65912_gpio_get_direction(struct gpio_chip *gc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct tps65912_gpio *gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int ret, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) ret = regmap_read(gpio->tps->regmap, TPS65912_GPIO1 + offset, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) if (val & GPIO_CFG_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return GPIO_LINE_DIRECTION_OUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return GPIO_LINE_DIRECTION_IN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int tps65912_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct tps65912_gpio *gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) GPIO_CFG_MASK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int tps65912_gpio_direction_output(struct gpio_chip *gc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) unsigned offset, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct tps65912_gpio *gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* Set the initial value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) GPIO_SET_MASK, value ? GPIO_SET_MASK : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) GPIO_CFG_MASK, GPIO_CFG_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static int tps65912_gpio_get(struct gpio_chip *gc, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct tps65912_gpio *gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int ret, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ret = regmap_read(gpio->tps->regmap, TPS65912_GPIO1 + offset, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (val & GPIO_STS_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static void tps65912_gpio_set(struct gpio_chip *gc, unsigned offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct tps65912_gpio *gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) GPIO_SET_MASK, value ? GPIO_SET_MASK : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static const struct gpio_chip template_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .label = "tps65912-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .get_direction = tps65912_gpio_get_direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .direction_input = tps65912_gpio_direction_input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .direction_output = tps65912_gpio_direction_output,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .get = tps65912_gpio_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .set = tps65912_gpio_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .base = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .ngpio = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .can_sleep = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int tps65912_gpio_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct tps65912_gpio *gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (!gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) gpio->tps = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) gpio->gpio_chip = template_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) gpio->gpio_chip.parent = tps->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) ret = devm_gpiochip_add_data(&pdev->dev, &gpio->gpio_chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) platform_set_drvdata(pdev, gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static const struct platform_device_id tps65912_gpio_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) { "tps65912-gpio", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) MODULE_DEVICE_TABLE(platform, tps65912_gpio_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static struct platform_driver tps65912_gpio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .name = "tps65912-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .probe = tps65912_gpio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .id_table = tps65912_gpio_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) module_platform_driver(tps65912_gpio_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) MODULE_DESCRIPTION("TPS65912 GPIO driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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