^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * GPIO driver for RICOH583 power management chip.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Laxman dewangan <ldewangan@nvidia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Based on code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2011 RICOH COMPANY,LTD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.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) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mfd/rc5t583.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct rc5t583_gpio {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct gpio_chip gpio_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct rc5t583 *rc5t583;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int rc5t583_gpio_get(struct gpio_chip *gc, unsigned int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct rc5t583_gpio *rc5t583_gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct device *parent = rc5t583_gpio->rc5t583->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) uint8_t val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) ret = rc5t583_read(parent, RC5T583_GPIO_MON_IOIN, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return !!(val & BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static void rc5t583_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct rc5t583_gpio *rc5t583_gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct device *parent = rc5t583_gpio->rc5t583->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) rc5t583_set_bits(parent, RC5T583_GPIO_IOOUT, BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) rc5t583_clear_bits(parent, RC5T583_GPIO_IOOUT, BIT(offset));
^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 rc5t583_gpio_dir_input(struct gpio_chip *gc, unsigned int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct rc5t583_gpio *rc5t583_gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct device *parent = rc5t583_gpio->rc5t583->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ret = rc5t583_clear_bits(parent, RC5T583_GPIO_IOSEL, BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* Set pin to gpio mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return rc5t583_clear_bits(parent, RC5T583_GPIO_PGSEL, BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static int rc5t583_gpio_dir_output(struct gpio_chip *gc, unsigned offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct rc5t583_gpio *rc5t583_gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct device *parent = rc5t583_gpio->rc5t583->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) rc5t583_gpio_set(gc, offset, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ret = rc5t583_set_bits(parent, RC5T583_GPIO_IOSEL, BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* Set pin to gpio mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return rc5t583_clear_bits(parent, RC5T583_GPIO_PGSEL, BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int rc5t583_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct rc5t583_gpio *rc5t583_gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (offset < RC5T583_MAX_GPIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return rc5t583_gpio->rc5t583->irq_base +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) RC5T583_IRQ_GPIO0 + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static void rc5t583_gpio_free(struct gpio_chip *gc, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct rc5t583_gpio *rc5t583_gpio = gpiochip_get_data(gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct device *parent = rc5t583_gpio->rc5t583->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) rc5t583_set_bits(parent, RC5T583_GPIO_PGSEL, BIT(offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static int rc5t583_gpio_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct rc5t583 *rc5t583 = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct rc5t583_platform_data *pdata = dev_get_platdata(rc5t583->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct rc5t583_gpio *rc5t583_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) rc5t583_gpio = devm_kzalloc(&pdev->dev, sizeof(*rc5t583_gpio),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (!rc5t583_gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) rc5t583_gpio->gpio_chip.label = "gpio-rc5t583",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) rc5t583_gpio->gpio_chip.owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) rc5t583_gpio->gpio_chip.free = rc5t583_gpio_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) rc5t583_gpio->gpio_chip.direction_input = rc5t583_gpio_dir_input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) rc5t583_gpio->gpio_chip.direction_output = rc5t583_gpio_dir_output,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) rc5t583_gpio->gpio_chip.set = rc5t583_gpio_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) rc5t583_gpio->gpio_chip.get = rc5t583_gpio_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) rc5t583_gpio->gpio_chip.to_irq = rc5t583_gpio_to_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) rc5t583_gpio->gpio_chip.ngpio = RC5T583_MAX_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) rc5t583_gpio->gpio_chip.can_sleep = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) rc5t583_gpio->gpio_chip.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) rc5t583_gpio->gpio_chip.base = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) rc5t583_gpio->rc5t583 = rc5t583;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (pdata && pdata->gpio_base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) rc5t583_gpio->gpio_chip.base = pdata->gpio_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) platform_set_drvdata(pdev, rc5t583_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return devm_gpiochip_add_data(&pdev->dev, &rc5t583_gpio->gpio_chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) rc5t583_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static struct platform_driver rc5t583_gpio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .name = "rc5t583-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .probe = rc5t583_gpio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static int __init rc5t583_gpio_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return platform_driver_register(&rc5t583_gpio_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) subsys_initcall(rc5t583_gpio_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags