^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) * LEDs driver for PCEngines WRAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2006 Kristian Kielhofner <kris@krisk.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Based on leds-net48xx.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^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/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/scx200_gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define DRVNAME "wrap-led"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define WRAP_POWER_LED_GPIO 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define WRAP_ERROR_LED_GPIO 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define WRAP_EXTRA_LED_GPIO 18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static struct platform_device *pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static void wrap_power_led_set(struct led_classdev *led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static void wrap_error_led_set(struct led_classdev *led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) scx200_gpio_set_low(WRAP_ERROR_LED_GPIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) scx200_gpio_set_high(WRAP_ERROR_LED_GPIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static void wrap_extra_led_set(struct led_classdev *led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static struct led_classdev wrap_power_led = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .name = "wrap::power",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .brightness_set = wrap_power_led_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .default_trigger = "default-on",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .flags = LED_CORE_SUSPENDRESUME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static struct led_classdev wrap_error_led = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .name = "wrap::error",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .brightness_set = wrap_error_led_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .flags = LED_CORE_SUSPENDRESUME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static struct led_classdev wrap_extra_led = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .name = "wrap::extra",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .brightness_set = wrap_extra_led_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .flags = LED_CORE_SUSPENDRESUME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int wrap_led_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ret = devm_led_classdev_register(&pdev->dev, &wrap_power_led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ret = devm_led_classdev_register(&pdev->dev, &wrap_error_led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return devm_led_classdev_register(&pdev->dev, &wrap_extra_led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static struct platform_driver wrap_led_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .probe = wrap_led_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .name = DRVNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static int __init wrap_led_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (!scx200_gpio_present()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) ret = platform_driver_register(&wrap_led_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (IS_ERR(pdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ret = PTR_ERR(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) platform_driver_unregister(&wrap_led_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static void __exit wrap_led_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) platform_device_unregister(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) platform_driver_unregister(&wrap_led_driver);
^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) module_init(wrap_led_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) module_exit(wrap_led_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) MODULE_DESCRIPTION("PCEngines WRAP LED driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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