Orange Pi5 kernel

^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 the "User LED" on Routerboard532
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Based on leds-cobalt-qube.c by Florian Fainelly and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * rb-diag.c (my own standalone driver for both LED and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * button of Routerboard532).
^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/leds.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 <asm/mach-rc32434/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/mach-rc32434/rb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static void rb532_led_set(struct led_classdev *cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 			  enum led_brightness brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	if (brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		set_latch_u5(LO_ULED, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		set_latch_u5(0, LO_ULED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static enum led_brightness rb532_led_get(struct led_classdev *cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static struct led_classdev rb532_uled = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	.name = "uled",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	.brightness_set = rb532_led_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	.brightness_get = rb532_led_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	.default_trigger = "nand-disk",
^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 rb532_led_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	return led_classdev_register(&pdev->dev, &rb532_uled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int rb532_led_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	led_classdev_unregister(&rb532_uled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static struct platform_driver rb532_led_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	.probe = rb532_led_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	.remove = rb532_led_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		.name = "rb532-led",
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) module_platform_driver(rb532_led_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) MODULE_DESCRIPTION("User LED support for Routerboard532");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MODULE_ALIAS("platform:rb532-led");