cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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leds-locomo.c (1961B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * linux/drivers/leds/leds-locomo.c
      4 *
      5 * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
      6 */
      7
      8#include <linux/kernel.h>
      9#include <linux/init.h>
     10#include <linux/module.h>
     11#include <linux/device.h>
     12#include <linux/leds.h>
     13
     14#include <asm/hardware/locomo.h>
     15
     16static void locomoled_brightness_set(struct led_classdev *led_cdev,
     17				enum led_brightness value, int offset)
     18{
     19	struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
     20	unsigned long flags;
     21
     22	local_irq_save(flags);
     23	if (value)
     24		locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
     25	else
     26		locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
     27	local_irq_restore(flags);
     28}
     29
     30static void locomoled_brightness_set0(struct led_classdev *led_cdev,
     31				enum led_brightness value)
     32{
     33	locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
     34}
     35
     36static void locomoled_brightness_set1(struct led_classdev *led_cdev,
     37				enum led_brightness value)
     38{
     39	locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
     40}
     41
     42static struct led_classdev locomo_led0 = {
     43	.name			= "locomo:amber:charge",
     44	.default_trigger	= "main-battery-charging",
     45	.brightness_set		= locomoled_brightness_set0,
     46};
     47
     48static struct led_classdev locomo_led1 = {
     49	.name			= "locomo:green:mail",
     50	.default_trigger	= "nand-disk",
     51	.brightness_set		= locomoled_brightness_set1,
     52};
     53
     54static int locomoled_probe(struct locomo_dev *ldev)
     55{
     56	int ret;
     57
     58	ret = devm_led_classdev_register(&ldev->dev, &locomo_led0);
     59	if (ret < 0)
     60		return ret;
     61
     62	return  devm_led_classdev_register(&ldev->dev, &locomo_led1);
     63}
     64
     65
     66static struct locomo_driver locomoled_driver = {
     67	.drv = {
     68		.name = "locomoled"
     69	},
     70	.devid	= LOCOMO_DEVID_LED,
     71	.probe	= locomoled_probe,
     72};
     73
     74static int __init locomoled_init(void)
     75{
     76	return locomo_driver_register(&locomoled_driver);
     77}
     78module_init(locomoled_init);
     79
     80MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
     81MODULE_DESCRIPTION("Locomo LED driver");
     82MODULE_LICENSE("GPL");