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-hp6xx.c (1841B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * LED Triggers Core
      4 * For the HP Jornada 620/660/680/690 handhelds
      5 *
      6 * Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
      7 *     this driver is based on leds-spitz.c by Richard Purdie.
      8 */
      9
     10#include <linux/module.h>
     11#include <linux/kernel.h>
     12#include <linux/platform_device.h>
     13#include <linux/leds.h>
     14#include <asm/hd64461.h>
     15#include <mach/hp6xx.h>
     16
     17static void hp6xxled_green_set(struct led_classdev *led_cdev,
     18			       enum led_brightness value)
     19{
     20	u8 v8;
     21
     22	v8 = inb(PKDR);
     23	if (value)
     24		outb(v8 & (~PKDR_LED_GREEN), PKDR);
     25	else
     26		outb(v8 | PKDR_LED_GREEN, PKDR);
     27}
     28
     29static void hp6xxled_red_set(struct led_classdev *led_cdev,
     30			     enum led_brightness value)
     31{
     32	u16 v16;
     33
     34	v16 = inw(HD64461_GPBDR);
     35	if (value)
     36		outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
     37	else
     38		outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
     39}
     40
     41static struct led_classdev hp6xx_red_led = {
     42	.name			= "hp6xx:red",
     43	.default_trigger	= "hp6xx-charge",
     44	.brightness_set		= hp6xxled_red_set,
     45	.flags			= LED_CORE_SUSPENDRESUME,
     46};
     47
     48static struct led_classdev hp6xx_green_led = {
     49	.name			= "hp6xx:green",
     50	.default_trigger	= "disk-activity",
     51	.brightness_set		= hp6xxled_green_set,
     52	.flags			= LED_CORE_SUSPENDRESUME,
     53};
     54
     55static int hp6xxled_probe(struct platform_device *pdev)
     56{
     57	int ret;
     58
     59	ret = devm_led_classdev_register(&pdev->dev, &hp6xx_red_led);
     60	if (ret < 0)
     61		return ret;
     62
     63	return devm_led_classdev_register(&pdev->dev, &hp6xx_green_led);
     64}
     65
     66static struct platform_driver hp6xxled_driver = {
     67	.probe		= hp6xxled_probe,
     68	.driver		= {
     69		.name		= "hp6xx-led",
     70	},
     71};
     72
     73module_platform_driver(hp6xxled_driver);
     74
     75MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
     76MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
     77MODULE_LICENSE("GPL");
     78MODULE_ALIAS("platform:hp6xx-led");