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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * LED Triggers Core4 * For the HP Jornada 620/660/680/690 handhelds5 *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 else26 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 else38 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");79