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 17 static 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 29 static 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 41 static 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 48 static 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 55 static 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 66 static struct platform_driver hp6xxled_driver = { 67 .probe = hp6xxled_probe, 68 .driver = { 69 .name = "hp6xx-led", 70 }, 71 }; 72 73 module_platform_driver(hp6xxled_driver); 74 75 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); 76 MODULE_DESCRIPTION("HP Jornada 6xx LED driver"); 77 MODULE_LICENSE("GPL"); 78 MODULE_ALIAS("platform:hp6xx-led"); 79