| Mike Rapoport | 3696a8a | 2007-09-23 15:59:26 +0100 | [diff] [blame] | 1 | /* |
| 2 | * drivers/leds/leds-cm-x270.c |
| 3 | * |
| 4 | * Copyright 2007 CompuLab Ltd. |
| 5 | * Author: Mike Rapoport <mike@compulab.co.il> |
| 6 | * |
| 7 | * Based on leds-corgi.c |
| 8 | * Author: Richard Purdie <rpurdie@openedhand.com> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/leds.h> |
| 20 | |
| 21 | #include <asm/arch/hardware.h> |
| 22 | #include <asm/arch/pxa-regs.h> |
| 23 | |
| 24 | #define GPIO_RED_LED (93) |
| 25 | #define GPIO_GREEN_LED (94) |
| 26 | |
| 27 | static void cmx270_red_set(struct led_classdev *led_cdev, |
| 28 | enum led_brightness value) |
| 29 | { |
| 30 | if (value) |
| 31 | GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED); |
| 32 | else |
| 33 | GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED); |
| 34 | } |
| 35 | |
| 36 | static void cmx270_green_set(struct led_classdev *led_cdev, |
| 37 | enum led_brightness value) |
| 38 | { |
| 39 | if (value) |
| 40 | GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED); |
| 41 | else |
| 42 | GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED); |
| 43 | } |
| 44 | |
| 45 | static struct led_classdev cmx270_red_led = { |
| 46 | .name = "cm-x270:red", |
| 47 | .default_trigger = "nand-disk", |
| 48 | .brightness_set = cmx270_red_set, |
| 49 | }; |
| 50 | |
| 51 | static struct led_classdev cmx270_green_led = { |
| 52 | .name = "cm-x270:green", |
| 53 | .default_trigger = "heartbeat", |
| 54 | .brightness_set = cmx270_green_set, |
| 55 | }; |
| 56 | |
| 57 | #ifdef CONFIG_PM |
| 58 | static int cmx270led_suspend(struct platform_device *dev, pm_message_t state) |
| 59 | { |
| 60 | led_classdev_suspend(&cmx270_red_led); |
| 61 | led_classdev_suspend(&cmx270_green_led); |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int cmx270led_resume(struct platform_device *dev) |
| 66 | { |
| 67 | led_classdev_resume(&cmx270_red_led); |
| 68 | led_classdev_resume(&cmx270_green_led); |
| 69 | return 0; |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | static int cmx270led_probe(struct platform_device *pdev) |
| 74 | { |
| 75 | int ret; |
| 76 | |
| 77 | ret = led_classdev_register(&pdev->dev, &cmx270_red_led); |
| 78 | if (ret < 0) |
| 79 | return ret; |
| 80 | |
| 81 | ret = led_classdev_register(&pdev->dev, &cmx270_green_led); |
| 82 | if (ret < 0) |
| 83 | led_classdev_unregister(&cmx270_red_led); |
| 84 | |
| 85 | return ret; |
| 86 | } |
| 87 | |
| 88 | static int cmx270led_remove(struct platform_device *pdev) |
| 89 | { |
| 90 | led_classdev_unregister(&cmx270_red_led); |
| 91 | led_classdev_unregister(&cmx270_green_led); |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static struct platform_driver cmx270led_driver = { |
| 96 | .probe = cmx270led_probe, |
| 97 | .remove = cmx270led_remove, |
| 98 | #ifdef CONFIG_PM |
| 99 | .suspend = cmx270led_suspend, |
| 100 | .resume = cmx270led_resume, |
| 101 | #endif |
| 102 | .driver = { |
| 103 | .name = "cm-x270-led", |
| 104 | }, |
| 105 | }; |
| 106 | |
| 107 | static int __init cmx270led_init(void) |
| 108 | { |
| 109 | return platform_driver_register(&cmx270led_driver); |
| 110 | } |
| 111 | |
| 112 | static void __exit cmx270led_exit(void) |
| 113 | { |
| 114 | platform_driver_unregister(&cmx270led_driver); |
| 115 | } |
| 116 | |
| 117 | module_init(cmx270led_init); |
| 118 | module_exit(cmx270led_exit); |
| 119 | |
| 120 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); |
| 121 | MODULE_DESCRIPTION("CM-x270 LED driver"); |
| 122 | MODULE_LICENSE("GPL"); |