drivers/leds/leds-spitz.c

   1 /*
   2  * LED Triggers Core
   3  *
   4  * Copyright 2005-2006 Openedhand Ltd.
   5  *
   6  * Author: Richard Purdie <rpurdie@openedhand.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/leds.h>
  18 #include <asm/hardware/scoop.h>
  19 #include <asm/mach-types.h>
  20 #include <asm/arch/hardware.h>
  21 #include <asm/arch/pxa-regs.h>
  22 #include <asm/arch/spitz.h>
  23
  24 static void spitzled_amber_set(struct led_classdev *led_cdev,
  25                                enum led_brightness value)
  26 {
  27         if (value)
  28                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
  29         else
  30                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
  31 }
  32
  33 static void spitzled_green_set(struct led_classdev *led_cdev,
  34                                enum led_brightness value)
  35 {
  36         if (value)
  37                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
  38         else
  39                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
  40 }
  41
  42 static struct led_classdev spitz_amber_led = {
  43         .name                   = "spitz:amber:charge",
  44         .default_trigger        = "sharpsl-charge",
  45         .brightness_set         = spitzled_amber_set,
  46 };
  47
  48 static struct led_classdev spitz_green_led = {
  49         .name                   = "spitz:green:hddactivity",
  50         .default_trigger        = "ide-disk",
  51         .brightness_set         = spitzled_green_set,
  52 };
  53
  54 #ifdef CONFIG_PM
  55 static int spitzled_suspend(struct platform_device *dev, pm_message_t state)
  56 {
  57 #ifdef CONFIG_LEDS_TRIGGERS
  58         if (spitz_amber_led.trigger &&
  59             strcmp(spitz_amber_led.trigger->name, "sharpsl-charge"))
  60 #endif
  61                 led_classdev_suspend(&spitz_amber_led);
  62         led_classdev_suspend(&spitz_green_led);
  63         return 0;
  64 }
  65
  66 static int spitzled_resume(struct platform_device *dev)
  67 {
  68         led_classdev_resume(&spitz_amber_led);
  69         led_classdev_resume(&spitz_green_led);
  70         return 0;
  71 }
  72 #endif
  73
  74 static int spitzled_probe(struct platform_device *pdev)
  75 {
  76         int ret;
  77
  78         if (machine_is_akita()) {
  79                 spitz_green_led.name = "spitz:green:mail";
  80                 spitz_green_led.default_trigger = "nand-disk";
  81         }
  82
  83         ret = led_classdev_register(&pdev->dev, &spitz_amber_led);
  84         if (ret < 0)
  85                 return ret;
  86
  87         ret = led_classdev_register(&pdev->dev, &spitz_green_led);
  88         if (ret < 0)
  89                 led_classdev_unregister(&spitz_amber_led);
  90
  91         return ret;
  92 }
  93
  94 static int spitzled_remove(struct platform_device *pdev)
  95 {
  96         led_classdev_unregister(&spitz_amber_led);
  97         led_classdev_unregister(&spitz_green_led);
  98
  99         return 0;
 100 }
 101
 102 static struct platform_driver spitzled_driver = {
 103         .probe          = spitzled_probe,
 104         .remove         = spitzled_remove,
 105 #ifdef CONFIG_PM
 106         .suspend        = spitzled_suspend,
 107         .resume         = spitzled_resume,
 108 #endif
 109         .driver         = {
 110                 .name           = "spitz-led",
 111                 .owner          = THIS_MODULE,
 112         },
 113 };
 114
 115 static int __init spitzled_init(void)
 116 {
 117         return platform_driver_register(&spitzled_driver);
 118 }
 119
 120 static void __exit spitzled_exit(void)
 121 {
 122         platform_driver_unregister(&spitzled_driver);
 123 }
 124
 125 module_init(spitzled_init);
 126 module_exit(spitzled_exit);
 127
 128 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
 129 MODULE_DESCRIPTION("Spitz LED driver");
 130 MODULE_LICENSE("GPL");
 131 MODULE_ALIAS("platform:spitz-led");