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, enum led_brightness value)
  25 {
  26         if (value)
  27                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
  28         else
  29                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
  30 }
  31
  32 static void spitzled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
  33 {
  34         if (value)
  35                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
  36         else
  37                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
  38 }
  39
  40 static struct led_classdev spitz_amber_led = {
  41         .name                   = "spitz:amber",
  42         .default_trigger        = "sharpsl-charge",
  43         .brightness_set         = spitzled_amber_set,
  44 };
  45
  46 static struct led_classdev spitz_green_led = {
  47         .name                   = "spitz:green",
  48         .default_trigger        = "ide-disk",
  49         .brightness_set         = spitzled_green_set,
  50 };
  51
  52 #ifdef CONFIG_PM
  53 static int spitzled_suspend(struct platform_device *dev, pm_message_t state)
  54 {
  55 #ifdef CONFIG_LEDS_TRIGGERS
  56         if (spitz_amber_led.trigger && strcmp(spitz_amber_led.trigger->name, "sharpsl-charge"))
  57 #endif
  58                 led_classdev_suspend(&spitz_amber_led);
  59         led_classdev_suspend(&spitz_green_led);
  60         return 0;
  61 }
  62
  63 static int spitzled_resume(struct platform_device *dev)
  64 {
  65         led_classdev_resume(&spitz_amber_led);
  66         led_classdev_resume(&spitz_green_led);
  67         return 0;
  68 }
  69 #endif
  70
  71 static int spitzled_probe(struct platform_device *pdev)
  72 {
  73         int ret;
  74
  75         if (machine_is_akita())
  76                 spitz_green_led.default_trigger = "nand-disk";
  77
  78         ret = led_classdev_register(&pdev->dev, &spitz_amber_led);
  79         if (ret < 0)
  80                 return ret;
  81
  82         ret = led_classdev_register(&pdev->dev, &spitz_green_led);
  83         if (ret < 0)
  84                 led_classdev_unregister(&spitz_amber_led);
  85
  86         return ret;
  87 }
  88
  89 static int spitzled_remove(struct platform_device *pdev)
  90 {
  91         led_classdev_unregister(&spitz_amber_led);
  92         led_classdev_unregister(&spitz_green_led);
  93
  94         return 0;
  95 }
  96
  97 static struct platform_driver spitzled_driver = {
  98         .probe          = spitzled_probe,
  99         .remove         = spitzled_remove,
 100 #ifdef CONFIG_PM
 101         .suspend        = spitzled_suspend,
 102         .resume         = spitzled_resume,
 103 #endif
 104         .driver         = {
 105                 .name           = "spitz-led",
 106         },
 107 };
 108
 109 static int __init spitzled_init(void)
 110 {
 111         return platform_driver_register(&spitzled_driver);
 112 }
 113
 114 static void __exit spitzled_exit(void)
 115 {
 116         platform_driver_unregister(&spitzled_driver);
 117 }
 118
 119 module_init(spitzled_init);
 120 module_exit(spitzled_exit);
 121
 122 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
 123 MODULE_DESCRIPTION("Spitz LED driver");
 124 MODULE_LICENSE("GPL");