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/config.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/leds.h>
  19 #include <asm/hardware/scoop.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/arch/hardware.h>
  22 #include <asm/arch/pxa-regs.h>
  23 #include <asm/arch/spitz.h>
  24
  25 static void spitzled_amber_set(struct led_classdev *led_cdev, 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, enum led_brightness value)
  34 {
  35         if (value)
  36                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
  37         else
  38                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
  39 }
  40
  41 static struct led_classdev spitz_amber_led = {
  42         .name                   = "spitz:amber",
  43         .default_trigger        = "sharpsl-charge",
  44         .brightness_set         = spitzled_amber_set,
  45 };
  46
  47 static struct led_classdev spitz_green_led = {
  48         .name                   = "spitz:green",
  49         .default_trigger        = "ide-disk",
  50         .brightness_set         = spitzled_green_set,
  51 };
  52
  53 #ifdef CONFIG_PM
  54 static int spitzled_suspend(struct platform_device *dev, pm_message_t state)
  55 {
  56 #ifdef CONFIG_LEDS_TRIGGERS
  57         if (spitz_amber_led.trigger && strcmp(spitz_amber_led.trigger->name, "sharpsl-charge"))
  58 #endif
  59                 led_classdev_suspend(&spitz_amber_led);
  60         led_classdev_suspend(&spitz_green_led);
  61         return 0;
  62 }
  63
  64 static int spitzled_resume(struct platform_device *dev)
  65 {
  66         led_classdev_resume(&spitz_amber_led);
  67         led_classdev_resume(&spitz_green_led);
  68         return 0;
  69 }
  70 #endif
  71
  72 static int spitzled_probe(struct platform_device *pdev)
  73 {
  74         int ret;
  75
  76         if (machine_is_akita())
  77                 spitz_green_led.default_trigger = "nand-disk";
  78
  79         ret = led_classdev_register(&pdev->dev, &spitz_amber_led);
  80         if (ret < 0)
  81                 return ret;
  82
  83         ret = led_classdev_register(&pdev->dev, &spitz_green_led);
  84         if (ret < 0)
  85                 led_classdev_unregister(&spitz_amber_led);
  86
  87         return ret;
  88 }
  89
  90 static int spitzled_remove(struct platform_device *pdev)
  91 {
  92         led_classdev_unregister(&spitz_amber_led);
  93         led_classdev_unregister(&spitz_green_led);
  94
  95         return 0;
  96 }
  97
  98 static struct platform_driver spitzled_driver = {
  99         .probe          = spitzled_probe,
 100         .remove         = spitzled_remove,
 101 #ifdef CONFIG_PM
 102         .suspend        = spitzled_suspend,
 103         .resume         = spitzled_resume,
 104 #endif
 105         .driver         = {
 106                 .name           = "spitz-led",
 107         },
 108 };
 109
 110 static int __init spitzled_init(void)
 111 {
 112         return platform_driver_register(&spitzled_driver);
 113 }
 114
 115 static void __exit spitzled_exit(void)
 116 {
 117         platform_driver_unregister(&spitzled_driver);
 118 }
 119
 120 module_init(spitzled_init);
 121 module_exit(spitzled_exit);
 122
 123 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
 124 MODULE_DESCRIPTION("Spitz LED driver");
 125 MODULE_LICENSE("GPL");