drivers/leds/leds-tosa.c

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