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/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/tosa.h>
  24
  25 static void tosaled_amber_set(struct led_classdev *led_cdev,
  26                                 enum led_brightness value)
  27 {
  28         if (value)
  29                 set_scoop_gpio(&tosascoop_jc_device.dev,
  30                                 TOSA_SCOOP_JC_CHRG_ERR_LED);
  31         else
  32                 reset_scoop_gpio(&tosascoop_jc_device.dev,
  33                                 TOSA_SCOOP_JC_CHRG_ERR_LED);
  34 }
  35
  36 static void tosaled_green_set(struct led_classdev *led_cdev,
  37                                 enum led_brightness value)
  38 {
  39         if (value)
  40                 set_scoop_gpio(&tosascoop_jc_device.dev,
  41                                 TOSA_SCOOP_JC_NOTE_LED);
  42         else
  43                 reset_scoop_gpio(&tosascoop_jc_device.dev,
  44                                 TOSA_SCOOP_JC_NOTE_LED);
  45 }
  46
  47 static struct led_classdev tosa_amber_led = {
  48         .name                   = "tosa:amber",
  49         .default_trigger        = "sharpsl-charge",
  50         .brightness_set         = tosaled_amber_set,
  51 };
  52
  53 static struct led_classdev tosa_green_led = {
  54         .name                   = "tosa:green",
  55         .default_trigger        = "nand-disk",
  56         .brightness_set         = tosaled_green_set,
  57 };
  58
  59 #ifdef CONFIG_PM
  60 static int tosaled_suspend(struct platform_device *dev, pm_message_t state)
  61 {
  62 #ifdef CONFIG_LEDS_TRIGGERS
  63         if (tosa_amber_led.trigger && strcmp(tosa_amber_led.trigger->name,
  64                                                 "sharpsl-charge"))
  65 #endif
  66                 led_classdev_suspend(&tosa_amber_led);
  67         led_classdev_suspend(&tosa_green_led);
  68         return 0;
  69 }
  70
  71 static int tosaled_resume(struct platform_device *dev)
  72 {
  73         led_classdev_resume(&tosa_amber_led);
  74         led_classdev_resume(&tosa_green_led);
  75         return 0;
  76 }
  77 #else
  78 #define tosaled_suspend NULL
  79 #define tosaled_resume NULL
  80 #endif
  81
  82 static int tosaled_probe(struct platform_device *pdev)
  83 {
  84         int ret;
  85
  86         ret = led_classdev_register(&pdev->dev, &tosa_amber_led);
  87         if (ret < 0)
  88                 return ret;
  89
  90         ret = led_classdev_register(&pdev->dev, &tosa_green_led);
  91         if (ret < 0)
  92                 led_classdev_unregister(&tosa_amber_led);
  93
  94         return ret;
  95 }
  96
  97 static int tosaled_remove(struct platform_device *pdev)
  98 {
  99         led_classdev_unregister(&tosa_amber_led);
 100         led_classdev_unregister(&tosa_green_led);
 101
 102         return 0;
 103 }
 104
 105 static struct platform_driver tosaled_driver = {
 106         .probe          = tosaled_probe,
 107         .remove         = tosaled_remove,
 108         .suspend        = tosaled_suspend,
 109         .resume         = tosaled_resume,
 110         .driver         = {
 111                 .name           = "tosa-led",
 112         },
 113 };
 114
 115 static int __init tosaled_init(void)
 116 {
 117         return platform_driver_register(&tosaled_driver);
 118 }
 119
 120 static void __exit tosaled_exit(void)
 121 {
 122         platform_driver_unregister(&tosaled_driver);
 123 }
 124
 125 module_init(tosaled_init);
 126 module_exit(tosaled_exit);
 127
 128 MODULE_AUTHOR("Dirk Opfer <Dirk@Opfer-Online.de>");
 129 MODULE_DESCRIPTION("Tosa LED driver");
 130 MODULE_LICENSE("GPL");