arch/arm/mach-pxa/himalaya/himalaya_leds.c

   1 /*
   2  * LED interface for Himalaya, the HTC PocketPC.
   3  *
   4  * License: GPL
   5  *
   6  * Author: Luke Kenneth Casson Leighton, Copyright(C) 2004
   7  *
   8  * Copyright(C) 2004, Luke Kenneth Casson Leighton.
   9  *
  10  * History:
  11  *
  12  * 2004-02-19   Luke Kenneth Casson Leighton    created.
  13  *
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/delay.h>
  18
  19 #include <asm/hardware/ipaq-asic3.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/arch/ipaq.h>
  22
  23 //#include "himalaya_leds.h"
  24
  25 extern struct platform_device himalaya_asic3;
  26 extern struct ipaq_model_ops ipaq_model_ops;
  27
  28 #define CLOCK_CDEX_LED0      (1 << 6)  /* clock for led 0? */
  29 #define CLOCK_CDEX_LED1      (1 << 7)  /* clock for led 1? */
  30
  31 void himalaya_set_led (enum led_color color, int duty_time, int cycle_time)
  32 {
  33         if (color == RED_LED)
  34         {
  35                 IPAQ_ASIC3_LED_TimeBase(H3900_ASIC3_VIRT, 0) = 0x6 | LEDTBS_BLINK;
  36                 IPAQ_ASIC3_LED_PeriodTime(H3900_ASIC3_VIRT, 0) = cycle_time;
  37                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 0) = 0;
  38                 udelay(1);
  39                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 0) = duty_time;
  40
  41                 IPAQ_ASIC3_LED_TimeBase(H3900_ASIC3_VIRT, 1) = 0x6 | LEDTBS_BLINK;
  42                 IPAQ_ASIC3_LED_PeriodTime(H3900_ASIC3_VIRT, 1) = cycle_time;
  43                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 1) = 0;
  44         };
  45
  46         if (color == GREEN_LED)
  47         {
  48                 IPAQ_ASIC3_LED_TimeBase(H3900_ASIC3_VIRT, 1) = 0x6 | LEDTBS_BLINK;
  49                 IPAQ_ASIC3_LED_PeriodTime(H3900_ASIC3_VIRT, 1) = cycle_time;
  50                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 1) = 0;
  51                 udelay(1);
  52                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 1) = duty_time;
  53
  54                 IPAQ_ASIC3_LED_TimeBase(H3900_ASIC3_VIRT, 0) = 0x6 | LEDTBS_BLINK;
  55                 IPAQ_ASIC3_LED_PeriodTime(H3900_ASIC3_VIRT, 0) = cycle_time;
  56                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 0) = 0;
  57         };
  58
  59         if (color == YELLOW_LED)
  60         {
  61                 IPAQ_ASIC3_LED_TimeBase(H3900_ASIC3_VIRT, 1) = 0x6 | LEDTBS_BLINK;
  62                 IPAQ_ASIC3_LED_PeriodTime(H3900_ASIC3_VIRT, 1) = cycle_time;
  63                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 1) = 0;
  64
  65                 IPAQ_ASIC3_LED_TimeBase(H3900_ASIC3_VIRT, 0) = 0x6 | LEDTBS_BLINK;
  66                 IPAQ_ASIC3_LED_PeriodTime(H3900_ASIC3_VIRT, 0) = cycle_time;
  67                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 0) = 0;
  68
  69                 udelay(1);
  70                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 1) = duty_time;
  71                 IPAQ_ASIC3_LED_DutyTime(H3900_ASIC3_VIRT, 0) = duty_time;
  72         };
  73
  74         if (color == BLUE_LED)
  75                 printk("%s: Blue LED not yet enabled.\n", __FUNCTION__);
  76 }
  77 EXPORT_SYMBOL(himalaya_set_led);
  78
  79 static int himalaya_led_init (void)
  80 {
  81         int retval = 0;
  82
  83         if (! machine_is_himalaya() )
  84                 return -ENODEV;
  85
  86         ipaq_model_ops.set_led = himalaya_set_led;
  87         return retval;
  88 }
  89
  90 static void himalaya_led_exit (void)
  91 {
  92         ipaq_model_ops.set_led = NULL;
  93 }
  94
  95 module_init (himalaya_led_init);
  96 module_exit (himalaya_led_exit);
  97