target/linux/at91-2.6/patches/002-led-driver.patch

   1 diff -urN linux-2.6.19.2.old/arch/arm/mach-at91rm9200/Makefile linux-2.6.19.2/arch/arm/mach-at91rm9200/Makefile
   2 --- linux-2.6.19.2.old/arch/arm/mach-at91rm9200/Makefile        2007-03-06 11:29:37.000000000 +0100
   3 +++ linux-2.6.19.2/arch/arm/mach-at91rm9200/Makefile    2007-03-06 20:52:28.000000000 +0100
   4 @@ -40,6 +40,7 @@
   5  led-$(CONFIG_MACH_CSB637)      += leds.o
   6  led-$(CONFIG_MACH_KB9200)      += leds.o
   7  led-$(CONFIG_MACH_KAFA)                += leds.o
   8 +led-$(CONFIG_MACH_VLINK)  += vlink_leds.o
   9  obj-$(CONFIG_LEDS) += $(led-y)
  10
  11  # VGA support
  12 diff -urN linux-2.6.19.2.old/arch/arm/mach-at91rm9200/vlink_leds.c linux-2.6.19.2/arch/arm/mach-at91rm9200/vlink_leds.c
  13 --- linux-2.6.19.2.old/arch/arm/mach-at91rm9200/vlink_leds.c    1970-01-01 01:00:00.000000000 +0100
  14 +++ linux-2.6.19.2/arch/arm/mach-at91rm9200/vlink_leds.c        2007-03-06 21:11:16.000000000 +0100
  15 @@ -0,0 +1,151 @@
  16 +/*
  17 + * LED driver for Atmel AT91-based boards.
  18 + *
  19 + *  Copyright (C) SAN People (Pty) Ltd
  20 + *
  21 + * Modified for FDL Versalink board (c) Guthrie Consulting
  22 + *
  23 + * This program is free software; you can redistribute it and/or
  24 + * modify it under the terms of the GNU General Public License
  25 + * as published by the Free Software Foundation; either version
  26 + * 2 of the License, or (at your option) any later version.
  27 +*/
  28 +
  29 +#include <linux/kernel.h>
  30 +#include <linux/module.h>
  31 +#include <linux/init.h>
  32 +
  33 +#include <asm/mach-types.h>
  34 +#include <asm/leds.h>
  35 +#include <asm/arch/board.h>
  36 +#include <asm/arch/gpio.h>
  37 +
  38 +#define LED_CPU 0
  39 +#define LED_TIMER 1
  40 +#define LED_COM1 2
  41 +#define LED_COM2 3
  42 +
  43 +static inline void at91_led_on(unsigned int led)
  44 +{
  45 +       at91_set_gpio_value(led, 0);
  46 +}
  47 +
  48 +static inline void at91_led_off(unsigned int led)
  49 +{
  50 +       at91_set_gpio_value(led, 1);
  51 +}
  52 +
  53 +static inline void at91_led_toggle(unsigned int led)
  54 +{
  55 +       unsigned long is_off = at91_get_gpio_value(AT91_PIN_PC7);
  56 +       if (is_off) {
  57 +               at91_set_gpio_value(AT91_PIN_PC7, 0);
  58 +               at91_set_gpio_value(AT91_PIN_PC8, 1);
  59 +       } else {
  60 +               at91_set_gpio_value(AT91_PIN_PC7, 1);
  61 +               at91_set_gpio_value(AT91_PIN_PC8, 0);
  62 +       }
  63 +}
  64 +
  65 +
  66 +/*
  67 + * Handle LED events.
  68 + */
  69 +static void at91_leds_event(led_event_t evt)
  70 +{
  71 +       unsigned long flags;
  72 +
  73 +       local_irq_save(flags);
  74 +
  75 +       switch(evt) {
  76 +       case led_start:         /* System startup */
  77 +//             at91_led_on(at91_leds_cpu);
  78 +               at91_led_toggle(at91_leds_timer);
  79 +/*
  80 +               at91_set_gpio_value(AT91_PIN_PC7, 0);
  81 +               at91_set_gpio_value(AT91_PIN_PC8, 1);
  82 +*/
  83 +               break;
  84 +
  85 +       case led_stop:          /* System stop / suspend */
  86 +               at91_led_toggle(at91_leds_timer);
  87 +/*
  88 +               at91_set_gpio_value(AT91_PIN_PC7, 1);
  89 +               at91_set_gpio_value(AT91_PIN_PC8, 0);
  90 +*/
  91 +               break;
  92 +
  93 +#ifdef CONFIG_LEDS_TIMER
  94 +       case led_timer:         /* Every 50 timer ticks */
  95 +               at91_led_toggle(at91_leds_timer);
  96 +               break;
  97 +#endif
  98 +
  99 +#ifdef CONFIG_LEDS_CPU
 100 +       case led_idle_start:    /* Entering idle state */
 101 +               at91_led_toggle(at91_leds_timer);
 102 +/*
 103 +               at91_set_gpio_value(AT91_PIN_PC7, 1);
 104 +               at91_set_gpio_value(AT91_PIN_PC8, 0);
 105 +*/
 106 +               break;
 107 +
 108 +       case led_idle_end:      /* Exit idle state */
 109 +               at91_led_toggle(at91_leds_timer);
 110 +/*
 111 +               at91_set_gpio_value(AT91_PIN_PC7, 0);
 112 +               at91_set_gpio_value(AT91_PIN_PC8, 1);
 113 +*/
 114 +               break;
 115 +#endif
 116 +
 117 +       default:
 118 +               break;
 119 +       }
 120 +
 121 +       local_irq_restore(flags);
 122 +}
 123 +
 124 +
 125 +static int __init leds_init(void)
 126 +{
 127 +/*     if (!at91_leds_timer || !at91_leds_cpu)
 128 +               return -ENODEV;
 129 +*/
 130 +//     printk("leds_init()\n");
 131 +
 132 +       /* Enable PIO to access the LEDs */
 133 +       at91_set_gpio_output(AT91_PIN_PC7, 1);
 134 +       at91_set_gpio_output(AT91_PIN_PC8, 1);
 135 +       at91_set_gpio_output(AT91_PIN_PC14, 1);
 136 +       at91_set_gpio_output(AT91_PIN_PC15, 1);
 137 +       at91_set_gpio_output(AT91_PIN_PB14, 1);
 138 +       at91_set_gpio_output(AT91_PIN_PB15, 1);
 139 +       at91_set_gpio_output(AT91_PIN_PB16, 1);
 140 +       at91_set_gpio_output(AT91_PIN_PB17, 1);
 141 +
 142 +       at91_set_gpio_output(AT91_PIN_PB9, 1);
 143 +       at91_set_gpio_output(AT91_PIN_PB10, 1);
 144 +       at91_set_gpio_output(AT91_PIN_PB11, 1);
 145 +       at91_set_gpio_output(AT91_PIN_PB12, 1);
 146 +
 147 +       at91_set_gpio_input(AT91_PIN_PB8, 1);
 148 +       at91_set_gpio_input(AT91_PIN_PB22, 1);
 149 +       at91_set_gpio_input(AT91_PIN_PA19, 1);
 150 +       at91_set_gpio_input(AT91_PIN_PA24, 1);
 151 +       at91_set_gpio_output(AT91_PIN_PA29, 1);
 152 +       at91_set_gpio_output(AT91_PIN_PB2, 1);
 153 +       at91_set_gpio_output(AT91_PIN_PB3, 1);
 154 +       at91_set_gpio_output(AT91_PIN_PB4, 1);
 155 +
 156 +       at91_set_gpio_input(AT91_PIN_PB27, 1);
 157 +       at91_set_gpio_input(AT91_PIN_PB28, 1);
 158 +       at91_set_gpio_input(AT91_PIN_PB29, 1);
 159 +
 160 +       leds_event = at91_leds_event;
 161 +
 162 +       leds_event(led_start);
 163 +       return 0;
 164 +}
 165 +
 166 +__initcall(leds_init);