arch/arm/mach-omap1/leds.c

   1 /*
   2  * linux/arch/arm/mach-omap1/leds.c
   3  *
   4  * OMAP LEDs dispatcher
   5  */
   6 #include <linux/kernel.h>
   7 #include <linux/init.h>
   8
   9 #include <asm/leds.h>
  10 #include <asm/mach-types.h>
  11
  12 #include <mach/gpio.h>
  13 #include <mach/mux.h>
  14
  15 #include "leds.h"
  16
  17 static int __init
  18 omap_leds_init(void)
  19 {
  20         if (machine_is_omap_innovator())
  21                 leds_event = innovator_leds_event;
  22
  23         else if (machine_is_omap_h2()
  24                         || machine_is_omap_h3()
  25                         || machine_is_omap_perseus2())
  26                 leds_event = h2p2_dbg_leds_event;
  27
  28         else if (machine_is_omap_osk())
  29                 leds_event = osk_leds_event;
  30
  31         else
  32                 return -1;
  33
  34         if (machine_is_omap_h2()
  35                         || machine_is_omap_h3()
  36 #ifdef  CONFIG_OMAP_OSK_MISTRAL
  37                         || machine_is_omap_osk()
  38 #endif
  39                         ) {
  40
  41                 /* LED1/LED2 pins can be used as GPIO (as done here), or by
  42                  * the LPG (works even in deep sleep!), to drive a bicolor
  43                  * LED on the H2 sample board, and another on the H2/P2
  44                  * "surfer" expansion board.
  45                  *
  46                  * The same pins drive a LED on the OSK Mistral board, but
  47                  * that's a different kind of LED (just one color at a time).
  48                  */
  49                 omap_cfg_reg(P18_1610_GPIO3);
  50                 if (gpio_request(3, "LED red") == 0)
  51                         gpio_direction_output(3, 1);
  52                 else
  53                         printk(KERN_WARNING "LED: can't get GPIO3/red?\n");
  54
  55                 omap_cfg_reg(MPUIO4);
  56                 if (gpio_request(OMAP_MPUIO(4), "LED green") == 0)
  57                         gpio_direction_output(OMAP_MPUIO(4), 1);
  58                 else
  59                         printk(KERN_WARNING "LED: can't get MPUIO4/green?\n");
  60         }
  61
  62         leds_event(led_start);
  63         return 0;
  64 }
  65
  66 __initcall(omap_leds_init);