arch/arm/plat-omap/debug-devices.c

   1 /*
   2  * linux/arch/arm/plat-omap/debug-devices.c
   3  *
   4  * Copyright (C) 2005 Nokia Corporation
   5  * Modified from mach-omap2/board-h4.c
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16
  17 #include <mach/hardware.h>
  18
  19 #include <mach/board.h>
  20 #include <mach/gpio.h>
  21
  22
  23 /* Many OMAP development platforms reuse the same "debug board"; these
  24  * platforms include H2, H3, H4, and Perseus2.
  25  */
  26
  27 static struct resource smc91x_resources[] = {
  28         [0] = {
  29                 .flags  = IORESOURCE_MEM,
  30         },
  31         [1] = {
  32                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
  33         },
  34 };
  35
  36 static struct platform_device smc91x_device = {
  37         .name           = "smc91x",
  38         .id             = -1,
  39         .num_resources  = ARRAY_SIZE(smc91x_resources),
  40         .resource       = smc91x_resources,
  41 };
  42
  43 static struct resource led_resources[] = {
  44         [0] = {
  45                 .flags  = IORESOURCE_MEM,
  46         },
  47 };
  48
  49 static struct platform_device led_device = {
  50         .name           = "omap_dbg_led",
  51         .id             = -1,
  52         .num_resources  = ARRAY_SIZE(led_resources),
  53         .resource       = led_resources,
  54 };
  55
  56 static struct platform_device *debug_devices[] __initdata = {
  57         &smc91x_device,
  58         &led_device,
  59         /* ps2 kbd + mouse ports */
  60         /* 4 extra uarts */
  61         /* 6 input dip switches */
  62         /* 8 output pins */
  63 };
  64
  65 int __init debug_card_init(u32 addr, unsigned gpio)
  66 {
  67         int     status;
  68
  69         smc91x_resources[0].start = addr + 0x300;
  70         smc91x_resources[0].end   = addr + 0x30f;
  71
  72         smc91x_resources[1].start = gpio_to_irq(gpio);
  73         smc91x_resources[1].end   = gpio_to_irq(gpio);
  74
  75         status = gpio_request(gpio, "SMC91x irq");
  76         if (status < 0) {
  77                 printk(KERN_ERR "GPIO%d unavailable for smc91x IRQ\n", gpio);
  78                 return status;
  79         }
  80         gpio_direction_input(gpio);
  81
  82         led_resources[0].start = addr;
  83         led_resources[0].end   = addr + SZ_4K - 1;
  84
  85         return platform_add_devices(debug_devices, ARRAY_SIZE(debug_devices));
  86 }