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 #include <linux/gpio.h>
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16 #include <linux/smc91x.h>
  17
  18 #include <mach/hardware.h>
  19
  20 /* Many OMAP development platforms reuse the same "debug board"; these
  21  * platforms include H2, H3, H4, and Perseus2.
  22  */
  23
  24 static struct smc91x_platdata smc91x_info = {
  25         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
  26         .leda   = RPC_LED_100_10,
  27         .ledb   = RPC_LED_TX_RX,
  28 };
  29
  30 static struct resource smc91x_resources[] = {
  31         [0] = {
  32                 .flags  = IORESOURCE_MEM,
  33         },
  34         [1] = {
  35                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
  36         },
  37 };
  38
  39 static struct platform_device smc91x_device = {
  40         .name           = "smc91x",
  41         .id             = -1,
  42         .dev            = {
  43                 .platform_data = &smc91x_info,
  44         },
  45         .num_resources  = ARRAY_SIZE(smc91x_resources),
  46         .resource       = smc91x_resources,
  47 };
  48
  49 static struct resource led_resources[] = {
  50         [0] = {
  51                 .flags  = IORESOURCE_MEM,
  52         },
  53 };
  54
  55 static struct platform_device led_device = {
  56         .name           = "omap_dbg_led",
  57         .id             = -1,
  58         .num_resources  = ARRAY_SIZE(led_resources),
  59         .resource       = led_resources,
  60 };
  61
  62 static struct platform_device *debug_devices[] __initdata = {
  63         &smc91x_device,
  64         &led_device,
  65         /* ps2 kbd + mouse ports */
  66         /* 4 extra uarts */
  67         /* 6 input dip switches */
  68         /* 8 output pins */
  69 };
  70
  71 int __init debug_card_init(u32 addr, unsigned gpio)
  72 {
  73         int     status;
  74
  75         smc91x_resources[0].start = addr + 0x300;
  76         smc91x_resources[0].end   = addr + 0x30f;
  77
  78         smc91x_resources[1].start = gpio_to_irq(gpio);
  79         smc91x_resources[1].end   = gpio_to_irq(gpio);
  80
  81         status = gpio_request(gpio, "SMC91x irq");
  82         if (status < 0) {
  83                 printk(KERN_ERR "GPIO%d unavailable for smc91x IRQ\n", gpio);
  84                 return status;
  85         }
  86         gpio_direction_input(gpio);
  87
  88         led_resources[0].start = addr;
  89         led_resources[0].end   = addr + SZ_4K - 1;
  90
  91         return platform_add_devices(debug_devices, ARRAY_SIZE(debug_devices));
  92 }