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 #include <linux/smc91x.h>
  17
  18 #include <mach/hardware.h>
  19
  20 #include <plat/board.h>
  21 #include <mach/gpio.h>
  22
  23
  24 /* Many OMAP development platforms reuse the same "debug board"; these
  25  * platforms include H2, H3, H4, and Perseus2.
  26  */
  27
  28 static struct smc91x_platdata smc91x_info = {
  29         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
  30         .leda   = RPC_LED_100_10,
  31         .ledb   = RPC_LED_TX_RX,
  32 };
  33
  34 static struct resource smc91x_resources[] = {
  35         [0] = {
  36                 .flags  = IORESOURCE_MEM,
  37         },
  38         [1] = {
  39                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
  40         },
  41 };
  42
  43 static struct platform_device smc91x_device = {
  44         .name           = "smc91x",
  45         .id             = -1,
  46         .dev            = {
  47                 .platform_data = &smc91x_info,
  48         },
  49         .num_resources  = ARRAY_SIZE(smc91x_resources),
  50         .resource       = smc91x_resources,
  51 };
  52
  53 static struct resource led_resources[] = {
  54         [0] = {
  55                 .flags  = IORESOURCE_MEM,
  56         },
  57 };
  58
  59 static struct platform_device led_device = {
  60         .name           = "omap_dbg_led",
  61         .id             = -1,
  62         .num_resources  = ARRAY_SIZE(led_resources),
  63         .resource       = led_resources,
  64 };
  65
  66 static struct platform_device *debug_devices[] __initdata = {
  67         &smc91x_device,
  68         &led_device,
  69         /* ps2 kbd + mouse ports */
  70         /* 4 extra uarts */
  71         /* 6 input dip switches */
  72         /* 8 output pins */
  73 };
  74
  75 int __init debug_card_init(u32 addr, unsigned gpio)
  76 {
  77         int     status;
  78
  79         smc91x_resources[0].start = addr + 0x300;
  80         smc91x_resources[0].end   = addr + 0x30f;
  81
  82         smc91x_resources[1].start = gpio_to_irq(gpio);
  83         smc91x_resources[1].end   = gpio_to_irq(gpio);
  84
  85         status = gpio_request(gpio, "SMC91x irq");
  86         if (status < 0) {
  87                 printk(KERN_ERR "GPIO%d unavailable for smc91x IRQ\n", gpio);
  88                 return status;
  89         }
  90         gpio_direction_input(gpio);
  91
  92         led_resources[0].start = addr;
  93         led_resources[0].end   = addr + SZ_4K - 1;
  94
  95         return platform_add_devices(debug_devices, ARRAY_SIZE(debug_devices));
  96 }