SAFE public projects git trees. - safe/jmp/linux-2.6/blob - arch/arm/mach-mx3/mx31lite.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/types.h>
  22 #include <linux/init.h>
  23 #include <linux/kernel.h>
  24 #include <linux/memory.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/gpio.h>
  27 #include <linux/smsc911x.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/time.h>
  33 #include <asm/mach/map.h>
  34 #include <mach/common.h>
  35 #include <asm/page.h>
  36 #include <asm/setup.h>
  37 #include <mach/board-mx31lite.h>
  38 #include <mach/imx-uart.h>
  39 #include <mach/iomux-mx3.h>
  40 #include <mach/irqs.h>
  41 #include <mach/mxc_nand.h>
  42 #include "devices.h"
  43
  44 /*
  45  * This file contains the module-specific initialization routines.
  46  */
  47
  48 static unsigned int mx31lite_pins[] = {
  49         /* LAN9117 IRQ pin */
  50         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  51 };
  52
  53 static struct mxc_nand_platform_data mx31lite_nand_board_info = {
  54         .width = 1,
  55         .hw_ecc = 1,
  56 };
  57
  58 static struct smsc911x_platform_config smsc911x_config = {
  59         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  60         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  61         .flags          = SMSC911X_USE_16BIT,
  62 };
  63
  64 static struct resource smsc911x_resources[] = {
  65         {
  66                 .start          = CS4_BASE_ADDR,
  67                 .end            = CS4_BASE_ADDR + 0x100,
  68                 .flags          = IORESOURCE_MEM,
  69         }, {
  70                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  71                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  72                 .flags          = IORESOURCE_IRQ,
  73         },
  74 };
  75
  76 static struct platform_device smsc911x_device = {
  77         .name           = "smsc911x",
  78         .id             = -1,
  79         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  80         .resource       = smsc911x_resources,
  81         .dev            = {
  82                 .platform_data = &smsc911x_config,
  83         },
  84 };
  85
  86 /*
  87  * This structure defines the MX31 memory map.
  88  */
  89 static struct map_desc mx31lite_io_desc[] __initdata = {
  90         {
  91                 .virtual = SPBA0_BASE_ADDR_VIRT,
  92                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
  93                 .length = SPBA0_SIZE,
  94                 .type = MT_DEVICE_NONSHARED
  95         }, {
  96                 .virtual = CS4_BASE_ADDR_VIRT,
  97                 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
  98                 .length = CS4_SIZE,
  99                 .type = MT_DEVICE
 100         }
 101 };
 102
 103 /*
 104  * Set up static virtual mappings.
 105  */
 106 void __init mx31lite_map_io(void)
 107 {
 108         mx31_map_io();
 109         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 110 }
 111
 112 static int mx31lite_baseboard;
 113 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
 114
 115 static void __init mxc_board_init(void)
 116 {
 117         int ret;
 118
 119         switch (mx31lite_baseboard) {
 120         case MX31LITE_NOBOARD:
 121                 break;
 122         case MX31LITE_DB:
 123                 mx31lite_db_init();
 124                 break;
 125         default:
 126                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
 127                                 mx31lite_baseboard);
 128         }
 129
 130         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 131                                       "mx31lite");
 132
 133         mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);
 134
 135         /* SMSC9117 IRQ pin */
 136         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 137         if (ret)
 138                 pr_warning("could not get LAN irq gpio\n");
 139         else {
 140                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 141                 platform_device_register(&smsc911x_device);
 142         }
 143 }
 144
 145 static void __init mx31lite_timer_init(void)
 146 {
 147         mx31_clocks_init(26000000);
 148 }
 149
 150 struct sys_timer mx31lite_timer = {
 151         .init   = mx31lite_timer_init,
 152 };
 153
 154 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 155         /* Maintainer: Freescale Semiconductor, Inc. */
 156         .phys_io        = AIPS1_BASE_ADDR,
 157         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 158         .boot_params    = PHYS_OFFSET + 0x100,
 159         .map_io         = mx31lite_map_io,
 160         .init_irq       = mx31_init_irq,
 161         .init_machine   = mxc_board_init,
 162         .timer          = &mx31lite_timer,
 163 MACHINE_END