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  *  Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
   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 as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/init.h>
  24 #include <linux/kernel.h>
  25 #include <linux/memory.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/gpio.h>
  28 #include <linux/smsc911x.h>
  29 #include <linux/mfd/mc13783.h>
  30 #include <linux/spi/spi.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/time.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/page.h>
  37 #include <asm/setup.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/common.h>
  41 #include <mach/board-mx31lite.h>
  42 #include <mach/imx-uart.h>
  43 #include <mach/iomux-mx3.h>
  44 #include <mach/irqs.h>
  45 #include <mach/mxc_nand.h>
  46 #include <mach/spi.h>
  47
  48 #include "devices.h"
  49
  50 /*
  51  * This file contains the module-specific initialization routines.
  52  */
  53
  54 static unsigned int mx31lite_pins[] = {
  55         /* LAN9117 IRQ pin */
  56         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  57         /* SPI 1 */
  58         MX31_PIN_CSPI2_SCLK__SCLK,
  59         MX31_PIN_CSPI2_MOSI__MOSI,
  60         MX31_PIN_CSPI2_MISO__MISO,
  61         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  62         MX31_PIN_CSPI2_SS0__SS0,
  63         MX31_PIN_CSPI2_SS1__SS1,
  64         MX31_PIN_CSPI2_SS2__SS2,
  65 };
  66
  67 static struct mxc_nand_platform_data mx31lite_nand_board_info = {
  68         .width = 1,
  69         .hw_ecc = 1,
  70 };
  71
  72 static struct smsc911x_platform_config smsc911x_config = {
  73         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  74         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  75         .flags          = SMSC911X_USE_16BIT,
  76 };
  77
  78 static struct resource smsc911x_resources[] = {
  79         {
  80                 .start          = CS4_BASE_ADDR,
  81                 .end            = CS4_BASE_ADDR + 0x100,
  82                 .flags          = IORESOURCE_MEM,
  83         }, {
  84                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  85                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  86                 .flags          = IORESOURCE_IRQ,
  87         },
  88 };
  89
  90 static struct platform_device smsc911x_device = {
  91         .name           = "smsc911x",
  92         .id             = -1,
  93         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  94         .resource       = smsc911x_resources,
  95         .dev            = {
  96                 .platform_data = &smsc911x_config,
  97         },
  98 };
  99
 100 /*
 101  * SPI
 102  *
 103  * The MC13783 is the only hard-wired SPI device on the module.
 104  */
 105
 106 static int spi_internal_chipselect[] = {
 107         MXC_SPI_CS(0),
 108 };
 109
 110 static struct spi_imx_master spi1_pdata = {
 111         .chipselect     = spi_internal_chipselect,
 112         .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
 113 };
 114
 115 static struct mc13783_platform_data mc13783_pdata __initdata = {
 116         .flags  = MC13783_USE_RTC |
 117                   MC13783_USE_REGULATOR,
 118 };
 119
 120 static struct spi_board_info mc13783_spi_dev __initdata = {
 121         .modalias       = "mc13783",
 122         .max_speed_hz   = 1000000,
 123         .bus_num        = 1,
 124         .chip_select    = 0,
 125         .platform_data  = &mc13783_pdata,
 126         .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 127 };
 128
 129 /*
 130  * This structure defines the MX31 memory map.
 131  */
 132 static struct map_desc mx31lite_io_desc[] __initdata = {
 133         {
 134                 .virtual = SPBA0_BASE_ADDR_VIRT,
 135                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
 136                 .length = SPBA0_SIZE,
 137                 .type = MT_DEVICE_NONSHARED
 138         }, {
 139                 .virtual = CS4_BASE_ADDR_VIRT,
 140                 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
 141                 .length = CS4_SIZE,
 142                 .type = MT_DEVICE
 143         }
 144 };
 145
 146 /*
 147  * Set up static virtual mappings.
 148  */
 149 void __init mx31lite_map_io(void)
 150 {
 151         mx31_map_io();
 152         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 153 }
 154
 155 static int mx31lite_baseboard;
 156 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
 157
 158 static void __init mxc_board_init(void)
 159 {
 160         int ret;
 161
 162         switch (mx31lite_baseboard) {
 163         case MX31LITE_NOBOARD:
 164                 break;
 165         case MX31LITE_DB:
 166                 mx31lite_db_init();
 167                 break;
 168         default:
 169                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
 170                                 mx31lite_baseboard);
 171         }
 172
 173         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 174                                       "mx31lite");
 175
 176         mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);
 177         mxc_register_device(&mxc_spi_device1, &spi1_pdata);
 178         spi_register_board_info(&mc13783_spi_dev, 1);
 179
 180         /* SMSC9117 IRQ pin */
 181         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 182         if (ret)
 183                 pr_warning("could not get LAN irq gpio\n");
 184         else {
 185                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 186                 platform_device_register(&smsc911x_device);
 187         }
 188 }
 189
 190 static void __init mx31lite_timer_init(void)
 191 {
 192         mx31_clocks_init(26000000);
 193 }
 194
 195 struct sys_timer mx31lite_timer = {
 196         .init   = mx31lite_timer_init,
 197 };
 198
 199 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 200         /* Maintainer: Freescale Semiconductor, Inc. */
 201         .phys_io        = AIPS1_BASE_ADDR,
 202         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 203         .boot_params    = PHYS_OFFSET + 0x100,
 204         .map_io         = mx31lite_map_io,
 205         .init_irq       = mx31_init_irq,
 206         .init_machine   = mxc_board_init,
 207         .timer          = &mx31lite_timer,
 208 MACHINE_END