kernel/2.6.29.6-aldebaran-rt/arch/arm/plat-s3c24xx/common-smdk.c

   1 /* linux/arch/arm/plat-s3c24xx/common-smdk.c
   2  *
   3  * Copyright (c) 2006 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * Common code for SMDK2410 and SMDK2440 boards
   7  *
   8  * http://www.fluff.org/ben/smdk2440/
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/types.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/list.h>
  19 #include <linux/timer.h>
  20 #include <linux/init.h>
  21 #include <linux/sysdev.h>
  22 #include <linux/platform_device.h>
  23
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/nand.h>
  26 #include <linux/mtd/nand_ecc.h>
  27 #include <linux/mtd/partitions.h>
  28 #include <linux/io.h>
  29
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32 #include <asm/mach/irq.h>
  33
  34 #include <asm/mach-types.h>
  35 #include <mach/hardware.h>
  36 #include <asm/irq.h>
  37
  38 #include <mach/regs-gpio.h>
  39 #include <mach/leds-gpio.h>
  40
  41 #include <plat/nand.h>
  42
  43 #include <plat/common-smdk.h>
  44 #include <plat/devs.h>
  45 #include <plat/pm.h>
  46
  47 /* LED devices */
  48
  49 static struct s3c24xx_led_platdata smdk_pdata_led4 = {
  50         .gpio           = S3C2410_GPF4,
  51         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  52         .name           = "led4",
  53         .def_trigger    = "timer",
  54 };
  55
  56 static struct s3c24xx_led_platdata smdk_pdata_led5 = {
  57         .gpio           = S3C2410_GPF5,
  58         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  59         .name           = "led5",
  60         .def_trigger    = "nand-disk",
  61 };
  62
  63 static struct s3c24xx_led_platdata smdk_pdata_led6 = {
  64         .gpio           = S3C2410_GPF6,
  65         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  66         .name           = "led6",
  67 };
  68
  69 static struct s3c24xx_led_platdata smdk_pdata_led7 = {
  70         .gpio           = S3C2410_GPF7,
  71         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  72         .name           = "led7",
  73 };
  74
  75 static struct platform_device smdk_led4 = {
  76         .name           = "s3c24xx_led",
  77         .id             = 0,
  78         .dev            = {
  79                 .platform_data = &smdk_pdata_led4,
  80         },
  81 };
  82
  83 static struct platform_device smdk_led5 = {
  84         .name           = "s3c24xx_led",
  85         .id             = 1,
  86         .dev            = {
  87                 .platform_data = &smdk_pdata_led5,
  88         },
  89 };
  90
  91 static struct platform_device smdk_led6 = {
  92         .name           = "s3c24xx_led",
  93         .id             = 2,
  94         .dev            = {
  95                 .platform_data = &smdk_pdata_led6,
  96         },
  97 };
  98
  99 static struct platform_device smdk_led7 = {
 100         .name           = "s3c24xx_led",
 101         .id             = 3,
 102         .dev            = {
 103                 .platform_data = &smdk_pdata_led7,
 104         },
 105 };
 106
 107 /* NAND parititon from 2.4.18-swl5 */
 108
 109 static struct mtd_partition smdk_default_nand_part[] = {
 110         [0] = {
 111                 .name   = "Boot Agent",
 112                 .size   = SZ_16K,
 113                 .offset = 0,
 114         },
 115         [1] = {
 116                 .name   = "S3C2410 flash partition 1",
 117                 .offset = 0,
 118                 .size   = SZ_2M,
 119         },
 120         [2] = {
 121                 .name   = "S3C2410 flash partition 2",
 122                 .offset = SZ_4M,
 123                 .size   = SZ_4M,
 124         },
 125         [3] = {
 126                 .name   = "S3C2410 flash partition 3",
 127                 .offset = SZ_8M,
 128                 .size   = SZ_2M,
 129         },
 130         [4] = {
 131                 .name   = "S3C2410 flash partition 4",
 132                 .offset = SZ_1M * 10,
 133                 .size   = SZ_4M,
 134         },
 135         [5] = {
 136                 .name   = "S3C2410 flash partition 5",
 137                 .offset = SZ_1M * 14,
 138                 .size   = SZ_1M * 10,
 139         },
 140         [6] = {
 141                 .name   = "S3C2410 flash partition 6",
 142                 .offset = SZ_1M * 24,
 143                 .size   = SZ_1M * 24,
 144         },
 145         [7] = {
 146                 .name   = "S3C2410 flash partition 7",
 147                 .offset = SZ_1M * 48,
 148                 .size   = SZ_16M,
 149         }
 150 };
 151
 152 static struct s3c2410_nand_set smdk_nand_sets[] = {
 153         [0] = {
 154                 .name           = "NAND",
 155                 .nr_chips       = 1,
 156                 .nr_partitions  = ARRAY_SIZE(smdk_default_nand_part),
 157                 .partitions     = smdk_default_nand_part,
 158         },
 159 };
 160
 161 /* choose a set of timings which should suit most 512Mbit
 162  * chips and beyond.
 163 */
 164
 165 static struct s3c2410_platform_nand smdk_nand_info = {
 166         .tacls          = 20,
 167         .twrph0         = 60,
 168         .twrph1         = 20,
 169         .nr_sets        = ARRAY_SIZE(smdk_nand_sets),
 170         .sets           = smdk_nand_sets,
 171 };
 172
 173 /* devices we initialise */
 174
 175 static struct platform_device __initdata *smdk_devs[] = {
 176         &s3c_device_nand,
 177         &smdk_led4,
 178         &smdk_led5,
 179         &smdk_led6,
 180         &smdk_led7,
 181 };
 182
 183 void __init smdk_machine_init(void)
 184 {
 185         /* Configure the LEDs (even if we have no LED support)*/
 186
 187         s3c2410_gpio_cfgpin(S3C2410_GPF4, S3C2410_GPF4_OUTP);
 188         s3c2410_gpio_cfgpin(S3C2410_GPF5, S3C2410_GPF5_OUTP);
 189         s3c2410_gpio_cfgpin(S3C2410_GPF6, S3C2410_GPF6_OUTP);
 190         s3c2410_gpio_cfgpin(S3C2410_GPF7, S3C2410_GPF7_OUTP);
 191
 192         s3c2410_gpio_setpin(S3C2410_GPF4, 1);
 193         s3c2410_gpio_setpin(S3C2410_GPF5, 1);
 194         s3c2410_gpio_setpin(S3C2410_GPF6, 1);
 195         s3c2410_gpio_setpin(S3C2410_GPF7, 1);
 196
 197         if (machine_is_smdk2443())
 198                 smdk_nand_info.twrph0 = 50;
 199
 200         s3c_device_nand.dev.platform_data = &smdk_nand_info;
 201
 202         platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));
 203
 204         s3c2410_pm_init();
 205 }