kernel/arch/arm/mach-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/gpio.h>
  22 #include <linux/device.h>
  23 #include <linux/platform_device.h>
  24
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/nand.h>
  27 #include <linux/mtd/nand_ecc.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/io.h>
  30
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/irq.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <mach/hardware.h>
  37 #include <asm/irq.h>
  38
  39 #include <mach/regs-gpio.h>
  40 #include <mach/gpio-samsung.h>
  41 #include <linux/platform_data/leds-s3c24xx.h>
  42 #include <linux/platform_data/mtd-nand-s3c2410.h>
  43
  44 #include <plat/gpio-cfg.h>
  45 #include <plat/devs.h>
  46 #include <plat/pm.h>
  47
  48 #include "common-smdk.h"
  49
  50 /* LED devices */
  51
  52 static struct s3c24xx_led_platdata smdk_pdata_led4 = {
  53         .gpio           = S3C2410_GPF(4),
  54         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  55         .name           = "led4",
  56         .def_trigger    = "timer",
  57 };
  58
  59 static struct s3c24xx_led_platdata smdk_pdata_led5 = {
  60         .gpio           = S3C2410_GPF(5),
  61         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  62         .name           = "led5",
  63         .def_trigger    = "nand-disk",
  64 };
  65
  66 static struct s3c24xx_led_platdata smdk_pdata_led6 = {
  67         .gpio           = S3C2410_GPF(6),
  68         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  69         .name           = "led6",
  70 };
  71
  72 static struct s3c24xx_led_platdata smdk_pdata_led7 = {
  73         .gpio           = S3C2410_GPF(7),
  74         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  75         .name           = "led7",
  76 };
  77
  78 static struct platform_device smdk_led4 = {
  79         .name           = "s3c24xx_led",
  80         .id             = 0,
  81         .dev            = {
  82                 .platform_data = &smdk_pdata_led4,
  83         },
  84 };
  85
  86 static struct platform_device smdk_led5 = {
  87         .name           = "s3c24xx_led",
  88         .id             = 1,
  89         .dev            = {
  90                 .platform_data = &smdk_pdata_led5,
  91         },
  92 };
  93
  94 static struct platform_device smdk_led6 = {
  95         .name           = "s3c24xx_led",
  96         .id             = 2,
  97         .dev            = {
  98                 .platform_data = &smdk_pdata_led6,
  99         },
 100 };
 101
 102 static struct platform_device smdk_led7 = {
 103         .name           = "s3c24xx_led",
 104         .id             = 3,
 105         .dev            = {
 106                 .platform_data = &smdk_pdata_led7,
 107         },
 108 };
 109
 110 /* NAND parititon from 2.4.18-swl5 */
 111
 112 static struct mtd_partition smdk_default_nand_part[] = {
 113         [0] = {
 114                 .name   = "Boot Agent",
 115                 .size   = SZ_16K,
 116                 .offset = 0,
 117         },
 118         [1] = {
 119                 .name   = "S3C2410 flash partition 1",
 120                 .offset = 0,
 121                 .size   = SZ_2M,
 122         },
 123         [2] = {
 124                 .name   = "S3C2410 flash partition 2",
 125                 .offset = SZ_4M,
 126                 .size   = SZ_4M,
 127         },
 128         [3] = {
 129                 .name   = "S3C2410 flash partition 3",
 130                 .offset = SZ_8M,
 131                 .size   = SZ_2M,
 132         },
 133         [4] = {
 134                 .name   = "S3C2410 flash partition 4",
 135                 .offset = SZ_1M * 10,
 136                 .size   = SZ_4M,
 137         },
 138         [5] = {
 139                 .name   = "S3C2410 flash partition 5",
 140                 .offset = SZ_1M * 14,
 141                 .size   = SZ_1M * 10,
 142         },
 143         [6] = {
 144                 .name   = "S3C2410 flash partition 6",
 145                 .offset = SZ_1M * 24,
 146                 .size   = SZ_1M * 24,
 147         },
 148         [7] = {
 149                 .name   = "S3C2410 flash partition 7",
 150                 .offset = SZ_1M * 48,
 151                 .size   = MTDPART_SIZ_FULL,
 152         }
 153 };
 154
 155 static struct s3c2410_nand_set smdk_nand_sets[] = {
 156         [0] = {
 157                 .name           = "NAND",
 158                 .nr_chips       = 1,
 159                 .nr_partitions  = ARRAY_SIZE(smdk_default_nand_part),
 160                 .partitions     = smdk_default_nand_part,
 161         },
 162 };
 163
 164 /* choose a set of timings which should suit most 512Mbit
 165  * chips and beyond.
 166 */
 167
 168 static struct s3c2410_platform_nand smdk_nand_info = {
 169         .tacls          = 20,
 170         .twrph0         = 60,
 171         .twrph1         = 20,
 172         .nr_sets        = ARRAY_SIZE(smdk_nand_sets),
 173         .sets           = smdk_nand_sets,
 174 };
 175
 176 /* devices we initialise */
 177
 178 static struct platform_device __initdata *smdk_devs[] = {
 179         &s3c_device_nand,
 180         &smdk_led4,
 181         &smdk_led5,
 182         &smdk_led6,
 183         &smdk_led7,
 184 };
 185
 186 static const struct gpio smdk_led_gpios[] = {
 187         { S3C2410_GPF(4), GPIOF_OUT_INIT_HIGH, NULL },
 188         { S3C2410_GPF(5), GPIOF_OUT_INIT_HIGH, NULL },
 189         { S3C2410_GPF(6), GPIOF_OUT_INIT_HIGH, NULL },
 190         { S3C2410_GPF(7), GPIOF_OUT_INIT_HIGH, NULL },
 191 };
 192
 193 void __init smdk_machine_init(void)
 194 {
 195         /* Configure the LEDs (even if we have no LED support)*/
 196
 197         int ret = gpio_request_array(smdk_led_gpios,
 198                                      ARRAY_SIZE(smdk_led_gpios));
 199         if (!WARN_ON(ret < 0))
 200                 gpio_free_array(smdk_led_gpios, ARRAY_SIZE(smdk_led_gpios));
 201
 202         if (machine_is_smdk2443())
 203                 smdk_nand_info.twrph0 = 50;
 204
 205         s3c_nand_set_platdata(&smdk_nand_info);
 206
 207         platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));
 208
 209         s3c_pm_init();
 210 }