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/gpio.h>
  22 #include <linux/sysdev.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/leds-gpio.h>
  41
  42 #include <plat/nand.h>
  43
  44 #include <plat/common-smdk.h>
  45 #include <plat/gpio-cfg.h>
  46 #include <plat/devs.h>
  47 #include <plat/pm.h>
  48
  49 /* LED devices */
  50
  51 static struct s3c24xx_led_platdata smdk_pdata_led4 = {
  52         .gpio           = S3C2410_GPF(4),
  53         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  54         .name           = "led4",
  55         .def_trigger    = "timer",
  56 };
  57
  58 static struct s3c24xx_led_platdata smdk_pdata_led5 = {
  59         .gpio           = S3C2410_GPF(5),
  60         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  61         .name           = "led5",
  62         .def_trigger    = "nand-disk",
  63 };
  64
  65 static struct s3c24xx_led_platdata smdk_pdata_led6 = {
  66         .gpio           = S3C2410_GPF(6),
  67         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  68         .name           = "led6",
  69 };
  70
  71 static struct s3c24xx_led_platdata smdk_pdata_led7 = {
  72         .gpio           = S3C2410_GPF(7),
  73         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  74         .name           = "led7",
  75 };
  76
  77 static struct platform_device smdk_led4 = {
  78         .name           = "s3c24xx_led",
  79         .id             = 0,
  80         .dev            = {
  81                 .platform_data = &smdk_pdata_led4,
  82         },
  83 };
  84
  85 static struct platform_device smdk_led5 = {
  86         .name           = "s3c24xx_led",
  87         .id             = 1,
  88         .dev            = {
  89                 .platform_data = &smdk_pdata_led5,
  90         },
  91 };
  92
  93 static struct platform_device smdk_led6 = {
  94         .name           = "s3c24xx_led",
  95         .id             = 2,
  96         .dev            = {
  97                 .platform_data = &smdk_pdata_led6,
  98         },
  99 };
 100
 101 static struct platform_device smdk_led7 = {
 102         .name           = "s3c24xx_led",
 103         .id             = 3,
 104         .dev            = {
 105                 .platform_data = &smdk_pdata_led7,
 106         },
 107 };
 108
 109 /* NAND parititon from 2.4.18-swl5 */
 110
 111 static struct mtd_partition smdk_default_nand_part[] = {
 112         [0] = {
 113                 .name   = "Boot Agent",
 114                 .size   = SZ_16K,
 115                 .offset = 0,
 116         },
 117         [1] = {
 118                 .name   = "S3C2410 flash partition 1",
 119                 .offset = 0,
 120                 .size   = SZ_2M,
 121         },
 122         [2] = {
 123                 .name   = "S3C2410 flash partition 2",
 124                 .offset = SZ_4M,
 125                 .size   = SZ_4M,
 126         },
 127         [3] = {
 128                 .name   = "S3C2410 flash partition 3",
 129                 .offset = SZ_8M,
 130                 .size   = SZ_2M,
 131         },
 132         [4] = {
 133                 .name   = "S3C2410 flash partition 4",
 134                 .offset = SZ_1M * 10,
 135                 .size   = SZ_4M,
 136         },
 137         [5] = {
 138                 .name   = "S3C2410 flash partition 5",
 139                 .offset = SZ_1M * 14,
 140                 .size   = SZ_1M * 10,
 141         },
 142         [6] = {
 143                 .name   = "S3C2410 flash partition 6",
 144                 .offset = SZ_1M * 24,
 145                 .size   = SZ_1M * 24,
 146         },
 147         [7] = {
 148                 .name   = "S3C2410 flash partition 7",
 149                 .offset = SZ_1M * 48,
 150                 .size   = SZ_16M,
 151         }
 152 };
 153
 154 static struct s3c2410_nand_set smdk_nand_sets[] = {
 155         [0] = {
 156                 .name           = "NAND",
 157                 .nr_chips       = 1,
 158                 .nr_partitions  = ARRAY_SIZE(smdk_default_nand_part),
 159                 .partitions     = smdk_default_nand_part,
 160         },
 161 };
 162
 163 /* choose a set of timings which should suit most 512Mbit
 164  * chips and beyond.
 165 */
 166
 167 static struct s3c2410_platform_nand smdk_nand_info = {
 168         .tacls          = 20,
 169         .twrph0         = 60,
 170         .twrph1         = 20,
 171         .nr_sets        = ARRAY_SIZE(smdk_nand_sets),
 172         .sets           = smdk_nand_sets,
 173 };
 174
 175 /* devices we initialise */
 176
 177 static struct platform_device __initdata *smdk_devs[] = {
 178         &s3c_device_nand,
 179         &smdk_led4,
 180         &smdk_led5,
 181         &smdk_led6,
 182         &smdk_led7,
 183 };
 184
 185 void __init smdk_machine_init(void)
 186 {
 187         /* Configure the LEDs (even if we have no LED support)*/
 188
 189         s3c_gpio_cfgpin(S3C2410_GPF(4), S3C2410_GPIO_OUTPUT);
 190         s3c_gpio_cfgpin(S3C2410_GPF(5), S3C2410_GPIO_OUTPUT);
 191         s3c_gpio_cfgpin(S3C2410_GPF(6), S3C2410_GPIO_OUTPUT);
 192         s3c_gpio_cfgpin(S3C2410_GPF(7), S3C2410_GPIO_OUTPUT);
 193
 194         s3c2410_gpio_setpin(S3C2410_GPF(4), 1);
 195         s3c2410_gpio_setpin(S3C2410_GPF(5), 1);
 196         s3c2410_gpio_setpin(S3C2410_GPF(6), 1);
 197         s3c2410_gpio_setpin(S3C2410_GPF(7), 1);
 198
 199         if (machine_is_smdk2443())
 200                 smdk_nand_info.twrph0 = 50;
 201
 202         s3c_nand_set_platdata(&smdk_nand_info);
 203
 204         platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));
 205
 206         s3c_pm_init();
 207 }