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   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/devs.h>
  46 #include <plat/pm.h>
  47
  48 /* LED devices */
  49
  50 static struct s3c24xx_led_platdata smdk_pdata_led4 = {
  51         .gpio           = S3C2410_GPF(4),
  52         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  53         .name           = "led4",
  54         .def_trigger    = "timer",
  55 };
  56
  57 static struct s3c24xx_led_platdata smdk_pdata_led5 = {
  58         .gpio           = S3C2410_GPF(5),
  59         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  60         .name           = "led5",
  61         .def_trigger    = "nand-disk",
  62 };
  63
  64 static struct s3c24xx_led_platdata smdk_pdata_led6 = {
  65         .gpio           = S3C2410_GPF(6),
  66         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  67         .name           = "led6",
  68 };
  69
  70 static struct s3c24xx_led_platdata smdk_pdata_led7 = {
  71         .gpio           = S3C2410_GPF(7),
  72         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
  73         .name           = "led7",
  74 };
  75
  76 static struct platform_device smdk_led4 = {
  77         .name           = "s3c24xx_led",
  78         .id             = 0,
  79         .dev            = {
  80                 .platform_data = &smdk_pdata_led4,
  81         },
  82 };
  83
  84 static struct platform_device smdk_led5 = {
  85         .name           = "s3c24xx_led",
  86         .id             = 1,
  87         .dev            = {
  88                 .platform_data = &smdk_pdata_led5,
  89         },
  90 };
  91
  92 static struct platform_device smdk_led6 = {
  93         .name           = "s3c24xx_led",
  94         .id             = 2,
  95         .dev            = {
  96                 .platform_data = &smdk_pdata_led6,
  97         },
  98 };
  99
 100 static struct platform_device smdk_led7 = {
 101         .name           = "s3c24xx_led",
 102         .id             = 3,
 103         .dev            = {
 104                 .platform_data = &smdk_pdata_led7,
 105         },
 106 };
 107
 108 /* NAND parititon from 2.4.18-swl5 */
 109
 110 static struct mtd_partition smdk_default_nand_part[] = {
 111         [0] = {
 112                 .name   = "Boot Agent",
 113                 .size   = SZ_16K,
 114                 .offset = 0,
 115         },
 116         [1] = {
 117                 .name   = "S3C2410 flash partition 1",
 118                 .offset = 0,
 119                 .size   = SZ_2M,
 120         },
 121         [2] = {
 122                 .name   = "S3C2410 flash partition 2",
 123                 .offset = SZ_4M,
 124                 .size   = SZ_4M,
 125         },
 126         [3] = {
 127                 .name   = "S3C2410 flash partition 3",
 128                 .offset = SZ_8M,
 129                 .size   = SZ_2M,
 130         },
 131         [4] = {
 132                 .name   = "S3C2410 flash partition 4",
 133                 .offset = SZ_1M * 10,
 134                 .size   = SZ_4M,
 135         },
 136         [5] = {
 137                 .name   = "S3C2410 flash partition 5",
 138                 .offset = SZ_1M * 14,
 139                 .size   = SZ_1M * 10,
 140         },
 141         [6] = {
 142                 .name   = "S3C2410 flash partition 6",
 143                 .offset = SZ_1M * 24,
 144                 .size   = SZ_1M * 24,
 145         },
 146         [7] = {
 147                 .name   = "S3C2410 flash partition 7",
 148                 .offset = SZ_1M * 48,
 149                 .size   = SZ_16M,
 150         }
 151 };
 152
 153 static struct s3c2410_nand_set smdk_nand_sets[] = {
 154         [0] = {
 155                 .name           = "NAND",
 156                 .nr_chips       = 1,
 157                 .nr_partitions  = ARRAY_SIZE(smdk_default_nand_part),
 158                 .partitions     = smdk_default_nand_part,
 159         },
 160 };
 161
 162 /* choose a set of timings which should suit most 512Mbit
 163  * chips and beyond.
 164 */
 165
 166 static struct s3c2410_platform_nand smdk_nand_info = {
 167         .tacls          = 20,
 168         .twrph0         = 60,
 169         .twrph1         = 20,
 170         .nr_sets        = ARRAY_SIZE(smdk_nand_sets),
 171         .sets           = smdk_nand_sets,
 172 };
 173
 174 /* devices we initialise */
 175
 176 static struct platform_device __initdata *smdk_devs[] = {
 177         &s3c_device_nand,
 178         &smdk_led4,
 179         &smdk_led5,
 180         &smdk_led6,
 181         &smdk_led7,
 182 };
 183
 184 void __init smdk_machine_init(void)
 185 {
 186         /* Configure the LEDs (even if we have no LED support)*/
 187
 188         s3c2410_gpio_cfgpin(S3C2410_GPF(4), S3C2410_GPIO_OUTPUT);
 189         s3c2410_gpio_cfgpin(S3C2410_GPF(5), S3C2410_GPIO_OUTPUT);
 190         s3c2410_gpio_cfgpin(S3C2410_GPF(6), S3C2410_GPIO_OUTPUT);
 191         s3c2410_gpio_cfgpin(S3C2410_GPF(7), S3C2410_GPIO_OUTPUT);
 192
 193         s3c2410_gpio_setpin(S3C2410_GPF(4), 1);
 194         s3c2410_gpio_setpin(S3C2410_GPF(5), 1);
 195         s3c2410_gpio_setpin(S3C2410_GPF(6), 1);
 196         s3c2410_gpio_setpin(S3C2410_GPF(7), 1);
 197
 198         if (machine_is_smdk2443())
 199                 smdk_nand_info.twrph0 = 50;
 200
 201         s3c_device_nand.dev.platform_data = &smdk_nand_info;
 202
 203         platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));
 204
 205         s3c_pm_init();
 206 }