arch/arm/mach-s3c24xx/mach-osiris.c

   1 /*
   2  * Copyright (c) 2005-2008 Simtec Electronics
   3  *      http://armlinux.simtec.co.uk/
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9 */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/list.h>
  15 #include <linux/timer.h>
  16 #include <linux/init.h>
  17 #include <linux/gpio.h>
  18 #include <linux/device.h>
  19 #include <linux/syscore_ops.h>
  20 #include <linux/serial_core.h>
  21 #include <linux/serial_s3c.h>
  22 #include <linux/clk.h>
  23 #include <linux/i2c.h>
  24 #include <linux/io.h>
  25 #include <linux/platform_device.h>
  26
  27 #include <linux/i2c/tps65010.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32 #include <asm/mach/irq.h>
  33 #include <asm/irq.h>
  34
  35 #include <linux/platform_data/mtd-nand-s3c2410.h>
  36 #include <linux/platform_data/i2c-s3c2410.h>
  37
  38 #include <linux/mtd/mtd.h>
  39 #include <linux/mtd/nand.h>
  40 #include <linux/mtd/nand_ecc.h>
  41 #include <linux/mtd/partitions.h>
  42
  43 #include <plat/cpu.h>
  44 #include <plat/cpu-freq.h>
  45 #include <plat/devs.h>
  46 #include <plat/gpio-cfg.h>
  47 #include <plat/samsung-time.h>
  48
  49 #include <mach/hardware.h>
  50 #include <mach/regs-gpio.h>
  51 #include <mach/regs-lcd.h>
  52 #include <mach/gpio-samsung.h>
  53
  54 #include "common.h"
  55 #include "osiris.h"
  56 #include "regs-mem.h"
  57
  58 /* onboard perihperal map */
  59
  60 static struct map_desc osiris_iodesc[] __initdata = {
  61   /* ISA IO areas (may be over-written later) */
  62
  63   {
  64           .virtual      = (u32)S3C24XX_VA_ISA_BYTE,
  65           .pfn          = __phys_to_pfn(S3C2410_CS5),
  66           .length       = SZ_16M,
  67           .type         = MT_DEVICE,
  68   }, {
  69           .virtual      = (u32)S3C24XX_VA_ISA_WORD,
  70           .pfn          = __phys_to_pfn(S3C2410_CS5),
  71           .length       = SZ_16M,
  72           .type         = MT_DEVICE,
  73   },
  74
  75   /* CPLD control registers */
  76
  77   {
  78           .virtual      = (u32)OSIRIS_VA_CTRL0,
  79           .pfn          = __phys_to_pfn(OSIRIS_PA_CTRL0),
  80           .length       = SZ_16K,
  81           .type         = MT_DEVICE,
  82   }, {
  83           .virtual      = (u32)OSIRIS_VA_CTRL1,
  84           .pfn          = __phys_to_pfn(OSIRIS_PA_CTRL1),
  85           .length       = SZ_16K,
  86           .type         = MT_DEVICE,
  87   }, {
  88           .virtual      = (u32)OSIRIS_VA_CTRL2,
  89           .pfn          = __phys_to_pfn(OSIRIS_PA_CTRL2),
  90           .length       = SZ_16K,
  91           .type         = MT_DEVICE,
  92   }, {
  93           .virtual      = (u32)OSIRIS_VA_IDREG,
  94           .pfn          = __phys_to_pfn(OSIRIS_PA_IDREG),
  95           .length       = SZ_16K,
  96           .type         = MT_DEVICE,
  97   },
  98 };
  99
 100 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
 101 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 102 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
 103
 104 static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
 105         [0] = {
 106                 .hwport      = 0,
 107                 .flags       = 0,
 108                 .ucon        = UCON,
 109                 .ulcon       = ULCON,
 110                 .ufcon       = UFCON,
 111                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
 112         },
 113         [1] = {
 114                 .hwport      = 1,
 115                 .flags       = 0,
 116                 .ucon        = UCON,
 117                 .ulcon       = ULCON,
 118                 .ufcon       = UFCON,
 119                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
 120         },
 121         [2] = {
 122                 .hwport      = 2,
 123                 .flags       = 0,
 124                 .ucon        = UCON,
 125                 .ulcon       = ULCON,
 126                 .ufcon       = UFCON,
 127                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
 128         }
 129 };
 130
 131 /* NAND Flash on Osiris board */
 132
 133 static int external_map[]   = { 2 };
 134 static int chip0_map[]      = { 0 };
 135 static int chip1_map[]      = { 1 };
 136
 137 static struct mtd_partition __initdata osiris_default_nand_part[] = {
 138         [0] = {
 139                 .name   = "Boot Agent",
 140                 .size   = SZ_16K,
 141                 .offset = 0,
 142         },
 143         [1] = {
 144                 .name   = "/boot",
 145                 .size   = SZ_4M - SZ_16K,
 146                 .offset = SZ_16K,
 147         },
 148         [2] = {
 149                 .name   = "user1",
 150                 .offset = SZ_4M,
 151                 .size   = SZ_32M - SZ_4M,
 152         },
 153         [3] = {
 154                 .name   = "user2",
 155                 .offset = SZ_32M,
 156                 .size   = MTDPART_SIZ_FULL,
 157         }
 158 };
 159
 160 static struct mtd_partition __initdata osiris_default_nand_part_large[] = {
 161         [0] = {
 162                 .name   = "Boot Agent",
 163                 .size   = SZ_128K,
 164                 .offset = 0,
 165         },
 166         [1] = {
 167                 .name   = "/boot",
 168                 .size   = SZ_4M - SZ_128K,
 169                 .offset = SZ_128K,
 170         },
 171         [2] = {
 172                 .name   = "user1",
 173                 .offset = SZ_4M,
 174                 .size   = SZ_32M - SZ_4M,
 175         },
 176         [3] = {
 177                 .name   = "user2",
 178                 .offset = SZ_32M,
 179                 .size   = MTDPART_SIZ_FULL,
 180         }
 181 };
 182
 183 /* the Osiris has 3 selectable slots for nand-flash, the two
 184  * on-board chip areas, as well as the external slot.
 185  *
 186  * Note, there is no current hot-plug support for the External
 187  * socket.
 188 */
 189
 190 static struct s3c2410_nand_set __initdata osiris_nand_sets[] = {
 191         [1] = {
 192                 .name           = "External",
 193                 .nr_chips       = 1,
 194                 .nr_map         = external_map,
 195                 .options        = NAND_SCAN_SILENT_NODEV,
 196                 .nr_partitions  = ARRAY_SIZE(osiris_default_nand_part),
 197                 .partitions     = osiris_default_nand_part,
 198         },
 199         [0] = {
 200                 .name           = "chip0",
 201                 .nr_chips       = 1,
 202                 .nr_map         = chip0_map,
 203                 .nr_partitions  = ARRAY_SIZE(osiris_default_nand_part),
 204                 .partitions     = osiris_default_nand_part,
 205         },
 206         [2] = {
 207                 .name           = "chip1",
 208                 .nr_chips       = 1,
 209                 .nr_map         = chip1_map,
 210                 .options        = NAND_SCAN_SILENT_NODEV,
 211                 .nr_partitions  = ARRAY_SIZE(osiris_default_nand_part),
 212                 .partitions     = osiris_default_nand_part,
 213         },
 214 };
 215
 216 static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
 217 {
 218         unsigned int tmp;
 219
 220         slot = set->nr_map[slot] & 3;
 221
 222         pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
 223                  slot, set, set->nr_map);
 224
 225         tmp = __raw_readb(OSIRIS_VA_CTRL0);
 226         tmp &= ~OSIRIS_CTRL0_NANDSEL;
 227         tmp |= slot;
 228
 229         pr_debug("osiris_nand: ctrl0 now %02x\n", tmp);
 230
 231         __raw_writeb(tmp, OSIRIS_VA_CTRL0);
 232 }
 233
 234 static struct s3c2410_platform_nand __initdata osiris_nand_info = {
 235         .tacls          = 25,
 236         .twrph0         = 60,
 237         .twrph1         = 60,
 238         .nr_sets        = ARRAY_SIZE(osiris_nand_sets),
 239         .sets           = osiris_nand_sets,
 240         .select_chip    = osiris_nand_select,
 241         .ecc_mode       = NAND_ECC_SOFT,
 242 };
 243
 244 /* PCMCIA control and configuration */
 245
 246 static struct resource osiris_pcmcia_resource[] = {
 247         [0] = DEFINE_RES_MEM(0x0f000000, SZ_1M),
 248         [1] = DEFINE_RES_MEM(0x0c000000, SZ_1M),
 249 };
 250
 251 static struct platform_device osiris_pcmcia = {
 252         .name           = "osiris-pcmcia",
 253         .id             = -1,
 254         .num_resources  = ARRAY_SIZE(osiris_pcmcia_resource),
 255         .resource       = osiris_pcmcia_resource,
 256 };
 257
 258 /* Osiris power management device */
 259
 260 #ifdef CONFIG_PM
 261 static unsigned char pm_osiris_ctrl0;
 262
 263 static int osiris_pm_suspend(void)
 264 {
 265         unsigned int tmp;
 266
 267         pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
 268         tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
 269
 270         /* ensure correct NAND slot is selected on resume */
 271         if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
 272                 tmp |= 2;
 273
 274         __raw_writeb(tmp, OSIRIS_VA_CTRL0);
 275
 276         /* ensure that an nRESET is not generated on resume. */
 277         gpio_request_one(S3C2410_GPA(21), GPIOF_OUT_INIT_HIGH, NULL);
 278         gpio_free(S3C2410_GPA(21));
 279
 280         return 0;
 281 }
 282
 283 static void osiris_pm_resume(void)
 284 {
 285         if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
 286                 __raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
 287
 288         __raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
 289
 290         s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
 291 }
 292
 293 #else
 294 #define osiris_pm_suspend NULL
 295 #define osiris_pm_resume NULL
 296 #endif
 297
 298 static struct syscore_ops osiris_pm_syscore_ops = {
 299         .suspend        = osiris_pm_suspend,
 300         .resume         = osiris_pm_resume,
 301 };
 302
 303 /* Link for DVS driver to TPS65011 */
 304
 305 static void osiris_tps_release(struct device *dev)
 306 {
 307         /* static device, do not need to release anything */
 308 }
 309
 310 static struct platform_device osiris_tps_device = {
 311         .name   = "osiris-dvs",
 312         .id     = -1,
 313         .dev.release = osiris_tps_release,
 314 };
 315
 316 static int osiris_tps_setup(struct i2c_client *client, void *context)
 317 {
 318         osiris_tps_device.dev.parent = &client->dev;
 319         return platform_device_register(&osiris_tps_device);
 320 }
 321
 322 static int osiris_tps_remove(struct i2c_client *client, void *context)
 323 {
 324         platform_device_unregister(&osiris_tps_device);
 325         return 0;
 326 }
 327
 328 static struct tps65010_board osiris_tps_board = {
 329         .base           = -1,   /* GPIO can go anywhere at the moment */
 330         .setup          = osiris_tps_setup,
 331         .teardown       = osiris_tps_remove,
 332 };
 333
 334 /* I2C devices fitted. */
 335
 336 static struct i2c_board_info osiris_i2c_devs[] __initdata = {
 337         {
 338                 I2C_BOARD_INFO("tps65011", 0x48),
 339                 .irq    = IRQ_EINT20,
 340                 .platform_data = &osiris_tps_board,
 341         },
 342 };
 343
 344 /* Standard Osiris devices */
 345
 346 static struct platform_device *osiris_devices[] __initdata = {
 347         &s3c2410_device_dclk,
 348         &s3c_device_i2c0,
 349         &s3c_device_wdt,
 350         &s3c_device_nand,
 351         &osiris_pcmcia,
 352 };
 353
 354 static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
 355         .refresh        = 7800, /* refresh period is 7.8usec */
 356         .auto_io        = 1,
 357         .need_io        = 1,
 358 };
 359
 360 static void __init osiris_map_io(void)
 361 {
 362         unsigned long flags;
 363
 364         s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
 365         s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
 366         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 367
 368         /* check for the newer revision boards with large page nand */
 369
 370         if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
 371                 printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
 372                        __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
 373                 osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
 374                 osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
 375         } else {
 376                 /* write-protect line to the NAND */
 377                 gpio_request_one(S3C2410_GPA(0), GPIOF_OUT_INIT_HIGH, NULL);
 378                 gpio_free(S3C2410_GPA(0));
 379         }
 380
 381         /* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
 382
 383         local_irq_save(flags);
 384         __raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
 385         local_irq_restore(flags);
 386 }
 387
 388 static void __init osiris_init_time(void)
 389 {
 390         s3c2440_init_clocks(12000000);
 391         samsung_timer_init();
 392 }
 393
 394 static void __init osiris_init(void)
 395 {
 396         register_syscore_ops(&osiris_pm_syscore_ops);
 397
 398         s3c_i2c0_set_platdata(NULL);
 399         s3c_nand_set_platdata(&osiris_nand_info);
 400
 401         s3c_cpufreq_setboard(&osiris_cpufreq);
 402
 403         i2c_register_board_info(0, osiris_i2c_devs,
 404                                 ARRAY_SIZE(osiris_i2c_devs));
 405
 406         platform_add_devices(osiris_devices, ARRAY_SIZE(osiris_devices));
 407 };
 408
 409 MACHINE_START(OSIRIS, "Simtec-OSIRIS")
 410         /* Maintainer: Ben Dooks <ben@simtec.co.uk> */
 411         .atag_offset    = 0x100,
 412         .map_io         = osiris_map_io,
 413         .init_irq       = s3c2440_init_irq,
 414         .init_machine   = osiris_init,
 415         .init_time      = osiris_init_time,
 416 MACHINE_END