linux/arch/arm/mach-s3c24xx/mach-bast.c
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   1/* linux/arch/arm/mach-s3c2410/mach-bast.c
   2 *
   3 * Copyright 2003-2008 Simtec Electronics
   4 *   Ben Dooks <ben@simtec.co.uk>
   5 *
   6 * http://www.simtec.co.uk/products/EB2410ITX/
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11*/
  12
  13#include <linux/kernel.h>
  14#include <linux/types.h>
  15#include <linux/interrupt.h>
  16#include <linux/list.h>
  17#include <linux/timer.h>
  18#include <linux/init.h>
  19#include <linux/gpio.h>
  20#include <linux/syscore_ops.h>
  21#include <linux/serial_core.h>
  22#include <linux/serial_s3c.h>
  23#include <linux/platform_device.h>
  24#include <linux/dm9000.h>
  25#include <linux/ata_platform.h>
  26#include <linux/i2c.h>
  27#include <linux/io.h>
  28#include <linux/serial_8250.h>
  29
  30#include <linux/mtd/mtd.h>
  31#include <linux/mtd/nand.h>
  32#include <linux/mtd/nand_ecc.h>
  33#include <linux/mtd/partitions.h>
  34
  35#include <linux/platform_data/asoc-s3c24xx_simtec.h>
  36#include <linux/platform_data/hwmon-s3c.h>
  37#include <linux/platform_data/i2c-s3c2410.h>
  38#include <linux/platform_data/mtd-nand-s3c2410.h>
  39
  40#include <net/ax88796.h>
  41
  42#include <asm/irq.h>
  43#include <asm/mach/arch.h>
  44#include <asm/mach/map.h>
  45#include <asm/mach/irq.h>
  46#include <asm/mach-types.h>
  47
  48#include <mach/fb.h>
  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 <plat/cpu.h>
  55#include <plat/cpu-freq.h>
  56#include <plat/devs.h>
  57#include <plat/gpio-cfg.h>
  58#include <plat/samsung-time.h>
  59
  60#include "bast.h"
  61#include "common.h"
  62#include "simtec.h"
  63
  64#define COPYRIGHT ", Copyright 2004-2008 Simtec Electronics"
  65
  66/* macros for virtual address mods for the io space entries */
  67#define VA_C5(item) ((unsigned long)(item) + BAST_VAM_CS5)
  68#define VA_C4(item) ((unsigned long)(item) + BAST_VAM_CS4)
  69#define VA_C3(item) ((unsigned long)(item) + BAST_VAM_CS3)
  70#define VA_C2(item) ((unsigned long)(item) + BAST_VAM_CS2)
  71
  72/* macros to modify the physical addresses for io space */
  73
  74#define PA_CS2(item) (__phys_to_pfn((item) + S3C2410_CS2))
  75#define PA_CS3(item) (__phys_to_pfn((item) + S3C2410_CS3))
  76#define PA_CS4(item) (__phys_to_pfn((item) + S3C2410_CS4))
  77#define PA_CS5(item) (__phys_to_pfn((item) + S3C2410_CS5))
  78
  79static struct map_desc bast_iodesc[] __initdata = {
  80  /* ISA IO areas */
  81  {
  82          .virtual      = (u32)S3C24XX_VA_ISA_BYTE,
  83          .pfn          = PA_CS2(BAST_PA_ISAIO),
  84          .length       = SZ_16M,
  85          .type         = MT_DEVICE,
  86  }, {
  87          .virtual      = (u32)S3C24XX_VA_ISA_WORD,
  88          .pfn          = PA_CS3(BAST_PA_ISAIO),
  89          .length       = SZ_16M,
  90          .type         = MT_DEVICE,
  91  },
  92  /* bast CPLD control registers, and external interrupt controls */
  93  {
  94          .virtual      = (u32)BAST_VA_CTRL1,
  95          .pfn          = __phys_to_pfn(BAST_PA_CTRL1),
  96          .length       = SZ_1M,
  97          .type         = MT_DEVICE,
  98  }, {
  99          .virtual      = (u32)BAST_VA_CTRL2,
 100          .pfn          = __phys_to_pfn(BAST_PA_CTRL2),
 101          .length       = SZ_1M,
 102          .type         = MT_DEVICE,
 103  }, {
 104          .virtual      = (u32)BAST_VA_CTRL3,
 105          .pfn          = __phys_to_pfn(BAST_PA_CTRL3),
 106          .length       = SZ_1M,
 107          .type         = MT_DEVICE,
 108  }, {
 109          .virtual      = (u32)BAST_VA_CTRL4,
 110          .pfn          = __phys_to_pfn(BAST_PA_CTRL4),
 111          .length       = SZ_1M,
 112          .type         = MT_DEVICE,
 113  },
 114  /* PC104 IRQ mux */
 115  {
 116          .virtual      = (u32)BAST_VA_PC104_IRQREQ,
 117          .pfn          = __phys_to_pfn(BAST_PA_PC104_IRQREQ),
 118          .length       = SZ_1M,
 119          .type         = MT_DEVICE,
 120  }, {
 121          .virtual      = (u32)BAST_VA_PC104_IRQRAW,
 122          .pfn          = __phys_to_pfn(BAST_PA_PC104_IRQRAW),
 123          .length       = SZ_1M,
 124          .type         = MT_DEVICE,
 125  }, {
 126          .virtual      = (u32)BAST_VA_PC104_IRQMASK,
 127          .pfn          = __phys_to_pfn(BAST_PA_PC104_IRQMASK),
 128          .length       = SZ_1M,
 129          .type         = MT_DEVICE,
 130  },
 131
 132  /* peripheral space... one for each of fast/slow/byte/16bit */
 133  /* note, ide is only decoded in word space, even though some registers
 134   * are only 8bit */
 135
 136  /* slow, byte */
 137  { VA_C2(BAST_VA_ISAIO),   PA_CS2(BAST_PA_ISAIO),    SZ_16M, MT_DEVICE },
 138  { VA_C2(BAST_VA_ISAMEM),  PA_CS2(BAST_PA_ISAMEM),   SZ_16M, MT_DEVICE },
 139  { VA_C2(BAST_VA_SUPERIO), PA_CS2(BAST_PA_SUPERIO),  SZ_1M,  MT_DEVICE },
 140
 141  /* slow, word */
 142  { VA_C3(BAST_VA_ISAIO),   PA_CS3(BAST_PA_ISAIO),    SZ_16M, MT_DEVICE },
 143  { VA_C3(BAST_VA_ISAMEM),  PA_CS3(BAST_PA_ISAMEM),   SZ_16M, MT_DEVICE },
 144  { VA_C3(BAST_VA_SUPERIO), PA_CS3(BAST_PA_SUPERIO),  SZ_1M,  MT_DEVICE },
 145
 146  /* fast, byte */
 147  { VA_C4(BAST_VA_ISAIO),   PA_CS4(BAST_PA_ISAIO),    SZ_16M, MT_DEVICE },
 148  { VA_C4(BAST_VA_ISAMEM),  PA_CS4(BAST_PA_ISAMEM),   SZ_16M, MT_DEVICE },
 149  { VA_C4(BAST_VA_SUPERIO), PA_CS4(BAST_PA_SUPERIO),  SZ_1M,  MT_DEVICE },
 150
 151  /* fast, word */
 152  { VA_C5(BAST_VA_ISAIO),   PA_CS5(BAST_PA_ISAIO),    SZ_16M, MT_DEVICE },
 153  { VA_C5(BAST_VA_ISAMEM),  PA_CS5(BAST_PA_ISAMEM),   SZ_16M, MT_DEVICE },
 154  { VA_C5(BAST_VA_SUPERIO), PA_CS5(BAST_PA_SUPERIO),  SZ_1M,  MT_DEVICE },
 155};
 156
 157#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
 158#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 159#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
 160
 161static struct s3c2410_uartcfg bast_uartcfgs[] __initdata = {
 162        [0] = {
 163                .hwport      = 0,
 164                .flags       = 0,
 165                .ucon        = UCON,
 166                .ulcon       = ULCON,
 167                .ufcon       = UFCON,
 168        },
 169        [1] = {
 170                .hwport      = 1,
 171                .flags       = 0,
 172                .ucon        = UCON,
 173                .ulcon       = ULCON,
 174                .ufcon       = UFCON,
 175        },
 176        /* port 2 is not actually used */
 177        [2] = {
 178                .hwport      = 2,
 179                .flags       = 0,
 180                .ucon        = UCON,
 181                .ulcon       = ULCON,
 182                .ufcon       = UFCON,
 183        }
 184};
 185
 186/* NAND Flash on BAST board */
 187
 188#ifdef CONFIG_PM
 189static int bast_pm_suspend(void)
 190{
 191        /* ensure that an nRESET is not generated on resume. */
 192        gpio_direction_output(S3C2410_GPA(21), 1);
 193        return 0;
 194}
 195
 196static void bast_pm_resume(void)
 197{
 198        s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
 199}
 200
 201#else
 202#define bast_pm_suspend NULL
 203#define bast_pm_resume NULL
 204#endif
 205
 206static struct syscore_ops bast_pm_syscore_ops = {
 207        .suspend        = bast_pm_suspend,
 208        .resume         = bast_pm_resume,
 209};
 210
 211static int smartmedia_map[] = { 0 };
 212static int chip0_map[] = { 1 };
 213static int chip1_map[] = { 2 };
 214static int chip2_map[] = { 3 };
 215
 216static struct mtd_partition __initdata bast_default_nand_part[] = {
 217        [0] = {
 218                .name   = "Boot Agent",
 219                .size   = SZ_16K,
 220                .offset = 0,
 221        },
 222        [1] = {
 223                .name   = "/boot",
 224                .size   = SZ_4M - SZ_16K,
 225                .offset = SZ_16K,
 226        },
 227        [2] = {
 228                .name   = "user",
 229                .offset = SZ_4M,
 230                .size   = MTDPART_SIZ_FULL,
 231        }
 232};
 233
 234/* the bast has 4 selectable slots for nand-flash, the three
 235 * on-board chip areas, as well as the external SmartMedia
 236 * slot.
 237 *
 238 * Note, there is no current hot-plug support for the SmartMedia
 239 * socket.
 240*/
 241
 242static struct s3c2410_nand_set __initdata bast_nand_sets[] = {
 243        [0] = {
 244                .name           = "SmartMedia",
 245                .nr_chips       = 1,
 246                .nr_map         = smartmedia_map,
 247                .options        = NAND_SCAN_SILENT_NODEV,
 248                .nr_partitions  = ARRAY_SIZE(bast_default_nand_part),
 249                .partitions     = bast_default_nand_part,
 250        },
 251        [1] = {
 252                .name           = "chip0",
 253                .nr_chips       = 1,
 254                .nr_map         = chip0_map,
 255                .nr_partitions  = ARRAY_SIZE(bast_default_nand_part),
 256                .partitions     = bast_default_nand_part,
 257        },
 258        [2] = {
 259                .name           = "chip1",
 260                .nr_chips       = 1,
 261                .nr_map         = chip1_map,
 262                .options        = NAND_SCAN_SILENT_NODEV,
 263                .nr_partitions  = ARRAY_SIZE(bast_default_nand_part),
 264                .partitions     = bast_default_nand_part,
 265        },
 266        [3] = {
 267                .name           = "chip2",
 268                .nr_chips       = 1,
 269                .nr_map         = chip2_map,
 270                .options        = NAND_SCAN_SILENT_NODEV,
 271                .nr_partitions  = ARRAY_SIZE(bast_default_nand_part),
 272                .partitions     = bast_default_nand_part,
 273        }
 274};
 275
 276static void bast_nand_select(struct s3c2410_nand_set *set, int slot)
 277{
 278        unsigned int tmp;
 279
 280        slot = set->nr_map[slot] & 3;
 281
 282        pr_debug("bast_nand: selecting slot %d (set %p,%p)\n",
 283                 slot, set, set->nr_map);
 284
 285        tmp = __raw_readb(BAST_VA_CTRL2);
 286        tmp &= BAST_CPLD_CTLR2_IDERST;
 287        tmp |= slot;
 288        tmp |= BAST_CPLD_CTRL2_WNAND;
 289
 290        pr_debug("bast_nand: ctrl2 now %02x\n", tmp);
 291
 292        __raw_writeb(tmp, BAST_VA_CTRL2);
 293}
 294
 295static struct s3c2410_platform_nand __initdata bast_nand_info = {
 296        .tacls          = 30,
 297        .twrph0         = 60,
 298        .twrph1         = 60,
 299        .nr_sets        = ARRAY_SIZE(bast_nand_sets),
 300        .sets           = bast_nand_sets,
 301        .select_chip    = bast_nand_select,
 302        .ecc_mode       = NAND_ECC_SOFT,
 303};
 304
 305/* DM9000 */
 306
 307static struct resource bast_dm9k_resource[] = {
 308        [0] = DEFINE_RES_MEM(S3C2410_CS5 + BAST_PA_DM9000, 4),
 309        [1] = DEFINE_RES_MEM(S3C2410_CS5 + BAST_PA_DM9000 + 0x40, 0x40),
 310        [2] = DEFINE_RES_NAMED(BAST_IRQ_DM9000 , 1, NULL, IORESOURCE_IRQ \
 311                                        | IORESOURCE_IRQ_HIGHLEVEL),
 312};
 313
 314/* for the moment we limit ourselves to 16bit IO until some
 315 * better IO routines can be written and tested
 316*/
 317
 318static struct dm9000_plat_data bast_dm9k_platdata = {
 319        .flags          = DM9000_PLATF_16BITONLY,
 320};
 321
 322static struct platform_device bast_device_dm9k = {
 323        .name           = "dm9000",
 324        .id             = 0,
 325        .num_resources  = ARRAY_SIZE(bast_dm9k_resource),
 326        .resource       = bast_dm9k_resource,
 327        .dev            = {
 328                .platform_data = &bast_dm9k_platdata,
 329        }
 330};
 331
 332/* serial devices */
 333
 334#define SERIAL_BASE  (S3C2410_CS2 + BAST_PA_SUPERIO)
 335#define SERIAL_FLAGS (UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SHARE_IRQ)
 336#define SERIAL_CLK   (1843200)
 337
 338static struct plat_serial8250_port bast_sio_data[] = {
 339        [0] = {
 340                .mapbase        = SERIAL_BASE + 0x2f8,
 341                .irq            = BAST_IRQ_PCSERIAL1,
 342                .flags          = SERIAL_FLAGS,
 343                .iotype         = UPIO_MEM,
 344                .regshift       = 0,
 345                .uartclk        = SERIAL_CLK,
 346        },
 347        [1] = {
 348                .mapbase        = SERIAL_BASE + 0x3f8,
 349                .irq            = BAST_IRQ_PCSERIAL2,
 350                .flags          = SERIAL_FLAGS,
 351                .iotype         = UPIO_MEM,
 352                .regshift       = 0,
 353                .uartclk        = SERIAL_CLK,
 354        },
 355        { }
 356};
 357
 358static struct platform_device bast_sio = {
 359        .name                   = "serial8250",
 360        .id                     = PLAT8250_DEV_PLATFORM,
 361        .dev                    = {
 362                .platform_data  = &bast_sio_data,
 363        },
 364};
 365
 366/* we have devices on the bus which cannot work much over the
 367 * standard 100KHz i2c bus frequency
 368*/
 369
 370static struct s3c2410_platform_i2c __initdata bast_i2c_info = {
 371        .flags          = 0,
 372        .slave_addr     = 0x10,
 373        .frequency      = 100*1000,
 374};
 375
 376/* Asix AX88796 10/100 ethernet controller */
 377
 378static struct ax_plat_data bast_asix_platdata = {
 379        .flags          = AXFLG_MAC_FROMDEV,
 380        .wordlength     = 2,
 381        .dcr_val        = 0x48,
 382        .rcr_val        = 0x40,
 383};
 384
 385static struct resource bast_asix_resource[] = {
 386        [0] = DEFINE_RES_MEM(S3C2410_CS5 + BAST_PA_ASIXNET, 0x18 * 0x20),
 387        [1] = DEFINE_RES_MEM(S3C2410_CS5 + BAST_PA_ASIXNET + (0x1f * 0x20), 1),
 388        [2] = DEFINE_RES_IRQ(BAST_IRQ_ASIX),
 389};
 390
 391static struct platform_device bast_device_asix = {
 392        .name           = "ax88796",
 393        .id             = 0,
 394        .num_resources  = ARRAY_SIZE(bast_asix_resource),
 395        .resource       = bast_asix_resource,
 396        .dev            = {
 397                .platform_data = &bast_asix_platdata
 398        }
 399};
 400
 401/* Asix AX88796 10/100 ethernet controller parallel port */
 402
 403static struct resource bast_asixpp_resource[] = {
 404        [0] = DEFINE_RES_MEM(S3C2410_CS5 + BAST_PA_ASIXNET + (0x18 * 0x20), \
 405                                        0x30 * 0x20),
 406};
 407
 408static struct platform_device bast_device_axpp = {
 409        .name           = "ax88796-pp",
 410        .id             = 0,
 411        .num_resources  = ARRAY_SIZE(bast_asixpp_resource),
 412        .resource       = bast_asixpp_resource,
 413};
 414
 415/* LCD/VGA controller */
 416
 417static struct s3c2410fb_display __initdata bast_lcd_info[] = {
 418        {
 419                .type           = S3C2410_LCDCON1_TFT,
 420                .width          = 640,
 421                .height         = 480,
 422
 423                .pixclock       = 33333,
 424                .xres           = 640,
 425                .yres           = 480,
 426                .bpp            = 4,
 427                .left_margin    = 40,
 428                .right_margin   = 20,
 429                .hsync_len      = 88,
 430                .upper_margin   = 30,
 431                .lower_margin   = 32,
 432                .vsync_len      = 3,
 433
 434                .lcdcon5        = 0x00014b02,
 435        },
 436        {
 437                .type           = S3C2410_LCDCON1_TFT,
 438                .width          = 640,
 439                .height         = 480,
 440
 441                .pixclock       = 33333,
 442                .xres           = 640,
 443                .yres           = 480,
 444                .bpp            = 8,
 445                .left_margin    = 40,
 446                .right_margin   = 20,
 447                .hsync_len      = 88,
 448                .upper_margin   = 30,
 449                .lower_margin   = 32,
 450                .vsync_len      = 3,
 451
 452                .lcdcon5        = 0x00014b02,
 453        },
 454        {
 455                .type           = S3C2410_LCDCON1_TFT,
 456                .width          = 640,
 457                .height         = 480,
 458
 459                .pixclock       = 33333,
 460                .xres           = 640,
 461                .yres           = 480,
 462                .bpp            = 16,
 463                .left_margin    = 40,
 464                .right_margin   = 20,
 465                .hsync_len      = 88,
 466                .upper_margin   = 30,
 467                .lower_margin   = 32,
 468                .vsync_len      = 3,
 469
 470                .lcdcon5        = 0x00014b02,
 471        },
 472};
 473
 474/* LCD/VGA controller */
 475
 476static struct s3c2410fb_mach_info __initdata bast_fb_info = {
 477
 478        .displays = bast_lcd_info,
 479        .num_displays = ARRAY_SIZE(bast_lcd_info),
 480        .default_display = 1,
 481};
 482
 483/* I2C devices fitted. */
 484
 485static struct i2c_board_info bast_i2c_devs[] __initdata = {
 486        {
 487                I2C_BOARD_INFO("tlv320aic23", 0x1a),
 488        }, {
 489                I2C_BOARD_INFO("simtec-pmu", 0x6b),
 490        }, {
 491                I2C_BOARD_INFO("ch7013", 0x75),
 492        },
 493};
 494
 495static struct s3c_hwmon_pdata bast_hwmon_info = {
 496        /* LCD contrast (0-6.6V) */
 497        .in[0] = &(struct s3c_hwmon_chcfg) {
 498                .name           = "lcd-contrast",
 499                .mult           = 3300,
 500                .div            = 512,
 501        },
 502        /* LED current feedback */
 503        .in[1] = &(struct s3c_hwmon_chcfg) {
 504                .name           = "led-feedback",
 505                .mult           = 3300,
 506                .div            = 1024,
 507        },
 508        /* LCD feedback (0-6.6V) */
 509        .in[2] = &(struct s3c_hwmon_chcfg) {
 510                .name           = "lcd-feedback",
 511                .mult           = 3300,
 512                .div            = 512,
 513        },
 514        /* Vcore (1.8-2.0V), Vref 3.3V  */
 515        .in[3] = &(struct s3c_hwmon_chcfg) {
 516                .name           = "vcore",
 517                .mult           = 3300,
 518                .div            = 1024,
 519        },
 520};
 521
 522/* Standard BAST devices */
 523// cat /sys/devices/platform/s3c24xx-adc/s3c-hwmon/in_0
 524
 525static struct platform_device *bast_devices[] __initdata = {
 526        &s3c2410_device_dclk,
 527        &s3c_device_ohci,
 528        &s3c_device_lcd,
 529        &s3c_device_wdt,
 530        &s3c_device_i2c0,
 531        &s3c_device_rtc,
 532        &s3c_device_nand,
 533        &s3c_device_adc,
 534        &s3c_device_hwmon,
 535        &bast_device_dm9k,
 536        &bast_device_asix,
 537        &bast_device_axpp,
 538        &bast_sio,
 539};
 540
 541static struct s3c_cpufreq_board __initdata bast_cpufreq = {
 542        .refresh        = 7800, /* 7.8usec */
 543        .auto_io        = 1,
 544        .need_io        = 1,
 545};
 546
 547static struct s3c24xx_audio_simtec_pdata __initdata bast_audio = {
 548        .have_mic       = 1,
 549        .have_lout      = 1,
 550};
 551
 552static void __init bast_map_io(void)
 553{
 554        s3c_hwmon_set_platdata(&bast_hwmon_info);
 555
 556        s3c24xx_init_io(bast_iodesc, ARRAY_SIZE(bast_iodesc));
 557        s3c24xx_init_uarts(bast_uartcfgs, ARRAY_SIZE(bast_uartcfgs));
 558        samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 559}
 560
 561static void __init bast_init_time(void)
 562{
 563        s3c2410_init_clocks(12000000);
 564        samsung_timer_init();
 565}
 566
 567static void __init bast_init(void)
 568{
 569        register_syscore_ops(&bast_pm_syscore_ops);
 570
 571        s3c_i2c0_set_platdata(&bast_i2c_info);
 572        s3c_nand_set_platdata(&bast_nand_info);
 573        s3c24xx_fb_set_platdata(&bast_fb_info);
 574        platform_add_devices(bast_devices, ARRAY_SIZE(bast_devices));
 575
 576        i2c_register_board_info(0, bast_i2c_devs,
 577                                ARRAY_SIZE(bast_i2c_devs));
 578
 579        usb_simtec_init();
 580        nor_simtec_init();
 581        simtec_audio_add(NULL, true, &bast_audio);
 582
 583        WARN_ON(gpio_request(S3C2410_GPA(21), "bast nreset"));
 584        
 585        s3c_cpufreq_setboard(&bast_cpufreq);
 586}
 587
 588MACHINE_START(BAST, "Simtec-BAST")
 589        /* Maintainer: Ben Dooks <ben@simtec.co.uk> */
 590        .atag_offset    = 0x100,
 591        .map_io         = bast_map_io,
 592        .init_irq       = s3c2410_init_irq,
 593        .init_machine   = bast_init,
 594        .init_time      = bast_init_time,
 595MACHINE_END
 596