arch/arm/mach-s3c/mach-osiris.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2005-2008 Simtec Electronics
   4 //      http://armlinux.simtec.co.uk/
   5 //      Ben Dooks <[email protected]>
   6
   7 #include <linux/kernel.h>
   8 #include <linux/types.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/list.h>
  11 #include <linux/timer.h>
  12 #include <linux/init.h>
  13 #include <linux/gpio.h>
  14 #include <linux/device.h>
  15 #include <linux/syscore_ops.h>
  16 #include <linux/serial_core.h>
  17 #include <linux/serial_s3c.h>
  18 #include <linux/clk.h>
  19 #include <linux/i2c.h>
  20 #include <linux/io.h>
  21 #include <linux/platform_device.h>
  22
  23 #include <linux/mfd/tps65010.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/map.h>
  28 #include <asm/mach/irq.h>
  29 #include <asm/irq.h>
  30
  31 #include <linux/platform_data/mtd-nand-s3c2410.h>
  32 #include <linux/platform_data/i2c-s3c2410.h>
  33
  34 #include <linux/mtd/mtd.h>
  35 #include <linux/mtd/rawnand.h>
  36 #include <linux/mtd/nand-ecc-sw-hamming.h>
  37 #include <linux/mtd/partitions.h>
  38
  39 #include "cpu.h"
  40 #include <linux/soc/samsung/s3c-cpu-freq.h>
  41 #include "devs.h"
  42 #include "gpio-cfg.h"
  43
  44 #include "regs-gpio.h"
  45 #include "gpio-samsung.h"
  46
  47 #include "s3c24xx.h"
  48 #include "osiris.h"
  49 #include "regs-mem-s3c24xx.h"
  50
  51 /* onboard perihperal map */
  52
  53 static struct map_desc osiris_iodesc[] __initdata = {
  54   /* ISA IO areas (may be over-written later) */
  55
  56   {
  57           .virtual      = (u32)S3C24XX_VA_ISA_BYTE,
  58           .pfn          = __phys_to_pfn(S3C2410_CS5),
  59           .length       = SZ_16M,
  60           .type         = MT_DEVICE,
  61   }, {
  62           .virtual      = (u32)S3C24XX_VA_ISA_WORD,
  63           .pfn          = __phys_to_pfn(S3C2410_CS5),
  64           .length       = SZ_16M,
  65           .type         = MT_DEVICE,
  66   },
  67
  68   /* CPLD control registers */
  69
  70   {
  71           .virtual      = (u32)OSIRIS_VA_CTRL0,
  72           .pfn          = __phys_to_pfn(OSIRIS_PA_CTRL0),
  73           .length       = SZ_16K,
  74           .type         = MT_DEVICE,
  75   }, {
  76           .virtual      = (u32)OSIRIS_VA_CTRL1,
  77           .pfn          = __phys_to_pfn(OSIRIS_PA_CTRL1),
  78           .length       = SZ_16K,
  79           .type         = MT_DEVICE,
  80   }, {
  81           .virtual      = (u32)OSIRIS_VA_CTRL2,
  82           .pfn          = __phys_to_pfn(OSIRIS_PA_CTRL2),
  83           .length       = SZ_16K,
  84           .type         = MT_DEVICE,
  85   }, {
  86           .virtual      = (u32)OSIRIS_VA_IDREG,
  87           .pfn          = __phys_to_pfn(OSIRIS_PA_IDREG),
  88           .length       = SZ_16K,
  89           .type         = MT_DEVICE,
  90   },
  91 };
  92
  93 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  94 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  95 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  96
  97 static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
  98         [0] = {
  99                 .hwport      = 0,
 100                 .flags       = 0,
 101                 .ucon        = UCON,
 102                 .ulcon       = ULCON,
 103                 .ufcon       = UFCON,
 104                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
 105         },
 106         [1] = {
 107                 .hwport      = 1,
 108                 .flags       = 0,
 109                 .ucon        = UCON,
 110                 .ulcon       = ULCON,
 111                 .ufcon       = UFCON,
 112                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
 113         },
 114         [2] = {
 115                 .hwport      = 2,
 116                 .flags       = 0,
 117                 .ucon        = UCON,
 118                 .ulcon       = ULCON,
 119                 .ufcon       = UFCON,
 120                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
 121         }
 122 };
 123
 124 /* NAND Flash on Osiris board */
 125
 126 static int external_map[]   = { 2 };
 127 static int chip0_map[]      = { 0 };
 128 static int chip1_map[]      = { 1 };
 129
 130 static struct mtd_partition __initdata osiris_default_nand_part[] = {
 131         [0] = {
 132                 .name   = "Boot Agent",
 133                 .size   = SZ_16K,
 134                 .offset = 0,
 135         },
 136         [1] = {
 137                 .name   = "/boot",
 138                 .size   = SZ_4M - SZ_16K,
 139                 .offset = SZ_16K,
 140         },
 141         [2] = {
 142                 .name   = "user1",
 143                 .offset = SZ_4M,
 144                 .size   = SZ_32M - SZ_4M,
 145         },
 146         [3] = {
 147                 .name   = "user2",
 148                 .offset = SZ_32M,
 149                 .size   = MTDPART_SIZ_FULL,
 150         }
 151 };
 152
 153 static struct mtd_partition __initdata osiris_default_nand_part_large[] = {
 154         [0] = {
 155                 .name   = "Boot Agent",
 156                 .size   = SZ_128K,
 157                 .offset = 0,
 158         },
 159         [1] = {
 160                 .name   = "/boot",
 161                 .size   = SZ_4M - SZ_128K,
 162                 .offset = SZ_128K,
 163         },
 164         [2] = {
 165                 .name   = "user1",
 166                 .offset = SZ_4M,
 167                 .size   = SZ_32M - SZ_4M,
 168         },
 169         [3] = {
 170                 .name   = "user2",
 171                 .offset = SZ_32M,
 172                 .size   = MTDPART_SIZ_FULL,
 173         }
 174 };
 175
 176 /* the Osiris has 3 selectable slots for nand-flash, the two
 177  * on-board chip areas, as well as the external slot.
 178  *
 179  * Note, there is no current hot-plug support for the External
 180  * socket.
 181 */
 182
 183 static struct s3c2410_nand_set __initdata osiris_nand_sets[] = {
 184         [1] = {
 185                 .name           = "External",
 186                 .nr_chips       = 1,
 187                 .nr_map         = external_map,
 188                 .options        = NAND_SCAN_SILENT_NODEV,
 189                 .nr_partitions  = ARRAY_SIZE(osiris_default_nand_part),
 190                 .partitions     = osiris_default_nand_part,
 191         },
 192         [0] = {
 193                 .name           = "chip0",
 194                 .nr_chips       = 1,
 195                 .nr_map         = chip0_map,
 196                 .nr_partitions  = ARRAY_SIZE(osiris_default_nand_part),
 197                 .partitions     = osiris_default_nand_part,
 198         },
 199         [2] = {
 200                 .name           = "chip1",
 201                 .nr_chips       = 1,
 202                 .nr_map         = chip1_map,
 203                 .options        = NAND_SCAN_SILENT_NODEV,
 204                 .nr_partitions  = ARRAY_SIZE(osiris_default_nand_part),
 205                 .partitions     = osiris_default_nand_part,
 206         },
 207 };
 208
 209 static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
 210 {
 211         unsigned int tmp;
 212
 213         slot = set->nr_map[slot] & 3;
 214
 215         pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
 216                  slot, set, set->nr_map);
 217
 218         tmp = __raw_readb(OSIRIS_VA_CTRL0);
 219         tmp &= ~OSIRIS_CTRL0_NANDSEL;
 220         tmp |= slot;
 221
 222         pr_debug("osiris_nand: ctrl0 now %02x\n", tmp);
 223
 224         __raw_writeb(tmp, OSIRIS_VA_CTRL0);
 225 }
 226
 227 static struct s3c2410_platform_nand __initdata osiris_nand_info = {
 228         .tacls          = 25,
 229         .twrph0         = 60,
 230         .twrph1         = 60,
 231         .nr_sets        = ARRAY_SIZE(osiris_nand_sets),
 232         .sets           = osiris_nand_sets,
 233         .select_chip    = osiris_nand_select,
 234         .engine_type    = NAND_ECC_ENGINE_TYPE_SOFT,
 235 };
 236
 237 /* PCMCIA control and configuration */
 238
 239 static struct resource osiris_pcmcia_resource[] = {
 240         [0] = DEFINE_RES_MEM(0x0f000000, SZ_1M),
 241         [1] = DEFINE_RES_MEM(0x0c000000, SZ_1M),
 242 };
 243
 244 static struct platform_device osiris_pcmcia = {
 245         .name           = "osiris-pcmcia",
 246         .id             = -1,
 247         .num_resources  = ARRAY_SIZE(osiris_pcmcia_resource),
 248         .resource       = osiris_pcmcia_resource,
 249 };
 250
 251 /* Osiris power management device */
 252
 253 #ifdef CONFIG_PM
 254 static unsigned char pm_osiris_ctrl0;
 255
 256 static int osiris_pm_suspend(void)
 257 {
 258         unsigned int tmp;
 259
 260         pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
 261         tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
 262
 263         /* ensure correct NAND slot is selected on resume */
 264         if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
 265                 tmp |= 2;
 266
 267         __raw_writeb(tmp, OSIRIS_VA_CTRL0);
 268
 269         /* ensure that an nRESET is not generated on resume. */
 270         gpio_request_one(S3C2410_GPA(21), GPIOF_OUT_INIT_HIGH, NULL);
 271         gpio_free(S3C2410_GPA(21));
 272
 273         return 0;
 274 }
 275
 276 static void osiris_pm_resume(void)
 277 {
 278         if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
 279                 __raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
 280
 281         __raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
 282
 283         s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
 284 }
 285
 286 #else
 287 #define osiris_pm_suspend NULL
 288 #define osiris_pm_resume NULL
 289 #endif
 290
 291 static struct syscore_ops osiris_pm_syscore_ops = {
 292         .suspend        = osiris_pm_suspend,
 293         .resume         = osiris_pm_resume,
 294 };
 295
 296 /* Link for DVS driver to TPS65011 */
 297
 298 static void osiris_tps_release(struct device *dev)
 299 {
 300         /* static device, do not need to release anything */
 301 }
 302
 303 static struct platform_device osiris_tps_device = {
 304         .name   = "osiris-dvs",
 305         .id     = -1,
 306         .dev.release = osiris_tps_release,
 307 };
 308
 309 static int osiris_tps_setup(struct i2c_client *client, void *context)
 310 {
 311         osiris_tps_device.dev.parent = &client->dev;
 312         return platform_device_register(&osiris_tps_device);
 313 }
 314
 315 static int osiris_tps_remove(struct i2c_client *client, void *context)
 316 {
 317         platform_device_unregister(&osiris_tps_device);
 318         return 0;
 319 }
 320
 321 static struct tps65010_board osiris_tps_board = {
 322         .base           = -1,   /* GPIO can go anywhere at the moment */
 323         .setup          = osiris_tps_setup,
 324         .teardown       = osiris_tps_remove,
 325 };
 326
 327 /* I2C devices fitted. */
 328
 329 static struct i2c_board_info osiris_i2c_devs[] __initdata = {
 330         {
 331                 I2C_BOARD_INFO("tps65011", 0x48),
 332                 .irq    = IRQ_EINT20,
 333                 .platform_data = &osiris_tps_board,
 334         },
 335 };
 336
 337 /* Standard Osiris devices */
 338
 339 static struct platform_device *osiris_devices[] __initdata = {
 340         &s3c2410_device_dclk,
 341         &s3c_device_i2c0,
 342         &s3c_device_wdt,
 343         &s3c_device_nand,
 344         &osiris_pcmcia,
 345 };
 346
 347 static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
 348         .refresh        = 7800, /* refresh period is 7.8usec */
 349         .auto_io        = 1,
 350         .need_io        = 1,
 351 };
 352
 353 static void __init osiris_map_io(void)
 354 {
 355         unsigned long flags;
 356
 357         s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
 358         s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
 359         s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
 360
 361         /* check for the newer revision boards with large page nand */
 362
 363         if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
 364                 printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
 365                        __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
 366                 osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
 367                 osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
 368         } else {
 369                 /* write-protect line to the NAND */
 370                 gpio_request_one(S3C2410_GPA(0), GPIOF_OUT_INIT_HIGH, NULL);
 371                 gpio_free(S3C2410_GPA(0));
 372         }
 373
 374         /* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
 375
 376         local_irq_save(flags);
 377         __raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
 378         local_irq_restore(flags);
 379 }
 380
 381 static void __init osiris_init_time(void)
 382 {
 383         s3c2440_init_clocks(12000000);
 384         s3c24xx_timer_init();
 385 }
 386
 387 static void __init osiris_init(void)
 388 {
 389         register_syscore_ops(&osiris_pm_syscore_ops);
 390
 391         s3c_i2c0_set_platdata(NULL);
 392         s3c_nand_set_platdata(&osiris_nand_info);
 393
 394         s3c_cpufreq_setboard(&osiris_cpufreq);
 395
 396         i2c_register_board_info(0, osiris_i2c_devs,
 397                                 ARRAY_SIZE(osiris_i2c_devs));
 398
 399         platform_add_devices(osiris_devices, ARRAY_SIZE(osiris_devices));
 400 };
 401
 402 MACHINE_START(OSIRIS, "Simtec-OSIRIS")
 403         /* Maintainer: Ben Dooks <[email protected]> */
 404         .atag_offset    = 0x100,
 405         .map_io         = osiris_map_io,
 406         .init_irq       = s3c2440_init_irq,
 407         .init_machine   = osiris_init,
 408         .init_time      = osiris_init_time,
 409 MACHINE_END