linux/arch/arm/mach-versatile/core.c
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   1/*
   2 *  linux/arch/arm/mach-versatile/core.c
   3 *
   4 *  Copyright (C) 1999 - 2003 ARM Limited
   5 *  Copyright (C) 2000 Deep Blue Solutions Ltd
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20 */
  21#include <linux/init.h>
  22#include <linux/device.h>
  23#include <linux/dma-mapping.h>
  24#include <linux/platform_device.h>
  25#include <linux/interrupt.h>
  26#include <linux/irqdomain.h>
  27#include <linux/of_address.h>
  28#include <linux/of_platform.h>
  29#include <linux/amba/bus.h>
  30#include <linux/amba/clcd.h>
  31#include <linux/platform_data/video-clcd-versatile.h>
  32#include <linux/amba/pl061.h>
  33#include <linux/amba/mmci.h>
  34#include <linux/amba/pl022.h>
  35#include <linux/io.h>
  36#include <linux/irqchip/arm-vic.h>
  37#include <linux/irqchip/versatile-fpga.h>
  38#include <linux/gfp.h>
  39#include <linux/clkdev.h>
  40#include <linux/mtd/physmap.h>
  41#include <linux/bitops.h>
  42#include <linux/reboot.h>
  43
  44#include <clocksource/timer-sp804.h>
  45
  46#include <asm/irq.h>
  47#include <asm/hardware/icst.h>
  48#include <asm/mach-types.h>
  49
  50#include <asm/mach/arch.h>
  51#include <asm/mach/irq.h>
  52#include <asm/mach/time.h>
  53#include <asm/mach/map.h>
  54#include <mach/hardware.h>
  55#include <mach/platform.h>
  56
  57#include <plat/sched_clock.h>
  58
  59#include "core.h"
  60
  61/*
  62 * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
  63 * is the (PA >> 12).
  64 *
  65 * Setup a VA for the Versatile Vectored Interrupt Controller.
  66 */
  67#define VA_VIC_BASE             __io_address(VERSATILE_VIC_BASE)
  68#define VA_SIC_BASE             __io_address(VERSATILE_SIC_BASE)
  69
  70/* These PIC IRQs are valid in each configuration */
  71#define PIC_VALID_ALL   BIT(SIC_INT_KMI0) | BIT(SIC_INT_KMI1) | \
  72                        BIT(SIC_INT_SCI3) | BIT(SIC_INT_UART3) | \
  73                        BIT(SIC_INT_CLCD) | BIT(SIC_INT_TOUCH) | \
  74                        BIT(SIC_INT_KEYPAD) | BIT(SIC_INT_DoC) | \
  75                        BIT(SIC_INT_USB) | BIT(SIC_INT_PCI0) | \
  76                        BIT(SIC_INT_PCI1) | BIT(SIC_INT_PCI2) | \
  77                        BIT(SIC_INT_PCI3)
  78#if 1
  79#define IRQ_MMCI0A      IRQ_VICSOURCE22
  80#define IRQ_AACI        IRQ_VICSOURCE24
  81#define IRQ_ETH         IRQ_VICSOURCE25
  82#define PIC_MASK        0xFFD00000
  83#define PIC_VALID       PIC_VALID_ALL
  84#else
  85#define IRQ_MMCI0A      IRQ_SIC_MMCI0A
  86#define IRQ_AACI        IRQ_SIC_AACI
  87#define IRQ_ETH         IRQ_SIC_ETH
  88#define PIC_MASK        0
  89#define PIC_VALID       PIC_VALID_ALL | BIT(SIC_INT_MMCI0A) | \
  90                        BIT(SIC_INT_MMCI1A) | BIT(SIC_INT_AACI) | \
  91                        BIT(SIC_INT_ETH)
  92#endif
  93
  94/* Lookup table for finding a DT node that represents the vic instance */
  95static const struct of_device_id vic_of_match[] __initconst = {
  96        { .compatible = "arm,versatile-vic", },
  97        {}
  98};
  99
 100static const struct of_device_id sic_of_match[] __initconst = {
 101        { .compatible = "arm,versatile-sic", },
 102        {}
 103};
 104
 105void __init versatile_init_irq(void)
 106{
 107        struct device_node *np;
 108
 109        np = of_find_matching_node_by_address(NULL, vic_of_match,
 110                                              VERSATILE_VIC_BASE);
 111        __vic_init(VA_VIC_BASE, 0, IRQ_VIC_START, ~0, 0, np);
 112
 113        writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
 114
 115        np = of_find_matching_node_by_address(NULL, sic_of_match,
 116                                              VERSATILE_SIC_BASE);
 117
 118        fpga_irq_init(VA_SIC_BASE, "SIC", IRQ_SIC_START,
 119                IRQ_VICSOURCE31, PIC_VALID, np);
 120
 121        /*
 122         * Interrupts on secondary controller from 0 to 8 are routed to
 123         * source 31 on PIC.
 124         * Interrupts from 21 to 31 are routed directly to the VIC on
 125         * the corresponding number on primary controller. This is controlled
 126         * by setting PIC_ENABLEx.
 127         */
 128        writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE);
 129}
 130
 131static struct map_desc versatile_io_desc[] __initdata __maybe_unused = {
 132        {
 133                .virtual        =  IO_ADDRESS(VERSATILE_SYS_BASE),
 134                .pfn            = __phys_to_pfn(VERSATILE_SYS_BASE),
 135                .length         = SZ_4K,
 136                .type           = MT_DEVICE
 137        }, {
 138                .virtual        =  IO_ADDRESS(VERSATILE_SIC_BASE),
 139                .pfn            = __phys_to_pfn(VERSATILE_SIC_BASE),
 140                .length         = SZ_4K,
 141                .type           = MT_DEVICE
 142        }, {
 143                .virtual        =  IO_ADDRESS(VERSATILE_VIC_BASE),
 144                .pfn            = __phys_to_pfn(VERSATILE_VIC_BASE),
 145                .length         = SZ_4K,
 146                .type           = MT_DEVICE
 147        }, {
 148                .virtual        =  IO_ADDRESS(VERSATILE_SCTL_BASE),
 149                .pfn            = __phys_to_pfn(VERSATILE_SCTL_BASE),
 150                .length         = SZ_4K * 9,
 151                .type           = MT_DEVICE
 152        },
 153#ifdef CONFIG_MACH_VERSATILE_AB
 154        {
 155                .virtual        =  IO_ADDRESS(VERSATILE_IB2_BASE),
 156                .pfn            = __phys_to_pfn(VERSATILE_IB2_BASE),
 157                .length         = SZ_64M,
 158                .type           = MT_DEVICE
 159        },
 160#endif
 161#ifdef CONFIG_DEBUG_LL
 162        {
 163                .virtual        =  IO_ADDRESS(VERSATILE_UART0_BASE),
 164                .pfn            = __phys_to_pfn(VERSATILE_UART0_BASE),
 165                .length         = SZ_4K,
 166                .type           = MT_DEVICE
 167        },
 168#endif
 169#ifdef CONFIG_PCI
 170        {
 171                .virtual        =  IO_ADDRESS(VERSATILE_PCI_CORE_BASE),
 172                .pfn            = __phys_to_pfn(VERSATILE_PCI_CORE_BASE),
 173                .length         = SZ_4K,
 174                .type           = MT_DEVICE
 175        }, {
 176                .virtual        =  (unsigned long)VERSATILE_PCI_VIRT_BASE,
 177                .pfn            = __phys_to_pfn(VERSATILE_PCI_BASE),
 178                .length         = VERSATILE_PCI_BASE_SIZE,
 179                .type           = MT_DEVICE
 180        }, {
 181                .virtual        =  (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE,
 182                .pfn            = __phys_to_pfn(VERSATILE_PCI_CFG_BASE),
 183                .length         = VERSATILE_PCI_CFG_BASE_SIZE,
 184                .type           = MT_DEVICE
 185        },
 186#endif
 187};
 188
 189void __init versatile_map_io(void)
 190{
 191        iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc));
 192}
 193
 194
 195#define VERSATILE_FLASHCTRL    (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
 196
 197static void versatile_flash_set_vpp(struct platform_device *pdev, int on)
 198{
 199        u32 val;
 200
 201        val = __raw_readl(VERSATILE_FLASHCTRL);
 202        if (on)
 203                val |= VERSATILE_FLASHPROG_FLVPPEN;
 204        else
 205                val &= ~VERSATILE_FLASHPROG_FLVPPEN;
 206        __raw_writel(val, VERSATILE_FLASHCTRL);
 207}
 208
 209static struct physmap_flash_data versatile_flash_data = {
 210        .width                  = 4,
 211        .set_vpp                = versatile_flash_set_vpp,
 212};
 213
 214static struct resource versatile_flash_resource = {
 215        .start                  = VERSATILE_FLASH_BASE,
 216        .end                    = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
 217        .flags                  = IORESOURCE_MEM,
 218};
 219
 220static struct platform_device versatile_flash_device = {
 221        .name                   = "physmap-flash",
 222        .id                     = 0,
 223        .dev                    = {
 224                .platform_data  = &versatile_flash_data,
 225        },
 226        .num_resources          = 1,
 227        .resource               = &versatile_flash_resource,
 228};
 229
 230static struct resource smc91x_resources[] = {
 231        [0] = {
 232                .start          = VERSATILE_ETH_BASE,
 233                .end            = VERSATILE_ETH_BASE + SZ_64K - 1,
 234                .flags          = IORESOURCE_MEM,
 235        },
 236        [1] = {
 237                .start          = IRQ_ETH,
 238                .end            = IRQ_ETH,
 239                .flags          = IORESOURCE_IRQ,
 240        },
 241};
 242
 243static struct platform_device smc91x_device = {
 244        .name           = "smc91x",
 245        .id             = 0,
 246        .num_resources  = ARRAY_SIZE(smc91x_resources),
 247        .resource       = smc91x_resources,
 248};
 249
 250static struct resource versatile_i2c_resource = {
 251        .start                  = VERSATILE_I2C_BASE,
 252        .end                    = VERSATILE_I2C_BASE + SZ_4K - 1,
 253        .flags                  = IORESOURCE_MEM,
 254};
 255
 256static struct platform_device versatile_i2c_device = {
 257        .name                   = "versatile-i2c",
 258        .id                     = 0,
 259        .num_resources          = 1,
 260        .resource               = &versatile_i2c_resource,
 261};
 262
 263static struct i2c_board_info versatile_i2c_board_info[] = {
 264        {
 265                I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 266        },
 267};
 268
 269static int __init versatile_i2c_init(void)
 270{
 271        return i2c_register_board_info(0, versatile_i2c_board_info,
 272                                       ARRAY_SIZE(versatile_i2c_board_info));
 273}
 274arch_initcall(versatile_i2c_init);
 275
 276#define VERSATILE_SYSMCI        (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
 277
 278unsigned int mmc_status(struct device *dev)
 279{
 280        struct amba_device *adev = container_of(dev, struct amba_device, dev);
 281        u32 mask;
 282
 283        if (adev->res.start == VERSATILE_MMCI0_BASE)
 284                mask = 1;
 285        else
 286                mask = 2;
 287
 288        return readl(VERSATILE_SYSMCI) & mask;
 289}
 290
 291static struct mmci_platform_data mmc0_plat_data = {
 292        .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 293        .status         = mmc_status,
 294        .gpio_wp        = -1,
 295        .gpio_cd        = -1,
 296};
 297
 298static struct resource char_lcd_resources[] = {
 299        {
 300                .start = VERSATILE_CHAR_LCD_BASE,
 301                .end   = (VERSATILE_CHAR_LCD_BASE + SZ_4K - 1),
 302                .flags = IORESOURCE_MEM,
 303        },
 304};
 305
 306static struct platform_device char_lcd_device = {
 307        .name           =       "arm-charlcd",
 308        .id             =       -1,
 309        .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 310        .resource       =       char_lcd_resources,
 311};
 312
 313static struct resource leds_resources[] = {
 314        {
 315                .start  = VERSATILE_SYS_BASE + VERSATILE_SYS_LED_OFFSET,
 316                .end    = VERSATILE_SYS_BASE + VERSATILE_SYS_LED_OFFSET + 4,
 317                .flags  = IORESOURCE_MEM,
 318        },
 319};
 320
 321static struct platform_device leds_device = {
 322        .name           = "versatile-leds",
 323        .id             = -1,
 324        .num_resources  = ARRAY_SIZE(leds_resources),
 325        .resource       = leds_resources,
 326};
 327
 328/*
 329 * Clock handling
 330 */
 331static const struct icst_params versatile_oscvco_params = {
 332        .ref            = 24000000,
 333        .vco_max        = ICST307_VCO_MAX,
 334        .vco_min        = ICST307_VCO_MIN,
 335        .vd_min         = 4 + 8,
 336        .vd_max         = 511 + 8,
 337        .rd_min         = 1 + 2,
 338        .rd_max         = 127 + 2,
 339        .s2div          = icst307_s2div,
 340        .idx2s          = icst307_idx2s,
 341};
 342
 343static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco)
 344{
 345        void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET;
 346        u32 val;
 347
 348        val = readl(clk->vcoreg) & ~0x7ffff;
 349        val |= vco.v | (vco.r << 9) | (vco.s << 16);
 350
 351        writel(0xa05f, sys_lock);
 352        writel(val, clk->vcoreg);
 353        writel(0, sys_lock);
 354}
 355
 356static const struct clk_ops osc4_clk_ops = {
 357        .round  = icst_clk_round,
 358        .set    = icst_clk_set,
 359        .setvco = versatile_oscvco_set,
 360};
 361
 362static struct clk osc4_clk = {
 363        .ops    = &osc4_clk_ops,
 364        .params = &versatile_oscvco_params,
 365};
 366
 367/*
 368 * These are fixed clocks.
 369 */
 370static struct clk ref24_clk = {
 371        .rate   = 24000000,
 372};
 373
 374static struct clk sp804_clk = {
 375        .rate   = 1000000,
 376};
 377
 378static struct clk dummy_apb_pclk;
 379
 380static struct clk_lookup lookups[] = {
 381        {       /* AMBA bus clock */
 382                .con_id         = "apb_pclk",
 383                .clk            = &dummy_apb_pclk,
 384        }, {    /* UART0 */
 385                .dev_id         = "dev:f1",
 386                .clk            = &ref24_clk,
 387        }, {    /* UART1 */
 388                .dev_id         = "dev:f2",
 389                .clk            = &ref24_clk,
 390        }, {    /* UART2 */
 391                .dev_id         = "dev:f3",
 392                .clk            = &ref24_clk,
 393        }, {    /* UART3 */
 394                .dev_id         = "fpga:09",
 395                .clk            = &ref24_clk,
 396        }, {    /* KMI0 */
 397                .dev_id         = "fpga:06",
 398                .clk            = &ref24_clk,
 399        }, {    /* KMI1 */
 400                .dev_id         = "fpga:07",
 401                .clk            = &ref24_clk,
 402        }, {    /* MMC0 */
 403                .dev_id         = "fpga:05",
 404                .clk            = &ref24_clk,
 405        }, {    /* MMC1 */
 406                .dev_id         = "fpga:0b",
 407                .clk            = &ref24_clk,
 408        }, {    /* SSP */
 409                .dev_id         = "dev:f4",
 410                .clk            = &ref24_clk,
 411        }, {    /* CLCD */
 412                .dev_id         = "dev:20",
 413                .clk            = &osc4_clk,
 414        }, {    /* SP804 timers */
 415                .dev_id         = "sp804",
 416                .clk            = &sp804_clk,
 417        },
 418};
 419
 420/*
 421 * CLCD support.
 422 */
 423#define SYS_CLCD_MODE_MASK      (3 << 0)
 424#define SYS_CLCD_MODE_888       (0 << 0)
 425#define SYS_CLCD_MODE_5551      (1 << 0)
 426#define SYS_CLCD_MODE_565_RLSB  (2 << 0)
 427#define SYS_CLCD_MODE_565_BLSB  (3 << 0)
 428#define SYS_CLCD_NLCDIOON       (1 << 2)
 429#define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 430#define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 431#define SYS_CLCD_ID_MASK        (0x1f << 8)
 432#define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 433#define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 434#define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 435#define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 436#define SYS_CLCD_ID_VGA         (0x1f << 8)
 437
 438static bool is_sanyo_2_5_lcd;
 439
 440/*
 441 * Disable all display connectors on the interface module.
 442 */
 443static void versatile_clcd_disable(struct clcd_fb *fb)
 444{
 445        void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
 446        u32 val;
 447
 448        val = readl(sys_clcd);
 449        val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 450        writel(val, sys_clcd);
 451
 452#ifdef CONFIG_MACH_VERSATILE_AB
 453        /*
 454         * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
 455         */
 456        if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
 457                void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
 458                unsigned long ctrl;
 459
 460                ctrl = readl(versatile_ib2_ctrl);
 461                ctrl &= ~0x01;
 462                writel(ctrl, versatile_ib2_ctrl);
 463        }
 464#endif
 465}
 466
 467/*
 468 * Enable the relevant connector on the interface module.
 469 */
 470static void versatile_clcd_enable(struct clcd_fb *fb)
 471{
 472        struct fb_var_screeninfo *var = &fb->fb.var;
 473        void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
 474        u32 val;
 475
 476        val = readl(sys_clcd);
 477        val &= ~SYS_CLCD_MODE_MASK;
 478
 479        switch (var->green.length) {
 480        case 5:
 481                val |= SYS_CLCD_MODE_5551;
 482                break;
 483        case 6:
 484                if (var->red.offset == 0)
 485                        val |= SYS_CLCD_MODE_565_RLSB;
 486                else
 487                        val |= SYS_CLCD_MODE_565_BLSB;
 488                break;
 489        case 8:
 490                val |= SYS_CLCD_MODE_888;
 491                break;
 492        }
 493
 494        /*
 495         * Set the MUX
 496         */
 497        writel(val, sys_clcd);
 498
 499        /*
 500         * And now enable the PSUs
 501         */
 502        val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 503        writel(val, sys_clcd);
 504
 505#ifdef CONFIG_MACH_VERSATILE_AB
 506        /*
 507         * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
 508         */
 509        if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
 510                void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
 511                unsigned long ctrl;
 512
 513                ctrl = readl(versatile_ib2_ctrl);
 514                ctrl |= 0x01;
 515                writel(ctrl, versatile_ib2_ctrl);
 516        }
 517#endif
 518}
 519
 520/*
 521 * Detect which LCD panel is connected, and return the appropriate
 522 * clcd_panel structure.  Note: we do not have any information on
 523 * the required timings for the 8.4in panel, so we presently assume
 524 * VGA timings.
 525 */
 526static int versatile_clcd_setup(struct clcd_fb *fb)
 527{
 528        void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
 529        const char *panel_name;
 530        u32 val;
 531
 532        is_sanyo_2_5_lcd = false;
 533
 534        val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 535        if (val == SYS_CLCD_ID_SANYO_3_8)
 536                panel_name = "Sanyo TM38QV67A02A";
 537        else if (val == SYS_CLCD_ID_SANYO_2_5) {
 538                panel_name = "Sanyo QVGA Portrait";
 539                is_sanyo_2_5_lcd = true;
 540        } else if (val == SYS_CLCD_ID_EPSON_2_2)
 541                panel_name = "Epson L2F50113T00";
 542        else if (val == SYS_CLCD_ID_VGA)
 543                panel_name = "VGA";
 544        else {
 545                printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
 546                        val);
 547                panel_name = "VGA";
 548        }
 549
 550        fb->panel = versatile_clcd_get_panel(panel_name);
 551        if (!fb->panel)
 552                return -EINVAL;
 553
 554        return versatile_clcd_setup_dma(fb, SZ_1M);
 555}
 556
 557static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
 558{
 559        clcdfb_decode(fb, regs);
 560
 561        /* Always clear BGR for RGB565: we do the routing externally */
 562        if (fb->fb.var.green.length == 6)
 563                regs->cntl &= ~CNTL_BGR;
 564}
 565
 566static struct clcd_board clcd_plat_data = {
 567        .name           = "Versatile",
 568        .caps           = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
 569        .check          = clcdfb_check,
 570        .decode         = versatile_clcd_decode,
 571        .disable        = versatile_clcd_disable,
 572        .enable         = versatile_clcd_enable,
 573        .setup          = versatile_clcd_setup,
 574        .mmap           = versatile_clcd_mmap_dma,
 575        .remove         = versatile_clcd_remove_dma,
 576};
 577
 578static struct pl061_platform_data gpio0_plat_data = {
 579        .gpio_base      = 0,
 580        .irq_base       = IRQ_GPIO0_START,
 581};
 582
 583static struct pl061_platform_data gpio1_plat_data = {
 584        .gpio_base      = 8,
 585        .irq_base       = IRQ_GPIO1_START,
 586};
 587
 588static struct pl061_platform_data gpio2_plat_data = {
 589        .gpio_base      = 16,
 590        .irq_base       = IRQ_GPIO2_START,
 591};
 592
 593static struct pl061_platform_data gpio3_plat_data = {
 594        .gpio_base      = 24,
 595        .irq_base       = IRQ_GPIO3_START,
 596};
 597
 598static struct pl022_ssp_controller ssp0_plat_data = {
 599        .bus_id = 0,
 600        .enable_dma = 0,
 601        .num_chipselect = 1,
 602};
 603
 604#define AACI_IRQ        { IRQ_AACI }
 605#define MMCI0_IRQ       { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
 606#define KMI0_IRQ        { IRQ_SIC_KMI0 }
 607#define KMI1_IRQ        { IRQ_SIC_KMI1 }
 608
 609/*
 610 * These devices are connected directly to the multi-layer AHB switch
 611 */
 612#define SMC_IRQ         { }
 613#define MPMC_IRQ        { }
 614#define CLCD_IRQ        { IRQ_CLCDINT }
 615#define DMAC_IRQ        { IRQ_DMAINT }
 616
 617/*
 618 * These devices are connected via the core APB bridge
 619 */
 620#define SCTL_IRQ        { }
 621#define WATCHDOG_IRQ    { IRQ_WDOGINT }
 622#define GPIO0_IRQ       { IRQ_GPIOINT0 }
 623#define GPIO1_IRQ       { IRQ_GPIOINT1 }
 624#define GPIO2_IRQ       { IRQ_GPIOINT2 }
 625#define GPIO3_IRQ       { IRQ_GPIOINT3 }
 626#define RTC_IRQ         { IRQ_RTCINT }
 627
 628/*
 629 * These devices are connected via the DMA APB bridge
 630 */
 631#define SCI_IRQ         { IRQ_SCIINT }
 632#define UART0_IRQ       { IRQ_UARTINT0 }
 633#define UART1_IRQ       { IRQ_UARTINT1 }
 634#define UART2_IRQ       { IRQ_UARTINT2 }
 635#define SSP_IRQ         { IRQ_SSPINT }
 636
 637/* FPGA Primecells */
 638APB_DEVICE(aaci,  "fpga:04", AACI,     NULL);
 639APB_DEVICE(mmc0,  "fpga:05", MMCI0,    &mmc0_plat_data);
 640APB_DEVICE(kmi0,  "fpga:06", KMI0,     NULL);
 641APB_DEVICE(kmi1,  "fpga:07", KMI1,     NULL);
 642
 643/* DevChip Primecells */
 644AHB_DEVICE(smc,   "dev:00",  SMC,      NULL);
 645AHB_DEVICE(mpmc,  "dev:10",  MPMC,     NULL);
 646AHB_DEVICE(clcd,  "dev:20",  CLCD,     &clcd_plat_data);
 647AHB_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
 648APB_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
 649APB_DEVICE(wdog,  "dev:e1",  WATCHDOG, NULL);
 650APB_DEVICE(gpio0, "dev:e4",  GPIO0,    &gpio0_plat_data);
 651APB_DEVICE(gpio1, "dev:e5",  GPIO1,    &gpio1_plat_data);
 652APB_DEVICE(gpio2, "dev:e6",  GPIO2,    &gpio2_plat_data);
 653APB_DEVICE(gpio3, "dev:e7",  GPIO3,    &gpio3_plat_data);
 654APB_DEVICE(rtc,   "dev:e8",  RTC,      NULL);
 655APB_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 656APB_DEVICE(uart0, "dev:f1",  UART0,    NULL);
 657APB_DEVICE(uart1, "dev:f2",  UART1,    NULL);
 658APB_DEVICE(uart2, "dev:f3",  UART2,    NULL);
 659APB_DEVICE(ssp0,  "dev:f4",  SSP,      &ssp0_plat_data);
 660
 661static struct amba_device *amba_devs[] __initdata = {
 662        &dmac_device,
 663        &uart0_device,
 664        &uart1_device,
 665        &uart2_device,
 666        &smc_device,
 667        &mpmc_device,
 668        &clcd_device,
 669        &sctl_device,
 670        &wdog_device,
 671        &gpio0_device,
 672        &gpio1_device,
 673        &gpio2_device,
 674        &gpio3_device,
 675        &rtc_device,
 676        &sci0_device,
 677        &ssp0_device,
 678        &aaci_device,
 679        &mmc0_device,
 680        &kmi0_device,
 681        &kmi1_device,
 682};
 683
 684#ifdef CONFIG_OF
 685/*
 686 * Lookup table for attaching a specific name and platform_data pointer to
 687 * devices as they get created by of_platform_populate().  Ideally this table
 688 * would not exist, but the current clock implementation depends on some devices
 689 * having a specific name.
 690 */
 691struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
 692        OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", &mmc0_plat_data),
 693        OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE, "fpga:06", NULL),
 694        OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE, "fpga:07", NULL),
 695        OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE, "fpga:09", NULL),
 696        /* FIXME: this is buggy, the platform data is needed for this MMC instance too */
 697        OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", NULL),
 698
 699        OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data),
 700        OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE, "dev:f1", NULL),
 701        OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE, "dev:f2", NULL),
 702        OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE, "dev:f3", NULL),
 703        OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE, "dev:f4", &ssp0_plat_data),
 704
 705#if 0
 706        /*
 707         * These entries are unnecessary because no clocks referencing
 708         * them.  I've left them in for now as place holders in case
 709         * any of them need to be added back, but they should be
 710         * removed before actually committing this patch.  --gcl
 711         */
 712        OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE, "fpga:04", NULL),
 713        OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE, "fpga:0a", NULL),
 714        OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE, "dev:00", NULL),
 715        OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE, "dev:10", NULL),
 716        OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE, "dev:30", NULL),
 717
 718        OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE, "dev:e0", NULL),
 719        OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE, "dev:e1", NULL),
 720        OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE, "dev:e4", NULL),
 721        OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE, "dev:e5", NULL),
 722        OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE, "dev:e6", NULL),
 723        OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE, "dev:e7", NULL),
 724        OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE, "dev:e8", NULL),
 725        OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE, "dev:f0", NULL),
 726#endif
 727        {}
 728};
 729#endif
 730
 731void versatile_restart(enum reboot_mode mode, const char *cmd)
 732{
 733        void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
 734        u32 val;
 735
 736        val = __raw_readl(sys + VERSATILE_SYS_RESETCTL_OFFSET);
 737        val |= 0x105;
 738
 739        __raw_writel(0xa05f, sys + VERSATILE_SYS_LOCK_OFFSET);
 740        __raw_writel(val, sys + VERSATILE_SYS_RESETCTL_OFFSET);
 741        __raw_writel(0, sys + VERSATILE_SYS_LOCK_OFFSET);
 742}
 743
 744/* Early initializations */
 745void __init versatile_init_early(void)
 746{
 747        u32 val;
 748        void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
 749
 750        osc4_clk.vcoreg = sys + VERSATILE_SYS_OSCCLCD_OFFSET;
 751        clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 752
 753        versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000);
 754
 755        /*
 756         * set clock frequency:
 757         *      VERSATILE_REFCLK is 32KHz
 758         *      VERSATILE_TIMCLK is 1MHz
 759         */
 760        val = readl(__io_address(VERSATILE_SCTL_BASE));
 761        writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) |
 762               (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) |
 763               (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) |
 764               (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val,
 765               __io_address(VERSATILE_SCTL_BASE));
 766}
 767
 768void __init versatile_init(void)
 769{
 770        int i;
 771
 772        platform_device_register(&versatile_flash_device);
 773        platform_device_register(&versatile_i2c_device);
 774        platform_device_register(&smc91x_device);
 775        platform_device_register(&char_lcd_device);
 776        platform_device_register(&leds_device);
 777
 778        for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 779                struct amba_device *d = amba_devs[i];
 780                amba_device_register(d, &iomem_resource);
 781        }
 782}
 783
 784/*
 785 * Where is the timer (VA)?
 786 */
 787#define TIMER0_VA_BASE           __io_address(VERSATILE_TIMER0_1_BASE)
 788#define TIMER1_VA_BASE          (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
 789#define TIMER2_VA_BASE           __io_address(VERSATILE_TIMER2_3_BASE)
 790#define TIMER3_VA_BASE          (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
 791
 792/*
 793 * Set up timer interrupt, and return the current time in seconds.
 794 */
 795void __init versatile_timer_init(void)
 796{
 797
 798        /*
 799         * Initialise to a known state (all timers off)
 800         */
 801        sp804_timer_disable(TIMER0_VA_BASE);
 802        sp804_timer_disable(TIMER1_VA_BASE);
 803        sp804_timer_disable(TIMER2_VA_BASE);
 804        sp804_timer_disable(TIMER3_VA_BASE);
 805
 806        sp804_clocksource_init(TIMER3_VA_BASE, "timer3");
 807        sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1, "timer0");
 808}
 809