arch/arm/mach-versatile/core.c

   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/amba/pl061.h>
  32 #include <linux/amba/mmci.h>
  33 #include <linux/amba/pl022.h>
  34 #include <linux/io.h>
  35 #include <linux/gfp.h>
  36 #include <linux/clkdev.h>
  37 #include <linux/mtd/physmap.h>
  38
  39 #include <asm/irq.h>
  40 #include <asm/hardware/arm_timer.h>
  41 #include <asm/hardware/icst.h>
  42 #include <asm/hardware/vic.h>
  43 #include <asm/mach-types.h>
  44
  45 #include <asm/mach/arch.h>
  46 #include <asm/mach/irq.h>
  47 #include <asm/mach/time.h>
  48 #include <asm/mach/map.h>
  49 #include <mach/hardware.h>
  50 #include <mach/platform.h>
  51 #include <asm/hardware/timer-sp.h>
  52
  53 #include <plat/clcd.h>
  54 #include <plat/fpga-irq.h>
  55 #include <plat/sched_clock.h>
  56
  57 #include "core.h"
  58
  59 /*
  60  * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
  61  * is the (PA >> 12).
  62  *
  63  * Setup a VA for the Versatile Vectored Interrupt Controller.
  64  */
  65 #define VA_VIC_BASE             __io_address(VERSATILE_VIC_BASE)
  66 #define VA_SIC_BASE             __io_address(VERSATILE_SIC_BASE)
  67
  68 #if 1
  69 #define IRQ_MMCI0A      IRQ_VICSOURCE22
  70 #define IRQ_AACI        IRQ_VICSOURCE24
  71 #define IRQ_ETH         IRQ_VICSOURCE25
  72 #define PIC_MASK        0xFFD00000
  73 #else
  74 #define IRQ_MMCI0A      IRQ_SIC_MMCI0A
  75 #define IRQ_AACI        IRQ_SIC_AACI
  76 #define IRQ_ETH         IRQ_SIC_ETH
  77 #define PIC_MASK        0
  78 #endif
  79
  80 /* Lookup table for finding a DT node that represents the vic instance */
  81 static const struct of_device_id vic_of_match[] __initconst = {
  82         { .compatible = "arm,versatile-vic", },
  83         {}
  84 };
  85
  86 static const struct of_device_id sic_of_match[] __initconst = {
  87         { .compatible = "arm,versatile-sic", },
  88         {}
  89 };
  90
  91 void __init versatile_init_irq(void)
  92 {
  93         struct device_node *np;
  94
  95         np = of_find_matching_node_by_address(NULL, vic_of_match,
  96                                               VERSATILE_VIC_BASE);
  97         __vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0, 0, np);
  98
  99         writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
 100
 101         np = of_find_matching_node_by_address(NULL, sic_of_match,
 102                                               VERSATILE_SIC_BASE);
 103
 104         fpga_irq_init(VA_SIC_BASE, "SIC", IRQ_SIC_START,
 105                 IRQ_VICSOURCE31, ~PIC_MASK, np);
 106
 107         /*
 108          * Interrupts on secondary controller from 0 to 8 are routed to
 109          * source 31 on PIC.
 110          * Interrupts from 21 to 31 are routed directly to the VIC on
 111          * the corresponding number on primary controller. This is controlled
 112          * by setting PIC_ENABLEx.
 113          */
 114         writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE);
 115 }
 116
 117 static struct map_desc versatile_io_desc[] __initdata = {
 118         {
 119                 .virtual        =  IO_ADDRESS(VERSATILE_SYS_BASE),
 120                 .pfn            = __phys_to_pfn(VERSATILE_SYS_BASE),
 121                 .length         = SZ_4K,
 122                 .type           = MT_DEVICE
 123         }, {
 124                 .virtual        =  IO_ADDRESS(VERSATILE_SIC_BASE),
 125                 .pfn            = __phys_to_pfn(VERSATILE_SIC_BASE),
 126                 .length         = SZ_4K,
 127                 .type           = MT_DEVICE
 128         }, {
 129                 .virtual        =  IO_ADDRESS(VERSATILE_VIC_BASE),
 130                 .pfn            = __phys_to_pfn(VERSATILE_VIC_BASE),
 131                 .length         = SZ_4K,
 132                 .type           = MT_DEVICE
 133         }, {
 134                 .virtual        =  IO_ADDRESS(VERSATILE_SCTL_BASE),
 135                 .pfn            = __phys_to_pfn(VERSATILE_SCTL_BASE),
 136                 .length         = SZ_4K * 9,
 137                 .type           = MT_DEVICE
 138         },
 139 #ifdef CONFIG_MACH_VERSATILE_AB
 140         {
 141                 .virtual        =  IO_ADDRESS(VERSATILE_IB2_BASE),
 142                 .pfn            = __phys_to_pfn(VERSATILE_IB2_BASE),
 143                 .length         = SZ_64M,
 144                 .type           = MT_DEVICE
 145         },
 146 #endif
 147 #ifdef CONFIG_DEBUG_LL
 148         {
 149                 .virtual        =  IO_ADDRESS(VERSATILE_UART0_BASE),
 150                 .pfn            = __phys_to_pfn(VERSATILE_UART0_BASE),
 151                 .length         = SZ_4K,
 152                 .type           = MT_DEVICE
 153         },
 154 #endif
 155 #ifdef CONFIG_PCI
 156         {
 157                 .virtual        =  IO_ADDRESS(VERSATILE_PCI_CORE_BASE),
 158                 .pfn            = __phys_to_pfn(VERSATILE_PCI_CORE_BASE),
 159                 .length         = SZ_4K,
 160                 .type           = MT_DEVICE
 161         }, {
 162                 .virtual        =  (unsigned long)VERSATILE_PCI_VIRT_BASE,
 163                 .pfn            = __phys_to_pfn(VERSATILE_PCI_BASE),
 164                 .length         = VERSATILE_PCI_BASE_SIZE,
 165                 .type           = MT_DEVICE
 166         }, {
 167                 .virtual        =  (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE,
 168                 .pfn            = __phys_to_pfn(VERSATILE_PCI_CFG_BASE),
 169                 .length         = VERSATILE_PCI_CFG_BASE_SIZE,
 170                 .type           = MT_DEVICE
 171         }, {
 172                 .virtual        =  (unsigned long)VERSATILE_PCI_VIRT_MEM_BASE0,
 173                 .pfn            = __phys_to_pfn(VERSATILE_PCI_MEM_BASE0),
 174                 .length         = IO_SPACE_LIMIT,
 175                 .type           = MT_DEVICE
 176         },
 177 #endif
 178 };
 179
 180 void __init versatile_map_io(void)
 181 {
 182         iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc));
 183 }
 184
 185
 186 #define VERSATILE_FLASHCTRL    (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
 187
 188 static void versatile_flash_set_vpp(struct platform_device *pdev, int on)
 189 {
 190         u32 val;
 191
 192         val = __raw_readl(VERSATILE_FLASHCTRL);
 193         if (on)
 194                 val |= VERSATILE_FLASHPROG_FLVPPEN;
 195         else
 196                 val &= ~VERSATILE_FLASHPROG_FLVPPEN;
 197         __raw_writel(val, VERSATILE_FLASHCTRL);
 198 }
 199
 200 static struct physmap_flash_data versatile_flash_data = {
 201         .width                  = 4,
 202         .set_vpp                = versatile_flash_set_vpp,
 203 };
 204
 205 static struct resource versatile_flash_resource = {
 206         .start                  = VERSATILE_FLASH_BASE,
 207         .end                    = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
 208         .flags                  = IORESOURCE_MEM,
 209 };
 210
 211 static struct platform_device versatile_flash_device = {
 212         .name                   = "physmap-flash",
 213         .id                     = 0,
 214         .dev                    = {
 215                 .platform_data  = &versatile_flash_data,
 216         },
 217         .num_resources          = 1,
 218         .resource               = &versatile_flash_resource,
 219 };
 220
 221 static struct resource smc91x_resources[] = {
 222         [0] = {
 223                 .start          = VERSATILE_ETH_BASE,
 224                 .end            = VERSATILE_ETH_BASE + SZ_64K - 1,
 225                 .flags          = IORESOURCE_MEM,
 226         },
 227         [1] = {
 228                 .start          = IRQ_ETH,
 229                 .end            = IRQ_ETH,
 230                 .flags          = IORESOURCE_IRQ,
 231         },
 232 };
 233
 234 static struct platform_device smc91x_device = {
 235         .name           = "smc91x",
 236         .id             = 0,
 237         .num_resources  = ARRAY_SIZE(smc91x_resources),
 238         .resource       = smc91x_resources,
 239 };
 240
 241 static struct resource versatile_i2c_resource = {
 242         .start                  = VERSATILE_I2C_BASE,
 243         .end                    = VERSATILE_I2C_BASE + SZ_4K - 1,
 244         .flags                  = IORESOURCE_MEM,
 245 };
 246
 247 static struct platform_device versatile_i2c_device = {
 248         .name                   = "versatile-i2c",
 249         .id                     = 0,
 250         .num_resources          = 1,
 251         .resource               = &versatile_i2c_resource,
 252 };
 253
 254 static struct i2c_board_info versatile_i2c_board_info[] = {
 255         {
 256                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 257         },
 258 };
 259
 260 static int __init versatile_i2c_init(void)
 261 {
 262         return i2c_register_board_info(0, versatile_i2c_board_info,
 263                                        ARRAY_SIZE(versatile_i2c_board_info));
 264 }
 265 arch_initcall(versatile_i2c_init);
 266
 267 #define VERSATILE_SYSMCI        (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
 268
 269 unsigned int mmc_status(struct device *dev)
 270 {
 271         struct amba_device *adev = container_of(dev, struct amba_device, dev);
 272         u32 mask;
 273
 274         if (adev->res.start == VERSATILE_MMCI0_BASE)
 275                 mask = 1;
 276         else
 277                 mask = 2;
 278
 279         return readl(VERSATILE_SYSMCI) & mask;
 280 }
 281
 282 static struct mmci_platform_data mmc0_plat_data = {
 283         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 284         .status         = mmc_status,
 285         .gpio_wp        = -1,
 286         .gpio_cd        = -1,
 287 };
 288
 289 static struct resource char_lcd_resources[] = {
 290         {
 291                 .start = VERSATILE_CHAR_LCD_BASE,
 292                 .end   = (VERSATILE_CHAR_LCD_BASE + SZ_4K - 1),
 293                 .flags = IORESOURCE_MEM,
 294         },
 295 };
 296
 297 static struct platform_device char_lcd_device = {
 298         .name           =       "arm-charlcd",
 299         .id             =       -1,
 300         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 301         .resource       =       char_lcd_resources,
 302 };
 303
 304 /*
 305  * Clock handling
 306  */
 307 static const struct icst_params versatile_oscvco_params = {
 308         .ref            = 24000000,
 309         .vco_max        = ICST307_VCO_MAX,
 310         .vco_min        = ICST307_VCO_MIN,
 311         .vd_min         = 4 + 8,
 312         .vd_max         = 511 + 8,
 313         .rd_min         = 1 + 2,
 314         .rd_max         = 127 + 2,
 315         .s2div          = icst307_s2div,
 316         .idx2s          = icst307_idx2s,
 317 };
 318
 319 static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco)
 320 {
 321         void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET;
 322         u32 val;
 323
 324         val = readl(clk->vcoreg) & ~0x7ffff;
 325         val |= vco.v | (vco.r << 9) | (vco.s << 16);
 326
 327         writel(0xa05f, sys_lock);
 328         writel(val, clk->vcoreg);
 329         writel(0, sys_lock);
 330 }
 331
 332 static const struct clk_ops osc4_clk_ops = {
 333         .round  = icst_clk_round,
 334         .set    = icst_clk_set,
 335         .setvco = versatile_oscvco_set,
 336 };
 337
 338 static struct clk osc4_clk = {
 339         .ops    = &osc4_clk_ops,
 340         .params = &versatile_oscvco_params,
 341 };
 342
 343 /*
 344  * These are fixed clocks.
 345  */
 346 static struct clk ref24_clk = {
 347         .rate   = 24000000,
 348 };
 349
 350 static struct clk sp804_clk = {
 351         .rate   = 1000000,
 352 };
 353
 354 static struct clk dummy_apb_pclk;
 355
 356 static struct clk_lookup lookups[] = {
 357         {       /* AMBA bus clock */
 358                 .con_id         = "apb_pclk",
 359                 .clk            = &dummy_apb_pclk,
 360         }, {    /* UART0 */
 361                 .dev_id         = "dev:f1",
 362                 .clk            = &ref24_clk,
 363         }, {    /* UART1 */
 364                 .dev_id         = "dev:f2",
 365                 .clk            = &ref24_clk,
 366         }, {    /* UART2 */
 367                 .dev_id         = "dev:f3",
 368                 .clk            = &ref24_clk,
 369         }, {    /* UART3 */
 370                 .dev_id         = "fpga:09",
 371                 .clk            = &ref24_clk,
 372         }, {    /* KMI0 */
 373                 .dev_id         = "fpga:06",
 374                 .clk            = &ref24_clk,
 375         }, {    /* KMI1 */
 376                 .dev_id         = "fpga:07",
 377                 .clk            = &ref24_clk,
 378         }, {    /* MMC0 */
 379                 .dev_id         = "fpga:05",
 380                 .clk            = &ref24_clk,
 381         }, {    /* MMC1 */
 382                 .dev_id         = "fpga:0b",
 383                 .clk            = &ref24_clk,
 384         }, {    /* SSP */
 385                 .dev_id         = "dev:f4",
 386                 .clk            = &ref24_clk,
 387         }, {    /* CLCD */
 388                 .dev_id         = "dev:20",
 389                 .clk            = &osc4_clk,
 390         }, {    /* SP804 timers */
 391                 .dev_id         = "sp804",
 392                 .clk            = &sp804_clk,
 393         },
 394 };
 395
 396 /*
 397  * CLCD support.
 398  */
 399 #define SYS_CLCD_MODE_MASK      (3 << 0)
 400 #define SYS_CLCD_MODE_888       (0 << 0)
 401 #define SYS_CLCD_MODE_5551      (1 << 0)
 402 #define SYS_CLCD_MODE_565_RLSB  (2 << 0)
 403 #define SYS_CLCD_MODE_565_BLSB  (3 << 0)
 404 #define SYS_CLCD_NLCDIOON       (1 << 2)
 405 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 406 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 407 #define SYS_CLCD_ID_MASK        (0x1f << 8)
 408 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 409 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 410 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 411 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 412 #define SYS_CLCD_ID_VGA         (0x1f << 8)
 413
 414 static bool is_sanyo_2_5_lcd;
 415
 416 /*
 417  * Disable all display connectors on the interface module.
 418  */
 419 static void versatile_clcd_disable(struct clcd_fb *fb)
 420 {
 421         void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
 422         u32 val;
 423
 424         val = readl(sys_clcd);
 425         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 426         writel(val, sys_clcd);
 427
 428 #ifdef CONFIG_MACH_VERSATILE_AB
 429         /*
 430          * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
 431          */
 432         if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
 433                 void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
 434                 unsigned long ctrl;
 435
 436                 ctrl = readl(versatile_ib2_ctrl);
 437                 ctrl &= ~0x01;
 438                 writel(ctrl, versatile_ib2_ctrl);
 439         }
 440 #endif
 441 }
 442
 443 /*
 444  * Enable the relevant connector on the interface module.
 445  */
 446 static void versatile_clcd_enable(struct clcd_fb *fb)
 447 {
 448         struct fb_var_screeninfo *var = &fb->fb.var;
 449         void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
 450         u32 val;
 451
 452         val = readl(sys_clcd);
 453         val &= ~SYS_CLCD_MODE_MASK;
 454
 455         switch (var->green.length) {
 456         case 5:
 457                 val |= SYS_CLCD_MODE_5551;
 458                 break;
 459         case 6:
 460                 if (var->red.offset == 0)
 461                         val |= SYS_CLCD_MODE_565_RLSB;
 462                 else
 463                         val |= SYS_CLCD_MODE_565_BLSB;
 464                 break;
 465         case 8:
 466                 val |= SYS_CLCD_MODE_888;
 467                 break;
 468         }
 469
 470         /*
 471          * Set the MUX
 472          */
 473         writel(val, sys_clcd);
 474
 475         /*
 476          * And now enable the PSUs
 477          */
 478         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 479         writel(val, sys_clcd);
 480
 481 #ifdef CONFIG_MACH_VERSATILE_AB
 482         /*
 483          * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
 484          */
 485         if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
 486                 void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
 487                 unsigned long ctrl;
 488
 489                 ctrl = readl(versatile_ib2_ctrl);
 490                 ctrl |= 0x01;
 491                 writel(ctrl, versatile_ib2_ctrl);
 492         }
 493 #endif
 494 }
 495
 496 /*
 497  * Detect which LCD panel is connected, and return the appropriate
 498  * clcd_panel structure.  Note: we do not have any information on
 499  * the required timings for the 8.4in panel, so we presently assume
 500  * VGA timings.
 501  */
 502 static int versatile_clcd_setup(struct clcd_fb *fb)
 503 {
 504         void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
 505         const char *panel_name;
 506         u32 val;
 507
 508         is_sanyo_2_5_lcd = false;
 509
 510         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 511         if (val == SYS_CLCD_ID_SANYO_3_8)
 512                 panel_name = "Sanyo TM38QV67A02A";
 513         else if (val == SYS_CLCD_ID_SANYO_2_5) {
 514                 panel_name = "Sanyo QVGA Portrait";
 515                 is_sanyo_2_5_lcd = true;
 516         } else if (val == SYS_CLCD_ID_EPSON_2_2)
 517                 panel_name = "Epson L2F50113T00";
 518         else if (val == SYS_CLCD_ID_VGA)
 519                 panel_name = "VGA";
 520         else {
 521                 printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
 522                         val);
 523                 panel_name = "VGA";
 524         }
 525
 526         fb->panel = versatile_clcd_get_panel(panel_name);
 527         if (!fb->panel)
 528                 return -EINVAL;
 529
 530         return versatile_clcd_setup_dma(fb, SZ_1M);
 531 }
 532
 533 static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
 534 {
 535         clcdfb_decode(fb, regs);
 536
 537         /* Always clear BGR for RGB565: we do the routing externally */
 538         if (fb->fb.var.green.length == 6)
 539                 regs->cntl &= ~CNTL_BGR;
 540 }
 541
 542 static struct clcd_board clcd_plat_data = {
 543         .name           = "Versatile",
 544         .caps           = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
 545         .check          = clcdfb_check,
 546         .decode         = versatile_clcd_decode,
 547         .disable        = versatile_clcd_disable,
 548         .enable         = versatile_clcd_enable,
 549         .setup          = versatile_clcd_setup,
 550         .mmap           = versatile_clcd_mmap_dma,
 551         .remove         = versatile_clcd_remove_dma,
 552 };
 553
 554 static struct pl061_platform_data gpio0_plat_data = {
 555         .gpio_base      = 0,
 556         .irq_base       = IRQ_GPIO0_START,
 557 };
 558
 559 static struct pl061_platform_data gpio1_plat_data = {
 560         .gpio_base      = 8,
 561         .irq_base       = IRQ_GPIO1_START,
 562 };
 563
 564 static struct pl022_ssp_controller ssp0_plat_data = {
 565         .bus_id = 0,
 566         .enable_dma = 0,
 567         .num_chipselect = 1,
 568 };
 569
 570 #define AACI_IRQ        { IRQ_AACI }
 571 #define MMCI0_IRQ       { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
 572 #define KMI0_IRQ        { IRQ_SIC_KMI0 }
 573 #define KMI1_IRQ        { IRQ_SIC_KMI1 }
 574
 575 /*
 576  * These devices are connected directly to the multi-layer AHB switch
 577  */
 578 #define SMC_IRQ         { }
 579 #define MPMC_IRQ        { }
 580 #define CLCD_IRQ        { IRQ_CLCDINT }
 581 #define DMAC_IRQ        { IRQ_DMAINT }
 582
 583 /*
 584  * These devices are connected via the core APB bridge
 585  */
 586 #define SCTL_IRQ        { }
 587 #define WATCHDOG_IRQ    { IRQ_WDOGINT }
 588 #define GPIO0_IRQ       { IRQ_GPIOINT0 }
 589 #define GPIO1_IRQ       { IRQ_GPIOINT1 }
 590 #define RTC_IRQ         { IRQ_RTCINT }
 591
 592 /*
 593  * These devices are connected via the DMA APB bridge
 594  */
 595 #define SCI_IRQ         { IRQ_SCIINT }
 596 #define UART0_IRQ       { IRQ_UARTINT0 }
 597 #define UART1_IRQ       { IRQ_UARTINT1 }
 598 #define UART2_IRQ       { IRQ_UARTINT2 }
 599 #define SSP_IRQ         { IRQ_SSPINT }
 600
 601 /* FPGA Primecells */
 602 APB_DEVICE(aaci,  "fpga:04", AACI,     NULL);
 603 APB_DEVICE(mmc0,  "fpga:05", MMCI0,    &mmc0_plat_data);
 604 APB_DEVICE(kmi0,  "fpga:06", KMI0,     NULL);
 605 APB_DEVICE(kmi1,  "fpga:07", KMI1,     NULL);
 606
 607 /* DevChip Primecells */
 608 AHB_DEVICE(smc,   "dev:00",  SMC,      NULL);
 609 AHB_DEVICE(mpmc,  "dev:10",  MPMC,     NULL);
 610 AHB_DEVICE(clcd,  "dev:20",  CLCD,     &clcd_plat_data);
 611 AHB_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
 612 APB_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
 613 APB_DEVICE(wdog,  "dev:e1",  WATCHDOG, NULL);
 614 APB_DEVICE(gpio0, "dev:e4",  GPIO0,    &gpio0_plat_data);
 615 APB_DEVICE(gpio1, "dev:e5",  GPIO1,    &gpio1_plat_data);
 616 APB_DEVICE(rtc,   "dev:e8",  RTC,      NULL);
 617 APB_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 618 APB_DEVICE(uart0, "dev:f1",  UART0,    NULL);
 619 APB_DEVICE(uart1, "dev:f2",  UART1,    NULL);
 620 APB_DEVICE(uart2, "dev:f3",  UART2,    NULL);
 621 APB_DEVICE(ssp0,  "dev:f4",  SSP,      &ssp0_plat_data);
 622
 623 static struct amba_device *amba_devs[] __initdata = {
 624         &dmac_device,
 625         &uart0_device,
 626         &uart1_device,
 627         &uart2_device,
 628         &smc_device,
 629         &mpmc_device,
 630         &clcd_device,
 631         &sctl_device,
 632         &wdog_device,
 633         &gpio0_device,
 634         &gpio1_device,
 635         &rtc_device,
 636         &sci0_device,
 637         &ssp0_device,
 638         &aaci_device,
 639         &mmc0_device,
 640         &kmi0_device,
 641         &kmi1_device,
 642 };
 643
 644 #ifdef CONFIG_OF
 645 /*
 646  * Lookup table for attaching a specific name and platform_data pointer to
 647  * devices as they get created by of_platform_populate().  Ideally this table
 648  * would not exist, but the current clock implementation depends on some devices
 649  * having a specific name.
 650  */
 651 struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
 652         OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", &mmc0_plat_data),
 653         OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE, "fpga:06", NULL),
 654         OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE, "fpga:07", NULL),
 655         OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE, "fpga:09", NULL),
 656         /* FIXME: this is buggy, the platform data is needed for this MMC instance too */
 657         OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", NULL),
 658
 659         OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data),
 660         OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE, "dev:f1", NULL),
 661         OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE, "dev:f2", NULL),
 662         OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE, "dev:f3", NULL),
 663         OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE, "dev:f4", &ssp0_plat_data),
 664
 665 #if 0
 666         /*
 667          * These entries are unnecessary because no clocks referencing
 668          * them.  I've left them in for now as place holders in case
 669          * any of them need to be added back, but they should be
 670          * removed before actually committing this patch.  --gcl
 671          */
 672         OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE, "fpga:04", NULL),
 673         OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE, "fpga:0a", NULL),
 674         OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE, "dev:00", NULL),
 675         OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE, "dev:10", NULL),
 676         OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE, "dev:30", NULL),
 677
 678         OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE, "dev:e0", NULL),
 679         OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE, "dev:e1", NULL),
 680         OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE, "dev:e4", NULL),
 681         OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE, "dev:e5", NULL),
 682         OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE, "dev:e6", NULL),
 683         OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE, "dev:e7", NULL),
 684         OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE, "dev:e8", NULL),
 685         OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE, "dev:f0", NULL),
 686 #endif
 687         {}
 688 };
 689 #endif
 690
 691 #ifdef CONFIG_LEDS
 692 #define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET)
 693
 694 static void versatile_leds_event(led_event_t ledevt)
 695 {
 696         unsigned long flags;
 697         u32 val;
 698
 699         local_irq_save(flags);
 700         val = readl(VA_LEDS_BASE);
 701
 702         switch (ledevt) {
 703         case led_idle_start:
 704                 val = val & ~VERSATILE_SYS_LED0;
 705                 break;
 706
 707         case led_idle_end:
 708                 val = val | VERSATILE_SYS_LED0;
 709                 break;
 710
 711         case led_timer:
 712                 val = val ^ VERSATILE_SYS_LED1;
 713                 break;
 714
 715         case led_halted:
 716                 val = 0;
 717                 break;
 718
 719         default:
 720                 break;
 721         }
 722
 723         writel(val, VA_LEDS_BASE);
 724         local_irq_restore(flags);
 725 }
 726 #endif  /* CONFIG_LEDS */
 727
 728 void versatile_restart(char mode, const char *cmd)
 729 {
 730         void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
 731         u32 val;
 732
 733         val = __raw_readl(sys + VERSATILE_SYS_RESETCTL_OFFSET);
 734         val |= 0x105;
 735
 736         __raw_writel(0xa05f, sys + VERSATILE_SYS_LOCK_OFFSET);
 737         __raw_writel(val, sys + VERSATILE_SYS_RESETCTL_OFFSET);
 738         __raw_writel(0, sys + VERSATILE_SYS_LOCK_OFFSET);
 739 }
 740
 741 /* Early initializations */
 742 void __init versatile_init_early(void)
 743 {
 744         void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
 745
 746         osc4_clk.vcoreg = sys + VERSATILE_SYS_OSCCLCD_OFFSET;
 747         clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 748
 749         versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000);
 750 }
 751
 752 void __init versatile_init(void)
 753 {
 754         int i;
 755
 756         platform_device_register(&versatile_flash_device);
 757         platform_device_register(&versatile_i2c_device);
 758         platform_device_register(&smc91x_device);
 759         platform_device_register(&char_lcd_device);
 760
 761         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 762                 struct amba_device *d = amba_devs[i];
 763                 amba_device_register(d, &iomem_resource);
 764         }
 765 }
 766
 767 /*
 768  * Where is the timer (VA)?
 769  */
 770 #define TIMER0_VA_BASE           __io_address(VERSATILE_TIMER0_1_BASE)
 771 #define TIMER1_VA_BASE          (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
 772 #define TIMER2_VA_BASE           __io_address(VERSATILE_TIMER2_3_BASE)
 773 #define TIMER3_VA_BASE          (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
 774
 775 /*
 776  * Set up timer interrupt, and return the current time in seconds.
 777  */
 778 static void __init versatile_timer_init(void)
 779 {
 780         u32 val;
 781
 782         /*
 783          * set clock frequency:
 784          *      VERSATILE_REFCLK is 32KHz
 785          *      VERSATILE_TIMCLK is 1MHz
 786          */
 787         val = readl(__io_address(VERSATILE_SCTL_BASE));
 788         writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) |
 789                (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) |
 790                (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) |
 791                (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val,
 792                __io_address(VERSATILE_SCTL_BASE));
 793
 794         /*
 795          * Initialise to a known state (all timers off)
 796          */
 797         writel(0, TIMER0_VA_BASE + TIMER_CTRL);
 798         writel(0, TIMER1_VA_BASE + TIMER_CTRL);
 799         writel(0, TIMER2_VA_BASE + TIMER_CTRL);
 800         writel(0, TIMER3_VA_BASE + TIMER_CTRL);
 801
 802         sp804_clocksource_init(TIMER3_VA_BASE, "timer3");
 803         sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1, "timer0");
 804 }
 805
 806 struct sys_timer versatile_timer = {
 807         .init           = versatile_timer_init,
 808 };
 809