linux/arch/arm/mach-pxa/trizeps4.c
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   1/*
   2 *  linux/arch/arm/mach-pxa/trizeps4.c
   3 *
   4 *  Support for the Keith und Koep Trizeps4 Module Platform.
   5 *
   6 *  Author:     Jürgen Schindele
   7 *  Created:    20 02, 2006
   8 *  Copyright:  Jürgen Schindele
   9 *
  10 *  This program is free software; you can redistribute it and/or modify
  11 *  it under the terms of the GNU General Public License version 2 as
  12 *  published by the Free Software Foundation.
  13 */
  14
  15#include <linux/init.h>
  16#include <linux/kernel.h>
  17#include <linux/platform_device.h>
  18#include <linux/interrupt.h>
  19#include <linux/export.h>
  20#include <linux/sched.h>
  21#include <linux/bitops.h>
  22#include <linux/fb.h>
  23#include <linux/ioport.h>
  24#include <linux/delay.h>
  25#include <linux/gpio.h>
  26#include <linux/dm9000.h>
  27#include <linux/mtd/physmap.h>
  28#include <linux/mtd/partitions.h>
  29#include <linux/regulator/machine.h>
  30#include <linux/i2c/pxa-i2c.h>
  31
  32#include <asm/types.h>
  33#include <asm/setup.h>
  34#include <asm/memory.h>
  35#include <asm/mach-types.h>
  36#include <asm/irq.h>
  37#include <asm/sizes.h>
  38
  39#include <asm/mach/arch.h>
  40#include <asm/mach/map.h>
  41#include <asm/mach/irq.h>
  42#include <asm/mach/flash.h>
  43
  44#include "pxa27x.h"
  45#include <mach/trizeps4.h>
  46#include <mach/audio.h>
  47#include <linux/platform_data/video-pxafb.h>
  48#include <linux/platform_data/mmc-pxamci.h>
  49#include <linux/platform_data/irda-pxaficp.h>
  50#include <linux/platform_data/usb-ohci-pxa27x.h>
  51#include <mach/smemc.h>
  52
  53#include "generic.h"
  54#include "devices.h"
  55
  56/*      comment out the following line if you want to use the
  57 *      Standard UART from PXA for serial / irda transmission
  58 *      and acivate it if you have status leds connected */
  59#define STATUS_LEDS_ON_STUART_PINS 1
  60
  61/*****************************************************************************
  62 * MultiFunctionPins of CPU
  63 *****************************************************************************/
  64static unsigned long trizeps4_pin_config[] __initdata = {
  65        /* Chip Selects */
  66        GPIO15_nCS_1,           /* DiskOnChip CS */
  67        GPIO93_GPIO,            /* TRIZEPS4_DOC_IRQ */
  68        GPIO94_GPIO,            /* DOC lock */
  69
  70        GPIO78_nCS_2,           /* DM9000 CS */
  71        GPIO101_GPIO,           /* TRIZEPS4_ETH_IRQ */
  72
  73        GPIO79_nCS_3,           /* Logic CS */
  74        GPIO0_GPIO | WAKEUP_ON_EDGE_RISE,       /* Logic irq */
  75
  76        /* AC97 */
  77        GPIO28_AC97_BITCLK,
  78        GPIO29_AC97_SDATA_IN_0,
  79        GPIO30_AC97_SDATA_OUT,
  80        GPIO31_AC97_SYNC,
  81
  82        /* LCD - 16bpp Active TFT */
  83        GPIOxx_LCD_TFT_16BPP,
  84
  85        /* UART */
  86        GPIO9_FFUART_CTS,
  87        GPIO10_FFUART_DCD,
  88        GPIO16_FFUART_TXD,
  89        GPIO33_FFUART_DSR,
  90        GPIO38_FFUART_RI,
  91        GPIO82_FFUART_DTR,
  92        GPIO83_FFUART_RTS,
  93        GPIO96_FFUART_RXD,
  94
  95        GPIO42_BTUART_RXD,
  96        GPIO43_BTUART_TXD,
  97        GPIO44_BTUART_CTS,
  98        GPIO45_BTUART_RTS,
  99#ifdef STATUS_LEDS_ON_STUART_PINS
 100        GPIO46_GPIO,
 101        GPIO47_GPIO,
 102#else
 103        GPIO46_STUART_RXD,
 104        GPIO47_STUART_TXD,
 105#endif
 106        /* PCMCIA */
 107        GPIO11_GPIO,                    /* TRIZEPS4_CD_IRQ */
 108        GPIO13_GPIO,                    /* TRIZEPS4_READY_NINT */
 109        GPIO48_nPOE,
 110        GPIO49_nPWE,
 111        GPIO50_nPIOR,
 112        GPIO51_nPIOW,
 113        GPIO54_nPCE_2,
 114        GPIO55_nPREG,
 115        GPIO56_nPWAIT,
 116        GPIO57_nIOIS16,
 117        GPIO102_nPCE_1,
 118        GPIO104_PSKTSEL,
 119
 120        /* MultiMediaCard */
 121        GPIO32_MMC_CLK,
 122        GPIO92_MMC_DAT_0,
 123        GPIO109_MMC_DAT_1,
 124        GPIO110_MMC_DAT_2,
 125        GPIO111_MMC_DAT_3,
 126        GPIO112_MMC_CMD,
 127        GPIO12_GPIO,                    /* TRIZEPS4_MMC_IRQ */
 128
 129        /* USB OHCI */
 130        GPIO88_USBH1_PWR,               /* USBHPWR1 */
 131        GPIO89_USBH1_PEN,               /* USBHPEN1 */
 132
 133        /* I2C */
 134        GPIO117_I2C_SCL,
 135        GPIO118_I2C_SDA,
 136};
 137
 138static unsigned long trizeps4wl_pin_config[] __initdata = {
 139        /* SSP 2 */
 140        GPIO14_SSP2_SFRM,
 141        GPIO19_SSP2_SCLK,
 142        GPIO53_GPIO,                    /* TRIZEPS4_SPI_IRQ */
 143        GPIO86_SSP2_RXD,
 144        GPIO87_SSP2_TXD,
 145};
 146
 147/****************************************************************************
 148 * ONBOARD FLASH
 149 ****************************************************************************/
 150static struct mtd_partition trizeps4_partitions[] = {
 151        {
 152                .name =         "Bootloader",
 153                .offset =       0x00000000,
 154                .size =         0x00040000,
 155                .mask_flags =   MTD_WRITEABLE  /* force read-only */
 156        }, {
 157                .name =         "Backup",
 158                .offset =       0x00040000,
 159                .size =         0x00040000,
 160        }, {
 161                .name =         "Image",
 162                .offset =       0x00080000,
 163                .size =         0x01080000,
 164        }, {
 165                .name =         "IPSM",
 166                .offset =       0x01100000,
 167                .size =         0x00e00000,
 168        }, {
 169                .name =         "Registry",
 170                .offset =       0x01f00000,
 171                .size =         MTDPART_SIZ_FULL,
 172        }
 173};
 174
 175static struct physmap_flash_data trizeps4_flash_data[] = {
 176        {
 177                .width          = 4,                    /* bankwidth in bytes */
 178                .parts          = trizeps4_partitions,
 179                .nr_parts       = ARRAY_SIZE(trizeps4_partitions)
 180        }
 181};
 182
 183static struct resource flash_resource = {
 184        .start  = PXA_CS0_PHYS,
 185        .end    = PXA_CS0_PHYS + SZ_32M - 1,
 186        .flags  = IORESOURCE_MEM,
 187};
 188
 189static struct platform_device flash_device = {
 190        .name           = "physmap-flash",
 191        .id             = 0,
 192        .dev = {
 193                .platform_data = trizeps4_flash_data,
 194        },
 195        .resource = &flash_resource,
 196        .num_resources = 1,
 197};
 198
 199/****************************************************************************
 200 * DAVICOM DM9000 Ethernet
 201 ****************************************************************************/
 202static struct resource dm9000_resources[] = {
 203        [0] = {
 204                .start  = TRIZEPS4_ETH_PHYS+0x300,
 205                .end    = TRIZEPS4_ETH_PHYS+0x400-1,
 206                .flags  = IORESOURCE_MEM,
 207        },
 208        [1] = {
 209                .start  = TRIZEPS4_ETH_PHYS+0x8300,
 210                .end    = TRIZEPS4_ETH_PHYS+0x8400-1,
 211                .flags  = IORESOURCE_MEM,
 212        },
 213        [2] = {
 214                .start  = TRIZEPS4_ETH_IRQ,
 215                .end    = TRIZEPS4_ETH_IRQ,
 216                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 217        },
 218};
 219
 220static struct dm9000_plat_data tri_dm9000_platdata = {
 221        .flags          = DM9000_PLATF_32BITONLY,
 222};
 223
 224static struct platform_device dm9000_device = {
 225        .name           = "dm9000",
 226        .id             = -1,
 227        .num_resources  = ARRAY_SIZE(dm9000_resources),
 228        .resource       = dm9000_resources,
 229        .dev            = {
 230                .platform_data = &tri_dm9000_platdata,
 231        }
 232};
 233
 234/****************************************************************************
 235 * LED's on GPIO pins of PXA
 236 ****************************************************************************/
 237static struct gpio_led trizeps4_led[] = {
 238#ifdef STATUS_LEDS_ON_STUART_PINS
 239        {
 240                .name = "led0:orange:heartbeat",        /* */
 241                .default_trigger = "heartbeat",
 242                .gpio = GPIO_HEARTBEAT_LED,
 243                .active_low = 1,
 244        },
 245        {
 246                .name = "led1:yellow:cpubusy",          /* */
 247                .default_trigger = "cpu-busy",
 248                .gpio = GPIO_SYS_BUSY_LED,
 249                .active_low = 1,
 250        },
 251#endif
 252};
 253
 254static struct gpio_led_platform_data trizeps4_led_data = {
 255        .leds           = trizeps4_led,
 256        .num_leds       = ARRAY_SIZE(trizeps4_led),
 257};
 258
 259static struct platform_device leds_devices = {
 260        .name           = "leds-gpio",
 261        .id             = -1,
 262        .dev            = {
 263                .platform_data  = &trizeps4_led_data,
 264        },
 265};
 266
 267static struct platform_device *trizeps4_devices[] __initdata = {
 268        &flash_device,
 269        &dm9000_device,
 270        &leds_devices,
 271};
 272
 273static struct platform_device *trizeps4wl_devices[] __initdata = {
 274        &flash_device,
 275        &leds_devices,
 276};
 277
 278static short trizeps_conxs_bcr;
 279
 280/* PCCARD power switching supports only 3,3V */
 281void board_pcmcia_power(int power)
 282{
 283        if (power) {
 284                /* switch power on, put in reset and enable buffers */
 285                trizeps_conxs_bcr |= power;
 286                trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
 287                trizeps_conxs_bcr &= ~ConXS_BCR_CF_BUF_EN;
 288                BCR_writew(trizeps_conxs_bcr);
 289                /* wait a little */
 290                udelay(2000);
 291                /* take reset away */
 292                trizeps_conxs_bcr &= ~ConXS_BCR_CF_RESET;
 293                BCR_writew(trizeps_conxs_bcr);
 294                udelay(2000);
 295        } else {
 296                /* put in reset */
 297                trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
 298                BCR_writew(trizeps_conxs_bcr);
 299                udelay(1000);
 300                /* switch power off */
 301                trizeps_conxs_bcr &= ~0xf;
 302                BCR_writew(trizeps_conxs_bcr);
 303        }
 304        pr_debug("%s: o%s 0x%x\n", __func__, power ? "n" : "ff",
 305                        trizeps_conxs_bcr);
 306}
 307EXPORT_SYMBOL(board_pcmcia_power);
 308
 309/* backlight power switching for LCD panel */
 310static void board_backlight_power(int on)
 311{
 312        if (on)
 313                trizeps_conxs_bcr |= ConXS_BCR_L_DISP;
 314        else
 315                trizeps_conxs_bcr &= ~ConXS_BCR_L_DISP;
 316
 317        pr_debug("%s: o%s 0x%x\n", __func__, on ? "n" : "ff",
 318                        trizeps_conxs_bcr);
 319        BCR_writew(trizeps_conxs_bcr);
 320}
 321
 322/* a I2C based RTC is known on CONXS board */
 323static struct i2c_board_info trizeps4_i2c_devices[] __initdata = {
 324        { I2C_BOARD_INFO("rtc-pcf8593", 0x51) }
 325};
 326
 327/****************************************************************************
 328 * MMC card slot external to module
 329 ****************************************************************************/
 330static int trizeps4_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 331                void *data)
 332{
 333        int err;
 334
 335        err = request_irq(TRIZEPS4_MMC_IRQ, mci_detect_int,
 336                          IRQF_TRIGGER_RISING, "MMC card detect", data);
 337        if (err) {
 338                printk(KERN_ERR "trizeps4_mci_init: MMC/SD: can't request"
 339                                                "MMC card detect IRQ\n");
 340                return -1;
 341        }
 342        return 0;
 343}
 344
 345static void trizeps4_mci_exit(struct device *dev, void *data)
 346{
 347        free_irq(TRIZEPS4_MMC_IRQ, data);
 348}
 349
 350static struct pxamci_platform_data trizeps4_mci_platform_data = {
 351        .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 352        .detect_delay_ms= 10,
 353        .init           = trizeps4_mci_init,
 354        .exit           = trizeps4_mci_exit,
 355        .get_ro         = NULL, /* write-protection not supported */
 356        .setpower       = NULL, /* power-switching not supported */
 357        .gpio_card_detect = -1,
 358        .gpio_card_ro   = -1,
 359        .gpio_power     = -1,
 360};
 361
 362/****************************************************************************
 363 * IRDA mode switching on stuart
 364 ****************************************************************************/
 365#ifndef STATUS_LEDS_ON_STUART_PINS
 366static short trizeps_conxs_ircr;
 367
 368static int trizeps4_irda_startup(struct device *dev)
 369{
 370        trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
 371        IRCR_writew(trizeps_conxs_ircr);
 372        return 0;
 373}
 374
 375static void trizeps4_irda_shutdown(struct device *dev)
 376{
 377        trizeps_conxs_ircr |= ConXS_IRCR_SD;
 378        IRCR_writew(trizeps_conxs_ircr);
 379}
 380
 381static void trizeps4_irda_transceiver_mode(struct device *dev, int mode)
 382{
 383        unsigned long flags;
 384
 385        local_irq_save(flags);
 386        /* Switch mode */
 387        if (mode & IR_SIRMODE)
 388                trizeps_conxs_ircr &= ~ConXS_IRCR_MODE; /* Slow mode */
 389        else if (mode & IR_FIRMODE)
 390                trizeps_conxs_ircr |= ConXS_IRCR_MODE;  /* Fast mode */
 391
 392        /* Switch power */
 393        if (mode & IR_OFF)
 394                trizeps_conxs_ircr |= ConXS_IRCR_SD;
 395        else
 396                trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
 397
 398        IRCR_writew(trizeps_conxs_ircr);
 399        local_irq_restore(flags);
 400
 401        pxa2xx_transceiver_mode(dev, mode);
 402}
 403
 404static struct pxaficp_platform_data trizeps4_ficp_platform_data = {
 405        .gpio_pwdown            = -1,
 406        .transceiver_cap        = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 407        .transceiver_mode       = trizeps4_irda_transceiver_mode,
 408        .startup                = trizeps4_irda_startup,
 409        .shutdown               = trizeps4_irda_shutdown,
 410};
 411#endif
 412
 413/****************************************************************************
 414 * OHCI USB port
 415 ****************************************************************************/
 416static struct pxaohci_platform_data trizeps4_ohci_platform_data = {
 417        .port_mode      = PMM_PERPORT_MODE,
 418        .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 419};
 420
 421static struct map_desc trizeps4_io_desc[] __initdata = {
 422        {       /* ConXS CFSR */
 423                .virtual        = TRIZEPS4_CFSR_VIRT,
 424                .pfn            = __phys_to_pfn(TRIZEPS4_CFSR_PHYS),
 425                .length         = 0x00001000,
 426                .type           = MT_DEVICE
 427        },
 428        {       /* ConXS BCR */
 429                .virtual        = TRIZEPS4_BOCR_VIRT,
 430                .pfn            = __phys_to_pfn(TRIZEPS4_BOCR_PHYS),
 431                .length         = 0x00001000,
 432                .type           = MT_DEVICE
 433        },
 434        {       /* ConXS IRCR */
 435                .virtual        = TRIZEPS4_IRCR_VIRT,
 436                .pfn            = __phys_to_pfn(TRIZEPS4_IRCR_PHYS),
 437                .length         = 0x00001000,
 438                .type           = MT_DEVICE
 439        },
 440        {       /* ConXS DCR */
 441                .virtual        = TRIZEPS4_DICR_VIRT,
 442                .pfn            = __phys_to_pfn(TRIZEPS4_DICR_PHYS),
 443                .length         = 0x00001000,
 444                .type           = MT_DEVICE
 445        },
 446        {       /* ConXS UPSR */
 447                .virtual        = TRIZEPS4_UPSR_VIRT,
 448                .pfn            = __phys_to_pfn(TRIZEPS4_UPSR_PHYS),
 449                .length         = 0x00001000,
 450                .type           = MT_DEVICE
 451        }
 452};
 453
 454static struct pxafb_mode_info sharp_lcd_mode = {
 455        .pixclock       = 78000,
 456        .xres           = 640,
 457        .yres           = 480,
 458        .bpp            = 8,
 459        .hsync_len      = 4,
 460        .left_margin    = 4,
 461        .right_margin   = 4,
 462        .vsync_len      = 2,
 463        .upper_margin   = 0,
 464        .lower_margin   = 0,
 465        .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 466        .cmap_greyscale = 0,
 467};
 468
 469static struct pxafb_mach_info sharp_lcd = {
 470        .modes          = &sharp_lcd_mode,
 471        .num_modes      = 1,
 472        .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL,
 473        .cmap_inverse   = 0,
 474        .cmap_static    = 0,
 475        .pxafb_backlight_power = board_backlight_power,
 476};
 477
 478static struct pxafb_mode_info toshiba_lcd_mode = {
 479        .pixclock       = 39720,
 480        .xres           = 640,
 481        .yres           = 480,
 482        .bpp            = 8,
 483        .hsync_len      = 63,
 484        .left_margin    = 12,
 485        .right_margin   = 12,
 486        .vsync_len      = 4,
 487        .upper_margin   = 32,
 488        .lower_margin   = 10,
 489        .sync           = 0,
 490        .cmap_greyscale = 0,
 491};
 492
 493static struct pxafb_mach_info toshiba_lcd = {
 494        .modes          = &toshiba_lcd_mode,
 495        .num_modes      = 1,
 496        .lcd_conn       = (LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL),
 497        .cmap_inverse   = 0,
 498        .cmap_static    = 0,
 499        .pxafb_backlight_power = board_backlight_power,
 500};
 501
 502static void __init trizeps4_init(void)
 503{
 504        pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4_pin_config));
 505        if (machine_is_trizeps4wl()) {
 506                pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4wl_pin_config));
 507                platform_add_devices(trizeps4wl_devices,
 508                                        ARRAY_SIZE(trizeps4wl_devices));
 509        } else {
 510                platform_add_devices(trizeps4_devices,
 511                                        ARRAY_SIZE(trizeps4_devices));
 512        }
 513
 514        pxa_set_ffuart_info(NULL);
 515        pxa_set_btuart_info(NULL);
 516        pxa_set_stuart_info(NULL);
 517
 518        if (0)  /* dont know how to determine LCD */
 519                pxa_set_fb_info(NULL, &sharp_lcd);
 520        else
 521                pxa_set_fb_info(NULL, &toshiba_lcd);
 522
 523        pxa_set_mci_info(&trizeps4_mci_platform_data);
 524#ifndef STATUS_LEDS_ON_STUART_PINS
 525        pxa_set_ficp_info(&trizeps4_ficp_platform_data);
 526#endif
 527        pxa_set_ohci_info(&trizeps4_ohci_platform_data);
 528        pxa_set_ac97_info(NULL);
 529        pxa_set_i2c_info(NULL);
 530        i2c_register_board_info(0, trizeps4_i2c_devices,
 531                                        ARRAY_SIZE(trizeps4_i2c_devices));
 532
 533        /* this is the reset value */
 534        trizeps_conxs_bcr = 0x00A0;
 535
 536        BCR_writew(trizeps_conxs_bcr);
 537        board_backlight_power(1);
 538
 539        regulator_has_full_constraints();
 540}
 541
 542static void __init trizeps4_map_io(void)
 543{
 544        pxa27x_map_io();
 545        iotable_init(trizeps4_io_desc, ARRAY_SIZE(trizeps4_io_desc));
 546
 547        if ((__raw_readl(MSC0) & 0x8) && (__raw_readl(BOOT_DEF) & 0x1)) {
 548                /* if flash is 16 bit wide its a Trizeps4 WL */
 549                __machine_arch_type = MACH_TYPE_TRIZEPS4WL;
 550                trizeps4_flash_data[0].width = 2;
 551        } else {
 552                /* if flash is 32 bit wide its a Trizeps4 */
 553                __machine_arch_type = MACH_TYPE_TRIZEPS4;
 554                trizeps4_flash_data[0].width = 4;
 555        }
 556}
 557
 558MACHINE_START(TRIZEPS4, "Keith und Koep Trizeps IV module")
 559        /* MAINTAINER("Jürgen Schindele") */
 560        .atag_offset    = 0x100,
 561        .init_machine   = trizeps4_init,
 562        .map_io         = trizeps4_map_io,
 563        .nr_irqs        = PXA_NR_IRQS,
 564        .init_irq       = pxa27x_init_irq,
 565        .handle_irq     = pxa27x_handle_irq,
 566        .init_time      = pxa_timer_init,
 567        .restart        = pxa_restart,
 568MACHINE_END
 569
 570MACHINE_START(TRIZEPS4WL, "Keith und Koep Trizeps IV-WL module")
 571        /* MAINTAINER("Jürgen Schindele") */
 572        .atag_offset    = 0x100,
 573        .init_machine   = trizeps4_init,
 574        .map_io         = trizeps4_map_io,
 575        .nr_irqs        = PXA_NR_IRQS,
 576        .init_irq       = pxa27x_init_irq,
 577        .handle_irq     = pxa27x_handle_irq,
 578        .init_time      = pxa_timer_init,
 579        .restart        = pxa_restart,
 580MACHINE_END
 581