linux/arch/arm/mach-pxa/balloon3.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  linux/arch/arm/mach-pxa/balloon3.c
   4 *
   5 *  Support for Balloonboard.org Balloon3 board.
   6 *
   7 *  Author:     Nick Bane, Wookey, Jonathan McDowell
   8 *  Created:    June, 2006
   9 *  Copyright:  Toby Churchill Ltd
  10 *  Derived from mainstone.c, by Nico Pitre
  11 */
  12
  13#include <linux/export.h>
  14#include <linux/init.h>
  15#include <linux/platform_device.h>
  16#include <linux/interrupt.h>
  17#include <linux/leds.h>
  18#include <linux/sched.h>
  19#include <linux/bitops.h>
  20#include <linux/fb.h>
  21#include <linux/gpio.h>
  22#include <linux/ioport.h>
  23#include <linux/ucb1400.h>
  24#include <linux/mtd/mtd.h>
  25#include <linux/types.h>
  26#include <linux/platform_data/pcf857x.h>
  27#include <linux/platform_data/i2c-pxa.h>
  28#include <linux/mtd/platnand.h>
  29#include <linux/mtd/physmap.h>
  30#include <linux/regulator/max1586.h>
  31
  32#include <asm/setup.h>
  33#include <asm/mach-types.h>
  34#include <asm/irq.h>
  35#include <linux/sizes.h>
  36
  37#include <asm/mach/arch.h>
  38#include <asm/mach/map.h>
  39#include <asm/mach/irq.h>
  40#include <asm/mach/flash.h>
  41
  42#include "pxa27x.h"
  43#include <mach/balloon3.h>
  44#include <mach/audio.h>
  45#include <linux/platform_data/video-pxafb.h>
  46#include <linux/platform_data/mmc-pxamci.h>
  47#include "udc.h"
  48#include "pxa27x-udc.h"
  49#include <linux/platform_data/irda-pxaficp.h>
  50#include <linux/platform_data/usb-ohci-pxa27x.h>
  51
  52#include "generic.h"
  53#include "devices.h"
  54
  55/******************************************************************************
  56 * Pin configuration
  57 ******************************************************************************/
  58static unsigned long balloon3_pin_config[] __initdata = {
  59        /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
  60        GPIO42_BTUART_RXD,
  61        GPIO43_BTUART_TXD,
  62        GPIO44_BTUART_CTS,
  63        GPIO45_BTUART_RTS,
  64
  65        /* Reset, configured as GPIO wakeup source */
  66        GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  67};
  68
  69/******************************************************************************
  70 * Compatibility: Parameter parsing
  71 ******************************************************************************/
  72static unsigned long balloon3_irq_enabled;
  73
  74static unsigned long balloon3_features_present =
  75                (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
  76                (1 << BALLOON3_FEATURE_AUDIO) |
  77                (1 << BALLOON3_FEATURE_TOPPOLY);
  78
  79int balloon3_has(enum balloon3_features feature)
  80{
  81        return (balloon3_features_present & (1 << feature)) ? 1 : 0;
  82}
  83EXPORT_SYMBOL_GPL(balloon3_has);
  84
  85int __init parse_balloon3_features(char *arg)
  86{
  87        if (!arg)
  88                return 0;
  89
  90        return kstrtoul(arg, 0, &balloon3_features_present);
  91}
  92early_param("balloon3_features", parse_balloon3_features);
  93
  94/******************************************************************************
  95 * Compact Flash slot
  96 ******************************************************************************/
  97#if     defined(CONFIG_PCMCIA_PXA2XX) || defined(CONFIG_PCMCIA_PXA2XX_MODULE)
  98static unsigned long balloon3_cf_pin_config[] __initdata = {
  99        GPIO48_nPOE,
 100        GPIO49_nPWE,
 101        GPIO50_nPIOR,
 102        GPIO51_nPIOW,
 103        GPIO85_nPCE_1,
 104        GPIO54_nPCE_2,
 105        GPIO79_PSKTSEL,
 106        GPIO55_nPREG,
 107        GPIO56_nPWAIT,
 108        GPIO57_nIOIS16,
 109};
 110
 111static void __init balloon3_cf_init(void)
 112{
 113        if (!balloon3_has(BALLOON3_FEATURE_CF))
 114                return;
 115
 116        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_cf_pin_config));
 117}
 118#else
 119static inline void balloon3_cf_init(void) {}
 120#endif
 121
 122/******************************************************************************
 123 * NOR Flash
 124 ******************************************************************************/
 125#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 126static struct mtd_partition balloon3_nor_partitions[] = {
 127        {
 128                .name           = "Flash",
 129                .offset         = 0x00000000,
 130                .size           = MTDPART_SIZ_FULL,
 131        }
 132};
 133
 134static struct physmap_flash_data balloon3_flash_data[] = {
 135        {
 136                .width          = 2,    /* bankwidth in bytes */
 137                .parts          = balloon3_nor_partitions,
 138                .nr_parts       = ARRAY_SIZE(balloon3_nor_partitions)
 139        }
 140};
 141
 142static struct resource balloon3_flash_resource = {
 143        .start  = PXA_CS0_PHYS,
 144        .end    = PXA_CS0_PHYS + SZ_64M - 1,
 145        .flags  = IORESOURCE_MEM,
 146};
 147
 148static struct platform_device balloon3_flash = {
 149        .name           = "physmap-flash",
 150        .id             = 0,
 151        .resource       = &balloon3_flash_resource,
 152        .num_resources  = 1,
 153        .dev            = {
 154                .platform_data = balloon3_flash_data,
 155        },
 156};
 157static void __init balloon3_nor_init(void)
 158{
 159        platform_device_register(&balloon3_flash);
 160}
 161#else
 162static inline void balloon3_nor_init(void) {}
 163#endif
 164
 165/******************************************************************************
 166 * Audio and Touchscreen
 167 ******************************************************************************/
 168#if     defined(CONFIG_TOUCHSCREEN_UCB1400) || \
 169        defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 170static unsigned long balloon3_ac97_pin_config[] __initdata = {
 171        GPIO28_AC97_BITCLK,
 172        GPIO29_AC97_SDATA_IN_0,
 173        GPIO30_AC97_SDATA_OUT,
 174        GPIO31_AC97_SYNC,
 175        GPIO113_AC97_nRESET,
 176        GPIO95_GPIO,
 177};
 178
 179static struct ucb1400_pdata vpac270_ucb1400_pdata = {
 180        .irq            = PXA_GPIO_TO_IRQ(BALLOON3_GPIO_CODEC_IRQ),
 181};
 182
 183
 184static struct platform_device balloon3_ucb1400_device = {
 185        .name           = "ucb1400_core",
 186        .id             = -1,
 187        .dev            = {
 188                .platform_data = &vpac270_ucb1400_pdata,
 189        },
 190};
 191
 192static void __init balloon3_ts_init(void)
 193{
 194        if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
 195                return;
 196
 197        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config));
 198        pxa_set_ac97_info(NULL);
 199        platform_device_register(&balloon3_ucb1400_device);
 200}
 201#else
 202static inline void balloon3_ts_init(void) {}
 203#endif
 204
 205/******************************************************************************
 206 * Framebuffer
 207 ******************************************************************************/
 208#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 209static unsigned long balloon3_lcd_pin_config[] __initdata = {
 210        GPIOxx_LCD_TFT_16BPP,
 211        GPIO99_GPIO,
 212};
 213
 214static struct pxafb_mode_info balloon3_lcd_modes[] = {
 215        {
 216                .pixclock               = 38000,
 217                .xres                   = 480,
 218                .yres                   = 640,
 219                .bpp                    = 16,
 220                .hsync_len              = 8,
 221                .left_margin            = 8,
 222                .right_margin           = 8,
 223                .vsync_len              = 2,
 224                .upper_margin           = 4,
 225                .lower_margin           = 5,
 226                .sync                   = 0,
 227        },
 228};
 229
 230static struct pxafb_mach_info balloon3_lcd_screen = {
 231        .modes                  = balloon3_lcd_modes,
 232        .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
 233        .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 234};
 235
 236static void balloon3_backlight_power(int on)
 237{
 238        gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
 239}
 240
 241static void __init balloon3_lcd_init(void)
 242{
 243        int ret;
 244
 245        if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
 246                return;
 247
 248        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
 249
 250        ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
 251        if (ret) {
 252                pr_err("Requesting BKL-ON GPIO failed!\n");
 253                goto err;
 254        }
 255
 256        ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
 257        if (ret) {
 258                pr_err("Setting BKL-ON GPIO direction failed!\n");
 259                goto err2;
 260        }
 261
 262        balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
 263        pxa_set_fb_info(NULL, &balloon3_lcd_screen);
 264        return;
 265
 266err2:
 267        gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
 268err:
 269        return;
 270}
 271#else
 272static inline void balloon3_lcd_init(void) {}
 273#endif
 274
 275/******************************************************************************
 276 * SD/MMC card controller
 277 ******************************************************************************/
 278#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 279static unsigned long balloon3_mmc_pin_config[] __initdata = {
 280        GPIO32_MMC_CLK,
 281        GPIO92_MMC_DAT_0,
 282        GPIO109_MMC_DAT_1,
 283        GPIO110_MMC_DAT_2,
 284        GPIO111_MMC_DAT_3,
 285        GPIO112_MMC_CMD,
 286};
 287
 288static struct pxamci_platform_data balloon3_mci_platform_data = {
 289        .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 290        .detect_delay_ms        = 200,
 291};
 292
 293static void __init balloon3_mmc_init(void)
 294{
 295        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
 296        pxa_set_mci_info(&balloon3_mci_platform_data);
 297}
 298#else
 299static inline void balloon3_mmc_init(void) {}
 300#endif
 301
 302/******************************************************************************
 303 * USB Gadget
 304 ******************************************************************************/
 305#if defined(CONFIG_USB_PXA27X)||defined(CONFIG_USB_PXA27X_MODULE)
 306static void balloon3_udc_command(int cmd)
 307{
 308        if (cmd == PXA2XX_UDC_CMD_CONNECT)
 309                UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
 310        else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
 311                UP2OCR &= ~UP2OCR_DPPUE;
 312}
 313
 314static int balloon3_udc_is_connected(void)
 315{
 316        return 1;
 317}
 318
 319static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
 320        .udc_command            = balloon3_udc_command,
 321        .udc_is_connected       = balloon3_udc_is_connected,
 322        .gpio_pullup            = -1,
 323};
 324
 325static void __init balloon3_udc_init(void)
 326{
 327        pxa_set_udc_info(&balloon3_udc_info);
 328}
 329#else
 330static inline void balloon3_udc_init(void) {}
 331#endif
 332
 333/******************************************************************************
 334 * IrDA
 335 ******************************************************************************/
 336#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
 337static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 338        .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
 339};
 340
 341static void __init balloon3_irda_init(void)
 342{
 343        pxa_set_ficp_info(&balloon3_ficp_platform_data);
 344}
 345#else
 346static inline void balloon3_irda_init(void) {}
 347#endif
 348
 349/******************************************************************************
 350 * USB Host
 351 ******************************************************************************/
 352#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 353static unsigned long balloon3_uhc_pin_config[] __initdata = {
 354        GPIO88_USBH1_PWR,
 355        GPIO89_USBH1_PEN,
 356};
 357
 358static struct pxaohci_platform_data balloon3_ohci_info = {
 359        .port_mode      = PMM_PERPORT_MODE,
 360        .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 361};
 362
 363static void __init balloon3_uhc_init(void)
 364{
 365        if (!balloon3_has(BALLOON3_FEATURE_OHCI))
 366                return;
 367        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
 368        pxa_set_ohci_info(&balloon3_ohci_info);
 369}
 370#else
 371static inline void balloon3_uhc_init(void) {}
 372#endif
 373
 374/******************************************************************************
 375 * LEDs
 376 ******************************************************************************/
 377#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 378static unsigned long balloon3_led_pin_config[] __initdata = {
 379        GPIO9_GPIO,     /* NAND activity LED */
 380        GPIO10_GPIO,    /* Heartbeat LED */
 381};
 382
 383struct gpio_led balloon3_gpio_leds[] = {
 384        {
 385                .name                   = "balloon3:green:idle",
 386                .default_trigger        = "heartbeat",
 387                .gpio                   = BALLOON3_GPIO_LED_IDLE,
 388                .active_low             = 1,
 389        }, {
 390                .name                   = "balloon3:green:nand",
 391                .default_trigger        = "nand-disk",
 392                .gpio                   = BALLOON3_GPIO_LED_NAND,
 393                .active_low             = 1,
 394        },
 395};
 396
 397static struct gpio_led_platform_data balloon3_gpio_led_info = {
 398        .leds           = balloon3_gpio_leds,
 399        .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 400};
 401
 402static struct platform_device balloon3_leds = {
 403        .name   = "leds-gpio",
 404        .id     = 0,
 405        .dev    = {
 406                .platform_data  = &balloon3_gpio_led_info,
 407        }
 408};
 409
 410struct gpio_led balloon3_pcf_gpio_leds[] = {
 411        {
 412                .name                   = "balloon3:green:led0",
 413                .gpio                   = BALLOON3_PCF_GPIO_LED0,
 414                .active_low             = 1,
 415        }, {
 416                .name                   = "balloon3:green:led1",
 417                .gpio                   = BALLOON3_PCF_GPIO_LED1,
 418                .active_low             = 1,
 419        }, {
 420                .name                   = "balloon3:orange:led2",
 421                .gpio                   = BALLOON3_PCF_GPIO_LED2,
 422                .active_low             = 1,
 423        }, {
 424                .name                   = "balloon3:orange:led3",
 425                .gpio                   = BALLOON3_PCF_GPIO_LED3,
 426                .active_low             = 1,
 427        }, {
 428                .name                   = "balloon3:orange:led4",
 429                .gpio                   = BALLOON3_PCF_GPIO_LED4,
 430                .active_low             = 1,
 431        }, {
 432                .name                   = "balloon3:orange:led5",
 433                .gpio                   = BALLOON3_PCF_GPIO_LED5,
 434                .active_low             = 1,
 435        }, {
 436                .name                   = "balloon3:red:led6",
 437                .gpio                   = BALLOON3_PCF_GPIO_LED6,
 438                .active_low             = 1,
 439        }, {
 440                .name                   = "balloon3:red:led7",
 441                .gpio                   = BALLOON3_PCF_GPIO_LED7,
 442                .active_low             = 1,
 443        },
 444};
 445
 446static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
 447        .leds           = balloon3_pcf_gpio_leds,
 448        .num_leds       = ARRAY_SIZE(balloon3_pcf_gpio_leds),
 449};
 450
 451static struct platform_device balloon3_pcf_leds = {
 452        .name   = "leds-gpio",
 453        .id     = 1,
 454        .dev    = {
 455                .platform_data  = &balloon3_pcf_gpio_led_info,
 456        }
 457};
 458
 459static void __init balloon3_leds_init(void)
 460{
 461        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
 462        platform_device_register(&balloon3_leds);
 463        platform_device_register(&balloon3_pcf_leds);
 464}
 465#else
 466static inline void balloon3_leds_init(void) {}
 467#endif
 468
 469/******************************************************************************
 470 * FPGA IRQ
 471 ******************************************************************************/
 472static void balloon3_mask_irq(struct irq_data *d)
 473{
 474        int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
 475        balloon3_irq_enabled &= ~(1 << balloon3_irq);
 476        __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 477}
 478
 479static void balloon3_unmask_irq(struct irq_data *d)
 480{
 481        int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
 482        balloon3_irq_enabled |= (1 << balloon3_irq);
 483        __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 484}
 485
 486static struct irq_chip balloon3_irq_chip = {
 487        .name           = "FPGA",
 488        .irq_ack        = balloon3_mask_irq,
 489        .irq_mask       = balloon3_mask_irq,
 490        .irq_unmask     = balloon3_unmask_irq,
 491};
 492
 493static void balloon3_irq_handler(struct irq_desc *desc)
 494{
 495        unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 496                                        balloon3_irq_enabled;
 497        do {
 498                struct irq_data *d = irq_desc_get_irq_data(desc);
 499                struct irq_chip *chip = irq_desc_get_chip(desc);
 500                unsigned int irq;
 501
 502                /* clear useless edge notification */
 503                if (chip->irq_ack)
 504                        chip->irq_ack(d);
 505
 506                while (pending) {
 507                        irq = BALLOON3_IRQ(0) + __ffs(pending);
 508                        generic_handle_irq(irq);
 509                        pending &= pending - 1;
 510                }
 511                pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 512                                balloon3_irq_enabled;
 513        } while (pending);
 514}
 515
 516static void __init balloon3_init_irq(void)
 517{
 518        int irq;
 519
 520        pxa27x_init_irq();
 521        /* setup extra Balloon3 irqs */
 522        for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
 523                irq_set_chip_and_handler(irq, &balloon3_irq_chip,
 524                                         handle_level_irq);
 525                irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 526        }
 527
 528        irq_set_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 529        irq_set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
 530
 531        pr_debug("%s: chained handler installed - irq %d automatically "
 532                "enabled\n", __func__, BALLOON3_AUX_NIRQ);
 533}
 534
 535/******************************************************************************
 536 * GPIO expander
 537 ******************************************************************************/
 538#if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
 539static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
 540        .gpio_base      = BALLOON3_PCF_GPIO_BASE,
 541        .n_latch        = 0,
 542        .setup          = NULL,
 543        .teardown       = NULL,
 544        .context        = NULL,
 545};
 546
 547static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
 548        {
 549                I2C_BOARD_INFO("pcf8574a", 0x38),
 550                .platform_data  = &balloon3_pcf857x_pdata,
 551        },
 552};
 553
 554static void __init balloon3_i2c_init(void)
 555{
 556        pxa_set_i2c_info(NULL);
 557        i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
 558}
 559#else
 560static inline void balloon3_i2c_init(void) {}
 561#endif
 562
 563/******************************************************************************
 564 * NAND
 565 ******************************************************************************/
 566#if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 567static void balloon3_nand_cmd_ctl(struct nand_chip *this, int cmd,
 568                                  unsigned int ctrl)
 569{
 570        uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
 571
 572        if (ctrl & NAND_CTRL_CHANGE) {
 573                if (ctrl & NAND_CLE)
 574                        balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
 575                else
 576                        balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
 577
 578                if (ctrl & NAND_ALE)
 579                        balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
 580                else
 581                        balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
 582
 583                if (balloon3_ctl_clr)
 584                        __raw_writel(balloon3_ctl_clr,
 585                                BALLOON3_NAND_CONTROL_REG);
 586                if (balloon3_ctl_set)
 587                        __raw_writel(balloon3_ctl_set,
 588                                BALLOON3_NAND_CONTROL_REG +
 589                                BALLOON3_FPGA_SETnCLR);
 590        }
 591
 592        if (cmd != NAND_CMD_NONE)
 593                writeb(cmd, this->legacy.IO_ADDR_W);
 594}
 595
 596static void balloon3_nand_select_chip(struct nand_chip *this, int chip)
 597{
 598        if (chip < 0 || chip > 3)
 599                return;
 600
 601        /* Assert all nCE lines */
 602        __raw_writew(
 603                BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 604                BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
 605                BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 606
 607        /* Deassert correct nCE line */
 608        __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
 609                BALLOON3_NAND_CONTROL_REG);
 610}
 611
 612static int balloon3_nand_dev_ready(struct nand_chip *this)
 613{
 614        return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
 615}
 616
 617static int balloon3_nand_probe(struct platform_device *pdev)
 618{
 619        uint16_t ver;
 620        int ret;
 621
 622        __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
 623                BALLOON3_NAND_CONTROL2_REG + BALLOON3_FPGA_SETnCLR);
 624
 625        ver = __raw_readw(BALLOON3_FPGA_VER);
 626        if (ver < 0x4f08)
 627                pr_warn("The FPGA code, version 0x%04x, is too old. "
 628                        "NAND support might be broken in this version!", ver);
 629
 630        /* Power up the NAND chips */
 631        ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
 632        if (ret)
 633                goto err1;
 634
 635        ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
 636        if (ret)
 637                goto err2;
 638
 639        gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
 640
 641        /* Deassert all nCE lines and write protect line */
 642        __raw_writel(
 643                BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 644                BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
 645                BALLOON3_NAND_CONTROL_FLWP,
 646                BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 647        return 0;
 648
 649err2:
 650        gpio_free(BALLOON3_GPIO_RUN_NAND);
 651err1:
 652        return ret;
 653}
 654
 655static void balloon3_nand_remove(struct platform_device *pdev)
 656{
 657        /* Power down the NAND chips */
 658        gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
 659        gpio_free(BALLOON3_GPIO_RUN_NAND);
 660}
 661
 662static struct mtd_partition balloon3_partition_info[] = {
 663        [0] = {
 664                .name   = "Boot",
 665                .offset = 0,
 666                .size   = SZ_4M,
 667        },
 668        [1] = {
 669                .name   = "RootFS",
 670                .offset = MTDPART_OFS_APPEND,
 671                .size   = MTDPART_SIZ_FULL
 672        },
 673};
 674
 675struct platform_nand_data balloon3_nand_pdata = {
 676        .chip = {
 677                .nr_chips       = 4,
 678                .chip_offset    = 0,
 679                .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
 680                .partitions     = balloon3_partition_info,
 681                .chip_delay     = 50,
 682        },
 683        .ctrl = {
 684                .dev_ready      = balloon3_nand_dev_ready,
 685                .select_chip    = balloon3_nand_select_chip,
 686                .cmd_ctrl       = balloon3_nand_cmd_ctl,
 687                .probe          = balloon3_nand_probe,
 688                .remove         = balloon3_nand_remove,
 689        },
 690};
 691
 692static struct resource balloon3_nand_resource[] = {
 693        [0] = {
 694                .start = BALLOON3_NAND_BASE,
 695                .end   = BALLOON3_NAND_BASE + 0x4,
 696                .flags = IORESOURCE_MEM,
 697        },
 698};
 699
 700static struct platform_device balloon3_nand = {
 701        .name           = "gen_nand",
 702        .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
 703        .resource       = balloon3_nand_resource,
 704        .id             = -1,
 705        .dev            = {
 706                .platform_data = &balloon3_nand_pdata,
 707        }
 708};
 709
 710static void __init balloon3_nand_init(void)
 711{
 712        platform_device_register(&balloon3_nand);
 713}
 714#else
 715static inline void balloon3_nand_init(void) {}
 716#endif
 717
 718/******************************************************************************
 719 * Core power regulator
 720 ******************************************************************************/
 721#if defined(CONFIG_REGULATOR_MAX1586) || \
 722    defined(CONFIG_REGULATOR_MAX1586_MODULE)
 723static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
 724        REGULATOR_SUPPLY("vcc_core", NULL),
 725};
 726
 727static struct regulator_init_data balloon3_max1587a_v3_info = {
 728        .constraints = {
 729                .name           = "vcc_core range",
 730                .min_uV         = 900000,
 731                .max_uV         = 1705000,
 732                .always_on      = 1,
 733                .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 734        },
 735        .consumer_supplies      = balloon3_max1587a_consumers,
 736        .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
 737};
 738
 739static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
 740        {
 741                .name           = "vcc_core",
 742                .id             = MAX1586_V3,
 743                .platform_data  = &balloon3_max1587a_v3_info,
 744        }
 745};
 746
 747static struct max1586_platform_data balloon3_max1587a_info = {
 748        .subdevs     = balloon3_max1587a_subdevs,
 749        .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
 750        .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
 751};
 752
 753static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
 754        {
 755                I2C_BOARD_INFO("max1586", 0x14),
 756                .platform_data  = &balloon3_max1587a_info,
 757        },
 758};
 759
 760static void __init balloon3_pmic_init(void)
 761{
 762        pxa27x_set_i2c_power_info(NULL);
 763        i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
 764}
 765#else
 766static inline void balloon3_pmic_init(void) {}
 767#endif
 768
 769/******************************************************************************
 770 * Machine init
 771 ******************************************************************************/
 772static void __init balloon3_init(void)
 773{
 774        ARB_CNTRL = ARB_CORE_PARK | 0x234;
 775
 776        pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 777
 778        pxa_set_ffuart_info(NULL);
 779        pxa_set_btuart_info(NULL);
 780        pxa_set_stuart_info(NULL);
 781
 782        balloon3_i2c_init();
 783        balloon3_irda_init();
 784        balloon3_lcd_init();
 785        balloon3_leds_init();
 786        balloon3_mmc_init();
 787        balloon3_nand_init();
 788        balloon3_nor_init();
 789        balloon3_pmic_init();
 790        balloon3_ts_init();
 791        balloon3_udc_init();
 792        balloon3_uhc_init();
 793        balloon3_cf_init();
 794}
 795
 796static struct map_desc balloon3_io_desc[] __initdata = {
 797        {       /* CPLD/FPGA */
 798                .virtual        = (unsigned long)BALLOON3_FPGA_VIRT,
 799                .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 800                .length         = BALLOON3_FPGA_LENGTH,
 801                .type           = MT_DEVICE,
 802        },
 803};
 804
 805static void __init balloon3_map_io(void)
 806{
 807        pxa27x_map_io();
 808        iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 809}
 810
 811MACHINE_START(BALLOON3, "Balloon3")
 812        /* Maintainer: Nick Bane. */
 813        .map_io         = balloon3_map_io,
 814        .nr_irqs        = BALLOON3_NR_IRQS,
 815        .init_irq       = balloon3_init_irq,
 816        .handle_irq     = pxa27x_handle_irq,
 817        .init_time      = pxa_timer_init,
 818        .init_machine   = balloon3_init,
 819        .atag_offset    = 0x100,
 820        .restart        = pxa_restart,
 821MACHINE_END
 822