arch/arm/mach-pxa/balloon3.c

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