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/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/sched.h>
  20 #include <linux/bitops.h>
  21 #include <linux/fb.h>
  22 #include <linux/gpio.h>
  23 #include <linux/ioport.h>
  24 #include <linux/ucb1400.h>
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/types.h>
  28 #include <linux/i2c/pcf857x.h>
  29 #include <linux/i2c/pxa-i2c.h>
  30 #include <linux/mtd/nand.h>
  31 #include <linux/mtd/physmap.h>
  32 #include <linux/regulator/max1586.h>
  33
  34 #include <asm/setup.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 <mach/pxa27x.h>
  45 #include <mach/balloon3.h>
  46 #include <mach/audio.h>
  47 #include <mach/pxafb.h>
  48 #include <mach/mmc.h>
  49 #include <mach/udc.h>
  50 #include <mach/pxa27x-udc.h>
  51 #include <mach/irda.h>
  52 #include <mach/ohci.h>
  53
  54 #include "generic.h"
  55 #include "devices.h"
  56
  57 /******************************************************************************
  58  * Pin configuration
  59  ******************************************************************************/
  60 static unsigned long balloon3_pin_config[] __initdata = {
  61         /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
  62         GPIO42_BTUART_RXD,
  63         GPIO43_BTUART_TXD,
  64         GPIO44_BTUART_CTS,
  65         GPIO45_BTUART_RTS,
  66
  67         /* Reset, configured as GPIO wakeup source */
  68         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  69 };
  70
  71 /******************************************************************************
  72  * Compatibility: Parameter parsing
  73  ******************************************************************************/
  74 static unsigned long balloon3_irq_enabled;
  75
  76 static unsigned long balloon3_features_present =
  77                 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
  78                 (1 << BALLOON3_FEATURE_AUDIO) |
  79                 (1 << BALLOON3_FEATURE_TOPPOLY);
  80
  81 int balloon3_has(enum balloon3_features feature)
  82 {
  83         return (balloon3_features_present & (1 << feature)) ? 1 : 0;
  84 }
  85 EXPORT_SYMBOL_GPL(balloon3_has);
  86
  87 int __init parse_balloon3_features(char *arg)
  88 {
  89         if (!arg)
  90                 return 0;
  91
  92         return strict_strtoul(arg, 0, &balloon3_features_present);
  93 }
  94 early_param("balloon3_features", parse_balloon3_features);
  95
  96 /******************************************************************************
  97  * Compact Flash slot
  98  ******************************************************************************/
  99 #if     defined(CONFIG_PCMCIA_PXA2XX) || defined(CONFIG_PCMCIA_PXA2XX_MODULE)
 100 static unsigned long balloon3_cf_pin_config[] __initdata = {
 101         GPIO48_nPOE,
 102         GPIO49_nPWE,
 103         GPIO50_nPIOR,
 104         GPIO51_nPIOW,
 105         GPIO85_nPCE_1,
 106         GPIO54_nPCE_2,
 107         GPIO79_PSKTSEL,
 108         GPIO55_nPREG,
 109         GPIO56_nPWAIT,
 110         GPIO57_nIOIS16,
 111 };
 112
 113 static void __init balloon3_cf_init(void)
 114 {
 115         if (!balloon3_has(BALLOON3_FEATURE_CF))
 116                 return;
 117
 118         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_cf_pin_config));
 119 }
 120 #else
 121 static inline void balloon3_cf_init(void) {}
 122 #endif
 123
 124 /******************************************************************************
 125  * NOR Flash
 126  ******************************************************************************/
 127 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 128 static struct mtd_partition balloon3_nor_partitions[] = {
 129         {
 130                 .name           = "Flash",
 131                 .offset         = 0x00000000,
 132                 .size           = MTDPART_SIZ_FULL,
 133         }
 134 };
 135
 136 static struct physmap_flash_data balloon3_flash_data[] = {
 137         {
 138                 .width          = 2,    /* bankwidth in bytes */
 139                 .parts          = balloon3_nor_partitions,
 140                 .nr_parts       = ARRAY_SIZE(balloon3_nor_partitions)
 141         }
 142 };
 143
 144 static struct resource balloon3_flash_resource = {
 145         .start  = PXA_CS0_PHYS,
 146         .end    = PXA_CS0_PHYS + SZ_64M - 1,
 147         .flags  = IORESOURCE_MEM,
 148 };
 149
 150 static struct platform_device balloon3_flash = {
 151         .name           = "physmap-flash",
 152         .id             = 0,
 153         .resource       = &balloon3_flash_resource,
 154         .num_resources  = 1,
 155         .dev            = {
 156                 .platform_data = balloon3_flash_data,
 157         },
 158 };
 159 static void __init balloon3_nor_init(void)
 160 {
 161         platform_device_register(&balloon3_flash);
 162 }
 163 #else
 164 static inline void balloon3_nor_init(void) {}
 165 #endif
 166
 167 /******************************************************************************
 168  * Audio and Touchscreen
 169  ******************************************************************************/
 170 #if     defined(CONFIG_TOUCHSCREEN_UCB1400) || \
 171         defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 172 static unsigned long balloon3_ac97_pin_config[] __initdata = {
 173         GPIO28_AC97_BITCLK,
 174         GPIO29_AC97_SDATA_IN_0,
 175         GPIO30_AC97_SDATA_OUT,
 176         GPIO31_AC97_SYNC,
 177         GPIO113_AC97_nRESET,
 178         GPIO95_GPIO,
 179 };
 180
 181 static struct ucb1400_pdata vpac270_ucb1400_pdata = {
 182         .irq            = IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ),
 183 };
 184
 185
 186 static struct platform_device balloon3_ucb1400_device = {
 187         .name           = "ucb1400_core",
 188         .id             = -1,
 189         .dev            = {
 190                 .platform_data = &vpac270_ucb1400_pdata,
 191         },
 192 };
 193
 194 static void __init balloon3_ts_init(void)
 195 {
 196         if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
 197                 return;
 198
 199         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config));
 200         pxa_set_ac97_info(NULL);
 201         platform_device_register(&balloon3_ucb1400_device);
 202 }
 203 #else
 204 static inline void balloon3_ts_init(void) {}
 205 #endif
 206
 207 /******************************************************************************
 208  * Framebuffer
 209  ******************************************************************************/
 210 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 211 static unsigned long balloon3_lcd_pin_config[] __initdata = {
 212         GPIOxx_LCD_TFT_16BPP,
 213         GPIO99_GPIO,
 214 };
 215
 216 static struct pxafb_mode_info balloon3_lcd_modes[] = {
 217         {
 218                 .pixclock               = 38000,
 219                 .xres                   = 480,
 220                 .yres                   = 640,
 221                 .bpp                    = 16,
 222                 .hsync_len              = 8,
 223                 .left_margin            = 8,
 224                 .right_margin           = 8,
 225                 .vsync_len              = 2,
 226                 .upper_margin           = 4,
 227                 .lower_margin           = 5,
 228                 .sync                   = 0,
 229         },
 230 };
 231
 232 static struct pxafb_mach_info balloon3_lcd_screen = {
 233         .modes                  = balloon3_lcd_modes,
 234         .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
 235         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 236 };
 237
 238 static void balloon3_backlight_power(int on)
 239 {
 240         gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
 241 }
 242
 243 static void __init balloon3_lcd_init(void)
 244 {
 245         int ret;
 246
 247         if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
 248                 return;
 249
 250         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
 251
 252         ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
 253         if (ret) {
 254                 pr_err("Requesting BKL-ON GPIO failed!\n");
 255                 goto err;
 256         }
 257
 258         ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
 259         if (ret) {
 260                 pr_err("Setting BKL-ON GPIO direction failed!\n");
 261                 goto err2;
 262         }
 263
 264         balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
 265         pxa_set_fb_info(NULL, &balloon3_lcd_screen);
 266         return;
 267
 268 err2:
 269         gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
 270 err:
 271         return;
 272 }
 273 #else
 274 static inline void balloon3_lcd_init(void) {}
 275 #endif
 276
 277 /******************************************************************************
 278  * SD/MMC card controller
 279  ******************************************************************************/
 280 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 281 static unsigned long balloon3_mmc_pin_config[] __initdata = {
 282         GPIO32_MMC_CLK,
 283         GPIO92_MMC_DAT_0,
 284         GPIO109_MMC_DAT_1,
 285         GPIO110_MMC_DAT_2,
 286         GPIO111_MMC_DAT_3,
 287         GPIO112_MMC_CMD,
 288 };
 289
 290 static struct pxamci_platform_data balloon3_mci_platform_data = {
 291         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 292         .gpio_card_detect       = -1,
 293         .gpio_card_ro           = -1,
 294         .gpio_power             = -1,
 295         .detect_delay_ms        = 200,
 296 };
 297
 298 static void __init balloon3_mmc_init(void)
 299 {
 300         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
 301         pxa_set_mci_info(&balloon3_mci_platform_data);
 302 }
 303 #else
 304 static inline void balloon3_mmc_init(void) {}
 305 #endif
 306
 307 /******************************************************************************
 308  * USB Gadget
 309  ******************************************************************************/
 310 #if defined(CONFIG_USB_GADGET_PXA27X)||defined(CONFIG_USB_GADGET_PXA27X_MODULE)
 311 static void balloon3_udc_command(int cmd)
 312 {
 313         if (cmd == PXA2XX_UDC_CMD_CONNECT)
 314                 UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
 315         else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
 316                 UP2OCR &= ~UP2OCR_DPPUE;
 317 }
 318
 319 static int balloon3_udc_is_connected(void)
 320 {
 321         return 1;
 322 }
 323
 324 static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
 325         .udc_command            = balloon3_udc_command,
 326         .udc_is_connected       = balloon3_udc_is_connected,
 327         .gpio_pullup            = -1,
 328 };
 329
 330 static void __init balloon3_udc_init(void)
 331 {
 332         pxa_set_udc_info(&balloon3_udc_info);
 333         platform_device_register(&balloon3_gpio_vbus);
 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 static const char *balloon3_part_probes[] = { "cmdlinepart", NULL };
 682
 683 struct platform_nand_data balloon3_nand_pdata = {
 684         .chip = {
 685                 .nr_chips       = 4,
 686                 .chip_offset    = 0,
 687                 .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
 688                 .partitions     = balloon3_partition_info,
 689                 .chip_delay     = 50,
 690                 .part_probe_types = balloon3_part_probes,
 691         },
 692         .ctrl = {
 693                 .hwcontrol      = 0,
 694                 .dev_ready      = balloon3_nand_dev_ready,
 695                 .select_chip    = balloon3_nand_select_chip,
 696                 .cmd_ctrl       = balloon3_nand_cmd_ctl,
 697                 .probe          = balloon3_nand_probe,
 698                 .remove         = balloon3_nand_remove,
 699         },
 700 };
 701
 702 static struct resource balloon3_nand_resource[] = {
 703         [0] = {
 704                 .start = BALLOON3_NAND_BASE,
 705                 .end   = BALLOON3_NAND_BASE + 0x4,
 706                 .flags = IORESOURCE_MEM,
 707         },
 708 };
 709
 710 static struct platform_device balloon3_nand = {
 711         .name           = "gen_nand",
 712         .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
 713         .resource       = balloon3_nand_resource,
 714         .id             = -1,
 715         .dev            = {
 716                 .platform_data = &balloon3_nand_pdata,
 717         }
 718 };
 719
 720 static void __init balloon3_nand_init(void)
 721 {
 722         platform_device_register(&balloon3_nand);
 723 }
 724 #else
 725 static inline void balloon3_nand_init(void) {}
 726 #endif
 727
 728 /******************************************************************************
 729  * Core power regulator
 730  ******************************************************************************/
 731 #if defined(CONFIG_REGULATOR_MAX1586) || \
 732     defined(CONFIG_REGULATOR_MAX1586_MODULE)
 733 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
 734         {
 735                 .supply = "vcc_core",
 736         }
 737 };
 738
 739 static struct regulator_init_data balloon3_max1587a_v3_info = {
 740         .constraints = {
 741                 .name           = "vcc_core range",
 742                 .min_uV         = 900000,
 743                 .max_uV         = 1705000,
 744                 .always_on      = 1,
 745                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 746         },
 747         .consumer_supplies      = balloon3_max1587a_consumers,
 748         .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
 749 };
 750
 751 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
 752         {
 753                 .name           = "vcc_core",
 754                 .id             = MAX1586_V3,
 755                 .platform_data  = &balloon3_max1587a_v3_info,
 756         }
 757 };
 758
 759 static struct max1586_platform_data balloon3_max1587a_info = {
 760         .subdevs     = balloon3_max1587a_subdevs,
 761         .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
 762         .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
 763 };
 764
 765 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
 766         {
 767                 I2C_BOARD_INFO("max1586", 0x14),
 768                 .platform_data  = &balloon3_max1587a_info,
 769         },
 770 };
 771
 772 static void __init balloon3_pmic_init(void)
 773 {
 774         pxa27x_set_i2c_power_info(NULL);
 775         i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
 776 }
 777 #else
 778 static inline void balloon3_pmic_init(void) {}
 779 #endif
 780
 781 /******************************************************************************
 782  * Machine init
 783  ******************************************************************************/
 784 static void __init balloon3_init(void)
 785 {
 786         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 787
 788         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 789
 790         pxa_set_ffuart_info(NULL);
 791         pxa_set_btuart_info(NULL);
 792         pxa_set_stuart_info(NULL);
 793
 794         balloon3_i2c_init();
 795         balloon3_irda_init();
 796         balloon3_lcd_init();
 797         balloon3_leds_init();
 798         balloon3_mmc_init();
 799         balloon3_nand_init();
 800         balloon3_nor_init();
 801         balloon3_pmic_init();
 802         balloon3_ts_init();
 803         balloon3_udc_init();
 804         balloon3_uhc_init();
 805         balloon3_cf_init();
 806 }
 807
 808 static struct map_desc balloon3_io_desc[] __initdata = {
 809         {       /* CPLD/FPGA */
 810                 .virtual        = (unsigned long)BALLOON3_FPGA_VIRT,
 811                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 812                 .length         = BALLOON3_FPGA_LENGTH,
 813                 .type           = MT_DEVICE,
 814         },
 815 };
 816
 817 static void __init balloon3_map_io(void)
 818 {
 819         pxa27x_map_io();
 820         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 821 }
 822
 823 MACHINE_START(BALLOON3, "Balloon3")
 824         /* Maintainer: Nick Bane. */
 825         .map_io         = balloon3_map_io,
 826         .nr_irqs        = BALLOON3_NR_IRQS,
 827         .init_irq       = balloon3_init_irq,
 828         .handle_irq     = pxa27x_handle_irq,
 829         .timer          = &pxa_timer,
 830         .init_machine   = balloon3_init,
 831         .atag_offset    = 0x100,
 832 MACHINE_END