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 <mach/pxafb.h>
  49 #include <mach/mmc.h>
  50 #include <mach/udc.h>
  51 #include <mach/pxa27x-udc.h>
  52 #include <mach/irda.h>
  53 #include <mach/ohci.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 strict_strtoul(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         platform_device_register(&balloon3_gpio_vbus);
 335 }
 336 #else
 337 static inline void balloon3_udc_init(void) {}
 338 #endif
 339
 340 /******************************************************************************
 341  * IrDA
 342  ******************************************************************************/
 343 #if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
 344 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 345         .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
 346 };
 347
 348 static void __init balloon3_irda_init(void)
 349 {
 350         pxa_set_ficp_info(&balloon3_ficp_platform_data);
 351 }
 352 #else
 353 static inline void balloon3_irda_init(void) {}
 354 #endif
 355
 356 /******************************************************************************
 357  * USB Host
 358  ******************************************************************************/
 359 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 360 static unsigned long balloon3_uhc_pin_config[] __initdata = {
 361         GPIO88_USBH1_PWR,
 362         GPIO89_USBH1_PEN,
 363 };
 364
 365 static struct pxaohci_platform_data balloon3_ohci_info = {
 366         .port_mode      = PMM_PERPORT_MODE,
 367         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 368 };
 369
 370 static void __init balloon3_uhc_init(void)
 371 {
 372         if (!balloon3_has(BALLOON3_FEATURE_OHCI))
 373                 return;
 374         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
 375         pxa_set_ohci_info(&balloon3_ohci_info);
 376 }
 377 #else
 378 static inline void balloon3_uhc_init(void) {}
 379 #endif
 380
 381 /******************************************************************************
 382  * LEDs
 383  ******************************************************************************/
 384 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 385 static unsigned long balloon3_led_pin_config[] __initdata = {
 386         GPIO9_GPIO,     /* NAND activity LED */
 387         GPIO10_GPIO,    /* Heartbeat LED */
 388 };
 389
 390 struct gpio_led balloon3_gpio_leds[] = {
 391         {
 392                 .name                   = "balloon3:green:idle",
 393                 .default_trigger        = "heartbeat",
 394                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
 395                 .active_low             = 1,
 396         }, {
 397                 .name                   = "balloon3:green:nand",
 398                 .default_trigger        = "nand-disk",
 399                 .gpio                   = BALLOON3_GPIO_LED_NAND,
 400                 .active_low             = 1,
 401         },
 402 };
 403
 404 static struct gpio_led_platform_data balloon3_gpio_led_info = {
 405         .leds           = balloon3_gpio_leds,
 406         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 407 };
 408
 409 static struct platform_device balloon3_leds = {
 410         .name   = "leds-gpio",
 411         .id     = 0,
 412         .dev    = {
 413                 .platform_data  = &balloon3_gpio_led_info,
 414         }
 415 };
 416
 417 struct gpio_led balloon3_pcf_gpio_leds[] = {
 418         {
 419                 .name                   = "balloon3:green:led0",
 420                 .gpio                   = BALLOON3_PCF_GPIO_LED0,
 421                 .active_low             = 1,
 422         }, {
 423                 .name                   = "balloon3:green:led1",
 424                 .gpio                   = BALLOON3_PCF_GPIO_LED1,
 425                 .active_low             = 1,
 426         }, {
 427                 .name                   = "balloon3:orange:led2",
 428                 .gpio                   = BALLOON3_PCF_GPIO_LED2,
 429                 .active_low             = 1,
 430         }, {
 431                 .name                   = "balloon3:orange:led3",
 432                 .gpio                   = BALLOON3_PCF_GPIO_LED3,
 433                 .active_low             = 1,
 434         }, {
 435                 .name                   = "balloon3:orange:led4",
 436                 .gpio                   = BALLOON3_PCF_GPIO_LED4,
 437                 .active_low             = 1,
 438         }, {
 439                 .name                   = "balloon3:orange:led5",
 440                 .gpio                   = BALLOON3_PCF_GPIO_LED5,
 441                 .active_low             = 1,
 442         }, {
 443                 .name                   = "balloon3:red:led6",
 444                 .gpio                   = BALLOON3_PCF_GPIO_LED6,
 445                 .active_low             = 1,
 446         }, {
 447                 .name                   = "balloon3:red:led7",
 448                 .gpio                   = BALLOON3_PCF_GPIO_LED7,
 449                 .active_low             = 1,
 450         },
 451 };
 452
 453 static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
 454         .leds           = balloon3_pcf_gpio_leds,
 455         .num_leds       = ARRAY_SIZE(balloon3_pcf_gpio_leds),
 456 };
 457
 458 static struct platform_device balloon3_pcf_leds = {
 459         .name   = "leds-gpio",
 460         .id     = 1,
 461         .dev    = {
 462                 .platform_data  = &balloon3_pcf_gpio_led_info,
 463         }
 464 };
 465
 466 static void __init balloon3_leds_init(void)
 467 {
 468         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
 469         platform_device_register(&balloon3_leds);
 470         platform_device_register(&balloon3_pcf_leds);
 471 }
 472 #else
 473 static inline void balloon3_leds_init(void) {}
 474 #endif
 475
 476 /******************************************************************************
 477  * FPGA IRQ
 478  ******************************************************************************/
 479 static void balloon3_mask_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
 486 static void balloon3_unmask_irq(struct irq_data *d)
 487 {
 488         int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
 489         balloon3_irq_enabled |= (1 << balloon3_irq);
 490         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 491 }
 492
 493 static struct irq_chip balloon3_irq_chip = {
 494         .name           = "FPGA",
 495         .irq_ack        = balloon3_mask_irq,
 496         .irq_mask       = balloon3_mask_irq,
 497         .irq_unmask     = balloon3_unmask_irq,
 498 };
 499
 500 static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
 501 {
 502         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 503                                         balloon3_irq_enabled;
 504         do {
 505                 /* clear useless edge notification */
 506                 if (desc->irq_data.chip->irq_ack) {
 507                         struct irq_data *d;
 508
 509                         d = irq_get_irq_data(BALLOON3_AUX_NIRQ);
 510                         desc->irq_data.chip->irq_ack(d);
 511                 }
 512
 513                 while (pending) {
 514                         irq = BALLOON3_IRQ(0) + __ffs(pending);
 515                         generic_handle_irq(irq);
 516                         pending &= pending - 1;
 517                 }
 518                 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 519                                 balloon3_irq_enabled;
 520         } while (pending);
 521 }
 522
 523 static void __init balloon3_init_irq(void)
 524 {
 525         int irq;
 526
 527         pxa27x_init_irq();
 528         /* setup extra Balloon3 irqs */
 529         for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
 530                 irq_set_chip_and_handler(irq, &balloon3_irq_chip,
 531                                          handle_level_irq);
 532                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 533         }
 534
 535         irq_set_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 536         irq_set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
 537
 538         pr_debug("%s: chained handler installed - irq %d automatically "
 539                 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
 540 }
 541
 542 /******************************************************************************
 543  * GPIO expander
 544  ******************************************************************************/
 545 #if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
 546 static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
 547         .gpio_base      = BALLOON3_PCF_GPIO_BASE,
 548         .n_latch        = 0,
 549         .setup          = NULL,
 550         .teardown       = NULL,
 551         .context        = NULL,
 552 };
 553
 554 static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
 555         {
 556                 I2C_BOARD_INFO("pcf8574a", 0x38),
 557                 .platform_data  = &balloon3_pcf857x_pdata,
 558         },
 559 };
 560
 561 static void __init balloon3_i2c_init(void)
 562 {
 563         pxa_set_i2c_info(NULL);
 564         i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
 565 }
 566 #else
 567 static inline void balloon3_i2c_init(void) {}
 568 #endif
 569
 570 /******************************************************************************
 571  * NAND
 572  ******************************************************************************/
 573 #if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 574 static void balloon3_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
 575 {
 576         struct nand_chip *this = mtd->priv;
 577         uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
 578
 579         if (ctrl & NAND_CTRL_CHANGE) {
 580                 if (ctrl & NAND_CLE)
 581                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
 582                 else
 583                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
 584
 585                 if (ctrl & NAND_ALE)
 586                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
 587                 else
 588                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
 589
 590                 if (balloon3_ctl_clr)
 591                         __raw_writel(balloon3_ctl_clr,
 592                                 BALLOON3_NAND_CONTROL_REG);
 593                 if (balloon3_ctl_set)
 594                         __raw_writel(balloon3_ctl_set,
 595                                 BALLOON3_NAND_CONTROL_REG +
 596                                 BALLOON3_FPGA_SETnCLR);
 597         }
 598
 599         if (cmd != NAND_CMD_NONE)
 600                 writeb(cmd, this->IO_ADDR_W);
 601 }
 602
 603 static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
 604 {
 605         if (chip < 0 || chip > 3)
 606                 return;
 607
 608         /* Assert all nCE lines */
 609         __raw_writew(
 610                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 611                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
 612                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 613
 614         /* Deassert correct nCE line */
 615         __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
 616                 BALLOON3_NAND_CONTROL_REG);
 617 }
 618
 619 static int balloon3_nand_dev_ready(struct mtd_info *mtd)
 620 {
 621         return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
 622 }
 623
 624 static int balloon3_nand_probe(struct platform_device *pdev)
 625 {
 626         uint16_t ver;
 627         int ret;
 628
 629         __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
 630                 BALLOON3_NAND_CONTROL2_REG + BALLOON3_FPGA_SETnCLR);
 631
 632         ver = __raw_readw(BALLOON3_FPGA_VER);
 633         if (ver < 0x4f08)
 634                 pr_warn("The FPGA code, version 0x%04x, is too old. "
 635                         "NAND support might be broken in this version!", ver);
 636
 637         /* Power up the NAND chips */
 638         ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
 639         if (ret)
 640                 goto err1;
 641
 642         ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
 643         if (ret)
 644                 goto err2;
 645
 646         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
 647
 648         /* Deassert all nCE lines and write protect line */
 649         __raw_writel(
 650                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 651                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
 652                 BALLOON3_NAND_CONTROL_FLWP,
 653                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 654         return 0;
 655
 656 err2:
 657         gpio_free(BALLOON3_GPIO_RUN_NAND);
 658 err1:
 659         return ret;
 660 }
 661
 662 static void balloon3_nand_remove(struct platform_device *pdev)
 663 {
 664         /* Power down the NAND chips */
 665         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
 666         gpio_free(BALLOON3_GPIO_RUN_NAND);
 667 }
 668
 669 static struct mtd_partition balloon3_partition_info[] = {
 670         [0] = {
 671                 .name   = "Boot",
 672                 .offset = 0,
 673                 .size   = SZ_4M,
 674         },
 675         [1] = {
 676                 .name   = "RootFS",
 677                 .offset = MTDPART_OFS_APPEND,
 678                 .size   = MTDPART_SIZ_FULL
 679         },
 680 };
 681
 682 static const char *balloon3_part_probes[] = { "cmdlinepart", NULL };
 683
 684 struct platform_nand_data balloon3_nand_pdata = {
 685         .chip = {
 686                 .nr_chips       = 4,
 687                 .chip_offset    = 0,
 688                 .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
 689                 .partitions     = balloon3_partition_info,
 690                 .chip_delay     = 50,
 691                 .part_probe_types = balloon3_part_probes,
 692         },
 693         .ctrl = {
 694                 .hwcontrol      = 0,
 695                 .dev_ready      = balloon3_nand_dev_ready,
 696                 .select_chip    = balloon3_nand_select_chip,
 697                 .cmd_ctrl       = balloon3_nand_cmd_ctl,
 698                 .probe          = balloon3_nand_probe,
 699                 .remove         = balloon3_nand_remove,
 700         },
 701 };
 702
 703 static struct resource balloon3_nand_resource[] = {
 704         [0] = {
 705                 .start = BALLOON3_NAND_BASE,
 706                 .end   = BALLOON3_NAND_BASE + 0x4,
 707                 .flags = IORESOURCE_MEM,
 708         },
 709 };
 710
 711 static struct platform_device balloon3_nand = {
 712         .name           = "gen_nand",
 713         .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
 714         .resource       = balloon3_nand_resource,
 715         .id             = -1,
 716         .dev            = {
 717                 .platform_data = &balloon3_nand_pdata,
 718         }
 719 };
 720
 721 static void __init balloon3_nand_init(void)
 722 {
 723         platform_device_register(&balloon3_nand);
 724 }
 725 #else
 726 static inline void balloon3_nand_init(void) {}
 727 #endif
 728
 729 /******************************************************************************
 730  * Core power regulator
 731  ******************************************************************************/
 732 #if defined(CONFIG_REGULATOR_MAX1586) || \
 733     defined(CONFIG_REGULATOR_MAX1586_MODULE)
 734 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
 735         {
 736                 .supply = "vcc_core",
 737         }
 738 };
 739
 740 static struct regulator_init_data balloon3_max1587a_v3_info = {
 741         .constraints = {
 742                 .name           = "vcc_core range",
 743                 .min_uV         = 900000,
 744                 .max_uV         = 1705000,
 745                 .always_on      = 1,
 746                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 747         },
 748         .consumer_supplies      = balloon3_max1587a_consumers,
 749         .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
 750 };
 751
 752 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
 753         {
 754                 .name           = "vcc_core",
 755                 .id             = MAX1586_V3,
 756                 .platform_data  = &balloon3_max1587a_v3_info,
 757         }
 758 };
 759
 760 static struct max1586_platform_data balloon3_max1587a_info = {
 761         .subdevs     = balloon3_max1587a_subdevs,
 762         .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
 763         .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
 764 };
 765
 766 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
 767         {
 768                 I2C_BOARD_INFO("max1586", 0x14),
 769                 .platform_data  = &balloon3_max1587a_info,
 770         },
 771 };
 772
 773 static void __init balloon3_pmic_init(void)
 774 {
 775         pxa27x_set_i2c_power_info(NULL);
 776         i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
 777 }
 778 #else
 779 static inline void balloon3_pmic_init(void) {}
 780 #endif
 781
 782 /******************************************************************************
 783  * Machine init
 784  ******************************************************************************/
 785 static void __init balloon3_init(void)
 786 {
 787         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 788
 789         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 790
 791         pxa_set_ffuart_info(NULL);
 792         pxa_set_btuart_info(NULL);
 793         pxa_set_stuart_info(NULL);
 794
 795         balloon3_i2c_init();
 796         balloon3_irda_init();
 797         balloon3_lcd_init();
 798         balloon3_leds_init();
 799         balloon3_mmc_init();
 800         balloon3_nand_init();
 801         balloon3_nor_init();
 802         balloon3_pmic_init();
 803         balloon3_ts_init();
 804         balloon3_udc_init();
 805         balloon3_uhc_init();
 806         balloon3_cf_init();
 807 }
 808
 809 static struct map_desc balloon3_io_desc[] __initdata = {
 810         {       /* CPLD/FPGA */
 811                 .virtual        = (unsigned long)BALLOON3_FPGA_VIRT,
 812                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 813                 .length         = BALLOON3_FPGA_LENGTH,
 814                 .type           = MT_DEVICE,
 815         },
 816 };
 817
 818 static void __init balloon3_map_io(void)
 819 {
 820         pxa27x_map_io();
 821         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 822 }
 823
 824 MACHINE_START(BALLOON3, "Balloon3")
 825         /* Maintainer: Nick Bane. */
 826         .map_io         = balloon3_map_io,
 827         .nr_irqs        = BALLOON3_NR_IRQS,
 828         .init_irq       = balloon3_init_irq,
 829         .handle_irq     = pxa27x_handle_irq,
 830         .timer          = &pxa_timer,
 831         .init_machine   = balloon3_init,
 832         .atag_offset    = 0x100,
 833         .restart        = pxa_restart,
 834 MACHINE_END