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/leds.h>
  21 #include <linux/sched.h>
  22 #include <linux/bitops.h>
  23 #include <linux/fb.h>
  24 #include <linux/gpio.h>
  25 #include <linux/ioport.h>
  26 #include <linux/ucb1400.h>
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/types.h>
  29 #include <linux/platform_data/pcf857x.h>
  30 #include <linux/platform_data/i2c-pxa.h>
  31 #include <linux/mtd/platnand.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 <linux/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 "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 "udc.h"
  51 #include "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         .detect_delay_ms        = 200,
 294 };
 295
 296 static void __init balloon3_mmc_init(void)
 297 {
 298         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
 299         pxa_set_mci_info(&balloon3_mci_platform_data);
 300 }
 301 #else
 302 static inline void balloon3_mmc_init(void) {}
 303 #endif
 304
 305 /******************************************************************************
 306  * USB Gadget
 307  ******************************************************************************/
 308 #if defined(CONFIG_USB_PXA27X)||defined(CONFIG_USB_PXA27X_MODULE)
 309 static void balloon3_udc_command(int cmd)
 310 {
 311         if (cmd == PXA2XX_UDC_CMD_CONNECT)
 312                 UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
 313         else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
 314                 UP2OCR &= ~UP2OCR_DPPUE;
 315 }
 316
 317 static int balloon3_udc_is_connected(void)
 318 {
 319         return 1;
 320 }
 321
 322 static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
 323         .udc_command            = balloon3_udc_command,
 324         .udc_is_connected       = balloon3_udc_is_connected,
 325         .gpio_pullup            = -1,
 326 };
 327
 328 static void __init balloon3_udc_init(void)
 329 {
 330         pxa_set_udc_info(&balloon3_udc_info);
 331 }
 332 #else
 333 static inline void balloon3_udc_init(void) {}
 334 #endif
 335
 336 /******************************************************************************
 337  * IrDA
 338  ******************************************************************************/
 339 #if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
 340 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 341         .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
 342 };
 343
 344 static void __init balloon3_irda_init(void)
 345 {
 346         pxa_set_ficp_info(&balloon3_ficp_platform_data);
 347 }
 348 #else
 349 static inline void balloon3_irda_init(void) {}
 350 #endif
 351
 352 /******************************************************************************
 353  * USB Host
 354  ******************************************************************************/
 355 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 356 static unsigned long balloon3_uhc_pin_config[] __initdata = {
 357         GPIO88_USBH1_PWR,
 358         GPIO89_USBH1_PEN,
 359 };
 360
 361 static struct pxaohci_platform_data balloon3_ohci_info = {
 362         .port_mode      = PMM_PERPORT_MODE,
 363         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 364 };
 365
 366 static void __init balloon3_uhc_init(void)
 367 {
 368         if (!balloon3_has(BALLOON3_FEATURE_OHCI))
 369                 return;
 370         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
 371         pxa_set_ohci_info(&balloon3_ohci_info);
 372 }
 373 #else
 374 static inline void balloon3_uhc_init(void) {}
 375 #endif
 376
 377 /******************************************************************************
 378  * LEDs
 379  ******************************************************************************/
 380 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 381 static unsigned long balloon3_led_pin_config[] __initdata = {
 382         GPIO9_GPIO,     /* NAND activity LED */
 383         GPIO10_GPIO,    /* Heartbeat LED */
 384 };
 385
 386 struct gpio_led balloon3_gpio_leds[] = {
 387         {
 388                 .name                   = "balloon3:green:idle",
 389                 .default_trigger        = "heartbeat",
 390                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
 391                 .active_low             = 1,
 392         }, {
 393                 .name                   = "balloon3:green:nand",
 394                 .default_trigger        = "nand-disk",
 395                 .gpio                   = BALLOON3_GPIO_LED_NAND,
 396                 .active_low             = 1,
 397         },
 398 };
 399
 400 static struct gpio_led_platform_data balloon3_gpio_led_info = {
 401         .leds           = balloon3_gpio_leds,
 402         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 403 };
 404
 405 static struct platform_device balloon3_leds = {
 406         .name   = "leds-gpio",
 407         .id     = 0,
 408         .dev    = {
 409                 .platform_data  = &balloon3_gpio_led_info,
 410         }
 411 };
 412
 413 struct gpio_led balloon3_pcf_gpio_leds[] = {
 414         {
 415                 .name                   = "balloon3:green:led0",
 416                 .gpio                   = BALLOON3_PCF_GPIO_LED0,
 417                 .active_low             = 1,
 418         }, {
 419                 .name                   = "balloon3:green:led1",
 420                 .gpio                   = BALLOON3_PCF_GPIO_LED1,
 421                 .active_low             = 1,
 422         }, {
 423                 .name                   = "balloon3:orange:led2",
 424                 .gpio                   = BALLOON3_PCF_GPIO_LED2,
 425                 .active_low             = 1,
 426         }, {
 427                 .name                   = "balloon3:orange:led3",
 428                 .gpio                   = BALLOON3_PCF_GPIO_LED3,
 429                 .active_low             = 1,
 430         }, {
 431                 .name                   = "balloon3:orange:led4",
 432                 .gpio                   = BALLOON3_PCF_GPIO_LED4,
 433                 .active_low             = 1,
 434         }, {
 435                 .name                   = "balloon3:orange:led5",
 436                 .gpio                   = BALLOON3_PCF_GPIO_LED5,
 437                 .active_low             = 1,
 438         }, {
 439                 .name                   = "balloon3:red:led6",
 440                 .gpio                   = BALLOON3_PCF_GPIO_LED6,
 441                 .active_low             = 1,
 442         }, {
 443                 .name                   = "balloon3:red:led7",
 444                 .gpio                   = BALLOON3_PCF_GPIO_LED7,
 445                 .active_low             = 1,
 446         },
 447 };
 448
 449 static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
 450         .leds           = balloon3_pcf_gpio_leds,
 451         .num_leds       = ARRAY_SIZE(balloon3_pcf_gpio_leds),
 452 };
 453
 454 static struct platform_device balloon3_pcf_leds = {
 455         .name   = "leds-gpio",
 456         .id     = 1,
 457         .dev    = {
 458                 .platform_data  = &balloon3_pcf_gpio_led_info,
 459         }
 460 };
 461
 462 static void __init balloon3_leds_init(void)
 463 {
 464         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
 465         platform_device_register(&balloon3_leds);
 466         platform_device_register(&balloon3_pcf_leds);
 467 }
 468 #else
 469 static inline void balloon3_leds_init(void) {}
 470 #endif
 471
 472 /******************************************************************************
 473  * FPGA IRQ
 474  ******************************************************************************/
 475 static void balloon3_mask_irq(struct irq_data *d)
 476 {
 477         int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
 478         balloon3_irq_enabled &= ~(1 << balloon3_irq);
 479         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 480 }
 481
 482 static void balloon3_unmask_irq(struct irq_data *d)
 483 {
 484         int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
 485         balloon3_irq_enabled |= (1 << balloon3_irq);
 486         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 487 }
 488
 489 static struct irq_chip balloon3_irq_chip = {
 490         .name           = "FPGA",
 491         .irq_ack        = balloon3_mask_irq,
 492         .irq_mask       = balloon3_mask_irq,
 493         .irq_unmask     = balloon3_unmask_irq,
 494 };
 495
 496 static void balloon3_irq_handler(struct irq_desc *desc)
 497 {
 498         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 499                                         balloon3_irq_enabled;
 500         do {
 501                 struct irq_data *d = irq_desc_get_irq_data(desc);
 502                 struct irq_chip *chip = irq_desc_get_chip(desc);
 503                 unsigned int irq;
 504
 505                 /* clear useless edge notification */
 506                 if (chip->irq_ack)
 507                         chip->irq_ack(d);
 508
 509                 while (pending) {
 510                         irq = BALLOON3_IRQ(0) + __ffs(pending);
 511                         generic_handle_irq(irq);
 512                         pending &= pending - 1;
 513                 }
 514                 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 515                                 balloon3_irq_enabled;
 516         } while (pending);
 517 }
 518
 519 static void __init balloon3_init_irq(void)
 520 {
 521         int irq;
 522
 523         pxa27x_init_irq();
 524         /* setup extra Balloon3 irqs */
 525         for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
 526                 irq_set_chip_and_handler(irq, &balloon3_irq_chip,
 527                                          handle_level_irq);
 528                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 529         }
 530
 531         irq_set_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 532         irq_set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
 533
 534         pr_debug("%s: chained handler installed - irq %d automatically "
 535                 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
 536 }
 537
 538 /******************************************************************************
 539  * GPIO expander
 540  ******************************************************************************/
 541 #if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
 542 static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
 543         .gpio_base      = BALLOON3_PCF_GPIO_BASE,
 544         .n_latch        = 0,
 545         .setup          = NULL,
 546         .teardown       = NULL,
 547         .context        = NULL,
 548 };
 549
 550 static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
 551         {
 552                 I2C_BOARD_INFO("pcf8574a", 0x38),
 553                 .platform_data  = &balloon3_pcf857x_pdata,
 554         },
 555 };
 556
 557 static void __init balloon3_i2c_init(void)
 558 {
 559         pxa_set_i2c_info(NULL);
 560         i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
 561 }
 562 #else
 563 static inline void balloon3_i2c_init(void) {}
 564 #endif
 565
 566 /******************************************************************************
 567  * NAND
 568  ******************************************************************************/
 569 #if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 570 static void balloon3_nand_cmd_ctl(struct nand_chip *this, int cmd,
 571                                   unsigned int ctrl)
 572 {
 573         uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
 574
 575         if (ctrl & NAND_CTRL_CHANGE) {
 576                 if (ctrl & NAND_CLE)
 577                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
 578                 else
 579                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
 580
 581                 if (ctrl & NAND_ALE)
 582                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
 583                 else
 584                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
 585
 586                 if (balloon3_ctl_clr)
 587                         __raw_writel(balloon3_ctl_clr,
 588                                 BALLOON3_NAND_CONTROL_REG);
 589                 if (balloon3_ctl_set)
 590                         __raw_writel(balloon3_ctl_set,
 591                                 BALLOON3_NAND_CONTROL_REG +
 592                                 BALLOON3_FPGA_SETnCLR);
 593         }
 594
 595         if (cmd != NAND_CMD_NONE)
 596                 writeb(cmd, this->legacy.IO_ADDR_W);
 597 }
 598
 599 static void balloon3_nand_select_chip(struct nand_chip *this, int chip)
 600 {
 601         if (chip < 0 || chip > 3)
 602                 return;
 603
 604         /* Assert all nCE lines */
 605         __raw_writew(
 606                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 607                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
 608                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 609
 610         /* Deassert correct nCE line */
 611         __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
 612                 BALLOON3_NAND_CONTROL_REG);
 613 }
 614
 615 static int balloon3_nand_dev_ready(struct nand_chip *this)
 616 {
 617         return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
 618 }
 619
 620 static int balloon3_nand_probe(struct platform_device *pdev)
 621 {
 622         uint16_t ver;
 623         int ret;
 624
 625         __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
 626                 BALLOON3_NAND_CONTROL2_REG + BALLOON3_FPGA_SETnCLR);
 627
 628         ver = __raw_readw(BALLOON3_FPGA_VER);
 629         if (ver < 0x4f08)
 630                 pr_warn("The FPGA code, version 0x%04x, is too old. "
 631                         "NAND support might be broken in this version!", ver);
 632
 633         /* Power up the NAND chips */
 634         ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
 635         if (ret)
 636                 goto err1;
 637
 638         ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
 639         if (ret)
 640                 goto err2;
 641
 642         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
 643
 644         /* Deassert all nCE lines and write protect line */
 645         __raw_writel(
 646                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 647                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
 648                 BALLOON3_NAND_CONTROL_FLWP,
 649                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 650         return 0;
 651
 652 err2:
 653         gpio_free(BALLOON3_GPIO_RUN_NAND);
 654 err1:
 655         return ret;
 656 }
 657
 658 static void balloon3_nand_remove(struct platform_device *pdev)
 659 {
 660         /* Power down the NAND chips */
 661         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
 662         gpio_free(BALLOON3_GPIO_RUN_NAND);
 663 }
 664
 665 static struct mtd_partition balloon3_partition_info[] = {
 666         [0] = {
 667                 .name   = "Boot",
 668                 .offset = 0,
 669                 .size   = SZ_4M,
 670         },
 671         [1] = {
 672                 .name   = "RootFS",
 673                 .offset = MTDPART_OFS_APPEND,
 674                 .size   = MTDPART_SIZ_FULL
 675         },
 676 };
 677
 678 struct platform_nand_data balloon3_nand_pdata = {
 679         .chip = {
 680                 .nr_chips       = 4,
 681                 .chip_offset    = 0,
 682                 .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
 683                 .partitions     = balloon3_partition_info,
 684                 .chip_delay     = 50,
 685         },
 686         .ctrl = {
 687                 .dev_ready      = balloon3_nand_dev_ready,
 688                 .select_chip    = balloon3_nand_select_chip,
 689                 .cmd_ctrl       = balloon3_nand_cmd_ctl,
 690                 .probe          = balloon3_nand_probe,
 691                 .remove         = balloon3_nand_remove,
 692         },
 693 };
 694
 695 static struct resource balloon3_nand_resource[] = {
 696         [0] = {
 697                 .start = BALLOON3_NAND_BASE,
 698                 .end   = BALLOON3_NAND_BASE + 0x4,
 699                 .flags = IORESOURCE_MEM,
 700         },
 701 };
 702
 703 static struct platform_device balloon3_nand = {
 704         .name           = "gen_nand",
 705         .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
 706         .resource       = balloon3_nand_resource,
 707         .id             = -1,
 708         .dev            = {
 709                 .platform_data = &balloon3_nand_pdata,
 710         }
 711 };
 712
 713 static void __init balloon3_nand_init(void)
 714 {
 715         platform_device_register(&balloon3_nand);
 716 }
 717 #else
 718 static inline void balloon3_nand_init(void) {}
 719 #endif
 720
 721 /******************************************************************************
 722  * Core power regulator
 723  ******************************************************************************/
 724 #if defined(CONFIG_REGULATOR_MAX1586) || \
 725     defined(CONFIG_REGULATOR_MAX1586_MODULE)
 726 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
 727         REGULATOR_SUPPLY("vcc_core", NULL),
 728 };
 729
 730 static struct regulator_init_data balloon3_max1587a_v3_info = {
 731         .constraints = {
 732                 .name           = "vcc_core range",
 733                 .min_uV         = 900000,
 734                 .max_uV         = 1705000,
 735                 .always_on      = 1,
 736                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 737         },
 738         .consumer_supplies      = balloon3_max1587a_consumers,
 739         .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
 740 };
 741
 742 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
 743         {
 744                 .name           = "vcc_core",
 745                 .id             = MAX1586_V3,
 746                 .platform_data  = &balloon3_max1587a_v3_info,
 747         }
 748 };
 749
 750 static struct max1586_platform_data balloon3_max1587a_info = {
 751         .subdevs     = balloon3_max1587a_subdevs,
 752         .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
 753         .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
 754 };
 755
 756 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
 757         {
 758                 I2C_BOARD_INFO("max1586", 0x14),
 759                 .platform_data  = &balloon3_max1587a_info,
 760         },
 761 };
 762
 763 static void __init balloon3_pmic_init(void)
 764 {
 765         pxa27x_set_i2c_power_info(NULL);
 766         i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
 767 }
 768 #else
 769 static inline void balloon3_pmic_init(void) {}
 770 #endif
 771
 772 /******************************************************************************
 773  * Machine init
 774  ******************************************************************************/
 775 static void __init balloon3_init(void)
 776 {
 777         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 778
 779         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 780
 781         pxa_set_ffuart_info(NULL);
 782         pxa_set_btuart_info(NULL);
 783         pxa_set_stuart_info(NULL);
 784
 785         balloon3_i2c_init();
 786         balloon3_irda_init();
 787         balloon3_lcd_init();
 788         balloon3_leds_init();
 789         balloon3_mmc_init();
 790         balloon3_nand_init();
 791         balloon3_nor_init();
 792         balloon3_pmic_init();
 793         balloon3_ts_init();
 794         balloon3_udc_init();
 795         balloon3_uhc_init();
 796         balloon3_cf_init();
 797 }
 798
 799 static struct map_desc balloon3_io_desc[] __initdata = {
 800         {       /* CPLD/FPGA */
 801                 .virtual        = (unsigned long)BALLOON3_FPGA_VIRT,
 802                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 803                 .length         = BALLOON3_FPGA_LENGTH,
 804                 .type           = MT_DEVICE,
 805         },
 806 };
 807
 808 static void __init balloon3_map_io(void)
 809 {
 810         pxa27x_map_io();
 811         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 812 }
 813
 814 MACHINE_START(BALLOON3, "Balloon3")
 815         /* Maintainer: Nick Bane. */
 816         .map_io         = balloon3_map_io,
 817         .nr_irqs        = BALLOON3_NR_IRQS,
 818         .init_irq       = balloon3_init_irq,
 819         .handle_irq     = pxa27x_handle_irq,
 820         .init_time      = pxa_timer_init,
 821         .init_machine   = balloon3_init,
 822         .atag_offset    = 0x100,
 823         .restart        = pxa_restart,
 824 MACHINE_END