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/sysdev.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/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 <plat/i2c.h>
  55
  56 #include "generic.h"
  57 #include "devices.h"
  58
  59 /******************************************************************************
  60  * Pin configuration
  61  ******************************************************************************/
  62 static unsigned long balloon3_pin_config[] __initdata = {
  63         /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
  64         GPIO42_BTUART_RXD,
  65         GPIO43_BTUART_TXD,
  66         GPIO44_BTUART_CTS,
  67         GPIO45_BTUART_RTS,
  68
  69         /* Reset, configured as GPIO wakeup source */
  70         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  71 };
  72
  73 /******************************************************************************
  74  * Compatibility: Parameter parsing
  75  ******************************************************************************/
  76 static unsigned long balloon3_irq_enabled;
  77
  78 static unsigned long balloon3_features_present =
  79                 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
  80                 (1 << BALLOON3_FEATURE_AUDIO) |
  81                 (1 << BALLOON3_FEATURE_TOPPOLY);
  82
  83 int balloon3_has(enum balloon3_features feature)
  84 {
  85         return (balloon3_features_present & (1 << feature)) ? 1 : 0;
  86 }
  87 EXPORT_SYMBOL_GPL(balloon3_has);
  88
  89 int __init parse_balloon3_features(char *arg)
  90 {
  91         if (!arg)
  92                 return 0;
  93
  94         return strict_strtoul(arg, 0, &balloon3_features_present);
  95 }
  96 early_param("balloon3_features", parse_balloon3_features);
  97
  98 /******************************************************************************
  99  * Compact Flash slot
 100  ******************************************************************************/
 101 #if     defined(CONFIG_PCMCIA_PXA2XX) || defined(CONFIG_PCMCIA_PXA2XX_MODULE)
 102 static unsigned long balloon3_cf_pin_config[] __initdata = {
 103         GPIO48_nPOE,
 104         GPIO49_nPWE,
 105         GPIO50_nPIOR,
 106         GPIO51_nPIOW,
 107         GPIO85_nPCE_1,
 108         GPIO54_nPCE_2,
 109         GPIO79_PSKTSEL,
 110         GPIO55_nPREG,
 111         GPIO56_nPWAIT,
 112         GPIO57_nIOIS16,
 113 };
 114
 115 static void __init balloon3_cf_init(void)
 116 {
 117         if (!balloon3_has(BALLOON3_FEATURE_CF))
 118                 return;
 119
 120         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_cf_pin_config));
 121 }
 122 #else
 123 static inline void balloon3_cf_init(void) {}
 124 #endif
 125
 126 /******************************************************************************
 127  * NOR Flash
 128  ******************************************************************************/
 129 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 130 static struct mtd_partition balloon3_nor_partitions[] = {
 131         {
 132                 .name           = "Flash",
 133                 .offset         = 0x00000000,
 134                 .size           = MTDPART_SIZ_FULL,
 135         }
 136 };
 137
 138 static struct physmap_flash_data balloon3_flash_data[] = {
 139         {
 140                 .width          = 2,    /* bankwidth in bytes */
 141                 .parts          = balloon3_nor_partitions,
 142                 .nr_parts       = ARRAY_SIZE(balloon3_nor_partitions)
 143         }
 144 };
 145
 146 static struct resource balloon3_flash_resource = {
 147         .start  = PXA_CS0_PHYS,
 148         .end    = PXA_CS0_PHYS + SZ_64M - 1,
 149         .flags  = IORESOURCE_MEM,
 150 };
 151
 152 static struct platform_device balloon3_flash = {
 153         .name           = "physmap-flash",
 154         .id             = 0,
 155         .resource       = &balloon3_flash_resource,
 156         .num_resources  = 1,
 157         .dev            = {
 158                 .platform_data = balloon3_flash_data,
 159         },
 160 };
 161 static void __init balloon3_nor_init(void)
 162 {
 163         platform_device_register(&balloon3_flash);
 164 }
 165 #else
 166 static inline void balloon3_nor_init(void) {}
 167 #endif
 168
 169 /******************************************************************************
 170  * Audio and Touchscreen
 171  ******************************************************************************/
 172 #if     defined(CONFIG_TOUCHSCREEN_UCB1400) || \
 173         defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 174 static unsigned long balloon3_ac97_pin_config[] __initdata = {
 175         GPIO28_AC97_BITCLK,
 176         GPIO29_AC97_SDATA_IN_0,
 177         GPIO30_AC97_SDATA_OUT,
 178         GPIO31_AC97_SYNC,
 179         GPIO113_AC97_nRESET,
 180         GPIO95_GPIO,
 181 };
 182
 183 static struct ucb1400_pdata vpac270_ucb1400_pdata = {
 184         .irq            = IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ),
 185 };
 186
 187
 188 static struct platform_device balloon3_ucb1400_device = {
 189         .name           = "ucb1400_core",
 190         .id             = -1,
 191         .dev            = {
 192                 .platform_data = &vpac270_ucb1400_pdata,
 193         },
 194 };
 195
 196 static void __init balloon3_ts_init(void)
 197 {
 198         if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
 199                 return;
 200
 201         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config));
 202         pxa_set_ac97_info(NULL);
 203         platform_device_register(&balloon3_ucb1400_device);
 204 }
 205 #else
 206 static inline void balloon3_ts_init(void) {}
 207 #endif
 208
 209 /******************************************************************************
 210  * Framebuffer
 211  ******************************************************************************/
 212 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 213 static unsigned long balloon3_lcd_pin_config[] __initdata = {
 214         GPIOxx_LCD_TFT_16BPP,
 215         GPIO99_GPIO,
 216 };
 217
 218 static struct pxafb_mode_info balloon3_lcd_modes[] = {
 219         {
 220                 .pixclock               = 38000,
 221                 .xres                   = 480,
 222                 .yres                   = 640,
 223                 .bpp                    = 16,
 224                 .hsync_len              = 8,
 225                 .left_margin            = 8,
 226                 .right_margin           = 8,
 227                 .vsync_len              = 2,
 228                 .upper_margin           = 4,
 229                 .lower_margin           = 5,
 230                 .sync                   = 0,
 231         },
 232 };
 233
 234 static struct pxafb_mach_info balloon3_lcd_screen = {
 235         .modes                  = balloon3_lcd_modes,
 236         .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
 237         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 238 };
 239
 240 static void balloon3_backlight_power(int on)
 241 {
 242         gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
 243 }
 244
 245 static void __init balloon3_lcd_init(void)
 246 {
 247         int ret;
 248
 249         if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
 250                 return;
 251
 252         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
 253
 254         ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
 255         if (ret) {
 256                 pr_err("Requesting BKL-ON GPIO failed!\n");
 257                 goto err;
 258         }
 259
 260         ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
 261         if (ret) {
 262                 pr_err("Setting BKL-ON GPIO direction failed!\n");
 263                 goto err2;
 264         }
 265
 266         balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
 267         set_pxa_fb_info(&balloon3_lcd_screen);
 268         return;
 269
 270 err2:
 271         gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
 272 err:
 273         return;
 274 }
 275 #else
 276 static inline void balloon3_lcd_init(void) {}
 277 #endif
 278
 279 /******************************************************************************
 280  * SD/MMC card controller
 281  ******************************************************************************/
 282 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 283 static unsigned long balloon3_mmc_pin_config[] __initdata = {
 284         GPIO32_MMC_CLK,
 285         GPIO92_MMC_DAT_0,
 286         GPIO109_MMC_DAT_1,
 287         GPIO110_MMC_DAT_2,
 288         GPIO111_MMC_DAT_3,
 289         GPIO112_MMC_CMD,
 290 };
 291
 292 static struct pxamci_platform_data balloon3_mci_platform_data = {
 293         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 294         .gpio_card_detect       = -1,
 295         .gpio_card_ro           = -1,
 296         .gpio_power             = -1,
 297         .detect_delay_ms        = 200,
 298 };
 299
 300 static void __init balloon3_mmc_init(void)
 301 {
 302         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
 303         pxa_set_mci_info(&balloon3_mci_platform_data);
 304 }
 305 #else
 306 static inline void balloon3_mmc_init(void) {}
 307 #endif
 308
 309 /******************************************************************************
 310  * USB Gadget
 311  ******************************************************************************/
 312 #if defined(CONFIG_USB_GADGET_PXA27X)||defined(CONFIG_USB_GADGET_PXA27X_MODULE)
 313 static void balloon3_udc_command(int cmd)
 314 {
 315         if (cmd == PXA2XX_UDC_CMD_CONNECT)
 316                 UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
 317         else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
 318                 UP2OCR &= ~UP2OCR_DPPUE;
 319 }
 320
 321 static int balloon3_udc_is_connected(void)
 322 {
 323         return 1;
 324 }
 325
 326 static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
 327         .udc_command            = balloon3_udc_command,
 328         .udc_is_connected       = balloon3_udc_is_connected,
 329         .gpio_pullup            = -1,
 330 };
 331
 332 static void __init balloon3_udc_init(void)
 333 {
 334         pxa_set_udc_info(&balloon3_udc_info);
 335         platform_device_register(&balloon3_gpio_vbus);
 336 }
 337 #else
 338 static inline void balloon3_udc_init(void) {}
 339 #endif
 340
 341 /******************************************************************************
 342  * IrDA
 343  ******************************************************************************/
 344 #if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
 345 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 346         .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
 347 };
 348
 349 static void __init balloon3_irda_init(void)
 350 {
 351         pxa_set_ficp_info(&balloon3_ficp_platform_data);
 352 }
 353 #else
 354 static inline void balloon3_irda_init(void) {}
 355 #endif
 356
 357 /******************************************************************************
 358  * USB Host
 359  ******************************************************************************/
 360 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 361 static unsigned long balloon3_uhc_pin_config[] __initdata = {
 362         GPIO88_USBH1_PWR,
 363         GPIO89_USBH1_PEN,
 364 };
 365
 366 static struct pxaohci_platform_data balloon3_ohci_info = {
 367         .port_mode      = PMM_PERPORT_MODE,
 368         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 369 };
 370
 371 static void __init balloon3_uhc_init(void)
 372 {
 373         if (!balloon3_has(BALLOON3_FEATURE_OHCI))
 374                 return;
 375         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
 376         pxa_set_ohci_info(&balloon3_ohci_info);
 377 }
 378 #else
 379 static inline void balloon3_uhc_init(void) {}
 380 #endif
 381
 382 /******************************************************************************
 383  * LEDs
 384  ******************************************************************************/
 385 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 386 static unsigned long balloon3_led_pin_config[] __initdata = {
 387         GPIO9_GPIO,     /* NAND activity LED */
 388         GPIO10_GPIO,    /* Heartbeat LED */
 389 };
 390
 391 struct gpio_led balloon3_gpio_leds[] = {
 392         {
 393                 .name                   = "balloon3:green:idle",
 394                 .default_trigger        = "heartbeat",
 395                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
 396                 .active_low             = 1,
 397         }, {
 398                 .name                   = "balloon3:green:nand",
 399                 .default_trigger        = "nand-disk",
 400                 .gpio                   = BALLOON3_GPIO_LED_NAND,
 401                 .active_low             = 1,
 402         },
 403 };
 404
 405 static struct gpio_led_platform_data balloon3_gpio_led_info = {
 406         .leds           = balloon3_gpio_leds,
 407         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 408 };
 409
 410 static struct platform_device balloon3_leds = {
 411         .name   = "leds-gpio",
 412         .id     = 0,
 413         .dev    = {
 414                 .platform_data  = &balloon3_gpio_led_info,
 415         }
 416 };
 417
 418 struct gpio_led balloon3_pcf_gpio_leds[] = {
 419         {
 420                 .name                   = "balloon3:green:led0",
 421                 .gpio                   = BALLOON3_PCF_GPIO_LED0,
 422                 .active_low             = 1,
 423         }, {
 424                 .name                   = "balloon3:green:led1",
 425                 .gpio                   = BALLOON3_PCF_GPIO_LED1,
 426                 .active_low             = 1,
 427         }, {
 428                 .name                   = "balloon3:orange:led2",
 429                 .gpio                   = BALLOON3_PCF_GPIO_LED2,
 430                 .active_low             = 1,
 431         }, {
 432                 .name                   = "balloon3:orange:led3",
 433                 .gpio                   = BALLOON3_PCF_GPIO_LED3,
 434                 .active_low             = 1,
 435         }, {
 436                 .name                   = "balloon3:orange:led4",
 437                 .gpio                   = BALLOON3_PCF_GPIO_LED4,
 438                 .active_low             = 1,
 439         }, {
 440                 .name                   = "balloon3:orange:led5",
 441                 .gpio                   = BALLOON3_PCF_GPIO_LED5,
 442                 .active_low             = 1,
 443         }, {
 444                 .name                   = "balloon3:red:led6",
 445                 .gpio                   = BALLOON3_PCF_GPIO_LED6,
 446                 .active_low             = 1,
 447         }, {
 448                 .name                   = "balloon3:red:led7",
 449                 .gpio                   = BALLOON3_PCF_GPIO_LED7,
 450                 .active_low             = 1,
 451         },
 452 };
 453
 454 static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
 455         .leds           = balloon3_pcf_gpio_leds,
 456         .num_leds       = ARRAY_SIZE(balloon3_pcf_gpio_leds),
 457 };
 458
 459 static struct platform_device balloon3_pcf_leds = {
 460         .name   = "leds-gpio",
 461         .id     = 1,
 462         .dev    = {
 463                 .platform_data  = &balloon3_pcf_gpio_led_info,
 464         }
 465 };
 466
 467 static void __init balloon3_leds_init(void)
 468 {
 469         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
 470         platform_device_register(&balloon3_leds);
 471         platform_device_register(&balloon3_pcf_leds);
 472 }
 473 #else
 474 static inline void balloon3_leds_init(void) {}
 475 #endif
 476
 477 /******************************************************************************
 478  * FPGA IRQ
 479  ******************************************************************************/
 480 static void balloon3_mask_irq(unsigned int irq)
 481 {
 482         int balloon3_irq = (irq - BALLOON3_IRQ(0));
 483         balloon3_irq_enabled &= ~(1 << balloon3_irq);
 484         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 485 }
 486
 487 static void balloon3_unmask_irq(unsigned int irq)
 488 {
 489         int balloon3_irq = (irq - BALLOON3_IRQ(0));
 490         balloon3_irq_enabled |= (1 << balloon3_irq);
 491         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 492 }
 493
 494 static struct irq_chip balloon3_irq_chip = {
 495         .name           = "FPGA",
 496         .ack            = balloon3_mask_irq,
 497         .mask           = balloon3_mask_irq,
 498         .unmask         = balloon3_unmask_irq,
 499 };
 500
 501 static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
 502 {
 503         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 504                                         balloon3_irq_enabled;
 505         do {
 506                 /* clear useless edge notification */
 507                 if (desc->chip->ack)
 508                         desc->chip->ack(BALLOON3_AUX_NIRQ);
 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                 set_irq_chip(irq, &balloon3_irq_chip);
 527                 set_irq_handler(irq, handle_level_irq);
 528                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 529         }
 530
 531         set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 532         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 mtd_info *mtd, int cmd, unsigned int ctrl)
 571 {
 572         struct nand_chip *this = mtd->priv;
 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->IO_ADDR_W);
 597 }
 598
 599 static void balloon3_nand_select_chip(struct mtd_info *mtd, 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 mtd_info *mtd)
 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 static const char *balloon3_part_probes[] = { "cmdlinepart", NULL };
 679
 680 struct platform_nand_data balloon3_nand_pdata = {
 681         .chip = {
 682                 .nr_chips       = 4,
 683                 .chip_offset    = 0,
 684                 .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
 685                 .partitions     = balloon3_partition_info,
 686                 .chip_delay     = 50,
 687                 .part_probe_types = balloon3_part_probes,
 688         },
 689         .ctrl = {
 690                 .hwcontrol      = 0,
 691                 .dev_ready      = balloon3_nand_dev_ready,
 692                 .select_chip    = balloon3_nand_select_chip,
 693                 .cmd_ctrl       = balloon3_nand_cmd_ctl,
 694                 .probe          = balloon3_nand_probe,
 695                 .remove         = balloon3_nand_remove,
 696         },
 697 };
 698
 699 static struct resource balloon3_nand_resource[] = {
 700         [0] = {
 701                 .start = BALLOON3_NAND_BASE,
 702                 .end   = BALLOON3_NAND_BASE + 0x4,
 703                 .flags = IORESOURCE_MEM,
 704         },
 705 };
 706
 707 static struct platform_device balloon3_nand = {
 708         .name           = "gen_nand",
 709         .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
 710         .resource       = balloon3_nand_resource,
 711         .id             = -1,
 712         .dev            = {
 713                 .platform_data = &balloon3_nand_pdata,
 714         }
 715 };
 716
 717 static void __init balloon3_nand_init(void)
 718 {
 719         platform_device_register(&balloon3_nand);
 720 }
 721 #else
 722 static inline void balloon3_nand_init(void) {}
 723 #endif
 724
 725 /******************************************************************************
 726  * Core power regulator
 727  ******************************************************************************/
 728 #if defined(CONFIG_REGULATOR_MAX1586) || \
 729     defined(CONFIG_REGULATOR_MAX1586_MODULE)
 730 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
 731         {
 732                 .supply = "vcc_core",
 733         }
 734 };
 735
 736 static struct regulator_init_data balloon3_max1587a_v3_info = {
 737         .constraints = {
 738                 .name           = "vcc_core range",
 739                 .min_uV         = 900000,
 740                 .max_uV         = 1705000,
 741                 .always_on      = 1,
 742                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 743         },
 744         .consumer_supplies      = balloon3_max1587a_consumers,
 745         .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
 746 };
 747
 748 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
 749         {
 750                 .name           = "vcc_core",
 751                 .id             = MAX1586_V3,
 752                 .platform_data  = &balloon3_max1587a_v3_info,
 753         }
 754 };
 755
 756 static struct max1586_platform_data balloon3_max1587a_info = {
 757         .subdevs     = balloon3_max1587a_subdevs,
 758         .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
 759         .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
 760 };
 761
 762 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
 763         {
 764                 I2C_BOARD_INFO("max1586", 0x14),
 765                 .platform_data  = &balloon3_max1587a_info,
 766         },
 767 };
 768
 769 static void __init balloon3_pmic_init(void)
 770 {
 771         pxa27x_set_i2c_power_info(NULL);
 772         i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
 773 }
 774 #else
 775 static inline void balloon3_pmic_init(void) {}
 776 #endif
 777
 778 /******************************************************************************
 779  * Machine init
 780  ******************************************************************************/
 781 static void __init balloon3_init(void)
 782 {
 783         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 784
 785         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 786
 787         pxa_set_ffuart_info(NULL);
 788         pxa_set_btuart_info(NULL);
 789         pxa_set_stuart_info(NULL);
 790
 791         balloon3_i2c_init();
 792         balloon3_irda_init();
 793         balloon3_lcd_init();
 794         balloon3_leds_init();
 795         balloon3_mmc_init();
 796         balloon3_nand_init();
 797         balloon3_nor_init();
 798         balloon3_pmic_init();
 799         balloon3_ts_init();
 800         balloon3_udc_init();
 801         balloon3_uhc_init();
 802         balloon3_cf_init();
 803 }
 804
 805 static struct map_desc balloon3_io_desc[] __initdata = {
 806         {       /* CPLD/FPGA */
 807                 .virtual        =  BALLOON3_FPGA_VIRT,
 808                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 809                 .length         = BALLOON3_FPGA_LENGTH,
 810                 .type           = MT_DEVICE,
 811         },
 812 };
 813
 814 static void __init balloon3_map_io(void)
 815 {
 816         pxa27x_map_io();
 817         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 818 }
 819
 820 MACHINE_START(BALLOON3, "Balloon3")
 821         /* Maintainer: Nick Bane. */
 822         .map_io         = balloon3_map_io,
 823         .nr_irqs        = BALLOON3_NR_IRQS,
 824         .init_irq       = balloon3_init_irq,
 825         .timer          = &pxa_timer,
 826         .init_machine   = balloon3_init,
 827         .boot_params    = PHYS_OFFSET + 0x100,
 828 MACHINE_END