arch/arm/mach-pxa/balloon3.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  linux/arch/arm/mach-pxa/balloon3.c
   4  *
   5  *  Support for Balloonboard.org Balloon3 board.
   6  *
   7  *  Author:     Nick Bane, Wookey, Jonathan McDowell
   8  *  Created:    June, 2006
   9  *  Copyright:  Toby Churchill Ltd
  10  *  Derived from mainstone.c, by Nico Pitre
  11  */
  12
  13 #include <linux/export.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/leds.h>
  18 #include <linux/sched.h>
  19 #include <linux/bitops.h>
  20 #include <linux/fb.h>
  21 #include <linux/gpio.h>
  22 #include <linux/ioport.h>
  23 #include <linux/ucb1400.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/types.h>
  26 #include <linux/platform_data/pcf857x.h>
  27 #include <linux/platform_data/i2c-pxa.h>
  28 #include <linux/mtd/platnand.h>
  29 #include <linux/mtd/physmap.h>
  30 #include <linux/regulator/max1586.h>
  31
  32 #include <asm/setup.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/irq.h>
  35 #include <linux/sizes.h>
  36
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/irq.h>
  40 #include <asm/mach/flash.h>
  41
  42 #include "pxa27x.h"
  43 #include <mach/balloon3.h>
  44 #include <mach/audio.h>
  45 #include <linux/platform_data/video-pxafb.h>
  46 #include <linux/platform_data/mmc-pxamci.h>
  47 #include "udc.h"
  48 #include "pxa27x-udc.h"
  49 #include <linux/platform_data/irda-pxaficp.h>
  50 #include <linux/platform_data/usb-ohci-pxa27x.h>
  51
  52 #include "generic.h"
  53 #include "devices.h"
  54
  55 /******************************************************************************
  56  * Pin configuration
  57  ******************************************************************************/
  58 static unsigned long balloon3_pin_config[] __initdata = {
  59         /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
  60         GPIO42_BTUART_RXD,
  61         GPIO43_BTUART_TXD,
  62         GPIO44_BTUART_CTS,
  63         GPIO45_BTUART_RTS,
  64
  65         /* Reset, configured as GPIO wakeup source */
  66         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  67 };
  68
  69 /******************************************************************************
  70  * Compatibility: Parameter parsing
  71  ******************************************************************************/
  72 static unsigned long balloon3_irq_enabled;
  73
  74 static unsigned long balloon3_features_present =
  75                 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
  76                 (1 << BALLOON3_FEATURE_AUDIO) |
  77                 (1 << BALLOON3_FEATURE_TOPPOLY);
  78
  79 int balloon3_has(enum balloon3_features feature)
  80 {
  81         return (balloon3_features_present & (1 << feature)) ? 1 : 0;
  82 }
  83 EXPORT_SYMBOL_GPL(balloon3_has);
  84
  85 int __init parse_balloon3_features(char *arg)
  86 {
  87         if (!arg)
  88                 return 0;
  89
  90         return kstrtoul(arg, 0, &balloon3_features_present);
  91 }
  92 early_param("balloon3_features", parse_balloon3_features);
  93
  94 /******************************************************************************
  95  * Compact Flash slot
  96  ******************************************************************************/
  97 #if     defined(CONFIG_PCMCIA_PXA2XX) || defined(CONFIG_PCMCIA_PXA2XX_MODULE)
  98 static unsigned long balloon3_cf_pin_config[] __initdata = {
  99         GPIO48_nPOE,
 100         GPIO49_nPWE,
 101         GPIO50_nPIOR,
 102         GPIO51_nPIOW,
 103         GPIO85_nPCE_1,
 104         GPIO54_nPCE_2,
 105         GPIO79_PSKTSEL,
 106         GPIO55_nPREG,
 107         GPIO56_nPWAIT,
 108         GPIO57_nIOIS16,
 109 };
 110
 111 static void __init balloon3_cf_init(void)
 112 {
 113         if (!balloon3_has(BALLOON3_FEATURE_CF))
 114                 return;
 115
 116         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_cf_pin_config));
 117 }
 118 #else
 119 static inline void balloon3_cf_init(void) {}
 120 #endif
 121
 122 /******************************************************************************
 123  * NOR Flash
 124  ******************************************************************************/
 125 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 126 static struct mtd_partition balloon3_nor_partitions[] = {
 127         {
 128                 .name           = "Flash",
 129                 .offset         = 0x00000000,
 130                 .size           = MTDPART_SIZ_FULL,
 131         }
 132 };
 133
 134 static struct physmap_flash_data balloon3_flash_data[] = {
 135         {
 136                 .width          = 2,    /* bankwidth in bytes */
 137                 .parts          = balloon3_nor_partitions,
 138                 .nr_parts       = ARRAY_SIZE(balloon3_nor_partitions)
 139         }
 140 };
 141
 142 static struct resource balloon3_flash_resource = {
 143         .start  = PXA_CS0_PHYS,
 144         .end    = PXA_CS0_PHYS + SZ_64M - 1,
 145         .flags  = IORESOURCE_MEM,
 146 };
 147
 148 static struct platform_device balloon3_flash = {
 149         .name           = "physmap-flash",
 150         .id             = 0,
 151         .resource       = &balloon3_flash_resource,
 152         .num_resources  = 1,
 153         .dev            = {
 154                 .platform_data = balloon3_flash_data,
 155         },
 156 };
 157 static void __init balloon3_nor_init(void)
 158 {
 159         platform_device_register(&balloon3_flash);
 160 }
 161 #else
 162 static inline void balloon3_nor_init(void) {}
 163 #endif
 164
 165 /******************************************************************************
 166  * Audio and Touchscreen
 167  ******************************************************************************/
 168 #if     defined(CONFIG_TOUCHSCREEN_UCB1400) || \
 169         defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 170 static unsigned long balloon3_ac97_pin_config[] __initdata = {
 171         GPIO28_AC97_BITCLK,
 172         GPIO29_AC97_SDATA_IN_0,
 173         GPIO30_AC97_SDATA_OUT,
 174         GPIO31_AC97_SYNC,
 175         GPIO113_AC97_nRESET,
 176         GPIO95_GPIO,
 177 };
 178
 179 static struct ucb1400_pdata vpac270_ucb1400_pdata = {
 180         .irq            = PXA_GPIO_TO_IRQ(BALLOON3_GPIO_CODEC_IRQ),
 181 };
 182
 183
 184 static struct platform_device balloon3_ucb1400_device = {
 185         .name           = "ucb1400_core",
 186         .id             = -1,
 187         .dev            = {
 188                 .platform_data = &vpac270_ucb1400_pdata,
 189         },
 190 };
 191
 192 static void __init balloon3_ts_init(void)
 193 {
 194         if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
 195                 return;
 196
 197         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config));
 198         pxa_set_ac97_info(NULL);
 199         platform_device_register(&balloon3_ucb1400_device);
 200 }
 201 #else
 202 static inline void balloon3_ts_init(void) {}
 203 #endif
 204
 205 /******************************************************************************
 206  * Framebuffer
 207  ******************************************************************************/
 208 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 209 static unsigned long balloon3_lcd_pin_config[] __initdata = {
 210         GPIOxx_LCD_TFT_16BPP,
 211         GPIO99_GPIO,
 212 };
 213
 214 static struct pxafb_mode_info balloon3_lcd_modes[] = {
 215         {
 216                 .pixclock               = 38000,
 217                 .xres                   = 480,
 218                 .yres                   = 640,
 219                 .bpp                    = 16,
 220                 .hsync_len              = 8,
 221                 .left_margin            = 8,
 222                 .right_margin           = 8,
 223                 .vsync_len              = 2,
 224                 .upper_margin           = 4,
 225                 .lower_margin           = 5,
 226                 .sync                   = 0,
 227         },
 228 };
 229
 230 static struct pxafb_mach_info balloon3_lcd_screen = {
 231         .modes                  = balloon3_lcd_modes,
 232         .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
 233         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 234 };
 235
 236 static void balloon3_backlight_power(int on)
 237 {
 238         gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
 239 }
 240
 241 static void __init balloon3_lcd_init(void)
 242 {
 243         int ret;
 244
 245         if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
 246                 return;
 247
 248         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
 249
 250         ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
 251         if (ret) {
 252                 pr_err("Requesting BKL-ON GPIO failed!\n");
 253                 goto err;
 254         }
 255
 256         ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
 257         if (ret) {
 258                 pr_err("Setting BKL-ON GPIO direction failed!\n");
 259                 goto err2;
 260         }
 261
 262         balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
 263         pxa_set_fb_info(NULL, &balloon3_lcd_screen);
 264         return;
 265
 266 err2:
 267         gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
 268 err:
 269         return;
 270 }
 271 #else
 272 static inline void balloon3_lcd_init(void) {}
 273 #endif
 274
 275 /******************************************************************************
 276  * SD/MMC card controller
 277  ******************************************************************************/
 278 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 279 static unsigned long balloon3_mmc_pin_config[] __initdata = {
 280         GPIO32_MMC_CLK,
 281         GPIO92_MMC_DAT_0,
 282         GPIO109_MMC_DAT_1,
 283         GPIO110_MMC_DAT_2,
 284         GPIO111_MMC_DAT_3,
 285         GPIO112_MMC_CMD,
 286 };
 287
 288 static struct pxamci_platform_data balloon3_mci_platform_data = {
 289         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 290         .detect_delay_ms        = 200,
 291 };
 292
 293 static void __init balloon3_mmc_init(void)
 294 {
 295         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
 296         pxa_set_mci_info(&balloon3_mci_platform_data);
 297 }
 298 #else
 299 static inline void balloon3_mmc_init(void) {}
 300 #endif
 301
 302 /******************************************************************************
 303  * USB Gadget
 304  ******************************************************************************/
 305 #if defined(CONFIG_USB_PXA27X)||defined(CONFIG_USB_PXA27X_MODULE)
 306 static void balloon3_udc_command(int cmd)
 307 {
 308         if (cmd == PXA2XX_UDC_CMD_CONNECT)
 309                 UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
 310         else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
 311                 UP2OCR &= ~UP2OCR_DPPUE;
 312 }
 313
 314 static int balloon3_udc_is_connected(void)
 315 {
 316         return 1;
 317 }
 318
 319 static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
 320         .udc_command            = balloon3_udc_command,
 321         .udc_is_connected       = balloon3_udc_is_connected,
 322         .gpio_pullup            = -1,
 323 };
 324
 325 static void __init balloon3_udc_init(void)
 326 {
 327         pxa_set_udc_info(&balloon3_udc_info);
 328 }
 329 #else
 330 static inline void balloon3_udc_init(void) {}
 331 #endif
 332
 333 /******************************************************************************
 334  * IrDA
 335  ******************************************************************************/
 336 #if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
 337 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 338         .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
 339 };
 340
 341 static void __init balloon3_irda_init(void)
 342 {
 343         pxa_set_ficp_info(&balloon3_ficp_platform_data);
 344 }
 345 #else
 346 static inline void balloon3_irda_init(void) {}
 347 #endif
 348
 349 /******************************************************************************
 350  * USB Host
 351  ******************************************************************************/
 352 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 353 static unsigned long balloon3_uhc_pin_config[] __initdata = {
 354         GPIO88_USBH1_PWR,
 355         GPIO89_USBH1_PEN,
 356 };
 357
 358 static struct pxaohci_platform_data balloon3_ohci_info = {
 359         .port_mode      = PMM_PERPORT_MODE,
 360         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 361 };
 362
 363 static void __init balloon3_uhc_init(void)
 364 {
 365         if (!balloon3_has(BALLOON3_FEATURE_OHCI))
 366                 return;
 367         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
 368         pxa_set_ohci_info(&balloon3_ohci_info);
 369 }
 370 #else
 371 static inline void balloon3_uhc_init(void) {}
 372 #endif
 373
 374 /******************************************************************************
 375  * LEDs
 376  ******************************************************************************/
 377 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 378 static unsigned long balloon3_led_pin_config[] __initdata = {
 379         GPIO9_GPIO,     /* NAND activity LED */
 380         GPIO10_GPIO,    /* Heartbeat LED */
 381 };
 382
 383 struct gpio_led balloon3_gpio_leds[] = {
 384         {
 385                 .name                   = "balloon3:green:idle",
 386                 .default_trigger        = "heartbeat",
 387                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
 388                 .active_low             = 1,
 389         }, {
 390                 .name                   = "balloon3:green:nand",
 391                 .default_trigger        = "nand-disk",
 392                 .gpio                   = BALLOON3_GPIO_LED_NAND,
 393                 .active_low             = 1,
 394         },
 395 };
 396
 397 static struct gpio_led_platform_data balloon3_gpio_led_info = {
 398         .leds           = balloon3_gpio_leds,
 399         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 400 };
 401
 402 static struct platform_device balloon3_leds = {
 403         .name   = "leds-gpio",
 404         .id     = 0,
 405         .dev    = {
 406                 .platform_data  = &balloon3_gpio_led_info,
 407         }
 408 };
 409
 410 struct gpio_led balloon3_pcf_gpio_leds[] = {
 411         {
 412                 .name                   = "balloon3:green:led0",
 413                 .gpio                   = BALLOON3_PCF_GPIO_LED0,
 414                 .active_low             = 1,
 415         }, {
 416                 .name                   = "balloon3:green:led1",
 417                 .gpio                   = BALLOON3_PCF_GPIO_LED1,
 418                 .active_low             = 1,
 419         }, {
 420                 .name                   = "balloon3:orange:led2",
 421                 .gpio                   = BALLOON3_PCF_GPIO_LED2,
 422                 .active_low             = 1,
 423         }, {
 424                 .name                   = "balloon3:orange:led3",
 425                 .gpio                   = BALLOON3_PCF_GPIO_LED3,
 426                 .active_low             = 1,
 427         }, {
 428                 .name                   = "balloon3:orange:led4",
 429                 .gpio                   = BALLOON3_PCF_GPIO_LED4,
 430                 .active_low             = 1,
 431         }, {
 432                 .name                   = "balloon3:orange:led5",
 433                 .gpio                   = BALLOON3_PCF_GPIO_LED5,
 434                 .active_low             = 1,
 435         }, {
 436                 .name                   = "balloon3:red:led6",
 437                 .gpio                   = BALLOON3_PCF_GPIO_LED6,
 438                 .active_low             = 1,
 439         }, {
 440                 .name                   = "balloon3:red:led7",
 441                 .gpio                   = BALLOON3_PCF_GPIO_LED7,
 442                 .active_low             = 1,
 443         },
 444 };
 445
 446 static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
 447         .leds           = balloon3_pcf_gpio_leds,
 448         .num_leds       = ARRAY_SIZE(balloon3_pcf_gpio_leds),
 449 };
 450
 451 static struct platform_device balloon3_pcf_leds = {
 452         .name   = "leds-gpio",
 453         .id     = 1,
 454         .dev    = {
 455                 .platform_data  = &balloon3_pcf_gpio_led_info,
 456         }
 457 };
 458
 459 static void __init balloon3_leds_init(void)
 460 {
 461         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
 462         platform_device_register(&balloon3_leds);
 463         platform_device_register(&balloon3_pcf_leds);
 464 }
 465 #else
 466 static inline void balloon3_leds_init(void) {}
 467 #endif
 468
 469 /******************************************************************************
 470  * FPGA IRQ
 471  ******************************************************************************/
 472 static void balloon3_mask_irq(struct irq_data *d)
 473 {
 474         int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
 475         balloon3_irq_enabled &= ~(1 << balloon3_irq);
 476         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 477 }
 478
 479 static void balloon3_unmask_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 struct irq_chip balloon3_irq_chip = {
 487         .name           = "FPGA",
 488         .irq_ack        = balloon3_mask_irq,
 489         .irq_mask       = balloon3_mask_irq,
 490         .irq_unmask     = balloon3_unmask_irq,
 491 };
 492
 493 static void balloon3_irq_handler(struct irq_desc *desc)
 494 {
 495         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 496                                         balloon3_irq_enabled;
 497         do {
 498                 struct irq_data *d = irq_desc_get_irq_data(desc);
 499                 struct irq_chip *chip = irq_desc_get_chip(desc);
 500                 unsigned int irq;
 501
 502                 /* clear useless edge notification */
 503                 if (chip->irq_ack)
 504                         chip->irq_ack(d);
 505
 506                 while (pending) {
 507                         irq = BALLOON3_IRQ(0) + __ffs(pending);
 508                         generic_handle_irq(irq);
 509                         pending &= pending - 1;
 510                 }
 511                 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 512                                 balloon3_irq_enabled;
 513         } while (pending);
 514 }
 515
 516 static void __init balloon3_init_irq(void)
 517 {
 518         int irq;
 519
 520         pxa27x_init_irq();
 521         /* setup extra Balloon3 irqs */
 522         for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
 523                 irq_set_chip_and_handler(irq, &balloon3_irq_chip,
 524                                          handle_level_irq);
 525                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 526         }
 527
 528         irq_set_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 529         irq_set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
 530
 531         pr_debug("%s: chained handler installed - irq %d automatically "
 532                 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
 533 }
 534
 535 /******************************************************************************
 536  * GPIO expander
 537  ******************************************************************************/
 538 #if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
 539 static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
 540         .gpio_base      = BALLOON3_PCF_GPIO_BASE,
 541         .n_latch        = 0,
 542         .setup          = NULL,
 543         .teardown       = NULL,
 544         .context        = NULL,
 545 };
 546
 547 static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
 548         {
 549                 I2C_BOARD_INFO("pcf8574a", 0x38),
 550                 .platform_data  = &balloon3_pcf857x_pdata,
 551         },
 552 };
 553
 554 static void __init balloon3_i2c_init(void)
 555 {
 556         pxa_set_i2c_info(NULL);
 557         i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
 558 }
 559 #else
 560 static inline void balloon3_i2c_init(void) {}
 561 #endif
 562
 563 /******************************************************************************
 564  * NAND
 565  ******************************************************************************/
 566 #if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 567 static void balloon3_nand_cmd_ctl(struct nand_chip *this, int cmd,
 568                                   unsigned int ctrl)
 569 {
 570         uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
 571
 572         if (ctrl & NAND_CTRL_CHANGE) {
 573                 if (ctrl & NAND_CLE)
 574                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
 575                 else
 576                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
 577
 578                 if (ctrl & NAND_ALE)
 579                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
 580                 else
 581                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
 582
 583                 if (balloon3_ctl_clr)
 584                         __raw_writel(balloon3_ctl_clr,
 585                                 BALLOON3_NAND_CONTROL_REG);
 586                 if (balloon3_ctl_set)
 587                         __raw_writel(balloon3_ctl_set,
 588                                 BALLOON3_NAND_CONTROL_REG +
 589                                 BALLOON3_FPGA_SETnCLR);
 590         }
 591
 592         if (cmd != NAND_CMD_NONE)
 593                 writeb(cmd, this->legacy.IO_ADDR_W);
 594 }
 595
 596 static void balloon3_nand_select_chip(struct nand_chip *this, int chip)
 597 {
 598         if (chip < 0 || chip > 3)
 599                 return;
 600
 601         /* Assert all nCE lines */
 602         __raw_writew(
 603                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 604                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
 605                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 606
 607         /* Deassert correct nCE line */
 608         __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
 609                 BALLOON3_NAND_CONTROL_REG);
 610 }
 611
 612 static int balloon3_nand_dev_ready(struct nand_chip *this)
 613 {
 614         return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
 615 }
 616
 617 static int balloon3_nand_probe(struct platform_device *pdev)
 618 {
 619         uint16_t ver;
 620         int ret;
 621
 622         __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
 623                 BALLOON3_NAND_CONTROL2_REG + BALLOON3_FPGA_SETnCLR);
 624
 625         ver = __raw_readw(BALLOON3_FPGA_VER);
 626         if (ver < 0x4f08)
 627                 pr_warn("The FPGA code, version 0x%04x, is too old. "
 628                         "NAND support might be broken in this version!", ver);
 629
 630         /* Power up the NAND chips */
 631         ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
 632         if (ret)
 633                 goto err1;
 634
 635         ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
 636         if (ret)
 637                 goto err2;
 638
 639         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
 640
 641         /* Deassert all nCE lines and write protect line */
 642         __raw_writel(
 643                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
 644                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
 645                 BALLOON3_NAND_CONTROL_FLWP,
 646                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
 647         return 0;
 648
 649 err2:
 650         gpio_free(BALLOON3_GPIO_RUN_NAND);
 651 err1:
 652         return ret;
 653 }
 654
 655 static void balloon3_nand_remove(struct platform_device *pdev)
 656 {
 657         /* Power down the NAND chips */
 658         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
 659         gpio_free(BALLOON3_GPIO_RUN_NAND);
 660 }
 661
 662 static struct mtd_partition balloon3_partition_info[] = {
 663         [0] = {
 664                 .name   = "Boot",
 665                 .offset = 0,
 666                 .size   = SZ_4M,
 667         },
 668         [1] = {
 669                 .name   = "RootFS",
 670                 .offset = MTDPART_OFS_APPEND,
 671                 .size   = MTDPART_SIZ_FULL
 672         },
 673 };
 674
 675 struct platform_nand_data balloon3_nand_pdata = {
 676         .chip = {
 677                 .nr_chips       = 4,
 678                 .chip_offset    = 0,
 679                 .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
 680                 .partitions     = balloon3_partition_info,
 681                 .chip_delay     = 50,
 682         },
 683         .ctrl = {
 684                 .dev_ready      = balloon3_nand_dev_ready,
 685                 .select_chip    = balloon3_nand_select_chip,
 686                 .cmd_ctrl       = balloon3_nand_cmd_ctl,
 687                 .probe          = balloon3_nand_probe,
 688                 .remove         = balloon3_nand_remove,
 689         },
 690 };
 691
 692 static struct resource balloon3_nand_resource[] = {
 693         [0] = {
 694                 .start = BALLOON3_NAND_BASE,
 695                 .end   = BALLOON3_NAND_BASE + 0x4,
 696                 .flags = IORESOURCE_MEM,
 697         },
 698 };
 699
 700 static struct platform_device balloon3_nand = {
 701         .name           = "gen_nand",
 702         .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
 703         .resource       = balloon3_nand_resource,
 704         .id             = -1,
 705         .dev            = {
 706                 .platform_data = &balloon3_nand_pdata,
 707         }
 708 };
 709
 710 static void __init balloon3_nand_init(void)
 711 {
 712         platform_device_register(&balloon3_nand);
 713 }
 714 #else
 715 static inline void balloon3_nand_init(void) {}
 716 #endif
 717
 718 /******************************************************************************
 719  * Core power regulator
 720  ******************************************************************************/
 721 #if defined(CONFIG_REGULATOR_MAX1586) || \
 722     defined(CONFIG_REGULATOR_MAX1586_MODULE)
 723 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
 724         REGULATOR_SUPPLY("vcc_core", NULL),
 725 };
 726
 727 static struct regulator_init_data balloon3_max1587a_v3_info = {
 728         .constraints = {
 729                 .name           = "vcc_core range",
 730                 .min_uV         = 900000,
 731                 .max_uV         = 1705000,
 732                 .always_on      = 1,
 733                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 734         },
 735         .consumer_supplies      = balloon3_max1587a_consumers,
 736         .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
 737 };
 738
 739 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
 740         {
 741                 .name           = "vcc_core",
 742                 .id             = MAX1586_V3,
 743                 .platform_data  = &balloon3_max1587a_v3_info,
 744         }
 745 };
 746
 747 static struct max1586_platform_data balloon3_max1587a_info = {
 748         .subdevs     = balloon3_max1587a_subdevs,
 749         .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
 750         .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
 751 };
 752
 753 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
 754         {
 755                 I2C_BOARD_INFO("max1586", 0x14),
 756                 .platform_data  = &balloon3_max1587a_info,
 757         },
 758 };
 759
 760 static void __init balloon3_pmic_init(void)
 761 {
 762         pxa27x_set_i2c_power_info(NULL);
 763         i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
 764 }
 765 #else
 766 static inline void balloon3_pmic_init(void) {}
 767 #endif
 768
 769 /******************************************************************************
 770  * Machine init
 771  ******************************************************************************/
 772 static void __init balloon3_init(void)
 773 {
 774         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 775
 776         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 777
 778         pxa_set_ffuart_info(NULL);
 779         pxa_set_btuart_info(NULL);
 780         pxa_set_stuart_info(NULL);
 781
 782         balloon3_i2c_init();
 783         balloon3_irda_init();
 784         balloon3_lcd_init();
 785         balloon3_leds_init();
 786         balloon3_mmc_init();
 787         balloon3_nand_init();
 788         balloon3_nor_init();
 789         balloon3_pmic_init();
 790         balloon3_ts_init();
 791         balloon3_udc_init();
 792         balloon3_uhc_init();
 793         balloon3_cf_init();
 794 }
 795
 796 static struct map_desc balloon3_io_desc[] __initdata = {
 797         {       /* CPLD/FPGA */
 798                 .virtual        = (unsigned long)BALLOON3_FPGA_VIRT,
 799                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 800                 .length         = BALLOON3_FPGA_LENGTH,
 801                 .type           = MT_DEVICE,
 802         },
 803 };
 804
 805 static void __init balloon3_map_io(void)
 806 {
 807         pxa27x_map_io();
 808         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 809 }
 810
 811 MACHINE_START(BALLOON3, "Balloon3")
 812         /* Maintainer: Nick Bane. */
 813         .map_io         = balloon3_map_io,
 814         .nr_irqs        = BALLOON3_NR_IRQS,
 815         .init_irq       = balloon3_init_irq,
 816         .handle_irq     = pxa27x_handle_irq,
 817         .init_time      = pxa_timer_init,
 818         .init_machine   = balloon3_init,
 819         .atag_offset    = 0x100,
 820         .restart        = pxa_restart,
 821 MACHINE_END