arch/arm/mach-pxa/lubbock.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/lubbock.c
   3  *
   4  *  Support for the Intel DBPXA250 Development Platform.
   5  *
   6  *  Author:     Nicolas Pitre
   7  *  Created:    Jun 15, 2001
   8  *  Copyright:  MontaVista Software Inc.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License version 2 as
  12  *  published by the Free Software Foundation.
  13  */
  14 #include <linux/gpio.h>
  15 #include <linux/gpio/machine.h>
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/init.h>
  19 #include <linux/io.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/syscore_ops.h>
  22 #include <linux/major.h>
  23 #include <linux/fb.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/smc91x.h>
  28 #include <linux/slab.h>
  29 #include <linux/leds.h>
  30
  31 #include <linux/spi/spi.h>
  32 #include <linux/spi/ads7846.h>
  33 #include <linux/spi/pxa2xx_spi.h>
  34
  35 #include <asm/setup.h>
  36 #include <asm/memory.h>
  37 #include <asm/mach-types.h>
  38 #include <mach/hardware.h>
  39 #include <asm/irq.h>
  40 #include <asm/sizes.h>
  41
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/map.h>
  44 #include <asm/mach/irq.h>
  45 #include <asm/mach/flash.h>
  46
  47 #include <asm/hardware/sa1111.h>
  48
  49 #include <mach/pxa25x.h>
  50 #include <mach/audio.h>
  51 #include <mach/lubbock.h>
  52 #include <mach/udc.h>
  53 #include <linux/platform_data/irda-pxaficp.h>
  54 #include <linux/platform_data/video-pxafb.h>
  55 #include <linux/platform_data/mmc-pxamci.h>
  56 #include <mach/pm.h>
  57 #include <mach/smemc.h>
  58
  59 #include "generic.h"
  60 #include "devices.h"
  61
  62 static unsigned long lubbock_pin_config[] __initdata = {
  63         GPIO15_nCS_1,   /* CS1 - Flash */
  64         GPIO78_nCS_2,   /* CS2 - Baseboard FGPA */
  65         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
  66         GPIO80_nCS_4,   /* CS4 - SA1111 */
  67
  68         /* SSP data pins */
  69         GPIO23_SSP1_SCLK,
  70         GPIO25_SSP1_TXD,
  71         GPIO26_SSP1_RXD,
  72
  73         /* AC97 */
  74         GPIO28_AC97_BITCLK,
  75         GPIO29_AC97_SDATA_IN_0,
  76         GPIO30_AC97_SDATA_OUT,
  77         GPIO31_AC97_SYNC,
  78
  79         /* LCD - 16bpp DSTN */
  80         GPIOxx_LCD_DSTN_16BPP,
  81
  82         /* BTUART */
  83         GPIO42_BTUART_RXD,
  84         GPIO43_BTUART_TXD,
  85         GPIO44_BTUART_CTS,
  86         GPIO45_BTUART_RTS,
  87
  88         /* PC Card */
  89         GPIO48_nPOE,
  90         GPIO49_nPWE,
  91         GPIO50_nPIOR,
  92         GPIO51_nPIOW,
  93         GPIO52_nPCE_1,
  94         GPIO53_nPCE_2,
  95         GPIO54_nPSKTSEL,
  96         GPIO55_nPREG,
  97         GPIO56_nPWAIT,
  98         GPIO57_nIOIS16,
  99
 100         /* MMC */
 101         GPIO6_MMC_CLK,
 102         GPIO8_MMC_CS0,
 103
 104         /* SA1111 chip */
 105         GPIO11_3_6MHz,
 106
 107         /* wakeup */
 108         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
 109 };
 110
 111 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
 112 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
 113
 114 void lubbock_set_hexled(uint32_t value)
 115 {
 116         LUB_HEXLED = value;
 117 }
 118
 119 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
 120 {
 121         unsigned long flags;
 122
 123         local_irq_save(flags);
 124         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
 125         local_irq_restore(flags);
 126 }
 127 EXPORT_SYMBOL(lubbock_set_misc_wr);
 128
 129 static int lubbock_udc_is_connected(void)
 130 {
 131         return (LUB_MISC_RD & (1 << 9)) == 0;
 132 }
 133
 134 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 135         .udc_is_connected       = lubbock_udc_is_connected,
 136         // no D+ pullup; lubbock can't connect/disconnect in software
 137 };
 138
 139 static struct resource sa1111_resources[] = {
 140         [0] = {
 141                 .start  = 0x10000000,
 142                 .end    = 0x10001fff,
 143                 .flags  = IORESOURCE_MEM,
 144         },
 145         [1] = {
 146                 .start  = LUBBOCK_SA1111_IRQ,
 147                 .end    = LUBBOCK_SA1111_IRQ,
 148                 .flags  = IORESOURCE_IRQ,
 149         },
 150 };
 151
 152 static struct sa1111_platform_data sa1111_info = {
 153         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
 154         .disable_devs   = SA1111_DEVID_SAC,
 155 };
 156
 157 static struct platform_device sa1111_device = {
 158         .name           = "sa1111",
 159         .id             = -1,
 160         .num_resources  = ARRAY_SIZE(sa1111_resources),
 161         .resource       = sa1111_resources,
 162         .dev            = {
 163                 .platform_data  = &sa1111_info,
 164         },
 165 };
 166
 167 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
 168  * you can select it to replace the ucb1400 by switching the touchscreen cable
 169  * (to J5) and poking board registers (as done below).  Else it's only useful
 170  * for the temperature sensors.
 171  */
 172 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 173         .num_chipselect = 1,
 174 };
 175
 176 static int lubbock_ads7846_pendown_state(void)
 177 {
 178         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
 179         return 0;
 180 }
 181
 182 static struct ads7846_platform_data ads_info = {
 183         .model                  = 7846,
 184         .vref_delay_usecs       = 100,          /* internal, no cap */
 185         .get_pendown_state      = lubbock_ads7846_pendown_state,
 186         // .x_plate_ohms                = 500,  /* GUESS! */
 187         // .y_plate_ohms                = 500,  /* GUESS! */
 188 };
 189
 190 static void ads7846_cs(u32 command)
 191 {
 192         static const unsigned   TS_nCS = 1 << 11;
 193         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
 194 }
 195
 196 static struct pxa2xx_spi_chip ads_hw = {
 197         .tx_threshold           = 1,
 198         .rx_threshold           = 2,
 199         .cs_control             = ads7846_cs,
 200 };
 201
 202 static struct spi_board_info spi_board_info[] __initdata = { {
 203         .modalias       = "ads7846",
 204         .platform_data  = &ads_info,
 205         .controller_data = &ads_hw,
 206         .irq            = LUBBOCK_BB_IRQ,
 207         .max_speed_hz   = 120000 /* max sample rate at 3V */
 208                                 * 26 /* command + data + overhead */,
 209         .bus_num        = 1,
 210         .chip_select    = 0,
 211 },
 212 };
 213
 214 static struct resource smc91x_resources[] = {
 215         [0] = {
 216                 .name   = "smc91x-regs",
 217                 .start  = 0x0c000c00,
 218                 .end    = 0x0c0fffff,
 219                 .flags  = IORESOURCE_MEM,
 220         },
 221         [1] = {
 222                 .start  = LUBBOCK_ETH_IRQ,
 223                 .end    = LUBBOCK_ETH_IRQ,
 224                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 225         },
 226         [2] = {
 227                 .name   = "smc91x-attrib",
 228                 .start  = 0x0e000000,
 229                 .end    = 0x0e0fffff,
 230                 .flags  = IORESOURCE_MEM,
 231         },
 232 };
 233
 234 static struct smc91x_platdata lubbock_smc91x_info = {
 235         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
 236 };
 237
 238 static struct platform_device smc91x_device = {
 239         .name           = "smc91x",
 240         .id             = -1,
 241         .num_resources  = ARRAY_SIZE(smc91x_resources),
 242         .resource       = smc91x_resources,
 243         .dev            = {
 244                 .platform_data = &lubbock_smc91x_info,
 245         },
 246 };
 247
 248 static struct resource flash_resources[] = {
 249         [0] = {
 250                 .start  = 0x00000000,
 251                 .end    = SZ_64M - 1,
 252                 .flags  = IORESOURCE_MEM,
 253         },
 254         [1] = {
 255                 .start  = 0x04000000,
 256                 .end    = 0x04000000 + SZ_64M - 1,
 257                 .flags  = IORESOURCE_MEM,
 258         },
 259 };
 260
 261 static struct mtd_partition lubbock_partitions[] = {
 262         {
 263                 .name =         "Bootloader",
 264                 .size =         0x00040000,
 265                 .offset =       0,
 266                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 267         },{
 268                 .name =         "Kernel",
 269                 .size =         0x00100000,
 270                 .offset =       0x00040000,
 271         },{
 272                 .name =         "Filesystem",
 273                 .size =         MTDPART_SIZ_FULL,
 274                 .offset =       0x00140000
 275         }
 276 };
 277
 278 static struct flash_platform_data lubbock_flash_data[2] = {
 279         {
 280                 .map_name       = "cfi_probe",
 281                 .parts          = lubbock_partitions,
 282                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
 283         }, {
 284                 .map_name       = "cfi_probe",
 285                 .parts          = NULL,
 286                 .nr_parts       = 0,
 287         }
 288 };
 289
 290 static struct platform_device lubbock_flash_device[2] = {
 291         {
 292                 .name           = "pxa2xx-flash",
 293                 .id             = 0,
 294                 .dev = {
 295                         .platform_data = &lubbock_flash_data[0],
 296                 },
 297                 .resource = &flash_resources[0],
 298                 .num_resources = 1,
 299         },
 300         {
 301                 .name           = "pxa2xx-flash",
 302                 .id             = 1,
 303                 .dev = {
 304                         .platform_data = &lubbock_flash_data[1],
 305                 },
 306                 .resource = &flash_resources[1],
 307                 .num_resources = 1,
 308         },
 309 };
 310
 311 static struct resource lubbock_cplds_resources[] = {
 312         [0] = {
 313                 .start  = LUBBOCK_FPGA_PHYS + 0xc0,
 314                 .end    = LUBBOCK_FPGA_PHYS + 0xe0 - 1,
 315                 .flags  = IORESOURCE_MEM,
 316         },
 317         [1] = {
 318                 .start  = PXA_GPIO_TO_IRQ(0),
 319                 .end    = PXA_GPIO_TO_IRQ(0),
 320                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 321         },
 322         [2] = {
 323                 .start  = LUBBOCK_IRQ(0),
 324                 .end    = LUBBOCK_IRQ(6),
 325                 .flags  = IORESOURCE_IRQ,
 326         },
 327 };
 328
 329 static struct platform_device lubbock_cplds_device = {
 330         .name           = "pxa_cplds_irqs",
 331         .id             = -1,
 332         .resource       = &lubbock_cplds_resources[0],
 333         .num_resources  = 3,
 334 };
 335
 336
 337 static struct platform_device *devices[] __initdata = {
 338         &sa1111_device,
 339         &smc91x_device,
 340         &lubbock_flash_device[0],
 341         &lubbock_flash_device[1],
 342         &lubbock_cplds_device,
 343 };
 344
 345 static struct pxafb_mode_info sharp_lm8v31_mode = {
 346         .pixclock       = 270000,
 347         .xres           = 640,
 348         .yres           = 480,
 349         .bpp            = 16,
 350         .hsync_len      = 1,
 351         .left_margin    = 3,
 352         .right_margin   = 3,
 353         .vsync_len      = 1,
 354         .upper_margin   = 0,
 355         .lower_margin   = 0,
 356         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 357         .cmap_greyscale = 0,
 358 };
 359
 360 static struct pxafb_mach_info sharp_lm8v31 = {
 361         .modes          = &sharp_lm8v31_mode,
 362         .num_modes      = 1,
 363         .cmap_inverse   = 0,
 364         .cmap_static    = 0,
 365         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 366                           LCD_AC_BIAS_FREQ(255),
 367 };
 368
 369 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 370
 371 static void lubbock_mmc_poll(unsigned long);
 372 static irq_handler_t mmc_detect_int;
 373
 374 static struct timer_list mmc_timer = {
 375         .function       = lubbock_mmc_poll,
 376 };
 377
 378 static void lubbock_mmc_poll(unsigned long data)
 379 {
 380         unsigned long flags;
 381
 382         /* clear any previous irq state, then ... */
 383         local_irq_save(flags);
 384         LUB_IRQ_SET_CLR &= ~(1 << 0);
 385         local_irq_restore(flags);
 386
 387         /* poll until mmc/sd card is removed */
 388         if (LUB_IRQ_SET_CLR & (1 << 0))
 389                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 390         else {
 391                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
 392                 enable_irq(LUBBOCK_SD_IRQ);
 393         }
 394 }
 395
 396 static irqreturn_t lubbock_detect_int(int irq, void *data)
 397 {
 398         /* IRQ is level triggered; disable, and poll for removal */
 399         disable_irq(irq);
 400         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 401
 402         return mmc_detect_int(irq, data);
 403 }
 404
 405 static int lubbock_mci_init(struct device *dev,
 406                 irq_handler_t detect_int,
 407                 void *data)
 408 {
 409         /* detect card insert/eject */
 410         mmc_detect_int = detect_int;
 411         init_timer(&mmc_timer);
 412         mmc_timer.data = (unsigned long) data;
 413         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 414                            0, "lubbock-sd-detect", data);
 415 }
 416
 417 static int lubbock_mci_get_ro(struct device *dev)
 418 {
 419         return (LUB_MISC_RD & (1 << 2)) != 0;
 420 }
 421
 422 static void lubbock_mci_exit(struct device *dev, void *data)
 423 {
 424         free_irq(LUBBOCK_SD_IRQ, data);
 425         del_timer_sync(&mmc_timer);
 426 }
 427
 428 static struct pxamci_platform_data lubbock_mci_platform_data = {
 429         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 430         .detect_delay_ms        = 10,
 431         .init                   = lubbock_mci_init,
 432         .get_ro                 = lubbock_mci_get_ro,
 433         .exit                   = lubbock_mci_exit,
 434         .gpio_card_detect       = -1,
 435         .gpio_card_ro           = -1,
 436         .gpio_power             = -1,
 437 };
 438
 439 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 440 {
 441         unsigned long flags;
 442
 443         local_irq_save(flags);
 444         if (mode & IR_SIRMODE) {
 445                 LUB_MISC_WR &= ~(1 << 4);
 446         } else if (mode & IR_FIRMODE) {
 447                 LUB_MISC_WR |= 1 << 4;
 448         }
 449         pxa2xx_transceiver_mode(dev, mode);
 450         local_irq_restore(flags);
 451 }
 452
 453 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 454         .gpio_pwdown            = -1,
 455         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
 456         .transceiver_mode       = lubbock_irda_transceiver_mode,
 457 };
 458
 459 static void __init lubbock_init(void)
 460 {
 461         int flashboot = (LUB_CONF_SWITCHES & 1);
 462
 463         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
 464
 465         pxa_set_ffuart_info(NULL);
 466         pxa_set_btuart_info(NULL);
 467         pxa_set_stuart_info(NULL);
 468
 469         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
 470         pxa_set_udc_info(&udc_info);
 471         pxa_set_fb_info(NULL, &sharp_lm8v31);
 472         pxa_set_mci_info(&lubbock_mci_platform_data);
 473         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 474         pxa_set_ac97_info(NULL);
 475
 476         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 477                 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
 478         /* Compensate for the nROMBT switch which swaps the flash banks */
 479         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
 480                flashboot?"Flash":"ROM", flashboot);
 481
 482         lubbock_flash_data[flashboot^1].name = "application-flash";
 483         lubbock_flash_data[flashboot].name = "boot-rom";
 484         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 485
 486         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 487         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 488 }
 489
 490 static struct map_desc lubbock_io_desc[] __initdata = {
 491         {       /* CPLD */
 492                 .virtual        =  LUBBOCK_FPGA_VIRT,
 493                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 494                 .length         = 0x00100000,
 495                 .type           = MT_DEVICE
 496         }
 497 };
 498
 499 static void __init lubbock_map_io(void)
 500 {
 501         pxa25x_map_io();
 502         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 503
 504         PCFR |= PCFR_OPDE;
 505 }
 506
 507 /*
 508  * Driver for the 8 discrete LEDs available for general use:
 509  * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
 510  * so be sure to not monkey with them here.
 511  */
 512
 513 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 514 struct lubbock_led {
 515         struct led_classdev     cdev;
 516         u8                      mask;
 517 };
 518
 519 /*
 520  * The triggers lines up below will only be used if the
 521  * LED triggers are compiled in.
 522  */
 523 static const struct {
 524         const char *name;
 525         const char *trigger;
 526 } lubbock_leds[] = {
 527         { "lubbock:D28", "default-on", },
 528         { "lubbock:D27", "cpu0", },
 529         { "lubbock:D26", "heartbeat" },
 530         { "lubbock:D25", },
 531         { "lubbock:D24", },
 532         { "lubbock:D23", },
 533         { "lubbock:D22", },
 534         { "lubbock:D21", },
 535 };
 536
 537 static void lubbock_led_set(struct led_classdev *cdev,
 538                               enum led_brightness b)
 539 {
 540         struct lubbock_led *led = container_of(cdev,
 541                                          struct lubbock_led, cdev);
 542         u32 reg = LUB_DISC_BLNK_LED;
 543
 544         if (b != LED_OFF)
 545                 reg |= led->mask;
 546         else
 547                 reg &= ~led->mask;
 548
 549         LUB_DISC_BLNK_LED = reg;
 550 }
 551
 552 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
 553 {
 554         struct lubbock_led *led = container_of(cdev,
 555                                          struct lubbock_led, cdev);
 556         u32 reg = LUB_DISC_BLNK_LED;
 557
 558         return (reg & led->mask) ? LED_FULL : LED_OFF;
 559 }
 560
 561 static int __init lubbock_leds_init(void)
 562 {
 563         int i;
 564
 565         if (!machine_is_lubbock())
 566                 return -ENODEV;
 567
 568         /* All ON */
 569         LUB_DISC_BLNK_LED |= 0xff;
 570         for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
 571                 struct lubbock_led *led;
 572
 573                 led = kzalloc(sizeof(*led), GFP_KERNEL);
 574                 if (!led)
 575                         break;
 576
 577                 led->cdev.name = lubbock_leds[i].name;
 578                 led->cdev.brightness_set = lubbock_led_set;
 579                 led->cdev.brightness_get = lubbock_led_get;
 580                 led->cdev.default_trigger = lubbock_leds[i].trigger;
 581                 led->mask = BIT(i);
 582
 583                 if (led_classdev_register(NULL, &led->cdev) < 0) {
 584                         kfree(led);
 585                         break;
 586                 }
 587         }
 588
 589         return 0;
 590 }
 591
 592 /*
 593  * Since we may have triggers on any subsystem, defer registration
 594  * until after subsystem_init.
 595  */
 596 fs_initcall(lubbock_leds_init);
 597 #endif
 598
 599 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 600         /* Maintainer: MontaVista Software Inc. */
 601         .map_io         = lubbock_map_io,
 602         .nr_irqs        = LUBBOCK_NR_IRQS,
 603         .init_irq       = pxa25x_init_irq,
 604         .handle_irq     = pxa25x_handle_irq,
 605         .init_time      = pxa_timer_init,
 606         .init_machine   = lubbock_init,
 607         .restart        = pxa_restart,
 608 MACHINE_END