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