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