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