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/gpio-reg.h>
  17 #include <linux/gpio/machine.h>
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/io.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/syscore_ops.h>
  24 #include <linux/major.h>
  25 #include <linux/fb.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/smc91x.h>
  30 #include <linux/slab.h>
  31 #include <linux/leds.h>
  32
  33 #include <linux/spi/spi.h>
  34 #include <linux/spi/ads7846.h>
  35 #include <linux/spi/pxa2xx_spi.h>
  36
  37 #include <asm/setup.h>
  38 #include <asm/memory.h>
  39 #include <asm/mach-types.h>
  40 #include <mach/hardware.h>
  41 #include <asm/irq.h>
  42 #include <asm/sizes.h>
  43
  44 #include <asm/mach/arch.h>
  45 #include <asm/mach/map.h>
  46 #include <asm/mach/irq.h>
  47 #include <asm/mach/flash.h>
  48
  49 #include <asm/hardware/sa1111.h>
  50
  51 #include "pxa25x.h"
  52 #include <mach/audio.h>
  53 #include <mach/lubbock.h>
  54 #include "udc.h"
  55 #include <linux/platform_data/irda-pxaficp.h>
  56 #include <linux/platform_data/video-pxafb.h>
  57 #include <linux/platform_data/mmc-pxamci.h>
  58 #include "pm.h"
  59 #include <mach/smemc.h>
  60
  61 #include "generic.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         /* SA1111 chip */
 107         GPIO11_3_6MHz,
 108
 109         /* wakeup */
 110         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
 111 };
 112
 113 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
 114
 115 void lubbock_set_hexled(uint32_t value)
 116 {
 117         LUB_HEXLED = value;
 118 }
 119
 120 static struct gpio_chip *lubbock_misc_wr_gc;
 121
 122 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
 123 {
 124         unsigned long m = mask, v = set;
 125         lubbock_misc_wr_gc->set_multiple(lubbock_misc_wr_gc, &m, &v);
 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 void lubbock_init_pcmcia(void)
 140 {
 141         struct clk *clk;
 142
 143         /* Add an alias for the SA1111 PCMCIA clock */
 144         clk = clk_get_sys("pxa2xx-pcmcia", NULL);
 145         if (!IS_ERR(clk)) {
 146                 clkdev_create(clk, NULL, "1800");
 147                 clk_put(clk);
 148         }
 149 }
 150
 151 static struct resource sa1111_resources[] = {
 152         [0] = {
 153                 .start  = 0x10000000,
 154                 .end    = 0x10001fff,
 155                 .flags  = IORESOURCE_MEM,
 156         },
 157         [1] = {
 158                 .start  = LUBBOCK_SA1111_IRQ,
 159                 .end    = LUBBOCK_SA1111_IRQ,
 160                 .flags  = IORESOURCE_IRQ,
 161         },
 162 };
 163
 164 static struct sa1111_platform_data sa1111_info = {
 165         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
 166         .disable_devs   = SA1111_DEVID_SAC,
 167 };
 168
 169 static struct platform_device sa1111_device = {
 170         .name           = "sa1111",
 171         .id             = -1,
 172         .num_resources  = ARRAY_SIZE(sa1111_resources),
 173         .resource       = sa1111_resources,
 174         .dev            = {
 175                 .platform_data  = &sa1111_info,
 176         },
 177 };
 178
 179 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
 180  * you can select it to replace the ucb1400 by switching the touchscreen cable
 181  * (to J5) and poking board registers (as done below).  Else it's only useful
 182  * for the temperature sensors.
 183  */
 184 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 185         .num_chipselect = 1,
 186 };
 187
 188 static int lubbock_ads7846_pendown_state(void)
 189 {
 190         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
 191         return 0;
 192 }
 193
 194 static struct ads7846_platform_data ads_info = {
 195         .model                  = 7846,
 196         .vref_delay_usecs       = 100,          /* internal, no cap */
 197         .get_pendown_state      = lubbock_ads7846_pendown_state,
 198         // .x_plate_ohms                = 500,  /* GUESS! */
 199         // .y_plate_ohms                = 500,  /* GUESS! */
 200 };
 201
 202 static void ads7846_cs(u32 command)
 203 {
 204         static const unsigned   TS_nCS = 1 << 11;
 205         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
 206 }
 207
 208 static struct pxa2xx_spi_chip ads_hw = {
 209         .tx_threshold           = 1,
 210         .rx_threshold           = 2,
 211         .cs_control             = ads7846_cs,
 212 };
 213
 214 static struct spi_board_info spi_board_info[] __initdata = { {
 215         .modalias       = "ads7846",
 216         .platform_data  = &ads_info,
 217         .controller_data = &ads_hw,
 218         .irq            = LUBBOCK_BB_IRQ,
 219         .max_speed_hz   = 120000 /* max sample rate at 3V */
 220                                 * 26 /* command + data + overhead */,
 221         .bus_num        = 1,
 222         .chip_select    = 0,
 223 },
 224 };
 225
 226 static struct resource smc91x_resources[] = {
 227         [0] = {
 228                 .name   = "smc91x-regs",
 229                 .start  = 0x0c000c00,
 230                 .end    = 0x0c0fffff,
 231                 .flags  = IORESOURCE_MEM,
 232         },
 233         [1] = {
 234                 .start  = LUBBOCK_ETH_IRQ,
 235                 .end    = LUBBOCK_ETH_IRQ,
 236                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 237         },
 238         [2] = {
 239                 .name   = "smc91x-attrib",
 240                 .start  = 0x0e000000,
 241                 .end    = 0x0e0fffff,
 242                 .flags  = IORESOURCE_MEM,
 243         },
 244 };
 245
 246 static struct smc91x_platdata lubbock_smc91x_info = {
 247         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
 248 };
 249
 250 static struct platform_device smc91x_device = {
 251         .name           = "smc91x",
 252         .id             = -1,
 253         .num_resources  = ARRAY_SIZE(smc91x_resources),
 254         .resource       = smc91x_resources,
 255         .dev            = {
 256                 .platform_data = &lubbock_smc91x_info,
 257         },
 258 };
 259
 260 static struct resource flash_resources[] = {
 261         [0] = {
 262                 .start  = 0x00000000,
 263                 .end    = SZ_64M - 1,
 264                 .flags  = IORESOURCE_MEM,
 265         },
 266         [1] = {
 267                 .start  = 0x04000000,
 268                 .end    = 0x04000000 + SZ_64M - 1,
 269                 .flags  = IORESOURCE_MEM,
 270         },
 271 };
 272
 273 static struct mtd_partition lubbock_partitions[] = {
 274         {
 275                 .name =         "Bootloader",
 276                 .size =         0x00040000,
 277                 .offset =       0,
 278                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 279         },{
 280                 .name =         "Kernel",
 281                 .size =         0x00100000,
 282                 .offset =       0x00040000,
 283         },{
 284                 .name =         "Filesystem",
 285                 .size =         MTDPART_SIZ_FULL,
 286                 .offset =       0x00140000
 287         }
 288 };
 289
 290 static struct flash_platform_data lubbock_flash_data[2] = {
 291         {
 292                 .map_name       = "cfi_probe",
 293                 .parts          = lubbock_partitions,
 294                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
 295         }, {
 296                 .map_name       = "cfi_probe",
 297                 .parts          = NULL,
 298                 .nr_parts       = 0,
 299         }
 300 };
 301
 302 static struct platform_device lubbock_flash_device[2] = {
 303         {
 304                 .name           = "pxa2xx-flash",
 305                 .id             = 0,
 306                 .dev = {
 307                         .platform_data = &lubbock_flash_data[0],
 308                 },
 309                 .resource = &flash_resources[0],
 310                 .num_resources = 1,
 311         },
 312         {
 313                 .name           = "pxa2xx-flash",
 314                 .id             = 1,
 315                 .dev = {
 316                         .platform_data = &lubbock_flash_data[1],
 317                 },
 318                 .resource = &flash_resources[1],
 319                 .num_resources = 1,
 320         },
 321 };
 322
 323 static struct resource lubbock_cplds_resources[] = {
 324         [0] = {
 325                 .start  = LUBBOCK_FPGA_PHYS + 0xc0,
 326                 .end    = LUBBOCK_FPGA_PHYS + 0xe0 - 1,
 327                 .flags  = IORESOURCE_MEM,
 328         },
 329         [1] = {
 330                 .start  = PXA_GPIO_TO_IRQ(0),
 331                 .end    = PXA_GPIO_TO_IRQ(0),
 332                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 333         },
 334         [2] = {
 335                 .start  = LUBBOCK_IRQ(0),
 336                 .end    = LUBBOCK_IRQ(6),
 337                 .flags  = IORESOURCE_IRQ,
 338         },
 339 };
 340
 341 static struct platform_device lubbock_cplds_device = {
 342         .name           = "pxa_cplds_irqs",
 343         .id             = -1,
 344         .resource       = &lubbock_cplds_resources[0],
 345         .num_resources  = 3,
 346 };
 347
 348
 349 static struct platform_device *devices[] __initdata = {
 350         &sa1111_device,
 351         &smc91x_device,
 352         &lubbock_flash_device[0],
 353         &lubbock_flash_device[1],
 354         &lubbock_cplds_device,
 355 };
 356
 357 static struct pxafb_mode_info sharp_lm8v31_mode = {
 358         .pixclock       = 270000,
 359         .xres           = 640,
 360         .yres           = 480,
 361         .bpp            = 16,
 362         .hsync_len      = 1,
 363         .left_margin    = 3,
 364         .right_margin   = 3,
 365         .vsync_len      = 1,
 366         .upper_margin   = 0,
 367         .lower_margin   = 0,
 368         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 369         .cmap_greyscale = 0,
 370 };
 371
 372 static struct pxafb_mach_info sharp_lm8v31 = {
 373         .modes          = &sharp_lm8v31_mode,
 374         .num_modes      = 1,
 375         .cmap_inverse   = 0,
 376         .cmap_static    = 0,
 377         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 378                           LCD_AC_BIAS_FREQ(255),
 379 };
 380
 381 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 382
 383 static irq_handler_t mmc_detect_int;
 384 static void *mmc_detect_int_data;
 385 static struct timer_list mmc_timer;
 386
 387 static void lubbock_mmc_poll(struct timer_list *unused)
 388 {
 389         unsigned long flags;
 390
 391         /* clear any previous irq state, then ... */
 392         local_irq_save(flags);
 393         LUB_IRQ_SET_CLR &= ~(1 << 0);
 394         local_irq_restore(flags);
 395
 396         /* poll until mmc/sd card is removed */
 397         if (LUB_IRQ_SET_CLR & (1 << 0))
 398                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 399         else {
 400                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, mmc_detect_int_data);
 401                 enable_irq(LUBBOCK_SD_IRQ);
 402         }
 403 }
 404
 405 static irqreturn_t lubbock_detect_int(int irq, void *data)
 406 {
 407         /* IRQ is level triggered; disable, and poll for removal */
 408         disable_irq(irq);
 409         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 410
 411         return mmc_detect_int(irq, data);
 412 }
 413
 414 static int lubbock_mci_init(struct device *dev,
 415                 irq_handler_t detect_int,
 416                 void *data)
 417 {
 418         /* detect card insert/eject */
 419         mmc_detect_int = detect_int;
 420         mmc_detect_int_data = data;
 421         timer_setup(&mmc_timer, lubbock_mmc_poll, 0);
 422         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 423                            0, "lubbock-sd-detect", data);
 424 }
 425
 426 static int lubbock_mci_get_ro(struct device *dev)
 427 {
 428         return (LUB_MISC_RD & (1 << 2)) != 0;
 429 }
 430
 431 static void lubbock_mci_exit(struct device *dev, void *data)
 432 {
 433         free_irq(LUBBOCK_SD_IRQ, data);
 434         del_timer_sync(&mmc_timer);
 435 }
 436
 437 static struct pxamci_platform_data lubbock_mci_platform_data = {
 438         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 439         .detect_delay_ms        = 10,
 440         .init                   = lubbock_mci_init,
 441         .get_ro                 = lubbock_mci_get_ro,
 442         .exit                   = lubbock_mci_exit,
 443         .gpio_card_detect       = -1,
 444         .gpio_card_ro           = -1,
 445         .gpio_power             = -1,
 446 };
 447
 448 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 449 {
 450         unsigned long flags;
 451
 452         local_irq_save(flags);
 453         if (mode & IR_SIRMODE) {
 454                 lubbock_set_misc_wr(BIT(4), 0);
 455         } else if (mode & IR_FIRMODE) {
 456                 lubbock_set_misc_wr(BIT(4), BIT(4));
 457         }
 458         pxa2xx_transceiver_mode(dev, mode);
 459         local_irq_restore(flags);
 460 }
 461
 462 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 463         .gpio_pwdown            = -1,
 464         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
 465         .transceiver_mode       = lubbock_irda_transceiver_mode,
 466 };
 467
 468 static void __init lubbock_init(void)
 469 {
 470         int flashboot = (LUB_CONF_SWITCHES & 1);
 471
 472         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
 473
 474         lubbock_misc_wr_gc = gpio_reg_init(NULL, (void *)&LUB_MISC_WR,
 475                                            -1, 16, "lubbock", 0, LUB_MISC_WR,
 476                                            NULL, NULL, NULL);
 477         if (IS_ERR(lubbock_misc_wr_gc)) {
 478                 pr_err("Lubbock: unable to register lubbock GPIOs: %ld\n",
 479                        PTR_ERR(lubbock_misc_wr_gc));
 480                 lubbock_misc_wr_gc = NULL;
 481         }
 482
 483         pxa_set_ffuart_info(NULL);
 484         pxa_set_btuart_info(NULL);
 485         pxa_set_stuart_info(NULL);
 486
 487         lubbock_init_pcmcia();
 488
 489         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
 490         pxa_set_udc_info(&udc_info);
 491         pxa_set_fb_info(NULL, &sharp_lm8v31);
 492         pxa_set_mci_info(&lubbock_mci_platform_data);
 493         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 494         pxa_set_ac97_info(NULL);
 495
 496         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 497                 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
 498         /* Compensate for the nROMBT switch which swaps the flash banks */
 499         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
 500                flashboot?"Flash":"ROM", flashboot);
 501
 502         lubbock_flash_data[flashboot^1].name = "application-flash";
 503         lubbock_flash_data[flashboot].name = "boot-rom";
 504         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 505
 506         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 507         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 508 }
 509
 510 static struct map_desc lubbock_io_desc[] __initdata = {
 511         {       /* CPLD */
 512                 .virtual        =  LUBBOCK_FPGA_VIRT,
 513                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 514                 .length         = 0x00100000,
 515                 .type           = MT_DEVICE
 516         }
 517 };
 518
 519 static void __init lubbock_map_io(void)
 520 {
 521         pxa25x_map_io();
 522         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 523
 524         PCFR |= PCFR_OPDE;
 525 }
 526
 527 /*
 528  * Driver for the 8 discrete LEDs available for general use:
 529  * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
 530  * so be sure to not monkey with them here.
 531  */
 532
 533 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 534 struct lubbock_led {
 535         struct led_classdev     cdev;
 536         u8                      mask;
 537 };
 538
 539 /*
 540  * The triggers lines up below will only be used if the
 541  * LED triggers are compiled in.
 542  */
 543 static const struct {
 544         const char *name;
 545         const char *trigger;
 546 } lubbock_leds[] = {
 547         { "lubbock:D28", "default-on", },
 548         { "lubbock:D27", "cpu0", },
 549         { "lubbock:D26", "heartbeat" },
 550         { "lubbock:D25", },
 551         { "lubbock:D24", },
 552         { "lubbock:D23", },
 553         { "lubbock:D22", },
 554         { "lubbock:D21", },
 555 };
 556
 557 static void lubbock_led_set(struct led_classdev *cdev,
 558                               enum led_brightness b)
 559 {
 560         struct lubbock_led *led = container_of(cdev,
 561                                          struct lubbock_led, cdev);
 562         u32 reg = LUB_DISC_BLNK_LED;
 563
 564         if (b != LED_OFF)
 565                 reg |= led->mask;
 566         else
 567                 reg &= ~led->mask;
 568
 569         LUB_DISC_BLNK_LED = reg;
 570 }
 571
 572 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
 573 {
 574         struct lubbock_led *led = container_of(cdev,
 575                                          struct lubbock_led, cdev);
 576         u32 reg = LUB_DISC_BLNK_LED;
 577
 578         return (reg & led->mask) ? LED_FULL : LED_OFF;
 579 }
 580
 581 static int __init lubbock_leds_init(void)
 582 {
 583         int i;
 584
 585         if (!machine_is_lubbock())
 586                 return -ENODEV;
 587
 588         /* All ON */
 589         LUB_DISC_BLNK_LED |= 0xff;
 590         for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
 591                 struct lubbock_led *led;
 592
 593                 led = kzalloc(sizeof(*led), GFP_KERNEL);
 594                 if (!led)
 595                         break;
 596
 597                 led->cdev.name = lubbock_leds[i].name;
 598                 led->cdev.brightness_set = lubbock_led_set;
 599                 led->cdev.brightness_get = lubbock_led_get;
 600                 led->cdev.default_trigger = lubbock_leds[i].trigger;
 601                 led->mask = BIT(i);
 602
 603                 if (led_classdev_register(NULL, &led->cdev) < 0) {
 604                         kfree(led);
 605                         break;
 606                 }
 607         }
 608
 609         return 0;
 610 }
 611
 612 /*
 613  * Since we may have triggers on any subsystem, defer registration
 614  * until after subsystem_init.
 615  */
 616 fs_initcall(lubbock_leds_init);
 617 #endif
 618
 619 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 620         /* Maintainer: MontaVista Software Inc. */
 621         .map_io         = lubbock_map_io,
 622         .nr_irqs        = LUBBOCK_NR_IRQS,
 623         .init_irq       = pxa25x_init_irq,
 624         .handle_irq     = pxa25x_handle_irq,
 625         .init_time      = pxa_timer_init,
 626         .init_machine   = lubbock_init,
 627         .restart        = pxa_restart,
 628 MACHINE_END