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