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/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/major.h>
  20 #include <linux/fb.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/smc91x.h>
  25
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/ads7846.h>
  28 #include <linux/spi/pxa2xx_spi.h>
  29
  30 #include <asm/setup.h>
  31 #include <asm/memory.h>
  32 #include <asm/mach-types.h>
  33 #include <mach/hardware.h>
  34 #include <asm/irq.h>
  35 #include <asm/sizes.h>
  36
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/irq.h>
  40 #include <asm/mach/flash.h>
  41
  42 #include <asm/hardware/sa1111.h>
  43
  44 #include <mach/pxa25x.h>
  45 #include <mach/gpio.h>
  46 #include <mach/audio.h>
  47 #include <mach/lubbock.h>
  48 #include <mach/udc.h>
  49 #include <mach/irda.h>
  50 #include <mach/pxafb.h>
  51 #include <mach/mmc.h>
  52 #include <mach/pm.h>
  53 #include <mach/smemc.h>
  54
  55 #include "generic.h"
  56 #include "clock.h"
  57 #include "devices.h"
  58
  59 static unsigned long lubbock_pin_config[] __initdata = {
  60         GPIO15_nCS_1,   /* CS1 - Flash */
  61         GPIO78_nCS_2,   /* CS2 - Baseboard FGPA */
  62         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
  63         GPIO80_nCS_4,   /* CS4 - SA1111 */
  64
  65         /* SSP data pins */
  66         GPIO23_SSP1_SCLK,
  67         GPIO25_SSP1_TXD,
  68         GPIO26_SSP1_RXD,
  69
  70         /* AC97 */
  71         GPIO28_AC97_BITCLK,
  72         GPIO29_AC97_SDATA_IN_0,
  73         GPIO30_AC97_SDATA_OUT,
  74         GPIO31_AC97_SYNC,
  75
  76         /* LCD - 16bpp DSTN */
  77         GPIOxx_LCD_DSTN_16BPP,
  78
  79         /* BTUART */
  80         GPIO42_BTUART_RXD,
  81         GPIO43_BTUART_TXD,
  82         GPIO44_BTUART_CTS,
  83         GPIO45_BTUART_RTS,
  84
  85         /* PC Card */
  86         GPIO48_nPOE,
  87         GPIO49_nPWE,
  88         GPIO50_nPIOR,
  89         GPIO51_nPIOW,
  90         GPIO52_nPCE_1,
  91         GPIO53_nPCE_2,
  92         GPIO54_nPSKTSEL,
  93         GPIO55_nPREG,
  94         GPIO56_nPWAIT,
  95         GPIO57_nIOIS16,
  96
  97         /* MMC */
  98         GPIO6_MMC_CLK,
  99         GPIO8_MMC_CS0,
 100
 101         /* wakeup */
 102         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
 103 };
 104
 105 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
 106 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
 107
 108 void lubbock_set_hexled(uint32_t value)
 109 {
 110         LUB_HEXLED = value;
 111 }
 112
 113 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
 114 {
 115         unsigned long flags;
 116
 117         local_irq_save(flags);
 118         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
 119         local_irq_restore(flags);
 120 }
 121 EXPORT_SYMBOL(lubbock_set_misc_wr);
 122
 123 static unsigned long lubbock_irq_enabled;
 124
 125 static void lubbock_mask_irq(unsigned int irq)
 126 {
 127         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
 128         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
 129 }
 130
 131 static void lubbock_unmask_irq(unsigned int irq)
 132 {
 133         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
 134         /* the irq can be acknowledged only if deasserted, so it's done here */
 135         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
 136         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
 137 }
 138
 139 static struct irq_chip lubbock_irq_chip = {
 140         .name           = "FPGA",
 141         .ack            = lubbock_mask_irq,
 142         .mask           = lubbock_mask_irq,
 143         .unmask         = lubbock_unmask_irq,
 144 };
 145
 146 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
 147 {
 148         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
 149         do {
 150                 desc->chip->ack(irq);   /* clear our parent irq */
 151                 if (likely(pending)) {
 152                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
 153                         generic_handle_irq(irq);
 154                 }
 155                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
 156         } while (pending);
 157 }
 158
 159 static void __init lubbock_init_irq(void)
 160 {
 161         int irq;
 162
 163         pxa25x_init_irq();
 164
 165         /* setup extra lubbock irqs */
 166         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 167                 set_irq_chip(irq, &lubbock_irq_chip);
 168                 set_irq_handler(irq, handle_level_irq);
 169                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 170         }
 171
 172         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 173         set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
 174 }
 175
 176 #ifdef CONFIG_PM
 177
 178 static int lubbock_irq_resume(struct sys_device *dev)
 179 {
 180         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
 181         return 0;
 182 }
 183
 184 static struct sysdev_class lubbock_irq_sysclass = {
 185         .name = "cpld_irq",
 186         .resume = lubbock_irq_resume,
 187 };
 188
 189 static struct sys_device lubbock_irq_device = {
 190         .cls = &lubbock_irq_sysclass,
 191 };
 192
 193 static int __init lubbock_irq_device_init(void)
 194 {
 195         int ret = -ENODEV;
 196
 197         if (machine_is_lubbock()) {
 198                 ret = sysdev_class_register(&lubbock_irq_sysclass);
 199                 if (ret == 0)
 200                         ret = sysdev_register(&lubbock_irq_device);
 201         }
 202         return ret;
 203 }
 204
 205 device_initcall(lubbock_irq_device_init);
 206
 207 #endif
 208
 209 static int lubbock_udc_is_connected(void)
 210 {
 211         return (LUB_MISC_RD & (1 << 9)) == 0;
 212 }
 213
 214 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 215         .udc_is_connected       = lubbock_udc_is_connected,
 216         // no D+ pullup; lubbock can't connect/disconnect in software
 217 };
 218
 219 static struct resource sa1111_resources[] = {
 220         [0] = {
 221                 .start  = 0x10000000,
 222                 .end    = 0x10001fff,
 223                 .flags  = IORESOURCE_MEM,
 224         },
 225         [1] = {
 226                 .start  = LUBBOCK_SA1111_IRQ,
 227                 .end    = LUBBOCK_SA1111_IRQ,
 228                 .flags  = IORESOURCE_IRQ,
 229         },
 230 };
 231
 232 static struct sa1111_platform_data sa1111_info = {
 233         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
 234 };
 235
 236 static struct platform_device sa1111_device = {
 237         .name           = "sa1111",
 238         .id             = -1,
 239         .num_resources  = ARRAY_SIZE(sa1111_resources),
 240         .resource       = sa1111_resources,
 241         .dev            = {
 242                 .platform_data  = &sa1111_info,
 243         },
 244 };
 245
 246 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
 247  * you can select it to replace the ucb1400 by switching the touchscreen cable
 248  * (to J5) and poking board registers (as done below).  Else it's only useful
 249  * for the temperature sensors.
 250  */
 251 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 252         .num_chipselect = 1,
 253 };
 254
 255 static int lubbock_ads7846_pendown_state(void)
 256 {
 257         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
 258         return 0;
 259 }
 260
 261 static struct ads7846_platform_data ads_info = {
 262         .model                  = 7846,
 263         .vref_delay_usecs       = 100,          /* internal, no cap */
 264         .get_pendown_state      = lubbock_ads7846_pendown_state,
 265         // .x_plate_ohms                = 500,  /* GUESS! */
 266         // .y_plate_ohms                = 500,  /* GUESS! */
 267 };
 268
 269 static void ads7846_cs(u32 command)
 270 {
 271         static const unsigned   TS_nCS = 1 << 11;
 272         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
 273 }
 274
 275 static struct pxa2xx_spi_chip ads_hw = {
 276         .tx_threshold           = 1,
 277         .rx_threshold           = 2,
 278         .cs_control             = ads7846_cs,
 279 };
 280
 281 static struct spi_board_info spi_board_info[] __initdata = { {
 282         .modalias       = "ads7846",
 283         .platform_data  = &ads_info,
 284         .controller_data = &ads_hw,
 285         .irq            = LUBBOCK_BB_IRQ,
 286         .max_speed_hz   = 120000 /* max sample rate at 3V */
 287                                 * 26 /* command + data + overhead */,
 288         .bus_num        = 1,
 289         .chip_select    = 0,
 290 },
 291 };
 292
 293 static struct resource smc91x_resources[] = {
 294         [0] = {
 295                 .name   = "smc91x-regs",
 296                 .start  = 0x0c000c00,
 297                 .end    = 0x0c0fffff,
 298                 .flags  = IORESOURCE_MEM,
 299         },
 300         [1] = {
 301                 .start  = LUBBOCK_ETH_IRQ,
 302                 .end    = LUBBOCK_ETH_IRQ,
 303                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 304         },
 305         [2] = {
 306                 .name   = "smc91x-attrib",
 307                 .start  = 0x0e000000,
 308                 .end    = 0x0e0fffff,
 309                 .flags  = IORESOURCE_MEM,
 310         },
 311 };
 312
 313 static struct smc91x_platdata lubbock_smc91x_info = {
 314         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
 315 };
 316
 317 static struct platform_device smc91x_device = {
 318         .name           = "smc91x",
 319         .id             = -1,
 320         .num_resources  = ARRAY_SIZE(smc91x_resources),
 321         .resource       = smc91x_resources,
 322         .dev            = {
 323                 .platform_data = &lubbock_smc91x_info,
 324         },
 325 };
 326
 327 static struct resource flash_resources[] = {
 328         [0] = {
 329                 .start  = 0x00000000,
 330                 .end    = SZ_64M - 1,
 331                 .flags  = IORESOURCE_MEM,
 332         },
 333         [1] = {
 334                 .start  = 0x04000000,
 335                 .end    = 0x04000000 + SZ_64M - 1,
 336                 .flags  = IORESOURCE_MEM,
 337         },
 338 };
 339
 340 static struct mtd_partition lubbock_partitions[] = {
 341         {
 342                 .name =         "Bootloader",
 343                 .size =         0x00040000,
 344                 .offset =       0,
 345                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 346         },{
 347                 .name =         "Kernel",
 348                 .size =         0x00100000,
 349                 .offset =       0x00040000,
 350         },{
 351                 .name =         "Filesystem",
 352                 .size =         MTDPART_SIZ_FULL,
 353                 .offset =       0x00140000
 354         }
 355 };
 356
 357 static struct flash_platform_data lubbock_flash_data[2] = {
 358         {
 359                 .map_name       = "cfi_probe",
 360                 .parts          = lubbock_partitions,
 361                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
 362         }, {
 363                 .map_name       = "cfi_probe",
 364                 .parts          = NULL,
 365                 .nr_parts       = 0,
 366         }
 367 };
 368
 369 static struct platform_device lubbock_flash_device[2] = {
 370         {
 371                 .name           = "pxa2xx-flash",
 372                 .id             = 0,
 373                 .dev = {
 374                         .platform_data = &lubbock_flash_data[0],
 375                 },
 376                 .resource = &flash_resources[0],
 377                 .num_resources = 1,
 378         },
 379         {
 380                 .name           = "pxa2xx-flash",
 381                 .id             = 1,
 382                 .dev = {
 383                         .platform_data = &lubbock_flash_data[1],
 384                 },
 385                 .resource = &flash_resources[1],
 386                 .num_resources = 1,
 387         },
 388 };
 389
 390 static struct platform_device *devices[] __initdata = {
 391         &sa1111_device,
 392         &smc91x_device,
 393         &lubbock_flash_device[0],
 394         &lubbock_flash_device[1],
 395 };
 396
 397 static struct pxafb_mode_info sharp_lm8v31_mode = {
 398         .pixclock       = 270000,
 399         .xres           = 640,
 400         .yres           = 480,
 401         .bpp            = 16,
 402         .hsync_len      = 1,
 403         .left_margin    = 3,
 404         .right_margin   = 3,
 405         .vsync_len      = 1,
 406         .upper_margin   = 0,
 407         .lower_margin   = 0,
 408         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 409         .cmap_greyscale = 0,
 410 };
 411
 412 static struct pxafb_mach_info sharp_lm8v31 = {
 413         .modes          = &sharp_lm8v31_mode,
 414         .num_modes      = 1,
 415         .cmap_inverse   = 0,
 416         .cmap_static    = 0,
 417         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 418                           LCD_AC_BIAS_FREQ(255),
 419 };
 420
 421 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 422
 423 static void lubbock_mmc_poll(unsigned long);
 424 static irq_handler_t mmc_detect_int;
 425
 426 static struct timer_list mmc_timer = {
 427         .function       = lubbock_mmc_poll,
 428 };
 429
 430 static void lubbock_mmc_poll(unsigned long data)
 431 {
 432         unsigned long flags;
 433
 434         /* clear any previous irq state, then ... */
 435         local_irq_save(flags);
 436         LUB_IRQ_SET_CLR &= ~(1 << 0);
 437         local_irq_restore(flags);
 438
 439         /* poll until mmc/sd card is removed */
 440         if (LUB_IRQ_SET_CLR & (1 << 0))
 441                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 442         else {
 443                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
 444                 enable_irq(LUBBOCK_SD_IRQ);
 445         }
 446 }
 447
 448 static irqreturn_t lubbock_detect_int(int irq, void *data)
 449 {
 450         /* IRQ is level triggered; disable, and poll for removal */
 451         disable_irq(irq);
 452         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 453
 454         return mmc_detect_int(irq, data);
 455 }
 456
 457 static int lubbock_mci_init(struct device *dev,
 458                 irq_handler_t detect_int,
 459                 void *data)
 460 {
 461         /* detect card insert/eject */
 462         mmc_detect_int = detect_int;
 463         init_timer(&mmc_timer);
 464         mmc_timer.data = (unsigned long) data;
 465         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 466                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
 467 }
 468
 469 static int lubbock_mci_get_ro(struct device *dev)
 470 {
 471         return (LUB_MISC_RD & (1 << 2)) != 0;
 472 }
 473
 474 static void lubbock_mci_exit(struct device *dev, void *data)
 475 {
 476         free_irq(LUBBOCK_SD_IRQ, data);
 477         del_timer_sync(&mmc_timer);
 478 }
 479
 480 static struct pxamci_platform_data lubbock_mci_platform_data = {
 481         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 482         .detect_delay_ms        = 10,
 483         .init                   = lubbock_mci_init,
 484         .get_ro                 = lubbock_mci_get_ro,
 485         .exit                   = lubbock_mci_exit,
 486         .gpio_card_detect       = -1,
 487         .gpio_card_ro           = -1,
 488         .gpio_power             = -1,
 489 };
 490
 491 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 492 {
 493         unsigned long flags;
 494
 495         local_irq_save(flags);
 496         if (mode & IR_SIRMODE) {
 497                 LUB_MISC_WR &= ~(1 << 4);
 498         } else if (mode & IR_FIRMODE) {
 499                 LUB_MISC_WR |= 1 << 4;
 500         }
 501         pxa2xx_transceiver_mode(dev, mode);
 502         local_irq_restore(flags);
 503 }
 504
 505 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 506         .gpio_pwdown            = -1,
 507         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
 508         .transceiver_mode       = lubbock_irda_transceiver_mode,
 509 };
 510
 511 static void __init lubbock_init(void)
 512 {
 513         int flashboot = (LUB_CONF_SWITCHES & 1);
 514
 515         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
 516
 517         pxa_set_ffuart_info(NULL);
 518         pxa_set_btuart_info(NULL);
 519         pxa_set_stuart_info(NULL);
 520
 521         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
 522         pxa_set_udc_info(&udc_info);
 523         set_pxa_fb_info(&sharp_lm8v31);
 524         pxa_set_mci_info(&lubbock_mci_platform_data);
 525         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 526         pxa_set_ac97_info(NULL);
 527
 528         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 529                 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
 530         /* Compensate for the nROMBT switch which swaps the flash banks */
 531         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
 532                flashboot?"Flash":"ROM", flashboot);
 533
 534         lubbock_flash_data[flashboot^1].name = "application-flash";
 535         lubbock_flash_data[flashboot].name = "boot-rom";
 536         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 537
 538         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 539         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 540 }
 541
 542 static struct map_desc lubbock_io_desc[] __initdata = {
 543         {       /* CPLD */
 544                 .virtual        =  LUBBOCK_FPGA_VIRT,
 545                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 546                 .length         = 0x00100000,
 547                 .type           = MT_DEVICE
 548         }
 549 };
 550
 551 static void __init lubbock_map_io(void)
 552 {
 553         pxa25x_map_io();
 554         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 555
 556         PCFR |= PCFR_OPDE;
 557 }
 558
 559 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 560         /* Maintainer: MontaVista Software Inc. */
 561         .map_io         = lubbock_map_io,
 562         .nr_irqs        = LUBBOCK_NR_IRQS,
 563         .init_irq       = lubbock_init_irq,
 564         .timer          = &pxa_timer,
 565         .init_machine   = lubbock_init,
 566 MACHINE_END