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/syscore_ops.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(struct irq_data *d)
 126 {
 127         int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
 128         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
 129 }
 130
 131 static void lubbock_unmask_irq(struct irq_data *d)
 132 {
 133         int lubbock_irq = (d->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         .irq_ack        = lubbock_mask_irq,
 142         .irq_mask       = lubbock_mask_irq,
 143         .irq_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                 /* clear our parent irq */
 151                 desc->irq_data.chip->irq_ack(&desc->irq_data);
 152                 if (likely(pending)) {
 153                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
 154                         generic_handle_irq(irq);
 155                 }
 156                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
 157         } while (pending);
 158 }
 159
 160 static void __init lubbock_init_irq(void)
 161 {
 162         int irq;
 163
 164         pxa25x_init_irq();
 165
 166         /* setup extra lubbock irqs */
 167         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 168                 irq_set_chip_and_handler(irq, &lubbock_irq_chip,
 169                                          handle_level_irq);
 170                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 171         }
 172
 173         irq_set_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 174         irq_set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
 175 }
 176
 177 #ifdef CONFIG_PM
 178
 179 static void lubbock_irq_resume(void)
 180 {
 181         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
 182 }
 183
 184 static struct syscore_ops lubbock_irq_syscore_ops = {
 185         .resume = lubbock_irq_resume,
 186 };
 187
 188 static int __init lubbock_irq_device_init(void)
 189 {
 190         if (machine_is_lubbock()) {
 191                 register_syscore_ops(&lubbock_irq_syscore_ops);
 192                 return 0;
 193         }
 194         return -ENODEV;
 195 }
 196
 197 device_initcall(lubbock_irq_device_init);
 198
 199 #endif
 200
 201 static int lubbock_udc_is_connected(void)
 202 {
 203         return (LUB_MISC_RD & (1 << 9)) == 0;
 204 }
 205
 206 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 207         .udc_is_connected       = lubbock_udc_is_connected,
 208         // no D+ pullup; lubbock can't connect/disconnect in software
 209 };
 210
 211 static struct resource sa1111_resources[] = {
 212         [0] = {
 213                 .start  = 0x10000000,
 214                 .end    = 0x10001fff,
 215                 .flags  = IORESOURCE_MEM,
 216         },
 217         [1] = {
 218                 .start  = LUBBOCK_SA1111_IRQ,
 219                 .end    = LUBBOCK_SA1111_IRQ,
 220                 .flags  = IORESOURCE_IRQ,
 221         },
 222 };
 223
 224 static struct sa1111_platform_data sa1111_info = {
 225         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
 226 };
 227
 228 static struct platform_device sa1111_device = {
 229         .name           = "sa1111",
 230         .id             = -1,
 231         .num_resources  = ARRAY_SIZE(sa1111_resources),
 232         .resource       = sa1111_resources,
 233         .dev            = {
 234                 .platform_data  = &sa1111_info,
 235         },
 236 };
 237
 238 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
 239  * you can select it to replace the ucb1400 by switching the touchscreen cable
 240  * (to J5) and poking board registers (as done below).  Else it's only useful
 241  * for the temperature sensors.
 242  */
 243 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 244         .num_chipselect = 1,
 245 };
 246
 247 static int lubbock_ads7846_pendown_state(void)
 248 {
 249         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
 250         return 0;
 251 }
 252
 253 static struct ads7846_platform_data ads_info = {
 254         .model                  = 7846,
 255         .vref_delay_usecs       = 100,          /* internal, no cap */
 256         .get_pendown_state      = lubbock_ads7846_pendown_state,
 257         // .x_plate_ohms                = 500,  /* GUESS! */
 258         // .y_plate_ohms                = 500,  /* GUESS! */
 259 };
 260
 261 static void ads7846_cs(u32 command)
 262 {
 263         static const unsigned   TS_nCS = 1 << 11;
 264         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
 265 }
 266
 267 static struct pxa2xx_spi_chip ads_hw = {
 268         .tx_threshold           = 1,
 269         .rx_threshold           = 2,
 270         .cs_control             = ads7846_cs,
 271 };
 272
 273 static struct spi_board_info spi_board_info[] __initdata = { {
 274         .modalias       = "ads7846",
 275         .platform_data  = &ads_info,
 276         .controller_data = &ads_hw,
 277         .irq            = LUBBOCK_BB_IRQ,
 278         .max_speed_hz   = 120000 /* max sample rate at 3V */
 279                                 * 26 /* command + data + overhead */,
 280         .bus_num        = 1,
 281         .chip_select    = 0,
 282 },
 283 };
 284
 285 static struct resource smc91x_resources[] = {
 286         [0] = {
 287                 .name   = "smc91x-regs",
 288                 .start  = 0x0c000c00,
 289                 .end    = 0x0c0fffff,
 290                 .flags  = IORESOURCE_MEM,
 291         },
 292         [1] = {
 293                 .start  = LUBBOCK_ETH_IRQ,
 294                 .end    = LUBBOCK_ETH_IRQ,
 295                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 296         },
 297         [2] = {
 298                 .name   = "smc91x-attrib",
 299                 .start  = 0x0e000000,
 300                 .end    = 0x0e0fffff,
 301                 .flags  = IORESOURCE_MEM,
 302         },
 303 };
 304
 305 static struct smc91x_platdata lubbock_smc91x_info = {
 306         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
 307 };
 308
 309 static struct platform_device smc91x_device = {
 310         .name           = "smc91x",
 311         .id             = -1,
 312         .num_resources  = ARRAY_SIZE(smc91x_resources),
 313         .resource       = smc91x_resources,
 314         .dev            = {
 315                 .platform_data = &lubbock_smc91x_info,
 316         },
 317 };
 318
 319 static struct resource flash_resources[] = {
 320         [0] = {
 321                 .start  = 0x00000000,
 322                 .end    = SZ_64M - 1,
 323                 .flags  = IORESOURCE_MEM,
 324         },
 325         [1] = {
 326                 .start  = 0x04000000,
 327                 .end    = 0x04000000 + SZ_64M - 1,
 328                 .flags  = IORESOURCE_MEM,
 329         },
 330 };
 331
 332 static struct mtd_partition lubbock_partitions[] = {
 333         {
 334                 .name =         "Bootloader",
 335                 .size =         0x00040000,
 336                 .offset =       0,
 337                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 338         },{
 339                 .name =         "Kernel",
 340                 .size =         0x00100000,
 341                 .offset =       0x00040000,
 342         },{
 343                 .name =         "Filesystem",
 344                 .size =         MTDPART_SIZ_FULL,
 345                 .offset =       0x00140000
 346         }
 347 };
 348
 349 static struct flash_platform_data lubbock_flash_data[2] = {
 350         {
 351                 .map_name       = "cfi_probe",
 352                 .parts          = lubbock_partitions,
 353                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
 354         }, {
 355                 .map_name       = "cfi_probe",
 356                 .parts          = NULL,
 357                 .nr_parts       = 0,
 358         }
 359 };
 360
 361 static struct platform_device lubbock_flash_device[2] = {
 362         {
 363                 .name           = "pxa2xx-flash",
 364                 .id             = 0,
 365                 .dev = {
 366                         .platform_data = &lubbock_flash_data[0],
 367                 },
 368                 .resource = &flash_resources[0],
 369                 .num_resources = 1,
 370         },
 371         {
 372                 .name           = "pxa2xx-flash",
 373                 .id             = 1,
 374                 .dev = {
 375                         .platform_data = &lubbock_flash_data[1],
 376                 },
 377                 .resource = &flash_resources[1],
 378                 .num_resources = 1,
 379         },
 380 };
 381
 382 static struct platform_device *devices[] __initdata = {
 383         &sa1111_device,
 384         &smc91x_device,
 385         &lubbock_flash_device[0],
 386         &lubbock_flash_device[1],
 387 };
 388
 389 static struct pxafb_mode_info sharp_lm8v31_mode = {
 390         .pixclock       = 270000,
 391         .xres           = 640,
 392         .yres           = 480,
 393         .bpp            = 16,
 394         .hsync_len      = 1,
 395         .left_margin    = 3,
 396         .right_margin   = 3,
 397         .vsync_len      = 1,
 398         .upper_margin   = 0,
 399         .lower_margin   = 0,
 400         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 401         .cmap_greyscale = 0,
 402 };
 403
 404 static struct pxafb_mach_info sharp_lm8v31 = {
 405         .modes          = &sharp_lm8v31_mode,
 406         .num_modes      = 1,
 407         .cmap_inverse   = 0,
 408         .cmap_static    = 0,
 409         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 410                           LCD_AC_BIAS_FREQ(255),
 411 };
 412
 413 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 414
 415 static void lubbock_mmc_poll(unsigned long);
 416 static irq_handler_t mmc_detect_int;
 417
 418 static struct timer_list mmc_timer = {
 419         .function       = lubbock_mmc_poll,
 420 };
 421
 422 static void lubbock_mmc_poll(unsigned long data)
 423 {
 424         unsigned long flags;
 425
 426         /* clear any previous irq state, then ... */
 427         local_irq_save(flags);
 428         LUB_IRQ_SET_CLR &= ~(1 << 0);
 429         local_irq_restore(flags);
 430
 431         /* poll until mmc/sd card is removed */
 432         if (LUB_IRQ_SET_CLR & (1 << 0))
 433                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 434         else {
 435                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
 436                 enable_irq(LUBBOCK_SD_IRQ);
 437         }
 438 }
 439
 440 static irqreturn_t lubbock_detect_int(int irq, void *data)
 441 {
 442         /* IRQ is level triggered; disable, and poll for removal */
 443         disable_irq(irq);
 444         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 445
 446         return mmc_detect_int(irq, data);
 447 }
 448
 449 static int lubbock_mci_init(struct device *dev,
 450                 irq_handler_t detect_int,
 451                 void *data)
 452 {
 453         /* detect card insert/eject */
 454         mmc_detect_int = detect_int;
 455         init_timer(&mmc_timer);
 456         mmc_timer.data = (unsigned long) data;
 457         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 458                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
 459 }
 460
 461 static int lubbock_mci_get_ro(struct device *dev)
 462 {
 463         return (LUB_MISC_RD & (1 << 2)) != 0;
 464 }
 465
 466 static void lubbock_mci_exit(struct device *dev, void *data)
 467 {
 468         free_irq(LUBBOCK_SD_IRQ, data);
 469         del_timer_sync(&mmc_timer);
 470 }
 471
 472 static struct pxamci_platform_data lubbock_mci_platform_data = {
 473         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 474         .detect_delay_ms        = 10,
 475         .init                   = lubbock_mci_init,
 476         .get_ro                 = lubbock_mci_get_ro,
 477         .exit                   = lubbock_mci_exit,
 478         .gpio_card_detect       = -1,
 479         .gpio_card_ro           = -1,
 480         .gpio_power             = -1,
 481 };
 482
 483 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 484 {
 485         unsigned long flags;
 486
 487         local_irq_save(flags);
 488         if (mode & IR_SIRMODE) {
 489                 LUB_MISC_WR &= ~(1 << 4);
 490         } else if (mode & IR_FIRMODE) {
 491                 LUB_MISC_WR |= 1 << 4;
 492         }
 493         pxa2xx_transceiver_mode(dev, mode);
 494         local_irq_restore(flags);
 495 }
 496
 497 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 498         .gpio_pwdown            = -1,
 499         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
 500         .transceiver_mode       = lubbock_irda_transceiver_mode,
 501 };
 502
 503 static void __init lubbock_init(void)
 504 {
 505         int flashboot = (LUB_CONF_SWITCHES & 1);
 506
 507         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
 508
 509         pxa_set_ffuart_info(NULL);
 510         pxa_set_btuart_info(NULL);
 511         pxa_set_stuart_info(NULL);
 512
 513         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
 514         pxa_set_udc_info(&udc_info);
 515         pxa_set_fb_info(NULL, &sharp_lm8v31);
 516         pxa_set_mci_info(&lubbock_mci_platform_data);
 517         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 518         pxa_set_ac97_info(NULL);
 519
 520         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 521                 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
 522         /* Compensate for the nROMBT switch which swaps the flash banks */
 523         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
 524                flashboot?"Flash":"ROM", flashboot);
 525
 526         lubbock_flash_data[flashboot^1].name = "application-flash";
 527         lubbock_flash_data[flashboot].name = "boot-rom";
 528         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 529
 530         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 531         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 532 }
 533
 534 static struct map_desc lubbock_io_desc[] __initdata = {
 535         {       /* CPLD */
 536                 .virtual        =  LUBBOCK_FPGA_VIRT,
 537                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 538                 .length         = 0x00100000,
 539                 .type           = MT_DEVICE
 540         }
 541 };
 542
 543 static void __init lubbock_map_io(void)
 544 {
 545         pxa25x_map_io();
 546         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 547
 548         PCFR |= PCFR_OPDE;
 549 }
 550
 551 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 552         /* Maintainer: MontaVista Software Inc. */
 553         .map_io         = lubbock_map_io,
 554         .nr_irqs        = LUBBOCK_NR_IRQS,
 555         .init_irq       = lubbock_init_irq,
 556         .handle_irq     = pxa25x_handle_irq,
 557         .timer          = &pxa_timer,
 558         .init_machine   = lubbock_init,
 559 MACHINE_END