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 <mach/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
  53 #include "generic.h"
  54 #include "clock.h"
  55 #include "devices.h"
  56
  57 static unsigned long lubbock_pin_config[] __initdata = {
  58         GPIO15_nCS_1,   /* CS1 - Flash */
  59         GPIO78_nCS_2,   /* CS2 - Baseboard FGPA */
  60         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
  61         GPIO80_nCS_4,   /* CS4 - SA1111 */
  62
  63         /* SSP data pins */
  64         GPIO23_SSP1_SCLK,
  65         GPIO25_SSP1_TXD,
  66         GPIO26_SSP1_RXD,
  67
  68         /* LCD - 16bpp DSTN */
  69         GPIO58_LCD_LDD_0,
  70         GPIO59_LCD_LDD_1,
  71         GPIO60_LCD_LDD_2,
  72         GPIO61_LCD_LDD_3,
  73         GPIO62_LCD_LDD_4,
  74         GPIO63_LCD_LDD_5,
  75         GPIO64_LCD_LDD_6,
  76         GPIO65_LCD_LDD_7,
  77         GPIO66_LCD_LDD_8,
  78         GPIO67_LCD_LDD_9,
  79         GPIO68_LCD_LDD_10,
  80         GPIO69_LCD_LDD_11,
  81         GPIO70_LCD_LDD_12,
  82         GPIO71_LCD_LDD_13,
  83         GPIO72_LCD_LDD_14,
  84         GPIO73_LCD_LDD_15,
  85         GPIO74_LCD_FCLK,
  86         GPIO75_LCD_LCLK,
  87         GPIO76_LCD_PCLK,
  88
  89         /* BTUART */
  90         GPIO42_BTUART_RXD,
  91         GPIO43_BTUART_TXD,
  92         GPIO44_BTUART_CTS,
  93         GPIO45_BTUART_RTS,
  94
  95         /* PC Card */
  96         GPIO48_nPOE,
  97         GPIO49_nPWE,
  98         GPIO50_nPIOR,
  99         GPIO51_nPIOW,
 100         GPIO52_nPCE_1,
 101         GPIO53_nPCE_2,
 102         GPIO54_nPSKTSEL,
 103         GPIO55_nPREG,
 104         GPIO56_nPWAIT,
 105         GPIO57_nIOIS16,
 106
 107         /* MMC */
 108         GPIO6_MMC_CLK,
 109         GPIO8_MMC_CS0,
 110
 111         /* wakeup */
 112         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
 113 };
 114
 115 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
 116
 117 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
 118 {
 119         unsigned long flags;
 120
 121         local_irq_save(flags);
 122         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
 123         local_irq_restore(flags);
 124 }
 125 EXPORT_SYMBOL(lubbock_set_misc_wr);
 126
 127 static unsigned long lubbock_irq_enabled;
 128
 129 static void lubbock_mask_irq(unsigned int irq)
 130 {
 131         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
 132         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
 133 }
 134
 135 static void lubbock_unmask_irq(unsigned int irq)
 136 {
 137         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
 138         /* the irq can be acknowledged only if deasserted, so it's done here */
 139         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
 140         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
 141 }
 142
 143 static struct irq_chip lubbock_irq_chip = {
 144         .name           = "FPGA",
 145         .ack            = lubbock_mask_irq,
 146         .mask           = lubbock_mask_irq,
 147         .unmask         = lubbock_unmask_irq,
 148 };
 149
 150 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
 151 {
 152         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
 153         do {
 154                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
 155                 if (likely(pending)) {
 156                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
 157                         generic_handle_irq(irq);
 158                 }
 159                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
 160         } while (pending);
 161 }
 162
 163 static void __init lubbock_init_irq(void)
 164 {
 165         int irq;
 166
 167         pxa25x_init_irq();
 168
 169         /* setup extra lubbock irqs */
 170         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 171                 set_irq_chip(irq, &lubbock_irq_chip);
 172                 set_irq_handler(irq, handle_level_irq);
 173                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 174         }
 175
 176         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 177         set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
 178 }
 179
 180 #ifdef CONFIG_PM
 181
 182 static int lubbock_irq_resume(struct sys_device *dev)
 183 {
 184         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
 185         return 0;
 186 }
 187
 188 static struct sysdev_class lubbock_irq_sysclass = {
 189         .name = "cpld_irq",
 190         .resume = lubbock_irq_resume,
 191 };
 192
 193 static struct sys_device lubbock_irq_device = {
 194         .cls = &lubbock_irq_sysclass,
 195 };
 196
 197 static int __init lubbock_irq_device_init(void)
 198 {
 199         int ret = -ENODEV;
 200
 201         if (machine_is_lubbock()) {
 202                 ret = sysdev_class_register(&lubbock_irq_sysclass);
 203                 if (ret == 0)
 204                         ret = sysdev_register(&lubbock_irq_device);
 205         }
 206         return ret;
 207 }
 208
 209 device_initcall(lubbock_irq_device_init);
 210
 211 #endif
 212
 213 static int lubbock_udc_is_connected(void)
 214 {
 215         return (LUB_MISC_RD & (1 << 9)) == 0;
 216 }
 217
 218 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 219         .udc_is_connected       = lubbock_udc_is_connected,
 220         // no D+ pullup; lubbock can't connect/disconnect in software
 221 };
 222
 223 static struct resource sa1111_resources[] = {
 224         [0] = {
 225                 .start  = 0x10000000,
 226                 .end    = 0x10001fff,
 227                 .flags  = IORESOURCE_MEM,
 228         },
 229         [1] = {
 230                 .start  = LUBBOCK_SA1111_IRQ,
 231                 .end    = LUBBOCK_SA1111_IRQ,
 232                 .flags  = IORESOURCE_IRQ,
 233         },
 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 };
 242
 243 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
 244  * you can select it to replace the ucb1400 by switching the touchscreen cable
 245  * (to J5) and poking board registers (as done below).  Else it's only useful
 246  * for the temperature sensors.
 247  */
 248 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 249         .num_chipselect = 1,
 250 };
 251
 252 static int lubbock_ads7846_pendown_state(void)
 253 {
 254         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
 255         return 0;
 256 }
 257
 258 static struct ads7846_platform_data ads_info = {
 259         .model                  = 7846,
 260         .vref_delay_usecs       = 100,          /* internal, no cap */
 261         .get_pendown_state      = lubbock_ads7846_pendown_state,
 262         // .x_plate_ohms                = 500,  /* GUESS! */
 263         // .y_plate_ohms                = 500,  /* GUESS! */
 264 };
 265
 266 static void ads7846_cs(u32 command)
 267 {
 268         static const unsigned   TS_nCS = 1 << 11;
 269         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
 270 }
 271
 272 static struct pxa2xx_spi_chip ads_hw = {
 273         .tx_threshold           = 1,
 274         .rx_threshold           = 2,
 275         .cs_control             = ads7846_cs,
 276 };
 277
 278 static struct spi_board_info spi_board_info[] __initdata = { {
 279         .modalias       = "ads7846",
 280         .platform_data  = &ads_info,
 281         .controller_data = &ads_hw,
 282         .irq            = LUBBOCK_BB_IRQ,
 283         .max_speed_hz   = 120000 /* max sample rate at 3V */
 284                                 * 26 /* command + data + overhead */,
 285         .bus_num        = 1,
 286         .chip_select    = 0,
 287 },
 288 };
 289
 290 static struct resource smc91x_resources[] = {
 291         [0] = {
 292                 .name   = "smc91x-regs",
 293                 .start  = 0x0c000c00,
 294                 .end    = 0x0c0fffff,
 295                 .flags  = IORESOURCE_MEM,
 296         },
 297         [1] = {
 298                 .start  = LUBBOCK_ETH_IRQ,
 299                 .end    = LUBBOCK_ETH_IRQ,
 300                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 301         },
 302         [2] = {
 303                 .name   = "smc91x-attrib",
 304                 .start  = 0x0e000000,
 305                 .end    = 0x0e0fffff,
 306                 .flags  = IORESOURCE_MEM,
 307         },
 308 };
 309
 310 static struct smc91x_platdata lubbock_smc91x_info = {
 311         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
 312 };
 313
 314 static struct platform_device smc91x_device = {
 315         .name           = "smc91x",
 316         .id             = -1,
 317         .num_resources  = ARRAY_SIZE(smc91x_resources),
 318         .resource       = smc91x_resources,
 319         .dev            = {
 320                 .platform_data = &lubbock_smc91x_info,
 321         },
 322 };
 323
 324 static struct resource flash_resources[] = {
 325         [0] = {
 326                 .start  = 0x00000000,
 327                 .end    = SZ_64M - 1,
 328                 .flags  = IORESOURCE_MEM,
 329         },
 330         [1] = {
 331                 .start  = 0x04000000,
 332                 .end    = 0x04000000 + SZ_64M - 1,
 333                 .flags  = IORESOURCE_MEM,
 334         },
 335 };
 336
 337 static struct mtd_partition lubbock_partitions[] = {
 338         {
 339                 .name =         "Bootloader",
 340                 .size =         0x00040000,
 341                 .offset =       0,
 342                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 343         },{
 344                 .name =         "Kernel",
 345                 .size =         0x00100000,
 346                 .offset =       0x00040000,
 347         },{
 348                 .name =         "Filesystem",
 349                 .size =         MTDPART_SIZ_FULL,
 350                 .offset =       0x00140000
 351         }
 352 };
 353
 354 static struct flash_platform_data lubbock_flash_data[2] = {
 355         {
 356                 .map_name       = "cfi_probe",
 357                 .parts          = lubbock_partitions,
 358                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
 359         }, {
 360                 .map_name       = "cfi_probe",
 361                 .parts          = NULL,
 362                 .nr_parts       = 0,
 363         }
 364 };
 365
 366 static struct platform_device lubbock_flash_device[2] = {
 367         {
 368                 .name           = "pxa2xx-flash",
 369                 .id             = 0,
 370                 .dev = {
 371                         .platform_data = &lubbock_flash_data[0],
 372                 },
 373                 .resource = &flash_resources[0],
 374                 .num_resources = 1,
 375         },
 376         {
 377                 .name           = "pxa2xx-flash",
 378                 .id             = 1,
 379                 .dev = {
 380                         .platform_data = &lubbock_flash_data[1],
 381                 },
 382                 .resource = &flash_resources[1],
 383                 .num_resources = 1,
 384         },
 385 };
 386
 387 static struct platform_device *devices[] __initdata = {
 388         &sa1111_device,
 389         &smc91x_device,
 390         &lubbock_flash_device[0],
 391         &lubbock_flash_device[1],
 392 };
 393
 394 static struct pxafb_mode_info sharp_lm8v31_mode = {
 395         .pixclock       = 270000,
 396         .xres           = 640,
 397         .yres           = 480,
 398         .bpp            = 16,
 399         .hsync_len      = 1,
 400         .left_margin    = 3,
 401         .right_margin   = 3,
 402         .vsync_len      = 1,
 403         .upper_margin   = 0,
 404         .lower_margin   = 0,
 405         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 406         .cmap_greyscale = 0,
 407 };
 408
 409 static struct pxafb_mach_info sharp_lm8v31 = {
 410         .modes          = &sharp_lm8v31_mode,
 411         .num_modes      = 1,
 412         .cmap_inverse   = 0,
 413         .cmap_static    = 0,
 414         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 415                           LCD_AC_BIAS_FREQ(255),
 416 };
 417
 418 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 419
 420 static void lubbock_mmc_poll(unsigned long);
 421 static irq_handler_t mmc_detect_int;
 422
 423 static struct timer_list mmc_timer = {
 424         .function       = lubbock_mmc_poll,
 425 };
 426
 427 static void lubbock_mmc_poll(unsigned long data)
 428 {
 429         unsigned long flags;
 430
 431         /* clear any previous irq state, then ... */
 432         local_irq_save(flags);
 433         LUB_IRQ_SET_CLR &= ~(1 << 0);
 434         local_irq_restore(flags);
 435
 436         /* poll until mmc/sd card is removed */
 437         if (LUB_IRQ_SET_CLR & (1 << 0))
 438                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 439         else {
 440                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
 441                 enable_irq(LUBBOCK_SD_IRQ);
 442         }
 443 }
 444
 445 static irqreturn_t lubbock_detect_int(int irq, void *data)
 446 {
 447         /* IRQ is level triggered; disable, and poll for removal */
 448         disable_irq(irq);
 449         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 450
 451         return mmc_detect_int(irq, data);
 452 }
 453
 454 static int lubbock_mci_init(struct device *dev,
 455                 irq_handler_t detect_int,
 456                 void *data)
 457 {
 458         /* detect card insert/eject */
 459         mmc_detect_int = detect_int;
 460         init_timer(&mmc_timer);
 461         mmc_timer.data = (unsigned long) data;
 462         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 463                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
 464 }
 465
 466 static int lubbock_mci_get_ro(struct device *dev)
 467 {
 468         return (LUB_MISC_RD & (1 << 2)) != 0;
 469 }
 470
 471 static void lubbock_mci_exit(struct device *dev, void *data)
 472 {
 473         free_irq(LUBBOCK_SD_IRQ, data);
 474         del_timer_sync(&mmc_timer);
 475 }
 476
 477 static struct pxamci_platform_data lubbock_mci_platform_data = {
 478         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 479         .detect_delay   = 1,
 480         .init           = lubbock_mci_init,
 481         .get_ro         = lubbock_mci_get_ro,
 482         .exit           = lubbock_mci_exit,
 483 };
 484
 485 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 486 {
 487         unsigned long flags;
 488
 489         local_irq_save(flags);
 490         if (mode & IR_SIRMODE) {
 491                 LUB_MISC_WR &= ~(1 << 4);
 492         } else if (mode & IR_FIRMODE) {
 493                 LUB_MISC_WR |= 1 << 4;
 494         }
 495         pxa2xx_transceiver_mode(dev, mode);
 496         local_irq_restore(flags);
 497 }
 498
 499 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 500         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
 501         .transceiver_mode = lubbock_irda_transceiver_mode,
 502 };
 503
 504 static void __init lubbock_init(void)
 505 {
 506         int flashboot = (LUB_CONF_SWITCHES & 1);
 507
 508         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
 509
 510         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
 511         pxa_set_udc_info(&udc_info);
 512         set_pxa_fb_info(&sharp_lm8v31);
 513         pxa_set_mci_info(&lubbock_mci_platform_data);
 514         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 515         pxa_set_ac97_info(NULL);
 516
 517         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 518                 (BOOT_DEF & 1) ? 2 : 4;
 519         /* Compensate for the nROMBT switch which swaps the flash banks */
 520         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
 521                flashboot?"Flash":"ROM", flashboot);
 522
 523         lubbock_flash_data[flashboot^1].name = "application-flash";
 524         lubbock_flash_data[flashboot].name = "boot-rom";
 525         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 526
 527         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 528         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 529 }
 530
 531 static struct map_desc lubbock_io_desc[] __initdata = {
 532         {       /* CPLD */
 533                 .virtual        =  LUBBOCK_FPGA_VIRT,
 534                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 535                 .length         = 0x00100000,
 536                 .type           = MT_DEVICE
 537         }
 538 };
 539
 540 static void __init lubbock_map_io(void)
 541 {
 542         pxa_map_io();
 543         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 544
 545         PCFR |= PCFR_OPDE;
 546 }
 547
 548 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 549         /* Maintainer: MontaVista Software Inc. */
 550         .phys_io        = 0x40000000,
 551         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 552         .map_io         = lubbock_map_io,
 553         .init_irq       = lubbock_init_irq,
 554         .timer          = &pxa_timer,
 555         .init_machine   = lubbock_init,
 556 MACHINE_END