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/gpio.h> 15#include <linux/gpio/machine.h> 16#include <linux/module.h> 17#include <linux/kernel.h> 18#include <linux/init.h> 19#include <linux/io.h> 20#include <linux/platform_device.h> 21#include <linux/syscore_ops.h> 22#include <linux/major.h> 23#include <linux/fb.h> 24#include <linux/interrupt.h> 25#include <linux/mtd/mtd.h> 26#include <linux/mtd/partitions.h> 27#include <linux/smc91x.h> 28#include <linux/slab.h> 29#include <linux/leds.h> 30 31#include <linux/spi/spi.h> 32#include <linux/spi/ads7846.h> 33#include <linux/spi/pxa2xx_spi.h> 34 35#include <asm/setup.h> 36#include <asm/memory.h> 37#include <asm/mach-types.h> 38#include <mach/hardware.h> 39#include <asm/irq.h> 40#include <asm/sizes.h> 41 42#include <asm/mach/arch.h> 43#include <asm/mach/map.h> 44#include <asm/mach/irq.h> 45#include <asm/mach/flash.h> 46 47#include <asm/hardware/sa1111.h> 48 49#include <mach/pxa25x.h> 50#include <mach/audio.h> 51#include <mach/lubbock.h> 52#include <mach/udc.h> 53#include <linux/platform_data/irda-pxaficp.h> 54#include <linux/platform_data/video-pxafb.h> 55#include <linux/platform_data/mmc-pxamci.h> 56#include <mach/pm.h> 57#include <mach/smemc.h> 58 59#include "generic.h" 60#include "clock.h" 61#include "devices.h" 62 63static 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 /* wakeup */ 106 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, 107}; 108 109#define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010) 110#define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080) 111 112void lubbock_set_hexled(uint32_t value) 113{ 114 LUB_HEXLED = value; 115} 116 117void 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} 125EXPORT_SYMBOL(lubbock_set_misc_wr); 126 127static int lubbock_udc_is_connected(void) 128{ 129 return (LUB_MISC_RD & (1 << 9)) == 0; 130} 131 132static struct pxa2xx_udc_mach_info udc_info __initdata = { 133 .udc_is_connected = lubbock_udc_is_connected, 134 // no D+ pullup; lubbock can't connect/disconnect in software 135}; 136 137static struct resource sa1111_resources[] = { 138 [0] = { 139 .start = 0x10000000, 140 .end = 0x10001fff, 141 .flags = IORESOURCE_MEM, 142 }, 143 [1] = { 144 .start = LUBBOCK_SA1111_IRQ, 145 .end = LUBBOCK_SA1111_IRQ, 146 .flags = IORESOURCE_IRQ, 147 }, 148}; 149 150static struct sa1111_platform_data sa1111_info = { 151 .irq_base = LUBBOCK_SA1111_IRQ_BASE, 152 .disable_devs = SA1111_DEVID_SAC, 153}; 154 155static struct platform_device sa1111_device = { 156 .name = "sa1111", 157 .id = -1, 158 .num_resources = ARRAY_SIZE(sa1111_resources), 159 .resource = sa1111_resources, 160 .dev = { 161 .platform_data = &sa1111_info, 162 }, 163}; 164 165/* ADS7846 is connected through SSP ... and if your board has J5 populated, 166 * you can select it to replace the ucb1400 by switching the touchscreen cable 167 * (to J5) and poking board registers (as done below). Else it's only useful 168 * for the temperature sensors. 169 */ 170static struct pxa2xx_spi_master pxa_ssp_master_info = { 171 .num_chipselect = 1, 172}; 173 174static int lubbock_ads7846_pendown_state(void) 175{ 176 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */ 177 return 0; 178} 179 180static struct ads7846_platform_data ads_info = { 181 .model = 7846, 182 .vref_delay_usecs = 100, /* internal, no cap */ 183 .get_pendown_state = lubbock_ads7846_pendown_state, 184 // .x_plate_ohms = 500, /* GUESS! */ 185 // .y_plate_ohms = 500, /* GUESS! */ 186}; 187 188static void ads7846_cs(u32 command) 189{ 190 static const unsigned TS_nCS = 1 << 11; 191 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS); 192} 193 194static struct pxa2xx_spi_chip ads_hw = { 195 .tx_threshold = 1, 196 .rx_threshold = 2, 197 .cs_control = ads7846_cs, 198}; 199 200static struct spi_board_info spi_board_info[] __initdata = { { 201 .modalias = "ads7846", 202 .platform_data = &ads_info, 203 .controller_data = &ads_hw, 204 .irq = LUBBOCK_BB_IRQ, 205 .max_speed_hz = 120000 /* max sample rate at 3V */ 206 * 26 /* command + data + overhead */, 207 .bus_num = 1, 208 .chip_select = 0, 209}, 210}; 211 212static struct resource smc91x_resources[] = { 213 [0] = { 214 .name = "smc91x-regs", 215 .start = 0x0c000c00, 216 .end = 0x0c0fffff, 217 .flags = IORESOURCE_MEM, 218 }, 219 [1] = { 220 .start = LUBBOCK_ETH_IRQ, 221 .end = LUBBOCK_ETH_IRQ, 222 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, 223 }, 224 [2] = { 225 .name = "smc91x-attrib", 226 .start = 0x0e000000, 227 .end = 0x0e0fffff, 228 .flags = IORESOURCE_MEM, 229 }, 230}; 231 232static struct smc91x_platdata lubbock_smc91x_info = { 233 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2, 234}; 235 236static struct platform_device smc91x_device = { 237 .name = "smc91x", 238 .id = -1, 239 .num_resources = ARRAY_SIZE(smc91x_resources), 240 .resource = smc91x_resources, 241 .dev = { 242 .platform_data = &lubbock_smc91x_info, 243 }, 244}; 245 246static struct resource flash_resources[] = { 247 [0] = { 248 .start = 0x00000000, 249 .end = SZ_64M - 1, 250 .flags = IORESOURCE_MEM, 251 }, 252 [1] = { 253 .start = 0x04000000, 254 .end = 0x04000000 + SZ_64M - 1, 255 .flags = IORESOURCE_MEM, 256 }, 257}; 258 259static struct mtd_partition lubbock_partitions[] = { 260 { 261 .name = "Bootloader", 262 .size = 0x00040000, 263 .offset = 0, 264 .mask_flags = MTD_WRITEABLE /* force read-only */ 265 },{ 266 .name = "Kernel", 267 .size = 0x00100000, 268 .offset = 0x00040000, 269 },{ 270 .name = "Filesystem", 271 .size = MTDPART_SIZ_FULL, 272 .offset = 0x00140000 273 } 274}; 275 276static struct flash_platform_data lubbock_flash_data[2] = { 277 { 278 .map_name = "cfi_probe", 279 .parts = lubbock_partitions, 280 .nr_parts = ARRAY_SIZE(lubbock_partitions), 281 }, { 282 .map_name = "cfi_probe", 283 .parts = NULL, 284 .nr_parts = 0, 285 } 286}; 287 288static struct platform_device lubbock_flash_device[2] = { 289 { 290 .name = "pxa2xx-flash", 291 .id = 0, 292 .dev = { 293 .platform_data = &lubbock_flash_data[0], 294 }, 295 .resource = &flash_resources[0], 296 .num_resources = 1, 297 }, 298 { 299 .name = "pxa2xx-flash", 300 .id = 1, 301 .dev = { 302 .platform_data = &lubbock_flash_data[1], 303 }, 304 .resource = &flash_resources[1], 305 .num_resources = 1, 306 }, 307}; 308 309static struct resource lubbock_cplds_resources[] = { 310 [0] = { 311 .start = LUBBOCK_FPGA_PHYS + 0xc0, 312 .end = LUBBOCK_FPGA_PHYS + 0xe0 - 1, 313 .flags = IORESOURCE_MEM, 314 }, 315 [1] = { 316 .start = PXA_GPIO_TO_IRQ(0), 317 .end = PXA_GPIO_TO_IRQ(0), 318 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE, 319 }, 320 [2] = { 321 .start = LUBBOCK_IRQ(0), 322 .end = LUBBOCK_IRQ(6), 323 .flags = IORESOURCE_IRQ, 324 }, 325}; 326 327static struct platform_device lubbock_cplds_device = { 328 .name = "pxa_cplds_irqs", 329 .id = -1, 330 .resource = &lubbock_cplds_resources[0], 331 .num_resources = 3, 332}; 333 334 335static struct platform_device *devices[] __initdata = { 336 &sa1111_device, 337 &smc91x_device, 338 &lubbock_flash_device[0], 339 &lubbock_flash_device[1], 340 &lubbock_cplds_device, 341}; 342 343static struct pxafb_mode_info sharp_lm8v31_mode = { 344 .pixclock = 270000, 345 .xres = 640, 346 .yres = 480, 347 .bpp = 16, 348 .hsync_len = 1, 349 .left_margin = 3, 350 .right_margin = 3, 351 .vsync_len = 1, 352 .upper_margin = 0, 353 .lower_margin = 0, 354 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 355 .cmap_greyscale = 0, 356}; 357 358static struct pxafb_mach_info sharp_lm8v31 = { 359 .modes = &sharp_lm8v31_mode, 360 .num_modes = 1, 361 .cmap_inverse = 0, 362 .cmap_static = 0, 363 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL | 364 LCD_AC_BIAS_FREQ(255), 365}; 366 367#define MMC_POLL_RATE msecs_to_jiffies(1000) 368 369static void lubbock_mmc_poll(unsigned long); 370static irq_handler_t mmc_detect_int; 371 372static struct timer_list mmc_timer = { 373 .function = lubbock_mmc_poll, 374}; 375 376static void lubbock_mmc_poll(unsigned long data) 377{ 378 unsigned long flags; 379 380 /* clear any previous irq state, then ... */ 381 local_irq_save(flags); 382 LUB_IRQ_SET_CLR &= ~(1 << 0); 383 local_irq_restore(flags); 384 385 /* poll until mmc/sd card is removed */ 386 if (LUB_IRQ_SET_CLR & (1 << 0)) 387 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE); 388 else { 389 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data); 390 enable_irq(LUBBOCK_SD_IRQ); 391 } 392} 393 394static irqreturn_t lubbock_detect_int(int irq, void *data) 395{ 396 /* IRQ is level triggered; disable, and poll for removal */ 397 disable_irq(irq); 398 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE); 399 400 return mmc_detect_int(irq, data); 401} 402 403static int lubbock_mci_init(struct device *dev, 404 irq_handler_t detect_int, 405 void *data) 406{ 407 /* detect card insert/eject */ 408 mmc_detect_int = detect_int; 409 init_timer(&mmc_timer); 410 mmc_timer.data = (unsigned long) data; 411 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int, 412 0, "lubbock-sd-detect", data); 413} 414 415static int lubbock_mci_get_ro(struct device *dev) 416{ 417 return (LUB_MISC_RD & (1 << 2)) != 0; 418} 419 420static void lubbock_mci_exit(struct device *dev, void *data) 421{ 422 free_irq(LUBBOCK_SD_IRQ, data); 423 del_timer_sync(&mmc_timer); 424} 425 426static struct pxamci_platform_data lubbock_mci_platform_data = { 427 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, 428 .detect_delay_ms = 10, 429 .init = lubbock_mci_init, 430 .get_ro = lubbock_mci_get_ro, 431 .exit = lubbock_mci_exit, 432 .gpio_card_detect = -1, 433 .gpio_card_ro = -1, 434 .gpio_power = -1, 435}; 436 437static void lubbock_irda_transceiver_mode(struct device *dev, int mode) 438{ 439 unsigned long flags; 440 441 local_irq_save(flags); 442 if (mode & IR_SIRMODE) { 443 LUB_MISC_WR &= ~(1 << 4); 444 } else if (mode & IR_FIRMODE) { 445 LUB_MISC_WR |= 1 << 4; 446 } 447 pxa2xx_transceiver_mode(dev, mode); 448 local_irq_restore(flags); 449} 450 451static struct pxaficp_platform_data lubbock_ficp_platform_data = { 452 .gpio_pwdown = -1, 453 .transceiver_cap = IR_SIRMODE | IR_FIRMODE, 454 .transceiver_mode = lubbock_irda_transceiver_mode, 455}; 456 457static void __init lubbock_init(void) 458{ 459 int flashboot = (LUB_CONF_SWITCHES & 1); 460 461 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config)); 462 463 pxa_set_ffuart_info(NULL); 464 pxa_set_btuart_info(NULL); 465 pxa_set_stuart_info(NULL); 466 467 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL); 468 pxa_set_udc_info(&udc_info); 469 pxa_set_fb_info(NULL, &sharp_lm8v31); 470 pxa_set_mci_info(&lubbock_mci_platform_data); 471 pxa_set_ficp_info(&lubbock_ficp_platform_data); 472 pxa_set_ac97_info(NULL); 473 474 lubbock_flash_data[0].width = lubbock_flash_data[1].width = 475 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4; 476 /* Compensate for the nROMBT switch which swaps the flash banks */ 477 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n", 478 flashboot?"Flash":"ROM", flashboot); 479 480 lubbock_flash_data[flashboot^1].name = "application-flash"; 481 lubbock_flash_data[flashboot].name = "boot-rom"; 482 (void) platform_add_devices(devices, ARRAY_SIZE(devices)); 483 484 pxa2xx_set_spi_info(1, &pxa_ssp_master_info); 485 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); 486} 487 488static struct map_desc lubbock_io_desc[] __initdata = { 489 { /* CPLD */ 490 .virtual = LUBBOCK_FPGA_VIRT, 491 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS), 492 .length = 0x00100000, 493 .type = MT_DEVICE 494 } 495}; 496 497static void __init lubbock_map_io(void) 498{ 499 pxa25x_map_io(); 500 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); 501 502 PCFR |= PCFR_OPDE; 503} 504 505/* 506 * Driver for the 8 discrete LEDs available for general use: 507 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays 508 * so be sure to not monkey with them here. 509 */ 510 511#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) 512struct lubbock_led { 513 struct led_classdev cdev; 514 u8 mask; 515}; 516 517/* 518 * The triggers lines up below will only be used if the 519 * LED triggers are compiled in. 520 */ 521static const struct { 522 const char *name; 523 const char *trigger; 524} lubbock_leds[] = { 525 { "lubbock:D28", "default-on", }, 526 { "lubbock:D27", "cpu0", }, 527 { "lubbock:D26", "heartbeat" }, 528 { "lubbock:D25", }, 529 { "lubbock:D24", }, 530 { "lubbock:D23", }, 531 { "lubbock:D22", }, 532 { "lubbock:D21", }, 533}; 534 535static void lubbock_led_set(struct led_classdev *cdev, 536 enum led_brightness b) 537{ 538 struct lubbock_led *led = container_of(cdev, 539 struct lubbock_led, cdev); 540 u32 reg = LUB_DISC_BLNK_LED; 541 542 if (b != LED_OFF) 543 reg |= led->mask; 544 else 545 reg &= ~led->mask; 546 547 LUB_DISC_BLNK_LED = reg; 548} 549 550static enum led_brightness lubbock_led_get(struct led_classdev *cdev) 551{ 552 struct lubbock_led *led = container_of(cdev, 553 struct lubbock_led, cdev); 554 u32 reg = LUB_DISC_BLNK_LED; 555 556 return (reg & led->mask) ? LED_FULL : LED_OFF; 557} 558 559static int __init lubbock_leds_init(void) 560{ 561 int i; 562 563 if (!machine_is_lubbock()) 564 return -ENODEV; 565 566 /* All ON */ 567 LUB_DISC_BLNK_LED |= 0xff; 568 for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) { 569 struct lubbock_led *led; 570 571 led = kzalloc(sizeof(*led), GFP_KERNEL); 572 if (!led) 573 break; 574 575 led->cdev.name = lubbock_leds[i].name; 576 led->cdev.brightness_set = lubbock_led_set; 577 led->cdev.brightness_get = lubbock_led_get; 578 led->cdev.default_trigger = lubbock_leds[i].trigger; 579 led->mask = BIT(i); 580 581 if (led_classdev_register(NULL, &led->cdev) < 0) { 582 kfree(led); 583 break; 584 } 585 } 586 587 return 0; 588} 589 590/* 591 * Since we may have triggers on any subsystem, defer registration 592 * until after subsystem_init. 593 */ 594fs_initcall(lubbock_leds_init); 595#endif 596 597MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)") 598 /* Maintainer: MontaVista Software Inc. */ 599 .map_io = lubbock_map_io, 600 .nr_irqs = LUBBOCK_NR_IRQS, 601 .init_irq = pxa25x_init_irq, 602 .handle_irq = pxa25x_handle_irq, 603 .init_time = pxa_timer_init, 604 .init_machine = lubbock_init, 605 .restart = pxa_restart, 606MACHINE_END 607