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 25#include <linux/spi/spi.h> 26#include <linux/spi/ads7846.h> 27#include <asm/arch/pxa2xx_spi.h> 28 29#include <asm/setup.h> 30#include <asm/memory.h> 31#include <asm/mach-types.h> 32#include <asm/hardware.h> 33#include <asm/irq.h> 34#include <asm/sizes.h> 35 36#include <asm/mach/arch.h> 37#include <asm/mach/map.h> 38#include <asm/mach/irq.h> 39#include <asm/mach/flash.h> 40 41#include <asm/hardware/sa1111.h> 42 43#include <asm/arch/pxa-regs.h> 44#include <asm/arch/lubbock.h> 45#include <asm/arch/udc.h> 46#include <asm/arch/irda.h> 47#include <asm/arch/pxafb.h> 48#include <asm/arch/mmc.h> 49 50#include "generic.h" 51 52 53#define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080) 54 55void lubbock_set_misc_wr(unsigned int mask, unsigned int set) 56{ 57 unsigned long flags; 58 59 local_irq_save(flags); 60 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask); 61 local_irq_restore(flags); 62} 63EXPORT_SYMBOL(lubbock_set_misc_wr); 64 65static unsigned long lubbock_irq_enabled; 66 67static void lubbock_mask_irq(unsigned int irq) 68{ 69 int lubbock_irq = (irq - LUBBOCK_IRQ(0)); 70 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq)); 71} 72 73static void lubbock_unmask_irq(unsigned int irq) 74{ 75 int lubbock_irq = (irq - LUBBOCK_IRQ(0)); 76 /* the irq can be acknowledged only if deasserted, so it's done here */ 77 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq); 78 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq)); 79} 80 81static struct irq_chip lubbock_irq_chip = { 82 .name = "FPGA", 83 .ack = lubbock_mask_irq, 84 .mask = lubbock_mask_irq, 85 .unmask = lubbock_unmask_irq, 86}; 87 88static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc) 89{ 90 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; 91 do { 92 GEDR(0) = GPIO_bit(0); /* clear our parent irq */ 93 if (likely(pending)) { 94 irq = LUBBOCK_IRQ(0) + __ffs(pending); 95 desc = irq_desc + irq; 96 desc_handle_irq(irq, desc); 97 } 98 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; 99 } while (pending); 100} 101 102static void __init lubbock_init_irq(void) 103{ 104 int irq; 105 106 pxa_init_irq(); 107 108 /* setup extra lubbock irqs */ 109 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) { 110 set_irq_chip(irq, &lubbock_irq_chip); 111 set_irq_handler(irq, handle_level_irq); 112 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); 113 } 114 115 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler); 116 set_irq_type(IRQ_GPIO(0), IRQT_FALLING); 117} 118 119#ifdef CONFIG_PM 120 121static int lubbock_irq_resume(struct sys_device *dev) 122{ 123 LUB_IRQ_MASK_EN = lubbock_irq_enabled; 124 return 0; 125} 126 127static struct sysdev_class lubbock_irq_sysclass = { 128 set_kset_name("cpld_irq"), 129 .resume = lubbock_irq_resume, 130}; 131 132static struct sys_device lubbock_irq_device = { 133 .cls = &lubbock_irq_sysclass, 134}; 135 136static int __init lubbock_irq_device_init(void) 137{ 138 int ret = sysdev_class_register(&lubbock_irq_sysclass); 139 if (ret == 0) 140 ret = sysdev_register(&lubbock_irq_device); 141 return ret; 142} 143 144device_initcall(lubbock_irq_device_init); 145 146#endif 147 148static int lubbock_udc_is_connected(void) 149{ 150 return (LUB_MISC_RD & (1 << 9)) == 0; 151} 152 153static struct pxa2xx_udc_mach_info udc_info __initdata = { 154 .udc_is_connected = lubbock_udc_is_connected, 155 // no D+ pullup; lubbock can't connect/disconnect in software 156}; 157 158static struct platform_device lub_audio_device = { 159 .name = "pxa2xx-ac97", 160 .id = -1, 161}; 162 163static struct resource sa1111_resources[] = { 164 [0] = { 165 .start = 0x10000000, 166 .end = 0x10001fff, 167 .flags = IORESOURCE_MEM, 168 }, 169 [1] = { 170 .start = LUBBOCK_SA1111_IRQ, 171 .end = LUBBOCK_SA1111_IRQ, 172 .flags = IORESOURCE_IRQ, 173 }, 174}; 175 176static struct platform_device sa1111_device = { 177 .name = "sa1111", 178 .id = -1, 179 .num_resources = ARRAY_SIZE(sa1111_resources), 180 .resource = sa1111_resources, 181}; 182 183static struct resource smc91x_resources[] = { 184 [0] = { 185 .name = "smc91x-regs", 186 .start = 0x0c000c00, 187 .end = 0x0c0fffff, 188 .flags = IORESOURCE_MEM, 189 }, 190 [1] = { 191 .start = LUBBOCK_ETH_IRQ, 192 .end = LUBBOCK_ETH_IRQ, 193 .flags = IORESOURCE_IRQ, 194 }, 195 [2] = { 196 .name = "smc91x-attrib", 197 .start = 0x0e000000, 198 .end = 0x0e0fffff, 199 .flags = IORESOURCE_MEM, 200 }, 201}; 202 203/* ADS7846 is connected through SSP ... and if your board has J5 populated, 204 * you can select it to replace the ucb1400 by switching the touchscreen cable 205 * (to J5) and poking board registers (as done below). Else it's only useful 206 * for the temperature sensors. 207 */ 208static struct resource pxa_ssp_resources[] = { 209 [0] = { 210 .start = __PREG(SSCR0_P(1)), 211 .end = __PREG(SSCR0_P(1)) + 0x14, 212 .flags = IORESOURCE_MEM, 213 }, 214 [1] = { 215 .start = IRQ_SSP, 216 .end = IRQ_SSP, 217 .flags = IORESOURCE_IRQ, 218 }, 219}; 220 221static struct pxa2xx_spi_master pxa_ssp_master_info = { 222 .ssp_type = PXA25x_SSP, 223 .clock_enable = CKEN_SSP, 224 .num_chipselect = 0, 225}; 226 227static struct platform_device pxa_ssp = { 228 .name = "pxa2xx-spi", 229 .id = 1, 230 .resource = pxa_ssp_resources, 231 .num_resources = ARRAY_SIZE(pxa_ssp_resources), 232 .dev = { 233 .platform_data = &pxa_ssp_master_info, 234 }, 235}; 236 237static int lubbock_ads7846_pendown_state(void) 238{ 239 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */ 240 return 0; 241} 242 243static struct ads7846_platform_data ads_info = { 244 .model = 7846, 245 .vref_delay_usecs = 100, /* internal, no cap */ 246 .get_pendown_state = lubbock_ads7846_pendown_state, 247 // .x_plate_ohms = 500, /* GUESS! */ 248 // .y_plate_ohms = 500, /* GUESS! */ 249}; 250 251static void ads7846_cs(u32 command) 252{ 253 static const unsigned TS_nCS = 1 << 11; 254 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS); 255} 256 257static struct pxa2xx_spi_chip ads_hw = { 258 .tx_threshold = 1, 259 .rx_threshold = 2, 260 .cs_control = ads7846_cs, 261}; 262 263static struct spi_board_info spi_board_info[] __initdata = { { 264 .modalias = "ads7846", 265 .platform_data = &ads_info, 266 .controller_data = &ads_hw, 267 .irq = LUBBOCK_BB_IRQ, 268 .max_speed_hz = 120000 /* max sample rate at 3V */ 269 * 26 /* command + data + overhead */, 270 .bus_num = 1, 271 .chip_select = 0, 272}, 273}; 274 275static struct platform_device smc91x_device = { 276 .name = "smc91x", 277 .id = -1, 278 .num_resources = ARRAY_SIZE(smc91x_resources), 279 .resource = smc91x_resources, 280}; 281 282static struct resource flash_resources[] = { 283 [0] = { 284 .start = 0x00000000, 285 .end = SZ_64M - 1, 286 .flags = IORESOURCE_MEM, 287 }, 288 [1] = { 289 .start = 0x04000000, 290 .end = 0x04000000 + SZ_64M - 1, 291 .flags = IORESOURCE_MEM, 292 }, 293}; 294 295static struct mtd_partition lubbock_partitions[] = { 296 { 297 .name = "Bootloader", 298 .size = 0x00040000, 299 .offset = 0, 300 .mask_flags = MTD_WRITEABLE /* force read-only */ 301 },{ 302 .name = "Kernel", 303 .size = 0x00100000, 304 .offset = 0x00040000, 305 },{ 306 .name = "Filesystem", 307 .size = MTDPART_SIZ_FULL, 308 .offset = 0x00140000 309 } 310}; 311 312static struct flash_platform_data lubbock_flash_data[2] = { 313 { 314 .map_name = "cfi_probe", 315 .parts = lubbock_partitions, 316 .nr_parts = ARRAY_SIZE(lubbock_partitions), 317 }, { 318 .map_name = "cfi_probe", 319 .parts = NULL, 320 .nr_parts = 0, 321 } 322}; 323 324static struct platform_device lubbock_flash_device[2] = { 325 { 326 .name = "pxa2xx-flash", 327 .id = 0, 328 .dev = { 329 .platform_data = &lubbock_flash_data[0], 330 }, 331 .resource = &flash_resources[0], 332 .num_resources = 1, 333 }, 334 { 335 .name = "pxa2xx-flash", 336 .id = 1, 337 .dev = { 338 .platform_data = &lubbock_flash_data[1], 339 }, 340 .resource = &flash_resources[1], 341 .num_resources = 1, 342 }, 343}; 344 345static struct platform_device *devices[] __initdata = { 346 &sa1111_device, 347 &lub_audio_device, 348 &smc91x_device, 349 &lubbock_flash_device[0], 350 &lubbock_flash_device[1], 351 &pxa_ssp, 352}; 353 354static struct pxafb_mode_info sharp_lm8v31_mode = { 355 .pixclock = 270000, 356 .xres = 640, 357 .yres = 480, 358 .bpp = 16, 359 .hsync_len = 1, 360 .left_margin = 3, 361 .right_margin = 3, 362 .vsync_len = 1, 363 .upper_margin = 0, 364 .lower_margin = 0, 365 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 366 .cmap_greyscale = 0, 367}; 368 369static struct pxafb_mach_info sharp_lm8v31 = { 370 .modes = &sharp_lm8v31_mode, 371 .num_modes = 1, 372 .cmap_inverse = 0, 373 .cmap_static = 0, 374 .lccr0 = LCCR0_SDS, 375 .lccr3 = LCCR3_PCP | LCCR3_Acb(255), 376}; 377 378#define MMC_POLL_RATE msecs_to_jiffies(1000) 379 380static void lubbock_mmc_poll(unsigned long); 381static irq_handler_t mmc_detect_int; 382 383static struct timer_list mmc_timer = { 384 .function = lubbock_mmc_poll, 385}; 386 387static void lubbock_mmc_poll(unsigned long data) 388{ 389 unsigned long flags; 390 391 /* clear any previous irq state, then ... */ 392 local_irq_save(flags); 393 LUB_IRQ_SET_CLR &= ~(1 << 0); 394 local_irq_restore(flags); 395 396 /* poll until mmc/sd card is removed */ 397 if (LUB_IRQ_SET_CLR & (1 << 0)) 398 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE); 399 else { 400 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data); 401 enable_irq(LUBBOCK_SD_IRQ); 402 } 403} 404 405static irqreturn_t lubbock_detect_int(int irq, void *data) 406{ 407 /* IRQ is level triggered; disable, and poll for removal */ 408 disable_irq(irq); 409 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE); 410 411 return mmc_detect_int(irq, data); 412} 413 414static int lubbock_mci_init(struct device *dev, 415 irq_handler_t detect_int, 416 void *data) 417{ 418 /* setup GPIO for PXA25x MMC controller */ 419 pxa_gpio_mode(GPIO6_MMCCLK_MD); 420 pxa_gpio_mode(GPIO8_MMCCS0_MD); 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 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data); 428} 429 430static int lubbock_mci_get_ro(struct device *dev) 431{ 432 return (LUB_MISC_RD & (1 << 2)) != 0; 433} 434 435static 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 441static struct pxamci_platform_data lubbock_mci_platform_data = { 442 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, 443 .detect_delay = 1, 444 .init = lubbock_mci_init, 445 .get_ro = lubbock_mci_get_ro, 446 .exit = lubbock_mci_exit, 447}; 448 449static void lubbock_irda_transceiver_mode(struct device *dev, int mode) 450{ 451 unsigned long flags; 452 453 local_irq_save(flags); 454 if (mode & IR_SIRMODE) { 455 LUB_MISC_WR &= ~(1 << 4); 456 } else if (mode & IR_FIRMODE) { 457 LUB_MISC_WR |= 1 << 4; 458 } 459 local_irq_restore(flags); 460} 461 462static struct pxaficp_platform_data lubbock_ficp_platform_data = { 463 .transceiver_cap = IR_SIRMODE | IR_FIRMODE, 464 .transceiver_mode = lubbock_irda_transceiver_mode, 465}; 466 467static void __init lubbock_init(void) 468{ 469 int flashboot = (LUB_CONF_SWITCHES & 1); 470 471 pxa_set_udc_info(&udc_info); 472 set_pxa_fb_info(&sharp_lm8v31); 473 pxa_set_mci_info(&lubbock_mci_platform_data); 474 pxa_set_ficp_info(&lubbock_ficp_platform_data); 475 476 lubbock_flash_data[0].width = lubbock_flash_data[1].width = 477 (BOOT_DEF & 1) ? 2 : 4; 478 /* Compensate for the nROMBT switch which swaps the flash banks */ 479 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n", 480 flashboot?"Flash":"ROM", flashboot); 481 482 lubbock_flash_data[flashboot^1].name = "application-flash"; 483 lubbock_flash_data[flashboot].name = "boot-rom"; 484 (void) platform_add_devices(devices, ARRAY_SIZE(devices)); 485 486 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); 487} 488 489static struct map_desc lubbock_io_desc[] __initdata = { 490 { /* CPLD */ 491 .virtual = LUBBOCK_FPGA_VIRT, 492 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS), 493 .length = 0x00100000, 494 .type = MT_DEVICE 495 } 496}; 497 498static void __init lubbock_map_io(void) 499{ 500 pxa_map_io(); 501 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); 502 503 /* SSP data pins */ 504 pxa_gpio_mode(GPIO23_SCLK_MD); 505 pxa_gpio_mode(GPIO25_STXD_MD); 506 pxa_gpio_mode(GPIO26_SRXD_MD); 507 508 /* This enables the BTUART */ 509 pxa_gpio_mode(GPIO42_BTRXD_MD); 510 pxa_gpio_mode(GPIO43_BTTXD_MD); 511 pxa_gpio_mode(GPIO44_BTCTS_MD); 512 pxa_gpio_mode(GPIO45_BTRTS_MD); 513 514 /* This is for the SMC chip select */ 515 pxa_gpio_mode(GPIO79_nCS_3_MD); 516 517 /* setup sleep mode values */ 518 PWER = 0x00000002; 519 PFER = 0x00000000; 520 PRER = 0x00000002; 521 PGSR0 = 0x00008000; 522 PGSR1 = 0x003F0202; 523 PGSR2 = 0x0001C000; 524 PCFR |= PCFR_OPDE; 525} 526 527MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)") 528 /* Maintainer: MontaVista Software Inc. */ 529 .phys_io = 0x40000000, 530 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, 531 .map_io = lubbock_map_io, 532 .init_irq = lubbock_init_irq, 533 .timer = &pxa_timer, 534 .init_machine = lubbock_init, 535MACHINE_END 536