1/* 2 * linux/arch/arm/mach-omap2/board-n8x0.c 3 * 4 * Copyright (C) 2005-2009 Nokia Corporation 5 * Author: Juha Yrjola <juha.yrjola@nokia.com> 6 * 7 * Modified from mach-omap2/board-generic.c 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14#include <linux/clk.h> 15#include <linux/delay.h> 16#include <linux/gpio.h> 17#include <linux/init.h> 18#include <linux/io.h> 19#include <linux/stddef.h> 20#include <linux/i2c.h> 21#include <linux/spi/spi.h> 22#include <linux/usb/musb.h> 23 24#include <asm/mach/arch.h> 25#include <asm/mach-types.h> 26 27#include <plat/board.h> 28#include <plat/common.h> 29#include <plat/menelaus.h> 30#include <mach/irqs.h> 31#include <plat/mcspi.h> 32#include <plat/onenand.h> 33#include <plat/mmc.h> 34#include <plat/serial.h> 35 36#include "mux.h" 37 38static int slot1_cover_open; 39static int slot2_cover_open; 40static struct device *mmc_device; 41 42#define TUSB6010_ASYNC_CS 1 43#define TUSB6010_SYNC_CS 4 44#define TUSB6010_GPIO_INT 58 45#define TUSB6010_GPIO_ENABLE 0 46#define TUSB6010_DMACHAN 0x3f 47 48#if defined(CONFIG_USB_TUSB6010) || defined(CONFIG_USB_TUSB6010_MODULE) 49/* 50 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and 51 * 1.5 V voltage regulators of PM companion chip. Companion chip will then 52 * provide then PGOOD signal to TUSB6010 which will release it from reset. 53 */ 54static int tusb_set_power(int state) 55{ 56 int i, retval = 0; 57 58 if (state) { 59 gpio_set_value(TUSB6010_GPIO_ENABLE, 1); 60 msleep(1); 61 62 /* Wait until TUSB6010 pulls INT pin down */ 63 i = 100; 64 while (i && gpio_get_value(TUSB6010_GPIO_INT)) { 65 msleep(1); 66 i--; 67 } 68 69 if (!i) { 70 printk(KERN_ERR "tusb: powerup failed\n"); 71 retval = -ENODEV; 72 } 73 } else { 74 gpio_set_value(TUSB6010_GPIO_ENABLE, 0); 75 msleep(10); 76 } 77 78 return retval; 79} 80 81static struct musb_hdrc_config musb_config = { 82 .multipoint = 1, 83 .dyn_fifo = 1, 84 .num_eps = 16, 85 .ram_bits = 12, 86}; 87 88static struct musb_hdrc_platform_data tusb_data = { 89#if defined(CONFIG_USB_MUSB_OTG) 90 .mode = MUSB_OTG, 91#elif defined(CONFIG_USB_MUSB_PERIPHERAL) 92 .mode = MUSB_PERIPHERAL, 93#else /* defined(CONFIG_USB_MUSB_HOST) */ 94 .mode = MUSB_HOST, 95#endif 96 .set_power = tusb_set_power, 97 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */ 98 .power = 100, /* Max 100 mA VBUS for host mode */ 99 .config = &musb_config, 100}; 101 102static void __init n8x0_usb_init(void) 103{ 104 int ret = 0; 105 static char announce[] __initdata = KERN_INFO "TUSB 6010\n"; 106 107 /* PM companion chip power control pin */ 108 ret = gpio_request(TUSB6010_GPIO_ENABLE, "TUSB6010 enable"); 109 if (ret != 0) { 110 printk(KERN_ERR "Could not get TUSB power GPIO%i\n", 111 TUSB6010_GPIO_ENABLE); 112 return; 113 } 114 gpio_direction_output(TUSB6010_GPIO_ENABLE, 0); 115 116 tusb_set_power(0); 117 118 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2, 119 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, 120 TUSB6010_GPIO_INT, TUSB6010_DMACHAN); 121 if (ret != 0) 122 goto err; 123 124 printk(announce); 125 126 return; 127 128err: 129 gpio_free(TUSB6010_GPIO_ENABLE); 130} 131#else 132 133static void __init n8x0_usb_init(void) {} 134 135#endif /*CONFIG_USB_TUSB6010 */ 136 137 138static struct omap2_mcspi_device_config p54spi_mcspi_config = { 139 .turbo_mode = 0, 140 .single_channel = 1, 141}; 142 143static struct spi_board_info n800_spi_board_info[] __initdata = { 144 { 145 .modalias = "p54spi", 146 .bus_num = 2, 147 .chip_select = 0, 148 .max_speed_hz = 48000000, 149 .controller_data = &p54spi_mcspi_config, 150 }, 151}; 152 153#if defined(CONFIG_MTD_ONENAND_OMAP2) || defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) 154 155static struct mtd_partition onenand_partitions[] = { 156 { 157 .name = "bootloader", 158 .offset = 0, 159 .size = 0x20000, 160 .mask_flags = MTD_WRITEABLE, /* Force read-only */ 161 }, 162 { 163 .name = "config", 164 .offset = MTDPART_OFS_APPEND, 165 .size = 0x60000, 166 }, 167 { 168 .name = "kernel", 169 .offset = MTDPART_OFS_APPEND, 170 .size = 0x200000, 171 }, 172 { 173 .name = "initfs", 174 .offset = MTDPART_OFS_APPEND, 175 .size = 0x400000, 176 }, 177 { 178 .name = "rootfs", 179 .offset = MTDPART_OFS_APPEND, 180 .size = MTDPART_SIZ_FULL, 181 }, 182}; 183 184static struct omap_onenand_platform_data board_onenand_data = { 185 .cs = 0, 186 .gpio_irq = 26, 187 .parts = onenand_partitions, 188 .nr_parts = ARRAY_SIZE(onenand_partitions), 189 .flags = ONENAND_SYNC_READ, 190}; 191 192static void __init n8x0_onenand_init(void) 193{ 194 gpmc_onenand_init(&board_onenand_data); 195} 196 197#else 198 199static void __init n8x0_onenand_init(void) {} 200 201#endif 202 203#if defined(CONFIG_MENELAUS) && (defined(CONFIG_MMC_OMAP) || \ 204 defined(CONFIG_MMC_OMAP_MODULE)) 205 206/* 207 * On both N800 and N810, only the first of the two MMC controllers is in use. 208 * The two MMC slots are multiplexed via Menelaus companion chip over I2C. 209 * On N800, both slots are powered via Menelaus. On N810, only one of the 210 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO. 211 * 212 * VMMC slot 1 on both N800 and N810 213 * VDCDC3_APE and VMCS2_APE slot 2 on N800 214 * GPIO23 and GPIO9 slot 2 EMMC on N810 215 * 216 */ 217#define N8X0_SLOT_SWITCH_GPIO 96 218#define N810_EMMC_VSD_GPIO 23 219#define N810_EMMC_VIO_GPIO 9 220 221static int n8x0_mmc_switch_slot(struct device *dev, int slot) 222{ 223#ifdef CONFIG_MMC_DEBUG 224 dev_dbg(dev, "Choose slot %d\n", slot + 1); 225#endif 226 gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot); 227 return 0; 228} 229 230static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot, 231 int power_on, int vdd) 232{ 233 int mV; 234 235#ifdef CONFIG_MMC_DEBUG 236 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1, 237 power_on ? "on" : "off", vdd); 238#endif 239 if (slot == 0) { 240 if (!power_on) 241 return menelaus_set_vmmc(0); 242 switch (1 << vdd) { 243 case MMC_VDD_33_34: 244 case MMC_VDD_32_33: 245 case MMC_VDD_31_32: 246 mV = 3100; 247 break; 248 case MMC_VDD_30_31: 249 mV = 3000; 250 break; 251 case MMC_VDD_28_29: 252 mV = 2800; 253 break; 254 case MMC_VDD_165_195: 255 mV = 1850; 256 break; 257 default: 258 BUG(); 259 } 260 return menelaus_set_vmmc(mV); 261 } else { 262 if (!power_on) 263 return menelaus_set_vdcdc(3, 0); 264 switch (1 << vdd) { 265 case MMC_VDD_33_34: 266 case MMC_VDD_32_33: 267 mV = 3300; 268 break; 269 case MMC_VDD_30_31: 270 case MMC_VDD_29_30: 271 mV = 3000; 272 break; 273 case MMC_VDD_28_29: 274 case MMC_VDD_27_28: 275 mV = 2800; 276 break; 277 case MMC_VDD_24_25: 278 case MMC_VDD_23_24: 279 mV = 2400; 280 break; 281 case MMC_VDD_22_23: 282 case MMC_VDD_21_22: 283 mV = 2200; 284 break; 285 case MMC_VDD_20_21: 286 mV = 2000; 287 break; 288 case MMC_VDD_165_195: 289 mV = 1800; 290 break; 291 default: 292 BUG(); 293 } 294 return menelaus_set_vdcdc(3, mV); 295 } 296 return 0; 297} 298 299static void n810_set_power_emmc(struct device *dev, 300 int power_on) 301{ 302 dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off"); 303 304 if (power_on) { 305 gpio_set_value(N810_EMMC_VSD_GPIO, 1); 306 msleep(1); 307 gpio_set_value(N810_EMMC_VIO_GPIO, 1); 308 msleep(1); 309 } else { 310 gpio_set_value(N810_EMMC_VIO_GPIO, 0); 311 msleep(50); 312 gpio_set_value(N810_EMMC_VSD_GPIO, 0); 313 msleep(50); 314 } 315} 316 317static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on, 318 int vdd) 319{ 320 if (machine_is_nokia_n800() || slot == 0) 321 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd); 322 323 n810_set_power_emmc(dev, power_on); 324 325 return 0; 326} 327 328static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) 329{ 330 int r; 331 332 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1, 333 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull"); 334 BUG_ON(slot != 0 && slot != 1); 335 slot++; 336 switch (bus_mode) { 337 case MMC_BUSMODE_OPENDRAIN: 338 r = menelaus_set_mmc_opendrain(slot, 1); 339 break; 340 case MMC_BUSMODE_PUSHPULL: 341 r = menelaus_set_mmc_opendrain(slot, 0); 342 break; 343 default: 344 BUG(); 345 } 346 if (r != 0 && printk_ratelimit()) 347 dev_err(dev, "MMC: unable to set bus mode for slot %d\n", 348 slot); 349 return r; 350} 351 352static int n8x0_mmc_get_cover_state(struct device *dev, int slot) 353{ 354 slot++; 355 BUG_ON(slot != 1 && slot != 2); 356 if (slot == 1) 357 return slot1_cover_open; 358 else 359 return slot2_cover_open; 360} 361 362static void n8x0_mmc_callback(void *data, u8 card_mask) 363{ 364 int bit, *openp, index; 365 366 if (machine_is_nokia_n800()) { 367 bit = 1 << 1; 368 openp = &slot2_cover_open; 369 index = 1; 370 } else { 371 bit = 1; 372 openp = &slot1_cover_open; 373 index = 0; 374 } 375 376 if (card_mask & bit) 377 *openp = 1; 378 else 379 *openp = 0; 380 381 omap_mmc_notify_cover_event(mmc_device, index, *openp); 382} 383 384void n8x0_mmc_slot1_cover_handler(void *arg, int closed_state) 385{ 386 if (mmc_device == NULL) 387 return; 388 389 slot1_cover_open = !closed_state; 390 omap_mmc_notify_cover_event(mmc_device, 0, closed_state); 391} 392 393static int n8x0_mmc_late_init(struct device *dev) 394{ 395 int r, bit, *openp; 396 int vs2sel; 397 398 mmc_device = dev; 399 400 r = menelaus_set_slot_sel(1); 401 if (r < 0) 402 return r; 403 404 if (machine_is_nokia_n800()) 405 vs2sel = 0; 406 else 407 vs2sel = 2; 408 409 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1); 410 if (r < 0) 411 return r; 412 413 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */ 414 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16); 415 416 r = menelaus_set_mmc_slot(1, 1, 0, 1); 417 if (r < 0) 418 return r; 419 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1); 420 if (r < 0) 421 return r; 422 423 r = menelaus_get_slot_pin_states(); 424 if (r < 0) 425 return r; 426 427 if (machine_is_nokia_n800()) { 428 bit = 1 << 1; 429 openp = &slot2_cover_open; 430 } else { 431 bit = 1; 432 openp = &slot1_cover_open; 433 slot2_cover_open = 0; 434 } 435 436 /* All slot pin bits seem to be inversed until first switch change */ 437 if (r == 0xf || r == (0xf & ~bit)) 438 r = ~r; 439 440 if (r & bit) 441 *openp = 1; 442 else 443 *openp = 0; 444 445 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL); 446 447 return r; 448} 449 450static void n8x0_mmc_shutdown(struct device *dev) 451{ 452 int vs2sel; 453 454 if (machine_is_nokia_n800()) 455 vs2sel = 0; 456 else 457 vs2sel = 2; 458 459 menelaus_set_mmc_slot(1, 0, 0, 0); 460 menelaus_set_mmc_slot(2, 0, vs2sel, 0); 461} 462 463static void n8x0_mmc_cleanup(struct device *dev) 464{ 465 menelaus_unregister_mmc_callback(); 466 467 gpio_free(N8X0_SLOT_SWITCH_GPIO); 468 469 if (machine_is_nokia_n810()) { 470 gpio_free(N810_EMMC_VSD_GPIO); 471 gpio_free(N810_EMMC_VIO_GPIO); 472 } 473} 474 475/* 476 * MMC controller1 has two slots that are multiplexed via I2C. 477 * MMC controller2 is not in use. 478 */ 479static struct omap_mmc_platform_data mmc1_data = { 480 .nr_slots = 2, 481 .switch_slot = n8x0_mmc_switch_slot, 482 .init = n8x0_mmc_late_init, 483 .cleanup = n8x0_mmc_cleanup, 484 .shutdown = n8x0_mmc_shutdown, 485 .max_freq = 24000000, 486 .dma_mask = 0xffffffff, 487 .slots[0] = { 488 .wires = 4, 489 .set_power = n8x0_mmc_set_power, 490 .set_bus_mode = n8x0_mmc_set_bus_mode, 491 .get_cover_state = n8x0_mmc_get_cover_state, 492 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 | 493 MMC_VDD_32_33 | MMC_VDD_33_34, 494 .name = "internal", 495 }, 496 .slots[1] = { 497 .set_power = n8x0_mmc_set_power, 498 .set_bus_mode = n8x0_mmc_set_bus_mode, 499 .get_cover_state = n8x0_mmc_get_cover_state, 500 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 | 501 MMC_VDD_21_22 | MMC_VDD_22_23 | 502 MMC_VDD_23_24 | MMC_VDD_24_25 | 503 MMC_VDD_27_28 | MMC_VDD_28_29 | 504 MMC_VDD_29_30 | MMC_VDD_30_31 | 505 MMC_VDD_32_33 | MMC_VDD_33_34, 506 .name = "external", 507 }, 508}; 509 510static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC]; 511 512void __init n8x0_mmc_init(void) 513 514{ 515 int err; 516 517 if (machine_is_nokia_n810()) { 518 mmc1_data.slots[0].name = "external"; 519 520 /* 521 * Some Samsung Movinand chips do not like open-ended 522 * multi-block reads and fall to braind-dead state 523 * while doing so. Reducing the number of blocks in 524 * the transfer or delays in clock disable do not help 525 */ 526 mmc1_data.slots[1].name = "internal"; 527 mmc1_data.slots[1].ban_openended = 1; 528 } 529 530 err = gpio_request(N8X0_SLOT_SWITCH_GPIO, "MMC slot switch"); 531 if (err) 532 return; 533 534 gpio_direction_output(N8X0_SLOT_SWITCH_GPIO, 0); 535 536 if (machine_is_nokia_n810()) { 537 err = gpio_request(N810_EMMC_VSD_GPIO, "MMC slot 2 Vddf"); 538 if (err) { 539 gpio_free(N8X0_SLOT_SWITCH_GPIO); 540 return; 541 } 542 gpio_direction_output(N810_EMMC_VSD_GPIO, 0); 543 544 err = gpio_request(N810_EMMC_VIO_GPIO, "MMC slot 2 Vdd"); 545 if (err) { 546 gpio_free(N8X0_SLOT_SWITCH_GPIO); 547 gpio_free(N810_EMMC_VSD_GPIO); 548 return; 549 } 550 gpio_direction_output(N810_EMMC_VIO_GPIO, 0); 551 } 552 553 mmc_data[0] = &mmc1_data; 554 omap2_init_mmc(mmc_data, OMAP24XX_NR_MMC); 555} 556#else 557 558void __init n8x0_mmc_init(void) 559{ 560} 561 562void n8x0_mmc_slot1_cover_handler(void *arg, int state) 563{ 564} 565 566#endif /* CONFIG_MMC_OMAP */ 567 568#ifdef CONFIG_MENELAUS 569 570static int n8x0_auto_sleep_regulators(void) 571{ 572 u32 val; 573 int ret; 574 575 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \ 576 | EN_VAUX_SLEEP | EN_VIO_SLEEP \ 577 | EN_VMEM_SLEEP | EN_DC3_SLEEP \ 578 | EN_VC_SLEEP | EN_DC2_SLEEP; 579 580 ret = menelaus_set_regulator_sleep(1, val); 581 if (ret < 0) { 582 printk(KERN_ERR "Could not set regulators to sleep on " 583 "menelaus: %u\n", ret); 584 return ret; 585 } 586 return 0; 587} 588 589static int n8x0_auto_voltage_scale(void) 590{ 591 int ret; 592 593 ret = menelaus_set_vcore_hw(1400, 1050); 594 if (ret < 0) { 595 printk(KERN_ERR "Could not set VCORE voltage on " 596 "menelaus: %u\n", ret); 597 return ret; 598 } 599 return 0; 600} 601 602static int n8x0_menelaus_late_init(struct device *dev) 603{ 604 int ret; 605 606 ret = n8x0_auto_voltage_scale(); 607 if (ret < 0) 608 return ret; 609 ret = n8x0_auto_sleep_regulators(); 610 if (ret < 0) 611 return ret; 612 return 0; 613} 614 615static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] = { 616 { 617 I2C_BOARD_INFO("menelaus", 0x72), 618 .irq = INT_24XX_SYS_NIRQ, 619 }, 620}; 621 622static struct menelaus_platform_data n8x0_menelaus_platform_data = { 623 .late_init = n8x0_menelaus_late_init, 624}; 625 626static void __init n8x0_menelaus_init(void) 627{ 628 n8x0_i2c_board_info_1[0].platform_data = &n8x0_menelaus_platform_data; 629 omap_register_i2c_bus(1, 400, n8x0_i2c_board_info_1, 630 ARRAY_SIZE(n8x0_i2c_board_info_1)); 631} 632 633#else 634static inline void __init n8x0_menelaus_init(void) 635{ 636} 637#endif 638 639static void __init n8x0_map_io(void) 640{ 641 omap2_set_globals_242x(); 642 omap242x_map_common_io(); 643} 644 645static void __init n8x0_init_irq(void) 646{ 647 omap2_init_common_hw(NULL, NULL); 648 omap_init_irq(); 649 omap_gpio_init(); 650} 651 652#ifdef CONFIG_OMAP_MUX 653static struct omap_board_mux board_mux[] __initdata = { 654 { .reg_offset = OMAP_MUX_TERMINATOR }, 655}; 656#else 657#define board_mux NULL 658#endif 659 660static void __init n8x0_init_machine(void) 661{ 662 omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC); 663 spi_register_board_info(n800_spi_board_info, 664 ARRAY_SIZE(n800_spi_board_info)); 665 666 omap_serial_init(); 667 n8x0_menelaus_init(); 668 n8x0_onenand_init(); 669 n8x0_mmc_init(); 670 n8x0_usb_init(); 671} 672 673MACHINE_START(NOKIA_N800, "Nokia N800") 674 .phys_io = 0x48000000, 675 .io_pg_offst = ((0xfa000000) >> 18) & 0xfffc, 676 .boot_params = 0x80000100, 677 .map_io = n8x0_map_io, 678 .reserve = omap_reserve, 679 .init_irq = n8x0_init_irq, 680 .init_machine = n8x0_init_machine, 681 .timer = &omap_timer, 682MACHINE_END 683 684MACHINE_START(NOKIA_N810, "Nokia N810") 685 .phys_io = 0x48000000, 686 .io_pg_offst = ((0xfa000000) >> 18) & 0xfffc, 687 .boot_params = 0x80000100, 688 .map_io = n8x0_map_io, 689 .reserve = omap_reserve, 690 .init_irq = n8x0_init_irq, 691 .init_machine = n8x0_init_machine, 692 .timer = &omap_timer, 693MACHINE_END 694 695MACHINE_START(NOKIA_N810_WIMAX, "Nokia N810 WiMAX") 696 .phys_io = 0x48000000, 697 .io_pg_offst = ((0xfa000000) >> 18) & 0xfffc, 698 .boot_params = 0x80000100, 699 .map_io = n8x0_map_io, 700 .reserve = omap_reserve, 701 .init_irq = n8x0_init_irq, 702 .init_machine = n8x0_init_machine, 703 .timer = &omap_timer, 704MACHINE_END 705