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 static int slot1_cover_open; 37 static int slot2_cover_open; 38 static struct device *mmc_device; 39 40 #define TUSB6010_ASYNC_CS 1 41 #define TUSB6010_SYNC_CS 4 42 #define TUSB6010_GPIO_INT 58 43 #define TUSB6010_GPIO_ENABLE 0 44 #define TUSB6010_DMACHAN 0x3f 45 46 #if defined(CONFIG_USB_TUSB6010) || \ 47 defined(CONFIG_USB_TUSB6010_MODULE) 48 /* 49 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and 50 * 1.5 V voltage regulators of PM companion chip. Companion chip will then 51 * provide then PGOOD signal to TUSB6010 which will release it from reset. 52 */ 53 static int tusb_set_power(int state) 54 { 55 int i, retval = 0; 56 57 if (state) { 58 gpio_set_value(TUSB6010_GPIO_ENABLE, 1); 59 msleep(1); 60 61 /* Wait until TUSB6010 pulls INT pin down */ 62 i = 100; 63 while (i && gpio_get_value(TUSB6010_GPIO_INT)) { 64 msleep(1); 65 i--; 66 } 67 68 if (!i) { 69 printk(KERN_ERR "tusb: powerup failed\n"); 70 retval = -ENODEV; 71 } 72 } else { 73 gpio_set_value(TUSB6010_GPIO_ENABLE, 0); 74 msleep(10); 75 } 76 77 return retval; 78 } 79 80 static struct musb_hdrc_config musb_config = { 81 .multipoint = 1, 82 .dyn_fifo = 1, 83 .num_eps = 16, 84 .ram_bits = 12, 85 }; 86 87 static struct musb_hdrc_platform_data tusb_data = { 88 #if defined(CONFIG_USB_MUSB_OTG) 89 .mode = MUSB_OTG, 90 #elif defined(CONFIG_USB_MUSB_PERIPHERAL) 91 .mode = MUSB_PERIPHERAL, 92 #else /* defined(CONFIG_USB_MUSB_HOST) */ 93 .mode = MUSB_HOST, 94 #endif 95 .set_power = tusb_set_power, 96 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */ 97 .power = 100, /* Max 100 mA VBUS for host mode */ 98 .config = &musb_config, 99 }; 100 101 static void __init n8x0_usb_init(void) 102 { 103 int ret = 0; 104 static char announce[] __initdata = KERN_INFO "TUSB 6010\n"; 105 106 /* PM companion chip power control pin */ 107 ret = gpio_request(TUSB6010_GPIO_ENABLE, "TUSB6010 enable"); 108 if (ret != 0) { 109 printk(KERN_ERR "Could not get TUSB power GPIO%i\n", 110 TUSB6010_GPIO_ENABLE); 111 return; 112 } 113 gpio_direction_output(TUSB6010_GPIO_ENABLE, 0); 114 115 tusb_set_power(0); 116 117 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2, 118 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, 119 TUSB6010_GPIO_INT, TUSB6010_DMACHAN); 120 if (ret != 0) 121 goto err; 122 123 printk(announce); 124 125 return; 126 127 err: 128 gpio_free(TUSB6010_GPIO_ENABLE); 129 } 130 #else 131 132 static void __init n8x0_usb_init(void) {} 133 134 #endif /*CONFIG_USB_TUSB6010 */ 135 136 137 static struct omap2_mcspi_device_config p54spi_mcspi_config = { 138 .turbo_mode = 0, 139 .single_channel = 1, 140 }; 141 142 static struct spi_board_info n800_spi_board_info[] __initdata = { 143 { 144 .modalias = "p54spi", 145 .bus_num = 2, 146 .chip_select = 0, 147 .max_speed_hz = 48000000, 148 .controller_data = &p54spi_mcspi_config, 149 }, 150 }; 151 152 #if defined(CONFIG_MTD_ONENAND_OMAP2) || \ 153 defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) 154 155 static 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 }; 183 184 static 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 }; 191 192 static void __init n8x0_onenand_init(void) 193 { 194 gpmc_onenand_init(&board_onenand_data); 195 } 196 197 #else 198 199 static void __init n8x0_onenand_init(void) {} 200 201 #endif 202 203 #if defined(CONFIG_MENELAUS) && \ 204 (defined(CONFIG_MMC_OMAP) || 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 9 220 221 static 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 } 229 230 static 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 } 298 299 static 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 } 316 317 static 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 } 327 328 static 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 } 351 352 static 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 } 361 362 static 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 } 383 384 void 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 } 392 393 static 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 } 449 450 static 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 } 462 463 static 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 */ 479 static 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 }; 509 510 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC]; 511 512 void __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 557 558 void __init n8x0_mmc_init(void) 559 { 560 } 561 562 void n8x0_mmc_slot1_cover_handler(void *arg, int state) 563 { 564 } 565 566 #endif /* CONFIG_MMC_OMAP */ 567 568 #ifdef CONFIG_MENELAUS 569 570 static 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 } 588 589 static 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 } 601 602 static 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 } 614 615 static 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 }; 621 622 static struct menelaus_platform_data n8x0_menelaus_platform_data = { 623 .late_init = n8x0_menelaus_late_init, 624 }; 625 626 static 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 634 static inline void __init n8x0_menelaus_init(void) 635 { 636 } 637 #endif 638 639 static void __init n8x0_map_io(void) 640 { 641 omap2_set_globals_242x(); 642 omap242x_map_common_io(); 643 } 644 645 static 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 static void __init n8x0_init_machine(void) 653 { 654 /* FIXME: add n810 spi devices */ 655 spi_register_board_info(n800_spi_board_info, 656 ARRAY_SIZE(n800_spi_board_info)); 657 658 omap_serial_init(); 659 n8x0_menelaus_init(); 660 n8x0_onenand_init(); 661 n8x0_mmc_init(); 662 n8x0_usb_init(); 663 } 664 665 MACHINE_START(NOKIA_N800, "Nokia N800") 666 .phys_io = 0x48000000, 667 .io_pg_offst = ((0xfa000000) >> 18) & 0xfffc, 668 .boot_params = 0x80000100, 669 .map_io = n8x0_map_io, 670 .init_irq = n8x0_init_irq, 671 .init_machine = n8x0_init_machine, 672 .timer = &omap_timer, 673 MACHINE_END 674 675 MACHINE_START(NOKIA_N810, "Nokia N810") 676 .phys_io = 0x48000000, 677 .io_pg_offst = ((0xfa000000) >> 18) & 0xfffc, 678 .boot_params = 0x80000100, 679 .map_io = n8x0_map_io, 680 .init_irq = n8x0_init_irq, 681 .init_machine = n8x0_init_machine, 682 .timer = &omap_timer, 683 MACHINE_END 684 685 MACHINE_START(NOKIA_N810_WIMAX, "Nokia N810 WiMAX") 686 .phys_io = 0x48000000, 687 .io_pg_offst = ((0xfa000000) >> 18) & 0xfffc, 688 .boot_params = 0x80000100, 689 .map_io = n8x0_map_io, 690 .init_irq = n8x0_init_irq, 691 .init_machine = n8x0_init_machine, 692 .timer = &omap_timer, 693 MACHINE_END 694