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/irq.h> 20 #include <linux/stddef.h> 21 #include <linux/i2c.h> 22 #include <linux/spi/spi.h> 23 #include <linux/usb/musb.h> 24 #include <linux/platform_data/spi-omap2-mcspi.h> 25 #include <linux/platform_data/mtd-onenand-omap2.h> 26 #include <linux/mfd/menelaus.h> 27 #include <sound/tlv320aic3x.h> 28 29 #include <asm/mach/arch.h> 30 #include <asm/mach-types.h> 31 32 #include "common.h" 33 #include "mmc.h" 34 #include "soc.h" 35 #include "gpmc-onenand.h" 36 37 #define TUSB6010_ASYNC_CS 1 38 #define TUSB6010_SYNC_CS 4 39 #define TUSB6010_GPIO_INT 58 40 #define TUSB6010_GPIO_ENABLE 0 41 #define TUSB6010_DMACHAN 0x3f 42 43 #define NOKIA_N810_WIMAX (1 << 2) 44 #define NOKIA_N810 (1 << 1) 45 #define NOKIA_N800 (1 << 0) 46 47 static u32 board_caps; 48 49 #define board_is_n800() (board_caps & NOKIA_N800) 50 #define board_is_n810() (board_caps & NOKIA_N810) 51 #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX) 52 53 static void board_check_revision(void) 54 { 55 if (of_have_populated_dt()) { 56 if (of_machine_is_compatible("nokia,n800")) 57 board_caps = NOKIA_N800; 58 else if (of_machine_is_compatible("nokia,n810")) 59 board_caps = NOKIA_N810; 60 else if (of_machine_is_compatible("nokia,n810-wimax")) 61 board_caps = NOKIA_N810_WIMAX; 62 } 63 64 if (!board_caps) 65 pr_err("Unknown board\n"); 66 } 67 68 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_TUSB6010_MODULE) 69 /* 70 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and 71 * 1.5 V voltage regulators of PM companion chip. Companion chip will then 72 * provide then PGOOD signal to TUSB6010 which will release it from reset. 73 */ 74 static int tusb_set_power(int state) 75 { 76 int i, retval = 0; 77 78 if (state) { 79 gpio_set_value(TUSB6010_GPIO_ENABLE, 1); 80 msleep(1); 81 82 /* Wait until TUSB6010 pulls INT pin down */ 83 i = 100; 84 while (i && gpio_get_value(TUSB6010_GPIO_INT)) { 85 msleep(1); 86 i--; 87 } 88 89 if (!i) { 90 printk(KERN_ERR "tusb: powerup failed\n"); 91 retval = -ENODEV; 92 } 93 } else { 94 gpio_set_value(TUSB6010_GPIO_ENABLE, 0); 95 msleep(10); 96 } 97 98 return retval; 99 } 100 101 static struct musb_hdrc_config musb_config = { 102 .multipoint = 1, 103 .dyn_fifo = 1, 104 .num_eps = 16, 105 .ram_bits = 12, 106 }; 107 108 static struct musb_hdrc_platform_data tusb_data = { 109 .mode = MUSB_OTG, 110 .set_power = tusb_set_power, 111 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */ 112 .power = 100, /* Max 100 mA VBUS for host mode */ 113 .config = &musb_config, 114 }; 115 116 static void __init n8x0_usb_init(void) 117 { 118 int ret = 0; 119 static char announce[] __initdata = KERN_INFO "TUSB 6010\n"; 120 121 /* PM companion chip power control pin */ 122 ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW, 123 "TUSB6010 enable"); 124 if (ret != 0) { 125 printk(KERN_ERR "Could not get TUSB power GPIO%i\n", 126 TUSB6010_GPIO_ENABLE); 127 return; 128 } 129 tusb_set_power(0); 130 131 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2, 132 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, 133 TUSB6010_GPIO_INT, TUSB6010_DMACHAN); 134 if (ret != 0) 135 goto err; 136 137 printk(announce); 138 139 return; 140 141 err: 142 gpio_free(TUSB6010_GPIO_ENABLE); 143 } 144 #else 145 146 static void __init n8x0_usb_init(void) {} 147 148 #endif /*CONFIG_USB_MUSB_TUSB6010 */ 149 150 151 static struct omap2_mcspi_device_config p54spi_mcspi_config = { 152 .turbo_mode = 0, 153 }; 154 155 static struct spi_board_info n800_spi_board_info[] __initdata = { 156 { 157 .modalias = "p54spi", 158 .bus_num = 2, 159 .chip_select = 0, 160 .max_speed_hz = 48000000, 161 .controller_data = &p54spi_mcspi_config, 162 }, 163 }; 164 165 #if defined(CONFIG_MENELAUS) && \ 166 (defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)) 167 168 /* 169 * On both N800 and N810, only the first of the two MMC controllers is in use. 170 * The two MMC slots are multiplexed via Menelaus companion chip over I2C. 171 * On N800, both slots are powered via Menelaus. On N810, only one of the 172 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO. 173 * 174 * VMMC slot 1 on both N800 and N810 175 * VDCDC3_APE and VMCS2_APE slot 2 on N800 176 * GPIO23 and GPIO9 slot 2 EMMC on N810 177 * 178 */ 179 #define N8X0_SLOT_SWITCH_GPIO 96 180 #define N810_EMMC_VSD_GPIO 23 181 #define N810_EMMC_VIO_GPIO 9 182 183 static int slot1_cover_open; 184 static int slot2_cover_open; 185 static struct device *mmc_device; 186 187 static int n8x0_mmc_switch_slot(struct device *dev, int slot) 188 { 189 #ifdef CONFIG_MMC_DEBUG 190 dev_dbg(dev, "Choose slot %d\n", slot + 1); 191 #endif 192 gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot); 193 return 0; 194 } 195 196 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot, 197 int power_on, int vdd) 198 { 199 int mV; 200 201 #ifdef CONFIG_MMC_DEBUG 202 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1, 203 power_on ? "on" : "off", vdd); 204 #endif 205 if (slot == 0) { 206 if (!power_on) 207 return menelaus_set_vmmc(0); 208 switch (1 << vdd) { 209 case MMC_VDD_33_34: 210 case MMC_VDD_32_33: 211 case MMC_VDD_31_32: 212 mV = 3100; 213 break; 214 case MMC_VDD_30_31: 215 mV = 3000; 216 break; 217 case MMC_VDD_28_29: 218 mV = 2800; 219 break; 220 case MMC_VDD_165_195: 221 mV = 1850; 222 break; 223 default: 224 BUG(); 225 } 226 return menelaus_set_vmmc(mV); 227 } else { 228 if (!power_on) 229 return menelaus_set_vdcdc(3, 0); 230 switch (1 << vdd) { 231 case MMC_VDD_33_34: 232 case MMC_VDD_32_33: 233 mV = 3300; 234 break; 235 case MMC_VDD_30_31: 236 case MMC_VDD_29_30: 237 mV = 3000; 238 break; 239 case MMC_VDD_28_29: 240 case MMC_VDD_27_28: 241 mV = 2800; 242 break; 243 case MMC_VDD_24_25: 244 case MMC_VDD_23_24: 245 mV = 2400; 246 break; 247 case MMC_VDD_22_23: 248 case MMC_VDD_21_22: 249 mV = 2200; 250 break; 251 case MMC_VDD_20_21: 252 mV = 2000; 253 break; 254 case MMC_VDD_165_195: 255 mV = 1800; 256 break; 257 default: 258 BUG(); 259 } 260 return menelaus_set_vdcdc(3, mV); 261 } 262 return 0; 263 } 264 265 static void n810_set_power_emmc(struct device *dev, 266 int power_on) 267 { 268 dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off"); 269 270 if (power_on) { 271 gpio_set_value(N810_EMMC_VSD_GPIO, 1); 272 msleep(1); 273 gpio_set_value(N810_EMMC_VIO_GPIO, 1); 274 msleep(1); 275 } else { 276 gpio_set_value(N810_EMMC_VIO_GPIO, 0); 277 msleep(50); 278 gpio_set_value(N810_EMMC_VSD_GPIO, 0); 279 msleep(50); 280 } 281 } 282 283 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on, 284 int vdd) 285 { 286 if (board_is_n800() || slot == 0) 287 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd); 288 289 n810_set_power_emmc(dev, power_on); 290 291 return 0; 292 } 293 294 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) 295 { 296 int r; 297 298 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1, 299 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull"); 300 BUG_ON(slot != 0 && slot != 1); 301 slot++; 302 switch (bus_mode) { 303 case MMC_BUSMODE_OPENDRAIN: 304 r = menelaus_set_mmc_opendrain(slot, 1); 305 break; 306 case MMC_BUSMODE_PUSHPULL: 307 r = menelaus_set_mmc_opendrain(slot, 0); 308 break; 309 default: 310 BUG(); 311 } 312 if (r != 0 && printk_ratelimit()) 313 dev_err(dev, "MMC: unable to set bus mode for slot %d\n", 314 slot); 315 return r; 316 } 317 318 static int n8x0_mmc_get_cover_state(struct device *dev, int slot) 319 { 320 slot++; 321 BUG_ON(slot != 1 && slot != 2); 322 if (slot == 1) 323 return slot1_cover_open; 324 else 325 return slot2_cover_open; 326 } 327 328 static void n8x0_mmc_callback(void *data, u8 card_mask) 329 { 330 int bit, *openp, index; 331 332 if (board_is_n800()) { 333 bit = 1 << 1; 334 openp = &slot2_cover_open; 335 index = 1; 336 } else { 337 bit = 1; 338 openp = &slot1_cover_open; 339 index = 0; 340 } 341 342 if (card_mask & bit) 343 *openp = 1; 344 else 345 *openp = 0; 346 347 #ifdef CONFIG_MMC_OMAP 348 omap_mmc_notify_cover_event(mmc_device, index, *openp); 349 #else 350 pr_warn("MMC: notify cover event not available\n"); 351 #endif 352 } 353 354 static int n8x0_mmc_late_init(struct device *dev) 355 { 356 int r, bit, *openp; 357 int vs2sel; 358 359 mmc_device = dev; 360 361 r = menelaus_set_slot_sel(1); 362 if (r < 0) 363 return r; 364 365 if (board_is_n800()) 366 vs2sel = 0; 367 else 368 vs2sel = 2; 369 370 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1); 371 if (r < 0) 372 return r; 373 374 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */ 375 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16); 376 377 r = menelaus_set_mmc_slot(1, 1, 0, 1); 378 if (r < 0) 379 return r; 380 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1); 381 if (r < 0) 382 return r; 383 384 r = menelaus_get_slot_pin_states(); 385 if (r < 0) 386 return r; 387 388 if (board_is_n800()) { 389 bit = 1 << 1; 390 openp = &slot2_cover_open; 391 } else { 392 bit = 1; 393 openp = &slot1_cover_open; 394 slot2_cover_open = 0; 395 } 396 397 /* All slot pin bits seem to be inversed until first switch change */ 398 if (r == 0xf || r == (0xf & ~bit)) 399 r = ~r; 400 401 if (r & bit) 402 *openp = 1; 403 else 404 *openp = 0; 405 406 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL); 407 408 return r; 409 } 410 411 static void n8x0_mmc_shutdown(struct device *dev) 412 { 413 int vs2sel; 414 415 if (board_is_n800()) 416 vs2sel = 0; 417 else 418 vs2sel = 2; 419 420 menelaus_set_mmc_slot(1, 0, 0, 0); 421 menelaus_set_mmc_slot(2, 0, vs2sel, 0); 422 } 423 424 static void n8x0_mmc_cleanup(struct device *dev) 425 { 426 menelaus_unregister_mmc_callback(); 427 428 gpio_free(N8X0_SLOT_SWITCH_GPIO); 429 430 if (board_is_n810()) { 431 gpio_free(N810_EMMC_VSD_GPIO); 432 gpio_free(N810_EMMC_VIO_GPIO); 433 } 434 } 435 436 /* 437 * MMC controller1 has two slots that are multiplexed via I2C. 438 * MMC controller2 is not in use. 439 */ 440 static struct omap_mmc_platform_data mmc1_data = { 441 .nr_slots = 0, 442 .switch_slot = n8x0_mmc_switch_slot, 443 .init = n8x0_mmc_late_init, 444 .cleanup = n8x0_mmc_cleanup, 445 .shutdown = n8x0_mmc_shutdown, 446 .max_freq = 24000000, 447 .slots[0] = { 448 .wires = 4, 449 .set_power = n8x0_mmc_set_power, 450 .set_bus_mode = n8x0_mmc_set_bus_mode, 451 .get_cover_state = n8x0_mmc_get_cover_state, 452 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 | 453 MMC_VDD_32_33 | MMC_VDD_33_34, 454 .name = "internal", 455 }, 456 .slots[1] = { 457 .set_power = n8x0_mmc_set_power, 458 .set_bus_mode = n8x0_mmc_set_bus_mode, 459 .get_cover_state = n8x0_mmc_get_cover_state, 460 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 | 461 MMC_VDD_21_22 | MMC_VDD_22_23 | 462 MMC_VDD_23_24 | MMC_VDD_24_25 | 463 MMC_VDD_27_28 | MMC_VDD_28_29 | 464 MMC_VDD_29_30 | MMC_VDD_30_31 | 465 MMC_VDD_32_33 | MMC_VDD_33_34, 466 .name = "external", 467 }, 468 }; 469 470 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC]; 471 472 static struct gpio n810_emmc_gpios[] __initdata = { 473 { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" }, 474 { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" }, 475 }; 476 477 static void __init n8x0_mmc_init(void) 478 { 479 int err; 480 481 if (board_is_n810()) { 482 mmc1_data.slots[0].name = "external"; 483 484 /* 485 * Some Samsung Movinand chips do not like open-ended 486 * multi-block reads and fall to braind-dead state 487 * while doing so. Reducing the number of blocks in 488 * the transfer or delays in clock disable do not help 489 */ 490 mmc1_data.slots[1].name = "internal"; 491 mmc1_data.slots[1].ban_openended = 1; 492 } 493 494 err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW, 495 "MMC slot switch"); 496 if (err) 497 return; 498 499 if (board_is_n810()) { 500 err = gpio_request_array(n810_emmc_gpios, 501 ARRAY_SIZE(n810_emmc_gpios)); 502 if (err) { 503 gpio_free(N8X0_SLOT_SWITCH_GPIO); 504 return; 505 } 506 } 507 508 mmc1_data.nr_slots = 2; 509 mmc_data[0] = &mmc1_data; 510 } 511 #else 512 static struct omap_mmc_platform_data mmc1_data; 513 void __init n8x0_mmc_init(void) 514 { 515 } 516 #endif /* CONFIG_MMC_OMAP */ 517 518 #ifdef CONFIG_MENELAUS 519 520 static int n8x0_auto_sleep_regulators(void) 521 { 522 u32 val; 523 int ret; 524 525 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \ 526 | EN_VAUX_SLEEP | EN_VIO_SLEEP \ 527 | EN_VMEM_SLEEP | EN_DC3_SLEEP \ 528 | EN_VC_SLEEP | EN_DC2_SLEEP; 529 530 ret = menelaus_set_regulator_sleep(1, val); 531 if (ret < 0) { 532 pr_err("Could not set regulators to sleep on menelaus: %u\n", 533 ret); 534 return ret; 535 } 536 return 0; 537 } 538 539 static int n8x0_auto_voltage_scale(void) 540 { 541 int ret; 542 543 ret = menelaus_set_vcore_hw(1400, 1050); 544 if (ret < 0) { 545 pr_err("Could not set VCORE voltage on menelaus: %u\n", ret); 546 return ret; 547 } 548 return 0; 549 } 550 551 static int n8x0_menelaus_late_init(struct device *dev) 552 { 553 int ret; 554 555 ret = n8x0_auto_voltage_scale(); 556 if (ret < 0) 557 return ret; 558 ret = n8x0_auto_sleep_regulators(); 559 if (ret < 0) 560 return ret; 561 return 0; 562 } 563 564 #else 565 static int n8x0_menelaus_late_init(struct device *dev) 566 { 567 return 0; 568 } 569 #endif 570 571 static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = { 572 .late_init = n8x0_menelaus_late_init, 573 }; 574 575 static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] __initdata = { 576 { 577 I2C_BOARD_INFO("menelaus", 0x72), 578 .irq = 7 + OMAP_INTC_START, 579 .platform_data = &n8x0_menelaus_platform_data, 580 }, 581 }; 582 583 static struct aic3x_pdata n810_aic33_data __initdata = { 584 .gpio_reset = 118, 585 }; 586 587 static struct i2c_board_info n810_i2c_board_info_2[] __initdata = { 588 { 589 I2C_BOARD_INFO("tlv320aic3x", 0x18), 590 .platform_data = &n810_aic33_data, 591 }, 592 }; 593 594 static int __init n8x0_late_initcall(void) 595 { 596 if (!board_caps) 597 return -ENODEV; 598 599 n8x0_mmc_init(); 600 n8x0_usb_init(); 601 602 return 0; 603 } 604 omap_late_initcall(n8x0_late_initcall); 605 606 /* 607 * Legacy init pdata init for n8x0. Note that we want to follow the 608 * I2C bus numbering starting at 0 for device tree like other omaps. 609 */ 610 void * __init n8x0_legacy_init(void) 611 { 612 board_check_revision(); 613 spi_register_board_info(n800_spi_board_info, 614 ARRAY_SIZE(n800_spi_board_info)); 615 i2c_register_board_info(0, n8x0_i2c_board_info_1, 616 ARRAY_SIZE(n8x0_i2c_board_info_1)); 617 if (board_is_n810()) 618 i2c_register_board_info(1, n810_i2c_board_info_2, 619 ARRAY_SIZE(n810_i2c_board_info_2)); 620 621 return &mmc1_data; 622 } 623