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