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