1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/arch/arm/mach-omap2/board-n8x0.c 4 * 5 * Copyright (C) 2005-2009 Nokia Corporation 6 * Author: Juha Yrjola <juha.yrjola@nokia.com> 7 * 8 * Modified from mach-omap2/board-generic.c 9 */ 10 11 #include <linux/clk.h> 12 #include <linux/delay.h> 13 #include <linux/gpio/machine.h> 14 #include <linux/gpio/consumer.h> 15 #include <linux/init.h> 16 #include <linux/io.h> 17 #include <linux/irq.h> 18 #include <linux/stddef.h> 19 #include <linux/i2c.h> 20 #include <linux/spi/spi.h> 21 #include <linux/usb/musb.h> 22 #include <linux/mmc/host.h> 23 #include <linux/platform_data/spi-omap2-mcspi.h> 24 #include <linux/platform_data/mmc-omap.h> 25 #include <linux/mfd/menelaus.h> 26 27 #include <asm/mach/arch.h> 28 #include <asm/mach-types.h> 29 30 #include "common.h" 31 #include "mmc.h" 32 #include "usb-tusb6010.h" 33 #include "soc.h" 34 #include "common-board-devices.h" 35 36 #define TUSB6010_ASYNC_CS 1 37 #define TUSB6010_SYNC_CS 4 38 #define TUSB6010_DMACHAN 0x3f 39 40 #define NOKIA_N810_WIMAX (1 << 2) 41 #define NOKIA_N810 (1 << 1) 42 #define NOKIA_N800 (1 << 0) 43 44 static u32 board_caps; 45 46 #define board_is_n800() (board_caps & NOKIA_N800) 47 #define board_is_n810() (board_caps & NOKIA_N810) 48 #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX) 49 50 static void board_check_revision(void) 51 { 52 if (of_machine_is_compatible("nokia,n800")) 53 board_caps = NOKIA_N800; 54 else if (of_machine_is_compatible("nokia,n810")) 55 board_caps = NOKIA_N810; 56 else if (of_machine_is_compatible("nokia,n810-wimax")) 57 board_caps = NOKIA_N810_WIMAX; 58 59 if (!board_caps) 60 pr_err("Unknown board\n"); 61 } 62 63 #if IS_ENABLED(CONFIG_USB_MUSB_TUSB6010) 64 65 static struct musb_hdrc_config musb_config = { 66 .multipoint = 1, 67 .dyn_fifo = 1, 68 .num_eps = 16, 69 .ram_bits = 12, 70 }; 71 72 static struct musb_hdrc_platform_data tusb_data = { 73 .mode = MUSB_OTG, 74 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */ 75 .power = 100, /* Max 100 mA VBUS for host mode */ 76 .config = &musb_config, 77 }; 78 79 static struct gpiod_lookup_table tusb_gpio_table = { 80 .dev_id = "musb-tusb", 81 .table = { 82 GPIO_LOOKUP("gpio-0-15", 0, "enable", 83 GPIO_ACTIVE_HIGH), 84 GPIO_LOOKUP("gpio-48-63", 10, "int", 85 GPIO_ACTIVE_HIGH), 86 { } 87 }, 88 }; 89 90 static void __init n8x0_usb_init(void) 91 { 92 int ret = 0; 93 94 gpiod_add_lookup_table(&tusb_gpio_table); 95 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2, 96 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, 97 TUSB6010_DMACHAN); 98 if (ret != 0) 99 return; 100 101 pr_info("TUSB 6010\n"); 102 103 return; 104 } 105 #else 106 107 static void __init n8x0_usb_init(void) {} 108 109 #endif /*CONFIG_USB_MUSB_TUSB6010 */ 110 111 112 static struct omap2_mcspi_device_config p54spi_mcspi_config = { 113 .turbo_mode = 0, 114 }; 115 116 static struct spi_board_info n800_spi_board_info[] __initdata = { 117 { 118 .modalias = "p54spi", 119 .bus_num = 2, 120 .chip_select = 0, 121 .max_speed_hz = 48000000, 122 .controller_data = &p54spi_mcspi_config, 123 }, 124 }; 125 126 #if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP) 127 128 /* 129 * On both N800 and N810, only the first of the two MMC controllers is in use. 130 * The two MMC slots are multiplexed via Menelaus companion chip over I2C. 131 * On N800, both slots are powered via Menelaus. On N810, only one of the 132 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO. 133 * 134 * VMMC slot 1 on both N800 and N810 135 * VDCDC3_APE and VMCS2_APE slot 2 on N800 136 * GPIO23 and GPIO9 slot 2 EMMC on N810 137 * 138 */ 139 static int slot1_cover_open; 140 static int slot2_cover_open; 141 static struct device *mmc_device; 142 143 static struct gpiod_lookup_table nokia800_mmc_gpio_table = { 144 .dev_id = "mmci-omap.0", 145 .table = { 146 /* Slot switch, GPIO 96 */ 147 GPIO_LOOKUP("gpio-96-127", 0, "switch", GPIO_ACTIVE_HIGH), 148 { } 149 }, 150 }; 151 152 static struct gpiod_lookup_table nokia810_mmc_gpio_table = { 153 .dev_id = "mmci-omap.0", 154 .table = { 155 /* Slot switch, GPIO 96 */ 156 GPIO_LOOKUP("gpio-96-127", 0, "switch", GPIO_ACTIVE_HIGH), 157 /* Slot index 1, VSD power, GPIO 23 */ 158 GPIO_LOOKUP_IDX("gpio-0-31", 23, "vsd", 1, GPIO_ACTIVE_HIGH), 159 /* Slot index 1, VIO power, GPIO 9 */ 160 GPIO_LOOKUP_IDX("gpio-0-31", 9, "vio", 1, GPIO_ACTIVE_HIGH), 161 { } 162 }, 163 }; 164 165 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot, 166 int power_on, int vdd) 167 { 168 int mV; 169 170 #ifdef CONFIG_MMC_DEBUG 171 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1, 172 power_on ? "on" : "off", vdd); 173 #endif 174 if (slot == 0) { 175 if (!power_on) 176 return menelaus_set_vmmc(0); 177 switch (1 << vdd) { 178 case MMC_VDD_33_34: 179 case MMC_VDD_32_33: 180 case MMC_VDD_31_32: 181 mV = 3100; 182 break; 183 case MMC_VDD_30_31: 184 mV = 3000; 185 break; 186 case MMC_VDD_28_29: 187 mV = 2800; 188 break; 189 case MMC_VDD_165_195: 190 mV = 1850; 191 break; 192 default: 193 BUG(); 194 } 195 return menelaus_set_vmmc(mV); 196 } else { 197 if (!power_on) 198 return menelaus_set_vdcdc(3, 0); 199 switch (1 << vdd) { 200 case MMC_VDD_33_34: 201 case MMC_VDD_32_33: 202 mV = 3300; 203 break; 204 case MMC_VDD_30_31: 205 case MMC_VDD_29_30: 206 mV = 3000; 207 break; 208 case MMC_VDD_28_29: 209 case MMC_VDD_27_28: 210 mV = 2800; 211 break; 212 case MMC_VDD_24_25: 213 case MMC_VDD_23_24: 214 mV = 2400; 215 break; 216 case MMC_VDD_22_23: 217 case MMC_VDD_21_22: 218 mV = 2200; 219 break; 220 case MMC_VDD_20_21: 221 mV = 2000; 222 break; 223 case MMC_VDD_165_195: 224 mV = 1800; 225 break; 226 default: 227 BUG(); 228 } 229 return menelaus_set_vdcdc(3, mV); 230 } 231 return 0; 232 } 233 234 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on, 235 int vdd) 236 { 237 if (board_is_n800() || slot == 0) 238 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd); 239 240 /* The n810 power will be handled by GPIO code in the driver */ 241 242 return 0; 243 } 244 245 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) 246 { 247 int r; 248 249 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1, 250 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull"); 251 BUG_ON(slot != 0 && slot != 1); 252 slot++; 253 switch (bus_mode) { 254 case MMC_BUSMODE_OPENDRAIN: 255 r = menelaus_set_mmc_opendrain(slot, 1); 256 break; 257 case MMC_BUSMODE_PUSHPULL: 258 r = menelaus_set_mmc_opendrain(slot, 0); 259 break; 260 default: 261 BUG(); 262 } 263 if (r != 0 && printk_ratelimit()) 264 dev_err(dev, "MMC: unable to set bus mode for slot %d\n", 265 slot); 266 return r; 267 } 268 269 static int n8x0_mmc_get_cover_state(struct device *dev, int slot) 270 { 271 slot++; 272 BUG_ON(slot != 1 && slot != 2); 273 if (slot == 1) 274 return slot1_cover_open; 275 else 276 return slot2_cover_open; 277 } 278 279 static void n8x0_mmc_callback(void *data, u8 card_mask) 280 { 281 #ifdef CONFIG_MMC_OMAP 282 int bit, *openp, index; 283 284 if (board_is_n800()) { 285 bit = 1 << 1; 286 openp = &slot2_cover_open; 287 index = 1; 288 } else { 289 bit = 1; 290 openp = &slot1_cover_open; 291 index = 0; 292 } 293 294 if (card_mask & bit) 295 *openp = 1; 296 else 297 *openp = 0; 298 299 omap_mmc_notify_cover_event(mmc_device, index, *openp); 300 #else 301 pr_warn("MMC: notify cover event not available\n"); 302 #endif 303 } 304 305 static int n8x0_mmc_late_init(struct device *dev) 306 { 307 int r, bit, *openp; 308 int vs2sel; 309 310 mmc_device = dev; 311 312 r = menelaus_set_slot_sel(1); 313 if (r < 0) 314 return r; 315 316 if (board_is_n800()) 317 vs2sel = 0; 318 else 319 vs2sel = 2; 320 321 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1); 322 if (r < 0) 323 return r; 324 325 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */ 326 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16); 327 328 r = menelaus_set_mmc_slot(1, 1, 0, 1); 329 if (r < 0) 330 return r; 331 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1); 332 if (r < 0) 333 return r; 334 335 r = menelaus_get_slot_pin_states(); 336 if (r < 0) 337 return r; 338 339 if (board_is_n800()) { 340 bit = 1 << 1; 341 openp = &slot2_cover_open; 342 } else { 343 bit = 1; 344 openp = &slot1_cover_open; 345 slot2_cover_open = 0; 346 } 347 348 /* All slot pin bits seem to be inversed until first switch change */ 349 if (r == 0xf || r == (0xf & ~bit)) 350 r = ~r; 351 352 if (r & bit) 353 *openp = 1; 354 else 355 *openp = 0; 356 357 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL); 358 359 return r; 360 } 361 362 static void n8x0_mmc_shutdown(struct device *dev) 363 { 364 int vs2sel; 365 366 if (board_is_n800()) 367 vs2sel = 0; 368 else 369 vs2sel = 2; 370 371 menelaus_set_mmc_slot(1, 0, 0, 0); 372 menelaus_set_mmc_slot(2, 0, vs2sel, 0); 373 } 374 375 static void n8x0_mmc_cleanup(struct device *dev) 376 { 377 menelaus_unregister_mmc_callback(); 378 } 379 380 /* 381 * MMC controller1 has two slots that are multiplexed via I2C. 382 * MMC controller2 is not in use. 383 */ 384 static struct omap_mmc_platform_data mmc1_data = { 385 .nr_slots = 0, 386 .init = n8x0_mmc_late_init, 387 .cleanup = n8x0_mmc_cleanup, 388 .shutdown = n8x0_mmc_shutdown, 389 .max_freq = 24000000, 390 .slots[0] = { 391 .wires = 4, 392 .set_power = n8x0_mmc_set_power, 393 .set_bus_mode = n8x0_mmc_set_bus_mode, 394 .get_cover_state = n8x0_mmc_get_cover_state, 395 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 | 396 MMC_VDD_32_33 | MMC_VDD_33_34, 397 .name = "internal", 398 }, 399 .slots[1] = { 400 .set_power = n8x0_mmc_set_power, 401 .set_bus_mode = n8x0_mmc_set_bus_mode, 402 .get_cover_state = n8x0_mmc_get_cover_state, 403 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 | 404 MMC_VDD_21_22 | MMC_VDD_22_23 | 405 MMC_VDD_23_24 | MMC_VDD_24_25 | 406 MMC_VDD_27_28 | MMC_VDD_28_29 | 407 MMC_VDD_29_30 | MMC_VDD_30_31 | 408 MMC_VDD_32_33 | MMC_VDD_33_34, 409 .name = "external", 410 }, 411 }; 412 413 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC]; 414 415 static void __init n8x0_mmc_init(void) 416 { 417 if (board_is_n810()) { 418 mmc1_data.slots[0].name = "external"; 419 420 /* 421 * Some Samsung Movinand chips do not like open-ended 422 * multi-block reads and fall to braind-dead state 423 * while doing so. Reducing the number of blocks in 424 * the transfer or delays in clock disable do not help 425 */ 426 mmc1_data.slots[1].name = "internal"; 427 mmc1_data.slots[1].ban_openended = 1; 428 gpiod_add_lookup_table(&nokia810_mmc_gpio_table); 429 } else { 430 gpiod_add_lookup_table(&nokia800_mmc_gpio_table); 431 } 432 433 mmc1_data.nr_slots = 2; 434 mmc_data[0] = &mmc1_data; 435 } 436 #else 437 static struct omap_mmc_platform_data mmc1_data; 438 static void __init n8x0_mmc_init(void) 439 { 440 } 441 #endif /* CONFIG_MMC_OMAP */ 442 443 #ifdef CONFIG_MENELAUS 444 445 static int n8x0_auto_sleep_regulators(void) 446 { 447 u32 val; 448 int ret; 449 450 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \ 451 | EN_VAUX_SLEEP | EN_VIO_SLEEP \ 452 | EN_VMEM_SLEEP | EN_DC3_SLEEP \ 453 | EN_VC_SLEEP | EN_DC2_SLEEP; 454 455 ret = menelaus_set_regulator_sleep(1, val); 456 if (ret < 0) { 457 pr_err("Could not set regulators to sleep on menelaus: %u\n", 458 ret); 459 return ret; 460 } 461 return 0; 462 } 463 464 static int n8x0_auto_voltage_scale(void) 465 { 466 int ret; 467 468 ret = menelaus_set_vcore_hw(1400, 1050); 469 if (ret < 0) { 470 pr_err("Could not set VCORE voltage on menelaus: %u\n", ret); 471 return ret; 472 } 473 return 0; 474 } 475 476 static int n8x0_menelaus_late_init(struct device *dev) 477 { 478 int ret; 479 480 ret = n8x0_auto_voltage_scale(); 481 if (ret < 0) 482 return ret; 483 ret = n8x0_auto_sleep_regulators(); 484 if (ret < 0) 485 return ret; 486 return 0; 487 } 488 489 #else 490 static int n8x0_menelaus_late_init(struct device *dev) 491 { 492 return 0; 493 } 494 #endif 495 496 struct menelaus_platform_data n8x0_menelaus_platform_data = { 497 .late_init = n8x0_menelaus_late_init, 498 }; 499 500 static int __init n8x0_late_initcall(void) 501 { 502 if (!board_caps) 503 return -ENODEV; 504 505 n8x0_mmc_init(); 506 n8x0_usb_init(); 507 508 return 0; 509 } 510 omap_late_initcall(n8x0_late_initcall); 511 512 /* 513 * Legacy init pdata init for n8x0. Note that we want to follow the 514 * I2C bus numbering starting at 0 for device tree like other omaps. 515 */ 516 void * __init n8x0_legacy_init(void) 517 { 518 board_check_revision(); 519 spi_register_board_info(n800_spi_board_info, 520 ARRAY_SIZE(n800_spi_board_info)); 521 return &mmc1_data; 522 } 523