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