arch/arm/mach-omap2/board-n8x0.c

   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 struct gpiod_lookup_table nokia810_asoc_gpio_table = {
 499         .dev_id = "soc-audio",
 500         .table = {
 501                 GPIO_LOOKUP("gpio-0-15", 10, "headset", GPIO_ACTIVE_HIGH),
 502                 GPIO_LOOKUP("gpio-80-111", 21, "speaker", GPIO_ACTIVE_HIGH),
 503                 { }
 504         },
 505 };
 506
 507 static int __init n8x0_late_initcall(void)
 508 {
 509         if (!board_caps)
 510                 return -ENODEV;
 511
 512         n8x0_mmc_init();
 513         n8x0_usb_init();
 514         gpiod_add_lookup_table(&nokia810_asoc_gpio_table);
 515
 516         return 0;
 517 }
 518 omap_late_initcall(n8x0_late_initcall);
 519
 520 /*
 521  * Legacy init pdata init for n8x0. Note that we want to follow the
 522  * I2C bus numbering starting at 0 for device tree like other omaps.
 523  */
 524 void * __init n8x0_legacy_init(void)
 525 {
 526         board_check_revision();
 527         spi_register_board_info(n800_spi_board_info,
 528                                 ARRAY_SIZE(n800_spi_board_info));
 529         return &mmc1_data;
 530 }