arch/arm/mach-omap2/board-omap3beagle.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3beagle.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/io.h>
  22 #include <linux/leds.h>
  23 #include <linux/gpio.h>
  24 #include <linux/input.h>
  25 #include <linux/gpio_keys.h>
  26
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/mtd/nand.h>
  30 #include <linux/mmc/host.h>
  31
  32 #include <linux/regulator/machine.h>
  33 #include <linux/i2c/twl.h>
  34
  35 #include <mach/hardware.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/flash.h>
  40
  41 #include <plat/board.h>
  42 #include <plat/common.h>
  43 #include <plat/display.h>
  44 #include <plat/panel-generic-dpi.h>
  45 #include <plat/gpmc.h>
  46 #include <plat/nand.h>
  47 #include <plat/usb.h>
  48
  49 #include "mux.h"
  50 #include "hsmmc.h"
  51 #include "timer-gp.h"
  52
  53 #define NAND_BLOCK_SIZE         SZ_128K
  54
  55 /*
  56  * OMAP3 Beagle revision
  57  * Run time detection of Beagle revision is done by reading GPIO.
  58  * GPIO ID -
  59  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  60  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  61  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  62  *      XM      = GPIO173, GPIO172, GPIO171: 0 0 0
  63  */
  64 enum {
  65         OMAP3BEAGLE_BOARD_UNKN = 0,
  66         OMAP3BEAGLE_BOARD_AXBX,
  67         OMAP3BEAGLE_BOARD_C1_3,
  68         OMAP3BEAGLE_BOARD_C4,
  69         OMAP3BEAGLE_BOARD_XM,
  70 };
  71
  72 static u8 omap3_beagle_version;
  73
  74 static u8 omap3_beagle_get_rev(void)
  75 {
  76         return omap3_beagle_version;
  77 }
  78
  79 static void __init omap3_beagle_init_rev(void)
  80 {
  81         int ret;
  82         u16 beagle_rev = 0;
  83
  84         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
  85         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
  86         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
  87
  88         ret = gpio_request(171, "rev_id_0");
  89         if (ret < 0)
  90                 goto fail0;
  91
  92         ret = gpio_request(172, "rev_id_1");
  93         if (ret < 0)
  94                 goto fail1;
  95
  96         ret = gpio_request(173, "rev_id_2");
  97         if (ret < 0)
  98                 goto fail2;
  99
 100         gpio_direction_input(171);
 101         gpio_direction_input(172);
 102         gpio_direction_input(173);
 103
 104         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 105                         | (gpio_get_value(173) << 2);
 106
 107         switch (beagle_rev) {
 108         case 7:
 109                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 110                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 111                 break;
 112         case 6:
 113                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 114                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 115                 break;
 116         case 5:
 117                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 118                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 119                 break;
 120         case 0:
 121                 printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
 122                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 123                 break;
 124         default:
 125                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 126                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 127         }
 128
 129         return;
 130
 131 fail2:
 132         gpio_free(172);
 133 fail1:
 134         gpio_free(171);
 135 fail0:
 136         printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 137         omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 138
 139         return;
 140 }
 141
 142 static struct mtd_partition omap3beagle_nand_partitions[] = {
 143         /* All the partition sizes are listed in terms of NAND block size */
 144         {
 145                 .name           = "X-Loader",
 146                 .offset         = 0,
 147                 .size           = 4 * NAND_BLOCK_SIZE,
 148                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 149         },
 150         {
 151                 .name           = "U-Boot",
 152                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 153                 .size           = 15 * NAND_BLOCK_SIZE,
 154                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 155         },
 156         {
 157                 .name           = "U-Boot Env",
 158                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 159                 .size           = 1 * NAND_BLOCK_SIZE,
 160         },
 161         {
 162                 .name           = "Kernel",
 163                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 164                 .size           = 32 * NAND_BLOCK_SIZE,
 165         },
 166         {
 167                 .name           = "File System",
 168                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 169                 .size           = MTDPART_SIZ_FULL,
 170         },
 171 };
 172
 173 static struct omap_nand_platform_data omap3beagle_nand_data = {
 174         .options        = NAND_BUSWIDTH_16,
 175         .parts          = omap3beagle_nand_partitions,
 176         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
 177         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
 178         .nand_setup     = NULL,
 179         .dev_ready      = NULL,
 180 };
 181
 182 /* DSS */
 183
 184 static int beagle_enable_dvi(struct omap_dss_device *dssdev)
 185 {
 186         if (gpio_is_valid(dssdev->reset_gpio))
 187                 gpio_set_value(dssdev->reset_gpio, 1);
 188
 189         return 0;
 190 }
 191
 192 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
 193 {
 194         if (gpio_is_valid(dssdev->reset_gpio))
 195                 gpio_set_value(dssdev->reset_gpio, 0);
 196 }
 197
 198 static struct panel_generic_dpi_data dvi_panel = {
 199         .name = "generic",
 200         .platform_enable = beagle_enable_dvi,
 201         .platform_disable = beagle_disable_dvi,
 202 };
 203
 204 static struct omap_dss_device beagle_dvi_device = {
 205         .type = OMAP_DISPLAY_TYPE_DPI,
 206         .name = "dvi",
 207         .driver_name = "generic_dpi_panel",
 208         .data = &dvi_panel,
 209         .phy.dpi.data_lines = 24,
 210         .reset_gpio = 170,
 211 };
 212
 213 static struct omap_dss_device beagle_tv_device = {
 214         .name = "tv",
 215         .driver_name = "venc",
 216         .type = OMAP_DISPLAY_TYPE_VENC,
 217         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 218 };
 219
 220 static struct omap_dss_device *beagle_dss_devices[] = {
 221         &beagle_dvi_device,
 222         &beagle_tv_device,
 223 };
 224
 225 static struct omap_dss_board_info beagle_dss_data = {
 226         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 227         .devices = beagle_dss_devices,
 228         .default_device = &beagle_dvi_device,
 229 };
 230
 231 static struct platform_device beagle_dss_device = {
 232         .name          = "omapdss",
 233         .id            = -1,
 234         .dev            = {
 235                 .platform_data = &beagle_dss_data,
 236         },
 237 };
 238
 239 static struct regulator_consumer_supply beagle_vdac_supply =
 240         REGULATOR_SUPPLY("vdda_dac", "omapdss");
 241
 242 static struct regulator_consumer_supply beagle_vdvi_supply =
 243         REGULATOR_SUPPLY("vdds_dsi", "omapdss");
 244
 245 static void __init beagle_display_init(void)
 246 {
 247         int r;
 248
 249         r = gpio_request(beagle_dvi_device.reset_gpio, "DVI reset");
 250         if (r < 0) {
 251                 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
 252                 return;
 253         }
 254
 255         gpio_direction_output(beagle_dvi_device.reset_gpio, 0);
 256 }
 257
 258 #include "sdram-micron-mt46h32m32lf-6.h"
 259
 260 static struct omap2_hsmmc_info mmc[] = {
 261         {
 262                 .mmc            = 1,
 263                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 264                 .gpio_wp        = 29,
 265         },
 266         {}      /* Terminator */
 267 };
 268
 269 static struct regulator_consumer_supply beagle_vmmc1_supply = {
 270         .supply                 = "vmmc",
 271 };
 272
 273 static struct regulator_consumer_supply beagle_vsim_supply = {
 274         .supply                 = "vmmc_aux",
 275 };
 276
 277 static struct gpio_led gpio_leds[];
 278
 279 static int beagle_twl_gpio_setup(struct device *dev,
 280                 unsigned gpio, unsigned ngpio)
 281 {
 282         if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
 283                 mmc[0].gpio_wp = -EINVAL;
 284         } else if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
 285                 (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
 286                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 287                 mmc[0].gpio_wp = 23;
 288         } else {
 289                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 290         }
 291         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 292         mmc[0].gpio_cd = gpio + 0;
 293         omap2_hsmmc_init(mmc);
 294
 295         /* link regulators to MMC adapters */
 296         beagle_vmmc1_supply.dev = mmc[0].dev;
 297         beagle_vsim_supply.dev = mmc[0].dev;
 298
 299         /* REVISIT: need ehci-omap hooks for external VBUS
 300          * power switch and overcurrent detect
 301          */
 302
 303         gpio_request(gpio + 1, "EHCI_nOC");
 304         gpio_direction_input(gpio + 1);
 305
 306         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 307         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 308         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 309
 310         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 311         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 312
 313         return 0;
 314 }
 315
 316 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 317         .gpio_base      = OMAP_MAX_GPIO_LINES,
 318         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 319         .irq_end        = TWL4030_GPIO_IRQ_END,
 320         .use_leds       = true,
 321         .pullups        = BIT(1),
 322         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 323                                 | BIT(15) | BIT(16) | BIT(17),
 324         .setup          = beagle_twl_gpio_setup,
 325 };
 326
 327 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 328 static struct regulator_init_data beagle_vmmc1 = {
 329         .constraints = {
 330                 .min_uV                 = 1850000,
 331                 .max_uV                 = 3150000,
 332                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 333                                         | REGULATOR_MODE_STANDBY,
 334                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 335                                         | REGULATOR_CHANGE_MODE
 336                                         | REGULATOR_CHANGE_STATUS,
 337         },
 338         .num_consumer_supplies  = 1,
 339         .consumer_supplies      = &beagle_vmmc1_supply,
 340 };
 341
 342 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 343 static struct regulator_init_data beagle_vsim = {
 344         .constraints = {
 345                 .min_uV                 = 1800000,
 346                 .max_uV                 = 3000000,
 347                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 348                                         | REGULATOR_MODE_STANDBY,
 349                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 350                                         | REGULATOR_CHANGE_MODE
 351                                         | REGULATOR_CHANGE_STATUS,
 352         },
 353         .num_consumer_supplies  = 1,
 354         .consumer_supplies      = &beagle_vsim_supply,
 355 };
 356
 357 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 358 static struct regulator_init_data beagle_vdac = {
 359         .constraints = {
 360                 .min_uV                 = 1800000,
 361                 .max_uV                 = 1800000,
 362                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 363                                         | REGULATOR_MODE_STANDBY,
 364                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 365                                         | REGULATOR_CHANGE_STATUS,
 366         },
 367         .num_consumer_supplies  = 1,
 368         .consumer_supplies      = &beagle_vdac_supply,
 369 };
 370
 371 /* VPLL2 for digital video outputs */
 372 static struct regulator_init_data beagle_vpll2 = {
 373         .constraints = {
 374                 .name                   = "VDVI",
 375                 .min_uV                 = 1800000,
 376                 .max_uV                 = 1800000,
 377                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 378                                         | REGULATOR_MODE_STANDBY,
 379                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 380                                         | REGULATOR_CHANGE_STATUS,
 381         },
 382         .num_consumer_supplies  = 1,
 383         .consumer_supplies      = &beagle_vdvi_supply,
 384 };
 385
 386 static struct twl4030_usb_data beagle_usb_data = {
 387         .usb_mode       = T2_USB_MODE_ULPI,
 388 };
 389
 390 static struct twl4030_codec_audio_data beagle_audio_data = {
 391         .audio_mclk = 26000000,
 392 };
 393
 394 static struct twl4030_codec_data beagle_codec_data = {
 395         .audio_mclk = 26000000,
 396         .audio = &beagle_audio_data,
 397 };
 398
 399 static struct twl4030_platform_data beagle_twldata = {
 400         .irq_base       = TWL4030_IRQ_BASE,
 401         .irq_end        = TWL4030_IRQ_END,
 402
 403         /* platform_data for children goes here */
 404         .usb            = &beagle_usb_data,
 405         .gpio           = &beagle_gpio_data,
 406         .codec          = &beagle_codec_data,
 407         .vmmc1          = &beagle_vmmc1,
 408         .vsim           = &beagle_vsim,
 409         .vdac           = &beagle_vdac,
 410         .vpll2          = &beagle_vpll2,
 411 };
 412
 413 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 414         {
 415                 I2C_BOARD_INFO("twl4030", 0x48),
 416                 .flags = I2C_CLIENT_WAKE,
 417                 .irq = INT_34XX_SYS_NIRQ,
 418                 .platform_data = &beagle_twldata,
 419         },
 420 };
 421
 422 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 423        {
 424                I2C_BOARD_INFO("eeprom", 0x50),
 425        },
 426 };
 427
 428 static int __init omap3_beagle_i2c_init(void)
 429 {
 430         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 431                         ARRAY_SIZE(beagle_i2c_boardinfo));
 432         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 433          * projector don't work reliably with 400kHz */
 434         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 435         return 0;
 436 }
 437
 438 static struct gpio_led gpio_leds[] = {
 439         {
 440                 .name                   = "beagleboard::usr0",
 441                 .default_trigger        = "heartbeat",
 442                 .gpio                   = 150,
 443         },
 444         {
 445                 .name                   = "beagleboard::usr1",
 446                 .default_trigger        = "mmc0",
 447                 .gpio                   = 149,
 448         },
 449         {
 450                 .name                   = "beagleboard::pmu_stat",
 451                 .gpio                   = -EINVAL,      /* gets replaced */
 452                 .active_low             = true,
 453         },
 454 };
 455
 456 static struct gpio_led_platform_data gpio_led_info = {
 457         .leds           = gpio_leds,
 458         .num_leds       = ARRAY_SIZE(gpio_leds),
 459 };
 460
 461 static struct platform_device leds_gpio = {
 462         .name   = "leds-gpio",
 463         .id     = -1,
 464         .dev    = {
 465                 .platform_data  = &gpio_led_info,
 466         },
 467 };
 468
 469 static struct gpio_keys_button gpio_buttons[] = {
 470         {
 471                 .code                   = BTN_EXTRA,
 472                 .gpio                   = 7,
 473                 .desc                   = "user",
 474                 .wakeup                 = 1,
 475         },
 476 };
 477
 478 static struct gpio_keys_platform_data gpio_key_info = {
 479         .buttons        = gpio_buttons,
 480         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 481 };
 482
 483 static struct platform_device keys_gpio = {
 484         .name   = "gpio-keys",
 485         .id     = -1,
 486         .dev    = {
 487                 .platform_data  = &gpio_key_info,
 488         },
 489 };
 490
 491 static void __init omap3_beagle_init_irq(void)
 492 {
 493         omap2_init_common_infrastructure();
 494         omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
 495                                   mt46h32m32lf6_sdrc_params);
 496         omap_init_irq();
 497 #ifdef CONFIG_OMAP_32K_TIMER
 498         omap2_gp_clockevent_set_gptimer(12);
 499 #endif
 500 }
 501
 502 static struct platform_device *omap3_beagle_devices[] __initdata = {
 503         &leds_gpio,
 504         &keys_gpio,
 505         &beagle_dss_device,
 506 };
 507
 508 static void __init omap3beagle_flash_init(void)
 509 {
 510         u8 cs = 0;
 511         u8 nandcs = GPMC_CS_NUM + 1;
 512
 513         /* find out the chip-select on which NAND exists */
 514         while (cs < GPMC_CS_NUM) {
 515                 u32 ret = 0;
 516                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 517
 518                 if ((ret & 0xC00) == 0x800) {
 519                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 520                         if (nandcs > GPMC_CS_NUM)
 521                                 nandcs = cs;
 522                 }
 523                 cs++;
 524         }
 525
 526         if (nandcs > GPMC_CS_NUM) {
 527                 printk(KERN_INFO "NAND: Unable to find configuration "
 528                                  "in GPMC\n ");
 529                 return;
 530         }
 531
 532         if (nandcs < GPMC_CS_NUM) {
 533                 omap3beagle_nand_data.cs = nandcs;
 534
 535                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 536                 if (gpmc_nand_init(&omap3beagle_nand_data) < 0)
 537                         printk(KERN_ERR "Unable to register NAND device\n");
 538         }
 539 }
 540
 541 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 542
 543         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 544         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 545         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 546
 547         .phy_reset  = true,
 548         .reset_gpio_port[0]  = -EINVAL,
 549         .reset_gpio_port[1]  = 147,
 550         .reset_gpio_port[2]  = -EINVAL
 551 };
 552
 553 #ifdef CONFIG_OMAP_MUX
 554 static struct omap_board_mux board_mux[] __initdata = {
 555         { .reg_offset = OMAP_MUX_TERMINATOR },
 556 };
 557 #endif
 558
 559 static struct omap_musb_board_data musb_board_data = {
 560         .interface_type         = MUSB_INTERFACE_ULPI,
 561         .mode                   = MUSB_OTG,
 562         .power                  = 100,
 563 };
 564
 565 static void __init omap3_beagle_init(void)
 566 {
 567         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 568         omap3_beagle_init_rev();
 569         omap3_beagle_i2c_init();
 570         platform_add_devices(omap3_beagle_devices,
 571                         ARRAY_SIZE(omap3_beagle_devices));
 572         omap_serial_init();
 573
 574         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 575         gpio_request(170, "DVI_nPD");
 576         /* REVISIT leave DVI powered down until it's needed ... */
 577         gpio_direction_output(170, true);
 578
 579         usb_musb_init(&musb_board_data);
 580         usb_ehci_init(&ehci_pdata);
 581         omap3beagle_flash_init();
 582
 583         /* Ensure SDRC pins are mux'd for self-refresh */
 584         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 585         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 586
 587         beagle_display_init();
 588 }
 589
 590 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 591         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 592         .boot_params    = 0x80000100,
 593         .map_io         = omap3_map_io,
 594         .reserve        = omap_reserve,
 595         .init_irq       = omap3_beagle_init_irq,
 596         .init_machine   = omap3_beagle_init,
 597         .timer          = &omap_timer,
 598 MACHINE_END