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/pwm.h>
  24 #include <linux/leds_pwm.h>
  25 #include <linux/gpio.h>
  26 #include <linux/input.h>
  27 #include <linux/gpio_keys.h>
  28 #include <linux/opp.h>
  29 #include <linux/cpu.h>
  30
  31 #include <linux/mtd/mtd.h>
  32 #include <linux/mtd/partitions.h>
  33 #include <linux/mtd/nand.h>
  34 #include <linux/mmc/host.h>
  35
  36 #include <linux/regulator/machine.h>
  37 #include <linux/i2c/twl.h>
  38
  39 #include <asm/mach-types.h>
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/flash.h>
  43
  44 #include <video/omapdss.h>
  45 #include <video/omap-panel-tfp410.h>
  46 #include <linux/platform_data/mtd-nand-omap2.h>
  47
  48 #include "common.h"
  49 #include "omap_device.h"
  50 #include "gpmc.h"
  51 #include "soc.h"
  52 #include "mux.h"
  53 #include "hsmmc.h"
  54 #include "pm.h"
  55 #include "board-flash.h"
  56 #include "common-board-devices.h"
  57
  58 #define NAND_CS 0
  59
  60 static struct pwm_lookup pwm_lookup[] = {
  61         /* LEDB -> PMU_STAT */
  62         PWM_LOOKUP("twl-pwmled", 1, "leds_pwm", "beagleboard::pmu_stat"),
  63 };
  64
  65 static struct led_pwm pwm_leds[] = {
  66         {
  67                 .name           = "beagleboard::pmu_stat",
  68                 .max_brightness = 127,
  69                 .pwm_period_ns  = 7812500,
  70         },
  71 };
  72
  73 static struct led_pwm_platform_data pwm_data = {
  74         .num_leds       = ARRAY_SIZE(pwm_leds),
  75         .leds           = pwm_leds,
  76 };
  77
  78 static struct platform_device leds_pwm = {
  79         .name   = "leds_pwm",
  80         .id     = -1,
  81         .dev    = {
  82                 .platform_data = &pwm_data,
  83         },
  84 };
  85
  86 /*
  87  * OMAP3 Beagle revision
  88  * Run time detection of Beagle revision is done by reading GPIO.
  89  * GPIO ID -
  90  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  91  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  92  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  93  *      XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
  94  *      XMC = GPIO173, GPIO172, GPIO171: 0 1 0
  95  */
  96 enum {
  97         OMAP3BEAGLE_BOARD_UNKN = 0,
  98         OMAP3BEAGLE_BOARD_AXBX,
  99         OMAP3BEAGLE_BOARD_C1_3,
 100         OMAP3BEAGLE_BOARD_C4,
 101         OMAP3BEAGLE_BOARD_XM,
 102         OMAP3BEAGLE_BOARD_XMC,
 103 };
 104
 105 static u8 omap3_beagle_version;
 106
 107 /*
 108  * Board-specific configuration
 109  * Defaults to BeagleBoard-xMC
 110  */
 111 static struct {
 112         int mmc1_gpio_wp;
 113         int usb_pwr_level;
 114         int dvi_pd_gpio;
 115         int usr_button_gpio;
 116         int mmc_caps;
 117 } beagle_config = {
 118         .mmc1_gpio_wp = -EINVAL,
 119         .usb_pwr_level = GPIOF_OUT_INIT_LOW,
 120         .dvi_pd_gpio = -EINVAL,
 121         .usr_button_gpio = 4,
 122         .mmc_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 123 };
 124
 125 static struct gpio omap3_beagle_rev_gpios[] __initdata = {
 126         { 171, GPIOF_IN, "rev_id_0"    },
 127         { 172, GPIOF_IN, "rev_id_1" },
 128         { 173, GPIOF_IN, "rev_id_2"    },
 129 };
 130
 131 static void __init omap3_beagle_init_rev(void)
 132 {
 133         int ret;
 134         u16 beagle_rev = 0;
 135
 136         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
 137         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
 138         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
 139
 140         ret = gpio_request_array(omap3_beagle_rev_gpios,
 141                                  ARRAY_SIZE(omap3_beagle_rev_gpios));
 142         if (ret < 0) {
 143                 printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 144                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 145                 return;
 146         }
 147
 148         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 149                         | (gpio_get_value(173) << 2);
 150
 151         gpio_free_array(omap3_beagle_rev_gpios,
 152                         ARRAY_SIZE(omap3_beagle_rev_gpios));
 153
 154         switch (beagle_rev) {
 155         case 7:
 156                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 157                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 158                 beagle_config.mmc1_gpio_wp = 29;
 159                 beagle_config.dvi_pd_gpio = 170;
 160                 beagle_config.usr_button_gpio = 7;
 161                 break;
 162         case 6:
 163                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 164                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 165                 beagle_config.mmc1_gpio_wp = 23;
 166                 beagle_config.dvi_pd_gpio = 170;
 167                 beagle_config.usr_button_gpio = 7;
 168                 break;
 169         case 5:
 170                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 171                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 172                 beagle_config.mmc1_gpio_wp = 23;
 173                 beagle_config.dvi_pd_gpio = 170;
 174                 beagle_config.usr_button_gpio = 7;
 175                 break;
 176         case 0:
 177                 printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
 178                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 179                 beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
 180                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 181                 break;
 182         case 2:
 183                 printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
 184                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
 185                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 186                 break;
 187         default:
 188                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 189                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 190         }
 191 }
 192
 193 static struct mtd_partition omap3beagle_nand_partitions[] = {
 194         /* All the partition sizes are listed in terms of NAND block size */
 195         {
 196                 .name           = "X-Loader",
 197                 .offset         = 0,
 198                 .size           = 4 * NAND_BLOCK_SIZE,
 199                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 200         },
 201         {
 202                 .name           = "U-Boot",
 203                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 204                 .size           = 15 * NAND_BLOCK_SIZE,
 205                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 206         },
 207         {
 208                 .name           = "U-Boot Env",
 209                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 210                 .size           = 1 * NAND_BLOCK_SIZE,
 211         },
 212         {
 213                 .name           = "Kernel",
 214                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 215                 .size           = 32 * NAND_BLOCK_SIZE,
 216         },
 217         {
 218                 .name           = "File System",
 219                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 220                 .size           = MTDPART_SIZ_FULL,
 221         },
 222 };
 223
 224 /* DSS */
 225
 226 static struct tfp410_platform_data dvi_panel = {
 227         .i2c_bus_num = 3,
 228         .power_down_gpio = -1,
 229 };
 230
 231 static struct omap_dss_device beagle_dvi_device = {
 232         .type = OMAP_DISPLAY_TYPE_DPI,
 233         .name = "dvi",
 234         .driver_name = "tfp410",
 235         .data = &dvi_panel,
 236         .phy.dpi.data_lines = 24,
 237 };
 238
 239 static struct omap_dss_device beagle_tv_device = {
 240         .name = "tv",
 241         .driver_name = "venc",
 242         .type = OMAP_DISPLAY_TYPE_VENC,
 243         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 244 };
 245
 246 static struct omap_dss_device *beagle_dss_devices[] = {
 247         &beagle_dvi_device,
 248         &beagle_tv_device,
 249 };
 250
 251 static struct omap_dss_board_info beagle_dss_data = {
 252         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 253         .devices = beagle_dss_devices,
 254         .default_device = &beagle_dvi_device,
 255 };
 256
 257 #include "sdram-micron-mt46h32m32lf-6.h"
 258
 259 static struct omap2_hsmmc_info mmc[] = {
 260         {
 261                 .mmc            = 1,
 262                 .caps           = MMC_CAP_4_BIT_DATA,
 263                 .gpio_wp        = -EINVAL,
 264                 .deferred       = true,
 265         },
 266         {}      /* Terminator */
 267 };
 268
 269 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 270         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 271 };
 272
 273 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 274         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 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         int r;
 283
 284         mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
 285         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 286         mmc[0].gpio_cd = gpio + 0;
 287         omap_hsmmc_late_init(mmc);
 288
 289         /*
 290          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 291          * high / others active low)
 292          * DVI reset GPIO is different between beagle revisions
 293          */
 294         /* Valid for all -xM revisions */
 295         if (cpu_is_omap3630()) {
 296                 /*
 297                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 298                  * gpio + 2 control varies depending on the board rev as below:
 299                  * P7/P8 revisions(prototype): Camera EN
 300                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 301                  */
 302                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 303                                      "nDVI_PWR_EN");
 304                 if (r)
 305                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 306                                 __func__);
 307
 308                 beagle_config.dvi_pd_gpio = gpio + 2;
 309
 310         } else {
 311                 /*
 312                  * REVISIT: need ehci-omap hooks for external VBUS
 313                  * power switch and overcurrent detect
 314                  */
 315                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 316                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 317         }
 318         dvi_panel.power_down_gpio = beagle_config.dvi_pd_gpio;
 319
 320         gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
 321                         "nEN_USB_PWR");
 322
 323         return 0;
 324 }
 325
 326 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 327         .use_leds       = true,
 328         .pullups        = BIT(1),
 329         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 330                                 | BIT(15) | BIT(16) | BIT(17),
 331         .setup          = beagle_twl_gpio_setup,
 332 };
 333
 334 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 335 static struct regulator_init_data beagle_vmmc1 = {
 336         .constraints = {
 337                 .min_uV                 = 1850000,
 338                 .max_uV                 = 3150000,
 339                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 340                                         | REGULATOR_MODE_STANDBY,
 341                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 342                                         | REGULATOR_CHANGE_MODE
 343                                         | REGULATOR_CHANGE_STATUS,
 344         },
 345         .num_consumer_supplies  = ARRAY_SIZE(beagle_vmmc1_supply),
 346         .consumer_supplies      = beagle_vmmc1_supply,
 347 };
 348
 349 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 350 static struct regulator_init_data beagle_vsim = {
 351         .constraints = {
 352                 .min_uV                 = 1800000,
 353                 .max_uV                 = 3000000,
 354                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 355                                         | REGULATOR_MODE_STANDBY,
 356                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 357                                         | REGULATOR_CHANGE_MODE
 358                                         | REGULATOR_CHANGE_STATUS,
 359         },
 360         .num_consumer_supplies  = ARRAY_SIZE(beagle_vsim_supply),
 361         .consumer_supplies      = beagle_vsim_supply,
 362 };
 363
 364 static struct twl4030_platform_data beagle_twldata = {
 365         /* platform_data for children goes here */
 366         .gpio           = &beagle_gpio_data,
 367         .vmmc1          = &beagle_vmmc1,
 368         .vsim           = &beagle_vsim,
 369 };
 370
 371 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 372        {
 373                I2C_BOARD_INFO("eeprom", 0x50),
 374        },
 375 };
 376
 377 static int __init omap3_beagle_i2c_init(void)
 378 {
 379         omap3_pmic_get_config(&beagle_twldata,
 380                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
 381                         TWL_COMMON_PDATA_AUDIO,
 382                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 383
 384         beagle_twldata.vpll2->constraints.name = "VDVI";
 385
 386         omap3_pmic_init("twl4030", &beagle_twldata);
 387         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 388          * projector don't work reliably with 400kHz */
 389         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 390         return 0;
 391 }
 392
 393 static struct gpio_led gpio_leds[] = {
 394         {
 395                 .name                   = "beagleboard::usr0",
 396                 .default_trigger        = "heartbeat",
 397                 .gpio                   = 150,
 398         },
 399         {
 400                 .name                   = "beagleboard::usr1",
 401                 .default_trigger        = "mmc0",
 402                 .gpio                   = 149,
 403         },
 404 };
 405
 406 static struct gpio_led_platform_data gpio_led_info = {
 407         .leds           = gpio_leds,
 408         .num_leds       = ARRAY_SIZE(gpio_leds),
 409 };
 410
 411 static struct platform_device leds_gpio = {
 412         .name   = "leds-gpio",
 413         .id     = -1,
 414         .dev    = {
 415                 .platform_data  = &gpio_led_info,
 416         },
 417 };
 418
 419 static struct gpio_keys_button gpio_buttons[] = {
 420         {
 421                 .code                   = BTN_EXTRA,
 422                 /* Dynamically assigned depending on board */
 423                 .gpio                   = -EINVAL,
 424                 .desc                   = "user",
 425                 .wakeup                 = 1,
 426         },
 427 };
 428
 429 static struct gpio_keys_platform_data gpio_key_info = {
 430         .buttons        = gpio_buttons,
 431         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 432 };
 433
 434 static struct platform_device keys_gpio = {
 435         .name   = "gpio-keys",
 436         .id     = -1,
 437         .dev    = {
 438                 .platform_data  = &gpio_key_info,
 439         },
 440 };
 441
 442 static struct platform_device madc_hwmon = {
 443         .name   = "twl4030_madc_hwmon",
 444         .id     = -1,
 445 };
 446
 447 static struct platform_device *omap3_beagle_devices[] __initdata = {
 448         &leds_gpio,
 449         &keys_gpio,
 450         &madc_hwmon,
 451         &leds_pwm,
 452 };
 453
 454 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 455
 456         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 457         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 458         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 459
 460         .phy_reset  = true,
 461         .reset_gpio_port[0]  = -EINVAL,
 462         .reset_gpio_port[1]  = 147,
 463         .reset_gpio_port[2]  = -EINVAL
 464 };
 465
 466 #ifdef CONFIG_OMAP_MUX
 467 static struct omap_board_mux board_mux[] __initdata = {
 468         { .reg_offset = OMAP_MUX_TERMINATOR },
 469 };
 470 #endif
 471
 472 static int __init beagle_opp_init(void)
 473 {
 474         int r = 0;
 475
 476         if (!machine_is_omap3_beagle())
 477                 return 0;
 478
 479         /* Initialize the omap3 opp table if not already created. */
 480         r = omap3_opp_init();
 481         if (IS_ERR_VALUE(r) && (r != -EEXIST)) {
 482                 pr_err("%s: opp default init failed\n", __func__);
 483                 return r;
 484         }
 485
 486         /* Custom OPP enabled for all xM versions */
 487         if (cpu_is_omap3630()) {
 488                 struct device *mpu_dev, *iva_dev;
 489
 490                 mpu_dev = get_cpu_device(0);
 491                 iva_dev = omap_device_get_by_hwmod_name("iva");
 492
 493                 if (IS_ERR(mpu_dev) || IS_ERR(iva_dev)) {
 494                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 495                                 __func__, mpu_dev, iva_dev);
 496                         return -ENODEV;
 497                 }
 498                 /* Enable MPU 1GHz and lower opps */
 499                 r = opp_enable(mpu_dev, 800000000);
 500                 /* TODO: MPU 1GHz needs SR and ABB */
 501
 502                 /* Enable IVA 800MHz and lower opps */
 503                 r |= opp_enable(iva_dev, 660000000);
 504                 /* TODO: DSP 800MHz needs SR and ABB */
 505                 if (r) {
 506                         pr_err("%s: failed to enable higher opp %d\n",
 507                                 __func__, r);
 508                         /*
 509                          * Cleanup - disable the higher freqs - we dont care
 510                          * about the results
 511                          */
 512                         opp_disable(mpu_dev, 800000000);
 513                         opp_disable(iva_dev, 660000000);
 514                 }
 515         }
 516         return 0;
 517 }
 518 device_initcall(beagle_opp_init);
 519
 520 static void __init omap3_beagle_init(void)
 521 {
 522         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 523         omap3_beagle_init_rev();
 524
 525         if (gpio_is_valid(beagle_config.mmc1_gpio_wp))
 526                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 527         mmc[0].caps = beagle_config.mmc_caps;
 528         omap_hsmmc_init(mmc);
 529
 530         omap3_beagle_i2c_init();
 531
 532         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 533
 534         platform_add_devices(omap3_beagle_devices,
 535                         ARRAY_SIZE(omap3_beagle_devices));
 536         if (gpio_is_valid(beagle_config.dvi_pd_gpio))
 537                 omap_mux_init_gpio(beagle_config.dvi_pd_gpio, OMAP_PIN_OUTPUT);
 538         omap_display_init(&beagle_dss_data);
 539         omap_serial_init();
 540         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 541                                   mt46h32m32lf6_sdrc_params);
 542
 543         usb_musb_init(NULL);
 544         usbhs_init(&usbhs_bdata);
 545         board_nand_init(omap3beagle_nand_partitions,
 546                         ARRAY_SIZE(omap3beagle_nand_partitions), NAND_CS,
 547                         NAND_BUSWIDTH_16, NULL);
 548         omap_twl4030_audio_init("omap3beagle", NULL);
 549
 550         /* Ensure msecure is mux'd to be able to set the RTC. */
 551         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 552
 553         /* Ensure SDRC pins are mux'd for self-refresh */
 554         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 555         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 556
 557         pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
 558 }
 559
 560 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 561         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 562         .atag_offset    = 0x100,
 563         .reserve        = omap_reserve,
 564         .map_io         = omap3_map_io,
 565         .init_early     = omap3_init_early,
 566         .init_irq       = omap3_init_irq,
 567         .handle_irq     = omap3_intc_handle_irq,
 568         .init_machine   = omap3_beagle_init,
 569         .init_late      = omap3_init_late,
 570         .timer          = &omap3_secure_timer,
 571         .restart        = omap3xxx_restart,
 572 MACHINE_END