arch/arm/mach-omap2/board-omap3touchbook.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3touchbook.c
   3  *
   4  * Copyright (C) 2009 Always Innovating
   5  *
   6  * Modified from mach-omap2/board-omap3beagleboard.c
   7  *
   8  * Initial code: Grégoire Gentil, Tim Yamin
   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
  31 #include <plat/mcspi.h>
  32 #include <linux/spi/spi.h>
  33
  34 #include <linux/spi/ads7846.h>
  35
  36 #include <linux/regulator/machine.h>
  37 #include <linux/i2c/twl.h>
  38
  39 #include <mach/hardware.h>
  40 #include <asm/mach-types.h>
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/map.h>
  43 #include <asm/mach/flash.h>
  44
  45 #include <plat/board.h>
  46 #include <plat/common.h>
  47 #include <plat/gpmc.h>
  48 #include <plat/nand.h>
  49 #include <plat/usb.h>
  50 #include <plat/timer-gp.h>
  51
  52 #include "mux.h"
  53 #include "mmc-twl4030.h"
  54
  55 #include <asm/setup.h>
  56
  57 #define GPMC_CS0_BASE  0x60
  58 #define GPMC_CS_SIZE   0x30
  59
  60 #define NAND_BLOCK_SIZE         SZ_128K
  61
  62 #define OMAP3_AC_GPIO           136
  63 #define OMAP3_TS_GPIO           162
  64 #define TB_BL_PWM_TIMER         9
  65 #define TB_KILL_POWER_GPIO      168
  66
  67 unsigned long touchbook_revision;
  68
  69 static struct mtd_partition omap3touchbook_nand_partitions[] = {
  70         /* All the partition sizes are listed in terms of NAND block size */
  71         {
  72                 .name           = "X-Loader",
  73                 .offset         = 0,
  74                 .size           = 4 * NAND_BLOCK_SIZE,
  75                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  76         },
  77         {
  78                 .name           = "U-Boot",
  79                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  80                 .size           = 15 * NAND_BLOCK_SIZE,
  81                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  82         },
  83         {
  84                 .name           = "U-Boot Env",
  85                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  86                 .size           = 1 * NAND_BLOCK_SIZE,
  87         },
  88         {
  89                 .name           = "Kernel",
  90                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  91                 .size           = 32 * NAND_BLOCK_SIZE,
  92         },
  93         {
  94                 .name           = "File System",
  95                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  96                 .size           = MTDPART_SIZ_FULL,
  97         },
  98 };
  99
 100 static struct omap_nand_platform_data omap3touchbook_nand_data = {
 101         .options        = NAND_BUSWIDTH_16,
 102         .parts          = omap3touchbook_nand_partitions,
 103         .nr_parts       = ARRAY_SIZE(omap3touchbook_nand_partitions),
 104         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
 105         .nand_setup     = NULL,
 106         .dev_ready      = NULL,
 107 };
 108
 109 static struct resource omap3touchbook_nand_resource = {
 110         .flags          = IORESOURCE_MEM,
 111 };
 112
 113 static struct platform_device omap3touchbook_nand_device = {
 114         .name           = "omap2-nand",
 115         .id             = -1,
 116         .dev            = {
 117                 .platform_data  = &omap3touchbook_nand_data,
 118         },
 119         .num_resources  = 1,
 120         .resource       = &omap3touchbook_nand_resource,
 121 };
 122
 123 #include "sdram-micron-mt46h32m32lf-6.h"
 124
 125 static struct twl4030_hsmmc_info mmc[] = {
 126         {
 127                 .mmc            = 1,
 128                 .wires          = 8,
 129                 .gpio_wp        = 29,
 130         },
 131         {}      /* Terminator */
 132 };
 133
 134 static struct platform_device omap3_touchbook_lcd_device = {
 135         .name           = "omap3touchbook_lcd",
 136         .id             = -1,
 137 };
 138
 139 static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
 140         .ctrl_name      = "internal",
 141 };
 142
 143 static struct regulator_consumer_supply touchbook_vmmc1_supply = {
 144         .supply                 = "vmmc",
 145 };
 146
 147 static struct regulator_consumer_supply touchbook_vsim_supply = {
 148         .supply                 = "vmmc_aux",
 149 };
 150
 151 static struct gpio_led gpio_leds[];
 152
 153 static int touchbook_twl_gpio_setup(struct device *dev,
 154                 unsigned gpio, unsigned ngpio)
 155 {
 156         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 157                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 158                 mmc[0].gpio_wp = 23;
 159         } else {
 160                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 161         }
 162         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 163         mmc[0].gpio_cd = gpio + 0;
 164         twl4030_mmc_init(mmc);
 165
 166         /* link regulators to MMC adapters */
 167         touchbook_vmmc1_supply.dev = mmc[0].dev;
 168         touchbook_vsim_supply.dev = mmc[0].dev;
 169
 170         /* REVISIT: need ehci-omap hooks for external VBUS
 171          * power switch and overcurrent detect
 172          */
 173
 174         gpio_request(gpio + 1, "EHCI_nOC");
 175         gpio_direction_input(gpio + 1);
 176
 177         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 178         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 179         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 180
 181         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 182         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 183
 184         return 0;
 185 }
 186
 187 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 188         .gpio_base      = OMAP_MAX_GPIO_LINES,
 189         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 190         .irq_end        = TWL4030_GPIO_IRQ_END,
 191         .use_leds       = true,
 192         .pullups        = BIT(1),
 193         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 194                                 | BIT(15) | BIT(16) | BIT(17),
 195         .setup          = touchbook_twl_gpio_setup,
 196 };
 197
 198 static struct regulator_consumer_supply touchbook_vdac_supply = {
 199         .supply         = "vdac",
 200         .dev            = &omap3_touchbook_lcd_device.dev,
 201 };
 202
 203 static struct regulator_consumer_supply touchbook_vdvi_supply = {
 204         .supply         = "vdvi",
 205         .dev            = &omap3_touchbook_lcd_device.dev,
 206 };
 207
 208 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 209 static struct regulator_init_data touchbook_vmmc1 = {
 210         .constraints = {
 211                 .min_uV                 = 1850000,
 212                 .max_uV                 = 3150000,
 213                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 214                                         | REGULATOR_MODE_STANDBY,
 215                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 216                                         | REGULATOR_CHANGE_MODE
 217                                         | REGULATOR_CHANGE_STATUS,
 218         },
 219         .num_consumer_supplies  = 1,
 220         .consumer_supplies      = &touchbook_vmmc1_supply,
 221 };
 222
 223 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 224 static struct regulator_init_data touchbook_vsim = {
 225         .constraints = {
 226                 .min_uV                 = 1800000,
 227                 .max_uV                 = 3000000,
 228                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 229                                         | REGULATOR_MODE_STANDBY,
 230                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 231                                         | REGULATOR_CHANGE_MODE
 232                                         | REGULATOR_CHANGE_STATUS,
 233         },
 234         .num_consumer_supplies  = 1,
 235         .consumer_supplies      = &touchbook_vsim_supply,
 236 };
 237
 238 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 239 static struct regulator_init_data touchbook_vdac = {
 240         .constraints = {
 241                 .min_uV                 = 1800000,
 242                 .max_uV                 = 1800000,
 243                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 244                                         | REGULATOR_MODE_STANDBY,
 245                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 246                                         | REGULATOR_CHANGE_STATUS,
 247         },
 248         .num_consumer_supplies  = 1,
 249         .consumer_supplies      = &touchbook_vdac_supply,
 250 };
 251
 252 /* VPLL2 for digital video outputs */
 253 static struct regulator_init_data touchbook_vpll2 = {
 254         .constraints = {
 255                 .name                   = "VDVI",
 256                 .min_uV                 = 1800000,
 257                 .max_uV                 = 1800000,
 258                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 259                                         | REGULATOR_MODE_STANDBY,
 260                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 261                                         | REGULATOR_CHANGE_STATUS,
 262         },
 263         .num_consumer_supplies  = 1,
 264         .consumer_supplies      = &touchbook_vdvi_supply,
 265 };
 266
 267 static struct twl4030_usb_data touchbook_usb_data = {
 268         .usb_mode       = T2_USB_MODE_ULPI,
 269 };
 270
 271 static struct twl4030_codec_audio_data touchbook_audio_data = {
 272         .audio_mclk = 26000000,
 273 };
 274
 275 static struct twl4030_codec_data touchbook_codec_data = {
 276         .audio_mclk = 26000000,
 277         .audio = &touchbook_audio_data,
 278 };
 279
 280 static struct twl4030_platform_data touchbook_twldata = {
 281         .irq_base       = TWL4030_IRQ_BASE,
 282         .irq_end        = TWL4030_IRQ_END,
 283
 284         /* platform_data for children goes here */
 285         .usb            = &touchbook_usb_data,
 286         .gpio           = &touchbook_gpio_data,
 287         .codec          = &touchbook_codec_data,
 288         .vmmc1          = &touchbook_vmmc1,
 289         .vsim           = &touchbook_vsim,
 290         .vdac           = &touchbook_vdac,
 291         .vpll2          = &touchbook_vpll2,
 292 };
 293
 294 static struct i2c_board_info __initdata touchbook_i2c_boardinfo[] = {
 295         {
 296                 I2C_BOARD_INFO("twl4030", 0x48),
 297                 .flags = I2C_CLIENT_WAKE,
 298                 .irq = INT_34XX_SYS_NIRQ,
 299                 .platform_data = &touchbook_twldata,
 300         },
 301 };
 302
 303 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 304         {
 305                 I2C_BOARD_INFO("bq27200", 0x55),
 306         },
 307 };
 308
 309 static int __init omap3_touchbook_i2c_init(void)
 310 {
 311         /* Standard TouchBook bus */
 312         omap_register_i2c_bus(1, 2600, touchbook_i2c_boardinfo,
 313                         ARRAY_SIZE(touchbook_i2c_boardinfo));
 314
 315         /* Additional TouchBook bus */
 316         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 317                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 318
 319         return 0;
 320 }
 321
 322 static void __init omap3_ads7846_init(void)
 323 {
 324         if (gpio_request(OMAP3_TS_GPIO, "ads7846_pen_down")) {
 325                 printk(KERN_ERR "Failed to request GPIO %d for "
 326                                 "ads7846 pen down IRQ\n", OMAP3_TS_GPIO);
 327                 return;
 328         }
 329
 330         gpio_direction_input(OMAP3_TS_GPIO);
 331         omap_set_gpio_debounce(OMAP3_TS_GPIO, 1);
 332         omap_set_gpio_debounce_time(OMAP3_TS_GPIO, 0xa);
 333 }
 334
 335 static struct ads7846_platform_data ads7846_config = {
 336         .x_min                  = 100,
 337         .y_min                  = 265,
 338         .x_max                  = 3950,
 339         .y_max                  = 3750,
 340         .x_plate_ohms           = 40,
 341         .pressure_max           = 255,
 342         .debounce_max           = 10,
 343         .debounce_tol           = 5,
 344         .debounce_rep           = 1,
 345         .gpio_pendown           = OMAP3_TS_GPIO,
 346         .keep_vref_on           = 1,
 347 };
 348
 349 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 350         .turbo_mode     = 0,
 351         .single_channel = 1,    /* 0: slave, 1: master */
 352 };
 353
 354 static struct spi_board_info omap3_ads7846_spi_board_info[] __initdata = {
 355         {
 356                 .modalias               = "ads7846",
 357                 .bus_num                = 4,
 358                 .chip_select            = 0,
 359                 .max_speed_hz           = 1500000,
 360                 .controller_data        = &ads7846_mcspi_config,
 361                 .irq                    = OMAP_GPIO_IRQ(OMAP3_TS_GPIO),
 362                 .platform_data          = &ads7846_config,
 363         }
 364 };
 365
 366 static struct gpio_led gpio_leds[] = {
 367         {
 368                 .name                   = "touchbook::usr0",
 369                 .default_trigger        = "heartbeat",
 370                 .gpio                   = 150,
 371         },
 372         {
 373                 .name                   = "touchbook::usr1",
 374                 .default_trigger        = "mmc0",
 375                 .gpio                   = 149,
 376         },
 377         {
 378                 .name                   = "touchbook::pmu_stat",
 379                 .gpio                   = -EINVAL,      /* gets replaced */
 380                 .active_low             = true,
 381         },
 382 };
 383
 384 static struct gpio_led_platform_data gpio_led_info = {
 385         .leds           = gpio_leds,
 386         .num_leds       = ARRAY_SIZE(gpio_leds),
 387 };
 388
 389 static struct platform_device leds_gpio = {
 390         .name   = "leds-gpio",
 391         .id     = -1,
 392         .dev    = {
 393                 .platform_data  = &gpio_led_info,
 394         },
 395 };
 396
 397 static struct gpio_keys_button gpio_buttons[] = {
 398         {
 399                 .code                   = BTN_EXTRA,
 400                 .gpio                   = 7,
 401                 .desc                   = "user",
 402                 .wakeup                 = 1,
 403         },
 404         {
 405                 .code                   = KEY_POWER,
 406                 .gpio                   = 183,
 407                 .desc                   = "power",
 408                 .wakeup                 = 1,
 409         },
 410 };
 411
 412 static struct gpio_keys_platform_data gpio_key_info = {
 413         .buttons        = gpio_buttons,
 414         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 415 };
 416
 417 static struct platform_device keys_gpio = {
 418         .name   = "gpio-keys",
 419         .id     = -1,
 420         .dev    = {
 421                 .platform_data  = &gpio_key_info,
 422         },
 423 };
 424
 425 static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
 426         { OMAP_TAG_LCD,         &omap3_touchbook_lcd_config },
 427 };
 428
 429 #ifdef CONFIG_OMAP_MUX
 430 static struct omap_board_mux board_mux[] __initdata = {
 431         { .reg_offset = OMAP_MUX_TERMINATOR },
 432 };
 433 #else
 434 #define board_mux       NULL
 435 #endif
 436
 437 static void __init omap3_touchbook_init_irq(void)
 438 {
 439         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 440         omap_board_config = omap3_touchbook_config;
 441         omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
 442         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 443                              mt46h32m32lf6_sdrc_params);
 444         omap_init_irq();
 445 #ifdef CONFIG_OMAP_32K_TIMER
 446         omap2_gp_clockevent_set_gptimer(12);
 447 #endif
 448         omap_gpio_init();
 449 }
 450
 451 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 452         &omap3_touchbook_lcd_device,
 453         &leds_gpio,
 454         &keys_gpio,
 455 };
 456
 457 static void __init omap3touchbook_flash_init(void)
 458 {
 459         u8 cs = 0;
 460         u8 nandcs = GPMC_CS_NUM + 1;
 461
 462         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 463
 464         /* find out the chip-select on which NAND exists */
 465         while (cs < GPMC_CS_NUM) {
 466                 u32 ret = 0;
 467                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 468
 469                 if ((ret & 0xC00) == 0x800) {
 470                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 471                         if (nandcs > GPMC_CS_NUM)
 472                                 nandcs = cs;
 473                 }
 474                 cs++;
 475         }
 476
 477         if (nandcs > GPMC_CS_NUM) {
 478                 printk(KERN_INFO "NAND: Unable to find configuration "
 479                                  "in GPMC\n ");
 480                 return;
 481         }
 482
 483         if (nandcs < GPMC_CS_NUM) {
 484                 omap3touchbook_nand_data.cs = nandcs;
 485                 omap3touchbook_nand_data.gpmc_cs_baseaddr = (void *)
 486                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 487                 omap3touchbook_nand_data.gpmc_baseaddr =
 488                                                 (void *) (gpmc_base_add);
 489
 490                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 491                 if (platform_device_register(&omap3touchbook_nand_device) < 0)
 492                         printk(KERN_ERR "Unable to register NAND device\n");
 493         }
 494 }
 495
 496 static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 497
 498         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 499         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 500         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 501
 502         .phy_reset  = true,
 503         .reset_gpio_port[0]  = -EINVAL,
 504         .reset_gpio_port[1]  = 147,
 505         .reset_gpio_port[2]  = -EINVAL
 506 };
 507
 508 static void omap3_touchbook_poweroff(void)
 509 {
 510         int r;
 511
 512         r = gpio_request(TB_KILL_POWER_GPIO, "DVI reset");
 513         if (r < 0) {
 514                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 515                 return;
 516         }
 517
 518         gpio_direction_output(TB_KILL_POWER_GPIO, 0);
 519 }
 520
 521 static void __init early_touchbook_revision(char **p)
 522 {
 523         if (!*p)
 524                 return;
 525
 526         strict_strtoul(*p, 10, &touchbook_revision);
 527 }
 528 __early_param("tbr=", early_touchbook_revision);
 529
 530 static void __init omap3_touchbook_init(void)
 531 {
 532         pm_power_off = omap3_touchbook_poweroff;
 533
 534         omap3_touchbook_i2c_init();
 535         platform_add_devices(omap3_touchbook_devices,
 536                         ARRAY_SIZE(omap3_touchbook_devices));
 537         omap_serial_init();
 538
 539         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 540         gpio_request(176, "DVI_nPD");
 541         /* REVISIT leave DVI powered down until it's needed ... */
 542         gpio_direction_output(176, true);
 543
 544         /* Touchscreen and accelerometer */
 545         spi_register_board_info(omap3_ads7846_spi_board_info,
 546                                 ARRAY_SIZE(omap3_ads7846_spi_board_info));
 547         omap3_ads7846_init();
 548         usb_musb_init();
 549         usb_ehci_init(&ehci_pdata);
 550         omap3touchbook_flash_init();
 551
 552         /* Ensure SDRC pins are mux'd for self-refresh */
 553         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 554         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 555 }
 556
 557 static void __init omap3_touchbook_map_io(void)
 558 {
 559         omap2_set_globals_343x();
 560         omap2_map_common_io();
 561 }
 562
 563 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 564         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 565         .phys_io        = 0x48000000,
 566         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 567         .boot_params    = 0x80000100,
 568         .map_io         = omap3_touchbook_map_io,
 569         .init_irq       = omap3_touchbook_init_irq,
 570         .init_machine   = omap3_touchbook_init,
 571         .timer          = &omap_timer,
 572 MACHINE_END