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 "hsmmc.h"
  54
  55 #include <asm/setup.h>
  56
  57 #define NAND_BLOCK_SIZE         SZ_128K
  58
  59 #define OMAP3_AC_GPIO           136
  60 #define OMAP3_TS_GPIO           162
  61 #define TB_BL_PWM_TIMER         9
  62 #define TB_KILL_POWER_GPIO      168
  63
  64 unsigned long touchbook_revision;
  65
  66 static struct mtd_partition omap3touchbook_nand_partitions[] = {
  67         /* All the partition sizes are listed in terms of NAND block size */
  68         {
  69                 .name           = "X-Loader",
  70                 .offset         = 0,
  71                 .size           = 4 * NAND_BLOCK_SIZE,
  72                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  73         },
  74         {
  75                 .name           = "U-Boot",
  76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  77                 .size           = 15 * NAND_BLOCK_SIZE,
  78                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  79         },
  80         {
  81                 .name           = "U-Boot Env",
  82                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  83                 .size           = 1 * NAND_BLOCK_SIZE,
  84         },
  85         {
  86                 .name           = "Kernel",
  87                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  88                 .size           = 32 * NAND_BLOCK_SIZE,
  89         },
  90         {
  91                 .name           = "File System",
  92                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  93                 .size           = MTDPART_SIZ_FULL,
  94         },
  95 };
  96
  97 static struct omap_nand_platform_data omap3touchbook_nand_data = {
  98         .options        = NAND_BUSWIDTH_16,
  99         .parts          = omap3touchbook_nand_partitions,
 100         .nr_parts       = ARRAY_SIZE(omap3touchbook_nand_partitions),
 101         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
 102         .nand_setup     = NULL,
 103         .dev_ready      = NULL,
 104 };
 105
 106 #include "sdram-micron-mt46h32m32lf-6.h"
 107
 108 static struct omap2_hsmmc_info mmc[] = {
 109         {
 110                 .mmc            = 1,
 111                 .wires          = 8,
 112                 .gpio_wp        = 29,
 113         },
 114         {}      /* Terminator */
 115 };
 116
 117 static struct platform_device omap3_touchbook_lcd_device = {
 118         .name           = "omap3touchbook_lcd",
 119         .id             = -1,
 120 };
 121
 122 static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
 123         .ctrl_name      = "internal",
 124 };
 125
 126 static struct regulator_consumer_supply touchbook_vmmc1_supply = {
 127         .supply                 = "vmmc",
 128 };
 129
 130 static struct regulator_consumer_supply touchbook_vsim_supply = {
 131         .supply                 = "vmmc_aux",
 132 };
 133
 134 static struct gpio_led gpio_leds[];
 135
 136 static int touchbook_twl_gpio_setup(struct device *dev,
 137                 unsigned gpio, unsigned ngpio)
 138 {
 139         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 140                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 141                 mmc[0].gpio_wp = 23;
 142         } else {
 143                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 144         }
 145         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 146         mmc[0].gpio_cd = gpio + 0;
 147         omap2_hsmmc_init(mmc);
 148
 149         /* link regulators to MMC adapters */
 150         touchbook_vmmc1_supply.dev = mmc[0].dev;
 151         touchbook_vsim_supply.dev = mmc[0].dev;
 152
 153         /* REVISIT: need ehci-omap hooks for external VBUS
 154          * power switch and overcurrent detect
 155          */
 156
 157         gpio_request(gpio + 1, "EHCI_nOC");
 158         gpio_direction_input(gpio + 1);
 159
 160         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 161         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 162         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 163
 164         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 165         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 166
 167         return 0;
 168 }
 169
 170 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 171         .gpio_base      = OMAP_MAX_GPIO_LINES,
 172         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 173         .irq_end        = TWL4030_GPIO_IRQ_END,
 174         .use_leds       = true,
 175         .pullups        = BIT(1),
 176         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 177                                 | BIT(15) | BIT(16) | BIT(17),
 178         .setup          = touchbook_twl_gpio_setup,
 179 };
 180
 181 static struct regulator_consumer_supply touchbook_vdac_supply = {
 182         .supply         = "vdac",
 183         .dev            = &omap3_touchbook_lcd_device.dev,
 184 };
 185
 186 static struct regulator_consumer_supply touchbook_vdvi_supply = {
 187         .supply         = "vdvi",
 188         .dev            = &omap3_touchbook_lcd_device.dev,
 189 };
 190
 191 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 192 static struct regulator_init_data touchbook_vmmc1 = {
 193         .constraints = {
 194                 .min_uV                 = 1850000,
 195                 .max_uV                 = 3150000,
 196                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 197                                         | REGULATOR_MODE_STANDBY,
 198                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 199                                         | REGULATOR_CHANGE_MODE
 200                                         | REGULATOR_CHANGE_STATUS,
 201         },
 202         .num_consumer_supplies  = 1,
 203         .consumer_supplies      = &touchbook_vmmc1_supply,
 204 };
 205
 206 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 207 static struct regulator_init_data touchbook_vsim = {
 208         .constraints = {
 209                 .min_uV                 = 1800000,
 210                 .max_uV                 = 3000000,
 211                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 212                                         | REGULATOR_MODE_STANDBY,
 213                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 214                                         | REGULATOR_CHANGE_MODE
 215                                         | REGULATOR_CHANGE_STATUS,
 216         },
 217         .num_consumer_supplies  = 1,
 218         .consumer_supplies      = &touchbook_vsim_supply,
 219 };
 220
 221 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 222 static struct regulator_init_data touchbook_vdac = {
 223         .constraints = {
 224                 .min_uV                 = 1800000,
 225                 .max_uV                 = 1800000,
 226                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 227                                         | REGULATOR_MODE_STANDBY,
 228                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 229                                         | REGULATOR_CHANGE_STATUS,
 230         },
 231         .num_consumer_supplies  = 1,
 232         .consumer_supplies      = &touchbook_vdac_supply,
 233 };
 234
 235 /* VPLL2 for digital video outputs */
 236 static struct regulator_init_data touchbook_vpll2 = {
 237         .constraints = {
 238                 .name                   = "VDVI",
 239                 .min_uV                 = 1800000,
 240                 .max_uV                 = 1800000,
 241                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 242                                         | REGULATOR_MODE_STANDBY,
 243                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 244                                         | REGULATOR_CHANGE_STATUS,
 245         },
 246         .num_consumer_supplies  = 1,
 247         .consumer_supplies      = &touchbook_vdvi_supply,
 248 };
 249
 250 static struct twl4030_usb_data touchbook_usb_data = {
 251         .usb_mode       = T2_USB_MODE_ULPI,
 252 };
 253
 254 static struct twl4030_codec_audio_data touchbook_audio_data = {
 255         .audio_mclk = 26000000,
 256 };
 257
 258 static struct twl4030_codec_data touchbook_codec_data = {
 259         .audio_mclk = 26000000,
 260         .audio = &touchbook_audio_data,
 261 };
 262
 263 static struct twl4030_platform_data touchbook_twldata = {
 264         .irq_base       = TWL4030_IRQ_BASE,
 265         .irq_end        = TWL4030_IRQ_END,
 266
 267         /* platform_data for children goes here */
 268         .usb            = &touchbook_usb_data,
 269         .gpio           = &touchbook_gpio_data,
 270         .codec          = &touchbook_codec_data,
 271         .vmmc1          = &touchbook_vmmc1,
 272         .vsim           = &touchbook_vsim,
 273         .vdac           = &touchbook_vdac,
 274         .vpll2          = &touchbook_vpll2,
 275 };
 276
 277 static struct i2c_board_info __initdata touchbook_i2c_boardinfo[] = {
 278         {
 279                 I2C_BOARD_INFO("twl4030", 0x48),
 280                 .flags = I2C_CLIENT_WAKE,
 281                 .irq = INT_34XX_SYS_NIRQ,
 282                 .platform_data = &touchbook_twldata,
 283         },
 284 };
 285
 286 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 287         {
 288                 I2C_BOARD_INFO("bq27200", 0x55),
 289         },
 290 };
 291
 292 static int __init omap3_touchbook_i2c_init(void)
 293 {
 294         /* Standard TouchBook bus */
 295         omap_register_i2c_bus(1, 2600, touchbook_i2c_boardinfo,
 296                         ARRAY_SIZE(touchbook_i2c_boardinfo));
 297
 298         /* Additional TouchBook bus */
 299         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 300                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 301
 302         return 0;
 303 }
 304
 305 static void __init omap3_ads7846_init(void)
 306 {
 307         if (gpio_request(OMAP3_TS_GPIO, "ads7846_pen_down")) {
 308                 printk(KERN_ERR "Failed to request GPIO %d for "
 309                                 "ads7846 pen down IRQ\n", OMAP3_TS_GPIO);
 310                 return;
 311         }
 312
 313         gpio_direction_input(OMAP3_TS_GPIO);
 314         gpio_set_debounce(OMAP3_TS_GPIO, 310);
 315 }
 316
 317 static struct ads7846_platform_data ads7846_config = {
 318         .x_min                  = 100,
 319         .y_min                  = 265,
 320         .x_max                  = 3950,
 321         .y_max                  = 3750,
 322         .x_plate_ohms           = 40,
 323         .pressure_max           = 255,
 324         .debounce_max           = 10,
 325         .debounce_tol           = 5,
 326         .debounce_rep           = 1,
 327         .gpio_pendown           = OMAP3_TS_GPIO,
 328         .keep_vref_on           = 1,
 329 };
 330
 331 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 332         .turbo_mode     = 0,
 333         .single_channel = 1,    /* 0: slave, 1: master */
 334 };
 335
 336 static struct spi_board_info omap3_ads7846_spi_board_info[] __initdata = {
 337         {
 338                 .modalias               = "ads7846",
 339                 .bus_num                = 4,
 340                 .chip_select            = 0,
 341                 .max_speed_hz           = 1500000,
 342                 .controller_data        = &ads7846_mcspi_config,
 343                 .irq                    = OMAP_GPIO_IRQ(OMAP3_TS_GPIO),
 344                 .platform_data          = &ads7846_config,
 345         }
 346 };
 347
 348 static struct gpio_led gpio_leds[] = {
 349         {
 350                 .name                   = "touchbook::usr0",
 351                 .default_trigger        = "heartbeat",
 352                 .gpio                   = 150,
 353         },
 354         {
 355                 .name                   = "touchbook::usr1",
 356                 .default_trigger        = "mmc0",
 357                 .gpio                   = 149,
 358         },
 359         {
 360                 .name                   = "touchbook::pmu_stat",
 361                 .gpio                   = -EINVAL,      /* gets replaced */
 362                 .active_low             = true,
 363         },
 364 };
 365
 366 static struct gpio_led_platform_data gpio_led_info = {
 367         .leds           = gpio_leds,
 368         .num_leds       = ARRAY_SIZE(gpio_leds),
 369 };
 370
 371 static struct platform_device leds_gpio = {
 372         .name   = "leds-gpio",
 373         .id     = -1,
 374         .dev    = {
 375                 .platform_data  = &gpio_led_info,
 376         },
 377 };
 378
 379 static struct gpio_keys_button gpio_buttons[] = {
 380         {
 381                 .code                   = BTN_EXTRA,
 382                 .gpio                   = 7,
 383                 .desc                   = "user",
 384                 .wakeup                 = 1,
 385         },
 386         {
 387                 .code                   = KEY_POWER,
 388                 .gpio                   = 183,
 389                 .desc                   = "power",
 390                 .wakeup                 = 1,
 391         },
 392 };
 393
 394 static struct gpio_keys_platform_data gpio_key_info = {
 395         .buttons        = gpio_buttons,
 396         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 397 };
 398
 399 static struct platform_device keys_gpio = {
 400         .name   = "gpio-keys",
 401         .id     = -1,
 402         .dev    = {
 403                 .platform_data  = &gpio_key_info,
 404         },
 405 };
 406
 407 static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
 408         { OMAP_TAG_LCD,         &omap3_touchbook_lcd_config },
 409 };
 410
 411 #ifdef CONFIG_OMAP_MUX
 412 static struct omap_board_mux board_mux[] __initdata = {
 413         { .reg_offset = OMAP_MUX_TERMINATOR },
 414 };
 415 #else
 416 #define board_mux       NULL
 417 #endif
 418
 419 static void __init omap3_touchbook_init_irq(void)
 420 {
 421         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 422         omap_board_config = omap3_touchbook_config;
 423         omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
 424         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 425                              mt46h32m32lf6_sdrc_params);
 426         omap_init_irq();
 427 #ifdef CONFIG_OMAP_32K_TIMER
 428         omap2_gp_clockevent_set_gptimer(12);
 429 #endif
 430         omap_gpio_init();
 431 }
 432
 433 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 434         &omap3_touchbook_lcd_device,
 435         &leds_gpio,
 436         &keys_gpio,
 437 };
 438
 439 static void __init omap3touchbook_flash_init(void)
 440 {
 441         u8 cs = 0;
 442         u8 nandcs = GPMC_CS_NUM + 1;
 443
 444         /* find out the chip-select on which NAND exists */
 445         while (cs < GPMC_CS_NUM) {
 446                 u32 ret = 0;
 447                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 448
 449                 if ((ret & 0xC00) == 0x800) {
 450                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 451                         if (nandcs > GPMC_CS_NUM)
 452                                 nandcs = cs;
 453                 }
 454                 cs++;
 455         }
 456
 457         if (nandcs > GPMC_CS_NUM) {
 458                 printk(KERN_INFO "NAND: Unable to find configuration "
 459                                  "in GPMC\n ");
 460                 return;
 461         }
 462
 463         if (nandcs < GPMC_CS_NUM) {
 464                 omap3touchbook_nand_data.cs = nandcs;
 465
 466                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 467                 if (gpmc_nand_init(&omap3touchbook_nand_data) < 0)
 468                         printk(KERN_ERR "Unable to register NAND device\n");
 469         }
 470 }
 471
 472 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 473
 474         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 475         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 476         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 477
 478         .phy_reset  = true,
 479         .reset_gpio_port[0]  = -EINVAL,
 480         .reset_gpio_port[1]  = 147,
 481         .reset_gpio_port[2]  = -EINVAL
 482 };
 483
 484 static void omap3_touchbook_poweroff(void)
 485 {
 486         int r;
 487
 488         r = gpio_request(TB_KILL_POWER_GPIO, "DVI reset");
 489         if (r < 0) {
 490                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 491                 return;
 492         }
 493
 494         gpio_direction_output(TB_KILL_POWER_GPIO, 0);
 495 }
 496
 497 static int __init early_touchbook_revision(char *p)
 498 {
 499         if (!p)
 500                 return 0;
 501
 502         return strict_strtoul(p, 10, &touchbook_revision);
 503 }
 504 early_param("tbr", early_touchbook_revision);
 505
 506 static struct omap_musb_board_data musb_board_data = {
 507         .interface_type         = MUSB_INTERFACE_ULPI,
 508         .mode                   = MUSB_OTG,
 509         .power                  = 100,
 510 };
 511
 512 static void __init omap3_touchbook_init(void)
 513 {
 514         pm_power_off = omap3_touchbook_poweroff;
 515
 516         omap3_touchbook_i2c_init();
 517         platform_add_devices(omap3_touchbook_devices,
 518                         ARRAY_SIZE(omap3_touchbook_devices));
 519         omap_serial_init();
 520
 521         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 522         gpio_request(176, "DVI_nPD");
 523         /* REVISIT leave DVI powered down until it's needed ... */
 524         gpio_direction_output(176, true);
 525
 526         /* Touchscreen and accelerometer */
 527         spi_register_board_info(omap3_ads7846_spi_board_info,
 528                                 ARRAY_SIZE(omap3_ads7846_spi_board_info));
 529         omap3_ads7846_init();
 530         usb_musb_init(&musb_board_data);
 531         usb_ehci_init(&ehci_pdata);
 532         omap3touchbook_flash_init();
 533
 534         /* Ensure SDRC pins are mux'd for self-refresh */
 535         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 536         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 537 }
 538
 539 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 540         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 541         .boot_params    = 0x80000100,
 542         .map_io         = omap3_map_io,
 543         .reserve        = omap_reserve,
 544         .init_irq       = omap3_touchbook_init_irq,
 545         .init_machine   = omap3_touchbook_init,
 546         .timer          = &omap_timer,
 547 MACHINE_END