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 #include <linux/mmc/host.h>
  31
  32 #include <plat/mcspi.h>
  33 #include <linux/spi/spi.h>
  34
  35 #include <linux/spi/ads7846.h>
  36
  37 #include <linux/regulator/machine.h>
  38 #include <linux/i2c/twl.h>
  39
  40 #include <mach/hardware.h>
  41 #include <asm/mach-types.h>
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/map.h>
  44 #include <asm/mach/flash.h>
  45
  46 #include <plat/board.h>
  47 #include <plat/common.h>
  48 #include <plat/gpmc.h>
  49 #include <plat/nand.h>
  50 #include <plat/usb.h>
  51
  52 #include "mux.h"
  53 #include "hsmmc.h"
  54 #include "timer-gp.h"
  55
  56 #include <asm/setup.h>
  57
  58 #define NAND_BLOCK_SIZE         SZ_128K
  59
  60 #define OMAP3_AC_GPIO           136
  61 #define OMAP3_TS_GPIO           162
  62 #define TB_BL_PWM_TIMER         9
  63 #define TB_KILL_POWER_GPIO      168
  64
  65 static unsigned long touchbook_revision;
  66
  67 static struct mtd_partition omap3touchbook_nand_partitions[] = {
  68         /* All the partition sizes are listed in terms of NAND block size */
  69         {
  70                 .name           = "X-Loader",
  71                 .offset         = 0,
  72                 .size           = 4 * NAND_BLOCK_SIZE,
  73                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  74         },
  75         {
  76                 .name           = "U-Boot",
  77                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  78                 .size           = 15 * NAND_BLOCK_SIZE,
  79                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  80         },
  81         {
  82                 .name           = "U-Boot Env",
  83                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  84                 .size           = 1 * NAND_BLOCK_SIZE,
  85         },
  86         {
  87                 .name           = "Kernel",
  88                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  89                 .size           = 32 * NAND_BLOCK_SIZE,
  90         },
  91         {
  92                 .name           = "File System",
  93                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  94                 .size           = MTDPART_SIZ_FULL,
  95         },
  96 };
  97
  98 static struct omap_nand_platform_data omap3touchbook_nand_data = {
  99         .options        = NAND_BUSWIDTH_16,
 100         .parts          = omap3touchbook_nand_partitions,
 101         .nr_parts       = ARRAY_SIZE(omap3touchbook_nand_partitions),
 102         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
 103         .nand_setup     = NULL,
 104         .dev_ready      = NULL,
 105 };
 106
 107 #include "sdram-micron-mt46h32m32lf-6.h"
 108
 109 static struct omap2_hsmmc_info mmc[] = {
 110         {
 111                 .mmc            = 1,
 112                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 113                 .gpio_wp        = 29,
 114         },
 115         {}      /* Terminator */
 116 };
 117
 118 static struct platform_device omap3_touchbook_lcd_device = {
 119         .name           = "omap3touchbook_lcd",
 120         .id             = -1,
 121 };
 122
 123 static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
 124         .ctrl_name      = "internal",
 125 };
 126
 127 static struct regulator_consumer_supply touchbook_vmmc1_supply = {
 128         .supply                 = "vmmc",
 129 };
 130
 131 static struct regulator_consumer_supply touchbook_vsim_supply = {
 132         .supply                 = "vmmc_aux",
 133 };
 134
 135 static struct gpio_led gpio_leds[];
 136
 137 static int touchbook_twl_gpio_setup(struct device *dev,
 138                 unsigned gpio, unsigned ngpio)
 139 {
 140         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 141                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 142                 mmc[0].gpio_wp = 23;
 143         } else {
 144                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 145         }
 146         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 147         mmc[0].gpio_cd = gpio + 0;
 148         omap2_hsmmc_init(mmc);
 149
 150         /* link regulators to MMC adapters */
 151         touchbook_vmmc1_supply.dev = mmc[0].dev;
 152         touchbook_vsim_supply.dev = mmc[0].dev;
 153
 154         /* REVISIT: need ehci-omap hooks for external VBUS
 155          * power switch and overcurrent detect
 156          */
 157
 158         gpio_request(gpio + 1, "EHCI_nOC");
 159         gpio_direction_input(gpio + 1);
 160
 161         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 162         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 163         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 164
 165         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 166         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 167
 168         return 0;
 169 }
 170
 171 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 172         .gpio_base      = OMAP_MAX_GPIO_LINES,
 173         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 174         .irq_end        = TWL4030_GPIO_IRQ_END,
 175         .use_leds       = true,
 176         .pullups        = BIT(1),
 177         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 178                                 | BIT(15) | BIT(16) | BIT(17),
 179         .setup          = touchbook_twl_gpio_setup,
 180 };
 181
 182 static struct regulator_consumer_supply touchbook_vdac_supply = {
 183         .supply         = "vdac",
 184         .dev            = &omap3_touchbook_lcd_device.dev,
 185 };
 186
 187 static struct regulator_consumer_supply touchbook_vdvi_supply = {
 188         .supply         = "vdvi",
 189         .dev            = &omap3_touchbook_lcd_device.dev,
 190 };
 191
 192 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 193 static struct regulator_init_data touchbook_vmmc1 = {
 194         .constraints = {
 195                 .min_uV                 = 1850000,
 196                 .max_uV                 = 3150000,
 197                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 198                                         | REGULATOR_MODE_STANDBY,
 199                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 200                                         | REGULATOR_CHANGE_MODE
 201                                         | REGULATOR_CHANGE_STATUS,
 202         },
 203         .num_consumer_supplies  = 1,
 204         .consumer_supplies      = &touchbook_vmmc1_supply,
 205 };
 206
 207 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 208 static struct regulator_init_data touchbook_vsim = {
 209         .constraints = {
 210                 .min_uV                 = 1800000,
 211                 .max_uV                 = 3000000,
 212                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 213                                         | REGULATOR_MODE_STANDBY,
 214                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 215                                         | REGULATOR_CHANGE_MODE
 216                                         | REGULATOR_CHANGE_STATUS,
 217         },
 218         .num_consumer_supplies  = 1,
 219         .consumer_supplies      = &touchbook_vsim_supply,
 220 };
 221
 222 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 223 static struct regulator_init_data touchbook_vdac = {
 224         .constraints = {
 225                 .min_uV                 = 1800000,
 226                 .max_uV                 = 1800000,
 227                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 228                                         | REGULATOR_MODE_STANDBY,
 229                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 230                                         | REGULATOR_CHANGE_STATUS,
 231         },
 232         .num_consumer_supplies  = 1,
 233         .consumer_supplies      = &touchbook_vdac_supply,
 234 };
 235
 236 /* VPLL2 for digital video outputs */
 237 static struct regulator_init_data touchbook_vpll2 = {
 238         .constraints = {
 239                 .name                   = "VDVI",
 240                 .min_uV                 = 1800000,
 241                 .max_uV                 = 1800000,
 242                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 243                                         | REGULATOR_MODE_STANDBY,
 244                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 245                                         | REGULATOR_CHANGE_STATUS,
 246         },
 247         .num_consumer_supplies  = 1,
 248         .consumer_supplies      = &touchbook_vdvi_supply,
 249 };
 250
 251 static struct twl4030_usb_data touchbook_usb_data = {
 252         .usb_mode       = T2_USB_MODE_ULPI,
 253 };
 254
 255 static struct twl4030_codec_audio_data touchbook_audio_data;
 256
 257 static struct twl4030_codec_data touchbook_codec_data = {
 258         .audio_mclk = 26000000,
 259         .audio = &touchbook_audio_data,
 260 };
 261
 262 static struct twl4030_platform_data touchbook_twldata = {
 263         .irq_base       = TWL4030_IRQ_BASE,
 264         .irq_end        = TWL4030_IRQ_END,
 265
 266         /* platform_data for children goes here */
 267         .usb            = &touchbook_usb_data,
 268         .gpio           = &touchbook_gpio_data,
 269         .codec          = &touchbook_codec_data,
 270         .vmmc1          = &touchbook_vmmc1,
 271         .vsim           = &touchbook_vsim,
 272         .vdac           = &touchbook_vdac,
 273         .vpll2          = &touchbook_vpll2,
 274 };
 275
 276 static struct i2c_board_info __initdata touchbook_i2c_boardinfo[] = {
 277         {
 278                 I2C_BOARD_INFO("twl4030", 0x48),
 279                 .flags = I2C_CLIENT_WAKE,
 280                 .irq = INT_34XX_SYS_NIRQ,
 281                 .platform_data = &touchbook_twldata,
 282         },
 283 };
 284
 285 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 286         {
 287                 I2C_BOARD_INFO("bq27200", 0x55),
 288         },
 289 };
 290
 291 static int __init omap3_touchbook_i2c_init(void)
 292 {
 293         /* Standard TouchBook bus */
 294         omap_register_i2c_bus(1, 2600, touchbook_i2c_boardinfo,
 295                         ARRAY_SIZE(touchbook_i2c_boardinfo));
 296
 297         /* Additional TouchBook bus */
 298         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 299                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 300
 301         return 0;
 302 }
 303
 304 static void __init omap3_ads7846_init(void)
 305 {
 306         if (gpio_request(OMAP3_TS_GPIO, "ads7846_pen_down")) {
 307                 printk(KERN_ERR "Failed to request GPIO %d for "
 308                                 "ads7846 pen down IRQ\n", OMAP3_TS_GPIO);
 309                 return;
 310         }
 311
 312         gpio_direction_input(OMAP3_TS_GPIO);
 313         gpio_set_debounce(OMAP3_TS_GPIO, 310);
 314 }
 315
 316 static struct ads7846_platform_data ads7846_config = {
 317         .x_min                  = 100,
 318         .y_min                  = 265,
 319         .x_max                  = 3950,
 320         .y_max                  = 3750,
 321         .x_plate_ohms           = 40,
 322         .pressure_max           = 255,
 323         .debounce_max           = 10,
 324         .debounce_tol           = 5,
 325         .debounce_rep           = 1,
 326         .gpio_pendown           = OMAP3_TS_GPIO,
 327         .keep_vref_on           = 1,
 328 };
 329
 330 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 331         .turbo_mode     = 0,
 332         .single_channel = 1,    /* 0: slave, 1: master */
 333 };
 334
 335 static struct spi_board_info omap3_ads7846_spi_board_info[] __initdata = {
 336         {
 337                 .modalias               = "ads7846",
 338                 .bus_num                = 4,
 339                 .chip_select            = 0,
 340                 .max_speed_hz           = 1500000,
 341                 .controller_data        = &ads7846_mcspi_config,
 342                 .irq                    = OMAP_GPIO_IRQ(OMAP3_TS_GPIO),
 343                 .platform_data          = &ads7846_config,
 344         }
 345 };
 346
 347 static struct gpio_led gpio_leds[] = {
 348         {
 349                 .name                   = "touchbook::usr0",
 350                 .default_trigger        = "heartbeat",
 351                 .gpio                   = 150,
 352         },
 353         {
 354                 .name                   = "touchbook::usr1",
 355                 .default_trigger        = "mmc0",
 356                 .gpio                   = 149,
 357         },
 358         {
 359                 .name                   = "touchbook::pmu_stat",
 360                 .gpio                   = -EINVAL,      /* gets replaced */
 361                 .active_low             = true,
 362         },
 363 };
 364
 365 static struct gpio_led_platform_data gpio_led_info = {
 366         .leds           = gpio_leds,
 367         .num_leds       = ARRAY_SIZE(gpio_leds),
 368 };
 369
 370 static struct platform_device leds_gpio = {
 371         .name   = "leds-gpio",
 372         .id     = -1,
 373         .dev    = {
 374                 .platform_data  = &gpio_led_info,
 375         },
 376 };
 377
 378 static struct gpio_keys_button gpio_buttons[] = {
 379         {
 380                 .code                   = BTN_EXTRA,
 381                 .gpio                   = 7,
 382                 .desc                   = "user",
 383                 .wakeup                 = 1,
 384         },
 385         {
 386                 .code                   = KEY_POWER,
 387                 .gpio                   = 183,
 388                 .desc                   = "power",
 389                 .wakeup                 = 1,
 390         },
 391 };
 392
 393 static struct gpio_keys_platform_data gpio_key_info = {
 394         .buttons        = gpio_buttons,
 395         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 396 };
 397
 398 static struct platform_device keys_gpio = {
 399         .name   = "gpio-keys",
 400         .id     = -1,
 401         .dev    = {
 402                 .platform_data  = &gpio_key_info,
 403         },
 404 };
 405
 406 static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
 407         { OMAP_TAG_LCD,         &omap3_touchbook_lcd_config },
 408 };
 409
 410 #ifdef CONFIG_OMAP_MUX
 411 static struct omap_board_mux board_mux[] __initdata = {
 412         { .reg_offset = OMAP_MUX_TERMINATOR },
 413 };
 414 #endif
 415
 416 static void __init omap3_touchbook_init_early(void)
 417 {
 418         omap2_init_common_infrastructure();
 419         omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
 420                                   mt46h32m32lf6_sdrc_params);
 421 }
 422
 423 static void __init omap3_touchbook_init_irq(void)
 424 {
 425         omap_init_irq();
 426 #ifdef CONFIG_OMAP_32K_TIMER
 427         omap2_gp_clockevent_set_gptimer(12);
 428 #endif
 429 }
 430
 431 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 432         &omap3_touchbook_lcd_device,
 433         &leds_gpio,
 434         &keys_gpio,
 435 };
 436
 437 static void __init omap3touchbook_flash_init(void)
 438 {
 439         u8 cs = 0;
 440         u8 nandcs = GPMC_CS_NUM + 1;
 441
 442         /* find out the chip-select on which NAND exists */
 443         while (cs < GPMC_CS_NUM) {
 444                 u32 ret = 0;
 445                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 446
 447                 if ((ret & 0xC00) == 0x800) {
 448                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 449                         if (nandcs > GPMC_CS_NUM)
 450                                 nandcs = cs;
 451                 }
 452                 cs++;
 453         }
 454
 455         if (nandcs > GPMC_CS_NUM) {
 456                 printk(KERN_INFO "NAND: Unable to find configuration "
 457                                  "in GPMC\n ");
 458                 return;
 459         }
 460
 461         if (nandcs < GPMC_CS_NUM) {
 462                 omap3touchbook_nand_data.cs = nandcs;
 463
 464                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 465                 if (gpmc_nand_init(&omap3touchbook_nand_data) < 0)
 466                         printk(KERN_ERR "Unable to register NAND device\n");
 467         }
 468 }
 469
 470 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 471
 472         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 473         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 474         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 475
 476         .phy_reset  = true,
 477         .reset_gpio_port[0]  = -EINVAL,
 478         .reset_gpio_port[1]  = 147,
 479         .reset_gpio_port[2]  = -EINVAL
 480 };
 481
 482 static void omap3_touchbook_poweroff(void)
 483 {
 484         int r;
 485
 486         r = gpio_request(TB_KILL_POWER_GPIO, "DVI reset");
 487         if (r < 0) {
 488                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 489                 return;
 490         }
 491
 492         gpio_direction_output(TB_KILL_POWER_GPIO, 0);
 493 }
 494
 495 static int __init early_touchbook_revision(char *p)
 496 {
 497         if (!p)
 498                 return 0;
 499
 500         return strict_strtoul(p, 10, &touchbook_revision);
 501 }
 502 early_param("tbr", early_touchbook_revision);
 503
 504 static struct omap_musb_board_data musb_board_data = {
 505         .interface_type         = MUSB_INTERFACE_ULPI,
 506         .mode                   = MUSB_OTG,
 507         .power                  = 100,
 508 };
 509
 510 static void __init omap3_touchbook_init(void)
 511 {
 512         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 513         omap_board_config = omap3_touchbook_config;
 514         omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
 515
 516         pm_power_off = omap3_touchbook_poweroff;
 517
 518         omap3_touchbook_i2c_init();
 519         platform_add_devices(omap3_touchbook_devices,
 520                         ARRAY_SIZE(omap3_touchbook_devices));
 521         omap_serial_init();
 522
 523         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 524         gpio_request(176, "DVI_nPD");
 525         /* REVISIT leave DVI powered down until it's needed ... */
 526         gpio_direction_output(176, true);
 527
 528         /* Touchscreen and accelerometer */
 529         spi_register_board_info(omap3_ads7846_spi_board_info,
 530                                 ARRAY_SIZE(omap3_ads7846_spi_board_info));
 531         omap3_ads7846_init();
 532         usb_musb_init(&musb_board_data);
 533         usbhs_init(&usbhs_bdata);
 534         omap3touchbook_flash_init();
 535
 536         /* Ensure SDRC pins are mux'd for self-refresh */
 537         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 538         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 539 }
 540
 541 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 542         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 543         .boot_params    = 0x80000100,
 544         .reserve        = omap_reserve,
 545         .map_io         = omap3_map_io,
 546         .init_early     = omap3_touchbook_init_early,
 547         .init_irq       = omap3_touchbook_init_irq,
 548         .init_machine   = omap3_touchbook_init,
 549         .timer          = &omap_timer,
 550 MACHINE_END