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 #include <linux/usb/phy.h>
  32
  33 #include <linux/platform_data/spi-omap2-mcspi.h>
  34 #include <linux/spi/spi.h>
  35
  36 #include <linux/spi/ads7846.h>
  37
  38 #include <linux/regulator/machine.h>
  39 #include <linux/i2c/twl.h>
  40
  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 #include <asm/system_info.h>
  46
  47 #include "common.h"
  48 #include "gpmc.h"
  49 #include <linux/platform_data/mtd-nand-omap2.h>
  50
  51 #include "mux.h"
  52 #include "hsmmc.h"
  53 #include "board-flash.h"
  54 #include "common-board-devices.h"
  55
  56 #include <asm/setup.h>
  57
  58 #define OMAP3_AC_GPIO           136
  59 #define OMAP3_TS_GPIO           162
  60 #define TB_BL_PWM_TIMER         9
  61 #define TB_KILL_POWER_GPIO      168
  62
  63 #define NAND_CS                 0
  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 #include "sdram-micron-mt46h32m32lf-6.h"
  99
 100 static struct omap2_hsmmc_info mmc[] = {
 101         {
 102                 .mmc            = 1,
 103                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 104                 .gpio_wp        = 29,
 105                 .deferred       = true,
 106         },
 107         {}      /* Terminator */
 108 };
 109
 110 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
 111         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 112 };
 113
 114 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
 115         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 116 };
 117
 118 static struct gpio_led gpio_leds[];
 119
 120 static int touchbook_twl_gpio_setup(struct device *dev,
 121                 unsigned gpio, unsigned ngpio)
 122 {
 123         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 124         mmc[0].gpio_cd = gpio + 0;
 125         omap_hsmmc_late_init(mmc);
 126
 127         /* REVISIT: need ehci-omap hooks for external VBUS
 128          * power switch and overcurrent detect
 129          */
 130         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 131
 132         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 133         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 134                          "nEN_USB_PWR");
 135
 136         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 137         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 138
 139         return 0;
 140 }
 141
 142 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 143         .use_leds       = true,
 144         .pullups        = BIT(1),
 145         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 146                                 | BIT(15) | BIT(16) | BIT(17),
 147         .setup          = touchbook_twl_gpio_setup,
 148 };
 149
 150 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 151 {
 152         .supply         = "vdac",
 153 },
 154 };
 155
 156 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 157 {
 158         .supply         = "vdvi",
 159 },
 160 };
 161
 162 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 163 static struct regulator_init_data touchbook_vmmc1 = {
 164         .constraints = {
 165                 .min_uV                 = 1850000,
 166                 .max_uV                 = 3150000,
 167                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 168                                         | REGULATOR_MODE_STANDBY,
 169                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 170                                         | REGULATOR_CHANGE_MODE
 171                                         | REGULATOR_CHANGE_STATUS,
 172         },
 173         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
 174         .consumer_supplies      = touchbook_vmmc1_supply,
 175 };
 176
 177 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 178 static struct regulator_init_data touchbook_vsim = {
 179         .constraints = {
 180                 .min_uV                 = 1800000,
 181                 .max_uV                 = 3000000,
 182                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 183                                         | REGULATOR_MODE_STANDBY,
 184                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 185                                         | REGULATOR_CHANGE_MODE
 186                                         | REGULATOR_CHANGE_STATUS,
 187         },
 188         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 189         .consumer_supplies      = touchbook_vsim_supply,
 190 };
 191
 192 static struct twl4030_platform_data touchbook_twldata = {
 193         /* platform_data for children goes here */
 194         .gpio           = &touchbook_gpio_data,
 195         .vmmc1          = &touchbook_vmmc1,
 196         .vsim           = &touchbook_vsim,
 197 };
 198
 199 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 200         {
 201                 I2C_BOARD_INFO("bq27200", 0x55),
 202         },
 203 };
 204
 205 static int __init omap3_touchbook_i2c_init(void)
 206 {
 207         /* Standard TouchBook bus */
 208         omap3_pmic_get_config(&touchbook_twldata,
 209                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 210                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 211
 212         touchbook_twldata.vdac->num_consumer_supplies =
 213                                         ARRAY_SIZE(touchbook_vdac_supply);
 214         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 215
 216         touchbook_twldata.vpll2->constraints.name = "VDVI";
 217         touchbook_twldata.vpll2->num_consumer_supplies =
 218                                         ARRAY_SIZE(touchbook_vdvi_supply);
 219         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 220
 221         omap3_pmic_init("twl4030", &touchbook_twldata);
 222         /* Additional TouchBook bus */
 223         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 224                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 225
 226         return 0;
 227 }
 228
 229 static struct ads7846_platform_data ads7846_pdata = {
 230         .x_min                  = 100,
 231         .y_min                  = 265,
 232         .x_max                  = 3950,
 233         .y_max                  = 3750,
 234         .x_plate_ohms           = 40,
 235         .pressure_max           = 255,
 236         .debounce_max           = 10,
 237         .debounce_tol           = 5,
 238         .debounce_rep           = 1,
 239         .gpio_pendown           = OMAP3_TS_GPIO,
 240         .keep_vref_on           = 1,
 241 };
 242
 243 static struct gpio_led gpio_leds[] = {
 244         {
 245                 .name                   = "touchbook::usr0",
 246                 .default_trigger        = "heartbeat",
 247                 .gpio                   = 150,
 248         },
 249         {
 250                 .name                   = "touchbook::usr1",
 251                 .default_trigger        = "mmc0",
 252                 .gpio                   = 149,
 253         },
 254         {
 255                 .name                   = "touchbook::pmu_stat",
 256                 .gpio                   = -EINVAL,      /* gets replaced */
 257                 .active_low             = true,
 258         },
 259 };
 260
 261 static struct gpio_led_platform_data gpio_led_info = {
 262         .leds           = gpio_leds,
 263         .num_leds       = ARRAY_SIZE(gpio_leds),
 264 };
 265
 266 static struct platform_device leds_gpio = {
 267         .name   = "leds-gpio",
 268         .id     = -1,
 269         .dev    = {
 270                 .platform_data  = &gpio_led_info,
 271         },
 272 };
 273
 274 static struct gpio_keys_button gpio_buttons[] = {
 275         {
 276                 .code                   = BTN_EXTRA,
 277                 .gpio                   = 7,
 278                 .desc                   = "user",
 279                 .wakeup                 = 1,
 280         },
 281         {
 282                 .code                   = KEY_POWER,
 283                 .gpio                   = 183,
 284                 .desc                   = "power",
 285                 .wakeup                 = 1,
 286         },
 287 };
 288
 289 static struct gpio_keys_platform_data gpio_key_info = {
 290         .buttons        = gpio_buttons,
 291         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 292 };
 293
 294 static struct platform_device keys_gpio = {
 295         .name   = "gpio-keys",
 296         .id     = -1,
 297         .dev    = {
 298                 .platform_data  = &gpio_key_info,
 299         },
 300 };
 301
 302 #ifdef CONFIG_OMAP_MUX
 303 static struct omap_board_mux board_mux[] __initdata = {
 304         { .reg_offset = OMAP_MUX_TERMINATOR },
 305 };
 306 #endif
 307
 308 static struct usbhs_phy_data phy_data[] __initdata = {
 309         {
 310                 .port = 2,
 311                 .reset_gpio = 147,
 312                 .vcc_gpio = -EINVAL,
 313         },
 314 };
 315
 316 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 317         &leds_gpio,
 318         &keys_gpio,
 319 };
 320
 321 static struct usbhs_omap_platform_data usbhs_bdata __initdata = {
 322         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 323         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 324 };
 325
 326 static void omap3_touchbook_poweroff(void)
 327 {
 328         int pwr_off = TB_KILL_POWER_GPIO;
 329
 330         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 331                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 332 }
 333
 334 static int __init early_touchbook_revision(char *p)
 335 {
 336         if (!p)
 337                 return 0;
 338
 339         return kstrtoul(p, 10, &touchbook_revision);
 340 }
 341 early_param("tbr", early_touchbook_revision);
 342
 343 static void __init omap3_touchbook_init(void)
 344 {
 345         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 346
 347         pm_power_off = omap3_touchbook_poweroff;
 348
 349         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 350                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 351                 mmc[0].gpio_wp = 23;
 352         } else {
 353                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 354         }
 355         omap_hsmmc_init(mmc);
 356
 357         omap3_touchbook_i2c_init();
 358         platform_add_devices(omap3_touchbook_devices,
 359                         ARRAY_SIZE(omap3_touchbook_devices));
 360         omap_serial_init();
 361         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 362                                   mt46h32m32lf6_sdrc_params);
 363
 364         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 365         /* REVISIT leave DVI powered down until it's needed ... */
 366         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 367
 368         /* Touchscreen and accelerometer */
 369         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 370         usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
 371         usb_musb_init(NULL);
 372
 373         usbhs_init_phys(phy_data, ARRAY_SIZE(phy_data));
 374         usbhs_init(&usbhs_bdata);
 375         board_nand_init(omap3touchbook_nand_partitions,
 376                         ARRAY_SIZE(omap3touchbook_nand_partitions), NAND_CS,
 377                         NAND_BUSWIDTH_16, NULL);
 378
 379         /* Ensure SDRC pins are mux'd for self-refresh */
 380         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 381         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 382 }
 383
 384 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 385         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 386         .atag_offset    = 0x100,
 387         .reserve        = omap_reserve,
 388         .map_io         = omap3_map_io,
 389         .init_early     = omap3430_init_early,
 390         .init_irq       = omap3_init_irq,
 391         .init_machine   = omap3_touchbook_init,
 392         .init_late      = omap3430_init_late,
 393         .init_time      = omap3_secure_sync32k_timer_init,
 394         .restart        = omap3xxx_restart,
 395 MACHINE_END