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 <linux/platform_data/spi-omap2-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 <asm/mach-types.h>
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/map.h>
  43 #include <asm/mach/flash.h>
  44 #include <asm/system_info.h>
  45
  46 #include "common.h"
  47 #include "gpmc.h"
  48 #include <linux/platform_data/mtd-nand-omap2.h>
  49
  50 #include "mux.h"
  51 #include "hsmmc.h"
  52 #include "board-flash.h"
  53 #include "common-board-devices.h"
  54
  55 #include <asm/setup.h>
  56
  57 #define OMAP3_AC_GPIO           136
  58 #define OMAP3_TS_GPIO           162
  59 #define TB_BL_PWM_TIMER         9
  60 #define TB_KILL_POWER_GPIO      168
  61
  62 #define NAND_CS                 0
  63
  64 static 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 #include "sdram-micron-mt46h32m32lf-6.h"
  98
  99 static struct omap2_hsmmc_info mmc[] = {
 100         {
 101                 .mmc            = 1,
 102                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 103                 .gpio_wp        = 29,
 104                 .deferred       = true,
 105         },
 106         {}      /* Terminator */
 107 };
 108
 109 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
 110         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 111 };
 112
 113 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
 114         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 115 };
 116
 117 static struct gpio_led gpio_leds[];
 118
 119 static int touchbook_twl_gpio_setup(struct device *dev,
 120                 unsigned gpio, unsigned ngpio)
 121 {
 122         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 123         mmc[0].gpio_cd = gpio + 0;
 124         omap_hsmmc_late_init(mmc);
 125
 126         /* REVISIT: need ehci-omap hooks for external VBUS
 127          * power switch and overcurrent detect
 128          */
 129         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 130
 131         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 132         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 133                          "nEN_USB_PWR");
 134
 135         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 136         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 137
 138         return 0;
 139 }
 140
 141 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 142         .use_leds       = true,
 143         .pullups        = BIT(1),
 144         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 145                                 | BIT(15) | BIT(16) | BIT(17),
 146         .setup          = touchbook_twl_gpio_setup,
 147 };
 148
 149 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 150 {
 151         .supply         = "vdac",
 152 },
 153 };
 154
 155 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 156 {
 157         .supply         = "vdvi",
 158 },
 159 };
 160
 161 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 162 static struct regulator_init_data touchbook_vmmc1 = {
 163         .constraints = {
 164                 .min_uV                 = 1850000,
 165                 .max_uV                 = 3150000,
 166                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 167                                         | REGULATOR_MODE_STANDBY,
 168                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 169                                         | REGULATOR_CHANGE_MODE
 170                                         | REGULATOR_CHANGE_STATUS,
 171         },
 172         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
 173         .consumer_supplies      = touchbook_vmmc1_supply,
 174 };
 175
 176 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 177 static struct regulator_init_data touchbook_vsim = {
 178         .constraints = {
 179                 .min_uV                 = 1800000,
 180                 .max_uV                 = 3000000,
 181                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 182                                         | REGULATOR_MODE_STANDBY,
 183                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 184                                         | REGULATOR_CHANGE_MODE
 185                                         | REGULATOR_CHANGE_STATUS,
 186         },
 187         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 188         .consumer_supplies      = touchbook_vsim_supply,
 189 };
 190
 191 static struct twl4030_platform_data touchbook_twldata = {
 192         /* platform_data for children goes here */
 193         .gpio           = &touchbook_gpio_data,
 194         .vmmc1          = &touchbook_vmmc1,
 195         .vsim           = &touchbook_vsim,
 196 };
 197
 198 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 199         {
 200                 I2C_BOARD_INFO("bq27200", 0x55),
 201         },
 202 };
 203
 204 static int __init omap3_touchbook_i2c_init(void)
 205 {
 206         /* Standard TouchBook bus */
 207         omap3_pmic_get_config(&touchbook_twldata,
 208                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 209                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 210
 211         touchbook_twldata.vdac->num_consumer_supplies =
 212                                         ARRAY_SIZE(touchbook_vdac_supply);
 213         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 214
 215         touchbook_twldata.vpll2->constraints.name = "VDVI";
 216         touchbook_twldata.vpll2->num_consumer_supplies =
 217                                         ARRAY_SIZE(touchbook_vdvi_supply);
 218         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 219
 220         omap3_pmic_init("twl4030", &touchbook_twldata);
 221         /* Additional TouchBook bus */
 222         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 223                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 224
 225         return 0;
 226 }
 227
 228 static struct ads7846_platform_data ads7846_pdata = {
 229         .x_min                  = 100,
 230         .y_min                  = 265,
 231         .x_max                  = 3950,
 232         .y_max                  = 3750,
 233         .x_plate_ohms           = 40,
 234         .pressure_max           = 255,
 235         .debounce_max           = 10,
 236         .debounce_tol           = 5,
 237         .debounce_rep           = 1,
 238         .gpio_pendown           = OMAP3_TS_GPIO,
 239         .keep_vref_on           = 1,
 240 };
 241
 242 static struct gpio_led gpio_leds[] = {
 243         {
 244                 .name                   = "touchbook::usr0",
 245                 .default_trigger        = "heartbeat",
 246                 .gpio                   = 150,
 247         },
 248         {
 249                 .name                   = "touchbook::usr1",
 250                 .default_trigger        = "mmc0",
 251                 .gpio                   = 149,
 252         },
 253         {
 254                 .name                   = "touchbook::pmu_stat",
 255                 .gpio                   = -EINVAL,      /* gets replaced */
 256                 .active_low             = true,
 257         },
 258 };
 259
 260 static struct gpio_led_platform_data gpio_led_info = {
 261         .leds           = gpio_leds,
 262         .num_leds       = ARRAY_SIZE(gpio_leds),
 263 };
 264
 265 static struct platform_device leds_gpio = {
 266         .name   = "leds-gpio",
 267         .id     = -1,
 268         .dev    = {
 269                 .platform_data  = &gpio_led_info,
 270         },
 271 };
 272
 273 static struct gpio_keys_button gpio_buttons[] = {
 274         {
 275                 .code                   = BTN_EXTRA,
 276                 .gpio                   = 7,
 277                 .desc                   = "user",
 278                 .wakeup                 = 1,
 279         },
 280         {
 281                 .code                   = KEY_POWER,
 282                 .gpio                   = 183,
 283                 .desc                   = "power",
 284                 .wakeup                 = 1,
 285         },
 286 };
 287
 288 static struct gpio_keys_platform_data gpio_key_info = {
 289         .buttons        = gpio_buttons,
 290         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 291 };
 292
 293 static struct platform_device keys_gpio = {
 294         .name   = "gpio-keys",
 295         .id     = -1,
 296         .dev    = {
 297                 .platform_data  = &gpio_key_info,
 298         },
 299 };
 300
 301 #ifdef CONFIG_OMAP_MUX
 302 static struct omap_board_mux board_mux[] __initdata = {
 303         { .reg_offset = OMAP_MUX_TERMINATOR },
 304 };
 305 #endif
 306
 307 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 308         &leds_gpio,
 309         &keys_gpio,
 310 };
 311
 312 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 313
 314         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 315         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 316         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 317
 318         .phy_reset  = true,
 319         .reset_gpio_port[0]  = -EINVAL,
 320         .reset_gpio_port[1]  = 147,
 321         .reset_gpio_port[2]  = -EINVAL
 322 };
 323
 324 static void omap3_touchbook_poweroff(void)
 325 {
 326         int pwr_off = TB_KILL_POWER_GPIO;
 327
 328         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 329                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 330 }
 331
 332 static int __init early_touchbook_revision(char *p)
 333 {
 334         if (!p)
 335                 return 0;
 336
 337         return strict_strtoul(p, 10, &touchbook_revision);
 338 }
 339 early_param("tbr", early_touchbook_revision);
 340
 341 static void __init omap3_touchbook_init(void)
 342 {
 343         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 344
 345         pm_power_off = omap3_touchbook_poweroff;
 346
 347         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 348                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 349                 mmc[0].gpio_wp = 23;
 350         } else {
 351                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 352         }
 353         omap_hsmmc_init(mmc);
 354
 355         omap3_touchbook_i2c_init();
 356         platform_add_devices(omap3_touchbook_devices,
 357                         ARRAY_SIZE(omap3_touchbook_devices));
 358         omap_serial_init();
 359         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 360                                   mt46h32m32lf6_sdrc_params);
 361
 362         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 363         /* REVISIT leave DVI powered down until it's needed ... */
 364         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 365
 366         /* Touchscreen and accelerometer */
 367         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 368         usb_musb_init(NULL);
 369         usbhs_init(&usbhs_bdata);
 370         board_nand_init(omap3touchbook_nand_partitions,
 371                         ARRAY_SIZE(omap3touchbook_nand_partitions), NAND_CS,
 372                         NAND_BUSWIDTH_16, NULL);
 373
 374         /* Ensure SDRC pins are mux'd for self-refresh */
 375         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 376         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 377 }
 378
 379 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 380         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 381         .atag_offset    = 0x100,
 382         .reserve        = omap_reserve,
 383         .map_io         = omap3_map_io,
 384         .init_early     = omap3430_init_early,
 385         .init_irq       = omap3_init_irq,
 386         .handle_irq     = omap3_intc_handle_irq,
 387         .init_machine   = omap3_touchbook_init,
 388         .init_late      = omap3430_init_late,
 389         .timer          = &omap3_secure_timer,
 390         .restart        = omap3xxx_restart,
 391 MACHINE_END