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 #include <asm/system_info.h>
  46
  47 #include <plat/board.h>
  48 #include "common.h"
  49 #include <plat/gpmc.h>
  50 #include <plat/nand.h>
  51 #include <plat/usb.h>
  52
  53 #include "mux.h"
  54 #include "hsmmc.h"
  55 #include "common-board-devices.h"
  56
  57 #include <asm/setup.h>
  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 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         .gpio_base      = OMAP_MAX_GPIO_LINES,
 143         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 144         .irq_end        = TWL4030_GPIO_IRQ_END,
 145         .use_leds       = true,
 146         .pullups        = BIT(1),
 147         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 148                                 | BIT(15) | BIT(16) | BIT(17),
 149         .setup          = touchbook_twl_gpio_setup,
 150 };
 151
 152 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 153 {
 154         .supply         = "vdac",
 155 },
 156 };
 157
 158 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 159 {
 160         .supply         = "vdvi",
 161 },
 162 };
 163
 164 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 165 static struct regulator_init_data touchbook_vmmc1 = {
 166         .constraints = {
 167                 .min_uV                 = 1850000,
 168                 .max_uV                 = 3150000,
 169                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 170                                         | REGULATOR_MODE_STANDBY,
 171                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 172                                         | REGULATOR_CHANGE_MODE
 173                                         | REGULATOR_CHANGE_STATUS,
 174         },
 175         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
 176         .consumer_supplies      = touchbook_vmmc1_supply,
 177 };
 178
 179 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 180 static struct regulator_init_data touchbook_vsim = {
 181         .constraints = {
 182                 .min_uV                 = 1800000,
 183                 .max_uV                 = 3000000,
 184                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 185                                         | REGULATOR_MODE_STANDBY,
 186                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 187                                         | REGULATOR_CHANGE_MODE
 188                                         | REGULATOR_CHANGE_STATUS,
 189         },
 190         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 191         .consumer_supplies      = touchbook_vsim_supply,
 192 };
 193
 194 static struct twl4030_platform_data touchbook_twldata = {
 195         /* platform_data for children goes here */
 196         .gpio           = &touchbook_gpio_data,
 197         .vmmc1          = &touchbook_vmmc1,
 198         .vsim           = &touchbook_vsim,
 199 };
 200
 201 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 202         {
 203                 I2C_BOARD_INFO("bq27200", 0x55),
 204         },
 205 };
 206
 207 static int __init omap3_touchbook_i2c_init(void)
 208 {
 209         /* Standard TouchBook bus */
 210         omap3_pmic_get_config(&touchbook_twldata,
 211                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 212                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 213
 214         touchbook_twldata.vdac->num_consumer_supplies =
 215                                         ARRAY_SIZE(touchbook_vdac_supply);
 216         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 217
 218         touchbook_twldata.vpll2->constraints.name = "VDVI";
 219         touchbook_twldata.vpll2->num_consumer_supplies =
 220                                         ARRAY_SIZE(touchbook_vdvi_supply);
 221         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 222
 223         omap3_pmic_init("twl4030", &touchbook_twldata);
 224         /* Additional TouchBook bus */
 225         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 226                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 227
 228         return 0;
 229 }
 230
 231 static struct ads7846_platform_data ads7846_pdata = {
 232         .x_min                  = 100,
 233         .y_min                  = 265,
 234         .x_max                  = 3950,
 235         .y_max                  = 3750,
 236         .x_plate_ohms           = 40,
 237         .pressure_max           = 255,
 238         .debounce_max           = 10,
 239         .debounce_tol           = 5,
 240         .debounce_rep           = 1,
 241         .gpio_pendown           = OMAP3_TS_GPIO,
 242         .keep_vref_on           = 1,
 243 };
 244
 245 static struct gpio_led gpio_leds[] = {
 246         {
 247                 .name                   = "touchbook::usr0",
 248                 .default_trigger        = "heartbeat",
 249                 .gpio                   = 150,
 250         },
 251         {
 252                 .name                   = "touchbook::usr1",
 253                 .default_trigger        = "mmc0",
 254                 .gpio                   = 149,
 255         },
 256         {
 257                 .name                   = "touchbook::pmu_stat",
 258                 .gpio                   = -EINVAL,      /* gets replaced */
 259                 .active_low             = true,
 260         },
 261 };
 262
 263 static struct gpio_led_platform_data gpio_led_info = {
 264         .leds           = gpio_leds,
 265         .num_leds       = ARRAY_SIZE(gpio_leds),
 266 };
 267
 268 static struct platform_device leds_gpio = {
 269         .name   = "leds-gpio",
 270         .id     = -1,
 271         .dev    = {
 272                 .platform_data  = &gpio_led_info,
 273         },
 274 };
 275
 276 static struct gpio_keys_button gpio_buttons[] = {
 277         {
 278                 .code                   = BTN_EXTRA,
 279                 .gpio                   = 7,
 280                 .desc                   = "user",
 281                 .wakeup                 = 1,
 282         },
 283         {
 284                 .code                   = KEY_POWER,
 285                 .gpio                   = 183,
 286                 .desc                   = "power",
 287                 .wakeup                 = 1,
 288         },
 289 };
 290
 291 static struct gpio_keys_platform_data gpio_key_info = {
 292         .buttons        = gpio_buttons,
 293         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 294 };
 295
 296 static struct platform_device keys_gpio = {
 297         .name   = "gpio-keys",
 298         .id     = -1,
 299         .dev    = {
 300                 .platform_data  = &gpio_key_info,
 301         },
 302 };
 303
 304 #ifdef CONFIG_OMAP_MUX
 305 static struct omap_board_mux board_mux[] __initdata = {
 306         { .reg_offset = OMAP_MUX_TERMINATOR },
 307 };
 308 #endif
 309
 310 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 311         &leds_gpio,
 312         &keys_gpio,
 313 };
 314
 315 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 316
 317         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 318         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 319         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 320
 321         .phy_reset  = true,
 322         .reset_gpio_port[0]  = -EINVAL,
 323         .reset_gpio_port[1]  = 147,
 324         .reset_gpio_port[2]  = -EINVAL
 325 };
 326
 327 static void omap3_touchbook_poweroff(void)
 328 {
 329         int pwr_off = TB_KILL_POWER_GPIO;
 330
 331         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 332                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 333 }
 334
 335 static int __init early_touchbook_revision(char *p)
 336 {
 337         if (!p)
 338                 return 0;
 339
 340         return strict_strtoul(p, 10, &touchbook_revision);
 341 }
 342 early_param("tbr", early_touchbook_revision);
 343
 344 static void __init omap3_touchbook_init(void)
 345 {
 346         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 347
 348         pm_power_off = omap3_touchbook_poweroff;
 349
 350         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 351                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 352                 mmc[0].gpio_wp = 23;
 353         } else {
 354                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 355         }
 356         omap_hsmmc_init(mmc);
 357
 358         omap3_touchbook_i2c_init();
 359         platform_add_devices(omap3_touchbook_devices,
 360                         ARRAY_SIZE(omap3_touchbook_devices));
 361         omap_serial_init();
 362         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 363                                   mt46h32m32lf6_sdrc_params);
 364
 365         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 366         /* REVISIT leave DVI powered down until it's needed ... */
 367         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 368
 369         /* Touchscreen and accelerometer */
 370         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 371         usb_musb_init(NULL);
 372         usbhs_init(&usbhs_bdata);
 373         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
 374                              ARRAY_SIZE(omap3touchbook_nand_partitions));
 375
 376         /* Ensure SDRC pins are mux'd for self-refresh */
 377         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 378         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 379 }
 380
 381 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 382         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 383         .atag_offset    = 0x100,
 384         .reserve        = omap_reserve,
 385         .map_io         = omap3_map_io,
 386         .init_early     = omap3430_init_early,
 387         .init_irq       = omap3_init_irq,
 388         .handle_irq     = omap3_intc_handle_irq,
 389         .init_machine   = omap3_touchbook_init,
 390         .init_late      = omap3430_init_late,
 391         .timer          = &omap3_secure_timer,
 392         .restart        = omap_prcm_restart,
 393 MACHINE_END