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 "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 "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 static unsigned long touchbook_revision;
  64
  65 static struct mtd_partition omap3touchbook_nand_partitions[] = {
  66         /* All the partition sizes are listed in terms of NAND block size */
  67         {
  68                 .name           = "X-Loader",
  69                 .offset         = 0,
  70                 .size           = 4 * NAND_BLOCK_SIZE,
  71                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  72         },
  73         {
  74                 .name           = "U-Boot",
  75                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  76                 .size           = 15 * NAND_BLOCK_SIZE,
  77                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  78         },
  79         {
  80                 .name           = "U-Boot Env",
  81                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  82                 .size           = 1 * NAND_BLOCK_SIZE,
  83         },
  84         {
  85                 .name           = "Kernel",
  86                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  87                 .size           = 32 * NAND_BLOCK_SIZE,
  88         },
  89         {
  90                 .name           = "File System",
  91                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  92                 .size           = MTDPART_SIZ_FULL,
  93         },
  94 };
  95
  96 #include "sdram-micron-mt46h32m32lf-6.h"
  97
  98 static struct omap2_hsmmc_info mmc[] = {
  99         {
 100                 .mmc            = 1,
 101                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 102                 .gpio_wp        = 29,
 103                 .deferred       = true,
 104         },
 105         {}      /* Terminator */
 106 };
 107
 108 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
 109         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 110 };
 111
 112 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
 113         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 114 };
 115
 116 static struct gpio_led gpio_leds[];
 117
 118 static int touchbook_twl_gpio_setup(struct device *dev,
 119                 unsigned gpio, unsigned ngpio)
 120 {
 121         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 122         mmc[0].gpio_cd = gpio + 0;
 123         omap_hsmmc_late_init(mmc);
 124
 125         /* REVISIT: need ehci-omap hooks for external VBUS
 126          * power switch and overcurrent detect
 127          */
 128         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 129
 130         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 131         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 132                          "nEN_USB_PWR");
 133
 134         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 135         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 136
 137         return 0;
 138 }
 139
 140 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 141         .use_leds       = true,
 142         .pullups        = BIT(1),
 143         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 144                                 | BIT(15) | BIT(16) | BIT(17),
 145         .setup          = touchbook_twl_gpio_setup,
 146 };
 147
 148 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 149 {
 150         .supply         = "vdac",
 151 },
 152 };
 153
 154 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 155 {
 156         .supply         = "vdvi",
 157 },
 158 };
 159
 160 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 161 static struct regulator_init_data touchbook_vmmc1 = {
 162         .constraints = {
 163                 .min_uV                 = 1850000,
 164                 .max_uV                 = 3150000,
 165                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 166                                         | REGULATOR_MODE_STANDBY,
 167                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 168                                         | REGULATOR_CHANGE_MODE
 169                                         | REGULATOR_CHANGE_STATUS,
 170         },
 171         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
 172         .consumer_supplies      = touchbook_vmmc1_supply,
 173 };
 174
 175 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 176 static struct regulator_init_data touchbook_vsim = {
 177         .constraints = {
 178                 .min_uV                 = 1800000,
 179                 .max_uV                 = 3000000,
 180                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 181                                         | REGULATOR_MODE_STANDBY,
 182                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 183                                         | REGULATOR_CHANGE_MODE
 184                                         | REGULATOR_CHANGE_STATUS,
 185         },
 186         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 187         .consumer_supplies      = touchbook_vsim_supply,
 188 };
 189
 190 static struct twl4030_platform_data touchbook_twldata = {
 191         /* platform_data for children goes here */
 192         .gpio           = &touchbook_gpio_data,
 193         .vmmc1          = &touchbook_vmmc1,
 194         .vsim           = &touchbook_vsim,
 195 };
 196
 197 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 198         {
 199                 I2C_BOARD_INFO("bq27200", 0x55),
 200         },
 201 };
 202
 203 static int __init omap3_touchbook_i2c_init(void)
 204 {
 205         /* Standard TouchBook bus */
 206         omap3_pmic_get_config(&touchbook_twldata,
 207                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 208                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 209
 210         touchbook_twldata.vdac->num_consumer_supplies =
 211                                         ARRAY_SIZE(touchbook_vdac_supply);
 212         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 213
 214         touchbook_twldata.vpll2->constraints.name = "VDVI";
 215         touchbook_twldata.vpll2->num_consumer_supplies =
 216                                         ARRAY_SIZE(touchbook_vdvi_supply);
 217         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 218
 219         omap3_pmic_init("twl4030", &touchbook_twldata);
 220         /* Additional TouchBook bus */
 221         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 222                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 223
 224         return 0;
 225 }
 226
 227 static struct ads7846_platform_data ads7846_pdata = {
 228         .x_min                  = 100,
 229         .y_min                  = 265,
 230         .x_max                  = 3950,
 231         .y_max                  = 3750,
 232         .x_plate_ohms           = 40,
 233         .pressure_max           = 255,
 234         .debounce_max           = 10,
 235         .debounce_tol           = 5,
 236         .debounce_rep           = 1,
 237         .gpio_pendown           = OMAP3_TS_GPIO,
 238         .keep_vref_on           = 1,
 239 };
 240
 241 static struct gpio_led gpio_leds[] = {
 242         {
 243                 .name                   = "touchbook::usr0",
 244                 .default_trigger        = "heartbeat",
 245                 .gpio                   = 150,
 246         },
 247         {
 248                 .name                   = "touchbook::usr1",
 249                 .default_trigger        = "mmc0",
 250                 .gpio                   = 149,
 251         },
 252         {
 253                 .name                   = "touchbook::pmu_stat",
 254                 .gpio                   = -EINVAL,      /* gets replaced */
 255                 .active_low             = true,
 256         },
 257 };
 258
 259 static struct gpio_led_platform_data gpio_led_info = {
 260         .leds           = gpio_leds,
 261         .num_leds       = ARRAY_SIZE(gpio_leds),
 262 };
 263
 264 static struct platform_device leds_gpio = {
 265         .name   = "leds-gpio",
 266         .id     = -1,
 267         .dev    = {
 268                 .platform_data  = &gpio_led_info,
 269         },
 270 };
 271
 272 static struct gpio_keys_button gpio_buttons[] = {
 273         {
 274                 .code                   = BTN_EXTRA,
 275                 .gpio                   = 7,
 276                 .desc                   = "user",
 277                 .wakeup                 = 1,
 278         },
 279         {
 280                 .code                   = KEY_POWER,
 281                 .gpio                   = 183,
 282                 .desc                   = "power",
 283                 .wakeup                 = 1,
 284         },
 285 };
 286
 287 static struct gpio_keys_platform_data gpio_key_info = {
 288         .buttons        = gpio_buttons,
 289         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 290 };
 291
 292 static struct platform_device keys_gpio = {
 293         .name   = "gpio-keys",
 294         .id     = -1,
 295         .dev    = {
 296                 .platform_data  = &gpio_key_info,
 297         },
 298 };
 299
 300 #ifdef CONFIG_OMAP_MUX
 301 static struct omap_board_mux board_mux[] __initdata = {
 302         { .reg_offset = OMAP_MUX_TERMINATOR },
 303 };
 304 #endif
 305
 306 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 307         &leds_gpio,
 308         &keys_gpio,
 309 };
 310
 311 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 312
 313         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 314         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 315         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 316
 317         .phy_reset  = true,
 318         .reset_gpio_port[0]  = -EINVAL,
 319         .reset_gpio_port[1]  = 147,
 320         .reset_gpio_port[2]  = -EINVAL
 321 };
 322
 323 static void omap3_touchbook_poweroff(void)
 324 {
 325         int pwr_off = TB_KILL_POWER_GPIO;
 326
 327         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 328                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 329 }
 330
 331 static int __init early_touchbook_revision(char *p)
 332 {
 333         if (!p)
 334                 return 0;
 335
 336         return strict_strtoul(p, 10, &touchbook_revision);
 337 }
 338 early_param("tbr", early_touchbook_revision);
 339
 340 static void __init omap3_touchbook_init(void)
 341 {
 342         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 343
 344         pm_power_off = omap3_touchbook_poweroff;
 345
 346         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 347                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 348                 mmc[0].gpio_wp = 23;
 349         } else {
 350                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 351         }
 352         omap_hsmmc_init(mmc);
 353
 354         omap3_touchbook_i2c_init();
 355         platform_add_devices(omap3_touchbook_devices,
 356                         ARRAY_SIZE(omap3_touchbook_devices));
 357         omap_serial_init();
 358         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 359                                   mt46h32m32lf6_sdrc_params);
 360
 361         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 362         /* REVISIT leave DVI powered down until it's needed ... */
 363         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 364
 365         /* Touchscreen and accelerometer */
 366         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 367         usb_musb_init(NULL);
 368         usbhs_init(&usbhs_bdata);
 369         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
 370                              ARRAY_SIZE(omap3touchbook_nand_partitions));
 371
 372         /* Ensure SDRC pins are mux'd for self-refresh */
 373         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 374         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 375 }
 376
 377 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 378         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 379         .atag_offset    = 0x100,
 380         .reserve        = omap_reserve,
 381         .map_io         = omap3_map_io,
 382         .init_early     = omap3430_init_early,
 383         .init_irq       = omap3_init_irq,
 384         .handle_irq     = omap3_intc_handle_irq,
 385         .init_machine   = omap3_touchbook_init,
 386         .init_late      = omap3430_init_late,
 387         .timer          = &omap3_secure_timer,
 388         .restart        = omap_prcm_restart,
 389 MACHINE_END