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 <plat/gpmc.h>
  48 #include <linux/platform_data/mtd-nand-omap2.h>
  49 #include <plat/usb.h>
  50
  51 #include "mux.h"
  52 #include "hsmmc.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 static unsigned long touchbook_revision;
  63
  64 static struct mtd_partition omap3touchbook_nand_partitions[] = {
  65         /* All the partition sizes are listed in terms of NAND block size */
  66         {
  67                 .name           = "X-Loader",
  68                 .offset         = 0,
  69                 .size           = 4 * NAND_BLOCK_SIZE,
  70                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  71         },
  72         {
  73                 .name           = "U-Boot",
  74                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  75                 .size           = 15 * NAND_BLOCK_SIZE,
  76                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  77         },
  78         {
  79                 .name           = "U-Boot Env",
  80                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  81                 .size           = 1 * NAND_BLOCK_SIZE,
  82         },
  83         {
  84                 .name           = "Kernel",
  85                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  86                 .size           = 32 * NAND_BLOCK_SIZE,
  87         },
  88         {
  89                 .name           = "File System",
  90                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  91                 .size           = MTDPART_SIZ_FULL,
  92         },
  93 };
  94
  95 #include "sdram-micron-mt46h32m32lf-6.h"
  96
  97 static struct omap2_hsmmc_info mmc[] = {
  98         {
  99                 .mmc            = 1,
 100                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 101                 .gpio_wp        = 29,
 102                 .deferred       = true,
 103         },
 104         {}      /* Terminator */
 105 };
 106
 107 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
 108         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 109 };
 110
 111 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
 112         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 113 };
 114
 115 static struct gpio_led gpio_leds[];
 116
 117 static int touchbook_twl_gpio_setup(struct device *dev,
 118                 unsigned gpio, unsigned ngpio)
 119 {
 120         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 121         mmc[0].gpio_cd = gpio + 0;
 122         omap_hsmmc_late_init(mmc);
 123
 124         /* REVISIT: need ehci-omap hooks for external VBUS
 125          * power switch and overcurrent detect
 126          */
 127         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 128
 129         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 130         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 131                          "nEN_USB_PWR");
 132
 133         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 134         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 135
 136         return 0;
 137 }
 138
 139 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 140         .use_leds       = true,
 141         .pullups        = BIT(1),
 142         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 143                                 | BIT(15) | BIT(16) | BIT(17),
 144         .setup          = touchbook_twl_gpio_setup,
 145 };
 146
 147 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 148 {
 149         .supply         = "vdac",
 150 },
 151 };
 152
 153 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 154 {
 155         .supply         = "vdvi",
 156 },
 157 };
 158
 159 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 160 static struct regulator_init_data touchbook_vmmc1 = {
 161         .constraints = {
 162                 .min_uV                 = 1850000,
 163                 .max_uV                 = 3150000,
 164                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 165                                         | REGULATOR_MODE_STANDBY,
 166                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 167                                         | REGULATOR_CHANGE_MODE
 168                                         | REGULATOR_CHANGE_STATUS,
 169         },
 170         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
 171         .consumer_supplies      = touchbook_vmmc1_supply,
 172 };
 173
 174 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 175 static struct regulator_init_data touchbook_vsim = {
 176         .constraints = {
 177                 .min_uV                 = 1800000,
 178                 .max_uV                 = 3000000,
 179                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 180                                         | REGULATOR_MODE_STANDBY,
 181                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 182                                         | REGULATOR_CHANGE_MODE
 183                                         | REGULATOR_CHANGE_STATUS,
 184         },
 185         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 186         .consumer_supplies      = touchbook_vsim_supply,
 187 };
 188
 189 static struct twl4030_platform_data touchbook_twldata = {
 190         /* platform_data for children goes here */
 191         .gpio           = &touchbook_gpio_data,
 192         .vmmc1          = &touchbook_vmmc1,
 193         .vsim           = &touchbook_vsim,
 194 };
 195
 196 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 197         {
 198                 I2C_BOARD_INFO("bq27200", 0x55),
 199         },
 200 };
 201
 202 static int __init omap3_touchbook_i2c_init(void)
 203 {
 204         /* Standard TouchBook bus */
 205         omap3_pmic_get_config(&touchbook_twldata,
 206                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 207                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 208
 209         touchbook_twldata.vdac->num_consumer_supplies =
 210                                         ARRAY_SIZE(touchbook_vdac_supply);
 211         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 212
 213         touchbook_twldata.vpll2->constraints.name = "VDVI";
 214         touchbook_twldata.vpll2->num_consumer_supplies =
 215                                         ARRAY_SIZE(touchbook_vdvi_supply);
 216         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 217
 218         omap3_pmic_init("twl4030", &touchbook_twldata);
 219         /* Additional TouchBook bus */
 220         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 221                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 222
 223         return 0;
 224 }
 225
 226 static struct ads7846_platform_data ads7846_pdata = {
 227         .x_min                  = 100,
 228         .y_min                  = 265,
 229         .x_max                  = 3950,
 230         .y_max                  = 3750,
 231         .x_plate_ohms           = 40,
 232         .pressure_max           = 255,
 233         .debounce_max           = 10,
 234         .debounce_tol           = 5,
 235         .debounce_rep           = 1,
 236         .gpio_pendown           = OMAP3_TS_GPIO,
 237         .keep_vref_on           = 1,
 238 };
 239
 240 static struct gpio_led gpio_leds[] = {
 241         {
 242                 .name                   = "touchbook::usr0",
 243                 .default_trigger        = "heartbeat",
 244                 .gpio                   = 150,
 245         },
 246         {
 247                 .name                   = "touchbook::usr1",
 248                 .default_trigger        = "mmc0",
 249                 .gpio                   = 149,
 250         },
 251         {
 252                 .name                   = "touchbook::pmu_stat",
 253                 .gpio                   = -EINVAL,      /* gets replaced */
 254                 .active_low             = true,
 255         },
 256 };
 257
 258 static struct gpio_led_platform_data gpio_led_info = {
 259         .leds           = gpio_leds,
 260         .num_leds       = ARRAY_SIZE(gpio_leds),
 261 };
 262
 263 static struct platform_device leds_gpio = {
 264         .name   = "leds-gpio",
 265         .id     = -1,
 266         .dev    = {
 267                 .platform_data  = &gpio_led_info,
 268         },
 269 };
 270
 271 static struct gpio_keys_button gpio_buttons[] = {
 272         {
 273                 .code                   = BTN_EXTRA,
 274                 .gpio                   = 7,
 275                 .desc                   = "user",
 276                 .wakeup                 = 1,
 277         },
 278         {
 279                 .code                   = KEY_POWER,
 280                 .gpio                   = 183,
 281                 .desc                   = "power",
 282                 .wakeup                 = 1,
 283         },
 284 };
 285
 286 static struct gpio_keys_platform_data gpio_key_info = {
 287         .buttons        = gpio_buttons,
 288         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 289 };
 290
 291 static struct platform_device keys_gpio = {
 292         .name   = "gpio-keys",
 293         .id     = -1,
 294         .dev    = {
 295                 .platform_data  = &gpio_key_info,
 296         },
 297 };
 298
 299 #ifdef CONFIG_OMAP_MUX
 300 static struct omap_board_mux board_mux[] __initdata = {
 301         { .reg_offset = OMAP_MUX_TERMINATOR },
 302 };
 303 #endif
 304
 305 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 306         &leds_gpio,
 307         &keys_gpio,
 308 };
 309
 310 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 311
 312         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 313         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 314         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 315
 316         .phy_reset  = true,
 317         .reset_gpio_port[0]  = -EINVAL,
 318         .reset_gpio_port[1]  = 147,
 319         .reset_gpio_port[2]  = -EINVAL
 320 };
 321
 322 static void omap3_touchbook_poweroff(void)
 323 {
 324         int pwr_off = TB_KILL_POWER_GPIO;
 325
 326         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 327                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 328 }
 329
 330 static int __init early_touchbook_revision(char *p)
 331 {
 332         if (!p)
 333                 return 0;
 334
 335         return strict_strtoul(p, 10, &touchbook_revision);
 336 }
 337 early_param("tbr", early_touchbook_revision);
 338
 339 static void __init omap3_touchbook_init(void)
 340 {
 341         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 342
 343         pm_power_off = omap3_touchbook_poweroff;
 344
 345         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 346                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 347                 mmc[0].gpio_wp = 23;
 348         } else {
 349                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 350         }
 351         omap_hsmmc_init(mmc);
 352
 353         omap3_touchbook_i2c_init();
 354         platform_add_devices(omap3_touchbook_devices,
 355                         ARRAY_SIZE(omap3_touchbook_devices));
 356         omap_serial_init();
 357         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 358                                   mt46h32m32lf6_sdrc_params);
 359
 360         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 361         /* REVISIT leave DVI powered down until it's needed ... */
 362         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 363
 364         /* Touchscreen and accelerometer */
 365         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 366         usb_musb_init(NULL);
 367         usbhs_init(&usbhs_bdata);
 368         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
 369                              ARRAY_SIZE(omap3touchbook_nand_partitions));
 370
 371         /* Ensure SDRC pins are mux'd for self-refresh */
 372         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 373         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 374 }
 375
 376 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 377         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 378         .atag_offset    = 0x100,
 379         .reserve        = omap_reserve,
 380         .map_io         = omap3_map_io,
 381         .init_early     = omap3430_init_early,
 382         .init_irq       = omap3_init_irq,
 383         .handle_irq     = omap3_intc_handle_irq,
 384         .init_machine   = omap3_touchbook_init,
 385         .init_late      = omap3430_init_late,
 386         .timer          = &omap3_secure_timer,
 387         .restart        = omap_prcm_restart,
 388 MACHINE_END