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
  46 #include <plat/board.h>
  47 #include <plat/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         },
 104         {}      /* Terminator */
 105 };
 106
 107 static struct platform_device omap3_touchbook_lcd_device = {
 108         .name           = "omap3touchbook_lcd",
 109         .id             = -1,
 110 };
 111
 112 static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
 113         .ctrl_name      = "internal",
 114 };
 115
 116 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
 117         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 118 };
 119
 120 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
 121         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 122 };
 123
 124 static struct gpio_led gpio_leds[];
 125
 126 static int touchbook_twl_gpio_setup(struct device *dev,
 127                 unsigned gpio, unsigned ngpio)
 128 {
 129         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 130                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 131                 mmc[0].gpio_wp = 23;
 132         } else {
 133                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 134         }
 135         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 136         mmc[0].gpio_cd = gpio + 0;
 137         omap2_hsmmc_init(mmc);
 138
 139         /* REVISIT: need ehci-omap hooks for external VBUS
 140          * power switch and overcurrent detect
 141          */
 142         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 143
 144         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 145         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 146                          "nEN_USB_PWR");
 147
 148         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 149         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 150
 151         return 0;
 152 }
 153
 154 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 155         .gpio_base      = OMAP_MAX_GPIO_LINES,
 156         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 157         .irq_end        = TWL4030_GPIO_IRQ_END,
 158         .use_leds       = true,
 159         .pullups        = BIT(1),
 160         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 161                                 | BIT(15) | BIT(16) | BIT(17),
 162         .setup          = touchbook_twl_gpio_setup,
 163 };
 164
 165 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 166 {
 167         .supply         = "vdac",
 168         .dev            = &omap3_touchbook_lcd_device.dev,
 169 },
 170 };
 171
 172 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 173 {
 174         .supply         = "vdvi",
 175         .dev            = &omap3_touchbook_lcd_device.dev,
 176 },
 177 };
 178
 179 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 180 static struct regulator_init_data touchbook_vmmc1 = {
 181         .constraints = {
 182                 .min_uV                 = 1850000,
 183                 .max_uV                 = 3150000,
 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_vmmc1_supply),
 191         .consumer_supplies      = touchbook_vmmc1_supply,
 192 };
 193
 194 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 195 static struct regulator_init_data touchbook_vsim = {
 196         .constraints = {
 197                 .min_uV                 = 1800000,
 198                 .max_uV                 = 3000000,
 199                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 200                                         | REGULATOR_MODE_STANDBY,
 201                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 202                                         | REGULATOR_CHANGE_MODE
 203                                         | REGULATOR_CHANGE_STATUS,
 204         },
 205         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 206         .consumer_supplies      = touchbook_vsim_supply,
 207 };
 208
 209 static struct twl4030_platform_data touchbook_twldata = {
 210         /* platform_data for children goes here */
 211         .gpio           = &touchbook_gpio_data,
 212         .vmmc1          = &touchbook_vmmc1,
 213         .vsim           = &touchbook_vsim,
 214 };
 215
 216 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 217         {
 218                 I2C_BOARD_INFO("bq27200", 0x55),
 219         },
 220 };
 221
 222 static int __init omap3_touchbook_i2c_init(void)
 223 {
 224         /* Standard TouchBook bus */
 225         omap3_pmic_get_config(&touchbook_twldata,
 226                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 227                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 228
 229         touchbook_twldata.vdac->num_consumer_supplies =
 230                                         ARRAY_SIZE(touchbook_vdac_supply);
 231         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 232
 233         touchbook_twldata.vpll2->constraints.name = "VDVI";
 234         touchbook_twldata.vpll2->num_consumer_supplies =
 235                                         ARRAY_SIZE(touchbook_vdvi_supply);
 236         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 237
 238         omap3_pmic_init("twl4030", &touchbook_twldata);
 239         /* Additional TouchBook bus */
 240         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 241                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 242
 243         return 0;
 244 }
 245
 246 static struct ads7846_platform_data ads7846_pdata = {
 247         .x_min                  = 100,
 248         .y_min                  = 265,
 249         .x_max                  = 3950,
 250         .y_max                  = 3750,
 251         .x_plate_ohms           = 40,
 252         .pressure_max           = 255,
 253         .debounce_max           = 10,
 254         .debounce_tol           = 5,
 255         .debounce_rep           = 1,
 256         .gpio_pendown           = OMAP3_TS_GPIO,
 257         .keep_vref_on           = 1,
 258 };
 259
 260 static struct gpio_led gpio_leds[] = {
 261         {
 262                 .name                   = "touchbook::usr0",
 263                 .default_trigger        = "heartbeat",
 264                 .gpio                   = 150,
 265         },
 266         {
 267                 .name                   = "touchbook::usr1",
 268                 .default_trigger        = "mmc0",
 269                 .gpio                   = 149,
 270         },
 271         {
 272                 .name                   = "touchbook::pmu_stat",
 273                 .gpio                   = -EINVAL,      /* gets replaced */
 274                 .active_low             = true,
 275         },
 276 };
 277
 278 static struct gpio_led_platform_data gpio_led_info = {
 279         .leds           = gpio_leds,
 280         .num_leds       = ARRAY_SIZE(gpio_leds),
 281 };
 282
 283 static struct platform_device leds_gpio = {
 284         .name   = "leds-gpio",
 285         .id     = -1,
 286         .dev    = {
 287                 .platform_data  = &gpio_led_info,
 288         },
 289 };
 290
 291 static struct gpio_keys_button gpio_buttons[] = {
 292         {
 293                 .code                   = BTN_EXTRA,
 294                 .gpio                   = 7,
 295                 .desc                   = "user",
 296                 .wakeup                 = 1,
 297         },
 298         {
 299                 .code                   = KEY_POWER,
 300                 .gpio                   = 183,
 301                 .desc                   = "power",
 302                 .wakeup                 = 1,
 303         },
 304 };
 305
 306 static struct gpio_keys_platform_data gpio_key_info = {
 307         .buttons        = gpio_buttons,
 308         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 309 };
 310
 311 static struct platform_device keys_gpio = {
 312         .name   = "gpio-keys",
 313         .id     = -1,
 314         .dev    = {
 315                 .platform_data  = &gpio_key_info,
 316         },
 317 };
 318
 319 static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
 320         { OMAP_TAG_LCD,         &omap3_touchbook_lcd_config },
 321 };
 322
 323 #ifdef CONFIG_OMAP_MUX
 324 static struct omap_board_mux board_mux[] __initdata = {
 325         { .reg_offset = OMAP_MUX_TERMINATOR },
 326 };
 327 #endif
 328
 329 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 330         &omap3_touchbook_lcd_device,
 331         &leds_gpio,
 332         &keys_gpio,
 333 };
 334
 335 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 336
 337         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 338         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 339         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 340
 341         .phy_reset  = true,
 342         .reset_gpio_port[0]  = -EINVAL,
 343         .reset_gpio_port[1]  = 147,
 344         .reset_gpio_port[2]  = -EINVAL
 345 };
 346
 347 static void omap3_touchbook_poweroff(void)
 348 {
 349         int pwr_off = TB_KILL_POWER_GPIO;
 350
 351         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 352                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 353 }
 354
 355 static int __init early_touchbook_revision(char *p)
 356 {
 357         if (!p)
 358                 return 0;
 359
 360         return strict_strtoul(p, 10, &touchbook_revision);
 361 }
 362 early_param("tbr", early_touchbook_revision);
 363
 364 static void __init omap3_touchbook_init(void)
 365 {
 366         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 367         omap_board_config = omap3_touchbook_config;
 368         omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
 369
 370         pm_power_off = omap3_touchbook_poweroff;
 371
 372         omap3_touchbook_i2c_init();
 373         platform_add_devices(omap3_touchbook_devices,
 374                         ARRAY_SIZE(omap3_touchbook_devices));
 375         omap_serial_init();
 376         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 377                                   mt46h32m32lf6_sdrc_params);
 378
 379         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 380         /* REVISIT leave DVI powered down until it's needed ... */
 381         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 382
 383         /* Touchscreen and accelerometer */
 384         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 385         usb_musb_init(NULL);
 386         usbhs_init(&usbhs_bdata);
 387         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
 388                              ARRAY_SIZE(omap3touchbook_nand_partitions));
 389
 390         /* Ensure SDRC pins are mux'd for self-refresh */
 391         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 392         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 393 }
 394
 395 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 396         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 397         .atag_offset    = 0x100,
 398         .reserve        = omap_reserve,
 399         .map_io         = omap3_map_io,
 400         .init_early     = omap3430_init_early,
 401         .init_irq       = omap3_init_irq,
 402         .init_machine   = omap3_touchbook_init,
 403         .timer          = &omap3_secure_timer,
 404 MACHINE_END