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 "timer-gp.h"
  55 #include "common-board-devices.h"
  56
  57 #include <asm/setup.h>
  58
  59 #define NAND_BLOCK_SIZE         SZ_128K
  60
  61 #define OMAP3_AC_GPIO           136
  62 #define OMAP3_TS_GPIO           162
  63 #define TB_BL_PWM_TIMER         9
  64 #define TB_KILL_POWER_GPIO      168
  65
  66 static unsigned long touchbook_revision;
  67
  68 static struct mtd_partition omap3touchbook_nand_partitions[] = {
  69         /* All the partition sizes are listed in terms of NAND block size */
  70         {
  71                 .name           = "X-Loader",
  72                 .offset         = 0,
  73                 .size           = 4 * NAND_BLOCK_SIZE,
  74                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  75         },
  76         {
  77                 .name           = "U-Boot",
  78                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  79                 .size           = 15 * NAND_BLOCK_SIZE,
  80                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  81         },
  82         {
  83                 .name           = "U-Boot Env",
  84                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  85                 .size           = 1 * NAND_BLOCK_SIZE,
  86         },
  87         {
  88                 .name           = "Kernel",
  89                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  90                 .size           = 32 * NAND_BLOCK_SIZE,
  91         },
  92         {
  93                 .name           = "File System",
  94                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  95                 .size           = MTDPART_SIZ_FULL,
  96         },
  97 };
  98
  99 #include "sdram-micron-mt46h32m32lf-6.h"
 100
 101 static struct omap2_hsmmc_info mmc[] = {
 102         {
 103                 .mmc            = 1,
 104                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 105                 .gpio_wp        = 29,
 106         },
 107         {}      /* Terminator */
 108 };
 109
 110 static struct platform_device omap3_touchbook_lcd_device = {
 111         .name           = "omap3touchbook_lcd",
 112         .id             = -1,
 113 };
 114
 115 static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
 116         .ctrl_name      = "internal",
 117 };
 118
 119 static struct regulator_consumer_supply touchbook_vmmc1_supply = {
 120         .supply                 = "vmmc",
 121 };
 122
 123 static struct regulator_consumer_supply touchbook_vsim_supply = {
 124         .supply                 = "vmmc_aux",
 125 };
 126
 127 static struct gpio_led gpio_leds[];
 128
 129 static int touchbook_twl_gpio_setup(struct device *dev,
 130                 unsigned gpio, unsigned ngpio)
 131 {
 132         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 133                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 134                 mmc[0].gpio_wp = 23;
 135         } else {
 136                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 137         }
 138         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 139         mmc[0].gpio_cd = gpio + 0;
 140         omap2_hsmmc_init(mmc);
 141
 142         /* link regulators to MMC adapters */
 143         touchbook_vmmc1_supply.dev = mmc[0].dev;
 144         touchbook_vsim_supply.dev = mmc[0].dev;
 145
 146         /* REVISIT: need ehci-omap hooks for external VBUS
 147          * power switch and overcurrent detect
 148          */
 149         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 150
 151         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 152         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 153                          "nEN_USB_PWR");
 154
 155         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 156         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 157
 158         return 0;
 159 }
 160
 161 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 162         .gpio_base      = OMAP_MAX_GPIO_LINES,
 163         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 164         .irq_end        = TWL4030_GPIO_IRQ_END,
 165         .use_leds       = true,
 166         .pullups        = BIT(1),
 167         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 168                                 | BIT(15) | BIT(16) | BIT(17),
 169         .setup          = touchbook_twl_gpio_setup,
 170 };
 171
 172 static struct regulator_consumer_supply touchbook_vdac_supply = {
 173         .supply         = "vdac",
 174         .dev            = &omap3_touchbook_lcd_device.dev,
 175 };
 176
 177 static struct regulator_consumer_supply touchbook_vdvi_supply = {
 178         .supply         = "vdvi",
 179         .dev            = &omap3_touchbook_lcd_device.dev,
 180 };
 181
 182 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 183 static struct regulator_init_data touchbook_vmmc1 = {
 184         .constraints = {
 185                 .min_uV                 = 1850000,
 186                 .max_uV                 = 3150000,
 187                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 188                                         | REGULATOR_MODE_STANDBY,
 189                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 190                                         | REGULATOR_CHANGE_MODE
 191                                         | REGULATOR_CHANGE_STATUS,
 192         },
 193         .num_consumer_supplies  = 1,
 194         .consumer_supplies      = &touchbook_vmmc1_supply,
 195 };
 196
 197 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 198 static struct regulator_init_data touchbook_vsim = {
 199         .constraints = {
 200                 .min_uV                 = 1800000,
 201                 .max_uV                 = 3000000,
 202                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 203                                         | REGULATOR_MODE_STANDBY,
 204                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 205                                         | REGULATOR_CHANGE_MODE
 206                                         | REGULATOR_CHANGE_STATUS,
 207         },
 208         .num_consumer_supplies  = 1,
 209         .consumer_supplies      = &touchbook_vsim_supply,
 210 };
 211
 212 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 213 static struct regulator_init_data touchbook_vdac = {
 214         .constraints = {
 215                 .min_uV                 = 1800000,
 216                 .max_uV                 = 1800000,
 217                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 218                                         | REGULATOR_MODE_STANDBY,
 219                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 220                                         | REGULATOR_CHANGE_STATUS,
 221         },
 222         .num_consumer_supplies  = 1,
 223         .consumer_supplies      = &touchbook_vdac_supply,
 224 };
 225
 226 /* VPLL2 for digital video outputs */
 227 static struct regulator_init_data touchbook_vpll2 = {
 228         .constraints = {
 229                 .name                   = "VDVI",
 230                 .min_uV                 = 1800000,
 231                 .max_uV                 = 1800000,
 232                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 233                                         | REGULATOR_MODE_STANDBY,
 234                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 235                                         | REGULATOR_CHANGE_STATUS,
 236         },
 237         .num_consumer_supplies  = 1,
 238         .consumer_supplies      = &touchbook_vdvi_supply,
 239 };
 240
 241 static struct twl4030_usb_data touchbook_usb_data = {
 242         .usb_mode       = T2_USB_MODE_ULPI,
 243 };
 244
 245 static struct twl4030_codec_audio_data touchbook_audio_data;
 246
 247 static struct twl4030_codec_data touchbook_codec_data = {
 248         .audio_mclk = 26000000,
 249         .audio = &touchbook_audio_data,
 250 };
 251
 252 static struct twl4030_platform_data touchbook_twldata = {
 253         .irq_base       = TWL4030_IRQ_BASE,
 254         .irq_end        = TWL4030_IRQ_END,
 255
 256         /* platform_data for children goes here */
 257         .usb            = &touchbook_usb_data,
 258         .gpio           = &touchbook_gpio_data,
 259         .codec          = &touchbook_codec_data,
 260         .vmmc1          = &touchbook_vmmc1,
 261         .vsim           = &touchbook_vsim,
 262         .vdac           = &touchbook_vdac,
 263         .vpll2          = &touchbook_vpll2,
 264 };
 265
 266 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 267         {
 268                 I2C_BOARD_INFO("bq27200", 0x55),
 269         },
 270 };
 271
 272 static int __init omap3_touchbook_i2c_init(void)
 273 {
 274         /* Standard TouchBook bus */
 275         omap3_pmic_init("twl4030", &touchbook_twldata);
 276
 277         /* Additional TouchBook bus */
 278         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 279                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 280
 281         return 0;
 282 }
 283
 284 static struct ads7846_platform_data ads7846_pdata = {
 285         .x_min                  = 100,
 286         .y_min                  = 265,
 287         .x_max                  = 3950,
 288         .y_max                  = 3750,
 289         .x_plate_ohms           = 40,
 290         .pressure_max           = 255,
 291         .debounce_max           = 10,
 292         .debounce_tol           = 5,
 293         .debounce_rep           = 1,
 294         .gpio_pendown           = OMAP3_TS_GPIO,
 295         .keep_vref_on           = 1,
 296 };
 297
 298 static struct gpio_led gpio_leds[] = {
 299         {
 300                 .name                   = "touchbook::usr0",
 301                 .default_trigger        = "heartbeat",
 302                 .gpio                   = 150,
 303         },
 304         {
 305                 .name                   = "touchbook::usr1",
 306                 .default_trigger        = "mmc0",
 307                 .gpio                   = 149,
 308         },
 309         {
 310                 .name                   = "touchbook::pmu_stat",
 311                 .gpio                   = -EINVAL,      /* gets replaced */
 312                 .active_low             = true,
 313         },
 314 };
 315
 316 static struct gpio_led_platform_data gpio_led_info = {
 317         .leds           = gpio_leds,
 318         .num_leds       = ARRAY_SIZE(gpio_leds),
 319 };
 320
 321 static struct platform_device leds_gpio = {
 322         .name   = "leds-gpio",
 323         .id     = -1,
 324         .dev    = {
 325                 .platform_data  = &gpio_led_info,
 326         },
 327 };
 328
 329 static struct gpio_keys_button gpio_buttons[] = {
 330         {
 331                 .code                   = BTN_EXTRA,
 332                 .gpio                   = 7,
 333                 .desc                   = "user",
 334                 .wakeup                 = 1,
 335         },
 336         {
 337                 .code                   = KEY_POWER,
 338                 .gpio                   = 183,
 339                 .desc                   = "power",
 340                 .wakeup                 = 1,
 341         },
 342 };
 343
 344 static struct gpio_keys_platform_data gpio_key_info = {
 345         .buttons        = gpio_buttons,
 346         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 347 };
 348
 349 static struct platform_device keys_gpio = {
 350         .name   = "gpio-keys",
 351         .id     = -1,
 352         .dev    = {
 353                 .platform_data  = &gpio_key_info,
 354         },
 355 };
 356
 357 static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
 358         { OMAP_TAG_LCD,         &omap3_touchbook_lcd_config },
 359 };
 360
 361 #ifdef CONFIG_OMAP_MUX
 362 static struct omap_board_mux board_mux[] __initdata = {
 363         { .reg_offset = OMAP_MUX_TERMINATOR },
 364 };
 365 #endif
 366
 367 static void __init omap3_touchbook_init_early(void)
 368 {
 369         omap2_init_common_infrastructure();
 370         omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
 371                                   mt46h32m32lf6_sdrc_params);
 372 }
 373
 374 static void __init omap3_touchbook_init_irq(void)
 375 {
 376         omap_init_irq();
 377 #ifdef CONFIG_OMAP_32K_TIMER
 378         omap2_gp_clockevent_set_gptimer(12);
 379 #endif
 380 }
 381
 382 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 383         &omap3_touchbook_lcd_device,
 384         &leds_gpio,
 385         &keys_gpio,
 386 };
 387
 388 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 389
 390         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 391         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 392         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 393
 394         .phy_reset  = true,
 395         .reset_gpio_port[0]  = -EINVAL,
 396         .reset_gpio_port[1]  = 147,
 397         .reset_gpio_port[2]  = -EINVAL
 398 };
 399
 400 static void omap3_touchbook_poweroff(void)
 401 {
 402         int pwr_off = TB_KILL_POWER_GPIO;
 403
 404         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 405                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 406 }
 407
 408 static int __init early_touchbook_revision(char *p)
 409 {
 410         if (!p)
 411                 return 0;
 412
 413         return strict_strtoul(p, 10, &touchbook_revision);
 414 }
 415 early_param("tbr", early_touchbook_revision);
 416
 417 static void __init omap3_touchbook_init(void)
 418 {
 419         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 420         omap_board_config = omap3_touchbook_config;
 421         omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
 422
 423         pm_power_off = omap3_touchbook_poweroff;
 424
 425         omap3_touchbook_i2c_init();
 426         platform_add_devices(omap3_touchbook_devices,
 427                         ARRAY_SIZE(omap3_touchbook_devices));
 428         omap_serial_init();
 429
 430         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 431         /* REVISIT leave DVI powered down until it's needed ... */
 432         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 433
 434         /* Touchscreen and accelerometer */
 435         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
 436         usb_musb_init(NULL);
 437         usbhs_init(&usbhs_bdata);
 438         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
 439                              ARRAY_SIZE(omap3touchbook_nand_partitions));
 440
 441         /* Ensure SDRC pins are mux'd for self-refresh */
 442         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 443         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 444 }
 445
 446 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 447         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 448         .boot_params    = 0x80000100,
 449         .reserve        = omap_reserve,
 450         .map_io         = omap3_map_io,
 451         .init_early     = omap3_touchbook_init_early,
 452         .init_irq       = omap3_touchbook_init_irq,
 453         .init_machine   = omap3_touchbook_init,
 454         .timer          = &omap_timer,
 455 MACHINE_END