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