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 "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 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         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 121                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 122                 mmc[0].gpio_wp = 23;
 123         } else {
 124                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 125         }
 126         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 127         mmc[0].gpio_cd = gpio + 0;
 128         omap2_hsmmc_init(mmc);
 129
 130         /* REVISIT: need ehci-omap hooks for external VBUS
 131          * power switch and overcurrent detect
 132          */
 133         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
 134
 135         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 136         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
 137                          "nEN_USB_PWR");
 138
 139         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 140         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 141
 142         return 0;
 143 }
 144
 145 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 146         .gpio_base      = OMAP_MAX_GPIO_LINES,
 147         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 148         .irq_end        = TWL4030_GPIO_IRQ_END,
 149         .use_leds       = true,
 150         .pullups        = BIT(1),
 151         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 152                                 | BIT(15) | BIT(16) | BIT(17),
 153         .setup          = touchbook_twl_gpio_setup,
 154 };
 155
 156 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
 157 {
 158         .supply         = "vdac",
 159 },
 160 };
 161
 162 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
 163 {
 164         .supply         = "vdvi",
 165 },
 166 };
 167
 168 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 169 static struct regulator_init_data touchbook_vmmc1 = {
 170         .constraints = {
 171                 .min_uV                 = 1850000,
 172                 .max_uV                 = 3150000,
 173                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 174                                         | REGULATOR_MODE_STANDBY,
 175                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 176                                         | REGULATOR_CHANGE_MODE
 177                                         | REGULATOR_CHANGE_STATUS,
 178         },
 179         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
 180         .consumer_supplies      = touchbook_vmmc1_supply,
 181 };
 182
 183 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 184 static struct regulator_init_data touchbook_vsim = {
 185         .constraints = {
 186                 .min_uV                 = 1800000,
 187                 .max_uV                 = 3000000,
 188                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 189                                         | REGULATOR_MODE_STANDBY,
 190                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 191                                         | REGULATOR_CHANGE_MODE
 192                                         | REGULATOR_CHANGE_STATUS,
 193         },
 194         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
 195         .consumer_supplies      = touchbook_vsim_supply,
 196 };
 197
 198 static struct twl4030_platform_data touchbook_twldata = {
 199         /* platform_data for children goes here */
 200         .gpio           = &touchbook_gpio_data,
 201         .vmmc1          = &touchbook_vmmc1,
 202         .vsim           = &touchbook_vsim,
 203 };
 204
 205 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 206         {
 207                 I2C_BOARD_INFO("bq27200", 0x55),
 208         },
 209 };
 210
 211 static int __init omap3_touchbook_i2c_init(void)
 212 {
 213         /* Standard TouchBook bus */
 214         omap3_pmic_get_config(&touchbook_twldata,
 215                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 216                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 217
 218         touchbook_twldata.vdac->num_consumer_supplies =
 219                                         ARRAY_SIZE(touchbook_vdac_supply);
 220         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
 221
 222         touchbook_twldata.vpll2->constraints.name = "VDVI";
 223         touchbook_twldata.vpll2->num_consumer_supplies =
 224                                         ARRAY_SIZE(touchbook_vdvi_supply);
 225         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
 226
 227         omap3_pmic_init("twl4030", &touchbook_twldata);
 228         /* Additional TouchBook bus */
 229         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 230                         ARRAY_SIZE(touchBook_i2c_boardinfo));
 231
 232         return 0;
 233 }
 234
 235 static struct ads7846_platform_data ads7846_pdata = {
 236         .x_min                  = 100,
 237         .y_min                  = 265,
 238         .x_max                  = 3950,
 239         .y_max                  = 3750,
 240         .x_plate_ohms           = 40,
 241         .pressure_max           = 255,
 242         .debounce_max           = 10,
 243         .debounce_tol           = 5,
 244         .debounce_rep           = 1,
 245         .gpio_pendown           = OMAP3_TS_GPIO,
 246         .keep_vref_on           = 1,
 247 };
 248
 249 static struct gpio_led gpio_leds[] = {
 250         {
 251                 .name                   = "touchbook::usr0",
 252                 .default_trigger        = "heartbeat",
 253                 .gpio                   = 150,
 254         },
 255         {
 256                 .name                   = "touchbook::usr1",
 257                 .default_trigger        = "mmc0",
 258                 .gpio                   = 149,
 259         },
 260         {
 261                 .name                   = "touchbook::pmu_stat",
 262                 .gpio                   = -EINVAL,      /* gets replaced */
 263                 .active_low             = true,
 264         },
 265 };
 266
 267 static struct gpio_led_platform_data gpio_led_info = {
 268         .leds           = gpio_leds,
 269         .num_leds       = ARRAY_SIZE(gpio_leds),
 270 };
 271
 272 static struct platform_device leds_gpio = {
 273         .name   = "leds-gpio",
 274         .id     = -1,
 275         .dev    = {
 276                 .platform_data  = &gpio_led_info,
 277         },
 278 };
 279
 280 static struct gpio_keys_button gpio_buttons[] = {
 281         {
 282                 .code                   = BTN_EXTRA,
 283                 .gpio                   = 7,
 284                 .desc                   = "user",
 285                 .wakeup                 = 1,
 286         },
 287         {
 288                 .code                   = KEY_POWER,
 289                 .gpio                   = 183,
 290                 .desc                   = "power",
 291                 .wakeup                 = 1,
 292         },
 293 };
 294
 295 static struct gpio_keys_platform_data gpio_key_info = {
 296         .buttons        = gpio_buttons,
 297         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 298 };
 299
 300 static struct platform_device keys_gpio = {
 301         .name   = "gpio-keys",
 302         .id     = -1,
 303         .dev    = {
 304                 .platform_data  = &gpio_key_info,
 305         },
 306 };
 307
 308 #ifdef CONFIG_OMAP_MUX
 309 static struct omap_board_mux board_mux[] __initdata = {
 310         { .reg_offset = OMAP_MUX_TERMINATOR },
 311 };
 312 #endif
 313
 314 static struct platform_device *omap3_touchbook_devices[] __initdata = {
 315         &leds_gpio,
 316         &keys_gpio,
 317 };
 318
 319 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 320
 321         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 322         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 323         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 324
 325         .phy_reset  = true,
 326         .reset_gpio_port[0]  = -EINVAL,
 327         .reset_gpio_port[1]  = 147,
 328         .reset_gpio_port[2]  = -EINVAL
 329 };
 330
 331 static void omap3_touchbook_poweroff(void)
 332 {
 333         int pwr_off = TB_KILL_POWER_GPIO;
 334
 335         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
 336                 printk(KERN_ERR "Unable to get kill power GPIO\n");
 337 }
 338
 339 static int __init early_touchbook_revision(char *p)
 340 {
 341         if (!p)
 342                 return 0;
 343
 344         return strict_strtoul(p, 10, &touchbook_revision);
 345 }
 346 early_param("tbr", early_touchbook_revision);
 347
 348 static void __init omap3_touchbook_init(void)
 349 {
 350         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 351
 352         pm_power_off = omap3_touchbook_poweroff;
 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         .timer          = &omap3_secure_timer,
 387 MACHINE_END