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board-omap3pandora.c

/*
 * board-omap3pandora.c (Pandora Handheld Console)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>

#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl4030.h>
#include <linux/leds.h>
#include <linux/input.h>
#include <linux/input/matrix_keypad.h>
#include <linux/gpio_keys.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpio.h>
#include <mach/hardware.h>
#include <mach/mcspi.h>
#include <mach/usb.h>
#include <mach/mux.h>

#include "sdram-micron-mt46h32m32lf-6.h"
#include "mmc-twl4030.h"

#define OMAP3_PANDORA_TS_GPIO       94

/* hardware debounce: (value + 1) * 31us */
#define GPIO_DEBOUNCE_TIME          127

static struct gpio_led pandora_gpio_leds[] = {
      {
            .name             = "pandora::sd1",
            .default_trigger  = "mmc0",
            .gpio             = 128,
      }, {
            .name             = "pandora::sd2",
            .default_trigger  = "mmc1",
            .gpio             = 129,
      }, {
            .name             = "pandora::bluetooth",
            .gpio             = 158,
      }, {
            .name             = "pandora::wifi",
            .gpio             = 159,
      },
};

static struct gpio_led_platform_data pandora_gpio_led_data = {
      .leds       = pandora_gpio_leds,
      .num_leds   = ARRAY_SIZE(pandora_gpio_leds),
};

static struct platform_device pandora_leds_gpio = {
      .name = "leds-gpio",
      .id   = -1,
      .dev  = {
            .platform_data    = &pandora_gpio_led_data,
      },
};

#define GPIO_BUTTON(gpio_num, ev_type, ev_code, act_low, descr)   \
{                                               \
      .gpio       = gpio_num,                   \
      .type       = ev_type,                    \
      .code       = ev_code,                    \
      .active_low = act_low,                    \
      .desc       = "btn " descr,                     \
}

#define GPIO_BUTTON_LOW(gpio_num, event_code, description)  \
      GPIO_BUTTON(gpio_num, EV_KEY, event_code, 1, description)

static struct gpio_keys_button pandora_gpio_keys[] = {
      GPIO_BUTTON_LOW(110,    KEY_UP,           "up"),
      GPIO_BUTTON_LOW(103,    KEY_DOWN,   "down"),
      GPIO_BUTTON_LOW(96,     KEY_LEFT,   "left"),
      GPIO_BUTTON_LOW(98,     KEY_RIGHT,  "right"),
      GPIO_BUTTON_LOW(111,    BTN_A,            "a"),
      GPIO_BUTTON_LOW(106,    BTN_B,            "b"),
      GPIO_BUTTON_LOW(109,    BTN_X,            "x"),
      GPIO_BUTTON_LOW(101,    BTN_Y,            "y"),
      GPIO_BUTTON_LOW(102,    BTN_TL,           "l"),
      GPIO_BUTTON_LOW(97,     BTN_TL2,    "l2"),
      GPIO_BUTTON_LOW(105,    BTN_TR,           "r"),
      GPIO_BUTTON_LOW(107,    BTN_TR2,    "r2"),
      GPIO_BUTTON_LOW(104,    KEY_LEFTCTRL,     "ctrl"),
      GPIO_BUTTON_LOW(99,     KEY_MENU,   "menu"),
      GPIO_BUTTON_LOW(176,    KEY_COFFEE, "hold"),
      GPIO_BUTTON(100, EV_KEY, KEY_LEFTALT, 0, "alt"),
      GPIO_BUTTON(108, EV_SW, SW_LID, 1, "lid"),
};

static struct gpio_keys_platform_data pandora_gpio_key_info = {
      .buttons    = pandora_gpio_keys,
      .nbuttons   = ARRAY_SIZE(pandora_gpio_keys),
};

static struct platform_device pandora_keys_gpio = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data    = &pandora_gpio_key_info,
      },
};

static void __init pandora_keys_gpio_init(void)
{
      /* set debounce time for GPIO banks 4 and 6 */
      omap_set_gpio_debounce_time(32 * 3, GPIO_DEBOUNCE_TIME);
      omap_set_gpio_debounce_time(32 * 5, GPIO_DEBOUNCE_TIME);
}

static int board_keymap[] = {
      /* row, col, code */
      KEY(0, 0, KEY_9),
      KEY(0, 1, KEY_8),
      KEY(0, 2, KEY_I),
      KEY(0, 3, KEY_J),
      KEY(0, 4, KEY_N),
      KEY(0, 5, KEY_M),
      KEY(1, 0, KEY_0),
      KEY(1, 1, KEY_7),
      KEY(1, 2, KEY_U),
      KEY(1, 3, KEY_H),
      KEY(1, 4, KEY_B),
      KEY(1, 5, KEY_SPACE),
      KEY(2, 0, KEY_BACKSPACE),
      KEY(2, 1, KEY_6),
      KEY(2, 2, KEY_Y),
      KEY(2, 3, KEY_G),
      KEY(2, 4, KEY_V),
      KEY(2, 5, KEY_FN),
      KEY(3, 0, KEY_O),
      KEY(3, 1, KEY_5),
      KEY(3, 2, KEY_T),
      KEY(3, 3, KEY_F),
      KEY(3, 4, KEY_C),
      KEY(4, 0, KEY_P),
      KEY(4, 1, KEY_4),
      KEY(4, 2, KEY_R),
      KEY(4, 3, KEY_D),
      KEY(4, 4, KEY_X),
      KEY(5, 0, KEY_K),
      KEY(5, 1, KEY_3),
      KEY(5, 2, KEY_E),
      KEY(5, 3, KEY_S),
      KEY(5, 4, KEY_Z),
      KEY(6, 0, KEY_L),
      KEY(6, 1, KEY_2),
      KEY(6, 2, KEY_W),
      KEY(6, 3, KEY_A),
      KEY(6, 4, KEY_DOT),
      KEY(7, 0, KEY_ENTER),
      KEY(7, 1, KEY_1),
      KEY(7, 2, KEY_Q),
      KEY(7, 3, KEY_LEFTSHIFT),
      KEY(7, 4, KEY_COMMA),
};

static struct matrix_keymap_data board_map_data = {
      .keymap                 = board_keymap,
      .keymap_size            = ARRAY_SIZE(board_keymap),
};

static struct twl4030_keypad_data pandora_kp_data = {
      .keymap_data      = &board_map_data,
      .rows       = 8,
      .cols       = 6,
      .rep        = 1,
};

static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
      {
            .mmc        = 1,
            .wires            = 4,
            .gpio_cd    = -EINVAL,
            .gpio_wp    = 126,
            .ext_clock  = 0,
      },
      {
            .mmc        = 2,
            .wires            = 4,
            .gpio_cd    = -EINVAL,
            .gpio_wp    = 127,
            .ext_clock  = 1,
            .transceiver      = true,
      },
      {
            .mmc        = 3,
            .wires            = 4,
            .gpio_cd    = -EINVAL,
            .gpio_wp    = -EINVAL,
      },
      {}    /* Terminator */
};

static struct regulator_consumer_supply pandora_vmmc1_supply = {
      .supply                 = "vmmc",
};

static struct regulator_consumer_supply pandora_vmmc2_supply = {
      .supply                 = "vmmc",
};

static int omap3pandora_twl_gpio_setup(struct device *dev,
            unsigned gpio, unsigned ngpio)
{
      /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
      omap3pandora_mmc[0].gpio_cd = gpio + 0;
      omap3pandora_mmc[1].gpio_cd = gpio + 1;
      twl4030_mmc_init(omap3pandora_mmc);

      /* link regulators to MMC adapters */
      pandora_vmmc1_supply.dev = omap3pandora_mmc[0].dev;
      pandora_vmmc2_supply.dev = omap3pandora_mmc[1].dev;

      return 0;
}

static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
      .gpio_base  = OMAP_MAX_GPIO_LINES,
      .irq_base   = TWL4030_GPIO_IRQ_BASE,
      .irq_end    = TWL4030_GPIO_IRQ_END,
      .setup            = omap3pandora_twl_gpio_setup,
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data pandora_vmmc1 = {
      .constraints = {
            .min_uV                 = 1850000,
            .max_uV                 = 3150000,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = &pandora_vmmc1_supply,
};

/* VMMC2 for MMC2 pins CMD, CLK, DAT0..DAT3 (max 100 mA) */
static struct regulator_init_data pandora_vmmc2 = {
      .constraints = {
            .min_uV                 = 1850000,
            .max_uV                 = 3150000,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = &pandora_vmmc2_supply,
};

static struct twl4030_usb_data omap3pandora_usb_data = {
      .usb_mode   = T2_USB_MODE_ULPI,
};

static struct twl4030_platform_data omap3pandora_twldata = {
      .irq_base   = TWL4030_IRQ_BASE,
      .irq_end    = TWL4030_IRQ_END,
      .gpio       = &omap3pandora_gpio_data,
      .usb        = &omap3pandora_usb_data,
      .vmmc1            = &pandora_vmmc1,
      .vmmc2            = &pandora_vmmc2,
      .keypad           = &pandora_kp_data,
};

static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
      {
            I2C_BOARD_INFO("tps65950", 0x48),
            .flags = I2C_CLIENT_WAKE,
            .irq = INT_34XX_SYS_NIRQ,
            .platform_data = &omap3pandora_twldata,
      },
};

static int __init omap3pandora_i2c_init(void)
{
      omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
                  ARRAY_SIZE(omap3pandora_i2c_boardinfo));
      /* i2c2 pins are not connected */
      omap_register_i2c_bus(3, 400, NULL, 0);
      return 0;
}

static void __init omap3pandora_ads7846_init(void)
{
      int gpio = OMAP3_PANDORA_TS_GPIO;
      int ret;

      ret = gpio_request(gpio, "ads7846_pen_down");
      if (ret < 0) {
            printk(KERN_ERR "Failed to request GPIO %d for "
                        "ads7846 pen down IRQ\n", gpio);
            return;
      }

      gpio_direction_input(gpio);
}

static int ads7846_get_pendown_state(void)
{
      return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
}

static struct ads7846_platform_data ads7846_config = {
      .x_max                  = 0x0fff,
      .y_max                  = 0x0fff,
      .x_plate_ohms           = 180,
      .pressure_max           = 255,
      .debounce_max           = 10,
      .debounce_tol           = 3,
      .debounce_rep           = 1,
      .get_pendown_state      = ads7846_get_pendown_state,
      .keep_vref_on           = 1,
};

static struct omap2_mcspi_device_config ads7846_mcspi_config = {
      .turbo_mode = 0,
      .single_channel   = 1,  /* 0: slave, 1: master */
};

static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
      {
            .modalias         = "ads7846",
            .bus_num          = 1,
            .chip_select            = 0,
            .max_speed_hz           = 1500000,
            .controller_data  = &ads7846_mcspi_config,
            .irq              = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
            .platform_data          = &ads7846_config,
      }
};

static struct platform_device omap3pandora_lcd_device = {
      .name       = "pandora_lcd",
      .id         = -1,
};

static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
      .ctrl_name  = "internal",
};

static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
      { OMAP_TAG_LCD,         &omap3pandora_lcd_config },
};

static void __init omap3pandora_init_irq(void)
{
      omap_board_config = omap3pandora_config;
      omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
      omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
                       mt46h32m32lf6_sdrc_params);
      omap_init_irq();
      omap_gpio_init();
}

static struct platform_device *omap3pandora_devices[] __initdata = {
      &omap3pandora_lcd_device,
      &pandora_leds_gpio,
      &pandora_keys_gpio,
};

static void __init omap3pandora_init(void)
{
      omap3pandora_i2c_init();
      platform_add_devices(omap3pandora_devices,
                  ARRAY_SIZE(omap3pandora_devices));
      omap_serial_init();
      spi_register_board_info(omap3pandora_spi_board_info,
                  ARRAY_SIZE(omap3pandora_spi_board_info));
      omap3pandora_ads7846_init();
      pandora_keys_gpio_init();
      usb_musb_init();

      /* Ensure SDRC pins are mux'd for self-refresh */
      omap_cfg_reg(H16_34XX_SDRC_CKE0);
      omap_cfg_reg(H17_34XX_SDRC_CKE1);
}

static void __init omap3pandora_map_io(void)
{
      omap2_set_globals_343x();
      omap2_map_common_io();
}

MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
      .phys_io    = 0x48000000,
      .io_pg_offst      = ((0xd8000000) >> 18) & 0xfffc,
      .boot_params      = 0x80000100,
      .map_io           = omap3pandora_map_io,
      .init_irq   = omap3pandora_init_irq,
      .init_machine     = omap3pandora_init,
      .timer            = &omap_timer,
MACHINE_END

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