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board-ldp.c

/*
 * linux/arch/arm/mach-omap2/board-ldp.c
 *
 * Copyright (C) 2008 Texas Instruments Inc.
 * Nishant Kamat <nskamat@ti.com>
 *
 * Modified from mach-omap2/board-3430sdp.c
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/input/matrix_keypad.h>
#include <linux/gpio_keys.h>
#include <linux/workqueue.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
#include <linux/io.h>
#include <linux/smsc911x.h>
#include <linux/mmc/host.h>

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

#include <plat/mcspi.h>
#include <mach/gpio.h>
#include <plat/board.h>
#include <plat/common.h>
#include <plat/gpmc.h>
#include <mach/board-zoom.h>

#include <asm/delay.h>
#include <plat/usb.h>

#include "board-flash.h"
#include "mux.h"
#include "hsmmc.h"
#include "control.h"

#define LDP_SMSC911X_CS       1
#define LDP_SMSC911X_GPIO     152
#define DEBUG_BASE            0x08000000
#define LDP_ETHR_START        DEBUG_BASE

static struct resource ldp_smsc911x_resources[] = {
      [0] = {
            .start      = LDP_ETHR_START,
            .end  = LDP_ETHR_START + SZ_4K,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = 0,
            .end  = 0,
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
      },
};

static struct smsc911x_platform_config ldp_smsc911x_config = {
      .irq_polarity     = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
      .irq_type   = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
      .flags            = SMSC911X_USE_32BIT,
      .phy_interface    = PHY_INTERFACE_MODE_MII,
};

static struct platform_device ldp_smsc911x_device = {
      .name       = "smsc911x",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(ldp_smsc911x_resources),
      .resource   = ldp_smsc911x_resources,
      .dev        = {
            .platform_data = &ldp_smsc911x_config,
      },
};

static uint32_t board_keymap[] = {
      KEY(0, 0, KEY_1),
      KEY(1, 0, KEY_2),
      KEY(2, 0, KEY_3),
      KEY(0, 1, KEY_4),
      KEY(1, 1, KEY_5),
      KEY(2, 1, KEY_6),
      KEY(3, 1, KEY_F5),
      KEY(0, 2, KEY_7),
      KEY(1, 2, KEY_8),
      KEY(2, 2, KEY_9),
      KEY(3, 2, KEY_F6),
      KEY(0, 3, KEY_F7),
      KEY(1, 3, KEY_0),
      KEY(2, 3, KEY_F8),
      PERSISTENT_KEY(4, 5),
      KEY(4, 4, KEY_VOLUMEUP),
      KEY(5, 5, KEY_VOLUMEDOWN),
      0
};

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

static struct twl4030_keypad_data ldp_kp_twl4030_data = {
      .keymap_data      = &board_map_data,
      .rows       = 6,
      .cols       = 6,
      .rep        = 1,
};

static struct gpio_keys_button ldp_gpio_keys_buttons[] = {
      [0] = {
            .code             = KEY_ENTER,
            .gpio             = 101,
            .desc             = "enter sw",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [1] = {
            .code             = KEY_F1,
            .gpio             = 102,
            .desc             = "func 1",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [2] = {
            .code             = KEY_F2,
            .gpio             = 103,
            .desc             = "func 2",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [3] = {
            .code             = KEY_F3,
            .gpio             = 104,
            .desc             = "func 3",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [4] = {
            .code             = KEY_F4,
            .gpio             = 105,
            .desc             = "func 4",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [5] = {
            .code             = KEY_LEFT,
            .gpio             = 106,
            .desc             = "left sw",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [6] = {
            .code             = KEY_RIGHT,
            .gpio             = 107,
            .desc             = "right sw",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [7] = {
            .code             = KEY_UP,
            .gpio             = 108,
            .desc             = "up sw",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
      [8] = {
            .code             = KEY_DOWN,
            .gpio             = 109,
            .desc             = "down sw",
            .active_low       = 1,
            .debounce_interval      = 30,
      },
};

static struct gpio_keys_platform_data ldp_gpio_keys = {
      .buttons          = ldp_gpio_keys_buttons,
      .nbuttons         = ARRAY_SIZE(ldp_gpio_keys_buttons),
      .rep              = 1,
};

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

static int ts_gpio;

/**
 * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
 *
 * @return - void. If request gpio fails then Flag KERN_ERR.
 */
static void ads7846_dev_init(void)
{
      if (gpio_request(ts_gpio, "ads7846 irq") < 0) {
            printk(KERN_ERR "can't get ads746 pen down GPIO\n");
            return;
      }

      gpio_direction_input(ts_gpio);
      gpio_set_debounce(ts_gpio, 310);
}

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

static struct ads7846_platform_data tsc2046_config __initdata = {
      .get_pendown_state      = ads7846_get_pendown_state,
      .keep_vref_on           = 1,
};

static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
      .turbo_mode = 0,
      .single_channel   = 1,  /* 0: slave, 1: master */
};

static struct spi_board_info ldp_spi_board_info[] __initdata = {
      [0] = {
            /*
             * TSC2046 operates at a max freqency of 2MHz, so
             * operate slightly below at 1.5MHz
             */
            .modalias         = "ads7846",
            .bus_num          = 1,
            .chip_select            = 0,
            .max_speed_hz           = 1500000,
            .controller_data  = &tsc2046_mcspi_config,
            .irq              = 0,
            .platform_data          = &tsc2046_config,
      },
};

static inline void __init ldp_init_smsc911x(void)
{
      int eth_cs;
      unsigned long cs_mem_base;
      int eth_gpio = 0;

      eth_cs = LDP_SMSC911X_CS;

      if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
            printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
            return;
      }

      ldp_smsc911x_resources[0].start = cs_mem_base + 0x0;
      ldp_smsc911x_resources[0].end   = cs_mem_base + 0xff;
      udelay(100);

      eth_gpio = LDP_SMSC911X_GPIO;

      ldp_smsc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);

      if (gpio_request(eth_gpio, "smsc911x irq") < 0) {
            printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
                        eth_gpio);
            return;
      }
      gpio_direction_input(eth_gpio);
}

static struct platform_device ldp_lcd_device = {
      .name       = "ldp_lcd",
      .id         = -1,
};

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

static struct omap_board_config_kernel ldp_config[] __initdata = {
      { OMAP_TAG_LCD,         &ldp_lcd_config },
};

static void __init omap_ldp_init_irq(void)
{
      omap_board_config = ldp_config;
      omap_board_config_size = ARRAY_SIZE(ldp_config);
      omap2_init_common_infrastructure();
      omap2_init_common_devices(NULL, NULL);
      omap_init_irq();
}

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

static struct twl4030_gpio_platform_data ldp_gpio_data = {
      .gpio_base  = OMAP_MAX_GPIO_LINES,
      .irq_base   = TWL4030_GPIO_IRQ_BASE,
      .irq_end    = TWL4030_GPIO_IRQ_END,
};

static struct twl4030_madc_platform_data ldp_madc_data = {
      .irq_line   = 1,
};

static struct regulator_consumer_supply ldp_vmmc1_supply = {
      .supply                 = "vmmc",
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data ldp_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      = &ldp_vmmc1_supply,
};

static struct twl4030_platform_data ldp_twldata = {
      .irq_base   = TWL4030_IRQ_BASE,
      .irq_end    = TWL4030_IRQ_END,

      /* platform_data for children goes here */
      .madc       = &ldp_madc_data,
      .usb        = &ldp_usb_data,
      .vmmc1            = &ldp_vmmc1,
      .gpio       = &ldp_gpio_data,
      .keypad           = &ldp_kp_twl4030_data,
};

static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
      {
            I2C_BOARD_INFO("twl4030", 0x48),
            .flags = I2C_CLIENT_WAKE,
            .irq = INT_34XX_SYS_NIRQ,
            .platform_data = &ldp_twldata,
      },
};

static int __init omap_i2c_init(void)
{
      omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
                  ARRAY_SIZE(ldp_i2c_boardinfo));
      omap_register_i2c_bus(2, 400, NULL, 0);
      omap_register_i2c_bus(3, 400, NULL, 0);
      return 0;
}

static struct omap2_hsmmc_info mmc[] __initdata = {
      {
            .mmc        = 1,
            .caps       = MMC_CAP_4_BIT_DATA,
            .gpio_cd    = -EINVAL,
            .gpio_wp    = -EINVAL,
      },
      {}    /* Terminator */
};

static struct platform_device *ldp_devices[] __initdata = {
      &ldp_smsc911x_device,
      &ldp_lcd_device,
      &ldp_gpio_keys_device,
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
      { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static struct omap_musb_board_data musb_board_data = {
      .interface_type         = MUSB_INTERFACE_ULPI,
      .mode             = MUSB_OTG,
      .power                  = 100,
};

static struct mtd_partition ldp_nand_partitions[] = {
      /* All the partition sizes are listed in terms of NAND block size */
      {
            .name       = "X-Loader-NAND",
            .offset           = 0,
            .size       = 4 * (64 * 2048),      /* 512KB, 0x80000 */
            .mask_flags = MTD_WRITEABLE,  /* force read-only */
      },
      {
            .name       = "U-Boot-NAND",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
            .size       = 10 * (64 * 2048),     /* 1.25MB, 0x140000 */
            .mask_flags = MTD_WRITEABLE,  /* force read-only */
      },
      {
            .name       = "Boot Env-NAND",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x1c0000 */
            .size       = 2 * (64 * 2048),      /* 256KB, 0x40000 */
      },
      {
            .name       = "Kernel-NAND",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x0200000*/
            .size       = 240 * (64 * 2048),    /* 30M, 0x1E00000 */
      },
      {
            .name       = "File System - NAND",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x2000000 */
            .size       = MTDPART_SIZ_FULL,     /* 96MB, 0x6000000 */
      },

};

static void __init omap_ldp_init(void)
{
      omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
      ldp_init_smsc911x();
      omap_i2c_init();
      platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
      ts_gpio = 54;
      ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
      spi_register_board_info(ldp_spi_board_info,
                        ARRAY_SIZE(ldp_spi_board_info));
      ads7846_dev_init();
      omap_serial_init();
      usb_musb_init(&musb_board_data);
      board_nand_init(ldp_nand_partitions,
            ARRAY_SIZE(ldp_nand_partitions), ZOOM_NAND_CS);

      omap2_hsmmc_init(mmc);
      /* link regulators to MMC adapters */
      ldp_vmmc1_supply.dev = mmc[0].dev;
}

MACHINE_START(OMAP_LDP, "OMAP LDP board")
      .boot_params      = 0x80000100,
      .map_io           = omap3_map_io,
      .reserve    = omap_reserve,
      .init_irq   = omap_ldp_init_irq,
      .init_machine     = omap_ldp_init,
      .timer            = &omap_timer,
MACHINE_END

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