board-dm644x-evm.c

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/*
 * TI DaVinci EVM board support
 *
 * Author: Kevin Hilman, MontaVista Software, Inc. <[email protected]>
 *
 * 2007 (c) MontaVista Software, Inc. This file is licensed under
 * the terms of the GNU General Public License version 2. This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c/pcf857x.h>
#include <linux/i2c/at24.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/phy.h>
#include <linux/clk.h>
#include <linux/videodev2.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/export.h>

#include <media/tvp514x.h>

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

#include <mach/common.h>
#include <linux/platform_data/i2c-davinci.h>
#include <mach/serial.h>
#include <mach/mux.h>
#include <linux/platform_data/mtd-davinci.h>
#include <linux/platform_data/mmc-davinci.h>
#include <linux/platform_data/usb-davinci.h>
#include <linux/platform_data/mtd-davinci-aemif.h>

#include "davinci.h"

#define DM644X_EVM_PHY_ID       "davinci_mdio-0:01"
#define LXT971_PHY_ID   (0x001378e2)
#define LXT971_PHY_MASK (0xfffffff0)

static struct mtd_partition davinci_evm_norflash_partitions[] = {
    /* bootloader (UBL, U-Boot, etc) in first 5 sectors */
    {
        .name       = "bootloader",
        .offset     = 0,
        .size       = 5 * SZ_64K,
        .mask_flags = MTD_WRITEABLE, /* force read-only */
    },
    /* bootloader params in the next 1 sectors */
    {
        .name       = "params",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_64K,
        .mask_flags = 0,
    },
    /* kernel */
    {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_2M,
        .mask_flags = 0
    },
    /* file system */
    {
        .name       = "filesystem",
        .offset     = MTDPART_OFS_APPEND,
        .size       = MTDPART_SIZ_FULL,
        .mask_flags = 0
    }
};

static struct physmap_flash_data davinci_evm_norflash_data = {
    .width      = 2,
    .parts      = davinci_evm_norflash_partitions,
    .nr_parts   = ARRAY_SIZE(davinci_evm_norflash_partitions),
};

/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
 * limits addresses to 16M, so using addresses past 16M will wrap */
static struct resource davinci_evm_norflash_resource = {
    .start      = DM644X_ASYNC_EMIF_DATA_CE0_BASE,
    .end        = DM644X_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
    .flags      = IORESOURCE_MEM,
};

static struct platform_device davinci_evm_norflash_device = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev        = {
        .platform_data  = &davinci_evm_norflash_data,
    },
    .num_resources  = 1,
    .resource   = &davinci_evm_norflash_resource,
};

/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
 * It may used instead of the (default) NOR chip to boot, using TI's
 * tools to install the secondary boot loader (UBL) and U-Boot.
 */
static struct mtd_partition davinci_evm_nandflash_partition[] = {
    /* Bootloader layout depends on whose u-boot is installed, but we
     * can hide all the details.
     *  - block 0 for u-boot environment ... in mainline u-boot
     *  - block 1 for UBL (plus up to four backup copies in blocks 2..5)
     *  - blocks 6...? for u-boot
     *  - blocks 16..23 for u-boot environment ... in TI's u-boot
     */
    {
        .name       = "bootloader",
        .offset     = 0,
        .size       = SZ_256K + SZ_128K,
        .mask_flags = MTD_WRITEABLE,    /* force read-only */
    },
    /* Kernel */
    {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_4M,
        .mask_flags = 0,
    },
    /* File system (older GIT kernels started this on the 5MB mark) */
    {
        .name       = "filesystem",
        .offset     = MTDPART_OFS_APPEND,
        .size       = MTDPART_SIZ_FULL,
        .mask_flags = 0,
    }
    /* A few blocks at end hold a flash BBT ... created by TI's CCS
     * using flashwriter_nand.out, but ignored by TI's versions of
     * Linux and u-boot.  We boot faster by using them.
     */
};

static struct davinci_aemif_timing davinci_evm_nandflash_timing = {
    .wsetup     = 20,
    .wstrobe    = 40,
    .whold      = 20,
    .rsetup     = 10,
    .rstrobe    = 40,
    .rhold      = 10,
    .ta     = 40,
};

static struct davinci_nand_pdata davinci_evm_nandflash_data = {
    .parts      = davinci_evm_nandflash_partition,
    .nr_parts   = ARRAY_SIZE(davinci_evm_nandflash_partition),
    .ecc_mode   = NAND_ECC_HW,
    .bbt_options    = NAND_BBT_USE_FLASH,
    .timing     = &davinci_evm_nandflash_timing,
};

static struct resource davinci_evm_nandflash_resource[] = {
    {
        .start      = DM644X_ASYNC_EMIF_DATA_CE0_BASE,
        .end        = DM644X_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
        .flags      = IORESOURCE_MEM,
    }, {
        .start      = DM644X_ASYNC_EMIF_CONTROL_BASE,
        .end        = DM644X_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
        .flags      = IORESOURCE_MEM,
    },
};

static struct platform_device davinci_evm_nandflash_device = {
    .name       = "davinci_nand",
    .id     = 0,
    .dev        = {
        .platform_data  = &davinci_evm_nandflash_data,
    },
    .num_resources  = ARRAY_SIZE(davinci_evm_nandflash_resource),
    .resource   = davinci_evm_nandflash_resource,
};

static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);

static struct platform_device davinci_fb_device = {
    .name       = "davincifb",
    .id     = -1,
    .dev = {
        .dma_mask       = &davinci_fb_dma_mask,
        .coherent_dma_mask      = DMA_BIT_MASK(32),
    },
    .num_resources = 0,
};

static struct tvp514x_platform_data dm644xevm_tvp5146_pdata = {
    .clk_polarity = 0,
    .hs_polarity = 1,
    .vs_polarity = 1
};

#define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
/* Inputs available at the TVP5146 */
static struct v4l2_input dm644xevm_tvp5146_inputs[] = {
    {
        .index = 0,
        .name = "Composite",
        .type = V4L2_INPUT_TYPE_CAMERA,
        .std = TVP514X_STD_ALL,
    },
    {
        .index = 1,
        .name = "S-Video",
        .type = V4L2_INPUT_TYPE_CAMERA,
        .std = TVP514X_STD_ALL,
    },
};

/*
 * this is the route info for connecting each input to decoder
 * ouput that goes to vpfe. There is a one to one correspondence
 * with tvp5146_inputs
 */
static struct vpfe_route dm644xevm_tvp5146_routes[] = {
    {
        .input = INPUT_CVBS_VI2B,
        .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
    },
    {
        .input = INPUT_SVIDEO_VI2C_VI1C,
        .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
    },
};

static struct vpfe_subdev_info dm644xevm_vpfe_sub_devs[] = {
    {
        .name = "tvp5146",
        .grp_id = 0,
        .num_inputs = ARRAY_SIZE(dm644xevm_tvp5146_inputs),
        .inputs = dm644xevm_tvp5146_inputs,
        .routes = dm644xevm_tvp5146_routes,
        .can_route = 1,
        .ccdc_if_params = {
            .if_type = VPFE_BT656,
            .hdpol = VPFE_PINPOL_POSITIVE,
            .vdpol = VPFE_PINPOL_POSITIVE,
        },
        .board_info = {
            I2C_BOARD_INFO("tvp5146", 0x5d),
            .platform_data = &dm644xevm_tvp5146_pdata,
        },
    },
};

static struct vpfe_config dm644xevm_capture_cfg = {
    .num_subdevs = ARRAY_SIZE(dm644xevm_vpfe_sub_devs),
    .i2c_adapter_id = 1,
    .sub_devs = dm644xevm_vpfe_sub_devs,
    .card_name = "DM6446 EVM",
    .ccdc = "DM6446 CCDC",
};

static struct platform_device rtc_dev = {
    .name           = "rtc_davinci_evm",
    .id             = -1,
};

static struct snd_platform_data dm644x_evm_snd_data;

/*----------------------------------------------------------------------*/

/*
 * I2C GPIO expanders
 */

#define PCF_Uxx_BASE(x) (DAVINCI_N_GPIO + ((x) * 8))


/* U2 -- LEDs */

static struct gpio_led evm_leds[] = {
    { .name = "DS8", .active_low = 1,
        .default_trigger = "heartbeat", },
    { .name = "DS7", .active_low = 1, },
    { .name = "DS6", .active_low = 1, },
    { .name = "DS5", .active_low = 1, },
    { .name = "DS4", .active_low = 1, },
    { .name = "DS3", .active_low = 1, },
    { .name = "DS2", .active_low = 1,
        .default_trigger = "mmc0", },
    { .name = "DS1", .active_low = 1,
        .default_trigger = "ide-disk", },
};

static const struct gpio_led_platform_data evm_led_data = {
    .num_leds   = ARRAY_SIZE(evm_leds),
    .leds       = evm_leds,
};

static struct platform_device *evm_led_dev;

static int
evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
    struct gpio_led *leds = evm_leds;
    int status;

    while (ngpio--) {
        leds->gpio = gpio++;
        leds++;
    }

    /* what an extremely annoying way to be forced to handle
     * device unregistration ...
     */
    evm_led_dev = platform_device_alloc("leds-gpio", 0);
    platform_device_add_data(evm_led_dev,
            &evm_led_data, sizeof evm_led_data);

    evm_led_dev->dev.parent = &client->dev;
    status = platform_device_add(evm_led_dev);
    if (status < 0) {
        platform_device_put(evm_led_dev);
        evm_led_dev = NULL;
    }
    return status;
}

static int
evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
    if (evm_led_dev) {
        platform_device_unregister(evm_led_dev);
        evm_led_dev = NULL;
    }
    return 0;
}

static struct pcf857x_platform_data pcf_data_u2 = {
    .gpio_base  = PCF_Uxx_BASE(0),
    .setup      = evm_led_setup,
    .teardown   = evm_led_teardown,
};


/* U18 - A/V clock generator and user switch */

static int sw_gpio;

static ssize_t
sw_show(struct device *d, struct device_attribute *a, char *buf)
{
    char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";

    strcpy(buf, s);
    return strlen(s);
}

static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);

static int
evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
    int status;

    /* export dip switch option */
    sw_gpio = gpio + 7;
    status = gpio_request(sw_gpio, "user_sw");
    if (status == 0)
        status = gpio_direction_input(sw_gpio);
    if (status == 0)
        status = device_create_file(&client->dev, &dev_attr_user_sw);
    else
        gpio_free(sw_gpio);
    if (status != 0)
        sw_gpio = -EINVAL;

    /* audio PLL:  48 kHz (vs 44.1 or 32), single rate (vs double) */
    gpio_request(gpio + 3, "pll_fs2");
    gpio_direction_output(gpio + 3, 0);

    gpio_request(gpio + 2, "pll_fs1");
    gpio_direction_output(gpio + 2, 0);

    gpio_request(gpio + 1, "pll_sr");
    gpio_direction_output(gpio + 1, 0);

    return 0;
}

static int
evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
    gpio_free(gpio + 1);
    gpio_free(gpio + 2);
    gpio_free(gpio + 3);

    if (sw_gpio > 0) {
        device_remove_file(&client->dev, &dev_attr_user_sw);
        gpio_free(sw_gpio);
    }
    return 0;
}

static struct pcf857x_platform_data pcf_data_u18 = {
    .gpio_base  = PCF_Uxx_BASE(1),
    .n_latch    = (1 << 3) | (1 << 2) | (1 << 1),
    .setup      = evm_u18_setup,
    .teardown   = evm_u18_teardown,
};


/* U35 - various I/O signals used to manage USB, CF, ATA, etc */

static int
evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
    /* p0 = nDRV_VBUS (initial:  don't supply it) */
    gpio_request(gpio + 0, "nDRV_VBUS");
    gpio_direction_output(gpio + 0, 1);

    /* p1 = VDDIMX_EN */
    gpio_request(gpio + 1, "VDDIMX_EN");
    gpio_direction_output(gpio + 1, 1);

    /* p2 = VLYNQ_EN */
    gpio_request(gpio + 2, "VLYNQ_EN");
    gpio_direction_output(gpio + 2, 1);

    /* p3 = n3V3_CF_RESET (initial: stay in reset) */
    gpio_request(gpio + 3, "nCF_RESET");
    gpio_direction_output(gpio + 3, 0);

    /* (p4 unused) */

    /* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
    gpio_request(gpio + 5, "WLAN_RESET");
    gpio_direction_output(gpio + 5, 1);

    /* p6 = nATA_SEL (initial: select) */
    gpio_request(gpio + 6, "nATA_SEL");
    gpio_direction_output(gpio + 6, 0);

    /* p7 = nCF_SEL (initial: deselect) */
    gpio_request(gpio + 7, "nCF_SEL");
    gpio_direction_output(gpio + 7, 1);

    return 0;
}

static int
evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
    gpio_free(gpio + 7);
    gpio_free(gpio + 6);
    gpio_free(gpio + 5);
    gpio_free(gpio + 3);
    gpio_free(gpio + 2);
    gpio_free(gpio + 1);
    gpio_free(gpio + 0);
    return 0;
}

static struct pcf857x_platform_data pcf_data_u35 = {
    .gpio_base  = PCF_Uxx_BASE(2),
    .setup      = evm_u35_setup,
    .teardown   = evm_u35_teardown,
};

/*----------------------------------------------------------------------*/

/* Most of this EEPROM is unused, but U-Boot uses some data:
 *  - 0x7f00, 6 bytes Ethernet Address
 *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
 *  - ... newer boards may have more
 */

static struct at24_platform_data eeprom_info = {
    .byte_len   = (256*1024) / 8,
    .page_size  = 64,
    .flags      = AT24_FLAG_ADDR16,
    .setup          = davinci_get_mac_addr,
    .context    = (void *)0x7f00,
};

/*
 * MSP430 supports RTC, card detection, input from IR remote, and
 * a bit more.  It triggers interrupts on GPIO(7) from pressing
 * buttons on the IR remote, and for card detect switches.
 */
static struct i2c_client *dm6446evm_msp;

static int dm6446evm_msp_probe(struct i2c_client *client,
        const struct i2c_device_id *id)
{
    dm6446evm_msp = client;
    return 0;
}

static int dm6446evm_msp_remove(struct i2c_client *client)
{
    dm6446evm_msp = NULL;
    return 0;
}

static const struct i2c_device_id dm6446evm_msp_ids[] = {
    { "dm6446evm_msp", 0, },
    { /* end of list */ },
};

static struct i2c_driver dm6446evm_msp_driver = {
    .driver.name    = "dm6446evm_msp",
    .id_table   = dm6446evm_msp_ids,
    .probe      = dm6446evm_msp_probe,
    .remove     = dm6446evm_msp_remove,
};

static int dm6444evm_msp430_get_pins(void)
{
    static const char txbuf[2] = { 2, 4, };
    char buf[4];
    struct i2c_msg msg[2] = {
        {
            .addr = dm6446evm_msp->addr,
            .flags = 0,
            .len = 2,
            .buf = (void __force *)txbuf,
        },
        {
            .addr = dm6446evm_msp->addr,
            .flags = I2C_M_RD,
            .len = 4,
            .buf = buf,
        },
    };
    int status;

    if (!dm6446evm_msp)
        return -ENXIO;

    /* Command 4 == get input state, returns port 2 and port3 data
     *   S Addr W [A] len=2 [A] cmd=4 [A]
     *   RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
     */
    status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
    if (status < 0)
        return status;

    dev_dbg(&dm6446evm_msp->dev,
        "PINS: %02x %02x %02x %02x\n",
        buf[0], buf[1], buf[2], buf[3]);

    return (buf[3] << 8) | buf[2];
}

static int dm6444evm_mmc_get_cd(int module)
{
    int status = dm6444evm_msp430_get_pins();

    return (status < 0) ? status : !(status & BIT(1));
}

static int dm6444evm_mmc_get_ro(int module)
{
    int status = dm6444evm_msp430_get_pins();

    return (status < 0) ? status : status & BIT(6 + 8);
}

static struct davinci_mmc_config dm6446evm_mmc_config = {
    .get_cd     = dm6444evm_mmc_get_cd,
    .get_ro     = dm6444evm_mmc_get_ro,
    .wires      = 4,
    .version    = MMC_CTLR_VERSION_1
};

static struct i2c_board_info __initdata i2c_info[] =  {
    {
        I2C_BOARD_INFO("dm6446evm_msp", 0x23),
    },
    {
        I2C_BOARD_INFO("pcf8574", 0x38),
        .platform_data  = &pcf_data_u2,
    },
    {
        I2C_BOARD_INFO("pcf8574", 0x39),
        .platform_data  = &pcf_data_u18,
    },
    {
        I2C_BOARD_INFO("pcf8574", 0x3a),
        .platform_data  = &pcf_data_u35,
    },
    {
        I2C_BOARD_INFO("24c256", 0x50),
        .platform_data  = &eeprom_info,
    },
    {
        I2C_BOARD_INFO("tlv320aic33", 0x1b),
    },
};

/* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz),
 * which requires 100 usec of idle bus after i2c writes sent to it.
 */
static struct davinci_i2c_platform_data i2c_pdata = {
    .bus_freq   = 20 /* kHz */,
    .bus_delay  = 100 /* usec */,
    .sda_pin        = 44,
    .scl_pin        = 43,
};

static void __init evm_init_i2c(void)
{
    davinci_init_i2c(&i2c_pdata);
    i2c_add_driver(&dm6446evm_msp_driver);
    i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}

#define VENC_STD_ALL    (V4L2_STD_NTSC | V4L2_STD_PAL)

/* venc standard timings */
static struct vpbe_enc_mode_info dm644xevm_enc_std_timing[] = {
    {
        .name       = "ntsc",
        .timings_type   = VPBE_ENC_STD,
        .std_id     = V4L2_STD_525_60,
        .interlaced = 1,
        .xres       = 720,
        .yres       = 480,
        .aspect     = {11, 10},
        .fps        = {30000, 1001},
        .left_margin    = 0x79,
        .upper_margin   = 0x10,
    },
    {
        .name       = "pal",
        .timings_type   = VPBE_ENC_STD,
        .std_id     = V4L2_STD_625_50,
        .interlaced = 1,
        .xres       = 720,
        .yres       = 576,
        .aspect     = {54, 59},
        .fps        = {25, 1},
        .left_margin    = 0x7e,
        .upper_margin   = 0x16,
    },
};

/* venc dv preset timings */
static struct vpbe_enc_mode_info dm644xevm_enc_preset_timing[] = {
    {
        .name       = "480p59_94",
        .timings_type   = VPBE_ENC_CUSTOM_TIMINGS,
        .dv_timings = V4L2_DV_BT_CEA_720X480P59_94,
        .interlaced = 0,
        .xres       = 720,
        .yres       = 480,
        .aspect     = {1, 1},
        .fps        = {5994, 100},
        .left_margin    = 0x80,
        .upper_margin   = 0x20,
    },
    {
        .name       = "576p50",
        .timings_type   = VPBE_ENC_CUSTOM_TIMINGS,
        .dv_timings = V4L2_DV_BT_CEA_720X576P50,
        .interlaced = 0,
        .xres       = 720,
        .yres       = 576,
        .aspect     = {1, 1},
        .fps        = {50, 1},
        .left_margin    = 0x7e,
        .upper_margin   = 0x30,
    },
};

/*
 * The outputs available from VPBE + encoders. Keep the order same
 * as that of encoders. First those from venc followed by that from
 * encoders. Index in the output refers to index on a particular encoder.
 * Driver uses this index to pass it to encoder when it supports more
 * than one output. Userspace applications use index of the array to
 * set an output.
 */
static struct vpbe_output dm644xevm_vpbe_outputs[] = {
    {
        .output     = {
            .index      = 0,
            .name       = "Composite",
            .type       = V4L2_OUTPUT_TYPE_ANALOG,
            .std        = VENC_STD_ALL,
            .capabilities   = V4L2_OUT_CAP_STD,
        },
        .subdev_name    = VPBE_VENC_SUBDEV_NAME,
        .default_mode   = "ntsc",
        .num_modes  = ARRAY_SIZE(dm644xevm_enc_std_timing),
        .modes      = dm644xevm_enc_std_timing,
    },
    {
        .output     = {
            .index      = 1,
            .name       = "Component",
            .type       = V4L2_OUTPUT_TYPE_ANALOG,
            .capabilities   = V4L2_OUT_CAP_DV_TIMINGS,
        },
        .subdev_name    = VPBE_VENC_SUBDEV_NAME,
        .default_mode   = "480p59_94",
        .num_modes  = ARRAY_SIZE(dm644xevm_enc_preset_timing),
        .modes      = dm644xevm_enc_preset_timing,
    },
};

static struct vpbe_config dm644xevm_display_cfg = {
    .module_name    = "dm644x-vpbe-display",
    .i2c_adapter_id = 1,
    .osd        = {
        .module_name    = VPBE_OSD_SUBDEV_NAME,
    },
    .venc       = {
        .module_name    = VPBE_VENC_SUBDEV_NAME,
    },
    .num_outputs    = ARRAY_SIZE(dm644xevm_vpbe_outputs),
    .outputs    = dm644xevm_vpbe_outputs,
};

static struct platform_device *davinci_evm_devices[] __initdata = {
    &davinci_fb_device,
    &rtc_dev,
};

static struct davinci_uart_config uart_config __initdata = {
    .enabled_uarts = (1 << 0),
};

static void __init
davinci_evm_map_io(void)
{
    dm644x_init();
}

static int davinci_phy_fixup(struct phy_device *phydev)
{
    unsigned int control;
    /* CRITICAL: Fix for increasing PHY signal drive strength for
     * TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
     * signal strength was low causing  TX to fail randomly. The
     * fix is to Set bit 11 (Increased MII drive strength) of PHY
     * register 26 (Digital Config register) on this phy. */
    control = phy_read(phydev, 26);
    phy_write(phydev, 26, (control | 0x800));
    return 0;
}

#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
#define HAS_ATA 1
#else
#define HAS_ATA 0
#endif

#if defined(CONFIG_MTD_PHYSMAP) || \
    defined(CONFIG_MTD_PHYSMAP_MODULE)
#define HAS_NOR 1
#else
#define HAS_NOR 0
#endif

#if defined(CONFIG_MTD_NAND_DAVINCI) || \
    defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
#define HAS_NAND 1
#else
#define HAS_NAND 0
#endif

static __init void davinci_evm_init(void)
{
    struct clk *aemif_clk;
    struct davinci_soc_info *soc_info = &davinci_soc_info;

    aemif_clk = clk_get(NULL, "aemif");
    clk_enable(aemif_clk);

    if (HAS_ATA) {
        if (HAS_NAND || HAS_NOR)
            pr_warning("WARNING: both IDE and Flash are "
                "enabled, but they share AEMIF pins.\n"
                "\tDisable IDE for NAND/NOR support.\n");
        davinci_init_ide();
    } else if (HAS_NAND || HAS_NOR) {
        davinci_cfg_reg(DM644X_HPIEN_DISABLE);
        davinci_cfg_reg(DM644X_ATAEN_DISABLE);

        /* only one device will be jumpered and detected */
        if (HAS_NAND) {
            platform_device_register(&davinci_evm_nandflash_device);
            evm_leds[7].default_trigger = "nand-disk";
            if (HAS_NOR)
                pr_warning("WARNING: both NAND and NOR flash "
                    "are enabled; disable one of them.\n");
        } else if (HAS_NOR)
            platform_device_register(&davinci_evm_norflash_device);
    }

    platform_add_devices(davinci_evm_devices,
                 ARRAY_SIZE(davinci_evm_devices));
    evm_init_i2c();

    davinci_setup_mmc(0, &dm6446evm_mmc_config);
    dm644x_init_video(&dm644xevm_capture_cfg, &dm644xevm_display_cfg);

    davinci_serial_init(&uart_config);
    dm644x_init_asp(&dm644x_evm_snd_data);

    /* irlml6401 switches over 1A, in under 8 msec */
    davinci_setup_usb(1000, 8);

    soc_info->emac_pdata->phy_id = DM644X_EVM_PHY_ID;
    /* Register the fixup for PHY on DaVinci */
    phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
                    davinci_phy_fixup);

}

MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
    /* Maintainer: MontaVista Software <[email protected]> */
    .atag_offset  = 0x100,
    .map_io       = davinci_evm_map_io,
    .init_irq     = davinci_irq_init,
    .timer        = &davinci_timer,
    .init_machine = davinci_evm_init,
    .init_late  = davinci_init_late,
    .dma_zone_size  = SZ_128M,
    .restart    = davinci_restart,
MACHINE_END