/*
 * TI DaVinci EVM board support
 *
 * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
 *
 * 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/gpio/machine.h>
#include <linux/i2c.h>
#include <linux/platform_data/pcf857x.h>
#include <linux/platform_data/at24.h>
#include <linux/platform_data/gpio-davinci.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.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 <linux/leds.h>

#include <media/i2c/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 = {
        .core_chipsel   = 0,
        .parts          = davinci_evm_nandflash_partition,
        .nr_parts       = ARRAY_SIZE(davinci_evm_nandflash_partition),
        .ecc_mode       = NAND_ECC_HW,
        .ecc_bits       = 1,
        .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,
};

/*----------------------------------------------------------------------*/
#ifdef CONFIG_I2C
/*
 * 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 = "disk-activity", },
};

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] = {
                {
                        .flags = 0,
                        .len = 2,
                        .buf = (void __force *)txbuf,
                },
                {
                        .flags = I2C_M_RD,
                        .len = 4,
                        .buf = buf,
                },
        };
        int status;

        if (!dm6446evm_msp)
                return -ENXIO;

        msg[0].addr = dm6446evm_msp->addr;
        msg[1].addr = dm6446evm_msp->addr;

        /* 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: %4ph\n", buf);

        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,
};

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),
        },
};

#define DM644X_I2C_SDA_PIN      GPIO_TO_PIN(2, 12)
#define DM644X_I2C_SCL_PIN      GPIO_TO_PIN(2, 11)

static struct gpiod_lookup_table i2c_recovery_gpiod_table = {
        .dev_id = "i2c_davinci.1",
        .table = {
                GPIO_LOOKUP("davinci_gpio.0", DM644X_I2C_SDA_PIN, "sda",
                            GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
                GPIO_LOOKUP("davinci_gpio.0", DM644X_I2C_SCL_PIN, "scl",
                            GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
        },
};

/* 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 */,
        .gpio_recovery  = true,
};

static void __init evm_init_i2c(void)
{
        gpiod_add_lookup_table(&i2c_recovery_gpiod_table);
        davinci_init_i2c(&i2c_pdata);
        i2c_add_driver(&dm6446evm_msp_driver);
        i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}
#endif

#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_NTSC,
                .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_PAL,
                .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_DV_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_DV_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    = DM644X_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    = DM644X_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    = DM644X_VPBE_OSD_SUBDEV_NAME,
        },
        .venc           = {
                .module_name    = DM644X_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 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;
}

#define HAS_ATA         (IS_ENABLED(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
                         IS_ENABLED(CONFIG_PATA_BK3710))

#define HAS_NOR         IS_ENABLED(CONFIG_MTD_PHYSMAP)

#define HAS_NAND        IS_ENABLED(CONFIG_MTD_NAND_DAVINCI)

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

        dm644x_init_devices();

        ret = dm644x_gpio_register();
        if (ret)
                pr_warn("%s: GPIO init failed: %d\n", __func__, ret);

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

        if (HAS_ATA) {
                if (HAS_NAND || HAS_NOR)
                        pr_warn("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);

                        if (davinci_aemif_setup(&davinci_evm_nandflash_device))
                                pr_warn("%s: Cannot configure AEMIF\n",
                                        __func__);

#ifdef CONFIG_I2C
                        evm_leds[7].default_trigger = "nand-disk";
#endif
                        if (HAS_NOR)
                                pr_warn("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));
#ifdef CONFIG_I2C
        evm_init_i2c();
        davinci_setup_mmc(0, &dm6446evm_mmc_config);
#endif
        dm644x_init_video(&dm644xevm_capture_cfg, &dm644xevm_display_cfg);

        davinci_serial_init(dm644x_serial_device);
        dm644x_init_asp();

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

        if (IS_BUILTIN(CONFIG_PHYLIB)) {
                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 <source@mvista.com> */
        .atag_offset  = 0x100,
        .map_io       = davinci_evm_map_io,
        .init_irq     = davinci_irq_init,
        .init_time      = dm644x_init_time,
        .init_machine = davinci_evm_init,
        .init_late      = davinci_init_late,
        .dma_zone_size  = SZ_128M,
MACHINE_END