openrd-setup.c

Go to the documentation of this file.

/*
 * arch/arm/mach-kirkwood/openrd-setup.c
 *
 * Marvell OpenRD (Base|Client|Ultimate) Board Setup
 *
 * 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/platform_device.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/ata_platform.h>
#include <linux/mv643xx_eth.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/kirkwood.h>
#include <linux/platform_data/mmc-mvsdio.h>
#include "common.h"
#include "mpp.h"

static struct mtd_partition openrd_nand_parts[] = {
    {
        .name       = "u-boot",
        .offset     = 0,
        .size       = SZ_1M,
        .mask_flags = MTD_WRITEABLE
    }, {
        .name       = "uImage",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = SZ_4M
    }, {
        .name       = "root",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = MTDPART_SIZ_FULL
    },
};

static struct mv643xx_eth_platform_data openrd_ge00_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

static struct mv643xx_eth_platform_data openrd_ge01_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(24),
};

static struct mv_sata_platform_data openrd_sata_data = {
    .n_ports    = 2,
};

static struct mvsdio_platform_data openrd_mvsdio_data = {
    .gpio_card_detect = 29, /* MPP29 used as SD card detect */
};

static unsigned int openrd_mpp_config[] __initdata = {
    MPP12_SD_CLK,
    MPP13_SD_CMD,
    MPP14_SD_D0,
    MPP15_SD_D1,
    MPP16_SD_D2,
    MPP17_SD_D3,
    MPP28_GPIO,
    MPP29_GPIO,
    MPP34_GPIO,
    0
};

/* Configure MPP for UART1 */
static unsigned int openrd_uart1_mpp_config[] __initdata = {
    MPP13_UART1_TXD,
    MPP14_UART1_RXD,
    0
};

static struct i2c_board_info i2c_board_info[] __initdata = {
    {
        I2C_BOARD_INFO("cs42l51", 0x4a),
    },
};

static struct platform_device openrd_client_audio_device = {
    .name       = "openrd-client-audio",
    .id     = -1,
};

static int __initdata uart1;

static int __init sd_uart_selection(char *str)
{
    uart1 = -EINVAL;

    /* Default is SD. Change if required, for UART */
    if (!str)
        return 0;

    if (!strncmp(str, "232", 3)) {
        uart1 = 232;
    } else if (!strncmp(str, "485", 3)) {
        /* OpenRD-Base doesn't have RS485. Treat is as an
         * unknown argument & just have default setting -
         * which is SD */
        if (machine_is_openrd_base()) {
            uart1 = -ENODEV;
            return 1;
        }

        uart1 = 485;
    }
    return 1;
}
/* Parse boot_command_line string kw_openrd_init_uart1=232/485 */
__setup("kw_openrd_init_uart1=", sd_uart_selection);

static int __init uart1_mpp_config(void)
{
    kirkwood_mpp_conf(openrd_uart1_mpp_config);

    if (gpio_request(34, "SD_UART1_SEL")) {
        printk(KERN_ERR "GPIO request failed for SD/UART1 selection"
                ", gpio: 34\n");
        return -EIO;
    }

    if (gpio_request(28, "RS232_RS485_SEL")) {
        printk(KERN_ERR "GPIO request failed for RS232/RS485 selection"
                ", gpio# 28\n");
        gpio_free(34);
        return -EIO;
    }

    /* Select UART1
     * Pin # 34: 0 => UART1, 1 => SD */
    gpio_direction_output(34, 0);

    /* Select RS232 OR RS485
     * Pin # 28: 0 => RS232, 1 => RS485 */
    if (uart1 == 232)
        gpio_direction_output(28, 0);
    else
        gpio_direction_output(28, 1);

    gpio_free(34);
    gpio_free(28);

    return 0;
}

static void __init openrd_init(void)
{
    /*
     * Basic setup. Needs to be called early.
     */
    kirkwood_init();
    kirkwood_mpp_conf(openrd_mpp_config);

    kirkwood_uart0_init();
    kirkwood_nand_init(ARRAY_AND_SIZE(openrd_nand_parts), 25);

    kirkwood_ehci_init();

    if (machine_is_openrd_ultimate()) {
        openrd_ge00_data.phy_addr = MV643XX_ETH_PHY_ADDR(0);
        openrd_ge01_data.phy_addr = MV643XX_ETH_PHY_ADDR(1);
    }

    kirkwood_ge00_init(&openrd_ge00_data);
    if (!machine_is_openrd_base())
        kirkwood_ge01_init(&openrd_ge01_data);

    kirkwood_sata_init(&openrd_sata_data);

    kirkwood_i2c_init();

    if (machine_is_openrd_client() || machine_is_openrd_ultimate()) {
        platform_device_register(&openrd_client_audio_device);
        i2c_register_board_info(0, i2c_board_info,
            ARRAY_SIZE(i2c_board_info));
        kirkwood_audio_init();
    }

    if (uart1 <= 0) {
        if (uart1 < 0)
            printk(KERN_ERR "Invalid kernel parameter to select "
                "UART1. Defaulting to SD. ERROR CODE: %d\n",
                uart1);

        /* Select SD
         * Pin # 34: 0 => UART1, 1 => SD */
        if (gpio_request(34, "SD_UART1_SEL")) {
            printk(KERN_ERR "GPIO request failed for SD/UART1 "
                    "selection, gpio: 34\n");
        } else {

            gpio_direction_output(34, 1);
            gpio_free(34);
            kirkwood_sdio_init(&openrd_mvsdio_data);
        }
    } else {
        if (!uart1_mpp_config())
            kirkwood_uart1_init();
    }
}

static int __init openrd_pci_init(void)
{
    if (machine_is_openrd_base() ||
        machine_is_openrd_client() ||
        machine_is_openrd_ultimate())
        kirkwood_pcie_init(KW_PCIE0);

    return 0;
}
subsys_initcall(openrd_pci_init);

#ifdef CONFIG_MACH_OPENRD_BASE
MACHINE_START(OPENRD_BASE, "Marvell OpenRD Base Board")
    /* Maintainer: Dhaval Vasa <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = openrd_init,
    .map_io     = kirkwood_map_io,
    .init_early = kirkwood_init_early,
    .init_irq   = kirkwood_init_irq,
    .timer      = &kirkwood_timer,
    .restart    = kirkwood_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_OPENRD_CLIENT
MACHINE_START(OPENRD_CLIENT, "Marvell OpenRD Client Board")
    /* Maintainer: Dhaval Vasa <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = openrd_init,
    .map_io     = kirkwood_map_io,
    .init_early = kirkwood_init_early,
    .init_irq   = kirkwood_init_irq,
    .timer      = &kirkwood_timer,
    .restart    = kirkwood_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_OPENRD_ULTIMATE
MACHINE_START(OPENRD_ULTIMATE, "Marvell OpenRD Ultimate Board")
    /* Maintainer: Dhaval Vasa <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = openrd_init,
    .map_io     = kirkwood_map_io,
    .init_early = kirkwood_init_early,
    .init_irq   = kirkwood_init_irq,
    .timer      = &kirkwood_timer,
    .restart    = kirkwood_restart,
MACHINE_END
#endif