mach-scb9328.c

Go to the documentation of this file.

/*
 * linux/arch/arm/mach-mx1/mach-scb9328.c
 *
 * Copyright (c) 2004 Sascha Hauer <[email protected]>
 * Copyright (c) 2006-2008 Juergen Beisert <[email protected]>
 *
 * 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/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/interrupt.h>
#include <linux/dm9000.h>
#include <linux/gpio.h>

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

#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx1.h>

#include "devices-imx1.h"

/*
 * This scb9328 has a 32MiB flash
 */
static struct resource flash_resource = {
    .start  = MX1_CS0_PHYS,
    .end    = MX1_CS0_PHYS + (32 * 1024 * 1024) - 1,
    .flags  = IORESOURCE_MEM,
};

static struct physmap_flash_data scb_flash_data = {
    .width  = 2,
};

static struct platform_device scb_flash_device = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev = {
        .platform_data = &scb_flash_data,
    },
    .resource = &flash_resource,
    .num_resources = 1,
};

/*
 * scb9328 has a DM9000 network controller
 * connected to CS5, with 16 bit data path
 * and interrupt connected to GPIO 3
 */

/*
 * internal datapath is fixed 16 bit
 */
static struct dm9000_plat_data dm9000_platdata = {
    .flags  = DM9000_PLATF_16BITONLY,
};

/*
 * the DM9000 drivers wants two defined address spaces
 * to gain access to address latch registers and the data path.
 */
static struct resource dm9000x_resources[] = {
    {
        .name   = "address area",
        .start  = MX1_CS5_PHYS,
        .end    = MX1_CS5_PHYS + 1,
        .flags  = IORESOURCE_MEM,   /* address access */
    }, {
        .name   = "data area",
        .start  = MX1_CS5_PHYS + 4,
        .end    = MX1_CS5_PHYS + 5,
        .flags  = IORESOURCE_MEM,   /* data access */
    }, {
        /* irq number is run-time assigned */
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
    },
};

static struct platform_device dm9000x_device = {
    .name       = "dm9000",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(dm9000x_resources),
    .resource   = dm9000x_resources,
    .dev        = {
        .platform_data = &dm9000_platdata,
    }
};

static const int mxc_uart1_pins[] = {
    PC9_PF_UART1_CTS,
    PC10_PF_UART1_RTS,
    PC11_PF_UART1_TXD,
    PC12_PF_UART1_RXD,
};

static const struct imxuart_platform_data uart_pdata __initconst = {
    .flags = IMXUART_HAVE_RTSCTS,
};

static struct platform_device *devices[] __initdata = {
    &scb_flash_device,
    &dm9000x_device,
};

/*
 * scb9328_init - Init the CPU card itself
 */
static void __init scb9328_init(void)
{
    imx1_soc_init();

    mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
            ARRAY_SIZE(mxc_uart1_pins), "UART1");

    imx1_add_imx_uart0(&uart_pdata);

    printk(KERN_INFO"Scb9328: Adding devices\n");
    dm9000x_resources[2].start = gpio_to_irq(IMX_GPIO_NR(3, 3));
    dm9000x_resources[2].end = gpio_to_irq(IMX_GPIO_NR(3, 3));
    platform_add_devices(devices, ARRAY_SIZE(devices));
}

static void __init scb9328_timer_init(void)
{
    mx1_clocks_init(32000);
}

static struct sys_timer scb9328_timer = {
    .init   = scb9328_timer_init,
};

MACHINE_START(SCB9328, "Synertronixx scb9328")
    /* Sascha Hauer */
    .atag_offset = 100,
    .map_io = mx1_map_io,
    .init_early = imx1_init_early,
    .init_irq = mx1_init_irq,
    .handle_irq = imx1_handle_irq,
    .timer = &scb9328_timer,
    .init_machine = scb9328_init,
    .restart    = mxc_restart,
MACHINE_END