mm-imx21.c

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/*
 * arch/arm/mach-imx/mm-imx21.c
 *
 * Copyright (C) 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
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/pinctrl/machine.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/devices-common.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
#include <mach/iomux-v1.h>

/* MX21 memory map definition */
static struct map_desc imx21_io_desc[] __initdata = {
    /*
     * this fixed mapping covers:
     * - AIPI1
     * - AIPI2
     * - AITC
     * - ROM Patch
     * - and some reserved space
     */
    imx_map_entry(MX21, AIPI, MT_DEVICE),
    /*
     * this fixed mapping covers:
     * - CSI
     * - ATA
     */
    imx_map_entry(MX21, SAHB1, MT_DEVICE),
    /*
     * this fixed mapping covers:
     * - EMI
     */
    imx_map_entry(MX21, X_MEMC, MT_DEVICE),
};

/*
 * Initialize the memory map. It is called during the
 * system startup to create static physical to virtual
 * memory map for the IO modules.
 */
void __init mx21_map_io(void)
{
    iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
}

void __init imx21_init_early(void)
{
    mxc_set_cpu_type(MXC_CPU_MX21);
    mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
    imx_iomuxv1_init(MX21_IO_ADDRESS(MX21_GPIO_BASE_ADDR),
            MX21_NUM_GPIO_PORT);
}

void __init mx21_init_irq(void)
{
    mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
}

static const struct resource imx21_audmux_res[] __initconst = {
    DEFINE_RES_MEM(MX21_AUDMUX_BASE_ADDR, SZ_4K),
};

void __init imx21_soc_init(void)
{
    mxc_register_gpio("imx21-gpio", 0, MX21_GPIO1_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
    mxc_register_gpio("imx21-gpio", 1, MX21_GPIO2_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
    mxc_register_gpio("imx21-gpio", 2, MX21_GPIO3_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
    mxc_register_gpio("imx21-gpio", 3, MX21_GPIO4_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
    mxc_register_gpio("imx21-gpio", 4, MX21_GPIO5_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
    mxc_register_gpio("imx21-gpio", 5, MX21_GPIO6_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);

    pinctrl_provide_dummies();
    imx_add_imx_dma();
    platform_device_register_simple("imx21-audmux", 0, imx21_audmux_res,
                    ARRAY_SIZE(imx21_audmux_res));
}