dev-dsp.c

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/*
 * Broadcom BCM63xx VoIP DSP registration
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2009 Florian Fainelli <[email protected]>
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>

#include <bcm63xx_cpu.h>
#include <bcm63xx_dev_dsp.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>

static struct resource voip_dsp_resources[] = {
    {
        .start      = -1, /* filled at runtime */
        .end        = -1, /* filled at runtime */
        .flags      = IORESOURCE_MEM,
    },
    {
        .start      = -1, /* filled at runtime */
        .flags      = IORESOURCE_IRQ,
    },
};

static struct platform_device bcm63xx_voip_dsp_device = {
    .name       = "bcm63xx-voip-dsp",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(voip_dsp_resources),
    .resource   = voip_dsp_resources,
};

int __init bcm63xx_dsp_register(const struct bcm63xx_dsp_platform_data *pd)
{
    struct bcm63xx_dsp_platform_data *dpd;
    u32 val;

    /* Get the memory window */
    val = bcm_mpi_readl(MPI_CSBASE_REG(pd->cs - 1));
    val &= MPI_CSBASE_BASE_MASK;
    voip_dsp_resources[0].start = val;
    voip_dsp_resources[0].end = val + 0xFFFFFFF;
    voip_dsp_resources[1].start = pd->ext_irq;

    /* copy given platform data */
    dpd = bcm63xx_voip_dsp_device.dev.platform_data;
    memcpy(dpd, pd, sizeof (*pd));

    return platform_device_register(&bcm63xx_voip_dsp_device);
}