dev-usb-usbd.c

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/*
 * 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) 2008 Maxime Bizon <[email protected]>
 * Copyright (C) 2012 Kevin Cernekee <[email protected]>
 * Copyright (C) 2012 Broadcom Corporation
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_dev_usb_usbd.h>

#define NUM_MMIO        2
#define NUM_IRQ         7

static struct resource usbd_resources[NUM_MMIO + NUM_IRQ];

static u64 usbd_dmamask = DMA_BIT_MASK(32);

static struct platform_device bcm63xx_usbd_device = {
    .name       = "bcm63xx_udc",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(usbd_resources),
    .resource   = usbd_resources,
    .dev        = {
        .dma_mask       = &usbd_dmamask,
        .coherent_dma_mask  = DMA_BIT_MASK(32),
    },
};

int __init bcm63xx_usbd_register(const struct bcm63xx_usbd_platform_data *pd)
{
    const int irq_list[NUM_IRQ] = { IRQ_USBD,
        IRQ_USBD_RXDMA0, IRQ_USBD_TXDMA0,
        IRQ_USBD_RXDMA1, IRQ_USBD_TXDMA1,
        IRQ_USBD_RXDMA2, IRQ_USBD_TXDMA2 };
    int i;

    if (!BCMCPU_IS_6328() && !BCMCPU_IS_6368())
        return 0;

    usbd_resources[0].start = bcm63xx_regset_address(RSET_USBD);
    usbd_resources[0].end = usbd_resources[0].start + RSET_USBD_SIZE - 1;
    usbd_resources[0].flags = IORESOURCE_MEM;

    usbd_resources[1].start = bcm63xx_regset_address(RSET_USBDMA);
    usbd_resources[1].end = usbd_resources[1].start + RSET_USBDMA_SIZE - 1;
    usbd_resources[1].flags = IORESOURCE_MEM;

    for (i = 0; i < NUM_IRQ; i++) {
        struct resource *r = &usbd_resources[NUM_MMIO + i];

        r->start = r->end = bcm63xx_get_irq_number(irq_list[i]);
        r->flags = IORESOURCE_IRQ;
    }

    platform_device_add_data(&bcm63xx_usbd_device, pd, sizeof(*pd));

    return platform_device_register(&bcm63xx_usbd_device);
}