serial.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) 2007 Aurelien Jarno <[email protected]>
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/ssb/ssb.h>
#include <bcm47xx.h>

static struct plat_serial8250_port uart8250_data[5];

static struct platform_device uart8250_device = {
    .name           = "serial8250",
    .id         = PLAT8250_DEV_PLATFORM,
    .dev            = {
        .platform_data  = uart8250_data,
    },
};

#ifdef CONFIG_BCM47XX_SSB
static int __init uart8250_init_ssb(void)
{
    int i;
    struct ssb_mipscore *mcore = &(bcm47xx_bus.ssb.mipscore);

    memset(&uart8250_data, 0,  sizeof(uart8250_data));

    for (i = 0; i < mcore->nr_serial_ports; i++) {
        struct plat_serial8250_port *p = &(uart8250_data[i]);
        struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);

        p->mapbase = (unsigned int) ssb_port->regs;
        p->membase = (void *) ssb_port->regs;
        p->irq = ssb_port->irq + 2;
        p->uartclk = ssb_port->baud_base;
        p->regshift = ssb_port->reg_shift;
        p->iotype = UPIO_MEM;
        p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
    }
    return platform_device_register(&uart8250_device);
}
#endif

#ifdef CONFIG_BCM47XX_BCMA
static int __init uart8250_init_bcma(void)
{
    int i;
    struct bcma_drv_cc *cc = &(bcm47xx_bus.bcma.bus.drv_cc);

    memset(&uart8250_data, 0,  sizeof(uart8250_data));

    for (i = 0; i < cc->nr_serial_ports; i++) {
        struct plat_serial8250_port *p = &(uart8250_data[i]);
        struct bcma_serial_port *bcma_port;
        bcma_port = &(cc->serial_ports[i]);

        p->mapbase = (unsigned int) bcma_port->regs;
        p->membase = (void *) bcma_port->regs;
        p->irq = bcma_port->irq + 2;
        p->uartclk = bcma_port->baud_base;
        p->regshift = bcma_port->reg_shift;
        p->iotype = UPIO_MEM;
        p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
    }
    return platform_device_register(&uart8250_device);
}
#endif

static int __init uart8250_init(void)
{
    switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
    case BCM47XX_BUS_TYPE_SSB:
        return uart8250_init_ssb();
#endif
#ifdef CONFIG_BCM47XX_BCMA
    case BCM47XX_BUS_TYPE_BCMA:
        return uart8250_init_bcma();
#endif
    }
    return -EINVAL;
}

module_init(uart8250_init);

MODULE_AUTHOR("Aurelien Jarno <[email protected]>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("8250 UART probe driver for the BCM47XX platforms");