kernel-ark/arch/mips/bcm47xx/serial.c
Hauke Mehrtens c1d1c5d421 bcm47xx: add support for bcma bus
This patch add support for the bcma bus. Broadcom uses only Mips 74K
CPUs on the new SoC and on the old ons using ssb bus there are no Mips
74K CPUs.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-08 14:29:32 -04:00

95 lines
2.4 KiB
C

/*
* 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 <aurelien@aurel32.net>
*/
#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 <aurelien@aurel32.net>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("8250 UART probe driver for the BCM47XX platforms");