1/*
2 * 8250 UART probe driver for the BCM47XX platforms
3 * Author: Aurelien Jarno
4 *
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License.  See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
10 */
11
12#include <linux/init.h>
13#include <linux/serial.h>
14#include <linux/serial_8250.h>
15#include <linux/ssb/ssb.h>
16#include <bcm47xx.h>
17
18static struct plat_serial8250_port uart8250_data[5];
19
20static struct platform_device uart8250_device = {
21	.name			= "serial8250",
22	.id			= PLAT8250_DEV_PLATFORM,
23	.dev			= {
24		.platform_data	= uart8250_data,
25	},
26};
27
28#ifdef CONFIG_BCM47XX_SSB
29static int __init uart8250_init_ssb(void)
30{
31	int i;
32	struct ssb_mipscore *mcore = &(bcm47xx_bus.ssb.mipscore);
33
34	memset(&uart8250_data, 0,  sizeof(uart8250_data));
35
36	for (i = 0; i < mcore->nr_serial_ports &&
37		    i < ARRAY_SIZE(uart8250_data) - 1; i++) {
38		struct plat_serial8250_port *p = &(uart8250_data[i]);
39		struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);
40
41		p->mapbase = (unsigned int)ssb_port->regs;
42		p->membase = (void *)ssb_port->regs;
43		p->irq = ssb_port->irq + 2;
44		p->uartclk = ssb_port->baud_base;
45		p->regshift = ssb_port->reg_shift;
46		p->iotype = UPIO_MEM;
47		p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
48	}
49	return platform_device_register(&uart8250_device);
50}
51#endif
52
53#ifdef CONFIG_BCM47XX_BCMA
54static int __init uart8250_init_bcma(void)
55{
56	int i;
57	struct bcma_drv_cc *cc = &(bcm47xx_bus.bcma.bus.drv_cc);
58
59	memset(&uart8250_data, 0,  sizeof(uart8250_data));
60
61	for (i = 0; i < cc->nr_serial_ports &&
62		    i < ARRAY_SIZE(uart8250_data) - 1; i++) {
63		struct plat_serial8250_port *p = &(uart8250_data[i]);
64		struct bcma_serial_port *bcma_port;
65		bcma_port = &(cc->serial_ports[i]);
66
67		p->mapbase = (unsigned int)bcma_port->regs;
68		p->membase = (void *)bcma_port->regs;
69		p->irq = bcma_port->irq;
70		p->uartclk = bcma_port->baud_base;
71		p->regshift = bcma_port->reg_shift;
72		p->iotype = UPIO_MEM;
73		p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
74	}
75	return platform_device_register(&uart8250_device);
76}
77#endif
78
79static int __init uart8250_init(void)
80{
81	switch (bcm47xx_bus_type) {
82#ifdef CONFIG_BCM47XX_SSB
83	case BCM47XX_BUS_TYPE_SSB:
84		return uart8250_init_ssb();
85#endif
86#ifdef CONFIG_BCM47XX_BCMA
87	case BCM47XX_BUS_TYPE_BCMA:
88		return uart8250_init_bcma();
89#endif
90	}
91	return -EINVAL;
92}
93device_initcall(uart8250_init);
94