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