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 | |
18 | static struct plat_serial8250_port uart8250_data[5]; |
19 | |
20 | static 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 |
29 | static 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 |
54 | static 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 | |
79 | static 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 | } |
93 | device_initcall(uart8250_init); |
94 | |