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
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