xref: /linux/arch/mips/bcm63xx/dev-uart.c (revision f5c31bcf604db54470868f3118a60dc4a9ba8813)
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) 2008 Maxime Bizon <mbizon@freebox.fr>
7  */
8 
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/platform_device.h>
12 #include <bcm63xx_cpu.h>
13 #include <bcm63xx_dev_uart.h>
14 
15 static struct resource uart0_resources[] = {
16 	{
17 		/* start & end filled at runtime */
18 		.flags		= IORESOURCE_MEM,
19 	},
20 	{
21 		/* start filled at runtime */
22 		.flags		= IORESOURCE_IRQ,
23 	},
24 };
25 
26 static struct resource uart1_resources[] = {
27 	{
28 		/* start & end filled at runtime */
29 		.flags		= IORESOURCE_MEM,
30 	},
31 	{
32 		/* start filled at runtime */
33 		.flags		= IORESOURCE_IRQ,
34 	},
35 };
36 
37 static struct platform_device bcm63xx_uart_devices[] = {
38 	{
39 		.name		= "bcm63xx_uart",
40 		.id		= 0,
41 		.num_resources	= ARRAY_SIZE(uart0_resources),
42 		.resource	= uart0_resources,
43 	},
44 
45 	{
46 		.name		= "bcm63xx_uart",
47 		.id		= 1,
48 		.num_resources	= ARRAY_SIZE(uart1_resources),
49 		.resource	= uart1_resources,
50 	}
51 };
52 
53 int __init bcm63xx_uart_register(unsigned int id)
54 {
55 	if (id >= ARRAY_SIZE(bcm63xx_uart_devices))
56 		return -ENODEV;
57 
58 	if (id == 1 && (!BCMCPU_IS_3368() && !BCMCPU_IS_6358() &&
59 		!BCMCPU_IS_6368()))
60 		return -ENODEV;
61 
62 	if (id == 0) {
63 		uart0_resources[0].start = bcm63xx_regset_address(RSET_UART0);
64 		uart0_resources[0].end = uart0_resources[0].start +
65 			RSET_UART_SIZE - 1;
66 		uart0_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0);
67 	}
68 
69 	if (id == 1) {
70 		uart1_resources[0].start = bcm63xx_regset_address(RSET_UART1);
71 		uart1_resources[0].end = uart1_resources[0].start +
72 			RSET_UART_SIZE - 1;
73 		uart1_resources[1].start = bcm63xx_get_irq_number(IRQ_UART1);
74 	}
75 
76 	return platform_device_register(&bcm63xx_uart_devices[id]);
77 }
78