1/*
 2 *  Atheros AR71XX/AR724X/AR913X common devices
 3 *
 4 *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
 5 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 6 *
 7 *  Parts of this file are based on Atheros' 2.6.15 BSP
 8 *
 9 *  This program is free software; you can redistribute it and/or modify it
10 *  under the terms of the GNU General Public License version 2 as published
11 *  by the Free Software Foundation.
12 */
13
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/platform_device.h>
17#include <linux/serial_8250.h>
18#include <linux/clk.h>
19#include <linux/err.h>
20
21#include <asm/mach-ath79/ath79.h>
22#include <asm/mach-ath79/ar71xx_regs.h>
23#include "common.h"
24#include "dev-common.h"
25
26static struct resource ath79_uart_resources[] = {
27	{
28		.start	= AR71XX_UART_BASE,
29		.end	= AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
30		.flags	= IORESOURCE_MEM,
31	},
32};
33
34#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
35static struct plat_serial8250_port ath79_uart_data[] = {
36	{
37		.mapbase	= AR71XX_UART_BASE,
38		.irq		= ATH79_MISC_IRQ_UART,
39		.flags		= AR71XX_UART_FLAGS,
40		.iotype		= UPIO_MEM32,
41		.regshift	= 2,
42	}, {
43		/* terminating entry */
44	}
45};
46
47static struct platform_device ath79_uart_device = {
48	.name		= "serial8250",
49	.id		= PLAT8250_DEV_PLATFORM,
50	.resource	= ath79_uart_resources,
51	.num_resources	= ARRAY_SIZE(ath79_uart_resources),
52	.dev = {
53		.platform_data	= ath79_uart_data
54	},
55};
56
57void __init ath79_register_uart(void)
58{
59	struct clk *clk;
60
61	clk = clk_get(NULL, "uart");
62	if (IS_ERR(clk))
63		panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
64
65	ath79_uart_data[0].uartclk = clk_get_rate(clk);
66	platform_device_register(&ath79_uart_device);
67}
68
69static struct platform_device ath79_wdt_device = {
70	.name		= "ath79-wdt",
71	.id		= -1,
72};
73
74void __init ath79_register_wdt(void)
75{
76	platform_device_register(&ath79_wdt_device);
77}