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(3),
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
57static struct resource ar933x_uart_resources[] = {
58	{
59		.start	= AR933X_UART_BASE,
60		.end	= AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
61		.flags	= IORESOURCE_MEM,
62	},
63	{
64		.start	= ATH79_MISC_IRQ(3),
65		.end	= ATH79_MISC_IRQ(3),
66		.flags	= IORESOURCE_IRQ,
67	},
68};
69
70static struct platform_device ar933x_uart_device = {
71	.name		= "ar933x-uart",
72	.id		= -1,
73	.resource	= ar933x_uart_resources,
74	.num_resources	= ARRAY_SIZE(ar933x_uart_resources),
75};
76
77void __init ath79_register_uart(void)
78{
79	unsigned long uart_clk_rate;
80
81	uart_clk_rate = ath79_get_sys_clk_rate("uart");
82
83	if (soc_is_ar71xx() ||
84	    soc_is_ar724x() ||
85	    soc_is_ar913x() ||
86	    soc_is_ar934x() ||
87	    soc_is_qca955x()) {
88		ath79_uart_data[0].uartclk = uart_clk_rate;
89		platform_device_register(&ath79_uart_device);
90	} else if (soc_is_ar933x()) {
91		platform_device_register(&ar933x_uart_device);
92	} else {
93		BUG();
94	}
95}
96
97void __init ath79_register_wdt(void)
98{
99	struct resource res;
100
101	memset(&res, 0, sizeof(res));
102
103	res.flags = IORESOURCE_MEM;
104	res.start = AR71XX_RESET_BASE + AR71XX_RESET_REG_WDOG_CTRL;
105	res.end = res.start + 0x8 - 1;
106
107	platform_device_register_simple("ath79-wdt", -1, &res, 1);
108}
109