Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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}