linux/arch/mips/ath79/dev-common.c
Gabor Juhos 858f763c1c MIPS: ath79: add common watchdog device
All supported SoCs have a built-in hardware watchdog driver. This patch
registers a platform_device for that to make it usable.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1955/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-01-18 19:30:26 +01:00

78 lines
1.8 KiB
C

/*
* Atheros AR71XX/AR724X/AR913X common devices
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-common.h"
static struct resource ath79_uart_resources[] = {
{
.start = AR71XX_UART_BASE,
.end = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
static struct plat_serial8250_port ath79_uart_data[] = {
{
.mapbase = AR71XX_UART_BASE,
.irq = ATH79_MISC_IRQ_UART,
.flags = AR71XX_UART_FLAGS,
.iotype = UPIO_MEM32,
.regshift = 2,
}, {
/* terminating entry */
}
};
static struct platform_device ath79_uart_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.resource = ath79_uart_resources,
.num_resources = ARRAY_SIZE(ath79_uart_resources),
.dev = {
.platform_data = ath79_uart_data
},
};
void __init ath79_register_uart(void)
{
struct clk *clk;
clk = clk_get(NULL, "uart");
if (IS_ERR(clk))
panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
ath79_uart_data[0].uartclk = clk_get_rate(clk);
platform_device_register(&ath79_uart_device);
}
static struct platform_device ath79_wdt_device = {
.name = "ath79-wdt",
.id = -1,
};
void __init ath79_register_wdt(void)
{
platform_device_register(&ath79_wdt_device);
}