109 lines
2.5 KiB
C
109 lines
2.5 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(3),
|
|
.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
|
|
},
|
|
};
|
|
|
|
static struct resource ar933x_uart_resources[] = {
|
|
{
|
|
.start = AR933X_UART_BASE,
|
|
.end = AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = ATH79_MISC_IRQ(3),
|
|
.end = ATH79_MISC_IRQ(3),
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device ar933x_uart_device = {
|
|
.name = "ar933x-uart",
|
|
.id = -1,
|
|
.resource = ar933x_uart_resources,
|
|
.num_resources = ARRAY_SIZE(ar933x_uart_resources),
|
|
};
|
|
|
|
void __init ath79_register_uart(void)
|
|
{
|
|
unsigned long uart_clk_rate;
|
|
|
|
uart_clk_rate = ath79_get_sys_clk_rate("uart");
|
|
|
|
if (soc_is_ar71xx() ||
|
|
soc_is_ar724x() ||
|
|
soc_is_ar913x() ||
|
|
soc_is_ar934x() ||
|
|
soc_is_qca955x()) {
|
|
ath79_uart_data[0].uartclk = uart_clk_rate;
|
|
platform_device_register(&ath79_uart_device);
|
|
} else if (soc_is_ar933x()) {
|
|
platform_device_register(&ar933x_uart_device);
|
|
} else {
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
void __init ath79_register_wdt(void)
|
|
{
|
|
struct resource res;
|
|
|
|
memset(&res, 0, sizeof(res));
|
|
|
|
res.flags = IORESOURCE_MEM;
|
|
res.start = AR71XX_RESET_BASE + AR71XX_RESET_REG_WDOG_CTRL;
|
|
res.end = res.start + 0x8 - 1;
|
|
|
|
platform_device_register_simple("ath79-wdt", -1, &res, 1);
|
|
}
|