mirror of https://gitee.com/openkylin/linux.git
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
/*
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* Atheros AR71XX/AR724X/AR913X common devices
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*
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* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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*
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* Parts of this file are based on Atheros' 2.6.15 BSP
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <asm/mach-ath79/ath79.h>
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#include <asm/mach-ath79/ar71xx_regs.h>
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#include <asm/mach-ath79/ar933x_uart_platform.h>
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#include "common.h"
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#include "dev-common.h"
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static struct resource ath79_uart_resources[] = {
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{
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.start = AR71XX_UART_BASE,
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.end = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
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static struct plat_serial8250_port ath79_uart_data[] = {
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{
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.mapbase = AR71XX_UART_BASE,
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.irq = ATH79_MISC_IRQ_UART,
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.flags = AR71XX_UART_FLAGS,
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.iotype = UPIO_MEM32,
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.regshift = 2,
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}, {
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/* terminating entry */
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}
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};
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static struct platform_device ath79_uart_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.resource = ath79_uart_resources,
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.num_resources = ARRAY_SIZE(ath79_uart_resources),
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.dev = {
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.platform_data = ath79_uart_data
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},
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};
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static struct resource ar933x_uart_resources[] = {
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{
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.start = AR933X_UART_BASE,
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.end = AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = ATH79_MISC_IRQ_UART,
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.end = ATH79_MISC_IRQ_UART,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct ar933x_uart_platform_data ar933x_uart_data;
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static struct platform_device ar933x_uart_device = {
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.name = "ar933x-uart",
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.id = -1,
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.resource = ar933x_uart_resources,
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.num_resources = ARRAY_SIZE(ar933x_uart_resources),
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.dev = {
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.platform_data = &ar933x_uart_data,
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},
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};
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void __init ath79_register_uart(void)
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{
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struct clk *clk;
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clk = clk_get(NULL, "uart");
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if (IS_ERR(clk))
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panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
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if (soc_is_ar71xx() ||
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soc_is_ar724x() ||
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soc_is_ar913x() ||
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soc_is_ar934x()) {
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ath79_uart_data[0].uartclk = clk_get_rate(clk);
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platform_device_register(&ath79_uart_device);
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} else if (soc_is_ar933x()) {
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ar933x_uart_data.uartclk = clk_get_rate(clk);
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platform_device_register(&ar933x_uart_device);
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} else {
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BUG();
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}
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}
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static struct platform_device ath79_wdt_device = {
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.name = "ath79-wdt",
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.id = -1,
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};
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void __init ath79_register_wdt(void)
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{
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platform_device_register(&ath79_wdt_device);
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}
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