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From d9215f4c69b414f589eeeff002af7ef58b96b172 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 20 Jun 2011 19:26:12 +0200
Subject: [PATCH 15/27] MIPS: ath79: register UART device for the AR933X SoCs
The AR933X SoCs does not have a 8250 compatible UART, they
are using a different UART core. Register a different platform
device for the different UART.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Kathy Giori <kgiori@qca.qualcomm.com>
Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com>
Patchwork: https://patchwork.linux-mips.org/patch/2528/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/ath79/dev-common.c | 38 ++++++++++++++++++++++++++++++++++++--
1 files changed, 36 insertions(+), 2 deletions(-)
--- a/arch/mips/ath79/dev-common.c
+++ b/arch/mips/ath79/dev-common.c
@@ -20,6 +20,7 @@
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
+#include <asm/mach-ath79/ar933x_uart_platform.h>
#include "common.h"
#include "dev-common.h"
@@ -54,6 +55,30 @@ static struct platform_device ath79_uart
},
};
+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_UART,
+ .end = ATH79_MISC_IRQ_UART,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct ar933x_uart_platform_data ar933x_uart_data;
+static struct platform_device ar933x_uart_device = {
+ .name = "ar933x-uart",
+ .id = -1,
+ .resource = ar933x_uart_resources,
+ .num_resources = ARRAY_SIZE(ar933x_uart_resources),
+ .dev = {
+ .platform_data = &ar933x_uart_data,
+ },
+};
+
void __init ath79_register_uart(void)
{
struct clk *clk;
@@ -62,8 +87,17 @@ void __init ath79_register_uart(void)
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);
+ if (soc_is_ar71xx() ||
+ soc_is_ar724x() ||
+ soc_is_ar913x()) {
+ ath79_uart_data[0].uartclk = clk_get_rate(clk);
+ platform_device_register(&ath79_uart_device);
+ } else if (soc_is_ar933x()) {
+ ar933x_uart_data.uartclk = clk_get_rate(clk);
+ platform_device_register(&ar933x_uart_device);
+ } else {
+ BUG();
+ }
}
static struct platform_device ath79_wdt_device = {
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